leds: lm355x: 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: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Daniel Jeong <daniel.jeong@ti.com>
Cc: G.Shark Jeong <gshark.jeong@gmail.com>
diff --git a/drivers/leds/leds-lm355x.c b/drivers/leds/leds-lm355x.c
index 48872997..6cb94f9 100644
--- a/drivers/leds/leds-lm355x.c
+++ b/drivers/leds/leds-lm355x.c
@@ -16,7 +16,6 @@
#include <linux/platform_device.h>
#include <linux/fs.h>
#include <linux/regmap.h>
-#include <linux/workqueue.h>
#include <linux/platform_data/leds-lm355x.h>
enum lm355x_type {
@@ -59,14 +58,6 @@
struct led_classdev cdev_torch;
struct led_classdev cdev_indicator;
- struct work_struct work_flash;
- struct work_struct work_torch;
- struct work_struct work_indicator;
-
- u8 br_flash;
- u8 br_torch;
- u8 br_indicator;
-
struct lm355x_platform_data *pdata;
struct regmap *regmap;
struct mutex lock;
@@ -204,7 +195,7 @@
}
/* chip control */
-static void lm355x_control(struct lm355x_chip_data *chip,
+static int lm355x_control(struct lm355x_chip_data *chip,
u8 brightness, enum lm355x_mode opmode)
{
int ret;
@@ -301,7 +292,7 @@
case MODE_SHDN:
break;
default:
- return;
+ return -EINVAL;
}
/* operation mode control */
ret = regmap_update_bits(chip->regmap, preg[REG_OPMODE].regno,
@@ -309,73 +300,55 @@
opmode << preg[REG_OPMODE].shift);
if (ret < 0)
goto out;
- return;
+ return ret;
out:
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
- return;
+ return ret;
}
/* torch */
-static void lm355x_deferred_torch_brightness_set(struct work_struct *work)
-{
- struct lm355x_chip_data *chip =
- container_of(work, struct lm355x_chip_data, work_torch);
- mutex_lock(&chip->lock);
- lm355x_control(chip, chip->br_torch, MODE_TORCH);
- mutex_unlock(&chip->lock);
-}
-
-static void lm355x_torch_brightness_set(struct led_classdev *cdev,
+static int lm355x_torch_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm355x_chip_data *chip =
container_of(cdev, struct lm355x_chip_data, cdev_torch);
+ int ret;
- chip->br_torch = brightness;
- schedule_work(&chip->work_torch);
+ mutex_lock(&chip->lock);
+ ret = lm355x_control(chip, brightness, MODE_TORCH);
+ mutex_unlock(&chip->lock);
+ return ret;
}
/* flash */
-static void lm355x_deferred_strobe_brightness_set(struct work_struct *work)
-{
- struct lm355x_chip_data *chip =
- container_of(work, struct lm355x_chip_data, work_flash);
- mutex_lock(&chip->lock);
- lm355x_control(chip, chip->br_flash, MODE_FLASH);
- mutex_unlock(&chip->lock);
-}
-
-static void lm355x_strobe_brightness_set(struct led_classdev *cdev,
+static int lm355x_strobe_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm355x_chip_data *chip =
container_of(cdev, struct lm355x_chip_data, cdev_flash);
+ int ret;
- chip->br_flash = brightness;
- schedule_work(&chip->work_flash);
+ mutex_lock(&chip->lock);
+ ret = lm355x_control(chip, brightness, MODE_FLASH);
+ mutex_unlock(&chip->lock);
+ return ret;
}
/* indicator */
-static void lm355x_deferred_indicator_brightness_set(struct work_struct *work)
-{
- struct lm355x_chip_data *chip =
- container_of(work, struct lm355x_chip_data, work_indicator);
- mutex_lock(&chip->lock);
- lm355x_control(chip, chip->br_indicator, MODE_INDIC);
- mutex_unlock(&chip->lock);
-}
-
-static void lm355x_indicator_brightness_set(struct led_classdev *cdev,
+static int lm355x_indicator_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lm355x_chip_data *chip =
container_of(cdev, struct lm355x_chip_data, cdev_indicator);
+ int ret;
- chip->br_indicator = brightness;
- schedule_work(&chip->work_indicator);
+ mutex_lock(&chip->lock);
+ ret = lm355x_control(chip, brightness, MODE_INDIC);
+ mutex_unlock(&chip->lock);
+ return ret;
}
/* indicator pattern only for lm3556*/
@@ -479,34 +452,31 @@
goto err_out;
/* flash */
- INIT_WORK(&chip->work_flash, lm355x_deferred_strobe_brightness_set);
chip->cdev_flash.name = "flash";
chip->cdev_flash.max_brightness = 16;
- chip->cdev_flash.brightness_set = lm355x_strobe_brightness_set;
+ chip->cdev_flash.brightness_set_blocking = lm355x_strobe_brightness_set;
chip->cdev_flash.default_trigger = "flash";
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_flash);
if (err < 0)
goto err_out;
/* torch */
- INIT_WORK(&chip->work_torch, lm355x_deferred_torch_brightness_set);
chip->cdev_torch.name = "torch";
chip->cdev_torch.max_brightness = 8;
- chip->cdev_torch.brightness_set = lm355x_torch_brightness_set;
+ chip->cdev_torch.brightness_set_blocking = lm355x_torch_brightness_set;
chip->cdev_torch.default_trigger = "torch";
err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_torch);
if (err < 0)
goto err_create_torch_file;
/* indicator */
- INIT_WORK(&chip->work_indicator,
- lm355x_deferred_indicator_brightness_set);
chip->cdev_indicator.name = "indicator";
if (id->driver_data == CHIP_LM3554)
chip->cdev_indicator.max_brightness = 4;
else
chip->cdev_indicator.max_brightness = 8;
- chip->cdev_indicator.brightness_set = lm355x_indicator_brightness_set;
+ chip->cdev_indicator.brightness_set_blocking =
+ lm355x_indicator_brightness_set;
/* indicator pattern control only for LM3556 */
if (id->driver_data == CHIP_LM3556)
chip->cdev_indicator.groups = lm355x_indicator_groups;
@@ -534,11 +504,8 @@
regmap_write(chip->regmap, preg[REG_OPMODE].regno, 0);
led_classdev_unregister(&chip->cdev_indicator);
- flush_work(&chip->work_indicator);
led_classdev_unregister(&chip->cdev_torch);
- flush_work(&chip->work_torch);
led_classdev_unregister(&chip->cdev_flash);
- flush_work(&chip->work_flash);
dev_info(&client->dev, "%s is removed\n", lm355x_name[chip->type]);
return 0;