From: "Rafael J. Wysocki" <rjw@sisk.pl> To: LKML <linux-kernel@vger.kernel.org> Cc: Linux-sh list <linux-sh@vger.kernel.org>, Linux PM list <linux-pm@vger.kernel.org>, Magnus Damm <magnus.damm@gmail.com>, Paul Mundt <lethal@linux-sh.org>, Thomas Gleixner <tglx@linutronix.de> Subject: [RFC][PATCH 4/6] sh: TMU: Introduce clocksource/clock events suspend/resume routines Date: Sun, 29 Jul 2012 14:16:00 +0000 [thread overview] Message-ID: <201207291616.00569.rjw@sisk.pl> (raw) In-Reply-To: <201207291612.43138.rjw@sisk.pl> Introduce suspend/resume routines for SH TMU clock source and clock event device such that if those devices belong to a PM domain, the generic PM domains framework will be notified that the given domain may be turned off (during system suspend) or that it has to be turned on (during system resume). This change allows the A4R domain on SH7372 to be turned off during system suspend (tested on the Mackerel board). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> --- drivers/clocksource/sh_tmu.c | 39 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 37 insertions(+), 2 deletions(-) Index: linux/drivers/clocksource/sh_tmu.c =================================--- linux.orig/drivers/clocksource/sh_tmu.c +++ linux/drivers/clocksource/sh_tmu.c @@ -33,6 +33,7 @@ #include <linux/slab.h> #include <linux/module.h> #include <linux/pm_domain.h> +#include <linux/pm_runtime.h> struct sh_tmu_priv { void __iomem *mapbase; @@ -214,6 +215,22 @@ static void sh_tmu_clocksource_disable(s sh_tmu_disable(cs_to_sh_tmu(cs)); } +static void sh_tmu_clocksource_suspend(struct clocksource *cs) +{ + struct sh_tmu_priv *p = cs_to_sh_tmu(cs); + + sh_tmu_disable(p); + pm_genpd_syscore_poweroff(&p->pdev->dev); +} + +static void sh_tmu_clocksource_resume(struct clocksource *cs) +{ + struct sh_tmu_priv *p = cs_to_sh_tmu(cs); + + pm_genpd_syscore_poweron(&p->pdev->dev); + sh_tmu_enable(p); +} + static int sh_tmu_register_clocksource(struct sh_tmu_priv *p, char *name, unsigned long rating) { @@ -224,6 +241,8 @@ static int sh_tmu_register_clocksource(s cs->read = sh_tmu_clocksource_read; cs->enable = sh_tmu_clocksource_enable; cs->disable = sh_tmu_clocksource_disable; + cs->suspend = sh_tmu_clocksource_suspend; + cs->resume = sh_tmu_clocksource_resume; cs->mask = CLOCKSOURCE_MASK(32); cs->flags = CLOCK_SOURCE_IS_CONTINUOUS; @@ -301,6 +320,16 @@ static int sh_tmu_clock_event_next(unsig return 0; } +static void sh_tmu_clock_event_suspend(struct clock_event_device *ced) +{ + pm_genpd_syscore_poweroff(&ced_to_sh_tmu(ced)->pdev->dev); +} + +static void sh_tmu_clock_event_resume(struct clock_event_device *ced) +{ + pm_genpd_syscore_poweron(&ced_to_sh_tmu(ced)->pdev->dev); +} + static void sh_tmu_register_clockevent(struct sh_tmu_priv *p, char *name, unsigned long rating) { @@ -316,6 +345,8 @@ static void sh_tmu_register_clockevent(s ced->cpumask = cpumask_of(0); ced->set_next_event = sh_tmu_clock_event_next; ced->set_mode = sh_tmu_clock_event_mode; + ced->suspend = sh_tmu_clock_event_suspend; + ced->resume = sh_tmu_clock_event_resume; dev_info(&p->pdev->dev, "used for clock events\n"); @@ -407,8 +438,12 @@ static int __devinit sh_tmu_probe(struct struct sh_tmu_priv *p = platform_get_drvdata(pdev); int ret; - if (!is_early_platform_device(pdev)) - pm_genpd_dev_always_on(&pdev->dev, true); + if (!is_early_platform_device(pdev)) { + struct sh_timer_config *cfg = pdev->dev.platform_data; + + if (cfg->clocksource_rating || cfg->clockevent_rating) + pm_genpd_dev_always_on(&pdev->dev, true); + } if (p) { dev_info(&pdev->dev, "kept as earlytimer\n");
