1 // SPDX-License-Identifier: GPL-2.0-or-later
5  * LEDs		: drivers/led/leds-adp5520
6  * GPIO		: drivers/gpio/adp5520-gpio (ADP5520 only)
7  * Keys		: drivers/input/keyboard/adp5520-keys (ADP5520 only)
17  * Copyright (C) 2006-2008 Marvell International Ltd.
33 	struct i2c_client *client;  member
38 	unsigned long id;  member
42 static int __adp5520_read(struct i2c_client *client,  in __adp5520_read()  argument
47 	ret = i2c_smbus_read_byte_data(client, reg);  in __adp5520_read()
49 		dev_err(&client->dev, "failed reading at 0x%02x\n", reg);  in __adp5520_read()
57 static int __adp5520_write(struct i2c_client *client,  in __adp5520_write()  argument
62 	ret = i2c_smbus_write_byte_data(client, reg, val);  in __adp5520_write()
64 		dev_err(&client->dev, "failed writing 0x%02x to 0x%02x\n",  in __adp5520_write()
71 static int __adp5520_ack_bits(struct i2c_client *client, int reg,  in __adp5520_ack_bits()  argument
74 	struct adp5520_chip *chip = i2c_get_clientdata(client);  in __adp5520_ack_bits()
78 	mutex_lock(&chip->lock);  in __adp5520_ack_bits()
80 	ret = __adp5520_read(client, reg, &reg_val);  in __adp5520_ack_bits()
84 		ret = __adp5520_write(client, reg, reg_val);  in __adp5520_ack_bits()
87 	mutex_unlock(&chip->lock);  in __adp5520_ack_bits()
109 	mutex_lock(&chip->lock);  in adp5520_set_bits()
111 	ret = __adp5520_read(chip->client, reg, &reg_val);  in adp5520_set_bits()
115 		ret = __adp5520_write(chip->client, reg, reg_val);  in adp5520_set_bits()
118 	mutex_unlock(&chip->lock);  in adp5520_set_bits()
129 	mutex_lock(&chip->lock);  in adp5520_clr_bits()
131 	ret = __adp5520_read(chip->client, reg, &reg_val);  in adp5520_clr_bits()
135 		ret = __adp5520_write(chip->client, reg, reg_val);  in adp5520_clr_bits()
138 	mutex_unlock(&chip->lock);  in adp5520_clr_bits()
148 	if (chip->irq) {  in adp5520_register_notifier()
149 		adp5520_set_bits(chip->dev, ADP5520_INTERRUPT_ENABLE,  in adp5520_register_notifier()
153 		return blocking_notifier_chain_register(&chip->notifier_list,  in adp5520_register_notifier()
157 	return -ENODEV;  in adp5520_register_notifier()
166 	adp5520_clr_bits(chip->dev, ADP5520_INTERRUPT_ENABLE,  in adp5520_unregister_notifier()
170 	return blocking_notifier_chain_unregister(&chip->notifier_list, nb);  in adp5520_unregister_notifier()
181 	ret = __adp5520_read(chip->client, ADP5520_MODE_STATUS, &reg_val);  in adp5520_irq_thread()
188 	blocking_notifier_call_chain(&chip->notifier_list, events, NULL);  in adp5520_irq_thread()
190 	__adp5520_ack_bits(chip->client, ADP5520_MODE_STATUS, events);  in adp5520_irq_thread()
204 	return device_for_each_child(chip->dev, NULL, __remove_subdev);  in adp5520_remove_subdevs()
207 static int adp5520_probe(struct i2c_client *client,  in adp5520_probe()  argument
208 					const struct i2c_device_id *id)  in adp5520_probe()  argument
210 	struct adp5520_platform_data *pdata = dev_get_platdata(&client->dev);  in adp5520_probe()
215 	if (!i2c_check_functionality(client->adapter,  in adp5520_probe()
217 		dev_err(&client->dev, "SMBUS Word Data not Supported\n");  in adp5520_probe()
218 		return -EIO;  in adp5520_probe()
222 		dev_err(&client->dev, "missing platform data\n");  in adp5520_probe()
223 		return -ENODEV;  in adp5520_probe()
226 	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);  in adp5520_probe()
228 		return -ENOMEM;  in adp5520_probe()
230 	i2c_set_clientdata(client, chip);  in adp5520_probe()
231 	chip->client = client;  in adp5520_probe()
233 	chip->dev = &client->dev;  in adp5520_probe()
234 	chip->irq = client->irq;  in adp5520_probe()
235 	chip->id = id->driver_data;  in adp5520_probe()
236 	mutex_init(&chip->lock);  in adp5520_probe()
238 	if (chip->irq) {  in adp5520_probe()
239 		BLOCKING_INIT_NOTIFIER_HEAD(&chip->notifier_list);  in adp5520_probe()
241 		ret = request_threaded_irq(chip->irq, NULL, adp5520_irq_thread,  in adp5520_probe()
245 			dev_err(&client->dev, "failed to request irq %d\n",  in adp5520_probe()
246 					chip->irq);  in adp5520_probe()
251 	ret = adp5520_write(chip->dev, ADP5520_MODE_STATUS, ADP5520_nSTNBY);  in adp5520_probe()
253 		dev_err(&client->dev, "failed to write\n");  in adp5520_probe()
257 	if (pdata->keys) {  in adp5520_probe()
258 		pdev = platform_device_register_data(chip->dev, "adp5520-keys",  in adp5520_probe()
259 				chip->id, pdata->keys, sizeof(*pdata->keys));  in adp5520_probe()
266 	if (pdata->gpio) {  in adp5520_probe()
267 		pdev = platform_device_register_data(chip->dev, "adp5520-gpio",  in adp5520_probe()
268 				chip->id, pdata->gpio, sizeof(*pdata->gpio));  in adp5520_probe()
275 	if (pdata->leds) {  in adp5520_probe()
276 		pdev = platform_device_register_data(chip->dev, "adp5520-led",  in adp5520_probe()
277 				chip->id, pdata->leds, sizeof(*pdata->leds));  in adp5520_probe()
284 	if (pdata->backlight) {  in adp5520_probe()
285 		pdev = platform_device_register_data(chip->dev,  in adp5520_probe()
286 						"adp5520-backlight",  in adp5520_probe()
287 						chip->id,  in adp5520_probe()
288 						pdata->backlight,  in adp5520_probe()
289 						sizeof(*pdata->backlight));  in adp5520_probe()
302 	if (chip->irq)  in adp5520_probe()
303 		free_irq(chip->irq, chip);  in adp5520_probe()
311 	struct i2c_client *client = to_i2c_client(dev);  in adp5520_suspend()  local
312 	struct adp5520_chip *chip = dev_get_drvdata(&client->dev);  in adp5520_suspend()
314 	adp5520_read(chip->dev, ADP5520_MODE_STATUS, &chip->mode);  in adp5520_suspend()
316 	chip->mode &= ADP5520_BL_EN | ADP5520_DIM_EN | ADP5520_nSTNBY;  in adp5520_suspend()
317 	adp5520_write(chip->dev, ADP5520_MODE_STATUS, 0);  in adp5520_suspend()
323 	struct i2c_client *client = to_i2c_client(dev);  in adp5520_resume()  local
324 	struct adp5520_chip *chip = dev_get_drvdata(&client->dev);  in adp5520_resume()
326 	adp5520_write(chip->dev, ADP5520_MODE_STATUS, chip->mode);  in adp5520_resume()
334 	{ "pmic-adp5520", ID_ADP5520 },
335 	{ "pmic-adp5501", ID_ADP5501 },