[Intel-gfx] [PATCH] drm/i915: add a note about fec_enable with 128b/132b

[Jani Nikula]

Add a note that fec_enable actually means FEC is to be enabled
explicitly. 128b/132b always has FEC enabled, the driver doesn't need to
enable it separately, and fec_enable will be false.

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_types.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 3c54fe2bfddd..f781a9755a52 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1364,7 +1364,12 @@ struct intel_crtc_state {
 
 	bool enhanced_framing;
 
-	/* Forward Error correction State */
+	/*
+	 * Forward Error Correction.
+	 *
+	 * Note: This will be false for 128b/132b, which will always have FEC
+	 * enabled automatically.
+	 */
 	bool fec_enable;
 
 	bool sdp_split_enable;
-- 
2.39.2