This patch adds suspend/resume support for Renesas PWM driver.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
---
drivers/pwm/pwm-rcar.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c
index b942010..f62045c 100644
--- a/drivers/pwm/pwm-rcar.c
+++ b/drivers/pwm/pwm-rcar.c
@@ -254,11 +254,38 @@ static int rcar_pwm_remove(struct platform_device *pdev)
};
MODULE_DEVICE_TABLE(of, rcar_pwm_of_table);
+#ifdef CONFIG_PM_SLEEP
+static int rcar_pwm_suspend(struct device *dev)
+{
+ pm_runtime_put(dev);
+
+ return 0;
+}
+
+static int rcar_pwm_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct rcar_pwm_chip *rcar_pwm = platform_get_drvdata(pdev);
+ struct pwm_chip *chip = &rcar_pwm->chip;
+ struct pwm_device *pwm = &chip->pwms[0];
+
+ pm_runtime_get_sync(dev);
+
+ rcar_pwm_config(chip, pwm, pwm->state.duty_cycle, pwm->state.period);
+ if (pwm_is_enabled(pwm))
+ rcar_pwm_enable(chip, pwm);
+
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+static SIMPLE_DEV_PM_OPS(rcar_pwm_pm_ops, rcar_pwm_suspend, rcar_pwm_resume);
+
static struct platform_driver rcar_pwm_driver = {
.probe = rcar_pwm_probe,
.remove = rcar_pwm_remove,
.driver = {
.name = "pwm-rcar",
+ .pm = &rcar_pwm_pm_ops,
.of_match_table = of_match_ptr(rcar_pwm_of_table),
}
};
--
1.9.1
