| /linux/Documentation/devicetree/bindings/mfd/ |
| H A D | ti-lmu.txt | 6 ------ ---------------------------------
7 LM3631 Backlight and regulator
8 LM3632 Backlight and regulator
9 LM3633 Backlight, LED and fault monitor
10 LM3695 Backlight
11 LM36274 Backlight and regulator
14 - compatible: Should be one of:
20 - reg: I2C slave address.
28 - enable-gpios: A GPIO specifier for hardware enable pin.
29 - ramp-up-us: Current ramping from one brightness level to
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| H A D | mediatek,mt6370.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
13 MT6370 is a highly-integrated smart power management IC, which includes a
14 single cell Li-Ion/Li-Polymer switching battery charger, a USB Type-C &
15 Power Delivery (PD) controller, dual flash LED current sources, a RGB LED
16 driver, a backlight WLED driver, a display bias driver and a general LDO for
26 wakeup-source: true
31 interrupt-controller: true
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| H A D | 88pm860x.txt | 4 - compatible : "marvell,88pm860x"
5 - reg : the I2C slave address for the 88pm860x chip
6 - interrupts : IRQ line for the 88pm860x chip
7 - interrupt-controller: describes the 88pm860x as an interrupt controller (has its own domain)
8 - #interrupt-cells : should be 1.
9 - The cell is the 88pm860x local IRQ number
12 - marvell,88pm860x-irq-read-clr: inicates whether interrupt status is cleared by read
13 - marvell,88pm860x-slave-addr: 88pm860x are two chips solution. <reg> stores the I2C address
17 88pm860x consists of a large and varied group of sub-devices:
20 ------ ------------ -----------
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| H A D | sky81452.txt | 4 - compatible : Must be "skyworks,sky81452"
5 - reg : I2C slave address
8 - backlight : container node for backlight following the binding
9 in leds/backlight/sky81452-backlight.txt
10 - regulator : container node for regulators following the binding
11 in regulator/sky81452-regulator.txt
19 backlight {
20 compatible = "skyworks,sky81452-backlight";
21 name = "pwm-backlight";
22 led-sources = <0 1 2 3 6>;
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| /linux/Documentation/devicetree/bindings/leds/ |
| H A D | leds-lm36274.txt | 1 * Texas Instruments LM36274 4-Channel LCD Backlight Driver w/Integrated Bias
3 The LM36274 is an integrated four-channel WLED driver and LCD bias supply.
4 The backlight boost provides the power to bias four parallel LED strings with
5 up to 29V total output voltage. The 11-bit LED current is programmable via
9 Documentation/devicetree/bindings/mfd/ti-lmu.txt
12 Documentation/devicetree/bindings/regulator/lm363x-regulator.txt
14 Required backlight properties:
15 - compatible:
16 "ti,lm36274-backlight"
17 - reg : 0
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| H A D | leds-lm3532.txt | 1 * Texas Instruments - lm3532 White LED driver with ambient light sensing
4 The LM3532 provides the 3 high-voltage, low-side current sinks. The device is
5 programmable over an I2C-compatible interface and has independent
7 method allows for different LED currents in each current sink thus allowing
8 for a wide variety of backlight and keypad applications.
11 each with 32 internal voltage setting resistors, 8-bit logarithmic and linear
16 - compatible : "ti,lm3532"
17 - reg : I2C slave address
18 - #address-cells : 1
19 - #size-cells : 0
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| /linux/drivers/leds/trigger/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "LED Trigger support"
13 tristate "LED Timer Trigger"
16 via sysfs. Some LED hardware can be programmed to start
17 blinking the LED without any further software interaction.
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
28 or on dense events, where this blinks the LED at constant rate if
36 bool "LED Disk Trigger"
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| H A D | ledtrig-backlight.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Backlight emulation LED trigger
20 struct led_classdev *led; member
33 struct led_classdev *led = n->led; in ledtrig_backlight_notify_blank() local
35 if (new_status == n->old_status) in ledtrig_backlight_notify_blank()
38 if ((n->old_status == UNBLANK) ^ n->invert) { in ledtrig_backlight_notify_blank()
39 n->brightness = led->brightness; in ledtrig_backlight_notify_blank()
40 led_set_brightness_nosleep(led, LED_OFF); in ledtrig_backlight_notify_blank()
42 led_set_brightness_nosleep(led, n->brightness); in ledtrig_backlight_notify_blank()
45 n->old_status = new_status; in ledtrig_backlight_notify_blank()
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| /linux/arch/arm/boot/dts/ti/omap/ |
| H A D | omap4-xyboard-mz609.dts | 1 // SPDX-License-Identifier: GPL-2.0-only
2 /dts-v1/;
4 #include "motorola-mapphone-mz607-mz617.dtsi"
8 compatible = "motorola,xyboard-mz609", "ti,omap4430", "ti,omap4";
11 stdout-path = &uart3;
18 backlight: backlight { label
19 compatible = "led-backlight";
22 brightness-levels = <31 63 95 127 159 191 223 255>;
23 default-brightness-level = <6>;
28 led-controller@38 {
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| /linux/Documentation/devicetree/bindings/leds/backlight/ |
| H A D | kinetic,ktz8866.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/kinetic,ktz8866.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Kinetic Technologies KTZ8866 backlight
10 - Jianhua Lu <lujianhua000@gmail.com>
13 The Kinetic Technologies KTZ8866 is a high efficiency 6-channels-current-sinks
14 led backlight with dual lcd bias power.
