1 files changed, 174 insertions, 2 deletions

diff --git a/arch/arm/mach-s3c64xx/pm.c b/arch/arm/mach-s3c64xx/pm.c
index b375cd5c47cb..7d3e81b9dd06 100644
--- a/arch/arm/mach-s3c64xx/pm.c
+++ b/arch/arm/mach-s3c64xx/pm.c
@@ -17,10 +17,12 @@
 #include <linux/serial_core.h>
 #include <linux/io.h>
 #include <linux/gpio.h>
+#include <linux/pm_domain.h>
 
 #include <mach/map.h>
 #include <mach/irqs.h>
 
+#include <plat/devs.h>
 #include <plat/pm.h>
 #include <plat/wakeup-mask.h>
 
@@ -31,6 +33,148 @@
 #include <mach/regs-gpio-memport.h>
 #include <mach/regs-modem.h>
 
+struct s3c64xx_pm_domain {
+        char *const name;
+        u32 ena;
+        u32 pwr_stat;
+        struct generic_pm_domain pd;
+};
+
+static int s3c64xx_pd_off(struct generic_pm_domain *domain)
+{
+        struct s3c64xx_pm_domain *pd;
+        u32 val;
+
+        pd = container_of(domain, struct s3c64xx_pm_domain, pd);
+
+        val = __raw_readl(S3C64XX_NORMAL_CFG);
+        val &= ~(pd->ena);
+        __raw_writel(val, S3C64XX_NORMAL_CFG);
+
+        return 0;
+}
+
+static int s3c64xx_pd_on(struct generic_pm_domain *domain)
+{
+        struct s3c64xx_pm_domain *pd;
+        u32 val;
+        long retry = 1000000L;
+
+        pd = container_of(domain, struct s3c64xx_pm_domain, pd);
+
+        val = __raw_readl(S3C64XX_NORMAL_CFG);
+        val |= pd->ena;
+        __raw_writel(val, S3C64XX_NORMAL_CFG);
+
+        /* Not all domains provide power status readback */
+        if (pd->pwr_stat) {
+                do {
+                        cpu_relax();
+                        if (__raw_readl(S3C64XX_BLK_PWR_STAT) & pd->pwr_stat)
+                                break;
+                } while (retry--);
+
+                if (!retry) {
+                        pr_err("Failed to start domain %s\n", pd->name);
+                        return -EBUSY;
+                }
+        }
+
+        return 0;
+}
+
+static struct s3c64xx_pm_domain s3c64xx_pm_irom = {
+        .name = "IROM",
+        .ena = S3C64XX_NORMALCFG_IROM_ON,
+        .pd = {
+                .power_off = s3c64xx_pd_off,
+                .power_on = s3c64xx_pd_on,
+        },
+};
+
+static struct s3c64xx_pm_domain s3c64xx_pm_etm = {
+        .name = "ETM",
+        .ena = S3C64XX_NORMALCFG_DOMAIN_ETM_ON,
+        .pwr_stat = S3C64XX_BLKPWRSTAT_ETM,
+        .pd = {
+                .power_off = s3c64xx_pd_off,
+                .power_on = s3c64xx_pd_on,
+        },
+};
+
+static struct s3c64xx_pm_domain s3c64xx_pm_s = {
+        .name = "S",
+        .ena = S3C64XX_NORMALCFG_DOMAIN_S_ON,
+        .pwr_stat = S3C64XX_BLKPWRSTAT_S,
+        .pd = {
+                .power_off = s3c64xx_pd_off,
+                .power_on = s3c64xx_pd_on,
+        },
+};
+
+static struct s3c64xx_pm_domain s3c64xx_pm_f = {
+        .name = "F",
+        .ena = S3C64XX_NORMALCFG_DOMAIN_F_ON,
+        .pwr_stat = S3C64XX_BLKPWRSTAT_F,
+        .pd = {
+                .power_off = s3c64xx_pd_off,
+                .power_on = s3c64xx_pd_on,
+        },
+};
+
+static struct s3c64xx_pm_domain s3c64xx_pm_p = {
+        .name = "P",
+        .ena = S3C64XX_NORMALCFG_DOMAIN_P_ON,
+        .pwr_stat = S3C64XX_BLKPWRSTAT_P,
+        .pd = {
+                .power_off = s3c64xx_pd_off,
+                .power_on = s3c64xx_pd_on,
+        },
+};
+
+static struct s3c64xx_pm_domain s3c64xx_pm_i = {
+        .name = "I",
+        .ena = S3C64XX_NORMALCFG_DOMAIN_I_ON,
+        .pwr_stat = S3C64XX_BLKPWRSTAT_I,
+        .pd = {
+                .power_off = s3c64xx_pd_off,
+                .power_on = s3c64xx_pd_on,
+        },
+};
+
+static struct s3c64xx_pm_domain s3c64xx_pm_g = {
+        .name = "G",
+        .ena = S3C64XX_NORMALCFG_DOMAIN_G_ON,
+        .pd = {
+                .power_off = s3c64xx_pd_off,
+                .power_on = s3c64xx_pd_on,
+        },
+};
+
+static struct s3c64xx_pm_domain s3c64xx_pm_v = {
+        .name = "V",
+        .ena = S3C64XX_NORMALCFG_DOMAIN_V_ON,
+        .pwr_stat = S3C64XX_BLKPWRSTAT_V,
+        .pd = {
+                .power_off = s3c64xx_pd_off,
+                .power_on = s3c64xx_pd_on,
+        },
+};
+
+static struct s3c64xx_pm_domain *s3c64xx_always_on_pm_domains[] = {
+        &s3c64xx_pm_irom,
+};
+
+static struct s3c64xx_pm_domain *s3c64xx_pm_domains[] = {
+        &s3c64xx_pm_etm,
+        &s3c64xx_pm_g,
+        &s3c64xx_pm_v,
+        &s3c64xx_pm_i,
+        &s3c64xx_pm_p,
+        &s3c64xx_pm_s,
+        &s3c64xx_pm_f,
+};
+
 #ifdef CONFIG_S3C_PM_DEBUG_LED_SMDK
 void s3c_pm_debug_smdkled(u32 set, u32 clear)
 {
@@ -89,6 +233,8 @@ static struct sleep_save misc_save[] = {
 
