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authorAbhilash Kesavan <a.kesavan@samsung.com>2014-05-16 04:23:26 +0900
committerKukjin Kim <kgene.kim@samsung.com>2014-05-16 04:24:51 +0900
commit096d21c6ebd01b3440d1e6063e646d9db8e31ac9 (patch)
tree0e20c38cfe275540bea9996f514c1120d9e47940
parent664ba4430156c224b184692ab1a038a467c7826c (diff)
ARM: EXYNOS: Add generic cluster power control functions
Add generic cluster power control functions for exynos based SoCS for cluster power up/down and to know the cluster status. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
-rw-r--r--arch/arm/mach-exynos/common.h3
-rw-r--r--arch/arm/mach-exynos/pm.c30
-rw-r--r--arch/arm/mach-exynos/regs-pmu.h6
3 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index 4d815a511bc1..7876ed04b7a5 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -66,5 +66,8 @@ extern void exynos_sys_powerdown_conf(enum sys_powerdown mode);
extern void exynos_cpu_power_down(int cpu);
extern void exynos_cpu_power_up(int cpu);
extern int exynos_cpu_power_state(int cpu);
+extern void exynos_cluster_power_down(int cluster);
+extern void exynos_cluster_power_up(int cluster);
+extern int exynos_cluster_power_state(int cluster);
#endif /* __ARCH_ARM_MACH_EXYNOS_COMMON_H */
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index cbfe23598236..3f2ae864582e 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -136,6 +136,36 @@ int exynos_cpu_power_state(int cpu)
S5P_CORE_LOCAL_PWR_EN);
}
+/**
+ * exynos_cluster_power_down : power down the specified cluster
+ * @cluster : the cluster to power down
+ */
+void exynos_cluster_power_down(int cluster)
+{
+ __raw_writel(0, EXYNOS_COMMON_CONFIGURATION(cluster));
+}
+
+/**
+ * exynos_cluster_power_up : power up the specified cluster
+ * @cluster : the cluster to power up
+ */
+void exynos_cluster_power_up(int cluster)
+{
+ __raw_writel(S5P_CORE_LOCAL_PWR_EN,
+ EXYNOS_COMMON_CONFIGURATION(cluster));
+}
+
+/**
+ * exynos_cluster_power_state : returns the power state of the cluster
+ * @cluster : the cluster to retrieve the power state from
+ *
+ */
+int exynos_cluster_power_state(int cluster)
+{
+ return (__raw_readl(EXYNOS_COMMON_STATUS(cluster)) &
+ S5P_CORE_LOCAL_PWR_EN);
+}
+
/* For Cortex-A9 Diagnostic and Power control register */
static unsigned int save_arm_register[2];
diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h
index 98fb8d8715e6..f6b68a327586 100644
--- a/arch/arm/mach-exynos/regs-pmu.h
+++ b/arch/arm/mach-exynos/regs-pmu.h
@@ -111,6 +111,12 @@
#define EXYNOS_ARM_CORE_STATUS(_nr) \
(EXYNOS_ARM_CORE_CONFIGURATION(_nr) + 0x4)
+#define EXYNOS_ARM_COMMON_CONFIGURATION S5P_PMUREG(0x2500)
+#define EXYNOS_COMMON_CONFIGURATION(_nr) \
+ (EXYNOS_ARM_COMMON_CONFIGURATION + (0x80 * (_nr)))
+#define EXYNOS_COMMON_STATUS(_nr) \
+ (EXYNOS_COMMON_CONFIGURATION(_nr) + 0x4)
+
#define S5P_PAD_RET_MAUDIO_OPTION S5P_PMUREG(0x3028)
#define S5P_PAD_RET_GPIO_OPTION S5P_PMUREG(0x3108)
#define S5P_PAD_RET_UART_OPTION S5P_PMUREG(0x3128)