| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-class-backlight | 1 What: /sys/class/backlight/<backlight>/scale
28 What: /sys/class/backlight/<backlight>/ambient_light_level
49 What: /sys/class/backlight/<backlight>/ambient_light_zone
57 backlight operates.
85 /sys/class/backlight/<backlight>/max_brightness to
86 /sys/class/backlight/<backlight>/brightness.
88 What: /sys/class/backlight/<backlight>/<ambient light zone>_max
94 on this <backlight>. Values are between 0 and 127. This file
106 daylight /sys/class/backlight/<backlight>/daylight_max
107 office /sys/class/backlight/<backlight>/office_max
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| H A D | sysfs-class-backlight-driver-lm3533 | 1 What: /sys/class/backlight/<backlight>/als_channel
10 0 out_current0 (backlight 0)
11 1 out_current1 (backlight 1)
14 What: /sys/class/backlight/<backlight>/als_en
21 What: /sys/class/backlight/<backlight>/id
26 Get the id of this backlight (0, 1).
28 What: /sys/class/backlight/<backlight>/linear
40 What: /sys/class/backlight/<backlight>/pwm
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| H A D | sysfs-class-backlight-lm3639 | 1 sysfs interface for Texas Instruments lm3639 backlight + flash led driver chip
4 What: /sys/class/backlight/<backlight>/bled_mode
9 (WO) Write to the backlight mapping mode. The backlight current
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| /linux/drivers/hid/ |
| H A D | hid-picolcd_backlight.c | 71 data->backlight = bdev; in picolcd_init_backlight()
78 struct backlight_device *bdev = data->backlight; in picolcd_exit_backlight()
80 data->backlight = NULL; in picolcd_exit_backlight()
86 if (!data->backlight) in picolcd_resume_backlight()
88 return picolcd_set_brightness(data->backlight); in picolcd_resume_backlight()
95 if (!data->backlight) in picolcd_suspend_backlight()
98 data->backlight->props.power = BACKLIGHT_POWER_OFF; in picolcd_suspend_backlight()
99 picolcd_set_brightness(data->backlight); in picolcd_suspend_backlight()
100 data->lcd_power = data->backlight->props.power = bl_power; in picolcd_suspend_backlight()
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| H A D | hid-apple.c | 103 u16 backlight; member
120 struct apple_sc_backlight *backlight; member
806 rep->backlight = value; in apple_backlight_set()
819 struct apple_sc_backlight *backlight = container_of(led_cdev, in apple_backlight_led_set() local
822 return apple_backlight_set(backlight->hdev, brightness, 0); in apple_backlight_led_set()
853 asc->backlight = devm_kzalloc(&hdev->dev, sizeof(*asc->backlight), GFP_KERNEL); in apple_backlight_init()
854 if (!asc->backlight) { in apple_backlight_init()
859 asc->backlight->hdev = hdev; in apple_backlight_init()
860 asc->backlight->cdev.name = "apple::kbd_backlight"; in apple_backlight_init()
861 asc->backlight->cdev.max_brightness = rep->backlight_on_max; in apple_backlight_init()
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| H A D | hid-corsair.c | 43 struct k90_led *backlight; member
430 drvdata->backlight = kzalloc_obj(struct k90_led); in k90_init_backlight()
431 if (!drvdata->backlight) { in k90_init_backlight()
445 drvdata->backlight->removed = false; in k90_init_backlight()
446 drvdata->backlight->cdev.name = name; in k90_init_backlight()
447 drvdata->backlight->cdev.max_brightness = 3; in k90_init_backlight()
448 drvdata->backlight->cdev.brightness_set = k90_brightness_set; in k90_init_backlight()
449 drvdata->backlight->cdev.brightness_get = k90_backlight_get; in k90_init_backlight()
450 INIT_WORK(&drvdata->backlight->work, k90_backlight_work); in k90_init_backlight()
