<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers/gpu/drm/bridge, branch linux-6.11.y</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>drm/bridge: tc358767: Fix link properties discovery</title>
<updated>2024-12-05T12:53:14+00:00</updated>
<author>
<name>Tomi Valkeinen</name>
<email>tomi.valkeinen@ideasonboard.com</email>
</author>
<published>2023-11-08T11:27:23+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=f4302986bb09acfd5f673ae7282f4fa76641e85e'/>
<id>f4302986bb09acfd5f673ae7282f4fa76641e85e</id>
<content type='text'>
[ Upstream commit 2d343723c7e1f9f6d64f721f07cfdfc2993758d1 ]

When a display controller driver uses DRM_BRIDGE_ATTACH_NO_CONNECTOR,
tc358767 will behave properly and skip the creation of the connector.

However, tc_get_display_props(), which is used to find out about the DP
monitor and link, is only called from two places: .atomic_enable() and
tc_connector_get_modes(). The latter is only used when tc358767 creates
its own connector, i.e. when DRM_BRIDGE_ATTACH_NO_CONNECTOR is _not_
set.

Thus, the driver never finds out the link properties before get_edid()
is called. With num_lanes of 0 and link_rate of 0 there are not many
valid modes...

Fix this by adding tc_get_display_props() call at the beginning of
get_edid(), so that we have up to date information before looking at the
modes.

Reported-by: Jan Kiszka &lt;jan.kiszka@siemens.com&gt;
Closes: https://lore.kernel.org/all/24282420-b4dd-45b3-bb1c-fc37fe4a8205@siemens.com/
Fixes: de5e6c027ae6 ("drm/bridge: tc358767: add drm_panel_bridge support")
Reviewed-by: Aradhya Bhatia &lt;a-bhatia1@ti.com&gt;
Tested-by: Jan Kiszka &lt;jan.kiszka@siemens.com&gt;
Signed-off-by: Tomi Valkeinen &lt;tomi.valkeinen@ideasonboard.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20231108-tc358767-v2-2-25c5f70a2159@ideasonboard.com
Signed-off-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 2d343723c7e1f9f6d64f721f07cfdfc2993758d1 ]

When a display controller driver uses DRM_BRIDGE_ATTACH_NO_CONNECTOR,
tc358767 will behave properly and skip the creation of the connector.

However, tc_get_display_props(), which is used to find out about the DP
monitor and link, is only called from two places: .atomic_enable() and
tc_connector_get_modes(). The latter is only used when tc358767 creates
its own connector, i.e. when DRM_BRIDGE_ATTACH_NO_CONNECTOR is _not_
set.

Thus, the driver never finds out the link properties before get_edid()
is called. With num_lanes of 0 and link_rate of 0 there are not many
valid modes...

Fix this by adding tc_get_display_props() call at the beginning of
get_edid(), so that we have up to date information before looking at the
modes.

Reported-by: Jan Kiszka &lt;jan.kiszka@siemens.com&gt;
Closes: https://lore.kernel.org/all/24282420-b4dd-45b3-bb1c-fc37fe4a8205@siemens.com/
Fixes: de5e6c027ae6 ("drm/bridge: tc358767: add drm_panel_bridge support")
Reviewed-by: Aradhya Bhatia &lt;a-bhatia1@ti.com&gt;
Tested-by: Jan Kiszka &lt;jan.kiszka@siemens.com&gt;
Signed-off-by: Tomi Valkeinen &lt;tomi.valkeinen@ideasonboard.com&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20231108-tc358767-v2-2-25c5f70a2159@ideasonboard.com
Signed-off-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge: it6505: Drop EDID cache on bridge power off</title>
<updated>2024-12-05T12:53:11+00:00</updated>
<author>
<name>Pin-yen Lin</name>
<email>treapking@chromium.org</email>
</author>
<published>2024-09-26T09:29:09+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=26dd231990b7d8b17d652af0734f81e93a9df503'/>
<id>26dd231990b7d8b17d652af0734f81e93a9df503</id>
<content type='text'>
[ Upstream commit 574c558ddb68591c9a4b7a95e45e935ab22c0fc6 ]

The bridge might miss the display change events when it's powered off.
This happens when a user changes the external monitor when the system
is suspended and the embedded controller doesn't not wake AP up.

It's also observed that one DP-to-HDMI bridge doesn't work correctly
when there is no EDID read after it is powered on.

Drop the cache to force an EDID read after system resume to fix this.

