iqs5xx_bl_cmd
error = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_VER, 0);
ret = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_READ, bl_addr + i);
error = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_VER, 0);
error = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_CRC, 0);