234 static int elants_i2c_calibrate(struct elants_data *ts)  in elants_i2c_calibrate()  argument
236 	struct i2c_client *client = ts->client;  in elants_i2c_calibrate()
244 	ts->state = ELAN_WAIT_RECALIBRATION;  in elants_i2c_calibrate()
245 	reinit_completion(&ts->cmd_done);  in elants_i2c_calibrate()
252 	ret = wait_for_completion_interruptible_timeout(&ts->cmd_done,  in elants_i2c_calibrate()
255 	ts->state = ELAN_STATE_NORMAL;  in elants_i2c_calibrate()
265 	if (memcmp(rek_resp, ts->cmd_resp, sizeof(rek_resp))) {  in elants_i2c_calibrate()
268 			(int)sizeof(ts->cmd_resp), ts->cmd_resp);  in elants_i2c_calibrate()
301 static int elants_i2c_query_fw_id(struct elants_data *ts)  in elants_i2c_query_fw_id()  argument
303 	struct i2c_client *client = ts->client;  in elants_i2c_query_fw_id()
312 			ts->hw_version = elants_i2c_parse_version(resp);  in elants_i2c_query_fw_id()
313 			if (ts->hw_version != 0xffff)  in elants_i2c_query_fw_id()
327 static int elants_i2c_query_fw_version(struct elants_data *ts)  in elants_i2c_query_fw_version()  argument
329 	struct i2c_client *client = ts->client;  in elants_i2c_query_fw_version()
338 			ts->fw_version = elants_i2c_parse_version(resp);  in elants_i2c_query_fw_version()
339 			if (ts->fw_version != 0x0000 &&  in elants_i2c_query_fw_version()
340 			    ts->fw_version != 0xffff)  in elants_i2c_query_fw_version()
354 static int elants_i2c_query_test_version(struct elants_data *ts)  in elants_i2c_query_test_version()  argument
356 	struct i2c_client *client = ts->client;  in elants_i2c_query_test_version()
367 			ts->test_version = version >> 8;  in elants_i2c_query_test_version()
368 			ts->solution_version = version & 0xff;  in elants_i2c_query_test_version()
383 static int elants_i2c_query_bc_version(struct elants_data *ts)  in elants_i2c_query_bc_version()  argument
385 	struct i2c_client *client = ts->client;  in elants_i2c_query_bc_version()
401 	ts->bc_version = version >> 8;  in elants_i2c_query_bc_version()
402 	ts->iap_version = version & 0xff;  in elants_i2c_query_bc_version()
407 static int elants_i2c_query_ts_info(struct elants_data *ts)  in elants_i2c_query_ts_info()  argument
409 	struct i2c_client *client = ts->client;  in elants_i2c_query_ts_info()
484 		ts->x_max = ELAN_TS_RESOLUTION(rows, osr);  in elants_i2c_query_ts_info()
485 		ts->x_res = DIV_ROUND_CLOSEST(ts->x_max, phy_x);  in elants_i2c_query_ts_info()
486 		ts->y_max = ELAN_TS_RESOLUTION(cols, osr);  in elants_i2c_query_ts_info()
487 		ts->y_res = DIV_ROUND_CLOSEST(ts->y_max, phy_y);  in elants_i2c_query_ts_info()
508 static int elants_i2c_initialize(struct elants_data *ts)  in elants_i2c_initialize()  argument
510 	struct i2c_client *client = ts->client;  in elants_i2c_initialize()
539 			ts->iap_mode = ELAN_IAP_OPERATIONAL;  in elants_i2c_initialize()
557 		error = elants_i2c_query_fw_id(ts);  in elants_i2c_initialize()
559 		error = elants_i2c_query_fw_version(ts);  in elants_i2c_initialize()
562 		ts->iap_mode = ELAN_IAP_RECOVERY;  in elants_i2c_initialize()