451 ret = led_classdev_register(&dev->dev, &drvdata->backlight->cdev); in k90_init_backlight()
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| /linux/drivers/media/usb/gspca/gl860/ |
| H A D | gl860-ov2640.c | 175 sd->vcur.backlight = 32; in ov2640_init_settings()
186 sd->vmax.backlight = 64; in ov2640_init_settings()
239 sd->vold.backlight = -1; in ov2640_init_pre_alt()
339 s32 backlight = sd->vcur.backlight; in ov2640_camera_settings() local
350 if (backlight != sd->vold.backlight) { in ov2640_camera_settings()
352 if (backlight < 0 || backlight > sd->vmax.backlight) in ov2640_camera_settings()
353 backlight = 0; in ov2640_camera_settings()
357 ctrl_out(gspca_dev, 0x40, 1, 0x601e + backlight , 0x0024, in ov2640_camera_settings()
359 ctrl_out(gspca_dev, 0x40, 1, 0x601e + backlight - 10, 0x0025, in ov2640_camera_settings()
457 if (backlight != sd->vold.backlight) { in ov2640_camera_settings()
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| H A D | gl860-mi1320.c | 204 sd->vcur.backlight = 0; in mi1320_init_settings()
216 sd->vmax.backlight = 2; in mi1320_init_settings()
281 sd->vold.backlight = -1; in mi1320_init_pre_alt()
367 s32 backlight = sd->vcur.backlight; in mi1320_camera_settings() local
482 if (backlight != sd->vold.backlight) { in mi1320_camera_settings()
483 sd->vold.backlight = backlight; in mi1320_camera_settings()
484 if (backlight < 0 || backlight > sd->vmax.backlight) in mi1320_camera_settings()
485 backlight = 0; in mi1320_camera_settings()
487 backlight = tbl_backlight[backlight]; in mi1320_camera_settings()
492 ctrl_out(gspca_dev, 0x40, 1, 0xba80 + backlight, 0x00f1, in mi1320_camera_settings()
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| /linux/Documentation/devicetree/bindings/mfd/ |
| H A D | sky81452.txt | 8 - backlight : container node for backlight following the binding
9 in leds/backlight/sky81452-backlight.txt
19 backlight {
20 compatible = "skyworks,sky81452-backlight";
21 name = "pwm-backlight";
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| H A D | ti-lmu.txt | 47 - backlight: All LMU devices have backlight child nodes.
60 [1] ../leds/backlight/ti-lmu-backlight.txt
106 backlight {
107 compatible = "ti,lm3631-backlight";
148 backlight {
149 compatible = "ti,lm3632-backlight";
152 pwm-names = "lmu-backlight";
167 backlight {
168 compatible = "ti,lm3633-backlight";
212 backlight {
[all …]
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| /linux/tools/arch/x86/dell-uart-backlight-emulator/ |
| H A D | Makefile | 4 dell-uart-backlight-emulator: dell-uart-backlight-emulator.c
15 @rm -f dell-uart-backlight-emulator
17 install : dell-uart-backlight-emulator
19 install -m 755 -p dell-uart-backlight-emulator $(DESTDIR)$(BINDIR)/dell-uart-backlight-emulator
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| H A D | README | 1 Emulator for DELL0501 UART attached backlight controller
4 Dell All In One (AIO) models released after 2017 use a backlight controller
13 the backlight controller board attached.
16 the drivers/platform/x86/dell/dell-uart-backlight.c driver without access
32 ./dell-uart-backlight-emulator <path-to-/dev/tty*S#-for-second-port>
36 ./dell-uart-backlight-emulator /dev/ttyUSB0
38 And then (re)load the dell-uart-backlight driver:
40 sudo rmmod dell-uart-backlight; sudo modprobe dell-uart-backlight dyndbg
44 should be a /sys/class/backlight/dell_uart_backlight/ directory now
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| /linux/Documentation/devicetree/bindings/leds/backlight/ |
| 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'.
22 backlight {
23 compatible = "skyworks,sky81452-backlight";
24 name = "pwm-backlight";
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| H A D | 88pm860x.txt | 1 88pm860x-backlight bindings
4 - marvell,88pm860x-iset: Current supplies on backlight device.
5 - marvell,88pm860x-pwm: PWM frequency on backlight device.
10 backlight-0 {
14 backlight-2 {
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| /linux/Documentation/gpu/ |
| H A D | backlight.rst | 5 .. kernel-doc:: drivers/video/backlight/backlight.c
8 .. kernel-doc:: include/linux/backlight.h
11 .. kernel-doc:: drivers/video/backlight/backlight.c
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| /linux/Documentation/firmware-guide/acpi/ |
| H A D | video_extension.rst | 14 The ACPI video driver does 3 things regarding backlight control.
16 Export a sysfs interface for user space to control backlight level
20 command line is not present, the driver will register a backlight device
21 and set the required backlight operation structure for it for the sysfs
23 directory named acpi_videoX under /sys/class/backlight.
25 The backlight sysfs interface has a standard definition here:
26 Documentation/ABI/stable/sysfs-class-backlight.
42 Note that ACPI video backlight driver will always use index for
108 Once user space tool receives this event, it can modify the backlight
111 Change backlight level in the kernel
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| /linux/arch/arm64/boot/dts/rockchip/ |
| H A D | px30-engicam-edimm2.2.dtsi | 10 backlight: backlight { label
11 compatible = "pwm-backlight";
17 backlight = <&backlight>;
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| H A D | px30-engicam-px30-core-ctouch2-of10.dts | 18 backlight: backlight { label
19 compatible = "pwm-backlight";
29 backlight = <&backlight>;
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| /linux/arch/arm/boot/dts/microchip/ |
| H A D | at91sam9x5dm.dtsi | 12 backlight: backlight { label
13 compatible = "pwm-backlight";
23 regulator-name = "backlight-power-supply";
31 backlight = <&backlight>;
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| H A D | at91-dvk_su60_somc_lcm.dtsi | 11 backlight: backlight { label
12 compatible = "pwm-backlight";
21 backlight = <&backlight>;
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| /linux/drivers/platform/x86/ |
| H A D | msi-wmi.c | 85 static struct backlight_device *backlight; variable
203 (backlight || in msi_wmi_notify()
223 backlight = backlight_device_register(DRV_NAME, NULL, NULL, in msi_wmi_backlight_setup()
226 if (IS_ERR(backlight)) in msi_wmi_backlight_setup()
227 return PTR_ERR(backlight); in msi_wmi_backlight_setup()
231 backlight_device_unregister(backlight); in msi_wmi_backlight_setup()
235 backlight->props.brightness = err; in msi_wmi_backlight_setup()
307 if (!event_wmi && !backlight) { in msi_wmi_init()
329 backlight_device_unregister(backlight); in msi_wmi_exit()
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| /linux/Documentation/devicetree/bindings/leds/ |
| H A D | leds-lm36274.txt | 4 The backlight boost provides the power to bias four parallel LED strings with
14 Required backlight properties:
16 "ti,lm36274-backlight"
24 Optional backlight properties:
70 backlight {
73 compatible = "ti,lm36274-backlight";
79 linux,default-trigger = "backlight";
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| /linux/arch/arm64/boot/dts/qcom/ |
| H A D | x1e78100-lenovo-thinkpad-t14s.dts | 13 backlight: backlight { label
14 compatible = "pwm-backlight";
41 backlight = <&backlight>;
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| H A D | x1p42100-asus-zenbook-a14-lcd.dts | 15 backlight: backlight { label
16 compatible = "pwm-backlight";
43 backlight = <&backlight>;
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| /linux/arch/arm/boot/dts/ti/omap/ |
| H A D | motorola-mapphone-xt8xx.dtsi | 7 backlight: backlight { label
8 compatible = "led-backlight";
44 backlight = <&backlight>;
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