Merge branch 'next/devel-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc

From Kukjin Kim <kgene.kim@samsung.com>:

This is general development for Samsung stuff for v3.6

* 'next/devel-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: SAMSUNG: Introduce Kconfig variable for Samsung custom clk API
  ARM: EXYNOS: Add missing static storage class specifier in pmu.c file
  ARM: EXYNOS: Make combiner_init function static
  ARM: EXYNOS: Update HSOTG PHY clock setting for EXYNOS4X12
  ARM: EXYNOS: Clear SYS_WDTRESET bit to use watchdog reset

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

8 files changed, 92 insertions, 26 deletions

diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 742edd3bbec..1b0922cda4a 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -540,7 +540,8 @@ static struct irq_domain_ops combiner_irq_domain_ops = {
 	.map	= combiner_irq_domain_map,
 };
 
-void __init combiner_init(void __iomem *combiner_base, struct device_node *np)
+static void __init combiner_init(void __iomem *combiner_base,
+				 struct device_node *np)
 {
 	int i, irq, irq_base;
 	unsigned int max_nr, nr_irq;
diff --git a/arch/arm/mach-exynos/include/mach/regs-pmu.h b/arch/arm/mach-exynos/include/mach/regs-pmu.h
index 43a99e6f56a..d4e392b811a 100644
--- a/arch/arm/mach-exynos/include/mach/regs-pmu.h
+++ b/arch/arm/mach-exynos/include/mach/regs-pmu.h
@@ -232,6 +232,11 @@
 
 #define EXYNOS5_USB_CFG						S5P_PMUREG(0x0230)
 
+#define EXYNOS5_AUTO_WDTRESET_DISABLE				S5P_PMUREG(0x0408)
+#define EXYNOS5_MASK_WDTRESET_REQUEST				S5P_PMUREG(0x040C)
+
+#define EXYNOS5_SYS_WDTRESET					(1 << 20)
+
 #define EXYNOS5_ARM_CORE0_SYS_PWR_REG				S5P_PMUREG(0x1000)
 #define EXYNOS5_DIS_IRQ_ARM_CORE0_LOCAL_SYS_PWR_REG		S5P_PMUREG(0x1004)
 #define EXYNOS5_DIS_IRQ_ARM_CORE0_CENTRAL_SYS_PWR_REG		S5P_PMUREG(0x1008)
diff --git a/arch/arm/mach-exynos/include/mach/regs-usb-phy.h b/arch/arm/mach-exynos/include/mach/regs-usb-phy.h
index c337cf3a71b..07277735252 100644
--- a/arch/arm/mach-exynos/include/mach/regs-usb-phy.h
+++ b/arch/arm/mach-exynos/include/mach/regs-usb-phy.h
@@ -35,11 +35,21 @@
 #define PHY1_COMMON_ON_N		(1 << 7)
 #define PHY0_COMMON_ON_N		(1 << 4)
 #define PHY0_ID_PULLUP			(1 << 2)
-#define CLKSEL_MASK			(0x3 << 0)
-#define CLKSEL_SHIFT			(0)
-#define CLKSEL_48M			(0x0 << 0)
-#define CLKSEL_12M			(0x2 << 0)
-#define CLKSEL_24M			(0x3 << 0)
+
+#define EXYNOS4_CLKSEL_SHIFT		(0)
+
+#define EXYNOS4210_CLKSEL_MASK		(0x3 << 0)
+#define EXYNOS4210_CLKSEL_48M		(0x0 << 0)
+#define EXYNOS4210_CLKSEL_12M		(0x2 << 0)
+#define EXYNOS4210_CLKSEL_24M		(0x3 << 0)
+
+#define EXYNOS4X12_CLKSEL_MASK		(0x7 << 0)
+#define EXYNOS4X12_CLKSEL_9600K		(0x0 << 0)
+#define EXYNOS4X12_CLKSEL_10M		(0x1 << 0)
+#define EXYNOS4X12_CLKSEL_12M		(0x2 << 0)
+#define EXYNOS4X12_CLKSEL_19200K	(0x3 << 0)
+#define EXYNOS4X12_CLKSEL_20M		(0x4 << 0)
+#define EXYNOS4X12_CLKSEL_24M		(0x5 << 0)
 
