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drm/i915/dp: Account for AS_SDP guardband only when enabled

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Currently the intel_dp_sdp_min_guardband() accounts for AS_SDP for all
platforms that support adaptive sync SDP even for configurations where
it cannot be enabled. Instead account for adaptive sync SDP guardband
only when it is enabled.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260527041050.601735-13-ankit.k.nautiyal@intel.com
This commit is contained in:
Ankit Nautiyal
2026-05-27 09:40:50 +05:30
parent 6a17120528
commit 7185566c3d
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/i915/display/intel_dp.c
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@@ -7591,7 +7591,6 @@ int intel_dp_get_lines_for_sdp(const struct intel_crtc_state *crtc_state, u32 ty
int intel_dp_sdp_min_guardband(const struct intel_crtc_state *crtc_state,
bool assume_all_enabled)
{
struct intel_display *display = to_intel_display(crtc_state);
int sdp_guardband = 0;
if (assume_all_enabled ||
@@ -7606,8 +7605,8 @@ int intel_dp_sdp_min_guardband(const struct intel_crtc_state *crtc_state,
sdp_guardband = max(sdp_guardband,
intel_dp_get_lines_for_sdp(crtc_state, DP_SDP_PPS));
if ((assume_all_enabled && HAS_AS_SDP(display)) ||
crtc_state->infoframes.enable & intel_hdmi_infoframe_enable(DP_SDP_ADAPTIVE_SYNC))
if (crtc_state->infoframes.enable &
intel_hdmi_infoframe_enable(DP_SDP_ADAPTIVE_SYNC))
sdp_guardband = max(sdp_guardband,
intel_dp_get_lines_for_sdp(crtc_state, DP_SDP_ADAPTIVE_SYNC));