206 	int error;  in ims_pcu_setup_buttons()  local
237 	error = input_register_device(input);  in ims_pcu_setup_buttons()
238 	if (error) {  in ims_pcu_setup_buttons()
241 			error);  in ims_pcu_setup_buttons()
243 		return error;  in ims_pcu_setup_buttons()
288 	int error;  in ims_pcu_setup_gamepad()  local
295 		error = -ENOMEM;  in ims_pcu_setup_gamepad()
324 	error = input_register_device(input);  in ims_pcu_setup_gamepad()
325 	if (error) {  in ims_pcu_setup_gamepad()
328 			error);  in ims_pcu_setup_gamepad()
338 	return error;  in ims_pcu_setup_gamepad()
512 	int error;  in ims_pcu_send_cmd_chunk()  local
514 	error = usb_bulk_msg(pcu->udev,  in ims_pcu_send_cmd_chunk()
519 	if (error < 0) {  in ims_pcu_send_cmd_chunk()
522 			command, chunk, error);  in ims_pcu_send_cmd_chunk()
523 		return error;  in ims_pcu_send_cmd_chunk()
536 	int error;  in ims_pcu_send_command()  local
560 			error = ims_pcu_send_cmd_chunk(pcu, command,  in ims_pcu_send_command()
562 			if (error)  in ims_pcu_send_command()
563 				return error;  in ims_pcu_send_command()
579 		error = ims_pcu_send_cmd_chunk(pcu, command, ++chunk, count);  in ims_pcu_send_command()
580 		if (error)  in ims_pcu_send_command()
581 			return error;  in ims_pcu_send_command()
599 	int error;  in __ims_pcu_execute_command()  local
604 	error = ims_pcu_send_command(pcu, command, data, len);  in __ims_pcu_execute_command()
605 	if (error)  in __ims_pcu_execute_command()
606 		return error;  in __ims_pcu_execute_command()
653 	int error;  in __ims_pcu_execute_bl_command()  local
659 	error = __ims_pcu_execute_command(pcu,  in __ims_pcu_execute_bl_command()
663 	if (error) {  in __ims_pcu_execute_bl_command()
666 			pcu->cmd_buf[0], error);  in __ims_pcu_execute_bl_command()
667 		return error;  in __ims_pcu_execute_bl_command()
693 	int error;  in ims_pcu_get_info()  local
695 	error = ims_pcu_execute_query(pcu, GET_INFO);  in ims_pcu_get_info()
696 	if (error) {  in ims_pcu_get_info()
698 			"GET_INFO command failed, error: %d\n", error);  in ims_pcu_get_info()
699 		return error;  in ims_pcu_get_info()
717 	int error;  in ims_pcu_set_info()  local
726 	error = ims_pcu_execute_command(pcu, SET_INFO,  in ims_pcu_set_info()
729 	if (error) {  in ims_pcu_set_info()
732 			error);  in ims_pcu_set_info()
733 		return error;  in ims_pcu_set_info()
741 	int error;  in ims_pcu_switch_to_bootloader()  local
744 	error = ims_pcu_execute_command(pcu, JUMP_TO_BTLDR, NULL, 0);  in ims_pcu_switch_to_bootloader()
745 	if (error) {  in ims_pcu_switch_to_bootloader()
748 			error);  in ims_pcu_switch_to_bootloader()
749 		return error;  in ims_pcu_switch_to_bootloader()
784 	int error;  in ims_pcu_verify_block()  local
790 	error = ims_pcu_execute_bl_command(pcu, READ_APP, NULL, 5,  in ims_pcu_verify_block()
792 	if (error) {  in ims_pcu_verify_block()
795 			addr, len, error);  in ims_pcu_verify_block()
796 		return error;  in ims_pcu_verify_block()
828 	int error;  in ims_pcu_flash_firmware()  local
830 	error = ims_pcu_execute_bl_command(pcu, ERASE_APP, NULL, 0, 2000);  in ims_pcu_flash_firmware()
831 	if (error) {  in ims_pcu_flash_firmware()
834 			error);  in ims_pcu_flash_firmware()
835 		return error;  in ims_pcu_flash_firmware()
853 		error = ims_pcu_execute_bl_command(pcu, PROGRAM_DEVICE,  in ims_pcu_flash_firmware()
856 		if (error) {  in ims_pcu_flash_firmware()
859 				addr, len, error);  in ims_pcu_flash_firmware()
860 			return error;  in ims_pcu_flash_firmware()
864 			error = ims_pcu_verify_block(pcu, addr, len, rec->data);  in ims_pcu_flash_firmware()
