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author | Jacek Anaszewski <j.anaszewski@samsung.com> | 2015-08-20 15:53:10 +0200 |
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committer | Jacek Anaszewski <j.anaszewski@samsung.com> | 2016-01-04 09:57:36 +0100 |
commit | df8ff5d2e0f733aa6e866a6ba11a4c3376bb47f7 (patch) | |
tree | b8e3831015b0bff76835b01d7ca647428700aa5b /drivers/leds | |
parent | 9aa0762579df4f8f6259b7cd23a8540d00a970bf (diff) | |
download | linux-df8ff5d2e0f733aa6e866a6ba11a4c3376bb47f7.tar.gz linux-df8ff5d2e0f733aa6e866a6ba11a4c3376bb47f7.tar.bz2 linux-df8ff5d2e0f733aa6e866a6ba11a4c3376bb47f7.zip |
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>
Diffstat (limited to 'drivers/leds')
-rw-r--r-- | drivers/leds/leds-lm355x.c | 85 |
1 files changed, 26 insertions, 59 deletions
diff --git a/drivers/leds/leds-lm355x.c b/drivers/leds/leds-lm355x.c index 48872997d6b4..6cb94f9a2f3f 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 lm355x_chip_data { 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 @@ out: } /* 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 @@ static void lm355x_control(struct lm355x_chip_data *chip, 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 @@ static void lm355x_control(struct lm355x_chip_data *chip, 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); - - chip->br_torch = brightness; - schedule_work(&chip->work_torch); -} - -/* 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); + int ret; mutex_lock(&chip->lock); - lm355x_control(chip, chip->br_flash, MODE_FLASH); + ret = lm355x_control(chip, brightness, MODE_TORCH); mutex_unlock(&chip->lock); + return ret; } -static void lm355x_strobe_brightness_set(struct led_classdev *cdev, +/* flash */ + +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); - - chip->br_flash = brightness; - schedule_work(&chip->work_flash); -} - -/* 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); + int ret; mutex_lock(&chip->lock); - lm355x_control(chip, chip->br_indicator, MODE_INDIC); + ret = lm355x_control(chip, brightness, MODE_FLASH); mutex_unlock(&chip->lock); + return ret; } -static void lm355x_indicator_brightness_set(struct led_classdev *cdev, +/* indicator */ + +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 @@ static int lm355x_probe(struct i2c_client *client, 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 @@ static int lm355x_remove(struct i2c_client *client) 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; |