211 	int error;  in ims_pcu_setup_buttons()  local
242 	error = input_register_device(input);  in ims_pcu_setup_buttons()
243 	if (error) {  in ims_pcu_setup_buttons()
246 			error);  in ims_pcu_setup_buttons()
248 		return error;  in ims_pcu_setup_buttons()
293 	int error;  in ims_pcu_setup_gamepad()  local
300 		error = -ENOMEM;  in ims_pcu_setup_gamepad()
329 	error = input_register_device(input);  in ims_pcu_setup_gamepad()
330 	if (error) {  in ims_pcu_setup_gamepad()
333 			error);  in ims_pcu_setup_gamepad()
517 	int error;  in ims_pcu_send_cmd_chunk()  local
519 	error = usb_bulk_msg(pcu->udev,  in ims_pcu_send_cmd_chunk()
524 	if (error < 0) {  in ims_pcu_send_cmd_chunk()
527 			command, chunk, error);  in ims_pcu_send_cmd_chunk()
528 		return error;  in ims_pcu_send_cmd_chunk()
541 	int error;  in ims_pcu_send_command()  local
565 			error = ims_pcu_send_cmd_chunk(pcu, command,  in ims_pcu_send_command()
567 			if (error)  in ims_pcu_send_command()
568 				return error;  in ims_pcu_send_command()
584 		error = ims_pcu_send_cmd_chunk(pcu, command, ++chunk, count);  in ims_pcu_send_command()
585 		if (error)  in ims_pcu_send_command()
586 			return error;  in ims_pcu_send_command()
604 	int error;  in __ims_pcu_execute_command()  local
609 	error = ims_pcu_send_command(pcu, command, data, len);  in __ims_pcu_execute_command()
610 	if (error)  in __ims_pcu_execute_command()
611 		return error;  in __ims_pcu_execute_command()
658 	int error;  in __ims_pcu_execute_bl_command()  local
664 	error = __ims_pcu_execute_command(pcu,  in __ims_pcu_execute_bl_command()
668 	if (error) {  in __ims_pcu_execute_bl_command()
671 			pcu->cmd_buf[0], error);  in __ims_pcu_execute_bl_command()
672 		return error;  in __ims_pcu_execute_bl_command()
698 	int error;  in ims_pcu_get_info()  local
700 	error = ims_pcu_execute_query(pcu, GET_INFO);  in ims_pcu_get_info()
701 	if (error) {  in ims_pcu_get_info()
703 			"GET_INFO command failed, error: %d\n", error);  in ims_pcu_get_info()
704 		return error;  in ims_pcu_get_info()
722 	int error;  in ims_pcu_set_info()  local
731 	error = ims_pcu_execute_command(pcu, SET_INFO,  in ims_pcu_set_info()
734 	if (error) {  in ims_pcu_set_info()
737 			error);  in ims_pcu_set_info()
738 		return error;  in ims_pcu_set_info()
746 	int error;  in ims_pcu_switch_to_bootloader()  local
749 	error = ims_pcu_execute_command(pcu, JUMP_TO_BTLDR, NULL, 0);  in ims_pcu_switch_to_bootloader()
750 	if (error) {  in ims_pcu_switch_to_bootloader()
753 			error);  in ims_pcu_switch_to_bootloader()
754 		return error;  in ims_pcu_switch_to_bootloader()
789 	int error;  in ims_pcu_verify_block()  local
795 	error = ims_pcu_execute_bl_command(pcu, READ_APP, NULL, 5,  in ims_pcu_verify_block()
797 	if (error) {  in ims_pcu_verify_block()
800 			addr, len, error);  in ims_pcu_verify_block()
801 		return error;  in ims_pcu_verify_block()
833 	int error;  in ims_pcu_flash_firmware()  local
835 	error = ims_pcu_execute_bl_command(pcu, ERASE_APP, NULL, 0, 2000);  in ims_pcu_flash_firmware()
836 	if (error) {  in ims_pcu_flash_firmware()
839 			error);  in ims_pcu_flash_firmware()
840 		return error;  in ims_pcu_flash_firmware()
858 		error = ims_pcu_execute_bl_command(pcu, PROGRAM_DEVICE,  in ims_pcu_flash_firmware()
861 		if (error) {  in ims_pcu_flash_firmware()
864 				addr, len, error);  in ims_pcu_flash_firmware()
865 			return error;  in ims_pcu_flash_firmware()
869 			error = ims_pcu_verify_block(pcu, addr, len, rec->data);  in ims_pcu_flash_firmware()
