From d3116e4369cd56ed758def845a15491e15093465 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 6 Aug 2012 01:43:41 +0200 Subject: [PATCH] sh: MTU2: Introduce clock events suspend/resume routines Introduce suspend/resume routines for SH MTU2 clock event devices 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). Signed-off-by: Rafael J. Wysocki Acked-by: Magnus Damm --- drivers/clocksource/sh_mtu2.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c index d9b76ca64a61..a55bb905812e 100644 --- a/drivers/clocksource/sh_mtu2.c +++ b/drivers/clocksource/sh_mtu2.c @@ -208,6 +208,16 @@ static void sh_mtu2_clock_event_mode(enum clock_event_mode mode, } } +static void sh_mtu2_clock_event_suspend(struct clock_event_device *ced) +{ + pm_genpd_syscore_poweroff(&ced_to_sh_mtu2(ced)->pdev->dev); +} + +static void sh_mtu2_clock_event_resume(struct clock_event_device *ced) +{ + pm_genpd_syscore_poweron(&ced_to_sh_mtu2(ced)->pdev->dev); +} + static void sh_mtu2_register_clockevent(struct sh_mtu2_priv *p, char *name, unsigned long rating) { @@ -221,6 +231,8 @@ static void sh_mtu2_register_clockevent(struct sh_mtu2_priv *p, ced->rating = rating; ced->cpumask = cpumask_of(0); ced->set_mode = sh_mtu2_clock_event_mode; + ced->suspend = sh_mtu2_clock_event_suspend; + ced->resume = sh_mtu2_clock_event_resume; dev_info(&p->pdev->dev, "used for clock events\n"); clockevents_register_device(ced); @@ -307,8 +319,12 @@ static int __devinit sh_mtu2_probe(struct platform_device *pdev) struct sh_mtu2_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->clockevent_rating) + pm_genpd_dev_always_on(&pdev->dev, true); + } if (p) { dev_info(&pdev->dev, "kept as earlytimer\n"); -- 2.39.5