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/linux-6.15/Documentation/devicetree/bindings/leds/backlight/
Dgpio-backlight.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/gpio-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: gpio-backlight
10 - Lee Jones <lee@kernel.org>
11 - Daniel Thompson <daniel.thompson@linaro.org>
12 - Jingoo Han <jingoohan1@gmail.com>
16 const: gpio-backlight
19 description: The gpio that is used for enabling/disabling the backlight.
[all …]
Dpwm-backlight.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/pwm-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: pwm-backlight
10 - Lee Jones <lee@kernel.org>
11 - Daniel Thompson <daniel.thompson@linaro.org>
12 - Jingoo Han <jingoohan1@gmail.com>
15 - $ref: common.yaml#
19 const: pwm-backlight
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Dkinetic,ktd253.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/kinetic,ktd253.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Kinetic Technologies KTD253 and KTD259 one-wire backlight
10 - Linus Walleij <linus.walleij@linaro.org>
14 controlled by a single GPIO line. If you just turn on the backlight
15 it goes to maximum backlight then you can set the level of backlight
20 - $ref: common.yaml#
25 - enum:
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Dkinetic,ktd2801.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/kinetic,ktd2801.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Kinetic Technologies KTD2801 one-wire backlight
10 - Duje Mihanović <duje.mihanovic@skole.hr>
13 The Kinetic Technologies KTD2801 is a LED backlight driver controlled
14 by a single GPIO line. The driver can be controlled with a PWM signal
15 or by pulsing the GPIO line to set the backlight level. This is called
19 - $ref: common.yaml#
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Dsky81452-backlight.txt1 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.
9 See Documentation/devicetree/bindings/gpio/gpio.txt
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
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/linux-6.15/Documentation/devicetree/bindings/display/panel/
Dpanel-common.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/panel/panel-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
24 width-mm:
29 height-mm:
43 non-descriptive information. For instance an LCD panel in a system that
54 flip-horizontal:
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Dsamsung,s6d7aa0.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Samsung S6D7AA0 MIPI-DSI LCD panel controller
10 - Artur Weber <aweber.kernel@gmail.com>
13 - $ref: panel-common.yaml#
18 - enum:
20 - samsung,lsl080al02
22 - samsung,lsl080al03
24 - samsung,ltl101at01
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Dboe,himax8279d.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jerry Han <jerry.han.hq@gmail.com>
13 - $ref: panel-common.yaml#
18 - const: boe,himax8279d8p
19 - const: boe,himax8279d10p
24 backlight: true
25 enable-gpios: true
27 pp33-gpios:
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Dsharp,lq150x1lg11.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Peter Rosin <peda@axentia.se>
13 - $ref: panel-common.yaml#
19 power-supply: true
20 backlight: true
22 rlud-gpios:
