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From: Dave Airlie <airlied@gmail.com>
To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org
Subject: [PATCH 3/6] drm/mst: cached EDID for logical ports
Date: Mon, 20 Oct 2014 16:37:13 +1000	[thread overview]
Message-ID: <1413787036-19114-4-git-send-email-airlied@gmail.com> (raw)
In-Reply-To: <1413787036-19114-1-git-send-email-airlied@gmail.com>

From: Dave Airlie <airlied@redhat.com>

Logical ports are never going to have EDID changes,
they are used for the internal ports on MST monitors.

We cache the EDIDs from these to save time at MST probe.

Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 drivers/gpu/drm/drm_dp_mst_topology.c | 20 ++++++++++++++++++--
 drivers/gpu/drm/i915/intel_dp_mst.c   |  2 +-
 include/drm/drm_dp_mst_helper.h       |  4 +++-
 3 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 50926db..ce1113c 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -858,6 +858,8 @@ static void drm_dp_destroy_port(struct kref *kref)
 	struct drm_dp_mst_topology_mgr *mgr = port->mgr;
 	if (!port->input) {
 		port->vcpi.num_slots = 0;
+
+		kfree(port->cached_edid);
 		if (port->connector)
 			(*port->mgr->cbs->destroy_connector)(mgr, port->connector);
 		drm_dp_port_teardown_pdt(port, port->pdt);
@@ -1096,6 +1098,10 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb,
 		char proppath[255];
 		build_mst_prop_path(port, mstb, proppath);
 		port->connector = (*mstb->mgr->cbs->add_connector)(mstb->mgr, port, proppath);
+
+		if (port->port_num >= 8) {
+			port->cached_edid = drm_get_edid(port->connector, &port->aux.ddc);
+		}
 	}
 
 	/* put reference to this port */
@@ -2149,7 +2155,8 @@ EXPORT_SYMBOL(drm_dp_mst_hpd_irq);
  * This returns the current connection state for a port. It validates the
  * port pointer still exists so the caller doesn't require a reference
  */
-enum drm_connector_status drm_dp_mst_detect_port(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port)
+enum drm_connector_status drm_dp_mst_detect_port(struct drm_connector *connector,
+						 struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port)
 {
 	enum drm_connector_status status = connector_status_disconnected;
 
@@ -2168,6 +2175,10 @@ enum drm_connector_status drm_dp_mst_detect_port(struct drm_dp_mst_topology_mgr
 
 	case DP_PEER_DEVICE_SST_SINK:
 		status = connector_status_connected;
+		/* for logical ports - cache the EDID */
+		if (port->port_num >= 8 && !port->cached_edid) {
+			port->cached_edid = drm_get_edid(connector, &port->aux.ddc);
+		}
 		break;
 	case DP_PEER_DEVICE_DP_LEGACY_CONV:
 		if (port->ldps)
@@ -2199,7 +2210,12 @@ struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_
 	if (!port)
 		return NULL;
 
-	edid = drm_get_edid(connector, &port->aux.ddc);
+	if (port->cached_edid)
+		edid = drm_edid_duplicate(port->cached_edid);
+	else
+		edid = drm_get_edid(connector, &port->aux.ddc);
+
+	drm_mode_connector_set_tile_property(connector);
 	drm_dp_put_port(port);
 	return edid;
 }
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index d9a7a78..c66e73a 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -283,7 +283,7 @@ intel_mst_port_dp_detect(struct drm_connector *connector)
 	struct intel_connector *intel_connector = to_intel_connector(connector);
 	struct intel_dp *intel_dp = intel_connector->mst_port;
 
-	return drm_dp_mst_detect_port(&intel_dp->mst_mgr, intel_connector->port);
+	return drm_dp_mst_detect_port(connector, &intel_dp->mst_mgr, intel_connector->port);
 }
 
 static enum drm_connector_status
diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
index 338fc10..ee6fbad 100644
--- a/include/drm/drm_dp_mst_helper.h
+++ b/include/drm/drm_dp_mst_helper.h
@@ -92,6 +92,8 @@ struct drm_dp_mst_port {
 	struct drm_dp_vcpi vcpi;
 	struct drm_connector *connector;
 	struct drm_dp_mst_topology_mgr *mgr;
+
+	struct edid *cached_edid; /* for DP logical ports - make tiling work */
 };
 
 /**
@@ -474,7 +476,7 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms
 int drm_dp_mst_hpd_irq(struct drm_dp_mst_topology_mgr *mgr, u8 *esi, bool *handled);
 
 
-enum drm_connector_status drm_dp_mst_detect_port(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
+enum drm_connector_status drm_dp_mst_detect_port(struct drm_connector *connector, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
 
 struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
 
-- 
2.1.0

  parent reply	other threads:[~2014-10-20  6:37 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-20  6:37 drm tiled monitor support (not hiding in kernel) Dave Airlie
2014-10-20  6:37 ` [PATCH 1/6] drm/displayid: add displayid defines and edid extension Dave Airlie
2014-10-20 16:16   ` Jani Nikula
2014-10-20  6:37 ` [PATCH 2/6] drm: add tile_group support Dave Airlie
2014-10-20  9:11   ` David Herrmann
2014-10-20 15:32   ` Daniel Vetter
2014-10-22  2:23     ` Dave Airlie
2014-10-22  8:42       ` Daniel Vetter
2014-10-20  6:37 ` Dave Airlie [this message]
2014-10-20  6:37 ` [PATCH 4/6] drm/connector: store tile information from displayid Dave Airlie
2014-10-20  6:37 ` [PATCH 5/6] drm/tile: expose the tile property to userspace Dave Airlie
2014-10-20  9:15   ` David Herrmann
2014-10-20 15:31   ` Daniel Vetter
2014-10-20 15:34     ` [Intel-gfx] " Daniel Vetter
2014-10-20 15:35       ` Daniel Vetter
2014-10-20  6:37 ` [PATCH 6/6] drm/fb: add support for tiled monitor configurations Dave Airlie
2014-10-22  2:32 tile group support (v2) Dave Airlie
2014-10-22  2:32 ` [PATCH 3/6] drm/mst: cached EDID for logical ports Dave Airlie
2014-10-22  9:06   ` [Intel-gfx] " Daniel Vetter
2014-11-10  2:11     ` Dave Airlie

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