118 	struct i2c_client *client;  member
146 static int elants_i2c_send(struct i2c_client *client,  in elants_i2c_send()  argument
151 	ret = i2c_master_send(client, data, size);  in elants_i2c_send()
158 	dev_err(&client->dev, "%s failed (%*ph): %d\n",  in elants_i2c_send()
164 static int elants_i2c_read(struct i2c_client *client, void *data, size_t size)  in elants_i2c_read()  argument
168 	ret = i2c_master_recv(client, data, size);  in elants_i2c_read()
175 	dev_err(&client->dev, "%s failed: %d\n", __func__, ret);  in elants_i2c_read()
180 static int elants_i2c_execute_command(struct i2c_client *client,  in elants_i2c_execute_command()  argument
198 		dev_err(&client->dev, "%s: invalid command %*ph\n",  in elants_i2c_execute_command()
203 	msgs[0].addr = client->addr;  in elants_i2c_execute_command()
204 	msgs[0].flags = client->flags & I2C_M_TEN;  in elants_i2c_execute_command()
208 	msgs[1].addr = client->addr;  in elants_i2c_execute_command()
209 	msgs[1].flags = client->flags & I2C_M_TEN;  in elants_i2c_execute_command()
214 	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));  in elants_i2c_execute_command()
226 	struct i2c_client *client = ts->client;  in elants_i2c_calibrate()  local
232 	disable_irq(client->irq);  in elants_i2c_calibrate()
237 	elants_i2c_send(client, w_flashkey, sizeof(w_flashkey));  in elants_i2c_calibrate()
238 	elants_i2c_send(client, rek, sizeof(rek));  in elants_i2c_calibrate()
240 	enable_irq(client->irq);  in elants_i2c_calibrate()
249 		dev_err(&client->dev,  in elants_i2c_calibrate()
256 		dev_err(&client->dev,  in elants_i2c_calibrate()
265 static int elants_i2c_sw_reset(struct i2c_client *client)  in elants_i2c_sw_reset()  argument
270 	error = elants_i2c_send(client, soft_rst_cmd,  in elants_i2c_sw_reset()
273 		dev_err(&client->dev, "software reset failed: %d\n", error);  in elants_i2c_sw_reset()
293 	struct i2c_client *client = ts->client;  in elants_i2c_query_fw_id()  local
299 		error = elants_i2c_execute_command(client, cmd, sizeof(cmd),  in elants_i2c_query_fw_id()
307 		dev_dbg(&client->dev, "read fw id error=%d, buf=%*phC\n",  in elants_i2c_query_fw_id()
311 	dev_err(&client->dev,  in elants_i2c_query_fw_id()
319 	struct i2c_client *client = ts->client;  in elants_i2c_query_fw_version()  local
325 		error = elants_i2c_execute_command(client, cmd, sizeof(cmd),  in elants_i2c_query_fw_version()
334 		dev_dbg(&client->dev, "read fw version error=%d, buf=%*phC\n",  in elants_i2c_query_fw_version()
338 	dev_err(&client->dev,  in elants_i2c_query_fw_version()
346 	struct i2c_client *client = ts->client;  in elants_i2c_query_test_version()  local
353 		error = elants_i2c_execute_command(client, cmd, sizeof(cmd),  in elants_i2c_query_test_version()
363 		dev_dbg(&client->dev,  in elants_i2c_query_test_version()
368 	dev_err(&client->dev, "Failed to read test version\n");  in elants_i2c_query_test_version()
375 	struct i2c_client *client = ts->client;  in elants_i2c_query_bc_version()  local
381 	error = elants_i2c_execute_command(client, cmd, sizeof(cmd),  in elants_i2c_query_bc_version()
384 		dev_err(&client->dev,  in elants_i2c_query_bc_version()
399 	struct i2c_client *client = ts->client;  in elants_i2c_query_ts_info()  local
417 	error = elants_i2c_execute_command(client,  in elants_i2c_query_ts_info()
422 		dev_err(&client->dev, "get resolution command failed: %d\n",  in elants_i2c_query_ts_info()
431 	error = elants_i2c_execute_command(client,  in elants_i2c_query_ts_info()
435 		dev_err(&client->dev, "get osr command failed: %d\n",  in elants_i2c_query_ts_info()
442 	error = elants_i2c_execute_command(client,  in elants_i2c_query_ts_info()
447 		dev_err(&client->dev, "get physical scan command failed: %d\n",  in elants_i2c_query_ts_info()
454 	error = elants_i2c_execute_command(client,  in elants_i2c_query_ts_info()
459 		dev_err(&client->dev, "get physical drive command failed: %d\n",  in elants_i2c_query_ts_info()
466 	dev_dbg(&client->dev, "phy_x=%d, phy_y=%d\n", phy_x, phy_y);  in elants_i2c_query_ts_info()
469 		dev_warn(&client->dev,  in elants_i2c_query_ts_info()
