1 // SPDX-License-Identifier: GPL-2.0-or-later
5  * Copyright 2009-2010 Analog Devices Inc.
33 #define ADP8860_BLMX1 0x09 /* Backlight (Brightness Level 1-daylight) maximum current */
34 #define ADP8860_BLDM1 0x0A /* Backlight (Brightness Level 1-daylight) dim current */
35 #define ADP8860_BLMX2 0x0B /* Backlight (Brightness Level 2-office) maximum current */
36 #define ADP8860_BLDM2 0x0C /* Backlight (Brightness Level 2-office) dim current */
37 #define ADP8860_BLMX3 0x0D /* Backlight (Brightness Level 3-dark) maximum current */
38 #define ADP8860_BLDM3 0x0E /* Backlight (Brightness Level 3-dark) dim current */
57 #define ADP8860_PH1LEVL 0x21 /* First phototransistor ambient light level-low byte register */
58 #define ADP8860_PH1LEVH 0x22 /* First phototransistor ambient light level-high byte register */
59 #define ADP8860_PH2LEVL 0x23 /* Second phototransistor ambient light level-low byte register */
60 #define ADP8860_PH2LEVH 0x24 /* Second phototransistor ambient light level-high byte register */
88 #define ALS_CCFG_VAL(filt)	((0x7 & filt) << 5)  argument
125 		dev_err(&client->dev, "failed reading at 0x%02x\n", reg);  in adp8860_read()
144 	mutex_lock(&data->lock);  in adp8860_set_bits()
153 	mutex_unlock(&data->lock);  in adp8860_set_bits()
163 	mutex_lock(&data->lock);  in adp8860_clr_bits()
172 	mutex_unlock(&data->lock);  in adp8860_clr_bits()
184 	adp8860_write(led->client, ADP8860_ISC1 - led->id + 1,  in adp8860_led_work()
185 			 led->new_brightness >> 1);  in adp8860_led_work()
194 	led->new_brightness = value;  in adp8860_led_set()
195 	schedule_work(&led->work);  in adp8860_led_set()
200 	struct i2c_client *client = led->client;  in adp8860_led_setup()
203 	ret = adp8860_write(client, ADP8860_ISC1 - led->id + 1, 0);  in adp8860_led_setup()
204 	ret |= adp8860_set_bits(client, ADP8860_ISCC, 1 << (led->id - 1));  in adp8860_led_setup()
206 	if (led->id > 4)  in adp8860_led_setup()
208 				(led->flags & 0x3) << ((led->id - 5) * 2));  in adp8860_led_setup()
211 				(led->flags & 0x3) << ((led->id - 1) * 2));  in adp8860_led_setup()
219 		dev_get_platdata(&client->dev);  in adp8860_led_probe()
225 	led = devm_kcalloc(&client->dev, pdata->num_leds, sizeof(*led),  in adp8860_led_probe()
228 		return -ENOMEM;  in adp8860_led_probe()
230 	ret = adp8860_write(client, ADP8860_ISCFR, pdata->led_fade_law);  in adp8860_led_probe()
232 			(pdata->led_on_time & 0x3) << 6);  in adp8860_led_probe()
234 			FADE_VAL(pdata->led_fade_in, pdata->led_fade_out));  in adp8860_led_probe()
237 		dev_err(&client->dev, "failed to write\n");  in adp8860_led_probe()
241 	for (i = 0; i < pdata->num_leds; ++i) {  in adp8860_led_probe()
242 		cur_led = &pdata->leds[i];  in adp8860_led_probe()
245 		led_dat->id = cur_led->flags & ADP8860_FLAG_LED_MASK;  in adp8860_led_probe()
247 		if (led_dat->id > 7 || led_dat->id < 1) {  in adp8860_led_probe()
248 			dev_err(&client->dev, "Invalid LED ID %d\n",  in adp8860_led_probe()
249 				led_dat->id);  in adp8860_led_probe()
250 			ret = -EINVAL;  in adp8860_led_probe()
254 		if (pdata->bl_led_assign & (1 << (led_dat->id - 1))) {  in adp8860_led_probe()
255 			dev_err(&client->dev, "LED %d used by Backlight\n",  in adp8860_led_probe()
256 				led_dat->id);  in adp8860_led_probe()
257 			ret = -EBUSY;  in adp8860_led_probe()
261 		led_dat->cdev.name = cur_led->name;  in adp8860_led_probe()
262 		led_dat->cdev.default_trigger = cur_led->default_trigger;  in adp8860_led_probe()
263 		led_dat->cdev.brightness_set = adp8860_led_set;  in adp8860_led_probe()
264 		led_dat->cdev.brightness = LED_OFF;  in adp8860_led_probe()
