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: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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 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 @@
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 @@
.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 @@
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 @@
/* 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 ed63427..9a2b000 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -47,7 +47,6 @@
#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 */