Merge tag 'leds-for-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Merge commit. Changes below are compared with the first parent: 4d88e3d2.
Changes
28 files changed · +641 −619
Only the first 600 diff lines are shown. Download the complete patch.
Documentation/devicetree/bindings/leds/common.txt
View filediff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
index 1d4afe9..aa13998 100644
--- a/Documentation/devicetree/bindings/leds/common.txt
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -31,7 +31,7 @@ Optional properties for child nodes:
"backlight" - LED will act as a back-light, controlled by the framebuffer
system
"default-on" - LED will turn on (but for leds-gpio see "default-state"
- property in Documentation/devicetree/bindings/gpio/led.txt)
+ property in Documentation/devicetree/bindings/leds/leds-gpio.txt)
"heartbeat" - LED "double" flashes at a load average based rate
"disk-activity" - LED indicates disk activity
"ide-disk" - LED indicates IDE disk activity (deprecated),
Documentation/devicetree/bindings/leds/leds-lm3692x.txt
View filediff --git a/Documentation/devicetree/bindings/leds/leds-lm3692x.txt b/Documentation/devicetree/bindings/leds/leds-lm3692x.txt
index 6c9074f..08b3528 100644
--- a/Documentation/devicetree/bindings/leds/leds-lm3692x.txt
+++ b/Documentation/devicetree/bindings/leds/leds-lm3692x.txt
@@ -20,7 +20,10 @@ Optional properties:
- vled-supply : LED supply
Required child properties:
- - reg : 0
+ - reg : 0 - Will enable all LED sync paths
+ 1 - Will enable the LED1 sync
+ 2 - Will enable the LED2 sync
+ 3 - Will enable the LED3 sync (LM36923 only)
Optional child properties:
- label : see Documentation/devicetree/bindings/leds/common.txt
Documentation/devicetree/bindings/leds/leds-lt3593.txt
View filediff --git a/Documentation/devicetree/bindings/leds/leds-lt3593.txt b/Documentation/devicetree/bindings/leds/leds-lt3593.txt
new file mode 100644
index 0000000..6b2cabc
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-lt3593.txt
@@ -0,0 +1,32 @@
+Bindings for Linear Technologies LT3593 LED controller
+
+Required properties:
+- compatible: Should be "lltc,lt3593".
+- lltc,ctrl-gpios: A handle to the GPIO that is connected to the 'CTRL'
+ pin of the chip.
+
+The hardware supports only one LED. The properties of this LED are
+configured in a sub-node in the device node.
+
+Optional sub-node properties:
+- label: A label for the LED. If none is given, the LED will be
+ named "lt3595::".
+- linux,default-trigger: The default trigger for the LED.
+ See Documentation/devicetree/bindings/leds/common.txt
+- default-state: The initial state of the LED.
+ See Documentation/devicetree/bindings/leds/common.txt
+
+If multiple chips of this type are found in a design, each one needs to
+be handled by its own device node.
+
+Example:
+
+led-controller {
+ compatible = "lltc,lt3593";
+ lltc,ctrl-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+
+ led {
+ label = "white:backlight";
+ default-state = "on";
+ };
+};
drivers/leds/Kconfig
View filediff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 6e3a998..44097a3 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -57,12 +57,13 @@ config LEDS_AAT1290
depends on PINCTRL
help
This option enables support for the LEDs on the AAT1290.
+
config LEDS_APU
- tristate "Front panel LED support for PC Engines APU/APU2 boards"
+ tristate "Front panel LED support for PC Engines APU/APU2/APU3 boards"
depends on LEDS_CLASS
depends on X86 && DMI
help
- This driver makes the PC Engines APU/APU2 front panel LEDs
+ This driver makes the PC Engines APU/APU2/APU3 front panel LEDs
accessible from userspace programs through the LED subsystem.
