441a362da9
Changes: - SAM - Properly re-enable events after hibernation. - Other bugfixes. - Continued work on internal documentation. - mwifiex - Fix bug causing network connection failure on certain networks. Links: - SAM:735a01f74b- mwifiex: https://lkml.org/lkml/2020/8/27/642 - kernel:d9aab7bed9
356 lines
9.6 KiB
Diff
356 lines
9.6 KiB
Diff
From a151e4b8740bd6dd4fe439a217a58f24f5127621 Mon Sep 17 00:00:00 2001
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From: Maximilian Luz <luzmaximilian@gmail.com>
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Date: Sun, 16 Aug 2020 23:39:56 +0200
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Subject: [PATCH 6/6] surface-gpe
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---
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drivers/platform/x86/Kconfig | 9 +
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drivers/platform/x86/Makefile | 1 +
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drivers/platform/x86/surface_gpe.c | 302 +++++++++++++++++++++++++++++
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3 files changed, 312 insertions(+)
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create mode 100644 drivers/platform/x86/surface_gpe.c
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diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
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index 0ad7ad8cf8e17..47e75acd6c333 100644
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--- a/drivers/platform/x86/Kconfig
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+++ b/drivers/platform/x86/Kconfig
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@@ -868,6 +868,15 @@ config SURFACE_PRO3_BUTTON
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---help---
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This driver handles the power/home/volume buttons on the Microsoft Surface Pro 3/4 tablet.
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+config SURFACE_GPE
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+ tristate "Surface GPE/Lid Driver"
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+ depends on ACPI
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+ help
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+ This driver marks the GPEs related to the ACPI lid device found on
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+ Microsoft Surface devices as wakeup sources and prepares them
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+ accordingly. It is required on those devices to allow wake-ups from
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+ suspend by opening the lid.
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+
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config MSI_LAPTOP
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tristate "MSI Laptop Extras"
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depends on ACPI
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diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
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index 53408d9658740..0df0165ba340b 100644
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--- a/drivers/platform/x86/Makefile
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+++ b/drivers/platform/x86/Makefile
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@@ -84,6 +84,7 @@ obj-$(CONFIG_SURFACE3_WMI) += surface3-wmi.o
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obj-$(CONFIG_SURFACE_3_BUTTON) += surface3_button.o
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obj-$(CONFIG_SURFACE_3_POWER_OPREGION) += surface3_power.o
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obj-$(CONFIG_SURFACE_PRO3_BUTTON) += surfacepro3_button.o
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+obj-$(CONFIG_SURFACE_GPE) += surface_gpe.o
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# MSI
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obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o
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diff --git a/drivers/platform/x86/surface_gpe.c b/drivers/platform/x86/surface_gpe.c
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new file mode 100644
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index 0000000000000..3031a94cddeb7
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--- /dev/null
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+++ b/drivers/platform/x86/surface_gpe.c
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@@ -0,0 +1,302 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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+/*
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+ * Surface GPE/Lid driver to enable wakeup from suspend via the lid by
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+ * properly configuring the respective GPEs.
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+ */
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+
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+#include <linux/acpi.h>
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+#include <linux/dmi.h>
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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+
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+
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+struct surface_lid_device {
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+ u32 gpe_number;
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+};
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+
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+static const struct surface_lid_device lid_device_l17 = {
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+ .gpe_number = 0x17,
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+};
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+
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+static const struct surface_lid_device lid_device_l4D = {
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+ .gpe_number = 0x4D,
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+};
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+
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+static const struct surface_lid_device lid_device_l4F = {
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+ .gpe_number = 0x4F,
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+};
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+
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+static const struct surface_lid_device lid_device_l57 = {
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+ .gpe_number = 0x57,
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+};
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+
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+
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+// Note: When changing this don't forget to change the MODULE_ALIAS below.