564 		elants_i2c_query_test_version(ts);  in elants_i2c_initialize()
565 		elants_i2c_query_bc_version(ts);  in elants_i2c_initialize()
566 		elants_i2c_query_ts_info(ts);  in elants_i2c_initialize()
711 static int elants_i2c_fw_update(struct elants_data *ts)  in elants_i2c_fw_update()  argument
713 	struct i2c_client *client = ts->client;  in elants_i2c_fw_update()
718 	fw_name = kasprintf(GFP_KERNEL, "elants_i2c_%04x.bin", ts->hw_version);  in elants_i2c_fw_update()
741 					ts->iap_mode == ELAN_IAP_RECOVERY);  in elants_i2c_fw_update()
744 		ts->iap_mode = ELAN_IAP_RECOVERY;  in elants_i2c_fw_update()
748 	error = elants_i2c_initialize(ts);  in elants_i2c_fw_update()
753 		ts->iap_mode = ELAN_IAP_RECOVERY;  in elants_i2c_fw_update()
757 	ts->iap_mode = ELAN_IAP_OPERATIONAL;  in elants_i2c_fw_update()
760 	ts->state = ELAN_STATE_NORMAL;  in elants_i2c_fw_update()
765 		elants_i2c_calibrate(ts);  in elants_i2c_fw_update()
775 static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf)  in elants_i2c_mt_event()  argument
777 	struct input_dev *input = ts->input;  in elants_i2c_mt_event()
786 	dev_dbg(&ts->client->dev,  in elants_i2c_mt_event()
800 			dev_dbg(&ts->client->dev, "i=%d x=%d y=%d p=%d w=%d\n",  in elants_i2c_mt_event()
831 static void elants_i2c_event(struct elants_data *ts, u8 *buf)  in elants_i2c_event()  argument
836 		dev_warn(&ts->client->dev,  in elants_i2c_event()
841 		dev_warn(&ts->client->dev,  in elants_i2c_event()
845 		elants_i2c_mt_event(ts, buf);  in elants_i2c_event()
851 	struct elants_data *ts = _dev;  in elants_i2c_irq()  local
852 	struct i2c_client *client = ts->client;  in elants_i2c_irq()
857 	len = i2c_master_recv(client, ts->buf, sizeof(ts->buf));  in elants_i2c_irq()
865 		__func__, HEADER_SIZE, ts->buf);  in elants_i2c_irq()
867 	switch (ts->state) {  in elants_i2c_irq()
869 		if (ts->buf[FW_HDR_TYPE] == CMD_HEADER_REK) {  in elants_i2c_irq()
870 			memcpy(ts->cmd_resp, ts->buf, sizeof(ts->cmd_resp));  in elants_i2c_irq()
871 			complete(&ts->cmd_done);  in elants_i2c_irq()
872 			ts->state = ELAN_STATE_NORMAL;  in elants_i2c_irq()
877 		if (ts->buf[FW_HDR_TYPE] != QUEUE_HEADER_NORMAL)  in elants_i2c_irq()
880 		ts->state = ELAN_STATE_NORMAL;  in elants_i2c_irq()
885 		switch (ts->buf[FW_HDR_TYPE]) {  in elants_i2c_irq()
892 			if (memcmp(ts->buf, wait_packet, sizeof(wait_packet))) {  in elants_i2c_irq()
895 					HEADER_SIZE, ts->buf);  in elants_i2c_irq()
897 				ts->state = ELAN_WAIT_QUEUE_HEADER;  in elants_i2c_irq()
903 			elants_i2c_event(ts, &ts->buf[HEADER_SIZE]);  in elants_i2c_irq()
907 			report_count = ts->buf[FW_HDR_COUNT];  in elants_i2c_irq()
911 					HEADER_SIZE, ts->buf);  in elants_i2c_irq()
915 			report_len = ts->buf[FW_HDR_LENGTH] / report_count;  in elants_i2c_irq()
919 					HEADER_SIZE, ts->buf);  in elants_i2c_irq()
924 				u8 *buf = ts->buf + HEADER_SIZE +  in elants_i2c_irq()
926 				elants_i2c_event(ts, buf);  in elants_i2c_irq()
932 				HEADER_SIZE, ts->buf);  in elants_i2c_irq()
950 	struct elants_data *ts = i2c_get_clientdata(client);  in calibrate_store()  local
