leds: qcom-lpg: Make use of devm_pwmchip_alloc() function

This prepares the pwm sub-driver to further changes of the pwm core
outlined in the commit introducing devm_pwmchip_alloc(). There is no
intended semantical change and the driver should behave as before.

Acked-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/0be073477092eeccaac6c021cf07e38fc30c74fc.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

diff --git a/drivers/leds/rgb/leds-qcom-lpg.c b/drivers/leds/rgb/leds-qcom-lpg.c
index 156b73d1f4a29d459ccd1029c68f8797cfaa69bd..0a7acf59a4201511f599c00a58ad5cf79ca8e298 100644 (file)
--- a/drivers/leds/rgb/leds-qcom-lpg.c
+++ b/drivers/leds/rgb/leds-qcom-lpg.c
@@ -77,7 +77,7 @@ struct lpg {
 
        struct mutex lock;
 
-       struct pwm_chip pwm;
+       struct pwm_chip *pwm;
 
        const struct lpg_data *data;
 
@@ -978,7 +978,7 @@ static int lpg_pattern_mc_clear(struct led_classdev *cdev)
 
 static inline struct lpg *lpg_pwm_from_chip(struct pwm_chip *chip)
 {
-       return container_of(chip, struct lpg, pwm);
+       return pwmchip_get_drvdata(chip);
 }
 
 static int lpg_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
@@ -1093,13 +1093,17 @@ static const struct pwm_ops lpg_pwm_ops = {
 
 static int lpg_add_pwm(struct lpg *lpg)
 {
+       struct pwm_chip *chip;
        int ret;
 
-       lpg->pwm.dev = lpg->dev;
-       lpg->pwm.npwm = lpg->num_channels;
-       lpg->pwm.ops = &lpg_pwm_ops;
+       lpg->pwm = chip = devm_pwmchip_alloc(lpg->dev, lpg->num_channels, 0);
+       if (IS_ERR(chip))
+               return PTR_ERR(chip);
 
-       ret = devm_pwmchip_add(lpg->dev, &lpg->pwm);
+       chip->ops = &lpg_pwm_ops;
+       pwmchip_set_drvdata(chip, lpg);
+
+       ret = devm_pwmchip_add(lpg->dev, chip);
        if (ret)
                dev_err_probe(lpg->dev, ret, "failed to add PWM chip\n");