t4_read_write_register
ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4,
ret = t4_read_write_register(hdev, T4_PRM_ID_CONFIG_3, &tmp, 0, true);
ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, &tmp, 0, true);
ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, NULL, tmp, false);
ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL,