WebSVN – Kolibri OS – Diff – /drivers/include/drm/drm_dp_mst_helper.h

 };
 /**
  * struct drm_dp_mst_port - MST port
- * @kref: reference count for this port.
- * @guid_valid: for DP 1.2 devices if we have validated the GUID.
- * @guid: guid for DP 1.2 device on this port.
+ * @kref: reference count for this port.
  * @port_num: port number
  * @input: if this port is an input port.
  * @mcs: message capability status - DP 1.2 spec.
  * @ddps: DisplayPort Device Plug Status - DP 1.2
  * in the MST topology.
  */
 struct drm_dp_mst_port {
 	struct kref kref;
-	/* if dpcd 1.2 device is on this port - its GUID info */
-	bool guid_valid;
-	u8 guid[16];
 	u8 port_num;
 	bool input;
 	bool mcs;
 	bool ddps;
  * @port_parent: pointer to the port parent, NULL if toplevel.
  * @mgr: topology manager for this branch device.
  * @tx_slots: transmission slots for this device.
  * @last_seqno: last sequence number used to talk to this.
  * @link_address_sent: if a link address message has been sent to this device yet.
+ * @guid: guid for DP 1.2 branch device. port under this branch can be
+ * identified by port #.
+ *
  * This structure represents an MST branch device, there is one
- * primary branch device at the root, along with any others connected
+ * primary branch device at the root, along with any other branches connected
- * to downstream ports
+ * to downstream port of parent branches.
  */
 struct drm_dp_mst_branch {
 	struct kref kref;
 	u8 rad[8];
 	u8 lct;
 	/* slots are protected by mstb->mgr->qlock */
 	struct drm_dp_sideband_msg_tx *tx_slots[2];
 	int last_seqno;
+	bool link_address_sent;
+	/* global unique identifier to identify branch devices */
-	bool link_address_sent;
+	u8 guid[16];
 };
  * @aux: aux channel for the DP connector.
  * @max_payloads: maximum number of payloads the GPU can generate.
  * @conn_base_id: DRM connector ID this mgr is connected to.
  * @down_rep_recv: msg receiver state for down replies.
  * @up_req_recv: msg receiver state for up requests.
- * @lock: protects mst state, primary, guid, dpcd.
+ * @lock: protects mst state, primary, dpcd.
  * @mst_state: if this manager is enabled for an MST capable port.
  * @mst_primary: pointer to the primary branch device.
- * @guid_valid: GUID valid for the primary branch device.
- * @guid: GUID for primary port.
  * @dpcd: cache of DPCD for primary port.
  * @pbn_div: PBN to slots divisor.
+ *
  * This struct represents the toplevel displayport MST topology manager.
  * There should be one instance of this for every MST capable DP connector
 	/* only ever accessed from the workqueue - which should be serialised */
 	struct drm_dp_sideband_msg_rx down_rep_recv;
 	struct drm_dp_sideband_msg_rx up_req_recv;
 	/* pointer to info about the initial MST device */
-	struct mutex lock; /* protects mst_state + primary + guid + dpcd */
+	struct mutex lock; /* protects mst_state + primary + dpcd */
-	bool mst_state;
-	struct drm_dp_mst_branch *mst_primary;
-	/* primary MST device GUID */
+	bool mst_state;
-	bool guid_valid;
+	struct drm_dp_mst_branch *mst_primary;
 	u8 guid[16];
 	u8 dpcd[DP_RECEIVER_CAP_SIZE];
 	u8 sink_count;
 	int pbn_div;
 	/* messages to be transmitted */
 	/* qlock protects the upq/downq and in_progress,
 	   the mstb tx_slots and txmsg->state once they are queued */
 	struct mutex qlock;
 	struct list_head tx_msg_downq;
-	struct list_head tx_msg_upq;
 	bool tx_down_in_progress;
-	bool tx_up_in_progress;
 	/* payload info + lock for it */
 	struct mutex payload_lock;
 	struct drm_dp_vcpi **proposed_vcpis;

Subversion Repositories Kolibri OS

(root)/drivers/include/drm/drm_dp_mst_helper.h – Rev 6082 → 6336