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authorAndrew Lunn <andrew@lunn.ch>2015-08-20 13:50:05 +0300
committerJacek Anaszewski <j.anaszewski@samsung.com>2016-01-04 11:57:34 +0300
commita0011f1be78aec408803728359a7a181baa167bb (patch)
treec42ce1430bbfceee57bf4c7aae14aa4b0bf468f0 /drivers/leds
parent8ec108c03e3820d0fe0956204feea588ce2d3dbc (diff)
downloadlinux-a0011f1be78aec408803728359a7a181baa167bb.tar.xz
leds: lt3593: Remove work queue
Now the core implements the work queue, remove it from the drivers, and switch to using brightness_set_blocking op. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Cc: Daniel Mack <daniel@caiaq.de> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/leds-lt3593.c33
1 files changed, 10 insertions, 23 deletions
diff --git a/drivers/leds/leds-lt3593.c b/drivers/leds/leds-lt3593.c
index 9f41124765cc..a7ff510cbdd0 100644
--- a/drivers/leds/leds-lt3593.c
+++ b/drivers/leds/leds-lt3593.c
@@ -19,7 +19,6 @@
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
-#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/slab.h>
@@ -28,15 +27,14 @@
struct lt3593_led_data {
struct led_classdev cdev;
unsigned gpio;
- struct work_struct work;
- u8 new_level;
};
-static void lt3593_led_work(struct work_struct *work)
+static int lt3593_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
{
- int pulses;
struct lt3593_led_data *led_dat =
- container_of(work, struct lt3593_led_data, work);
+ container_of(led_cdev, struct lt3593_led_data, cdev);
+ int pulses;
/*
* The LT3593 resets its internal current level register to the maximum
@@ -47,18 +45,18 @@ static void lt3593_led_work(struct work_struct *work)
* applied is to the output driver.
*/
- if (led_dat->new_level == 0) {
+ if (value == 0) {
gpio_set_value_cansleep(led_dat->gpio, 0);
- return;
+ return 0;
}
- pulses = 32 - (led_dat->new_level * 32) / 255;
+ pulses = 32 - (value * 32) / 255;
if (pulses == 0) {
gpio_set_value_cansleep(led_dat->gpio, 0);
mdelay(1);
gpio_set_value_cansleep(led_dat->gpio, 1);
- return;
+ return 0;
}
gpio_set_value_cansleep(led_dat->gpio, 1);
@@ -69,16 +67,8 @@ static void lt3593_led_work(struct work_struct *work)
gpio_set_value_cansleep(led_dat->gpio, 1);
udelay(1);
}
-}
-static void lt3593_led_set(struct led_classdev *led_cdev,
- enum led_brightness value)
-{
- struct lt3593_led_data *led_dat =
- container_of(led_cdev, struct lt3593_led_data, cdev);
-
- led_dat->new_level = value;
- schedule_work(&led_dat->work);
+ return 0;
}
static int create_lt3593_led(const struct gpio_led *template,
@@ -97,7 +87,7 @@ static int create_lt3593_led(const struct gpio_led *template,
led_dat->cdev.default_trigger = template->default_trigger;
led_dat->gpio = template->gpio;
- led_dat->cdev.brightness_set = lt3593_led_set;
+ led_dat->cdev.brightness_set_blocking = lt3593_led_set;
state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
@@ -111,8 +101,6 @@ static int create_lt3593_led(const struct gpio_led *template,
if (ret < 0)
return ret;
- INIT_WORK(&led_dat->work, lt3593_led_work);
-
ret = led_classdev_register(parent, &led_dat->cdev);
if (ret < 0)
return ret;
@@ -129,7 +117,6 @@ static void delete_lt3593_led(struct lt3593_led_data *led)
return;
led_classdev_unregister(&led->cdev);
- cancel_work_sync(&led->work);
}
static int lt3593_led_probe(struct platform_device *pdev)