Fixes: 11feaef69d0c ("drm/bridge: it6505: Add caching for EDID")
Signed-off-by: Pin-yen Lin &lt;treapking@chromium.org&gt;
Reviewed-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Reviewed-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240926092931.3870342-3-treapking@chromium.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 574c558ddb68591c9a4b7a95e45e935ab22c0fc6 ]

The bridge might miss the display change events when it's powered off.
This happens when a user changes the external monitor when the system
is suspended and the embedded controller doesn't not wake AP up.

It's also observed that one DP-to-HDMI bridge doesn't work correctly
when there is no EDID read after it is powered on.

Drop the cache to force an EDID read after system resume to fix this.

Fixes: 11feaef69d0c ("drm/bridge: it6505: Add caching for EDID")
Signed-off-by: Pin-yen Lin &lt;treapking@chromium.org&gt;
Reviewed-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Reviewed-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240926092931.3870342-3-treapking@chromium.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge: anx7625: Drop EDID cache on bridge power off</title>
<updated>2024-12-05T12:53:10+00:00</updated>
<author>
<name>Pin-yen Lin</name>
<email>treapking@chromium.org</email>
</author>
<published>2024-09-26T09:29:08+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=619b60e0f4b34bbab7c8640a2dc9c76331beed77'/>
<id>619b60e0f4b34bbab7c8640a2dc9c76331beed77</id>
<content type='text'>
[ Upstream commit 00ae002116a14c2e6a342c4c9ae080cdbb9b4b21 ]

The bridge might miss the display change events when it's powered off.
This happens when a user changes the external monitor when the system
is suspended and the embedded controller doesn't not wake AP up.

It's also observed that one DP-to-HDMI bridge doesn't work correctly
when there is no EDID read after it is powered on.

Drop the cache to force an EDID read after system resume to fix this.

Fixes: 8bdfc5dae4e3 ("drm/bridge: anx7625: Add anx7625 MIPI DSI/DPI to DP")
Signed-off-by: Pin-yen Lin &lt;treapking@chromium.org&gt;
Reviewed-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Reviewed-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240926092931.3870342-2-treapking@chromium.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 00ae002116a14c2e6a342c4c9ae080cdbb9b4b21 ]

The bridge might miss the display change events when it's powered off.
This happens when a user changes the external monitor when the system
is suspended and the embedded controller doesn't not wake AP up.

It's also observed that one DP-to-HDMI bridge doesn't work correctly
when there is no EDID read after it is powered on.

Drop the cache to force an EDID read after system resume to fix this.

Fixes: 8bdfc5dae4e3 ("drm/bridge: anx7625: Add anx7625 MIPI DSI/DPI to DP")
Signed-off-by: Pin-yen Lin &lt;treapking@chromium.org&gt;
Reviewed-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Reviewed-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240926092931.3870342-2-treapking@chromium.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge: tc358768: Fix DSI command tx</title>
<updated>2024-11-22T14:39:54+00:00</updated>
<author>
<name>Francesco Dolcini</name>
<email>francesco.dolcini@toradex.com</email>
</author>
<published>2024-09-26T14:12:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=5f37c4ca89714df52736c4ab6ae6755c4ef44811'/>
<id>5f37c4ca89714df52736c4ab6ae6755c4ef44811</id>
<content type='text'>
commit 32c4514455b2b8fde506f8c0962f15c7e4c26f1d upstream.

Wait for the command transmission to be completed in the DSI transfer
function polling for the dc_start bit to go back to idle state after the
transmission is started.

This is documented in the datasheet and failures to do so lead to
commands corruption.

Fixes: ff1ca6397b1d ("drm/bridge: Add tc358768 driver")
Cc: stable@vger.kernel.org
Signed-off-by: Francesco Dolcini &lt;francesco.dolcini@toradex.com&gt;
Reviewed-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Link: https://lore.kernel.org/r/20240926141246.48282-1-francesco@dolcini.it
Signed-off-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240926141246.48282-1-francesco@dolcini.it
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 32c4514455b2b8fde506f8c0962f15c7e4c26f1d upstream.

Wait for the command transmission to be completed in the DSI transfer
function polling for the dc_start bit to go back to idle state after the
transmission is started.

This is documented in the datasheet and failures to do so lead to
commands corruption.

