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author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-12-25 22:43:11 (GMT) |
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committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-12-25 22:43:11 (GMT) |
commit | 6d10463b2fa1b6b81091661c1917f26436b38c53 (patch) | |
tree | 1fb5be10a08a3178fb644c9eb5a2a31423985cfa /arch/arm/mach-s3c64xx | |
parent | 0015afaa1f818d38ea9f8e81a84a6aeeca5fdaf0 (diff) | |
parent | a8cf27bee7adc40d91956cf1b9e44d7001f93aba (diff) | |
download | linux-fsl-qoriq-6d10463b2fa1b6b81091661c1917f26436b38c53.tar.xz |
Merge branch 'pm-domains' into pm-for-linus
* pm-domains:
PM / shmobile: Allow the A4R domain to be turned off at run time
PM / input / touchscreen: Make st1232 use device PM QoS constraints
PM / QoS: Introduce dev_pm_qos_add_ancestor_request()
PM / shmobile: Remove the stay_on flag from SH7372's PM domains
PM / shmobile: Don't include SH7372's INTCS in syscore suspend/resume
PM / shmobile: Add support for the sh7372 A4S power domain / sleep mode
ARM: S3C64XX: Implement basic power domain support
PM / shmobile: Use common always on power domain governor
PM / Domains: Provide an always on power domain governor
PM / Domains: Fix default system suspend/resume operations
PM / Domains: Make it possible to assign names to generic PM domains
PM / Domains: fix compilation failure for CONFIG_PM_GENERIC_DOMAINS unset
PM / Domains: Automatically update overoptimistic latency information
PM / Domains: Add default power off governor function (v4)
PM / Domains: Add device stop governor function (v4)
PM / Domains: Rework system suspend callback routines (v2)
PM / Domains: Introduce "save/restore state" device callbacks
PM / Domains: Make it possible to use per-device domain callbacks
Diffstat (limited to 'arch/arm/mach-s3c64xx')
-rw-r--r-- | arch/arm/mach-s3c64xx/Kconfig | 1 | ||||
-rw-r--r-- | arch/arm/mach-s3c64xx/mach-crag6410.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-s3c64xx/pm.c | 176 |
3 files changed, 176 insertions, 3 deletions
diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig index 5552e04..381586c 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 d04b654..707b9b2 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 b375cd5..7d3e81b 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); |