To compile this driver as a module, choose M here: the
drivers/leds/led-triggers.c
View filediff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 431123b..17d73db 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -103,15 +103,16 @@ ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
EXPORT_SYMBOL_GPL(led_trigger_show);
/* Caller must ensure led_cdev->trigger_lock held */
-void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
+int led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
{
unsigned long flags;
char *event = NULL;
char *envp[2];
const char *name;
+ int ret;
if (!led_cdev->trigger && !trig)
- return;
+ return 0;
name = trig ? trig->name : "none";
event = kasprintf(GFP_KERNEL, "TRIGGER=%s", name);
@@ -126,7 +127,10 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
led_stop_software_blink(led_cdev);
if (led_cdev->trigger->deactivate)
led_cdev->trigger->deactivate(led_cdev);
+ device_remove_groups(led_cdev->dev, led_cdev->trigger->groups);
led_cdev->trigger = NULL;
+ led_cdev->trigger_data = NULL;
+ led_cdev->activated = false;
led_set_brightness(led_cdev, LED_OFF);
}
if (trig) {
@@ -134,8 +138,20 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
list_add_tail(&led_cdev->trig_list, &trig->led_cdevs);
write_unlock_irqrestore(&trig->leddev_list_lock, flags);
led_cdev->trigger = trig;
+
if (trig->activate)
- trig->activate(led_cdev);
+ ret = trig->activate(led_cdev);
+ else
+ ret = 0;
+
+ if (ret)
+ goto err_activate;
+
+ ret = device_add_groups(led_cdev->dev, trig->groups);
+ if (ret) {
+ dev_err(led_cdev->dev, "Failed to add trigger attributes\n");
+ goto err_add_groups;
+ }
}
if (event) {
@@ -146,6 +162,23 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
"%s: Error sending uevent\n", __func__);
kfree(event);
}
+
+ return 0;
+
+err_add_groups:
+
+ if (trig->deactivate)
+ trig->deactivate(led_cdev);
+err_activate:
+
+ led_cdev->trigger = NULL;
+ led_cdev->trigger_data = NULL;
+ write_lock_irqsave(&led_cdev->trigger->leddev_list_lock, flags);
+ list_del(&led_cdev->trig_list);
+ write_unlock_irqrestore(&led_cdev->trigger->leddev_list_lock, flags);
+ led_set_brightness(led_cdev, LED_OFF);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(led_trigger_set);
drivers/leds/leds-apu.c
View filediff --git a/drivers/leds/leds-apu.c b/drivers/leds/leds-apu.c
index 8c93d68..8d42e46 100644
--- a/drivers/leds/leds-apu.c
+++ b/drivers/leds/leds-apu.c
@@ -102,6 +102,13 @@ static const struct apu_led_profile apu2_led_profile[] = {
{ "apu2:green:3", LED_OFF, APU2_FCH_GPIO_BASE + 70 * APU2_IOSIZE },
};
+/* Same as apu2_led_profile, but with "3" in the LED names. */
+static const struct apu_led_profile apu3_led_profile[] = {
+ { "apu3:green:1", LED_ON, APU2_FCH_GPIO_BASE + 68 * APU2_IOSIZE },
+ { "apu3:green:2", LED_OFF, APU2_FCH_GPIO_BASE + 69 * APU2_IOSIZE },
+ { "apu3:green:3", LED_OFF, APU2_FCH_GPIO_BASE + 70 * APU2_IOSIZE },
+};
+
static const struct dmi_system_id apu_led_dmi_table[] __initconst = {
{
.ident = "apu",
@@ -134,6 +141,30 @@ static const struct dmi_system_id apu_led_dmi_table[] __initconst = {
DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu2")
}
},
+ /* PC Engines APU3 with "Legacy" bios < 4.0.8 */
+ {
+ .ident = "apu3",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
+ DMI_MATCH(DMI_BOARD_NAME, "APU3")
+ }
+ },
+ /* PC Engines APU3 with "Legacy" bios >= 4.0.8 */
+ {
+ .ident = "apu3",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
+ DMI_MATCH(DMI_BOARD_NAME, "apu3")
+ }
+ },
+ /* PC Engines APU2 with "Mainline" bios */
+ {
+ .ident = "apu3",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
+ DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu3")
+ }
+ },
{}
};
MODULE_DEVICE_TABLE(dmi, apu_led_dmi_table);
@@ -235,6 +266,14 @@ static int __init apu_led_probe(struct platform_device *pdev)
apu_led->platform = APU2_LED_PLATFORM;
apu_led->num_led_instances = ARRAY_SIZE(apu2_led_profile);
apu_led->iosize = APU2_IOSIZE;
+ } else if (dmi_match(DMI_BOARD_NAME, "APU3") ||
+ dmi_match(DMI_BOARD_NAME, "apu3") ||
+ dmi_match(DMI_BOARD_NAME, "PC Engines apu3")) {
+ apu_led->profile = apu3_led_profile;
+ /* Otherwise identical to APU2. */
+ apu_led->platform = APU2_LED_PLATFORM;
+ apu_led->num_led_instances = ARRAY_SIZE(apu3_led_profile);
+ apu_led->iosize = APU2_IOSIZE;
}
spin_lock_init(&apu_led->lock);
@@ -259,7 +298,10 @@ static int __init apu_led_init(void)
if (!(dmi_match(DMI_PRODUCT_NAME, "APU") ||
dmi_match(DMI_PRODUCT_NAME, "APU2") ||
dmi_match(DMI_PRODUCT_NAME, "apu2") ||
- dmi_match(DMI_PRODUCT_NAME, "PC Engines apu2"))) {
+ dmi_match(DMI_PRODUCT_NAME, "PC Engines apu2") ||
+ dmi_match(DMI_PRODUCT_NAME, "APU3") ||
+ dmi_match(DMI_PRODUCT_NAME, "apu3") ||
+ dmi_match(DMI_PRODUCT_NAME, "PC Engines apu3"))) {
pr_err("Unknown PC Engines board: %s\n",
dmi_get_system_info(DMI_PRODUCT_NAME));
return -ENODEV;
drivers/leds/leds-lm3692x.c
View filediff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
index 437173d..4f413a7 100644
--- a/drivers/leds/leds-lm3692x.c
+++ b/drivers/leds/leds-lm3692x.c
@@ -1,17 +1,6 @@
-/*
- * TI lm3692x LED Driver
- *
- * Copyright (C) 2017 Texas Instruments
- *
- * Author: Dan Murphy <[email protected]>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * Data sheet is located
- * http://www.ti.com/lit/ds/snvsa29/snvsa29.pdf
- */
+// SPDX-License-Identifier: GPL-2.0
+// TI LM3692x LED chip family driver
+// Copyright (C) 2017-18 Texas Instruments Incorporated - http://www.ti.com/
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
@@ -26,6 +15,9 @@
#include <linux/slab.h>
#include <uapi/linux/uleds.h>
+#define LM36922_MODEL 0
+#define LM36923_MODEL 1
+
#define LM3692X_REV 0x0
#define LM3692X_RESET 0x1
#define LM3692X_EN 0x10
@@ -44,6 +36,9 @@
#define LM3692X_DEVICE_EN BIT(0)
#define LM3692X_LED1_EN BIT(1)
#define LM3692X_LED2_EN BIT(2)
+#define LM36923_LED3_EN BIT(3)
+#define LM3692X_ENABLE_MASK (LM3692X_DEVICE_EN | LM3692X_LED1_EN | \
+ LM3692X_LED2_EN | LM36923_LED3_EN)
/* Brightness Control Bits */
#define LM3692X_BL_ADJ_POL BIT(0)
@@ -109,6 +104,8 @@
* @enable_gpio - VDDIO/EN gpio to enable communication interface
* @regulator - LED supply regulator pointer
* @label - LED label
+ * @led_enable - LED sync to be enabled
+ * @model_id - Current device model ID enumerated
*/
struct lm3692x_led {
struct mutex lock;
@@ -118,6 +115,8 @@ struct lm3692x_led {
struct gpio_desc *enable_gpio;
struct regulator *regulator;
char label[LED_MAX_NAME_SIZE];
+ int led_enable;
+ int model_id;
};
static const struct reg_default lm3692x_reg_defs[] = {
@@ -200,6 +199,7 @@ out:
static int lm3692x_init(struct lm3692x_led *led)
{
+ int enable_state;
int ret;
if (led->regulator) {
@@ -226,9 +226,25 @@ static int lm3692x_init(struct lm3692x_led *led)
/*
* For glitch free operation, the following data should
- * only be written while device enable bit is 0
+ * only be written while LEDx enable bits are 0 and the device enable
+ * bit is set to 1.
* per Section 7.5.14 of the data sheet
*/
+ ret = regmap_write(led->regmap, LM3692X_EN, LM3692X_DEVICE_EN);
+ if (ret)
+ goto out;
+
+ /* Set the brightness to 0 so when enabled the LEDs do not come
+ * on with full brightness.
