118 	struct i2c_client *client;  member
152 static int elants_i2c_send(struct i2c_client *client,  in elants_i2c_send()  argument
157 	ret = i2c_master_send(client, data, size);  in elants_i2c_send()
164 	dev_err(&client->dev, "%s failed (%*ph): %d\n",  in elants_i2c_send()
170 static int elants_i2c_read(struct i2c_client *client, void *data, size_t size)  in elants_i2c_read()  argument
174 	ret = i2c_master_recv(client, data, size);  in elants_i2c_read()
181 	dev_err(&client->dev, "%s failed: %d\n", __func__, ret);  in elants_i2c_read()
186 static int elants_i2c_execute_command(struct i2c_client *client,  in elants_i2c_execute_command()  argument
204 		dev_err(&client->dev, "%s: invalid command %*ph\n",  in elants_i2c_execute_command()
209 	msgs[0].addr = client->addr;  in elants_i2c_execute_command()
210 	msgs[0].flags = client->flags & I2C_M_TEN;  in elants_i2c_execute_command()
214 	msgs[1].addr = client->addr;  in elants_i2c_execute_command()
215 	msgs[1].flags = client->flags & I2C_M_TEN;  in elants_i2c_execute_command()
220 	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));  in elants_i2c_execute_command()
232 	struct i2c_client *client = ts->client;  in elants_i2c_calibrate()  local
238 	disable_irq(client->irq);  in elants_i2c_calibrate()
243 	elants_i2c_send(client, w_flashkey, sizeof(w_flashkey));  in elants_i2c_calibrate()
244 	elants_i2c_send(client, rek, sizeof(rek));  in elants_i2c_calibrate()
246 	enable_irq(client->irq);  in elants_i2c_calibrate()
255 		dev_err(&client->dev,  in elants_i2c_calibrate()
262 		dev_err(&client->dev,  in elants_i2c_calibrate()
271 static int elants_i2c_sw_reset(struct i2c_client *client)  in elants_i2c_sw_reset()  argument
276 	error = elants_i2c_send(client, soft_rst_cmd,  in elants_i2c_sw_reset()
279 		dev_err(&client->dev, "software reset failed: %d\n", error);  in elants_i2c_sw_reset()
299 	struct i2c_client *client = ts->client;  in elants_i2c_query_hw_version()  local
305 		error = elants_i2c_execute_command(client, cmd, sizeof(cmd),  in elants_i2c_query_hw_version()
313 		dev_dbg(&client->dev, "read fw id error=%d, buf=%*phC\n",  in elants_i2c_query_hw_version()
318 		dev_err(&client->dev,  in elants_i2c_query_hw_version()
323 	dev_err(&client->dev, "Invalid fw id: %#04x\n", ts->hw_version);  in elants_i2c_query_hw_version()
330 	struct i2c_client *client = ts->client;  in elants_i2c_query_fw_version()  local
336 		error = elants_i2c_execute_command(client, cmd, sizeof(cmd),  in elants_i2c_query_fw_version()
345 		dev_dbg(&client->dev, "read fw version error=%d, buf=%*phC\n",  in elants_i2c_query_fw_version()
349 	dev_err(&client->dev,  in elants_i2c_query_fw_version()
357 	struct i2c_client *client = ts->client;  in elants_i2c_query_test_version()  local
364 		error = elants_i2c_execute_command(client, cmd, sizeof(cmd),  in elants_i2c_query_test_version()
374 		dev_dbg(&client->dev,  in elants_i2c_query_test_version()
379 	dev_err(&client->dev, "Failed to read test version\n");  in elants_i2c_query_test_version()
386 	struct i2c_client *client = ts->client;  in elants_i2c_query_bc_version()  local
392 	error = elants_i2c_execute_command(client, cmd, sizeof(cmd),  in elants_i2c_query_bc_version()
395 		dev_err(&client->dev,  in elants_i2c_query_bc_version()
