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-rw-r--r--arch/arm/mach-s3c64xx/Kconfig1
-rw-r--r--arch/arm/mach-s3c64xx/mach-crag6410.c2
-rw-r--r--arch/arm/mach-s3c64xx/pm.c176
-rw-r--r--arch/arm/mach-shmobile/include/mach/common.h4
-rw-r--r--arch/arm/mach-shmobile/include/mach/sh7372.h6
-rw-r--r--arch/arm/mach-shmobile/intc-sh7372.c50
-rw-r--r--arch/arm/mach-shmobile/pm-sh7372.c196
-rw-r--r--arch/arm/mach-shmobile/setup-sh7372.c6
-rw-r--r--arch/arm/mach-shmobile/sleep-sh7372.S21
-rw-r--r--arch/arm/plat-samsung/include/plat/pm.h6
-rw-r--r--drivers/base/power/Makefile2
-rw-r--r--drivers/base/power/domain.c539
-rw-r--r--drivers/base/power/domain_governor.c156
-rw-r--r--drivers/base/power/qos.c25
-rw-r--r--drivers/input/touchscreen/st1232.c13
-rw-r--r--drivers/sh/intc/core.c8
-rw-r--r--drivers/sh/intc/internals.h1
-rw-r--r--include/linux/pm_domain.h103
-rw-r--r--include/linux/pm_qos.h5
-rw-r--r--include/linux/sh_intc.h1
20 files changed, 1099 insertions, 222 deletions
diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
index 5552e048c2be..381586c7b1b2 100644
--- a/arch/arm/mach-s3c64xx/Kconfig
+++ b/arch/arm/mach-s3c64xx/Kconfig
@@ -8,6 +8,7 @@ config PLAT_S3C64XX
bool
depends on ARCH_S3C64XX
select SAMSUNG_WAKEMASK
+ select PM_GENERIC_DOMAINS
default y
help
Base platform code for any Samsung S3C64XX device
diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c
index d04b65448510..707b9b22f9fd 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410.c
@@ -704,7 +704,7 @@ static void __init crag6410_machine_init(void)
regulator_has_full_constraints();
- s3c_pm_init();
+ s3c64xx_pm_init();
}
MACHINE_START(WLF_CRAGG_6410, "Wolfson Cragganmore 6410")
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);
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index 834bd6cd508f..4807623fb71c 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -35,8 +35,8 @@ extern void sh7372_add_standard_devices(void);
extern void sh7372_clock_init(void);
extern void sh7372_pinmux_init(void);
extern void sh7372_pm_init(void);
-extern void sh7372_resume_core_standby_a3sm(void);
-extern int sh7372_do_idle_a3sm(unsigned long unused);
+extern void sh7372_resume_core_standby_sysc(void);
+extern int sh7372_do_idle_sysc(unsigned long sleep_mode);
extern struct clk sh7372_extal1_clk;
extern struct clk sh7372_extal2_clk;
diff --git a/arch/arm/mach-shmobile/include/mach/sh7372.h b/arch/arm/mach-shmobile/include/mach/sh7372.h
index 84532f9629b2..8254ab86f6cd 100644
--- a/arch/arm/mach-shmobile/include/mach/sh7372.h
+++ b/arch/arm/mach-shmobile/include/mach/sh7372.h
@@ -480,11 +480,10 @@ struct platform_device;
struct sh7372_pm_domain {
struct generic_pm_domain genpd;
struct dev_power_governor *gov;
- void (*suspend)(void);
+ int (*suspend)(void);
void (*resume)(void);
unsigned int bit_shift;
bool no_debug;
- bool stay_on;
};
static inline struct sh7372_pm_domain *to_sh7372_pd(struct generic_pm_domain *d)
@@ -499,6 +498,7 @@ extern struct sh7372_pm_domain sh7372_d4;
extern struct sh7372_pm_domain sh7372_a4r;
extern struct sh7372_pm_domain sh7372_a3rv;
extern struct sh7372_pm_domain sh7372_a3ri;
+extern struct sh7372_pm_domain sh7372_a4s;
extern struct sh7372_pm_domain sh7372_a3sp;
extern struct sh7372_pm_domain sh7372_a3sg;
@@ -515,5 +515,7 @@ extern void sh7372_pm_add_subdomain(struct sh7372_pm_domain *sh7372_pd,
extern void sh7372_intcs_suspend(void);
extern void sh7372_intcs_resume(void);
+extern void sh7372_intca_suspend(void);
+extern void sh7372_intca_resume(void);
#endif /* __ASM_SH7372_H__ */
diff --git a/arch/arm/mach-shmobile/intc-sh7372.c b/arch/arm/mach-shmobile/intc-sh7372.c
index 2d8856df80e2..89afcaba99a1 100644
--- a/arch/arm/mach-shmobile/intc-sh7372.c
+++ b/arch/arm/mach-shmobile/intc-sh7372.c
@@ -535,6 +535,7 @@ static struct resource intcs_resources[] __initdata = {
static struct intc_desc intcs_desc __initdata = {
.name = "sh7372-intcs",
.force_enable = ENABLED_INTCS,
+ .skip_syscore_suspend = true,
.resource = intcs_resources,
.num_resources = ARRAY_SIZE(intcs_resources),
.hw = INTC_HW_DESC(intcs_vectors, intcs_groups, intcs_mask_registers,
@@ -611,3 +612,52 @@ void sh7372_intcs_resume(void)
for (k = 0x80; k <= 0x9c; k += 4)
__raw_writeb(ffd5[k], intcs_ffd5 + k);
}
+
+static unsigned short e694[0x200];
+static unsigned short e695[0x200];
+
+void sh7372_intca_suspend(void)
+{
+ int k;
+
+ for (k = 0x00; k <= 0x38; k += 4)
+ e694[k] = __raw_readw(0xe6940000 + k);
+
+ for (k = 0x80; k <= 0xb4; k += 4)
+ e694[k] = __raw_readb(0xe6940000 + k);
+
+ for (k = 0x180; k <= 0x1b4; k += 4)
+ e694[k] = __raw_readb(0xe6940000 + k);
+
+ for (k = 0x00; k <= 0x50; k += 4)
+ e695[k] = __raw_readw(0xe6950000 + k);
+
+ for (k = 0x80; k <= 0xa8; k += 4)
+ e695[k] = __raw_readb(0xe6950000 + k);
+
+ for (k = 0x180; k <= 0x1a8; k += 4)
+ e695[k] = __raw_readb(0xe6950000 + k);
+}
+
+void sh7372_intca_resume(void)
+{
+ int k;
+
+ for (k = 0x00; k <= 0x38; k += 4)
+ __raw_writew(e694[k], 0xe6940000 + k);
+
+ for (k = 0x80; k <= 0xb4; k += 4)
+ __raw_writeb(e694[k], 0xe6940000 + k);
+
+ for (k = 0x180; k <= 0x1b4; k += 4)
+ __raw_writeb(e694[k], 0xe6940000 + k);
+
+ for (k = 0x00; k <= 0x50; k += 4)
+ __raw_writew(e695[k], 0xe6950000 + k);
+
+ for (k = 0x80; k <= 0xa8; k += 4)
+ __raw_writeb(e695[k], 0xe6950000 + k);
+
+ for (k = 0x180; k <= 0x1a8; k += 4)
+ __raw_writeb(e695[k], 0xe6950000 + k);
+}
diff --git a/arch/arm/mach-shmobile/pm-sh7372.c b/arch/arm/mach-shmobile/pm-sh7372.c
index 34bbcbfb1706..77b8fc12fc2f 100644
--- a/arch/arm/mach-shmobile/pm-sh7372.c
+++ b/arch/arm/mach-shmobile/pm-sh7372.c
@@ -82,11 +82,12 @@ static int pd_power_down(struct generic_pm_domain *genpd)
struct sh7372_pm_domain *sh7372_pd = to_sh7372_pd(genpd);
unsigned int mask = 1 << sh7372_pd->bit_shift;
- if (sh7372_pd->suspend)
- sh7372_pd->suspend();
+ if (sh7372_pd->suspend) {
+ int ret = sh7372_pd->suspend();
- if (sh7372_pd->stay_on)
- return 0;
+ if (ret)
+ return ret;
+ }
if (__raw_readl(PSTR) & mask) {
unsigned int retry_count;
@@ -101,8 +102,8 @@ static int pd_power_down(struct generic_pm_domain *genpd)
}
if (!sh7372_pd->no_debug)
- pr_debug("sh7372 power domain down 0x%08x -> PSTR = 0x%08x\n",
- mask, __raw_readl(PSTR));
+ pr_debug("%s: Power off, 0x%08x -> PSTR = 0x%08x\n",
+ genpd->name, mask, __raw_readl(PSTR));
return 0;
}
@@ -113,9 +114,6 @@ static int __pd_power_up(struct sh7372_pm_domain *sh7372_pd, bool do_resume)
unsigned int retry_count;
int ret = 0;
