drm/omapdrm: Implement fbdev emulation as in-kernel client

Move code from ad-hoc fbdev callbacks into DRM client functions
and remove the old callbacks. The functions instruct the client
to poll for changed output or restore the display. The DRM core
calls both, the old callbacks and the new client helpers, from
the same places. The new functions perform the same operation as
before, so there's no change in functionality.

Replace all code that initializes or releases fbdev emulation
throughout the driver. Instead initialize the fbdev client by a
single call to omapdrm_fbdev_setup() after omapdrm has registered
its DRM device. As in most drivers, omapdrm's fbdev emulation now
acts like a regular DRM client.

The fbdev client setup consists of the initial preparation and the
hot-plugging of the display. The latter creates the fbdev device
and sets up the fbdev framebuffer. The setup performs display
hot-plugging once. If no display can be detected, DRM probe helpers
re-run the detection on each hotplug event.

A call to drm_dev_unregister() releases the client automatically.
No further action is required within omapdrm. If the fbdev
framebuffer has been fully set up, struct fb_ops.fb_destroy
implements the release. For partially initialized emulation, the
fbdev client reverts the initial setup.

v2:
* init drm_client in this patch (Tomi)
* don't handle non-atomic modesetting (Tomi)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403104035.15288-6-tzimmermann@suse.de

drm/omapdrm: Remove fbdev from struct omap_drm_private

The DRM device stores a pointer to the fbdev helper. Remove struct
omap_drm_private.fbdev, which contains the same value. No functional
changes.

v2:
* don't clear dev->fb_helper unnecessarily (Tomi)
* include omap_fbdev.h in omap_fbdev.c (kernel test robot)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403104035.15288-5-tzimmermann@suse.de

drm/omapdrm: Remove bo from struct omap_fbdev

Fbdev's framebuffer stores a pointer to the GEM object. Remove
struct omap_fbdev.bo, which contains the same value. No functional
changes.

v2:
* fix commit message (Tomi)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403104035.15288-4-tzimmermann@suse.de

drm/omapdrm: Remove fb from struct omap_fbdev

Fbdev's struct fb_helper stores a pointer to the framebuffer. Remove
struct omap_fbdev.fb, which contains the same value. No functional
changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403104035.15288-3-tzimmermann@suse.de

drm/omapdrm: Include <linux/of.h>

Include <linux/of.h> to get the contained declarations. No functional
changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403104035.15288-2-tzimmermann@suse.de

drm/vkms: allow the primary plane to be positioned

Before commit bc0d7fdefec6 ("drm: vkms: Supports to the case where
primary plane doesn't match the CRTC"), the composition was executed
on top of the primary plane. Therefore, the primary plane needed to cover
the entire CRTC. After commit bc0d7fdefec6, this is no longer necessary,
as the composition is now executed on top of the CRTC.

Then, allow the primary plane to be positioned in such a way that it
doesn't cover the entire CRTC.

This patch was tested with the vkms IGT testlist and all tests passed
successfully. Moreover, the test
igt@kms_universal_plane@universal-plane-pageflip-windowed-pipe-A
used to fail and now is passing.

Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20230324164226.256084-3-mcanal@igalia.com

drm/vkms: remove the need for the primary plane to be visible

Before commit bc0d7fdefec6 ("drm: vkms: Supports to the case where
primary plane doesn't match the CRTC"), the composition was executed on
top of the primary plane. Therefore, the primary plane needed to be
visible and full screen. After commit bc0d7fdefec6, this is no longer
necessary, as the composition is now executed on top of the CRTC.

Then, remove the conditional expression that forced the primary plane to
be visible and full screen. This allows vkms to accept non-null
framebuffers when the CRTC is disabled.

This patch was tested with the vkms IGT testlist and all tests passed
successfully. Moreover, the tests
igt@kms_universal_plane@universal-plane-pipe-a-functional and
igt@kms_universal_plane@disable-primary-vs-flip-pipe-a used to fail and
now are passing.

Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20230324164226.256084-2-mcanal@igalia.com

drm/ttm: Make the call to ttm_tt_populate() interruptible when faulting

When swapping in, or under memory pressure ttm_tt_populate() may sleep
for a substantiable amount of time. Allow interrupts during the sleep.
This will also allow us to inject -EINTR errors during swapin in upcoming
patches.

Also avoid returning VM_FAULT_OOM, since that will confuse the core
mm, making it print out a confused message and retrying the fault.
Return VM_FAULT_SIGBUS also under OOM conditions.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404200650.11043-4-thomas.hellstrom@linux.intel.com

drm/ttm: Reduce the number of used allocation orders for TTM pages

When swapping out, we will split multi-order pages both in order to
move them to the swap-cache and to be able to return memory to the
swap cache as soon as possible on a page-by-page basis.
Reduce the page max order to the system PMD size, as we can then be nicer
to the system and avoid splitting gigantic pages.

Looking forward to when we might be able to swap out PMD size folios
without splitting, this will also be a benefit.

v2:
- Include all orders up to the PMD size (Christian König)
v3:
- Avoid compilation errors for architectures with special PFN_SHIFTs

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404200650.11043-3-thomas.hellstrom@linux.intel.com

drm/ttm/pool: Fix ttm_pool_alloc error path

When hitting an error, the error path forgot to unmap dma mappings and
could call set_pages_wb() on already uncached pages.

Fix this by introducing a common ttm_pool_free_range() function that
does the right thing.

v2:
- Simplify that common function (Christian König)
v3:
- Rename that common function to ttm_pool_free_range() (Christian König)

Fixes: d099fc8f540a ("drm/ttm: new TT backend allocation pool v3")
Cc: Christian König <christian.koenig@amd.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404200650.11043-2-thomas.hellstrom@linux.intel.com

MAINTAINERS: Add entry for QAIC driver

Add MAINTAINERS entry for the Qualcomm Cloud AI 100 driver.

Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-9-git-send-email-quic_jhugo@quicinc.com

accel/qaic: Add qaic driver to the build system

Now that we have all the components of a minimum QAIC which can boot and
run an AIC100 device, add the infrastructure that allows the QAIC driver
to be built.

Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-8-git-send-email-quic_jhugo@quicinc.com

accel/qaic: Add mhi_qaic_cntl

Some of the MHI channels for an AIC100 device need to be routed to
userspace so that userspace can communicate directly with QSM. The MHI
bus does not support this, and while the WWAN subsystem does (for the same
reasons), AIC100 is not a WWAN device. Also, MHI is not something that
other accelerators are expected to share, thus an accel subsystem function
that meets this usecase is unlikely.

Create a QAIC specific MHI userspace shim that exposes these channels.

Start with QAIC_SAHARA which is required to boot AIC100 and is consumed by
the kickstart application as documented in aic100.rst

Each AIC100 instance (currently, up to 16) in a system will create a
chardev for QAIC_SAHARA. This chardev will be found as
/dev/<mhi instance>_QAIC_SAHARA
For example - /dev/mhi0_QAIC_SAHARA

Signed-off-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-7-git-send-email-quic_jhugo@quicinc.com

accel/qaic: Add datapath

Add the datapath component that manages BOs and submits them to running
workloads on the qaic device via the dma_bridge hardware. This allows
QAIC clients to interact with their workloads (run inferences) via the
following ioctls along with mmap():

DRM_IOCTL_QAIC_CREATE_BO
DRM_IOCTL_QAIC_MMAP_BO
DRM_IOCTL_QAIC_ATTACH_SLICE_BO
DRM_IOCTL_QAIC_EXECUTE_BO
DRM_IOCTL_QAIC_PARTIAL_EXECUTE_BO
DRM_IOCTL_QAIC_WAIT_BO
DRM_IOCTL_QAIC_PERF_STATS_BO

Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-6-git-send-email-quic_jhugo@quicinc.com

accel/qaic: Add control path

Add the control path component that talks to the management processor (QSM)
to load workloads onto the AIC100 device. This implements the KMD portion
of the NNC protocol over the QAIC_CONTROL MHI channel and the
DRM_IOCTL_QAIC_MANAGE IOCTL to userspace. With this functionality, QAIC
clients are able to load, run, and cleanup their workloads on the device
but not interact with the workloads (run inferences).

Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-5-git-send-email-quic_jhugo@quicinc.com

accel/qaic: Add MHI controller

An AIC100 device contains a MHI interface with a number of different
channels for controlling different aspects of the device. The MHI
controller works with the MHI bus to enable and drive that interface.

AIC100 uses the BHI protocol in PBL to load SBL. The MHI controller
expects the SBL to be located at /lib/firmware/qcom/aic100/sbl.bin and
expects the MHI bus to manage the process of loading and sending SBL to
the device.

Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-4-git-send-email-quic_jhugo@quicinc.com

accel/qaic: Add uapi and core driver file

Add the QAIC driver uapi file and core driver file that binds to the PCIe
device. The core driver file also creates the accel device and manages
all the interconnections between the different parts of the driver.

The driver can be built as a module. If so, it will be called "qaic.ko".

Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-3-git-send-email-quic_jhugo@quicinc.com

accel/qaic: Add documentation for AIC100 accelerator driver

The Qualcomm Cloud AI 100 (AIC100) device is an Artificial Intelligence
accelerator PCIe card. It contains a number of components both in the
SoC and on the card which facilitate running workloads:

QSM: management processor
NSPs: workload compute units
DMA Bridge: dedicated data mover for the workloads
MHI: multiplexed communication channels
DDR: workload storage and memory

The Linux kernel driver for AIC100 is called "QAIC" and is located in the
accel subsystem.

Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-2-git-send-email-quic_jhugo@quicinc.com

drm/atomic-helper: Don't set deadline for modesets

If the crtc is being switched on or off then the semantics of
computing the timestampe of the next vblank is somewhat ill-defined.
And indeed, the code splats with a warning in the timestamp
computation code. Specifically it hits the check to make sure that
atomic drivers have full set up the timing constants in the drm_vblank
structure, and that's just not the case before the crtc is actually
on.

For robustness it seems best to just not set deadlines for modesets.

v2: Also skip on inactive crtc (Ville)

Link: https://lore.kernel.org/dri-devel/dfc21f18-7e1e-48f0-c05a-d659b9c90b91@linaro.org/
Fixes: d39e48ca80c0 ("drm/atomic-helper: Set fence deadline for vblank")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rob Clark <robdclark@chromium.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Reported-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # test patch only
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405133105.947834-1-daniel.vetter@ffwll.ch

drm/scdc-helper: Pimp SCDC debugs

Include the device and connector information in the SCDC
debugs. Makes it easier to figure out who did what.

v2: Rely on connector->ddc (Maxime)

Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Robert Foss <rfoss@kernel.org>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Emma Anholt <emma@anholt.net>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403223652.18848-1-ville.syrjala@linux.intel.com
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Acked-by: Thierry Reding <treding@nvidia.com>

drm/fb-helper: fix input validation gaps in check_var

Apparently drivers need to check all this stuff themselves, which for
most things makes sense I guess. And for everything else we luck out,
because modern distros stopped supporting any other fbdev drivers than
drm ones and I really don't want to argue anymore about who needs to
check stuff. Therefore fixing all this just for drm fbdev emulation is
good enough.

Note that var->active is not set or validated. This is just control
flow for fbmem.c and needs to be validated in there as needed.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404194038.472803-3-daniel.vetter@ffwll.ch

drm/fb-helper: drop redundant pixclock check from drm_fb_helper_set_par()

The fb_check_var hook is supposed to validate all this stuff. Any
errors from fb_set_par are considered driver/hw issues and resulting
in dmesg warnings.

