diff --git a/configs/surface-6.4.config b/configs/surface-6.4.config deleted file mode 100644 index 6fe3f7951..000000000 --- a/configs/surface-6.4.config +++ /dev/null @@ -1,72 +0,0 @@ -## -## Surface Aggregator Module -## -CONFIG_SURFACE_AGGREGATOR=m -# CONFIG_SURFACE_AGGREGATOR_ERROR_INJECTION is not set -CONFIG_SURFACE_AGGREGATOR_BUS=y -CONFIG_SURFACE_AGGREGATOR_CDEV=m -CONFIG_SURFACE_AGGREGATOR_HUB=m -CONFIG_SURFACE_AGGREGATOR_REGISTRY=m -CONFIG_SURFACE_AGGREGATOR_TABLET_SWITCH=m - -CONFIG_SURFACE_ACPI_NOTIFY=m -CONFIG_SURFACE_DTX=m -CONFIG_SURFACE_PLATFORM_PROFILE=m - -CONFIG_SURFACE_HID=m -CONFIG_SURFACE_KBD=m - -CONFIG_BATTERY_SURFACE=m -CONFIG_CHARGER_SURFACE=m - -## -## Surface Hotplug -## -CONFIG_SURFACE_HOTPLUG=m - -## -## IPTS and ITHC touchscreen -## -## This only enables the user interface for IPTS/ITHC data. -## For the touchscreen to work, you need to install iptsd. -## -CONFIG_HID_IPTS=m -CONFIG_HID_ITHC=m - -## -## Cameras: IPU3 -## -CONFIG_VIDEO_DW9719=m -CONFIG_VIDEO_IPU3_IMGU=m -CONFIG_VIDEO_IPU3_CIO2=m -CONFIG_CIO2_BRIDGE=y -CONFIG_INTEL_SKL_INT3472=m -CONFIG_REGULATOR_TPS68470=m -CONFIG_COMMON_CLK_TPS68470=m -CONFIG_LEDS_TPS68470=m - -## -## Cameras: Sensor drivers -## -CONFIG_VIDEO_OV5693=m -CONFIG_VIDEO_OV7251=m -CONFIG_VIDEO_OV8865=m - -## -## Surface 3: atomisp causes problems (see issue #1095). Disable it for now. -## -# CONFIG_INTEL_ATOMISP is not set - -## -## ALS Sensor for Surface Book 3, Surface Laptop 3, Surface Pro 7 -## -CONFIG_APDS9960=m - -## -## Other Drivers -## -CONFIG_INPUT_SOC_BUTTON_ARRAY=m -CONFIG_SURFACE_3_POWER_OPREGION=m -CONFIG_SURFACE_PRO3_BUTTON=m -CONFIG_SURFACE_GPE=m -CONFIG_SURFACE_BOOK1_DGPU_SWITCH=m diff --git a/patches/6.4/0001-surface3-oemb.patch b/patches/6.4/0001-surface3-oemb.patch deleted file mode 100644 index c8f749665..000000000 --- a/patches/6.4/0001-surface3-oemb.patch +++ /dev/null @@ -1,101 +0,0 @@ -From 16a8c7c230862cefa13cbf3d3c63c53e403b0f8d Mon Sep 17 00:00:00 2001 -From: Tsuchiya Yuto -Date: Sun, 18 Oct 2020 16:42:44 +0900 -Subject: [PATCH] (surface3-oemb) add DMI matches for Surface 3 with broken DMI - table - -On some Surface 3, the DMI table gets corrupted for unknown reasons -and breaks existing DMI matching used for device-specific quirks. - -This commit adds the (broken) DMI data into dmi_system_id tables used -for quirks so that each driver can enable quirks even on the affected -systems. - -On affected systems, DMI data will look like this: - $ grep . /sys/devices/virtual/dmi/id/{bios_vendor,board_name,board_vendor,\ - chassis_vendor,product_name,sys_vendor} - /sys/devices/virtual/dmi/id/bios_vendor:American Megatrends Inc. - /sys/devices/virtual/dmi/id/board_name:OEMB - /sys/devices/virtual/dmi/id/board_vendor:OEMB - /sys/devices/virtual/dmi/id/chassis_vendor:OEMB - /sys/devices/virtual/dmi/id/product_name:OEMB - /sys/devices/virtual/dmi/id/sys_vendor:OEMB - -Expected: - $ grep . /sys/devices/virtual/dmi/id/{bios_vendor,board_name,board_vendor,\ - chassis_vendor,product_name,sys_vendor} - /sys/devices/virtual/dmi/id/bios_vendor:American Megatrends Inc. - /sys/devices/virtual/dmi/id/board_name:Surface 3 - /sys/devices/virtual/dmi/id/board_vendor:Microsoft Corporation - /sys/devices/virtual/dmi/id/chassis_vendor:Microsoft Corporation - /sys/devices/virtual/dmi/id/product_name:Surface 3 - /sys/devices/virtual/dmi/id/sys_vendor:Microsoft Corporation - -Signed-off-by: Tsuchiya Yuto -Patchset: surface3-oemb ---- - drivers/platform/surface/surface3-wmi.c | 7 +++++++ - sound/soc/codecs/rt5645.c | 9 +++++++++ - sound/soc/intel/common/soc-acpi-intel-cht-match.c | 8 ++++++++ - 3 files changed, 24 insertions(+) - -diff --git a/drivers/platform/surface/surface3-wmi.c b/drivers/platform/surface/surface3-wmi.c -index ca4602bcc7de..490b9731068a 100644 ---- a/drivers/platform/surface/surface3-wmi.c -+++ b/drivers/platform/surface/surface3-wmi.c -@@ -37,6 +37,13 @@ static const struct dmi_system_id surface3_dmi_table[] = { - DMI_MATCH(DMI_PRODUCT_NAME, "Surface 3"), - }, - }, -+ { -+ .matches = { -+ DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."), -+ DMI_MATCH(DMI_SYS_VENDOR, "OEMB"), -+ DMI_MATCH(DMI_PRODUCT_NAME, "OEMB"), -+ }, -+ }, - #endif - { } - }; -diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c -index 7c7cbb6362ea..81a8ff40e86e 100644 ---- a/sound/soc/codecs/rt5645.c -+++ b/sound/soc/codecs/rt5645.c -@@ -3717,6 +3717,15 @@ static const struct dmi_system_id dmi_platform_data[] = { - }, - .driver_data = (void *)&intel_braswell_platform_data, - }, -+ { -+ .ident = "Microsoft Surface 3", -+ .matches = { -+ DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."), -+ DMI_MATCH(DMI_SYS_VENDOR, "OEMB"), -+ DMI_MATCH(DMI_PRODUCT_NAME, "OEMB"), -+ }, -+ .driver_data = (void *)&intel_braswell_platform_data, -+ }, - { - /* - * Match for the GPDwin which unfortunately uses somewhat -diff --git a/sound/soc/intel/common/soc-acpi-intel-cht-match.c b/sound/soc/intel/common/soc-acpi-intel-cht-match.c -index cdcbf04b8832..958305779b12 100644 ---- a/sound/soc/intel/common/soc-acpi-intel-cht-match.c -+++ b/sound/soc/intel/common/soc-acpi-intel-cht-match.c -@@ -27,6 +27,14 @@ static const struct dmi_system_id cht_table[] = { - DMI_MATCH(DMI_PRODUCT_NAME, "Surface 3"), - }, - }, -+ { -+ .callback = cht_surface_quirk_cb, -+ .matches = { -+ DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."), -+ DMI_MATCH(DMI_SYS_VENDOR, "OEMB"), -+ DMI_MATCH(DMI_PRODUCT_NAME, "OEMB"), -+ }, -+ }, - { } - }; - --- -2.42.0 - diff --git a/patches/6.4/0002-mwifiex.patch b/patches/6.4/0002-mwifiex.patch deleted file mode 100644 index 36f69b7ae..000000000 --- a/patches/6.4/0002-mwifiex.patch +++ /dev/null @@ -1,400 +0,0 @@ -From dc2e72cce140ad1dee9cbc6fdaa52226b8bb1a00 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= -Date: Tue, 3 Nov 2020 13:28:04 +0100 -Subject: [PATCH] mwifiex: Add quirk resetting the PCI bridge on MS Surface - devices - -The most recent firmware of the 88W8897 card reports a hardcoded LTR -value to the system during initialization, probably as an (unsuccessful) -attempt of the developers to fix firmware crashes. This LTR value -prevents most of the Microsoft Surface devices from entering deep -powersaving states (either platform C-State 10 or S0ix state), because -the exit latency of that state would be higher than what the card can -tolerate. - -Turns out the card works just the same (including the firmware crashes) -no matter if that hardcoded LTR value is reported or not, so it's kind -of useless and only prevents us from saving power. - -To get rid of those hardcoded LTR reports, it's possible to reset the -PCI bridge device after initializing the cards firmware. I'm not exactly -sure why that works, maybe the power management subsystem of the PCH -resets its stored LTR values when doing a function level reset of the -bridge device. Doing the reset once after starting the wifi firmware -works very well, probably because the firmware only reports that LTR -value a single time during firmware startup. - -Patchset: mwifiex ---- - drivers/net/wireless/marvell/mwifiex/pcie.c | 12 +++++++++ - .../wireless/marvell/mwifiex/pcie_quirks.c | 26 +++++++++++++------ - .../wireless/marvell/mwifiex/pcie_quirks.h | 1 + - 3 files changed, 31 insertions(+), 8 deletions(-) - -diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c -index 6697132ecc97..f06b4ebc5bd8 100644 ---- a/drivers/net/wireless/marvell/mwifiex/pcie.c -+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c -@@ -1771,9 +1771,21 @@ mwifiex_pcie_send_boot_cmd(struct mwifiex_adapter *adapter, struct sk_buff *skb) - static int mwifiex_pcie_init_fw_port(struct mwifiex_adapter *adapter) - { - struct pcie_service_card *card = adapter->card; -+ struct pci_dev *pdev = card->dev; -+ struct pci_dev *parent_pdev = pci_upstream_bridge(pdev); - const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; - int tx_wrap = card->txbd_wrptr & reg->tx_wrap_mask; - -+ /* Trigger a function level reset of the PCI bridge device, this makes -+ * the firmware of PCIe 88W8897 cards stop reporting a fixed LTR value -+ * that prevents the system from entering package C10 and S0ix powersaving -+ * states. -+ * We need to do it here because it must happen after firmware -+ * initialization and this function is called after that is done. -+ */ -+ if (card->quirks & QUIRK_DO_FLR_ON_BRIDGE) -+ pci_reset_function(parent_pdev); -+ - /* Write the RX ring read pointer in to reg->rx_rdptr */ - if (mwifiex_write_reg(adapter, reg->rx_rdptr, card->rxbd_rdptr | - tx_wrap)) { -diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c -index dd6d21f1dbfd..f46b06f8d643 100644 ---- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c -+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c -@@ -13,7 +13,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"), - }, -- .driver_data = (void *)QUIRK_FW_RST_D3COLD, -+ .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -+ QUIRK_DO_FLR_ON_BRIDGE), - }, - { - .ident = "Surface Pro 5", -@@ -22,7 +23,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), - DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"), - }, -- .driver_data = (void *)QUIRK_FW_RST_D3COLD, -+ .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -+ QUIRK_DO_FLR_ON_BRIDGE), - }, - { - .ident = "Surface Pro 5 (LTE)", -@@ -31,7 +33,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), - DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"), - }, -- .driver_data = (void *)QUIRK_FW_RST_D3COLD, -+ .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -+ QUIRK_DO_FLR_ON_BRIDGE), - }, - { - .ident = "Surface Pro 6", -@@ -39,7 +42,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"), - }, -- .driver_data = (void *)QUIRK_FW_RST_D3COLD, -+ .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -+ QUIRK_DO_FLR_ON_BRIDGE), - }, - { - .ident = "Surface Book 1", -@@ -47,7 +51,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"), - }, -- .driver_data = (void *)QUIRK_FW_RST_D3COLD, -+ .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -+ QUIRK_DO_FLR_ON_BRIDGE), - }, - { - .ident = "Surface Book 2", -@@ -55,7 +60,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"), - }, -- .driver_data = (void *)QUIRK_FW_RST_D3COLD, -+ .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -+ QUIRK_DO_FLR_ON_BRIDGE), - }, - { - .ident = "Surface Laptop 1", -@@ -63,7 +69,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"), - }, -- .driver_data = (void *)QUIRK_FW_RST_D3COLD, -+ .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -+ QUIRK_DO_FLR_ON_BRIDGE), - }, - { - .ident = "Surface Laptop 2", -@@ -71,7 +78,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"), - }, -- .driver_data = (void *)QUIRK_FW_RST_D3COLD, -+ .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -+ QUIRK_DO_FLR_ON_BRIDGE), - }, - {} - }; -@@ -89,6 +97,8 @@ void mwifiex_initialize_quirks(struct pcie_service_card *card) - dev_info(&pdev->dev, "no quirks enabled\n"); - if (card->quirks & QUIRK_FW_RST_D3COLD) - dev_info(&pdev->dev, "quirk reset_d3cold enabled\n"); -+ if (card->quirks & QUIRK_DO_FLR_ON_BRIDGE) -+ dev_info(&pdev->dev, "quirk do_flr_on_bridge enabled\n"); - } - - static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev) -diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h -index d6ff964aec5b..5d30ae39d65e 100644 ---- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h -+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h -@@ -4,6 +4,7 @@ - #include "pcie.h" - - #define QUIRK_FW_RST_D3COLD BIT(0) -+#define QUIRK_DO_FLR_ON_BRIDGE BIT(1) - - void mwifiex_initialize_quirks(struct pcie_service_card *card); - int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev); --- -2.42.0 - -From 897c0853d05db16395c72b8fba7f429d78436b3d Mon Sep 17 00:00:00 2001 -From: Tsuchiya Yuto -Date: Sun, 4 Oct 2020 00:11:49 +0900 -Subject: [PATCH] mwifiex: pcie: disable bridge_d3 for Surface gen4+ - -Currently, mwifiex fw will crash after suspend on recent kernel series. -On Windows, it seems that the root port of wifi will never enter D3 state -(stay on D0 state). And on Linux, disabling the D3 state for the -bridge fixes fw crashing after suspend. - -This commit disables the D3 state of root port on driver initialization -and fixes fw crashing after suspend. - -Signed-off-by: Tsuchiya Yuto -Patchset: mwifiex ---- - drivers/net/wireless/marvell/mwifiex/pcie.c | 7 +++++ - .../wireless/marvell/mwifiex/pcie_quirks.c | 27 +++++++++++++------ - .../wireless/marvell/mwifiex/pcie_quirks.h | 1 + - 3 files changed, 27 insertions(+), 8 deletions(-) - -diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c -index f06b4ebc5bd8..07f13b52ddb9 100644 ---- a/drivers/net/wireless/marvell/mwifiex/pcie.c -+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c -@@ -370,6 +370,7 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) - { - struct pcie_service_card *card; -+ struct pci_dev *parent_pdev = pci_upstream_bridge(pdev); - int ret; - - pr_debug("info: vendor=0x%4.04X device=0x%4.04X rev=%d\n", -@@ -411,6 +412,12 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev, - return -1; - } - -+ /* disable bridge_d3 for Surface gen4+ devices to fix fw crashing -+ * after suspend -+ */ -+ if (card->quirks & QUIRK_NO_BRIDGE_D3) -+ parent_pdev->bridge_d3 = false; -+ - return 0; - } - -diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c -index f46b06f8d643..99b024ecbade 100644 ---- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c -+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c -@@ -14,7 +14,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"), - }, - .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -- QUIRK_DO_FLR_ON_BRIDGE), -+ QUIRK_DO_FLR_ON_BRIDGE | -+ QUIRK_NO_BRIDGE_D3), - }, - { - .ident = "Surface Pro 5", -@@ -24,7 +25,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"), - }, - .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -- QUIRK_DO_FLR_ON_BRIDGE), -+ QUIRK_DO_FLR_ON_BRIDGE | -+ QUIRK_NO_BRIDGE_D3), - }, - { - .ident = "Surface Pro 5 (LTE)", -@@ -34,7 +36,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"), - }, - .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -- QUIRK_DO_FLR_ON_BRIDGE), -+ QUIRK_DO_FLR_ON_BRIDGE | -+ QUIRK_NO_BRIDGE_D3), - }, - { - .ident = "Surface Pro 6", -@@ -43,7 +46,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"), - }, - .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -- QUIRK_DO_FLR_ON_BRIDGE), -+ QUIRK_DO_FLR_ON_BRIDGE | -+ QUIRK_NO_BRIDGE_D3), - }, - { - .ident = "Surface Book 1", -@@ -52,7 +56,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"), - }, - .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -- QUIRK_DO_FLR_ON_BRIDGE), -+ QUIRK_DO_FLR_ON_BRIDGE | -+ QUIRK_NO_BRIDGE_D3), - }, - { - .ident = "Surface Book 2", -@@ -61,7 +66,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"), - }, - .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -- QUIRK_DO_FLR_ON_BRIDGE), -+ QUIRK_DO_FLR_ON_BRIDGE | -+ QUIRK_NO_BRIDGE_D3), - }, - { - .ident = "Surface Laptop 1", -@@ -70,7 +76,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"), - }, - .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -- QUIRK_DO_FLR_ON_BRIDGE), -+ QUIRK_DO_FLR_ON_BRIDGE | -+ QUIRK_NO_BRIDGE_D3), - }, - { - .ident = "Surface Laptop 2", -@@ -79,7 +86,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"), - }, - .driver_data = (void *)(QUIRK_FW_RST_D3COLD | -- QUIRK_DO_FLR_ON_BRIDGE), -+ QUIRK_DO_FLR_ON_BRIDGE | -+ QUIRK_NO_BRIDGE_D3), - }, - {} - }; -@@ -99,6 +107,9 @@ void mwifiex_initialize_quirks(struct pcie_service_card *card) - dev_info(&pdev->dev, "quirk reset_d3cold enabled\n"); - if (card->quirks & QUIRK_DO_FLR_ON_BRIDGE) - dev_info(&pdev->dev, "quirk do_flr_on_bridge enabled\n"); -+ if (card->quirks & QUIRK_NO_BRIDGE_D3) -+ dev_info(&pdev->dev, -+ "quirk no_brigde_d3 enabled\n"); - } - - static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev) -diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h -index 5d30ae39d65e..c14eb56eb911 100644 ---- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h -+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h -@@ -5,6 +5,7 @@ - - #define QUIRK_FW_RST_D3COLD BIT(0) - #define QUIRK_DO_FLR_ON_BRIDGE BIT(1) -+#define QUIRK_NO_BRIDGE_D3 BIT(2) - - void mwifiex_initialize_quirks(struct pcie_service_card *card); - int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev); --- -2.42.0 - -From bbeaaa59c819fedf71d8a90302105652ec37da5b Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= -Date: Thu, 25 Mar 2021 11:33:02 +0100 -Subject: [PATCH] Bluetooth: btusb: Lower passive lescan interval on Marvell - 88W8897 - -The Marvell 88W8897 combined wifi and bluetooth card (pcie+usb version) -is used in a lot of Microsoft Surface devices, and all those devices -suffer from very low 2.4GHz wifi connection speeds while bluetooth is -enabled. The reason for that is that the default passive scanning -interval for Bluetooth Low Energy devices is quite high in Linux -(interval of 60 msec and scan window of 30 msec, see hci_core.c), and -the Marvell chip is known for its bad bt+wifi coexisting performance. - -So decrease that passive scan interval and make the scan window shorter -on this particular device to allow for spending more time transmitting -wifi signals: The new scan interval is 250 msec (0x190 * 0.625 msec) and -the new scan window is 6.25 msec (0xa * 0,625 msec). - -This change has a very large impact on the 2.4GHz wifi speeds and gets -it up to performance comparable with the Windows driver, which seems to -apply a similar quirk. - -The interval and window length were tested and found to work very well -with a lot of Bluetooth Low Energy devices, including the Surface Pen, a -Bluetooth Speaker and two modern Bluetooth headphones. All devices were -discovered immediately after turning them on. Even lower values were -also tested, but they introduced longer delays until devices get -discovered. - -Patchset: mwifiex ---- - drivers/bluetooth/btusb.c | 15 +++++++++++++++ - 1 file changed, 15 insertions(+) - -diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c -index 5559d6d8ae8b..5baec547dfee 100644 ---- a/drivers/bluetooth/btusb.c -+++ b/drivers/bluetooth/btusb.c -@@ -65,6 +65,7 @@ static struct usb_driver btusb_driver; - #define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25) - #define BTUSB_INTEL_NO_WBS_SUPPORT BIT(26) - #define BTUSB_ACTIONS_SEMI BIT(27) -+#define BTUSB_LOWER_LESCAN_INTERVAL BIT(28) - - static const struct usb_device_id btusb_table[] = { - /* Generic Bluetooth USB device */ -@@ -468,6 +469,7 @@ static const struct usb_device_id blacklist_table[] = { - { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, - { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, - { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, -+ { USB_DEVICE(0x1286, 0x204c), .driver_info = BTUSB_LOWER_LESCAN_INTERVAL }, - - /* Intel Bluetooth devices */ - { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED }, -@@ -4300,6 +4302,19 @@ static int btusb_probe(struct usb_interface *intf, - if (id->driver_info & BTUSB_MARVELL) - hdev->set_bdaddr = btusb_set_bdaddr_marvell; - -+ /* The Marvell 88W8897 combined wifi and bluetooth card is known for -+ * very bad bt+wifi coexisting performance. -+ * -+ * Decrease the passive BT Low Energy scan interval a bit -+ * (0x0190 * 0.625 msec = 250 msec) and make the scan window shorter -+ * (0x000a * 0,625 msec = 6.25 msec). This allows for significantly -+ * higher wifi throughput while passively scanning for BT LE devices. -+ */ -+ if (id->driver_info & BTUSB_LOWER_LESCAN_INTERVAL) { -+ hdev->le_scan_interval = 0x0190; -+ hdev->le_scan_window = 0x000a; -+ } -+ - if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && - (id->driver_info & BTUSB_MEDIATEK)) { - hdev->setup = btusb_mtk_setup; --- -2.42.0 - diff --git a/patches/6.4/0003-ath10k.patch b/patches/6.4/0003-ath10k.patch deleted file mode 100644 index af042b9c0..000000000 --- a/patches/6.4/0003-ath10k.patch +++ /dev/null @@ -1,121 +0,0 @@ -From f9b647f7acd5a85651c864917d1be439cbfb8b84 Mon Sep 17 00:00:00 2001 -From: Maximilian Luz -Date: Sat, 27 Feb 2021 00:45:52 +0100 -Subject: [PATCH] ath10k: Add module parameters to override board files - -Some Surface devices, specifically the Surface Go and AMD version of the -Surface Laptop 3 (wich both come with QCA6174 WiFi chips), work better -with a different board file, as it seems that the firmeware included -upstream is buggy. - -As it is generally not a good idea to randomly overwrite files, let -alone doing so via packages, we add module parameters to override those -file names in the driver. This allows us to package/deploy the override -via a modprobe.d config. - -Signed-off-by: Maximilian Luz -Patchset: ath10k ---- - drivers/net/wireless/ath/ath10k/core.c | 58 ++++++++++++++++++++++++++ - 1 file changed, 58 insertions(+) - -diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c -index 6cdb225b7eac..19c036751fb1 100644 ---- a/drivers/net/wireless/ath/ath10k/core.c -+++ b/drivers/net/wireless/ath/ath10k/core.c -@@ -38,6 +38,9 @@ static bool fw_diag_log; - /* frame mode values are mapped as per enum ath10k_hw_txrx_mode */ - unsigned int ath10k_frame_mode = ATH10K_HW_TXRX_NATIVE_WIFI; - -+static char *override_board = ""; -+static char *override_board2 = ""; -+ - unsigned long ath10k_coredump_mask = BIT(ATH10K_FW_CRASH_DUMP_REGISTERS) | - BIT(ATH10K_FW_CRASH_DUMP_CE_DATA); - -@@ -50,6 +53,9 @@ module_param(fw_diag_log, bool, 0644); - module_param_named(frame_mode, ath10k_frame_mode, uint, 0644); - module_param_named(coredump_mask, ath10k_coredump_mask, ulong, 0444); - -+module_param(override_board, charp, 0644); -+module_param(override_board2, charp, 0644); -+ - MODULE_PARM_DESC(debug_mask, "Debugging mask"); - MODULE_PARM_DESC(uart_print, "Uart target debugging"); - MODULE_PARM_DESC(skip_otp, "Skip otp failure for calibration in testmode"); -@@ -59,6 +65,9 @@ MODULE_PARM_DESC(frame_mode, - MODULE_PARM_DESC(coredump_mask, "Bitfield of what to include in firmware crash file"); - MODULE_PARM_DESC(fw_diag_log, "Diag based fw log debugging"); - -+MODULE_PARM_DESC(override_board, "Override for board.bin file"); -+MODULE_PARM_DESC(override_board2, "Override for board-2.bin file"); -+ - static const struct ath10k_hw_params ath10k_hw_params_list[] = { - { - .id = QCA988X_HW_2_0_VERSION, -@@ -911,6 +920,42 @@ static int ath10k_init_configure_target(struct ath10k *ar) - return 0; - } - -+static const char *ath10k_override_board_fw_file(struct ath10k *ar, -+ const char *file) -+{ -+ if (strcmp(file, "board.bin") == 0) { -+ if (strcmp(override_board, "") == 0) -+ return file; -+ -+ if (strcmp(override_board, "none") == 0) { -+ dev_info(ar->dev, "firmware override: pretending 'board.bin' does not exist\n"); -+ return NULL; -+ } -+ -+ dev_info(ar->dev, "firmware override: replacing 'board.bin' with '%s'\n", -+ override_board); -+ -+ return override_board; -+ } -+ -+ if (strcmp(file, "board-2.bin") == 0) { -+ if (strcmp(override_board2, "") == 0) -+ return file; -+ -+ if (strcmp(override_board2, "none") == 0) { -+ dev_info(ar->dev, "firmware override: pretending 'board-2.bin' does not exist\n"); -+ return NULL; -+ } -+ -+ dev_info(ar->dev, "firmware override: replacing 'board-2.bin' with '%s'\n", -+ override_board2); -+ -+ return override_board2; -+ } -+ -+ return file; -+} -+ - static const struct firmware *ath10k_fetch_fw_file(struct ath10k *ar, - const char *dir, - const char *file) -@@ -925,6 +970,19 @@ static const struct firmware *ath10k_fetch_fw_file(struct ath10k *ar, - if (dir == NULL) - dir = "."; - -+ /* HACK: Override board.bin and board-2.bin files if specified. -+ * -+ * Some Surface devices perform better with a different board -+ * configuration. To this end, one would need to replace the board.bin -+ * file with the modified config and remove the board-2.bin file. -+ * Unfortunately, that's not a solution that we can easily package. So -+ * we add module options to perform these overrides here. -+ */ -+ -+ file = ath10k_override_board_fw_file(ar, file); -+ if (!file) -+ return ERR_PTR(-ENOENT); -+ - snprintf(filename, sizeof(filename), "%s/%s", dir, file); - ret = firmware_request_nowarn(&fw, filename, ar->dev); - ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot fw request '%s': %d\n", --- -2.42.0 - diff --git a/patches/6.4/0004-ipts.patch b/patches/6.4/0004-ipts.patch deleted file mode 100644 index 32d786444..000000000 --- a/patches/6.4/0004-ipts.patch +++ /dev/null @@ -1,4502 +0,0 @@ -From 3c60bfb7064b153409c126bb86a0c222d01535fe Mon Sep 17 00:00:00 2001 -From: Dorian Stoll -Date: Thu, 30 Jul 2020 13:21:53 +0200 -Subject: [PATCH] misc: mei: Add missing IPTS device IDs - -Patchset: ipts ---- - drivers/misc/mei/hw-me-regs.h | 1 + - drivers/misc/mei/pci-me.c | 1 + - 2 files changed, 2 insertions(+) - -diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h -index bdc65d50b945..08723c01d727 100644 ---- a/drivers/misc/mei/hw-me-regs.h -+++ b/drivers/misc/mei/hw-me-regs.h -@@ -92,6 +92,7 @@ - #define MEI_DEV_ID_CDF 0x18D3 /* Cedar Fork */ - - #define MEI_DEV_ID_ICP_LP 0x34E0 /* Ice Lake Point LP */ -+#define MEI_DEV_ID_ICP_LP_3 0x34E4 /* Ice Lake Point LP 3 (iTouch) */ - #define MEI_DEV_ID_ICP_N 0x38E0 /* Ice Lake Point N */ - - #define MEI_DEV_ID_JSP_N 0x4DE0 /* Jasper Lake Point N */ -diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c -index 676d566f38dd..6b37dd1f8b2a 100644 ---- a/drivers/misc/mei/pci-me.c -+++ b/drivers/misc/mei/pci-me.c -@@ -97,6 +97,7 @@ static const struct pci_device_id mei_me_pci_tbl[] = { - {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_H_3, MEI_ME_PCH8_ITOUCH_CFG)}, - - {MEI_PCI_DEVICE(MEI_DEV_ID_ICP_LP, MEI_ME_PCH12_CFG)}, -+ {MEI_PCI_DEVICE(MEI_DEV_ID_ICP_LP_3, MEI_ME_PCH12_CFG)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_ICP_N, MEI_ME_PCH12_CFG)}, - - {MEI_PCI_DEVICE(MEI_DEV_ID_TGP_LP, MEI_ME_PCH15_CFG)}, --- -2.42.0 - -From 6459f5cfd31c3eaacb1bf31e58f3686a01a76894 Mon Sep 17 00:00:00 2001 -From: Liban Hannan -Date: Tue, 12 Apr 2022 23:31:12 +0100 -Subject: [PATCH] iommu: ipts: use IOMMU passthrough mode for IPTS - -Adds a quirk so that IOMMU uses passthrough mode for the IPTS device. -Otherwise, when IOMMU is enabled, IPTS produces DMAR errors like: - -DMAR: [DMA Read NO_PASID] Request device [00:16.4] fault addr -0x104ea3000 [fault reason 0x06] PTE Read access is not set - -This is very similar to the bug described at: -https://bugs.launchpad.net/bugs/1958004 - -Fixed with the following patch which this patch basically copies: -https://launchpadlibrarian.net/586396847/43255ca.diff -Patchset: ipts ---- - drivers/iommu/intel/iommu.c | 24 ++++++++++++++++++++++++ - 1 file changed, 24 insertions(+) - -diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c -index b871a6afd803..0d4542b7365d 100644 ---- a/drivers/iommu/intel/iommu.c -+++ b/drivers/iommu/intel/iommu.c -@@ -37,6 +37,8 @@ - #define IS_GFX_DEVICE(pdev) ((pdev->class >> 16) == PCI_BASE_CLASS_DISPLAY) - #define IS_USB_DEVICE(pdev) ((pdev->class >> 8) == PCI_CLASS_SERIAL_USB) - #define IS_ISA_DEVICE(pdev) ((pdev->class >> 8) == PCI_CLASS_BRIDGE_ISA) -+#define IS_IPTS(pdev) ((pdev)->vendor == PCI_VENDOR_ID_INTEL && \ -+ ((pdev)->device == 0x9d3e)) - #define IS_AZALIA(pdev) ((pdev)->vendor == 0x8086 && (pdev)->device == 0x3a3e) - - #define IOAPIC_RANGE_START (0xfee00000) -@@ -287,12 +289,14 @@ int intel_iommu_enabled = 0; - EXPORT_SYMBOL_GPL(intel_iommu_enabled); - - static int dmar_map_gfx = 1; -+static int dmar_map_ipts = 1; - static int intel_iommu_superpage = 1; - static int iommu_identity_mapping; - static int iommu_skip_te_disable; - - #define IDENTMAP_GFX 2 - #define IDENTMAP_AZALIA 4 -+#define IDENTMAP_IPTS 16 - - const struct iommu_ops intel_iommu_ops; - -@@ -2560,6 +2564,9 @@ static int device_def_domain_type(struct device *dev) - - if ((iommu_identity_mapping & IDENTMAP_GFX) && IS_GFX_DEVICE(pdev)) - return IOMMU_DOMAIN_IDENTITY; -+ -+ if ((iommu_identity_mapping & IDENTMAP_IPTS) && IS_IPTS(pdev)) -+ return IOMMU_DOMAIN_IDENTITY; - } - - return 0; -@@ -2867,6 +2874,9 @@ static int __init init_dmars(void) - if (!dmar_map_gfx) - iommu_identity_mapping |= IDENTMAP_GFX; - -+ if (!dmar_map_ipts) -+ iommu_identity_mapping |= IDENTMAP_IPTS; -+ - check_tylersburg_isoch(); - - ret = si_domain_init(hw_pass_through); -@@ -4778,6 +4788,17 @@ static void quirk_iommu_igfx(struct pci_dev *dev) - dmar_map_gfx = 0; - } - -+static void quirk_iommu_ipts(struct pci_dev *dev) -+{ -+ if (!IS_IPTS(dev)) -+ return; -+ -+ if (risky_device(dev)) -+ return; -+ -+ pci_info(dev, "Passthrough IOMMU for IPTS\n"); -+ dmar_map_ipts = 0; -+} - /* G4x/GM45 integrated gfx dmar support is totally busted. */ - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2a40, quirk_iommu_igfx); - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e00, quirk_iommu_igfx); -@@ -4813,6 +4834,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1632, quirk_iommu_igfx); - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x163A, quirk_iommu_igfx); - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x163D, quirk_iommu_igfx); - -+/* disable IPTS dmar support */ -+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9D3E, quirk_iommu_ipts); -+ - static void quirk_iommu_rwbf(struct pci_dev *dev) - { - if (risky_device(dev)) --- -2.42.0 - -From 0a2abc1902c17b9449cbc9c53ae5da72fdf62933 Mon Sep 17 00:00:00 2001 -From: Dorian Stoll -Date: Sun, 11 Dec 2022 12:00:59 +0100 -Subject: [PATCH] hid: Add support for Intel Precise Touch and Stylus - -Based on linux-surface/intel-precise-touch@8abe268 - -Signed-off-by: Dorian Stoll -Patchset: ipts ---- - drivers/hid/Kconfig | 2 + - drivers/hid/Makefile | 2 + - drivers/hid/ipts/Kconfig | 14 + - drivers/hid/ipts/Makefile | 14 + - drivers/hid/ipts/cmd.c | 62 +++++ - drivers/hid/ipts/cmd.h | 61 ++++ - drivers/hid/ipts/context.h | 51 ++++ - drivers/hid/ipts/control.c | 495 +++++++++++++++++++++++++++++++++ - drivers/hid/ipts/control.h | 127 +++++++++ - drivers/hid/ipts/desc.h | 81 ++++++ - drivers/hid/ipts/hid.c | 348 +++++++++++++++++++++++ - drivers/hid/ipts/hid.h | 22 ++ - drivers/hid/ipts/main.c | 127 +++++++++ - drivers/hid/ipts/mei.c | 189 +++++++++++++ - drivers/hid/ipts/mei.h | 67 +++++ - drivers/hid/ipts/receiver.c | 249 +++++++++++++++++ - drivers/hid/ipts/receiver.h | 17 ++ - drivers/hid/ipts/resources.c | 108 +++++++ - drivers/hid/ipts/resources.h | 39 +++ - drivers/hid/ipts/spec-data.h | 100 +++++++ - drivers/hid/ipts/spec-device.h | 285 +++++++++++++++++++ - drivers/hid/ipts/spec-hid.h | 35 +++ - drivers/hid/ipts/thread.c | 85 ++++++ - drivers/hid/ipts/thread.h | 60 ++++ - 24 files changed, 2640 insertions(+) - create mode 100644 drivers/hid/ipts/Kconfig - create mode 100644 drivers/hid/ipts/Makefile - create mode 100644 drivers/hid/ipts/cmd.c - create mode 100644 drivers/hid/ipts/cmd.h - create mode 100644 drivers/hid/ipts/context.h - create mode 100644 drivers/hid/ipts/control.c - create mode 100644 drivers/hid/ipts/control.h - create mode 100644 drivers/hid/ipts/desc.h - create mode 100644 drivers/hid/ipts/hid.c - create mode 100644 drivers/hid/ipts/hid.h - create mode 100644 drivers/hid/ipts/main.c - create mode 100644 drivers/hid/ipts/mei.c - create mode 100644 drivers/hid/ipts/mei.h - create mode 100644 drivers/hid/ipts/receiver.c - create mode 100644 drivers/hid/ipts/receiver.h - create mode 100644 drivers/hid/ipts/resources.c - create mode 100644 drivers/hid/ipts/resources.h - create mode 100644 drivers/hid/ipts/spec-data.h - create mode 100644 drivers/hid/ipts/spec-device.h - create mode 100644 drivers/hid/ipts/spec-hid.h - create mode 100644 drivers/hid/ipts/thread.c - create mode 100644 drivers/hid/ipts/thread.h - -diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig -index b977450cac75..dcedd5b90f35 100644 ---- a/drivers/hid/Kconfig -+++ b/drivers/hid/Kconfig -@@ -1316,4 +1316,6 @@ source "drivers/hid/amd-sfh-hid/Kconfig" - - source "drivers/hid/surface-hid/Kconfig" - -+source "drivers/hid/ipts/Kconfig" -+ - endif # HID_SUPPORT -diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile -index 5d37cacbde33..285e12d95b0e 100644 ---- a/drivers/hid/Makefile -+++ b/drivers/hid/Makefile -@@ -167,3 +167,5 @@ obj-$(INTEL_ISH_FIRMWARE_DOWNLOADER) += intel-ish-hid/ - obj-$(CONFIG_AMD_SFH_HID) += amd-sfh-hid/ - - obj-$(CONFIG_SURFACE_HID_CORE) += surface-hid/ -+ -+obj-$(CONFIG_HID_IPTS) += ipts/ -diff --git a/drivers/hid/ipts/Kconfig b/drivers/hid/ipts/Kconfig -new file mode 100644 -index 000000000000..297401bd388d ---- /dev/null -+++ b/drivers/hid/ipts/Kconfig -@@ -0,0 +1,14 @@ -+# SPDX-License-Identifier: GPL-2.0-or-later -+ -+config HID_IPTS -+ tristate "Intel Precise Touch & Stylus" -+ depends on INTEL_MEI -+ depends on HID -+ help -+ Say Y here if your system has a touchscreen using Intels -+ Precise Touch & Stylus (IPTS) technology. -+ -+ If unsure say N. -+ -+ To compile this driver as a module, choose M here: the -+ module will be called ipts. -diff --git a/drivers/hid/ipts/Makefile b/drivers/hid/ipts/Makefile -new file mode 100644 -index 000000000000..0fe655bccdc0 ---- /dev/null -+++ b/drivers/hid/ipts/Makefile -@@ -0,0 +1,14 @@ -+# SPDX-License-Identifier: GPL-2.0-or-later -+# -+# Makefile for the IPTS touchscreen driver -+# -+ -+obj-$(CONFIG_HID_IPTS) += ipts.o -+ipts-objs := cmd.o -+ipts-objs += control.o -+ipts-objs += hid.o -+ipts-objs += main.o -+ipts-objs += mei.o -+ipts-objs += receiver.o -+ipts-objs += resources.o -+ipts-objs += thread.o -diff --git a/drivers/hid/ipts/cmd.c b/drivers/hid/ipts/cmd.c -new file mode 100644 -index 000000000000..7fd69271ccd5 ---- /dev/null -+++ b/drivers/hid/ipts/cmd.c -@@ -0,0 +1,62 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+ -+#include "cmd.h" -+#include "context.h" -+#include "mei.h" -+#include "spec-device.h" -+ -+int ipts_cmd_recv_timeout(struct ipts_context *ipts, enum ipts_command_code code, -+ struct ipts_response *rsp, u64 timeout) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!rsp) -+ return -EFAULT; -+ -+ /* -+ * In a response, the command code will have the most significant bit flipped to 1. -+ * If code is passed to ipts_mei_recv as is, no messages will be received. -+ */ -+ ret = ipts_mei_recv(&ipts->mei, code | IPTS_RSP_BIT, rsp, timeout); -+ if (ret < 0) -+ return ret; -+ -+ dev_dbg(ipts->dev, "Received 0x%02X with status 0x%02X\n", code, rsp->status); -+ -+ /* -+ * Some devices will always return this error. -+ * It is allowed to ignore it and to try continuing. -+ */ -+ if (rsp->status == IPTS_STATUS_COMPAT_CHECK_FAIL) -+ rsp->status = IPTS_STATUS_SUCCESS; -+ -+ return 0; -+} -+ -+int ipts_cmd_send(struct ipts_context *ipts, enum ipts_command_code code, void *data, size_t size) -+{ -+ struct ipts_command cmd = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ cmd.cmd = code; -+ -+ if (data && size > 0) -+ memcpy(cmd.payload, data, size); -+ -+ dev_dbg(ipts->dev, "Sending 0x%02X with %ld bytes payload\n", code, size); -+ return ipts_mei_send(&ipts->mei, &cmd, sizeof(cmd.cmd) + size); -+} -diff --git a/drivers/hid/ipts/cmd.h b/drivers/hid/ipts/cmd.h -new file mode 100644 -index 000000000000..924758ffee67 ---- /dev/null -+++ b/drivers/hid/ipts/cmd.h -@@ -0,0 +1,61 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_CMD_H -+#define IPTS_CMD_H -+ -+#include -+ -+#include "context.h" -+#include "spec-device.h" -+ -+/* -+ * The default timeout for receiving responses -+ */ -+#define IPTS_CMD_DEFAULT_TIMEOUT 1000 -+ -+/* -+ * ipts_cmd_recv_timeout() - Receives a response to a command. -+ * @ipts: The IPTS driver context. -+ * @code: The type of the command / response. -+ * @rsp: The address that the received response will be copied to. -+ * @timeout: How many milliseconds the function will wait at most. -+ * -+ * A negative timeout means to wait forever. -+ * -+ * Returns: 0 on success, <0 on error, -EAGAIN if no response has been received. -+ */ -+int ipts_cmd_recv_timeout(struct ipts_context *ipts, enum ipts_command_code code, -+ struct ipts_response *rsp, u64 timeout); -+ -+/* -+ * ipts_cmd_recv() - Receives a response to a command. -+ * @ipts: The IPTS driver context. -+ * @code: The type of the command / response. -+ * @rsp: The address that the received response will be copied to. -+ * -+ * Returns: 0 on success, <0 on error, -EAGAIN if no response has been received. -+ */ -+static inline int ipts_cmd_recv(struct ipts_context *ipts, enum ipts_command_code code, -+ struct ipts_response *rsp) -+{ -+ return ipts_cmd_recv_timeout(ipts, code, rsp, IPTS_CMD_DEFAULT_TIMEOUT); -+} -+ -+/* -+ * ipts_cmd_send() - Executes a command on the device. -+ * @ipts: The IPTS driver context. -+ * @code: The type of the command to execute. -+ * @data: The payload containing parameters for the command. -+ * @size: The size of the payload. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_cmd_send(struct ipts_context *ipts, enum ipts_command_code code, void *data, size_t size); -+ -+#endif /* IPTS_CMD_H */ -diff --git a/drivers/hid/ipts/context.h b/drivers/hid/ipts/context.h -new file mode 100644 -index 000000000000..3450a95e66ee ---- /dev/null -+++ b/drivers/hid/ipts/context.h -@@ -0,0 +1,51 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_CONTEXT_H -+#define IPTS_CONTEXT_H -+ -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#include "mei.h" -+#include "resources.h" -+#include "spec-device.h" -+#include "thread.h" -+ -+struct ipts_context { -+ struct device *dev; -+ struct ipts_mei mei; -+ -+ enum ipts_mode mode; -+ -+ /* -+ * Prevents concurrent GET_FEATURE reports. -+ */ -+ struct mutex feature_lock; -+ struct completion feature_event; -+ -+ /* -+ * These are not inside of struct ipts_resources -+ * because they don't own the memory they point to. -+ */ -+ struct ipts_buffer feature_report; -+ struct ipts_buffer descriptor; -+ -+ struct hid_device *hid; -+ struct ipts_device_info info; -+ struct ipts_resources resources; -+ -+ struct ipts_thread receiver_loop; -+}; -+ -+#endif /* IPTS_CONTEXT_H */ -diff --git a/drivers/hid/ipts/control.c b/drivers/hid/ipts/control.c -new file mode 100644 -index 000000000000..2f61500b5119 ---- /dev/null -+++ b/drivers/hid/ipts/control.c -@@ -0,0 +1,495 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#include "cmd.h" -+#include "context.h" -+#include "control.h" -+#include "desc.h" -+#include "hid.h" -+#include "receiver.h" -+#include "resources.h" -+#include "spec-data.h" -+#include "spec-device.h" -+ -+static int ipts_control_get_device_info(struct ipts_context *ipts, struct ipts_device_info *info) -+{ -+ int ret = 0; -+ struct ipts_response rsp = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!info) -+ return -EFAULT; -+ -+ ret = ipts_cmd_send(ipts, IPTS_CMD_GET_DEVICE_INFO, NULL, 0); -+ if (ret) { -+ dev_err(ipts->dev, "GET_DEVICE_INFO: send failed: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_cmd_recv(ipts, IPTS_CMD_GET_DEVICE_INFO, &rsp); -+ if (ret) { -+ dev_err(ipts->dev, "GET_DEVICE_INFO: recv failed: %d\n", ret); -+ return ret; -+ } -+ -+ if (rsp.status != IPTS_STATUS_SUCCESS) { -+ dev_err(ipts->dev, "GET_DEVICE_INFO: cmd failed: %d\n", rsp.status); -+ return -EBADR; -+ } -+ -+ memcpy(info, rsp.payload, sizeof(*info)); -+ return 0; -+} -+ -+static int ipts_control_set_mode(struct ipts_context *ipts, enum ipts_mode mode) -+{ -+ int ret = 0; -+ struct ipts_set_mode cmd = { 0 }; -+ struct ipts_response rsp = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ cmd.mode = mode; -+ -+ ret = ipts_cmd_send(ipts, IPTS_CMD_SET_MODE, &cmd, sizeof(cmd)); -+ if (ret) { -+ dev_err(ipts->dev, "SET_MODE: send failed: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_cmd_recv(ipts, IPTS_CMD_SET_MODE, &rsp); -+ if (ret) { -+ dev_err(ipts->dev, "SET_MODE: recv failed: %d\n", ret); -+ return ret; -+ } -+ -+ if (rsp.status != IPTS_STATUS_SUCCESS) { -+ dev_err(ipts->dev, "SET_MODE: cmd failed: %d\n", rsp.status); -+ return -EBADR; -+ } -+ -+ return 0; -+} -+ -+static int ipts_control_set_mem_window(struct ipts_context *ipts, struct ipts_resources *res) -+{ -+ int ret = 0; -+ struct ipts_mem_window cmd = { 0 }; -+ struct ipts_response rsp = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!res) -+ return -EFAULT; -+ -+ for (int i = 0; i < IPTS_BUFFERS; i++) { -+ cmd.data_addr_lower[i] = lower_32_bits(res->data[i].dma_address); -+ cmd.data_addr_upper[i] = upper_32_bits(res->data[i].dma_address); -+ cmd.feedback_addr_lower[i] = lower_32_bits(res->feedback[i].dma_address); -+ cmd.feedback_addr_upper[i] = upper_32_bits(res->feedback[i].dma_address); -+ } -+ -+ cmd.workqueue_addr_lower = lower_32_bits(res->workqueue.dma_address); -+ cmd.workqueue_addr_upper = upper_32_bits(res->workqueue.dma_address); -+ -+ cmd.doorbell_addr_lower = lower_32_bits(res->doorbell.dma_address); -+ cmd.doorbell_addr_upper = upper_32_bits(res->doorbell.dma_address); -+ -+ cmd.hid2me_addr_lower = lower_32_bits(res->hid2me.dma_address); -+ cmd.hid2me_addr_upper = upper_32_bits(res->hid2me.dma_address); -+ -+ cmd.workqueue_size = IPTS_WORKQUEUE_SIZE; -+ cmd.workqueue_item_size = IPTS_WORKQUEUE_ITEM_SIZE; -+ -+ ret = ipts_cmd_send(ipts, IPTS_CMD_SET_MEM_WINDOW, &cmd, sizeof(cmd)); -+ if (ret) { -+ dev_err(ipts->dev, "SET_MEM_WINDOW: send failed: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_cmd_recv(ipts, IPTS_CMD_SET_MEM_WINDOW, &rsp); -+ if (ret) { -+ dev_err(ipts->dev, "SET_MEM_WINDOW: recv failed: %d\n", ret); -+ return ret; -+ } -+ -+ if (rsp.status != IPTS_STATUS_SUCCESS) { -+ dev_err(ipts->dev, "SET_MEM_WINDOW: cmd failed: %d\n", rsp.status); -+ return -EBADR; -+ } -+ -+ return 0; -+} -+ -+static int ipts_control_get_descriptor(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ struct ipts_data_header *header = NULL; -+ struct ipts_get_descriptor cmd = { 0 }; -+ struct ipts_response rsp = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!ipts->resources.descriptor.address) -+ return -EFAULT; -+ -+ memset(ipts->resources.descriptor.address, 0, ipts->resources.descriptor.size); -+ -+ cmd.addr_lower = lower_32_bits(ipts->resources.descriptor.dma_address); -+ cmd.addr_upper = upper_32_bits(ipts->resources.descriptor.dma_address); -+ cmd.magic = 8; -+ -+ ret = ipts_cmd_send(ipts, IPTS_CMD_GET_DESCRIPTOR, &cmd, sizeof(cmd)); -+ if (ret) { -+ dev_err(ipts->dev, "GET_DESCRIPTOR: send failed: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_cmd_recv(ipts, IPTS_CMD_GET_DESCRIPTOR, &rsp); -+ if (ret) { -+ dev_err(ipts->dev, "GET_DESCRIPTOR: recv failed: %d\n", ret); -+ return ret; -+ } -+ -+ if (rsp.status != IPTS_STATUS_SUCCESS) { -+ dev_err(ipts->dev, "GET_DESCRIPTOR: cmd failed: %d\n", rsp.status); -+ return -EBADR; -+ } -+ -+ header = (struct ipts_data_header *)ipts->resources.descriptor.address; -+ -+ if (header->type == IPTS_DATA_TYPE_DESCRIPTOR) { -+ ipts->descriptor.address = &header->data[8]; -+ ipts->descriptor.size = header->size - 8; -+ -+ return 0; -+ } -+ -+ return -ENODATA; -+} -+ -+int ipts_control_request_flush(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ struct ipts_quiesce_io cmd = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ ret = ipts_cmd_send(ipts, IPTS_CMD_QUIESCE_IO, &cmd, sizeof(cmd)); -+ if (ret) -+ dev_err(ipts->dev, "QUIESCE_IO: send failed: %d\n", ret); -+ -+ return ret; -+} -+ -+int ipts_control_wait_flush(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ struct ipts_response rsp = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ ret = ipts_cmd_recv(ipts, IPTS_CMD_QUIESCE_IO, &rsp); -+ if (ret) { -+ dev_err(ipts->dev, "QUIESCE_IO: recv failed: %d\n", ret); -+ return ret; -+ } -+ -+ if (rsp.status == IPTS_STATUS_TIMEOUT) -+ return -EAGAIN; -+ -+ if (rsp.status != IPTS_STATUS_SUCCESS) { -+ dev_err(ipts->dev, "QUIESCE_IO: cmd failed: %d\n", rsp.status); -+ return -EBADR; -+ } -+ -+ return 0; -+} -+ -+int ipts_control_request_data(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ ret = ipts_cmd_send(ipts, IPTS_CMD_READY_FOR_DATA, NULL, 0); -+ if (ret) -+ dev_err(ipts->dev, "READY_FOR_DATA: send failed: %d\n", ret); -+ -+ return ret; -+} -+ -+int ipts_control_wait_data(struct ipts_context *ipts, bool shutdown) -+{ -+ int ret = 0; -+ struct ipts_response rsp = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!shutdown) -+ ret = ipts_cmd_recv_timeout(ipts, IPTS_CMD_READY_FOR_DATA, &rsp, 0); -+ else -+ ret = ipts_cmd_recv(ipts, IPTS_CMD_READY_FOR_DATA, &rsp); -+ -+ if (ret) { -+ if (ret != -EAGAIN) -+ dev_err(ipts->dev, "READY_FOR_DATA: recv failed: %d\n", ret); -+ -+ return ret; -+ } -+ -+ /* -+ * During shutdown, it is possible that the sensor has already been disabled. -+ */ -+ if (rsp.status == IPTS_STATUS_SENSOR_DISABLED) -+ return 0; -+ -+ if (rsp.status == IPTS_STATUS_TIMEOUT) -+ return -EAGAIN; -+ -+ if (rsp.status != IPTS_STATUS_SUCCESS) { -+ dev_err(ipts->dev, "READY_FOR_DATA: cmd failed: %d\n", rsp.status); -+ return -EBADR; -+ } -+ -+ return 0; -+} -+ -+int ipts_control_send_feedback(struct ipts_context *ipts, u32 buffer) -+{ -+ int ret = 0; -+ struct ipts_feedback cmd = { 0 }; -+ struct ipts_response rsp = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ cmd.buffer = buffer; -+ -+ ret = ipts_cmd_send(ipts, IPTS_CMD_FEEDBACK, &cmd, sizeof(cmd)); -+ if (ret) { -+ dev_err(ipts->dev, "FEEDBACK: send failed: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_cmd_recv(ipts, IPTS_CMD_FEEDBACK, &rsp); -+ if (ret) { -+ dev_err(ipts->dev, "FEEDBACK: recv failed: %d\n", ret); -+ return ret; -+ } -+ -+ /* -+ * We don't know what feedback data looks like so we are sending zeros. -+ * See also ipts_control_refill_buffer. -+ */ -+ if (rsp.status == IPTS_STATUS_INVALID_PARAMS) -+ return 0; -+ -+ if (rsp.status != IPTS_STATUS_SUCCESS) { -+ dev_err(ipts->dev, "FEEDBACK: cmd failed: %d\n", rsp.status); -+ return -EBADR; -+ } -+ -+ return 0; -+} -+ -+int ipts_control_hid2me_feedback(struct ipts_context *ipts, enum ipts_feedback_cmd_type cmd, -+ enum ipts_feedback_data_type type, void *data, size_t size) -+{ -+ struct ipts_feedback_header *header = NULL; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!ipts->resources.hid2me.address) -+ return -EFAULT; -+ -+ memset(ipts->resources.hid2me.address, 0, ipts->resources.hid2me.size); -+ header = (struct ipts_feedback_header *)ipts->resources.hid2me.address; -+ -+ header->cmd_type = cmd; -+ header->data_type = type; -+ header->size = size; -+ header->buffer = IPTS_HID2ME_BUFFER; -+ -+ if (size + sizeof(*header) > ipts->resources.hid2me.size) -+ return -EINVAL; -+ -+ if (data && size > 0) -+ memcpy(header->payload, data, size); -+ -+ return ipts_control_send_feedback(ipts, IPTS_HID2ME_BUFFER); -+} -+ -+static inline int ipts_control_reset_sensor(struct ipts_context *ipts) -+{ -+ return ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_SOFT_RESET, -+ IPTS_FEEDBACK_DATA_TYPE_VENDOR, NULL, 0); -+} -+ -+int ipts_control_start(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ struct ipts_device_info info = { 0 }; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ dev_info(ipts->dev, "Starting IPTS\n"); -+ -+ ret = ipts_control_get_device_info(ipts, &info); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to get device info: %d\n", ret); -+ return ret; -+ } -+ -+ ipts->info = info; -+ -+ ret = ipts_resources_init(&ipts->resources, ipts->dev, info.data_size, info.feedback_size); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to allocate buffers: %d", ret); -+ return ret; -+ } -+ -+ dev_info(ipts->dev, "IPTS EDS Version: %d\n", info.intf_eds); -+ -+ /* -+ * Handle newer devices -+ */ -+ if (info.intf_eds > 1) { -+ /* -+ * Fetching the descriptor will only work on newer devices. -+ * For older devices, a fallback descriptor will be used. -+ */ -+ ret = ipts_control_get_descriptor(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to fetch HID descriptor: %d\n", ret); -+ return ret; -+ } -+ -+ /* -+ * Newer devices can be directly initialized in doorbell mode. -+ */ -+ ipts->mode = IPTS_MODE_DOORBELL; -+ } -+ -+ ret = ipts_control_set_mode(ipts, ipts->mode); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to set mode: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_control_set_mem_window(ipts, &ipts->resources); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to set memory window: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_receiver_start(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to start receiver: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_control_request_data(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to request data: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_hid_init(ipts, info); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to initialize HID device: %d\n", ret); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+static int _ipts_control_stop(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ dev_info(ipts->dev, "Stopping IPTS\n"); -+ -+ ret = ipts_receiver_stop(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to stop receiver: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_control_reset_sensor(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to reset sensor: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_resources_free(&ipts->resources); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to free resources: %d\n", ret); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+int ipts_control_stop(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ -+ ret = _ipts_control_stop(ipts); -+ if (ret) -+ return ret; -+ -+ ret = ipts_hid_free(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to free HID device: %d\n", ret); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+int ipts_control_restart(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ -+ ret = _ipts_control_stop(ipts); -+ if (ret) -+ return ret; -+ -+ /* -+ * Give the sensor some time to come back from resetting -+ */ -+ msleep(1000); -+ -+ ret = ipts_control_start(ipts); -+ if (ret) -+ return ret; -+ -+ return 0; -+} -diff --git a/drivers/hid/ipts/control.h b/drivers/hid/ipts/control.h -new file mode 100644 -index 000000000000..744bb92d682a ---- /dev/null -+++ b/drivers/hid/ipts/control.h -@@ -0,0 +1,127 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_CONTROL_H -+#define IPTS_CONTROL_H -+ -+#include -+ -+#include "context.h" -+#include "spec-data.h" -+#include "spec-device.h" -+ -+/* -+ * ipts_control_request_flush() - Stop the data flow. -+ * @ipts: The IPTS driver context. -+ * -+ * Runs the command to stop the data flow on the device. -+ * All outstanding data needs to be acknowledged using feedback before the command will return. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_control_request_flush(struct ipts_context *ipts); -+ -+/* -+ * ipts_control_wait_flush() - Wait until data flow has been stopped. -+ * @ipts: The IPTS driver context. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_control_wait_flush(struct ipts_context *ipts); -+ -+/* -+ * ipts_control_wait_flush() - Notify the device that the driver can receive new data. -+ * @ipts: The IPTS driver context. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_control_request_data(struct ipts_context *ipts); -+ -+/* -+ * ipts_control_wait_data() - Wait until new data is available. -+ * @ipts: The IPTS driver context. -+ * @block: Whether to block execution until data is available. -+ * -+ * In doorbell mode, this function will never return while the data flow is active. Instead, -+ * the doorbell will be incremented when new data is available. -+ * -+ * Returns: 0 on success, <0 on error, -EAGAIN if no data is available. -+ */ -+int ipts_control_wait_data(struct ipts_context *ipts, bool block); -+ -+/* -+ * ipts_control_send_feedback() - Submits a feedback buffer to the device. -+ * @ipts: The IPTS driver context. -+ * @buffer: The ID of the buffer containing feedback data. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_control_send_feedback(struct ipts_context *ipts, u32 buffer); -+ -+/* -+ * ipts_control_hid2me_feedback() - Sends HID2ME feedback, a special type of feedback. -+ * @ipts: The IPTS driver context. -+ * @cmd: The command that will be run on the device. -+ * @type: The type of the payload that is sent to the device. -+ * @data: The payload of the feedback command. -+ * @size: The size of the payload. -+ * -+ * HID2ME feedback is a special type of feedback, because it allows interfacing with -+ * the HID API of the device at any moment, without requiring a buffer that has to -+ * be acknowledged. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_control_hid2me_feedback(struct ipts_context *ipts, enum ipts_feedback_cmd_type cmd, -+ enum ipts_feedback_data_type type, void *data, size_t size); -+ -+/* -+ * ipts_control_refill_buffer() - Acknowledges that data in a buffer has been processed. -+ * @ipts: The IPTS driver context. -+ * @buffer: The buffer that has been processed and can be refilled. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+static inline int ipts_control_refill_buffer(struct ipts_context *ipts, u32 buffer) -+{ -+ /* -+ * IPTS expects structured data in the feedback buffer matching the buffer that will be -+ * refilled. We don't know what that data looks like, so we just keep the buffer empty. -+ * This results in an INVALID_PARAMS error, but the buffer gets refilled without an issue. -+ * Sending a minimal structure with the buffer ID fixes the error, but breaks refilling -+ * the buffers on some devices. -+ */ -+ -+ return ipts_control_send_feedback(ipts, buffer); -+} -+ -+/* -+ * ipts_control_start() - Initialized the device and starts the data flow. -+ * @ipts: The IPTS driver context. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_control_start(struct ipts_context *ipts); -+ -+/* -+ * ipts_control_stop() - Stops the data flow and resets the device. -+ * @ipts: The IPTS driver context. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_control_stop(struct ipts_context *ipts); -+ -+/* -+ * ipts_control_restart() - Stops the device and starts it again. -+ * @ipts: The IPTS driver context. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_control_restart(struct ipts_context *ipts); -+ -+#endif /* IPTS_CONTROL_H */ -diff --git a/drivers/hid/ipts/desc.h b/drivers/hid/ipts/desc.h -new file mode 100644 -index 000000000000..c058974a03a1 ---- /dev/null -+++ b/drivers/hid/ipts/desc.h -@@ -0,0 +1,81 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2022-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_DESC_H -+#define IPTS_DESC_H -+ -+#include -+ -+#define IPTS_HID_REPORT_SINGLETOUCH 64 -+#define IPTS_HID_REPORT_DATA 65 -+#define IPTS_HID_REPORT_SET_MODE 66 -+ -+#define IPTS_HID_REPORT_DATA_SIZE 7485 -+ -+/* -+ * HID descriptor for singletouch data. -+ * This descriptor should be present on all IPTS devices. -+ */ -+static const u8 ipts_singletouch_descriptor[] = { -+ 0x05, 0x0D, /* Usage Page (Digitizer), */ -+ 0x09, 0x04, /* Usage (Touchscreen), */ -+ 0xA1, 0x01, /* Collection (Application), */ -+ 0x85, 0x40, /* Report ID (64), */ -+ 0x09, 0x42, /* Usage (Tip Switch), */ -+ 0x15, 0x00, /* Logical Minimum (0), */ -+ 0x25, 0x01, /* Logical Maximum (1), */ -+ 0x75, 0x01, /* Report Size (1), */ -+ 0x95, 0x01, /* Report Count (1), */ -+ 0x81, 0x02, /* Input (Variable), */ -+ 0x95, 0x07, /* Report Count (7), */ -+ 0x81, 0x03, /* Input (Constant, Variable), */ -+ 0x05, 0x01, /* Usage Page (Desktop), */ -+ 0x09, 0x30, /* Usage (X), */ -+ 0x75, 0x10, /* Report Size (16), */ -+ 0x95, 0x01, /* Report Count (1), */ -+ 0xA4, /* Push, */ -+ 0x55, 0x0E, /* Unit Exponent (14), */ -+ 0x65, 0x11, /* Unit (Centimeter), */ -+ 0x46, 0x76, 0x0B, /* Physical Maximum (2934), */ -+ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ -+ 0x81, 0x02, /* Input (Variable), */ -+ 0x09, 0x31, /* Usage (Y), */ -+ 0x46, 0x74, 0x06, /* Physical Maximum (1652), */ -+ 0x26, 0xFF, 0x7F, /* Logical Maximum (32767), */ -+ 0x81, 0x02, /* Input (Variable), */ -+ 0xB4, /* Pop, */ -+ 0xC0, /* End Collection */ -+}; -+ -+/* -+ * Fallback HID descriptor for older devices that do not have -+ * the ability to query their HID descriptor. -+ */ -+static const u8 ipts_fallback_descriptor[] = { -+ 0x05, 0x0D, /* Usage Page (Digitizer), */ -+ 0x09, 0x0F, /* Usage (Capacitive Hm Digitizer), */ -+ 0xA1, 0x01, /* Collection (Application), */ -+ 0x85, 0x41, /* Report ID (65), */ -+ 0x09, 0x56, /* Usage (Scan Time), */ -+ 0x95, 0x01, /* Report Count (1), */ -+ 0x75, 0x10, /* Report Size (16), */ -+ 0x81, 0x02, /* Input (Variable), */ -+ 0x09, 0x61, /* Usage (Gesture Char Quality), */ -+ 0x75, 0x08, /* Report Size (8), */ -+ 0x96, 0x3D, 0x1D, /* Report Count (7485), */ -+ 0x81, 0x03, /* Input (Constant, Variable), */ -+ 0x85, 0x42, /* Report ID (66), */ -+ 0x06, 0x00, 0xFF, /* Usage Page (FF00h), */ -+ 0x09, 0xC8, /* Usage (C8h), */ -+ 0x75, 0x08, /* Report Size (8), */ -+ 0x95, 0x01, /* Report Count (1), */ -+ 0xB1, 0x02, /* Feature (Variable), */ -+ 0xC0, /* End Collection, */ -+}; -+ -+#endif /* IPTS_DESC_H */ -diff --git a/drivers/hid/ipts/hid.c b/drivers/hid/ipts/hid.c -new file mode 100644 -index 000000000000..6782394e8dde ---- /dev/null -+++ b/drivers/hid/ipts/hid.c -@@ -0,0 +1,348 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2022-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#include "context.h" -+#include "control.h" -+#include "desc.h" -+#include "hid.h" -+#include "spec-data.h" -+#include "spec-device.h" -+#include "spec-hid.h" -+ -+static int ipts_hid_start(struct hid_device *hid) -+{ -+ return 0; -+} -+ -+static void ipts_hid_stop(struct hid_device *hid) -+{ -+} -+ -+static int ipts_hid_switch_mode(struct ipts_context *ipts, enum ipts_mode mode) -+{ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (ipts->mode == mode) -+ return 0; -+ -+ /* -+ * This is only allowed on older devices. -+ */ -+ if (ipts->info.intf_eds > 1) -+ return 0; -+ -+ ipts->mode = mode; -+ return ipts_control_restart(ipts); -+} -+ -+static int ipts_hid_parse(struct hid_device *hid) -+{ -+ int ret = 0; -+ struct ipts_context *ipts = NULL; -+ -+ bool has_native_descriptor = false; -+ -+ u8 *buffer = NULL; -+ size_t size = 0; -+ -+ if (!hid) -+ return -ENODEV; -+ -+ ipts = hid->driver_data; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ size = sizeof(ipts_singletouch_descriptor); -+ has_native_descriptor = ipts->descriptor.address && ipts->descriptor.size > 0; -+ -+ if (has_native_descriptor) -+ size += ipts->descriptor.size; -+ else -+ size += sizeof(ipts_fallback_descriptor); -+ -+ buffer = kzalloc(size, GFP_KERNEL); -+ if (!buffer) -+ return -ENOMEM; -+ -+ memcpy(buffer, ipts_singletouch_descriptor, sizeof(ipts_singletouch_descriptor)); -+ -+ if (has_native_descriptor) { -+ memcpy(&buffer[sizeof(ipts_singletouch_descriptor)], ipts->descriptor.address, -+ ipts->descriptor.size); -+ } else { -+ memcpy(&buffer[sizeof(ipts_singletouch_descriptor)], ipts_fallback_descriptor, -+ sizeof(ipts_fallback_descriptor)); -+ } -+ -+ ret = hid_parse_report(hid, buffer, size); -+ kfree(buffer); -+ -+ if (ret) { -+ dev_err(ipts->dev, "Failed to parse HID descriptor: %d\n", ret); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+static int ipts_hid_get_feature(struct ipts_context *ipts, unsigned char reportnum, __u8 *buf, -+ size_t size, enum ipts_feedback_data_type type) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!buf) -+ return -EFAULT; -+ -+ mutex_lock(&ipts->feature_lock); -+ -+ memset(buf, 0, size); -+ buf[0] = reportnum; -+ -+ memset(&ipts->feature_report, 0, sizeof(ipts->feature_report)); -+ reinit_completion(&ipts->feature_event); -+ -+ ret = ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_NONE, type, buf, size); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to send hid2me feedback: %d\n", ret); -+ goto out; -+ } -+ -+ ret = wait_for_completion_timeout(&ipts->feature_event, msecs_to_jiffies(5000)); -+ if (ret == 0) { -+ dev_warn(ipts->dev, "GET_FEATURES timed out!\n"); -+ ret = -EIO; -+ goto out; -+ } -+ -+ if (!ipts->feature_report.address) { -+ ret = -EFAULT; -+ goto out; -+ } -+ -+ if (ipts->feature_report.size > size) { -+ ret = -ETOOSMALL; -+ goto out; -+ } -+ -+ ret = ipts->feature_report.size; -+ memcpy(buf, ipts->feature_report.address, ipts->feature_report.size); -+ -+out: -+ mutex_unlock(&ipts->feature_lock); -+ return ret; -+} -+ -+static int ipts_hid_set_feature(struct ipts_context *ipts, unsigned char reportnum, __u8 *buf, -+ size_t size, enum ipts_feedback_data_type type) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!buf) -+ return -EFAULT; -+ -+ buf[0] = reportnum; -+ -+ ret = ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_NONE, type, buf, size); -+ if (ret) -+ dev_err(ipts->dev, "Failed to send hid2me feedback: %d\n", ret); -+ -+ return ret; -+} -+ -+static int ipts_hid_raw_request(struct hid_device *hid, unsigned char reportnum, __u8 *buf, -+ size_t size, unsigned char rtype, int reqtype) -+{ -+ int ret = 0; -+ struct ipts_context *ipts = NULL; -+ -+ enum ipts_feedback_data_type type = IPTS_FEEDBACK_DATA_TYPE_VENDOR; -+ -+ if (!hid) -+ return -ENODEV; -+ -+ ipts = hid->driver_data; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!buf) -+ return -EFAULT; -+ -+ if (rtype == HID_OUTPUT_REPORT && reqtype == HID_REQ_SET_REPORT) -+ type = IPTS_FEEDBACK_DATA_TYPE_OUTPUT_REPORT; -+ else if (rtype == HID_FEATURE_REPORT && reqtype == HID_REQ_GET_REPORT) -+ type = IPTS_FEEDBACK_DATA_TYPE_GET_FEATURES; -+ else if (rtype == HID_FEATURE_REPORT && reqtype == HID_REQ_SET_REPORT) -+ type = IPTS_FEEDBACK_DATA_TYPE_SET_FEATURES; -+ else -+ return -EIO; -+ -+ // Implemente mode switching report for older devices without native HID support -+ if (type == IPTS_FEEDBACK_DATA_TYPE_SET_FEATURES && reportnum == IPTS_HID_REPORT_SET_MODE) { -+ ret = ipts_hid_switch_mode(ipts, buf[1]); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to switch modes: %d\n", ret); -+ return ret; -+ } -+ } -+ -+ if (reqtype == HID_REQ_GET_REPORT) -+ return ipts_hid_get_feature(ipts, reportnum, buf, size, type); -+ else -+ return ipts_hid_set_feature(ipts, reportnum, buf, size, type); -+} -+ -+static int ipts_hid_output_report(struct hid_device *hid, __u8 *data, size_t size) -+{ -+ struct ipts_context *ipts = NULL; -+ -+ if (!hid) -+ return -ENODEV; -+ -+ ipts = hid->driver_data; -+ -+ return ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_NONE, -+ IPTS_FEEDBACK_DATA_TYPE_OUTPUT_REPORT, data, size); -+} -+ -+static struct hid_ll_driver ipts_hid_driver = { -+ .start = ipts_hid_start, -+ .stop = ipts_hid_stop, -+ .open = ipts_hid_start, -+ .close = ipts_hid_stop, -+ .parse = ipts_hid_parse, -+ .raw_request = ipts_hid_raw_request, -+ .output_report = ipts_hid_output_report, -+}; -+ -+int ipts_hid_input_data(struct ipts_context *ipts, u32 buffer) -+{ -+ int ret = 0; -+ u8 *temp = NULL; -+ struct ipts_hid_header *frame = NULL; -+ struct ipts_data_header *header = NULL; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!ipts->hid) -+ return -ENODEV; -+ -+ header = (struct ipts_data_header *)ipts->resources.data[buffer].address; -+ -+ if (!header) -+ return -EFAULT; -+ -+ if (header->size == 0) -+ return 0; -+ -+ if (header->type == IPTS_DATA_TYPE_HID) -+ return hid_input_report(ipts->hid, HID_INPUT_REPORT, header->data, header->size, 1); -+ -+ if (header->type == IPTS_DATA_TYPE_GET_FEATURES) { -+ ipts->feature_report.address = header->data; -+ ipts->feature_report.size = header->size; -+ -+ complete_all(&ipts->feature_event); -+ return 0; -+ } -+ -+ if (header->type != IPTS_DATA_TYPE_FRAME) -+ return 0; -+ -+ if (header->size + 3 + sizeof(struct ipts_hid_header) > IPTS_HID_REPORT_DATA_SIZE) -+ return -ERANGE; -+ -+ temp = kzalloc(IPTS_HID_REPORT_DATA_SIZE, GFP_KERNEL); -+ if (!temp) -+ return -ENOMEM; -+ -+ /* -+ * Synthesize a HID report matching the devices that natively send HID reports -+ */ -+ temp[0] = IPTS_HID_REPORT_DATA; -+ -+ frame = (struct ipts_hid_header *)&temp[3]; -+ frame->type = IPTS_HID_FRAME_TYPE_RAW; -+ frame->size = header->size + sizeof(*frame); -+ -+ memcpy(frame->data, header->data, header->size); -+ -+ ret = hid_input_report(ipts->hid, HID_INPUT_REPORT, temp, IPTS_HID_REPORT_DATA_SIZE, 1); -+ kfree(temp); -+ -+ return ret; -+} -+ -+int ipts_hid_init(struct ipts_context *ipts, struct ipts_device_info info) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (ipts->hid) -+ return 0; -+ -+ ipts->hid = hid_allocate_device(); -+ if (IS_ERR(ipts->hid)) { -+ int err = PTR_ERR(ipts->hid); -+ -+ dev_err(ipts->dev, "Failed to allocate HID device: %d\n", err); -+ return err; -+ } -+ -+ ipts->hid->driver_data = ipts; -+ ipts->hid->dev.parent = ipts->dev; -+ ipts->hid->ll_driver = &ipts_hid_driver; -+ -+ ipts->hid->vendor = info.vendor; -+ ipts->hid->product = info.product; -+ ipts->hid->group = HID_GROUP_MULTITOUCH; -+ -+ snprintf(ipts->hid->name, sizeof(ipts->hid->name), "IPTS %04X:%04X", info.vendor, -+ info.product); -+ -+ ret = hid_add_device(ipts->hid); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to add HID device: %d\n", ret); -+ ipts_hid_free(ipts); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+int ipts_hid_free(struct ipts_context *ipts) -+{ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!ipts->hid) -+ return 0; -+ -+ hid_destroy_device(ipts->hid); -+ ipts->hid = NULL; -+ -+ return 0; -+} -diff --git a/drivers/hid/ipts/hid.h b/drivers/hid/ipts/hid.h -new file mode 100644 -index 000000000000..62bf3cd48608 ---- /dev/null -+++ b/drivers/hid/ipts/hid.h -@@ -0,0 +1,22 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2022-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_HID_H -+#define IPTS_HID_H -+ -+#include -+ -+#include "context.h" -+#include "spec-device.h" -+ -+int ipts_hid_input_data(struct ipts_context *ipts, u32 buffer); -+ -+int ipts_hid_init(struct ipts_context *ipts, struct ipts_device_info info); -+int ipts_hid_free(struct ipts_context *ipts); -+ -+#endif /* IPTS_HID_H */ -diff --git a/drivers/hid/ipts/main.c b/drivers/hid/ipts/main.c -new file mode 100644 -index 000000000000..0f20c6c08c38 ---- /dev/null -+++ b/drivers/hid/ipts/main.c -@@ -0,0 +1,127 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#include "context.h" -+#include "control.h" -+#include "mei.h" -+#include "receiver.h" -+#include "spec-device.h" -+ -+/* -+ * The MEI client ID for IPTS functionality. -+ */ -+#define IPTS_ID UUID_LE(0x3e8d0870, 0x271a, 0x4208, 0x8e, 0xb5, 0x9a, 0xcb, 0x94, 0x02, 0xae, 0x04) -+ -+static int ipts_set_dma_mask(struct mei_cl_device *cldev) -+{ -+ if (!cldev) -+ return -EFAULT; -+ -+ if (!dma_coerce_mask_and_coherent(&cldev->dev, DMA_BIT_MASK(64))) -+ return 0; -+ -+ return dma_coerce_mask_and_coherent(&cldev->dev, DMA_BIT_MASK(32)); -+} -+ -+static int ipts_probe(struct mei_cl_device *cldev, const struct mei_cl_device_id *id) -+{ -+ int ret = 0; -+ struct ipts_context *ipts = NULL; -+ -+ if (!cldev) -+ return -EFAULT; -+ -+ ret = ipts_set_dma_mask(cldev); -+ if (ret) { -+ dev_err(&cldev->dev, "Failed to set DMA mask for IPTS: %d\n", ret); -+ return ret; -+ } -+ -+ ret = mei_cldev_enable(cldev); -+ if (ret) { -+ dev_err(&cldev->dev, "Failed to enable MEI device: %d\n", ret); -+ return ret; -+ } -+ -+ ipts = devm_kzalloc(&cldev->dev, sizeof(*ipts), GFP_KERNEL); -+ if (!ipts) { -+ mei_cldev_disable(cldev); -+ return -ENOMEM; -+ } -+ -+ ret = ipts_mei_init(&ipts->mei, cldev); -+ if (ret) { -+ dev_err(&cldev->dev, "Failed to init MEI bus logic: %d\n", ret); -+ return ret; -+ } -+ -+ ipts->dev = &cldev->dev; -+ ipts->mode = IPTS_MODE_EVENT; -+ -+ mutex_init(&ipts->feature_lock); -+ init_completion(&ipts->feature_event); -+ -+ mei_cldev_set_drvdata(cldev, ipts); -+ -+ ret = ipts_control_start(ipts); -+ if (ret) { -+ dev_err(&cldev->dev, "Failed to start IPTS: %d\n", ret); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+static void ipts_remove(struct mei_cl_device *cldev) -+{ -+ int ret = 0; -+ struct ipts_context *ipts = NULL; -+ -+ if (!cldev) { -+ pr_err("MEI device is NULL!"); -+ return; -+ } -+ -+ ipts = mei_cldev_get_drvdata(cldev); -+ -+ ret = ipts_control_stop(ipts); -+ if (ret) -+ dev_err(&cldev->dev, "Failed to stop IPTS: %d\n", ret); -+ -+ mei_cldev_disable(cldev); -+} -+ -+static struct mei_cl_device_id ipts_device_id_table[] = { -+ { .uuid = IPTS_ID, .version = MEI_CL_VERSION_ANY }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(mei, ipts_device_id_table); -+ -+static struct mei_cl_driver ipts_driver = { -+ .id_table = ipts_device_id_table, -+ .name = "ipts", -+ .probe = ipts_probe, -+ .remove = ipts_remove, -+}; -+module_mei_cl_driver(ipts_driver); -+ -+MODULE_DESCRIPTION("IPTS touchscreen driver"); -+MODULE_AUTHOR("Dorian Stoll "); -+MODULE_LICENSE("GPL"); -diff --git a/drivers/hid/ipts/mei.c b/drivers/hid/ipts/mei.c -new file mode 100644 -index 000000000000..26666fd99b0c ---- /dev/null -+++ b/drivers/hid/ipts/mei.c -@@ -0,0 +1,189 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#include "context.h" -+#include "mei.h" -+ -+static void locked_list_add(struct list_head *new, struct list_head *head, -+ struct rw_semaphore *lock) -+{ -+ down_write(lock); -+ list_add(new, head); -+ up_write(lock); -+} -+ -+static void locked_list_del(struct list_head *entry, struct rw_semaphore *lock) -+{ -+ down_write(lock); -+ list_del(entry); -+ up_write(lock); -+} -+ -+static void ipts_mei_incoming(struct mei_cl_device *cldev) -+{ -+ ssize_t ret = 0; -+ struct ipts_mei_message *entry = NULL; -+ struct ipts_context *ipts = NULL; -+ -+ if (!cldev) { -+ pr_err("MEI device is NULL!"); -+ return; -+ } -+ -+ ipts = mei_cldev_get_drvdata(cldev); -+ if (!ipts) { -+ pr_err("IPTS driver context is NULL!"); -+ return; -+ } -+ -+ entry = devm_kzalloc(ipts->dev, sizeof(*entry), GFP_KERNEL); -+ if (!entry) -+ return; -+ -+ INIT_LIST_HEAD(&entry->list); -+ -+ do { -+ ret = mei_cldev_recv(cldev, (u8 *)&entry->rsp, sizeof(entry->rsp)); -+ } while (ret == -EINTR); -+ -+ if (ret < 0) { -+ dev_err(ipts->dev, "Error while reading response: %ld\n", ret); -+ return; -+ } -+ -+ if (ret == 0) { -+ dev_err(ipts->dev, "Received empty response\n"); -+ return; -+ } -+ -+ locked_list_add(&entry->list, &ipts->mei.messages, &ipts->mei.message_lock); -+ wake_up_all(&ipts->mei.message_queue); -+} -+ -+static int ipts_mei_search(struct ipts_mei *mei, enum ipts_command_code code, -+ struct ipts_response *rsp) -+{ -+ struct ipts_mei_message *entry = NULL; -+ -+ if (!mei) -+ return -EFAULT; -+ -+ if (!rsp) -+ return -EFAULT; -+ -+ down_read(&mei->message_lock); -+ -+ /* -+ * Iterate over the list of received messages, and check if there is one -+ * matching the requested command code. -+ */ -+ list_for_each_entry(entry, &mei->messages, list) { -+ if (entry->rsp.cmd == code) -+ break; -+ } -+ -+ up_read(&mei->message_lock); -+ -+ /* -+ * If entry is not the list head, this means that the loop above has been stopped early, -+ * and that we found a matching element. We drop the message from the list and return it. -+ */ -+ if (!list_entry_is_head(entry, &mei->messages, list)) { -+ locked_list_del(&entry->list, &mei->message_lock); -+ -+ *rsp = entry->rsp; -+ devm_kfree(&mei->cldev->dev, entry); -+ -+ return 0; -+ } -+ -+ return -EAGAIN; -+} -+ -+int ipts_mei_recv(struct ipts_mei *mei, enum ipts_command_code code, struct ipts_response *rsp, -+ u64 timeout) -+{ -+ int ret = 0; -+ -+ if (!mei) -+ return -EFAULT; -+ -+ /* -+ * A timeout of 0 means check and return immideately. -+ */ -+ if (timeout == 0) -+ return ipts_mei_search(mei, code, rsp); -+ -+ /* -+ * A timeout of less than 0 means to wait forever. -+ */ -+ if (timeout < 0) { -+ wait_event(mei->message_queue, ipts_mei_search(mei, code, rsp) == 0); -+ return 0; -+ } -+ -+ ret = wait_event_timeout(mei->message_queue, ipts_mei_search(mei, code, rsp) == 0, -+ msecs_to_jiffies(timeout)); -+ -+ if (ret > 0) -+ return 0; -+ -+ return -EAGAIN; -+} -+ -+int ipts_mei_send(struct ipts_mei *mei, void *data, size_t length) -+{ -+ int ret = 0; -+ -+ if (!mei) -+ return -EFAULT; -+ -+ if (!mei->cldev) -+ return -EFAULT; -+ -+ if (!data) -+ return -EFAULT; -+ -+ do { -+ ret = mei_cldev_send(mei->cldev, (u8 *)data, length); -+ } while (ret == -EINTR); -+ -+ if (ret < 0) -+ return ret; -+ -+ return 0; -+} -+ -+int ipts_mei_init(struct ipts_mei *mei, struct mei_cl_device *cldev) -+{ -+ if (!mei) -+ return -EFAULT; -+ -+ if (!cldev) -+ return -EFAULT; -+ -+ mei->cldev = cldev; -+ -+ INIT_LIST_HEAD(&mei->messages); -+ init_waitqueue_head(&mei->message_queue); -+ init_rwsem(&mei->message_lock); -+ -+ mei_cldev_register_rx_cb(cldev, ipts_mei_incoming); -+ -+ return 0; -+} -diff --git a/drivers/hid/ipts/mei.h b/drivers/hid/ipts/mei.h -new file mode 100644 -index 000000000000..eadacae54c40 ---- /dev/null -+++ b/drivers/hid/ipts/mei.h -@@ -0,0 +1,67 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_MEI_H -+#define IPTS_MEI_H -+ -+#include -+#include -+#include -+#include -+#include -+ -+#include "spec-device.h" -+ -+struct ipts_mei_message { -+ struct list_head list; -+ struct ipts_response rsp; -+}; -+ -+struct ipts_mei { -+ struct mei_cl_device *cldev; -+ -+ struct list_head messages; -+ -+ wait_queue_head_t message_queue; -+ struct rw_semaphore message_lock; -+}; -+ -+/* -+ * ipts_mei_recv() - Receive data from a MEI device. -+ * @mei: The IPTS MEI device context. -+ * @code: The IPTS command code to look for. -+ * @rsp: The address that the received data will be copied to. -+ * @timeout: How many milliseconds the function will wait at most. -+ * -+ * A negative timeout means to wait forever. -+ * -+ * Returns: 0 on success, <0 on error, -EAGAIN if no response has been received. -+ */ -+int ipts_mei_recv(struct ipts_mei *mei, enum ipts_command_code code, struct ipts_response *rsp, -+ u64 timeout); -+ -+/* -+ * ipts_mei_send() - Send data to a MEI device. -+ * @ipts: The IPTS MEI device context. -+ * @data: The data to send. -+ * @size: The size of the data. