linux-toradex.git/include/drm/drm_dp_mst_helper.h, branch v4.9.82

drm/dp-mst: Missing kernel doc

2016-07-19T08:31:53+00:00

Cc: Dave Airlie 
Acked-by: Chris Wilson 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1468612088-9721-7-git-send-email-daniel.vetter@ffwll.ch

drm/dp-mst: Remove tx_down_in_progress

2016-07-19T08:31:40+00:00

Just replicates whether the list is empty or not. Nuke code
to avoid writing docs for it!

Cc: Dave Airlie 
Reviewed-by: Chris Wilson 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1468612088-9721-6-git-send-email-daniel.vetter@ffwll.ch

drm/dp/mst: move GUID storage from mgr, port to only mst branch

2016-02-05T05:23:49+00:00

Previous implementation does not handle case below: boot up one MST branch
to DP connector of ASIC. After boot up, hot plug 2nd MST branch to DP output
of 1st MST, GUID is not created for 2nd MST branch. When downstream port of
2nd MST branch send upstream request, it fails because 2nd MST branch GUID
is not available.

New Implementation: only create GUID for MST branch and save it within Branch.

Signed-off-by: Hersen Wu 
Reviewed-by: Harry Wentland 
Cc: stable@vger.kernel.org
Acked-by: Alex Deucher 
Signed-off-by: Dave Airlie

Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next

2016-01-17T21:01:16+00:00

Since your main drm-next pull isn't out of the door yet I figured I might
as well flush out drm-misc instead of delaying for 4.6. It's really just
random stuff all over, biggest thing probably connector_mask tracking from
Maarten.

* tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel: (24 commits)
  drm/fb_cma_helper: Remove implicit call to disable_unused_functions
  drm/sysfs: use kobj_to_dev()
  drm/i915: Init power domains early in driver load
  drm: Do not set connector->encoder in drivers
  apple-gmux: Add initial documentation
  drm: move MODULE_PARM_DESC to other file
  drm/edid: index CEA/HDMI mode tables using the VIC
  drm/atomic: Remove drm_atomic_connectors_for_crtc.
  drm/i915: Update connector_mask during readout, v2.
  drm: Remove opencoded drm_gem_object_release_handle()
  drm: Do not set outparam on error during GEM handle allocation
  drm/docs: more leftovers from the big vtable documentation pile
  drm/atomic-helper: Reject legacy flips on a disabled pipe
  drm/atomic: add connector mask to drm_crtc_state.
  drm/tegra: Use __drm_atomic_helper_reset_connector for subclassing connector state, v2.
  drm/atomic: Add __drm_atomic_helper_connector_reset, v2.
  drm/i915: Set connector_state->connector using the helper.
  drm: Use a normal idr allocation for the obj->name
  drm: Only bump object-reference count when adding first handle
  drm: Balance error path for GEM handle allocation
  ...

drm/dp/mst: always send reply for UP request

2016-01-04T17:05:55+00:00

We should always send reply for UP request in order
to make downstream device clean-up resources appropriately.

Issue was that reply for UP request was sent only once.

Acked-by: Dave Airlie 
Signed-off-by: Mykola Lysenko 
Signed-off-by: Alex Deucher 
Cc: stable@vger.kernel.org

drm/dp/mst: constify drm_dp_mst_topology_cbs structures

2016-01-04T07:09:58+00:00

The drm_dp_mst_topology_cbs structures are never modified, so declare them
as const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall 
Signed-off-by: Daniel Vetter

dp/mst: add SDP stream support

2015-12-10T09:00:42+00:00

This adds code to initialise the SDP streams
for a sink in the simplest ordering.

I've no idea how you'd want to control the
ordering at this level, so don't bother
until someone comes up with a use case.

Reviewed-by: Ander Conselvan de Oliveira 
Signed-off-by: Libin Yang 
Signed-off-by: Dave Airlie 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1449036584-105393-1-git-send-email-libin.yang@linux.intel.com

drm/dp/mst: make mst i2c transfer code more robust.

2015-10-14T23:06:20+00:00

This zeroes the msg so no random stack data ends up getting
sent, it also limits the function to not accepting > 4
i2c msgs.

Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter 
Signed-off-by: Dave Airlie

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

2015-10-02T05:34:41+00:00

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 
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie

drm/dp/mst: close deadlock in connector destruction.

2015-06-25T01:57:23+00:00

I've only seen this once, and I failed to capture the
lockdep backtrace, but I did some investigations.

If we are calling into the MST layer from EDID probing,
we have the mode_config mutex held, if during that EDID
probing, the MST hub goes away, then we can get a deadlock
where the connector destruction function in the driver
tries to retake the mode config mutex.

This offloads connector destruction to a workqueue,
and avoid the subsequenct lock ordering issue.

Acked-by: Daniel Vetter 
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie