drm/panthor: call into devfreq for current frequency
As it stands, panthor keeps a cached current frequency value for when it
wants to retrieve it. This doesn't work well for when things might
switch frequency without panthor's knowledge.
Instead, implement the get_cur_freq operation, and expose it through a
helper function to the rest of panthor.
Reviewed-by: Chia-I Wu <olvaffe@gmail.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Karunika Choo <karunika.choo@arm.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Link: https://patch.msgid.link/20251017-mt8196-gpufreq-v8-3-98fc1cc566a1@collabora.com Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
The Mali-based GPU on the MediaTek MT8196 SoC uses a separate MCU to
control the power and frequency of the GPU. This is modelled as a power
domain and clock provider.
It lets us omit the OPP tables from the device tree, as those can now be
enumerated at runtime from the MCU.
Add the necessary schema logic to handle what this SoC expects in terms
of clocks and power-domains.
Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Link: https://patch.msgid.link/20251017-mt8196-gpufreq-v8-1-98fc1cc566a1@collabora.com Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Marek Vasut [Sun, 2 Nov 2025 16:09:06 +0000 (17:09 +0100)]
dt-bindings: gpu: mali-valhall-csf: Document i.MX95 support
The instance of the GPU populated in Freescale i.MX95 is the
Mali G310, document support for this variant.
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Marek Vasut <marek.vasut@mailbox.org> Link: https://patch.msgid.link/20251102160927.45157-1-marek.vasut@mailbox.org Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Rain Yang [Wed, 22 Oct 2025 09:26:04 +0000 (17:26 +0800)]
drm/panthor: attach the driver's multiple power domains
Some platforms, such as i.MX95, utilize multiple power domains that need
to be attached explicitly. This patch ensures that the driver properly
attaches all available power domains using devm_pm_domain_attach_list().
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com> Suggested-by: Steven Price <steven.price@arm.com> Signed-off-by: Prabhu Sundararaj <prabhu.sundararaj@nxp.com> Signed-off-by: Rain Yang <jiyu.yang@nxp.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Link: https://patch.msgid.link/20251022092604.181752-1-jiyu.yang@oss.nxp.com Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Boris Brezillon [Fri, 31 Oct 2025 15:48:15 +0000 (16:48 +0100)]
drm/panthor: Fix UAF on kernel BO VA nodes
If the MMU is down, panthor_vm_unmap_range() might return an error.
We expect the page table to be updated still, and if the MMU is blocked,
the rest of the GPU should be blocked too, so no risk of accessing
physical memory returned to the system (which the current code doesn't
cover for anyway).
Proceed with the rest of the cleanup instead of bailing out and leaving
the va_node inserted in the drm_mm, which leads to UAF when other
adjacent nodes are removed from the drm_mm tree.
Ketil Johnsen [Wed, 22 Oct 2025 10:32:41 +0000 (12:32 +0200)]
drm/panthor: Fix race with suspend during unplug
There is a race between panthor_device_unplug() and
panthor_device_suspend() which can lead to IRQ handlers running on a
powered down GPU. This is how it can happen:
- unplug routine calls drm_dev_unplug()
- panthor_device_suspend() can now execute, and will skip a lot of
important work because the device is currently marked as unplugged.
- IRQs will remain active in this case and IRQ handlers can therefore
try to access a powered down GPU.
The fix is simply to take the PM ref in panthor_device_unplug() a
little bit earlier, before drm_dev_unplug().
Signed-off-by: Ketil Johnsen <ketil.johnsen@arm.com> Fixes: 5fe909cae118a ("drm/panthor: Add the device logical block") Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patch.msgid.link/20251022103242.1083311-1-ketil.johnsen@arm.com Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Ketil Johnsen [Wed, 29 Oct 2025 11:14:10 +0000 (12:14 +0100)]
drm/panthor: disable async work during unplug
A previous change, "drm/panthor: Fix UAF race between device unplug and
FW event processing", fixes a real issue where new work was unexpectedly
queued after cancellation. This was fixed by a disable instead.
Apply the same disable logic to other device level async work on device
unplug as a precaution.
Ketil Johnsen [Mon, 27 Oct 2025 14:02:15 +0000 (15:02 +0100)]
drm/panthor: Fix UAF race between device unplug and FW event processing
The function panthor_fw_unplug() will free the FW memory sections.
The problem is that there could still be pending FW events which are yet
not handled at this point. process_fw_events_work() can in this case try
to access said freed memory.
Simply call disable_work_sync() to both drain and prevent future
invocation of process_fw_events_work().
Boris Brezillon [Fri, 31 Oct 2025 16:03:18 +0000 (17:03 +0100)]
drm/panthor: Fix group_free_queue() for partially initialized queues
group_free_queue() can be called on a partially initialized queue
object if something fails in group_create_queue(). Make sure we don't
call drm_sched_entity_destroy() on an entity that hasn't been
initialized.
Boris Brezillon [Fri, 31 Oct 2025 16:03:17 +0000 (17:03 +0100)]
drm/panthor: Handle errors returned by drm_sched_entity_init()
In practice it's not going to fail because we're passing the current
sanity checks done by drm_sched_entity_init(), and that's the only
reason it would return an error, but better safe than sorry.
Jani Nikula [Mon, 3 Nov 2025 09:22:38 +0000 (11:22 +0200)]
drm/renesas: include drm_print.h where needed
rzg2l_du_drv.c depends on drm_print.h being indirectly included via
drm_buddy.h, drm_mm.h, or ttm/ttm_resource.h. Include drm_print.h
explicitly.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Closes: https://lore.kernel.org/r/20251103112418.031b3f8c@canb.auug.org.au Fixes: f6e8dc9edf96 ("drm: include drm_print.h where needed") Cc: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patch.msgid.link/04f617d5fe37f92d750efbb73065df3997f5c6b5.1762161597.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Add a new warning to ensure an understandable message is logged in such
cases. Use the same message and warning message already in place in
drm_bridge_add().