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_mei_send(struct ipts_mei *mei, void *data, size_t length); -+ -+/* -+ * ipts_mei_init() - Initialize the MEI device context. -+ * @mei: The MEI device context to initialize. -+ * @cldev: The MEI device the context will be bound to. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_mei_init(struct ipts_mei *mei, struct mei_cl_device *cldev); -+ -+#endif /* IPTS_MEI_H */ -diff --git a/drivers/hid/ipts/receiver.c b/drivers/hid/ipts/receiver.c -new file mode 100644 -index 000000000000..77234f9e0e17 ---- /dev/null -+++ b/drivers/hid/ipts/receiver.c -@@ -0,0 +1,249 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#include "cmd.h" -+#include "context.h" -+#include "control.h" -+#include "hid.h" -+#include "resources.h" -+#include "spec-device.h" -+#include "thread.h" -+ -+static void ipts_receiver_next_doorbell(struct ipts_context *ipts) -+{ -+ u32 *doorbell = (u32 *)ipts->resources.doorbell.address; -+ *doorbell = *doorbell + 1; -+} -+ -+static u32 ipts_receiver_current_doorbell(struct ipts_context *ipts) -+{ -+ u32 *doorbell = (u32 *)ipts->resources.doorbell.address; -+ return *doorbell; -+} -+ -+static void ipts_receiver_backoff(time64_t last, u32 n) -+{ -+ /* -+ * If the last change was less than n seconds ago, -+ * sleep for a shorter period so that new data can be -+ * processed quickly. If there was no change for more than -+ * n seconds, sleep longer to avoid wasting CPU cycles. -+ */ -+ if (last + n > ktime_get_seconds()) -+ msleep(20); -+ else -+ msleep(200); -+} -+ -+static int ipts_receiver_event_loop(struct ipts_thread *thread) -+{ -+ int ret = 0; -+ u32 buffer = 0; -+ -+ struct ipts_context *ipts = NULL; -+ time64_t last = ktime_get_seconds(); -+ -+ if (!thread) -+ return -EFAULT; -+ -+ ipts = thread->data; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ dev_info(ipts->dev, "IPTS running in event mode\n"); -+ -+ while (!ipts_thread_should_stop(thread)) { -+ for (int i = 0; i < IPTS_BUFFERS; i++) { -+ ret = ipts_control_wait_data(ipts, false); -+ if (ret == -EAGAIN) -+ break; -+ -+ if (ret) { -+ dev_err(ipts->dev, "Failed to wait for data: %d\n", ret); -+ continue; -+ } -+ -+ buffer = ipts_receiver_current_doorbell(ipts) % IPTS_BUFFERS; -+ ipts_receiver_next_doorbell(ipts); -+ -+ ret = ipts_hid_input_data(ipts, buffer); -+ if (ret) -+ dev_err(ipts->dev, "Failed to process buffer: %d\n", ret); -+ -+ ret = ipts_control_refill_buffer(ipts, buffer); -+ if (ret) -+ dev_err(ipts->dev, "Failed to send feedback: %d\n", ret); -+ -+ ret = ipts_control_request_data(ipts); -+ if (ret) -+ dev_err(ipts->dev, "Failed to request data: %d\n", ret); -+ -+ last = ktime_get_seconds(); -+ } -+ -+ ipts_receiver_backoff(last, 5); -+ } -+ -+ ret = ipts_control_request_flush(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to request flush: %d\n", ret); -+ return ret; -+ } -+ -+ ret = ipts_control_wait_data(ipts, true); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to wait for data: %d\n", ret); -+ -+ if (ret != -EAGAIN) -+ return ret; -+ else -+ return 0; -+ } -+ -+ ret = ipts_control_wait_flush(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to wait for flush: %d\n", ret); -+ -+ if (ret != -EAGAIN) -+ return ret; -+ else -+ return 0; -+ } -+ -+ return 0; -+} -+ -+static int ipts_receiver_doorbell_loop(struct ipts_thread *thread) -+{ -+ int ret = 0; -+ u32 buffer = 0; -+ -+ u32 doorbell = 0; -+ u32 lastdb = 0; -+ -+ struct ipts_context *ipts = NULL; -+ time64_t last = ktime_get_seconds(); -+ -+ if (!thread) -+ return -EFAULT; -+ -+ ipts = thread->data; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ dev_info(ipts->dev, "IPTS running in doorbell mode\n"); -+ -+ while (true) { -+ if (ipts_thread_should_stop(thread)) { -+ ret = ipts_control_request_flush(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to request flush: %d\n", ret); -+ return ret; -+ } -+ } -+ -+ doorbell = ipts_receiver_current_doorbell(ipts); -+ -+ /* -+ * After filling up one of the data buffers, IPTS will increment -+ * the doorbell. The value of the doorbell stands for the *next* -+ * buffer that IPTS is going to fill. -+ */ -+ while (lastdb != doorbell) { -+ buffer = lastdb % IPTS_BUFFERS; -+ -+ ret = ipts_hid_input_data(ipts, buffer); -+ if (ret) -+ dev_err(ipts->dev, "Failed to process buffer: %d\n", ret); -+ -+ ret = ipts_control_refill_buffer(ipts, buffer); -+ if (ret) -+ dev_err(ipts->dev, "Failed to send feedback: %d\n", ret); -+ -+ last = ktime_get_seconds(); -+ lastdb++; -+ } -+ -+ if (ipts_thread_should_stop(thread)) -+ break; -+ -+ ipts_receiver_backoff(last, 5); -+ } -+ -+ ret = ipts_control_wait_data(ipts, true); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to wait for data: %d\n", ret); -+ -+ if (ret != -EAGAIN) -+ return ret; -+ else -+ return 0; -+ } -+ -+ ret = ipts_control_wait_flush(ipts); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to wait for flush: %d\n", ret); -+ -+ if (ret != -EAGAIN) -+ return ret; -+ else -+ return 0; -+ } -+ -+ return 0; -+} -+ -+int ipts_receiver_start(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (ipts->mode == IPTS_MODE_EVENT) { -+ ret = ipts_thread_start(&ipts->receiver_loop, ipts_receiver_event_loop, ipts, -+ "ipts_event"); -+ } else if (ipts->mode == IPTS_MODE_DOORBELL) { -+ ret = ipts_thread_start(&ipts->receiver_loop, ipts_receiver_doorbell_loop, ipts, -+ "ipts_doorbell"); -+ } else { -+ ret = -EINVAL; -+ } -+ -+ if (ret) { -+ dev_err(ipts->dev, "Failed to start receiver loop: %d\n", ret); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+int ipts_receiver_stop(struct ipts_context *ipts) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ ret = ipts_thread_stop(&ipts->receiver_loop); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to stop receiver loop: %d\n", ret); -+ return ret; -+ } -+ -+ return 0; -+} -diff --git a/drivers/hid/ipts/receiver.h b/drivers/hid/ipts/receiver.h -new file mode 100644 -index 000000000000..96070f34fbca ---- /dev/null -+++ b/drivers/hid/ipts/receiver.h -@@ -0,0 +1,17 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_RECEIVER_H -+#define IPTS_RECEIVER_H -+ -+#include "context.h" -+ -+int ipts_receiver_start(struct ipts_context *ipts); -+int ipts_receiver_stop(struct ipts_context *ipts); -+ -+#endif /* IPTS_RECEIVER_H */ -diff --git a/drivers/hid/ipts/resources.c b/drivers/hid/ipts/resources.c -new file mode 100644 -index 000000000000..80ba5885bb55 ---- /dev/null -+++ b/drivers/hid/ipts/resources.c -@@ -0,0 +1,108 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+ -+#include "resources.h" -+#include "spec-device.h" -+ -+static int ipts_resources_alloc_buffer(struct ipts_buffer *buffer, struct device *dev, size_t size) -+{ -+ if (!buffer) -+ return -EFAULT; -+ -+ if (buffer->address) -+ return 0; -+ -+ buffer->address = dma_alloc_coherent(dev, size, &buffer->dma_address, GFP_KERNEL); -+ -+ if (!buffer->address) -+ return -ENOMEM; -+ -+ buffer->size = size; -+ buffer->device = dev; -+ -+ return 0; -+} -+ -+static void ipts_resources_free_buffer(struct ipts_buffer *buffer) -+{ -+ if (!buffer->address) -+ return; -+ -+ dma_free_coherent(buffer->device, buffer->size, buffer->address, buffer->dma_address); -+ -+ buffer->address = NULL; -+ buffer->size = 0; -+ -+ buffer->dma_address = 0; -+ buffer->device = NULL; -+} -+ -+int ipts_resources_init(struct ipts_resources *res, struct device *dev, size_t ds, size_t fs) -+{ -+ int ret = 0; -+ -+ if (!res) -+ return -EFAULT; -+ -+ for (int i = 0; i < IPTS_BUFFERS; i++) { -+ ret = ipts_resources_alloc_buffer(&res->data[i], dev, ds); -+ if (ret) -+ goto err; -+ } -+ -+ for (int i = 0; i < IPTS_BUFFERS; i++) { -+ ret = ipts_resources_alloc_buffer(&res->feedback[i], dev, fs); -+ if (ret) -+ goto err; -+ } -+ -+ ret = ipts_resources_alloc_buffer(&res->doorbell, dev, sizeof(u32)); -+ if (ret) -+ goto err; -+ -+ ret = ipts_resources_alloc_buffer(&res->workqueue, dev, sizeof(u32)); -+ if (ret) -+ goto err; -+ -+ ret = ipts_resources_alloc_buffer(&res->hid2me, dev, fs); -+ if (ret) -+ goto err; -+ -+ ret = ipts_resources_alloc_buffer(&res->descriptor, dev, ds + 8); -+ if (ret) -+ goto err; -+ -+ return 0; -+ -+err: -+ -+ ipts_resources_free(res); -+ return ret; -+} -+ -+int ipts_resources_free(struct ipts_resources *res) -+{ -+ if (!res) -+ return -EFAULT; -+ -+ for (int i = 0; i < IPTS_BUFFERS; i++) -+ ipts_resources_free_buffer(&res->data[i]); -+ -+ for (int i = 0; i < IPTS_BUFFERS; i++) -+ ipts_resources_free_buffer(&res->feedback[i]); -+ -+ ipts_resources_free_buffer(&res->doorbell); -+ ipts_resources_free_buffer(&res->workqueue); -+ ipts_resources_free_buffer(&res->hid2me); -+ ipts_resources_free_buffer(&res->descriptor); -+ -+ return 0; -+} -diff --git a/drivers/hid/ipts/resources.h b/drivers/hid/ipts/resources.h -new file mode 100644 -index 000000000000..6cbb24a8a054 ---- /dev/null -+++ b/drivers/hid/ipts/resources.h -@@ -0,0 +1,39 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_RESOURCES_H -+#define IPTS_RESOURCES_H -+ -+#include -+#include -+ -+#include "spec-device.h" -+ -+struct ipts_buffer { -+ u8 *address; -+ size_t size; -+ -+ dma_addr_t dma_address; -+ struct device *device; -+}; -+ -+struct ipts_resources { -+ struct ipts_buffer data[IPTS_BUFFERS]; -+ struct ipts_buffer feedback[IPTS_BUFFERS]; -+ -+ struct ipts_buffer doorbell; -+ struct ipts_buffer workqueue; -+ struct ipts_buffer hid2me; -+ -+ struct ipts_buffer descriptor; -+}; -+ -+int ipts_resources_init(struct ipts_resources *res, struct device *dev, size_t ds, size_t fs); -+int ipts_resources_free(struct ipts_resources *res); -+ -+#endif /* IPTS_RESOURCES_H */ -diff --git a/drivers/hid/ipts/spec-data.h b/drivers/hid/ipts/spec-data.h -new file mode 100644 -index 000000000000..e8dd98895a7e ---- /dev/null -+++ b/drivers/hid/ipts/spec-data.h -@@ -0,0 +1,100 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_SPEC_DATA_H -+#define IPTS_SPEC_DATA_H -+ -+#include -+#include -+ -+/** -+ * enum ipts_feedback_cmd_type - Commands that can be executed on the sensor through feedback. -+ */ -+enum ipts_feedback_cmd_type { -+ IPTS_FEEDBACK_CMD_TYPE_NONE = 0, -+ IPTS_FEEDBACK_CMD_TYPE_SOFT_RESET = 1, -+ IPTS_FEEDBACK_CMD_TYPE_GOTO_ARMED = 2, -+ IPTS_FEEDBACK_CMD_TYPE_GOTO_SENSING = 3, -+ IPTS_FEEDBACK_CMD_TYPE_GOTO_SLEEP = 4, -+ IPTS_FEEDBACK_CMD_TYPE_GOTO_DOZE = 5, -+ IPTS_FEEDBACK_CMD_TYPE_HARD_RESET = 6, -+}; -+ -+/** -+ * enum ipts_feedback_data_type - Defines what data a feedback buffer contains. -+ * @IPTS_FEEDBACK_DATA_TYPE_VENDOR: The buffer contains vendor specific feedback. -+ * @IPTS_FEEDBACK_DATA_TYPE_SET_FEATURES: The buffer contains a HID set features report. -+ * @IPTS_FEEDBACK_DATA_TYPE_GET_FEATURES: The buffer contains a HID get features report. -+ * @IPTS_FEEDBACK_DATA_TYPE_OUTPUT_REPORT: The buffer contains a HID output report. -+ * @IPTS_FEEDBACK_DATA_TYPE_STORE_DATA: The buffer contains calibration data for the sensor. -+ */ -+enum ipts_feedback_data_type { -+ IPTS_FEEDBACK_DATA_TYPE_VENDOR = 0, -+ IPTS_FEEDBACK_DATA_TYPE_SET_FEATURES = 1, -+ IPTS_FEEDBACK_DATA_TYPE_GET_FEATURES = 2, -+ IPTS_FEEDBACK_DATA_TYPE_OUTPUT_REPORT = 3, -+ IPTS_FEEDBACK_DATA_TYPE_STORE_DATA = 4, -+}; -+ -+/** -+ * struct ipts_feedback_header - Header that is prefixed to the data in a feedback buffer. -+ * @cmd_type: A command that should be executed on the sensor. -+ * @size: The size of the payload to be written. -+ * @buffer: The ID of the buffer that contains this feedback data. -+ * @protocol: The protocol version of the EDS. -+ * @data_type: The type of data that the buffer contains. -+ * @spi_offset: The offset at which to write the payload data to the sensor. -+ * @payload: Payload for the feedback command, or 0 if no payload is sent. -+ */ -+struct ipts_feedback_header { -+ enum ipts_feedback_cmd_type cmd_type; -+ u32 size; -+ u32 buffer; -+ u32 protocol; -+ enum ipts_feedback_data_type data_type; -+ u32 spi_offset; -+ u8 reserved[40]; -+ u8 payload[]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_feedback_header) == 64); -+ -+/** -+ * enum ipts_data_type - Defines what type of data a buffer contains. -+ * @IPTS_DATA_TYPE_FRAME: Raw data frame. -+ * @IPTS_DATA_TYPE_ERROR: Error data. -+ * @IPTS_DATA_TYPE_VENDOR: Vendor specific data. -+ * @IPTS_DATA_TYPE_HID: A HID report. -+ * @IPTS_DATA_TYPE_GET_FEATURES: The response to a GET_FEATURES HID2ME command. -+ */ -+enum ipts_data_type { -+ IPTS_DATA_TYPE_FRAME = 0x00, -+ IPTS_DATA_TYPE_ERROR = 0x01, -+ IPTS_DATA_TYPE_VENDOR = 0x02, -+ IPTS_DATA_TYPE_HID = 0x03, -+ IPTS_DATA_TYPE_GET_FEATURES = 0x04, -+ IPTS_DATA_TYPE_DESCRIPTOR = 0x05, -+}; -+ -+/** -+ * struct ipts_data_header - Header that is prefixed to the data in a data buffer. -+ * @type: What data the buffer contains. -+ * @size: How much data the buffer contains. -+ * @buffer: Which buffer the data is in. -+ */ -+struct ipts_data_header { -+ enum ipts_data_type type; -+ u32 size; -+ u32 buffer; -+ u8 reserved[52]; -+ u8 data[]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_data_header) == 64); -+ -+#endif /* IPTS_SPEC_DATA_H */ -diff --git a/drivers/hid/ipts/spec-device.h b/drivers/hid/ipts/spec-device.h -new file mode 100644 -index 000000000000..93f673d981f7 ---- /dev/null -+++ b/drivers/hid/ipts/spec-device.h -@@ -0,0 +1,285 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_SPEC_DEVICE_H -+#define IPTS_SPEC_DEVICE_H -+ -+#include -+#include -+ -+/* -+ * The amount of buffers that IPTS can use for data transfer. -+ */ -+#define IPTS_BUFFERS 16 -+ -+/* -+ * The buffer ID that is used for HID2ME feedback -+ */ -+#define IPTS_HID2ME_BUFFER IPTS_BUFFERS -+ -+/** -+ * enum ipts_command - Commands that can be sent to the IPTS hardware. -+ * @IPTS_CMD_GET_DEVICE_INFO: Retrieves vendor information from the device. -+ * @IPTS_CMD_SET_MODE: Changes the mode that the device will operate in. -+ * @IPTS_CMD_SET_MEM_WINDOW: Configures memory buffers for passing data between device and driver. -+ * @IPTS_CMD_QUIESCE_IO: Stops the data flow from the device to the driver. -+ * @IPTS_CMD_READY_FOR_DATA: Informs the device that the driver is ready to receive data. -+ * @IPTS_CMD_FEEDBACK: Informs the device that a buffer was processed and can be refilled. -+ * @IPTS_CMD_CLEAR_MEM_WINDOW: Stops the data flow and clears the buffer addresses on the device. -+ * @IPTS_CMD_RESET_SENSOR: Resets the sensor to its default state. -+ * @IPTS_CMD_GET_DESCRIPTOR: Retrieves the HID descriptor of the device. -+ */ -+enum ipts_command_code { -+ IPTS_CMD_GET_DEVICE_INFO = 0x01, -+ IPTS_CMD_SET_MODE = 0x02, -+ IPTS_CMD_SET_MEM_WINDOW = 0x03, -+ IPTS_CMD_QUIESCE_IO = 0x04, -+ IPTS_CMD_READY_FOR_DATA = 0x05, -+ IPTS_CMD_FEEDBACK = 0x06, -+ IPTS_CMD_CLEAR_MEM_WINDOW = 0x07, -+ IPTS_CMD_RESET_SENSOR = 0x0B, -+ IPTS_CMD_GET_DESCRIPTOR = 0x0F, -+}; -+ -+/** -+ * enum ipts_status - Possible status codes returned by the IPTS device. -+ * @IPTS_STATUS_SUCCESS: Operation completed successfully. -+ * @IPTS_STATUS_INVALID_PARAMS: Command contained an invalid payload. -+ * @IPTS_STATUS_ACCESS_DENIED: ME could not validate a buffer address. -+ * @IPTS_STATUS_CMD_SIZE_ERROR: Command contains an invalid payload. -+ * @IPTS_STATUS_NOT_READY: Buffer addresses have not been set. -+ * @IPTS_STATUS_REQUEST_OUTSTANDING: There is an outstanding command of the same type. -+ * @IPTS_STATUS_NO_SENSOR_FOUND: No sensor could be found. -+ * @IPTS_STATUS_OUT_OF_MEMORY: Not enough free memory for requested operation. -+ * @IPTS_STATUS_INTERNAL_ERROR: An unexpected error occurred. -+ * @IPTS_STATUS_SENSOR_DISABLED: The sensor has been disabled and must be reinitialized. -+ * @IPTS_STATUS_COMPAT_CHECK_FAIL: Compatibility revision check between sensor and ME failed. -+ * The host can ignore this error and attempt to continue. -+ * @IPTS_STATUS_SENSOR_EXPECTED_RESET: The sensor went through a reset initiated by the driver. -+ * @IPTS_STATUS_SENSOR_UNEXPECTED_RESET: The sensor went through an unexpected reset. -+ * @IPTS_STATUS_RESET_FAILED: Requested sensor reset failed to complete. -+ * @IPTS_STATUS_TIMEOUT: The operation timed out. -+ * @IPTS_STATUS_TEST_MODE_FAIL: Test mode pattern did not match expected values. -+ * @IPTS_STATUS_SENSOR_FAIL_FATAL: The sensor reported an error during reset sequence. -+ * Further progress is not possible. -+ * @IPTS_STATUS_SENSOR_FAIL_NONFATAL: The sensor reported an error during reset sequence. -+ * The driver can attempt to continue. -+ * @IPTS_STATUS_INVALID_DEVICE_CAPS: The device reported invalid capabilities. -+ * @IPTS_STATUS_QUIESCE_IO_IN_PROGRESS: Command cannot be completed until Quiesce IO is done. -+ */ -+enum ipts_status { -+ IPTS_STATUS_SUCCESS = 0x00, -+ IPTS_STATUS_INVALID_PARAMS = 0x01, -+ IPTS_STATUS_ACCESS_DENIED = 0x02, -+ IPTS_STATUS_CMD_SIZE_ERROR = 0x03, -+ IPTS_STATUS_NOT_READY = 0x04, -+ IPTS_STATUS_REQUEST_OUTSTANDING = 0x05, -+ IPTS_STATUS_NO_SENSOR_FOUND = 0x06, -+ IPTS_STATUS_OUT_OF_MEMORY = 0x07, -+ IPTS_STATUS_INTERNAL_ERROR = 0x08, -+ IPTS_STATUS_SENSOR_DISABLED = 0x09, -+ IPTS_STATUS_COMPAT_CHECK_FAIL = 0x0A, -+ IPTS_STATUS_SENSOR_EXPECTED_RESET = 0x0B, -+ IPTS_STATUS_SENSOR_UNEXPECTED_RESET = 0x0C, -+ IPTS_STATUS_RESET_FAILED = 0x0D, -+ IPTS_STATUS_TIMEOUT = 0x0E, -+ IPTS_STATUS_TEST_MODE_FAIL = 0x0F, -+ IPTS_STATUS_SENSOR_FAIL_FATAL = 0x10, -+ IPTS_STATUS_SENSOR_FAIL_NONFATAL = 0x11, -+ IPTS_STATUS_INVALID_DEVICE_CAPS = 0x12, -+ IPTS_STATUS_QUIESCE_IO_IN_PROGRESS = 0x13, -+}; -+ -+/** -+ * struct ipts_command - Message that is sent to the device for calling a command. -+ * @cmd: The command that will be called. -+ * @payload: Payload containing parameters for the called command. -+ */ -+struct ipts_command { -+ enum ipts_command_code cmd; -+ u8 payload[320]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_command) == 324); -+ -+/** -+ * enum ipts_mode - Configures what data the device produces and how its sent. -+ * @IPTS_MODE_EVENT: The device will send an event once a buffer was filled. -+ * Older devices will return singletouch data in this mode. -+ * @IPTS_MODE_DOORBELL: The device will notify the driver by incrementing the doorbell value. -+ * Older devices will return multitouch data in this mode. -+ */ -+enum ipts_mode { -+ IPTS_MODE_EVENT = 0x00, -+ IPTS_MODE_DOORBELL = 0x01, -+}; -+ -+/** -+ * struct ipts_set_mode - Payload for the SET_MODE command. -+ * @mode: Changes the mode that IPTS will operate in. -+ */ -+struct ipts_set_mode { -+ enum ipts_mode mode; -+ u8 reserved[12]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_set_mode) == 16); -+ -+#define IPTS_WORKQUEUE_SIZE 8192 -+#define IPTS_WORKQUEUE_ITEM_SIZE 16 -+ -+/** -+ * struct ipts_mem_window - Payload for the SET_MEM_WINDOW command. -+ * @data_addr_lower: Lower 32 bits of the data buffer addresses. -+ * @data_addr_upper: Upper 32 bits of the data buffer addresses. -+ * @workqueue_addr_lower: Lower 32 bits of the workqueue buffer address. -+ * @workqueue_addr_upper: Upper 32 bits of the workqueue buffer address. -+ * @doorbell_addr_lower: Lower 32 bits of the doorbell buffer address. -+ * @doorbell_addr_upper: Upper 32 bits of the doorbell buffer address. -+ * @feedbackaddr_lower: Lower 32 bits of the feedback buffer addresses. -+ * @feedbackaddr_upper: Upper 32 bits of the feedback buffer addresses. -+ * @hid2me_addr_lower: Lower 32 bits of the hid2me buffer address. -+ * @hid2me_addr_upper: Upper 32 bits of the hid2me buffer address. -+ * @hid2me_size: Size of the hid2me feedback buffer. -+ * @workqueue_item_size: Magic value. Must be 16. -+ * @workqueue_size: Magic value. Must be 8192. -+ * -+ * The workqueue related items in this struct are required for using -+ * GuC submission with binary processing firmware. Since this driver does -+ * not use GuC submission and instead exports raw data to userspace, these -+ * items are not actually used, but they need to be allocated and passed -+ * to the device, otherwise initialization will fail. -+ */ -+struct ipts_mem_window { -+ u32 data_addr_lower[IPTS_BUFFERS]; -+ u32 data_addr_upper[IPTS_BUFFERS]; -+ u32 workqueue_addr_lower; -+ u32 workqueue_addr_upper; -+ u32 doorbell_addr_lower; -+ u32 doorbell_addr_upper; -+ u32 feedback_addr_lower[IPTS_BUFFERS]; -+ u32 feedback_addr_upper[IPTS_BUFFERS]; -+ u32 hid2me_addr_lower; -+ u32 hid2me_addr_upper; -+ u32 hid2me_size; -+ u8 reserved1; -+ u8 workqueue_item_size; -+ u16 workqueue_size; -+ u8 reserved[32]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_mem_window) == 320); -+ -+/** -+ * struct ipts_quiesce_io - Payload for the QUIESCE_IO command. -+ */ -+struct ipts_quiesce_io { -+ u8 reserved[12]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_quiesce_io) == 12); -+ -+/** -+ * struct ipts_feedback - Payload for the FEEDBACK command. -+ * @buffer: The buffer that the device should refill. -+ */ -+struct ipts_feedback { -+ u32 buffer; -+ u8 reserved[12]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_feedback) == 16); -+ -+/** -+ * enum ipts_reset_type - Possible ways of resetting the device. -+ * @IPTS_RESET_TYPE_HARD: Perform hardware reset using GPIO pin. -+ * @IPTS_RESET_TYPE_SOFT: Perform software reset using SPI command. -+ */ -+enum ipts_reset_type { -+ IPTS_RESET_TYPE_HARD = 0x00, -+ IPTS_RESET_TYPE_SOFT = 0x01, -+}; -+ -+/** -+ * struct ipts_reset - Payload for the RESET_SENSOR command. -+ * @type: How the device should get reset. -+ */ -+struct ipts_reset_sensor { -+ enum ipts_reset_type type; -+ u8 reserved[4]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_reset_sensor) == 8); -+ -+/** -+ * struct ipts_get_descriptor - Payload for the GET_DESCRIPTOR command. -+ * @addr_lower: The lower 32 bits of the descriptor buffer address. -+ * @addr_upper: The upper 32 bits of the descriptor buffer address. -+ * @magic: A magic value. Must be 8. -+ */ -+struct ipts_get_descriptor { -+ u32 addr_lower; -+ u32 addr_upper; -+ u32 magic; -+ u8 reserved[12]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_get_descriptor) == 24); -+ -+/* -+ * The type of a response is indicated by a -+ * command code, with the most significant bit flipped to 1. -+ */ -+#define IPTS_RSP_BIT BIT(31) -+ -+/** -+ * struct ipts_response - Data returned from the device in response to a command. -+ * @cmd: The command that this response answers (IPTS_RSP_BIT will be 1). -+ * @status: The return code of the command. -+ * @payload: The data that was produced by the command. -+ */ -+struct ipts_response { -+ enum ipts_command_code cmd; -+ enum ipts_status status; -+ u8 payload[80]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_response) == 88); -+ -+/** -+ * struct ipts_device_info - Vendor information of the IPTS device. -+ * @vendor: Vendor ID of this device. -+ * @product: Product ID of this device. -+ * @hw_version: Hardware revision of this device. -+ * @fw_version: Firmware revision of this device. -+ * @data_size: Requested size for a data buffer. -+ * @feedback_size: Requested size for a feedback buffer. -+ * @mode: Mode that the device currently operates in. -+ * @max_contacts: Maximum amount of concurrent touches the sensor can process. -+ */ -+struct ipts_device_info { -+ u16 vendor; -+ u16 product; -+ u32 hw_version; -+ u32 fw_version; -+ u32 data_size; -+ u32 feedback_size; -+ enum ipts_mode mode; -+ u8 max_contacts; -+ u8 reserved1[3]; -+ u8 sensor_min_eds; -+ u8 sensor_maj_eds; -+ u8 me_min_eds; -+ u8 me_maj_eds; -+ u8 intf_eds; -+ u8 reserved2[11]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_device_info) == 44); -+ -+#endif /* IPTS_SPEC_DEVICE_H */ -diff --git a/drivers/hid/ipts/spec-hid.h b/drivers/hid/ipts/spec-hid.h -new file mode 100644 -index 000000000000..ea70f29ff00c ---- /dev/null -+++ b/drivers/hid/ipts/spec-hid.h -@@ -0,0 +1,35 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2020-2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_SPEC_HID_H -+#define IPTS_SPEC_HID_H -+ -+#include -+#include -+ -+/* -+ * Made-up type for passing raw IPTS data in a HID report. -+ */ -+#define IPTS_HID_FRAME_TYPE_RAW 0xEE -+ -+/** -+ * struct ipts_hid_frame - Header that is prefixed to raw IPTS data wrapped in a HID report. -+ * @size: Size of the data inside the report, including this header. -+ * @type: What type of data does this report contain. -+ */ -+struct ipts_hid_header { -+ u32 size; -+ u8 reserved1; -+ u8 type; -+ u8 reserved2; -+ u8 data[]; -+} __packed; -+ -+static_assert(sizeof(struct ipts_hid_header) == 7); -+ -+#endif /* IPTS_SPEC_HID_H */ -diff --git a/drivers/hid/ipts/thread.c b/drivers/hid/ipts/thread.c -new file mode 100644 -index 000000000000..8b46f775c107 ---- /dev/null -+++ b/drivers/hid/ipts/thread.c -@@ -0,0 +1,85 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+#include -+#include -+ -+#include "thread.h" -+ -+bool ipts_thread_should_stop(struct ipts_thread *thread) -+{ -+ if (!thread) -+ return false; -+ -+ return READ_ONCE(thread->should_stop); -+} -+ -+static int ipts_thread_runner(void *data) -+{ -+ int ret = 0; -+ struct ipts_thread *thread = data; -+ -+ if (!thread) -+ return -EFAULT; -+ -+ if (!thread->threadfn) -+ return -EFAULT; -+ -+ ret = thread->threadfn(thread); -+ complete_all(&thread->done); -+ -+ return ret; -+} -+ -+int ipts_thread_start(struct ipts_thread *thread, int (*threadfn)(struct ipts_thread *thread), -+ void *data, const char *name) -+{ -+ if (!thread) -+ return -EFAULT; -+ -+ if (!threadfn) -+ return -EFAULT; -+ -+ init_completion(&thread->done); -+ -+ thread->data = data; -+ thread->should_stop = false; -+ thread->threadfn = threadfn; -+ -+ thread->thread = kthread_run(ipts_thread_runner, thread, name); -+ return PTR_ERR_OR_ZERO(thread->thread); -+} -+ -+int ipts_thread_stop(struct ipts_thread *thread) -+{ -+ int ret = 0; -+ -+ if (!thread) -+ return -EFAULT; -+ -+ if (!thread->thread) -+ return 0; -+ -+ WRITE_ONCE(thread->should_stop, true); -+ -+ /* -+ * Make sure that the write has gone through before waiting. -+ */ -+ wmb(); -+ -+ wait_for_completion(&thread->done); -+ ret = kthread_stop(thread->thread); -+ -+ thread->thread = NULL; -+ thread->data = NULL; -+ thread->threadfn = NULL; -+ -+ return ret; -+} -diff --git a/drivers/hid/ipts/thread.h b/drivers/hid/ipts/thread.h -new file mode 100644 -index 000000000000..a314843599fc ---- /dev/null -+++ b/drivers/hid/ipts/thread.h -@@ -0,0 +1,60 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+/* -+ * Copyright (c) 2016 Intel Corporation -+ * Copyright (c) 2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#ifndef IPTS_THREAD_H -+#define IPTS_THREAD_H -+ -+#include -+#include -+#include -+ -+/* -+ * This wrapper over kthread is necessary, because calling kthread_stop makes it impossible -+ * to issue MEI commands from that thread while it shuts itself down. By using a custom -+ * boolean variable and a completion object, we can call kthread_stop only when the thread -+ * already finished all of its work and has returned. -+ */ -+struct ipts_thread { -+ struct task_struct *thread; -+ -+ bool should_stop; -+ struct completion done; -+ -+ void *data; -+ int (*threadfn)(struct ipts_thread *thread); -+}; -+ -+/* -+ * ipts_thread_should_stop() - Returns true if the thread is asked to terminate. -+ * @thread: The current thread. -+ * -+ * Returns: true if the thread should stop, false if not. -+ */ -+bool ipts_thread_should_stop(struct ipts_thread *thread); -+ -+/* -+ * ipts_thread_start() - Starts an IPTS thread. -+ * @thread: The thread to initialize and start. -+ * @threadfn: The function to execute. -+ * @data: An argument that will be passed to threadfn. -+ * @name: The name of the new thread. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_thread_start(struct ipts_thread *thread, int (*threadfn)(struct ipts_thread *thread), -+ void *data, const char name[]); -+ -+/* -+ * ipts_thread_stop() - Asks the thread to terminate and waits until it has finished. -+ * @thread: The thread that should stop. -+ * -+ * Returns: The return value of the thread function. -+ */ -+int ipts_thread_stop(struct ipts_thread *thread); -+ -+#endif /* IPTS_THREAD_H */ --- -2.42.0 - -From e8dee0b4dfcad77d13d78130034679509bc08e78 Mon Sep 17 00:00:00 2001 -From: Dorian Stoll -Date: Fri, 28 Apr 2023 15:41:12 +0200 -Subject: [PATCH] Update IPTS from module repo - -Changes: - * Fix redefinition error on AOSP clang - * Increase the polling frequency to reduce latency - * Don't allocate a new buffer for every HID report - * Always use the generic HID driver instead of forcing hid-multitouch - -Based on https://github.com/linux-surface/intel-precise-touch/commit/a2b675d72dbde80ebe36a5b6ceaebd596c030314 - -Signed-off-by: Dorian Stoll -Patchset: ipts ---- - drivers/hid/ipts/hid.c | 15 +++++---------- - drivers/hid/ipts/receiver.c | 2 +- - drivers/hid/ipts/resources.c | 35 +++++++++++++++++++++++++++++++---- - drivers/hid/ipts/resources.h | 3 +++ - 4 files changed, 40 insertions(+), 15 deletions(-) - -diff --git a/drivers/hid/ipts/hid.c b/drivers/hid/ipts/hid.c -index 6782394e8dde..a2471219615b 100644 ---- a/drivers/hid/ipts/hid.c -+++ b/drivers/hid/ipts/hid.c -@@ -237,7 +237,6 @@ static struct hid_ll_driver ipts_hid_driver = { - - int ipts_hid_input_data(struct ipts_context *ipts, u32 buffer) - { -- int ret = 0; - u8 *temp = NULL; - struct ipts_hid_header *frame = NULL; - struct ipts_data_header *header = NULL; -@@ -250,6 +249,9 @@ int ipts_hid_input_data(struct ipts_context *ipts, u32 buffer) - - header = (struct ipts_data_header *)ipts->resources.data[buffer].address; - -+ temp = ipts->resources.report.address; -+ memset(temp, 0, ipts->resources.report.size); -+ - if (!header) - return -EFAULT; - -@@ -273,10 +275,6 @@ int ipts_hid_input_data(struct ipts_context *ipts, u32 buffer) - if (header->size + 3 + sizeof(struct ipts_hid_header) > IPTS_HID_REPORT_DATA_SIZE) - return -ERANGE; - -- temp = kzalloc(IPTS_HID_REPORT_DATA_SIZE, GFP_KERNEL); -- if (!temp) -- return -ENOMEM; -- - /* - * Synthesize a HID report matching the devices that natively send HID reports - */ -@@ -288,10 +286,7 @@ int ipts_hid_input_data(struct ipts_context *ipts, u32 buffer) - - memcpy(frame->data, header->data, header->size); - -- ret = hid_input_report(ipts->hid, HID_INPUT_REPORT, temp, IPTS_HID_REPORT_DATA_SIZE, 1); -- kfree(temp); -- -- return ret; -+ return hid_input_report(ipts->hid, HID_INPUT_REPORT, temp, IPTS_HID_REPORT_DATA_SIZE, 1); - } - - int ipts_hid_init(struct ipts_context *ipts, struct ipts_device_info info) -@@ -318,7 +313,7 @@ int ipts_hid_init(struct ipts_context *ipts, struct ipts_device_info info) - - ipts->hid->vendor = info.vendor; - ipts->hid->product = info.product; -- ipts->hid->group = HID_GROUP_MULTITOUCH; -+ ipts->hid->group = HID_GROUP_GENERIC; - - snprintf(ipts->hid->name, sizeof(ipts->hid->name), "IPTS %04X:%04X", info.vendor, - info.product); -diff --git a/drivers/hid/ipts/receiver.c b/drivers/hid/ipts/receiver.c -index 77234f9e0e17..f56e9ed32d57 100644 ---- a/drivers/hid/ipts/receiver.c -+++ b/drivers/hid/ipts/receiver.c -@@ -42,7 +42,7 @@ static void ipts_receiver_backoff(time64_t last, u32 n) - * n seconds, sleep longer to avoid wasting CPU cycles. - */ - if (last + n > ktime_get_seconds()) -- msleep(20); -+ usleep_range(1 * USEC_PER_MSEC, 5 * USEC_PER_MSEC); - else - msleep(200); - } -diff --git a/drivers/hid/ipts/resources.c b/drivers/hid/ipts/resources.c -index 80ba5885bb55..5e924d58c488 100644 ---- a/drivers/hid/ipts/resources.c -+++ b/drivers/hid/ipts/resources.c -@@ -9,6 +9,7 @@ - #include - #include - -+#include "desc.h" - #include "resources.h" - #include "spec-device.h" - -@@ -49,16 +50,22 @@ int ipts_resources_init(struct ipts_resources *res, struct device *dev, size_t d - { - int ret = 0; - -+ /* -+ * Some compilers (AOSP clang) complain about a redefined -+ * variable when this is declared inside of the for loop. -+ */ -+ int i = 0; -+ - if (!res) - return -EFAULT; - -- for (int i = 0; i < IPTS_BUFFERS; i++) { -+ for (i = 0; i < IPTS_BUFFERS; i++) { - ret = ipts_resources_alloc_buffer(&res->data[i], dev, ds); - if (ret) - goto err; - } - -- for (int i = 0; i < IPTS_BUFFERS; i++) { -+ for (i = 0; i < IPTS_BUFFERS; i++) { - ret = ipts_resources_alloc_buffer(&res->feedback[i], dev, fs); - if (ret) - goto err; -@@ -80,6 +87,16 @@ int ipts_resources_init(struct ipts_resources *res, struct device *dev, size_t d - if (ret) - goto err; - -+ if (!res->report.address) { -+ res->report.size = IPTS_HID_REPORT_DATA_SIZE; -+ res->report.address = kzalloc(res->report.size, GFP_KERNEL); -+ -+ if (!res->report.address) { -+ ret = -ENOMEM; -+ goto err; -+ } -+ } -+ - return 0; - - err: -@@ -90,13 +107,19 @@ int ipts_resources_init(struct ipts_resources *res, struct device *dev, size_t d - - int ipts_resources_free(struct ipts_resources *res) - { -+ /* -+ * Some compilers (AOSP clang) complain about a redefined -+ * variable when this is declared inside of the for loop. -+ */ -+ int i = 0; -+ - if (!res) - return -EFAULT; - -- for (int i = 0; i < IPTS_BUFFERS; i++) -+ for (i = 0; i < IPTS_BUFFERS; i++) - ipts_resources_free_buffer(&res->data[i]); - -- for (int i = 0; i < IPTS_BUFFERS; i++) -+ for (i = 0; i < IPTS_BUFFERS; i++) - ipts_resources_free_buffer(&res->feedback[i]); - - ipts_resources_free_buffer(&res->doorbell); -@@ -104,5 +127,9 @@ int ipts_resources_free(struct ipts_resources *res) - ipts_resources_free_buffer(&res->hid2me); - ipts_resources_free_buffer(&res->descriptor); - -+ kfree(res->report.address); -+ res->report.address = NULL; -+ res->report.size = 0; -+ - return 0; - } -diff --git a/drivers/hid/ipts/resources.h b/drivers/hid/ipts/resources.h -index 6cbb24a8a054..e0c400f420b9 100644 ---- a/drivers/hid/ipts/resources.h -+++ b/drivers/hid/ipts/resources.h -@@ -31,6 +31,9 @@ struct ipts_resources { - struct ipts_buffer hid2me; - - struct ipts_buffer descriptor; -+ -+ // Buffer for synthesizing HID reports -+ struct ipts_buffer report; - }; - - int ipts_resources_init(struct ipts_resources *res, struct device *dev, size_t ds, size_t fs); --- -2.42.0 - -From 97f8ddfb5a0c033afb894f0f77edb6c3071bec5c Mon Sep 17 00:00:00 2001 -From: Dorian Stoll -Date: Mon, 17 Jul 2023 18:10:43 +0200 -Subject: [PATCH] Update IPTS from module repo - -Changes: -* Remove usages of C11 for compatibility with older (Android) kernels -* Remove sensor reset during shutdown -* Fix compiling resources.c on Android-x86 kernel -* Split out HID behaviour for different EDS versions into different files -* Fix kernel-doc comments -* Add missing docs for members of the device info struct -* Drop Intel copyright -* Rename doorbell mode to poll mode -* Disable the HID interface when the hardware is shutting down. - -Based on https://github.com/linux-surface/intel-precise-touch/commit/56765da3f87d87c5e5cf09e928abe0f579525e5e - -Signed-off-by: Dorian Stoll -Patchset: ipts ---- - drivers/hid/ipts/Makefile | 2 + - drivers/hid/ipts/cmd.c | 1 - - drivers/hid/ipts/cmd.h | 7 +- - drivers/hid/ipts/context.h | 3 +- - drivers/hid/ipts/control.c | 25 ++--- - drivers/hid/ipts/control.h | 25 +++-- - drivers/hid/ipts/desc.h | 1 - - drivers/hid/ipts/eds1.c | 103 ++++++++++++++++++ - drivers/hid/ipts/eds1.h | 35 +++++++ - drivers/hid/ipts/eds2.c | 144 ++++++++++++++++++++++++++ - drivers/hid/ipts/eds2.h | 35 +++++++ - drivers/hid/ipts/hid.c | 184 ++++++--------------------------- - drivers/hid/ipts/hid.h | 4 +- - drivers/hid/ipts/main.c | 1 - - drivers/hid/ipts/mei.c | 1 - - drivers/hid/ipts/mei.h | 7 +- - drivers/hid/ipts/receiver.c | 15 +-- - drivers/hid/ipts/receiver.h | 1 - - drivers/hid/ipts/resources.c | 6 +- - drivers/hid/ipts/resources.h | 1 - - drivers/hid/ipts/spec-device.h | 31 +++--- - drivers/hid/ipts/spec-hid.h | 1 - - drivers/hid/ipts/thread.c | 1 - - drivers/hid/ipts/thread.h | 7 +- - 24 files changed, 413 insertions(+), 228 deletions(-) - create mode 100644 drivers/hid/ipts/eds1.c - create mode 100644 drivers/hid/ipts/eds1.h - create mode 100644 drivers/hid/ipts/eds2.c - create mode 100644 drivers/hid/ipts/eds2.h - -diff --git a/drivers/hid/ipts/Makefile b/drivers/hid/ipts/Makefile -index 0fe655bccdc0..883896f68e6a 100644 ---- a/drivers/hid/ipts/Makefile -+++ b/drivers/hid/ipts/Makefile -@@ -6,6 +6,8 @@ - obj-$(CONFIG_HID_IPTS) += ipts.o - ipts-objs := cmd.o - ipts-objs += control.o -+ipts-objs += eds1.o -+ipts-objs += eds2.o - ipts-objs += hid.o - ipts-objs += main.o - ipts-objs += mei.o -diff --git a/drivers/hid/ipts/cmd.c b/drivers/hid/ipts/cmd.c -index 7fd69271ccd5..63a4934bbc5f 100644 ---- a/drivers/hid/ipts/cmd.c -+++ b/drivers/hid/ipts/cmd.c -@@ -1,6 +1,5 @@ - // SPDX-License-Identifier: GPL-2.0-or-later - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -diff --git a/drivers/hid/ipts/cmd.h b/drivers/hid/ipts/cmd.h -index 924758ffee67..2b4079075b64 100644 ---- a/drivers/hid/ipts/cmd.h -+++ b/drivers/hid/ipts/cmd.