linux-toradex.git/include/drm/drm_dp_mst_helper.h, branch v4.4.76

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

2016-03-03T23:07:21+00:00

commit 5e93b8208d3c419b515fb75e2601931c027e12ab upstream.

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 
Acked-by: Alex Deucher 
Signed-off-by: Dave Airlie 
Signed-off-by: Greg Kroah-Hartman

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

2016-03-03T23:07:20+00:00

commit 1f16ee7fa13649f4e55aa48ad31c3eb0722a62d3 upstream.

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 
Signed-off-by: Greg Kroah-Hartman

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

drm/dp_mst: add a function to retrieve vcpi slots

2015-03-19T16:26:45+00:00

radeon requires this to get the slots for later filling
out a table on every transition.

Signed-off-by: Dave Airlie 
Signed-off-by: Alex Deucher

drm/mst: cached EDID for logical ports (v2)

2014-12-08T23:56:47+00:00

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.

v2: drop misplace tile property line, meant for other patch.

Signed-off-by: Dave Airlie

Merge tag 'drm/fixes/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux into drm-next

2014-11-14T23:37:20+00:00

drm: Miscellaneous fixes for v3.19-rc1

This is a small collection of fixes that I've been carrying around for a
while now. Many of these have been posted and reviewed or acked. The few
that haven't I deemed too trivial to bother.

* tag 'drm/fixes/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux:
  video/hdmi: Relicense header under MIT license
  drm/gma500: mdfld: Reuse video/mipi_display.h
  drm: Make drm_mode_create_tv_properties() signature consistent
  drm: Implement drm_get_pci_dev() dummy for !PCI
  drm/prime: Use unsigned type for number of pages
  drm/gem: Fix typo in kerneldoc
  drm: Use const data when creating blob properties
  drm: Use size_t for blob property sizes

drm: Use const data when creating blob properties

2014-11-13T09:43:49+00:00

Creating a blob property will always copy the input data so the data
that is passed in can be const.

Signed-off-by: Thierry Reding

Merge tag 'topic/core-stuff-2014-11-05' of git://anongit.freedesktop.org/drm-intel into drm-next

2014-11-07T00:58:46+00:00

Just various stuff all over from a bunch of people. Shortlog gives a beter
overview, it's really all misc drm patches.

* tag 'topic/core-stuff-2014-11-05' of git://anongit.freedesktop.org/drm-intel:
  drm/edid: add #defines and helpers for ELD
  drm/dp: Add counters in the drm_dp_aux struct for I2C NACKs and DEFERs
  drm: Remove compiler BUG_ON() test
  drm: Fix DRM_FORCE_ON_DIGITAL use
  drm/gma500: Don't destroy DRM properties in the driver
  drm/i915: Don't destroy DRM properties in the driver
  drm: Add a note to drm_property_create() about property lifetime
  gpu: drm: Fix warning caused by a parameter description in drm_crtc.c
  drm/dp-helper: Move the legacy helpers to gma500
  drm/crtc: Remove duplicated ioctl code
  drm/crtc: Fix two typos
  gpu:drm: Fix typo in Documentation/DocBook/drm.xml
  gpu: drm: drm_dp_mst_topology.c: Fix improper use of strncat
  drm: drm_err: Remove unnecessary __func__ argument
  drm: Implement O_NONBLOCK support on /dev/dri/cardN