Luca Ceresoli [Tue, 28 Oct 2025 10:15:45 +0000 (11:15 +0100)]
drm/bridge: add warning for bridges attached without being added
DRM bridges must be added before they are attached. Add a warning to catch
violations.
The warning is based on the bridge not being part of any list, so it will
trigger if the bridge is being attached without ever having been added.
It won't catch cases of bridges attached after having been added and then
removed, because in that case the bridge will be in
bridge_lingering_list. However such a case is both more demanding to detect
and less likely to happen, so it can be left unchecked, at least for now.
Luca Ceresoli [Fri, 17 Oct 2025 16:15:06 +0000 (18:15 +0200)]
drm/display: bridge_connector: get/put the panel_bridge
The panel_bridge pointer is taken inside the loop and used after the
loop. Being a local variable, use a cleanup action to ensure it is put on
return.
Based on the code structure the panel_bridge pointer might be assigned
during multiple loop iterations. Even though this is probably not possible
in the practice, ensure there is no reference leak by putting the reference
to the old value before overwriting with the new value.
Luca Ceresoli [Fri, 17 Oct 2025 16:15:05 +0000 (18:15 +0200)]
drm/display: bridge_connector: get/put the stored bridges
drm_bridge_connector_init() takes eight pointers to various bridges, some
of which can be identical, and stores them in pointers inside struct
drm_bridge_connector. Get a reference to each of the taken bridges and put
it on cleanup.
Achieve this by adding a drmm cleanup callback whic puts all the non-NULL
bridges. Using drmm ensures the cleanup happens on drm_device teardown,
whichever is the return value of this function.
Four of these pointers (edid, hpd, detect and modes) can be written
multiple times (up to once per loop iterations), in order to eventually
store the last matching bridge. So when one of those pointers is
overwritten, we need to put the reference that we got during the previous
assignment. Add a drm_bridge_put() before writing them to handle this.
The commit being reverted moved all the bridge_connector->bridge_*
assignments to just before the final successful return in order to handle
the bridge refcounting in a clean way.
This introduced a bug, because a bit before the successful return
drmm_connector_hdmi_cec_register() is called, which calls funcs->init()
which is drm_bridge_connector_hdmi_cec_init() which needs
bridge_connector->bridge_hdmi_cec to be set.
The reported bug may be fixed in a relatively simple way, but other similar
patterns are potentially present, so just revert the offending commit. A
different approach will be implemented.
With manual tests, I can see that when I enable the CRTC, I get a page
flip event with a timestamp of 0. Tracking this down led to
drm_reset_vblank_timestamp() which does "t_vblank = 0" if
"high-precision query" is not available.
TI DSS does not have any hardware timestamping, and thus the default
ktime_get() is used in the DRM framework to get the vblank timestamp,
and ktime_get() is not "high precision" here.
It is not quite clear why the framework behaves this way, but I assume
the idea is that drm_crtc_vblank_on(), which calls
drm_reset_vblank_timestamp(), can be called at any time, and thus
ktime_get() wouldn't give a good timestamp. And, the idea is that the
driver would wait until next vblank after the CRTC enable, and then we
could get a good timestamp. This is hinted in the comment: "reinitialize
delayed at next vblank interrupt and assign 0 for now".
I think that makes sense. However, when we enable the CRTC in TI DSS,
i.e. we write the enable bit to the hardware, that's the exact moment
when the "vblank cycle" starts. It is the zero point in the cycle, and
thus ktime_get() would give a good timestamp.
I am not sure if this is applicable to other hardware, and if so, how
should it be solved in the framework. So, let's fix this in the tidss
driver at least for now.
This patch updates the vblank->time manually to ktime_get() just before
sending the vblank event, and we enable the crtc just before calling
ktime_get(). To get even more exact timing, the dispc_vp_enable() is
moved inside the event_lock spinlock.
With this, we get a proper timestamp for the page flip event from
enabling the CRTC, and Weston is happy.
Tomi Valkeinen [Fri, 5 Sep 2025 13:58:06 +0000 (16:58 +0300)]
drm/tidss: Restructure dispc_vp_prepare() and dispc_vp_enable()
tidss_crtc.c calls dispc_vp_prepare() and dispc_vp_enable() in that
order, next to each other. dispc_vp_prepare() does preparations for
enabling the crtc, by writing some registers, and dispc_vp_enable() does
more preparations. As the last thing, dispc_vp_enable() enables the CRTC
by writing the enable bit.
There might have been a reason at some point in the history for this
split, but I can't find any point to it. They also do a bit of
overlapping work: both call dispc_vp_find_bus_fmt(). They could as well
be a single function.
But instead of combining them, this patch moves everything from
dispc_vp_enable() to dispc_vp_prepare(), except the actual CRTC enable
bit write. The reason for this is that unlike all the preparatory
register writes, CRTC enable has an immediate effect, starting the
timing generator and the CRTC as a whole. Thus it may be important to
time the enable just right (as we do in the next patch).
Philipp Stanner [Thu, 23 Oct 2025 12:34:30 +0000 (14:34 +0200)]
drm/sched: Add warning for removing hack in drm_sched_fini()
The assembled developers agreed at the X.Org Developers Conference 2025
that the hack added for amdgpu in drm_sched_fini() shall be removed. It
shouldn't be needed by amdgpu anymore.
