From: Jongpill Lee <boyko.lee@xxxxxxxxxxx>
This patch adds function for suspend and resume of Exynos5250.
Signed-off-by: Jongpill Lee <boyko.lee@xxxxxxxxxxx>
Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
---
arch/arm/mach-exynos/include/mach/pm-core.h | 2 +-
arch/arm/mach-exynos/pm.c | 123 ++++++++++++++++-----------
arch/arm/mach-exynos/pmu.c | 59 +++++++++++++
arch/arm/plat-samsung/include/plat/cpu.h | 1 +
4 files changed, 135 insertions(+), 50 deletions(-)
diff --git a/arch/arm/mach-exynos/include/mach/pm-core.h b/arch/arm/mach-exynos/include/mach/pm-core.h
index 9d8da51e3..a67ecfa 100644
--- a/arch/arm/mach-exynos/include/mach/pm-core.h
+++ b/arch/arm/mach-exynos/include/mach/pm-core.h
@@ -33,7 +33,7 @@ static inline void s3c_pm_arch_prepare_irqs(void)
__raw_writel(tmp, S5P_WAKEUP_MASK);
__raw_writel(s3c_irqwake_intmask, S5P_WAKEUP_MASK);
- __raw_writel(s3c_irqwake_eintmask, S5P_EINT_WAKEUP_MASK);
+ __raw_writel(s3c_irqwake_eintmask & 0xFFFFFFFE, S5P_EINT_WAKEUP_MASK);
}
static inline void s3c_pm_arch_stop_clocks(void)
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index abc1def..94faa3e 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -84,7 +84,14 @@ static unsigned int save_arm_register[2];
static int exynos_cpu_suspend(unsigned long arg)
{
+#ifdef CONFIG_CACHE_L2X0
outer_flush_all();
+#endif
+ /*
+ * To enter suspend mode, GPS LPI register must be set.
+ */
+ if (soc_is_exynos5250())
+ __raw_writel(0x10000, EXYNOS5_GPS_LPI);
/* issue the standby signal into the pm unit. */
cpu_do_idle();
@@ -95,27 +102,35 @@ static int exynos_cpu_suspend(unsigned long arg)
static void exynos_pm_prepare(void)
{
- u32 tmp;
+ unsigned int tmp;
s3c_pm_do_save(exynos_core_save, ARRAY_SIZE(exynos_core_save));
- s3c_pm_do_save(exynos4_l2cc_save, ARRAY_SIZE(exynos4_l2cc_save));
- s3c_pm_do_save(exynos4_epll_save, ARRAY_SIZE(exynos4_epll_save));
- s3c_pm_do_save(exynos4_vpll_save, ARRAY_SIZE(exynos4_vpll_save));
- tmp = __raw_readl(S5P_INFORM1);
+ if (!soc_is_exynos5250()) {
+ s3c_pm_do_save(exynos4_l2cc_save, ARRAY_SIZE(exynos4_l2cc_save));
+ s3c_pm_do_save(exynos4_epll_save, ARRAY_SIZE(exynos4_epll_save));
+ s3c_pm_do_save(exynos4_vpll_save, ARRAY_SIZE(exynos4_vpll_save));
+ } else {
+ /* Disable USE_RETENTION of JPEG_MEM_OPTION */
+ tmp = __raw_readl(EXYNOS5_JPEG_MEM_OPTION);
+ tmp &= ~EXYNOS5_OPTION_USE_RETENTION;
+ __raw_writel(tmp, EXYNOS5_JPEG_MEM_OPTION);
+ }
/* Set value of power down register for sleep mode */
-
exynos4_sys_powerdown_conf(SYS_SLEEP);
__raw_writel(S5P_CHECK_SLEEP, S5P_INFORM1);
/* ensure at least INFORM0 has the resume address */
-
__raw_writel(virt_to_phys(s3c_cpu_resume), S5P_INFORM0);
- /* Before enter central sequence mode, clock src register have to set */
-
- s3c_pm_do_restore_core(exynos4_set_clksrc, ARRAY_SIZE(exynos4_set_clksrc));
+ /*
+ * Before enter central sequence mode,
+ * clock src register have to set.
