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drm/amd/display: WA for 3 display play video hot plug.

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Three monitor connected and playing a video will
	occupy all 4 pipes, if hot plug forth display,
	commit streams will be failed due to no free pipe
	can be found.
	Work around:
	When forth monitor connected, mark video plane as
	a fake plane, remove it in dc, keep it in dm and
	report address to OS, until OS turn off MPO.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yongqiang Sun
2017-10-10 14:01:33 -04:00
committed by Alex Deucher
parent 4e527c01aa
commit 62c933f9c6
5 changed files with 26 additions and 23 deletions
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10
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -2794,7 +2794,7 @@ int amdgpu_dm_connector_mode_valid(struct drm_connector *connector,
stream->src.height = mode->vdisplay;
stream->dst = stream->src;
if (dc_validate_stream(adev->dm.dc, stream))
if (dc_validate_stream(adev->dm.dc, stream) == DC_OK)
result = MODE_OK;
dc_stream_release(stream);
@@ -2839,7 +2839,7 @@ static int dm_crtc_helper_atomic_check(struct drm_crtc *crtc,
if (!dm_crtc_state->stream)
return 0;
if (dc_validate_stream(dc, dm_crtc_state->stream))
if (dc_validate_stream(dc, dm_crtc_state->stream) == DC_OK)
return 0;
return ret;
@@ -3034,7 +3034,7 @@ static int dm_plane_atomic_check(struct drm_plane *plane,
if (!dm_plane_state->dc_state)
return 0;
if (dc_validate_plane(dc, dm_plane_state->dc_state))
if (dc_validate_plane(dc, dm_plane_state->dc_state) == DC_OK)
return 0;
return -EINVAL;
@@ -4464,10 +4464,10 @@ static int dm_update_crtcs_state(struct dc *dc,
crtc->base.id);
/* i.e. reset mode */
if (!dc_remove_stream_from_ctx(
if (dc_remove_stream_from_ctx(
dc,
dm_state->context,
dm_old_crtc_state->stream)) {
dm_old_crtc_state->stream) != DC_OK) {
ret = -EINVAL;
goto fail;
}