As it's unclear whether all drivers really follow the life time rule of
entities having to be torn down before their scheduler, it is reasonable
to warn for a while before removing the hack.
Add a warning in drm_sched_fini() that fires if an entity is still
active.
drm/imagination: Fix reference to devm_platform_get_and_ioremap_resource()
The call to devm_platform_ioremap_resource() was replaced by a call to
devm_platform_get_and_ioremap_resource(), but the comment referring to
the function's possible returned error codes was not updated.
Langyan Ye [Fri, 31 Oct 2025 10:04:47 +0000 (18:04 +0800)]
drm/panel: ilitek-ili9882t: Add support for Ilitek IL79900A-based panels
The Ilitek IL79900A display controller is similar to the ILI9882T and can
be supported within the existing `panel-ilitek-ili9882t.c` driver.
This patch extends the ILI9882T driver to handle IL79900A-based panels,
such as the Tianma TL121BVMS07-00. The IL79900A uses a similar command
sequence and initialization flow, with minor differences in power supply
configuration and timing.
Philipp Stanner [Tue, 28 Oct 2025 13:46:01 +0000 (14:46 +0100)]
drm/sched: Fix comment in drm_sched_run_job_work()
drm_sched_run_job_work() contains a comment which explains that an
entity being NULL means that there is no more work to do. It can,
however, also mean that there is work, but the scheduler doesn't have
enough credits to process the jobs right now.
Tvrtko Ursulin [Mon, 20 Oct 2025 11:54:11 +0000 (12:54 +0100)]
drm/ttm: Add an allocation flag to propagate -ENOSPC on OOM
Some graphics APIs differentiate between out-of-graphics-memory and
out-of-host-memory (system memory). Add a device init flag to have -ENOSPC
propagated from the resource managers instead of being converted to
-ENOMEM, to aid driver stacks in determining what error code to return or
whether corrective action can be taken at the driver level.
Co-developed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Christian König <christian.koenig@amd.com> Cc: Matthew Brost <matthew.brost@intel.com> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20251020115411.36818-7-tvrtko.ursulin@igalia.com
Tvrtko Ursulin [Mon, 20 Oct 2025 11:54:10 +0000 (12:54 +0100)]
drm/amdgpu: Configure max beneficial TTM pool allocation order
Let the TTM pool allocator know that we can afford for it to expend less
effort for satisfying contiguous allocations larger than 2MiB. The latter
is the maximum relevant PTE entry size and the driver and hardware are
happy to get larger blocks only opportunistically.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Christian König <christian.koenig@amd.com> Cc: Thadeu Lima de Souza Cascardo <cascardo@igalia.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20251020115411.36818-6-tvrtko.ursulin@igalia.com
Tvrtko Ursulin [Mon, 20 Oct 2025 11:54:09 +0000 (12:54 +0100)]
drm/ttm: Allow drivers to specify maximum beneficial TTM pool size
GPUs typically benefit from contiguous memory via reduced TLB pressure and
improved caching performance, where the maximum size of contiguous block
which adds a performance benefit is related to hardware design.
TTM pool allocator by default tries (hard) to allocate up to the system
MAX_PAGE_ORDER blocks. This varies by the CPU platform and can also be
configured via Kconfig.
If that limit was set to be higher than the GPU can make an extra use of,
lets allow the individual drivers to let TTM know over which allocation
order can the pool allocator afford to make a little bit less effort with.
We implement this by disabling direct reclaim for those allocations, which
reduces the allocation latency and lowers the demands on the page
allocator, in cases where expending this effort is not critical for the
GPU in question.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Cc: Christian König <christian.koenig@amd.com> Cc: Thadeu Lima de Souza Cascardo <cascardo@igalia.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20251020115411.36818-5-tvrtko.ursulin@igalia.com
Tvrtko Ursulin [Mon, 20 Oct 2025 11:54:08 +0000 (12:54 +0100)]
drm/ttm: Replace multiple booleans with flags in device init
Multiple consecutive boolean function arguments are usually not very
readable.
Replace the ones in ttm_device_init() with flags with the additional
benefit of soon being able to pass in more data with just a one off
code base churning cost.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Christian König <christian.koenig@amd.com> Cc: Danilo Krummrich <dakr@kernel.org> Cc: Dave Airlie <airlied@redhat.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Lyude Paul <lyude@redhat.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Sui Jingfeng <suijingfeng@loongson.cn> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Zack Rusin <zack.rusin@broadcom.com> Acked-by: Christian König <christian.koenig@amd.com> Acked-by: Zack Rusin <zack.rusin@broadcom.com> Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> # For xe Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20251020115411.36818-4-tvrtko.ursulin@igalia.com
[tursulin: fixup checkpatch while applying]
Tvrtko Ursulin [Mon, 20 Oct 2025 11:54:07 +0000 (12:54 +0100)]
drm/ttm: Replace multiple booleans with flags in pool init
Multiple consecutive boolean function arguments are usually not very
readable.
Replace the ones in ttm_pool_init() with flags with the additional
benefit of soon being able to pass in more data with just this one
code base churning cost.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Christian König <christian.koenig@amd.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20251020115411.36818-3-tvrtko.ursulin@igalia.com
Tvrtko Ursulin [Mon, 20 Oct 2025 11:54:06 +0000 (12:54 +0100)]
drm/ttm: Add getter for some pool properties
No functional change but to allow easier refactoring in the future.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Cc: Christian König <christian.koenig@amd.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20251020115411.36818-2-tvrtko.ursulin@igalia.com
Jani Nikula [Wed, 29 Oct 2025 10:39:45 +0000 (12:39 +0200)]
drm: include drm_print.h where needed
There are a gazillion files that depend on drm_print.h being indirectly
included via drm_buddy.h, drm_mm.h, or ttm/ttm_resource.h. In
preparation for removing those includes, explicitly include drm_print.h
where needed.
