OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ARM: EXYNOS: use generic exynos cpu power control functions 

Use generic exynos cpu power control functions to power up/down
and to know the status of the cpu in platsmp and hotplug code.

Signed-off-by: Leela Krishna Amudala <leela.krishna@linaro.org>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Leela Krishna Amudala 2014-05-16 04:23:25 +09:00 committed by Kukjin Kim
parent d3af6976a2
commit 664ba44301
3 changed files with 4 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-exynos/hotplug.c
View File

@ -96,7 +96,7 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
/* make cpu1 to be turned off at next WFI command */
if (cpu == 1)
__raw_writel(0, S5P_ARM_CORE1_CONFIGURATION);
exynos_cpu_power_down(cpu);
/*
* here's the WFI

9
arch/arm/mach-exynos/platsmp.c
View File

@ -133,15 +133,12 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle)
*/
write_pen_release(phys_cpu);
if (!(__raw_readl(S5P_ARM_CORE1_STATUS) & S5P_CORE_LOCAL_PWR_EN)) {
__raw_writel(S5P_CORE_LOCAL_PWR_EN,
S5P_ARM_CORE1_CONFIGURATION);
if (!exynos_cpu_power_state(cpu)) {
exynos_cpu_power_up(cpu);
timeout = 10;
/* wait max 10 ms until cpu1 is on */
while ((__raw_readl(S5P_ARM_CORE1_STATUS)
& S5P_CORE_LOCAL_PWR_EN) != S5P_CORE_LOCAL_PWR_EN) {
while (exynos_cpu_power_state(cpu) != S5P_CORE_LOCAL_PWR_EN) {
if (timeout-- == 0)
break;

3
arch/arm/mach-exynos/regs-pmu.h
View File

@ -111,9 +111,6 @@
#define EXYNOS_ARM_CORE_STATUS(_nr) \
(EXYNOS_ARM_CORE_CONFIGURATION(_nr) + 0x4)
#define S5P_ARM_CORE1_CONFIGURATION S5P_PMUREG(0x2080)
#define S5P_ARM_CORE1_STATUS S5P_PMUREG(0x2084)
#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)