410 	struct i2c_client *client = ts->client;  in elants_i2c_query_ts_info()  local
428 	error = elants_i2c_execute_command(client,  in elants_i2c_query_ts_info()
433 		dev_err(&client->dev, "get resolution command failed: %d\n",  in elants_i2c_query_ts_info()
442 	error = elants_i2c_execute_command(client,  in elants_i2c_query_ts_info()
446 		dev_err(&client->dev, "get osr command failed: %d\n",  in elants_i2c_query_ts_info()
453 	error = elants_i2c_execute_command(client,  in elants_i2c_query_ts_info()
458 		dev_err(&client->dev, "get physical scan command failed: %d\n",  in elants_i2c_query_ts_info()
465 	error = elants_i2c_execute_command(client,  in elants_i2c_query_ts_info()
470 		dev_err(&client->dev, "get physical drive command failed: %d\n",  in elants_i2c_query_ts_info()
477 	dev_dbg(&client->dev, "phy_x=%d, phy_y=%d\n", phy_x, phy_y);  in elants_i2c_query_ts_info()
480 		dev_warn(&client->dev,  in elants_i2c_query_ts_info()
494 static int elants_i2c_fastboot(struct i2c_client *client)  in elants_i2c_fastboot()  argument
499 	error = elants_i2c_send(client, boot_cmd, sizeof(boot_cmd));  in elants_i2c_fastboot()
501 		dev_err(&client->dev, "boot failed: %d\n", error);  in elants_i2c_fastboot()
505 	dev_dbg(&client->dev, "boot success -- 0x%x\n", client->addr);  in elants_i2c_fastboot()
511 	struct i2c_client *client = ts->client;  in elants_i2c_initialize()  local
518 		error = elants_i2c_sw_reset(client);  in elants_i2c_initialize()
525 		error = elants_i2c_fastboot(client);  in elants_i2c_initialize()
535 		error = elants_i2c_read(client, buf, sizeof(buf));  in elants_i2c_initialize()
537 			dev_err(&client->dev,  in elants_i2c_initialize()
551 			dev_err(&client->dev,  in elants_i2c_initialize()
581 static int elants_i2c_fw_write_page(struct i2c_client *client,  in elants_i2c_fw_write_page()  argument
590 		error = elants_i2c_send(client, page, ELAN_FW_PAGESIZE);  in elants_i2c_fw_write_page()
592 			dev_err(&client->dev,  in elants_i2c_fw_write_page()
597 		error = elants_i2c_read(client, buf, 2);  in elants_i2c_fw_write_page()
599 			dev_err(&client->dev,  in elants_i2c_fw_write_page()
608 		dev_err(&client->dev,  in elants_i2c_fw_write_page()
616 static int elants_i2c_do_update_firmware(struct i2c_client *client,  in elants_i2c_do_update_firmware()  argument
631 		dev_dbg(&client->dev, "Recovery mode procedure\n");  in elants_i2c_do_update_firmware()
632 		error = elants_i2c_send(client, enter_iap2, sizeof(enter_iap2));  in elants_i2c_do_update_firmware()
635 		dev_dbg(&client->dev, "Normal IAP procedure\n");  in elants_i2c_do_update_firmware()
637 		error = elants_i2c_send(client, close_idle, sizeof(close_idle));  in elants_i2c_do_update_firmware()
639 			dev_err(&client->dev, "Failed close idle: %d\n", error);  in elants_i2c_do_update_firmware()
641 		elants_i2c_sw_reset(client);  in elants_i2c_do_update_firmware()
643 		error = elants_i2c_send(client, enter_iap, sizeof(enter_iap));  in elants_i2c_do_update_firmware()
647 		dev_err(&client->dev, "failed to enter IAP mode: %d\n", error);  in elants_i2c_do_update_firmware()
654 	error = elants_i2c_read(client, buf, 4);  in elants_i2c_do_update_firmware()
656 		dev_err(&client->dev,  in elants_i2c_do_update_firmware()
663 		dev_err(&client->dev,  in elants_i2c_do_update_firmware()