WARNING: multiple messages have this Message-ID (diff)
From: "Rafael J. Wysocki" <rjw@sisk.pl> To: LKML <linux-kernel@vger.kernel.org> Cc: "Linux-sh list" <linux-sh@vger.kernel.org>, Linux PM list <linux-pm@vger.kernel.org>, Magnus Damm <magnus.damm@gmail.com>, Paul Mundt <lethal@linux-sh.org>, Thomas Gleixner <tglx@linutronix.de> Subject: [RFC][PATCH 4/6] sh: TMU: Introduce clocksource/clock events suspend/resume routines Date: Sun, 29 Jul 2012 16:16:00 +0200 [thread overview] Message-ID: <201207291616.00569.rjw@sisk.pl> (raw) In-Reply-To: <201207291612.43138.rjw@sisk.pl> Introduce suspend/resume routines for SH TMU clock source and clock event device such that if those devices belong to a PM domain, the generic PM domains framework will be notified that the given domain may be turned off (during system suspend) or that it has to be turned on (during system resume). This change allows the A4R domain on SH7372 to be turned off during system suspend (tested on the Mackerel board). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> --- drivers/clocksource/sh_tmu.c | 39 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 37 insertions(+), 2 deletions(-) Index: linux/drivers/clocksource/sh_tmu.c =================================================================== --- linux.orig/drivers/clocksource/sh_tmu.c +++ linux/drivers/clocksource/sh_tmu.c @@ -33,6 +33,7 @@ #include <linux/slab.h> #include <linux/module.h> #include <linux/pm_domain.h> +#include <linux/pm_runtime.h> struct sh_tmu_priv { void __iomem *mapbase; @@ -214,6 +215,22 @@ static void sh_tmu_clocksource_disable(s sh_tmu_disable(cs_to_sh_tmu(cs)); } +static void sh_tmu_clocksource_suspend(struct clocksource *cs) +{ + struct sh_tmu_priv *p = cs_to_sh_tmu(cs); + + sh_tmu_disable(p); + pm_genpd_syscore_poweroff(&p->pdev->dev); +} + +static void sh_tmu_clocksource_resume(struct clocksource *cs) +{ + struct sh_tmu_priv *p = cs_to_sh_tmu(cs); + + pm_genpd_syscore_poweron(&p->pdev->dev); + sh_tmu_enable(p); +} + static int sh_tmu_register_clocksource(struct sh_tmu_priv *p, char *name, unsigned long rating) { @@ -224,6 +241,8 @@ static int sh_tmu_register_clocksource(s cs->read = sh_tmu_clocksource_read; cs->enable = sh_tmu_clocksource_enable; cs->disable = sh_tmu_clocksource_disable; + cs->suspend = sh_tmu_clocksource_suspend; + cs->resume = sh_tmu_clocksource_resume; cs->mask = CLOCKSOURCE_MASK(32); cs->flags = CLOCK_SOURCE_IS_CONTINUOUS; @@ -301,6 +320,16 @@ static int sh_tmu_clock_event_next(unsig return 0; } +static void sh_tmu_clock_event_suspend(struct clock_event_device *ced) +{ + pm_genpd_syscore_poweroff(&ced_to_sh_tmu(ced)->pdev->dev); +} + +static void sh_tmu_clock_event_resume(struct clock_event_device *ced) +{ + pm_genpd_syscore_poweron(&ced_to_sh_tmu(ced)->pdev->dev); +} + static void sh_tmu_register_clockevent(struct sh_tmu_priv *p, char *name, unsigned long rating) { @@ -316,6 +345,8 @@ static void sh_tmu_register_clockevent(s ced->cpumask = cpumask_of(0); ced->set_next_event = sh_tmu_clock_event_next; ced->set_mode = sh_tmu_clock_event_mode; + ced->suspend = sh_tmu_clock_event_suspend; + ced->resume = sh_tmu_clock_event_resume; dev_info(&p->pdev->dev, "used for clock events\n"); @@ -407,8 +438,12 @@ static int __devinit sh_tmu_probe(struct struct sh_tmu_priv *p = platform_get_drvdata(pdev); int ret; - if (!is_early_platform_device(pdev)) - pm_genpd_dev_always_on(&pdev->dev, true); + if (!is_early_platform_device(pdev)) { + struct sh_timer_config *cfg = pdev->dev.platform_data; + + if (cfg->clocksource_rating || cfg->clockevent_rating) + pm_genpd_dev_always_on(&pdev->dev, true); + } if (p) { dev_info(&pdev->dev, "kept as earlytimer\n");
