[PATCH 5.15 012/120] drm/amdgpu: update drm_display_info correctly when the edid is read

Greg Kroah-Hartman
2022-12-05T19:36:46Z

From: Claudio Suarez <cssk@net-c.es>

[ Upstream commit 20543be93ca45968f344261c1a997177e51bd7e1 ]

drm_display_info is updated by drm_get_edid() or
drm_connector_update_edid_property(). In the amdgpu driver it is almost
always updated when the edid is read in amdgpu_connector_get_edid(),
but not always. Change amdgpu_connector_get_edid() and
amdgpu_connector_free_edid() to keep drm_display_info updated.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Claudio Suarez <cssk@net-c.es>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Stable-dep-of: 602ad43c3cd8 ("drm/amdgpu: Partially revert "drm/amdgpu: update drm_display_info correctly when the edid is read"")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 5 ++++-
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +--
2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index 4b1d62ebf8dd..34f217544c36 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -315,8 +315,10 @@ static void amdgpu_connector_get_edid(struct drm_connector *connector)
if (!amdgpu_connector->edid) {
/* some laptops provide a hardcoded edid in rom for LCDs */
if (((connector->connector_type == DRM_MODE_CONNECTOR_LVDS) ||
- (connector->connector_type == DRM_MODE_CONNECTOR_eDP)))
+ (connector->connector_type == DRM_MODE_CONNECTOR_eDP))) {
amdgpu_connector->edid = amdgpu_connector_get_hardcoded_edid(adev);
+ drm_connector_update_edid_property(connector, amdgpu_connector->edid);
+ }
}
}

@@ -326,6 +328,7 @@ static void amdgpu_connector_free_edid(struct drm_connector *connector)

kfree(amdgpu_connector->edid);
amdgpu_connector->edid = NULL;
+ drm_connector_update_edid_property(connector, NULL);
}

static int amdgpu_connector_ddc_get_modes(struct drm_connector *connector)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 72e9b9b80c22..0ebabcc8827b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2997,13 +2997,12 @@ void amdgpu_dm_update_connector_after_detect(
aconnector->edid =
(struct edid *)sink->dc_edid.raw_edid;

- drm_connector_update_edid_property(connector,
- aconnector->edid);
if (aconnector->dc_link->aux_mode)
drm_dp_cec_set_edid(&aconnector->dm_dp_aux.aux,
aconnector->edid);
}

+ drm_connector_update_edid_property(connector, aconnector->edid);
amdgpu_dm_update_freesync_caps(connector, aconnector->edid);
update_connector_ext_caps(aconnector);
} else {
--
2.35.1