(enum transcoder) to_intel_crtc(crtc)->pipe;
pipe_config->shared_dpll = DPLL_ID_PRIVATE;
+ /*
+ * Sanitize sync polarity flags based on requested ones. If neither
+ * positive or negative polarity is requested, treat this as meaning
+ * negative polarity.
+ */
+ if (!(pipe_config->adjusted_mode.flags &
+ (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
+ pipe_config->adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
+
+ if (!(pipe_config->adjusted_mode.flags &
+ (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
+ pipe_config->adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
+
/* Compute a starting value for pipe_config->pipe_bpp taking the source
* plane pixel format and any sink constraints into account. Returns the
* source plane bpp so that dithering can be selected on mismatches