Commit 119a508c authored by Florian Fainelli's avatar Florian Fainelli Committed by Thierry Reding
Browse files

pwm: bcm2835: Add support for suspend/resume 



Similar to other drivers, we need to make sure that the clock is
disabled during suspend and re-enabled during resume.

Reported-by: default avatarAngus Clark <angus.clark@broadcom.com>
Signed-off-by: default avatarFlorian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
parent aacbd654

drivers/pwm/pwm-bcm2835.c

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

};