15 https://www.kinet-ic.com/ktz8866/
18 - $ref: common.yaml#
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| H A D | common.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Common backlight properties
10 - Lee Jones <lee@kernel.org>
11 - Daniel Thompson <daniel.thompson@linaro.org>
12 - Jingoo Han <jingoohan1@gmail.com>
15 Backlight devices provide backlight for different types of graphical
17 LED powered by a boost converter.
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| H A D | lm3630a-backlight.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/lm3630a-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI LM3630A High-Efficiency Dual-String White LED
10 - Lee Jones <lee@kernel.org>
11 - Daniel Thompson <daniel.thompson@linaro.org>
12 - Jingoo Han <jingoohan1@gmail.com>
15 The LM3630A is a current-mode boost converter which supplies the power and
26 '#address-cells':
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| H A D | ti,lm3509.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/ti,lm3509.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI LM3509 High Efficiency Boost for White LED's and/or OLED Displays
10 - Patrick Gansterer <paroga@paroga.com>
23 "#address-cells":
26 "#size-cells":
29 reset-gpios:
32 ti,brightness-rate-of-change-us:
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| H A D | ti,lp8864.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/ti,lp8864.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Texas Instruments - LP8864/LP8866 4/6-Channel LED Driver family
10 - Andrew Davis <afd@ti.com>
11 - Alexander Sverdlin <alexander.sverdlin@siemens.com>
14 LP8866-Q1, LP8866S-Q1, LP8864-Q1, LP8864S-Q1 are display LED-backlight drivers
15 with 4/6 channels. LED brightness can be controlled globally through the I2C
19 https://www.ti.com/product/LP8864-Q1
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| H A D | sky81452-backlight.txt | 1 SKY81452-backlight bindings
4 - compatible : Must be "skyworks,sky81452-backlight"
7 - name : Name of backlight device. Default is 'lcd-backlight'.
8 - gpios : GPIO to use to EN pin.
10 - led-sources : List of enabled channels from 0 to 5.
12 - skyworks,ignore-pwm : Ignore both PWM input
13 - skyworks,dpwm-mode : Enable DPWM dimming mode, otherwise Analog dimming.
14 - skyworks,phase-shift : Enable phase shift mode
15 - skyworks,short-detection-threshold-volt
17 - skyworks,current-limit-mA
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| H A D | richtek,rt4831-backlight.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/richtek,rt4831-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Richtek RT4831 Backlight
10 - ChiYuan Huang <cy_huang@richtek.com>
14 and LCD backlight.
16 For the LCD backlight, it can provide four channel WLED driving capability.
20 https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
23 - $ref: common.yaml#
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| /linux/Documentation/leds/ |
| H A D | well-known-leds.txt | 1 -*- org -*-
4 userland. LED devices have one problem there, and that is naming of
6 just know right "name" for given LED function, but situation got more
17 Notice there's a list of functions in include/dt-bindings/leds/common.h .
24 player. For example, a game controller with 4 LEDs, may be programmed with "x---"
25 to indicate player 1, "-x--" to indicate player 2 etcetera where "x" means on.
