[PATCH v5 1/3] leds: pwm: Remove platform_data support

[Alexander Dahl]

Since commit 141f15c66d94 ("leds: pwm: remove header") that platform
interface is not usable from outside and there seems to be no in tree
user anymore.  All in-tree users of the leds-pwm driver seem to use DT
currently.  Getting rid of the old platform interface will allow the
leds-pwm driver to switch over from 'devm_led_classdev_register()' to
'devm_led_classdev_register_ext()' later.

Signed-off-by: Alexander Dahl <p...@lespocky.de>
Cc: Denis Osterland-Heim <denis.osterl...@diehl.com>
Cc: Marek Behún <marek.be...@nic.cz>
---

Notes:
    v5:
     * added this patch to series (replacing another patch with a not
       working, different approach)

 drivers/leds/leds-pwm.c | 30 +++++-------------------------
 1 file changed, 5 insertions(+), 25 deletions(-)

diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index e35a97c1d828..4e9954f8f7eb 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -25,11 +25,6 @@ struct led_pwm {
        unsigned int    max_brightness;
 };
 
-struct led_pwm_platform_data {
-       int             num_leds;
-       struct led_pwm  *leds;
-};
-
 struct led_pwm_data {
        struct led_classdev     cdev;
        struct pwm_device       *pwm;
@@ -61,6 +56,7 @@ static int led_pwm_set(struct led_classdev *led_cdev,
        return pwm_apply_state(led_dat->pwm, &led_dat->pwmstate);
 }
 
+__attribute__((nonnull))
 static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv,
                       struct led_pwm *led, struct fwnode_handle *fwnode)
 {
@@ -74,10 +70,7 @@ static int led_pwm_add(struct device *dev, struct 
led_pwm_priv *priv,
        led_data->cdev.max_brightness = led->max_brightness;
        led_data->cdev.flags = LED_CORE_SUSPENDRESUME;
 
-       if (fwnode)
-               led_data->pwm = devm_fwnode_pwm_get(dev, fwnode, NULL);
-       else
-               led_data->pwm = devm_pwm_get(dev, led->name);
+       led_data->pwm = devm_fwnode_pwm_get(dev, fwnode, NULL);
        if (IS_ERR(led_data->pwm))
                return dev_err_probe(dev, PTR_ERR(led_data->pwm),
                                     "unable to request PWM for %s\n",
@@ -143,15 +136,11 @@ static int led_pwm_create_fwnode(struct device *dev, 
struct led_pwm_priv *priv)
 
 static int led_pwm_probe(struct platform_device *pdev)
 {
-       struct led_pwm_platform_data *pdata = dev_get_platdata(&pdev->dev);
        struct led_pwm_priv *priv;
-       int count, i;
        int ret = 0;
+       int count;
 
-       if (pdata)
-               count = pdata->num_leds;
-       else
-               count = device_get_child_node_count(&pdev->dev);
+       count = device_get_child_node_count(&pdev->dev);
 
        if (!count)
                return -EINVAL;
@@ -161,16 +150,7 @@ static int led_pwm_probe(struct platform_device *pdev)
        if (!priv)
                return -ENOMEM;
 
-       if (pdata) {
-               for (i = 0; i < count; i++) {
-                       ret = led_pwm_add(&pdev->dev, priv, &pdata->leds[i],
-                                         NULL);
-                       if (ret)
-                               break;
-               }
-       } else {
-               ret = led_pwm_create_fwnode(&pdev->dev, priv);
-       }
+       ret = led_pwm_create_fwnode(&pdev->dev, priv);
 
        if (ret)
                return ret;
-- 
2.20.1