| /Linux-v6.1/Documentation/devicetree/bindings/mfd/ |
| 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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| 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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| /Linux-v6.1/Documentation/devicetree/bindings/leds/backlight/ |
| D | led-backlight.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/led-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: led-backlight bindings
10 - Lee Jones <lee@kernel.org>
11 - Daniel Thompson <daniel.thompson@linaro.org>
12 - Jingoo Han <jingoohan1@gmail.com>
15 This binding is used to describe a basic backlight device made of LEDs. It
16 can also be used to describe a backlight device controlled by the output of
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| 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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| 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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| D | arcxcnn_bl.txt | 1 Binding for ArcticSand arc2c0608 LED driver
4 - compatible: should be "arc,arc2c0608"
5 - reg: slave address
8 - default-brightness: brightness value on boot, value from: 0-4095
9 - label: The name of the backlight device
11 - led-sources: List of enabled channels from 0 to 5.
14 - arc,led-config-0: setting for register ILED_CONFIG_0
15 - arc,led-config-1: setting for register ILED_CONFIG_1
16 - arc,dim-freq: PWM mode frequence setting (bits [3:0] used)
17 - arc,comp-config: setting for register CONFIG_COMP
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| 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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| 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-v6.1/Documentation/devicetree/bindings/leds/ |
| 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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| D | leds-lm3697.txt | 1 * Texas Instruments - LM3697 Highly Efficient White LED Driver
3 The LM3697 11-bit LED driver provides high-
4 performance backlight dimming for 1, 2, or 3 series
5 LED strings while delivering up to 90% efficiency.
10 - compatible:
12 - reg : I2C slave address
13 - #address-cells : 1
14 - #size-cells : 0
17 - enable-gpios : GPIO pin to enable/disable the device
18 - vled-supply : LED supply
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| 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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| D | leds-pm8058.txt | 1 Qualcomm PM8058 LED driver
3 The Qualcomm PM8058 is a multi-functional device which contains
4 an LED driver block for up to six LEDs: three normal LEDs, two
5 "flash" LEDs and one "keypad backlight" LED. The names are
6 quoted because sometimes these LED drivers are used for wildly
7 different things than flash or keypad backlight: their names
8 are more of a suggestion than a hard-wired usecase.
10 Hardware-wise the different LEDs support slightly different
12 do they support external triggers. They are just powerful LED
17 mfd/qcom-pm8xxx.txt.
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| /Linux-v6.1/Documentation/devicetree/bindings/chrome/ |
| D | google,cros-kbd-led-backlight.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/chrome/google,cros-kbd-led-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ChromeOS keyboard backlight LED driver.
10 - Tzung-Bi Shih <tzungbi@kernel.org>
14 const: google,cros-kbd-led-backlight
17 - compatible
22 - |
24 #address-cells = <1>;
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| /Linux-v6.1/drivers/hid/ |
| D | hid-corsair.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * - Vengeance K70 Keyboard
7 * - K70 RAPIDFIRE Keyboard
8 * - Vengeance K90 Keyboard
9 * - Scimitar PRO RGB Gaming Mouse
24 #include "hid-ids.h"
43 struct k90_led *backlight; member
52 return usage - 0xd0 + 1; in corsair_usage_to_gkey()
55 return usage - 0xe8 + 17; in corsair_usage_to_gkey()
81 MODULE_PARM_DESC(gkey_codes, "Key codes for the G-keys");
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| /Linux-v6.1/drivers/video/backlight/ |
| D | adp8860_bl.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Backlight driver for Analog Devices ADP8860 Backlight Devices
5 * Copyright 2009-2010 Analog Devices Inc.
15 #include <linux/backlight.h>
29 #define ADP8860_BLSEN 0x05 /* Sink enable backlight or independent */
30 #define ADP8860_BLOFF 0x06 /* Backlight off timeout */
31 #define ADP8860_BLDIM 0x07 /* Backlight dim timeout */
32 #define ADP8860_BLFR 0x08 /* Backlight fade in and out rates */
33 #define ADP8860_BLMX1 0x09 /* Backlight (Brightness Level 1-daylight) maximum current */
34 #define ADP8860_BLDM1 0x0A /* Backlight (Brightness Level 1-daylight) dim current */
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| D | adp8870_bl.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Backlight driver for Analog Devices ADP8870 Backlight Devices
5 * Copyright 2009-2011 Analog Devices Inc.