- if (sh7372_pd->stay_on)
- goto out;
-
if (__raw_readl(PSTR) & mask)
goto out;
@@ -133,8 +131,8 @@ static int __pd_power_up(struct sh7372_pm_domain *sh7372_pd, bool do_resume)
ret = -EIO;
if (!sh7372_pd->no_debug)
- pr_debug("sh7372 power domain up 0x%08x -> PSTR = 0x%08x\n",
- mask, __raw_readl(PSTR));
+ pr_debug("%s: Power on, 0x%08x -> PSTR = 0x%08x\n",
+ sh7372_pd->genpd.name, mask, __raw_readl(PSTR));
out:
if (ret == 0 && sh7372_pd->resume && do_resume)
@@ -148,35 +146,60 @@ static int pd_power_up(struct generic_pm_domain *genpd)
return __pd_power_up(to_sh7372_pd(genpd), true);
}
-static void sh7372_a4r_suspend(void)
+static int sh7372_a4r_suspend(void)
{
sh7372_intcs_suspend();
__raw_writel(0x300fffff, WUPRMSK); /* avoid wakeup */
+ return 0;
}
static bool pd_active_wakeup(struct device *dev)
{
- return true;
+ bool (*active_wakeup)(struct device *dev);
+
+ active_wakeup = dev_gpd_data(dev)->ops.active_wakeup;
+ return active_wakeup ? active_wakeup(dev) : true;
}
-static bool sh7372_power_down_forbidden(struct dev_pm_domain *domain)
+static int sh7372_stop_dev(struct device *dev)
{
- return false;
+ int (*stop)(struct device *dev);
+
+ stop = dev_gpd_data(dev)->ops.stop;
+ if (stop) {
+ int ret = stop(dev);
+ if (ret)
+ return ret;
+ }
+ return pm_clk_suspend(dev);
}
-struct dev_power_governor sh7372_always_on_gov = {
- .power_down_ok = sh7372_power_down_forbidden,
-};
+static int sh7372_start_dev(struct device *dev)
+{
+ int (*start)(struct device *dev);
+ int ret;
+
+ ret = pm_clk_resume(dev);
+ if (ret)
+ return ret;
+
+ start = dev_gpd_data(dev)->ops.start;
+ if (start)
+ ret = start(dev);
+
+ return ret;
+}
void sh7372_init_pm_domain(struct sh7372_pm_domain *sh7372_pd)
{
struct generic_pm_domain *genpd = &sh7372_pd->genpd;
+ struct dev_power_governor *gov = sh7372_pd->gov;
- pm_genpd_init(genpd, sh7372_pd->gov, false);
- genpd->stop_device = pm_clk_suspend;
- genpd->start_device = pm_clk_resume;
+ pm_genpd_init(genpd, gov ? : &simple_qos_governor, false);
+ genpd->dev_ops.stop = sh7372_stop_dev;
+ genpd->dev_ops.start = sh7372_start_dev;
+ genpd->dev_ops.active_wakeup = pd_active_wakeup;
genpd->dev_irq_safe = true;
- genpd->active_wakeup = pd_active_wakeup;
genpd->power_off = pd_power_down;
genpd->power_on = pd_power_up;
__pd_power_up(sh7372_pd, false);
@@ -199,48 +222,73 @@ void sh7372_pm_add_subdomain(struct sh7372_pm_domain *sh7372_pd,
}
struct sh7372_pm_domain sh7372_a4lc = {
+ .genpd.name = "A4LC",
.bit_shift = 1,
};
struct sh7372_pm_domain sh7372_a4mp = {
+ .genpd.name = "A4MP",
.bit_shift = 2,
};
struct sh7372_pm_domain sh7372_d4 = {
+ .genpd.name = "D4",
.bit_shift = 3,
};
struct sh7372_pm_domain sh7372_a4r = {
+ .genpd.name = "A4R",
.bit_shift = 5,
- .gov = &sh7372_always_on_gov,
.suspend = sh7372_a4r_suspend,
.resume = sh7372_intcs_resume,
- .stay_on = true,
};
struct sh7372_pm_domain sh7372_a3rv = {
+ .genpd.name = "A3RV",
.bit_shift = 6,
};
struct sh7372_pm_domain sh7372_a3ri = {
+ .genpd.name = "A3RI",
.bit_shift = 8,
};
-struct sh7372_pm_domain sh7372_a3sp = {
- .bit_shift = 11,
- .gov = &sh7372_always_on_gov,
+static int sh7372_a4s_suspend(void)
+{
+ /*
+ * The A4S domain contains the CPU core and therefore it should
+ * only be turned off if the CPU is in use.
+ */
+ return -EBUSY;
+}
+
+struct sh7372_pm_domain sh7372_a4s = {
+ .genpd.name = "A4S",
+ .bit_shift = 10,
+ .gov = &pm_domain_always_on_gov,
.no_debug = true,
+ .suspend = sh7372_a4s_suspend,
};
-static void sh7372_a3sp_init(void)
+static int sh7372_a3sp_suspend(void)
{
- /* serial consoles make use of SCIF hardware located in A3SP,
+ /*
+ * Serial consoles make use of SCIF hardware located in A3SP,
* keep such power domain on if "no_console_suspend" is set.
*/
- sh7372_a3sp.stay_on = !console_suspend_enabled;
+ return console_suspend_enabled ? -EBUSY : 0;
}
+struct sh7372_pm_domain sh7372_a3sp = {
+ .genpd.name = "A3SP",
+ .bit_shift = 11,
+ .gov = &pm_domain_always_on_gov,
+ .no_debug = true,
+ .suspend = sh7372_a3sp_suspend,
+};
+
struct sh7372_pm_domain sh7372_a3sg = {
+ .genpd.name = "A3SG",
.bit_shift = 13,
};
@@ -257,11 +305,16 @@ static int sh7372_do_idle_core_standby(unsigned long unused)
return 0;
}
-static void sh7372_enter_core_standby(void)
+static void sh7372_set_reset_vector(unsigned long address)
{
/* set reset vector, translate 4k */
- __raw_writel(__pa(sh7372_resume_core_standby_a3sm), SBAR);
+ __raw_writel(address, SBAR);
__raw_writel(0, APARMBAREA);
+}
+
+static void sh7372_enter_core_standby(void)
+{
+ sh7372_set_reset_vector(__pa(sh7372_resume_core_standby_sysc));
/* enter sleep mode with SYSTBCR to 0x10 */
__raw_writel(0x10, SYSTBCR);
@@ -274,27 +327,22 @@ static void sh7372_enter_core_standby(void)
#endif
#ifdef CONFIG_SUSPEND
-static void sh7372_enter_a3sm_common(int pllc0_on)
+static void sh7372_enter_sysc(int pllc0_on, unsigned long sleep_mode)
{
- /* set reset vector, translate 4k */
- __raw_writel(__pa(sh7372_resume_core_standby_a3sm), SBAR);
- __raw_writel(0, APARMBAREA);
-
if (pllc0_on)
__raw_writel(0, PLLC01STPCR);
else
__raw_writel(1 << 28, PLLC01STPCR);
- __raw_writel(0, PDNSEL); /* power-down A3SM only, not A4S */
__raw_readl(WUPSFAC); /* read wakeup int. factor before sleep */
- cpu_suspend(0, sh7372_do_idle_a3sm);
+ cpu_suspend(sleep_mode, sh7372_do_idle_sysc);
__raw_readl(WUPSFAC); /* read wakeup int. factor after wakeup */
/* disable reset vector translation */
__raw_writel(0, SBAR);
}
-static int sh7372_a3sm_valid(unsigned long *mskp, unsigned long *msk2p)
+static int sh7372_sysc_valid(unsigned long *mskp, unsigned long *msk2p)
{
unsigned long mstpsr0, mstpsr1, mstpsr2, mstpsr3, mstpsr4;
unsigned long msk, msk2;
@@ -382,7 +430,7 @@ static void sh7372_icr_to_irqcr(unsigned long icr, u16 *irqcr1p, u16 *irqcr2p)
*irqcr2p = irqcr2;
}
-static void sh7372_setup_a3sm(unsigned long msk, unsigned long msk2)
+static void sh7372_setup_sysc(unsigned long msk, unsigned long msk2)
{
u16 irqcrx_low, irqcrx_high, irqcry_low, irqcry_high;
unsigned long tmp;
@@ -415,6 +463,22 @@ static void sh7372_setup_a3sm(unsigned long msk, unsigned long msk2)
__raw_writel((irqcrx_high << 16) | irqcrx_low, IRQCR3);
__raw_writel((irqcry_high << 16) | irqcry_low, IRQCR4);
}
+
+static void sh7372_enter_a3sm_common(int pllc0_on)
+{
+ sh7372_set_reset_vector(__pa(sh7372_resume_core_standby_sysc));
+ sh7372_enter_sysc(pllc0_on, 1 << 12);
+}
+
+static void sh7372_enter_a4s_common(int pllc0_on)
+{
+ sh7372_intca_suspend();
+ memcpy((void *)SMFRAM, sh7372_resume_core_standby_sysc, 0x100);