Lizhi Hou [Wed, 29 Oct 2025 19:34:23 +0000 (12:34 -0700)]
accel/amdxdna: Fix incorrect command state for timed out job
When a command times out, mark it as ERT_CMD_STATE_TIMEOUT. Any other
commands that are canceled due to this timeout should be marked as
ERT_CMD_STATE_ABORT.
drm/client: Create client buffers with drm_client_buffer_create_dumb()
Rename drm_client_framebuffer_create() to drm_client_buffer_create_dump()
and adapt callers. The new name reflects the function's purpose. Using
dumb buffers is the easiest way for creating a GEM buffer in a drivers-
independent way.
There's also drm_client_buffer_create(), which creates the client buffer
from a preexisting buffer object. This helper can be exported for drivers
that create their own GEM buffer object.
Release client buffers with drm_client_buffer_delete() instead of
drm_client_framebuffer_delete(). The latter is just a tiny wrapper
around the former.
Move the test for !buffer into drm_client_buffer_delete(), although
all callers appear to always have a valid pointer.
v2:
- test for !buffer before deref-ing pointer (Jocelyn, Dan)
The client buffer's framebuffer holds a reference and pointer on
each of its GEM buffer objects. Thus the field gem in the client-
buffer struct is not necessary. Deprecated the field and convert
the client-buffer helpers to use the framebuffer's objects.
In drm_client_buffer_delete(), do a possible vunmap before releasing
the framebuffer. Otherwise we'd eventually release the framebuffer
before unmaping its buffer objects.
drm/client: Inline drm_client_buffer_addfb() and _rmfb()
Creating and deleting a client buffer always creates and deletes
the underlying DRM framebuffer. Inline the helper functions into
their callers.
With the _addfb code being inlined into drm_client_buffer_create(),
clean up the function's error rollback to release the framebuffer's
handle and GEM buffer object as needed.
Move the _rmfb code into drm_client_buffer_delete() rather than its
current location in drm_client_framebuffer_delete(). The former is
now the inverse of drm_client_buffer_create(). Makes no difference
for cleaning up. Also prepares for the removal of
drm_client_framebuffer_delete().
drm/client: Move dumb-buffer handling to drm_client_framebuffer_create()
Dumb-buffer creation within the client code is asymetrically balanced
across drm_client_buffer_create() and drm_client_framebuffer_create().
Put all dumb-buffer code into drm_client_framebuffer_create() and leave
client-buffer initialization to drm_client_buffer_create(). Clarifies
responsibility between these functions.
Apart form the architectural improvements, drm_client_buffer_create()
can now be exported if needed by clients. The client will be able to
initialize buffers that have been created from other interfaces than
dumb buffers.
Karol Wachowski [Thu, 30 Oct 2025 09:17:00 +0000 (10:17 +0100)]
accel/ivpu: Wait for CDYN de-assertion during power down sequence
During power down, pending DVFS operations may still be in progress
when the NPU reset is asserted after CDYN=0 is set. Since the READY
bit may already be deasserted at this point, checking only the READY
bit is insufficient to ensure all transactions have completed.
Add an explicit check for CDYN de-assertion after the READY bit check
to guarantee no outstanding transactions remain before proceeding.
Fixes: 550f4dd2cedd ("accel/ivpu: Add support for Nova Lake's NPU") Reviewed-by: Maciej Falkowski <maciej.falkowski@linux.intel.com> Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com> Link: https://patch.msgid.link/20251030091700.293341-1-karol.wachowski@linux.intel.com
Johan Hovold [Wed, 24 Sep 2025 09:26:43 +0000 (11:26 +0200)]
drm/imx/parallel-display: drop unused module alias
The driver has never supported anything but OF probe so drop the unused
platform module alias incorrectly added by commit b2da05ff4797
("imx-drm: parallel-display: Add MODULE_ALIAS()")
Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20250924092643.26113-5-johan@kernel.org Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Johan Hovold [Wed, 24 Sep 2025 09:26:42 +0000 (11:26 +0200)]
drm/imx/tve: drop unused module alias
The driver has never supported anything but OF probe so drop the
unused platform module alias incorrectly added by commit 52db752c3de5
("imx-drm: imx-tve: Add MODULE_ALIAS()").
Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20250924092643.26113-4-johan@kernel.org Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Johan Hovold [Wed, 24 Sep 2025 09:26:41 +0000 (11:26 +0200)]
drm/imx/ldb: drop unused module alias
The driver has never supported anything but OF probe so drop the unused
platform module alias incorrectly added by commit bc627387a951
("imx-drm: imx-ldb: Add MODULE_ALIAS()").
Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20250924092643.26113-3-johan@kernel.org Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Johan Hovold [Wed, 24 Sep 2025 09:26:40 +0000 (11:26 +0200)]
drm/imx/dw-hdmi: drop unused module alias
The driver has never supported anything but OF probe so drop the unused
platform module alias which was incorrectly added by commit 3d1b35a3d9f3
("drm: imx: imx-hdmi: convert imx-hdmi to drm_bridge mode").
Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20250924092643.26113-2-johan@kernel.org Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Stephen Rothwell [Thu, 30 Oct 2025 08:28:28 +0000 (09:28 +0100)]
drm/panel: synaptics-tddi: fix build error by missing regulator/consumer.h include
Fix up for "backlight: Do not include <linux/fb.h> in header file"
interacting with [1] from the drm-misc tree.