669 	dev_info(&client->dev, "successfully entered IAP mode");  in elants_i2c_do_update_firmware()
671 	send_id = client->addr;  in elants_i2c_do_update_firmware()
672 	error = elants_i2c_send(client, &send_id, 1);  in elants_i2c_do_update_firmware()
674 		dev_err(&client->dev, "sending dummy byte failed: %d\n",  in elants_i2c_do_update_firmware()
680 	error = elants_i2c_send(client, fw->data, ELAN_FW_PAGESIZE);  in elants_i2c_do_update_firmware()
682 		dev_err(&client->dev, "clearing of the last page failed: %d\n",  in elants_i2c_do_update_firmware()
687 	error = elants_i2c_read(client, buf, 2);  in elants_i2c_do_update_firmware()
689 		dev_err(&client->dev,  in elants_i2c_do_update_firmware()
696 	dev_dbg(&client->dev, "IAP Pages = %d\n", n_fw_pages);  in elants_i2c_do_update_firmware()
699 		error = elants_i2c_fw_write_page(client,  in elants_i2c_do_update_firmware()
702 			dev_err(&client->dev,  in elants_i2c_do_update_firmware()
712 	dev_info(&client->dev, "firmware update completed\n");  in elants_i2c_do_update_firmware()
718 	struct i2c_client *client = ts->client;  in elants_i2c_fw_update()  local
727 	dev_info(&client->dev, "requesting fw name = %s\n", fw_name);  in elants_i2c_fw_update()
728 	error = request_firmware(&fw, fw_name, &client->dev);  in elants_i2c_fw_update()
731 		dev_err(&client->dev, "failed to request firmware: %d\n",  in elants_i2c_fw_update()
737 		dev_err(&client->dev, "invalid firmware length: %zu\n",  in elants_i2c_fw_update()
743 	disable_irq(client->irq);  in elants_i2c_fw_update()
745 	error = elants_i2c_do_update_firmware(client, fw,  in elants_i2c_fw_update()
748 		dev_err(&client->dev, "firmware update failed: %d\n", error);  in elants_i2c_fw_update()
755 		dev_err(&client->dev,  in elants_i2c_fw_update()
766 	enable_irq(client->irq);  in elants_i2c_fw_update()
791 	dev_dbg(&ts->client->dev,  in elants_i2c_mt_event()
805 			dev_dbg(&ts->client->dev, "i=%d x=%d y=%d p=%d w=%d\n",  in elants_i2c_mt_event()
841 		dev_warn(&ts->client->dev,  in elants_i2c_event()
846 		dev_warn(&ts->client->dev,  in elants_i2c_event()
857 	struct i2c_client *client = ts->client;  in elants_i2c_irq()  local
862 	len = i2c_master_recv_dmasafe(client, ts->buf, sizeof(ts->buf));  in elants_i2c_irq()
864 		dev_err(&client->dev, "%s: failed to read data: %d\n",  in elants_i2c_irq()
869 	dev_dbg(&client->dev, "%s: packet %*ph\n",  in elants_i2c_irq()
898 				dev_err(&client->dev,  in elants_i2c_irq()
914 				dev_err(&client->dev,  in elants_i2c_irq()
922 				dev_err(&client->dev,  in elants_i2c_irq()
936 			dev_err(&client->dev, "unknown packet %*ph\n",  in elants_i2c_irq()
954 	struct i2c_client *client = to_i2c_client(dev);  in calibrate_store()  local
955 	struct elants_data *ts = i2c_get_clientdata(client);  in calibrate_store()
972 	struct i2c_client *client = to_i2c_client(dev);  in write_update_fw()  local
973 	struct elants_data *ts = i2c_get_clientdata(client);  in write_update_fw()
990 	struct i2c_client *client = to_i2c_client(dev);  in show_iap_mode()  local
991 	struct elants_data *ts = i2c_get_clientdata(client);  in show_iap_mode()
1025 	struct i2c_client *client = to_i2c_client(dev);  in elants_version_attribute_show()  local
