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Commit 8ae28ecb authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

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: default avatarRafael J. Wysocki <rjw@sisk.pl>
Acked-by: default avatarMagnus Damm <damm@opensource.se>
parent a62595d3

arch/arm/mach-shmobile/pm-sh7372.c

+20 −0
Original line number Diff line number Diff line
@@ -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,

	},

};