953 	error = mutex_lock_interruptible(&ts->sysfs_mutex);  in calibrate_store()
957 	error = elants_i2c_calibrate(ts);  in calibrate_store()
959 	mutex_unlock(&ts->sysfs_mutex);  in calibrate_store()
968 	struct elants_data *ts = i2c_get_clientdata(client);  in write_update_fw()  local
971 	error = mutex_lock_interruptible(&ts->sysfs_mutex);  in write_update_fw()
975 	error = elants_i2c_fw_update(ts);  in write_update_fw()
978 	mutex_unlock(&ts->sysfs_mutex);  in write_update_fw()
986 	struct elants_data *ts = i2c_get_clientdata(client);  in show_iap_mode()  local
989 		       ts->iap_mode == ELAN_IAP_OPERATIONAL ?  in show_iap_mode()
1021 	struct elants_data *ts = i2c_get_clientdata(client);  in elants_version_attribute_show()  local
1024 	u8 *field = (u8 *)((char *)ts + attr->field_offset);  in elants_version_attribute_show()
1066 	struct elants_data *ts = _data;  in elants_i2c_remove_sysfs_group()  local
1068 	sysfs_remove_group(&ts->client->dev.kobj, &elants_attribute_group);  in elants_i2c_remove_sysfs_group()
1071 static int elants_i2c_power_on(struct elants_data *ts)  in elants_i2c_power_on()  argument
1079 	if (IS_ERR_OR_NULL(ts->reset_gpio))  in elants_i2c_power_on()
1082 	gpiod_set_value_cansleep(ts->reset_gpio, 1);  in elants_i2c_power_on()
1084 	error = regulator_enable(ts->vcc33);  in elants_i2c_power_on()
1086 		dev_err(&ts->client->dev,  in elants_i2c_power_on()
1092 	error = regulator_enable(ts->vccio);  in elants_i2c_power_on()
1094 		dev_err(&ts->client->dev,  in elants_i2c_power_on()
1097 		regulator_disable(ts->vcc33);  in elants_i2c_power_on()
1108 	gpiod_set_value_cansleep(ts->reset_gpio, 0);  in elants_i2c_power_on()
1119 	struct elants_data *ts = _data;  in elants_i2c_power_off()  local
1121 	if (!IS_ERR_OR_NULL(ts->reset_gpio)) {  in elants_i2c_power_off()
1126 		gpiod_set_value_cansleep(ts->reset_gpio, 1);  in elants_i2c_power_off()
1127 		regulator_disable(ts->vccio);  in elants_i2c_power_off()
1128 		regulator_disable(ts->vcc33);  in elants_i2c_power_off()
1136 	struct elants_data *ts;  in elants_i2c_probe()  local
1146 	ts = devm_kzalloc(&client->dev, sizeof(struct elants_data), GFP_KERNEL);  in elants_i2c_probe()
1147 	if (!ts)  in elants_i2c_probe()
1150 	mutex_init(&ts->sysfs_mutex);  in elants_i2c_probe()
1151 	init_completion(&ts->cmd_done);  in elants_i2c_probe()
1153 	ts->client = client;  in elants_i2c_probe()
1154 	i2c_set_clientdata(client, ts);  in elants_i2c_probe()
1156 	ts->vcc33 = devm_regulator_get(&client->dev, "vcc33");  in elants_i2c_probe()
1157 	if (IS_ERR(ts->vcc33)) {  in elants_i2c_probe()
1158 		error = PTR_ERR(ts->vcc33);  in elants_i2c_probe()
1166 	ts->vccio = devm_regulator_get(&client->dev, "vccio");  in elants_i2c_probe()
1167 	if (IS_ERR(ts->vccio)) {  in elants_i2c_probe()
1168 		error = PTR_ERR(ts->vccio);  in elants_i2c_probe()
1176 	ts->reset_gpio = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_LOW);  in elants_i2c_probe()
1177 	if (IS_ERR(ts->reset_gpio)) {  in elants_i2c_probe()
