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drm/dp/mst: split connector registration into two parts (v2)

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In order to cache the EDID properly for tiled displays, we
need to retrieve it before we register the connector with
userspace, otherwise userspace can call get resources
and try and get the edid before we've even cached it.

This fixes some problems when hotplugging mst monitors,
with X/mutter running. As mutter seems to get 0 modes
for one of the monitors in the tile.

v2: fix warning in radeon
handle tile setting in cached path rather than
get edid path.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2015-09-16 17:55:23 +10:00
parent 68d8c9fc91
commit d9515c5ec1
4 changed files with 23 additions and 6 deletions
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11
drivers/gpu/drm/radeon/radeon_dp_mst.c
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@@ -265,7 +265,6 @@ static struct drm_connector *radeon_dp_add_mst_connector(struct drm_dp_mst_topol
{
struct radeon_connector *master = container_of(mgr, struct radeon_connector, mst_mgr);
struct drm_device *dev = master->base.dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_connector *radeon_connector;
struct drm_connector *connector;
@@ -286,12 +285,19 @@ static struct drm_connector *radeon_dp_add_mst_connector(struct drm_dp_mst_topol
drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0);
drm_mode_connector_set_path_property(connector, pathprop);
return connector;
}
static void radeon_dp_register_mst_connector(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct radeon_device *rdev = dev->dev_private;
drm_modeset_lock_all(dev);
radeon_fb_add_connector(rdev, connector);
drm_modeset_unlock_all(dev);
drm_connector_register(connector);
return connector;
}
static void radeon_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
@@ -324,6 +330,7 @@ static void radeon_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
struct drm_dp_mst_topology_cbs mst_cbs = {
.add_connector = radeon_dp_add_mst_connector,
.register_connector = radeon_dp_register_mst_connector,
.destroy_connector = radeon_dp_destroy_mst_connector,
.hotplug = radeon_dp_mst_hotplug,
};