drm_scdc_writeb
drm_scdc_writeb(hdmi->ddc, SCDC_SOURCE_VERSION,
ret = drm_scdc_writeb(connector->ddc, SCDC_TMDS_CONFIG, config);
ret = drm_scdc_writeb(connector->ddc, SCDC_TMDS_CONFIG, config);
ret = drm_scdc_writeb(nv_encoder->i2c, SCDC_TMDS_CONFIG, scdc);