1 // SPDX-License-Identifier: GPL-2.0-only
33 /* LED Driver Output State, determine the source that drives LED outputs */
34 #define LEDOUT_OFF		0x0	/* Output LOW */
35 #define LEDOUT_ON		0x1	/* Output HI-Z */
43 	bool active;  member
86 tlc591xx_set_ledout(struct tlc591xx_priv *priv, struct tlc591xx_led *led,  in tlc591xx_set_ledout()  argument
89 	unsigned int i = (led->led_no % 4) * 2;  in tlc591xx_set_ledout()
91 	unsigned int addr = priv->reg_ledout_offset + (led->led_no >> 2);  in tlc591xx_set_ledout()
95 	return regmap_update_bits(priv->regmap, addr, mask, val);  in tlc591xx_set_ledout()
99 tlc591xx_set_pwm(struct tlc591xx_priv *priv, struct tlc591xx_led *led,  in tlc591xx_set_pwm()  argument
102 	u8 pwm = TLC591XX_REG_PWM(led->led_no);  in tlc591xx_set_pwm()
104 	return regmap_write(priv->regmap, pwm, brightness);  in tlc591xx_set_pwm()
111 	struct tlc591xx_led *led = ldev_to_led(led_cdev);  in tlc591xx_brightness_set()  local
112 	struct tlc591xx_priv *priv = led->priv;  in tlc591xx_brightness_set()
117 		err = tlc591xx_set_ledout(priv, led, LEDOUT_OFF);  in tlc591xx_brightness_set()
120 		err = tlc591xx_set_ledout(priv, led, LEDOUT_ON);  in tlc591xx_brightness_set()
123 		err = tlc591xx_set_ledout(priv, led, LEDOUT_DIM);  in tlc591xx_brightness_set()
125 			err = tlc591xx_set_pwm(priv, led, brightness);  in tlc591xx_brightness_set()
150 	struct device *dev = &client->dev;  in tlc591xx_probe()
157 		return -ENODEV;  in tlc591xx_probe()
161 		return -ENODEV;  in tlc591xx_probe()
164 	if (!count || count > tlc591xx->max_leds)  in tlc591xx_probe()
165 		return -EINVAL;  in tlc591xx_probe()
169 		return -ENOMEM;  in tlc591xx_probe()
171 	priv->regmap = devm_regmap_init_i2c(client, &tlc591xx_regmap);  in tlc591xx_probe()
172 	if (IS_ERR(priv->regmap)) {  in tlc591xx_probe()
173 		err = PTR_ERR(priv->regmap);  in tlc591xx_probe()
177 	priv->reg_ledout_offset = tlc591xx->reg_ledout_offset;  in tlc591xx_probe()
181 	err = tlc591xx_set_mode(priv->regmap, MODE2_DIM);  in tlc591xx_probe()
186 		struct tlc591xx_led *led;  in tlc591xx_probe()  local
195 		if (reg < 0 || reg >= tlc591xx->max_leds ||  in tlc591xx_probe()
196 		    priv->leds[reg].active)  in tlc591xx_probe()
197 			return -EINVAL;  in tlc591xx_probe()
199 		led = &priv->leds[reg];  in tlc591xx_probe()
201 		led->active = true;  in tlc591xx_probe()
202 		led->priv = priv;  in tlc591xx_probe()
203 		led->led_no = reg;  in tlc591xx_probe()
204 		led->ldev.brightness_set_blocking = tlc591xx_brightness_set;  in tlc591xx_probe()
205 		led->ldev.max_brightness = TLC591XX_MAX_BRIGHTNESS;  in tlc591xx_probe()
206 		err = devm_led_classdev_register_ext(dev, &led->ldev,  in tlc591xx_probe()
210 					     "couldn't register LED %s\n",  in tlc591xx_probe()
211 					     led->ldev.name);  in tlc591xx_probe()
236 MODULE_DESCRIPTION("TLC591XX LED driver");