Messages in this thread Patch in this message | | | From | Florian Fainelli <> | Subject | [PATCH v2] pwm: bcm2835: Add support for suspend/resume | Date | Mon, 9 Oct 2023 13:42:26 -0700 |
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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 <angus.clark@broadcom.com> Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com> --- Changes in v2:
- use DEFINE_SIMPLE_DEV_PM_OPS as suggested by Uwe
drivers/pwm/pwm-bcm2835.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/pwm/pwm-bcm2835.c b/drivers/pwm/pwm-bcm2835.c index bdfc2a5ec0d6..938f993ae746 100644 --- a/drivers/pwm/pwm-bcm2835.c +++ b/drivers/pwm/pwm-bcm2835.c @@ -182,6 +182,25 @@ static void bcm2835_pwm_remove(struct platform_device *pdev) clk_disable_unprepare(pc->clk); } +static int __maybe_unused bcm2835_pwm_suspend(struct device *dev) +{ + struct bcm2835_pwm *pc = dev_get_drvdata(dev); + + clk_disable_unprepare(pc->clk); + + return 0; +} + +static int __maybe_unused 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 */ } @@ -192,6 +211,7 @@ static struct platform_driver bcm2835_pwm_driver = { .driver = { .name = "bcm2835-pwm", .of_match_table = bcm2835_pwm_of_match, + .pm = &bcm2835_pwm_pm_ops, }, .probe = bcm2835_pwm_probe, .remove_new = bcm2835_pwm_remove, -- 2.34.1 [unhandled content-type:application/pkcs7-signature] | |