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Commit 2dbfca5a authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds 

Pull LED subsystem update from Bryan Wu:
 "We got some cleanup and driver for LP8860 as well as some patches for
  LED Flash Class"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
  leds: lp8860: Fix module dependency
  leds: lp8860: Introduce TI lp8860 4 channel LED driver
  leds: Add support for setting brightness in a synchronous way
  leds: implement sysfs interface locking mechanism
  leds: syscon: handle multiple syscon instances
  leds: delete copy/paste mistake
  leds: regulator: Convert to devm_regulator_get_exclusive
parents dab363f9 2969bb18

Documentation/devicetree/bindings/leds/leds-lp8860.txt

0 → 100644
+29 −0
Original line number Diff line number Diff line 
* Texas Instruments - lp8860 4-Channel LED Driver



The LP8860-Q1 is an high-efficiency LED

driver with boost controller. It has 4 high-precision

current sinks that can be controlled by a PWM input

signal, a SPI/I2C master, or both.



Required properties:

	- compatible:

		"ti,lp8860"

	- reg -  I2C slave address

	- label - Used for naming LEDs



Optional properties:

	- enable-gpio - gpio pin to enable/disable the device.

	- supply - "vled" - LED supply



Example:



leds: leds@6 {

	compatible = "ti,lp8860";

	reg = <0x2d>;

	label = "display_cluster";

	enable-gpio = <&gpio1 28 GPIO_ACTIVE_HIGH>;

	vled-supply = <&vbatt>;

}



For more product information please see the link below:

http://www.ti.com/product/lp8860-q1

drivers/leds/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -250,6 +250,17 @@ config LEDS_LP8788 
	help

	  This option enables support for the Keyboard LEDs on the LP8788 PMIC.



config LEDS_LP8860

	tristate "LED support for the TI LP8860 4 channel LED driver"

	depends on LEDS_CLASS && I2C

	select REGMAP_I2C

	help

	  If you say yes here you get support for the TI LP8860 4 channel

	  LED driver.

	  This option enables support for the display cluster LEDs

	  on the LP8860 4 channel LED driver using the I2C communication

	  bus.



config LEDS_CLEVO_MAIL

	tristate "Mail LED on Clevo notebook"

	depends on LEDS_CLASS

drivers/leds/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ obj-$(CONFIG_LEDS_LP5523) += leds-lp5523.o 
obj-$(CONFIG_LEDS_LP5562)		+= leds-lp5562.o

obj-$(CONFIG_LEDS_LP8501)		+= leds-lp8501.o

obj-$(CONFIG_LEDS_LP8788)		+= leds-lp8788.o

obj-$(CONFIG_LEDS_LP8860)		+= leds-lp8860.o

obj-$(CONFIG_LEDS_TCA6507)		+= leds-tca6507.o

obj-$(CONFIG_LEDS_CLEVO_MAIL)		+= leds-clevo-mail.o

obj-$(CONFIG_LEDS_IPAQ_MICRO)		+= leds-ipaq-micro.o

drivers/leds/led-class.c

+22 −7
Original line number Diff line number Diff line
@@ -40,17 +40,27 @@ static ssize_t brightness_store(struct device *dev, 
{

	struct led_classdev *led_cdev = dev_get_drvdata(dev);

	unsigned long state;

	ssize_t ret = -EINVAL;

	ssize_t ret;



	mutex_lock(&led_cdev->led_access);



	if (led_sysfs_is_disabled(led_cdev)) {

		ret = -EBUSY;

		goto unlock;

	}



	ret = kstrtoul(buf, 10, &state);

	if (ret)

		return ret;

		goto unlock;



	if (state == LED_OFF)

		led_trigger_remove(led_cdev);

	__led_set_brightness(led_cdev, state);

	led_set_brightness(led_cdev, state);



	return size;

	ret = size;

unlock:

	mutex_unlock(&led_cdev->led_access);

	return ret;

}

static DEVICE_ATTR_RW(brightness);
@@ -99,7 +109,7 @@ static void led_timer_function(unsigned long data) 
	unsigned long delay;



	if (!led_cdev->blink_delay_on || !led_cdev->blink_delay_off) {

		__led_set_brightness(led_cdev, LED_OFF);

		led_set_brightness_async(led_cdev, LED_OFF);

		return;