 #define EXYNOS4_RSTCON			EXYNOS4_HSOTG_PHYREG(0x08)
 #define HOST_LINK_PORT_SWRST_MASK	(0xf << 6)
diff --git a/arch/arm/mach-exynos/pmu.c b/arch/arm/mach-exynos/pmu.c
index 4aacb66f716..3a48c852be6 100644
--- a/arch/arm/mach-exynos/pmu.c
+++ b/arch/arm/mach-exynos/pmu.c
@@ -315,7 +315,7 @@ static struct exynos_pmu_conf exynos5250_pmu_config[] = {
 	{ PMU_TABLE_END,},
 };
 
-void __iomem *exynos5_list_both_cnt_feed[] = {
+static void __iomem *exynos5_list_both_cnt_feed[] = {
 	EXYNOS5_ARM_CORE0_OPTION,
 	EXYNOS5_ARM_CORE1_OPTION,
 	EXYNOS5_ARM_COMMON_OPTION,
@@ -329,7 +329,7 @@ void __iomem *exynos5_list_both_cnt_feed[] = {
 	EXYNOS5_TOP_PWR_SYSMEM_OPTION,
 };
 
-void __iomem *exynos5_list_diable_wfi_wfe[] = {
+static void __iomem *exynos5_list_diable_wfi_wfe[] = {
 	EXYNOS5_ARM_CORE1_OPTION,
 	EXYNOS5_FSYS_ARM_OPTION,
 	EXYNOS5_ISP_ARM_OPTION,
@@ -390,6 +390,8 @@ void exynos_sys_powerdown_conf(enum sys_powerdown mode)
 
 static int __init exynos_pmu_init(void)
 {
+	unsigned int value;
+
 	exynos_pmu_config = exynos4210_pmu_config;
 
 	if (soc_is_exynos4210()) {
@@ -399,6 +401,18 @@ static int __init exynos_pmu_init(void)
 		exynos_pmu_config = exynos4x12_pmu_config;
 		pr_info("EXYNOS4x12 PMU Initialize\n");
 	} else if (soc_is_exynos5250()) {
+		/*
+		 * When SYS_WDTRESET is set, watchdog timer reset request
+		 * is ignored by power management unit.
+		 */
+		value = __raw_readl(EXYNOS5_AUTO_WDTRESET_DISABLE);
+		value &= ~EXYNOS5_SYS_WDTRESET;
+		__raw_writel(value, EXYNOS5_AUTO_WDTRESET_DISABLE);
+
+		value = __raw_readl(EXYNOS5_MASK_WDTRESET_REQUEST);
+		value &= ~EXYNOS5_SYS_WDTRESET;
+		__raw_writel(value, EXYNOS5_MASK_WDTRESET_REQUEST);
+
 		exynos_pmu_config = exynos5250_pmu_config;
 		pr_info("EXYNOS5250 PMU Initialize\n");
 	} else {
diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c
index 1af0a7f44e0..b81cc569a8d 100644
--- a/arch/arm/mach-exynos/setup-usb-phy.c
+++ b/arch/arm/mach-exynos/setup-usb-phy.c
@@ -31,27 +31,55 @@ static void exynos4210_usb_phy_clkset(struct platform_device *pdev)
 	struct clk *xusbxti_clk;
 	u32 phyclk;
 
