1 // SPDX-License-Identifier: GPL-2.0-only
6 #include <linux/i2c.h>
46 			.addr = ts->client->addr,  in imagis_i2c_read_reg()
51 			.addr = ts->client->addr,  in imagis_i2c_read_reg()
58 	int retry = IST3038C_I2C_RETRY_COUNT;  in imagis_i2c_read_reg()  local
60 	/* Retry in case the controller fails to respond */  in imagis_i2c_read_reg()
62 		ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));  in imagis_i2c_read_reg()
68 		error = ret < 0 ? ret : -EIO;  in imagis_i2c_read_reg()
69 		dev_err(&ts->client->dev,  in imagis_i2c_read_reg()
70 			"%s - i2c_transfer failed: %d (%d)\n",  in imagis_i2c_read_reg()
72 	} while (--retry);  in imagis_i2c_read_reg()
88 		dev_err(&ts->client->dev,  in imagis_interrupt()
95 		dev_err(&ts->client->dev,  in imagis_interrupt()
96 			"finger count %d is more than maximum supported\n",  in imagis_interrupt()
108 			dev_err(&ts->client->dev,  in imagis_interrupt()
114 		input_mt_slot(ts->input_dev, i);  in imagis_interrupt()
115 		input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER,  in imagis_interrupt()
117 		touchscreen_report_pos(ts->input_dev, &ts->prop,  in imagis_interrupt()
121 		input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR,  in imagis_interrupt()
125 	input_mt_sync_frame(ts->input_dev);  in imagis_interrupt()
126 	input_sync(ts->input_dev);  in imagis_interrupt()
136 	regulator_bulk_disable(ARRAY_SIZE(ts->supplies), ts->supplies);  in imagis_power_off()
143 	error = regulator_bulk_enable(ARRAY_SIZE(ts->supplies), ts->supplies);  in imagis_power_on()
160 	enable_irq(ts->client->irq);  in imagis_start()
167 	disable_irq(ts->client->irq);  in imagis_stop()
193 	input_dev = devm_input_allocate_device(&ts->client->dev);  in imagis_init_input_dev()
195 		return -ENOMEM;  in imagis_init_input_dev()
197 	ts->input_dev = input_dev;  in imagis_init_input_dev()
199 	input_dev->name = "Imagis capacitive touchscreen";  in imagis_init_input_dev()
200 	input_dev->phys = "input/ts";  in imagis_init_input_dev()
201 	input_dev->id.bustype = BUS_I2C;  in imagis_init_input_dev()
202 	input_dev->open = imagis_input_open;  in imagis_init_input_dev()
203 	input_dev->close = imagis_input_close;  in imagis_init_input_dev()
211 	touchscreen_parse_properties(input_dev, true, &ts->prop);  in imagis_init_input_dev()
212 	if (!ts->prop.max_x || !ts->prop.max_y) {  in imagis_init_input_dev()
213 		dev_err(&ts->client->dev,  in imagis_init_input_dev()
214 			"Touchscreen-size-x and/or touchscreen-size-y not set in dts\n");  in imagis_init_input_dev()
215 		return -EINVAL;  in imagis_init_input_dev()
222 		dev_err(&ts->client->dev,  in imagis_init_input_dev()
229 		dev_err(&ts->client->dev,  in imagis_init_input_dev()
239 	struct i2c_client *client = ts->client;  in imagis_init_regulators()
241 	ts->supplies[0].supply = "vdd";  in imagis_init_regulators()
242 	ts->supplies[1].supply = "vddio";  in imagis_init_regulators()
243 	return devm_regulator_bulk_get(&client->dev,  in imagis_init_regulators()
244 				       ARRAY_SIZE(ts->supplies),  in imagis_init_regulators()
245 				       ts->supplies);  in imagis_init_regulators()
248 static int imagis_probe(struct i2c_client *i2c)  in imagis_probe()  argument
250 	struct device *dev = &i2c->dev;  in imagis_probe()
256 		return -ENOMEM;  in imagis_probe()
258 	ts->client = i2c;  in imagis_probe()
288 		return -EINVAL;  in imagis_probe()
291 	error = devm_request_threaded_irq(dev, i2c->irq,  in imagis_probe()
294 					  "imagis-touchscreen", ts);  in imagis_probe()
297 			i2c->irq, error);  in imagis_probe()
314 	mutex_lock(&ts->input_dev->mutex);  in imagis_suspend()
316 	if (input_device_enabled(ts->input_dev))  in imagis_suspend()
319 	mutex_unlock(&ts->input_dev->mutex);  in imagis_suspend()
330 	mutex_lock(&ts->input_dev->mutex);  in imagis_resume()
332 	if (input_device_enabled(ts->input_dev))  in imagis_resume()
335 	mutex_unlock(&ts->input_dev->mutex);  in imagis_resume()
352 		.name = "imagis-touchscreen",