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -@@ -19,7 +18,7 @@ - */ - #define IPTS_CMD_DEFAULT_TIMEOUT 1000 - --/* -+/** - * ipts_cmd_recv_timeout() - Receives a response to a command. - * @ipts: The IPTS driver context. - * @code: The type of the command / response. -@@ -33,7 +32,7 @@ - int ipts_cmd_recv_timeout(struct ipts_context *ipts, enum ipts_command_code code, - struct ipts_response *rsp, u64 timeout); - --/* -+/** - * ipts_cmd_recv() - Receives a response to a command. - * @ipts: The IPTS driver context. - * @code: The type of the command / response. -@@ -47,7 +46,7 @@ static inline int ipts_cmd_recv(struct ipts_context *ipts, enum ipts_command_cod - return ipts_cmd_recv_timeout(ipts, code, rsp, IPTS_CMD_DEFAULT_TIMEOUT); - } - --/* -+/** - * ipts_cmd_send() - Executes a command on the device. - * @ipts: The IPTS driver context. - * @code: The type of the command to execute. -diff --git a/drivers/hid/ipts/context.h b/drivers/hid/ipts/context.h -index 3450a95e66ee..ba33259f1f7c 100644 ---- a/drivers/hid/ipts/context.h -+++ b/drivers/hid/ipts/context.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -@@ -41,7 +40,9 @@ struct ipts_context { - struct ipts_buffer feature_report; - struct ipts_buffer descriptor; - -+ bool hid_active; - struct hid_device *hid; -+ - struct ipts_device_info info; - struct ipts_resources resources; - -diff --git a/drivers/hid/ipts/control.c b/drivers/hid/ipts/control.c -index 2f61500b5119..5360842d260b 100644 ---- a/drivers/hid/ipts/control.c -+++ b/drivers/hid/ipts/control.c -@@ -1,6 +1,5 @@ - // SPDX-License-Identifier: GPL-2.0-or-later - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -@@ -88,6 +87,7 @@ static int ipts_control_set_mode(struct ipts_context *ipts, enum ipts_mode mode) - - static int ipts_control_set_mem_window(struct ipts_context *ipts, struct ipts_resources *res) - { -+ int i = 0; - int ret = 0; - struct ipts_mem_window cmd = { 0 }; - struct ipts_response rsp = { 0 }; -@@ -98,7 +98,7 @@ static int ipts_control_set_mem_window(struct ipts_context *ipts, struct ipts_re - if (!res) - return -EFAULT; - -- for (int i = 0; i < IPTS_BUFFERS; i++) { -+ for (i = 0; i < IPTS_BUFFERS; i++) { - cmd.data_addr_lower[i] = lower_32_bits(res->data[i].dma_address); - cmd.data_addr_upper[i] = upper_32_bits(res->data[i].dma_address); - cmd.feedback_addr_lower[i] = lower_32_bits(res->feedback[i].dma_address); -@@ -342,12 +342,6 @@ int ipts_control_hid2me_feedback(struct ipts_context *ipts, enum ipts_feedback_c - return ipts_control_send_feedback(ipts, IPTS_HID2ME_BUFFER); - } - --static inline int ipts_control_reset_sensor(struct ipts_context *ipts) --{ -- return ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_SOFT_RESET, -- IPTS_FEEDBACK_DATA_TYPE_VENDOR, NULL, 0); --} -- - int ipts_control_start(struct ipts_context *ipts) - { - int ret = 0; -@@ -389,9 +383,9 @@ int ipts_control_start(struct ipts_context *ipts) - } - - /* -- * Newer devices can be directly initialized in doorbell mode. -+ * Newer devices can be directly initialized in polling mode. - */ -- ipts->mode = IPTS_MODE_DOORBELL; -+ ipts->mode = IPTS_MODE_POLL; - } - - ret = ipts_control_set_mode(ipts, ipts->mode); -@@ -418,6 +412,8 @@ int ipts_control_start(struct ipts_context *ipts) - return ret; - } - -+ ipts_hid_enable(ipts); -+ - ret = ipts_hid_init(ipts, info); - if (ret) { - dev_err(ipts->dev, "Failed to initialize HID device: %d\n", ret); -@@ -434,6 +430,7 @@ static int _ipts_control_stop(struct ipts_context *ipts) - if (!ipts) - return -EFAULT; - -+ ipts_hid_disable(ipts); - dev_info(ipts->dev, "Stopping IPTS\n"); - - ret = ipts_receiver_stop(ipts); -@@ -442,12 +439,6 @@ static int _ipts_control_stop(struct ipts_context *ipts) - return ret; - } - -- ret = ipts_control_reset_sensor(ipts); -- if (ret) { -- dev_err(ipts->dev, "Failed to reset sensor: %d\n", ret); -- return ret; -- } -- - ret = ipts_resources_free(&ipts->resources); - if (ret) { - dev_err(ipts->dev, "Failed to free resources: %d\n", ret); -@@ -483,7 +474,7 @@ int ipts_control_restart(struct ipts_context *ipts) - return ret; - - /* -- * Give the sensor some time to come back from resetting -+ * Wait a second to give the sensor time to fully shut down. - */ - msleep(1000); - -diff --git a/drivers/hid/ipts/control.h b/drivers/hid/ipts/control.h -index 744bb92d682a..26629c5144ed 100644 ---- a/drivers/hid/ipts/control.h -+++ b/drivers/hid/ipts/control.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -@@ -15,7 +14,7 @@ - #include "spec-data.h" - #include "spec-device.h" - --/* -+/** - * ipts_control_request_flush() - Stop the data flow. - * @ipts: The IPTS driver context. - * -@@ -26,7 +25,7 @@ - */ - int ipts_control_request_flush(struct ipts_context *ipts); - --/* -+/** - * ipts_control_wait_flush() - Wait until data flow has been stopped. - * @ipts: The IPTS driver context. - * -@@ -34,7 +33,7 @@ int ipts_control_request_flush(struct ipts_context *ipts); - */ - int ipts_control_wait_flush(struct ipts_context *ipts); - --/* -+/** - * ipts_control_wait_flush() - Notify the device that the driver can receive new data. - * @ipts: The IPTS driver context. - * -@@ -42,19 +41,19 @@ int ipts_control_wait_flush(struct ipts_context *ipts); - */ - int ipts_control_request_data(struct ipts_context *ipts); - --/* -+/** - * ipts_control_wait_data() - Wait until new data is available. - * @ipts: The IPTS driver context. - * @block: Whether to block execution until data is available. - * -- * In doorbell mode, this function will never return while the data flow is active. Instead, -- * the doorbell will be incremented when new data is available. -+ * In poll mode, this function will never return while the data flow is active. Instead, -+ * the poll will be incremented when new data is available. - * - * Returns: 0 on success, <0 on error, -EAGAIN if no data is available. - */ - int ipts_control_wait_data(struct ipts_context *ipts, bool block); - --/* -+/** - * ipts_control_send_feedback() - Submits a feedback buffer to the device. - * @ipts: The IPTS driver context. - * @buffer: The ID of the buffer containing feedback data. -@@ -63,7 +62,7 @@ int ipts_control_wait_data(struct ipts_context *ipts, bool block); - */ - int ipts_control_send_feedback(struct ipts_context *ipts, u32 buffer); - --/* -+/** - * ipts_control_hid2me_feedback() - Sends HID2ME feedback, a special type of feedback. - * @ipts: The IPTS driver context. - * @cmd: The command that will be run on the device. -@@ -80,7 +79,7 @@ int ipts_control_send_feedback(struct ipts_context *ipts, u32 buffer); - int ipts_control_hid2me_feedback(struct ipts_context *ipts, enum ipts_feedback_cmd_type cmd, - enum ipts_feedback_data_type type, void *data, size_t size); - --/* -+/** - * ipts_control_refill_buffer() - Acknowledges that data in a buffer has been processed. - * @ipts: The IPTS driver context. - * @buffer: The buffer that has been processed and can be refilled. -@@ -100,7 +99,7 @@ static inline int ipts_control_refill_buffer(struct ipts_context *ipts, u32 buff - return ipts_control_send_feedback(ipts, buffer); - } - --/* -+/** - * ipts_control_start() - Initialized the device and starts the data flow. - * @ipts: The IPTS driver context. - * -@@ -108,7 +107,7 @@ static inline int ipts_control_refill_buffer(struct ipts_context *ipts, u32 buff - */ - int ipts_control_start(struct ipts_context *ipts); - --/* -+/** - * ipts_control_stop() - Stops the data flow and resets the device. - * @ipts: The IPTS driver context. - * -@@ -116,7 +115,7 @@ int ipts_control_start(struct ipts_context *ipts); - */ - int ipts_control_stop(struct ipts_context *ipts); - --/* -+/** - * ipts_control_restart() - Stops the device and starts it again. - * @ipts: The IPTS driver context. - * -diff --git a/drivers/hid/ipts/desc.h b/drivers/hid/ipts/desc.h -index c058974a03a1..307438c7c80c 100644 ---- a/drivers/hid/ipts/desc.h -+++ b/drivers/hid/ipts/desc.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2022-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -diff --git a/drivers/hid/ipts/eds1.c b/drivers/hid/ipts/eds1.c -new file mode 100644 -index 000000000000..ecbb3a8bdaf6 ---- /dev/null -+++ b/drivers/hid/ipts/eds1.c -@@ -0,0 +1,103 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+ -+#include "context.h" -+#include "control.h" -+#include "desc.h" -+#include "spec-device.h" -+ -+int ipts_eds1_get_descriptor(struct ipts_context *ipts, u8 **desc_buffer, size_t *desc_size) -+{ -+ size_t size = 0; -+ u8 *buffer = NULL; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!desc_buffer) -+ return -EFAULT; -+ -+ if (!desc_size) -+ return -EFAULT; -+ -+ size = sizeof(ipts_singletouch_descriptor) + sizeof(ipts_fallback_descriptor); -+ -+ buffer = kzalloc(size, GFP_KERNEL); -+ if (!buffer) -+ return -ENOMEM; -+ -+ memcpy(buffer, ipts_singletouch_descriptor, sizeof(ipts_singletouch_descriptor)); -+ memcpy(&buffer[sizeof(ipts_singletouch_descriptor)], ipts_fallback_descriptor, -+ sizeof(ipts_fallback_descriptor)); -+ -+ *desc_size = size; -+ *desc_buffer = buffer; -+ -+ return 0; -+} -+ -+static int ipts_eds1_switch_mode(struct ipts_context *ipts, enum ipts_mode mode) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (ipts->mode == mode) -+ return 0; -+ -+ ipts->mode = mode; -+ -+ ret = ipts_control_restart(ipts); -+ if (ret) -+ dev_err(ipts->dev, "Failed to switch modes: %d\n", ret); -+ -+ return ret; -+} -+ -+int ipts_eds1_raw_request(struct ipts_context *ipts, u8 *buffer, size_t size, u8 report_id, -+ enum hid_report_type report_type, enum hid_class_request request_type) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!buffer) -+ return -EFAULT; -+ -+ if (report_id != IPTS_HID_REPORT_SET_MODE) -+ return -EIO; -+ -+ if (report_type != HID_FEATURE_REPORT) -+ return -EIO; -+ -+ if (size != 2) -+ return -EINVAL; -+ -+ /* -+ * Implement mode switching report for older devices without native HID support. -+ */ -+ -+ if (request_type == HID_REQ_GET_REPORT) { -+ memset(buffer, 0, size); -+ buffer[0] = report_id; -+ buffer[1] = ipts->mode; -+ } else if (request_type == HID_REQ_SET_REPORT) { -+ return ipts_eds1_switch_mode(ipts, buffer[1]); -+ } else { -+ return -EIO; -+ } -+ -+ return ret; -+} -diff --git a/drivers/hid/ipts/eds1.h b/drivers/hid/ipts/eds1.h -new file mode 100644 -index 000000000000..eeeb6575e3e8 ---- /dev/null -+++ b/drivers/hid/ipts/eds1.h -@@ -0,0 +1,35 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+ -+#include "context.h" -+ -+/** -+ * ipts_eds1_get_descriptor() - Assembles the HID descriptor of the device. -+ * @ipts: The IPTS driver context. -+ * @desc_buffer: A pointer to the location where the address of the allocated buffer is stored. -+ * @desc_size: A pointer to the location where the size of the allocated buffer is stored. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_eds1_get_descriptor(struct ipts_context *ipts, u8 **desc_buffer, size_t *desc_size); -+ -+/** -+ * ipts_eds1_raw_request() - Executes an output or feature report on the device. -+ * @ipts: The IPTS driver context. -+ * @buffer: The buffer containing the report. -+ * @size: The size of the buffer. -+ * @report_id: The HID report ID. -+ * @report_type: Whether this report is an output or a feature report. -+ * @request_type: Whether this report requests or sends data. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_eds1_raw_request(struct ipts_context *ipts, u8 *buffer, size_t size, u8 report_id, -+ enum hid_report_type report_type, enum hid_class_request request_type); -diff --git a/drivers/hid/ipts/eds2.c b/drivers/hid/ipts/eds2.c -new file mode 100644 -index 000000000000..e835b460aa79 ---- /dev/null -+++ b/drivers/hid/ipts/eds2.c -@@ -0,0 +1,144 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#include "context.h" -+#include "control.h" -+#include "desc.h" -+#include "spec-data.h" -+ -+int ipts_eds2_get_descriptor(struct ipts_context *ipts, u8 **desc_buffer, size_t *desc_size) -+{ -+ size_t size = 0; -+ u8 *buffer = NULL; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!desc_buffer) -+ return -EFAULT; -+ -+ if (!desc_size) -+ return -EFAULT; -+ -+ size = sizeof(ipts_singletouch_descriptor) + ipts->descriptor.size; -+ -+ buffer = kzalloc(size, GFP_KERNEL); -+ if (!*buffer) -+ return -ENOMEM; -+ -+ memcpy(buffer, ipts_singletouch_descriptor, sizeof(ipts_singletouch_descriptor)); -+ memcpy(&buffer[sizeof(ipts_singletouch_descriptor)], ipts->descriptor.address, -+ ipts->descriptor.size); -+ -+ *desc_size = size; -+ *desc_buffer = buffer; -+ -+ return 0; -+} -+ -+static int ipts_eds2_get_feature(struct ipts_context *ipts, u8 *buffer, size_t size, u8 report_id, -+ enum ipts_feedback_data_type type) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!buffer) -+ return -EFAULT; -+ -+ mutex_lock(&ipts->feature_lock); -+ -+ memset(buffer, 0, size); -+ buffer[0] = report_id; -+ -+ memset(&ipts->feature_report, 0, sizeof(ipts->feature_report)); -+ reinit_completion(&ipts->feature_event); -+ -+ ret = ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_NONE, type, buffer, size); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to send hid2me feedback: %d\n", ret); -+ goto out; -+ } -+ -+ ret = wait_for_completion_timeout(&ipts->feature_event, msecs_to_jiffies(5000)); -+ if (ret == 0) { -+ dev_warn(ipts->dev, "GET_FEATURES timed out!\n"); -+ ret = -EIO; -+ goto out; -+ } -+ -+ if (!ipts->feature_report.address) { -+ ret = -EFAULT; -+ goto out; -+ } -+ -+ if (ipts->feature_report.size > size) { -+ ret = -ETOOSMALL; -+ goto out; -+ } -+ -+ ret = ipts->feature_report.size; -+ memcpy(buffer, ipts->feature_report.address, ipts->feature_report.size); -+ -+out: -+ mutex_unlock(&ipts->feature_lock); -+ return ret; -+} -+ -+static int ipts_eds2_set_feature(struct ipts_context *ipts, u8 *buffer, size_t size, u8 report_id, -+ enum ipts_feedback_data_type type) -+{ -+ int ret = 0; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!buffer) -+ return -EFAULT; -+ -+ buffer[0] = report_id; -+ -+ ret = ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_NONE, type, buffer, size); -+ if (ret) -+ dev_err(ipts->dev, "Failed to send hid2me feedback: %d\n", ret); -+ -+ return ret; -+} -+ -+int ipts_eds2_raw_request(struct ipts_context *ipts, u8 *buffer, size_t size, u8 report_id, -+ enum hid_report_type report_type, enum hid_class_request request_type) -+{ -+ enum ipts_feedback_data_type feedback_type = IPTS_FEEDBACK_DATA_TYPE_VENDOR; -+ -+ if (!ipts) -+ return -EFAULT; -+ -+ if (!buffer) -+ return -EFAULT; -+ -+ if (report_type == HID_OUTPUT_REPORT && request_type == HID_REQ_SET_REPORT) -+ feedback_type = IPTS_FEEDBACK_DATA_TYPE_OUTPUT_REPORT; -+ else if (report_type == HID_FEATURE_REPORT && request_type == HID_REQ_GET_REPORT) -+ feedback_type = IPTS_FEEDBACK_DATA_TYPE_GET_FEATURES; -+ else if (report_type == HID_FEATURE_REPORT && request_type == HID_REQ_SET_REPORT) -+ feedback_type = IPTS_FEEDBACK_DATA_TYPE_SET_FEATURES; -+ else -+ return -EIO; -+ -+ if (request_type == HID_REQ_GET_REPORT) -+ return ipts_eds2_get_feature(ipts, buffer, report_id, size, feedback_type); -+ else -+ return ipts_eds2_set_feature(ipts, buffer, report_id, size, feedback_type); -+} -diff --git a/drivers/hid/ipts/eds2.h b/drivers/hid/ipts/eds2.h -new file mode 100644 -index 000000000000..064e3716907a ---- /dev/null -+++ b/drivers/hid/ipts/eds2.h -@@ -0,0 +1,35 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * Copyright (c) 2023 Dorian Stoll -+ * -+ * Linux driver for Intel Precise Touch & Stylus -+ */ -+ -+#include -+#include -+ -+#include "context.h" -+ -+/** -+ * ipts_eds2_get_descriptor() - Assembles the HID descriptor of the device. -+ * @ipts: The IPTS driver context. -+ * @desc_buffer: A pointer to the location where the address of the allocated buffer is stored. -+ * @desc_size: A pointer to the location where the size of the allocated buffer is stored. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_eds2_get_descriptor(struct ipts_context *ipts, u8 **desc_buffer, size_t *desc_size); -+ -+/** -+ * ipts_eds2_raw_request() - Executes an output or feature report on the device. -+ * @ipts: The IPTS driver context. -+ * @buffer: The buffer containing the report. -+ * @size: The size of the buffer. -+ * @report_id: The HID report ID. -+ * @report_type: Whether this report is an output or a feature report. -+ * @request_type: Whether this report requests or sends data. -+ * -+ * Returns: 0 on success, <0 on error. -+ */ -+int ipts_eds2_raw_request(struct ipts_context *ipts, u8 *buffer, size_t size, u8 report_id, -+ enum hid_report_type report_type, enum hid_class_request request_type); -diff --git a/drivers/hid/ipts/hid.c b/drivers/hid/ipts/hid.c -index a2471219615b..e34a1a4f9fa7 100644 ---- a/drivers/hid/ipts/hid.c -+++ b/drivers/hid/ipts/hid.c -@@ -1,12 +1,12 @@ - // SPDX-License-Identifier: GPL-2.0-or-later - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2022-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus - */ - - #include -+#include - #include - #include - #include -@@ -14,38 +14,30 @@ - #include - - #include "context.h" --#include "control.h" - #include "desc.h" -+#include "eds1.h" -+#include "eds2.h" - #include "hid.h" - #include "spec-data.h" --#include "spec-device.h" - #include "spec-hid.h" - --static int ipts_hid_start(struct hid_device *hid) -+void ipts_hid_enable(struct ipts_context *ipts) - { -- return 0; -+ WRITE_ONCE(ipts->hid_active, true); - } - --static void ipts_hid_stop(struct hid_device *hid) -+void ipts_hid_disable(struct ipts_context *ipts) - { -+ WRITE_ONCE(ipts->hid_active, false); - } - --static int ipts_hid_switch_mode(struct ipts_context *ipts, enum ipts_mode mode) -+static int ipts_hid_start(struct hid_device *hid) - { -- if (!ipts) -- return -EFAULT; -- -- if (ipts->mode == mode) -- return 0; -- -- /* -- * This is only allowed on older devices. -- */ -- if (ipts->info.intf_eds > 1) -- return 0; -+ return 0; -+} - -- ipts->mode = mode; -- return ipts_control_restart(ipts); -+static void ipts_hid_stop(struct hid_device *hid) -+{ - } - - static int ipts_hid_parse(struct hid_device *hid) -@@ -53,8 +45,6 @@ static int ipts_hid_parse(struct hid_device *hid) - int ret = 0; - struct ipts_context *ipts = NULL; - -- bool has_native_descriptor = false; -- - u8 *buffer = NULL; - size_t size = 0; - -@@ -66,26 +56,17 @@ static int ipts_hid_parse(struct hid_device *hid) - if (!ipts) - return -EFAULT; - -- size = sizeof(ipts_singletouch_descriptor); -- has_native_descriptor = ipts->descriptor.address && ipts->descriptor.size > 0; -+ if (!READ_ONCE(ipts->hid_active)) -+ return -ENODEV; - -- if (has_native_descriptor) -- size += ipts->descriptor.size; -+ if (ipts->info.intf_eds == 1) -+ ret = ipts_eds1_get_descriptor(ipts, &buffer, &size); - else -- size += sizeof(ipts_fallback_descriptor); -- -- buffer = kzalloc(size, GFP_KERNEL); -- if (!buffer) -- return -ENOMEM; -- -- memcpy(buffer, ipts_singletouch_descriptor, sizeof(ipts_singletouch_descriptor)); -+ ret = ipts_eds2_get_descriptor(ipts, &buffer, &size); - -- if (has_native_descriptor) { -- memcpy(&buffer[sizeof(ipts_singletouch_descriptor)], ipts->descriptor.address, -- ipts->descriptor.size); -- } else { -- memcpy(&buffer[sizeof(ipts_singletouch_descriptor)], ipts_fallback_descriptor, -- sizeof(ipts_fallback_descriptor)); -+ if (ret) { -+ dev_err(ipts->dev, "Failed to allocate HID descriptor: %d\n", ret); -+ return ret; - } - - ret = hid_parse_report(hid, buffer, size); -@@ -99,84 +80,11 @@ static int ipts_hid_parse(struct hid_device *hid) - return 0; - } - --static int ipts_hid_get_feature(struct ipts_context *ipts, unsigned char reportnum, __u8 *buf, -- size_t size, enum ipts_feedback_data_type type) --{ -- int ret = 0; -- -- if (!ipts) -- return -EFAULT; -- -- if (!buf) -- return -EFAULT; -- -- mutex_lock(&ipts->feature_lock); -- -- memset(buf, 0, size); -- buf[0] = reportnum; -- -- memset(&ipts->feature_report, 0, sizeof(ipts->feature_report)); -- reinit_completion(&ipts->feature_event); -- -- ret = ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_NONE, type, buf, size); -- if (ret) { -- dev_err(ipts->dev, "Failed to send hid2me feedback: %d\n", ret); -- goto out; -- } -- -- ret = wait_for_completion_timeout(&ipts->feature_event, msecs_to_jiffies(5000)); -- if (ret == 0) { -- dev_warn(ipts->dev, "GET_FEATURES timed out!\n"); -- ret = -EIO; -- goto out; -- } -- -- if (!ipts->feature_report.address) { -- ret = -EFAULT; -- goto out; -- } -- -- if (ipts->feature_report.size > size) { -- ret = -ETOOSMALL; -- goto out; -- } -- -- ret = ipts->feature_report.size; -- memcpy(buf, ipts->feature_report.address, ipts->feature_report.size); -- --out: -- mutex_unlock(&ipts->feature_lock); -- return ret; --} -- --static int ipts_hid_set_feature(struct ipts_context *ipts, unsigned char reportnum, __u8 *buf, -- size_t size, enum ipts_feedback_data_type type) --{ -- int ret = 0; -- -- if (!ipts) -- return -EFAULT; -- -- if (!buf) -- return -EFAULT; -- -- buf[0] = reportnum; -- -- ret = ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_NONE, type, buf, size); -- if (ret) -- dev_err(ipts->dev, "Failed to send hid2me feedback: %d\n", ret); -- -- return ret; --} -- --static int ipts_hid_raw_request(struct hid_device *hid, unsigned char reportnum, __u8 *buf, -- size_t size, unsigned char rtype, int reqtype) -+static int ipts_hid_raw_request(struct hid_device *hid, unsigned char report_id, __u8 *buffer, -+ size_t size, unsigned char report_type, int request_type) - { -- int ret = 0; - struct ipts_context *ipts = NULL; - -- enum ipts_feedback_data_type type = IPTS_FEEDBACK_DATA_TYPE_VENDOR; -- - if (!hid) - return -ENODEV; - -@@ -185,44 +93,16 @@ static int ipts_hid_raw_request(struct hid_device *hid, unsigned char reportnum, - if (!ipts) - return -EFAULT; - -- if (!buf) -- return -EFAULT; -- -- if (rtype == HID_OUTPUT_REPORT && reqtype == HID_REQ_SET_REPORT) -- type = IPTS_FEEDBACK_DATA_TYPE_OUTPUT_REPORT; -- else if (rtype == HID_FEATURE_REPORT && reqtype == HID_REQ_GET_REPORT) -- type = IPTS_FEEDBACK_DATA_TYPE_GET_FEATURES; -- else if (rtype == HID_FEATURE_REPORT && reqtype == HID_REQ_SET_REPORT) -- type = IPTS_FEEDBACK_DATA_TYPE_SET_FEATURES; -- else -- return -EIO; -- -- // Implemente mode switching report for older devices without native HID support -- if (type == IPTS_FEEDBACK_DATA_TYPE_SET_FEATURES && reportnum == IPTS_HID_REPORT_SET_MODE) { -- ret = ipts_hid_switch_mode(ipts, buf[1]); -- if (ret) { -- dev_err(ipts->dev, "Failed to switch modes: %d\n", ret); -- return ret; -- } -- } -- -- if (reqtype == HID_REQ_GET_REPORT) -- return ipts_hid_get_feature(ipts, reportnum, buf, size, type); -- else -- return ipts_hid_set_feature(ipts, reportnum, buf, size, type); --} -- --static int ipts_hid_output_report(struct hid_device *hid, __u8 *data, size_t size) --{ -- struct ipts_context *ipts = NULL; -- -- if (!hid) -+ if (!READ_ONCE(ipts->hid_active)) - return -ENODEV; - -- ipts = hid->driver_data; -- -- return ipts_control_hid2me_feedback(ipts, IPTS_FEEDBACK_CMD_TYPE_NONE, -- IPTS_FEEDBACK_DATA_TYPE_OUTPUT_REPORT, data, size); -+ if (ipts->info.intf_eds == 1) { -+ return ipts_eds1_raw_request(ipts, buffer, size, report_id, report_type, -+ request_type); -+ } else { -+ return ipts_eds2_raw_request(ipts, buffer, size, report_id, report_type, -+ request_type); -+ } - } - - static struct hid_ll_driver ipts_hid_driver = { -@@ -232,7 +112,6 @@ static struct hid_ll_driver ipts_hid_driver = { - .close = ipts_hid_stop, - .parse = ipts_hid_parse, - .raw_request = ipts_hid_raw_request, -- .output_report = ipts_hid_output_report, - }; - - int ipts_hid_input_data(struct ipts_context *ipts, u32 buffer) -@@ -247,6 +126,9 @@ int ipts_hid_input_data(struct ipts_context *ipts, u32 buffer) - if (!ipts->hid) - return -ENODEV; - -+ if (!READ_ONCE(ipts->hid_active)) -+ return -ENODEV; -+ - header = (struct ipts_data_header *)ipts->resources.data[buffer].address; - - temp = ipts->resources.report.address; -diff --git a/drivers/hid/ipts/hid.h b/drivers/hid/ipts/hid.h -index 62bf3cd48608..1ebe77447903 100644 ---- a/drivers/hid/ipts/hid.h -+++ b/drivers/hid/ipts/hid.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2022-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -@@ -14,6 +13,9 @@ - #include "context.h" - #include "spec-device.h" - -+void ipts_hid_enable(struct ipts_context *ipts); -+void ipts_hid_disable(struct ipts_context *ipts); -+ - int ipts_hid_input_data(struct ipts_context *ipts, u32 buffer); - - int ipts_hid_init(struct ipts_context *ipts, struct ipts_device_info info); -diff --git a/drivers/hid/ipts/main.c b/drivers/hid/ipts/main.c -index 0f20c6c08c38..fb5b5c13ee3e 100644 ---- a/drivers/hid/ipts/main.c -+++ b/drivers/hid/ipts/main.c -@@ -1,6 +1,5 @@ - // SPDX-License-Identifier: GPL-2.0-or-later - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -diff --git a/drivers/hid/ipts/mei.c b/drivers/hid/ipts/mei.c -index 26666fd99b0c..1e0395ceae4a 100644 ---- a/drivers/hid/ipts/mei.c -+++ b/drivers/hid/ipts/mei.c -@@ -1,6 +1,5 @@ - // SPDX-License-Identifier: GPL-2.0-or-later - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -diff --git a/drivers/hid/ipts/mei.h b/drivers/hid/ipts/mei.h -index eadacae54c40..973bade6b0fd 100644 ---- a/drivers/hid/ipts/mei.h -+++ b/drivers/hid/ipts/mei.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -@@ -31,7 +30,7 @@ struct ipts_mei { - struct rw_semaphore message_lock; - }; - --/* -+/** - * ipts_mei_recv() - Receive data from a MEI device. - * @mei: The IPTS MEI device context. - * @code: The IPTS command code to look for. -@@ -45,7 +44,7 @@ struct ipts_mei { - int ipts_mei_recv(struct ipts_mei *mei, enum ipts_command_code code, struct ipts_response *rsp, - u64 timeout); - --/* -+/** - * ipts_mei_send() - Send data to a MEI device. - * @ipts: The IPTS MEI device context. - * @data: The data to send. -@@ -55,7 +54,7 @@ int ipts_mei_recv(struct ipts_mei *mei, enum ipts_command_code code, struct ipts - */ - int ipts_mei_send(struct ipts_mei *mei, void *data, size_t length); - --/* -+/** - * ipts_mei_init() - Initialize the MEI device context. - * @mei: The MEI device context to initialize. - * @cldev: The MEI device the context will be bound to. -diff --git a/drivers/hid/ipts/receiver.c b/drivers/hid/ipts/receiver.c -index f56e9ed32d57..ef66c3c9db80 100644 ---- a/drivers/hid/ipts/receiver.c -+++ b/drivers/hid/ipts/receiver.c -@@ -1,6 +1,5 @@ - // SPDX-License-Identifier: GPL-2.0-or-later - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -@@ -66,7 +65,9 @@ static int ipts_receiver_event_loop(struct ipts_thread *thread) - dev_info(ipts->dev, "IPTS running in event mode\n"); - - while (!ipts_thread_should_stop(thread)) { -- for (int i = 0; i < IPTS_BUFFERS; i++) { -+ int i = 0; -+ -+ for (i = 0; i < IPTS_BUFFERS; i++) { - ret = ipts_control_wait_data(ipts, false); - if (ret == -EAGAIN) - break; -@@ -126,7 +127,7 @@ static int ipts_receiver_event_loop(struct ipts_thread *thread) - return 0; - } - --static int ipts_receiver_doorbell_loop(struct ipts_thread *thread) -+static int ipts_receiver_poll_loop(struct ipts_thread *thread) - { - int ret = 0; - u32 buffer = 0; -@@ -145,7 +146,7 @@ static int ipts_receiver_doorbell_loop(struct ipts_thread *thread) - if (!ipts) - return -EFAULT; - -- dev_info(ipts->dev, "IPTS running in doorbell mode\n"); -+ dev_info(ipts->dev, "IPTS running in poll mode\n"); - - while (true) { - if (ipts_thread_should_stop(thread)) { -@@ -217,9 +218,9 @@ int ipts_receiver_start(struct ipts_context *ipts) - if (ipts->mode == IPTS_MODE_EVENT) { - ret = ipts_thread_start(&ipts->receiver_loop, ipts_receiver_event_loop, ipts, - "ipts_event"); -- } else if (ipts->mode == IPTS_MODE_DOORBELL) { -- ret = ipts_thread_start(&ipts->receiver_loop, ipts_receiver_doorbell_loop, ipts, -- "ipts_doorbell"); -+ } else if (ipts->mode == IPTS_MODE_POLL) { -+ ret = ipts_thread_start(&ipts->receiver_loop, ipts_receiver_poll_loop, ipts, -+ "ipts_poll"); - } else { - ret = -EINVAL; - } -diff --git a/drivers/hid/ipts/receiver.h b/drivers/hid/ipts/receiver.h -index 96070f34fbca..3de7da62d40c 100644 ---- a/drivers/hid/ipts/receiver.h -+++ b/drivers/hid/ipts/receiver.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -diff --git a/drivers/hid/ipts/resources.c b/drivers/hid/ipts/resources.c -index 5e924d58c488..cc14653b2a9f 100644 ---- a/drivers/hid/ipts/resources.c -+++ b/drivers/hid/ipts/resources.c -@@ -1,12 +1,12 @@ - // SPDX-License-Identifier: GPL-2.0-or-later - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus - */ - - #include -+#include - #include - - #include "desc.h" -@@ -107,10 +107,6 @@ int ipts_resources_init(struct ipts_resources *res, struct device *dev, size_t d - - int ipts_resources_free(struct ipts_resources *res) - { -- /* -- * Some compilers (AOSP clang) complain about a redefined -- * variable when this is declared inside of the for loop. -- */ - int i = 0; - - if (!res) -diff --git a/drivers/hid/ipts/resources.h b/drivers/hid/ipts/resources.h -index e0c400f420b9..2068e13285f0 100644 ---- a/drivers/hid/ipts/resources.h -+++ b/drivers/hid/ipts/resources.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -diff --git a/drivers/hid/ipts/spec-device.h b/drivers/hid/ipts/spec-device.h -index 93f673d981f7..41845f9d9025 100644 ---- a/drivers/hid/ipts/spec-device.h -+++ b/drivers/hid/ipts/spec-device.h -@@ -109,14 +109,14 @@ static_assert(sizeof(struct ipts_command) == 324); - - /** - * enum ipts_mode - Configures what data the device produces and how its sent. -- * @IPTS_MODE_EVENT: The device will send an event once a buffer was filled. -- * Older devices will return singletouch data in this mode. -- * @IPTS_MODE_DOORBELL: The device will notify the driver by incrementing the doorbell value. -- * Older devices will return multitouch data in this mode. -+ * @IPTS_MODE_EVENT: The device will send an event once a buffer was filled. -+ * Older devices will return singletouch data in this mode. -+ * @IPTS_MODE_POLL: The device will notify the driver by incrementing the doorbell value. -+ * Older devices will return multitouch data in this mode. - */ - enum ipts_mode { - IPTS_MODE_EVENT = 0x00, -- IPTS_MODE_DOORBELL = 0x01, -+ IPTS_MODE_POLL = 0x01, - }; - - /** -@@ -253,14 +253,19 @@ static_assert(sizeof(struct ipts_response) == 88); - - /** - * struct ipts_device_info - Vendor information of the IPTS device. -- * @vendor: Vendor ID of this device. -- * @product: Product ID of this device. -- * @hw_version: Hardware revision of this device. -- * @fw_version: Firmware revision of this device. -- * @data_size: Requested size for a data buffer. -- * @feedback_size: Requested size for a feedback buffer. -- * @mode: Mode that the device currently operates in. -- * @max_contacts: Maximum amount of concurrent touches the sensor can process. -+ * @vendor: Vendor ID of this device. -+ * @product: Product ID of this device. -+ * @hw_version: Hardware revision of this device. -+ * @fw_version: Firmware revision of this device. -+ * @data_size: Requested size for a data buffer. -+ * @feedback_size: Requested size for a feedback buffer. -+ * @mode: Mode that the device currently operates in. -+ * @max_contacts: Maximum amount of concurrent touches the sensor can process. -+ * @sensor_min_eds: The minimum EDS version supported by the sensor. -+ * @sensor_max_eds: The maximum EDS version supported by the sensor. -+ * @me_min_eds: The minimum EDS version supported by the ME for communicating with the sensor. -+ * @me_max_eds: The maximum EDS version supported by the ME for communicating with the sensor. -+ * @intf_eds: The EDS version implemented by the interface between ME and host. - */ - struct ipts_device_info { - u16 vendor; -diff --git a/drivers/hid/ipts/spec-hid.h b/drivers/hid/ipts/spec-hid.h -index ea70f29ff00c..5a58d4a0a610 100644 ---- a/drivers/hid/ipts/spec-hid.h -+++ b/drivers/hid/ipts/spec-hid.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2020-2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -diff --git a/drivers/hid/ipts/thread.c b/drivers/hid/ipts/thread.c -index 8b46f775c107..355e92bea26f 100644 ---- a/drivers/hid/ipts/thread.c -+++ b/drivers/hid/ipts/thread.c -@@ -1,6 +1,5 @@ - // SPDX-License-Identifier: GPL-2.0-or-later - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -diff --git a/drivers/hid/ipts/thread.h b/drivers/hid/ipts/thread.h -index a314843599fc..1f966b8b32c4 100644 ---- a/drivers/hid/ipts/thread.h -+++ b/drivers/hid/ipts/thread.h -@@ -1,6 +1,5 @@ - /* SPDX-License-Identifier: GPL-2.0-or-later */ - /* -- * Copyright (c) 2016 Intel Corporation - * Copyright (c) 2023 Dorian Stoll - * - * Linux driver for Intel Precise Touch & Stylus -@@ -29,7 +28,7 @@ struct ipts_thread { - int (*threadfn)(struct ipts_thread *thread); - }; - --/* -+/** - * ipts_thread_should_stop() - Returns true if the thread is asked to terminate. - * @thread: The current thread. - * -@@ -37,7 +36,7 @@ struct ipts_thread { - */ - bool ipts_thread_should_stop(struct ipts_thread *thread); - --/* -+/** - * ipts_thread_start() - Starts an IPTS thread. - * @thread: The thread to initialize and start. - * @threadfn: The function to execute. -@@ -49,7 +48,7 @@ bool ipts_thread_should_stop(struct ipts_thread *thread); - int ipts_thread_start(struct ipts_thread *thread, int (*threadfn)(struct ipts_thread *thread), - void *data, const char name[]); - --/* -+/** - * ipts_thread_stop() - Asks the thread to terminate and waits until it has finished. - * @thread: The thread that should stop. - * --- -2.42.0 - -From caf8cc911482d8a28f18fbe04ccdadb428bf48e8 Mon Sep 17 00:00:00 2001 -From: Dorian Stoll -Date: Sat, 22 Jul 2023 17:08:56 +0200 -Subject: [PATCH] Update IPTS from module repo - -Changes: - * Fix allocating the HID descriptor on EDS v2 - -Idk why I wrote that, for EDS v1 I got it right ... - -Based on https://github.com/linux-surface/intel-precise-touch/commit/32622a37f27113067a6c9aff21627859caab43f9 - -Signed-off-by: Dorian Stoll -Patchset: ipts ---- - drivers/hid/ipts/eds2.c | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - -diff --git a/drivers/hid/ipts/eds2.c b/drivers/hid/ipts/eds2.c -index e835b460aa79..7c5cbafdb279 100644 ---- a/drivers/hid/ipts/eds2.c -+++ b/drivers/hid/ipts/eds2.c -@@ -34,7 +34,7 @@ int ipts_eds2_get_descriptor(struct ipts_context *ipts, u8 **desc_buffer, size_t - size = sizeof(ipts_singletouch_descriptor) + ipts->descriptor.size; - - buffer = kzalloc(size, GFP_KERNEL); -- if (!