	}
@@ -122,7 +132,7 @@ static void led_timer_function(unsigned long data) 
		delay = led_cdev->blink_delay_off;

	}



	__led_set_brightness(led_cdev, brightness);

	led_set_brightness_async(led_cdev, brightness);



	/* Return in next iteration if led is in one-shot mode and we are in

	 * the final blink state so that the led is toggled each delay_on +
@@ -148,7 +158,7 @@ static void set_brightness_delayed(struct work_struct *ws) 


	led_stop_software_blink(led_cdev);



	__led_set_brightness(led_cdev, led_cdev->delayed_set_value);

	led_set_brightness_async(led_cdev, led_cdev->delayed_set_value);

}



/**
@@ -214,6 +224,7 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) 
#ifdef CONFIG_LEDS_TRIGGERS

	init_rwsem(&led_cdev->trigger_lock);

#endif

	mutex_init(&led_cdev->led_access);

	/* add to the list of leds */

	down_write(&leds_list_lock);

	list_add_tail(&led_cdev->node, &leds_list);
@@ -222,6 +233,8 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) 
	if (!led_cdev->max_brightness)

		led_cdev->max_brightness = LED_FULL;



	led_cdev->flags |= SET_BRIGHTNESS_ASYNC;



	led_update_brightness(led_cdev);



	INIT_WORK(&led_cdev->set_brightness_work, set_brightness_delayed);
@@ -267,6 +280,8 @@ void led_classdev_unregister(struct led_classdev *led_cdev) 
	down_write(&leds_list_lock);

	list_del(&led_cdev->node);

	up_write(&leds_list_lock);



	mutex_destroy(&led_cdev->led_access);

}

EXPORT_SYMBOL_GPL(led_classdev_unregister);

drivers/leds/led-core.c

+33 −3
Original line number Diff line number Diff line
@@ -42,13 +42,13 @@ static void led_set_software_blink(struct led_classdev *led_cdev, 


	/* never on - just set to off */

	if (!delay_on) {

		__led_set_brightness(led_cdev, LED_OFF);

		led_set_brightness_async(led_cdev, LED_OFF);

		return;

	}



	/* never off - just set to brightness */

	if (!delay_off) {

		__led_set_brightness(led_cdev, led_cdev->blink_brightness);

		led_set_brightness_async(led_cdev, led_cdev->blink_brightness);

		return;

	}
@@ -117,6 +117,8 @@ EXPORT_SYMBOL_GPL(led_stop_software_blink); 
void led_set_brightness(struct led_classdev *led_cdev,

			enum led_brightness brightness)

{

	int ret = 0;



	/* delay brightness setting if need to stop soft-blink timer */

	if (led_cdev->blink_delay_on || led_cdev->blink_delay_off) {

		led_cdev->delayed_set_value = brightness;
@@ -124,7 +126,17 @@ void led_set_brightness(struct led_classdev *led_cdev, 
		return;

	}



	__led_set_brightness(led_cdev, brightness);

	if (led_cdev->flags & SET_BRIGHTNESS_ASYNC) {

		led_set_brightness_async(led_cdev, brightness);

		return;

	} else if (led_cdev->flags & SET_BRIGHTNESS_SYNC)

		ret = led_set_brightness_sync(led_cdev, brightness);

	else

		ret = -EINVAL;



	if (ret < 0)

		dev_dbg(led_cdev->dev, "Setting LED brightness failed (%d)\n",

			ret);

}

EXPORT_SYMBOL(led_set_brightness);
@@ -143,3 +155,21 @@ int led_update_brightness(struct led_classdev *led_cdev) 
	return ret;

}

EXPORT_SYMBOL(led_update_brightness);



/* Caller must ensure led_cdev->led_access held */

void led_sysfs_disable(struct led_classdev *led_cdev)

{

	lockdep_assert_held(&led_cdev->led_access);



	led_cdev->flags |= LED_SYSFS_DISABLE;

}

EXPORT_SYMBOL_GPL(led_sysfs_disable);



/* Caller must ensure led_cdev->led_access held */

void led_sysfs_enable(struct led_classdev *led_cdev)

{

	lockdep_assert_held(&led_cdev->led_access);



	led_cdev->flags &= ~LED_SYSFS_DISABLE;

}

EXPORT_SYMBOL_GPL(led_sysfs_enable);