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Subject[PATCH v4 1/7] leds: leds-pwm: Convert to use devm_get_pwm
Date
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.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/leds/leds-pwm.c | 19 ++++++-------------
include/linux/leds_pwm.h | 2 +-
2 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index 2157524..351257c 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -67,12 +67,11 @@ 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 = devm_pwm_get(&pdev->dev, cur_led->name);
if (IS_ERR(led_dat->pwm)) {
ret = PTR_ERR(led_dat->pwm);
- dev_err(&pdev->dev, "unable to request PWM %d\n",
- cur_led->pwm_id);
+ dev_err(&pdev->dev, "unable to request PWM for %s\n",
+ cur_led->name);
goto err;
}

@@ -86,10 +85,8 @@ static int led_pwm_probe(struct platform_device *pdev)
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;

ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
- if (ret < 0) {
- pwm_free(led_dat->pwm);
+ if (ret < 0)
goto err;
- }
}

platform_set_drvdata(pdev, leds_data);
@@ -98,10 +95,8 @@ static int led_pwm_probe(struct platform_device *pdev)

err:
if (i > 0) {
- for (i = i - 1; i >= 0; i--) {
+ for (i = i - 1; i >= 0; i--)
led_classdev_unregister(&leds_data[i].cdev);
- pwm_free(leds_data[i].pwm);
- }
}

return ret;
@@ -115,10 +110,8 @@ static int led_pwm_remove(struct platform_device *pdev)

leds_data = platform_get_drvdata(pdev);

- for (i = 0; i < pdata->num_leds; i++) {
+ for (i = 0; i < pdata->num_leds; i++)
led_classdev_unregister(&leds_data[i].cdev);
- pwm_free(leds_data[i].pwm);
- }

return 0;
}
diff --git a/include/linux/leds_pwm.h b/include/linux/leds_pwm.h
index 33a0711..a65e964 100644
--- a/include/linux/leds_pwm.h
+++ b/include/linux/leds_pwm.h
@@ -7,7 +7,7 @@
struct led_pwm {
const char *name;
const char *default_trigger;
- unsigned pwm_id;
+ unsigned pwm_id __deprecated;
u8 active_low;
unsigned max_brightness;
unsigned pwm_period_ns;
--
1.8.0


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