25 GPIO for the RL/UD (rotate 180 degrees) pin.
26 If rlud-gpios and/or sellvds-gpios are not specified,
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Dnewvision,nv3051d.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
13 - Chris Morgan <macromorgan@hotmail.com>
16 - $ref: panel-common.yaml#
21 - enum:
22 - anbernic,rg351v-panel
23 - anbernic,rg353p-panel
24 - powkiddy,rk2023-panel
25 - const: newvision,nv3051d
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/linux-6.15/drivers/video/backlight/
Dktd253-backlight.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Backlight driver for the Kinetic KTD253
4 * Based on code and know-how from the Samsung GT-S7710
7 #include <linux/backlight.h>
10 #include <linux/gpio/consumer.h>
39 gpiod_set_value_cansleep(ktd253->gpiod, 1); in ktd253_backlight_set_max_ratio()
47 * These GPIO operations absolutely can NOT sleep so no _cansleep in ktd253_backlight_stepdown()
48 * suffixes, and no using GPIO expanders on slow buses for this! in ktd253_backlight_stepdown()
57 * top so we have the backlight in a known state. in ktd253_backlight_stepdown()
62 gpiod_set_value(ktd253->gpiod, 0); in ktd253_backlight_stepdown()
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Dgpio_backlight.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * gpio_backlight.c - Simple GPIO-controlled backlight
6 #include <linux/backlight.h>
8 #include <linux/gpio/consumer.h>
27 gpiod_set_value_cansleep(gbl->gpiod, backlight_get_brightness(bl)); in gpio_backlight_update_status()
37 return !gbl->dev || gbl->dev == display_dev; in gpio_backlight_controls_device()
48 struct device *dev = &pdev->dev; in gpio_backlight_probe()
50 struct device_node *of_node = dev->of_node; in gpio_backlight_probe()
58 return -ENOMEM; in gpio_backlight_probe()
61 gbl->dev = pdata->dev; in gpio_backlight_probe()
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DKconfig1 # 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
118 tristate "Himax HX-8357 LCD Driver"
121 If you have a HX-8357 LCD panel, say Y to enable its LCD control
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Dbd6107.c1 // SPDX-License-Identifier: GPL-2.0-only
10 #include <linux/backlight.h>
13 #include <linux/gpio/consumer.h>
71 struct backlight_device *backlight; member
78 return i2c_smbus_write_byte_data(bd->client, reg, data); in bd6107_write()
81 static int bd6107_backlight_update_status(struct backlight_device *backlight) in bd6107_backlight_update_status() argument
83 struct bd6107 *bd = bl_get_data(backlight); in bd6107_backlight_update_status()
84 int brightness = backlight_get_brightness(backlight); in bd6107_backlight_update_status()
93 gpiod_set_value(bd->reset, 1); in bd6107_backlight_update_status()
95 gpiod_set_value(bd->reset, 0); in bd6107_backlight_update_status()
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/linux-6.15/arch/arm/boot/dts/cirrus/
Dep7211-edb7211.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
4 #include <dt-bindings/gpio/gpio.h>
15 backlight: backlight { label
16 compatible = "pwm-backlight";
18 brightness-levels = <
22 default-brightness-level = <0x0>;
23 power-supply = <&blen>;
28 bits-per-pixel = <4>;
29 ac-prescale = <17>;
31 display-timings {
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/linux-6.15/drivers/gpu/drm/tilcdc/
Dtilcdc_panel.c1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <linux/backlight.h>
8 #include <linux/gpio/consumer.h>
28 struct backlight_device *backlight; member
47 struct backlight_device *backlight = panel_encoder->mod->backlight; in panel_encoder_dpms() local
48 struct gpio_desc *gpio = panel_encoder->mod->enable_gpio; in panel_encoder_dpms() local
50 if (backlight) { in panel_encoder_dpms()
51 backlight->props.power = mode == DRM_MODE_DPMS_ON ? in panel_encoder_dpms()
53 backlight_update_status(backlight); in panel_encoder_dpms()
56 if (gpio) in panel_encoder_dpms()
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/linux-6.15/arch/arm/boot/dts/nvidia/
Dtegra20-medcom-wide.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include "tegra20-tamonten.dtsi"
7 model = "Avionic Design Medcom-Wide board";
8 compatible = "ad,medcom-wide", "ad,tamonten", "nvidia,tegra20";
15 stdout-path = "serial0:115200n8";
35 interrupt-parent = <&gpio>;
38 gpio-controller;
39 #gpio-cells = <2>;
41 micdet-cfg = <0>;
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Dtegra30-apalis-eval.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
5 #include "tegra30-apalis.dtsi"
9 compatible = "toradex,apalis_t30-eval", "toradex,apalis_t30",
23 stdout-path = "serial0:115200n8";
46 hdmi-supply = <&reg_5v0>;
50 gpio@6000d000 {
52 pex-perst-n-hog {
53 gpio-hog;
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/linux-6.15/arch/arm64/boot/dts/rockchip/
Drk3399-puma-haikou-video-demo.dtso1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
5 * DEVKIT ADDON CAM-TS-A01
6 * https://embedded.cherry.de/product/development-kit/
8 * DT-overlay for the camera / DSI demo appliance for Haikou boards.
