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drm/amd/display: use MST downstream AUX to dump DPRX CRCs

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[why]
     In MST setup, we'd use MST downstream AUX to
     dump the DPRX CRCs from sink device.

[how]
     Assign the mst_port->aux to read DPCD registers.

Signed-off-by: David (Dingchen) Zhang <dingchen.zhang@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
David (Dingchen) Zhang 2019-12-04 10:17:03 -05:00 committed by Alex Deucher
parent 6bdb2e3821
commit 815f72be4d
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
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@ -307,7 +307,7 @@ int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name)
goto cleanup;
}
aux = &aconn->dm_dp_aux.aux;
aux = (aconn->port) ? &aconn->port->aux : &aconn->dm_dp_aux.aux;
if (!aux) {
DRM_DEBUG_DRIVER("No dp aux for amd connector\n");