Commit 7a429a14 authored by Jouni Högander's avatar Jouni Högander
Browse files

drm/i915/vrr: Stop writing VRR_CTL_IGN_MAX_SHIFT for MTL onwards 



According to Bspec VRR_CTL_IGN_MAX_SHIFT doesn't exist for MTL and
onwards. On LunarLake and onwards Bit 30 is "Mask Block PkgC" instead. Stop
writing the bit for MeteorLake and onwards

v2: "Ignore Max Shift" bit doesn't exist on MeteorLake either

Bspec: 50508, 68925
Signed-off-by: default avatarJouni Högander <jouni.hogander@intel.com>
Reviewed-by: default avatarAnkit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://lore.kernel.org/r/20250409054909.968531-1-jouni.hogander@intel.com
parent 6a5cfab0

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

+4 −1
Original line number Diff line number Diff line
@@ -444,7 +444,10 @@ static u32 trans_vrr_ctl(const struct intel_crtc_state *crtc_state) 
{

	struct intel_display *display = to_intel_display(crtc_state);



	if (DISPLAY_VER(display) >= 13)

	if (DISPLAY_VER(display) >= 14)

		return VRR_CTL_FLIP_LINE_EN |

			XELPD_VRR_CTL_VRR_GUARDBAND(crtc_state->vrr.guardband);

	else if (DISPLAY_VER(display) >= 13)

		return VRR_CTL_IGN_MAX_SHIFT | VRR_CTL_FLIP_LINE_EN |

			XELPD_VRR_CTL_VRR_GUARDBAND(crtc_state->vrr.guardband);

	else