865 			if (error)  in ims_pcu_flash_firmware()
866 				return error;  in ims_pcu_flash_firmware()
875 	error = ims_pcu_execute_bl_command(pcu, PROGRAM_COMPLETE,  in ims_pcu_flash_firmware()
877 	if (error)  in ims_pcu_flash_firmware()
880 			error);  in ims_pcu_flash_firmware()
916 	int error;  in ims_pcu_process_async_firmware()  local
924 	error = ihex_validate_fw(fw);  in ims_pcu_process_async_firmware()
925 	if (error) {  in ims_pcu_process_async_firmware()
955 	int error;  in ims_pcu_backlight_set_brightness()  local
959 	error = ims_pcu_execute_command(pcu, SET_BRIGHTNESS,  in ims_pcu_backlight_set_brightness()
961 	if (error && error != -ENODEV)  in ims_pcu_backlight_set_brightness()
964 			 value, error);  in ims_pcu_backlight_set_brightness()
968 	return error;  in ims_pcu_backlight_set_brightness()
979 	int error;  in ims_pcu_backlight_get_brightness()  local
983 	error = ims_pcu_execute_query(pcu, GET_BRIGHTNESS);  in ims_pcu_backlight_get_brightness()
984 	if (error) {  in ims_pcu_backlight_get_brightness()
987 			 error);  in ims_pcu_backlight_get_brightness()
1003 	int error;  in ims_pcu_setup_backlight()  local
1014 	error = led_classdev_register(pcu->dev, &backlight->cdev);  in ims_pcu_setup_backlight()
1015 	if (error) {  in ims_pcu_setup_backlight()
1018 			error);  in ims_pcu_setup_backlight()
1019 		return error;  in ims_pcu_setup_backlight()
1067 	int error;  in ims_pcu_attribute_store()  local
1076 	error = mutex_lock_interruptible(&pcu->cmd_mutex);  in ims_pcu_attribute_store()
1077 	if (error)  in ims_pcu_attribute_store()
1078 		return error;  in ims_pcu_attribute_store()
1083 	error = ims_pcu_set_info(pcu);  in ims_pcu_attribute_store()
1093 	return error < 0 ? error : count;  in ims_pcu_attribute_store()
1126 	int error;  in ims_pcu_reset_device()  local
1128 	error = kstrtoint(buf, 0, &value);  in ims_pcu_reset_device()
1129 	if (error)  in ims_pcu_reset_device()
1130 		return error;  in ims_pcu_reset_device()
1137 	error = ims_pcu_execute_command(pcu, PCU_RESET, &reset_byte, 1);  in ims_pcu_reset_device()
1138 	if (error) {  in ims_pcu_reset_device()
1141 			 error);  in ims_pcu_reset_device()
1142 		return error;  in ims_pcu_reset_device()
1158 	int error;  in ims_pcu_update_firmware_store()  local
1160 	error = kstrtoint(buf, 0, &value);  in ims_pcu_update_firmware_store()
1161 	if (error)  in ims_pcu_update_firmware_store()
1162 		return error;  in ims_pcu_update_firmware_store()
1167 	error = mutex_lock_interruptible(&pcu->cmd_mutex);  in ims_pcu_update_firmware_store()
1168 	if (error)  in ims_pcu_update_firmware_store()
1169 		return error;  in ims_pcu_update_firmware_store()
1171 	error = request_ihex_firmware(&fw, IMS_PCU_FIRMWARE_NAME, pcu->dev);  in ims_pcu_update_firmware_store()
1172 	if (error) {  in ims_pcu_update_firmware_store()
1174 			IMS_PCU_FIRMWARE_NAME, error);  in ims_pcu_update_firmware_store()
1187 		error = ims_pcu_handle_firmware_update(pcu, fw);  in ims_pcu_update_firmware_store()
1189 		error = ims_pcu_switch_to_bootloader(pcu);  in ims_pcu_update_firmware_store()
1195 	return error ?: count;  in ims_pcu_update_firmware_store()
1261 	int error;  in ims_pcu_read_ofn_config()  local
1264 	error = ims_pcu_execute_command(pcu, OFN_GET_CONFIG,  in ims_pcu_read_ofn_config()
1266 	if (error)  in ims_pcu_read_ofn_config()
1267 		return error;  in ims_pcu_read_ofn_config()
1281 	int error;  in ims_pcu_write_ofn_config()  local