870 			if (error)  in ims_pcu_flash_firmware()
871 				return error;  in ims_pcu_flash_firmware()
880 	error = ims_pcu_execute_bl_command(pcu, PROGRAM_COMPLETE,  in ims_pcu_flash_firmware()
882 	if (error)  in ims_pcu_flash_firmware()
885 			error);  in ims_pcu_flash_firmware()
921 	int error;  in ims_pcu_process_async_firmware()  local
929 	error = ihex_validate_fw(fw);  in ims_pcu_process_async_firmware()
930 	if (error) {  in ims_pcu_process_async_firmware()
960 	int error;  in ims_pcu_backlight_work()  local
964 	error = ims_pcu_execute_command(pcu, SET_BRIGHTNESS,  in ims_pcu_backlight_work()
966 	if (error && error != -ENODEV)  in ims_pcu_backlight_work()
969 			 desired_brightness, error);  in ims_pcu_backlight_work()
992 	int error;  in ims_pcu_backlight_get_brightness()  local
996 	error = ims_pcu_execute_query(pcu, GET_BRIGHTNESS);  in ims_pcu_backlight_get_brightness()
997 	if (error) {  in ims_pcu_backlight_get_brightness()
1000 			 error);  in ims_pcu_backlight_get_brightness()
1016 	int error;  in ims_pcu_setup_backlight()  local
1027 	error = led_classdev_register(pcu->dev, &backlight->cdev);  in ims_pcu_setup_backlight()
1028 	if (error) {  in ims_pcu_setup_backlight()
1031 			error);  in ims_pcu_setup_backlight()
1032 		return error;  in ims_pcu_setup_backlight()
1081 	int error;  in ims_pcu_attribute_store()  local
1090 	error = mutex_lock_interruptible(&pcu->cmd_mutex);  in ims_pcu_attribute_store()
1091 	if (error)  in ims_pcu_attribute_store()
1092 		return error;  in ims_pcu_attribute_store()
1097 	error = ims_pcu_set_info(pcu);  in ims_pcu_attribute_store()
1107 	return error < 0 ? error : count;  in ims_pcu_attribute_store()
1140 	int error;  in ims_pcu_reset_device()  local
1142 	error = kstrtoint(buf, 0, &value);  in ims_pcu_reset_device()
1143 	if (error)  in ims_pcu_reset_device()
1144 		return error;  in ims_pcu_reset_device()
1151 	error = ims_pcu_execute_command(pcu, PCU_RESET, &reset_byte, 1);  in ims_pcu_reset_device()
1152 	if (error) {  in ims_pcu_reset_device()
1155 			 error);  in ims_pcu_reset_device()
1156 		return error;  in ims_pcu_reset_device()
1172 	int error;  in ims_pcu_update_firmware_store()  local
1174 	error = kstrtoint(buf, 0, &value);  in ims_pcu_update_firmware_store()
1175 	if (error)  in ims_pcu_update_firmware_store()
1176 		return error;  in ims_pcu_update_firmware_store()
1181 	error = mutex_lock_interruptible(&pcu->cmd_mutex);  in ims_pcu_update_firmware_store()
1182 	if (error)  in ims_pcu_update_firmware_store()
1183 		return error;  in ims_pcu_update_firmware_store()
1185 	error = request_ihex_firmware(&fw, IMS_PCU_FIRMWARE_NAME, pcu->dev);  in ims_pcu_update_firmware_store()
1186 	if (error) {  in ims_pcu_update_firmware_store()
1188 			IMS_PCU_FIRMWARE_NAME, error);  in ims_pcu_update_firmware_store()
1201 		error = ims_pcu_handle_firmware_update(pcu, fw);  in ims_pcu_update_firmware_store()
1203 		error = ims_pcu_switch_to_bootloader(pcu);  in ims_pcu_update_firmware_store()
1209 	return error ?: count;  in ims_pcu_update_firmware_store()
1275 	int error;  in ims_pcu_read_ofn_config()  local
1278 	error = ims_pcu_execute_command(pcu, OFN_GET_CONFIG,  in ims_pcu_read_ofn_config()
1280 	if (error)  in ims_pcu_read_ofn_config()
1281 		return error;  in ims_pcu_read_ofn_config()
1295 	int error;  in ims_pcu_write_ofn_config()  local
1298 	error = ims_pcu_execute_command(pcu, OFN_SET_CONFIG,  in ims_pcu_write_ofn_config()