[1] commit 3eae82503f4f ("drm: panel: add support for Synaptics TDDI series DSI panels")
Fixes: 3eae82503f4f ("drm: panel: add support for Synaptics TDDI series DSI panels") Closes: https://lore.kernel.org/all/20251030151428.3c1f11ea@canb.auug.org.au/ Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251030-topic-drm-fix-panel-synaptics-tddi-v1-1-206519d246e8@linaro.org
Enhance the probing sequence by using the ports property of the
display-subsystem node.
That done, it becomes possible to handle the display-substem node
outside of the soc node within the device-tree and not have each IP
blocks as children of the display-subsystem node.
Karol Wachowski [Wed, 29 Oct 2025 20:15:54 +0000 (21:15 +0100)]
accel/ivpu: Disallow setting sched mode OS starting from NPU6
OS scheduling mode gets deprecated starting from NPU6 onward.
Print warning and fallback to HW scheduling mode if OS mode is
explicitly selected with sched_mode parameter.
accel/ivpu: Add support for userptr buffer objects
Introduce a new ioctl `drm_ivpu_bo_create_from_userptr` that allows
users to create GEM buffer objects from user pointers to memory regions.
The user pointer must be page-aligned and the memory region must remain
valid for the buffer object's lifetime.
Userptr buffers enable direct use of mmapped files (e.g. inference
weights) in NPU workloads without copying data to NPU buffer objects.
This reduces memory usage and provides better flexibility for NPU
applications.
Fix 'Memory manager not clean during takedown' warning that occurs
when ivpu_gem_bo_free() removes the BO from the BOs list before it
gets unmapped. Then file_priv_unbind() triggers a warning in
drm_mm_takedown() during context teardown.
Protect the unmapping sequence with bo_list_lock to ensure the BO is
always fully unmapped when removed from the list. This ensures the BO
is either fully unmapped at context teardown time or present on the
list and unmapped by file_priv_unbind().
Fixes: 48aea7f2a2ef ("accel/ivpu: Fix locking in ivpu_bo_remove_all_bos_from_context()") Signed-off-by: Tomasz Rusinowicz <tomasz.rusinowicz@intel.com> Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com> Link: https://patch.msgid.link/20251029071451.184243-1-karol.wachowski@linux.intel.com
Marco Crivellari [Wed, 29 Oct 2025 16:56:42 +0000 (17:56 +0100)]
accel/ivpu: replace use of system_wq with system_percpu_wq
Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
system_wq should be the per-cpu workqueue, yet in this name nothing makes
that clear, so replace system_wq with system_percpu_wq.
The old wq (system_wq) will be kept for a few release cycles.
Marco Crivellari [Wed, 29 Oct 2025 16:56:41 +0000 (17:56 +0100)]
accel/ivpu: replace use of system_unbound_wq with system_dfl_wq
Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
system_unbound_wq should be the default workqueue so as not to enforce
locality constraints for random work whenever it's not required.
Adding system_dfl_wq to encourage its use when unbound work should be used.
The old system_unbound_wq will be kept for a few release cycles.
drm: panel: add support for Synaptics TDDI series DSI panels
Synaptics TDDI (Touch/Display Integration) panels utilize a single chip
for display and touch controllers. Implement a simple device driver for
such panels, along with its built-in LED backlight controller, and add
support for TD4101 and TD4300 panels in the driver.
Document the Synaptics TDDI (Touch/Display Integration) panel hardware.
Along with the MIPI-DSI panel, these devices also have an in-built LED
backlight device and a touchscreen, all packed together in a single chip.
Also, add compatibles for supported panels - TD4101 and TD4300. Both
have the '-panel' suffix so as to remove any ambiguity between the panel
and touchscreen chips.
Marek Vasut [Wed, 29 Oct 2025 20:04:48 +0000 (21:04 +0100)]
dt-bindings: display: bridge: renesas,dsi-csi2-tx: Align panel example with ili9881c binding
Update the panel example in this DT schema to match requirements in binding
display/panel/ilitek,ili9881c.yaml . This fixes the following schema check
warnings:
"
/tmp/dtx/Documentation/devicetree/bindings/display/bridge/renesas,dsi-csi2-tx.example.dtb: panel@0 (raspberrypi,dsi-7inch): compatible: ['raspberrypi,dsi-7inch'] is too short
from schema $id: http://devicetree.org/schemas/display/panel/ilitek,ili9881c.yaml
/tmp/dtx/Documentation/devicetree/bindings/display/bridge/renesas,dsi-csi2-tx.example.dtb: panel@0 (raspberrypi,dsi-7inch): 'power-supply' is a required property
from schema $id: http://devicetree.org/schemas/display/panel/ilitek,ili9881c.yaml
"
Fixes: c376a6943741 ("dt-bindings: display: bridge: renesas,dsi-csi2-tx: Allow panel@ subnode") Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251029200519.214548-1-marek.vasut+renesas@mailbox.org
The Samsung ATNA40CT06 panel is a 16" AMOLED eDP panel. It is similar to
the ATNA33XC20 except that it is larger and has a different resolution.
It is found on Qualcomm Glymur CRD platform.
David Heidelberg [Thu, 23 Oct 2025 20:24:26 +0000 (22:24 +0200)]
drm/panel: Add Samsung S6E3FC2X01 DDIC with AMS641RW panel
Add panel driver used in the OnePlus 6T.
No datasheet, based mostly on EDK2 init sequence and the downstream driver.
Note: This driver doesn't use previously mentioned "samsung,s6e3fc2x01"
by OnePlus 6T device-tree.
