[PATCH/RFC,v12,01/19] leds: flash: Remove synchronized flash strobe feature

  Synchronized flash strobe feature has been considered not fitting
for LED subsystem sysfs interface and thus is being removed.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Bryan Wu <cooloney@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
---
 drivers/leds/led-class-flash.c  |   82 ---------------------------------------
 include/linux/led-class-flash.h |   14 -------
 include/linux/leds.h            |    1 -
 3 files changed, 97 deletions(-)
  

On Wed, Mar 4, 2015 at 8:14 AM, Jacek Anaszewski
<j.anaszewski@samsung.com> wrote:
> Synchronized flash strobe feature has been considered not fitting
> for LED subsystem sysfs interface and thus is being removed.
>

OK, I will merge this.

-Bryan


> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
> Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
> Cc: Bryan Wu <cooloney@gmail.com>
> Cc: Richard Purdie <rpurdie@rpsys.net>
> ---
>  drivers/leds/led-class-flash.c  |   82 ---------------------------------------
>  include/linux/led-class-flash.h |   14 -------
>  include/linux/leds.h            |    1 -
>  3 files changed, 97 deletions(-)
>
> diff --git a/drivers/leds/led-class-flash.c b/drivers/leds/led-class-flash.c
> index 4a19fd4..3b25734 100644
> --- a/drivers/leds/led-class-flash.c
> +++ b/drivers/leds/led-class-flash.c
> @@ -216,75 +216,6 @@ static ssize_t flash_fault_show(struct device *dev,
>  }
>  static DEVICE_ATTR_RO(flash_fault);
>
> -static ssize_t available_sync_leds_show(struct device *dev,
> -               struct device_attribute *attr, char *buf)
> -{
> -       struct led_classdev *led_cdev = dev_get_drvdata(dev);
> -       struct led_classdev_flash *fled_cdev = lcdev_to_flcdev(led_cdev);
> -       char *pbuf = buf;
> -       int i, buf_len;
> -
> -       buf_len = sprintf(pbuf, "[0: none] ");
> -       pbuf += buf_len;
> -
> -       for (i = 0; i < fled_cdev->num_sync_leds; ++i) {
> -               buf_len = sprintf(pbuf, "[%d: %s] ", i + 1,
> -                                 fled_cdev->sync_leds[i]->led_cdev.name);
> -               pbuf += buf_len;
> -       }
> -
> -       return sprintf(buf, "%s\n", buf);
> -}
> -static DEVICE_ATTR_RO(available_sync_leds);
> -
> -static ssize_t flash_sync_strobe_store(struct device *dev,
> -               struct device_attribute *attr, const char *buf, size_t size)
> -{
> -       struct led_classdev *led_cdev = dev_get_drvdata(dev);
> -       struct led_classdev_flash *fled_cdev = lcdev_to_flcdev(led_cdev);
> -       unsigned long led_id;
> -       ssize_t ret;
> -
> -       mutex_lock(&led_cdev->led_access);
> -
> -       if (led_sysfs_is_disabled(led_cdev)) {
> -               ret = -EBUSY;
> -               goto unlock;
> -       }
> -
> -       ret = kstrtoul(buf, 10, &led_id);
> -       if (ret)
> -               goto unlock;
> -
> -       if (led_id > fled_cdev->num_sync_leds) {
> -               ret = -ERANGE;
> -               goto unlock;
> -       }
> -
> -       fled_cdev->sync_led_id = led_id;
> -
> -       ret = size;
> -unlock:
> -       mutex_unlock(&led_cdev->led_access);
> -       return ret;
> -}
> -
> -static ssize_t flash_sync_strobe_show(struct device *dev,
> -               struct device_attribute *attr, char *buf)
> -{
> -       struct led_classdev *led_cdev = dev_get_drvdata(dev);