next prev parent reply other threads:[~2012-07-29 14:16 UTC|newest] Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-07-29 14:12 [RFC][PATCH 0/6] PM: Suspend/resume for clock sources/clock event devices in PM domains Rafael J. Wysocki 2012-07-29 14:12 ` Rafael J. Wysocki 2012-07-29 14:13 ` [RFC][PATCH 1/6] PM / Domains: Introduce simplified power on routine for system resume Rafael J. Wysocki 2012-07-29 14:13 ` Rafael J. Wysocki 2012-07-29 14:14 ` [RFC][PATCH 2/6] PM / Domains: Add power off/on function for system core suspend stage Rafael J. Wysocki 2012-07-29 14:14 ` Rafael J. Wysocki 2012-07-29 14:15 ` [RFC][PATCH 3/6] timekeeping: Add suspend and resume of clock event devices Rafael J. Wysocki 2012-07-29 14:15 ` Rafael J. Wysocki 2012-07-29 14:16 ` Rafael J. Wysocki [this message] 2012-07-29 14:16 ` [RFC][PATCH 4/6] sh: TMU: Introduce clocksource/clock events suspend/resume routines Rafael J. Wysocki 2012-07-29 14:16 ` [RFC][PATCH 5/6] sh: CMT: " Rafael J. Wysocki 2012-07-29 14:16 ` Rafael J. Wysocki 2012-07-29 14:17 ` [RFC][PATCH 6/6] sh: MTU2: Introduce clock " Rafael J. Wysocki 2012-07-29 14:17 ` Rafael J. Wysocki 2012-08-05 23:38 ` [PATCH 0/15] PM: Suspend/resume and runtime PM for clock sources/clock event devices in PM domains Rafael J. Wysocki 2012-08-05 23:38 ` Rafael J. Wysocki 2012-08-05 23:39 ` [PATCH 1/15] PM / Domains: Introduce simplified power on routine for system resume Rafael J. Wysocki 2012-08-05 23:39 ` Rafael J. Wysocki 2012-08-05 23:39 ` [PATCH 2/15] PM / Domains: Add power off/on function for system core suspend stage Rafael J. Wysocki 2012-08-05 23:39 ` Rafael J. Wysocki 2012-08-05 23:40 ` [PATCH 3/15] timekeeping: Add suspend and resume of clock event devices Rafael J. Wysocki 2012-08-05 23:40 ` Rafael J. Wysocki 2012-08-05 23:41 ` [PATCH 4/15] sh: TMU: Introduce clocksource/clock events suspend/resume routines Rafael J. Wysocki 2012-08-05 23:41 ` Rafael J. Wysocki 2012-08-05 23:43 ` [PATCH 5/15] sh: CMT: " Rafael J. Wysocki 2012-08-05 23:43 ` Rafael J. Wysocki 2012-08-05 23:43 ` [PATCH 6/15] sh: MTU2: Introduce clock " Rafael J. Wysocki 2012-08-05 23:43 ` Rafael J. Wysocki 2012-08-05 23:44 ` [PATCH 7/15] PM: Reorganize device PM initialization Rafael J. Wysocki 2012-08-05 23:44 ` Rafael J. Wysocki 2012-08-05 23:45 ` [PATCH 8/15] PM / Runtime: Allow helpers to be called by early platform drivers Rafael J. Wysocki 2012-08-05 23:45 ` Rafael J. Wysocki 2012-08-05 23:45 ` [PATCH 9/15] PM / Domains: Rename the always_on device flag to syscore Rafael J. Wysocki 2012-08-05 23:45 ` Rafael J. Wysocki 2012-08-05 23:46 ` [PATCH 10/15] PM / Domains: Move syscore flag from subsys data to struct device Rafael J. Wysocki 2012-08-05 23:46 ` Rafael J. Wysocki 2012-08-05 23:47 ` [PATCH 11/15] PM / Domains: Do not measure start time for "irq safe" devices Rafael J. Wysocki 2012-08-05 23:47 ` Rafael J. Wysocki 2012-08-05 23:48 ` [PATCH 12/15] sh: TMU: Basic runtime PM support Rafael J. Wysocki 2012-08-05 23:48 ` Rafael J. Wysocki 2012-08-05 23:48 ` [PATCH 13/15] sh: CMT: " Rafael J. Wysocki 2012-08-05 23:48 ` Rafael J. Wysocki 2012-08-05 23:49 ` [PATCH 14/15] sh: MTU2: " Rafael J. Wysocki 2012-08-05 23:49 ` Rafael J. Wysocki 2012-08-11 9:39 ` Geert Uytterhoeven 2012-08-11 9:39 ` Geert Uytterhoeven 2012-08-11 22:29 ` Rafael J. Wysocki 2012-08-11 22:29 ` Rafael J. Wysocki 2012-08-05 23:53 ` [PATCH 15/15] PM: Do not use the syscore flag for runtime PM Rafael J. Wysocki 2012-08-05 23:53 ` Rafael J. Wysocki
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