The reason is because DDIC itself without knowing the panel type used
with it will not give the driver enough information about the panel used,
as the panel cannot be autodetected.
While would be more practical to support the original compatible,
I would like to avoid it, to prevent confusing devs upstreaming DDICs.
Based on work of:
Casey Connolly <casey@connolly.tech>
Joel Selvaraj <foss@joelselvaraj.com>
Nia Espera <a5b6@riseup.net>
Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Jessica Zhang <jesszhan0024@gmail.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20251023-s6e3fc2x01-v5-2-8f8852e67417@ixit.cz
David Heidelberg [Thu, 23 Oct 2025 20:24:25 +0000 (22:24 +0200)]
dt-bindings: panel: Add Samsung S6E3FC2X01 DDIC with panel
Basic description for S6E3FC2X01 DDIC with attached panel AMS641RW.
Samsung AMS641RW is 6.41 inch, 1080x2340 pixels, 19.5:9 ratio panel
This panel has three supplies, while panel-simple-dsi is limited to one.
There is no user of this compatible, nor the compatible make sense.
Remove it from simple DSI panel definitions.
Priit Laes [Thu, 19 Jun 2025 13:22:09 +0000 (16:22 +0300)]
drm/panel: nv3052c: Reduce duplication of init sequences
Although there are various small changes between the init
sequences, the second half is common for all 3 currently
supported displays.
Note that this is only compile-tested.
Signed-off-by: Priit Laes <plaes@plaes.org> Tested-by: John Watts <contact@jookia.org> Reviewed-by: John Watts <contact@jookia.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20250619132211.556027-1-plaes@plaes.org
pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(),
pm_runtime_autosuspend() and pm_request_autosuspend() now include a call
to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to
pm_runtime_mark_last_busy().
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> Reviewed-by: Maciej Falkowski <maciej.falkowski@linux.intel.com> Reviewed-by: Karol Wachowski <karol.wachowski@linux.intel.com> Signed-off-by: Maciej Falkowski <maciej.falkowski@linux.intel.com> Link: https://patch.msgid.link/20251027133956.393375-1-sakari.ailus@linux.intel.com
Maciej Falkowski [Mon, 27 Oct 2025 15:09:32 +0000 (16:09 +0100)]
accel/ivpu: Remove skip of dma unmap for imported buffers
Rework of imported buffers introduced in the commit e0c0891cd63b ("accel/ivpu: Rework bind/unbind of imported buffers")
switched the logic of imported buffers by dma mapping/unmapping
them just as the regular buffers.
The commit didn't include removal of skipping dma unmap of imported
buffers which results in them being mapped without unmapping.
Fixes: e0c0891cd63b ("accel/ivpu: Rework bind/unbind of imported buffers") Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Reviewed-by: Karol Wachowski <karol.wachowski@linux.intel.com> Signed-off-by: Maciej Falkowski <maciej.falkowski@linux.intel.com> Link: https://patch.msgid.link/20251027150933.2384538-1-maciej.falkowski@linux.intel.com
Marek Vasut [Tue, 28 Oct 2025 23:28:20 +0000 (00:28 +0100)]
drm/rcar-du: dsi: Convert register bits to BIT() macro
Convert register bits to BIT() macro where applicable. This is done
automatically using regex 's@(1 << \([0-9]\+\))@BIT(\1)', except for
bitfields which are manually updated to use GENMASK().
Marek Vasut [Tue, 28 Oct 2025 23:28:19 +0000 (00:28 +0100)]
drm/rcar-du: dsi: Clean up handling of DRM mode flags
Introduce TXVMVPRMSET0R_BPP_MASK macro and use FIELD_PREP() to generate
appropriate bitfield from mask and value without bitshift, assign this
value into vprmset0r. Remove TXVMVPRMSET0R_CSPC_RGB which is never used,
replace it with code comment next to TXVMVPRMSET0R_CSPC_YCbCr.
Replace (mode->flags & DRM_MODE_FLAG_P.SYNC) test with inverted conditional
(mode->flags & DRM_MODE_FLAG_N.SYNC) and bitwise orr vprmset0r with either
or both TXVMVPRMSET0R_HSPOL_LOW and TXVMVPRMSET0R_VSPOL_LOW if conditional
matches.
Do not convert bits and bitfields to BIT() and GENMASK() yet, to be
consisten with the current style. Conversion to BIT() and GENMASK()
macros is done at the very end of this series in the last two patches.
Marek Vasut [Tue, 28 Oct 2025 23:28:18 +0000 (00:28 +0100)]
drm/rcar-du: dsi: Respect DSI mode flags
Cache DSI mode flags in new mode_flags member of struct rcar_mipi_dsi .
Configure TXVMSETR register based on the content of DSI mode flags in
case the controller operates in video mode.
Rename TXVMSETR_H..BPEN_EN to TXVMSETR_H..BPEN and drop TXVMSETR_H..BPEN_DIS
which resolves to 0. Update TXVMSETR_VSEN in the same manner. Replace
TXVMSETR_SYNSEQ_PULSES with a code comment next to TXVMSETR_SYNSEQ_EVENTS
because TXVMSETR_SYNSEQ_PULSES resolves to 0.
Do not convert bits and bitfields to BIT() and GENMASK() yet, to be
consisten with the current style. Conversion to BIT() and GENMASK()
macros is done at the very end of this series in the last two patches.
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Link: https://patch.msgid.link/20251028232959.109936-9-marek.vasut+renesas@mailbox.org Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Marek Vasut [Tue, 28 Oct 2025 23:28:17 +0000 (00:28 +0100)]
drm/rcar-du: dsi: Clean up TXVMPSPHSETR DT macros
Introduce TXVMPSPHSETR_DT_MASK macro and use FIELD_PREP() to generate
appropriate bitfield from mask and value without bitshift.