265 		led_dat->flags = cur_led->flags >> FLAG_OFFT_SHIFT;  in adp8860_led_probe()
266 		led_dat->client = client;  in adp8860_led_probe()
267 		led_dat->new_brightness = LED_OFF;  in adp8860_led_probe()
268 		INIT_WORK(&led_dat->work, adp8860_led_work);  in adp8860_led_probe()
270 		ret = led_classdev_register(&client->dev, &led_dat->cdev);  in adp8860_led_probe()
272 			dev_err(&client->dev, "failed to register LED %d\n",  in adp8860_led_probe()
273 				led_dat->id);  in adp8860_led_probe()
279 			dev_err(&client->dev, "failed to write\n");  in adp8860_led_probe()
285 	data->led = led;  in adp8860_led_probe()
290 	for (i = i - 1; i >= 0; --i) {  in adp8860_led_probe()
301 		dev_get_platdata(&client->dev);  in adp8860_led_remove()
305 	for (i = 0; i < pdata->num_leds; i++) {  in adp8860_led_remove()
306 		led_classdev_unregister(&data->led[i].cdev);  in adp8860_led_remove()
307 		cancel_work_sync(&data->led[i].work);  in adp8860_led_remove()
327 	struct i2c_client *client = data->client;  in adp8860_bl_set()
330 	if (data->en_ambl_sens) {  in adp8860_bl_set()
332 			/* Disable Ambient Light auto adjust */  in adp8860_bl_set()
338 			 * MAX_BRIGHTNESS -> Enable Ambient Light auto adjust  in adp8860_bl_set()
342 					 data->cached_daylight_max);  in adp8860_bl_set()
349 	if (data->current_brightness && brightness == 0)  in adp8860_bl_set()
352 	else if (data->current_brightness == 0 && brightness)  in adp8860_bl_set()
357 		data->current_brightness = brightness;  in adp8860_bl_set()
371 	return data->current_brightness;  in adp8860_bl_get_brightness()
382 	struct i2c_client *client = data->client;  in adp8860_bl_setup()
383 	struct adp8860_backlight_platform_data *pdata = data->pdata;  in adp8860_bl_setup()
386 	ret |= adp8860_write(client, ADP8860_BLSEN, ~pdata->bl_led_assign);  in adp8860_bl_setup()
387 	ret |= adp8860_write(client, ADP8860_BLMX1, pdata->l1_daylight_max);  in adp8860_bl_setup()
388 	ret |= adp8860_write(client, ADP8860_BLDM1, pdata->l1_daylight_dim);  in adp8860_bl_setup()
390 	if (data->en_ambl_sens) {  in adp8860_bl_setup()
391 		data->cached_daylight_max = pdata->l1_daylight_max;  in adp8860_bl_setup()
393 						pdata->l2_office_max);  in adp8860_bl_setup()
395 						pdata->l2_office_dim);  in adp8860_bl_setup()
397 						pdata->l3_dark_max);  in adp8860_bl_setup()
399 						pdata->l3_dark_dim);  in adp8860_bl_setup()
401 		ret |= adp8860_write(client, ADP8860_L2_TRP, pdata->l2_trip);  in adp8860_bl_setup()
402 		ret |= adp8860_write(client, ADP8860_L2_HYS, pdata->l2_hyst);  in adp8860_bl_setup()
403 		ret |= adp8860_write(client, ADP8860_L3_TRP, pdata->l3_trip);  in adp8860_bl_setup()
404 		ret |= adp8860_write(client, ADP8860_L3_HYS, pdata->l3_hyst);  in adp8860_bl_setup()
406 						ALS_CCFG_VAL(pdata->abml_filt));  in adp8860_bl_setup()
410 			BL_CFGR_VAL(pdata->bl_fade_law, 0));  in adp8860_bl_setup()
412 	ret |= adp8860_write(client, ADP8860_BLFR, FADE_VAL(pdata->bl_fade_in,  in adp8860_bl_setup()
413 			pdata->bl_fade_out));  in adp8860_bl_setup()
416 			(data->gdwn_dis ? GDWN_DIS : 0));  in adp8860_bl_setup()
427 	mutex_lock(&data->lock);  in adp8860_show()
428 	error = adp8860_read(data->client, reg, &reg_val);  in adp8860_show()
429 	mutex_unlock(&data->lock);  in adp8860_show()
448 	mutex_lock(&data->lock);  in adp8860_store()
449 	adp8860_write(data->client, reg, val);  in adp8860_store()
450 	mutex_unlock(&data->lock);  in adp8860_store()
494 	int ret = kstrtoul(buf, 10, &data->cached_daylight_max);  in adp8860_bl_l1_daylight_max_store()
558 	mutex_lock(&data->lock);  in adp8860_bl_ambient_light_level_show()
