SDVO_I2C_ARG_0
buf[2*i + 0] = SDVO_I2C_ARG_0 - i;
# define SDVO_DTD_CLOCK_LOW SDVO_I2C_ARG_0
# define SDVO_DTD_HSYNC_OFF SDVO_I2C_ARG_0
# define SDVO_PREFERRED_INPUT_TIMING_CLOCK_LOW SDVO_I2C_ARG_0