Fixes: ff1ca6397b1d ("drm/bridge: Add tc358768 driver")
Cc: stable@vger.kernel.org
Signed-off-by: Francesco Dolcini &lt;francesco.dolcini@toradex.com&gt;
Reviewed-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Link: https://lore.kernel.org/r/20240926141246.48282-1-francesco@dolcini.it
Signed-off-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240926141246.48282-1-francesco@dolcini.it
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge: Fix assignment of the of_node of the parent to aux bridge</title>
<updated>2024-11-01T01:02:42+00:00</updated>
<author>
<name>Abel Vesa</name>
<email>abel.vesa@linaro.org</email>
</author>
<published>2024-10-18T12:49:34+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=3f73d7b3c487e51127627b2339451272a60ed754'/>
<id>3f73d7b3c487e51127627b2339451272a60ed754</id>
<content type='text'>
commit 85e444a68126a631221ae32c63fce882bb18a262 upstream.

The assignment of the of_node to the aux bridge needs to mark the
of_node as reused as well, otherwise resource providers like pinctrl will
report a gpio as already requested by a different device when both pinconf
and gpios property are present.
Fix that by using the device_set_of_node_from_dev() helper instead.

Fixes: 6914968a0b52 ("drm/bridge: properly refcount DT nodes in aux bridge drivers")
Cc: stable@vger.kernel.org      # 6.8
Cc: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Signed-off-by: Abel Vesa &lt;abel.vesa@linaro.org&gt;
Reviewed-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Reviewed-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Link: https://lore.kernel.org/r/20241018-drm-aux-bridge-mark-of-node-reused-v2-1-aeed1b445c7d@linaro.org
Signed-off-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20241018-drm-aux-bridge-mark-of-node-reused-v2-1-aeed1b445c7d@linaro.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 85e444a68126a631221ae32c63fce882bb18a262 upstream.

The assignment of the of_node to the aux bridge needs to mark the
of_node as reused as well, otherwise resource providers like pinctrl will
report a gpio as already requested by a different device when both pinconf
and gpios property are present.
Fix that by using the device_set_of_node_from_dev() helper instead.

Fixes: 6914968a0b52 ("drm/bridge: properly refcount DT nodes in aux bridge drivers")
Cc: stable@vger.kernel.org      # 6.8
Cc: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Signed-off-by: Abel Vesa &lt;abel.vesa@linaro.org&gt;
Reviewed-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Reviewed-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Link: https://lore.kernel.org/r/20241018-drm-aux-bridge-mark-of-node-reused-v2-1-aeed1b445c7d@linaro.org
Signed-off-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20241018-drm-aux-bridge-mark-of-node-reused-v2-1-aeed1b445c7d@linaro.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge: lontium-lt8912b: Validate mode in drm_bridge_funcs::mode_valid()</title>
<updated>2024-10-04T14:37:46+00:00</updated>
<author>
<name>Liu Ying</name>
<email>victor.liu@nxp.com</email>
</author>
<published>2024-08-13T09:16:37+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ecf264933f8cc031e611c893b3e23a28e47643b2'/>
<id>ecf264933f8cc031e611c893b3e23a28e47643b2</id>
<content type='text'>
[ Upstream commit fe828fbd87786238b30f44cafd698d975d956c97 ]

If the bridge is attached with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag set,
this driver won't initialize a connector and hence display mode won't be
validated in drm_connector_helper_funcs::mode_valid().  So, move the mode
validation from drm_connector_helper_funcs::mode_valid() to
drm_bridge_funcs::mode_valid(), because the mode validation is always done
for the bridge.

Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Liu Ying &lt;victor.liu@nxp.com&gt;
Reviewed-by: Robert Foss &lt;rfoss@kernel.org&gt;
Signed-off-by: Robert Foss &lt;rfoss@kernel.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240813091637.1054586-1-victor.liu@nxp.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit fe828fbd87786238b30f44cafd698d975d956c97 ]

If the bridge is attached with the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag set,
this driver won't initialize a connector and hence display mode won't be
validated in drm_connector_helper_funcs::mode_valid().  So, move the mode
validation from drm_connector_helper_funcs::mode_valid() to
drm_bridge_funcs::mode_valid(), because the mode validation is always done
for the bridge.

Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Liu Ying &lt;victor.liu@nxp.com&gt;
Reviewed-by: Robert Foss &lt;rfoss@kernel.org&gt;
Signed-off-by: Robert Foss &lt;rfoss@kernel.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240813091637.1054586-1-victor.liu@nxp.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge-connector: move to DRM_DISPLAY_HELPER module</title>
<updated>2024-09-03T08:18:31+00:00</updated>
<author>
<name>Dmitry Baryshkov</name>
<email>dmitry.baryshkov@linaro.org</email>
</author>
<published>2024-09-03T02:01:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=9da7ec9b19d8c1ad4f44e459fa5f93ad7a117dcd'/>
<id>9da7ec9b19d8c1ad4f44e459fa5f93ad7a117dcd</id>
<content type='text'>
drm_bridge_connector is a "leaf" driver, belonging to the display
helper, rather than the "CRTC" drm_kms_helper module. Move the driver
to the drm/display and add necessary Kconfig selection clauses.

Suggested-by: Maxime Ripard &lt;mripard@kernel.org&gt;
Acked-by: Maxime Ripard &lt;mripard@kernel.org&gt;
Signed-off-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240903-drm-bridge-connector-fix-hdmi-reset-v5-2-daebde6d9857@linaro.org
Signed-off-by: Maxime Ripard &lt;mripard@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
drm_bridge_connector is a "leaf" driver, belonging to the display
helper, rather than the "CRTC" drm_kms_helper module. Move the driver
to the drm/display and add necessary Kconfig selection clauses.

Suggested-by: Maxime Ripard &lt;mripard@kernel.org&gt;
Acked-by: Maxime Ripard &lt;mripard@kernel.org&gt;
Signed-off-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240903-drm-bridge-connector-fix-hdmi-reset-v5-2-daebde6d9857@linaro.org
Signed-off-by: Maxime Ripard &lt;mripard@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'drm-next-2024-07-18' of https://gitlab.freedesktop.org/drm/kernel</title>
<updated>2024-07-18T16:34:02+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2024-07-18T16:34:02+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=b3ce7a30847a54a7f96a35e609303d8afecd460b'/>
<id>b3ce7a30847a54a7f96a35e609303d8afecd460b</id>
<content type='text'>
Pull drm updates from Dave Airlie:
 "There's a lot of stuff in here, amd, i915 and xe have new platform
  work, lots of core rework around EDID handling, some new COMPILE_TEST
  options, maintainer changes and a lots of other stuff. Summary:

  core:
   - deprecate DRM data and return 0 date
   - connector: Create a set of helpers to help with HDMI support
   - Remove driver owner assignments
   - Allow more drivers to compile with COMPILE_TEST
   - Conversions to drm_edid
   - Sprinkle MODULE_DESCRIPTIONS everywhere they are missing
   - Remove drm_mm_replace_node
   - print: Add a drm prefix to warn level messages too, remove
            ___drm_dbg, consolidate prefix handling
   - New monochrome TV mode variant

  ttm:
   - improve number of page faults on some platforms
   - fix test builds under PREEMPT_RT
   - more test coverage

  ci:
   - Require a more recent version of mesa
   - improve farm setup and test generation

  dma-buf:
   - warn if reserving 0 fence slots
   - internal API heap enhancements

  fbdev:
   - Create memory manager optimized fbdev emulation

  panic:
   - Allow to select fonts
   - improve drm_fb_dma_get_scanout_buffer
   - Allow to dump kmsg to the screen

  bridge:
   - Remove redundant checks on bridge-&gt;encoder
   - Remove drm_bridge_chain_mode_fixup
   - bridge-connector: Plumb in the new HDMI helper
   - analogix_dp: Various improvements, handle AUX transfers timeout
   - samsung-dsim: Fix timings calculation
   - tc358767: Plenty of small fixes, fix no connector attach, fix
               clocks
   - sii902x: state validation improvements

  panels:
   - Switch panels from register table initialization to proper code
   - Now that the panel code tracks the panel state, remove every ad-hoc
     implementation in the panel drivers
   - More cleanup of prepare / enable state tracking in drivers
   - edp: Drop legacy panel compatibles
   - simple-bridge: Switch to devm_drm_bridge_add
   - New panels: Lincoln Tech Sol LCD185-101CT, Microtips Technology
                 13-101HIEBCAF0-C, Microtips Technology MF-103HIEB0GA0,
                 BOE nv110wum-l60, IVO t109nw41, WL-355608-A8, PrimeView
                 PM070WL4, Lincoln Technologies LCD197, Ortustech
                 COM35H3P70ULC, AUO G104STN01, K&amp;d kd101ne3-40ti

  amdgpu:
   - DCN 4.0.x support
   - GC 12.0 support
   - GMC 12.0 support
   - SDMA 7.0 support
   - MES12 support
   - MMHUB 4.1 support
   - GFX12 modifier and DCC support
   - lots of IP fixes/updates

