diff options
| author | Abhilash Kesavan <a.kesavan@samsung.com> | 2014-05-15 23:23:26 +0400 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2014-05-15 23:24:51 +0400 |
| commit | 096d21c6ebd01b3440d1e6063e646d9db8e31ac9 (patch) | |
| tree | 0e20c38cfe275540bea9996f514c1120d9e47940 /arch | |
| parent | 664ba4430156c224b184692ab1a038a467c7826c (diff) | |
| download | linux-096d21c6ebd01b3440d1e6063e646d9db8e31ac9.tar.xz | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-exynos/common.h | 3 | ||||
| -rw-r--r-- | arch/arm/mach-exynos/pm.c | 30 | ||||
| -rw-r--r-- | arch/arm/mach-exynos/regs-pmu.h | 6 |
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) |