1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * mcs5000_ts.c - Touchscreen driver for MELFAS MCS-5000 controller
8  * Based on wm97xx-core.c
85 /* Touchscreen absolute values */
98 /* Each client has this additional data */
108 	struct i2c_client *client = data->client;  in mcs5000_ts_interrupt()
117 		dev_err(&client->dev, "%s, err[%d]\n", __func__, err);  in mcs5000_ts_interrupt()
123 		input_report_key(data->input_dev, BTN_TOUCH, 0);  in mcs5000_ts_interrupt()
124 		input_sync(data->input_dev);  in mcs5000_ts_interrupt()
131 		input_report_key(data->input_dev, BTN_TOUCH, 1);  in mcs5000_ts_interrupt()
132 		input_report_abs(data->input_dev, ABS_X, x);  in mcs5000_ts_interrupt()
133 		input_report_abs(data->input_dev, ABS_Y, y);  in mcs5000_ts_interrupt()
134 		input_sync(data->input_dev);  in mcs5000_ts_interrupt()
150 		dev_err(&client->dev, "Unknown ts input type %d\n",  in mcs5000_ts_interrupt()
162 	struct i2c_client *client = data->client;  in mcs5000_ts_phys_init()
170 			platform_data->x_size >> 8);  in mcs5000_ts_phys_init()
172 			platform_data->x_size & 0xff);  in mcs5000_ts_phys_init()
174 			platform_data->y_size >> 8);  in mcs5000_ts_phys_init()
176 			platform_data->y_size & 0xff);  in mcs5000_ts_phys_init()
179 	i2c_smbus_write_byte_data(data->client, MCS5000_TS_OP_MODE,  in mcs5000_ts_phys_init()
190 	pdata = dev_get_platdata(&client->dev);  in mcs5000_ts_probe()
192 		return -EINVAL;  in mcs5000_ts_probe()
194 	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);  in mcs5000_ts_probe()
196 		dev_err(&client->dev, "Failed to allocate memory\n");  in mcs5000_ts_probe()
197 		return -ENOMEM;  in mcs5000_ts_probe()
200 	data->client = client;  in mcs5000_ts_probe()
202 	input_dev = devm_input_allocate_device(&client->dev);  in mcs5000_ts_probe()
204 		dev_err(&client->dev, "Failed to allocate input device\n");  in mcs5000_ts_probe()
205 		return -ENOMEM;  in mcs5000_ts_probe()
208 	input_dev->name = "MELFAS MCS-5000 Touchscreen";  in mcs5000_ts_probe()
209 	input_dev->id.bustype = BUS_I2C;  in mcs5000_ts_probe()
210 	input_dev->dev.parent = &client->dev;  in mcs5000_ts_probe()
212 	__set_bit(EV_ABS, input_dev->evbit);  in mcs5000_ts_probe()
213 	__set_bit(EV_KEY, input_dev->evbit);  in mcs5000_ts_probe()
214 	__set_bit(BTN_TOUCH, input_dev->keybit);  in mcs5000_ts_probe()
218 	data->input_dev = input_dev;  in mcs5000_ts_probe()
220 	if (pdata->cfg_pin)  in mcs5000_ts_probe()
221 		pdata->cfg_pin();  in mcs5000_ts_probe()
223 	error = devm_request_threaded_irq(&client->dev, client->irq,  in mcs5000_ts_probe()
228 		dev_err(&client->dev, "Failed to register interrupt\n");  in mcs5000_ts_probe()
232 	error = input_register_device(data->input_dev);  in mcs5000_ts_probe()
234 		dev_err(&client->dev, "Failed to register input device\n");  in mcs5000_ts_probe()
287 MODULE_DESCRIPTION("Touchscreen driver for MELFAS MCS-5000 controller");