From: Pankaj Dubey <pankaj.dubey@samsung.com>
Date: Fri, 18 Jul 2014 18:43:22 +0000 (+0900)
Subject: ARM: EXYNOS: Refactored code for using PMU address via DT
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~122^2~14^2~1
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2e94ac42898f84d76e3c21dd91bcd1c51c920dff;p=pandora-kernel.git

ARM: EXYNOS: Refactored code for using PMU address via DT

Under "arm/mach-exynos" many files are using PMU register offsets.
Since we have added support for accessing PMU base address via DT,
now we can remove PMU mapping from exynosX_iodesc. Let's convert
all these access using iomapped address.
This will help us in removing static mapping of PMU base address
as well as help in reducing dependency over machine header files.
Thus helping for migration of PMU implementation from machine to
driver folder which can be reused for ARM64 based SoC.

Also as we have removed static mappings from "regs-pmu.h" it does
not need map.h anymore. But "platsmp.c" needed this and till now it
got included indirectly. So lets move header inclusion of
"mach/map.h" from "regs-pmu.h" to "platsmp.c".

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
---

diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index f8daa9cc5617..47b904b3b973 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -134,7 +134,7 @@ extern void exynos_cpu_die(unsigned int cpu);
 
 /* PMU(Power Management Unit) support */
 
-#define PMU_TABLE_END	NULL
+#define PMU_TABLE_END	(-1U)
 
 enum sys_powerdown {
 	SYS_AFTR,
@@ -144,7 +144,7 @@ enum sys_powerdown {
 };
 
 struct exynos_pmu_conf {
-	void __iomem *reg;
+	unsigned int offset;
 	unsigned int val[NUM_SYS_POWERDOWN];
 };
 
@@ -160,4 +160,14 @@ extern void exynos_enter_aftr(void);
 extern void s5p_init_cpu(void __iomem *cpuid_addr);
 extern unsigned int samsung_rev(void);
 
+static inline void pmu_raw_writel(u32 val, u32 offset)
+{
+	__raw_writel(val, pmu_base_addr + offset);
+}
+
+static inline u32 pmu_raw_readl(u32 offset)
+{
+	return __raw_readl(pmu_base_addr + offset);
+}
+
 #endif /* __ARCH_ARM_MACH_EXYNOS_COMMON_H */
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 2a43a1734eca..5eaf878af528 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -60,11 +60,6 @@ static struct map_desc exynos4_iodesc[] __initdata = {
 		.pfn		= __phys_to_pfn(EXYNOS4_PA_SYSTIMER),
 		.length		= SZ_4K,
 		.type		= MT_DEVICE,
-	}, {
-		.virtual	= (unsigned long)S5P_VA_PMU,
-		.pfn		= __phys_to_pfn(EXYNOS4_PA_PMU),
-		.length		= SZ_64K,
-		.type		= MT_DEVICE,
 	}, {
 		.virtual	= (unsigned long)S5P_VA_COMBINER_BASE,
 		.pfn		= __phys_to_pfn(EXYNOS4_PA_COMBINER),
@@ -139,11 +134,6 @@ static struct map_desc exynos5_iodesc[] __initdata = {
 		.pfn		= __phys_to_pfn(EXYNOS5_PA_CMU),
 		.length		= 144 * SZ_1K,
 		.type		= MT_DEVICE,
-	}, {
-		.virtual	= (unsigned long)S5P_VA_PMU,
-		.pfn		= __phys_to_pfn(EXYNOS5_PA_PMU),
-		.length		= SZ_64K,
-		.type		= MT_DEVICE,
 	},
 };
 
@@ -151,7 +141,7 @@ static void exynos_restart(enum reboot_mode mode, const char *cmd)
 {
 	struct device_node *np;
 	u32 val = 0x1;
-	void __iomem *addr = EXYNOS_SWRESET;
+	void __iomem *addr = pmu_base_addr + EXYNOS_SWRESET;
 
 	if (of_machine_is_compatible("samsung,exynos5440")) {
 		u32 status;
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