if (mode->clock > max_clock)
return MODE_CLOCK_HIGH;
+ /* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */
+ if (HAS_PCH_LPT(dev) &&
+ (ironlake_get_lanes_required(mode->clock, 270000, 24) > 2))
+ return MODE_CLOCK_HIGH;
+
return MODE_OK;
}
crt->force_hotplug_required = 0;
dev_priv->hotplug_supported_mask |= CRT_HOTPLUG_INT_STATUS;
+
+ /*
+ * TODO: find a proper way to discover whether we need to set the
+ * polarity reversal bit or not, instead of relying on the BIOS.
+ */
+ if (HAS_PCH_LPT(dev))
+ dev_priv->fdi_rx_polarity_reversed =
+ !!(I915_READ(_FDI_RXA_CTL) & FDI_RX_POLARITY_REVERSED_LPT);
}