Commit 126f94e8 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915: Fix FEC pipe A vs. DDI A mixup 



On pre-TGL FEC is a port level feature, not a transcoder
level feature, and it's DDI A which doesn't have it, not
trancoder A. Check for the correct thing when determining
whether FEC is supported or not.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230502143906.2401-5-ville.syrjala@linux.intel.com


Reviewed-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent cbbfe915

drivers/gpu/drm/i915/display/intel_dp.c

+2 −2
Original line number Diff line number Diff line
@@ -1357,13 +1357,13 @@ bool intel_dp_has_hdmi_sink(struct intel_dp *intel_dp) 
static bool intel_dp_source_supports_fec(struct intel_dp *intel_dp,

					 const struct intel_crtc_state *pipe_config)

{

	struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;

	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);



	/* On TGL, FEC is supported on all Pipes */

	if (DISPLAY_VER(dev_priv) >= 12)

		return true;



	if (DISPLAY_VER(dev_priv) == 11 && pipe_config->cpu_transcoder != TRANSCODER_A)

	if (DISPLAY_VER(dev_priv) == 11 && encoder->port != PORT_A)

		return true;



	return false;