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[1/3] drm/i915: Fix scanline_offset for LNL+ and BMG+

Message ID 20250207215406.19348-2-ville.syrjala@linux.intel.com (mailing list archive)
State New
Headers show
Series drm/i915: Fix scanline_offset for LNL+/BMG+ | expand

Commit Message

Ville Syrjälä Feb. 7, 2025, 9:54 p.m. UTC 
From: Ville Syrjälä <ville.syrjala@linux.intel.com>

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>
---
 drivers/gpu/drm/i915/display/intel_vblank.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_vblank.c b/drivers/gpu/drm/i915/display/intel_vblank.c
index 4efd4f7d497a..7b240ce681a0 100644
--- a/drivers/gpu/drm/i915/display/intel_vblank.c
+++ b/drivers/gpu/drm/i915/display/intel_vblank.c
@@ -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;