1 // SPDX-License-Identifier: GPL-2.0-only
6 #include <linux/i2c.h>
73 			.addr = ts->client->addr,  in imagis_i2c_read_reg()
78 			.addr = ts->client->addr,  in imagis_i2c_read_reg()
85 	int retry = IST3038C_I2C_RETRY_COUNT;  in imagis_i2c_read_reg()  local
87 	/* Retry in case the controller fails to respond */  in imagis_i2c_read_reg()
89 		ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));  in imagis_i2c_read_reg()
95 		error = ret < 0 ? ret : -EIO;  in imagis_i2c_read_reg()
96 		dev_err(&ts->client->dev,  in imagis_i2c_read_reg()
97 			"%s - i2c_transfer failed: %d (%d)\n",  in imagis_i2c_read_reg()
99 	} while (--retry);  in imagis_i2c_read_reg()
112 	error = imagis_i2c_read_reg(ts, ts->tdata->interrupt_msg_cmd, &intr_message);  in imagis_interrupt()
114 		dev_err(&ts->client->dev,  in imagis_interrupt()
121 		dev_err(&ts->client->dev,  in imagis_interrupt()
122 			"finger count %d is more than maximum supported\n",  in imagis_interrupt()
130 		if (ts->tdata->protocol_b)  in imagis_interrupt()
132 						    ts->tdata->touch_coord_cmd + (i * 4),  in imagis_interrupt()
136 						    ts->tdata->touch_coord_cmd, &finger_status);  in imagis_interrupt()
138 			dev_err(&ts->client->dev,  in imagis_interrupt()
144 		input_mt_slot(ts->input_dev, i);  in imagis_interrupt()
145 		input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER,  in imagis_interrupt()
147 		touchscreen_report_pos(ts->input_dev, &ts->prop,  in imagis_interrupt()
151 		input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR,  in imagis_interrupt()
157 	for (int i = 0; i < ts->num_keycodes; i++)  in imagis_interrupt()
158 		input_report_key(ts->input_dev, ts->keycodes[i],  in imagis_interrupt()
161 	input_mt_sync_frame(ts->input_dev);  in imagis_interrupt()
162 	input_sync(ts->input_dev);  in imagis_interrupt()
172 	regulator_bulk_disable(ARRAY_SIZE(ts->supplies), ts->supplies);  in imagis_power_off()
179 	error = regulator_bulk_enable(ARRAY_SIZE(ts->supplies), ts->supplies);  in imagis_power_on()
196 	enable_irq(ts->client->irq);  in imagis_start()
203 	disable_irq(ts->client->irq);  in imagis_stop()
229 	input_dev = devm_input_allocate_device(&ts->client->dev);  in imagis_init_input_dev()
231 		return -ENOMEM;  in imagis_init_input_dev()
233 	ts->input_dev = input_dev;  in imagis_init_input_dev()
235 	input_dev->name = "Imagis capacitive touchscreen";  in imagis_init_input_dev()
236 	input_dev->phys = "input/ts";  in imagis_init_input_dev()
237 	input_dev->id.bustype = BUS_I2C;  in imagis_init_input_dev()
238 	input_dev->open = imagis_input_open;  in imagis_init_input_dev()
239 	input_dev->close = imagis_input_close;  in imagis_init_input_dev()
246 	if (ts->tdata->touch_keys_supported) {  in imagis_init_input_dev()
247 		ts->num_keycodes = of_property_read_variable_u32_array(  in imagis_init_input_dev()
248 				ts->client->dev.of_node, "linux,keycodes",  in imagis_init_input_dev()
249 				ts->keycodes, 0, ARRAY_SIZE(ts->keycodes));  in imagis_init_input_dev()
250 		if (ts->num_keycodes <= 0) {  in imagis_init_input_dev()
251 			ts->keycodes[0] = KEY_APPSELECT;  in imagis_init_input_dev()
252 			ts->keycodes[1] = KEY_BACK;  in imagis_init_input_dev()
253 			ts->num_keycodes = 2;  in imagis_init_input_dev()
256 		input_dev->keycodemax = ts->num_keycodes;  in imagis_init_input_dev()
257 		input_dev->keycodesize = sizeof(ts->keycodes[0]);  in imagis_init_input_dev()
258 		input_dev->keycode = ts->keycodes;  in imagis_init_input_dev()
261 	for (int i = 0; i < ts->num_keycodes; i++)  in imagis_init_input_dev()
262 		input_set_capability(input_dev, EV_KEY, ts->keycodes[i]);  in imagis_init_input_dev()
264 	touchscreen_parse_properties(input_dev, true, &ts->prop);  in imagis_init_input_dev()
265 	if (!ts->prop.max_x || !ts->prop.max_y) {  in imagis_init_input_dev()
266 		dev_err(&ts->client->dev,  in imagis_init_input_dev()
267 			"Touchscreen-size-x and/or touchscreen-size-y not set in dts\n");  in imagis_init_input_dev()
268 		return -EINVAL;  in imagis_init_input_dev()
275 		dev_err(&ts->client->dev,  in imagis_init_input_dev()
282 		dev_err(&ts->client->dev,  in imagis_init_input_dev()
292 	struct i2c_client *client = ts->client;  in imagis_init_regulators()
294 	ts->supplies[0].supply = "vdd";  in imagis_init_regulators()
295 	ts->supplies[1].supply = "vddio";  in imagis_init_regulators()
296 	return devm_regulator_bulk_get(&client->dev,  in imagis_init_regulators()
297 				       ARRAY_SIZE(ts->supplies),  in imagis_init_regulators()
298 				       ts->supplies);  in imagis_init_regulators()
301 static int imagis_probe(struct i2c_client *i2c)  in imagis_probe()  argument
303 	struct device *dev = &i2c->dev;  in imagis_probe()
309 		return -ENOMEM;  in imagis_probe()
311 	ts->client = i2c;  in imagis_probe()
313 	ts->tdata = device_get_match_data(dev);  in imagis_probe()
314 	if (!ts->tdata) {  in imagis_probe()
316 		return -EINVAL;  in imagis_probe()
337 	error = imagis_i2c_read_reg(ts, ts->tdata->whoami_cmd, &chip_id);  in imagis_probe()
343 	if (chip_id != ts->tdata->whoami_val) {  in imagis_probe()
345 		return -EINVAL;  in imagis_probe()
348 	error = devm_request_threaded_irq(dev, i2c->irq,  in imagis_probe()
351 					  "imagis-touchscreen", ts);  in imagis_probe()
354 			i2c->irq, error);  in imagis_probe()
371 	mutex_lock(&ts->input_dev->mutex);  in imagis_suspend()
373 	if (input_device_enabled(ts->input_dev))  in imagis_suspend()
376 	mutex_unlock(&ts->input_dev->mutex);  in imagis_suspend()
387 	mutex_lock(&ts->input_dev->mutex);  in imagis_resume()
389 	if (input_device_enabled(ts->input_dev))  in imagis_resume()
392 	mutex_unlock(&ts->input_dev->mutex);  in imagis_resume()
452 		.name = "imagis-touchscreen",