Do not convert bits and bitfields to BIT() and GENMASK() yet, to be
consisten with the current style. Conversion to BIT() and GENMASK()
macros is done at the very end of this series in the last two patches.
Marek Vasut [Tue, 28 Oct 2025 23:28:16 +0000 (00:28 +0100)]
drm/rcar-du: dsi: Clean up CLOCKSET1 CLKINSEL macros
Introduce CLOCKSET1_CLKINSEL_MASK macro and remove bitshift from
values to make this bitfield usable with FIELD_PREP(). There are
no users of this bitfield, hence no updates to the DSI driver.
Do not convert bits and bitfields to BIT() and GENMASK() yet, to be
consisten with the current style. Conversion to BIT() and GENMASK()
macros is done at the very end of this series in the last two patches.
Marek Vasut [Tue, 28 Oct 2025 23:28:15 +0000 (00:28 +0100)]
drm/rcar-du: dsi: Clean up VCLKSET register macros
Introduce VCLKSET_BPP_MASK macro and use FIELD_PREP() to generate
appropriate bitfield from mask and value without bitshift. Remove
VCLKSET_COLOR_RGB which is never used, replace it with code comment.
Do not convert bits and bitfields to BIT() and GENMASK() yet, to be
consisten with the current style. Conversion to BIT() and GENMASK()
macros is done at the very end of this series in the last two patches.
Marek Vasut [Tue, 28 Oct 2025 23:28:13 +0000 (00:28 +0100)]
drm/rcar-du: dsi: Document PHTR TESTDOUT as bitfield
The register PHTR bitfield TESTDOUT is not a single bit, but a
bitfield. Add a MASK macro and a _TEST bitfield value, which is
used by the driver to poll for completion. No functional change.
Marek Vasut [Tue, 28 Oct 2025 23:28:12 +0000 (00:28 +0100)]
drm/rcar-du: dsi: Document TXVMSETR PIXWDTH as bitfield
The register TXVMSETR bitfield PIXWDTH is not a single bit, but a
bitfield. Add a MASK macro and document that the only allowed value
that can ever be written into the bitfield is the current value, 1.
No functional change.
Marek Vasut [Tue, 28 Oct 2025 23:28:11 +0000 (00:28 +0100)]
drm/rcar-du: dsi: Fix missing parameter in RXSETR_...EN macros
The RXSETR_CRCEN(n) and RXSETR_ECCEN(n) macros both take parameter (n),
add the missing macro parameter. Neither of those macros is used by the
driver, so for now the bug is harmless.
Fixes: 685e8dae19df ("drm/rcar-du: dsi: Implement DSI command support") Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reported-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Link: https://patch.msgid.link/20251028232959.109936-2-marek.vasut+renesas@mailbox.org Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Ville Syrjälä [Fri, 17 Oct 2025 16:33:27 +0000 (19:33 +0300)]
drm/atomic: WARN about invalid drm_foo_get_state() usage
drm_{crtc,plane,connector,private_obj}_get_state() must not
be called after the atomic check phase. At that point the commit
has been carved in stone and no new objects must be introduced
into it. WARN if anyone attempts to violate this rule.
Ville Syrjälä [Fri, 17 Oct 2025 16:33:26 +0000 (19:33 +0300)]
drm/atomic: WARN about missing acquire_ctx in drm_atomic_get_private_obj_state()
The crtc/plane/connector counterparts of
drm_atomic_get_private_obj_state() all WARN about a missing
acquire_ctx. Do the same in drm_atomic_get_private_obj_state()
for consistency.
Icenowy Zheng [Mon, 20 Oct 2025 05:35:23 +0000 (13:35 +0800)]
drm/ttm: add pgprot handling for RISC-V
The RISC-V Svpbmt privileged extension provides support for overriding
page memory coherency attributes, and, along with vendor extensions like
Xtheadmae, supports pgprot_{writecombine,noncached} on RISC-V.
Adapt the codepath that maps ttm_write_combined to pgprot_writecombine
and ttm_noncached to pgprot_noncached to RISC-V, to allow proper page
access attributes.
Signed-off-by: Icenowy Zheng <uwu@icenowy.me> Tested-by: Han Gao <rabenda.cn@gmail.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20251020053523.731353-1-uwu@icenowy.me
Troy Hanson [Wed, 22 Oct 2025 14:16:06 +0000 (16:16 +0200)]
accel/qaic: Rename constant for clarity
QAIC_MANAGE_EXT_MSG_LENGTH is ambiguous and has been confused with
QAIC_MANAGE_MAX_MSG_LENGTH. Rename it to clarify it's a wire length.
Signed-off-by: Troy Hanson <thanson@qti.qualcomm.com> Signed-off-by: Youssef Samir <youssef.abdulrahman@oss.qualcomm.com> Reviewed-by: Carl Vanderlip <carl.vanderlip@oss.qualcomm.com> Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
[jhugo: capitalize subject] Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Link: https://patch.msgid.link/20251022141606.3740470-1-youssef.abdulrahman@oss.qualcomm.com
Aswin Venkatesan [Wed, 22 Oct 2025 12:41:07 +0000 (14:41 +0200)]
accel/qaic: Fix comment
Replace the word "Qranium" with "qaic" in the function parameter
description.
