66 static int imagis_i2c_read_reg(struct imagis_ts *ts,  in imagis_i2c_read_reg()  argument
73 			.addr = ts->client->addr,  in imagis_i2c_read_reg()
78 			.addr = ts->client->addr,  in imagis_i2c_read_reg()
89 		ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg));  in imagis_i2c_read_reg()
96 		dev_err(&ts->client->dev,  in imagis_i2c_read_reg()
106 	struct imagis_ts *ts = dev_id;  in imagis_interrupt()  local
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()
130 		if (ts->tdata->protocol_b)  in imagis_interrupt()
131 			error = imagis_i2c_read_reg(ts,  in imagis_interrupt()
132 						    ts->tdata->touch_coord_cmd + (i * 4),  in imagis_interrupt()
135 			error = imagis_i2c_read_reg(ts,  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()
170 	struct imagis_ts *ts = _ts;  in imagis_power_off()  local
172 	regulator_bulk_disable(ARRAY_SIZE(ts->supplies), ts->supplies);  in imagis_power_off()
175 static int imagis_power_on(struct imagis_ts *ts)  in imagis_power_on()  argument
179 	error = regulator_bulk_enable(ARRAY_SIZE(ts->supplies), ts->supplies);  in imagis_power_on()
188 static int imagis_start(struct imagis_ts *ts)  in imagis_start()  argument
192 	error = imagis_power_on(ts);  in imagis_start()
196 	enable_irq(ts->client->irq);  in imagis_start()
201 static int imagis_stop(struct imagis_ts *ts)  in imagis_stop()  argument
203 	disable_irq(ts->client->irq);  in imagis_stop()
205 	imagis_power_off(ts);  in imagis_stop()
212 	struct imagis_ts *ts = input_get_drvdata(dev);  in imagis_input_open()  local
214 	return imagis_start(ts);  in imagis_input_open()
219 	struct imagis_ts *ts = input_get_drvdata(dev);  in imagis_input_close()  local
221 	imagis_stop(ts);  in imagis_input_close()
224 static int imagis_init_input_dev(struct imagis_ts *ts)  in imagis_init_input_dev()  argument
229 	input_dev = devm_input_allocate_device(&ts->client->dev);  in imagis_init_input_dev()
233 	ts->input_dev = input_dev;  in imagis_init_input_dev()
241 	input_set_drvdata(input_dev, ts);  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()
275 		dev_err(&ts->client->dev,  in imagis_init_input_dev()
282 		dev_err(&ts->client->dev,  in imagis_init_input_dev()
290 static int imagis_init_regulators(struct imagis_ts *ts)  in imagis_init_regulators()  argument
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()
297 				       ARRAY_SIZE(ts->supplies),  in imagis_init_regulators()
298 				       ts->supplies);  in imagis_init_regulators()
304 	struct imagis_ts *ts;  in imagis_probe()  local
307 	ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL);  in imagis_probe()
308 	if (!ts)  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()
319 	error = imagis_init_regulators(ts);  in imagis_probe()
325 	error = imagis_power_on(ts);  in imagis_probe()
331 	error = devm_add_action_or_reset(dev, imagis_power_off, ts);  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()
351 					  "imagis-touchscreen", ts);  in imagis_probe()
358 	error = imagis_init_input_dev(ts);  in imagis_probe()
368 	struct imagis_ts *ts = i2c_get_clientdata(client);  in imagis_suspend()  local
371 	mutex_lock(&ts->input_dev->mutex);  in imagis_suspend()
373 	if (input_device_enabled(ts->input_dev))  in imagis_suspend()
374 		retval = imagis_stop(ts);  in imagis_suspend()
376 	mutex_unlock(&ts->input_dev->mutex);  in imagis_suspend()
384 	struct imagis_ts *ts = i2c_get_clientdata(client);  in imagis_resume()  local
387 	mutex_lock(&ts->input_dev->mutex);  in imagis_resume()
389 	if (input_device_enabled(ts->input_dev))  in imagis_resume()
390 		retval = imagis_start(ts);  in imagis_resume()
392 	mutex_unlock(&ts->input_dev->mutex);  in imagis_resume()