15 #include <linux/backlight.h>
30 #define ADP8870_BLSEL 0x05 /* Sink enable backlight or independent */
32 #define ADP8870_BLOFF 0x07 /* Backlight off timeout */
33 #define ADP8870_BLDIM 0x08 /* Backlight dim timeout */
34 #define ADP8870_BLFR 0x09 /* Backlight fade in and out rates */
35 #define ADP8870_BLMX1 0x0A /* Backlight (Brightness Level 1-daylight) maximum current */
36 #define ADP8870_BLDM1 0x0B /* Backlight (Brightness Level 1-daylight) dim current */
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| D | led_bl.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2015-2019 Texas Instruments Incorporated - http://www.ti.com/
9 #include <linux/backlight.h>
30 if (priv->levels) in led_bl_set_brightness()
31 bkl_brightness = priv->levels[level]; in led_bl_set_brightness()
35 for (i = 0; i < priv->nb_leds; i++) in led_bl_set_brightness()
36 led_set_brightness(priv->leds[i], bkl_brightness); in led_bl_set_brightness()
38 priv->enabled = true; in led_bl_set_brightness()
45 if (!priv->enabled) in led_bl_power_off()
48 for (i = 0; i < priv->nb_leds; i++) in led_bl_power_off()
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| D | arcxcnn_bl.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Backlight driver for ArcticSand ARC_X_C_0N_0N Devices
9 #include <linux/backlight.h>
22 * @name : Backlight driver name (NULL will use default)
23 * @initial_brightness : initial value of backlight brightness
24 * @leden : initial LED string enables, upper bit is global on/off
48 #define ARCXCNN_CMD_OVP_MASK 0x0C /* --- Over Voltage Threshold */
62 #define ARCXCNN_LEDEN 0x06 /* LED Enable Register */
63 #define ARCXCNN_LEDEN_ISETEXT 0x80 /* Full-scale current set extern */
64 #define ARCXCNN_LEDEN_MASK 0x3F /* LED string enables mask */
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| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 # Backlight & LCD drivers configuration
6 menu "Backlight & LCD device support"
14 This framework adds support for low-level control of LCD.
15 Some framebuffer devices connect to platform-specific LCD modules
16 in order to have a platform-specific way to control the flat panel
17 (contrast and applying power to the LCD (not to the backlight!)).
90 This driver provides a platform-device registered LCD power
94 tristate "Sharp SL-6000 LCD Driver"
97 If you have an Sharp SL-6000 Zaurus say Y to enable a driver
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| /Linux-v6.1/drivers/leds/trigger/ |
| D | ledtrig-backlight.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Backlight emulation LED trigger
21 struct led_classdev *led; member
33 struct led_classdev *led = n->led; in fb_notifier_callback() local
42 blank = fb_event->data; in fb_notifier_callback()
45 if (new_status == n->old_status) in fb_notifier_callback()
48 if ((n->old_status == UNBLANK) ^ n->invert) { in fb_notifier_callback()
49 n->brightness = led->brightness; in fb_notifier_callback()
50 led_set_brightness_nosleep(led, LED_OFF); in fb_notifier_callback()
52 led_set_brightness_nosleep(led, n->brightness); in fb_notifier_callback()
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| /Linux-v6.1/Documentation/leds/ |
| 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-v6.1/arch/arm/boot/dts/ |
| 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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| /Linux-v6.1/Documentation/admin-guide/laptops/ |
| 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-v6.1/Documentation/ABI/testing/ |
| D | sysfs-class-led | 1 What: /sys/class/leds/<led>/brightness
6 Set the brightness of the LED.
9 just be turned on for non-zero brightness settings.
15 each color LED intensity is set to.
17 The percentage is calculated for each grouped LED via
23 Documentation/leds/leds-class-multicolor.rst.
26 /sys/class/leds/<led>/max_brightness.
30 Writing non-zero to this file while trigger is active changes the
35 What: /sys/class/leds/<led>/max_brightness
40 Maximum brightness level for this LED, default is 255 (LED_FULL).
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| /Linux-v6.1/drivers/gpu/drm/panel/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
17 Y030XX067A 320x480 3.0" panel as found in the YLM RG-280M, RG-300
18 and RG-99 handheld gaming consoles.
41 tristate "Boe BF060Y8M-AJ0 panel"
46 Say Y here if you want to enable support for Boe BF060Y8M-AJ0
49 the host and backlight is controlled through DSI commands.
58 TFT-LCD modules. The panel has a 1200x1920 resolution and uses
60 the host and has a built-in LED backlight.
86 This driver supports LVDS panels that don't require device-specific
88 backlight handling if the panel is attached to a backlight controller.
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