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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>
This commit is contained in:
Jacek Anaszewski 2015-08-20 15:53:10 +02:00
parent 9aa0762579
commit df8ff5d2e0
1 changed files with 26 additions and 59 deletions
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85
drivers/leds/leds-lm355x.c
View File

@ -16,7 +16,6 @@
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/fs.h> #include <linux/fs.h>
#include <linux/regmap.h> #include <linux/regmap.h>
#include <linux/workqueue.h>
#include <linux/platform_data/leds-lm355x.h> #include <linux/platform_data/leds-lm355x.h>
enum lm355x_type { enum lm355x_type {
@ -59,14 +58,6 @@ struct lm355x_chip_data {
struct led_classdev cdev_torch; struct led_classdev cdev_torch;
struct led_classdev cdev_indicator; 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 lm355x_platform_data *pdata;
struct regmap *regmap; struct regmap *regmap;
struct mutex lock; struct mutex lock;
@ -204,7 +195,7 @@ out:
} }
/* chip control */ /* 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) u8 brightness, enum lm355x_mode opmode)
{ {
int ret; int ret;
@ -301,7 +292,7 @@ static void lm355x_control(struct lm355x_chip_data *chip,
case MODE_SHDN: case MODE_SHDN:
break; break;
default: default:
return; return -EINVAL;
} }
/* operation mode control */ /* operation mode control */
ret = regmap_update_bits(chip->regmap, preg[REG_OPMODE].regno, ret = regmap_update_bits(chip->regmap, preg[REG_OPMODE].regno,
@ -309,73 +300,55 @@ static void lm355x_control(struct lm355x_chip_data *chip,
opmode << preg[REG_OPMODE].shift); opmode << preg[REG_OPMODE].shift);
if (ret < 0) if (ret < 0)
goto out; goto out;
return; return ret;
out: out:
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__); dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return; return ret;
} }
/* torch */ /* 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); static int lm355x_torch_brightness_set(struct led_classdev *cdev,
lm355x_control(chip, chip->br_torch, MODE_TORCH);
mutex_unlock(&chip->lock);
}
static void lm355x_torch_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness) enum led_brightness brightness)
{ {
struct lm355x_chip_data *chip = struct lm355x_chip_data *chip =
container_of(cdev, struct lm355x_chip_data, cdev_torch); container_of(cdev, struct lm355x_chip_data, cdev_torch);
int ret;
chip->br_torch = brightness; mutex_lock(&chip->lock);
schedule_work(&chip->work_torch); ret = lm355x_control(chip, brightness, MODE_TORCH);
mutex_unlock(&chip->lock);
return ret;
} }
/* flash */ /* 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); static int lm355x_strobe_brightness_set(struct led_classdev *cdev,
lm355x_control(chip, chip->br_flash, MODE_FLASH);
mutex_unlock(&chip->lock);
}
static void lm355x_strobe_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness) enum led_brightness brightness)
{ {
struct lm355x_chip_data *chip = struct lm355x_chip_data *chip =
container_of(cdev, struct lm355x_chip_data, cdev_flash); container_of(cdev, struct lm355x_chip_data, cdev_flash);
int ret;
chip->br_flash = brightness; mutex_lock(&chip->lock);
schedule_work(&chip->work_flash); ret = lm355x_control(chip, brightness, MODE_FLASH);
mutex_unlock(&chip->lock);
return ret;
} }
/* indicator */ /* 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); static int lm355x_indicator_brightness_set(struct led_classdev *cdev,
lm355x_control(chip, chip->br_indicator, MODE_INDIC);
mutex_unlock(&chip->lock);
}
static void lm355x_indicator_brightness_set(struct led_classdev *cdev,
enum led_brightness brightness) enum led_brightness brightness)
{ {
struct lm355x_chip_data *chip = struct lm355x_chip_data *chip =
container_of(cdev, struct lm355x_chip_data, cdev_indicator); container_of(cdev, struct lm355x_chip_data, cdev_indicator);
int ret;
chip->br_indicator = brightness; mutex_lock(&chip->lock);
schedule_work(&chip->work_indicator); ret = lm355x_control(chip, brightness, MODE_INDIC);
mutex_unlock(&chip->lock);
return ret;
} }
/* indicator pattern only for lm3556*/ /* indicator pattern only for lm3556*/
@ -479,34 +452,31 @@ static int lm355x_probe(struct i2c_client *client,
goto err_out; goto err_out;
/* flash */ /* flash */
INIT_WORK(&chip->work_flash, lm355x_deferred_strobe_brightness_set);
chip->cdev_flash.name = "flash"; chip->cdev_flash.name = "flash";
chip->cdev_flash.max_brightness = 16; 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"; chip->cdev_flash.default_trigger = "flash";
err = led_classdev_register((struct device *) err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_flash); &client->dev, &chip->cdev_flash);
if (err < 0) if (err < 0)
goto err_out; goto err_out;
/* torch */ /* torch */
INIT_WORK(&chip->work_torch, lm355x_deferred_torch_brightness_set);
chip->cdev_torch.name = "torch"; chip->cdev_torch.name = "torch";
chip->cdev_torch.max_brightness = 8; 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"; chip->cdev_torch.default_trigger = "torch";
err = led_classdev_register((struct device *) err = led_classdev_register((struct device *)
&client->dev, &chip->cdev_torch); &client->dev, &chip->cdev_torch);
if (err < 0) if (err < 0)
goto err_create_torch_file; goto err_create_torch_file;
/* indicator */ /* indicator */
INIT_WORK(&chip->work_indicator,
lm355x_deferred_indicator_brightness_set);
chip->cdev_indicator.name = "indicator"; chip->cdev_indicator.name = "indicator";
if (id->driver_data == CHIP_LM3554) if (id->driver_data == CHIP_LM3554)
chip->cdev_indicator.max_brightness = 4; chip->cdev_indicator.max_brightness = 4;
else else
chip->cdev_indicator.max_brightness = 8; 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 */ /* indicator pattern control only for LM3556 */
if (id->driver_data == CHIP_LM3556) if (id->driver_data == CHIP_LM3556)
chip->cdev_indicator.groups = lm355x_indicator_groups; chip->cdev_indicator.groups = lm355x_indicator_groups;
@ -534,11 +504,8 @@ static int lm355x_remove(struct i2c_client *client)
regmap_write(chip->regmap, preg[REG_OPMODE].regno, 0); regmap_write(chip->regmap, preg[REG_OPMODE].regno, 0);
led_classdev_unregister(&chip->cdev_indicator); led_classdev_unregister(&chip->cdev_indicator);
flush_work(&chip->work_indicator);
led_classdev_unregister(&chip->cdev_torch); led_classdev_unregister(&chip->cdev_torch);
flush_work(&chip->work_torch);
led_classdev_unregister(&chip->cdev_flash); led_classdev_unregister(&chip->cdev_flash);
flush_work(&chip->work_flash);
dev_info(&client->dev, "%s is removed\n", lm355x_name[chip->type]); dev_info(&client->dev, "%s is removed\n", lm355x_name[chip->type]);
return 0; return 0;