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Commit 9aa07625 authored by Jacek Anaszewski's avatar Jacek Anaszewski
Browse files

leds: pwm: 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: default avatarJacek Anaszewski <j.anaszewski@samsung.com>
Cc: Raphael Assenat <raph@8d.com>
parent d5b8a090

drivers/leds/leds-pwm.c

+13 −21
Original line number Diff line number Diff line
@@ -22,12 +22,10 @@ 
#include <linux/pwm.h>

#include <linux/leds_pwm.h>

#include <linux/slab.h>

#include <linux/workqueue.h>



struct led_pwm_data {

	struct led_classdev	cdev;

	struct pwm_device	*pwm;

	struct work_struct	work;

	unsigned int		active_low;

	unsigned int		period;

	int			duty;
@@ -51,14 +49,6 @@ static void __led_pwm_set(struct led_pwm_data *led_dat) 
		pwm_enable(led_dat->pwm);

}



static void led_pwm_work(struct work_struct *work)

{

	struct led_pwm_data *led_dat =

		container_of(work, struct led_pwm_data, work);



	__led_pwm_set(led_dat);

}



static void led_pwm_set(struct led_classdev *led_cdev,

	enum led_brightness brightness)

{
@@ -75,12 +65,16 @@ static void led_pwm_set(struct led_classdev *led_cdev, 


	led_dat->duty = duty;



	if (led_dat->can_sleep)

		schedule_work(&led_dat->work);

	else

	__led_pwm_set(led_dat);

}



static int led_pwm_set_blocking(struct led_classdev *led_cdev,

	enum led_brightness brightness)

{

	led_pwm_set(led_cdev, brightness);

	return 0;

}



static inline size_t sizeof_pwm_leds_priv(int num_leds)

{

	return sizeof(struct led_pwm_priv) +
@@ -89,11 +83,8 @@ static inline size_t sizeof_pwm_leds_priv(int num_leds) 


static void led_pwm_cleanup(struct led_pwm_priv *priv)

{

	while (priv->num_leds--) {

	while (priv->num_leds--)

		led_classdev_unregister(&priv->leds[priv->num_leds].cdev);

		if (priv->leds[priv->num_leds].can_sleep)

			cancel_work_sync(&priv->leds[priv->num_leds].work);

	}

}



static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv,
@@ -105,7 +96,6 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, 
	led_data->active_low = led->active_low;

	led_data->cdev.name = led->name;

	led_data->cdev.default_trigger = led->default_trigger;

	led_data->cdev.brightness_set = led_pwm_set;

	led_data->cdev.brightness = LED_OFF;

	led_data->cdev.max_brightness = led->max_brightness;

	led_data->cdev.flags = LED_CORE_SUSPENDRESUME;
@@ -122,8 +112,10 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, 
	}



	led_data->can_sleep = pwm_can_sleep(led_data->pwm);

	if (led_data->can_sleep)

		INIT_WORK(&led_data->work, led_pwm_work);

	if (!led_data->can_sleep)

		led_data->cdev.brightness_set = led_pwm_set;

	else

		led_data->cdev.brightness_set_blocking = led_pwm_set_blocking;



	led_data->period = pwm_get_period(led_data->pwm);

	if (!led_data->period && (led->pwm_period_ns > 0))