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/kernel/linux/linux-6.6/Documentation/devicetree/bindings/leds/
Dcommon.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/leds/common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Common leds properties
10 - Jacek Anaszewski <jacek.anaszewski@gmail.com>
11 - Pavel Machek <pavel@ucw.cz>
25 led-sources:
30 $ref: /schemas/types.yaml#/definitions/uint32-array
35 from the header include/dt-bindings/leds/common.h. If there is no
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Dregulator-led.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/regulator-led.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Regulator LEDs
10 - Linus Walleij <linus.walleij@linaro.org>
13 Regulator LEDs are powered by a single regulator such that they can
20 - $ref: common.yaml#
24 pattern: '^led.*$'
27 const: regulator-led
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Dregister-bit-led.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/register-bit-led.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Register Bit LEDs
10 - Linus Walleij <linus.walleij@linaro.org>
13 Register bit leds are used with syscon multifunctional devices where single
14 bits in a certain register can turn on/off a single LED. The register bit LEDs
20 - $ref: /schemas/leds/common.yaml#
25 The unit-address is in the form of @<reg addr>,<bit offset>
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/kernel/linux/linux-5.10/Documentation/devicetree/bindings/leds/
Dcommon.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/leds/common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Common leds properties
10 - Jacek Anaszewski <jacek.anaszewski@gmail.com>
11 - Pavel Machek <pavel@ucw.cz>
25 led-sources:
30 $ref: /schemas/types.yaml#definitions/uint32-array
35 from the header include/dt-bindings/leds/common.h. If there is no
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/kernel/linux/linux-5.10/drivers/leds/trigger/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "LED Trigger support"
6 This option enables trigger support for the leds class.
7 These triggers allow kernel events to drive the LEDs and can
13 tristate "LED Timer Trigger"
15 This allows LEDs to be controlled by a programmable timer
18 For more details read Documentation/leds/leds-class.rst.
23 tristate "LED One-shot Trigger"
25 This allows LEDs to blink in one-shot pulses with parameters
36 bool "LED Disk Trigger"
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Dledtrig-oneshot.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * One-shot LED Trigger
7 * Based on ledtrig-timer.c by Richard Purdie <rpurdie@openedhand.com>
16 #include <linux/leds.h>
17 #include "../leds.h"
32 &led_cdev->blink_delay_on, &led_cdev->blink_delay_off, in led_shot()
33 oneshot_data->invert); in led_shot()
43 return sprintf(buf, "%u\n", oneshot_data->invert); in led_invert_show()
58 oneshot_data->invert = !!state; in led_invert_store()
60 if (oneshot_data->invert) in led_invert_store()
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Dledtrig-timer.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * LED Kernel Timer Trigger
5 * Copyright 2005-2006 Openedhand Ltd.
16 #include <linux/leds.h>
23 return sprintf(buf, "%lu\n", led_cdev->blink_delay_on); in led_delay_on_show()
37 led_blink_set(led_cdev, &state, &led_cdev->blink_delay_off); in led_delay_on_store()
38 led_cdev->blink_delay_on = state; in led_delay_on_store()
48 return sprintf(buf, "%lu\n", led_cdev->blink_delay_off); in led_delay_off_show()
62 led_blink_set(led_cdev, &led_cdev->blink_delay_on, &state); in led_delay_off_store()
63 led_cdev->blink_delay_off = state; in led_delay_off_store()
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Dledtrig-pattern.c1 // SPDX-License-Identifier: GPL-2.0
4 * LED pattern trigger
11 #include <linux/leds.h>
41 data->curr = data->next; in pattern_trig_update_patterns()
42 if (!data->is_indefinite && data->curr == data->patterns) in pattern_trig_update_patterns()
43 data->repeat--; in pattern_trig_update_patterns()
45 if (data->next == data->patterns + data->npatterns - 1) in pattern_trig_update_patterns()
46 data->next = data->patterns; in pattern_trig_update_patterns()
48 data->next++; in pattern_trig_update_patterns()
50 data->delta_t = 0; in pattern_trig_update_patterns()
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/kernel/linux/linux-6.6/drivers/leds/trigger/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "LED Trigger support"
6 This option enables trigger support for the leds class.
7 These triggers allow kernel events to drive the LEDs and can
13 tristate "LED Timer Trigger"
15 This allows LEDs to be controlled by a programmable timer
18 For more details read Documentation/leds/leds-class.rst.
23 tristate "LED One-shot Trigger"
25 This allows LEDs to blink in one-shot pulses with parameters
36 bool "LED Disk Trigger"
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Dledtrig-oneshot.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * One-shot LED Trigger
7 * Based on ledtrig-timer.c by Richard Purdie <rpurdie@openedhand.com>
16 #include <linux/leds.h>
17 #include "../leds.h"
32 &led_cdev->blink_delay_on, &led_cdev->blink_delay_off, in led_shot()
33 oneshot_data->invert); in led_shot()
43 return sprintf(buf, "%u\n", oneshot_data->invert); in led_invert_show()
58 oneshot_data->invert = !!state; in led_invert_store()
60 if (oneshot_data->invert) in led_invert_store()
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Dledtrig-timer.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * LED Kernel Timer Trigger
5 * Copyright 2005-2006 Openedhand Ltd.