1178 		error = PTR_ERR(ts->reset_gpio);  in elants_i2c_probe()
1190 		ts->keep_power_in_suspend = true;  in elants_i2c_probe()
1193 	error = elants_i2c_power_on(ts);  in elants_i2c_probe()
1197 	error = devm_add_action(&client->dev, elants_i2c_power_off, ts);  in elants_i2c_probe()
1201 		elants_i2c_power_off(ts);  in elants_i2c_probe()
1212 	error = elants_i2c_initialize(ts);  in elants_i2c_probe()
1218 	ts->input = devm_input_allocate_device(&client->dev);  in elants_i2c_probe()
1219 	if (!ts->input) {  in elants_i2c_probe()
1224 	ts->input->name = "Elan Touchscreen";  in elants_i2c_probe()
1225 	ts->input->id.bustype = BUS_I2C;  in elants_i2c_probe()
1227 	__set_bit(BTN_TOUCH, ts->input->keybit);  in elants_i2c_probe()
1228 	__set_bit(EV_ABS, ts->input->evbit);  in elants_i2c_probe()
1229 	__set_bit(EV_KEY, ts->input->evbit);  in elants_i2c_probe()
1232 	input_set_abs_params(ts->input, ABS_X, 0, ts->x_max, 0, 0);  in elants_i2c_probe()
1233 	input_set_abs_params(ts->input, ABS_Y, 0, ts->y_max, 0, 0);  in elants_i2c_probe()
1234 	input_set_abs_params(ts->input, ABS_PRESSURE, 0, 255, 0, 0);  in elants_i2c_probe()
1235 	input_abs_set_res(ts->input, ABS_X, ts->x_res);  in elants_i2c_probe()
1236 	input_abs_set_res(ts->input, ABS_Y, ts->y_res);  in elants_i2c_probe()
1239 	error = input_mt_init_slots(ts->input, MAX_CONTACT_NUM,  in elants_i2c_probe()
1247 	input_set_abs_params(ts->input, ABS_MT_POSITION_X, 0, ts->x_max, 0, 0);  in elants_i2c_probe()
1248 	input_set_abs_params(ts->input, ABS_MT_POSITION_Y, 0, ts->y_max, 0, 0);  in elants_i2c_probe()
1249 	input_set_abs_params(ts->input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);  in elants_i2c_probe()
1250 	input_set_abs_params(ts->input, ABS_MT_PRESSURE, 0, 255, 0, 0);  in elants_i2c_probe()
1251 	input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->x_res);  in elants_i2c_probe()
1252 	input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->y_res);  in elants_i2c_probe()
1254 	input_set_drvdata(ts->input, ts);  in elants_i2c_probe()
1256 	error = input_register_device(ts->input);  in elants_i2c_probe()
1272 					  client->name, ts);  in elants_i2c_probe()
1293 				elants_i2c_remove_sysfs_group, ts);  in elants_i2c_probe()
1295 		elants_i2c_remove_sysfs_group(ts);  in elants_i2c_probe()
1308 	struct elants_data *ts = i2c_get_clientdata(client);  in elants_i2c_suspend()  local
1314 	if (ts->iap_mode != ELAN_IAP_OPERATIONAL)  in elants_i2c_suspend()
1324 		ts->wake_irq_enabled = (enable_irq_wake(client->irq) == 0);  in elants_i2c_suspend()
1325 	} else if (ts->keep_power_in_suspend) {  in elants_i2c_suspend()
1336 		elants_i2c_power_off(ts);  in elants_i2c_suspend()
1345 	struct elants_data *ts = i2c_get_clientdata(client);  in elants_i2c_resume()  local
1351 		if (ts->wake_irq_enabled)  in elants_i2c_resume()
1354 	} else if (ts->keep_power_in_suspend) {  in elants_i2c_resume()
1365 		elants_i2c_power_on(ts);  in elants_i2c_resume()
1366 		elants_i2c_initialize(ts);  in elants_i2c_resume()
1369 	ts->state = ELAN_STATE_NORMAL;  in elants_i2c_resume()