From 556205c282dff680ff528c81210c0f18fc994ed2 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Tue, 31 Aug 2021 17:17:35 +0300
Subject: drm/i915/edp: use MSO pixel overlap from DisplayID data
Git-commit: 185667c2986bf431d7a37968d51f94b09e48ca0e
Patch-mainline: v5.16-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Now that we have MSO pixel overlap in display info, use it.
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87d8d80ba205eb2ecb50f613219e0a821a842616.1630419362.git.jani.nikula@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_dp.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index f6118fbd67c9..b9036b80493f 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2455,6 +2455,8 @@ static void intel_edp_mso_mode_fixup(struct intel_connector *connector,
static void intel_edp_mso_init(struct intel_dp *intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ struct intel_connector *connector = intel_dp->attached_connector;
+ struct drm_display_info *info = &connector->base.display_info;
u8 mso;
if (intel_dp->edp_dpcd[0] < DP_EDP_14)
@@ -2473,8 +2475,9 @@ static void intel_edp_mso_init(struct intel_dp *intel_dp)
}
if (mso) {
- drm_dbg_kms(&i915->drm, "Sink MSO %ux%u configuration\n",
- mso, drm_dp_max_lane_count(intel_dp->dpcd) / mso);
+ drm_dbg_kms(&i915->drm, "Sink MSO %ux%u configuration, pixel overlap %u\n",
+ mso, drm_dp_max_lane_count(intel_dp->dpcd) / mso,
+ info->mso_pixel_overlap);
if (!HAS_MSO(i915)) {
drm_err(&i915->drm, "No source MSO support, disabling\n");
mso = 0;
@@ -2482,7 +2485,7 @@ static void intel_edp_mso_init(struct intel_dp *intel_dp)
}
intel_dp->mso_link_count = mso;
- intel_dp->mso_pixel_overlap = 0; /* FIXME: read from DisplayID v2.0 */
+ intel_dp->mso_pixel_overlap = mso ? info->mso_pixel_overlap : 0;
}
static bool
--
2.38.1