26 Input drivers can utilize the LED class to expose the individual player LEDs
31 Good: "input*:*:player-{1,2,3,4,5}
38 Legacy: "shift-key-light" (Motorola Droid 4, capslock)
45 Frontlight/backlight of main keyboard.
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| /linux/arch/arm/boot/dts/st/ |
| H A D | stm32mp157c-lxa-mc1.dts | 1 /* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause) */
3 * Copyright (C) 2020 STMicroelectronics - All Rights Reserved
7 /dts-v1/;
10 #include "stm32mp15xx-osd32.dtsi"
11 #include "stm32mp15xxac-pinctrl.dtsi"
13 #include <dt-bindings/gpio/gpio.h>
14 #include <dt-bindings/pwm/pwm.h>
17 model = "Linux Automation MC-1 board";
18 compatible = "lxa,stm32mp157c-mc1", "oct,stm32mp15xx-osd32", "st,stm32mp157";
27 backlight: backlight { label
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| H A D | stm32mp153c-lxa-fairytux2.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause)
3 * Copyright (C) 2020 STMicroelectronics - All Rights Reserved
10 #include "stm32mp15xx-osd32.dtsi"
11 #include "stm32mp15xxac-pinctrl.dtsi"
13 #include <dt-bindings/gpio/gpio.h>
14 #include <dt-bindings/input/input.h>
15 #include <dt-bindings/leds/common.h>
16 #include <dt-bindings/pwm/pwm.h>
31 stdout-path = &uart4;
34 backlight: backlight { label
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| /linux/Documentation/admin-guide/laptops/ |
| H A D | uniwill-laptop.rst | 1 .. SPDX-License-Identifier: GPL-2.0+
6 On laptops manufactured by Uniwill (either directly or as ODM), the ``uniwill-laptop`` driver
7 handles various platform-specific features.
10 --------------
12 The ``uniwill-laptop`` driver relies on a DMI table to automatically load on supported devices.
17 -------
19 Usually the FN keys work without a special driver. However as soon as the ``uniwill-laptop`` driver
23 -----------------
25 The ``uniwill-laptop`` driver allows the user to enable/disable:
27 - the FN lock and super key of the integrated keyboard
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| H A D | lg-laptop.rst | 1 .. SPDX-License-Identifier: GPL-2.0+
7 By Matan Ziv-Av <matan@svgalib.org>
11 -------
15 - FN-F1 (LG control panel) - Generates F15
16 - FN-F5 (Touchpad toggle) - Generates F21
17 - FN-F6 (Airplane mode) - Generates RFKILL
18 - FN-F9 (Reader mode) - Generates F14
24 -----------
26 Writing 0/1 to /sys/devices/platform/lg-laptop/reader_mode disables/enables
28 and the reader mode indicator LED (on F9 key) turns on.
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| /linux/arch/arm/boot/dts/microchip/ |
| H A D | at91-sama5d4_ma5d4evk.dts | 1 // SPDX-License-Identifier: GPL-2.0-or-later
6 /dts-v1/;
7 #include "at91-sama5d4_ma5d4.dtsi"
14 stdout-path = "serial3:115200n8";
19 atmel,vbus-gpio = <&pioE 31 GPIO_ACTIVE_HIGH>;
20 pinctrl-names = "default";
21 pinctrl-0 = <&pinctrl_usba_vbus>;
26 num-ports = <3>;
27 atmel,vbus-gpio = <0
42 hlcdc-display-controller {
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| /linux/drivers/hid/ |
| H A D | hid-lg-g15.c | 1 // SPDX-License-Identifier: GPL-2.0+
11 #include <linux/led-class-multicolor.h>
17 #include <dt-bindings/leds/common.h>
19 #include "hid-ids.h"
38 * g13_input_report.keybits[] is not 32-bit aligned, so we can't use the bitops macros.
77 enum lg_g15_led_type led; member
85 /* Protects the transfer_buf and led brightness */
94 bool backlight_disabled; /* true == HW backlight toggled *OFF* */
97 /********* G13 LED functions ***********/
99 * G13 retains no state across power cycles, and always powers up with the backlight on,
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| /linux/include/linux/platform_data/ |
| H A D | adp8860.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 * Backlight drivers ADP8860
6 * Copyright 2009-2010 Analog Devices Inc.
43 * Backlight subdevice platform data
101 u8 bl_led_assign; /* 1 = Backlight 0 = Individual LED */
103 u8 bl_fade_in; /* Backlight Fade-In Timer */
104 u8 bl_fade_out; /* Backlight Fade-Out Timer */
105 u8 bl_fade_law; /* fade-on/fade-off transfer characteristic */
124 * Sinks not assigned to the Backlight can be exposed to
130 u8 led_fade_in; /* LED Fade-In Timer */
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| H A D | adp8870.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 * Backlight drivers ADP8870
6 * Copyright 2009-2010 Analog Devices Inc.
40 * Backlight subdevice platform data
108 u8 bl_led_assign; /* 1 = Backlight 0 = Individual LED */
111 u8 bl_fade_in; /* Backlight Fade-In Timer */
112 u8 bl_fade_out; /* Backlight Fade-Out Timer */
113 u8 bl_fade_law; /* fade-on/fade-off transfer characteristic */
140 * Sinks not assigned to the Backlight can be exposed to
146 u8 led_fade_in; /* LED Fade-In Timer */
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