1 // SPDX-License-Identifier: GPL-2.0-only
3  * leds-max8997.c - LED class driver for MAX8997 LEDs.
14 #include <linux/mfd/max8997-private.h>
51 	struct i2c_client *client = led->iodev->i2c;  in max8997_led_set_mode()
57 		val = led->id ?  in max8997_led_set_mode()
59 		led->cdev.max_brightness = MAX8997_LED_FLASH_MAX_BRIGHTNESS;  in max8997_led_set_mode()
63 		val = led->id ?  in max8997_led_set_mode()
65 		led->cdev.max_brightness = MAX8997_LED_MOVIE_MAX_BRIGHTNESS;  in max8997_led_set_mode()
70 		val = led->id ?  in max8997_led_set_mode()
72 		led->cdev.max_brightness = MAX8997_LED_FLASH_MAX_BRIGHTNESS;  in max8997_led_set_mode()
77 		val = led->id ?  in max8997_led_set_mode()
79 		led->cdev.max_brightness = MAX8997_LED_MOVIE_MAX_BRIGHTNESS;  in max8997_led_set_mode()
81 	default:  in max8997_led_set_mode()
82 		led->cdev.max_brightness = MAX8997_LED_NONE_MAX_BRIGHTNESS;  in max8997_led_set_mode()
90 			dev_err(led->iodev->dev,  in max8997_led_set_mode()
94 	led->led_mode = mode;  in max8997_led_set_mode()
100 	struct i2c_client *client = led->iodev->i2c;  in max8997_led_enable()
103 	if (led->enabled == enable)  in max8997_led_enable()
110 		dev_err(led->iodev->dev,  in max8997_led_enable()
113 	led->enabled = enable;  in max8997_led_enable()
120 	struct i2c_client *client = led->iodev->i2c;  in max8997_led_set_current()
123 	switch (led->led_mode) {  in max8997_led_set_current()
128 		reg = led->id ? MAX8997_REG_FLASH2_CUR : MAX8997_REG_FLASH1_CUR;  in max8997_led_set_current()
136 	default:  in max8997_led_set_current()
143 			dev_err(led->iodev->dev,  in max8997_led_set_current()
171 	mutex_lock(&led->mutex);  in max8997_led_show_mode()
173 	switch (led->led_mode) {  in max8997_led_show_mode()
186 	default:  in max8997_led_show_mode()
191 	mutex_unlock(&led->mutex);  in max8997_led_show_mode()
205 	mutex_lock(&led->mutex);  in max8997_led_store_mode()
220 	mutex_unlock(&led->mutex);  in max8997_led_store_mode()
235 	struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent);  in max8997_led_probe()
236 	struct max8997_platform_data *pdata = dev_get_platdata(iodev->dev);  in max8997_led_probe()
242 		dev_err(&pdev->dev, "no platform data\n");  in max8997_led_probe()
243 		return -ENODEV;  in max8997_led_probe()
246 	led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);  in max8997_led_probe()
248 		return -ENOMEM;  in max8997_led_probe()
250 	led->id = pdev->id;  in max8997_led_probe()
251 	snprintf(name, sizeof(name), "max8997-led%d", pdev->id);  in max8997_led_probe()
253 	led->cdev.name = name;  in max8997_led_probe()
254 	led->cdev.brightness_set = max8997_led_brightness_set;  in max8997_led_probe()
255 	led->cdev.flags |= LED_CORE_SUSPENDRESUME;  in max8997_led_probe()
256 	led->cdev.brightness = 0;  in max8997_led_probe()
257 	led->cdev.groups = max8997_groups;  in max8997_led_probe()
258 	led->iodev = iodev;  in max8997_led_probe()
260 	/* initialize mode and brightness according to platform_data */  in max8997_led_probe()
261 	if (pdata->led_pdata) {  in max8997_led_probe()
262 		u8 mode = 0, brightness = 0;  in max8997_led_probe()  local
264 		mode = pdata->led_pdata->mode[led->id];  in max8997_led_probe()
265 		brightness = pdata->led_pdata->brightness[led->id];  in max8997_led_probe()
269 		if (brightness > led->cdev.max_brightness)  in max8997_led_probe()
270 			brightness = led->cdev.max_brightness;  in max8997_led_probe()
271 		max8997_led_set_current(led, brightness);  in max8997_led_probe()
272 		led->cdev.brightness = brightness;  in max8997_led_probe()
278 	mutex_init(&led->mutex);  in max8997_led_probe()
280 	ret = devm_led_classdev_register(&pdev->dev, &led->cdev);  in max8997_led_probe()
289 		.name  = "max8997-led",
299 MODULE_ALIAS("platform:max8997-led");