*buffer) -+ if (!buffer) - return -ENOMEM; - - memcpy(buffer, ipts_singletouch_descriptor, sizeof(ipts_singletouch_descriptor)); --- -2.42.0 - -From 891dd6386c0a7c7a12b1dbab7170b97d0ddb8543 Mon Sep 17 00:00:00 2001 -From: Dorian Stoll -Date: Sun, 23 Jul 2023 17:55:15 +0200 -Subject: [PATCH] Update IPTS from module repo - -Changes: - * Fix swapped parameters in EDS v2 - -Based on https://github.com/linux-surface/intel-precise-touch/commit/4b5c013d0140c47e4a009adf9a053a45bb0532a3 - -Signed-off-by: Dorian Stoll -Patchset: ipts ---- - drivers/hid/ipts/eds2.c | 4 ++-- - 1 file changed, 2 insertions(+), 2 deletions(-) - -diff --git a/drivers/hid/ipts/eds2.c b/drivers/hid/ipts/eds2.c -index 7c5cbafdb279..198dc65d7887 100644 ---- a/drivers/hid/ipts/eds2.c -+++ b/drivers/hid/ipts/eds2.c -@@ -138,7 +138,7 @@ int ipts_eds2_raw_request(struct ipts_context *ipts, u8 *buffer, size_t size, u8 - return -EIO; - - if (request_type == HID_REQ_GET_REPORT) -- return ipts_eds2_get_feature(ipts, buffer, report_id, size, feedback_type); -+ return ipts_eds2_get_feature(ipts, buffer, size, report_id, feedback_type); - else -- return ipts_eds2_set_feature(ipts, buffer, report_id, size, feedback_type); -+ return ipts_eds2_set_feature(ipts, buffer, size, report_id, feedback_type); - } --- -2.42.0 - diff --git a/patches/6.4/0005-ithc.patch b/patches/6.4/0005-ithc.patch deleted file mode 100644 index 927c2b161..000000000 --- a/patches/6.4/0005-ithc.patch +++ /dev/null @@ -1,1433 +0,0 @@ -From de8e6e5f1d2324336292b470b1c7e4a015baba23 Mon Sep 17 00:00:00 2001 -From: Dorian Stoll -Date: Sun, 11 Dec 2022 12:03:38 +0100 -Subject: [PATCH] iommu: intel: Disable source id verification for ITHC - -Signed-off-by: Dorian Stoll -Patchset: ithc ---- - drivers/iommu/intel/irq_remapping.c | 16 ++++++++++++++++ - 1 file changed, 16 insertions(+) - -diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c -index a1b987335b31..970805409470 100644 ---- a/drivers/iommu/intel/irq_remapping.c -+++ b/drivers/iommu/intel/irq_remapping.c -@@ -390,6 +390,22 @@ static int set_msi_sid(struct irte *irte, struct pci_dev *dev) - data.busmatch_count = 0; - pci_for_each_dma_alias(dev, set_msi_sid_cb, &data); - -+ /* -+ * The Intel Touch Host Controller is at 00:10.6, but for some reason -+ * the MSI interrupts have request id 01:05.0. -+ * Disable id verification to work around this. -+ * FIXME Find proper fix or turn this into a quirk. -+ */ -+ if (dev->vendor == PCI_VENDOR_ID_INTEL && (dev->class >> 8) == PCI_CLASS_INPUT_PEN) { -+ switch(dev->device) { -+ case 0x98d0: case 0x98d1: // LKF -+ case 0xa0d0: case 0xa0d1: // TGL LP -+ case 0x43d0: case 0x43d1: // TGL H -+ set_irte_sid(irte, SVT_NO_VERIFY, SQ_ALL_16, 0); -+ return 0; -+ } -+ } -+ - /* - * DMA alias provides us with a PCI device and alias. The only case - * where the it will return an alias on a different bus than the --- -2.42.0 - -From 0acabea1031724a9af7023b35efb4c24e60e5842 Mon Sep 17 00:00:00 2001 -From: Dorian Stoll -Date: Sun, 11 Dec 2022 12:10:54 +0100 -Subject: [PATCH] hid: Add support for Intel Touch Host Controller - -Based on quo/ithc-linux@55803a2 - -Signed-off-by: Dorian Stoll -Patchset: ithc ---- - drivers/hid/Kconfig | 2 + - drivers/hid/Makefile | 1 + - drivers/hid/ithc/Kbuild | 6 + - drivers/hid/ithc/Kconfig | 12 + - drivers/hid/ithc/ithc-debug.c | 96 ++++++ - drivers/hid/ithc/ithc-dma.c | 258 ++++++++++++++++ - drivers/hid/ithc/ithc-dma.h | 67 +++++ - drivers/hid/ithc/ithc-main.c | 534 ++++++++++++++++++++++++++++++++++ - drivers/hid/ithc/ithc-regs.c | 64 ++++ - drivers/hid/ithc/ithc-regs.h | 186 ++++++++++++ - drivers/hid/ithc/ithc.h | 60 ++++ - 11 files changed, 1286 insertions(+) - create mode 100644 drivers/hid/ithc/Kbuild - create mode 100644 drivers/hid/ithc/Kconfig - create mode 100644 drivers/hid/ithc/ithc-debug.c - create mode 100644 drivers/hid/ithc/ithc-dma.c - create mode 100644 drivers/hid/ithc/ithc-dma.h - create mode 100644 drivers/hid/ithc/ithc-main.c - create mode 100644 drivers/hid/ithc/ithc-regs.c - create mode 100644 drivers/hid/ithc/ithc-regs.h - create mode 100644 drivers/hid/ithc/ithc.h - -diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig -index dcedd5b90f35..847c6b07914d 100644 ---- a/drivers/hid/Kconfig -+++ b/drivers/hid/Kconfig -@@ -1318,4 +1318,6 @@ source "drivers/hid/surface-hid/Kconfig" - - source "drivers/hid/ipts/Kconfig" - -+source "drivers/hid/ithc/Kconfig" -+ - endif # HID_SUPPORT -diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile -index 285e12d95b0e..a3ff62e922f1 100644 ---- a/drivers/hid/Makefile -+++ b/drivers/hid/Makefile -@@ -169,3 +169,4 @@ obj-$(CONFIG_AMD_SFH_HID) += amd-sfh-hid/ - obj-$(CONFIG_SURFACE_HID_CORE) += surface-hid/ - - obj-$(CONFIG_HID_IPTS) += ipts/ -+obj-$(CONFIG_HID_ITHC) += ithc/ -diff --git a/drivers/hid/ithc/Kbuild b/drivers/hid/ithc/Kbuild -new file mode 100644 -index 000000000000..aea83f2ac07b ---- /dev/null -+++ b/drivers/hid/ithc/Kbuild -@@ -0,0 +1,6 @@ -+obj-$(CONFIG_HID_ITHC) := ithc.o -+ -+ithc-objs := ithc-main.o ithc-regs.o ithc-dma.o ithc-debug.o -+ -+ccflags-y := -std=gnu11 -Wno-declaration-after-statement -+ -diff --git a/drivers/hid/ithc/Kconfig b/drivers/hid/ithc/Kconfig -new file mode 100644 -index 000000000000..ede713023609 ---- /dev/null -+++ b/drivers/hid/ithc/Kconfig -@@ -0,0 +1,12 @@ -+config HID_ITHC -+ tristate "Intel Touch Host Controller" -+ depends on PCI -+ depends on HID -+ help -+ Say Y here if your system has a touchscreen using Intels -+ Touch Host Controller (ITHC / IPTS) technology. -+ -+ If unsure say N. -+ -+ To compile this driver as a module, choose M here: the -+ module will be called ithc. -diff --git a/drivers/hid/ithc/ithc-debug.c b/drivers/hid/ithc/ithc-debug.c -new file mode 100644 -index 000000000000..57bf125c45bd ---- /dev/null -+++ b/drivers/hid/ithc/ithc-debug.c -@@ -0,0 +1,96 @@ -+#include "ithc.h" -+ -+void ithc_log_regs(struct ithc *ithc) { -+ if (!ithc->prev_regs) return; -+ u32 __iomem *cur = (__iomem void*)ithc->regs; -+ u32 *prev = (void*)ithc->prev_regs; -+ for (int i = 1024; i < sizeof *ithc->regs / 4; i++) { -+ u32 x = readl(cur + i); -+ if (x != prev[i]) { -+ pci_info(ithc->pci, "reg %04x: %08x -> %08x\n", i * 4, prev[i], x); -+ prev[i] = x; -+ } -+ } -+} -+ -+static ssize_t ithc_debugfs_cmd_write(struct file *f, const char __user *buf, size_t len, loff_t *offset) { -+ struct ithc *ithc = file_inode(f)->i_private; -+ char cmd[256]; -+ if (!ithc || !ithc->pci) return -ENODEV; -+ if (!len) return -EINVAL; -+ if (len >= sizeof cmd) return -EINVAL; -+ if (copy_from_user(cmd, buf, len)) return -EFAULT; -+ cmd[len] = 0; -+ if (cmd[len-1] == '\n') cmd[len-1] = 0; -+ pci_info(ithc->pci, "debug command: %s\n", cmd); -+ u32 n = 0; -+ const char *s = cmd + 1; -+ u32 a[32]; -+ while (*s && *s != '\n') { -+ if (n >= ARRAY_SIZE(a)) return -EINVAL; -+ if (*s++ != ' ') return -EINVAL; -+ char *e; -+ a[n++] = simple_strtoul(s, &e, 0); -+ if (e == s) return -EINVAL; -+ s = e; -+ } -+ ithc_log_regs(ithc); -+ switch(cmd[0]) { -+ case 'x': // reset -+ ithc_reset(ithc); -+ break; -+ case 'w': // write register: offset mask value -+ if (n != 3 || (a[0] & 3)) return -EINVAL; -+ pci_info(ithc->pci, "debug write 0x%04x = 0x%08x (mask 0x%08x)\n", a[0], a[2], a[1]); -+ bitsl(((__iomem u32 *)ithc->regs) + a[0] / 4, a[1], a[2]); -+ break; -+ case 'r': // read register: offset -+ if (n != 1 || (a[0] & 3)) return -EINVAL; -+ pci_info(ithc->pci, "debug read 0x%04x = 0x%08x\n", a[0], readl(((__iomem u32 *)ithc->regs) + a[0] / 4)); -+ break; -+ case 's': // spi command: cmd offset len data... -+ // read config: s 4 0 64 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -+ // set touch cfg: s 6 12 4 XX -+ if (n < 3 || a[2] > (n - 3) * 4) return -EINVAL; -+ pci_info(ithc->pci, "debug spi command %u with %u bytes of data\n", a[0], a[2]); -+ if (!CHECK(ithc_spi_command, ithc, a[0], a[1], a[2], a + 3)) -+ for (u32 i = 0; i < (a[2] + 3) / 4; i++) pci_info(ithc->pci, "resp %u = 0x%08x\n", i, a[3+i]); -+ break; -+ case 'd': // dma command: cmd len data... -+ // get report descriptor: d 7 8 0 0 -+ // enable multitouch: d 3 2 0x0105 -+ if (n < 2 || a[1] > (n - 2) * 4) return -EINVAL; -+ pci_info(ithc->pci, "debug dma command %u with %u bytes of data\n", a[0], a[1]); -+ if (ithc_dma_tx(ithc, a[0], a[1], a + 2)) pci_err(ithc->pci, "dma tx failed\n"); -+ break; -+ default: -+ return -EINVAL; -+ } -+ ithc_log_regs(ithc); -+ return len; -+} -+ -+static const struct file_operations ithc_debugfops_cmd = { -+ .owner = THIS_MODULE, -+ .write = ithc_debugfs_cmd_write, -+}; -+ -+static void ithc_debugfs_devres_release(struct device *dev, void *res) { -+ struct dentry **dbgm = res; -+ if (*dbgm) debugfs_remove_recursive(*dbgm); -+} -+ -+int ithc_debug_init(struct ithc *ithc) { -+ struct dentry **dbgm = devres_alloc(ithc_debugfs_devres_release, sizeof *dbgm, GFP_KERNEL); -+ if (!dbgm) return -ENOMEM; -+ devres_add(&ithc->pci->dev, dbgm); -+ struct dentry *dbg = debugfs_create_dir(DEVNAME, NULL); -+ if (IS_ERR(dbg)) return PTR_ERR(dbg); -+ *dbgm = dbg; -+ -+ struct dentry *cmd = debugfs_create_file("cmd", 0220, dbg, ithc, &ithc_debugfops_cmd); -+ if (IS_ERR(cmd)) return PTR_ERR(cmd); -+ -+ return 0; -+} -+ -diff --git a/drivers/hid/ithc/ithc-dma.c b/drivers/hid/ithc/ithc-dma.c -new file mode 100644 -index 000000000000..7e89b3496918 ---- /dev/null -+++ b/drivers/hid/ithc/ithc-dma.c -@@ -0,0 +1,258 @@ -+#include "ithc.h" -+ -+static int ithc_dma_prd_alloc(struct ithc *ithc, struct ithc_dma_prd_buffer *p, unsigned num_buffers, unsigned num_pages, enum dma_data_direction dir) { -+ p->num_pages = num_pages; -+ p->dir = dir; -+ p->size = round_up(num_buffers * num_pages * sizeof(struct ithc_phys_region_desc), PAGE_SIZE); -+ p->addr = dmam_alloc_coherent(&ithc->pci->dev, p->size, &p->dma_addr, GFP_KERNEL); -+ if (!p->addr) return -ENOMEM; -+ if (p->dma_addr & (PAGE_SIZE - 1)) return -EFAULT; -+ return 0; -+} -+ -+struct ithc_sg_table { -+ void *addr; -+ struct sg_table sgt; -+ enum dma_data_direction dir; -+}; -+static void ithc_dma_sgtable_free(struct sg_table *sgt) { -+ struct scatterlist *sg; -+ int i; -+ for_each_sgtable_sg(sgt, sg, i) { -+ struct page *p = sg_page(sg); -+ if (p) __free_page(p); -+ } -+ sg_free_table(sgt); -+} -+static void ithc_dma_data_devres_release(struct device *dev, void *res) { -+ struct ithc_sg_table *sgt = res; -+ if (sgt->addr) vunmap(sgt->addr); -+ dma_unmap_sgtable(dev, &sgt->sgt, sgt->dir, 0); -+ ithc_dma_sgtable_free(&sgt->sgt); -+} -+ -+static int ithc_dma_data_alloc(struct ithc* ithc, struct ithc_dma_prd_buffer *prds, struct ithc_dma_data_buffer *b) { -+ // We don't use dma_alloc_coherent for data buffers, because they don't have to be contiguous (we can use one PRD per page) or coherent (they are unidirectional). -+ // Instead we use an sg_table of individually allocated pages (5.13 has dma_alloc_noncontiguous for this, but we'd like to support 5.10 for now). -+ struct page *pages[16]; -+ if (prds->num_pages == 0 || prds->num_pages > ARRAY_SIZE(pages)) return -EINVAL; -+ b->active_idx = -1; -+ struct ithc_sg_table *sgt = devres_alloc(ithc_dma_data_devres_release, sizeof *sgt, GFP_KERNEL); -+ if (!sgt) return -ENOMEM; -+ sgt->dir = prds->dir; -+ if (!sg_alloc_table(&sgt->sgt, prds->num_pages, GFP_KERNEL)) { -+ struct scatterlist *sg; -+ int i; -+ bool ok = true; -+ for_each_sgtable_sg(&sgt->sgt, sg, i) { -+ struct page *p = pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO); // don't need __GFP_DMA for PCI DMA -+ if (!p) { ok = false; break; } -+ sg_set_page(sg, p, PAGE_SIZE, 0); -+ } -+ if (ok && !dma_map_sgtable(&ithc->pci->dev, &sgt->sgt, prds->dir, 0)) { -+ devres_add(&ithc->pci->dev, sgt); -+ b->sgt = &sgt->sgt; -+ b->addr = sgt->addr = vmap(pages, prds->num_pages, 0, PAGE_KERNEL); -+ if (!b->addr) return -ENOMEM; -+ return 0; -+ } -+ ithc_dma_sgtable_free(&sgt->sgt); -+ } -+ devres_free(sgt); -+ return -ENOMEM; -+} -+ -+static int ithc_dma_data_buffer_put(struct ithc *ithc, struct ithc_dma_prd_buffer *prds, struct ithc_dma_data_buffer *b, unsigned idx) { -+ struct ithc_phys_region_desc *prd = prds->addr; -+ prd += idx * prds->num_pages; -+ if (b->active_idx >= 0) { pci_err(ithc->pci, "buffer already active\n"); return -EINVAL; } -+ b->active_idx = idx; -+ if (prds->dir == DMA_TO_DEVICE) { -+ if (b->data_size > PAGE_SIZE) return -EINVAL; -+ prd->addr = sg_dma_address(b->sgt->sgl) >> 10; -+ prd->size = b->data_size | PRD_FLAG_END; -+ flush_kernel_vmap_range(b->addr, b->data_size); -+ } else if (prds->dir == DMA_FROM_DEVICE) { -+ struct scatterlist *sg; -+ int i; -+ for_each_sgtable_dma_sg(b->sgt, sg, i) { -+ prd->addr = sg_dma_address(sg) >> 10; -+ prd->size = sg_dma_len(sg); -+ prd++; -+ } -+ prd[-1].size |= PRD_FLAG_END; -+ } -+ dma_wmb(); // for the prds -+ dma_sync_sgtable_for_device(&ithc->pci->dev, b->sgt, prds->dir); -+ return 0; -+} -+ -+static int ithc_dma_data_buffer_get(struct ithc *ithc, struct ithc_dma_prd_buffer *prds, struct ithc_dma_data_buffer *b, unsigned idx) { -+ struct ithc_phys_region_desc *prd = prds->addr; -+ prd += idx * prds->num_pages; -+ if (b->active_idx != idx) { pci_err(ithc->pci, "wrong buffer index\n"); return -EINVAL; } -+ b->active_idx = -1; -+ if (prds->dir == DMA_FROM_DEVICE) { -+ dma_rmb(); // for the prds -+ b->data_size = 0; -+ struct scatterlist *sg; -+ int i; -+ for_each_sgtable_dma_sg(b->sgt, sg, i) { -+ unsigned size = prd->size; -+ b->data_size += size & PRD_SIZE_MASK; -+ if (size & PRD_FLAG_END) break; -+ if ((size & PRD_SIZE_MASK) != sg_dma_len(sg)) { pci_err(ithc->pci, "truncated prd\n"); break; } -+ prd++; -+ } -+ invalidate_kernel_vmap_range(b->addr, b->data_size); -+ } -+ dma_sync_sgtable_for_cpu(&ithc->pci->dev, b->sgt, prds->dir); -+ return 0; -+} -+ -+int ithc_dma_rx_init(struct ithc *ithc, u8 channel, const char *devname) { -+ struct ithc_dma_rx *rx = &ithc->dma_rx[channel]; -+ mutex_init(&rx->mutex); -+ u32 buf_size = DEVCFG_DMA_RX_SIZE(ithc->config.dma_buf_sizes); -+ unsigned num_pages = (buf_size + PAGE_SIZE - 1) / PAGE_SIZE; -+ pci_dbg(ithc->pci, "allocating rx buffers: num = %u, size = %u, pages = %u\n", NUM_RX_BUF, buf_size, num_pages); -+ CHECK_RET(ithc_dma_prd_alloc, ithc, &rx->prds, NUM_RX_BUF, num_pages, DMA_FROM_DEVICE); -+ for (unsigned i = 0; i < NUM_RX_BUF; i++) -+ CHECK_RET(ithc_dma_data_alloc, ithc, &rx->prds, &rx->bufs[i]); -+ writeb(DMA_RX_CONTROL2_RESET, &ithc->regs->dma_rx[channel].control2); -+ lo_hi_writeq(rx->prds.dma_addr, &ithc->regs->dma_rx[channel].addr); -+ writeb(NUM_RX_BUF - 1, &ithc->regs->dma_rx[channel].num_bufs); -+ writeb(num_pages - 1, &ithc->regs->dma_rx[channel].num_prds); -+ u8 head = readb(&ithc->regs->dma_rx[channel].head); -+ if (head) { pci_err(ithc->pci, "head is nonzero (%u)\n", head); return -EIO; } -+ for (unsigned i = 0; i < NUM_RX_BUF; i++) -+ CHECK_RET(ithc_dma_data_buffer_put, ithc, &rx->prds, &rx->bufs[i], i); -+ writeb(head ^ DMA_RX_WRAP_FLAG, &ithc->regs->dma_rx[channel].tail); -+ return 0; -+} -+void ithc_dma_rx_enable(struct ithc *ithc, u8 channel) { -+ bitsb_set(&ithc->regs->dma_rx[channel].control, DMA_RX_CONTROL_ENABLE | DMA_RX_CONTROL_IRQ_ERROR | DMA_RX_CONTROL_IRQ_DATA); -+ CHECK(waitl, ithc, &ithc->regs->dma_rx[1].status, DMA_RX_STATUS_ENABLED, DMA_RX_STATUS_ENABLED); -+} -+ -+int ithc_dma_tx_init(struct ithc *ithc) { -+ struct ithc_dma_tx *tx = &ithc->dma_tx; -+ mutex_init(&tx->mutex); -+ tx->max_size = DEVCFG_DMA_TX_SIZE(ithc->config.dma_buf_sizes); -+ unsigned num_pages = (tx->max_size + PAGE_SIZE - 1) / PAGE_SIZE; -+ pci_dbg(ithc->pci, "allocating tx buffers: size = %u, pages = %u\n", tx->max_size, num_pages); -+ CHECK_RET(ithc_dma_prd_alloc, ithc, &tx->prds, 1, num_pages, DMA_TO_DEVICE); -+ CHECK_RET(ithc_dma_data_alloc, ithc, &tx->prds, &tx->buf); -+ lo_hi_writeq(tx->prds.dma_addr, &ithc->regs->dma_tx.addr); -+ writeb(num_pages - 1, &ithc->regs->dma_tx.num_prds); -+ CHECK_RET(ithc_dma_data_buffer_put, ithc, &ithc->dma_tx.prds, &ithc->dma_tx.buf, 0); -+ return 0; -+} -+ -+static int ithc_dma_rx_process_buf(struct ithc *ithc, struct ithc_dma_data_buffer *data, u8 channel, u8 buf) { -+ if (buf >= NUM_RX_BUF) { -+ pci_err(ithc->pci, "invalid dma ringbuffer index\n"); -+ return -EINVAL; -+ } -+ ithc_set_active(ithc); -+ u32 len = data->data_size; -+ struct ithc_dma_rx_header *hdr = data->addr; -+ u8 *hiddata = (void *)(hdr + 1); -+ if (len >= sizeof *hdr && hdr->code == DMA_RX_CODE_RESET) { -+ CHECK(ithc_reset, ithc); -+ } else if (len < sizeof *hdr || len != sizeof *hdr + hdr->data_size) { -+ if (hdr->code == DMA_RX_CODE_INPUT_REPORT) { -+ // When the CPU enters a low power state during DMA, we can get truncated messages. -+ // Typically this will be a single touch HID report that is only 1 byte, or a multitouch report that is 257 bytes. -+ // See also ithc_set_active(). -+ } else { -+ pci_err(ithc->pci, "invalid dma rx data! channel %u, buffer %u, size %u, code %u, data size %u\n", channel, buf, len, hdr->code, hdr->data_size); -+ print_hex_dump_debug(DEVNAME " data: ", DUMP_PREFIX_OFFSET, 32, 1, hdr, min(len, 0x400u), 0); -+ } -+ } else if (hdr->code == DMA_RX_CODE_REPORT_DESCRIPTOR && hdr->data_size > 8) { -+ CHECK(hid_parse_report, ithc->hid, hiddata + 8, hdr->data_size - 8); -+ WRITE_ONCE(ithc->hid_parse_done, true); -+ wake_up(&ithc->wait_hid_parse); -+ } else if (hdr->code == DMA_RX_CODE_INPUT_REPORT) { -+ CHECK(hid_input_report, ithc->hid, HID_INPUT_REPORT, hiddata, hdr->data_size, 1); -+ } else if (hdr->code == DMA_RX_CODE_FEATURE_REPORT) { -+ bool done = false; -+ mutex_lock(&ithc->hid_get_feature_mutex); -+ if (ithc->hid_get_feature_buf) { -+ if (hdr->data_size < ithc->hid_get_feature_size) ithc->hid_get_feature_size = hdr->data_size; -+ memcpy(ithc->hid_get_feature_buf, hiddata, ithc->hid_get_feature_size); -+ ithc->hid_get_feature_buf = NULL; -+ done = true; -+ } -+ mutex_unlock(&ithc->hid_get_feature_mutex); -+ if (done) wake_up(&ithc->wait_hid_get_feature); -+ else CHECK(hid_input_report, ithc->hid, HID_FEATURE_REPORT, hiddata, hdr->data_size, 1); -+ } else { -+ pci_dbg(ithc->pci, "unhandled dma rx data! channel %u, buffer %u, size %u, code %u\n", channel, buf, len, hdr->code); -+ print_hex_dump_debug(DEVNAME " data: ", DUMP_PREFIX_OFFSET, 32, 1, hdr, min(len, 0x400u), 0); -+ } -+ return 0; -+} -+ -+static int ithc_dma_rx_unlocked(struct ithc *ithc, u8 channel) { -+ struct ithc_dma_rx *rx = &ithc->dma_rx[channel]; -+ unsigned n = rx->num_received; -+ u8 head_wrap = readb(&ithc->regs->dma_rx[channel].head); -+ while (1) { -+ u8 tail = n % NUM_RX_BUF; -+ u8 tail_wrap = tail | ((n / NUM_RX_BUF) & 1 ? 0 : DMA_RX_WRAP_FLAG); -+ writeb(tail_wrap, &ithc->regs->dma_rx[channel].tail); -+ // ringbuffer is full if tail_wrap == head_wrap -+ // ringbuffer is empty if tail_wrap == head_wrap ^ WRAP_FLAG -+ if (tail_wrap == (head_wrap ^ DMA_RX_WRAP_FLAG)) return 0; -+ -+ // take the buffer that the device just filled -+ struct ithc_dma_data_buffer *b = &rx->bufs[n % NUM_RX_BUF]; -+ CHECK_RET(ithc_dma_data_buffer_get, ithc, &rx->prds, b, tail); -+ rx->num_received = ++n; -+ -+ // process data -+ CHECK(ithc_dma_rx_process_buf, ithc, b, channel, tail); -+ -+ // give the buffer back to the device -+ CHECK_RET(ithc_dma_data_buffer_put, ithc, &rx->prds, b, tail); -+ } -+} -+int ithc_dma_rx(struct ithc *ithc, u8 channel) { -+ struct ithc_dma_rx *rx = &ithc->dma_rx[channel]; -+ mutex_lock(&rx->mutex); -+ int ret = ithc_dma_rx_unlocked(ithc, channel); -+ mutex_unlock(&rx->mutex); -+ return ret; -+} -+ -+static int ithc_dma_tx_unlocked(struct ithc *ithc, u32 cmdcode, u32 datasize, void *data) { -+ pci_dbg(ithc->pci, "dma tx command %u, size %u\n", cmdcode, datasize); -+ struct ithc_dma_tx_header *hdr; -+ u8 padding = datasize & 3 ? 4 - (datasize & 3) : 0; -+ unsigned fullsize = sizeof *hdr + datasize + padding; -+ if (fullsize > ithc->dma_tx.max_size || fullsize > PAGE_SIZE) return -EINVAL; -+ CHECK_RET(ithc_dma_data_buffer_get, ithc, &ithc->dma_tx.prds, &ithc->dma_tx.buf, 0); -+ -+ ithc->dma_tx.buf.data_size = fullsize; -+ hdr = ithc->dma_tx.buf.addr; -+ hdr->code = cmdcode; -+ hdr->data_size = datasize; -+ u8 *dest = (void *)(hdr + 1); -+ memcpy(dest, data, datasize); -+ dest += datasize; -+ for (u8 p = 0; p < padding; p++) *dest++ = 0; -+ CHECK_RET(ithc_dma_data_buffer_put, ithc, &ithc->dma_tx.prds, &ithc->dma_tx.buf, 0); -+ -+ bitsb_set(&ithc->regs->dma_tx.control, DMA_TX_CONTROL_SEND); -+ CHECK_RET(waitb, ithc, &ithc->regs->dma_tx.control, DMA_TX_CONTROL_SEND, 0); -+ writel(DMA_TX_STATUS_DONE, &ithc->regs->dma_tx.status); -+ return 0; -+} -+int ithc_dma_tx(struct ithc *ithc, u32 cmdcode, u32 datasize, void *data) { -+ mutex_lock(&ithc->dma_tx.mutex); -+ int ret = ithc_dma_tx_unlocked(ithc, cmdcode, datasize, data); -+ mutex_unlock(&ithc->dma_tx.mutex); -+ return ret; -+} -+ -diff --git a/drivers/hid/ithc/ithc-dma.h b/drivers/hid/ithc/ithc-dma.h -new file mode 100644 -index 000000000000..d9f2c19a13f3 ---- /dev/null -+++ b/drivers/hid/ithc/ithc-dma.h -@@ -0,0 +1,67 @@ -+#define PRD_SIZE_MASK 0xffffff -+#define PRD_FLAG_END 0x1000000 -+#define PRD_FLAG_SUCCESS 0x2000000 -+#define PRD_FLAG_ERROR 0x4000000 -+ -+struct ithc_phys_region_desc { -+ u64 addr; // physical addr/1024 -+ u32 size; // num bytes, PRD_FLAG_END marks last prd for data split over multiple prds -+ u32 unused; -+}; -+ -+#define DMA_RX_CODE_INPUT_REPORT 3 -+#define DMA_RX_CODE_FEATURE_REPORT 4 -+#define DMA_RX_CODE_REPORT_DESCRIPTOR 5 -+#define DMA_RX_CODE_RESET 7 -+ -+struct ithc_dma_rx_header { -+ u32 code; -+ u32 data_size; -+ u32 _unknown[14]; -+}; -+ -+#define DMA_TX_CODE_SET_FEATURE 3 -+#define DMA_TX_CODE_GET_FEATURE 4 -+#define DMA_TX_CODE_OUTPUT_REPORT 5 -+#define DMA_TX_CODE_GET_REPORT_DESCRIPTOR 7 -+ -+struct ithc_dma_tx_header { -+ u32 code; -+ u32 data_size; -+}; -+ -+struct ithc_dma_prd_buffer { -+ void *addr; -+ dma_addr_t dma_addr; -+ u32 size; -+ u32 num_pages; // per data buffer -+ enum dma_data_direction dir; -+}; -+ -+struct ithc_dma_data_buffer { -+ void *addr; -+ struct sg_table *sgt; -+ int active_idx; -+ u32 data_size; -+}; -+ -+struct ithc_dma_tx { -+ struct mutex mutex; -+ u32 max_size; -+ struct ithc_dma_prd_buffer prds; -+ struct ithc_dma_data_buffer buf; -+}; -+ -+struct ithc_dma_rx { -+ struct mutex mutex; -+ u32 num_received; -+ struct ithc_dma_prd_buffer prds; -+ struct ithc_dma_data_buffer bufs[NUM_RX_BUF]; -+}; -+ -+int ithc_dma_rx_init(struct ithc *ithc, u8 channel, const char *devname); -+void ithc_dma_rx_enable(struct ithc *ithc, u8 channel); -+int ithc_dma_tx_init(struct ithc *ithc); -+int ithc_dma_rx(struct ithc *ithc, u8 channel); -+int ithc_dma_tx(struct ithc *ithc, u32 cmdcode, u32 datasize, void *cmddata); -+ -diff --git a/drivers/hid/ithc/ithc-main.c b/drivers/hid/ithc/ithc-main.c -new file mode 100644 -index 000000000000..09512b9cb4d3 ---- /dev/null -+++ b/drivers/hid/ithc/ithc-main.c -@@ -0,0 +1,534 @@ -+#include "ithc.h" -+ -+MODULE_DESCRIPTION("Intel Touch Host Controller driver"); -+MODULE_LICENSE("Dual BSD/GPL"); -+ -+// Lakefield -+#define PCI_DEVICE_ID_INTEL_THC_LKF_PORT1 0x98d0 -+#define PCI_DEVICE_ID_INTEL_THC_LKF_PORT2 0x98d1 -+// Tiger Lake -+#define PCI_DEVICE_ID_INTEL_THC_TGL_LP_PORT1 0xa0d0 -+#define PCI_DEVICE_ID_INTEL_THC_TGL_LP_PORT2 0xa0d1 -+#define PCI_DEVICE_ID_INTEL_THC_TGL_H_PORT1 0x43d0 -+#define PCI_DEVICE_ID_INTEL_THC_TGL_H_PORT2 0x43d1 -+// Alder Lake -+#define PCI_DEVICE_ID_INTEL_THC_ADL_S_PORT1 0x7ad8 -+#define PCI_DEVICE_ID_INTEL_THC_ADL_S_PORT2 0x7ad9 -+#define PCI_DEVICE_ID_INTEL_THC_ADL_P_PORT1 0x51d0 -+#define PCI_DEVICE_ID_INTEL_THC_ADL_P_PORT2 0x51d1 -+#define PCI_DEVICE_ID_INTEL_THC_ADL_M_PORT1 0x54d0 -+#define PCI_DEVICE_ID_INTEL_THC_ADL_M_PORT2 0x54d1 -+// Raptor Lake -+#define PCI_DEVICE_ID_INTEL_THC_RPL_S_PORT1 0x7a58 -+#define PCI_DEVICE_ID_INTEL_THC_RPL_S_PORT2 0x7a59 -+// Meteor Lake -+#define PCI_DEVICE_ID_INTEL_THC_MTL_PORT1 0x7e48 -+#define PCI_DEVICE_ID_INTEL_THC_MTL_PORT2 0x7e4a -+ -+static const struct pci_device_id ithc_pci_tbl[] = { -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_LKF_PORT1) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_LKF_PORT2) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_TGL_LP_PORT1) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_TGL_LP_PORT2) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_TGL_H_PORT1) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_TGL_H_PORT2) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_ADL_S_PORT1) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_ADL_S_PORT2) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_ADL_P_PORT1) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_ADL_P_PORT2) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_ADL_M_PORT1) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_ADL_M_PORT2) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_RPL_S_PORT1) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_RPL_S_PORT2) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_MTL_PORT1) }, -+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_THC_MTL_PORT2) }, -+ {} -+}; -+MODULE_DEVICE_TABLE(pci, ithc_pci_tbl); -+ -+// Module parameters -+ -+static bool ithc_use_polling = false; -+module_param_named(poll, ithc_use_polling, bool, 0); -+MODULE_PARM_DESC(poll, "Use polling instead of interrupts"); -+ -+static bool ithc_use_rx0 = false; -+module_param_named(rx0, ithc_use_rx0, bool, 0); -+MODULE_PARM_DESC(rx0, "Use DMA RX channel 0"); -+ -+static bool ithc_use_rx1 = true; -+module_param_named(rx1, ithc_use_rx1, bool, 0); -+MODULE_PARM_DESC(rx1, "Use DMA RX channel 1"); -+ -+static bool ithc_log_regs_enabled = false; -+module_param_named(logregs, ithc_log_regs_enabled, bool, 0); -+MODULE_PARM_DESC(logregs, "Log changes in register values (for debugging)"); -+ -+// Sysfs attributes -+ -+static bool ithc_is_config_valid(struct ithc *ithc) { -+ return ithc->config.device_id == DEVCFG_DEVICE_ID_TIC; -+} -+ -+static ssize_t vendor_show(struct device *dev, struct device_attribute *attr, char *buf) { -+ struct ithc *ithc = dev_get_drvdata(dev); -+ if (!ithc || !ithc_is_config_valid(ithc)) return -ENODEV; -+ return sprintf(buf, "0x%04x", ithc->config.vendor_id); -+} -+static DEVICE_ATTR_RO(vendor); -+static ssize_t product_show(struct device *dev, struct device_attribute *attr, char *buf) { -+ struct ithc *ithc = dev_get_drvdata(dev); -+ if (!ithc || !ithc_is_config_valid(ithc)) return -ENODEV; -+ return sprintf(buf, "0x%04x", ithc->config.product_id); -+} -+static DEVICE_ATTR_RO(product); -+static ssize_t revision_show(struct device *dev, struct device_attribute *attr, char *buf) { -+ struct ithc *ithc = dev_get_drvdata(dev); -+ if (!ithc || !ithc_is_config_valid(ithc)) return -ENODEV; -+ return sprintf(buf, "%u", ithc->config.revision); -+} -+static DEVICE_ATTR_RO(revision); -+static ssize_t fw_version_show(struct device *dev, struct device_attribute *attr, char *buf) { -+ struct ithc *ithc = dev_get_drvdata(dev); -+ if (!ithc || !ithc_is_config_valid(ithc)) return -ENODEV; -+ u32 v = ithc->config.fw_version; -+ return sprintf(buf, "%i.%i.%i.%i", v >> 24, v >> 16 & 0xff, v >> 8 & 0xff, v & 0xff); -+} -+static DEVICE_ATTR_RO(fw_version); -+ -+static const struct attribute_group *ithc_attribute_groups[] = { -+ &(const struct attribute_group){ -+ .name = DEVNAME, -+ .attrs = (struct attribute *[]){ -+ &dev_attr_vendor.attr, -+ &dev_attr_product.attr, -+ &dev_attr_revision.attr, -+ &dev_attr_fw_version.attr, -+ NULL -+ }, -+ }, -+ NULL -+}; -+ -+// HID setup -+ -+static int ithc_hid_start(struct hid_device *hdev) { return 0; } -+static void ithc_hid_stop(struct hid_device *hdev) { } -+static int ithc_hid_open(struct hid_device *hdev) { return 0; } -+static void ithc_hid_close(struct hid_device *hdev) { } -+ -+static int ithc_hid_parse(struct hid_device *hdev) { -+ struct ithc *ithc = hdev->driver_data; -+ u64 val = 0; -+ WRITE_ONCE(ithc->hid_parse_done, false); -+ CHECK_RET(ithc_dma_tx, ithc, DMA_TX_CODE_GET_REPORT_DESCRIPTOR, sizeof val, &val); -+ if (!wait_event_timeout(ithc->wait_hid_parse, READ_ONCE(ithc->hid_parse_done), msecs_to_jiffies(1000))) return -ETIMEDOUT; -+ return 0; -+} -+ -+static int ithc_hid_raw_request(struct hid_device *hdev, unsigned char reportnum, __u8 *buf, size_t len, unsigned char rtype, int reqtype) { -+ struct ithc *ithc = hdev->driver_data; -+ if (!buf || !len) return -EINVAL; -+ u32 code; -+ if (rtype == HID_OUTPUT_REPORT && reqtype == HID_REQ_SET_REPORT) code = DMA_TX_CODE_OUTPUT_REPORT; -+ else if (rtype == HID_FEATURE_REPORT && reqtype == HID_REQ_SET_REPORT) code = DMA_TX_CODE_SET_FEATURE; -+ else if (rtype == HID_FEATURE_REPORT && reqtype == HID_REQ_GET_REPORT) code = DMA_TX_CODE_GET_FEATURE; -+ else { -+ pci_err(ithc->pci, "unhandled hid request %i %i for report id %i\n", rtype, reqtype, reportnum); -+ return -EINVAL; -+ } -+ buf[0] = reportnum; -+ if (reqtype == HID_REQ_GET_REPORT) { -+ mutex_lock(&ithc->hid_get_feature_mutex); -+ ithc->hid_get_feature_buf = buf; -+ ithc->hid_get_feature_size = len; -+ mutex_unlock(&ithc->hid_get_feature_mutex); -+ int r = CHECK(ithc_dma_tx, ithc, code, 1, buf); -+ if (!r) { -+ r = wait_event_interruptible_timeout(ithc->wait_hid_get_feature, !ithc->hid_get_feature_buf, msecs_to_jiffies(1000)); -+ if (!r) r = -ETIMEDOUT; -+ else if (r < 0) r = -EINTR; -+ else r = 0; -+ } -+ mutex_lock(&ithc->hid_get_feature_mutex); -+ ithc->hid_get_feature_buf = NULL; -+ if (!r) r = ithc->hid_get_feature_size; -+ mutex_unlock(&ithc->hid_get_feature_mutex); -+ return r; -+ } -+ CHECK_RET(ithc_dma_tx, ithc, code, len, buf); -+ return 0; -+} -+ -+static struct hid_ll_driver ithc_ll_driver = { -+ .start = ithc_hid_start, -+ .stop = ithc_hid_stop, -+ .open = ithc_hid_open, -+ .close = ithc_hid_close, -+ .parse = ithc_hid_parse, -+ .raw_request = ithc_hid_raw_request, -+}; -+ -+static void ithc_hid_devres_release(struct device *dev, void *res) { -+ struct hid_device **hidm = res; -+ if (*hidm) hid_destroy_device(*hidm); -+} -+ -+static int ithc_hid_init(struct ithc *ithc) { -+ struct hid_device **hidm = devres_alloc(ithc_hid_devres_release, sizeof *hidm, GFP_KERNEL); -+ if (!hidm) return -ENOMEM; -+ devres_add(&ithc->pci->dev, hidm); -+ struct hid_device *hid = hid_allocate_device(); -+ if (IS_ERR(hid)) return PTR_ERR(hid); -+ *hidm = hid; -+ -+ strscpy(hid->name, DEVFULLNAME, sizeof(hid->name)); -+ strscpy(hid->phys, ithc->phys, sizeof(hid->phys)); -+ hid->ll_driver = &ithc_ll_driver; -+ hid->bus = BUS_PCI; -+ hid->vendor = ithc->config.vendor_id; -+ hid->product = ithc->config.product_id; -+ hid->version = 0x100; -+ hid->dev.parent = &ithc->pci->dev; -+ hid->driver_data = ithc; -+ -+ ithc->hid = hid; -+ return 0; -+} -+ -+// Interrupts/polling -+ -+static void ithc_activity_timer_callback(struct timer_list *t) { -+ struct ithc *ithc = container_of(t, struct ithc, activity_timer); -+ cpu_latency_qos_update_request(&ithc->activity_qos, PM_QOS_DEFAULT_VALUE); -+} -+ -+void ithc_set_active(struct ithc *ithc) { -+ // When CPU usage is very low, the CPU can enter various low power states (C2-C10). -+ // This disrupts DMA, causing truncated DMA messages. ERROR_FLAG_DMA_UNKNOWN_12 will be set when this happens. -+ // The amount of truncated messages can become very high, resulting in user-visible effects (laggy/stuttering cursor). -+ // To avoid this, we use a CPU latency QoS request to prevent the CPU from entering low power states during touch interactions. -+ cpu_latency_qos_update_request(&ithc->activity_qos, 0); -+ mod_timer(&ithc->activity_timer, jiffies + msecs_to_jiffies(1000)); -+} -+ -+static int ithc_set_device_enabled(struct ithc *ithc, bool enable) { -+ u32 x = ithc->config.touch_cfg = (ithc->config.touch_cfg & ~(u32)DEVCFG_TOUCH_MASK) | DEVCFG_TOUCH_UNKNOWN_2 -+ | (enable ? DEVCFG_TOUCH_ENABLE | DEVCFG_TOUCH_UNKNOWN_3 | DEVCFG_TOUCH_UNKNOWN_4 : 0); -+ return ithc_spi_command(ithc, SPI_CMD_CODE_WRITE, offsetof(struct ithc_device_config, touch_cfg), sizeof x, &x); -+} -+ -+static void ithc_disable_interrupts(struct ithc *ithc) { -+ writel(0, &ithc->regs->error_control); -+ bitsb(&ithc->regs->spi_cmd.control, SPI_CMD_CONTROL_IRQ, 0); -+ bitsb(&ithc->regs->dma_rx[0].control, DMA_RX_CONTROL_IRQ_UNKNOWN_1 | DMA_RX_CONTROL_IRQ_ERROR | DMA_RX_CONTROL_IRQ_UNKNOWN_4 | DMA_RX_CONTROL_IRQ_DATA, 0); -+ bitsb(&ithc->regs->dma_rx[1].control, DMA_RX_CONTROL_IRQ_UNKNOWN_1 | DMA_RX_CONTROL_IRQ_ERROR | DMA_RX_CONTROL_IRQ_UNKNOWN_4 | DMA_RX_CONTROL_IRQ_DATA, 0); -+ bitsb(&ithc->regs->dma_tx.control, DMA_TX_CONTROL_IRQ, 0); -+} -+ -+static void ithc_clear_dma_rx_interrupts(struct ithc *ithc, unsigned channel) { -+ writel(DMA_RX_STATUS_ERROR | DMA_RX_STATUS_UNKNOWN_4 | DMA_RX_STATUS_HAVE_DATA, &ithc->regs->dma_rx[channel].status); -+} -+ -+static void ithc_clear_interrupts(struct ithc *ithc) { -+ writel(0xffffffff, &ithc->regs->error_flags); -+ writel(ERROR_STATUS_DMA | ERROR_STATUS_SPI, &ithc->regs->error_status); -+ writel(SPI_CMD_STATUS_DONE | SPI_CMD_STATUS_ERROR, &ithc->regs->spi_cmd.status); -+ ithc_clear_dma_rx_interrupts(ithc, 0); -+ ithc_clear_dma_rx_interrupts(ithc, 1); -+ writel(DMA_TX_STATUS_DONE | DMA_TX_STATUS_ERROR | DMA_TX_STATUS_UNKNOWN_2, &ithc->regs->dma_tx.status); -+} -+ -+static void ithc_process(struct ithc *ithc) { -+ ithc_log_regs(ithc); -+ -+ // read and clear error bits -+ u32 err = readl(&ithc->regs->error_flags); -+ if (err) { -+ if (err & ~ERROR_FLAG_DMA_UNKNOWN_12) pci_err(ithc->pci, "error flags: 0x%08x\n", err); -+ writel(err, &ithc->regs->error_flags); -+ } -+ -+ // process DMA rx -+ if (ithc_use_rx0) { -+ ithc_clear_dma_rx_interrupts(ithc, 0); -+ ithc_dma_rx(ithc, 0); -+ } -+ if (ithc_use_rx1) { -+ ithc_clear_dma_rx_interrupts(ithc, 1); -+ ithc_dma_rx(ithc, 1); -+ } -+ -+ ithc_log_regs(ithc); -+} -+ -+static irqreturn_t ithc_interrupt_thread(int irq, void *arg) { -+ struct ithc *ithc = arg; -+ pci_dbg(ithc->pci, "IRQ! err=%08x/%08x/%08x, cmd=%02x/%08x, rx0=%02x/%08x, rx1=%02x/%08x, tx=%02x/%08x\n", -+ readl(&ithc->regs->error_control), readl(&ithc->regs->error_status), readl(&ithc->regs->error_flags), -+ readb(&ithc->regs->spi_cmd.control), readl(&ithc->regs->spi_cmd.status), -+ readb(&ithc->regs->dma_rx[0].control), readl(&ithc->regs->dma_rx[0].status), -+ readb(&ithc->regs->dma_rx[1].control), readl(&ithc->regs->dma_rx[1].status), -+ readb(&ithc->regs->dma_tx.control), readl(&ithc->regs->dma_tx.status)); -+ ithc_process(ithc); -+ return IRQ_HANDLED; -+} -+ -+static int ithc_poll_thread(void *arg) { -+ struct ithc *ithc = arg; -+ unsigned sleep = 100; -+ while (!kthread_should_stop()) { -+ u32 n = ithc->dma_rx[1].num_received; -+ ithc_process(ithc); -+ if (n != ithc->dma_rx[1].num_received) sleep = 20; -+ else sleep = min(200u, sleep + (sleep >> 4) + 1); -+ msleep_interruptible(sleep); -+ } -+ return 0; -+} -+ -+// Device initialization and shutdown -+ -+static void ithc_disable(struct ithc *ithc) { -+ bitsl_set(&ithc->regs->control_bits, CONTROL_QUIESCE); -+ CHECK(waitl, ithc, &ithc->regs->control_bits, CONTROL_IS_QUIESCED, CONTROL_IS_QUIESCED); -+ bitsl(&ithc->regs->control_bits, CONTROL_NRESET, 0); -+ bitsb(&ithc->regs->spi_cmd.control, SPI_CMD_CONTROL_SEND, 0); -+ bitsb(&ithc->regs->dma_tx.control, DMA_TX_CONTROL_SEND, 0); -+ bitsb(&ithc->regs->dma_rx[0].control, DMA_RX_CONTROL_ENABLE, 0); -+ bitsb(&ithc->regs->dma_rx[1].control, DMA_RX_CONTROL_ENABLE, 0); -+ ithc_disable_interrupts(ithc); -+ ithc_clear_interrupts(ithc); -+} -+ -+static int ithc_init_device(struct ithc *ithc) { -+ ithc_log_regs(ithc); -+ bool was_enabled = (readl(&ithc->regs->control_bits) & CONTROL_NRESET) != 0; -+ ithc_disable(ithc); -+ CHECK_RET(waitl, ithc, &ithc->regs->control_bits, CONTROL_READY, CONTROL_READY); -+ ithc_set_spi_config(ithc, 10, 0); -+ bitsl_set(&ithc->regs->dma_rx[0].unknown_init_bits, 0x80000000); // seems to help with reading config -+ -+ if (was_enabled) if (msleep_interruptible(100)) return -EINTR; -+ bitsl(&ithc->regs->control_bits, CONTROL_QUIESCE, 0); -+ CHECK_RET(waitl, ithc, &ithc->regs->control_bits, CONTROL_IS_QUIESCED, 0); -+ for (int retries = 0; ; retries++) { -+ ithc_log_regs(ithc); -+ bitsl_set(&ithc->regs->control_bits, CONTROL_NRESET); -+ if (!waitl(ithc, &ithc->regs->state, 0xf, 2)) break; -+ if (retries > 5) { -+ pci_err(ithc->pci, "too many retries, failed to reset device\n"); -+ return -ETIMEDOUT; -+ } -+ pci_err(ithc->pci, "invalid state, retrying reset\n"); -+ bitsl(&ithc->regs->control_bits, CONTROL_NRESET, 0); -+ if (msleep_interruptible(1000)) return -EINTR; -+ } -+ ithc_log_regs(ithc); -+ -+ CHECK(waitl, ithc, &ithc->regs->dma_rx[0].status, DMA_RX_STATUS_UNKNOWN_4, DMA_RX_STATUS_UNKNOWN_4); -+ -+ // read config -+ for (int retries = 0; ; retries++) { -+ ithc_log_regs(ithc); -+ memset(&ithc->config, 0, sizeof ithc->config); -+ CHECK_RET(ithc_spi_command, ithc, SPI_CMD_CODE_READ, 0, sizeof ithc->config, &ithc->config); -+ u32 *p = (void *)&ithc->config; -+ pci_info(ithc->pci, "config: %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n", -+ p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]); -+ if (ithc_is_config_valid(ithc)) break; -+ if (retries > 10) { -+ pci_err(ithc->pci, "failed to read config, unknown device ID 0x%08x\n", ithc->config.device_id); -+ return -EIO; -+ } -+ pci_err(ithc->pci, "failed to read config, retrying\n"); -+ if (msleep_interruptible(100)) return -EINTR; -+ } -+ ithc_log_regs(ithc); -+ -+ CHECK_RET(ithc_set_spi_config, ithc, DEVCFG_SPI_MAX_FREQ(ithc->config.spi_config), DEVCFG_SPI_MODE(ithc->config.spi_config)); -+ CHECK_RET(ithc_set_device_enabled, ithc, true); -+ ithc_log_regs(ithc); -+ return 0; -+} -+ -+int ithc_reset(struct ithc *ithc) { -+ // FIXME This should probably do devres_release_group()+ithc_start(). But because this is called during DMA -+ // processing, that would have to be done asynchronously (schedule_work()?). And with extra locking? -+ pci_err(ithc->pci, "reset\n"); -+ CHECK(ithc_init_device, ithc); -+ if (ithc_use_rx0) ithc_dma_rx_enable(ithc, 0); -+ if (ithc_use_rx1) ithc_dma_rx_enable(ithc, 1); -+ ithc_log_regs(ithc); -+ pci_dbg(ithc->pci, "reset completed\n"); -+ return 0; -+} -+ -+static void ithc_stop(void *res) { -+ struct ithc *ithc = res; -+ pci_dbg(ithc->pci, "stopping\n"); -+ ithc_log_regs(ithc); -+ if (ithc->poll_thread) CHECK(kthread_stop, ithc->poll_thread); -+ if (ithc->irq >= 0) disable_irq(ithc->irq); -+ CHECK(ithc_set_device_enabled, ithc, false); -+ ithc_disable(ithc); -+ del_timer_sync(&ithc->activity_timer); -+ cpu_latency_qos_remove_request(&ithc->activity_qos); -+ // clear dma config -+ for(unsigned i = 0; i < 2; i++) { -+ CHECK(waitl, ithc, &ithc->regs->dma_rx[i].status, DMA_RX_STATUS_ENABLED, 0); -+ lo_hi_writeq(0, &ithc->regs->dma_rx[i].addr); -+ writeb(0, &ithc->regs->dma_rx[i].num_bufs); -+ writeb(0, &ithc->regs->dma_rx[i].num_prds); -+ } -+ lo_hi_writeq(0, &ithc->regs->dma_tx.addr); -+ writeb(0, &ithc->regs->dma_tx.num_prds); -+ ithc_log_regs(ithc); -+ pci_dbg(ithc->pci, "stopped\n"); -+} -+ -+static void ithc_clear_drvdata(void *res) { -+ struct pci_dev *pci = res; -+ pci_set_drvdata(pci, NULL); -+} -+ -+static int ithc_start(struct pci_dev *pci) { -+ pci_dbg(pci, "starting\n"); -+ if (pci_get_drvdata(pci)) { -+ pci_err(pci, "device already initialized\n"); -+ return -EINVAL; -+ } -+ if (!devres_open_group(&pci->dev, ithc_start, GFP_KERNEL)) return -ENOMEM; -+ -+ struct ithc *ithc = devm_kzalloc(&pci->dev, sizeof *ithc, GFP_KERNEL); -+ if (!ithc) return -ENOMEM; -+ ithc->irq = -1; -+ ithc->pci = pci; -+ snprintf(ithc->phys, sizeof ithc->phys, "pci-%s/" DEVNAME, pci_name(pci)); -+ init_waitqueue_head(&ithc->wait_hid_parse); -+ init_waitqueue_head(&ithc->wait_hid_get_feature); -+ mutex_init(&ithc->hid_get_feature_mutex); -+ pci_set_drvdata(pci, ithc); -+ CHECK_RET(devm_add_action_or_reset, &pci->dev, ithc_clear_drvdata, pci); -+ if (ithc_log_regs_enabled) ithc->prev_regs = devm_kzalloc(&pci->dev, sizeof *ithc->prev_regs, GFP_KERNEL); -+ -+ CHECK_RET(pcim_enable_device, pci); -+ pci_set_master(pci); -+ CHECK_RET(pcim_iomap_regions, pci, BIT(0), DEVNAME " regs"); -+ CHECK_RET(dma_set_mask_and_coherent, &pci->dev, DMA_BIT_MASK(64)); -+ CHECK_RET(pci_set_power_state, pci, PCI_D0); -+ ithc->regs = pcim_iomap_table(pci)[0]; -+ -+ if (!ithc_use_polling) { -+ CHECK_RET(pci_alloc_irq_vectors, pci, 1, 1, PCI_IRQ_MSI | PCI_IRQ_MSIX); -+ ithc->irq = CHECK(pci_irq_vector, pci, 0); -+ if (ithc->irq < 0) return ithc->irq; -+ } -+ -+ CHECK_RET(ithc_init_device, ithc); -+ CHECK(devm_device_add_groups, &pci->dev, ithc_attribute_groups); -+ if (ithc_use_rx0) CHECK_RET(ithc_dma_rx_init, ithc, 0, ithc_use_rx1 ? DEVNAME "0" : DEVNAME); -+ if (ithc_use_rx1) CHECK_RET(ithc_dma_rx_init, ithc, 1, ithc_use_rx0 ? DEVNAME "1" : DEVNAME); -+ CHECK_RET(ithc_dma_tx_init, ithc); -+ -+ CHECK_RET(ithc_hid_init, ithc); -+ -+ cpu_latency_qos_add_request(&ithc->activity_qos, PM_QOS_DEFAULT_VALUE); -+ timer_setup(&ithc->activity_timer, ithc_activity_timer_callback, 0); -+ -+ // add ithc_stop callback AFTER setting up DMA buffers, so that polling/irqs/DMA are disabled BEFORE the buffers are freed -+ CHECK_RET(devm_add_action_or_reset, &pci->dev, ithc_stop, ithc); -+ -+ if (ithc_use_polling) { -+ pci_info(pci, "using polling instead of irq\n"); -+ // use a thread instead of simple timer because we want to be able to sleep -+ ithc->poll_thread = kthread_run(ithc_poll_thread, ithc, DEVNAME "poll"); -+ if (IS_ERR(ithc->poll_thread)) { -+ int err = PTR_ERR(ithc->poll_thread); -+ ithc->poll_thread = NULL; -+ return err; -+ } -+ } else { -+ CHECK_RET(devm_request_threaded_irq, &pci->dev, ithc->irq, NULL, ithc_interrupt_thread, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, DEVNAME, ithc); -+ } -+ -+ if (ithc_use_rx0) ithc_dma_rx_enable(ithc, 0); -+ if (ithc_use_rx1) ithc_dma_rx_enable(ithc, 1); -+ -+ // hid_add_device can only be called after irq/polling is started and DMA is enabled, because it calls ithc_hid_parse which reads the report descriptor via DMA -+ CHECK_RET(hid_add_device, ithc->hid); -+ -+ CHECK(ithc_debug_init, ithc); -+ -+ pci_dbg(pci, "started\n"); -+ return 0; -+} -+ -+static int ithc_probe(struct pci_dev *pci, const struct pci_device_id *id) { -+ pci_dbg(pci, "device probe\n"); -+ return ithc_start(pci); -+} -+ -+static void ithc_remove(struct pci_dev *pci) { -+ pci_dbg(pci, "device remove\n"); -+ // all cleanup is handled by devres -+} -+ -+static int ithc_suspend(struct device *dev) { -+ struct pci_dev *pci = to_pci_dev(dev); -+ pci_dbg(pci, "pm suspend\n"); -+ devres_release_group(dev, ithc_start); -+ return 0; -+} -+ -+static int ithc_resume(struct device *dev) { -+ struct pci_dev *pci = to_pci_dev(dev); -+ pci_dbg(pci, "pm resume\n"); -+ return ithc_start(pci); -+} -+ -+static int ithc_freeze(struct device *dev) { -+ struct pci_dev *pci = to_pci_dev(dev); -+ pci_dbg(pci, "pm freeze\n"); -+ devres_release_group(dev, ithc_start); -+ return 0; -+} -+ -+static int ithc_thaw(struct device *dev) { -+ struct pci_dev *pci = to_pci_dev(dev); -+ pci_dbg(pci, "pm thaw\n"); -+ return ithc_start(pci); -+} -+ -+static int ithc_restore(struct device *dev) { -+ struct pci_dev *pci = to_pci_dev(dev); -+ pci_dbg(pci, "pm restore\n"); -+ return ithc_start(pci); -+} -+ -+static struct pci_driver ithc_driver = { -+ .name = DEVNAME, -+ .id_table = ithc_pci_tbl, -+ .probe = ithc_probe, -+ .remove = ithc_remove, -+ .driver.pm = &(const struct dev_pm_ops) { -+ .suspend = ithc_suspend, -+ .resume = ithc_resume, -+ .freeze = ithc_freeze, -+ .thaw = ithc_thaw, -+ .restore = ithc_restore, -+ }, -+ //.dev_groups = ithc_attribute_groups, // could use this (since 5.14), however the attributes won't have valid values until config has been read anyway -+}; -+ -+static int __init ithc_init(void) { -+ return pci_register_driver(&ithc_driver); -+} -+ -+static void __exit ithc_exit(void) { -+ pci_unregister_driver(&ithc_driver); -+} -+ -+module_init(ithc_init); -+module_exit(ithc_exit); -+ -diff --git a/drivers/hid/ithc/ithc-regs.c b/drivers/hid/ithc/ithc-regs.c -new file mode 100644 -index 000000000000..85d567b05761 ---- /dev/null -+++ b/drivers/hid/ithc/ithc-regs.c -@@ -0,0 +1,64 @@ -+#include "ithc.h" -+ -+#define reg_num(r) (0x1fff & (u16)(__force u64)(r)) -+ -+void bitsl(__iomem u32 *reg, u32 mask, u32 val) { -+ if (val & ~mask) pr_err("register 0x%x: invalid value 0x%x for bitmask 0x%x\n", reg_num(reg), val, mask); -+ writel((readl(reg) & ~mask) | (val & mask), reg); -+} -+ -+void bitsb(__iomem u8 *reg, u8 mask, u8 val) { -+ if (val & ~mask) pr_err("register 0x%x: invalid value 0x%x for bitmask 0x%x\n", reg_num(reg), val, mask); -+ writeb((readb(reg) & ~mask) | (val & mask), reg); -+} -+ -+int waitl(struct ithc *ithc, __iomem u32 *reg, u32 mask, u32 val) { -+ pci_dbg(ithc->pci, "waiting for reg 0x%04x mask 0x%08x val 0x%08x\n", reg_num(reg), mask, val); -+ u32 x; -+ if (readl_poll_timeout(reg, x, (x & mask) == val, 200, 1000*1000)) { -+ pci_err(ithc->pci, "timed out waiting for reg 0x%04x mask 0x%08x val 0x%08x\n", reg_num(reg), mask, val); -+ return -ETIMEDOUT; -+ } -+ pci_dbg(ithc->pci, "done waiting\n"); -+ return 0; -+} -+ -+int waitb(struct ithc *ithc, __iomem u8 *reg, u8 mask, u8 val) { -+ pci_dbg(ithc->pci, "waiting for reg 0x%04x mask 0x%02x val 0x%02x\n", reg_num(reg), mask, val); -+ u8 x; -+ if (readb_poll_timeout(reg, x, (x & mask) == val, 200, 1000*1000)) { -+ pci_err(ithc->pci, "timed out waiting for reg 0x%04x mask 0x%02x val 0x%02x\n", reg_num(reg), mask, val); -+ return -ETIMEDOUT; -+ } -+ pci_dbg(ithc->pci, "done waiting\n"); -+ return 0; -+} -+ -+int ithc_set_spi_config(struct ithc *ithc, u8 speed, u8 mode) { -+ pci_dbg(ithc->pci, "setting SPI speed to %i, mode %i\n", speed, mode); -+ if (mode == 3) mode = 2; -+ bitsl(&ithc->regs->spi_config, -+ SPI_CONFIG_MODE(0xff) | SPI_CONFIG_SPEED(0xff) | SPI_CONFIG_UNKNOWN_18(0xff) | SPI_CONFIG_SPEED2(0xff), -+ SPI_CONFIG_MODE(mode) | SPI_CONFIG_SPEED(speed) | SPI_CONFIG_UNKNOWN_18(0) | SPI_CONFIG_SPEED2(speed)); -+ return 0; -+} -+ -+int ithc_spi_command(struct ithc *ithc, u8 command, u32 offset, u32 size, void *data) { -+ pci_dbg(ithc->pci, "SPI command %u, size %u, offset %u\n", command, size, offset); -+ if (size > sizeof ithc->regs->spi_cmd.data) return -EINVAL; -+ CHECK_RET(waitl, ithc, &ithc->regs->spi_cmd.status, SPI_CMD_STATUS_BUSY, 0); -+ writel(SPI_CMD_STATUS_DONE | SPI_CMD_STATUS_ERROR, &ithc->regs->spi_cmd.status); -+ writeb(command, &ithc->regs->spi_cmd.code); -+ writew(size, &ithc->regs->spi_cmd.size); -+ writel(offset, &ithc->regs->spi_cmd.offset); -+ u32 *p = data, n = (size + 3) / 4; -+ for (u32 i = 0; i < n; i++) writel(p[i], &ithc->regs->spi_cmd.data[i]); -+ bitsb_set(&ithc->regs->spi_cmd.control, SPI_CMD_CONTROL_SEND); -+ CHECK_RET(waitl, ithc, &ithc->regs->spi_cmd.status, SPI_CMD_STATUS_BUSY, 0); -+ if ((readl(&ithc->regs->spi_cmd.status) & (SPI_CMD_STATUS_DONE | SPI_CMD_STATUS_ERROR)) != SPI_CMD_STATUS_DONE) return -EIO; -+ if (readw(&ithc->regs->spi_cmd.size) != size) return -EMSGSIZE; -+ for (u32 i = 0; i < n; i++) p[i] = readl(&ithc->regs->spi_cmd.data[i]); -+ writel(SPI_CMD_STATUS_DONE | SPI_CMD_STATUS_ERROR, &ithc->regs->spi_cmd.status); -+ return 0; -+} -+ -diff --git a/drivers/hid/ithc/ithc-regs.h b/drivers/hid/ithc/ithc-regs.h -new file mode 100644 -index 000000000000..1a96092ed7ee ---- /dev/null -+++ b/drivers/hid/ithc/ithc-regs.h -@@ -0,0 +1,186 @@ -+#define CONTROL_QUIESCE BIT(1) -+#define CONTROL_IS_QUIESCED BIT(2) -+#define CONTROL_NRESET BIT(3) -+#define CONTROL_READY BIT(29) -+ -+#define SPI_CONFIG_MODE(x) (((x) & 3) << 2) -+#define SPI_CONFIG_SPEED(x) (((x) & 7) << 4) -+#define SPI_CONFIG_UNKNOWN_18(x) (((x) & 3) << 18) -+#define SPI_CONFIG_SPEED2(x) (((x) & 0xf) << 20) // high bit = high speed mode? -+ -+#define ERROR_CONTROL_UNKNOWN_0 BIT(0) -+#define ERROR_CONTROL_DISABLE_DMA BIT(1) // clears DMA_RX_CONTROL_ENABLE when a DMA error occurs -+#define ERROR_CONTROL_UNKNOWN_2 BIT(2) -+#define ERROR_CONTROL_UNKNOWN_3 BIT(3) -+#define ERROR_CONTROL_IRQ_DMA_UNKNOWN_9 BIT(9) -+#define ERROR_CONTROL_IRQ_DMA_UNKNOWN_10 BIT(10) -+#define ERROR_CONTROL_IRQ_DMA_UNKNOWN_12 BIT(12) -+#define ERROR_CONTROL_IRQ_DMA_UNKNOWN_13 BIT(13) -+#define ERROR_CONTROL_UNKNOWN_16(x) (((x) & 0xff) << 16) // spi error code irq? -+#define ERROR_CONTROL_SET_DMA_STATUS BIT(29) // sets DMA_RX_STATUS_ERROR when a DMA error occurs -+ -+#define ERROR_STATUS_DMA BIT(28) -+#define ERROR_STATUS_SPI BIT(30) -+ -+#define ERROR_FLAG_DMA_UNKNOWN_9 BIT(9) -+#define ERROR_FLAG_DMA_UNKNOWN_10 BIT(10) -+#define ERROR_FLAG_DMA_UNKNOWN_12 BIT(12) // set when we receive a truncated DMA message -+#define ERROR_FLAG_DMA_UNKNOWN_13 BIT(13) -+#define ERROR_FLAG_SPI_BUS_TURNAROUND BIT(16) -+#define ERROR_FLAG_SPI_RESPONSE_TIMEOUT BIT(17) -+#define ERROR_FLAG_SPI_INTRA_PACKET_TIMEOUT BIT(18) -+#define ERROR_FLAG_SPI_INVALID_RESPONSE BIT(19) -+#define ERROR_FLAG_SPI_HS_RX_TIMEOUT BIT(20) -+#define ERROR_FLAG_SPI_TOUCH_IC_INIT BIT(21) -+ -+#define SPI_CMD_CONTROL_SEND BIT(0) // cleared by device when sending is complete -+#define SPI_CMD_CONTROL_IRQ BIT(1) -+ -+#define SPI_CMD_CODE_READ 4 -+#define SPI_CMD_CODE_WRITE 6 -+ -+#define SPI_CMD_STATUS_DONE BIT(0) -+#define SPI_CMD_STATUS_ERROR BIT(1) -+#define SPI_CMD_STATUS_BUSY BIT(3) -+ -+#define DMA_TX_CONTROL_SEND BIT(0) // cleared by device when sending is complete -+#define DMA_TX_CONTROL_IRQ BIT(3) -+ -+#define DMA_TX_STATUS_DONE BIT(0) -+#define DMA_TX_STATUS_ERROR BIT(1) -+#define DMA_TX_STATUS_UNKNOWN_2 BIT(2) -+#define DMA_TX_STATUS_UNKNOWN_3 BIT(3) // busy? -+ -+#define DMA_RX_CONTROL_ENABLE BIT(0) -+#define DMA_RX_CONTROL_IRQ_UNKNOWN_1 BIT(1) // rx1 only? -+#define DMA_RX_CONTROL_IRQ_ERROR BIT(3) // rx1 only? -+#define DMA_RX_CONTROL_IRQ_UNKNOWN_4 BIT(4) // rx0 only? -+#define DMA_RX_CONTROL_IRQ_DATA BIT(5) -+ -+#define DMA_RX_CONTROL2_UNKNOWN_5 BIT(5) // rx0 only? -+#define DMA_RX_CONTROL2_RESET BIT(7) // resets ringbuffer indices -+ -+#define DMA_RX_WRAP_FLAG BIT(7) -+ -+#define DMA_RX_STATUS_ERROR BIT(3) -+#define DMA_RX_STATUS_UNKNOWN_4 BIT(4) // set in rx0 after using CONTROL_NRESET when it becomes possible to read config (can take >100ms) -+#define DMA_RX_STATUS_HAVE_DATA BIT(5) -+#define DMA_RX_STATUS_ENABLED BIT(8) -+ -+#define COUNTER_RESET BIT(31) -+ -+struct ithc_registers { -+ /* 0000 */ u32 _unknown_0000[1024]; -+ /* 1000 */ u32 _unknown_1000; -+ /* 1004 */ u32 _unknown_1004; -+ /* 1008 */ u32 control_bits; -+ /* 100c */ u32 _unknown_100c; -+ /* 1010 */ u32 spi_config; -+ /* 1014 */ u32 _unknown_1014[3]; -+ /* 1020 */ u32 error_control; -+ /* 1024 */ u32 error_status; // write to clear -+ /* 1028 */ u32 error_flags; // write to clear -+ /* 102c */ u32 _unknown_102c[5]; -+ struct { -+ /* 1040 */ u8 control; -+ /* 1041 */ u8 code; -+ /* 1042 */ u16 size; -+ /* 1044 */ u32 status; // write to clear -+ /* 1048 */ u32 offset; -+ /* 104c */ u32 data[16]; -+ /* 108c */ u32 _unknown_108c; -+ } spi_cmd; -+ struct { -+ /* 1090 */ u64 addr; // cannot be written with writeq(), must use lo_hi_writeq() -+ /* 1098 */ u8 control; -+ /* 1099 */ u8 _unknown_1099; -+ /* 109a */ u8 _unknown_109a; -+ /* 109b */ u8 num_prds; -+ /* 109c */ u32 status; // write to clear -+ } dma_tx; -+ /* 10a0 */ u32 _unknown_10a0[7]; -+ /* 10bc */ u32 state; // is 0xe0000402 (dev config val 0) after CONTROL_NRESET, 0xe0000461 after first touch, 0xe0000401 after DMA_RX_CODE_RESET -+ /* 10c0 */ u32 _unknown_10c0[8]; -+ /* 10e0 */ u32 _unknown_10e0_counters[3]; -+ /* 10ec */ u32 _unknown_10ec[5]; -+ struct { -+ /* 1100/1200 */ u64 addr; // cannot be written with writeq(), must use lo_hi_writeq() -+ /* 1108/1208 */ u8 num_bufs; -+ /* 1109/1209 */ u8 num_prds; -+ /* 110a/120a */ u16 _unknown_110a; -+ /* 110c/120c */ u8 control; -+ /* 110d/120d */ u8 head; -+ /* 110e/120e */ u8 tail; -+ /* 110f/120f */ u8 control2; -+ /* 1110/1210 */ u32 status; // write to clear -+ /* 1114/1214 */ u32 _unknown_1114; -+ /* 1118/1218 */ u64 _unknown_1118_guc_addr; -+ /* 1120/1220 */ u32 _unknown_1120_guc; -+ /* 1124/1224 */ u32 _unknown_1124_guc; -+ /* 1128/1228 */ u32 unknown_init_bits; // bit 2 = guc related, bit 3 = rx1 related, bit 4 = guc related -+ /* 112c/122c */ u32 _unknown_112c; -+ /* 1130/1230 */ u64 _unknown_1130_guc_addr; -+ /* 1138/1238 */ u32 _unknown_1138_guc; -+ /* 113c/123c */ u32 _unknown_113c; -+ /* 1140/1240 */ u32 _unknown_1140_guc; -+ /* 1144/1244 */ u32 _unknown_1144[23]; -+ /* 11a0/12a0 */ u32 _unknown_11a0_counters[6]; -+ /* 11b8/12b8 */ u32 _unknown_11b8[18]; -+ } dma_rx[2]; -+}; -+static_assert(sizeof(struct ithc_registers) == 0x1300); -+ -+#define DEVCFG_DMA_RX_SIZE(x) ((((x) & 0x3fff) + 1) << 6) -+#define DEVCFG_DMA_TX_SIZE(x) (((((x) >> 14) & 0x3ff) + 1) << 6) -+ -+#define DEVCFG_TOUCH_MASK 0x3f -+#define DEVCFG_TOUCH_ENABLE BIT(0) -+#define DEVCFG_TOUCH_UNKNOWN_1 BIT(1) -+#define DEVCFG_TOUCH_UNKNOWN_2 BIT(2) -+#define DEVCFG_TOUCH_UNKNOWN_3 BIT(3) -+#define DEVCFG_TOUCH_UNKNOWN_4 BIT(4) -+#define DEVCFG_TOUCH_UNKNOWN_5 BIT(5) -+#define DEVCFG_TOUCH_UNKNOWN_6 BIT(6) -+ -+#define DEVCFG_DEVICE_ID_TIC 0x43495424 // "$TIC" -+ -+#define DEVCFG_SPI_MAX_FREQ(x) (((x) >> 1) & 0xf) // high bit = use high speed mode? -+#define DEVCFG_SPI_MODE(x) (((x) >> 6) & 3) -+#define DEVCFG_SPI_UNKNOWN_8(x) (((x) >> 8) & 0x3f) -+#define DEVCFG_SPI_NEEDS_HEARTBEAT BIT(20) -+#define DEVCFG_SPI_HEARTBEAT_INTERVAL (((x) >> 21) & 7) -+#define DEVCFG_SPI_UNKNOWN_25 BIT(25) -+#define DEVCFG_SPI_UNKNOWN_26 BIT(26) -+#define DEVCFG_SPI_UNKNOWN_27 BIT(27) -+#define DEVCFG_SPI_DELAY (((x) >> 28) & 7) -+#define DEVCFG_SPI_USE_EXT_READ_CFG BIT(31) -+ -+struct ithc_device_config { -+ u32 _unknown_00; // 00 = 0xe0000402 (0xe0000401 after DMA_RX_CODE_RESET) -+ u32 _unknown_04; // 04 = 0x00000000 -+ u32 dma_buf_sizes; // 08 = 0x000a00ff -+ u32 touch_cfg; // 0c = 0x0000001c -+ u32 _unknown_10; // 10 = 0x0000001c -+ u32 device_id; // 14 = 0x43495424 = "$TIC" -+ u32 spi_config; // 18 = 0xfda00a2e -+ u16 vendor_id; // 1c = 0x045e = Microsoft Corp. -+ u16 product_id; // 1e = 0x0c1a -+ u32 revision; // 20 = 0x00000001 -+ u32 fw_version; // 24 = 0x05008a8b = 5.0.138.139 -+ u32 _unknown_28; // 28 = 0x00000000 -+ u32 fw_mode; // 2c = 0x00000000 -+ u32 _unknown_30; // 30 = 0x00000000 -+ u32 _unknown_34; // 34 = 0x0404035e (u8,u8,u8,u8 = version?) -+ u32 _unknown_38; // 38 = 0x000001c0 (0x000001c1 after DMA_RX_CODE_RESET) -+ u32 _unknown_3c; // 3c = 0x00000002 -+}; -+ -+void bitsl(__iomem u32 *reg, u32 mask, u32 val); -+void bitsb(__iomem u8 *reg, u8 mask, u8 val); -+#define bitsl_set(reg, x) bitsl(reg, x, x) -+#define bitsb_set(reg, x) bitsb(reg, x, x) -+int waitl(struct ithc *ithc, __iomem u32 *reg, u32 mask, u32 val); -+int waitb(struct ithc *ithc, __iomem u8 *reg, u8 mask, u8 val); -+int ithc_set_spi_config(struct ithc *ithc, u8 speed, u8 mode); -+int ithc_spi_command(struct ithc *ithc, u8 command, u32 offset, u32 size, void *data); -+ -diff --git a/drivers/hid/ithc/ithc.h b/drivers/hid/ithc/ithc.h -new file mode 100644 -index 000000000000..6a9b0d480bc1 ---- /dev/null -+++ b/drivers/hid/ithc/ithc.h -@@ -0,0 +1,60 @@ -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#define DEVNAME "ithc" -+#define DEVFULLNAME "Intel Touch Host Controller" -+ -+#undef pr_fmt -+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -+ -+#define CHECK(fn, ...) ({ int r = fn(__VA_ARGS__); if (r < 0) pci_err(ithc->pci, "%s: %s failed with %i\n", __func__, #fn, r); r; }) -+#define CHECK_RET(...) do { int r = CHECK(__VA_ARGS__); if (r < 0) return r; } while(0) -+ -+#define NUM_RX_BUF 16 -+ -+struct ithc; -+ -+#include "ithc-regs.h" -+#include "ithc-dma.h" -+ -+struct ithc { -+ char phys[32]; -+ struct pci_dev *pci; -+ int irq; -+ struct task_struct *poll_thread; -+ struct pm_qos_request activity_qos; -+ struct timer_list activity_timer; -+ -+ struct hid_device *hid; -+ bool hid_parse_done; -+ wait_queue_head_t wait_hid_parse; -+ wait_queue_head_t wait_hid_get_feature; -+ struct mutex hid_get_feature_mutex; -+ void *hid_get_feature_buf; -+ size_t hid_get_feature_size; -+ -+ struct ithc_registers __iomem *regs; -+ struct ithc_registers *prev_regs; // for debugging -+ struct ithc_device_config config; -+ struct ithc_dma_rx dma_rx[2]; -+ struct ithc_dma_tx dma_tx; -+}; -+ -+int ithc_reset(struct ithc *ithc); -+void ithc_set_active(struct ithc *ithc); -+int ithc_debug_init(struct ithc *ithc); -+void ithc_log_regs(struct ithc *ithc); -+ --- -2.42.0 - diff --git a/patches/6.4/0006-surface-sam-over-hid.patch b/patches/6.4/0006-surface-sam-over-hid.patch deleted file mode 100644 index 3d1d07665..000000000 --- a/patches/6.4/0006-surface-sam-over-hid.patch +++ /dev/null @@ -1,335 +0,0 @@ -From e3016490e738dabb8cad5ff542b97d05fff6c63e Mon Sep 17 00:00:00 2001 -From: Maximilian Luz -Date: Sat, 25 Jul 2020 17:19:53 +0200 -Subject: [PATCH] i2c: acpi: Implement RawBytes read access - -Microsoft Surface Pro 4 and Book 1 devices access the MSHW0030 I2C -device via a generic serial bus operation region and RawBytes read -access. On the Surface Book 1, this access is required to turn on (and -off) the discrete GPU. - -Multiple things are to note here: - -a) The RawBytes access is device/driver dependent. The ACPI - specification states: - - > Raw accesses assume that the writer has knowledge of the bus that - > the access is made over and the device that is being accessed. The - > protocol may only ensure that the buffer is transmitted to the - > appropriate driver, but the driver must be able to interpret the - > buffer to communicate to a register. - - Thus this implementation may likely not work on other devices - accessing I2C via the RawBytes accessor type. - -b) The MSHW0030 I2C device is an HID-over-I2C device which seems to - serve multiple functions: - - 1. It is the main access point for the legacy-type Surface Aggregator - Module (also referred to as SAM-over-HID, as opposed to the newer - SAM-over-SSH/UART). It has currently not been determined on how - support for the legacy SAM should be implemented. Likely via a - custom HID driver. - - 2. It seems to serve as the HID device for the Integrated Sensor Hub. - This might complicate matters with regards to implementing a - SAM-over-HID driver required by legacy SAM. - -In light of this, the simplest approach has been chosen for now. -However, it may make more sense regarding breakage and compatibility to -either provide functionality for replacing or enhancing the default -operation region handler via some additional API functions, or even to -completely blacklist MSHW0030 from the I2C core and provide a custom -driver for it. - -Replacing/enhancing the default operation region handler would, however, -either require some sort of secondary driver and access point for it, -from which the new API functions would be called and the new handler -(part) would be installed, or hard-coding them via some sort of -quirk-like interface into the I2C core. - -Signed-off-by: Maximilian Luz -Patchset: surface-sam-over-hid ---- - drivers/i2c/i2c-core-acpi.c | 35 +++++++++++++++++++++++++++++++++++ - 1 file changed, 35 insertions(+) - -diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c -index d6037a328669..a290ebc77aea 100644 ---- a/drivers/i2c/i2c-core-acpi.c -+++ b/drivers/i2c/i2c-core-acpi.c -@@ -628,6 +628,28 @@ static int acpi_gsb_i2c_write_bytes(struct i2c_client *client, - return (ret == 1) ? 0 : -EIO; - } - -+static int acpi_gsb_i2c_write_raw_bytes(struct i2c_client *client, -+ u8 *data, u8 data_len) -+{ -+ struct i2c_msg msgs[1]; -+ int ret = AE_OK; -+ -+ msgs[0].addr = client->addr; -+ msgs[0].flags = client->flags; -+ msgs[0].len = data_len + 1; -+ msgs[0].buf = data; -+ -+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); -+ -+ if (ret < 0) { -+ dev_err(&client->adapter->dev, "i2c write failed: %d\n", ret); -+ return ret; -+ } -+ -+ /* 1 transfer must have completed successfully */ -+ return (ret == 1) ? 0 : -EIO; -+} -+ - static acpi_status - i2c_acpi_space_handler(u32 function, acpi_physical_address command, - u32 bits, u64 *value64, -@@ -729,6 +751,19 @@ i2c_acpi_space_handler(u32 function, acpi_physical_address command, - } - break; - -+ case ACPI_GSB_ACCESS_ATTRIB_RAW_BYTES: -+ if (action == ACPI_READ) { -+ dev_warn(&adapter->dev, -+ "protocol 0x%02x not supported for client 0x%02x\n", -+ accessor_type, client->addr); -+ ret = AE_BAD_PARAMETER; -+ goto err; -+ } else { -+ status = acpi_gsb_i2c_write_raw_bytes(client, -+ gsb->data, info->access_length); -+ } -+ break; -+ - default: - dev_warn(&adapter->dev, "protocol 0x%02x not supported for client 0x%02x\n", - accessor_type, client->addr); --- -2.42.0 - -From eb26a92e146a575944fd75899cb860de7f6d86a7 Mon Sep 17 00:00:00 2001 -From: Maximilian Luz -Date: Sat, 13 Feb 2021 16:41:18 +0100 -Subject: [PATCH] platform/surface: Add driver for Surface Book 1 dGPU switch - -Add driver exposing the discrete GPU power-switch of the Microsoft -Surface Book 1 to user-space. - -On the Surface Book 1, the dGPU power is controlled via the Surface -System Aggregator Module (SAM). The specific SAM-over-HID command for -this is exposed via ACPI. This module provides a simple driver exposing -the ACPI call via a sysfs parameter to user-space, so that users can -easily power-on/-off the dGPU. - -Patchset: surface-sam-over-hid ---- - drivers/platform/surface/Kconfig | 7 + - drivers/platform/surface/Makefile | 1 + - .../surface/surfacebook1_dgpu_switch.c | 162 ++++++++++++++++++ - 3 files changed, 170 insertions(+) - create mode 100644 drivers/platform/surface/surfacebook1_dgpu_switch.c - -diff --git a/drivers/platform/surface/Kconfig b/drivers/platform/surface/Kconfig -index b629e82af97c..68656e8f309e 100644 ---- a/drivers/platform/surface/Kconfig -+++ b/drivers/platform/surface/Kconfig -@@ -149,6 +149,13 @@ config SURFACE_AGGREGATOR_TABLET_SWITCH - Select M or Y here, if you want to provide tablet-mode switch input - events on the Surface Pro 8, Surface Pro X, and Surface Laptop Studio. - -+config SURFACE_BOOK1_DGPU_SWITCH -+ tristate "Surface Book 1 dGPU Switch Driver" -+ depends on SYSFS -+ help -+ This driver provides a sysfs switch to set the power-state of the -+ discrete GPU found on the Microsoft Surface Book 1. -+ - config SURFACE_DTX - tristate "Surface DTX (Detachment System) Driver" - depends on SURFACE_AGGREGATOR -diff --git a/drivers/platform/surface/Makefile b/drivers/platform/surface/Makefile -index 53344330939b..7efcd0cdb532 100644 ---- a/drivers/platform/surface/Makefile -+++ b/drivers/platform/surface/Makefile -@@ -12,6 +12,7 @@ obj-$(CONFIG_SURFACE_AGGREGATOR_CDEV) += surface_aggregator_cdev.o - obj-$(CONFIG_SURFACE_AGGREGATOR_HUB) += surface_aggregator_hub.o - obj-$(CONFIG_SURFACE_AGGREGATOR_REGISTRY) += surface_aggregator_registry.o - obj-$(CONFIG_SURFACE_AGGREGATOR_TABLET_SWITCH) += surface_aggregator_tabletsw.o -+obj-$(CONFIG_SURFACE_BOOK1_DGPU_SWITCH) += surfacebook1_dgpu_switch.o - obj-$(CONFIG_SURFACE_DTX) += surface_dtx.o - obj-$(CONFIG_SURFACE_GPE) += surface_gpe.o - obj-$(CONFIG_SURFACE_HOTPLUG) += surface_hotplug.o -diff --git a/drivers/platform/surface/surfacebook1_dgpu_switch.c b/drivers/platform/surface/surfacebook1_dgpu_switch.c -new file mode 100644 -index 000000000000..8b816ed8f35c ---- /dev/null -+++ b/drivers/platform/surface/surfacebook1_dgpu_switch.c -@@ -0,0 +1,162 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+ -+#include -+#include -+#include -+#include -+ -+ -+#ifdef pr_fmt -+#undef pr_fmt -+#endif -+#define pr_fmt(fmt) "%s:%s: " fmt, KBUILD_MODNAME, __func__ -+ -+ -+static const guid_t dgpu_sw_guid = GUID_INIT(0x6fd05c69, 0xcde3, 0x49f4, -+ 0x95, 0xed, 0xab, 0x16, 0x65, 0x49, 0x80, 0x35); -+ -+#define DGPUSW_ACPI_PATH_DSM "\\_SB_.PCI0.LPCB.EC0_.VGBI" -+#define DGPUSW_ACPI_PATH_HGON "\\_SB_.PCI0.RP05.HGON" -+#define DGPUSW_ACPI_PATH_HGOF "\\_SB_.PCI0.RP05.HGOF" -+ -+ -+static int sb1_dgpu_sw_dsmcall(void) -+{ -+ union acpi_object *ret; -+ acpi_handle handle; -+ acpi_status status; -+ -+ status = acpi_get_handle(NULL, DGPUSW_ACPI_PATH_DSM, &handle); -+ if (status) -+ return -EINVAL; -+ -+ ret = acpi_evaluate_dsm_typed(handle, &dgpu_sw_guid, 1, 1, NULL, ACPI_TYPE_BUFFER); -+ if (!ret) -+ return -EINVAL; -+ -+ ACPI_FREE(ret); -+ return 0; -+} -+ -+static int sb1_dgpu_sw_hgon(void) -+{ -+ struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL}; -+ acpi_status status; -+ -+ status = acpi_evaluate_object(NULL, DGPUSW_ACPI_PATH_HGON, NULL, &buf); -+ if (status) { -+ pr_err("failed to run HGON: %d\n", status); -+ return -EINVAL; -+ } -+ -+ if (buf.pointer) -+ ACPI_FREE(buf.pointer); -+ -+ pr_info("turned-on dGPU via HGON\n"); -+ return 0; -+} -+ -+static int sb1_dgpu_sw_hgof(void) -+{ -+ struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL}; -+ acpi_status status; -+ -+ status = acpi_evaluate_object(NULL, DGPUSW_ACPI_PATH_HGOF, NULL, &buf); -+ if (status) { -+ pr_err("failed to run HGOF: %d\n", status); -+ return -EINVAL; -+ } -+ -+ if (buf.pointer) -+ ACPI_FREE(buf.pointer); -+ -+ pr_info("turned-off dGPU via HGOF\n"); -+ return 0; -+} -+ -+ -+static ssize_t dgpu_dsmcall_store(struct device *dev, struct device_attribute *attr, -+ const char *buf, size_t len) -+{ -+ int status, value; -+ -+ status = kstrtoint(buf, 0, &value); -+ if (status < 0) -+ return status; -+ -+ if (value != 1) -+ return -EINVAL; -+ -+ status = sb1_dgpu_sw_dsmcall(); -+ -+ return status < 0 ? status : len; -+} -+ -+static ssize_t dgpu_power_store(struct device *dev, struct device_attribute *attr, -+ const char *buf, size_t len) -+{ -+ bool power; -+ int status; -+ -+ status = kstrtobool(buf, &power); -+ if (status < 0) -+ return status; -+ -+ if (power) -+ status = sb1_dgpu_sw_hgon(); -+ else -+ status = sb1_dgpu_sw_hgof(); -+ -+ return status < 0 ? status : len; -+} -+ -+static DEVICE_ATTR_WO(dgpu_dsmcall); -+static DEVICE_ATTR_WO(dgpu_power); -+ -+static struct attribute *sb1_dgpu_sw_attrs[] = { -+ &dev_attr_dgpu_dsmcall.attr, -+ &dev_attr_dgpu_power.attr, -+ NULL, -+}; -+ -+static const struct attribute_group sb1_dgpu_sw_attr_group = { -+ .attrs = sb1_dgpu_sw_attrs, -+}; -+ -+ -+static int sb1_dgpu_sw_probe(struct platform_device *pdev) -+{ -+ return sysfs_create_group(&pdev->dev.kobj, &sb1_dgpu_sw_attr_group); -+} -+ -+static int sb1_dgpu_sw_remove(struct platform_device *pdev) -+{ -+ sysfs_remove_group(&pdev->dev.kobj, &sb1_dgpu_sw_attr_group); -+ return 0; -+} -+ -+/* -+ * The dGPU power seems to be actually handled by MSHW0040. However, that is -+ * also the power-/volume-button device with a mainline driver. So let's use -+ * MSHW0041 instead for now, which seems to be the LTCH (latch/DTX) device. -+ */ -+static const struct acpi_device_id sb1_dgpu_sw_match[] = { -+ { "MSHW0041", }, -+ { }, -+}; -+MODULE_DEVICE_TABLE(acpi, sb1_dgpu_sw_match); -+ -+static struct platform_driver sb1_dgpu_sw = { -+ .probe = sb1_dgpu_sw_probe, -+ .remove = sb1_dgpu_sw_remove, -+ .driver = { -+ .name = "surfacebook1_dgpu_switch", -+ .acpi_match_table = sb1_dgpu_sw_match, -+ .probe_type = PROBE_PREFER_ASYNCHRONOUS, -+ }, -+}; -+module_platform_driver(sb1_dgpu_sw); -+ -+MODULE_AUTHOR("Maximilian Luz "); -+MODULE_DESCRIPTION("Discrete GPU Power-Switch for Surface Book 1"); -+MODULE_LICENSE("GPL"); --- -2.42.0 - diff --git a/patches/6.4/0007-surface-button.patch b/patches/6.4/0007-surface-button.patch deleted file mode 100644 index 1df75c847..000000000 --- a/patches/6.4/0007-surface-button.patch +++ /dev/null @@ -1,149 +0,0 @@ -From 5c4b82f566f9abf7918305292626ee033395477a Mon Sep 17 00:00:00 2001 -From: Sachi King -Date: Tue, 5 Oct 2021 00:05:09 +1100 -Subject: [PATCH] Input: soc_button_array - support AMD variant Surface devices - -The power button on the AMD variant of the Surface Laptop uses the -same MSHW0040 device ID as the 5th and later generation of Surface -devices, however they report 0 for their OEM platform revision. As the -_DSM does not exist on the devices requiring special casing, check for -the existance of the _DSM to determine if soc_button_array should be -loaded. - -Fixes: c394159310d0 ("Input: soc_button_array - add support for newer surface devices") -Co-developed-by: Maximilian Luz - -Signed-off-by: Sachi King -Patchset: surface-button ---- - drivers/input/misc/soc_button_array.c | 33 +++++++-------------------- - 1 file changed, 8 insertions(+), 25 deletions(-) - -diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c -index e79f5497948b..2bddbe6e9ea4 100644 ---- a/drivers/input/misc/soc_button_array.c -+++ b/drivers/input/misc/soc_button_array.c -@@ -537,8 +537,8 @@ static const struct soc_device_data soc_device_MSHW0028 = { - * Both, the Surface Pro 4 (surfacepro3_button.c) and the above mentioned - * devices use MSHW0040 for power and volume buttons, however the way they - * have to be addressed differs. Make sure that we only load this drivers -- * for the correct devices by checking the OEM Platform Revision provided by -- * the _DSM method. -+ * for the correct devices by checking if the OEM Platform Revision DSM call -+ * exists. - */ - #define MSHW0040_DSM_REVISION 0x01 - #define MSHW0040_DSM_GET_OMPR 0x02 // get OEM Platform Revision -@@ -549,31 +549,14 @@ static const guid_t MSHW0040_DSM_UUID = - static int soc_device_check_MSHW0040(struct device *dev) - { - acpi_handle handle = ACPI_HANDLE(dev); -- union acpi_object *result; -- u64 oem_platform_rev = 0; // valid revisions are nonzero -- -- // get OEM platform revision -- result = acpi_evaluate_dsm_typed(handle, &MSHW0040_DSM_UUID, -- MSHW0040_DSM_REVISION, -- MSHW0040_DSM_GET_OMPR, NULL, -- ACPI_TYPE_INTEGER); -- -- if (result) { -- oem_platform_rev = result->integer.value; -- ACPI_FREE(result); -- } -- -- /* -- * If the revision is zero here, the _DSM evaluation has failed. This -- * indicates that we have a Pro 4 or Book 1 and this driver should not -- * be used. -- */ -- if (oem_platform_rev == 0) -- return -ENODEV; -+ bool exists; - -- dev_dbg(dev, "OEM Platform Revision %llu\n", oem_platform_rev); -+ // check if OEM platform revision DSM call exists -+ exists = acpi_check_dsm(handle, &MSHW0040_DSM_UUID, -+ MSHW0040_DSM_REVISION, -+ BIT(MSHW0040_DSM_GET_OMPR)); - -- return 0; -+ return exists ? 