+ sh7372_set_reset_vector(SMFRAM);
+ sh7372_enter_sysc(pllc0_on, 1 << 10);
+ sh7372_intca_resume();
+}
+
#endif
#ifdef CONFIG_CPU_IDLE
@@ -448,14 +512,20 @@ static int sh7372_enter_suspend(suspend_state_t suspend_state)
unsigned long msk, msk2;
/* check active clocks to determine potential wakeup sources */
- if (sh7372_a3sm_valid(&msk, &msk2)) {
-
+ if (sh7372_sysc_valid(&msk, &msk2)) {
/* convert INTC mask and sense to SYSC mask and sense */
- sh7372_setup_a3sm(msk, msk2);
-
- /* enter A3SM sleep with PLLC0 off */
- pr_debug("entering A3SM\n");
- sh7372_enter_a3sm_common(0);
+ sh7372_setup_sysc(msk, msk2);
+
+ if (!console_suspend_enabled &&
+ sh7372_a4s.genpd.status == GPD_STATE_POWER_OFF) {
+ /* enter A4S sleep with PLLC0 off */
+ pr_debug("entering A4S\n");
+ sh7372_enter_a4s_common(0);
+ } else {
+ /* enter A3SM sleep with PLLC0 off */
+ pr_debug("entering A3SM\n");
+ sh7372_enter_a3sm_common(0);
+ }
} else {
/* default to Core Standby that supports all wakeup sources */
pr_debug("entering Core Standby\n");
@@ -464,9 +534,37 @@ static int sh7372_enter_suspend(suspend_state_t suspend_state)
return 0;
}
+/**
+ * sh7372_pm_notifier_fn - SH7372 PM notifier routine.
+ * @notifier: Unused.
+ * @pm_event: Event being handled.
+ * @unused: Unused.
+ */
+static int sh7372_pm_notifier_fn(struct notifier_block *notifier,
+ unsigned long pm_event, void *unused)
+{
+ switch (pm_event) {
+ case PM_SUSPEND_PREPARE:
+ /*
+ * This is necessary, because the A4R domain has to be "on"
+ * when suspend_device_irqs() and resume_device_irqs() are
+ * executed during system suspend and resume, respectively, so
+ * that those functions don't crash while accessing the INTCS.
+ */
+ pm_genpd_poweron(&sh7372_a4r.genpd);
+ break;
+ case PM_POST_SUSPEND:
+ pm_genpd_poweroff_unused();
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
static void sh7372_suspend_init(void)
{
shmobile_suspend_ops.enter = sh7372_enter_suspend;
+ pm_notifier(sh7372_pm_notifier_fn, 0);
}
#else
static void sh7372_suspend_init(void) {}
@@ -482,8 +580,6 @@ void __init sh7372_pm_init(void)
/* do not convert A3SM, A3SP, A3SG, A4R power down into A4S */
__raw_writel(0, PDNSEL);
- sh7372_a3sp_init();
-
sh7372_suspend_init();
sh7372_cpuidle_init();
}
diff --git a/arch/arm/mach-shmobile/setup-sh7372.c b/arch/arm/mach-shmobile/setup-sh7372.c
index 2380389e6ac5..c197f9d29d04 100644
--- a/arch/arm/mach-shmobile/setup-sh7372.c
+++ b/arch/arm/mach-shmobile/setup-sh7372.c
@@ -994,12 +994,16 @@ void __init sh7372_add_standard_devices(void)
sh7372_init_pm_domain(&sh7372_a4r);
sh7372_init_pm_domain(&sh7372_a3rv);
sh7372_init_pm_domain(&sh7372_a3ri);
- sh7372_init_pm_domain(&sh7372_a3sg);
+ sh7372_init_pm_domain(&sh7372_a4s);
sh7372_init_pm_domain(&sh7372_a3sp);
+ sh7372_init_pm_domain(&sh7372_a3sg);
sh7372_pm_add_subdomain(&sh7372_a4lc, &sh7372_a3rv);
sh7372_pm_add_subdomain(&sh7372_a4r, &sh7372_a4lc);
+ sh7372_pm_add_subdomain(&sh7372_a4s, &sh7372_a3sg);
+ sh7372_pm_add_subdomain(&sh7372_a4s, &sh7372_a3sp);
+
platform_add_devices(sh7372_early_devices,
ARRAY_SIZE(sh7372_early_devices));
diff --git a/arch/arm/mach-shmobile/sleep-sh7372.S b/arch/arm/mach-shmobile/sleep-sh7372.S
index f3ab3c5810ea..1d564674451d 100644
--- a/arch/arm/mach-shmobile/sleep-sh7372.S
+++ b/arch/arm/mach-shmobile/sleep-sh7372.S
@@ -37,13 +37,18 @@
#if defined(CONFIG_SUSPEND) || defined(CONFIG_CPU_IDLE)
.align 12
.text
- .global sh7372_resume_core_standby_a3sm
-sh7372_resume_core_standby_a3sm:
+ .global sh7372_resume_core_standby_sysc
+sh7372_resume_core_standby_sysc:
ldr pc, 1f
1: .long cpu_resume - PAGE_OFFSET + PLAT_PHYS_OFFSET
- .global sh7372_do_idle_a3sm
-sh7372_do_idle_a3sm:
+#define SPDCR 0xe6180008
+
+ /* A3SM & A4S power down */
+ .global sh7372_do_idle_sysc
+sh7372_do_idle_sysc:
+ mov r8, r0 /* sleep mode passed in r0 */
+
/*
* Clear the SCTLR.C bit to prevent further data cache
* allocation. Clearing SCTLR.C would make all the data accesses
@@ -80,13 +85,9 @@ sh7372_do_idle_a3sm:
dsb
dmb
-#define SPDCR 0xe6180008
-#define A3SM (1 << 12)
-
- /* A3SM power down */
+ /* SYSC power down */
ldr r0, =SPDCR
- ldr r1, =A3SM
- str r1, [r0]
+ str r8, [r0]
1:
b 1b
diff --git a/arch/arm/plat-samsung/include/plat/pm.h b/arch/arm/plat-samsung/include/plat/pm.h
index dcf68709f9cf..a6bdee204f2a 100644
--- a/arch/arm/plat-samsung/include/plat/pm.h
+++ b/arch/arm/plat-samsung/include/plat/pm.h
@@ -22,6 +22,7 @@ struct sys_device;
#ifdef CONFIG_PM
extern __init int s3c_pm_init(void);
+extern __init int s3c64xx_pm_init(void);
#else
@@ -29,6 +30,11 @@ static inline int s3c_pm_init(void)
{
return 0;
}
+
+static inline int s3c64xx_pm_init(void)
+{
+ return 0;
+}
#endif
/* configuration for the IRQ mask over sleep */
diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile
index 81676dd17900..2e58ebb1f6c0 100644
--- a/drivers/base/power/Makefile
+++ b/drivers/base/power/Makefile
@@ -3,7 +3,7 @@ obj-$(CONFIG_PM_SLEEP) += main.o wakeup.o
obj-$(CONFIG_PM_RUNTIME) += runtime.o
obj-$(CONFIG_PM_TRACE_RTC) += trace.o
obj-$(CONFIG_PM_OPP) += opp.o
-obj-$(CONFIG_PM_GENERIC_DOMAINS) += domain.o
+obj-$(CONFIG_PM_GENERIC_DOMAINS) += domain.o domain_governor.o
obj-$(CONFIG_HAVE_CLK) += clock_ops.o
ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 6790cf7eba5a..92e6a9048065 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -15,13 +15,44 @@
#include <linux/err.h>
#include <linux/sched.h>
#include <linux/suspend.h>
+#include <linux/export.h>
+
+#define GENPD_DEV_CALLBACK(genpd, type, callback, dev) \
+({ \
+ type (*__routine)(struct device *__d); \
+ type __ret = (type)0; \
+ \
+ __routine = genpd->dev_ops.callback; \
+ if (__routine) { \
+ __ret = __routine(dev); \
+ } else { \
+ __routine = dev_gpd_data(dev)->ops.callback; \
+ if (__routine) \
+ __ret = __routine(dev); \
+ } \
+ __ret; \
+})
+
+#define GENPD_DEV_TIMED_CALLBACK(genpd, type, callback, dev, field, name) \
+({ \
+ ktime_t __start = ktime_get(); \
+ type __retval = GENPD_DEV_CALLBACK(genpd, type, callback, dev); \
+ s64 __elapsed = ktime_to_ns(ktime_sub(ktime_get(), __start)); \
+ struct generic_pm_domain_data *__gpd_data = dev_gpd_data(dev); \
+ if (__elapsed > __gpd_data->td.field) { \
+ __gpd_data->td.field = __elapsed; \
+ dev_warn(dev, name " latency exceeded, new value %lld ns\n", \
+ __elapsed); \
+ } \
+ __retval; \
+})
static LIST_HEAD(gpd_list);
static DEFINE_MUTEX(gpd_list_lock);
#ifdef CONFIG_PM
-static struct generic_pm_domain *dev_to_genpd(struct device *dev)
