Update the driver to use the new API for requesting pwm so we can take
advantage of the pwm_lookup table to find the correct pwm to be used for the
LED functionality.
If the devm_get_pwm fails we fall back to legacy mode to try to get the pwm.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
---
drivers/leds/leds-pwm.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index f2e44c7..6bf9445 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -47,6 +47,19 @@ static void led_pwm_set(struct led_classdev *led_cdev,
}
}
+static struct pwm_device *led_pwm_request_pwm(struct platform_device *pdev,
+ struct led_pwm *cur_led)
+{
+ struct pwm_device *pwm;
+
+ pwm = devm_pwm_get(&pdev->dev, cur_led->name);
+ if (IS_ERR(pwm)) {
+ dev_err(&pdev->dev, "unable to request PWM, trying legacy API\n");
+ pwm = pwm_request(cur_led->pwm_id, cur_led->name);
+ }
+ return pwm;
+}
+
static int led_pwm_probe(struct platform_device *pdev)
{
struct led_pwm_platform_data *pdata = pdev->dev.platform_data;
@@ -67,8 +80,7 @@ static int led_pwm_probe(struct platform_device *pdev)
cur_led = &pdata->leds[i];
led_dat = &leds_data[i];
- led_dat->pwm = pwm_request(cur_led->pwm_id,
- cur_led->name);
+ led_dat->pwm = led_pwm_request_pwm(pdev, cur_led);
if (IS_ERR(led_dat->pwm)) {
ret = PTR_ERR(led_dat->pwm);
dev_err(&pdev->dev, "unable to request PWM %d\n",
--
1.8.0
--
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