16 #include <linux/leds.h>
23 return sprintf(buf, "%lu\n", led_cdev->blink_delay_on); in led_delay_on_show()
37 led_blink_set(led_cdev, &state, &led_cdev->blink_delay_off); in led_delay_on_store()
38 led_cdev->blink_delay_on = state; in led_delay_on_store()
48 return sprintf(buf, "%lu\n", led_cdev->blink_delay_off); in led_delay_off_show()
62 led_blink_set(led_cdev, &led_cdev->blink_delay_on, &state); in led_delay_off_store()
63 led_cdev->blink_delay_off = state; in led_delay_off_store()
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Dledtrig-pattern.c1 // SPDX-License-Identifier: GPL-2.0
4 * LED pattern trigger
11 #include <linux/leds.h>
41 data->curr = data->next; in pattern_trig_update_patterns()
42 if (!data->is_indefinite && data->curr == data->patterns) in pattern_trig_update_patterns()
43 data->repeat--; in pattern_trig_update_patterns()
45 if (data->next == data->patterns + data->npatterns - 1) in pattern_trig_update_patterns()
46 data->next = data->patterns; in pattern_trig_update_patterns()
48 data->next++; in pattern_trig_update_patterns()
50 data->delta_t = 0; in pattern_trig_update_patterns()
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/kernel/linux/linux-6.6/Documentation/leds/
Dleds-qcom-lpg.rst1 .. SPDX-License-Identifier: GPL-2.0
8 -----------
11 number of PWM channels, a programmable pattern lookup table and a RGB LED
15 individual LEDs, grouped together as RGB LEDs or otherwise be accessed as PWM
23 deeper idle states the LPG provides pattern support. This consists of a shared
25 range within the table to use, the rate and if the pattern should repeat.
27 The pattern for a channel can be programmed using the "pattern" trigger, using
30 /sys/class/leds/<led>/hw_pattern
31 --------------------------------
33 Specify a hardware pattern for a Qualcomm LPG LED.
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Dleds-mt6370-rgb.rst1 .. SPDX-License-Identifier: GPL-2.0
8 -----------
10 The MT6370 integrates a four-channel RGB LED driver, designed to provide a
12 includes a smart LED string controller and it can drive 3 channels of LEDs with
14 current up to 6mA. It provides three operation modes for RGB LEDs:
15 PWM Dimming mode, breath pattern mode, and constant current mode. The device
18 The breath pattern for a channel can be programmed using the "pattern" trigger,
21 /sys/class/leds/<led>/hw_pattern
22 --------------------------------
24 Specify a hardware breath pattern for a MT6370 RGB LED.
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/kernel/linux/linux-6.6/Documentation/ABI/testing/
Dsysfs-class-led-trigger-pattern1 What: /sys/class/leds/<led>/pattern
5 Specify a software pattern for the LED, that supports altering
9 The pattern is given by a series of tuples, of brightness and
13 Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
15 What: /sys/class/leds/<led>/hw_pattern
19 Specify a hardware pattern for the LED, for LED hardware that
22 software pattern.
27 file at Documentation/leds/.
29 What: /sys/class/leds/<led>/repeat
33 Specify a pattern repeat number. -1 means repeat indefinitely,
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/kernel/linux/linux-5.10/Documentation/ABI/testing/
Dsysfs-class-led-trigger-pattern1 What: /sys/class/leds/<led>/pattern
5 Specify a software pattern for the LED, that supports altering
9 The pattern is given by a series of tuples, of brightness and
13 Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
15 What: /sys/class/leds/<led>/hw_pattern
19 Specify a hardware pattern for the LED, for LED hardware that
22 software pattern.
27 file at Documentation/leds/.
29 What: /sys/class/leds/<led>/repeat
33 Specify a pattern repeat number. -1 means repeat indefinitely,
Dsysfs-class-led-driver-el152030001 What: /sys/class/leds/<led>/repeat
6 so this file should always store -1.