1284 	error = ims_pcu_execute_command(pcu, OFN_SET_CONFIG,  in ims_pcu_write_ofn_config()
1286 	if (error)  in ims_pcu_write_ofn_config()
1287 		return error;  in ims_pcu_write_ofn_config()
1302 	int error;  in ims_pcu_ofn_reg_data_show()  local
1306 	error = ims_pcu_read_ofn_config(pcu, pcu->ofn_reg_addr, &data);  in ims_pcu_ofn_reg_data_show()
1309 	if (error)  in ims_pcu_ofn_reg_data_show()
1310 		return error;  in ims_pcu_ofn_reg_data_show()
1321 	int error;  in ims_pcu_ofn_reg_data_store()  local
1324 	error = kstrtou8(buf, 0, &value);  in ims_pcu_ofn_reg_data_store()
1325 	if (error)  in ims_pcu_ofn_reg_data_store()
1326 		return error;  in ims_pcu_ofn_reg_data_store()
1329 	error = ims_pcu_write_ofn_config(pcu, pcu->ofn_reg_addr, value);  in ims_pcu_ofn_reg_data_store()
1332 	return error ?: count;  in ims_pcu_ofn_reg_data_store()
1344 	int error;  in ims_pcu_ofn_reg_addr_show()  local
1347 	error = scnprintf(buf, PAGE_SIZE, "%x\n", pcu->ofn_reg_addr);  in ims_pcu_ofn_reg_addr_show()
1350 	return error;  in ims_pcu_ofn_reg_addr_show()
1359 	int error;  in ims_pcu_ofn_reg_addr_store()  local
1362 	error = kstrtou8(buf, 0, &value);  in ims_pcu_ofn_reg_addr_store()
1363 	if (error)  in ims_pcu_ofn_reg_addr_store()
1364 		return error;  in ims_pcu_ofn_reg_addr_store()
1390 	int error;  in ims_pcu_ofn_bit_show()  local
1394 	error = ims_pcu_read_ofn_config(pcu, attr->addr, &data);  in ims_pcu_ofn_bit_show()
1397 	if (error)  in ims_pcu_ofn_bit_show()
1398 		return error;  in ims_pcu_ofn_bit_show()
1411 	int error;  in ims_pcu_ofn_bit_store()  local
1415 	error = kstrtoint(buf, 0, &value);  in ims_pcu_ofn_bit_store()
1416 	if (error)  in ims_pcu_ofn_bit_store()
1417 		return error;  in ims_pcu_ofn_bit_store()
1424 	error = ims_pcu_read_ofn_config(pcu, attr->addr, &data);  in ims_pcu_ofn_bit_store()
1425 	if (!error) {  in ims_pcu_ofn_bit_store()
1431 		error = ims_pcu_write_ofn_config(pcu, attr->addr, data);  in ims_pcu_ofn_bit_store()
1436 	return error ?: count;  in ims_pcu_ofn_bit_store()
1513 	int error;  in ims_pcu_buffers_alloc()  local
1526 		error = -ENOMEM;  in ims_pcu_buffers_alloc()
1546 		error = -ENOMEM;  in ims_pcu_buffers_alloc()
1555 		error = -ENOMEM;  in ims_pcu_buffers_alloc()
1562 		error = -ENOMEM;  in ims_pcu_buffers_alloc()
1587 	return error;  in ims_pcu_buffers_alloc()
1723 	int error;  in ims_pcu_start_io()  local
1725 	error = usb_submit_urb(pcu->urb_ctrl, GFP_KERNEL);  in ims_pcu_start_io()
1726 	if (error) {  in ims_pcu_start_io()
1729 			error);  in ims_pcu_start_io()
1733 	error = usb_submit_urb(pcu->urb_in, GFP_KERNEL);  in ims_pcu_start_io()
1734 	if (error) {  in ims_pcu_start_io()
1737 			error);  in ims_pcu_start_io()
1755 	int error;  in ims_pcu_line_setup()  local
1761 	error = usb_control_msg(pcu->udev, usb_sndctrlpipe(pcu->udev, 0),  in ims_pcu_line_setup()
1767 	if (error < 0) {  in ims_pcu_line_setup()
1769 			error);  in ims_pcu_line_setup()
1770 		return error;  in ims_pcu_line_setup()
1773 	error = usb_control_msg(pcu->udev, usb_sndctrlpipe(pcu->udev, 0),  in ims_pcu_line_setup()
1778 	if (error < 0) {  in ims_pcu_line_setup()
1780 			error);  in ims_pcu_line_setup()
1781 		return error;  in ims_pcu_line_setup()
1789 	int error;  in ims_pcu_get_device_info()  local
1791 	error = ims_pcu_get_info(pcu);  in ims_pcu_get_device_info()
1792 	if (error)  in ims_pcu_get_device_info()
1793 		return error;  in ims_pcu_get_device_info()
1795 	error = ims_pcu_execute_query(pcu, GET_FW_VERSION);  in ims_pcu_get_device_info()
1796 	if (error) {  in ims_pcu_get_device_info()
