969a0197f6
Add support for Surface Laptop 3 keyboard as well as Surface Laptop 3 and Surface Pro 7 Battery/AC.
111 lines
3.7 KiB
Diff
111 lines
3.7 KiB
Diff
From 45a30685cf30d7ea4f07d6b3a86aac80feccf32d Mon Sep 17 00:00:00 2001
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From: Tuowen Zhao <ztuowen@gmail.com>
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Date: Wed, 16 Oct 2019 15:06:27 -0600
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Subject: [PATCH 13/13] ioremap_uc
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---
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Documentation/driver-model/devres.txt | 1 +
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arch/sparc/include/asm/io_64.h | 1 +
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drivers/mfd/intel-lpss.c | 2 +-
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include/linux/io.h | 2 ++
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lib/devres.c | 19 +++++++++++++++++++
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5 files changed, 24 insertions(+), 1 deletion(-)
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diff --git a/Documentation/driver-model/devres.txt b/Documentation/driver-model/devres.txt
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index 43681ca0837f..7b1ee4190208 100644
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--- a/Documentation/driver-model/devres.txt
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+++ b/Documentation/driver-model/devres.txt
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@@ -294,6 +294,7 @@ IOMAP
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devm_ioport_unmap()
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devm_ioremap()
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devm_ioremap_nocache()
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+ devm_ioremap_uc()
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devm_ioremap_wc()
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devm_ioremap_resource() : checks resource, requests memory region, ioremaps
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devm_iounmap()
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diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
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index b162c23ae8c2..7a836d21ff0c 100644
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--- a/arch/sparc/include/asm/io_64.h
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+++ b/arch/sparc/include/asm/io_64.h
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@@ -409,6 +409,7 @@ static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
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}
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#define ioremap_nocache(X,Y) ioremap((X),(Y))
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+#define ioremap_uc(X,Y) ioremap((X),(Y))
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#define ioremap_wc(X,Y) ioremap((X),(Y))
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#define ioremap_wt(X,Y) ioremap((X),(Y))
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diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c
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index ff3fba16e735..37a5bb09d228 100644
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--- a/drivers/mfd/intel-lpss.c
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+++ b/drivers/mfd/intel-lpss.c
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@@ -397,7 +397,7 @@ int intel_lpss_probe(struct device *dev,
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if (!lpss)
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return -ENOMEM;
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- lpss->priv = devm_ioremap(dev, info->mem->start + LPSS_PRIV_OFFSET,
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+ lpss->priv = devm_ioremap_uc(dev, info->mem->start + LPSS_PRIV_OFFSET,
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LPSS_PRIV_SIZE);
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if (!lpss->priv)
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return -ENOMEM;
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diff --git a/include/linux/io.h b/include/linux/io.h
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index 32e30e8fb9db..da39ff89df65 100644
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--- a/include/linux/io.h
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+++ b/include/linux/io.h
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@@ -75,6 +75,8 @@ static inline void devm_ioport_unmap(struct device *dev, void __iomem *addr)
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void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
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resource_size_t size);
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+void __iomem *devm_ioremap_uc(struct device *dev, resource_size_t offset,
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+ resource_size_t size);
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void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
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resource_size_t size);
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void __iomem *devm_ioremap_wc(struct device *dev, resource_size_t offset,
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diff --git a/lib/devres.c b/lib/devres.c
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index faccf1a037d0..97c56f9893a4 100644
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--- a/lib/devres.c
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+++ b/lib/devres.c
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@@ -9,6 +9,7 @@
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enum devm_ioremap_type {
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DEVM_IOREMAP = 0,
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DEVM_IOREMAP_NC,
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+ DEVM_IOREMAP_UC,
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DEVM_IOREMAP_WC,
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};
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@@ -39,6 +40,9 @@ static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset,
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case DEVM_IOREMAP_NC:
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addr = ioremap_nocache(offset, size);
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break;
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+ case DEVM_IOREMAP_UC:
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+ addr = ioremap_uc(offset, size);
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+ break;
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case DEVM_IOREMAP_WC:
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addr = ioremap_wc(offset, size);
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break;
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@@ -68,6 +72,21 @@ void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
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}
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EXPORT_SYMBOL(devm_ioremap);
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+/**
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+ * devm_ioremap_uc - Managed ioremap_uc()
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+ * @dev: Generic device to remap IO address for
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+ * @offset: Resource address to map
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+ * @size: Size of map
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+ *
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+ * Managed ioremap_uc(). Map is automatically unmapped on driver detach.
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+ */
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+void __iomem *devm_ioremap_uc(struct device *dev, resource_size_t offset,
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+ resource_size_t size)
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+{
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+ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_UC);
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+}
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+EXPORT_SYMBOL_GPL(devm_ioremap_uc);
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+
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/**
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* devm_ioremap_nocache - Managed ioremap_nocache()
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* @dev: Generic device to remap IO address for
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--
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2.24.0
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