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Subject[PATCH 2/2] msm: io: Change the default static iomappings to be shared
Date
With 3.4 kernel the static iomappings can be shared with the ioremap
mappings. If ioremap is called with an address for which a static
mapping already exists, then that mapping should be used instead
of creating a new one.
However, the MT_DEVICE_NONSHARED flag prevents this. Hence, get rid
of this flag. Some targets (7X00) that require the static iomappings
to be NONSHARED use the MSM_DEVICE_TYPE and MSM_CHIP_DEVICE_TYPE macros.

Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
---
arch/arm/mach-msm/io.c | 25 +++++++++++++++++--------
1 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/arch/arm/mach-msm/io.c b/arch/arm/mach-msm/io.c
index 61d61cb..9f4b4ba 100644
--- a/arch/arm/mach-msm/io.c
+++ b/arch/arm/mach-msm/io.c
@@ -33,23 +33,32 @@
.virtual = (unsigned long) MSM_##name##_BASE, \
.pfn = __phys_to_pfn(chip##_##name##_PHYS), \
.length = chip##_##name##_SIZE, \
- .type = MT_DEVICE_NONSHARED, \
+ .type = MT_DEVICE, \
+ }
+
+#define MSM_CHIP_DEVICE_TYPE(name, chip, mem_type) { \
+ .virtual = (unsigned long) MSM_##name##_BASE, \
+ .pfn = __phys_to_pfn(chip##_##name##_PHYS), \
+ .length = chip##_##name##_SIZE, \
+ .type = mem_type, \
}

#define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
+#define MSM_DEVICE_TYPE(name, mem_type) \
+ MSM_CHIP_DEVICE_TYPE(name, MSM, mem_type)

#if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_MSM7X27) \
|| defined(CONFIG_ARCH_MSM7X25)
static struct map_desc msm_io_desc[] __initdata = {
- MSM_DEVICE(VIC),
- MSM_CHIP_DEVICE(CSR, MSM7X00),
- MSM_DEVICE(DMOV),
- MSM_CHIP_DEVICE(GPIO1, MSM7X00),
- MSM_CHIP_DEVICE(GPIO2, MSM7X00),
- MSM_CHIP_DEVICE(CLK_CTL, MSM7X00),
+ MSM_DEVICE_TYPE(VIC, MT_DEVICE_NONSHARED),
+ MSM_CHIP_DEVICE_TYPE(CSR, MSM7X00, MT_DEVICE_NONSHARED),
+ MSM_DEVICE_TYPE(DMOV, MT_DEVICE_NONSHARED),
+ MSM_CHIP_DEVICE_TYPE(GPIO1, MSM7X00, MT_DEVICE_NONSHARED),
+ MSM_CHIP_DEVICE_TYPE(GPIO2, MSM7X00, MT_DEVICE_NONSHARED),
+ MSM_CHIP_DEVICE_TYPE(CLK_CTL, MSM7X00, MT_DEVICE_NONSHARED),
#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
defined(CONFIG_DEBUG_MSM_UART3)
- MSM_DEVICE(DEBUG_UART),
+ MSM_DEVICE_TYPE(DEBUG_UART, MT_DEVICE_NONSHARED),
#endif
{
.virtual = (unsigned long) MSM_SHARED_RAM_BASE,
--
Sent by an employee of the Qualcomm Innovation Center,Inc
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.


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