+ */
+ ret = regmap_write(led->regmap, LM3692X_BRT_MSB, 0);
+ if (ret)
+ goto out;
+
+ ret = regmap_write(led->regmap, LM3692X_BRT_LSB, 0);
+ if (ret)
+ goto out;
+
ret = regmap_write(led->regmap, LM3692X_PWM_CTRL,
LM3692X_PWM_FILTER_100 | LM3692X_PWM_SAMP_24MHZ);
if (ret)
@@ -258,6 +274,38 @@ static int lm3692x_init(struct lm3692x_led *led)
if (ret)
goto out;
+ switch (led->led_enable) {
+ case 0:
+ default:
+ if (led->model_id == LM36923_MODEL)
+ enable_state = LM3692X_LED1_EN | LM3692X_LED2_EN |
+ LM36923_LED3_EN;
+ else
+ enable_state = LM3692X_LED1_EN | LM3692X_LED2_EN;
+
+ break;
+ case 1:
+ enable_state = LM3692X_LED1_EN;
+ break;
+ case 2:
+ enable_state = LM3692X_LED2_EN;
+ break;
+
+ case 3:
+ if (led->model_id == LM36923_MODEL) {
+ enable_state = LM36923_LED3_EN;
+ break;
+ }
+
+ ret = -EINVAL;
+ dev_err(&led->client->dev,
+ "LED3 sync not available on this device\n");
+ goto out;
+ }
+
+ ret = regmap_update_bits(led->regmap, LM3692X_EN, LM3692X_ENABLE_MASK,
+ enable_state | LM3692X_DEVICE_EN);
+
return ret;
out:
dev_err(&led->client->dev, "Fail writing initialization values\n");
@@ -274,52 +322,75 @@ out:
return ret;
}
-
-static int lm3692x_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int lm3692x_probe_dt(struct lm3692x_led *led)
{
- int ret;
- struct lm3692x_led *led;
- struct device_node *np = client->dev.of_node;
- struct device_node *child_node;
+ struct fwnode_handle *child = NULL;
const char *name;
+ int ret;
- led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL);
- if (!led)
- return -ENOMEM;
-
- for_each_available_child_of_node(np, child_node) {
- led->led_dev.default_trigger = of_get_property(child_node,
- "linux,default-trigger",
- NULL);
-
- ret = of_property_read_string(child_node, "label", &name);
- if (!ret)
- snprintf(led->label, sizeof(led->label),
- "%s:%s", id->name, name);
- else
- snprintf(led->label, sizeof(led->label),
- "%s::backlight_cluster", id->name);
- };
-
- led->enable_gpio = devm_gpiod_get_optional(&client->dev,
+ led->enable_gpio = devm_gpiod_get_optional(&led->client->dev,
"enable", GPIOD_OUT_LOW);
if (IS_ERR(led->enable_gpio)) {
ret = PTR_ERR(led->enable_gpio);
- dev_err(&client->dev, "Failed to get enable gpio: %d\n", ret);
+ dev_err(&led->client->dev, "Failed to get enable gpio: %d\n",
+ ret);
return ret;
}
- led->regulator = devm_regulator_get(&client->dev, "vled");
+ led->regulator = devm_regulator_get(&led->client->dev, "vled");
if (IS_ERR(led->regulator))
led->regulator = NULL;
- led->client = client;
+ child = device_get_next_child_node(&led->client->dev, child);
+ if (!child) {
+ dev_err(&led->client->dev, "No LED Child node\n");
+ return -ENODEV;
+ }
+
+ fwnode_property_read_string(child, "linux,default-trigger",
+ &led->led_dev.default_trigger);
+
+ ret = fwnode_property_read_string(child, "label", &name);
+ if (ret)
+ snprintf(led->label, sizeof(led->label),
+ "%s::", led->client->name);
+ else
+ snprintf(led->label, sizeof(led->label),
+ "%s:%s", led->client->name, name);
+
+ ret = fwnode_property_read_u32(child, "reg", &led->led_enable);
+ if (ret) {
+ dev_err(&led->client->dev, "reg DT property missing\n");
+ return ret;
+ }
+
led->led_dev.name = led->label;
- led->led_dev.brightness_set_blocking = lm3692x_brightness_set;
- mutex_init(&led->lock);
+ ret = devm_led_classdev_register(&led->client->dev, &led->led_dev);
+ if (ret) {
+ dev_err(&led->client->dev, "led register err: %d\n", ret);
+ return ret;
+ }
+
+ led->led_dev.dev->of_node = to_of_node(child);
+
+ return 0;
+}
+static int lm3692x_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct lm3692x_led *led;
+ int ret;
+
+ led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL);
+ if (!led)
+ return -ENOMEM;
+
+ mutex_init(&led->lock);
+ led->client = client;
+ led->led_dev.brightness_set_blocking = lm3692x_brightness_set;
+ led->model_id = id->driver_data;
i2c_set_clientdata(client, led);
led->regmap = devm_regmap_init_i2c(client, &lm3692x_regmap_config);
@@ -330,15 +401,13 @@ static int lm3692x_probe(struct i2c_client *client,
return ret;
}
- ret = lm3692x_init(led);
+ ret = lm3692x_probe_dt(led);
if (ret)
return ret;
- ret = devm_led_classdev_register(&client->dev, &led->led_dev);
- if (ret) {