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+static const struct dmi_system_id dmi_lid_device_table[] = {
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+ {
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+ .ident = "Surface Pro 4",
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+ .matches = {
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"),
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+ },
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+ .driver_data = (void *)&lid_device_l17,
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+ },
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+ {
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+ .ident = "Surface Pro 5",
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+ .matches = {
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+ /*
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+ * We match for SKU here due to generic product name
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+ * "Surface Pro".
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+ */
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"),
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+ },
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+ .driver_data = (void *)&lid_device_l4F,
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+ },
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+ {
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+ .ident = "Surface Pro 5 (LTE)",
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+ .matches = {
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+ /*
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+ * We match for SKU here due to generic product name
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+ * "Surface Pro"
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+ */
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"),
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+ },
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+ .driver_data = (void *)&lid_device_l4F,
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+ },
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+ {
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+ .ident = "Surface Pro 6",
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+ .matches = {
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"),
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+ },
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+ .driver_data = (void *)&lid_device_l4F,
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+ },
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+ {
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+ .ident = "Surface Pro 7",
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+ .matches = {
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 7"),
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+ },
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+ .driver_data = (void *)&lid_device_l4D,
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+ },
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+ {
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+ .ident = "Surface Book 1",
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+ .matches = {
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"),
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+ },
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+ .driver_data = (void *)&lid_device_l17,
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+ },
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+ {
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+ .ident = "Surface Book 2",
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+ .matches = {
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"),
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+ },
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+ .driver_data = (void *)&lid_device_l17,
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+ },
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+ {
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+ .ident = "Surface Book 3",
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+ .matches = {
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 3"),
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+ },
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+ .driver_data = (void *)&lid_device_l4D,
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+ },
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+ {
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+ .ident = "Surface Laptop 1",
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+ .matches = {
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"),
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+ },
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+ .driver_data = (void *)&lid_device_l57,
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+ },
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+ {
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+ .ident = "Surface Laptop 2",
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+ .matches = {
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"),
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+ },
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+ .driver_data = (void *)&lid_device_l57,
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+ },
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+ {
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+ .ident = "Surface Laptop 3 (Intel 13\")",
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+ .matches = {
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+ /*
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+ * We match for SKU here due to different vairants: The
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+ * AMD (15") version does not rely on GPEs.
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+ */
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+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
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+ DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Laptop_3_1867:1868"),
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+ },
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+ .driver_data = (void *)&lid_device_l4D,
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+ },
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+ { }
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+};
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+
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+
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+static int surface_lid_enable_wakeup(struct device *dev,
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+ const struct surface_lid_device *lid,
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+ bool enable)
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+{
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+ int action = enable ? ACPI_GPE_ENABLE : ACPI_GPE_DISABLE;
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+ acpi_status status;
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+
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+ status = acpi_set_gpe_wake_mask(NULL, lid->gpe_number, action);
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+ if (status) {
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+ dev_err(dev, "failed to set GPE wake mask: %d\n", status);
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+ return -EINVAL;
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+ }
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+
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+ return 0;
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+}
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+
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+
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+static int surface_gpe_suspend(struct device *dev)
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+{
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+ const struct surface_lid_device *lid;
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+
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+ lid = dev_get_platdata(dev);
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+ return surface_lid_enable_wakeup(dev, lid, true);
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+}
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+
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+static int surface_gpe_resume(struct device *dev)
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+{
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+ const struct surface_lid_device *lid;
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+
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+ lid = dev_get_platdata(dev);
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+ return surface_lid_enable_wakeup(dev, lid, false);
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+}
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+
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+static SIMPLE_DEV_PM_OPS(surface_gpe_pm, surface_gpe_suspend, surface_gpe_resume);
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+
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+
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+static int surface_gpe_probe(struct platform_device *pdev)
