1 // SPDX-License-Identifier: GPL-2.0-or-later
48 	if (data->reset_gpio) {  in lm3509_reset()
49 		gpiod_set_value(data->reset_gpio, 1);  in lm3509_reset()
51 		gpiod_set_value(data->reset_gpio, 0);  in lm3509_reset()
56 static int lm3509_update_status(struct backlight_device *bl,  in lm3509_update_status()  argument
59 	struct lm3509_bl *data = bl_get_data(bl);  in lm3509_update_status()
63 	ret = regmap_write(data->regmap, br_reg, backlight_get_brightness(bl));  in lm3509_update_status()
67 	en = !backlight_is_blank(bl);  in lm3509_update_status()
68 	return regmap_update_bits(data->regmap, REG_GP, en_mask,  in lm3509_update_status()
72 static int lm3509_main_update_status(struct backlight_device *bl)  in lm3509_main_update_status()  argument
74 	return lm3509_update_status(bl, BIT(REG_GP_ENM_BIT), REG_BMAIN);  in lm3509_main_update_status()
82 static int lm3509_sub_update_status(struct backlight_device *bl)  in lm3509_sub_update_status()  argument
84 	return lm3509_update_status(bl, BIT(REG_GP_ENS_BIT), REG_BSUB);  in lm3509_sub_update_status()
101 	const char *label = led_data->label;  in lm3509_backlight_register()
102 	char name[64];  in lm3509_backlight_register()  local
106 	props.brightness = led_data->brightness;  in lm3509_backlight_register()
107 	props.max_brightness = led_data->max_brightness;  in lm3509_backlight_register()
111 		snprintf(name, sizeof(name), "lm3509-%s-%s", dev_name(dev),  in lm3509_backlight_register()
113 		label = name;  in lm3509_backlight_register()
136 	num_sources = of_property_count_u32_elems(node, "led-sources");  in lm3509_parse_led_sources()
140 		return -EINVAL;  in lm3509_parse_led_sources()
142 	ret = of_property_read_u32_array(node, "led-sources", sources,  in lm3509_parse_led_sources()
149 			return -EINVAL;  in lm3509_parse_led_sources()
162 	for_each_child_of_node_scoped(dev->of_node, child) {  in lm3509_parse_dt_node()
172 			return -EINVAL;  in lm3509_parse_dt_node()
175 		ld->led_sources = lm3509_parse_led_sources(child, BIT(reg));  in lm3509_parse_dt_node()
176 		if (ld->led_sources < 0)  in lm3509_parse_dt_node()
177 			return ld->led_sources;  in lm3509_parse_dt_node()
185 		if (ld->led_sources != (ld->led_sources & valid_led_sources))  in lm3509_parse_dt_node()
186 			return -EINVAL;  in lm3509_parse_dt_node()
188 		if (seen_led_sources & ld->led_sources)  in lm3509_parse_dt_node()
189 			return -EINVAL;  in lm3509_parse_dt_node()
191 		seen_led_sources |= ld->led_sources;  in lm3509_parse_dt_node()
193 		ld->label = NULL;  in lm3509_parse_dt_node()
194 		of_property_read_string(child, "label", &ld->label);  in lm3509_parse_dt_node()
196 		ld->max_brightness = LM3509_MAX_BRIGHTNESS;  in lm3509_parse_dt_node()
197 		of_property_read_u32(child, "max-brightness",  in lm3509_parse_dt_node()
198 				     &ld->max_brightness);  in lm3509_parse_dt_node()
199 		ld->max_brightness =  in lm3509_parse_dt_node()
200 			min_t(u32, ld->max_brightness, LM3509_MAX_BRIGHTNESS);  in lm3509_parse_dt_node()
202 		ld->brightness = LM3509_DEF_BRIGHTNESS;  in lm3509_parse_dt_node()
203 		of_property_read_u32(child, "default-brightness",  in lm3509_parse_dt_node()
204 				     &ld->brightness);  in lm3509_parse_dt_node()
205 		ld->brightness = min_t(u32, ld->brightness, ld->max_brightness);  in lm3509_parse_dt_node()
214 	struct device *dev = &client->dev;  in lm3509_probe()
221 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {  in lm3509_probe()
223 		return -EOPNOTSUPP;  in lm3509_probe()
228 		return -ENOMEM;  in lm3509_probe()
230 	data->regmap = devm_regmap_init_i2c(client, &lm3509_regmap);  in lm3509_probe()
231 	if (IS_ERR(data->regmap))  in lm3509_probe()
232 		return PTR_ERR(data->regmap);  in lm3509_probe()
235 	data->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in lm3509_probe()
236 	if (IS_ERR(data->reset_gpio))  in lm3509_probe()
237 		return dev_err_probe(dev, PTR_ERR(data->reset_gpio),  in lm3509_probe()
247 	oled_mode = of_property_read_bool(dev->of_node, "ti,oled-mode");  in lm3509_probe()
249 	if (!of_property_read_u32(dev->of_node,  in lm3509_probe()
250 				  "ti,brightness-rate-of-change-us",  in lm3509_probe()
279 	ret = regmap_write(data->regmap, REG_GP, reg_gp_val);  in lm3509_probe()
284 		data->bl_main = lm3509_backlight_register(  in lm3509_probe()
286 		if (IS_ERR(data->bl_main)) {  in lm3509_probe()
288 				dev, PTR_ERR(data->bl_main),  in lm3509_probe()
294 		data->bl_sub = lm3509_backlight_register(  in lm3509_probe()
296 		if (IS_ERR(data->bl_sub)) {  in lm3509_probe()
298 				dev, PTR_ERR(data->bl_sub),  in lm3509_probe()
310 	regmap_write(data->regmap, REG_GP, 0x00);  in lm3509_remove()
331 		.name = LM3509_NAME,