6.6-stable review patch. If anyone has any objections, please let me know.
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From: Ville Syrjälä ville.syrjala@linux.intel.com
[ Upstream commit 126f94e87e7960ef7ae58180e39c19cc9dcbbf7f ]
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: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20230502143906.2401-5-ville.sy... Reviewed-by: Luca Coelho luciano.coelho@intel.com Stable-dep-of: 99f855082f22 ("drm/i915/mst: Reject FEC+MST on ICL") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/i915/display/intel_dp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 18ee4f2a87f9e..fff008955cb2c 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1310,13 +1310,13 @@ 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;