483 static int elants_i2c_fastboot(struct i2c_client *client)  in elants_i2c_fastboot()  argument
488 	error = elants_i2c_send(client, boot_cmd, sizeof(boot_cmd));  in elants_i2c_fastboot()
490 		dev_err(&client->dev, "boot failed: %d\n", error);  in elants_i2c_fastboot()
494 	dev_dbg(&client->dev, "boot success -- 0x%x\n", client->addr);  in elants_i2c_fastboot()
500 	struct i2c_client *client = ts->client;  in elants_i2c_initialize()  local
507 		error = elants_i2c_sw_reset(client);  in elants_i2c_initialize()
514 		error = elants_i2c_fastboot(client);  in elants_i2c_initialize()
524 		error = elants_i2c_read(client, buf, sizeof(buf));  in elants_i2c_initialize()
526 			dev_err(&client->dev,  in elants_i2c_initialize()
540 			dev_err(&client->dev,  in elants_i2c_initialize()
566 static int elants_i2c_fw_write_page(struct i2c_client *client,  in elants_i2c_fw_write_page()  argument
575 		error = elants_i2c_send(client, page, ELAN_FW_PAGESIZE);  in elants_i2c_fw_write_page()
577 			dev_err(&client->dev,  in elants_i2c_fw_write_page()
582 		error = elants_i2c_read(client, buf, 2);  in elants_i2c_fw_write_page()
584 			dev_err(&client->dev,  in elants_i2c_fw_write_page()
593 		dev_err(&client->dev,  in elants_i2c_fw_write_page()
601 static int elants_i2c_do_update_firmware(struct i2c_client *client,  in elants_i2c_do_update_firmware()  argument
615 		dev_dbg(&client->dev, "Recovery mode procedure\n");  in elants_i2c_do_update_firmware()
616 		error = elants_i2c_send(client, enter_iap2, sizeof(enter_iap2));  in elants_i2c_do_update_firmware()
619 		dev_dbg(&client->dev, "Normal IAP procedure\n");  in elants_i2c_do_update_firmware()
620 		elants_i2c_sw_reset(client);  in elants_i2c_do_update_firmware()
622 		error = elants_i2c_send(client, enter_iap, sizeof(enter_iap));  in elants_i2c_do_update_firmware()
626 		dev_err(&client->dev, "failed to enter IAP mode: %d\n", error);  in elants_i2c_do_update_firmware()
633 	error = elants_i2c_read(client, buf, 4);  in elants_i2c_do_update_firmware()
635 		dev_err(&client->dev,  in elants_i2c_do_update_firmware()
642 		dev_err(&client->dev,  in elants_i2c_do_update_firmware()
648 	dev_info(&client->dev, "successfully entered IAP mode");  in elants_i2c_do_update_firmware()
650 	send_id = client->addr;  in elants_i2c_do_update_firmware()
651 	error = elants_i2c_send(client, &send_id, 1);  in elants_i2c_do_update_firmware()
653 		dev_err(&client->dev, "sending dummy byte failed: %d\n",  in elants_i2c_do_update_firmware()
659 	error = elants_i2c_send(client, fw->data, ELAN_FW_PAGESIZE);  in elants_i2c_do_update_firmware()
661 		dev_err(&client->dev, "clearing of the last page failed: %d\n",  in elants_i2c_do_update_firmware()
666 	error = elants_i2c_read(client, buf, 2);  in elants_i2c_do_update_firmware()
668 		dev_err(&client->dev,  in elants_i2c_do_update_firmware()
675 	dev_dbg(&client->dev, "IAP Pages = %d\n", n_fw_pages);  in elants_i2c_do_update_firmware()
678 		error = elants_i2c_fw_write_page(client,  in elants_i2c_do_update_firmware()
681 			dev_err(&client->dev,  in elants_i2c_do_update_firmware()
691 	dev_info(&client->dev, "firmware update completed\n");  in elants_i2c_do_update_firmware()
697 	struct i2c_client *client = ts->client;  in elants_i2c_fw_update()  local
706 	dev_info(&client->dev, "requesting fw name = %s\n", fw_name);  in elants_i2c_fw_update()
707 	error = request_firmware(&fw, fw_name, &client->dev);  in elants_i2c_fw_update()
710 		dev_err(&client->dev, "failed to request firmware: %d\n",  in elants_i2c_fw_update()
716 		dev_err(&client->dev, "invalid firmware length: %zu\n",  in elants_i2c_fw_update()
722 	disable_irq(client->irq);  in elants_i2c_fw_update()
724 	error = elants_i2c_do_update_firmware(client, fw,  in elants_i2c_fw_update()
727 		dev_err(&client->dev, "firmware update failed: %d\n", error);  in elants_i2c_fw_update()
734 		dev_err(&client->dev,  in elants_i2c_fw_update()
745 	enable_irq(client->irq);  in elants_i2c_fw_update()
770 	dev_dbg(&ts->client->dev,  in elants_i2c_mt_event()
784 			dev_dbg(&ts->client->dev, "i=%d x=%d y=%d p=%d w=%d\n",  in elants_i2c_mt_event()
