Merge tag 'drm-misc-next-2021-03-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.13:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - %p4cc printk format modifier
  - atomic: introduce drm_crtc_commit_wait, rework atomic plane state
    helpers to take the drm_commit_state structure
  - dma-buf: heaps rework to return a struct dma_buf
  - simple-kms: Add plate state helpers
  - ttm: debugfs support, removal of sysfs

Driver Changes:
  - Convert drivers to shadow plane helpers
  - arc: Move to drm/tiny
  - ast: cursor plane reworks
  - gma500: Remove TTM and medfield support
  - mxsfb: imx8mm support
  - panfrost: MMU IRQ handling rework
  - qxl: rework to better handle resources deallocation, locking
  - sun4i: Add alpha properties for UI and VI layers
  - vc4: RPi4 CEC support
  - vmwgfx: doc cleanup

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210303100600.dgnkadonzuvfnu22@gilmour

1 files changed, 22 insertions, 13 deletions

diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 309afe61afdd..42a0c6888c33 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1154,6 +1154,7 @@ static void build_clear_payload_id_table(struct drm_dp_sideband_msg_tx *msg)
 
 	req.req_type = DP_CLEAR_PAYLOAD_ID_TABLE;
 	drm_dp_encode_sideband_req(&req, msg);
+	msg->path_msg = true;
 }
 
 static int build_enum_path_resources(struct drm_dp_sideband_msg_tx *msg,
@@ -2303,11 +2304,9 @@ drm_dp_mst_port_add_connector(struct drm_dp_mst_branch *mstb,
 
 	if (port->pdt != DP_PEER_DEVICE_NONE &&
 	    drm_dp_mst_is_end_device(port->pdt, port->mcs) &&
-	    port->port_num >= DP_MST_LOGICAL_PORT_0) {
+	    port->port_num >= DP_MST_LOGICAL_PORT_0)
 		port->cached_edid = drm_get_edid(port->connector,
 						 &port->aux.ddc);
-		drm_connector_set_tile_property(port->connector);
-	}
 
 	drm_connector_register(port->connector);
 	return;
@@ -2824,15 +2823,21 @@ static int set_hdr_from_dst_qlock(struct drm_dp_sideband_msg_hdr *hdr,
 
 	req_type = txmsg->msg[0] & 0x7f;
 	if (req_type == DP_CONNECTION_STATUS_NOTIFY ||
-		req_type == DP_RESOURCE_STATUS_NOTIFY)
+		req_type == DP_RESOURCE_STATUS_NOTIFY ||
+		req_type == DP_CLEAR_PAYLOAD_ID_TABLE)
 		hdr->broadcast = 1;
 	else
 		hdr->broadcast = 0;
 	hdr->path_msg = txmsg->path_msg;
-	hdr->lct = mstb->lct;
-	hdr->lcr = mstb->lct - 1;
-	if (mstb->lct > 1)
-		memcpy(hdr->rad, mstb->rad, mstb->lct / 2);
+	if (hdr->broadcast) {
+		hdr->lct = 1;
+		hdr->lcr = 6;
+	} else {
+		hdr->lct = mstb->lct;
+		hdr->lcr = mstb->lct - 1;
+	}
+
+	memcpy(hdr->rad, mstb->rad, hdr->lct / 2);
 
 	return 0;
 }
@@ -4234,9 +4239,8 @@ drm_dp_mst_detect_port(struct drm_connector *connector,
 	case DP_PEER_DEVICE_SST_SINK:
 		ret = connector_status_connected;
 		/* for logical ports - cache the EDID */
-		if (port->port_num >= 8 && !port->cached_edid) {
+		if (port->port_num >= DP_MST_LOGICAL_PORT_0 && !port->cached_edid)
 			port->cached_edid = drm_get_edid(connector, &port->aux.ddc);
-		}
 		break;
 	case DP_PEER_DEVICE_DP_LEGACY_CONV:
 		if (port->ldps)
@@ -5121,11 +5125,16 @@ drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port,
 		if (!found)
 			return 0;
 
-		/* This should never happen, as it means we tried to
-		 * set a mode before querying the full_pbn
+		/*
+		 * This could happen if the sink deasserted its HPD line, but
+		 * the branch device still reports it as attached (PDT != NONE).
 		 */
-		if (WARN_ON(!port->full_pbn))
+		if (!port->full_pbn) {
+			drm_dbg_atomic(port->mgr->dev,
+				       "[MSTB:%p] [MST PORT:%p] no BW available for the port\n",
+				       port->parent, port);
 			return -EINVAL;
+		}
 
 		pbn_used = vcpi->pbn;
 	} else {