         SAVE_ITEM(S3C64XX_SDMA_SEL),
         SAVE_ITEM(S3C64XX_MODEM_MIFPCON),
+
+        SAVE_ITEM(S3C64XX_NORMAL_CFG),
 };
 
 void s3c_pm_configure_extint(void)
@@ -179,7 +325,26 @@ static void s3c64xx_pm_prepare(void)
         __raw_writel(__raw_readl(S3C64XX_WAKEUP_STAT), S3C64XX_WAKEUP_STAT);
 }
 
-static int s3c64xx_pm_init(void)
+int __init s3c64xx_pm_init(void)
+{
+        int i;
+
+        s3c_pm_init();
+
+        for (i = 0; i < ARRAY_SIZE(s3c64xx_always_on_pm_domains); i++)
+                pm_genpd_init(&s3c64xx_always_on_pm_domains[i]->pd,
+                              &pm_domain_always_on_gov, false);
+
+        for (i = 0; i < ARRAY_SIZE(s3c64xx_pm_domains); i++)
+                pm_genpd_init(&s3c64xx_pm_domains[i]->pd, NULL, false);
+
+        if (dev_get_platdata(&s3c_device_fb.dev))
+                pm_genpd_add_device(&s3c64xx_pm_f.pd, &s3c_device_fb.dev);
+
+        return 0;
+}
+
+static __init int s3c64xx_pm_initcall(void)
 {
         pm_cpu_prep = s3c64xx_pm_prepare;
         pm_cpu_sleep = s3c64xx_cpu_suspend;
@@ -198,5 +363,12 @@ static int s3c64xx_pm_init(void)
 
         return 0;
 }
+arch_initcall(s3c64xx_pm_initcall);
+
+static __init int s3c64xx_pm_late_initcall(void)
+{
+        pm_genpd_poweroff_unused();
 
-arch_initcall(s3c64xx_pm_init);
+        return 0;
+}
+late_initcall(s3c64xx_pm_late_initcall);