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Commit 096d21c6 authored by Abhilash Kesavan's avatar Abhilash Kesavan Committed by Kukjin Kim
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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: default avatarAbhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 664ba443

arch/arm/mach-exynos/common.h

+3 −0
Original line number Diff line number Diff line
@@ -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 */

arch/arm/mach-exynos/pm.c

+30 −0
Original line number Diff line number Diff line
@@ -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];

arch/arm/mach-exynos/regs-pmu.h

+6 −0
Original line number Diff line number Diff line
@@ -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)