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/Linux-v6.1/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 bindings
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 bindings
10 - Lee Jones <lee@kernel.org>
11 - Daniel Thompson <daniel.thompson@linaro.org>
12 - Jingoo Han <jingoohan1@gmail.com>
16 const: pwm-backlight
21 pwm-names: true
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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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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-v6.1/arch/arm/mach-s3c/
Ddev-backlight-s3c64xx.c1 // SPDX-License-Identifier: GPL-2.0
6 // Common infrastructure for PWM Backlight for Samsung boards
8 #include <linux/gpio.h>
15 #include "gpio-cfg.h"
17 #include "backlight-s3c64xx.h"
27 struct platform_pwm_backlight_data *pdata = dev->platform_data; in samsung_bl_init()
30 struct samsung_bl_gpio_info *bl_gpio_info = drvdata->gpio_info; in samsung_bl_init()
32 ret = gpio_request(bl_gpio_info->no, "Backlight"); in samsung_bl_init()
34 printk(KERN_ERR "failed to request GPIO for LCD Backlight\n"); in samsung_bl_init()
38 /* Configure GPIO pin with specific GPIO function for PWM timer */ in samsung_bl_init()
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/Linux-v6.1/Documentation/devicetree/bindings/display/
Dsitronix,st7735r.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - David Lechner <david@lechnology.com>
17 - $ref: panel/panel-common.yaml#
18 - $ref: /schemas/spi/spi-peripheral-props.yaml#
23 - description:
26 - enum:
27 - jianda,jd-t18003-t01
28 - const: sitronix,st7735r
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Dilitek,ili9486.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
17 - $ref: panel/panel-common.yaml#
22 - enum:
24 - waveshare,rpi-lcd-35
26 - ozzmaker,piscreen
27 - const: ilitek,ili9486
29 spi-max-frequency:
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/Linux-v6.1/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
55 panel-timing:
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Dilitek,ili9163.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Daniel Mack <daniel@zonque.org>
17 - $ref: panel-common.yaml#
22 - enum:
23 - newhaven,1.8-128160EF
24 - const: ilitek,ili9163
26 spi-max-frequency:
29 dc-gpios:
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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
21 backlight: true
22 enable-gpios: true
25 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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Dsamsung,lms397kf04.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 named DB7430 with a separate backlight controller.
13 - Linus Walleij <linus.walleij@linaro.org>
16 - $ref: panel-common.yaml#
24 reset-gpios: true
26 vci-supply:
30 vccio-supply:
34 backlight: true
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/Linux-v6.1/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>
11 #include <linux/gpio/consumer.h>
40 gpiod_set_value_cansleep(ktd253->gpiod, 1); in ktd253_backlight_set_max_ratio()
48 * These GPIO operations absolutely can NOT sleep so no _cansleep in ktd253_backlight_stepdown()
49 * suffixes, and no using GPIO expanders on slow buses for this! in ktd253_backlight_stepdown()
58 * top so we have the backlight in a known state. in ktd253_backlight_stepdown()
63 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>
9 #include <linux/gpio/consumer.h>
28 gpiod_set_value_cansleep(gbl->gpiod, backlight_get_brightness(bl)); in gpio_backlight_update_status()
38 return gbl->fbdev == NULL || gbl->fbdev == info->dev; in gpio_backlight_check_fb()
49 struct device *dev = &pdev->dev; in gpio_backlight_probe()
51 struct device_node *of_node = dev->of_node; in gpio_backlight_probe()
59 return -ENOMEM; in gpio_backlight_probe()
62 gbl->fbdev = pdata->fbdev; in gpio_backlight_probe()
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Dbd6107.c1 // SPDX-License-Identifier: GPL-2.0-only
10 #include <linux/backlight.h>
14 #include <linux/gpio/consumer.h>
72 struct backlight_device *backlight; member
79 return i2c_smbus_write_byte_data(bd->client, reg, data); in bd6107_write()
82 static int bd6107_backlight_update_status(struct backlight_device *backlight) in bd6107_backlight_update_status() argument
84 struct bd6107 *bd = bl_get_data(backlight); in bd6107_backlight_update_status()
85 int brightness = backlight_get_brightness(backlight); in bd6107_backlight_update_status()
94 gpiod_set_value(bd->reset, 1); in bd6107_backlight_update_status()
96 gpiod_set_value(bd->reset, 0); in bd6107_backlight_update_status()
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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
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/arch/arm/boot/dts/
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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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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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>;
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Drk3288-veyron-edp.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
9 backlight_regulator: backlight-regulator {
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>;
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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>;
80 clock-frequency = <400000>;
82 pcie-switch@58 {
102 clock-frequency = <400000>;
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Dtegra30-apalis-v1.1-eval.dts1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
5 #include "tegra30-apalis-v1.1.dtsi"
9 compatible = "toradex,apalis_t30-v1.1-eval", "toradex,apalis_t30-eval",
10 "toradex,apalis_t30-v1.1", "toradex,apalis_t30",
24 stdout-path = "serial0:115200n8";
47 hdmi-supply = <&reg_5v0>;
81 clock-frequency = <400000>;
83 pcie-switch@58 {
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Dtegra30-colibri-eval-v3.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
5 #include "tegra30-colibri.dtsi"
9 compatible = "toradex,colibri_t30-eval-v3", "toradex,colibri_t30",
22 stdout-path = "serial0:115200n8";
35 hdmi-supply = <&reg_5v0>;
39 /* Colibri UART-A */
44 /* Colibri UART-C */
49 /* Colibri UART-B */
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/Linux-v6.1/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>
29 struct backlight_device *backlight; member
48 struct backlight_device *backlight = panel_encoder->mod->backlight; in panel_encoder_dpms() local
49 struct gpio_desc *gpio = panel_encoder->mod->enable_gpio; in panel_encoder_dpms() local
51 if (backlight) { in panel_encoder_dpms()
52 backlight->props.power = mode == DRM_MODE_DPMS_ON ? in panel_encoder_dpms()
54 backlight_update_status(backlight); in panel_encoder_dpms()
57 if (gpio) in panel_encoder_dpms()
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/Linux-v6.1/include/linux/mfd/
Dlp8788.h1 /* SPDX-License-Identifier: GPL-2.0-only */
13 #include <linux/gpio.h>
18 #define LP8788_DEV_BUCK "lp8788-buck"
19 #define LP8788_DEV_DLDO "lp8788-dldo"
20 #define LP8788_DEV_ALDO "lp8788-aldo"
21 #define LP8788_DEV_CHARGER "lp8788-charger"
22 #define LP8788_DEV_RTC "lp8788-rtc"
23 #define LP8788_DEV_BACKLIGHT "lp8788-backlight"
24 #define LP8788_DEV_VIBRATOR "lp8788-vibrator"
25 #define LP8788_DEV_KEYLED "lp8788-keyled"
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