+struct generic_pm_domain *dev_to_genpd(struct device *dev)
{
if (IS_ERR_OR_NULL(dev->pm_domain))
return ERR_PTR(-EINVAL);
@@ -29,6 +60,31 @@ static struct generic_pm_domain *dev_to_genpd(struct device *dev)
return pd_to_genpd(dev->pm_domain);
}
+static int genpd_stop_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_TIMED_CALLBACK(genpd, int, stop, dev,
+ stop_latency_ns, "stop");
+}
+
+static int genpd_start_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_TIMED_CALLBACK(genpd, int, start, dev,
+ start_latency_ns, "start");
+}
+
+static int genpd_save_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_TIMED_CALLBACK(genpd, int, save_state, dev,
+ save_state_latency_ns, "state save");
+}
+
+static int genpd_restore_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_TIMED_CALLBACK(genpd, int, restore_state, dev,
+ restore_state_latency_ns,
+ "state restore");
+}
+
static bool genpd_sd_counter_dec(struct generic_pm_domain *genpd)
{
bool ret = false;
@@ -145,9 +201,21 @@ int __pm_genpd_poweron(struct generic_pm_domain *genpd)
}
if (genpd->power_on) {
+ ktime_t time_start = ktime_get();
+ s64 elapsed_ns;
+
ret = genpd->power_on(genpd);
if (ret)
goto err;
+
+ elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
+ if (elapsed_ns > genpd->power_on_latency_ns) {
+ genpd->power_on_latency_ns = elapsed_ns;
+ if (genpd->name)
+ pr_warning("%s: Power-on latency exceeded, "
+ "new value %lld ns\n", genpd->name,
+ elapsed_ns);
+ }
}
genpd_set_active(genpd);
@@ -190,7 +258,6 @@ static int __pm_genpd_save_device(struct pm_domain_data *pdd,
{
struct generic_pm_domain_data *gpd_data = to_gpd_data(pdd);
struct device *dev = pdd->dev;
- struct device_driver *drv = dev->driver;
int ret = 0;
if (gpd_data->need_restore)
@@ -198,15 +265,9 @@ static int __pm_genpd_save_device(struct pm_domain_data *pdd,
mutex_unlock(&genpd->lock);
- if (drv && drv->pm && drv->pm->runtime_suspend) {
- if (genpd->start_device)
- genpd->start_device(dev);
-
- ret = drv->pm->runtime_suspend(dev);
-
- if (genpd->stop_device)
- genpd->stop_device(dev);
- }
+ genpd_start_dev(genpd, dev);
+ ret = genpd_save_dev(genpd, dev);
+ genpd_stop_dev(genpd, dev);
mutex_lock(&genpd->lock);
@@ -227,22 +288,15 @@ static void __pm_genpd_restore_device(struct pm_domain_data *pdd,
{
struct generic_pm_domain_data *gpd_data = to_gpd_data(pdd);
struct device *dev = pdd->dev;
- struct device_driver *drv = dev->driver;
if (!gpd_data->need_restore)
return;
mutex_unlock(&genpd->lock);
- if (drv && drv->pm && drv->pm->runtime_resume) {
- if (genpd->start_device)
- genpd->start_device(dev);
-
- drv->pm->runtime_resume(dev);
-
- if (genpd->stop_device)
- genpd->stop_device(dev);
- }
+ genpd_start_dev(genpd, dev);
+ genpd_restore_dev(genpd, dev);
+ genpd_stop_dev(genpd, dev);
mutex_lock(&genpd->lock);
@@ -354,11 +408,16 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
}
if (genpd->power_off) {
+ ktime_t time_start;
+ s64 elapsed_ns;
+
if (atomic_read(&genpd->sd_count) > 0) {
ret = -EBUSY;
goto out;
}
+ time_start = ktime_get();
+
/*
* If sd_count > 0 at this point, one of the subdomains hasn't
* managed to call pm_genpd_poweron() for the master yet after
@@ -372,9 +431,29 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
genpd_set_active(genpd);
goto out;
}
+
+ elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
+ if (elapsed_ns > genpd->power_off_latency_ns) {
+ genpd->power_off_latency_ns = elapsed_ns;
+ if (genpd->name)
+ pr_warning("%s: Power-off latency exceeded, "
+ "new value %lld ns\n", genpd->name,
+ elapsed_ns);
+ }
}
genpd->status = GPD_STATE_POWER_OFF;
+ genpd->power_off_time = ktime_get();
+
+ /* Update PM QoS information for devices in the domain. */
+ list_for_each_entry_reverse(pdd, &genpd->dev_list, list_node) {
+ struct gpd_timing_data *td = &to_gpd_data(pdd)->td;
+
+ pm_runtime_update_max_time_suspended(pdd->dev,
+ td->start_latency_ns +
+ td->restore_state_latency_ns +
+ genpd->power_on_latency_ns);
+ }
list_for_each_entry(link, &genpd->slave_links, slave_node) {
genpd_sd_counter_dec(link->master);
@@ -413,6 +492,8 @@ static void genpd_power_off_work_fn(struct work_struct *work)
static int pm_genpd_runtime_suspend(struct device *dev)
{
struct generic_pm_domain *genpd;
+ bool (*stop_ok)(struct device *__dev);
+ int ret;
dev_dbg(dev, "%s()\n", __func__);
@@ -422,11 +503,16 @@ static int pm_genpd_runtime_suspend(struct device *dev)
might_sleep_if(!genpd->dev_irq_safe);
- if (genpd->stop_device) {
- int ret = genpd->stop_device(dev);
- if (ret)
- return ret;
- }
+ stop_ok = genpd->gov ? genpd->gov->stop_ok : NULL;
+ if (stop_ok && !stop_ok(dev))
+ return -EBUSY;
+
+ ret = genpd_stop_dev(genpd, dev);
+ if (ret)
+ return ret;
+
+ pm_runtime_update_max_time_suspended(dev,
+ dev_gpd_data(dev)->td.start_latency_ns);
/*
* If power.irq_safe is set, this routine will be run with interrupts
@@ -502,8 +588,7 @@ static int pm_genpd_runtime_resume(struct device *dev)
mutex_unlock(&genpd->lock);
out:
- if (genpd->start_device)
- genpd->start_device(dev);
+ genpd_start_dev(genpd, dev);
return 0;
}
@@ -534,6 +619,52 @@ static inline void genpd_power_off_work_fn(struct work_struct *work) {}
#ifdef CONFIG_PM_SLEEP
+static bool genpd_dev_active_wakeup(struct generic_pm_domain *genpd,
+ struct device *dev)
+{
+ return GENPD_DEV_CALLBACK(genpd, bool, active_wakeup, dev);
+}
+
+static int genpd_suspend_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_CALLBACK(genpd, int, suspend, dev);
+}
+
+static int genpd_suspend_late(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_CALLBACK(genpd, int, suspend_late, dev);
+}
+
+static int genpd_resume_early(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_CALLBACK(genpd, int, resume_early, dev);
+}
+
+static int genpd_resume_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_CALLBACK(genpd, int, resume, dev);
+}
+
+static int genpd_freeze_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_CALLBACK(genpd, int, freeze, dev);
+}
+
+static int genpd_freeze_late(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_CALLBACK(genpd, int, freeze_late, dev);
+}
+
+static int genpd_thaw_early(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_CALLBACK(genpd, int, thaw_early, dev);
+}
+
+static int genpd_thaw_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+ return GENPD_DEV_CALLBACK(genpd, int, thaw, dev);
+}
+
/**
* pm_genpd_sync_poweroff - Synchronously power off a PM domain and its masters.
