From 119a508c4dc956c859854f40a504c577598b68a8 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Wed, 11 Oct 2023 10:07:17 -0700 Subject: pwm: bcm2835: Add support for suspend/resume MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Similar to other drivers, we need to make sure that the clock is disabled during suspend and re-enabled during resume. Reported-by: Angus Clark Signed-off-by: Florian Fainelli Reviewed-by: Uwe Kleine-König Signed-off-by: Thierry Reding --- drivers/pwm/pwm-bcm2835.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/pwm') diff --git a/drivers/pwm/pwm-bcm2835.c b/drivers/pwm/pwm-bcm2835.c index 8c69ddfea2d0..9777babd5b95 100644 --- a/drivers/pwm/pwm-bcm2835.c +++ b/drivers/pwm/pwm-bcm2835.c @@ -163,6 +163,25 @@ static int bcm2835_pwm_probe(struct platform_device *pdev) return 0; } +static int bcm2835_pwm_suspend(struct device *dev) +{ + struct bcm2835_pwm *pc = dev_get_drvdata(dev); + + clk_disable_unprepare(pc->clk); + + return 0; +} + +static int bcm2835_pwm_resume(struct device *dev) +{ + struct bcm2835_pwm *pc = dev_get_drvdata(dev); + + return clk_prepare_enable(pc->clk); +} + +static DEFINE_SIMPLE_DEV_PM_OPS(bcm2835_pwm_pm_ops, bcm2835_pwm_suspend, + bcm2835_pwm_resume); + static const struct of_device_id bcm2835_pwm_of_match[] = { { .compatible = "brcm,bcm2835-pwm", }, { /* sentinel */ } @@ -173,6 +192,7 @@ static struct platform_driver bcm2835_pwm_driver = { .driver = { .name = "bcm2835-pwm", .of_match_table = bcm2835_pwm_of_match, + .pm = pm_ptr(&bcm2835_pwm_pm_ops), }, .probe = bcm2835_pwm_probe, }; -- cgit v1.2.3