820 		dev_warn(&ts->client->dev,  in elants_i2c_event()
825 		dev_warn(&ts->client->dev,  in elants_i2c_event()
836 	struct i2c_client *client = ts->client;  in elants_i2c_irq()  local
841 	len = i2c_master_recv(client, ts->buf, sizeof(ts->buf));  in elants_i2c_irq()
843 		dev_err(&client->dev, "%s: failed to read data: %d\n",  in elants_i2c_irq()
848 	dev_dbg(&client->dev, "%s: packet %*ph\n",  in elants_i2c_irq()
877 				dev_err(&client->dev,  in elants_i2c_irq()
893 				dev_err(&client->dev,  in elants_i2c_irq()
901 				dev_err(&client->dev,  in elants_i2c_irq()
915 			dev_err(&client->dev, "unknown packet %*ph\n",  in elants_i2c_irq()
933 	struct i2c_client *client = to_i2c_client(dev);  in calibrate_store()  local
934 	struct elants_data *ts = i2c_get_clientdata(client);  in calibrate_store()
951 	struct i2c_client *client = to_i2c_client(dev);  in write_update_fw()  local
952 	struct elants_data *ts = i2c_get_clientdata(client);  in write_update_fw()
969 	struct i2c_client *client = to_i2c_client(dev);  in show_iap_mode()  local
970 	struct elants_data *ts = i2c_get_clientdata(client);  in show_iap_mode()
1004 	struct i2c_client *client = to_i2c_client(dev);  in elants_version_attribute_show()  local
1005 	struct elants_data *ts = i2c_get_clientdata(client);  in elants_version_attribute_show()
1052 	sysfs_remove_group(&ts->client->dev.kobj, &elants_attribute_group);  in elants_i2c_remove_sysfs_group()
1055 static int elants_i2c_probe(struct i2c_client *client,  in elants_i2c_probe()  argument
1063 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {  in elants_i2c_probe()
1064 		dev_err(&client->dev,  in elants_i2c_probe()
1070 	if (i2c_smbus_xfer(client->adapter, client->addr, 0,  in elants_i2c_probe()
1072 		dev_err(&client->dev, "nothing at this address\n");  in elants_i2c_probe()
1076 	ts = devm_kzalloc(&client->dev, sizeof(struct elants_data), GFP_KERNEL);  in elants_i2c_probe()
1083 	ts->client = client;  in elants_i2c_probe()
1084 	i2c_set_clientdata(client, ts);  in elants_i2c_probe()
1088 		dev_err(&client->dev, "failed to initialize: %d\n", error);  in elants_i2c_probe()
1092 	ts->input = devm_input_allocate_device(&client->dev);  in elants_i2c_probe()
1094 		dev_err(&client->dev, "Failed to allocate input device\n");  in elants_i2c_probe()
1116 		dev_err(&client->dev,  in elants_i2c_probe()
1132 		dev_err(&client->dev,  in elants_i2c_probe()
1141 	irqflags = client->dev.of_node ? 0 : IRQF_TRIGGER_FALLING;  in elants_i2c_probe()
1143 	error = devm_request_threaded_irq(&client->dev, client->irq,  in elants_i2c_probe()
1146 					  client->name, ts);  in elants_i2c_probe()
1148 		dev_err(&client->dev, "Failed to register interrupt\n");  in elants_i2c_probe()
1156 	if (!client->dev.of_node)  in elants_i2c_probe()
1157 		device_init_wakeup(&client->dev, true);  in elants_i2c_probe()
1159 	error = sysfs_create_group(&client->dev.kobj, &elants_attribute_group);  in elants_i2c_probe()
1161 		dev_err(&client->dev, "failed to create sysfs attributes: %d\n",  in elants_i2c_probe()
1166 	error = devm_add_action(&client->dev,  in elants_i2c_probe()
1170 		dev_err(&client->dev,  in elants_i2c_probe()
1181 	struct i2c_client *client = to_i2c_client(dev);  in elants_i2c_suspend()  local
1182 	struct elants_data *ts = i2c_get_clientdata(client);  in elants_i2c_suspend()
1191 	disable_irq(client->irq);  in elants_i2c_suspend()
1194 		error = elants_i2c_send(client, set_sleep_cmd,  in elants_i2c_suspend()
1199 		dev_err(&client->dev, "suspend command failed: %d\n", error);  in elants_i2c_suspend()
1203 		ts->wake_irq_enabled = (enable_irq_wake(client->irq) == 0);  in elants_i2c_suspend()
1210 	struct i2c_client *client = to_i2c_client(dev);  in elants_i2c_resume()  local
1211 	struct elants_data *ts = i2c_get_clientdata(client);  in elants_i2c_resume()
1217 		disable_irq_wake(client->irq);  in elants_i2c_resume()
1220 		error = elants_i2c_send(client, set_active_cmd,  in elants_i2c_resume()
1225 		dev_err(&client->dev, "resume command failed: %d\n", error);  in elants_i2c_resume()
1229 	enable_irq(client->irq);  in elants_i2c_resume()