* @genpd: PM domain to power off, if possible.
@@ -590,7 +721,7 @@ static bool resume_needed(struct device *dev, struct generic_pm_domain *genpd)
if (!device_can_wakeup(dev))
return false;
- active_wakeup = genpd->active_wakeup && genpd->active_wakeup(dev);
+ active_wakeup = genpd_dev_active_wakeup(genpd, dev);
return device_may_wakeup(dev) ? active_wakeup : !active_wakeup;
}
@@ -646,7 +777,7 @@ static int pm_genpd_prepare(struct device *dev)
/*
* The PM domain must be in the GPD_STATE_ACTIVE state at this point,
* so pm_genpd_poweron() will return immediately, but if the device
- * is suspended (e.g. it's been stopped by .stop_device()), we need
+ * is suspended (e.g. it's been stopped by genpd_stop_dev()), we need
* to make it operational.
*/
pm_runtime_resume(dev);
@@ -685,7 +816,7 @@ static int pm_genpd_suspend(struct device *dev)
if (IS_ERR(genpd))
return -EINVAL;
- return genpd->suspend_power_off ? 0 : pm_generic_suspend(dev);
+ return genpd->suspend_power_off ? 0 : genpd_suspend_dev(genpd, dev);
}
/**
@@ -710,16 +841,14 @@ static int pm_genpd_suspend_noirq(struct device *dev)
if (genpd->suspend_power_off)
return 0;
- ret = pm_generic_suspend_noirq(dev);
+ ret = genpd_suspend_late(genpd, dev);
if (ret)
return ret;
- if (dev->power.wakeup_path
- && genpd->active_wakeup && genpd->active_wakeup(dev))
+ if (dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev))
return 0;
- if (genpd->stop_device)
- genpd->stop_device(dev);
+ genpd_stop_dev(genpd, dev);
/*
* Since all of the "noirq" callbacks are executed sequentially, it is
@@ -761,10 +890,9 @@ static int pm_genpd_resume_noirq(struct device *dev)
*/
pm_genpd_poweron(genpd);
genpd->suspended_count--;
- if (genpd->start_device)
- genpd->start_device(dev);
+ genpd_start_dev(genpd, dev);
- return pm_generic_resume_noirq(dev);
+ return genpd_resume_early(genpd, dev);
}
/**
@@ -785,7 +913,7 @@ static int pm_genpd_resume(struct device *dev)
if (IS_ERR(genpd))
return -EINVAL;
- return genpd->suspend_power_off ? 0 : pm_generic_resume(dev);
+ return genpd->suspend_power_off ? 0 : genpd_resume_dev(genpd, dev);
}
/**
@@ -806,7 +934,7 @@ static int pm_genpd_freeze(struct device *dev)
if (IS_ERR(genpd))
return -EINVAL;
- return genpd->suspend_power_off ? 0 : pm_generic_freeze(dev);
+ return genpd->suspend_power_off ? 0 : genpd_freeze_dev(genpd, dev);
}
/**
@@ -832,12 +960,11 @@ static int pm_genpd_freeze_noirq(struct device *dev)
if (genpd->suspend_power_off)
return 0;
- ret = pm_generic_freeze_noirq(dev);
+ ret = genpd_freeze_late(genpd, dev);
if (ret)
return ret;
- if (genpd->stop_device)
- genpd->stop_device(dev);
+ genpd_stop_dev(genpd, dev);
return 0;
}
@@ -864,10 +991,9 @@ static int pm_genpd_thaw_noirq(struct device *dev)
if (genpd->suspend_power_off)
return 0;
- if (genpd->start_device)
- genpd->start_device(dev);
+ genpd_start_dev(genpd, dev);
- return pm_generic_thaw_noirq(dev);
+ return genpd_thaw_early(genpd, dev);
}
/**
@@ -888,72 +1014,7 @@ static int pm_genpd_thaw(struct device *dev)
if (IS_ERR(genpd))
return -EINVAL;
- return genpd->suspend_power_off ? 0 : pm_generic_thaw(dev);
-}
-
-/**
- * pm_genpd_dev_poweroff - Power off a device belonging to an I/O PM domain.
- * @dev: Device to suspend.
- *
- * Power off a device under the assumption that its pm_domain field points to
- * the domain member of an object of type struct generic_pm_domain representing
- * a PM domain consisting of I/O devices.
- */
-static int pm_genpd_dev_poweroff(struct device *dev)
-{
- struct generic_pm_domain *genpd;
-
- dev_dbg(dev, "%s()\n", __func__);
-
- genpd = dev_to_genpd(dev);
- if (IS_ERR(genpd))
- return -EINVAL;
-
- return genpd->suspend_power_off ? 0 : pm_generic_poweroff(dev);
-}
-
-/**
- * pm_genpd_dev_poweroff_noirq - Late power off of a device from a PM domain.
- * @dev: Device to suspend.
- *
- * Carry out a late powering off of a device under the assumption that its
- * pm_domain field points to the domain member of an object of type
- * struct generic_pm_domain representing a PM domain consisting of I/O devices.
- */
-static int pm_genpd_dev_poweroff_noirq(struct device *dev)
-{
- struct generic_pm_domain *genpd;
- int ret;
-
- dev_dbg(dev, "%s()\n", __func__);
-
- genpd = dev_to_genpd(dev);
- if (IS_ERR(genpd))
- return -EINVAL;
-
- if (genpd->suspend_power_off)
- return 0;
-
- ret = pm_generic_poweroff_noirq(dev);
- if (ret)
- return ret;
-
- if (dev->power.wakeup_path
- && genpd->active_wakeup && genpd->active_wakeup(dev))
- return 0;
-
- if (genpd->stop_device)
- genpd->stop_device(dev);
-
- /*
- * Since all of the "noirq" callbacks are executed sequentially, it is
- * guaranteed that this function will never run twice in parallel for
- * the same PM domain, so it is not necessary to use locking here.
- */
- genpd->suspended_count++;
- pm_genpd_sync_poweroff(genpd);
-
- return 0;
+ return genpd->suspend_power_off ? 0 : genpd_thaw_dev(genpd, dev);
}
/**
@@ -993,31 +1054,9 @@ static int pm_genpd_restore_noirq(struct device *dev)
pm_genpd_poweron(genpd);
genpd->suspended_count--;
- if (genpd->start_device)
- genpd->start_device(dev);
-
- return pm_generic_restore_noirq(dev);
-}
-
-/**
- * pm_genpd_restore - Restore a device belonging to an I/O power domain.
- * @dev: Device to resume.
- *
- * Restore a device under the assumption that its pm_domain field points to the
- * domain member of an object of type struct generic_pm_domain representing
- * a power domain consisting of I/O devices.
- */
-static int pm_genpd_restore(struct device *dev)
-{
- struct generic_pm_domain *genpd;
-
- dev_dbg(dev, "%s()\n", __func__);
-
- genpd = dev_to_genpd(dev);
- if (IS_ERR(genpd))
- return -EINVAL;
+ genpd_start_dev(genpd, dev);
- return genpd->suspend_power_off ? 0 : pm_generic_restore(dev);
+ return genpd_resume_early(genpd, dev);
}
/**
@@ -1067,20 +1106,19 @@ static void pm_genpd_complete(struct device *dev)
#define pm_genpd_freeze_noirq NULL
#define pm_genpd_thaw_noirq NULL
#define pm_genpd_thaw NULL
-#define pm_genpd_dev_poweroff_noirq NULL
-#define pm_genpd_dev_poweroff NULL
#define pm_genpd_restore_noirq NULL
-#define pm_genpd_restore NULL
#define pm_genpd_complete NULL
#endif /* CONFIG_PM_SLEEP */
/**
- * pm_genpd_add_device - Add a device to an I/O PM domain.