1300 	if (error)  in ims_pcu_write_ofn_config()
1301 		return error;  in ims_pcu_write_ofn_config()
1316 	int error;  in ims_pcu_ofn_reg_data_show()  local
1320 	error = ims_pcu_read_ofn_config(pcu, pcu->ofn_reg_addr, &data);  in ims_pcu_ofn_reg_data_show()
1323 	if (error)  in ims_pcu_ofn_reg_data_show()
1324 		return error;  in ims_pcu_ofn_reg_data_show()
1335 	int error;  in ims_pcu_ofn_reg_data_store()  local
1338 	error = kstrtou8(buf, 0, &value);  in ims_pcu_ofn_reg_data_store()
1339 	if (error)  in ims_pcu_ofn_reg_data_store()
1340 		return error;  in ims_pcu_ofn_reg_data_store()
1343 	error = ims_pcu_write_ofn_config(pcu, pcu->ofn_reg_addr, value);  in ims_pcu_ofn_reg_data_store()
1346 	return error ?: count;  in ims_pcu_ofn_reg_data_store()
1358 	int error;  in ims_pcu_ofn_reg_addr_show()  local
1361 	error = scnprintf(buf, PAGE_SIZE, "%x\n", pcu->ofn_reg_addr);  in ims_pcu_ofn_reg_addr_show()
1364 	return error;  in ims_pcu_ofn_reg_addr_show()
1373 	int error;  in ims_pcu_ofn_reg_addr_store()  local
1376 	error = kstrtou8(buf, 0, &value);  in ims_pcu_ofn_reg_addr_store()
1377 	if (error)  in ims_pcu_ofn_reg_addr_store()
1378 		return error;  in ims_pcu_ofn_reg_addr_store()
1404 	int error;  in ims_pcu_ofn_bit_show()  local
1408 	error = ims_pcu_read_ofn_config(pcu, attr->addr, &data);  in ims_pcu_ofn_bit_show()
1411 	if (error)  in ims_pcu_ofn_bit_show()
1412 		return error;  in ims_pcu_ofn_bit_show()
1425 	int error;  in ims_pcu_ofn_bit_store()  local
1429 	error = kstrtoint(buf, 0, &value);  in ims_pcu_ofn_bit_store()
1430 	if (error)  in ims_pcu_ofn_bit_store()
1431 		return error;  in ims_pcu_ofn_bit_store()
1438 	error = ims_pcu_read_ofn_config(pcu, attr->addr, &data);  in ims_pcu_ofn_bit_store()
1439 	if (!error) {  in ims_pcu_ofn_bit_store()
1445 		error = ims_pcu_write_ofn_config(pcu, attr->addr, data);  in ims_pcu_ofn_bit_store()
1450 	return error ?: count;  in ims_pcu_ofn_bit_store()
1527 	int error;  in ims_pcu_buffers_alloc()  local
1540 		error = -ENOMEM;  in ims_pcu_buffers_alloc()
1560 		error = -ENOMEM;  in ims_pcu_buffers_alloc()
1569 		error = -ENOMEM;  in ims_pcu_buffers_alloc()
1576 		error = -ENOMEM;  in ims_pcu_buffers_alloc()
1601 	return error;  in ims_pcu_buffers_alloc()
1721 	int error;  in ims_pcu_start_io()  local
1723 	error = usb_submit_urb(pcu->urb_ctrl, GFP_KERNEL);  in ims_pcu_start_io()
1724 	if (error) {  in ims_pcu_start_io()
1727 			error);  in ims_pcu_start_io()
1731 	error = usb_submit_urb(pcu->urb_in, GFP_KERNEL);  in ims_pcu_start_io()
1732 	if (error) {  in ims_pcu_start_io()
1735 			error);  in ims_pcu_start_io()
1753 	int error;  in ims_pcu_line_setup()  local
1759 	error = usb_control_msg(pcu->udev, usb_sndctrlpipe(pcu->udev, 0),  in ims_pcu_line_setup()
1765 	if (error < 0) {  in ims_pcu_line_setup()
1767 			error);  in ims_pcu_line_setup()
1768 		return error;  in ims_pcu_line_setup()
1771 	error = usb_control_msg(pcu->udev, usb_sndctrlpipe(pcu->udev, 0),  in ims_pcu_line_setup()
1776 	if (error < 0) {  in ims_pcu_line_setup()
1778 			error);  in ims_pcu_line_setup()
1779 		return error;  in ims_pcu_line_setup()
1787 	int error;  in ims_pcu_get_device_info()  local
1789 	error = ims_pcu_get_info(pcu);  in ims_pcu_get_device_info()
1790 	if (error)  in ims_pcu_get_device_info()
1791 		return error;  in ims_pcu_get_device_info()
1793 	error = ims_pcu_execute_query(pcu, GET_FW_VERSION);  in ims_pcu_get_device_info()
1794 	if (error) {  in ims_pcu_get_device_info()