1798 			"GET_FW_VERSION command failed, error: %d\n", error);  in ims_pcu_get_device_info()
1799 		return error;  in ims_pcu_get_device_info()
1807 	error = ims_pcu_execute_query(pcu, GET_BL_VERSION);  in ims_pcu_get_device_info()
1808 	if (error) {  in ims_pcu_get_device_info()
1810 			"GET_BL_VERSION command failed, error: %d\n", error);  in ims_pcu_get_device_info()
1811 		return error;  in ims_pcu_get_device_info()
1819 	error = ims_pcu_execute_query(pcu, RESET_REASON);  in ims_pcu_get_device_info()
1820 	if (error) {  in ims_pcu_get_device_info()
1822 			"RESET_REASON command failed, error: %d\n", error);  in ims_pcu_get_device_info()
1823 		return error;  in ims_pcu_get_device_info()
1843 	int error;  in ims_pcu_identify_type()  local
1845 	error = ims_pcu_execute_query(pcu, GET_DEVICE_ID);  in ims_pcu_identify_type()
1846 	if (error) {  in ims_pcu_identify_type()
1848 			"GET_DEVICE_ID command failed, error: %d\n", error);  in ims_pcu_identify_type()
1849 		return error;  in ims_pcu_identify_type()
1863 	int error;  in ims_pcu_init_application_mode()  local
1865 	error = ims_pcu_get_device_info(pcu);  in ims_pcu_init_application_mode()
1866 	if (error) {  in ims_pcu_init_application_mode()
1868 		return error;  in ims_pcu_init_application_mode()
1871 	error = ims_pcu_identify_type(pcu, &pcu->device_id);  in ims_pcu_init_application_mode()
1872 	if (error) {  in ims_pcu_init_application_mode()
1874 			"Failed to identify device, error: %d\n", error);  in ims_pcu_init_application_mode()
1897 		error = sysfs_create_group(&pcu->dev->kobj,  in ims_pcu_init_application_mode()
1899 		if (error)  in ims_pcu_init_application_mode()
1900 			return error;  in ims_pcu_init_application_mode()
1903 	error = ims_pcu_setup_backlight(pcu);  in ims_pcu_init_application_mode()
1904 	if (error)  in ims_pcu_init_application_mode()
1905 		return error;  in ims_pcu_init_application_mode()
1908 	error = ims_pcu_setup_buttons(pcu, info->keymap, info->keymap_len);  in ims_pcu_init_application_mode()
1909 	if (error)  in ims_pcu_init_application_mode()
1913 		error = ims_pcu_setup_gamepad(pcu);  in ims_pcu_init_application_mode()
1914 		if (error)  in ims_pcu_init_application_mode()
1926 	return error;  in ims_pcu_init_application_mode()
1948 	int error;  in ims_pcu_init_bootloader_mode()  local
1950 	error = ims_pcu_execute_bl_command(pcu, QUERY_DEVICE, NULL, 0,  in ims_pcu_init_bootloader_mode()
1952 	if (error) {  in ims_pcu_init_bootloader_mode()
1954 		return error;  in ims_pcu_init_bootloader_mode()
1966 	error = request_firmware_nowait(THIS_MODULE, true,  in ims_pcu_init_bootloader_mode()
1970 	if (error) {  in ims_pcu_init_bootloader_mode()
1994 	int error;  in ims_pcu_probe()  local
2007 	error = ims_pcu_parse_cdc_data(intf, pcu);  in ims_pcu_probe()
2008 	if (error)  in ims_pcu_probe()
2011 	error = usb_driver_claim_interface(&ims_pcu_driver,  in ims_pcu_probe()
2013 	if (error) {  in ims_pcu_probe()
2016 			error);  in ims_pcu_probe()
2022 	error = ims_pcu_buffers_alloc(pcu);  in ims_pcu_probe()
2023 	if (error)  in ims_pcu_probe()
2026 	error = ims_pcu_start_io(pcu);  in ims_pcu_probe()
2027 	if (error)  in ims_pcu_probe()
2030 	error = ims_pcu_line_setup(pcu);  in ims_pcu_probe()
2031 	if (error)  in ims_pcu_probe()
2034 	error = sysfs_create_group(&intf->dev.kobj, &ims_pcu_attr_group);  in ims_pcu_probe()
2035 	if (error)  in ims_pcu_probe()
2038 	error = pcu->bootloader_mode ?  in ims_pcu_probe()
2041 	if (error)  in ims_pcu_probe()
2056 	return error;  in ims_pcu_probe()