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| author | Jongpill Lee <boyko.lee@samsung.com> | 2012-02-17 04:23:51 +0100 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2012-05-19 20:14:36 +0200 |
| commit | 60e49ca654eea42e04912b259fa36bad2c3e56ef (patch) | |
| tree | 733d7c478de6df42761a2938b6129d6242bb84fd /arch/arm/mach-exynos/pmu.c | |
| parent | ARM: EXYNOS: Add Clock register list for save and restore (diff) | |
| download | linux-60e49ca654eea42e04912b259fa36bad2c3e56ef.tar.xz linux-60e49ca654eea42e04912b259fa36bad2c3e56ef.zip | |
ARM: EXYNOS: Support suspend and resume for EXYNOS5250
This patch adds function for suspend and resume of Exynos5250.
Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
[kgene.kim@samsung.com: re-worked on top of v3.4-rc7]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos/pmu.c')
| -rw-r--r-- | arch/arm/mach-exynos/pmu.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/pmu.c b/arch/arm/mach-exynos/pmu.c index db4dc515e416..4aacb66f7161 100644 --- a/arch/arm/mach-exynos/pmu.c +++ b/arch/arm/mach-exynos/pmu.c @@ -11,6 +11,7 @@ #include <linux/io.h> #include <linux/kernel.h> +#include <linux/bug.h> #include <mach/regs-clock.h> #include <mach/pmu.h> @@ -314,10 +315,68 @@ static struct exynos_pmu_conf exynos5250_pmu_config[] = { { PMU_TABLE_END,}, }; +void __iomem *exynos5_list_both_cnt_feed[] = { + EXYNOS5_ARM_CORE0_OPTION, + EXYNOS5_ARM_CORE1_OPTION, + EXYNOS5_ARM_COMMON_OPTION, + EXYNOS5_GSCL_OPTION, + EXYNOS5_ISP_OPTION, + EXYNOS5_MFC_OPTION, + EXYNOS5_G3D_OPTION, + EXYNOS5_DISP1_OPTION, + EXYNOS5_MAU_OPTION, + EXYNOS5_TOP_PWR_OPTION, + EXYNOS5_TOP_PWR_SYSMEM_OPTION, +}; + +void __iomem *exynos5_list_diable_wfi_wfe[] = { + EXYNOS5_ARM_CORE1_OPTION, + EXYNOS5_FSYS_ARM_OPTION, + EXYNOS5_ISP_ARM_OPTION, +}; + +static void exynos5_init_pmu(void) +{ + unsigned int i; + unsigned int tmp; + + /* + * Enable both SC_FEEDBACK and SC_COUNTER + */ + for (i = 0 ; i < ARRAY_SIZE(exynos5_list_both_cnt_feed) ; i++) { + tmp = __raw_readl(exynos5_list_both_cnt_feed[i]); + tmp |= (EXYNOS5_USE_SC_FEEDBACK | + EXYNOS5_USE_SC_COUNTER); + __raw_writel(tmp, exynos5_list_both_cnt_feed[i]); + } + + /* + * SKIP_DEACTIVATE_ACEACP_IN_PWDN_BITFIELD Enable + * MANUAL_L2RSTDISABLE_CONTROL_BITFIELD Enable + */ + tmp = __raw_readl(EXYNOS5_ARM_COMMON_OPTION); + tmp |= (EXYNOS5_MANUAL_L2RSTDISABLE_CONTROL | + EXYNOS5_SKIP_DEACTIVATE_ACEACP_IN_PWDN); + __raw_writel(tmp, EXYNOS5_ARM_COMMON_OPTION); + + /* + * Disable WFI/WFE on XXX_OPTION + */ + for (i = 0 ; i < ARRAY_SIZE(exynos5_list_diable_wfi_wfe) ; i++) { + tmp = __raw_readl(exynos5_list_diable_wfi_wfe[i]); + tmp &= ~(EXYNOS5_OPTION_USE_STANDBYWFE | + EXYNOS5_OPTION_USE_STANDBYWFI); + __raw_writel(tmp, exynos5_list_diable_wfi_wfe[i]); + } +} + void exynos_sys_powerdown_conf(enum sys_powerdown mode) { unsigned int i; + if (soc_is_exynos5250()) + exynos5_init_pmu(); + for (i = 0; (exynos_pmu_config[i].reg != PMU_TABLE_END) ; i++) __raw_writel(exynos_pmu_config[i].val[mode], exynos_pmu_config[i].reg); |