0 : -ENODEV; - } - - /* --- -2.42.0 - -From 4567303193e8334c5017af6b36f9ad22a8875470 Mon Sep 17 00:00:00 2001 -From: Sachi King -Date: Tue, 5 Oct 2021 00:22:57 +1100 -Subject: [PATCH] platform/surface: surfacepro3_button: don't load on amd - variant - -The AMD variant of the Surface Laptop report 0 for their OEM platform -revision. The Surface devices that require the surfacepro3_button -driver do not have the _DSM that gets the OEM platform revision. If the -method does not exist, load surfacepro3_button. - -Fixes: 64dd243d7356 ("platform/x86: surfacepro3_button: Fix device check") -Co-developed-by: Maximilian Luz - -Signed-off-by: Sachi King -Patchset: surface-button ---- - drivers/platform/surface/surfacepro3_button.c | 30 ++++--------------- - 1 file changed, 6 insertions(+), 24 deletions(-) - -diff --git a/drivers/platform/surface/surfacepro3_button.c b/drivers/platform/surface/surfacepro3_button.c -index 2755601f979c..4240c98ca226 100644 ---- a/drivers/platform/surface/surfacepro3_button.c -+++ b/drivers/platform/surface/surfacepro3_button.c -@@ -149,7 +149,8 @@ static int surface_button_resume(struct device *dev) - /* - * Surface Pro 4 and Surface Book 2 / Surface Pro 2017 use the same device - * ID (MSHW0040) for the power/volume buttons. Make sure this is the right -- * device by checking for the _DSM method and OEM Platform Revision. -+ * device by checking for the _DSM method and OEM Platform Revision DSM -+ * function. - * - * Returns true if the driver should bind to this device, i.e. the device is - * either MSWH0028 (Pro 3) or MSHW0040 on a Pro 4 or Book 1. -@@ -157,30 +158,11 @@ static int surface_button_resume(struct device *dev) - static bool surface_button_check_MSHW0040(struct acpi_device *dev) - { - acpi_handle handle = dev->handle; -- union acpi_object *result; -- u64 oem_platform_rev = 0; // valid revisions are nonzero -- -- // get OEM platform revision -- result = acpi_evaluate_dsm_typed(handle, &MSHW0040_DSM_UUID, -- MSHW0040_DSM_REVISION, -- MSHW0040_DSM_GET_OMPR, -- NULL, ACPI_TYPE_INTEGER); -- -- /* -- * If evaluating the _DSM fails, the method is not present. This means -- * that we have either MSHW0028 or MSHW0040 on Pro 4 or Book 1, so we -- * should use this driver. We use revision 0 indicating it is -- * unavailable. -- */ -- -- if (result) { -- oem_platform_rev = result->integer.value; -- ACPI_FREE(result); -- } -- -- dev_dbg(&dev->dev, "OEM Platform Revision %llu\n", oem_platform_rev); - -- return oem_platform_rev == 0; -+ // make sure that OEM platform revision DSM call does not exist -+ return !acpi_check_dsm(handle, &MSHW0040_DSM_UUID, -+ MSHW0040_DSM_REVISION, -+ BIT(MSHW0040_DSM_GET_OMPR)); - } - - --- -2.42.0 - diff --git a/patches/6.4/0008-surface-typecover.patch b/patches/6.4/0008-surface-typecover.patch deleted file mode 100644 index 6560ab356..000000000 --- a/patches/6.4/0008-surface-typecover.patch +++ /dev/null @@ -1,574 +0,0 @@ -From 93a283b21122dae68ece3fef3790b0736fe92e5d Mon Sep 17 00:00:00 2001 -From: Maximilian Luz -Date: Sat, 18 Feb 2023 01:02:49 +0100 -Subject: [PATCH] USB: quirks: Add USB_QUIRK_DELAY_INIT for Surface Go 3 - Type-Cover - -The touchpad on the Type-Cover of the Surface Go 3 is sometimes not -being initialized properly. Apply USB_QUIRK_DELAY_INIT to fix this -issue. - -More specifically, the device in question is a fairly standard modern -touchpad with pointer and touchpad input modes. During setup, the device -needs to be switched from pointer- to touchpad-mode (which is done in -hid-multitouch) to fully utilize it as intended. Unfortunately, however, -this seems to occasionally fail silently, leaving the device in -pointer-mode. Applying USB_QUIRK_DELAY_INIT seems to fix this. - -Link: https://github.com/linux-surface/linux-surface/issues/1059 -Signed-off-by: Maximilian Luz -Patchset: surface-typecover ---- - drivers/usb/core/quirks.c | 3 +++ - 1 file changed, 3 insertions(+) - -diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c -index 15e9bd180a1d..0d70461d01e1 100644 ---- a/drivers/usb/core/quirks.c -+++ b/drivers/usb/core/quirks.c -@@ -220,6 +220,9 @@ static const struct usb_device_id usb_quirk_list[] = { - /* Microsoft Surface Dock Ethernet (RTL8153 GigE) */ - { USB_DEVICE(0x045e, 0x07c6), .driver_info = USB_QUIRK_NO_LPM }, - -+ /* Microsoft Surface Go 3 Type-Cover */ -+ { USB_DEVICE(0x045e, 0x09b5), .driver_info = USB_QUIRK_DELAY_INIT }, -+ - /* Cherry Stream G230 2.0 (G85-231) and 3.0 (G85-232) */ - { USB_DEVICE(0x046a, 0x0023), .driver_info = USB_QUIRK_RESET_RESUME }, - --- -2.42.0 - -From 0f829b3d21f87353ddf9b03b4203e66745291cb7 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= -Date: Thu, 5 Nov 2020 13:09:45 +0100 -Subject: [PATCH] hid/multitouch: Turn off Type Cover keyboard backlight when - suspending - -The Type Cover for Microsoft Surface devices supports a special usb -control request to disable or enable the built-in keyboard backlight. -On Windows, this request happens when putting the device into suspend or -resuming it, without it the backlight of the Type Cover will remain -enabled for some time even though the computer is suspended, which looks -weird to the user. - -So add support for this special usb control request to hid-multitouch, -which is the driver that's handling the Type Cover. - -The reason we have to use a pm_notifier for this instead of the usual -suspend/resume methods is that those won't get called in case the usb -device is already autosuspended. - -Also, if the device is autosuspended, we have to briefly autoresume it -in order to send the request. Doing that should be fine, the usb-core -driver does something similar during suspend inside choose_wakeup(). - -To make sure we don't send that request to every device but only to -devices which support it, add a new quirk -MT_CLS_WIN_8_MS_SURFACE_TYPE_COVER to hid-multitouch. For now this quirk -is only enabled for the usb id of the Surface Pro 2017 Type Cover, which -is where I confirmed that it's working. - -Patchset: surface-typecover ---- - drivers/hid/hid-multitouch.c | 100 ++++++++++++++++++++++++++++++++++- - 1 file changed, 98 insertions(+), 2 deletions(-) - -diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c -index 521b2ffb4244..c8f3d05c8866 100644 ---- a/drivers/hid/hid-multitouch.c -+++ b/drivers/hid/hid-multitouch.c -@@ -34,7 +34,10 @@ - #include - #include - #include -+#include - #include -+#include -+#include - #include - #include - #include -@@ -47,6 +50,7 @@ MODULE_DESCRIPTION("HID multitouch panels"); - MODULE_LICENSE("GPL"); - - #include "hid-ids.h" -+#include "usbhid/usbhid.h" - - /* quirks to control the device */ - #define MT_QUIRK_NOT_SEEN_MEANS_UP BIT(0) -@@ -72,12 +76,15 @@ MODULE_LICENSE("GPL"); - #define MT_QUIRK_FORCE_MULTI_INPUT BIT(20) - #define MT_QUIRK_DISABLE_WAKEUP BIT(21) - #define MT_QUIRK_ORIENTATION_INVERT BIT(22) -+#define MT_QUIRK_HAS_TYPE_COVER_BACKLIGHT BIT(23) - - #define MT_INPUTMODE_TOUCHSCREEN 0x02 - #define MT_INPUTMODE_TOUCHPAD 0x03 - - #define MT_BUTTONTYPE_CLICKPAD 0 - -+#define MS_TYPE_COVER_FEATURE_REPORT_USAGE 0xff050086 -+ - enum latency_mode { - HID_LATENCY_NORMAL = 0, - HID_LATENCY_HIGH = 1, -@@ -169,6 +176,8 @@ struct mt_device { - - struct list_head applications; - struct list_head reports; -+ -+ struct notifier_block pm_notifier; - }; - - static void mt_post_parse_default_settings(struct mt_device *td, -@@ -213,6 +222,7 @@ static void mt_post_parse(struct mt_device *td, struct mt_application *app); - #define MT_CLS_GOOGLE 0x0111 - #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 - #define MT_CLS_SMART_TECH 0x0113 -+#define MT_CLS_WIN_8_MS_SURFACE_TYPE_COVER 0x0114 - - #define MT_DEFAULT_MAXCONTACT 10 - #define MT_MAX_MAXCONTACT 250 -@@ -397,6 +407,16 @@ static const struct mt_class mt_classes[] = { - MT_QUIRK_CONTACT_CNT_ACCURATE | - MT_QUIRK_SEPARATE_APP_REPORT, - }, -+ { .name = MT_CLS_WIN_8_MS_SURFACE_TYPE_COVER, -+ .quirks = MT_QUIRK_HAS_TYPE_COVER_BACKLIGHT | -+ MT_QUIRK_ALWAYS_VALID | -+ MT_QUIRK_IGNORE_DUPLICATES | -+ MT_QUIRK_HOVERING | -+ MT_QUIRK_CONTACT_CNT_ACCURATE | -+ MT_QUIRK_STICKY_FINGERS | -+ MT_QUIRK_WIN8_PTP_BUTTONS, -+ .export_all_inputs = true -+ }, - { } - }; - -@@ -1721,6 +1741,69 @@ static void mt_expired_timeout(struct timer_list *t) - clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); - } - -+static void get_type_cover_backlight_field(struct hid_device *hdev, -+ struct hid_field **field) -+{ -+ struct hid_report_enum *rep_enum; -+ struct hid_report *rep; -+ struct hid_field *cur_field; -+ int i, j; -+ -+ rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; -+ list_for_each_entry(rep, &rep_enum->report_list, list) { -+ for (i = 0; i < rep->maxfield; i++) { -+ cur_field = rep->field[i]; -+ -+ for (j = 0; j < cur_field->maxusage; j++) { -+ if (cur_field->usage[j].hid -+ == MS_TYPE_COVER_FEATURE_REPORT_USAGE) { -+ *field = cur_field; -+ return; -+ } -+ } -+ } -+ } -+} -+ -+static void update_keyboard_backlight(struct hid_device *hdev, bool enabled) -+{ -+ struct usb_device *udev = hid_to_usb_dev(hdev); -+ struct hid_field *field = NULL; -+ -+ /* Wake up the device in case it's already suspended */ -+ pm_runtime_get_sync(&udev->dev); -+ -+ get_type_cover_backlight_field(hdev, &field); -+ if (!field) { -+ hid_err(hdev, "couldn't find backlight field\n"); -+ goto out; -+ } -+ -+ field->value[field->index] = enabled ? 0x01ff00ff : 0x00ff00ff; -+ hid_hw_request(hdev, field->report, HID_REQ_SET_REPORT); -+ -+out: -+ pm_runtime_put_sync(&udev->dev); -+} -+ -+static int mt_pm_notifier(struct notifier_block *notifier, -+ unsigned long pm_event, -+ void *unused) -+{ -+ struct mt_device *td = -+ container_of(notifier, struct mt_device, pm_notifier); -+ struct hid_device *hdev = td->hdev; -+ -+ if (td->mtclass.quirks & MT_QUIRK_HAS_TYPE_COVER_BACKLIGHT) { -+ if (pm_event == PM_SUSPEND_PREPARE) -+ update_keyboard_backlight(hdev, 0); -+ else if (pm_event == PM_POST_SUSPEND) -+ update_keyboard_backlight(hdev, 1); -+ } -+ -+ return NOTIFY_DONE; -+} -+ - static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) - { - int ret, i; -@@ -1744,6 +1827,9 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) - td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN; - hid_set_drvdata(hdev, td); - -+ td->pm_notifier.notifier_call = mt_pm_notifier; -+ register_pm_notifier(&td->pm_notifier); -+ - INIT_LIST_HEAD(&td->applications); - INIT_LIST_HEAD(&td->reports); - -@@ -1782,15 +1868,19 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) - timer_setup(&td->release_timer, mt_expired_timeout, 0); - - ret = hid_parse(hdev); -- if (ret != 0) -+ if (ret != 0) { -+ unregister_pm_notifier(&td->pm_notifier); - return ret; -+ } - - if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID) - mt_fix_const_fields(hdev, HID_DG_CONTACTID); - - ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); -- if (ret) -+ if (ret) { -+ unregister_pm_notifier(&td->pm_notifier); - return ret; -+ } - - ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); - if (ret) -@@ -1842,6 +1932,7 @@ static void mt_remove(struct hid_device *hdev) - { - struct mt_device *td = hid_get_drvdata(hdev); - -+ unregister_pm_notifier(&td->pm_notifier); - del_timer_sync(&td->release_timer); - - sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); -@@ -2219,6 +2310,11 @@ static const struct hid_device_id mt_devices[] = { - MT_USB_DEVICE(USB_VENDOR_ID_XIROKU, - USB_DEVICE_ID_XIROKU_CSR2) }, - -+ /* Microsoft Surface type cover */ -+ { .driver_data = MT_CLS_WIN_8_MS_SURFACE_TYPE_COVER, -+ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, -+ USB_VENDOR_ID_MICROSOFT, 0x09c0) }, -+ - /* Google MT devices */ - { .driver_data = MT_CLS_GOOGLE, - HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE, --- -2.42.0 - -From 91e26c96736b4c4972fe26660bfc15badecdb633 Mon Sep 17 00:00:00 2001 -From: PJungkamp -Date: Fri, 25 Feb 2022 12:04:25 +0100 -Subject: [PATCH] hid/multitouch: Add support for surface pro type cover tablet - switch - -The Surface Pro Type Cover has several non standard HID usages in it's -hid report descriptor. -I noticed that, upon folding the typecover back, a vendor specific range -of 4 32 bit integer hid usages is transmitted. -Only the first byte of the message seems to convey reliable information -about the keyboard state. - -0x22 => Normal (keys enabled) -0x33 => Folded back (keys disabled) -0x53 => Rotated left/right side up (keys disabled) -0x13 => Cover closed (keys disabled) -0x43 => Folded back and Tablet upside down (keys disabled) -This list may not be exhaustive. - -The tablet mode switch will be disabled for a value of 0x22 and enabled -on any other value. - -Patchset: surface-typecover ---- - drivers/hid/hid-multitouch.c | 148 +++++++++++++++++++++++++++++------ - 1 file changed, 122 insertions(+), 26 deletions(-) - -diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c -index c8f3d05c8866..1c6e4d66e762 100644 ---- a/drivers/hid/hid-multitouch.c -+++ b/drivers/hid/hid-multitouch.c -@@ -77,6 +77,7 @@ MODULE_LICENSE("GPL"); - #define MT_QUIRK_DISABLE_WAKEUP BIT(21) - #define MT_QUIRK_ORIENTATION_INVERT BIT(22) - #define MT_QUIRK_HAS_TYPE_COVER_BACKLIGHT BIT(23) -+#define MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH BIT(24) - - #define MT_INPUTMODE_TOUCHSCREEN 0x02 - #define MT_INPUTMODE_TOUCHPAD 0x03 -@@ -84,6 +85,8 @@ MODULE_LICENSE("GPL"); - #define MT_BUTTONTYPE_CLICKPAD 0 - - #define MS_TYPE_COVER_FEATURE_REPORT_USAGE 0xff050086 -+#define MS_TYPE_COVER_TABLET_MODE_SWITCH_USAGE 0xff050072 -+#define MS_TYPE_COVER_APPLICATION 0xff050050 - - enum latency_mode { - HID_LATENCY_NORMAL = 0, -@@ -409,6 +412,7 @@ static const struct mt_class mt_classes[] = { - }, - { .name = MT_CLS_WIN_8_MS_SURFACE_TYPE_COVER, - .quirks = MT_QUIRK_HAS_TYPE_COVER_BACKLIGHT | -+ MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH | - MT_QUIRK_ALWAYS_VALID | - MT_QUIRK_IGNORE_DUPLICATES | - MT_QUIRK_HOVERING | -@@ -1390,6 +1394,9 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, - field->application != HID_CP_CONSUMER_CONTROL && - field->application != HID_GD_WIRELESS_RADIO_CTLS && - field->application != HID_GD_SYSTEM_MULTIAXIS && -+ !(field->application == MS_TYPE_COVER_APPLICATION && -+ application->quirks & MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH && -+ usage->hid == MS_TYPE_COVER_TABLET_MODE_SWITCH_USAGE) && - !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && - application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) - return -1; -@@ -1417,6 +1424,21 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, - return 1; - } - -+ /* -+ * The Microsoft Surface Pro Typecover has a non-standard HID -+ * tablet mode switch on a vendor specific usage page with vendor -+ * specific usage. -+ */ -+ if (field->application == MS_TYPE_COVER_APPLICATION && -+ application->quirks & MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH && -+ usage->hid == MS_TYPE_COVER_TABLET_MODE_SWITCH_USAGE) { -+ usage->type = EV_SW; -+ usage->code = SW_TABLET_MODE; -+ *max = SW_MAX; -+ *bit = hi->input->swbit; -+ return 1; -+ } -+ - if (rdata->is_mt_collection) - return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, - application); -@@ -1438,6 +1460,7 @@ static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, - { - struct mt_device *td = hid_get_drvdata(hdev); - struct mt_report_data *rdata; -+ struct input_dev *input; - - rdata = mt_find_report_data(td, field->report); - if (rdata && rdata->is_mt_collection) { -@@ -1445,6 +1468,19 @@ static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, - return -1; - } - -+ /* -+ * We own an input device which acts as a tablet mode switch for -+ * the Surface Pro Typecover. -+ */ -+ if (field->application == MS_TYPE_COVER_APPLICATION && -+ rdata->application->quirks & MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH && -+ usage->hid == MS_TYPE_COVER_TABLET_MODE_SWITCH_USAGE) { -+ input = hi->input; -+ input_set_capability(input, EV_SW, SW_TABLET_MODE); -+ input_report_switch(input, SW_TABLET_MODE, 0); -+ return -1; -+ } -+ - /* let hid-core decide for the others */ - return 0; - } -@@ -1454,11 +1490,21 @@ static int mt_event(struct hid_device *hid, struct hid_field *field, - { - struct mt_device *td = hid_get_drvdata(hid); - struct mt_report_data *rdata; -+ struct input_dev *input; - - rdata = mt_find_report_data(td, field->report); - if (rdata && rdata->is_mt_collection) - return mt_touch_event(hid, field, usage, value); - -+ if (field->application == MS_TYPE_COVER_APPLICATION && -+ rdata->application->quirks & MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH && -+ usage->hid == MS_TYPE_COVER_TABLET_MODE_SWITCH_USAGE) { -+ input = field->hidinput->input; -+ input_report_switch(input, SW_TABLET_MODE, (value & 0xFF) != 0x22); -+ input_sync(input); -+ return 1; -+ } -+ - return 0; - } - -@@ -1611,6 +1657,42 @@ static void mt_post_parse(struct mt_device *td, struct mt_application *app) - app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE; - } - -+static int get_type_cover_field(struct hid_report_enum *rep_enum, -+ struct hid_field **field, int usage) -+{ -+ struct hid_report *rep; -+ struct hid_field *cur_field; -+ int i, j; -+ -+ list_for_each_entry(rep, &rep_enum->report_list, list) { -+ for (i = 0; i < rep->maxfield; i++) { -+ cur_field = rep->field[i]; -+ if (cur_field->application != MS_TYPE_COVER_APPLICATION) -+ continue; -+ for (j = 0; j < cur_field->maxusage; j++) { -+ if (cur_field->usage[j].hid == usage) { -+ *field = cur_field; -+ return true; -+ } -+ } -+ } -+ } -+ return false; -+} -+ -+static void request_type_cover_tablet_mode_switch(struct hid_device *hdev) -+{ -+ struct hid_field *field; -+ -+ if (get_type_cover_field(&hdev->report_enum[HID_INPUT_REPORT], -+ &field, -+ MS_TYPE_COVER_TABLET_MODE_SWITCH_USAGE)) { -+ hid_hw_request(hdev, field->report, HID_REQ_GET_REPORT); -+ } else { -+ hid_err(hdev, "couldn't find tablet mode field\n"); -+ } -+} -+ - static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) - { - struct mt_device *td = hid_get_drvdata(hdev); -@@ -1659,6 +1741,13 @@ static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) - /* force BTN_STYLUS to allow tablet matching in udev */ - __set_bit(BTN_STYLUS, hi->input->keybit); - break; -+ case MS_TYPE_COVER_APPLICATION: -+ if (td->mtclass.quirks & MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH) { -+ suffix = "Tablet Mode Switch"; -+ request_type_cover_tablet_mode_switch(hdev); -+ break; -+ } -+ fallthrough; - default: - suffix = "UNKNOWN"; - break; -@@ -1741,30 +1830,6 @@ static void mt_expired_timeout(struct timer_list *t) - clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags); - } - --static void get_type_cover_backlight_field(struct hid_device *hdev, -- struct hid_field **field) --{ -- struct hid_report_enum *rep_enum; -- struct hid_report *rep; -- struct hid_field *cur_field; -- int i, j; -- -- rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; -- list_for_each_entry(rep, &rep_enum->report_list, list) { -- for (i = 0; i < rep->maxfield; i++) { -- cur_field = rep->field[i]; -- -- for (j = 0; j < cur_field->maxusage; j++) { -- if (cur_field->usage[j].hid -- == MS_TYPE_COVER_FEATURE_REPORT_USAGE) { -- *field = cur_field; -- return; -- } -- } -- } -- } --} -- - static void update_keyboard_backlight(struct hid_device *hdev, bool enabled) - { - struct usb_device *udev = hid_to_usb_dev(hdev); -@@ -1773,8 +1838,9 @@ static void update_keyboard_backlight(struct hid_device *hdev, bool enabled) - /* Wake up the device in case it's already suspended */ - pm_runtime_get_sync(&udev->dev); - -- get_type_cover_backlight_field(hdev, &field); -- if (!field) { -+ if (!get_type_cover_field(&hdev->report_enum[HID_FEATURE_REPORT], -+ &field, -+ MS_TYPE_COVER_FEATURE_REPORT_USAGE)) { - hid_err(hdev, "couldn't find backlight field\n"); - goto out; - } -@@ -1909,13 +1975,24 @@ static int mt_suspend(struct hid_device *hdev, pm_message_t state) - - static int mt_reset_resume(struct hid_device *hdev) - { -+ struct mt_device *td = hid_get_drvdata(hdev); -+ - mt_release_contacts(hdev); - mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); -+ -+ /* Request an update on the typecover folding state on resume -+ * after reset. -+ */ -+ if (td->mtclass.quirks & MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH) -+ request_type_cover_tablet_mode_switch(hdev); -+ - return 0; - } - - static int mt_resume(struct hid_device *hdev) - { -+ struct mt_device *td = hid_get_drvdata(hdev); -+ - /* Some Elan legacy devices require SET_IDLE to be set on resume. - * It should be safe to send it to other devices too. - * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */ -@@ -1924,6 +2001,10 @@ static int mt_resume(struct hid_device *hdev) - - mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true); - -+ /* Request an update on the typecover folding state on resume. */ -+ if (td->mtclass.quirks & MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH) -+ request_type_cover_tablet_mode_switch(hdev); -+ - return 0; - } - #endif -@@ -1931,6 +2012,21 @@ static int mt_resume(struct hid_device *hdev) - static void mt_remove(struct hid_device *hdev) - { - struct mt_device *td = hid_get_drvdata(hdev); -+ struct hid_field *field; -+ struct input_dev *input; -+ -+ /* Reset tablet mode switch on disconnect. */ -+ if (td->mtclass.quirks & MT_QUIRK_HAS_TYPE_COVER_TABLET_MODE_SWITCH) { -+ if (get_type_cover_field(&hdev->report_enum[HID_INPUT_REPORT], -+ &field, -+ MS_TYPE_COVER_TABLET_MODE_SWITCH_USAGE)) { -+ input = field->hidinput->input; -+ input_report_switch(input, SW_TABLET_MODE, 0); -+ input_sync(input); -+ } else { -+ hid_err(hdev, "couldn't find tablet mode field\n"); -+ } -+ } - - unregister_pm_notifier(&td->pm_notifier); - del_timer_sync(&td->release_timer); --- -2.42.0 - diff --git a/patches/6.4/0009-surface-shutdown.patch b/patches/6.4/0009-surface-shutdown.patch deleted file mode 100644 index 726fcc220..000000000 --- a/patches/6.4/0009-surface-shutdown.patch +++ /dev/null @@ -1,97 +0,0 @@ -From b4be6f1e311dd7e312e1003ec65edc4068447350 Mon Sep 17 00:00:00 2001 -From: Maximilian Luz -Date: Sun, 19 Feb 2023 22:12:24 +0100 -Subject: [PATCH] PCI: Add quirk to prevent calling shutdown mehtod - -Work around buggy EFI firmware: On some Microsoft Surface devices -(Surface Pro 9 and Surface Laptop 5) the EFI ResetSystem call with -EFI_RESET_SHUTDOWN doesn't function properly. Instead of shutting the -system down, it returns and the system stays on. - -It turns out that this only happens after PCI shutdown callbacks ran for -specific devices. Excluding those devices from the shutdown process -makes the ResetSystem call work as expected. - -TODO: Maybe we can find a better way or the root cause of this? - -Not-Signed-off-by: Maximilian Luz -Patchset: surface-shutdown ---- - drivers/pci/pci-driver.c | 3 +++ - drivers/pci/quirks.c | 36 ++++++++++++++++++++++++++++++++++++ - include/linux/pci.h | 1 + - 3 files changed, 40 insertions(+) - -diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c -index ae9baf801681..fdfaec2312a0 100644 ---- a/drivers/pci/pci-driver.c -+++ b/drivers/pci/pci-driver.c -@@ -507,6 +507,9 @@ static void pci_device_shutdown(struct device *dev) - struct pci_dev *pci_dev = to_pci_dev(dev); - struct pci_driver *drv = pci_dev->driver; - -+ if (pci_dev->no_shutdown) -+ return; -+ - pm_runtime_resume(dev); - - if (drv && drv->shutdown) -diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c -index b7c65193e786..f9e94faaf1b4 100644 ---- a/drivers/pci/quirks.c -+++ b/drivers/pci/quirks.c -@@ -6043,3 +6043,39 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2d, dpc_log_size); - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2f, dpc_log_size); - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a31, dpc_log_size); - #endif -+ -+static const struct dmi_system_id no_shutdown_dmi_table[] = { -+ /* -+ * Systems on which some devices should not be touched during shutdown. -+ */ -+ { -+ .ident = "Microsoft Surface Pro 9", -+ .matches = { -+ DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), -+ DMI_MATCH(DMI_PRODUCT_NAME, "Surface Pro 9"), -+ }, -+ }, -+ { -+ .ident = "Microsoft Surface Laptop 5", -+ .matches = { -+ DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), -+ DMI_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 5"), -+ }, -+ }, -+ {} -+}; -+ -+static void quirk_no_shutdown(struct pci_dev *dev) -+{ -+ if (!dmi_check_system(no_shutdown_dmi_table)) -+ return; -+ -+ dev->no_shutdown = 1; -+ pci_info(dev, "disabling shutdown ops for [%04x:%04x]\n", -+ dev->vendor, dev->device); -+} -+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x461e, quirk_no_shutdown); // Thunderbolt 4 USB Controller -+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x461f, quirk_no_shutdown); // Thunderbolt 4 PCI Express Root Port -+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x462f, quirk_no_shutdown); // Thunderbolt 4 PCI Express Root Port -+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x466d, quirk_no_shutdown); // Thunderbolt 4 NHI -+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x46a8, quirk_no_shutdown); // GPU -diff --git a/include/linux/pci.h b/include/linux/pci.h -index 7ee498cd1f37..740049a82343 100644 ---- a/include/linux/pci.h -+++ b/include/linux/pci.h -@@ -464,6 +464,7 @@ struct pci_dev { - unsigned int no_vf_scan:1; /* Don't scan for VFs after IOV enablement */ - unsigned int no_command_memory:1; /* No PCI_COMMAND_MEMORY */ - unsigned int rom_bar_overlap:1; /* ROM BAR disable broken */ -+ unsigned int no_shutdown:1; /* Do not touch device on shutdown */ - pci_dev_flags_t dev_flags; - atomic_t enable_cnt; /* pci_enable_device has been called */ - --- -2.42.0 - diff --git a/patches/6.4/0010-surface-gpe.patch b/patches/6.4/0010-surface-gpe.patch deleted file mode 100644 index d75d88237..000000000 --- a/patches/6.4/0010-surface-gpe.patch +++ /dev/null @@ -1,51 +0,0 @@ -From df55e0de121fe4fc0012aea462aa4992acea3f0b Mon Sep 17 00:00:00 2001 -From: Maximilian Luz -Date: Sun, 12 Mar 2023 01:41:57 +0100 -Subject: [PATCH] platform/surface: gpe: Add support for Surface Pro 9 - -Add the lid GPE used by the Surface Pro 9. - -Signed-off-by: Maximilian Luz -Patchset: surface-gpe ---- - drivers/platform/surface/surface_gpe.c | 17 +++++++++++++++++ - 1 file changed, 17 insertions(+) - -diff --git a/drivers/platform/surface/surface_gpe.c b/drivers/platform/surface/surface_gpe.c -index c219b840d491..69c4352e8406 100644 ---- a/drivers/platform/surface/surface_gpe.c -+++ b/drivers/platform/surface/surface_gpe.c -@@ -41,6 +41,11 @@ static const struct property_entry lid_device_props_l4F[] = { - {}, - }; - -+static const struct property_entry lid_device_props_l52[] = { -+ PROPERTY_ENTRY_U32("gpe", 0x52), -+ {}, -+}; -+ - static const struct property_entry lid_device_props_l57[] = { - PROPERTY_ENTRY_U32("gpe", 0x57), - {}, -@@ -107,6 +112,18 @@ static const struct dmi_system_id dmi_lid_device_table[] = { - }, - .driver_data = (void *)lid_device_props_l4B, - }, -+ { -+ /* -+ * We match for SKU here due to product name clash with the ARM -+ * version. -+ */ -+ .ident = "Surface Pro 9", -+ .matches = { -+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), -+ DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_9_2038"), -+ }, -+ .driver_data = (void *)lid_device_props_l52, -+ }, - { - .ident = "Surface Book 1", - .matches = { --- -2.42.0 - diff --git a/patches/6.4/0011-cameras.patch b/patches/6.4/0011-cameras.patch deleted file mode 100644 index 6f2a0b8ff..000000000 --- a/patches/6.4/0011-cameras.patch +++ /dev/null @@ -1,1400 +0,0 @@ -From ae015f45fc28c9ba7b637975d2a0c49d649e9c9f Mon Sep 17 00:00:00 2001 -From: Hans de Goede -Date: Sun, 10 Oct 2021 20:56:57 +0200 -Subject: [PATCH] ACPI: delay enumeration of devices with a _DEP pointing to an - INT3472 device - -The clk and regulator frameworks expect clk/regulator consumer-devices -to have info about the consumed clks/regulators described in the device's -fw_node. - -To work around cases where this info is not present in the firmware tables, -which is often the case on x86/ACPI devices, both frameworks allow the -provider-driver to attach info about consumers to the clks/regulators -when registering these. - -This causes problems with the probe ordering wrt drivers for consumers -of these clks/regulators. Since the lookups are only registered when the -provider-driver binds, trying to get these clks/regulators before then -results in a -ENOENT error for clks and a dummy regulator for regulators. - -One case where we hit this issue is camera sensors such as e.g. the OV8865 -sensor found on the Microsoft Surface Go. The sensor uses clks, regulators -and GPIOs provided by a TPS68470 PMIC which is described in an INT3472 -ACPI device. There is special platform code handling this and setting -platform_data with the necessary consumer info on the MFD cells -instantiated for the PMIC under: drivers/platform/x86/intel/int3472. - -For this to work properly the ov8865 driver must not bind to the I2C-client -for the OV8865 sensor until after the TPS68470 PMIC gpio, regulator and -clk MFD cells have all been fully setup. - -The OV8865 on the Microsoft Surface Go is just one example, all X86 -devices using the Intel IPU3 camera block found on recent Intel SoCs -have similar issues where there is an INT3472 HID ACPI-device, which -describes the clks and regulators, and the driver for this INT3472 device -must be fully initialized before the sensor driver (any sensor driver) -binds for things to work properly. - -On these devices the ACPI nodes describing the sensors all have a _DEP -dependency on the matching INT3472 ACPI device (there is one per sensor). - -This allows solving the probe-ordering problem by delaying the enumeration -(instantiation of the I2C-client in the ov8865 example) of ACPI-devices -which have a _DEP dependency on an INT3472 device. - -The new acpi_dev_ready_for_enumeration() helper used for this is also -exported because for devices, which have the enumeration_by_parent flag -set, the parent-driver will do its own scan of child ACPI devices and -it will try to enumerate those during its probe(). Code doing this such -as e.g. the i2c-core-acpi.c code must call this new helper to ensure -that it too delays the enumeration until all the _DEP dependencies are -met on devices which have the new honor_deps flag set. - -Signed-off-by: Hans de Goede -Patchset: cameras ---- - drivers/acpi/scan.c | 3 +++ - 1 file changed, 3 insertions(+) - -diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c -index c28c8d5ca0c8..9bdd65519ed4 100644 ---- a/drivers/acpi/scan.c -+++ b/drivers/acpi/scan.c -@@ -2107,6 +2107,9 @@ static acpi_status acpi_bus_check_add_2(acpi_handle handle, u32 lvl_not_used, - - static void acpi_default_enumeration(struct acpi_device *device) - { -+ if (!acpi_dev_ready_for_enumeration(device)) -+ return; -+ - /* - * Do not enumerate devices with enumeration_by_parent flag set as - * they will be enumerated by their respective parents. --- -2.42.0 - -From 63e9677412a1346622d91dd69b6ddcf76d818f32 Mon Sep 17 00:00:00 2001 -From: zouxiaoh -Date: Fri, 25 Jun 2021 08:52:59 +0800 -Subject: [PATCH] iommu: intel-ipu: use IOMMU passthrough mode for Intel IPUs - -Intel IPU(Image Processing Unit) has its own (IO)MMU hardware, -The IPU driver allocates its own page table that is not mapped -via the DMA, and thus the Intel IOMMU driver blocks access giving -this error: DMAR: DRHD: handling fault status reg 3 DMAR: -[DMA Read] Request device [00:05.0] PASID ffffffff -fault addr 76406000 [fault reason 06] PTE Read access is not set -As IPU is not an external facing device which is not risky, so use -IOMMU passthrough mode for Intel IPUs. - -Change-Id: I6dcccdadac308cf42e20a18e1b593381391e3e6b -Depends-On: Iacd67578e8c6a9b9ac73285f52b4081b72fb68a6 -Tracked-On: #JIITL8-411 -Signed-off-by: Bingbu Cao -Signed-off-by: zouxiaoh -Signed-off-by: Xu Chongyang -Patchset: cameras ---- - drivers/iommu/intel/iommu.c | 30 ++++++++++++++++++++++++++++++ - 1 file changed, 30 insertions(+) - -diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c -index 0d4542b7365d..c96a9baea21c 100644 ---- a/drivers/iommu/intel/iommu.c -+++ b/drivers/iommu/intel/iommu.c -@@ -37,6 +37,12 @@ - #define IS_GFX_DEVICE(pdev) ((pdev->class >> 16) == PCI_BASE_CLASS_DISPLAY) - #define IS_USB_DEVICE(pdev) ((pdev->class >> 8) == PCI_CLASS_SERIAL_USB) - #define IS_ISA_DEVICE(pdev) ((pdev->class >> 8) == PCI_CLASS_BRIDGE_ISA) -+#define IS_INTEL_IPU(pdev) ((pdev)->vendor == PCI_VENDOR_ID_INTEL && \ -+ ((pdev)->device == 0x9a19 || \ -+ (pdev)->device == 0x9a39 || \ -+ (pdev)->device == 0x4e19 || \ -+ (pdev)->device == 0x465d || \ -+ (pdev)->device == 0x1919)) - #define IS_IPTS(pdev) ((pdev)->vendor == PCI_VENDOR_ID_INTEL && \ - ((pdev)->device == 0x9d3e)) - #define IS_AZALIA(pdev) ((pdev)->vendor == 0x8086 && (pdev)->device == 0x3a3e) -@@ -290,12 +296,14 @@ EXPORT_SYMBOL_GPL(intel_iommu_enabled); - - static int dmar_map_gfx = 1; - static int dmar_map_ipts = 1; -+static int dmar_map_ipu = 1; - static int intel_iommu_superpage = 1; - static int iommu_identity_mapping; - static int iommu_skip_te_disable; - - #define IDENTMAP_GFX 2 - #define IDENTMAP_AZALIA 4 -+#define IDENTMAP_IPU 8 - #define IDENTMAP_IPTS 16 - - const struct iommu_ops intel_iommu_ops; -@@ -2565,6 +2573,9 @@ static int device_def_domain_type(struct device *dev) - if ((iommu_identity_mapping & IDENTMAP_GFX) && IS_GFX_DEVICE(pdev)) - return IOMMU_DOMAIN_IDENTITY; - -+ if ((iommu_identity_mapping & IDENTMAP_IPU) && IS_INTEL_IPU(pdev)) -+ return IOMMU_DOMAIN_IDENTITY; -+ - if ((iommu_identity_mapping & IDENTMAP_IPTS) && IS_IPTS(pdev)) - return IOMMU_DOMAIN_IDENTITY; - } -@@ -2874,6 +2885,9 @@ static int __init init_dmars(void) - if (!dmar_map_gfx) - iommu_identity_mapping |= IDENTMAP_GFX; - -+ if (!dmar_map_ipu) -+ iommu_identity_mapping |= IDENTMAP_IPU; -+ - if (!dmar_map_ipts) - iommu_identity_mapping |= IDENTMAP_IPTS; - -@@ -4788,6 +4802,18 @@ static void quirk_iommu_igfx(struct pci_dev *dev) - dmar_map_gfx = 0; - } - -+static void quirk_iommu_ipu(struct pci_dev *dev) -+{ -+ if (!IS_INTEL_IPU(dev)) -+ return; -+ -+ if (risky_device(dev)) -+ return; -+ -+ pci_info(dev, "Passthrough IOMMU for integrated Intel IPU\n"); -+ dmar_map_ipu = 0; -+} -+ - static void quirk_iommu_ipts(struct pci_dev *dev) - { - if (!IS_IPTS(dev)) -@@ -4799,6 +4825,7 @@ static void quirk_iommu_ipts(struct pci_dev *dev) - pci_info(dev, "Passthrough IOMMU for IPTS\n"); - dmar_map_ipts = 0; - } -+ - /* G4x/GM45 integrated gfx dmar support is totally busted. */ - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2a40, quirk_iommu_igfx); - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2e00, quirk_iommu_igfx); -@@ -4834,6 +4861,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1632, quirk_iommu_igfx); - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x163A, quirk_iommu_igfx); - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x163D, quirk_iommu_igfx); - -+/* disable IPU dmar support */ -+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_iommu_ipu); -+ - /* disable IPTS dmar support */ - DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9D3E, quirk_iommu_ipts); - --- -2.42.0 - -From a515136213935f0b16ef6d39810f717f3b558ce3 Mon Sep 17 00:00:00 2001 -From: Daniel Scally -Date: Sun, 10 Oct 2021 20:57:02 +0200 -Subject: [PATCH] platform/x86: int3472: Enable I2c daisy chain - -The TPS68470 PMIC has an I2C passthrough mode through which I2C traffic -can be forwarded to a device connected to the PMIC as though it were -connected directly to the system bus. Enable this mode when the chip -is initialised. - -Signed-off-by: Daniel Scally -Patchset: cameras ---- - drivers/platform/x86/intel/int3472/tps68470.c | 7 +++++++ - 1 file changed, 7 insertions(+) - -diff --git a/drivers/platform/x86/intel/int3472/tps68470.c b/drivers/platform/x86/intel/int3472/tps68470.c -index 5b8d1a9620a5..6a0ff035cf20 100644 ---- a/drivers/platform/x86/intel/int3472/tps68470.c -+++ b/drivers/platform/x86/intel/int3472/tps68470.c -@@ -46,6 +46,13 @@ static int tps68470_chip_init(struct device *dev, struct regmap *regmap) - return ret; - } - -+ /* Enable I2C daisy chain */ -+ ret = regmap_write(regmap, TPS68470_REG_S_I2C_CTL, 0x03); -+ if (ret) { -+ dev_err(dev, "Failed to enable i2c daisy chain\n"); -+ return ret; -+ } -+ - dev_info(dev, "TPS68470 REVID: 0x%02x\n", version); - - return 0; --- -2.42.0 - -From 62ef76ec78e2b52003c28b5f963dd6b1a825f9d5 Mon Sep 17 00:00:00 2001 -From: Daniel Scally -Date: Wed, 4 May 2022 23:21:45 +0100 -Subject: [PATCH] media: ipu3-cio2: Move functionality from .complete() to - .bound() - -Creating links and registering subdev nodes during the .complete() -callback has the unfortunate effect of preventing all cameras that -connect to a notifier from working if any one of their drivers fails -to probe. Moving the functionality from .complete() to .bound() allows -those camera sensor drivers that did probe correctly to work regardless. - -Signed-off-by: Daniel Scally -Patchset: cameras ---- - drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 65 +++++++------------ - 1 file changed, 23 insertions(+), 42 deletions(-) - -diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c -index 03a7ab4d2e69..3046faf31254 100644 ---- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c -+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c -@@ -1385,7 +1385,10 @@ static int cio2_notifier_bound(struct v4l2_async_notifier *notifier, - { - struct cio2_device *cio2 = to_cio2_device(notifier); - struct sensor_async_subdev *s_asd = to_sensor_asd(asd); -+ struct device *dev = &cio2->pci_dev->dev; - struct cio2_queue *q; -+ unsigned int pad; -+ int ret; - - if (cio2->queue[s_asd->csi2.port].sensor) - return -EBUSY; -@@ -1396,7 +1399,26 @@ static int cio2_notifier_bound(struct v4l2_async_notifier *notifier, - q->sensor = sd; - q->csi_rx_base = cio2->base + CIO2_REG_PIPE_BASE(q->csi2.port); - -- return 0; -+ for (pad = 0; pad < q->sensor->entity.num_pads; pad++) -+ if (q->sensor->entity.pads[pad].flags & -+ MEDIA_PAD_FL_SOURCE) -+ break; -+ -+ if (pad == q->sensor->entity.num_pads) { -+ dev_err(dev, "failed to find src pad for %s\n", -+ q->sensor->name); -+ return -ENXIO; -+ } -+ -+ ret = media_create_pad_link(&q->sensor->entity, pad, &q->subdev.entity, -+ CIO2_PAD_SINK, 0); -+ if (ret) { -+ dev_err(dev, "failed to create link for %s\n", -+ q->sensor->name); -+ return ret; -+ } -+ -+ return v4l2_device_register_subdev_nodes(&cio2->v4l2_dev); - } - - /* The .unbind callback */ -@@ -1410,50 +1432,9 @@ static void cio2_notifier_unbind(struct v4l2_async_notifier *notifier, - cio2->queue[s_asd->csi2.port].sensor = NULL; - } - --/* .complete() is called after all subdevices have been located */ --static int cio2_notifier_complete(struct v4l2_async_notifier *notifier) --{ -- struct cio2_device *cio2 = to_cio2_device(notifier); -- struct device *dev = &cio2->pci_dev->dev; -- struct sensor_async_subdev *s_asd; -- struct v4l2_async_subdev *asd; -- struct cio2_queue *q; -- unsigned int pad; -- int ret; -- -- list_for_each_entry(asd, &cio2->notifier.asd_list, asd_list) { -- s_asd = to_sensor_asd(asd); -- q = &cio2->queue[s_asd->csi2.port]; -- -- for (pad = 0; pad < q->sensor->entity.num_pads; pad++) -- if (q->sensor->entity.pads[pad].flags & -- MEDIA_PAD_FL_SOURCE) -- break; -- -- if (pad == q->sensor->entity.num_pads) { -- dev_err(dev, "failed to find src pad for %s\n", -- q->sensor->name); -- return -ENXIO; -- } -- -- ret = media_create_pad_link( -- &q->sensor->entity, pad, -- &q->subdev.entity, CIO2_PAD_SINK, -- 0); -- if (ret) { -- dev_err(dev, "failed to create link for %s\n", -- q->sensor->name); -- return ret; -- } -- } -- -- return v4l2_device_register_subdev_nodes(&cio2->v4l2_dev); --} -- - static const struct v4l2_async_notifier_operations cio2_async_ops = { - .bound = cio2_notifier_bound, - .unbind = cio2_notifier_unbind, -- .complete = cio2_notifier_complete, - }; - - static int cio2_parse_firmware(struct cio2_device *cio2) --- -2.42.0 - -From 6e975da0d6eda4e5b2a2ead8fa557d4c51c3484f Mon Sep 17 00:00:00 2001 -From: Daniel Scally -Date: Thu, 2 Jun 2022 22:15:56 +0100 -Subject: [PATCH] media: ipu3-cio2: Re-add .complete() to ipu3-cio2 - -Removing the .complete() callback had some unintended consequences. -Because the VCM driver is not directly linked to the ipu3-cio2 -driver .bound() never gets called for it, which means its devnode -is never created if it probes late. Because .complete() waits for -any sub-notifiers to also be complete it is captured in that call. - -Signed-off-by: Daniel Scally -Patchset: cameras ---- - drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 9 +++++++++ - 1 file changed, 9 insertions(+) - -diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c -index 3046faf31254..21854c734fdd 100644 ---- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c -+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c -@@ -1432,9 +1432,18 @@ static void