Signed-off-by: Aswin Venkatesan <aswivenk@qti.qualcomm.com> Signed-off-by: Youssef Samir <youssef.abdulrahman@oss.qualcomm.com> Reviewed-by: Carl Vanderlip <carl.vanderlip@oss.qualcomm.com> Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
[jhugo: adjust word wrapping in commit text] Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Link: https://patch.msgid.link/20251022124107.3712466-1-youssef.abdulrahman@oss.qualcomm.com
Youssef Samir [Fri, 17 Oct 2025 17:34:32 +0000 (19:34 +0200)]
accel/qaic: Update the sahara image table for AIC200
Update the Sahara image table for the AIC200 to add entries for:
- qupv3fw.elf at id 54
- xbl_config.elf at id 38
- tz_qti_config.mbn at id 76
And move pvs.bin to id 78 to avoid firmware conflict.
Co-developed-by: Zack McKevitt <zmckevit@qti.qualcomm.com> Signed-off-by: Zack McKevitt <zmckevit@qti.qualcomm.com> Co-developed-by: Aswin Venkatesan <aswivenk@qti.qualcomm.com> Signed-off-by: Aswin Venkatesan <aswivenk@qti.qualcomm.com> Signed-off-by: Youssef Samir <quic_yabdulra@quicinc.com> Signed-off-by: Youssef Samir <youssef.abdulrahman@oss.qualcomm.com> Reviewed-by: Karol Wachowski <karol.wachowski@linux.intel.com> Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Link: https://patch.msgid.link/20251017173432.1207656-1-youssef.abdulrahman@oss.qualcomm.com
Philipp Stanner [Fri, 24 Oct 2025 08:15:00 +0000 (10:15 +0200)]
MAINTAINERS: Maintain spsc_queue through drm_sched
Back in the day a specialized lockless queue was designed solely for the
DRM GPU Scheduler: spsc_queue. This queue's only user is drm_sched, and
there is no dedicated maintainer entry for the queue.
Add the spsc_queue header to the DRM GPU Scheduler MAINTAINERS' section.
Add a driver for Arm Ethos-U65/U85 NPUs. The Ethos-U NPU has a
relatively simple interface with single command stream to describe
buffers, operation settings, and network operations. It supports up to 8
memory regions (though no h/w bounds on a region). The Ethos NPUs
are designed to use an SRAM for scratch memory. Region 2 is reserved
for SRAM (like the downstream driver stack and compiler). Userspace
doesn't need access to the SRAM.
The h/w has no MMU nor external IOMMU and is a DMA engine which can
read and write anywhere in memory without h/w bounds checks. The user
submitted command streams must be validated against the bounds of the
GEM BOs. This is similar to the VC4 design which validates shaders.
The job submit is based on the rocket driver for the Rockchip NPU
utilizing the GPU scheduler. It is simpler as there's only 1 core rather
than 3.
Tested on i.MX93 platform (U65) and FVP (U85) with Mesa Teflon
support.
Add a binding schema for Arm Ethos-U65/U85 NPU. The Arm Ethos-U NPUs are
designed for edge AI inference applications.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Frank Li <Frank.Li@nxp.com> Acked-by: Tomeu Vizoso <tomeu@tomeuvizoso.net> Link: https://patch.msgid.link/20251020-ethos-v6-1-ecebc383c4b7@kernel.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Lizhi Hou [Fri, 24 Oct 2025 16:55:03 +0000 (09:55 -0700)]
accel/amdxdna: Fix uninitialized return value
In aie2_get_hwctx_status() and aie2_query_ctx_status_array(), the
functions could return an uninitialized value in some cases. Update them
to always return 0. The amount of valid results is indicated by the
returned buffer_size, element_size, and num_element fields.
Lizhi Hou [Fri, 24 Oct 2025 16:26:08 +0000 (09:26 -0700)]
accel/amdxdna: Fix incorrect return value in aie2_hwctx_sync_debug_bo()
When the driver issues the SYNC_DEBUG_BO command, it currently returns 0
even if the firmware fails to execute the command. Update the driver to
return -EINVAL in this case to properly indicate the failure.
Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/dri-devel/aPsadTBXunUSBByV@stanley.mountain/ Fixes: 7ea046838021 ("accel/amdxdna: Support firmware debug buffer") Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org> Signed-off-by: Lizhi Hou <lizhi.hou@amd.com> Link: https://patch.msgid.link/20251024162608.1544842-1-lizhi.hou@amd.com
atomic:
- Clean up and improve state-handling interfaces, update drivers
bridge:
- Improve ref counting
buddy:
- Optimize block management
Driver Changes:
amdxdna:
- Fix runtime power management
- Support firmware debug output
ast:
- Set quirks for each chip model
atmel-hlcdc:
- Set LCDC_ATTRE register in plane disable
- Set correct values for plane scaler
bochs:
- Use vblank timer
bridge:
- synopsis: Support CEC; Init timer with correct frequency
cirrus-qemu:
- Use vblank timer
imx:
- Clean up
ivu:
- Update JSM API to 3.33.0
- Reset engine on more job errors
- Return correct error codes for jobs
komeda:
- Use drm_ logging functions
panel:
- edp: Support AUO B116XAN02.0
panfrost:
- Embed struct drm_driver in Panfrost device
- Improve error handling
- Clean up job handling
panthor:
- Support custom ASN_HASH for mt8196
renesas:
- rz-du: Fix dependencies
rockchip:
- dsi: Add support for RK3368
- Fix LUT size for RK3386
sitronix:
- Fix output position when clearing screens
qaic:
- Support dma-buf exports
- Support new firmware's READ_DATA implementation
- Replace kcalloc with memdup
- Replace snprintf() with sysfs_emit()
- Avoid overflows in arithmetics
- Clean up
- Fixes
projects / thirdparty / kernel / linux.git / log
