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ARM: EXYNOS: use generic exynos cpu power control functions
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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>
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Leela Krishna Amudala authored and Kukjin Kim committed May 15, 2014
1 parent d3af697 commit 664ba44
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Showing 3 changed files with 4 additions and 10 deletions.
2 changes: 1 addition & 1 deletion arch/arm/mach-exynos/hotplug.c
Original file line number Diff line number Diff line change
Expand Up @@ -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
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9 changes: 3 additions & 6 deletions arch/arm/mach-exynos/platsmp.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;

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3 changes: 0 additions & 3 deletions arch/arm/mach-exynos/regs-pmu.h
Original file line number Diff line number Diff line change
Expand Up @@ -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)
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