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

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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: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://lore.kernel.org/r/20250409054909.968531-1-jouni.hogander@intel.com
This commit is contained in:
Jouni Högander 2025-04-09 08:49:09 +03:00
parent 6a5cfab072
commit 7a429a14f8
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/i915/display/intel_vrr.c
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@ -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