> -       struct led_classdev_flash *fled_cdev = lcdev_to_flcdev(led_cdev);
> -       int sled_id = fled_cdev->sync_led_id;
> -       char *sync_led_name = "none";
> -
> -       if (fled_cdev->sync_led_id > 0)
> -               sync_led_name = (char *)
> -                       fled_cdev->sync_leds[sled_id - 1]->led_cdev.name;
> -
> -       return sprintf(buf, "[%d: %s]\n", sled_id, sync_led_name);
> -}
> -static DEVICE_ATTR_RW(flash_sync_strobe);
> -
>  static struct attribute *led_flash_strobe_attrs[] = {
>         &dev_attr_flash_strobe.attr,
>         NULL,
> @@ -307,12 +238,6 @@ static struct attribute *led_flash_fault_attrs[] = {
>         NULL,
>  };
>
> -static struct attribute *led_flash_sync_strobe_attrs[] = {
> -       &dev_attr_available_sync_leds.attr,
> -       &dev_attr_flash_sync_strobe.attr,
> -       NULL,
> -};
> -
>  static const struct attribute_group led_flash_strobe_group = {
>         .attrs = led_flash_strobe_attrs,
>  };
> @@ -329,10 +254,6 @@ static const struct attribute_group led_flash_fault_group = {
>         .attrs = led_flash_fault_attrs,
>  };
>
> -static const struct attribute_group led_flash_sync_strobe_group = {
> -       .attrs = led_flash_sync_strobe_attrs,
> -};
> -
>  static void led_flash_resume(struct led_classdev *led_cdev)
>  {
>         struct led_classdev_flash *fled_cdev = lcdev_to_flcdev(led_cdev);
> @@ -361,9 +282,6 @@ static void led_flash_init_sysfs_groups(struct led_classdev_flash *fled_cdev)
>         if (ops->fault_get)
>                 flash_groups[num_sysfs_groups++] = &led_flash_fault_group;
>
> -       if (led_cdev->flags & LED_DEV_CAP_SYNC_STROBE)
> -               flash_groups[num_sysfs_groups++] = &led_flash_sync_strobe_group;
> -
>         led_cdev->groups = flash_groups;
>  }
>
> diff --git a/include/linux/led-class-flash.h b/include/linux/led-class-flash.h
> index 3b5b964..21ec91e 100644
> --- a/include/linux/led-class-flash.h
> +++ b/include/linux/led-class-flash.h
> @@ -81,20 +81,6 @@ struct led_classdev_flash {
>
>         /* LED Flash class sysfs groups */
>         const struct attribute_group *sysfs_groups[LED_FLASH_MAX_SYSFS_GROUPS];
> -
> -       /* LEDs available for flash strobe synchronization */
> -       struct led_classdev_flash **sync_leds;
> -
> -       /* Number of LEDs available for flash strobe synchronization */
> -       int num_sync_leds;
> -
> -       /*
> -        * The identifier of the sub-led to synchronize the flash strobe with.
> -        * Identifiers start from 1, which reflects the first element from the
> -        * sync_leds array. 0 means that the flash strobe should not be
> -        * synchronized.
> -        */
> -       u32 sync_led_id;
>  };
>
>  static inline struct led_classdev_flash *lcdev_to_flcdev(
> diff --git a/include/linux/leds.h b/include/linux/leds.h
> index f70f84f..351bba5 100644
> --- a/include/linux/leds.h
> +++ b/include/linux/leds.h
> @@ -47,7 +47,6 @@ struct led_classdev {
>  #define SET_BRIGHTNESS_ASYNC   (1 << 21)
>  #define SET_BRIGHTNESS_SYNC    (1 << 22)
>  #define LED_DEV_CAP_FLASH      (1 << 23)
> -#define LED_DEV_CAP_SYNC_STROBE        (1 << 24)
>
>         /* Set LED brightness level */
>         /* Must not sleep, use a workqueue if needed */
> --
> 1.7.9.5
>
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