1026 	struct elants_data *ts = i2c_get_clientdata(client);  in elants_version_attribute_show()
1084 		dev_err(&ts->client->dev,  in elants_i2c_power_on()
1092 		dev_err(&ts->client->dev,  in elants_i2c_power_on()
1130 static int elants_i2c_probe(struct i2c_client *client,  in elants_i2c_probe()  argument
1138 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {  in elants_i2c_probe()
1139 		dev_err(&client->dev,  in elants_i2c_probe()
1144 	ts = devm_kzalloc(&client->dev, sizeof(struct elants_data), GFP_KERNEL);  in elants_i2c_probe()
1151 	ts->client = client;  in elants_i2c_probe()
1152 	i2c_set_clientdata(client, ts);  in elants_i2c_probe()
1154 	ts->vcc33 = devm_regulator_get(&client->dev, "vcc33");  in elants_i2c_probe()
1158 			dev_err(&client->dev,  in elants_i2c_probe()
1164 	ts->vccio = devm_regulator_get(&client->dev, "vccio");  in elants_i2c_probe()
1168 			dev_err(&client->dev,  in elants_i2c_probe()
1174 	ts->reset_gpio = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_LOW);  in elants_i2c_probe()
1182 			dev_err(&client->dev,  in elants_i2c_probe()
1195 	error = devm_add_action(&client->dev, elants_i2c_power_off, ts);  in elants_i2c_probe()
1197 		dev_err(&client->dev,  in elants_i2c_probe()
1204 	if (i2c_smbus_xfer(client->adapter, client->addr, 0,  in elants_i2c_probe()
1206 		dev_err(&client->dev, "nothing at this address\n");  in elants_i2c_probe()
1212 		dev_err(&client->dev, "failed to initialize: %d\n", error);  in elants_i2c_probe()
1216 	ts->input = devm_input_allocate_device(&client->dev);  in elants_i2c_probe()
1218 		dev_err(&client->dev, "Failed to allocate input device\n");  in elants_i2c_probe()
1240 		dev_err(&client->dev,  in elants_i2c_probe()
1254 		dev_err(&client->dev,  in elants_i2c_probe()
1264 	irqflags = irq_get_trigger_type(client->irq);  in elants_i2c_probe()
1268 	error = devm_request_threaded_irq(&client->dev, client->irq,  in elants_i2c_probe()
1271 					  client->name, ts);  in elants_i2c_probe()
1273 		dev_err(&client->dev, "Failed to register interrupt\n");  in elants_i2c_probe()
1281 	if (!client->dev.of_node)  in elants_i2c_probe()
1282 		device_init_wakeup(&client->dev, true);  in elants_i2c_probe()
1284 	error = devm_device_add_group(&client->dev, &elants_attribute_group);  in elants_i2c_probe()
1286 		dev_err(&client->dev, "failed to create sysfs attributes: %d\n",  in elants_i2c_probe()
1296 	struct i2c_client *client = to_i2c_client(dev);  in elants_i2c_suspend()  local
1297 	struct elants_data *ts = i2c_get_clientdata(client);  in elants_i2c_suspend()
1306 	disable_irq(client->irq);  in elants_i2c_suspend()
1313 		ts->wake_irq_enabled = (enable_irq_wake(client->irq) == 0);  in elants_i2c_suspend()
1316 			error = elants_i2c_send(client, set_sleep_cmd,  in elants_i2c_suspend()
1321 			dev_err(&client->dev,  in elants_i2c_suspend()
1333 	struct i2c_client *client = to_i2c_client(dev);  in elants_i2c_resume()  local
1334 	struct elants_data *ts = i2c_get_clientdata(client);  in elants_i2c_resume()
1341 			disable_irq_wake(client->irq);  in elants_i2c_resume()
1342 		elants_i2c_sw_reset(client);  in elants_i2c_resume()
1345 			error = elants_i2c_send(client, set_active_cmd,  in elants_i2c_resume()
1350 			dev_err(&client->dev,  in elants_i2c_resume()
1359 	enable_irq(client->irq);  in elants_i2c_resume()