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/linux/drivers/video/backlight/
H A Dktd253-backlight.c3 * Backlight driver for the Kinetic KTD253
37 static void ktd253_backlight_set_max_ratio(struct ktd253_backlight *ktd253) in ktd253_backlight_set_max_ratio() argument
39 gpiod_set_value_cansleep(ktd253->gpiod, 1); in ktd253_backlight_set_max_ratio()
44 static int ktd253_backlight_stepdown(struct ktd253_backlight *ktd253) in ktd253_backlight_stepdown() argument
62 gpiod_set_value(ktd253->gpiod, 0); in ktd253_backlight_stepdown()
64 gpiod_set_value(ktd253->gpiod, 1); in ktd253_backlight_stepdown()
67 dev_err(ktd253->dev, "PCM on backlight took too long (%llu ns)\n", ns); in ktd253_backlight_stepdown()
76 struct ktd253_backlight *ktd253 = bl_get_data(bl); in ktd253_backlight_update_status() local
79 u16 current_ratio = ktd253->ratio; in ktd253_backlight_update_status()
82 dev_dbg(ktd253->dev, "new brightness/ratio: %d/32\n", brightness); in ktd253_backlight_update_status()
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H A DKconfig179 tristate "Backlight Driver for Kinetic KTD253"
182 Say y to enabled the backlight driver for the Kinetic KTD253
H A DMakefile36 obj-$(CONFIG_BACKLIGHT_KTD253) += ktd253-backlight.o
/linux/Documentation/devicetree/bindings/leds/backlight/
H A Dkinetic,ktd253.yaml4 $id: http://devicetree.org/schemas/leds/backlight/kinetic,ktd253.yaml#
7 title: Kinetic Technologies KTD253 and KTD259 one-wire backlight
13 The Kinetic Technologies KTD253 and KTD259 are white LED backlights
26 - kinetic,ktd253
46 compatible = "kinetic,ktd253";
/linux/arch/arm/boot/dts/st/
H A Dste-ux500-samsung-skomer.dts142 ktd253: backlight { label
143 compatible = "kinetic,ktd253";
488 backlight = <&ktd253>;
H A Dste-ux500-samsung-kyle.dts163 ktd253: backlight { label
164 compatible = "kinetic,ktd253";
502 backlight = <&ktd253>;
/linux/
H A DMAINTAINERS12883 KTD253 BACKLIGHT DRIVER
12886 F: Documentation/devicetree/bindings/leds/backlight/kinetic,ktd253.yaml
12887 F: drivers/video/backlight/ktd253-backlight.c