From: Ajay Kumar <ajaykumar.rs@xxxxxxxxxxx>
Added exynos5420_sys_save[] structure for system registers on Exynos5420.
We save the values of all the system registers present in the list
exynos5420_sys_save[], and we restore these values on resume.
As of now, we have added save/restore entry for EXYNOS5_SYS_DISP1_BLK_CFG.
NOTE: Restoring of EXYNOS5_SYS_DISP1_BLK_CFG was not done on Exynos5250
because we use MIE path on Exynos5250 and the default reset value of
EXYNOS5_SYS_DISP1_BLK_CFG is set to use MIE.
Signed-off-by: Ajay Kumar <ajaykumar.rs@xxxxxxxxxxx>
Tested-by: Prathyush Kalashwaram <prathyush@xxxxxxxxxxxx>
Signed-off-by: Sachin Kamat <sachin.kamat@xxxxxxxxxx>
---
arch/arm/mach-exynos/include/mach/regs-pmu.h | 1 +
arch/arm/mach-exynos/pm.c | 10 ++++++++++
2 files changed, 11 insertions(+)
diff --git a/arch/arm/mach-exynos/include/mach/regs-pmu.h b/arch/arm/mach-exynos/include/mach/regs-pmu.h
index 2cdb63e8ce5c..c58b43a19020 100644
--- a/arch/arm/mach-exynos/include/mach/regs-pmu.h
+++ b/arch/arm/mach-exynos/include/mach/regs-pmu.h
@@ -227,6 +227,7 @@
/* For EXYNOS5 */
+#define EXYNOS5_SYS_DISP1_BLK_CFG S5P_SYSREG(0x0214)
#define EXYNOS5_SYS_I2C_CFG S5P_SYSREG(0x0234)
#define EXYNOS5_AUTO_WDTRESET_DISABLE S5P_PMUREG(0x0408)
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index 1578d435df43..a1b7b79b70fa 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -39,6 +39,10 @@ static struct sleep_save exynos5_sys_save[] = {
SAVE_ITEM(EXYNOS5_SYS_I2C_CFG),
};
+static struct sleep_save exynos5420_sys_save[] = {
+ SAVE_ITEM(EXYNOS5_SYS_DISP1_BLK_CFG),
+};
+
static struct sleep_save exynos_core_save[] = {
/* SROM side */
SAVE_ITEM(S5P_SROM_BW),
@@ -80,6 +84,9 @@ static void exynos_pm_prepare(void)
tmp = __raw_readl(EXYNOS5_JPEG_MEM_OPTION);
tmp &= ~EXYNOS5_OPTION_USE_RETENTION;
__raw_writel(tmp, EXYNOS5_JPEG_MEM_OPTION);
+ } else if (soc_is_exynos5420()) {
+ s3c_pm_do_save(exynos5420_sys_save,
+ ARRAY_SIZE(exynos5420_sys_save));
}
/* Set value of power down register for sleep mode */
@@ -256,6 +263,9 @@ static void exynos_pm_resume(void)
if (soc_is_exynos5250())
s3c_pm_do_restore(exynos5_sys_save,
ARRAY_SIZE(exynos5_sys_save));
+ else if (soc_is_exynos5420())
+ s3c_pm_do_restore(exynos5420_sys_save,
+ ARRAY_SIZE(exynos5420_sys_save));
s3c_pm_do_restore_core(exynos_core_save, ARRAY_SIZE(exynos_core_save));
--
1.7.9.5
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