  amdkfd:
   - Contiguous VRAM allocations
   - GC 12.0 support
   - SDMA 7.0 support
   - SR-IOV fixes
   - KFD GFX ALU exceptions

  i915:
   - Battlemage Xe2 HPD display enablement
   - Panel Replay enabling
   - DP AUX-less ALPM/LOBF
   - Enable link training failure fallback for DP MST links
   - CMRR (Content Match Refresh Rate) enabling
   - Increase ADL-S/ADL-P/DG2+ max TMDS bitrate to 6 Gbps
   - Enable eDP AUX based HDR backlight
   - Support replaying GPU hangs with captured context image
   - Automate CCS Mode setting during engine resets
   - lots of refactoring
   - Support replaying GPU hangs with captured context image
   - Increase FLR timeout from 3s to 9s
   - Enable w/a 16021333562 for DG2, MTL and ARL [guc]

  xe:
   - update MAINATINERS
   - New uapi adding OA functionality to Xe
   - expose l3 bank mask
   - fix display detect on ADL-N
   - runtime PM Fixes
   - Fix silent backmerge issues
   - More prep for SR-IOV
   - HWmon additions
   - per client usage info
   - Rework GPU page fault handling
   - Drop EXEC_QUEUE_FLAG_BANNED
   - Add BMG PCI IDs
   - Scheduler fixes and improvements
   - Rename xe_exec_queue::compute to xe_exec_queue::lr
   - Use ttm_uncached for BO with NEEDS_UC flag
   - Rename xe perf layer as xe observation layer
   - lots of refactoring

  radeon:
   - Backlight workaround for iMac
   - Silence UBSAN flex array warnings

  msm:
   - Validate registers XML description against schema in CI
   - core/dpu: SM7150 support
   - mdp5: Add support for MSM8937
   - gpu: Add param for userspace to know if raytracing is supported
   - gpu: X185 support (aka gpu in X1 laptop chips)
   - gpu: a505 support

  ivpu:
   - hardware scheduler support
   - profiling support
   - improvements to the platform support layer
   - firmware handling improvements
   - clocks/power mgmt improvements
   - scheduler/logging improvements

  habanalabs:
   - Gradual sleep in polling memory macro
   - Reduce Gaudi2 MSI-X interrupt count to 128
   - Add Gaudi2-D revision support
   - Add timestamp to CPLD info
   - Gaudi2: Assume hard-reset by firmware upon MC SEI severe error
   - Align Gaudi2 interrupt names
   - Check for errors after preboot is ready
   - Change habanalabs maintainer and git repo path

  mgag200:
   - refactoring and improvements
   - Add BMC output
   - enable polling

  nouveau:
   - add registry command line

  v3d:
   - perf counters improvements

  zynqmp:
   - irq and debugfs improvements

  atmel-hlcdc:
   - Support XLCDC in sam9x7

  mipi-dbi:
   - Remove mipi_dbi_machine_little_endian
   - make SPI bits per word configurable
   - support RGB888
   - allow pixel formats to be specified in the DT

  sun4i:
   - Rework the blender setup for DE2

  panfrost:
   - Enable MT8188 support

  vc4:
   - Monochrome TV support

  exynos:
   - fix fallback mode regression
   - fix memory leak
   - Use drm_edid_duplicate() instead of kmemdup()

  etnaviv:
   - fix i.MX8MP NPU clock gating
   - workaround FE register cdc issues on some cores
   - fix DMA sync handling for cached buffers
   - fix job timeout handling
   - keep TS enabled on MMUv2 cores for improved performance

  mediatek:
   - Convert to platform remove callback returning void-
   - Drop chain_mode_fixup call in mode_valid()
   - Fixes the errors of MediaTek display driver found by IGT
   - Add display support for the MT8365-EVK board
   - Fix bit depth overwritten for mtk_ovl_set bit_depth()
   - Fix possible_crtcs calculation
   - Fix spurious kfree()

  ast:
   - refactor mode setting code

  stm:
   - Add LVDS support
   - DSI PHY updates"

