pwm: Add a device-managed function to add PWM chips
This potentially simplifies low-level PWM drivers.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index a42999f..83db178 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -335,6 +335,25 @@ int pwmchip_remove(struct pwm_chip *chip)
}
EXPORT_SYMBOL_GPL(pwmchip_remove);
+static void devm_pwmchip_remove(void *data)
+{
+ struct pwm_chip *chip = data;
+
+ pwmchip_remove(chip);
+}
+
+int devm_pwmchip_add(struct device *dev, struct pwm_chip *chip)
+{
+ int ret;
+
+ ret = pwmchip_add(chip);
+ if (ret)
+ return ret;
+
+ return devm_add_action_or_reset(dev, devm_pwmchip_remove, chip);
+}
+EXPORT_SYMBOL_GPL(devm_pwmchip_add);
+
/**
* pwm_request() - request a PWM device
* @pwm: global PWM device index