+ * __pm_genpd_add_device - Add a device to an I/O PM domain.
* @genpd: PM domain to add the device to.
* @dev: Device to be added.
+ * @td: Set of PM QoS timing parameters to attach to the device.
*/
-int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev)
+int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
+ struct gpd_timing_data *td)
{
struct generic_pm_domain_data *gpd_data;
struct pm_domain_data *pdd;
@@ -1123,6 +1161,8 @@ int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev)
gpd_data->base.dev = dev;
gpd_data->need_restore = false;
list_add_tail(&gpd_data->base.list_node, &genpd->dev_list);
+ if (td)
+ gpd_data->td = *td;
out:
genpd_release_lock(genpd);
@@ -1280,6 +1320,204 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
}
/**
+ * pm_genpd_add_callbacks - Add PM domain callbacks to a given device.
+ * @dev: Device to add the callbacks to.
+ * @ops: Set of callbacks to add.
+ * @td: Timing data to add to the device along with the callbacks (optional).
+ */
+int pm_genpd_add_callbacks(struct device *dev, struct gpd_dev_ops *ops,
+ struct gpd_timing_data *td)
+{
+ struct pm_domain_data *pdd;
+ int ret = 0;
+
+ if (!(dev && dev->power.subsys_data && ops))
+ return -EINVAL;
+
+ pm_runtime_disable(dev);
+ device_pm_lock();
+
+ pdd = dev->power.subsys_data->domain_data;
+ if (pdd) {
+ struct generic_pm_domain_data *gpd_data = to_gpd_data(pdd);
+
+ gpd_data->ops = *ops;
+ if (td)
+ gpd_data->td = *td;
+ } else {
+ ret = -EINVAL;
+ }
+
+ device_pm_unlock();
+ pm_runtime_enable(dev);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(pm_genpd_add_callbacks);
+
+/**
+ * __pm_genpd_remove_callbacks - Remove PM domain callbacks from a given device.
+ * @dev: Device to remove the callbacks from.
+ * @clear_td: If set, clear the device's timing data too.
+ */
+int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td)
+{
+ struct pm_domain_data *pdd;
+ int ret = 0;
+
+ if (!(dev && dev->power.subsys_data))
+ return -EINVAL;
+
+ pm_runtime_disable(dev);
+ device_pm_lock();
+
+ pdd = dev->power.subsys_data->domain_data;
+ if (pdd) {
+ struct generic_pm_domain_data *gpd_data = to_gpd_data(pdd);
+
+ gpd_data->ops = (struct gpd_dev_ops){ 0 };
+ if (clear_td)
+ gpd_data->td = (struct gpd_timing_data){ 0 };
+ } else {
+ ret = -EINVAL;
+ }
+
+ device_pm_unlock();
+ pm_runtime_enable(dev);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(__pm_genpd_remove_callbacks);
+
+/* Default device callbacks for generic PM domains. */
+
+/**
+ * pm_genpd_default_save_state - Default "save device state" for PM domians.
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_save_state(struct device *dev)
+{
+ int (*cb)(struct device *__dev);
+ struct device_driver *drv = dev->driver;
+
+ cb = dev_gpd_data(dev)->ops.save_state;
+ if (cb)
+ return cb(dev);
+
+ if (drv && drv->pm && drv->pm->runtime_suspend)
+ return drv->pm->runtime_suspend(dev);
+
+ return 0;
+}
+
+/**
+ * pm_genpd_default_restore_state - Default PM domians "restore device state".
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_restore_state(struct device *dev)
+{
+ int (*cb)(struct device *__dev);
+ struct device_driver *drv = dev->driver;
+
+ cb = dev_gpd_data(dev)->ops.restore_state;
+ if (cb)
+ return cb(dev);
+
+ if (drv && drv->pm && drv->pm->runtime_resume)
+ return drv->pm->runtime_resume(dev);
+
+ return 0;
+}
+
+/**
+ * pm_genpd_default_suspend - Default "device suspend" for PM domians.
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_suspend(struct device *dev)
+{
+ int (*cb)(struct device *__dev) = dev_gpd_data(dev)->ops.suspend;
+
+ return cb ? cb(dev) : pm_generic_suspend(dev);
+}
+
+/**
+ * pm_genpd_default_suspend_late - Default "late device suspend" for PM domians.
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_suspend_late(struct device *dev)
+{
+ int (*cb)(struct device *__dev) = dev_gpd_data(dev)->ops.suspend_late;
+
+ return cb ? cb(dev) : pm_generic_suspend_noirq(dev);
+}
+
+/**
+ * pm_genpd_default_resume_early - Default "early device resume" for PM domians.
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_resume_early(struct device *dev)
+{
+ int (*cb)(struct device *__dev) = dev_gpd_data(dev)->ops.resume_early;
+
+ return cb ? cb(dev) : pm_generic_resume_noirq(dev);
+}
+
+/**
+ * pm_genpd_default_resume - Default "device resume" for PM domians.
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_resume(struct device *dev)
+{
+ int (*cb)(struct device *__dev) = dev_gpd_data(dev)->ops.resume;
+
+ return cb ? cb(dev) : pm_generic_resume(dev);
+}
+
+/**
+ * pm_genpd_default_freeze - Default "device freeze" for PM domians.
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_freeze(struct device *dev)
+{
+ int (*cb)(struct device *__dev) = dev_gpd_data(dev)->ops.freeze;
+
+ return cb ? cb(dev) : pm_generic_freeze(dev);
+}
+
+/**
+ * pm_genpd_default_freeze_late - Default "late device freeze" for PM domians.
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_freeze_late(struct device *dev)
+{
+ int (*cb)(struct device *__dev) = dev_gpd_data(dev)->ops.freeze_late;
+
+ return cb ? cb(dev) : pm_generic_freeze_noirq(dev);
+}
+
+/**
+ * pm_genpd_default_thaw_early - Default "early device thaw" for PM domians.
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_thaw_early(struct device *dev)
+{
+ int (*cb)(struct device *__dev) = dev_gpd_data(dev)->ops.thaw_early;
+
+ return cb ? cb(dev) : pm_generic_thaw_noirq(dev);
+}
+
+/**
+ * pm_genpd_default_thaw - Default "device thaw" for PM domians.
+ * @dev: Device to handle.
+ */
+static int pm_genpd_default_thaw(struct device *dev)
+{
+ int (*cb)(struct device *__dev) = dev_gpd_data(dev)->ops.thaw;
+
+ return cb ? cb(dev) : pm_generic_thaw(dev);
+}
+
+/**
* pm_genpd_init - Initialize a generic I/O PM domain object.
* @genpd: PM domain object to initialize.
* @gov: PM domain governor to associate with the domain (may be NULL).
@@ -1305,6 +1543,7 @@ void pm_genpd_init(struct generic_pm_domain *genpd,
genpd->resume_count = 0;
genpd->device_count = 0;
genpd->suspended_count = 0;
+ genpd->max_off_time_ns = -1;
genpd->domain.ops.runtime_suspend = pm_genpd_runtime_suspend;
genpd->domain.ops.runtime_resume = pm_genpd_runtime_resume;
genpd->domain.ops.runtime_idle = pm_generic_runtime_idle;
@@ -1317,11 +1556,21 @@ void pm_genpd_init(struct generic_pm_domain *genpd,
genpd->domain.ops.freeze_noirq = pm_genpd_freeze_noirq;
genpd->domain.ops.thaw_noirq = pm_genpd_thaw_noirq;
genpd->domain.ops.thaw = pm_genpd_thaw;
- genpd->domain.ops.poweroff = pm_genpd_dev_poweroff;
- genpd->domain.ops.poweroff_noirq = pm_genpd_dev_poweroff_noirq;
+ genpd->domain.ops.poweroff = pm_genpd_suspend;
+ genpd->domain.ops.poweroff_noirq = pm_genpd_suspend_noirq;
genpd->domain.ops.restore_noirq = pm_genpd_restore_noirq;
- genpd->domain.ops.restore = pm_genpd_restore;
+ genpd->domain.ops.restore = pm_genpd_resume;
genpd->domain.ops.complete = pm_genpd_complete;
+ genpd->dev_ops.save_state = pm_genpd_default_save_state;
+ genpd->dev_ops.restore_state = pm_genpd_default_restore_state;
+ genpd->dev_ops.suspend = pm_genpd_default_suspend;
+ genpd->dev_ops.suspend_late = pm_genpd_default_suspend_late;
+ genpd->dev_ops.resume_early = pm_genpd_default_resume_early;
+ genpd->dev_ops.resume = pm_genpd_default_resume;
+ genpd->dev_ops.freeze = pm_genpd_default_freeze;
+ genpd->dev_ops.freeze_late = pm_genpd_default_freeze_late;
+ genpd->dev_ops.thaw_early = pm_genpd_default_thaw_early;
+ genpd->dev_ops.thaw = pm_genpd_default_thaw;
mutex_lock(&gpd_list_lock);
list_add(&genpd->gpd_list_node, &gpd_list);
mutex_unlock(&gpd_list_lock);
diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c
new file mode 100644
index 000000000000..51527ee92d10
--- /dev/null
+++ b/drivers/base/power/domain_governor.c
@@ -0,0 +1,156 @@
+/*
+ * drivers/base/power/domain_governor.c - Governors for device PM domains.