* tag 'drm-next-2024-07-18' of https://gitlab.freedesktop.org/drm/kernel: (2501 commits)
  drm/amdgpu/mes12: add missing opcode string
  drm/amdgpu/mes11: update opcode strings
  Revert "drm/amd/display: Reset freesync config before update new state"
  drm/omap: Restrict compile testing to PAGE_SIZE less than 64KB
  drm/xe: Drop trace_xe_hw_fence_free
  drm/xe/uapi: Rename xe perf layer as xe observation layer
  drm/amdgpu: remove exp hw support check for gfx12
  drm/amdgpu: timely save bad pages to eeprom after gpu ras reset is completed
  drm/amdgpu: flush all cached ras bad pages to eeprom
  drm/amdgpu: select compute ME engines dynamically
  drm/amd/display: Allow display DCC for DCN401
  drm/amdgpu: select compute ME engines dynamically
  drm/amdgpu/job: Replace DRM_INFO/ERROR logging
  drm/amdgpu: select compute ME engines dynamically
  drm/amd/pm: Ignore initial value in smu response register
  drm/amdgpu: Initialize VF partition mode
  drm/amd/amdgpu: fix SDMA IRQ client ID &lt;-&gt; req mapping
  MAINTAINERS: fix Xinhui's name
  MAINTAINERS: update powerplay and swsmu
  drm/qxl: Pin buffer objects for internal mappings
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull drm updates from Dave Airlie:
 "There's a lot of stuff in here, amd, i915 and xe have new platform
  work, lots of core rework around EDID handling, some new COMPILE_TEST
  options, maintainer changes and a lots of other stuff. Summary:

  core:
   - deprecate DRM data and return 0 date
   - connector: Create a set of helpers to help with HDMI support
   - Remove driver owner assignments
   - Allow more drivers to compile with COMPILE_TEST
   - Conversions to drm_edid
   - Sprinkle MODULE_DESCRIPTIONS everywhere they are missing
   - Remove drm_mm_replace_node
   - print: Add a drm prefix to warn level messages too, remove
            ___drm_dbg, consolidate prefix handling
   - New monochrome TV mode variant

  ttm:
   - improve number of page faults on some platforms
   - fix test builds under PREEMPT_RT
   - more test coverage

  ci:
   - Require a more recent version of mesa
   - improve farm setup and test generation

  dma-buf:
   - warn if reserving 0 fence slots
   - internal API heap enhancements

  fbdev:
   - Create memory manager optimized fbdev emulation

  panic:
   - Allow to select fonts
   - improve drm_fb_dma_get_scanout_buffer
   - Allow to dump kmsg to the screen

  bridge:
   - Remove redundant checks on bridge-&gt;encoder
   - Remove drm_bridge_chain_mode_fixup
   - bridge-connector: Plumb in the new HDMI helper
   - analogix_dp: Various improvements, handle AUX transfers timeout
   - samsung-dsim: Fix timings calculation
   - tc358767: Plenty of small fixes, fix no connector attach, fix
               clocks
   - sii902x: state validation improvements

  panels:
   - Switch panels from register table initialization to proper code
   - Now that the panel code tracks the panel state, remove every ad-hoc
     implementation in the panel drivers
   - More cleanup of prepare / enable state tracking in drivers
   - edp: Drop legacy panel compatibles
   - simple-bridge: Switch to devm_drm_bridge_add
   - New panels: Lincoln Tech Sol LCD185-101CT, Microtips Technology
                 13-101HIEBCAF0-C, Microtips Technology MF-103HIEB0GA0,
                 BOE nv110wum-l60, IVO t109nw41, WL-355608-A8, PrimeView
                 PM070WL4, Lincoln Technologies LCD197, Ortustech
                 COM35H3P70ULC, AUO G104STN01, K&amp;d kd101ne3-40ti

  amdgpu:
   - DCN 4.0.x support
   - GC 12.0 support
   - GMC 12.0 support
   - SDMA 7.0 support
   - MES12 support
   - MMHUB 4.1 support
   - GFX12 modifier and DCC support
   - lots of IP fixes/updates

  amdkfd:
   - Contiguous VRAM allocations
   - GC 12.0 support
   - SDMA 7.0 support
   - SR-IOV fixes
   - KFD GFX ALU exceptions

  i915:
   - Battlemage Xe2 HPD display enablement
   - Panel Replay enabling
   - DP AUX-less ALPM/LOBF
   - Enable link training failure fallback for DP MST links
   - CMRR (Content Match Refresh Rate) enabling
   - Increase ADL-S/ADL-P/DG2+ max TMDS bitrate to 6 Gbps
   - Enable eDP AUX based HDR backlight
   - Support replaying GPU hangs with captured context image
   - Automate CCS Mode setting during engine resets
   - lots of refactoring
   - Support replaying GPU hangs with captured context image
   - Increase FLR timeout from 3s to 9s
   - Enable w/a 16021333562 for DG2, MTL and ARL [guc]

