55 	struct i2c_client *client;  member
64 static int qt2160_read(struct i2c_client *client, u8 reg);
65 static int qt2160_write(struct i2c_client *client, u8 reg, u8 data);
74 	struct i2c_client *client = qt2160->client;  in qt2160_led_set()  local
78 		drive = qt2160_read(client, QT2160_CMD_DRIVE_X);  in qt2160_led_set()
79 		pwmen = qt2160_read(client, QT2160_CMD_PWMEN_X);  in qt2160_led_set()
88 		qt2160_write(client, QT2160_CMD_DRIVE_X, drive);  in qt2160_led_set()
89 		qt2160_write(client, QT2160_CMD_PWMEN_X, pwmen);  in qt2160_led_set()
96 			qt2160_write(client, QT2160_CMD_PWM_DUTY, value);  in qt2160_led_set()
106 static int qt2160_read_block(struct i2c_client *client,  in qt2160_read_block()  argument
116 	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C))	{  in qt2160_read_block()
118 		error = i2c_smbus_write_byte(client, inireg + idx);  in qt2160_read_block()
120 			dev_err(&client->dev,  in qt2160_read_block()
125 		error = i2c_master_recv(client, buffer, count);  in qt2160_read_block()
127 			dev_err(&client->dev,  in qt2160_read_block()
136 			error = i2c_smbus_write_byte(client, inireg + idx);  in qt2160_read_block()
138 				dev_err(&client->dev,  in qt2160_read_block()
143 			data = i2c_smbus_read_byte(client);  in qt2160_read_block()
145 				dev_err(&client->dev,  in qt2160_read_block()
160 	struct i2c_client *client = qt2160->client;  in qt2160_get_key_matrix()  local
165 	dev_dbg(&client->dev, "requesting keys...\n");  in qt2160_get_key_matrix()
171 	ret = qt2160_read_block(client, QT2160_CMD_GSTAT, regs, 6);  in qt2160_get_key_matrix()
173 		dev_err(&client->dev,  in qt2160_get_key_matrix()
187 			dev_dbg(&client->dev, "key %d %s\n",  in qt2160_get_key_matrix()
204 static int qt2160_read(struct i2c_client *client, u8 reg)  in qt2160_read()  argument
208 	ret = i2c_smbus_write_byte(client, reg);  in qt2160_read()
210 		dev_err(&client->dev,  in qt2160_read()
215 	ret = i2c_smbus_read_byte(client);  in qt2160_read()
217 		dev_err(&client->dev,  in qt2160_read()
225 static int qt2160_write(struct i2c_client *client, u8 reg, u8 data)  in qt2160_write()  argument
229 	ret = i2c_smbus_write_byte_data(client, reg, data);  in qt2160_write()
231 		dev_err(&client->dev,  in qt2160_write()
241 	struct i2c_client *client = qt2160->client;  in qt2160_register_leds()  local
255 		error = devm_led_classdev_register(&client->dev, &led->cdev);  in qt2160_register_leds()
261 	qt2160_write(client, QT2160_CMD_DRIVE_X, 0);  in qt2160_register_leds()
262 	qt2160_write(client, QT2160_CMD_PWMEN_X, 0);  in qt2160_register_leds()
263 	qt2160_write(client, QT2160_CMD_PWM_DUTY, 0);  in qt2160_register_leds()
277 static bool qt2160_identify(struct i2c_client *client)  in qt2160_identify()  argument
282 	id = qt2160_read(client, QT2160_CMD_CHIPID);  in qt2160_identify()
284 		dev_err(&client->dev, "ID %d not supported\n", id);  in qt2160_identify()
289 	ver = qt2160_read(client, QT2160_CMD_CODEVER);  in qt2160_identify()
291 		dev_err(&client->dev, "could not get firmware version\n");  in qt2160_identify()
296 	rev = qt2160_read(client, QT2160_CMD_SUBVER);  in qt2160_identify()
298 		dev_err(&client->dev, "could not get firmware revision\n");  in qt2160_identify()
302 	dev_info(&client->dev, "AT42QT2160 firmware version %d.%d.%d\n",  in qt2160_identify()
308 static int qt2160_probe(struct i2c_client *client)  in qt2160_probe()  argument
315 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE)) {  in qt2160_probe()
316 		dev_err(&client->dev, "%s adapter not supported\n",  in qt2160_probe()
317 			dev_driver_string(&client->adapter->dev));  in qt2160_probe()
321 	if (!qt2160_identify(client))  in qt2160_probe()
325 	qt2160 = devm_kzalloc(&client->dev, sizeof(*qt2160), GFP_KERNEL);  in qt2160_probe()
329 	input = devm_input_allocate_device(&client->dev);  in qt2160_probe()
333 	qt2160->client = client;  in qt2160_probe()
354 	error = qt2160_write(client, QT2160_CMD_CALIBRATE, 1);  in qt2160_probe()
356 		dev_err(&client->dev, "failed to calibrate device\n");  in qt2160_probe()
360 	if (client->irq) {  in qt2160_probe()
361 		error = devm_request_threaded_irq(&client->dev, client->irq,  in qt2160_probe()
366 			dev_err(&client->dev,  in qt2160_probe()
367 				"failed to allocate irq %d\n", client->irq);  in qt2160_probe()
373 			dev_err(&client->dev, "Failed to setup polling\n");  in qt2160_probe()
381 		dev_err(&client->dev, "Failed to register leds\n");  in qt2160_probe()
387 		dev_err(&client->dev,  in qt2160_probe()