GPI_CH_CMD_START
ret = gpi_send_cmd(gpii, gchan, GPI_CH_CMD_START);
TO_GPI_CMD_STR(GPI_CH_CMD_START), ret);
ret = gpi_send_cmd(gpii, &gpii->gchan[i], GPI_CH_CMD_START);
[GPI_CH_CMD_START] = "CH START",
GPI_CH_CMD_START,