+ */
+ if (!soc_is_exynos5250())
+ s3c_pm_do_restore_core(exynos4_set_clksrc,
+ ARRAY_SIZE(exynos4_set_clksrc));
if (soc_is_exynos4210())
s3c_pm_do_restore_core(exynos4210_set_clksrc, ARRAY_SIZE(exynos4210_set_clksrc));
@@ -197,12 +212,18 @@ static void exynos4_restore_pll(void)
} while (epll_wait || vpll_wait);
}
-static struct subsys_interface exynos_pm_interface = {
- .name = "exynos4_pm",
+static struct subsys_interface exynos4_pm_interface = {
+ .name = "exynos_pm",
.subsys = &exynos4_subsys,
.add_dev = exynos_pm_add,
};
+static struct subsys_interface exynos5_pm_interface = {
+ .name = "exynos_pm",
+ .subsys = &exynos5_subsys,
+ .add_dev = exynos_pm_add,
+};
+
static __init int exynos_pm_drvinit(void)
{
struct clk *pll_base;
@@ -224,8 +245,10 @@ static __init int exynos_pm_drvinit(void)
clk_put(pll_base);
}
}
-
- return subsys_interface_register(&exynos_pm_interface);
+ if (soc_is_exynos5250())
+ return subsys_interface_register(&exynos5_pm_interface);
+ else
+ return subsys_interface_register(&exynos4_pm_interface);
}
arch_initcall(exynos_pm_drvinit);
@@ -234,27 +257,25 @@ static int exynos_pm_suspend(void)
unsigned long tmp;
/* Setting Central Sequence Register for power down mode */
-
tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
tmp &= ~S5P_CENTRAL_LOWPWR_CFG;
__raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
- if (soc_is_exynos4212()) {
- tmp = __raw_readl(S5P_CENTRAL_SEQ_OPTION);
- tmp &= ~(S5P_USE_STANDBYWFI_ISP_ARM |
- S5P_USE_STANDBYWFE_ISP_ARM);
- __raw_writel(tmp, S5P_CENTRAL_SEQ_OPTION);
- }
-
- /* Save Power control register */
- asm ("mrc p15, 0, %0, c15, c0, 0"
- : "=r" (tmp) : : "cc");
- save_arm_register[0] = tmp;
+ /* Setting SEQ_OPTION register */
+ tmp = (S5P_USE_STANDBY_WFI0 | S5P_USE_STANDBY_WFE0);
+ __raw_writel(tmp, S5P_CENTRAL_SEQ_OPTION);
- /* Save Diagnostic register */
- asm ("mrc p15, 0, %0, c15, c0, 1"
- : "=r" (tmp) : : "cc");
- save_arm_register[1] = tmp;
+ if (!soc_is_exynos5250()) {
+ /* Save Power control register */
+ asm ("mrc p15, 0, %0, c15, c0, 0"
+ : "=r" (tmp) : : "cc");
+ save_arm_register[0] = tmp;
+
+ /* Save Diagnostic register */
+ asm ("mrc p15, 0, %0, c15, c0, 1"
+ : "=r" (tmp) : : "cc");
+ save_arm_register[1] = tmp;
+ }
return 0;
}
@@ -276,17 +297,19 @@ static void exynos_pm_resume(void)
/* No need to perform below restore code */
goto early_wakeup;
}
- /* Restore Power control register */
- tmp = save_arm_register[0];
- asm volatile ("mcr p15, 0, %0, c15, c0, 0"
- : : "r" (tmp)
- : "cc");
-
- /* Restore Diagnostic register */
- tmp = save_arm_register[1];
- asm volatile ("mcr p15, 0, %0, c15, c0, 1"
- : : "r" (tmp)
- : "cc");
+ if (!soc_is_exynos5250()) {
+ /* Restore Power control register */
+ tmp = save_arm_register[0];
+ asm volatile ("mcr p15, 0, %0, c15, c0, 0"
+ : : "r" (tmp)
+ : "cc");
+
+ /* Restore Diagnostic register */
+ tmp = save_arm_register[1];
+ asm volatile ("mcr p15, 0, %0, c15, c0, 1"
+ : : "r" (tmp)
+ : "cc");
+ }
/* For release retention */
@@ -300,18 +323,20 @@ static void exynos_pm_resume(void)
s3c_pm_do_restore_core(exynos_core_save, ARRAY_SIZE(exynos_core_save));
- exynos4_restore_pll();
+ if (!soc_is_exynos5250()) {
+ exynos4_restore_pll();
#ifdef CONFIG_SMP
- scu_enable(S5P_VA_SCU);
+ scu_enable(S5P_VA_SCU);
#endif
#ifdef CONFIG_CACHE_L2X0
- s3c_pm_do_restore_core(exynos4_l2cc_save, ARRAY_SIZE(exynos4_l2cc_save));
- outer_inv_all();
- /* enable L2X0*/
- writel_relaxed(1, S5P_VA_L2CC + L2X0_CTRL);
+ s3c_pm_do_restore_core(exynos4_l2cc_save, ARRAY_SIZE(exynos4_l2cc_save));
+ outer_inv_all();
+ /* enable L2X0*/
+ writel_relaxed(1, S5P_VA_L2CC + L2X0_CTRL);
#endif
+ }
early_wakeup:
return;
@@ -322,9 +347,9 @@ static struct syscore_ops exynos_pm_syscore_ops = {
.resume = exynos_pm_resume,
};
-static __init int exynos4_pm_syscore_init(void)
+static __init int exynos_pm_syscore_init(void)
{
register_syscore_ops(&exynos_pm_syscore_ops);
return 0;
}
-arch_initcall(exynos4_pm_syscore_init);
+arch_initcall(exynos_pm_syscore_init);
diff --git a/arch/arm/mach-exynos/pmu.c b/arch/arm/mach-exynos/pmu.c
index 5c7eb15..51aa1ec 100644
--- a/arch/arm/mach-exynos/pmu.c
+++ b/arch/arm/mach-exynos/pmu.c
@@ -309,10 +309,69 @@ static struct exynos4_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_GPS_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 exynos4_sys_powerdown_conf(enum sys_powerdown mode)
{
unsigned int i;
+ if (soc_is_exynos5250())
+ exynos5_init_pmu();
+
for (i = 0; (exynos4_pmu_config[i].reg != PMU_TABLE_END) ; i++)
__raw_writel(exynos4_pmu_config[i].val[mode],
exynos4_pmu_config[i].reg);
diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h
index 787ceac..747c27d 100644
--- a/arch/arm/plat-samsung/include/plat/cpu.h
+++ b/arch/arm/plat-samsung/include/plat/cpu.h
@@ -203,6 +203,7 @@ extern struct bus_type s3c6410_subsys;
extern struct bus_type s5p64x0_subsys;
extern struct bus_type s5pv210_subsys;
extern struct bus_type exynos4_subsys;
+extern struct bus_type exynos5_subsys;
extern void (*s5pc1xx_idle)(void);
--
1.7.4.4
--
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