diff options
| author | Florian Fainelli <florian.fainelli@broadcom.com> | 2023-10-11 19:07:17 +0200 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2023-10-13 10:07:18 +0200 |
| commit | 119a508c4dc956c859854f40a504c577598b68a8 (patch) | |
| tree | 56b9b870dba09bdb313f5966cffcdddfee799afe /drivers/pwm | |
| parent | pwm: brcmstb: Checked clk_prepare_enable() return value (diff) | |
| download | linux-119a508c4dc956c859854f40a504c577598b68a8.tar.xz linux-119a508c4dc956c859854f40a504c577598b68a8.zip | |
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: Angus Clark <angus.clark@broadcom.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-bcm2835.c | 20 |
1 files changed, 20 insertions, 0 deletions
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, }; |