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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2012-08-08 00:27:10 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-09-04 01:44:58 +0200 |
| commit | 8ae28ecb8726db5904f0f703f100315377b0172b (patch) | |
| tree | b6009b63979b0dc5dce9a80e6e36e3ad01aef1d1 /arch | |
| parent | ARM: shmobile: Make rmobile_init_pm_domain() static (diff) | |
| download | linux-8ae28ecb8726db5904f0f703f100315377b0172b.tar.xz linux-8ae28ecb8726db5904f0f703f100315377b0172b.zip | |
ARM: shmobile: Set PM domain on/off latencies directly
The results of adaptive latency computations in __pm_genpd_poweron()
and pm_genpd_poweroff() show that the power on/power off latencies
of all power domains in SH7372 are a little below 250 us. Therefore,
if 250 us is used as the common initial value of the latency fields
in struct generic_pm_domain for all domains, the latency values
will never have to change at run time and there won't be any overhead
related to re-computation of the corresponding PM QoS data.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-shmobile/pm-sh7372.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/pm-sh7372.c b/arch/arm/mach-shmobile/pm-sh7372.c index 0d722b5b5219..9d055a9f27c8 100644 --- a/arch/arm/mach-shmobile/pm-sh7372.c +++ b/arch/arm/mach-shmobile/pm-sh7372.c @@ -71,6 +71,8 @@ #ifdef CONFIG_PM +#define PM_DOMAIN_ON_OFF_LATENCY_NS 250000 + static int sh7372_a4r_pd_suspend(void) { sh7372_intcs_suspend(); @@ -110,32 +112,46 @@ static int sh7372_a3sp_pd_suspend(void) static struct rmobile_pm_domain sh7372_pm_domains[] = { { .genpd.name = "A4LC", + .genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, + .genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, .bit_shift = 1, }, { .genpd.name = "A4MP", + .genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, + .genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, .bit_shift = 2, }, { .genpd.name = "D4", + .genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, + .genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, .bit_shift = 3, }, { .genpd.name = "A4R", + .genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, + .genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, .bit_shift = 5, .suspend = sh7372_a4r_pd_suspend, .resume = sh7372_intcs_resume, }, { .genpd.name = "A3RV", + .genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, + .genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, .bit_shift = 6, }, { .genpd.name = "A3RI", + .genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, + .genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, .bit_shift = 8, }, { .genpd.name = "A4S", + .genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, + .genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, .bit_shift = 10, .gov = &pm_domain_always_on_gov, .no_debug = true, @@ -144,6 +160,8 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = { }, { .genpd.name = "A3SP", + .genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, + .genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, .bit_shift = 11, .gov = &pm_domain_always_on_gov, .no_debug = true, @@ -151,6 +169,8 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = { }, { .genpd.name = "A3SG", + .genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, + .genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS, .bit_shift = 13, }, }; |