-	/* set clock frequency for PLL */
-	phyclk = readl(EXYNOS4_PHYCLK) & ~CLKSEL_MASK;
-
 	xusbxti_clk = clk_get(&pdev->dev, "xusbxti");
 	if (xusbxti_clk && !IS_ERR(xusbxti_clk)) {
-		switch (clk_get_rate(xusbxti_clk)) {
-		case 12 * MHZ:
-			phyclk |= CLKSEL_12M;
-			break;
-		case 24 * MHZ:
-			phyclk |= CLKSEL_24M;
-			break;
-		default:
-		case 48 * MHZ:
-			/* default reference clock */
-			break;
+		if (soc_is_exynos4210()) {
+			/* set clock frequency for PLL */
+			phyclk = readl(EXYNOS4_PHYCLK) & ~EXYNOS4210_CLKSEL_MASK;
+
+			switch (clk_get_rate(xusbxti_clk)) {
+			case 12 * MHZ:
+				phyclk |= EXYNOS4210_CLKSEL_12M;
+				break;
+			case 48 * MHZ:
+				phyclk |= EXYNOS4210_CLKSEL_48M;
+				break;
+			default:
+			case 24 * MHZ:
+				phyclk |= EXYNOS4210_CLKSEL_24M;
+				break;
+			}
+			writel(phyclk, EXYNOS4_PHYCLK);
+		} else if (soc_is_exynos4212() || soc_is_exynos4412()) {
+			/* set clock frequency for PLL */
+			phyclk = readl(EXYNOS4_PHYCLK) & ~EXYNOS4X12_CLKSEL_MASK;
+
+			switch (clk_get_rate(xusbxti_clk)) {
+			case 9600 * KHZ:
+				phyclk |= EXYNOS4X12_CLKSEL_9600K;
+				break;
+			case 10 * MHZ:
+				phyclk |= EXYNOS4X12_CLKSEL_10M;
+				break;
+			case 12 * MHZ:
+				phyclk |= EXYNOS4X12_CLKSEL_12M;
+				break;
+			case 19200 * KHZ:
+				phyclk |= EXYNOS4X12_CLKSEL_19200K;
+				break;
+			case 20 * MHZ:
+				phyclk |= EXYNOS4X12_CLKSEL_20M;
+				break;
+			default:
+			case 24 * MHZ:
+				/* default reference clock */
+				phyclk |= EXYNOS4X12_CLKSEL_24M;
+				break;
+			}
+			writel(phyclk, EXYNOS4_PHYCLK);
 		}
 		clk_put(xusbxti_clk);
 	}
-
-	writel(phyclk, EXYNOS4_PHYCLK);
 }
 
 static int exynos4210_usb_phy0_init(struct platform_device *pdev)
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index a2fae4ea093..9b4cfd412b1 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -78,6 +78,10 @@ config S5P_HRT
 
 # clock options
 
+config SAMSUNG_CLOCK
+	bool
+	default y if !COMMON_CLK
+
 config SAMSUNG_CLKSRC
 	bool
 	help
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
index 860b2db4db1..abf2f3b6698 100644
--- a/arch/arm/plat-samsung/Makefile
+++ b/arch/arm/plat-samsung/Makefile
@@ -15,8 +15,8 @@ obj-y				+= init.o cpu.o
 obj-$(CONFIG_ARCH_USES_GETTIMEOFFSET)   += time.o
 obj-$(CONFIG_S5P_HRT) 		+= s5p-time.o
 
-obj-y				+= clock.o
-obj-y				+= pwm-clock.o
+obj-$(CONFIG_SAMSUNG_CLOCK)	+= clock.o
+obj-$(CONFIG_SAMSUNG_CLOCK)	+= pwm-clock.o
 
 obj-$(CONFIG_SAMSUNG_CLKSRC)	+= clock-clksrc.o
 obj-$(CONFIG_S5P_CLOCK)		+= s5p-clock.o
diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h
index 0721293fad6..ace4451b765 100644
--- a/arch/arm/plat-samsung/include/plat/cpu.h
+++ b/arch/arm/plat-samsung/include/plat/cpu.h
@@ -132,6 +132,10 @@ IS_SAMSUNG_CPU(exynos5250, EXYNOS5250_SOC_ID, EXYNOS5_SOC_MASK)
 
 #define IODESC_ENT(x) { (unsigned long)S3C24XX_VA_##x, __phys_to_pfn(S3C24XX_PA_##x), S3C24XX_SZ_##x, MT_DEVICE }
 
+#ifndef KHZ
+#define KHZ (1000)
+#endif
+
 #ifndef MHZ
 #define MHZ (1000*1000)
 #endif