9 Documentation/ABI/testing/sysfs-class-led-trigger-pattern
/kernel/linux/linux-6.6/drivers/leds/
Dleds-cht-wcove.c1 // SPDX-License-Identifier: GPL-2.0
3 * Driver for LEDs connected to the Intel Cherry Trail Whiskey Cove PMIC
14 #include <linux/leds.h>
77 struct cht_wc_led leds[CHT_WC_LED_COUNT]; member
112 mutex_lock(&led->mutex); in cht_wc_leds_brightness_set()
115 ret = regmap_update_bits(led->regmap, led->regs->ctrl, in cht_wc_leds_brightness_set()
116 led->regs->on_off_mask, led->regs->off_val); in cht_wc_leds_brightness_set()
118 dev_err(cdev->dev, "Failed to turn off: %d\n", ret); in cht_wc_leds_brightness_set()
123 ret = regmap_update_bits(led->regmap, led->regs->fsm, in cht_wc_leds_brightness_set()
126 dev_err(cdev->dev, "Failed to update LED FSM reg: %d\n", ret); in cht_wc_leds_brightness_set()
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
13 LEDs from both userspace and optionally, by kernel events (triggers).
20 This option enables the LED sysfs class in /sys/class/leds. You'll
21 need this to do anything useful with LEDs. If unsure, say Y.
27 This option enables the flash LED sysfs class in /sys/class/leds.
28 It wraps LED Class and adds flash LEDs specific sysfs attributes
37 This option enables the multicolor LED sysfs class in /sys/class/leds.
40 for multicolor LEDs that are grouped together. This class is not
41 intended for single color LEDs. It can be built as a module.
48 for LED sysfs class devices under /sys/class/leds.
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/kernel/linux/linux-5.10/include/linux/
Dleds.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Driver model for leds and led triggers
11 #include <dt-bindings/leds/common.h>
41 * with in-driver hard-coded LED names used as a fallback when
54 * only LEDs exposed by drivers of hot-pluggable devices should
100 * Set LED brightness level immediately - it can block the caller for
121 struct led_pattern *pattern, u32 len, int repeat);
128 const char *default_trigger; /* Trigger to use */
140 /* Protects the trigger data below */
143 struct led_trigger *trigger; member
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/kernel/linux/linux-6.6/include/linux/
Dleds.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Driver model for leds and led triggers
11 #include <dt-bindings/leds/common.h>
47 * struct led_lookup_data - represents a single LED lookup entry
66 * with in-driver hard-coded LED names used as a fallback when
79 * only LEDs exposed by drivers of hot-pluggable devices should
128 /* Brightness off also disables hw-blinking so it is a separate action */
140 * Set LED brightness level immediately - it can block the caller for
165 struct led_pattern *pattern, u32 len, int repeat);
172 const char *default_trigger; /* Trigger to use */
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/kernel/linux/linux-6.6/drivers/tty/vt/
Dkeyboard.c1 // SPDX-License-Identifier: GPL-2.0
15 * 11-11-96: SAK should now work in the raw mode (Martin Mares)
18 * Merge with the m68k keyboard driver and split-off of the PC low-level
21 * 27-05-97: Added support for the Magic SysRq Key (Martin Mares)
22 * 30-07-98: Dead keys redone, aeb@cwi.nl.
23 * 21-08-02: Converted to input API, major cleanup. (Vojtech Pavlik)
34 #include <linux/leds.h>
116 [ KT_FN ] = ARRAY_SIZE(func_table) - 1,
117 [ KT_SPEC ] = ARRAY_SIZE(fn_handler) - 1,
118 [ KT_PAD ] = NR_PAD - 1,
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/kernel/linux/linux-5.10/drivers/tty/vt/
Dkeyboard.c1 // SPDX-License-Identifier: GPL-2.0
15 * 11-11-96: SAK should now work in the raw mode (Martin Mares)
18 * Merge with the m68k keyboard driver and split-off of the PC low-level
21 * 27-05-97: Added support for the Magic SysRq Key (Martin Mares)
22 * 30-07-98: Dead keys redone, aeb@cwi.nl.
23 * 21-08-02: Converted to input API, major cleanup. (Vojtech Pavlik)
39 #include <linux/leds.h>
117 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1,
118 NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1,
119 255, NR_LOCK - 1, 255, NR_BRL - 1
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/kernel/linux/linux-6.6/drivers/leds/rgb/
Dleds-qcom-lpg.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2017-2022 Linaro Ltd
4 * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
9 #include <linux/led-class-multicolor.h>
40 #define PWM_DTEST_REG(x) (0xe2 + (x) - 1)
58 * struct lpg - LPG device context
62 * @pwm: PWM-chip object, if operating in PWM mode
68 * @triled_src: power-source for the TRILED
98 * struct lpg_channel - per channel data
102 * @lut_mask: mask in LUT to start pattern generator for this channel
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/kernel/linux/linux-5.10/drivers/leds/
Dleds-tca6507.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * leds-tca6507
8 * The modulation can be varied in a simple pattern to produce a
9 * blink or double-blink.
12 * out-only (pull-up resistor required) or as an LED with variable
13 * brightness and hardware-assisted blinking.
21 * with separate time for rise, on, fall, off and second-off. Thus if
22 * 3 or more different non-trivial rates are required, software must
25 * support double-blink so 'second-off' always matches 'off'.
42 * delays in the ranges: 56-72, 112-144, 168-216, 224-27504,
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