- dev_err(&client->dev, "led register err: %d\n", ret);
+ ret = lm3692x_init(led);
+ if (ret)
return ret;
- }
return 0;
}
@@ -348,6 +417,12 @@ static int lm3692x_remove(struct i2c_client *client)
struct lm3692x_led *led = i2c_get_clientdata(client);
int ret;
+ ret = regmap_update_bits(led->regmap, LM3692X_EN, LM3692X_DEVICE_EN, 0);
+ if (ret) {
+ dev_err(&led->client->dev, "Failed to disable regulator\n");
+ return ret;
+ }
+
if (led->enable_gpio)
gpiod_direction_output(led->enable_gpio, 0);
@@ -364,8 +439,8 @@ static int lm3692x_remove(struct i2c_client *client)
}
static const struct i2c_device_id lm3692x_id[] = {
- { "lm36922", 0 },
- { "lm36923", 1 },
+ { "lm36922", LM36922_MODEL },
+ { "lm36923", LM36923_MODEL },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm3692x_id);
drivers/leds/leds-lt3593.c
View filediff --git a/drivers/leds/leds-lt3593.c b/drivers/leds/leds-lt3593.c
index 5ec730a..de3623e 100644
--- a/drivers/leds/leds-lt3593.c
+++ b/drivers/leds/leds-lt3593.c
@@ -1,32 +1,21 @@
-/*
- * LEDs driver for LT3593 controllers
- *
- * See the datasheet at http://cds.linear.com/docs/Datasheet/3593f.pdf
- *
- * Copyright (c) 2009 Daniel Mack <[email protected]>
- *
- * Based on leds-gpio.c,
- *
- * Copyright (C) 2007 8D Technologies inc.
- * Raphael Assenat <[email protected]>
- * Copyright (C) 2008 Freescale Semiconductor, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2009,2018 Daniel Mack <[email protected]>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/delay.h>
#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/of.h>
+#include <uapi/linux/uleds.h>
struct lt3593_led_data {
+ char name[LED_MAX_NAME_SIZE];
struct led_classdev cdev;
- unsigned gpio;
+ struct gpio_desc *gpiod;
};
static int lt3593_led_set(struct led_classdev *led_cdev,
@@ -46,137 +35,168 @@ static int lt3593_led_set(struct led_classdev *led_cdev,
*/
if (value == 0) {
- gpio_set_value_cansleep(led_dat->gpio, 0);
+ gpiod_set_value_cansleep(led_dat->gpiod, 0);
return 0;
}
pulses = 32 - (value * 32) / 255;
if (pulses == 0) {
- gpio_set_value_cansleep(led_dat->gpio, 0);
+ gpiod_set_value_cansleep(led_dat->gpiod, 0);
mdelay(1);
- gpio_set_value_cansleep(led_dat->gpio, 1);
+ gpiod_set_value_cansleep(led_dat->gpiod, 1);
return 0;
}
- gpio_set_value_cansleep(led_dat->gpio, 1);
+ gpiod_set_value_cansleep(led_dat->gpiod, 1);
while (pulses--) {
- gpio_set_value_cansleep(led_dat->gpio, 0);
+ gpiod_set_value_cansleep(led_dat->gpiod, 0);
This diff is incomplete. Download the complete patch.
drivers/leds/leds-max8997.c
View fileThis diff is incomplete. Download the complete patch.
drivers/leds/leds-ns2.c
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drivers/leds/trigger/Kconfig
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drivers/leds/trigger/ledtrig-activity.c
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drivers/leds/trigger/ledtrig-backlight.c
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drivers/leds/trigger/ledtrig-camera.c
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drivers/leds/trigger/ledtrig-default-on.c
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drivers/leds/trigger/ledtrig-gpio.c
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drivers/leds/trigger/ledtrig-heartbeat.c
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drivers/leds/trigger/ledtrig-netdev.c
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drivers/leds/trigger/ledtrig-oneshot.c
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drivers/leds/trigger/ledtrig-timer.c
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drivers/leds/trigger/ledtrig-transient.c
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drivers/net/can/Kconfig
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drivers/tty/vt/keyboard.c
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drivers/usb/core/ledtrig-usbport.c
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include/linux/leds.h
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net/bluetooth/leds.c
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net/mac80211/led.c
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net/rfkill/core.c
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