+ *
+ * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
+ *
+ * This file is released under the GPLv2.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/pm_domain.h>
+#include <linux/pm_qos.h>
+#include <linux/hrtimer.h>
+
+/**
+ * default_stop_ok - Default PM domain governor routine for stopping devices.
+ * @dev: Device to check.
+ */
+bool default_stop_ok(struct device *dev)
+{
+ struct gpd_timing_data *td = &dev_gpd_data(dev)->td;
+
+ dev_dbg(dev, "%s()\n", __func__);
+
+ if (dev->power.max_time_suspended_ns < 0 || td->break_even_ns == 0)
+ return true;
+
+ return td->stop_latency_ns + td->start_latency_ns < td->break_even_ns
+ && td->break_even_ns < dev->power.max_time_suspended_ns;
+}
+
+/**
+ * default_power_down_ok - Default generic PM domain power off governor routine.
+ * @pd: PM domain to check.
+ *
+ * This routine must be executed under the PM domain's lock.
+ */
+static bool default_power_down_ok(struct dev_pm_domain *pd)
+{
+ struct generic_pm_domain *genpd = pd_to_genpd(pd);
+ struct gpd_link *link;
+ struct pm_domain_data *pdd;
+ s64 min_dev_off_time_ns;
+ s64 off_on_time_ns;
+ ktime_t time_now = ktime_get();
+
+ off_on_time_ns = genpd->power_off_latency_ns +
+ genpd->power_on_latency_ns;
+ /*
+ * It doesn't make sense to remove power from the domain if saving
+ * the state of all devices in it and the power off/power on operations
+ * take too much time.
+ *
+ * All devices in this domain have been stopped already at this point.
+ */
+ list_for_each_entry(pdd, &genpd->dev_list, list_node) {
+ if (pdd->dev->driver)
+ off_on_time_ns +=
+ to_gpd_data(pdd)->td.save_state_latency_ns;
+ }
+
+ /*
+ * Check if subdomains can be off for enough time.
+ *
+ * All subdomains have been powered off already at this point.
+ */
+ list_for_each_entry(link, &genpd->master_links, master_node) {
+ struct generic_pm_domain *sd = link->slave;
+ s64 sd_max_off_ns = sd->max_off_time_ns;
+
+ if (sd_max_off_ns < 0)
+ continue;
+
+ sd_max_off_ns -= ktime_to_ns(ktime_sub(time_now,
+ sd->power_off_time));
+ /*
+ * Check if the subdomain is allowed to be off long enough for
+ * the current domain to turn off and on (that's how much time
+ * it will have to wait worst case).
+ */
+ if (sd_max_off_ns <= off_on_time_ns)
+ return false;
+ }
+
+ /*
+ * Check if the devices in the domain can be off enough time.
+ */
+ min_dev_off_time_ns = -1;
+ list_for_each_entry(pdd, &genpd->dev_list, list_node) {
+ struct gpd_timing_data *td;
+ struct device *dev = pdd->dev;
+ s64 dev_off_time_ns;
+
+ if (!dev->driver || dev->power.max_time_suspended_ns < 0)
+ continue;
+
+ td = &to_gpd_data(pdd)->td;
+ dev_off_time_ns = dev->power.max_time_suspended_ns -
+ (td->start_latency_ns + td->restore_state_latency_ns +
+ ktime_to_ns(ktime_sub(time_now,
+ dev->power.suspend_time)));
+ if (dev_off_time_ns <= off_on_time_ns)
+ return false;
+
+ if (min_dev_off_time_ns > dev_off_time_ns
+ || min_dev_off_time_ns < 0)
+ min_dev_off_time_ns = dev_off_time_ns;
+ }
+
+ if (min_dev_off_time_ns < 0) {
+ /*
+ * There are no latency constraints, so the domain can spend
+ * arbitrary time in the "off" state.
+ */
+ genpd->max_off_time_ns = -1;
+ return true;
+ }
+
+ /*
+ * The difference between the computed minimum delta and the time needed
+ * to turn the domain on is the maximum theoretical time this domain can
+ * spend in the "off" state.
+ */
+ min_dev_off_time_ns -= genpd->power_on_latency_ns;
+
+ /*
+ * If the difference between the computed minimum delta and the time
+ * needed to turn the domain off and back on on is smaller than the
+ * domain's power break even time, removing power from the domain is not
+ * worth it.
+ */
+ if (genpd->break_even_ns >
+ min_dev_off_time_ns - genpd->power_off_latency_ns)
+ return false;
+
+ genpd->max_off_time_ns = min_dev_off_time_ns;
+ return true;
+}
+
+struct dev_power_governor simple_qos_governor = {
+ .stop_ok = default_stop_ok,
+ .power_down_ok = default_power_down_ok,
+};
+
+static bool always_on_power_down_ok(struct dev_pm_domain *domain)
+{
+ return false;
+}
+
+/**
+ * pm_genpd_gov_always_on - A governor implementing an always-on policy
+ */
+struct dev_power_governor pm_domain_always_on_gov = {
+ .power_down_ok = always_on_power_down_ok,
+ .stop_ok = default_stop_ok,
+};
diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c
index 03f4bd069ca8..c5d358837461 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -420,3 +420,28 @@ int dev_pm_qos_remove_global_notifier(struct notifier_block *notifier)
return blocking_notifier_chain_unregister(&dev_pm_notifiers, notifier);
}
EXPORT_SYMBOL_GPL(dev_pm_qos_remove_global_notifier);
+
+/**
+ * dev_pm_qos_add_ancestor_request - Add PM QoS request for device's ancestor.
+ * @dev: Device whose ancestor to add the request for.
+ * @req: Pointer to the preallocated handle.
+ * @value: Constraint latency value.