cio2_notifier_unbind(struct v4l2_async_notifier *notifier, - cio2->queue[s_asd->csi2.port].sensor = NULL; - } - -+/* .complete() is called after all subdevices have been located */ -+static int cio2_notifier_complete(struct v4l2_async_notifier *notifier) -+{ -+ struct cio2_device *cio2 = to_cio2_device(notifier); -+ -+ return v4l2_device_register_subdev_nodes(&cio2->v4l2_dev); -+} -+ - static const struct v4l2_async_notifier_operations cio2_async_ops = { - .bound = cio2_notifier_bound, - .unbind = cio2_notifier_unbind, -+ .complete = cio2_notifier_complete, - }; - - static int cio2_parse_firmware(struct cio2_device *cio2) --- -2.42.0 - -From 545955f4693dced7e1912de1b0d3c8aa9fdf03b5 Mon Sep 17 00:00:00 2001 -From: Daniel Scally -Date: Thu, 28 Oct 2021 21:55:16 +0100 -Subject: [PATCH] media: i2c: Add driver for DW9719 VCM - -Add a driver for the DW9719 VCM. The driver creates a v4l2 subdevice -and registers a control to set the desired focus. - -Signed-off-by: Daniel Scally -Patchset: cameras ---- - MAINTAINERS | 7 + - drivers/media/i2c/Kconfig | 11 + - drivers/media/i2c/Makefile | 1 + - drivers/media/i2c/dw9719.c | 425 +++++++++++++++++++++++++++++++++++++ - 4 files changed, 444 insertions(+) - create mode 100644 drivers/media/i2c/dw9719.c - -diff --git a/MAINTAINERS b/MAINTAINERS -index 35e19594640d..7e6631f0b55b 100644 ---- a/MAINTAINERS -+++ b/MAINTAINERS -@@ -6262,6 +6262,13 @@ T: git git://linuxtv.org/media_tree.git - F: Documentation/devicetree/bindings/media/i2c/dongwoon,dw9714.yaml - F: drivers/media/i2c/dw9714.c - -+DONGWOON DW9719 LENS VOICE COIL DRIVER -+M: Daniel Scally -+L: linux-media@vger.kernel.org -+S: Maintained -+T: git git://linuxtv.org/media_tree.git -+F: drivers/media/i2c/dw9719.c -+ - DONGWOON DW9768 LENS VOICE COIL DRIVER - M: Dongchun Zhu - L: linux-media@vger.kernel.org -diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig -index dbcc2222ddd3..750b38d11210 100644 ---- a/drivers/media/i2c/Kconfig -+++ b/drivers/media/i2c/Kconfig -@@ -842,6 +842,17 @@ config VIDEO_DW9714 - capability. This is designed for linear control of - voice coil motors, controlled via I2C serial interface. - -+config VIDEO_DW9719 -+ tristate "DW9719 lens voice coil support" -+ depends on I2C && VIDEO_V4L2 -+ select MEDIA_CONTROLLER -+ select VIDEO_V4L2_SUBDEV_API -+ select V4L2_ASYNC -+ help -+ This is a driver for the DW9719 camera lens voice coil. -+ This is designed for linear control of voice coil motors, -+ controlled via I2C serial interface. -+ - config VIDEO_DW9768 - tristate "DW9768 lens voice coil support" - depends on I2C && VIDEO_DEV -diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile -index b44dacf935f4..2a68bfb621b0 100644 ---- a/drivers/media/i2c/Makefile -+++ b/drivers/media/i2c/Makefile -@@ -29,6 +29,7 @@ obj-$(CONFIG_VIDEO_CS5345) += cs5345.o - obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o - obj-$(CONFIG_VIDEO_CX25840) += cx25840/ - obj-$(CONFIG_VIDEO_DW9714) += dw9714.o -+obj-$(CONFIG_VIDEO_DW9719) += dw9719.o - obj-$(CONFIG_VIDEO_DW9768) += dw9768.o - obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o - obj-$(CONFIG_VIDEO_ET8EK8) += et8ek8/ -diff --git a/drivers/media/i2c/dw9719.c b/drivers/media/i2c/dw9719.c -new file mode 100644 -index 000000000000..180b04d2a6b3 ---- /dev/null -+++ b/drivers/media/i2c/dw9719.c -@@ -0,0 +1,425 @@ -+// SPDX-License-Identifier: GPL-2.0 -+// Copyright (c) 2012 Intel Corporation -+ -+/* -+ * Based on linux/modules/camera/drivers/media/i2c/imx/dw9719.c in this repo: -+ * https://github.com/ZenfoneArea/android_kernel_asus_zenfone5 -+ */ -+ -+#include -+ -+#include -+#include -+#include -+#include -+#include -+ -+#include -+#include -+#include -+ -+#define DW9719_MAX_FOCUS_POS 1023 -+#define DW9719_CTRL_STEPS 16 -+#define DW9719_CTRL_DELAY_US 1000 -+#define DELAY_MAX_PER_STEP_NS (1000000 * 1023) -+ -+#define DW9719_INFO 0 -+#define DW9719_ID 0xF1 -+#define DW9719_CONTROL 2 -+#define DW9719_VCM_CURRENT 3 -+ -+#define DW9719_MODE 6 -+#define DW9719_VCM_FREQ 7 -+ -+#define DW9719_MODE_SAC3 0x40 -+#define DW9719_DEFAULT_VCM_FREQ 0x60 -+#define DW9719_ENABLE_RINGING 0x02 -+ -+#define NUM_REGULATORS 2 -+ -+#define to_dw9719_device(x) container_of(x, struct dw9719_device, sd) -+ -+struct dw9719_device { -+ struct device *dev; -+ struct i2c_client *client; -+ struct regulator_bulk_data regulators[NUM_REGULATORS]; -+ struct v4l2_subdev sd; -+ -+ struct dw9719_v4l2_ctrls { -+ struct v4l2_ctrl_handler handler; -+ struct v4l2_ctrl *focus; -+ } ctrls; -+}; -+ -+static int dw9719_i2c_rd8(struct i2c_client *client, u8 reg, u8 *val) -+{ -+ struct i2c_msg msg[2]; -+ u8 buf[2] = { reg }; -+ int ret; -+ -+ msg[0].addr = client->addr; -+ msg[0].flags = 0; -+ msg[0].len = 1; -+ msg[0].buf = buf; -+ -+ msg[1].addr = client->addr; -+ msg[1].flags = I2C_M_RD; -+ msg[1].len = 1; -+ msg[1].buf = &buf[1]; -+ *val = 0; -+ -+ ret = i2c_transfer(client->adapter, msg, 2); -+ if (ret < 0) -+ return ret; -+ -+ *val = buf[1]; -+ -+ return 0; -+} -+ -+static int dw9719_i2c_wr8(struct i2c_client *client, u8 reg, u8 val) -+{ -+ struct i2c_msg msg; -+ int ret; -+ -+ u8 buf[2] = { reg, val }; -+ -+ msg.addr = client->addr; -+ msg.flags = 0; -+ msg.len = sizeof(buf); -+ msg.buf = buf; -+ -+ ret = i2c_transfer(client->adapter, &msg, 1); -+ -+ return ret < 0 ? ret : 0; -+} -+ -+static int dw9719_i2c_wr16(struct i2c_client *client, u8 reg, u16 val) -+{ -+ struct i2c_msg msg; -+ u8 buf[3] = { reg }; -+ int ret; -+ -+ put_unaligned_be16(val, buf + 1); -+ -+ msg.addr = client->addr; -+ msg.flags = 0; -+ msg.len = sizeof(buf); -+ msg.buf = buf; -+ -+ ret = i2c_transfer(client->adapter, &msg, 1); -+ -+ return ret < 0 ? ret : 0; -+} -+ -+static int dw9719_detect(struct dw9719_device *dw9719) -+{ -+ int ret; -+ u8 val; -+ -+ ret = dw9719_i2c_rd8(dw9719->client, DW9719_INFO, &val); -+ if (ret < 0) -+ return ret; -+ -+ if (val != DW9719_ID) { -+ dev_err(dw9719->dev, "Failed to detect correct id\n"); -+ ret = -ENXIO; -+ } -+ -+ return 0; -+} -+ -+static int dw9719_power_down(struct dw9719_device *dw9719) -+{ -+ return regulator_bulk_disable(NUM_REGULATORS, dw9719->regulators); -+} -+ -+static int dw9719_power_up(struct dw9719_device *dw9719) -+{ -+ int ret; -+ -+ ret = regulator_bulk_enable(NUM_REGULATORS, dw9719->regulators); -+ if (ret) -+ return ret; -+ -+ /* Jiggle SCL pin to wake up device */ -+ ret = dw9719_i2c_wr8(dw9719->client, DW9719_CONTROL, 1); -+ -+ /* Need 100us to transit from SHUTDOWN to STANDBY*/ -+ usleep_range(100, 1000); -+ -+ ret = dw9719_i2c_wr8(dw9719->client, DW9719_CONTROL, -+ DW9719_ENABLE_RINGING); -+ if (ret < 0) -+ goto fail_powerdown; -+ -+ ret = dw9719_i2c_wr8(dw9719->client, DW9719_MODE, DW9719_MODE_SAC3); -+ if (ret < 0) -+ goto fail_powerdown; -+ -+ ret = dw9719_i2c_wr8(dw9719->client, DW9719_VCM_FREQ, -+ DW9719_DEFAULT_VCM_FREQ); -+ if (ret < 0) -+ goto fail_powerdown; -+ -+ return 0; -+ -+fail_powerdown: -+ dw9719_power_down(dw9719); -+ return ret; -+} -+ -+static int dw9719_t_focus_abs(struct dw9719_device *dw9719, s32 value) -+{ -+ int ret; -+ -+ value = clamp(value, 0, DW9719_MAX_FOCUS_POS); -+ ret = dw9719_i2c_wr16(dw9719->client, DW9719_VCM_CURRENT, value); -+ if (ret < 0) -+ return ret; -+ -+ return 0; -+} -+ -+static int dw9719_set_ctrl(struct v4l2_ctrl *ctrl) -+{ -+ struct dw9719_device *dw9719 = container_of(ctrl->handler, -+ struct dw9719_device, -+ ctrls.handler); -+ int ret; -+ -+ /* Only apply changes to the controls if the device is powered up */ -+ if (!pm_runtime_get_if_in_use(dw9719->dev)) -+ return 0; -+ -+ switch (ctrl->id) { -+ case V4L2_CID_FOCUS_ABSOLUTE: -+ ret = dw9719_t_focus_abs(dw9719, ctrl->val); -+ break; -+ default: -+ ret = -EINVAL; -+ } -+ -+ pm_runtime_put(dw9719->dev); -+ -+ return ret; -+} -+ -+static const struct v4l2_ctrl_ops dw9719_ctrl_ops = { -+ .s_ctrl = dw9719_set_ctrl, -+}; -+ -+static int __maybe_unused dw9719_suspend(struct device *dev) -+{ -+ struct v4l2_subdev *sd = dev_get_drvdata(dev); -+ struct dw9719_device *dw9719 = to_dw9719_device(sd); -+ int ret; -+ int val; -+ -+ for (val = dw9719->ctrls.focus->val; val >= 0; -+ val -= DW9719_CTRL_STEPS) { -+ ret = dw9719_t_focus_abs(dw9719, val); -+ if (ret) -+ return ret; -+ -+ usleep_range(DW9719_CTRL_DELAY_US, DW9719_CTRL_DELAY_US + 10); -+ } -+ -+ return dw9719_power_down(dw9719); -+} -+ -+static int __maybe_unused dw9719_resume(struct device *dev) -+{ -+ struct v4l2_subdev *sd = dev_get_drvdata(dev); -+ struct dw9719_device *dw9719 = to_dw9719_device(sd); -+ int current_focus = dw9719->ctrls.focus->val; -+ int ret; -+ int val; -+ -+ ret = dw9719_power_up(dw9719); -+ if (ret) -+ return ret; -+ -+ for (val = current_focus % DW9719_CTRL_STEPS; val < current_focus; -+ val += DW9719_CTRL_STEPS) { -+ ret = dw9719_t_focus_abs(dw9719, val); -+ if (ret) -+ goto err_power_down; -+ -+ usleep_range(DW9719_CTRL_DELAY_US, DW9719_CTRL_DELAY_US + 10); -+ } -+ -+ return 0; -+ -+err_power_down: -+ dw9719_power_down(dw9719); -+ return ret; -+} -+ -+static int dw9719_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) -+{ -+ return pm_runtime_resume_and_get(sd->dev); -+} -+ -+static int dw9719_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) -+{ -+ pm_runtime_put(sd->dev); -+ -+ return 0; -+} -+ -+static const struct v4l2_subdev_internal_ops dw9719_internal_ops = { -+ .open = dw9719_open, -+ .close = dw9719_close, -+}; -+ -+static int dw9719_init_controls(struct dw9719_device *dw9719) -+{ -+ const struct v4l2_ctrl_ops *ops = &dw9719_ctrl_ops; -+ int ret; -+ -+ ret = v4l2_ctrl_handler_init(&dw9719->ctrls.handler, 1); -+ if (ret) -+ return ret; -+ -+ dw9719->ctrls.focus = v4l2_ctrl_new_std(&dw9719->ctrls.handler, ops, -+ V4L2_CID_FOCUS_ABSOLUTE, 0, -+ DW9719_MAX_FOCUS_POS, 1, 0); -+ -+ if (dw9719->ctrls.handler.error) { -+ dev_err(dw9719->dev, "Error initialising v4l2 ctrls\n"); -+ ret = dw9719->ctrls.handler.error; -+ goto err_free_handler; -+ } -+ -+ dw9719->sd.ctrl_handler = &dw9719->ctrls.handler; -+ -+ return ret; -+ -+err_free_handler: -+ v4l2_ctrl_handler_free(&dw9719->ctrls.handler); -+ return ret; -+} -+ -+static const struct v4l2_subdev_ops dw9719_ops = { }; -+ -+static int dw9719_probe(struct i2c_client *client) -+{ -+ struct dw9719_device *dw9719; -+ int ret; -+ -+ dw9719 = devm_kzalloc(&client->dev, sizeof(*dw9719), GFP_KERNEL); -+ if (!dw9719) -+ return -ENOMEM; -+ -+ dw9719->client = client; -+ dw9719->dev = &client->dev; -+ -+ dw9719->regulators[0].supply = "vdd"; -+ /* -+ * The DW9719 has only the 1 VDD voltage input, but some PMICs such as -+ * the TPS68470 PMIC have I2C passthrough capability, to disconnect the -+ * sensor's I2C pins from the I2C bus when the sensors VSIO (Sensor-IO) -+ * is off, because some sensors then short these pins to ground; -+ * and the DW9719 might sit behind this passthrough, this it needs to -+ * enable VSIO as that will also enable the I2C passthrough. -+ */ -+ dw9719->regulators[1].supply = "vsio"; -+ -+ ret = devm_regulator_bulk_get(&client->dev, NUM_REGULATORS, -+ dw9719->regulators); -+ if (ret) -+ return dev_err_probe(&client->dev, ret, "getting regulators\n"); -+ -+ v4l2_i2c_subdev_init(&dw9719->sd, client, &dw9719_ops); -+ dw9719->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; -+ dw9719->sd.internal_ops = &dw9719_internal_ops; -+ -+ ret = dw9719_init_controls(dw9719); -+ if (ret) -+ return ret; -+ -+ ret = media_entity_pads_init(&dw9719->sd.entity, 0, NULL); -+ if (ret < 0) -+ goto err_free_ctrl_handler; -+ -+ dw9719->sd.entity.function = MEDIA_ENT_F_LENS; -+ -+ /* -+ * We need the driver to work in the event that pm runtime is disable in -+ * the kernel, so power up and verify the chip now. In the event that -+ * runtime pm is disabled this will leave the chip on, so that the lens -+ * will work. -+ */ -+ -+ ret = dw9719_power_up(dw9719); -+ if (ret) -+ goto err_cleanup_media; -+ -+ ret = dw9719_detect(dw9719); -+ if (ret) -+ goto err_powerdown; -+ -+ pm_runtime_set_active(&client->dev); -+ pm_runtime_get_noresume(&client->dev); -+ pm_runtime_enable(&client->dev); -+ -+ ret = v4l2_async_register_subdev(&dw9719->sd); -+ if (ret < 0) -+ goto err_pm_runtime; -+ -+ pm_runtime_set_autosuspend_delay(&client->dev, 1000); -+ pm_runtime_use_autosuspend(&client->dev); -+ pm_runtime_put_autosuspend(&client->dev); -+ -+ return ret; -+ -+err_pm_runtime: -+ pm_runtime_disable(&client->dev); -+ pm_runtime_put_noidle(&client->dev); -+err_powerdown: -+ dw9719_power_down(dw9719); -+err_cleanup_media: -+ media_entity_cleanup(&dw9719->sd.entity); -+err_free_ctrl_handler: -+ v4l2_ctrl_handler_free(&dw9719->ctrls.handler); -+ -+ return ret; -+} -+ -+static void dw9719_remove(struct i2c_client *client) -+{ -+ struct v4l2_subdev *sd = i2c_get_clientdata(client); -+ struct dw9719_device *dw9719 = container_of(sd, struct dw9719_device, -+ sd); -+ -+ pm_runtime_disable(&client->dev); -+ v4l2_async_unregister_subdev(sd); -+ v4l2_ctrl_handler_free(&dw9719->ctrls.handler); -+ media_entity_cleanup(&dw9719->sd.entity); -+} -+ -+static const struct i2c_device_id dw9719_id_table[] = { -+ { "dw9719" }, -+ { } -+}; -+MODULE_DEVICE_TABLE(i2c, dw9719_id_table); -+ -+static const struct dev_pm_ops dw9719_pm_ops = { -+ SET_RUNTIME_PM_OPS(dw9719_suspend, dw9719_resume, NULL) -+}; -+ -+static struct i2c_driver dw9719_i2c_driver = { -+ .driver = { -+ .name = "dw9719", -+ .pm = &dw9719_pm_ops, -+ }, -+ .probe_new = dw9719_probe, -+ .remove = dw9719_remove, -+ .id_table = dw9719_id_table, -+}; -+module_i2c_driver(dw9719_i2c_driver); -+ -+MODULE_AUTHOR("Daniel Scally "); -+MODULE_DESCRIPTION("DW9719 VCM Driver"); -+MODULE_LICENSE("GPL"); --- -2.42.0 - -From 690c13815c584cbb1be0c7526c0639af98c01a97 Mon Sep 17 00:00:00 2001 -From: Maximilian Luz -Date: Fri, 15 Jul 2022 23:48:00 +0200 -Subject: [PATCH] drivers/media/i2c: Fix DW9719 dependencies - -It should depend on VIDEO_DEV instead of VIDEO_V4L2. - -Signed-off-by: Maximilian Luz -Patchset: cameras ---- - drivers/media/i2c/Kconfig | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - -diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig -index 750b38d11210..99d84e60e58d 100644 ---- a/drivers/media/i2c/Kconfig -+++ b/drivers/media/i2c/Kconfig -@@ -844,7 +844,7 @@ config VIDEO_DW9714 - - config VIDEO_DW9719 - tristate "DW9719 lens voice coil support" -- depends on I2C && VIDEO_V4L2 -+ depends on I2C && VIDEO_DEV - select MEDIA_CONTROLLER - select VIDEO_V4L2_SUBDEV_API - select V4L2_ASYNC --- -2.42.0 - -From a3a01bf668c8b4d39bccdf7323d6a07862fb9296 Mon Sep 17 00:00:00 2001 -From: Daniel Scally -Date: Thu, 2 Mar 2023 12:59:39 +0000 -Subject: [PATCH] platform/x86: int3472: Remap reset GPIO for INT347E - -ACPI _HID INT347E represents the OmniVision 7251 camera sensor. The -driver for this sensor expects a single pin named "enable", but on -some Microsoft Surface platforms the sensor is assigned a single -GPIO who's type flag is INT3472_GPIO_TYPE_RESET. - -Remap the GPIO pin's function from "reset" to "enable". This is done -outside of the existing remap table since it is a more widespread -discrepancy than that method is designed for. Additionally swap the -polarity of the pin to match the driver's expectation. - -Signed-off-by: Daniel Scally -Patchset: cameras ---- - drivers/platform/x86/intel/int3472/discrete.c | 14 ++++++++++++++ - 1 file changed, 14 insertions(+) - -diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c -index ef020e23e596..d21ef437c2f6 100644 ---- a/drivers/platform/x86/intel/int3472/discrete.c -+++ b/drivers/platform/x86/intel/int3472/discrete.c -@@ -98,6 +98,9 @@ static int skl_int3472_map_gpio_to_sensor(struct int3472_discrete_device *int347 - { - const struct int3472_sensor_config *sensor_config; - char *path = agpio->resource_source.string_ptr; -+ const struct acpi_device_id ov7251_ids[] = { -+ { "INT347E" }, -+ }; - struct gpiod_lookup *table_entry; - struct acpi_device *adev; - acpi_handle handle; -@@ -120,6 +123,17 @@ static int skl_int3472_map_gpio_to_sensor(struct int3472_discrete_device *int347 - } - } - -+ /* -+ * In addition to the function remap table we need to bulk remap the -+ * "reset" GPIO for the OmniVision 7251 sensor, as the driver for that -+ * expects its only GPIO pin to be called "enable" (and to have the -+ * opposite polarity). -+ */ -+ if (!strcmp(func, "reset") && !acpi_match_device_ids(int3472->sensor, ov7251_ids)) { -+ func = "enable"; -+ polarity = GPIO_ACTIVE_HIGH; -+ } -+ - /* Functions mapped to NULL should not be mapped to the sensor */ - if (!func) - return 0; --- -2.42.0 - -From abc076db092192159821a8b8cba4d6d206b1b826 Mon Sep 17 00:00:00 2001 -From: Daniel Scally -Date: Tue, 21 Mar 2023 13:45:26 +0000 -Subject: [PATCH] media: i2c: Clarify that gain is Analogue gain in OV7251 - -Update the control ID for the gain control in the ov7251 driver to -V4L2_CID_ANALOGUE_GAIN. - -Signed-off-by: Daniel Scally -Patchset: cameras ---- - drivers/media/i2c/ov7251.c | 4 ++-- - 1 file changed, 2 insertions(+), 2 deletions(-) - -diff --git a/drivers/media/i2c/ov7251.c b/drivers/media/i2c/ov7251.c -index 88e987435285..ff7b2c26da83 100644 ---- a/drivers/media/i2c/ov7251.c -+++ b/drivers/media/i2c/ov7251.c -@@ -1051,7 +1051,7 @@ static int ov7251_s_ctrl(struct v4l2_ctrl *ctrl) - case V4L2_CID_EXPOSURE: - ret = ov7251_set_exposure(ov7251, ctrl->val); - break; -- case V4L2_CID_GAIN: -+ case V4L2_CID_ANALOGUE_GAIN: - ret = ov7251_set_gain(ov7251, ctrl->val); - break; - case V4L2_CID_TEST_PATTERN: -@@ -1551,7 +1551,7 @@ static int ov7251_init_ctrls(struct ov7251 *ov7251) - ov7251->exposure = v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops, - V4L2_CID_EXPOSURE, 1, 32, 1, 32); - ov7251->gain = v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops, -- V4L2_CID_GAIN, 16, 1023, 1, 16); -+ V4L2_CID_ANALOGUE_GAIN, 16, 1023, 1, 16); - v4l2_ctrl_new_std_menu_items(&ov7251->ctrls, &ov7251_ctrl_ops, - V4L2_CID_TEST_PATTERN, - ARRAY_SIZE(ov7251_test_pattern_menu) - 1, --- -2.42.0 - -From 698c1a2111fcd8edf2290663ae31c35be5645978 Mon Sep 17 00:00:00 2001 -From: Daniel Scally -Date: Wed, 22 Mar 2023 11:01:42 +0000 -Subject: [PATCH] media: v4l2-core: Acquire privacy led in - v4l2_async_register_subdev() - -The current call to v4l2_subdev_get_privacy_led() is contained in -v4l2_async_register_subdev_sensor(), but that function isn't used by -all the sensor drivers. Move the acquisition of the privacy led to -v4l2_async_register_subdev() instead. - -Signed-off-by: Daniel Scally -Patchset: cameras ---- - drivers/media/v4l2-core/v4l2-async.c | 4 ++++ - drivers/media/v4l2-core/v4l2-fwnode.c | 4 ---- - 2 files changed, 4 insertions(+), 4 deletions(-) - -diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c -index b16b5f4cb91e..33739a979cbc 100644 ---- a/drivers/media/v4l2-core/v4l2-async.c -+++ b/drivers/media/v4l2-core/v4l2-async.c -@@ -760,6 +760,10 @@ int v4l2_async_register_subdev(struct v4l2_subdev *sd) - struct v4l2_async_notifier *notifier; - int ret; - -+ ret = v4l2_subdev_get_privacy_led(sd); -+ if (ret < 0) -+ return ret; -+ - /* - * No reference taken. The reference is held by the device - * (struct v4l2_subdev.dev), and async sub-device does not -diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c -index 4fa9225aa3d9..ed4c75253cbc 100644 ---- a/drivers/media/v4l2-core/v4l2-fwnode.c -+++ b/drivers/media/v4l2-core/v4l2-fwnode.c -@@ -1314,10 +1314,6 @@ int v4l2_async_register_subdev_sensor(struct v4l2_subdev *sd) - - v4l2_async_nf_init(notifier); - -- ret = v4l2_subdev_get_privacy_led(sd); -- if (ret < 0) -- goto out_cleanup; -- - ret = v4l2_async_nf_parse_fwnode_sensor(sd->dev, notifier); - if (ret < 0) - goto out_cleanup; --- -2.42.0 - -From 3864b56bf152f15d200dccc5ae7192392cfcce2a Mon Sep 17 00:00:00 2001 -From: Kate Hsuan -Date: Tue, 21 Mar 2023 23:37:16 +0800 -Subject: [PATCH] platform: x86: int3472: Add MFD cell for tps68470 LED - -Add MFD cell for tps68470-led. - -Reviewed-by: Daniel Scally -Signed-off-by: Kate Hsuan -Reviewed-by: Hans de Goede -Patchset: cameras ---- - drivers/platform/x86/intel/int3472/tps68470.c | 5 +++-- - 1 file changed, 3 insertions(+), 2 deletions(-) - -diff --git a/drivers/platform/x86/intel/int3472/tps68470.c b/drivers/platform/x86/intel/int3472/tps68470.c -index 6a0ff035cf20..2a7d01d3abc8 100644 ---- a/drivers/platform/x86/intel/int3472/tps68470.c -+++ b/drivers/platform/x86/intel/int3472/tps68470.c -@@ -17,7 +17,7 @@ - #define DESIGNED_FOR_CHROMEOS 1 - #define DESIGNED_FOR_WINDOWS 2 - --#define TPS68470_WIN_MFD_CELL_COUNT 3 -+#define TPS68470_WIN_MFD_CELL_COUNT 4 - - static const struct mfd_cell tps68470_cros[] = { - { .name = "tps68470-gpio" }, -@@ -200,7 +200,8 @@ static int skl_int3472_tps68470_probe(struct i2c_client *client) - cells[1].name = "tps68470-regulator"; - cells[1].platform_data = (void *)board_data->tps68470_regulator_pdata; - cells[1].pdata_size = sizeof(struct tps68470_regulator_platform_data); -- cells[2].name = "tps68470-gpio"; -+ cells[2].name = "tps68470-led"; -+ cells[3].name = "tps68470-gpio"; - - for (i = 0; i < board_data->n_gpiod_lookups; i++) - gpiod_add_lookup_table(board_data->tps68470_gpio_lookup_tables[i]); --- -2.42.0 - -From 84145fddb4a55e49a6b9c3556d00d71c91b69e26 Mon Sep 17 00:00:00 2001 -From: Kate Hsuan -Date: Tue, 21 Mar 2023 23:37:17 +0800 -Subject: [PATCH] include: mfd: tps68470: Add masks for LEDA and LEDB - -Add flags for both LEDA(TPS68470_ILEDCTL_ENA), LEDB -(TPS68470_ILEDCTL_ENB), and current control mask for LEDB -(TPS68470_ILEDCTL_CTRLB) - -Reviewed-by: Daniel Scally -Reviewed-by: Hans de Goede -Signed-off-by: Kate Hsuan -Patchset: cameras ---- - include/linux/mfd/tps68470.h | 5 +++++ - 1 file changed, 5 insertions(+) - -diff --git a/include/linux/mfd/tps68470.h b/include/linux/mfd/tps68470.h -index 7807fa329db0..2d2abb25b944 100644 ---- a/include/linux/mfd/tps68470.h -+++ b/include/linux/mfd/tps68470.h -@@ -34,6 +34,7 @@ - #define TPS68470_REG_SGPO 0x22 - #define TPS68470_REG_GPDI 0x26 - #define TPS68470_REG_GPDO 0x27 -+#define TPS68470_REG_ILEDCTL 0x28 - #define TPS68470_REG_VCMVAL 0x3C - #define TPS68470_REG_VAUX1VAL 0x3D - #define TPS68470_REG_VAUX2VAL 0x3E -@@ -94,4 +95,8 @@ - #define TPS68470_GPIO_MODE_OUT_CMOS 2 - #define TPS68470_GPIO_MODE_OUT_ODRAIN 3 - -+#define TPS68470_ILEDCTL_ENA BIT(2) -+#define TPS68470_ILEDCTL_ENB BIT(6) -+#define TPS68470_ILEDCTL_CTRLB GENMASK(5, 4) -+ - #endif /* __LINUX_MFD_TPS68470_H */ --- -2.42.0 - -From 8af1b18be10e3236b9bf98323c6be2794b7c0747 Mon Sep 17 00:00:00 2001 -From: Kate Hsuan -Date: Tue, 21 Mar 2023 23:37:18 +0800 -Subject: [PATCH] leds: tps68470: Add LED control for tps68470 - -There are two LED controllers, LEDA indicator LED and LEDB flash LED for -tps68470. LEDA can be enabled by setting TPS68470_ILEDCTL_ENA. Moreover, -tps68470 provides four levels of power status for LEDB. If the -properties called "ti,ledb-current" can be found, the current will be -set according to the property values. These two LEDs can be controlled -through the LED class of sysfs (tps68470-leda and tps68470-ledb). - -Signed-off-by: Kate Hsuan -Reviewed-by: Hans de Goede -Patchset: cameras ---- - drivers/leds/Kconfig | 12 +++ - drivers/leds/Makefile | 1 + - drivers/leds/leds-tps68470.c | 185 +++++++++++++++++++++++++++++++++++ - 3 files changed, 198 insertions(+) - create mode 100644 drivers/leds/leds-tps68470.c - -diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig -index 2c5fdf848210..ead139f0df52 100644 ---- a/drivers/leds/Kconfig -+++ b/drivers/leds/Kconfig -@@ -841,6 +841,18 @@ config LEDS_TPS6105X - It is a single boost converter primarily for white LEDs and - audio amplifiers. - -+config LEDS_TPS68470 -+ tristate "LED support for TI TPS68470" -+ depends on LEDS_CLASS -+ depends on INTEL_SKL_INT3472 -+ help -+ This driver supports TPS68470 PMIC with LED chip. -+ It provides two LED controllers, with the ability to drive 2 -+ indicator LEDs and 2 flash LEDs. -+ -+ To compile this driver as a module, choose M and it will be -+ called leds-tps68470 -+ - config LEDS_IP30 - tristate "LED support for SGI Octane machines" - depends on LEDS_CLASS -diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile -index c07d1512c745..dd78cb6ef22e 100644 ---- a/drivers/leds/Makefile -+++ b/drivers/leds/Makefile -@@ -81,6 +81,7 @@ obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o - obj-$(CONFIG_LEDS_TI_LMU_COMMON) += leds-ti-lmu-common.o - obj-$(CONFIG_LEDS_TLC591XX) += leds-tlc591xx.o - obj-$(CONFIG_LEDS_TPS6105X) += leds-tps6105x.o -+obj-$(CONFIG_LEDS_TPS68470) += leds-tps68470.o - obj-$(CONFIG_LEDS_TURRIS_OMNIA) += leds-turris-omnia.o - obj-$(CONFIG_LEDS_WM831X_STATUS) += leds-wm831x-status.o - obj-$(CONFIG_LEDS_WM8350) += leds-wm8350.o -diff --git a/drivers/leds/leds-tps68470.c b/drivers/leds/leds-tps68470.c -new file mode 100644 -index 000000000000..35aeb5db89c8 ---- /dev/null -+++ b/drivers/leds/leds-tps68470.c -@@ -0,0 +1,185 @@ -+// SPDX-License-Identifier: GPL-2.0 -+/* -+ * LED driver for TPS68470 PMIC -+ * -+ * Copyright (C) 2023 Red Hat -+ * -+ * Authors: -+ * Kate Hsuan -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+#include -+ -+ -+#define lcdev_to_led(led_cdev) \ -+ container_of(led_cdev, struct tps68470_led, lcdev) -+ -+#define led_to_tps68470(led, index) \ -+ container_of(led, struct tps68470_device, leds[index]) -+ -+enum tps68470_led_ids { -+ TPS68470_ILED_A, -+ TPS68470_ILED_B, -+ TPS68470_NUM_LEDS -+}; -+ -+static const char *tps68470_led_names[] = { -+ [TPS68470_ILED_A] = "tps68470-iled_a", -+ [TPS68470_ILED_B] = "tps68470-iled_b", -+}; -+ -+struct tps68470_led { -+ unsigned int led_id; -+ struct led_classdev lcdev; -+}; -+ -+struct tps68470_device { -+ struct device *dev; -+ struct regmap *regmap; -+ struct tps68470_led leds[TPS68470_NUM_LEDS]; -+}; -+ -+enum ctrlb_current { -+ CTRLB_2MA = 0, -+ CTRLB_4MA = 1, -+ CTRLB_8MA = 2, -+ CTRLB_16MA = 3, -+}; -+ -+static int tps68470_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness) -+{ -+ struct tps68470_led *led = lcdev_to_led(led_cdev); -+ struct tps68470_device *tps68470 = led_to_tps68470(led, led->led_id); -+ struct regmap *regmap = tps68470->regmap; -+ -+ switch (led->led_id) { -+ case TPS68470_ILED_A: -+ return regmap_update_bits(regmap, TPS68470_REG_ILEDCTL, TPS68470_ILEDCTL_ENA, -+ brightness ? TPS68470_ILEDCTL_ENA : 0); -+ case TPS68470_ILED_B: -+ return regmap_update_bits(regmap, TPS68470_REG_ILEDCTL, TPS68470_ILEDCTL_ENB, -+ brightness ? TPS68470_ILEDCTL_ENB : 0); -+ } -+ return -EINVAL; -+} -+ -+static enum led_brightness tps68470_brightness_get(struct led_classdev *led_cdev) -+{ -+ struct tps68470_led *led = lcdev_to_led(led_cdev); -+ struct tps68470_device *tps68470 = led_to_tps68470(led, led->led_id); -+ struct regmap *regmap = tps68470->regmap; -+ int ret = 0; -+ int value = 0; -+ -+ ret = regmap_read(regmap, TPS68470_REG_ILEDCTL, &value); -+ if (ret) -+ return dev_err_probe(led_cdev->dev, -EINVAL, "failed on reading register\n"); -+ -+ switch (led->led_id) { -+ case TPS68470_ILED_A: -+ value = value & TPS68470_ILEDCTL_ENA; -+ break; -+ case TPS68470_ILED_B: -+ value = value & TPS68470_ILEDCTL_ENB; -+ break; -+ } -+ -+ return value ? LED_ON : LED_OFF; -+} -+ -+ -+static int tps68470_ledb_current_init(struct platform_device *pdev, -+ struct tps68470_device *tps68470) -+{ -+ int ret = 0; -+ unsigned int curr; -+ -+ /* configure LEDB current if the properties can be got */ -+ if (!device_property_read_u32(&pdev->dev, "ti,ledb-current", &curr)) { -+ if (curr > CTRLB_16MA) { -+ dev_err(&pdev->dev, -+ "Invalid LEDB current value: %d\n", -+ curr); -+ return -EINVAL; -+ } -+ ret = regmap_update_bits(tps68470->regmap, TPS68470_REG_ILEDCTL, -+ TPS68470_ILEDCTL_CTRLB, curr); -+ } -+ return ret; -+} -+ -+static int tps68470_leds_probe(struct platform_device *pdev) -+{ -+ int i = 0; -+ int ret = 0; -+ struct tps68470_device *tps68470; -+ struct tps68470_led *led; -+ struct led_classdev *lcdev; -+ -+ tps68470 = devm_kzalloc(&pdev->dev, sizeof(struct tps68470_device), -+ GFP_KERNEL); -+ if (!tps68470) -+ return -ENOMEM; -+ -+ tps68470->dev = &pdev->dev; -+ tps68470->regmap = dev_get_drvdata(pdev->dev.parent); -+ -+ for (i = 0; i < TPS68470_NUM_LEDS; i++) { -+ led = &tps68470->leds[i]; -+ lcdev = &led->lcdev; -+ -+ led->led_id = i; -+ -+ lcdev->name = devm_kasprintf(tps68470->dev, GFP_KERNEL, "%s::%s", -+ tps68470_led_names[i], LED_FUNCTION_INDICATOR); -+ if (!lcdev->name) -+ return -ENOMEM; -+ -+ lcdev->max_brightness = 1; -+ lcdev->brightness = 0; -+ lcdev->brightness_set_blocking = tps68470_brightness_set; -+ lcdev->brightness_get = tps68470_brightness_get; -+ lcdev->dev = &pdev->dev; -+ -+ ret = devm_led_classdev_register(tps68470->dev, lcdev); -+ if (ret) { -+ dev_err_probe(tps68470->dev, ret, -+ "error registering led\n"); -+ goto err_exit; -+ } -+ -+ if (i == TPS68470_ILED_B) { -+ ret = tps68470_ledb_current_init(pdev, tps68470); -+ if (ret) -+ goto err_exit; -+ } -+ } -+ -+err_exit: -+ if (ret) { -+ for (i = 0; i < TPS68470_NUM_LEDS; i++) { -+ if (tps68470->leds[i].lcdev.name) -+ devm_led_classdev_unregister(&pdev->dev, -+ &tps68470->leds[i].lcdev); -+ } -+ } -+ -+ return ret; -+} -+static struct platform_driver tps68470_led_driver = { -+ .driver = { -+ .name = "tps68470-led", -+ }, -+ .probe = tps68470_leds_probe, -+}; -+ -+module_platform_driver(tps68470_led_driver); -+ -+MODULE_ALIAS("platform:tps68470-led"); -+MODULE_DESCRIPTION("LED driver for TPS68470 PMIC"); -+MODULE_LICENSE("GPL v2"); --- -2.42.0 - diff --git a/patches/6.4/0012-amd-gpio.patch b/patches/6.4/0012-amd-gpio.patch deleted file mode 100644 index 9224504c5..000000000 --- a/patches/6.4/0012-amd-gpio.patch +++ /dev/null @@ -1,109 +0,0 @@ -From 5a48de44411bdd2aa8112a09c721af53a432791b Mon Sep 17 00:00:00 2001 -From: Sachi King -Date: Sat, 29 May 2021 17:47:38 +1000 -Subject: [PATCH] ACPI: Add quirk for Surface Laptop 4 AMD missing irq 7 - override - -This patch is the work of Thomas Gleixner and is -copied from: -https://lore.kernel.org/lkml/87lf8ddjqx.ffs@nanos.tec.linutronix.de/ - -This patch adds a quirk to the ACPI setup to patch in the the irq 7 pin -setup that is missing in the laptops ACPI table. - -This patch was used for validation of the issue, and is not a proper -fix, but is probably a better temporary hack than continuing to probe -the Legacy PIC and run with the PIC in an unknown state. - -Patchset: amd-gpio ---- - arch/x86/kernel/acpi/boot.c | 17 +++++++++++++++++ - 1 file changed, 17 insertions(+) - -diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c -index 53369c57751e..1ec1a9015178 100644 ---- a/arch/x86/kernel/acpi/boot.c -+++ b/arch/x86/kernel/acpi/boot.c -@@ -22,6 +22,7 @@ - #include - #include - #include -+#include - - #include - #include -@@ -1256,6 +1257,17 @@ static void __init mp_config_acpi_legacy_irqs(void) - } - } - -+static const struct dmi_system_id surface_quirk[] __initconst = { -+ { -+ .ident = "Microsoft Surface Laptop 4 (AMD)", -+ .matches = { -+ DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), -+ DMI_MATCH(DMI_PRODUCT_SKU, "Surface_Laptop_4_1952:1953") -+ }, -+ }, -+ {} -+}; -+ - /* - * Parse IOAPIC related entries in MADT - * returns 0 on success, < 0 on error -@@ -1311,6 +1323,11 @@ static int __init acpi_parse_madt_ioapic_entries(void) - acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0, - acpi_gbl_FADT.sci_interrupt); - -+ if (dmi_check_system(surface_quirk)) { -+ pr_warn("Surface hack: Override irq 7\n"); -+ mp_override_legacy_irq(7, 3, 3, 7); -+ } -+ - /* Fill in identity legacy mappings where no override */ - mp_config_acpi_legacy_irqs(); - --- -2.42.0 - -From 392d7ad028302a7fe48ef1dc87ba037aa8f50c93 Mon Sep 17 00:00:00 2001 -From: Maximilian Luz -Date: Thu, 3 Jun 2021 14:04:26 +0200 -Subject: [PATCH] ACPI: Add AMD 13" Surface Laptop 4 model to irq 7 override - quirk - -The 13" version of the Surface Laptop 4 has the same problem as the 15" -version, but uses a different SKU. Add that SKU to the quirk as well. - -Patchset: amd-gpio ---- - arch/x86/kernel/acpi/boot.c | 9 ++++++++- - 1 file changed, 8 insertions(+), 1 deletion(-) - -diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c -index 1ec1a9015178..a7d40015e46a 100644 ---- a/arch/x86/kernel/acpi/boot.c -+++ b/arch/x86/kernel/acpi/boot.c -@@ -1259,12 +1259,19 @@ static void __init mp_config_acpi_legacy_irqs(void) - - static const struct dmi_system_id surface_quirk[] __initconst = { - { -- .ident = "Microsoft Surface Laptop 4 (AMD)", -+ .ident = "Microsoft Surface Laptop 4 (AMD 15\")", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), - DMI_MATCH(DMI_PRODUCT_SKU, "Surface_Laptop_4_1952:1953") - }, - }, -+ { -+ .ident = "Microsoft Surface Laptop 4 (AMD 13\")", -+ .matches = { -+ DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), -+ DMI_MATCH(DMI_PRODUCT_SKU, "Surface_Laptop_4_1958:1959") -+ }, -+ }, - {} - }; - --- -2.42.0 - diff --git a/patches/6.4/0013-rtc.patch b/patches/6.4/0013-rtc.patch deleted file mode 100644 index 76ffca9fe..000000000 --- a/patches/6.4/0013-rtc.patch +++ /dev/null @@ -1,109 +0,0 @@ -From ae845ee6a2a7b3a080d791a3fe1c52e3fc5783ec Mon Sep 17 00:00:00 2001 -From: "Bart Groeneveld | GPX Solutions B.V" -Date: Mon, 5 Dec 2022 16:08:46 +0100 -Subject: [PATCH] acpi: allow usage of acpi_tad on HW-reduced platforms - -The specification [1] allows so-called HW-reduced platforms, -which do not implement everything, especially the wakeup related stuff. - -In that case, it is still usable as a RTC. This is helpful for [2] -and [3], which is about a device with no other working RTC, -but it does have an HW-reduced TAD, which can be used as a RTC instead. - -[1]: https://uefi.org/specs/ACPI/6.5/09_ACPI_Defined_Devices_and_Device_Specific_Objects.html#time-and-alarm-device -[2]: https://bugzilla.kernel.org/show_bug.cgi?id=212313 -[3]: https://github.com/linux-surface/linux-surface/issues/415 - -Signed-off-by: Bart Groeneveld | GPX Solutions B.V. -Patchset: rtc ---- - drivers/acpi/acpi_tad.c | 35 ++++++++++++++++++++++++----------- - 1 file changed, 24 insertions(+), 11 deletions(-) - -diff --git a/drivers/acpi/acpi_tad.c b/drivers/acpi/acpi_tad.c -index e9b8e8305e23..944276934e7e 100644 ---- a/drivers/acpi/acpi_tad.c -+++ b/drivers/acpi/acpi_tad.c -@@ -432,6 +432,14 @@ static ssize_t caps_show(struct device *dev, struct device_attribute *attr, - - static DEVICE_ATTR_RO(caps); - -+static struct attribute *acpi_tad_attrs[] = { -+ &dev_attr_caps.attr, -+ NULL, -+}; -+static const struct attribute_group acpi_tad_attr_group = { -+ .attrs = acpi_tad_attrs, -+}; -+ - static ssize_t ac_alarm_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) - { -@@ -480,15 +488,14 @@ static ssize_t ac_status_show(struct device *dev, struct device_attribute *attr, - - static DEVICE_ATTR_RW(ac_status); - --static struct attribute *acpi_tad_attrs[] = { -- &dev_attr_caps.attr, -+static struct attribute *acpi_tad_ac_attrs[] = { - &dev_attr_ac_alarm.attr, - &dev_attr_ac_policy.attr, - &dev_attr_ac_status.attr, - NULL, - }; --static const struct attribute_group acpi_tad_attr_group = { -- .attrs = acpi_tad_attrs, -+static const struct attribute_group acpi_tad_ac_attr_group = { -+ .attrs = acpi_tad_ac_attrs, - }; - - static ssize_t dc_alarm_store(struct device *dev, struct device_attribute *attr, -@@ -563,13 +570,18 @@ static int acpi_tad_remove(struct platform_device *pdev) - - pm_runtime_get_sync(dev); - -+ if (dd->capabilities & ACPI_TAD_AC_WAKE) -+ sysfs_remove_group(&dev->kobj, &acpi_tad_ac_attr_group); -+ - if (dd->capabilities & ACPI_TAD_DC_WAKE) - sysfs_remove_group(&dev->kobj, &acpi_tad_dc_attr_group); - - sysfs_remove_group(&dev->kobj, &acpi_tad_attr_group); - -- acpi_tad_disable_timer(dev, ACPI_TAD_AC_TIMER); -- acpi_tad_clear_status(dev, ACPI_TAD_AC_TIMER); -+ if (dd->capabilities & ACPI_TAD_AC_WAKE) { -+ acpi_tad_disable_timer(dev, ACPI_TAD_AC_TIMER); -+ acpi_tad_clear_status(dev, ACPI_TAD_AC_TIMER); -+ } - if (dd->capabilities & ACPI_TAD_DC_WAKE) { - acpi_tad_disable_timer(dev, ACPI_TAD_DC_TIMER); - acpi_tad_clear_status(dev, ACPI_TAD_DC_TIMER); -@@ -604,11 +616,6 @@ static int acpi_tad_probe(struct platform_device *pdev) - return -ENODEV; - } - -- if (!acpi_has_method(handle, "_PRW")) { -- dev_info(dev, "Missing _PRW\n"); -- return -ENODEV; -- } -- - dd = devm_kzalloc(dev, sizeof(*dd), GFP_KERNEL); - if (!dd) - return -ENOMEM; -@@ -637,6 +644,12 @@ static int acpi_tad_probe(struct platform_device *pdev) - if (ret) - goto fail; - -+ if (caps & ACPI_TAD_AC_WAKE) { -+ ret = sysfs_create_group(&dev->kobj, &acpi_tad_ac_attr_group); -+ if (ret) -+ goto fail; -+ } -+ - if (caps & ACPI_TAD_DC_WAKE) { - ret = sysfs_create_group(&dev->kobj, &acpi_tad_dc_attr_group); - if (ret) --- -2.42.0 -