1796 			"GET_FW_VERSION command failed, error: %d\n", error);  in ims_pcu_get_device_info()
1797 		return error;  in ims_pcu_get_device_info()
1805 	error = ims_pcu_execute_query(pcu, GET_BL_VERSION);  in ims_pcu_get_device_info()
1806 	if (error) {  in ims_pcu_get_device_info()
1808 			"GET_BL_VERSION command failed, error: %d\n", error);  in ims_pcu_get_device_info()
1809 		return error;  in ims_pcu_get_device_info()
1817 	error = ims_pcu_execute_query(pcu, RESET_REASON);  in ims_pcu_get_device_info()
1818 	if (error) {  in ims_pcu_get_device_info()
1820 			"RESET_REASON command failed, error: %d\n", error);  in ims_pcu_get_device_info()
1821 		return error;  in ims_pcu_get_device_info()
1841 	int error;  in ims_pcu_identify_type()  local
1843 	error = ims_pcu_execute_query(pcu, GET_DEVICE_ID);  in ims_pcu_identify_type()
1844 	if (error) {  in ims_pcu_identify_type()
1846 			"GET_DEVICE_ID command failed, error: %d\n", error);  in ims_pcu_identify_type()
1847 		return error;  in ims_pcu_identify_type()
1861 	int error;  in ims_pcu_init_application_mode()  local
1863 	error = ims_pcu_get_device_info(pcu);  in ims_pcu_init_application_mode()
1864 	if (error) {  in ims_pcu_init_application_mode()
1866 		return error;  in ims_pcu_init_application_mode()
1869 	error = ims_pcu_identify_type(pcu, &pcu->device_id);  in ims_pcu_init_application_mode()
1870 	if (error) {  in ims_pcu_init_application_mode()
1872 			"Failed to identify device, error: %d\n", error);  in ims_pcu_init_application_mode()
1895 		error = sysfs_create_group(&pcu->dev->kobj,  in ims_pcu_init_application_mode()
1897 		if (error)  in ims_pcu_init_application_mode()
1898 			return error;  in ims_pcu_init_application_mode()
1901 	error = ims_pcu_setup_backlight(pcu);  in ims_pcu_init_application_mode()
1902 	if (error)  in ims_pcu_init_application_mode()
1903 		return error;  in ims_pcu_init_application_mode()
1906 	error = ims_pcu_setup_buttons(pcu, info->keymap, info->keymap_len);  in ims_pcu_init_application_mode()
1907 	if (error)  in ims_pcu_init_application_mode()
1911 		error = ims_pcu_setup_gamepad(pcu);  in ims_pcu_init_application_mode()
1912 		if (error)  in ims_pcu_init_application_mode()
1924 	return error;  in ims_pcu_init_application_mode()
1946 	int error;  in ims_pcu_init_bootloader_mode()  local
1948 	error = ims_pcu_execute_bl_command(pcu, QUERY_DEVICE, NULL, 0,  in ims_pcu_init_bootloader_mode()
1950 	if (error) {  in ims_pcu_init_bootloader_mode()
1952 		return error;  in ims_pcu_init_bootloader_mode()
1964 	error = request_firmware_nowait(THIS_MODULE, true,  in ims_pcu_init_bootloader_mode()
1968 	if (error) {  in ims_pcu_init_bootloader_mode()
1992 	int error;  in ims_pcu_probe()  local
2005 	error = ims_pcu_parse_cdc_data(intf, pcu);  in ims_pcu_probe()
2006 	if (error)  in ims_pcu_probe()
2009 	error = usb_driver_claim_interface(&ims_pcu_driver,  in ims_pcu_probe()
2011 	if (error) {  in ims_pcu_probe()
2014 			error);  in ims_pcu_probe()
2021 	error = ims_pcu_buffers_alloc(pcu);  in ims_pcu_probe()
2022 	if (error)  in ims_pcu_probe()
2025 	error = ims_pcu_start_io(pcu);  in ims_pcu_probe()
2026 	if (error)  in ims_pcu_probe()
2029 	error = ims_pcu_line_setup(pcu);  in ims_pcu_probe()
2030 	if (error)  in ims_pcu_probe()
2033 	error = sysfs_create_group(&intf->dev.kobj, &ims_pcu_attr_group);  in ims_pcu_probe()
2034 	if (error)  in ims_pcu_probe()
2037 	error = pcu->bootloader_mode ?  in ims_pcu_probe()
2040 	if (error)  in ims_pcu_probe()
2055 	return error;  in ims_pcu_probe()