+ */
+int dev_pm_qos_add_ancestor_request(struct device *dev,
+ struct dev_pm_qos_request *req, s32 value)
+{
+ struct device *ancestor = dev->parent;
+ int error = -ENODEV;
+
+ while (ancestor && !ancestor->power.ignore_children)
+ ancestor = ancestor->parent;
+
+ if (ancestor)
+ error = dev_pm_qos_add_request(ancestor, req, value);
+
+ if (error)
+ req->dev = NULL;
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(dev_pm_qos_add_ancestor_request);
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c
index 4ab371358b33..8825fe37d433 100644
--- a/drivers/input/touchscreen/st1232.c
+++ b/drivers/input/touchscreen/st1232.c
@@ -23,6 +23,7 @@
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/pm_qos.h>
#include <linux/slab.h>
#include <linux/types.h>
@@ -46,6 +47,7 @@ struct st1232_ts_data {
struct i2c_client *client;
struct input_dev *input_dev;
struct st1232_ts_finger finger[MAX_FINGERS];
+ struct dev_pm_qos_request low_latency_req;
};
static int st1232_ts_read_data(struct st1232_ts_data *ts)
@@ -118,8 +120,17 @@ static irqreturn_t st1232_ts_irq_handler(int irq, void *dev_id)
}
/* SYN_MT_REPORT only if no contact */
- if (!count)
+ if (!count) {
input_mt_sync(input_dev);
+ if (ts->low_latency_req.dev) {
+ dev_pm_qos_remove_request(&ts->low_latency_req);
+ ts->low_latency_req.dev = NULL;
+ }
+ } else if (!ts->low_latency_req.dev) {
+ /* First contact, request 100 us latency. */
+ dev_pm_qos_add_ancestor_request(&ts->client->dev,
+ &ts->low_latency_req, 100);
+ }
/* SYN_REPORT */
input_sync(input_dev);
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index 8b7a141ff35e..be5a025eeca3 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -354,6 +354,8 @@ int __init register_intc_controller(struct intc_desc *desc)
if (desc->force_enable)
intc_enable_disable_enum(desc, d, desc->force_enable, 1);
+ d->skip_suspend = desc->skip_syscore_suspend;
+
nr_intc_controllers++;
return 0;
@@ -386,6 +388,9 @@ static int intc_suspend(void)
list_for_each_entry(d, &intc_list, list) {
int irq;
+ if (d->skip_suspend)
+ continue;
+
/* enable wakeup irqs belonging to this intc controller */
for_each_active_irq(irq) {
struct irq_data *data;
@@ -409,6 +414,9 @@ static void intc_resume(void)
list_for_each_entry(d, &intc_list, list) {
int irq;
+ if (d->skip_suspend)
+ continue;
+
for_each_active_irq(irq) {
struct irq_data *data;
struct irq_chip *chip;
diff --git a/drivers/sh/intc/internals.h b/drivers/sh/intc/internals.h
index 5b934851efa8..b3fe1cf25a28 100644
--- a/drivers/sh/intc/internals.h
+++ b/drivers/sh/intc/internals.h
@@ -67,6 +67,7 @@ struct intc_desc_int {
struct intc_window *window;
unsigned int nr_windows;
struct irq_chip chip;
+ bool skip_suspend;
};
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 65633e5a2bc0..a03a0ad998b8 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -10,6 +10,7 @@
#define _LINUX_PM_DOMAIN_H
#include <linux/device.h>
+#include <linux/err.h>
enum gpd_status {
GPD_STATE_ACTIVE = 0, /* PM domain is active */
@@ -21,6 +22,23 @@ enum gpd_status {
struct dev_power_governor {
bool (*power_down_ok)(struct dev_pm_domain *domain);
+ bool (*stop_ok)(struct device *dev);
+};
+
+struct gpd_dev_ops {
+ int (*start)(struct device *dev);
+ int (*stop)(struct device *dev);
+ int (*save_state)(struct device *dev);
+ int (*restore_state)(struct device *dev);
+ int (*suspend)(struct device *dev);
+ int (*suspend_late)(struct device *dev);
+ int (*resume_early)(struct device *dev);
+ int (*resume)(struct device *dev);
+ int (*freeze)(struct device *dev);
+ int (*freeze_late)(struct device *dev);
+ int (*thaw_early)(struct device *dev);
+ int (*thaw)(struct device *dev);
+ bool (*active_wakeup)(struct device *dev);
};
struct generic_pm_domain {
@@ -32,6 +50,7 @@ struct generic_pm_domain {
struct mutex lock;
struct dev_power_governor *gov;
struct work_struct power_off_work;
+ char *name;
unsigned int in_progress; /* Number of devices being suspended now */
atomic_t sd_count; /* Number of subdomains with power "on" */
enum gpd_status status; /* Current state of the domain */
@@ -44,10 +63,13 @@ struct generic_pm_domain {
bool suspend_power_off; /* Power status before system suspend */
bool dev_irq_safe; /* Device callbacks are IRQ-safe */
int (*power_off)(struct generic_pm_domain *domain);
+ s64 power_off_latency_ns;
int (*power_on)(struct generic_pm_domain *domain);
- int (*start_device)(struct device *dev);
- int (*stop_device)(struct device *dev);
- bool (*active_wakeup)(struct device *dev);
+ s64 power_on_latency_ns;
+ struct gpd_dev_ops dev_ops;
+ s64 break_even_ns; /* Power break even for the entire domain. */
+ s64 max_off_time_ns; /* Maximum allowed "suspended" time. */
+ ktime_t power_off_time;
};
static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
@@ -62,8 +84,18 @@ struct gpd_link {
struct list_head slave_node;
};
+struct gpd_timing_data {
+ s64 stop_latency_ns;
+ s64 start_latency_ns;
+ s64 save_state_latency_ns;
+ s64 restore_state_latency_ns;
+ s64 break_even_ns;
+};
+
struct generic_pm_domain_data {
struct pm_domain_data base;
+ struct gpd_dev_ops ops;
+ struct gpd_timing_data td;
bool need_restore;
};
@@ -73,18 +105,54 @@ static inline struct generic_pm_domain_data *to_gpd_data(struct pm_domain_data *
}
#ifdef CONFIG_PM_GENERIC_DOMAINS
-extern int pm_genpd_add_device(struct generic_pm_domain *genpd,
- struct device *dev);
+static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
+{
+ return to_gpd_data(dev->power.subsys_data->domain_data);
+}
+
+extern struct dev_power_governor simple_qos_governor;
+
+extern struct generic_pm_domain *dev_to_genpd(struct device *dev);
+extern int __pm_genpd_add_device(struct generic_pm_domain *genpd,
+ struct device *dev,
+ struct gpd_timing_data *td);
+
+static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
+ struct device *dev)
+{
+ return __pm_genpd_add_device(genpd, dev, NULL);
+}
+
extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
struct device *dev);
extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *new_subdomain);
extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *target);
+extern int pm_genpd_add_callbacks(struct device *dev,
+ struct gpd_dev_ops *ops,
+ struct gpd_timing_data *td);
+extern int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td);
extern void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
+
extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
+
+extern bool default_stop_ok(struct device *dev);
+
+extern struct dev_power_governor pm_domain_always_on_gov;
#else
+
+static inline struct generic_pm_domain *dev_to_genpd(struct device *dev)
+{
+ return ERR_PTR(-ENOSYS);
+}
+static inline int __pm_genpd_add_device(struct generic_pm_domain *genpd,
+ struct device *dev,
+ struct gpd_timing_data *td)
+{
+ return -ENOSYS;
+}
static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
struct device *dev)
{
@@ -105,14 +173,35 @@ static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
{
return -ENOSYS;
}
-static inline void pm_genpd_init(struct generic_pm_domain *genpd,
- struct dev_power_governor *gov, bool is_off) {}
+static inline int pm_genpd_add_callbacks(struct device *dev,
+ struct gpd_dev_ops *ops,
+ struct gpd_timing_data *td)
+{
+ return -ENOSYS;
+}
+static inline int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td)
+{
+ return -ENOSYS;
+}
+static inline void pm_genpd_init(struct generic_pm_domain *genpd, bool is_off)
+{
+}
static inline int pm_genpd_poweron(struct generic_pm_domain *genpd)
{
return -ENOSYS;
}
+static inline bool default_stop_ok(struct device *dev)
+{
+ return false;
+}
+#define pm_domain_always_on_gov NULL
#endif
+static inline int pm_genpd_remove_callbacks(struct device *dev)
+{
+ return __pm_genpd_remove_callbacks(dev, true);
+}
+
#ifdef CONFIG_PM_GENERIC_DOMAINS_RUNTIME
extern void genpd_queue_power_off_work(struct generic_pm_domain *genpd);
extern void pm_genpd_poweroff_unused(void);
diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
index 775a3236343d..e5bbcbaa6f57 100644
--- a/include/linux/pm_qos.h
+++ b/include/linux/pm_qos.h
@@ -92,6 +92,8 @@ int dev_pm_qos_add_global_notifier(struct notifier_block *notifier);
int dev_pm_qos_remove_global_notifier(struct notifier_block *notifier);
void dev_pm_qos_constraints_init(struct device *dev);
void dev_pm_qos_constraints_destroy(struct device *dev);
+int dev_pm_qos_add_ancestor_request(struct device *dev,
+ struct dev_pm_qos_request *req, s32 value);
#else
static inline int pm_qos_update_target(struct pm_qos_constraints *c,
struct plist_node *node,
@@ -153,6 +155,9 @@ static inline void dev_pm_qos_constraints_destroy(struct device *dev)
{
dev->power.power_state = PMSG_INVALID;
}
+static inline int dev_pm_qos_add_ancestor_request(struct device *dev,
+ struct dev_pm_qos_request *req, s32 value)
+ { return 0; }
#endif
#endif
diff --git a/include/linux/sh_intc.h b/include/linux/sh_intc.h
index 5812fefbcedf..b160645f5599 100644
--- a/include/linux/sh_intc.h
+++ b/include/linux/sh_intc.h
@@ -95,6 +95,7 @@ struct intc_desc {
unsigned int num_resources;
intc_enum force_enable;
intc_enum force_disable;
+ bool skip_syscore_suspend;
struct intc_hw_desc hw;
};
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