9 * In the flavour for use with a Puma system-on-module.
12 /dts-v1/;
15 #include <dt-bindings/clock/rk3399-cru.h>
16 #include <dt-bindings/gpio/gpio.h>
17 #include <dt-bindings/interrupt-controller/irq.h>
18 #include <dt-bindings/leds/common.h>
[all …]
Dpx30-ringneck-haikou-video-demo.dtso1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
5 * DEVKIT ADDON CAM-TS-A01
6 * https://embedded.cherry.de/product/development-kit/
8 * DT-overlay for the camera / DSI demo appliance for Haikou boards.
9 * In the flavour for use with a Ringneck system-on-module.
12 /dts-v1/;
15 #include <dt-bindings/clock/px30-cru.h>
16 #include <dt-bindings/gpio/gpio.h>
17 #include <dt-bindings/interrupt-controller/irq.h>
18 #include <dt-bindings/leds/common.h>
[all …]
/linux-6.15/arch/arm/boot/dts/nxp/imx/
Dimx6qdl-udoo.dtsi1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/gpio/gpio.h>
12 backlight = &backlight;
19 stdout-path = &uart2;
22 backlight: backlight { label
23 compatible = "gpio-backlight";
25 default-on;
29 gpio-poweroff {
30 compatible = "gpio-poweroff";
32 pinctrl-0 = <&pinctrl_power_off>;
[all …]
/linux-6.15/arch/arm64/boot/dts/freescale/
Dimx8mp-kontron-dl.dtso1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
6 /dts-v1/;
9 #include <dt-bindings/gpio/gpio.h>
10 #include "imx8mp-pinfunc.h"
13 model = "Kontron DL i.MX8MP OSM-S";
14 compatible = "kontron,imx8mp-bl-osm-s", "kontron,imx8mp-osm-s", "fsl,imx8mp";
16 backlight: backlight {
17 compatible = "pwm-backlight";
19 brightness-levels = <0 100>;
20 num-interpolated-steps = <100>;
[all …]
Dimx8mm-kontron-dl.dtso1 // SPDX-License-Identifier: GPL-2.0
6 /dts-v1/;
9 #include <dt-bindings/gpio/gpio.h>
10 #include "imx8mm-pinfunc.h"
13 compatible = "kontron,imx8mm-bl", "kontron,imx8mm-sl", "fsl,imx8mm";
15 backlight: backlight {
16 compatible = "pwm-backlight";
18 brightness-levels = <0 100>;
19 num-interpolated-steps = <100>;
20 default-brightness-level = <100>;
[all …]
/linux-6.15/arch/arm/boot/dts/rockchip/
Drk3288-veyron-edp.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
9 backlight_regulator: regulator-backlight {
10 compatible = "regulator-fixed";
11 enable-active-high;
12 gpio = <&gpio2 RK_PB4 GPIO_ACTIVE_HIGH>;
13 pinctrl-names = "default";
14 pinctrl-0 = <&bl_pwr_en>;
15 regulator-name = "backlight_regulator";
16 vin-supply = <&vcc33_sys>;
17 startup-delay-us = <15000>;
[all …]
/linux-6.15/arch/arm64/boot/dts/qcom/
Dsdm450-lenovo-tbx605f.dts1 // SPDX-License-Identifier: BSD-3-Clause
5 /dts-v1/;
14 chassis-type = "tablet";
17 #address-cells = <2>;
18 #size-cells = <2>;
22 compatible = "simple-framebuffer";
30 power-domains = <&gcc MDSS_GDSC>;
42 reserved-memory {
43 other-ext-region@0 {
44 no-map;
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