  xe:
   - update MAINATINERS
   - New uapi adding OA functionality to Xe
   - expose l3 bank mask
   - fix display detect on ADL-N
   - runtime PM Fixes
   - Fix silent backmerge issues
   - More prep for SR-IOV
   - HWmon additions
   - per client usage info
   - Rework GPU page fault handling
   - Drop EXEC_QUEUE_FLAG_BANNED
   - Add BMG PCI IDs
   - Scheduler fixes and improvements
   - Rename xe_exec_queue::compute to xe_exec_queue::lr
   - Use ttm_uncached for BO with NEEDS_UC flag
   - Rename xe perf layer as xe observation layer
   - lots of refactoring

  radeon:
   - Backlight workaround for iMac
   - Silence UBSAN flex array warnings

  msm:
   - Validate registers XML description against schema in CI
   - core/dpu: SM7150 support
   - mdp5: Add support for MSM8937
   - gpu: Add param for userspace to know if raytracing is supported
   - gpu: X185 support (aka gpu in X1 laptop chips)
   - gpu: a505 support

  ivpu:
   - hardware scheduler support
   - profiling support
   - improvements to the platform support layer
   - firmware handling improvements
   - clocks/power mgmt improvements
   - scheduler/logging improvements

  habanalabs:
   - Gradual sleep in polling memory macro
   - Reduce Gaudi2 MSI-X interrupt count to 128
   - Add Gaudi2-D revision support
   - Add timestamp to CPLD info
   - Gaudi2: Assume hard-reset by firmware upon MC SEI severe error
   - Align Gaudi2 interrupt names
   - Check for errors after preboot is ready
   - Change habanalabs maintainer and git repo path

  mgag200:
   - refactoring and improvements
   - Add BMC output
   - enable polling

  nouveau:
   - add registry command line

  v3d:
   - perf counters improvements

  zynqmp:
   - irq and debugfs improvements

  atmel-hlcdc:
   - Support XLCDC in sam9x7

  mipi-dbi:
   - Remove mipi_dbi_machine_little_endian
   - make SPI bits per word configurable
   - support RGB888
   - allow pixel formats to be specified in the DT

  sun4i:
   - Rework the blender setup for DE2

  panfrost:
   - Enable MT8188 support

  vc4:
   - Monochrome TV support

  exynos:
   - fix fallback mode regression
   - fix memory leak
   - Use drm_edid_duplicate() instead of kmemdup()

  etnaviv:
   - fix i.MX8MP NPU clock gating
   - workaround FE register cdc issues on some cores
   - fix DMA sync handling for cached buffers
   - fix job timeout handling
   - keep TS enabled on MMUv2 cores for improved performance

  mediatek:
   - Convert to platform remove callback returning void-
   - Drop chain_mode_fixup call in mode_valid()
   - Fixes the errors of MediaTek display driver found by IGT
   - Add display support for the MT8365-EVK board
   - Fix bit depth overwritten for mtk_ovl_set bit_depth()
   - Fix possible_crtcs calculation
   - Fix spurious kfree()

  ast:
   - refactor mode setting code

  stm:
   - Add LVDS support
   - DSI PHY updates"

* tag 'drm-next-2024-07-18' of https://gitlab.freedesktop.org/drm/kernel: (2501 commits)
  drm/amdgpu/mes12: add missing opcode string
  drm/amdgpu/mes11: update opcode strings
  Revert "drm/amd/display: Reset freesync config before update new state"
  drm/omap: Restrict compile testing to PAGE_SIZE less than 64KB
  drm/xe: Drop trace_xe_hw_fence_free
  drm/xe/uapi: Rename xe perf layer as xe observation layer
  drm/amdgpu: remove exp hw support check for gfx12
  drm/amdgpu: timely save bad pages to eeprom after gpu ras reset is completed
  drm/amdgpu: flush all cached ras bad pages to eeprom
  drm/amdgpu: select compute ME engines dynamically
  drm/amd/display: Allow display DCC for DCN401
  drm/amdgpu: select compute ME engines dynamically
  drm/amdgpu/job: Replace DRM_INFO/ERROR logging
  drm/amdgpu: select compute ME engines dynamically
  drm/amd/pm: Ignore initial value in smu response register
  drm/amdgpu: Initialize VF partition mode
  drm/amd/amdgpu: fix SDMA IRQ client ID &lt;-&gt; req mapping
  MAINTAINERS: fix Xinhui's name
  MAINTAINERS: update powerplay and swsmu
  drm/qxl: Pin buffer objects for internal mappings
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/bridge: adv7511: Fix Intermittent EDID failures</title>
<updated>2024-07-08T13:03:11+00:00</updated>
<author>
<name>Adam Ford</name>
<email>aford173@gmail.com</email>
</author>
<published>2024-06-30T22:19:31+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=91f9f4a37124044089debb02a3965c59b5b10c21'/>
<id>91f9f4a37124044089debb02a3965c59b5b10c21</id>
<content type='text'>
In the process of adding support for shared IRQ pins, a scenario
was accidentally created where adv7511_irq_process returned
prematurely causing the EDID to fail randomly.

