3  * Backlight driver for the Kinetic KTD253
39 	struct ktd253_backlight *ktd253 = bl_get_data(bl);  in ktd253_backlight_update_status()  local
42 	u16 current_ratio = ktd253->ratio;  in ktd253_backlight_update_status()
45 	dev_dbg(ktd253->dev, "new brightness/ratio: %d/32\n", brightness);  in ktd253_backlight_update_status()
54 		gpiod_set_value_cansleep(ktd253->gpiod, 0);  in ktd253_backlight_update_status()
57 		 * to actually switch the KTD253 off.  in ktd253_backlight_update_status()
60 		ktd253->ratio = 0;  in ktd253_backlight_update_status()
65 		gpiod_set_value_cansleep(ktd253->gpiod, 1);  in ktd253_backlight_update_status()
85 		gpiod_set_value(ktd253->gpiod, 0);  in ktd253_backlight_update_status()
87 		gpiod_set_value(ktd253->gpiod, 1);  in ktd253_backlight_update_status()
96 	ktd253->ratio = current_ratio;  in ktd253_backlight_update_status()
98 	dev_dbg(ktd253->dev, "new ratio set to %d/32\n", target_ratio);  in ktd253_backlight_update_status()
112 	struct ktd253_backlight *ktd253;  in ktd253_backlight_probe()  local
117 	ktd253 = devm_kzalloc(dev, sizeof(*ktd253), GFP_KERNEL);  in ktd253_backlight_probe()
118 	if (!ktd253)  in ktd253_backlight_probe()
120 	ktd253->dev = dev;  in ktd253_backlight_probe()
141 		/* This will be the default ratio when the KTD253 is enabled */  in ktd253_backlight_probe()
142 		ktd253->ratio = KTD253_MAX_RATIO;  in ktd253_backlight_probe()
144 		ktd253->ratio = 0;  in ktd253_backlight_probe()
146 	ktd253->gpiod = devm_gpiod_get(dev, "enable",  in ktd253_backlight_probe()
149 	if (IS_ERR(ktd253->gpiod)) {  in ktd253_backlight_probe()
150 		ret = PTR_ERR(ktd253->gpiod);  in ktd253_backlight_probe()
155 	gpiod_set_consumer_name(ktd253->gpiod, dev_name(dev));  in ktd253_backlight_probe()
157 	bl = devm_backlight_device_register(dev, dev_name(dev), dev, ktd253,  in ktd253_backlight_probe()
173 	ktd253->bl = bl;  in ktd253_backlight_probe()
181 	{ .compatible = "kinetic,ktd253" },
188 		.name = "ktd253-backlight",
196 MODULE_DESCRIPTION("Kinetic KTD253 Backlight Driver");
198 MODULE_ALIAS("platform:ktd253-backlight");