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drm/i915: Fix scanline_offset for LNL+ and BMG+

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Turns out LNL+ and BMG+ no longer have the weird extra scanline
offset for HDMI outputs. Fix intel_crtc_scanline_offset()
accordingly so that scanline evasion/etc. works correctly on
HDMI outputs on these new platforms.

Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250207215406.19348-2-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
(cherry picked from commit fede97b72b)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä
2025-04-07 11:00:06 +03:00
committed by Jani Nikula
parent 0af2f6be1b
commit ed583d008e
1 changed files with 3 additions and 1 deletions
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drivers/gpu/drm/i915/display/intel_vblank.c
+3 -1
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@@ -222,7 +222,9 @@ int intel_crtc_scanline_offset(const struct intel_crtc_state *crtc_state)
* However if queried just before the start of vblank we'll get an
* answer that's slightly in the future.
*/
if (DISPLAY_VER(display) == 2)
if (DISPLAY_VER(display) >= 20 || display->platform.battlemage)
return 1;
else if (DISPLAY_VER(display) == 2)
return -1;
else if (HAS_DDI(display) && intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
return 2;