Since the interrupt handler is broken up into two main helper functions,
update both of them to treat the helper functions as IRQ handlers. These
IRQ routines process their respective tasks as before, but if they
determine that actual work was done, mark the respective IRQ status
accordingly, and delay the check until everything has been processed.

This should guarantee the helper functions don't return prematurely
while still returning proper values of either IRQ_HANDLED or IRQ_NONE.

Reported-by: Liu Ying &lt;victor.liu@nxp.com&gt;
Fixes: f3d9683346d6 ("drm/bridge: adv7511: Allow IRQ to share GPIO pins")
Signed-off-by: Adam Ford &lt;aford173@gmail.com&gt;
Tested-by: Liu Ying &lt;victor.liu@nxp.com&gt; # i.MX8MP EVK ADV7535 EDID retrieval w/o IRQ
Reviewed-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240630221931.1650565-1-aford173@gmail.com
Signed-off-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;

V3:  Remove unnecessary declaration of ret by evaluating the return
     code of regmap_read directly.

V2:  Fix uninitialized cec_status
     Cut back a little on error handling to return either IRQ_NONE or
     IRQ_HANDLED.
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
In the process of adding support for shared IRQ pins, a scenario
was accidentally created where adv7511_irq_process returned
prematurely causing the EDID to fail randomly.

Since the interrupt handler is broken up into two main helper functions,
update both of them to treat the helper functions as IRQ handlers. These
IRQ routines process their respective tasks as before, but if they
determine that actual work was done, mark the respective IRQ status
accordingly, and delay the check until everything has been processed.

This should guarantee the helper functions don't return prematurely
while still returning proper values of either IRQ_HANDLED or IRQ_NONE.

Reported-by: Liu Ying &lt;victor.liu@nxp.com&gt;
Fixes: f3d9683346d6 ("drm/bridge: adv7511: Allow IRQ to share GPIO pins")
Signed-off-by: Adam Ford &lt;aford173@gmail.com&gt;
Tested-by: Liu Ying &lt;victor.liu@nxp.com&gt; # i.MX8MP EVK ADV7535 EDID retrieval w/o IRQ
Reviewed-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20240630221931.1650565-1-aford173@gmail.com
Signed-off-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;

V3:  Remove unnecessary declaration of ret by evaluating the return
     code of regmap_read directly.

V2:  Fix uninitialized cec_status
     Cut back a little on error handling to return either IRQ_NONE or
     IRQ_HANDLED.
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge v6.10-rc6 into drm-next</title>
<updated>2024-07-05T08:47:28+00:00</updated>
<author>
<name>Daniel Vetter</name>
<email>daniel.vetter@ffwll.ch</email>
</author>
<published>2024-07-05T08:35:14+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=86634fa4e6aeff2e190616c304156899beb4d76b'/>
<id>86634fa4e6aeff2e190616c304156899beb4d76b</id>
<content type='text'>
The exynos-next pull is based on a newer -rc than drm-next. hence
backmerge first to make sure the unrelated conflicts we accumulated
don't end up randomly in the exynos merge pull, but are separated out.

Conflicts are all benign: Adjacent changes in amdgpu and fbdev-dma
code, and cherry-pick conflict in xe.

Signed-off-by: Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The exynos-next pull is based on a newer -rc than drm-next. hence
backmerge first to make sure the unrelated conflicts we accumulated
don't end up randomly in the exynos merge pull, but are separated out.

Conflicts are all benign: Adjacent changes in amdgpu and fbdev-dma
code, and cherry-pick conflict in xe.

Signed-off-by: Daniel Vetter &lt;daniel.vetter@ffwll.ch&gt;
</pre>
</div>
</content>
</entry>
</feed>