559 	error = adp8860_read(data->client, ADP8860_PH1LEVL, &reg_val);  in adp8860_bl_ambient_light_level_show()
562 		error = adp8860_read(data->client, ADP8860_PH1LEVH, &reg_val);  in adp8860_bl_ambient_light_level_show()
564 	mutex_unlock(&data->lock);  in adp8860_bl_ambient_light_level_show()
569 	/* Return 13-bit conversion value for the first light sensor */  in adp8860_bl_ambient_light_level_show()
584 	mutex_lock(&data->lock);  in adp8860_bl_ambient_light_zone_show()
585 	error = adp8860_read(data->client, ADP8860_CFGR, &reg_val);  in adp8860_bl_ambient_light_zone_show()
586 	mutex_unlock(&data->lock);  in adp8860_bl_ambient_light_zone_show()
610 		adp8860_set_bits(data->client, ADP8860_MDCR, CMP_AUTOEN);  in adp8860_bl_ambient_light_zone_store()
612 		/* Disable automatic ambient light sensing */  in adp8860_bl_ambient_light_zone_store()
613 		adp8860_clr_bits(data->client, ADP8860_MDCR, CMP_AUTOEN);  in adp8860_bl_ambient_light_zone_store()
616 		mutex_lock(&data->lock);  in adp8860_bl_ambient_light_zone_store()
617 		ret = adp8860_read(data->client, ADP8860_CFGR, &reg_val);  in adp8860_bl_ambient_light_zone_store()
620 			reg_val |= (val - 1) << CFGR_BLV_SHIFT;  in adp8860_bl_ambient_light_zone_store()
621 			adp8860_write(data->client, ADP8860_CFGR, reg_val);  in adp8860_bl_ambient_light_zone_store()
623 		mutex_unlock(&data->lock);  in adp8860_bl_ambient_light_zone_store()
657 		dev_get_platdata(&client->dev);  in adp8860_probe()
662 	if (!i2c_check_functionality(client->adapter,  in adp8860_probe()
664 		dev_err(&client->dev, "SMBUS Byte Data not Supported\n");  in adp8860_probe()
665 		return -EIO;  in adp8860_probe()
669 		dev_err(&client->dev, "no platform data?\n");  in adp8860_probe()
670 		return -EINVAL;  in adp8860_probe()
673 	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);  in adp8860_probe()
675 		return -ENOMEM;  in adp8860_probe()
683 		data->gdwn_dis = !!pdata->gdwn_dis;  in adp8860_probe()
686 		data->en_ambl_sens = !!pdata->en_ambl_sens;  in adp8860_probe()
689 		data->gdwn_dis = !!pdata->gdwn_dis;  in adp8860_probe()
692 		dev_err(&client->dev, "failed to probe\n");  in adp8860_probe()
693 		return -ENODEV;  in adp8860_probe()
698 	data->revid = ADP8860_DEVID(reg_val);  in adp8860_probe()
699 	data->client = client;  in adp8860_probe()
700 	data->pdata = pdata;  in adp8860_probe()
701 	data->id = id->driver_data;  in adp8860_probe()
702 	data->current_brightness = 0;  in adp8860_probe()
709 	mutex_init(&data->lock);  in adp8860_probe()
711 	bl = devm_backlight_device_register(&client->dev,  in adp8860_probe()
712 				dev_driver_string(&client->dev),  in adp8860_probe()
713 				&client->dev, data, &adp8860_bl_ops, &props);  in adp8860_probe()
715 		dev_err(&client->dev, "failed to register backlight\n");  in adp8860_probe()
719 	bl->props.brightness = ADP8860_MAX_BRIGHTNESS;  in adp8860_probe()
721 	data->bl = bl;  in adp8860_probe()
723 	if (data->en_ambl_sens)  in adp8860_probe()
724 		ret = sysfs_create_group(&bl->dev.kobj,  in adp8860_probe()
728 		dev_err(&client->dev, "failed to register sysfs\n");  in adp8860_probe()
734 		ret = -EIO;  in adp8860_probe()
740 	dev_info(&client->dev, "%s Rev.%d Backlight\n",  in adp8860_probe()
741 		client->name, data->revid);  in adp8860_probe()
743 	if (pdata->num_leds)  in adp8860_probe()
749 	if (data->en_ambl_sens)  in adp8860_probe()
750 		sysfs_remove_group(&data->bl->dev.kobj,  in adp8860_probe()
762 	if (data->led)  in adp8860_remove()
765 	if (data->en_ambl_sens)  in adp8860_remove()
766 		sysfs_remove_group(&data->bl->dev.kobj,  in adp8860_remove()