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+{
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+ const struct surface_lid_device *lid;
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+ int status;
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+
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+ lid = dev_get_platdata(&pdev->dev);
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+ if (!lid)
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+ return -ENODEV;
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+
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+ status = acpi_mark_gpe_for_wake(NULL, lid->gpe_number);
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+ if (status) {
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+ dev_err(&pdev->dev, "failed to mark GPE for wake: %d\n", status);
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+ return -EINVAL;
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+ }
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+
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+ status = acpi_enable_gpe(NULL, lid->gpe_number);
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+ if (status) {
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+ dev_err(&pdev->dev, "failed to enable GPE: %d\n", status);
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+ return -EINVAL;
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+ }
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+
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+ status = surface_lid_enable_wakeup(&pdev->dev, lid, false);
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+ if (status) {
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+ acpi_disable_gpe(NULL, lid->gpe_number);
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+ return status;
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+ }
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+
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+ return 0;
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+}
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+
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+static int surface_gpe_remove(struct platform_device *pdev)
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+{
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+ struct surface_lid_device *lid = dev_get_platdata(&pdev->dev);
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+
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+ /* restore default behavior without this module */
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+ surface_lid_enable_wakeup(&pdev->dev, lid, false);
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+ acpi_disable_gpe(NULL, lid->gpe_number);
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+
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+ return 0;
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+}
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+
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+static struct platform_driver surface_gpe_driver = {
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+ .probe = surface_gpe_probe,
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+ .remove = surface_gpe_remove,
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+ .driver = {
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+ .name = "surface_gpe",
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+ .pm = &surface_gpe_pm,
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+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
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+ },
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+};
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+
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+
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+static struct platform_device *surface_gpe_device;
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+
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+static int __init surface_gpe_init(void)
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+{
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+ const struct dmi_system_id *match;
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+ const struct surface_lid_device *lid;
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+
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+ struct platform_device *pdev;
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+ int status;
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+
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+ surface_gpe_device = NULL;
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+
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+ match = dmi_first_match(dmi_lid_device_table);
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+ if (!match) {
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+ pr_info(KBUILD_MODNAME": no device detected, exiting\n");
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+ return 0;
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+ }
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+
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+ lid = match->driver_data;
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+
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+ status = platform_driver_register(&surface_gpe_driver);
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+ if (status)
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+ return status;
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+
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+ pdev = platform_device_alloc("surface_gpe", PLATFORM_DEVID_NONE);
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+ if (!pdev) {
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+ platform_driver_unregister(&surface_gpe_driver);
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+ return -ENOMEM;
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+ }
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+
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+ status = platform_device_add_data(pdev, lid, sizeof(*lid));
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+ if (status) {
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+ platform_device_put(pdev);
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+ platform_driver_unregister(&surface_gpe_driver);
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+ return status;
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+ }
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+
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+ status = platform_device_add(pdev);
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+ if (status) {
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+ platform_device_put(pdev);
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+ platform_driver_unregister(&surface_gpe_driver);
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+ return status;
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+ }
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+
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+ surface_gpe_device = pdev;
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+ return 0;
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+}
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+
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+static void __exit surface_gpe_exit(void)
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+{
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+ if (!surface_gpe_device)
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+ return;
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+
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+ platform_device_unregister(surface_gpe_device);
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+ platform_driver_unregister(&surface_gpe_driver);
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+}
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+
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+module_init(surface_gpe_init);
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+module_exit(surface_gpe_exit);
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+
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+MODULE_AUTHOR("Maximilian Luz <luzmaximilian@gmail.com>");
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+MODULE_DESCRIPTION("Surface GPE/Lid Driver");
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+MODULE_LICENSE("GPL");
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+
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfacePro:*");
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfacePro4:*");
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfacePro6:*");
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfacePro7:*");
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfaceBook:*");
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfaceBook2:*");
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfaceBook3:*");
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfaceLaptop:*");
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfaceLaptop2:*");
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+MODULE_ALIAS("dmi:*:svnMicrosoftCorporation:pnSurfaceLaptop3:*");
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--
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2.28.0
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