drivers/leds/leds-lm3530.c

189 static int lm3530_led_enable(struct lm3530_data *drvdata)
193 	if (drvdata->enable)
196 	ret = regulator_enable(drvdata->regulator);
198 		dev_err(drvdata->led_dev.dev, "Failed to enable vin:%d\n", ret);
202 	drvdata->enable = true;
206 static void lm3530_led_disable(struct lm3530_data *drvdata)
210 	if (!drvdata->enable)
213 	ret = regulator_disable(drvdata->regulator);
215 		dev_err(drvdata->led_dev.dev, "Failed to disable vin:%d\n",
220 	drvdata->enable = false;
223 static int lm3530_init_registers(struct lm3530_data *drvdata)
231 	struct lm3530_platform_data *pdata = drvdata->pdata;
232 	struct i2c_client *client = drvdata->client;
241 	switch (drvdata->mode) {
258 	if (drvdata->brightness)
259 		brightness = drvdata->brightness;
261 		brightness = drvdata->brightness = pdata->brt_val;
263 	if (brightness > drvdata->led_dev.max_brightness)
264 		brightness = drvdata->led_dev.max_brightness;
281 	ret = lm3530_led_enable(drvdata);
288 		    drvdata->mode == LM3530_BL_MODE_PWM) {
291 					drvdata->led_dev.max_brightness);
308 	struct lm3530_data *drvdata =
310 	struct lm3530_platform_data *pdata = drvdata->pdata;
314 	switch (drvdata->mode) {
317 		if (!drvdata->enable) {
318 			err = lm3530_init_registers(drvdata);
320 				dev_err(&drvdata->client->dev,
327 		err = i2c_smbus_write_byte_data(drvdata->client,
330 			dev_err(&drvdata->client->dev,
333 			drvdata->brightness = brt_val;
336 			lm3530_led_disable(drvdata);
353 	struct lm3530_data *drvdata;
356 	drvdata = container_of(led_cdev, struct lm3530_data, led_dev);
358 		if (drvdata->mode == mode_map[i].mode_val)
372 	struct lm3530_data *drvdata;
377 	drvdata = container_of(led_cdev, struct lm3530_data, led_dev);
378 	pwm = &drvdata->pdata->pwm_data;
386 	drvdata->mode = mode;
392 	err = lm3530_init_registers(drvdata);
398 	return sizeof(drvdata->mode);
411 	struct lm3530_data *drvdata;
430 	drvdata = devm_kzalloc(&client->dev, sizeof(struct lm3530_data),
432 	if (drvdata == NULL)
435 	drvdata->mode = pdata->mode;
436 	drvdata->client = client;
437 	drvdata->pdata = pdata;
438 	drvdata->brightness = LED_OFF;
439 	drvdata->enable = false;
440 	drvdata->led_dev.name = LM3530_LED_DEV;
441 	drvdata->led_dev.brightness_set = lm3530_brightness_set;
442 	drvdata->led_dev.max_brightness = MAX_BRIGHTNESS;
443 	drvdata->led_dev.groups = lm3530_groups;
445 	i2c_set_clientdata(client, drvdata);
447 	drvdata->regulator = devm_regulator_get(&client->dev, "vin");
448 	if (IS_ERR(drvdata->regulator)) {
450 		err = PTR_ERR(drvdata->regulator);
451 		drvdata->regulator = NULL;
455 	if (drvdata->pdata->brt_val) {
456 		err = lm3530_init_registers(drvdata);
463 	err = led_classdev_register(&client->dev, &drvdata->led_dev);
474 	struct lm3530_data *drvdata = i2c_get_clientdata(client);
476 	lm3530_led_disable(drvdata);
477 	led_classdev_unregister(&drvdata->led_dev);