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drm/rockchip: dw-dp: support fix virtual channel payload id

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For simulation aux client, the virtual channel pyaload id can't
send by sideband MSG. In this case, the MST device often config
a fix payload id. It need DPTX also config fix payload id to
match the MST device.

Change-Id: I49148e92a80091a50a5b1f44496430f39d9c1aee
Signed-off-by: Zhang Yubing <yubing.zhang@rock-chips.com>
This commit is contained in:
Zhang Yubing
2024-05-07 11:32:19 +08:00
committed by Tao Huang
parent 82e9773633
commit 7fc20e2dfe
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/rockchip/dw-dp.c
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@@ -3858,6 +3858,7 @@ static int dw_dp_mst_encoder_atomic_check(struct drm_encoder *encoder,
struct dw_dp_mst_conn *mst_conn = container_of(connector,
struct dw_dp_mst_conn, connector);
struct drm_dp_mst_topology_state *mst_state;
struct drm_dp_mst_atomic_payload *payload;
int pbn, slot;
mst_state = drm_atomic_get_mst_topology_state(crtc_state->state, &dp->mst_mgr);
@@ -3918,6 +3919,14 @@ static int dw_dp_mst_encoder_atomic_check(struct drm_encoder *encoder,
drm_dp_mst_update_slots(mst_state, DP_CAP_ANSI_8B10B);
payload = drm_atomic_get_mst_payload_state(mst_state, mst_conn->port);
if (dp->aux_client && !payload->vcpi) {
payload->vcpi = mst_enc->stream_id + 1;
dev_info(dp->dev, "[MST PORT:%p] assigned VCPI #%d\n",
payload->port, payload->vcpi);
mst_state->payload_mask |= BIT(payload->vcpi - 1);
}
return 0;
}