Luckily we do fix up the pixclock already, so this is all fine.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404194038.472803-2-daniel.vetter@ffwll.ch

drm/fb-helper: set x/yres_virtual in drm_fb_helper_check_var

Drivers are supposed to fix this up if needed if they don't outright
reject it. Uncovered by 6c11df58fd1a ("fbmem: Check virtual screen
sizes in fb_set_var()").

Reported-by: syzbot+20dcf81733d43ddff661@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?id=c5faf983bfa4a607de530cd3bb008888bf06cefc
Cc: stable@vger.kernel.org # v5.4+
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404194038.472803-1-daniel.vetter@ffwll.ch

drm/bridge: ti-sn65dsi86: Allow GPIO operations to sleep

There is no need to require non-sleeping GPIO access. Silence the
WARN_ON() if GPIO is using e.g. I2C expanders.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405135127.769665-1-alexander.stein@ew.tq-group.com

drm/panel-edp: Add AUO NE135FBM-N41 v8.1 panel entry

Add a panel entry with delay_200_500_e50 for the AUO NE135FBM-N41
version 8.1, found on a number of ACER laptops, including the
Swift 3 (SF313-52, SF313-53), Chromebook Spin 513 (CP513-2H) and
others.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405100452.44225-1-angelogioacchino.delregno@collabora.com

drm/bridge: ps8640: Use constant sleep time for polling hpd

The default hpd_wait_us in panel_edp.c is 2 seconds. This makes the
sleep time in the polling of _ps8640_wait_hpd_asserted become 200ms.
Change it to a constant 20ms to speed up the function.

Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230331030204.1179524-1-treapking@chromium.org

drm/bridge: ti-sn65dsi83: Do not generate HFP/HBP/HSA and EOT packet

Do not generate the HS front and back porch gaps, the HSA gap and
EOT packet, as per "SN65DSI83 datasheet SLLSEC1I - SEPTEMBER 2012
- REVISED OCTOBER 2020", page 22, these packets are not required.
This makes the TI SN65DSI83 bridge work with Samsung DSIM on i.MX8MN.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403190242.224490-1-marex@denx.de

drm: bridge: ldb: add support for using channel 1 only

The LDB driver currently checks whether dual mode is used, otherwise it
assumes only channel 0 is in use. Add support for using only channel 1. In
device tree terms, this means linking port 2 only.

Doing this cleanly requires changing the logic of the probe functions from
this:

 1. use of_graph_get_remote_node() on port 1 to find the panel
 2. use drm_of_lvds_get_dual_link_pixel_order() to detect dual mode

to this:

 1. use of_graph_get_remote_node() twice to find remote ports
 2. reuse the result of the above to know whether each channel is enabled
    and to find the panel
 3. if (both channels as enabled)
        use drm_of_lvds_get_dual_link_pixel_order() to detect dual mode

Also add a dev_dbg() to log the detected mode and log an error in case no
panel was found (no channel enabled).

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405081058.2347130-2-luca.ceresoli@bootlin.com

drm: bridge: ldb: add missing \n in dev_warn() string

dev_warn() and similar require a training \n.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405081058.2347130-1-luca.ceresoli@bootlin.com

drm/bridge: ti-sn65dsi83: use dev_err_probe if host attach failed

There might be cases where the host attach is deferred, use dev_err_probe
to add more detailed information to /sys/kernel/debug/devices_deferred.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405075223.579461-1-alexander.stein@ew.tq-group.com

accel/ivpu: Remove D3hot delay for Meteorlake

VPU on MTL has hardware optimizations and does not require 10ms
D0 - D3hot transition delay imposed by PCI specification (PCIe
r6.0, sec 5.9.) .

The delay removal is traditionally done by adding PCI ID to
quirk_remove_d3hot_delay() in drivers/pci/quirks.c . But since
we do not need that optimization before driver probe and we
can better specify in the ivpu driver on what (future) hardware
use the optimization, we do not use quirk_remove_d3hot_delay()
for that.

Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403121545.2995279-1-stanislaw.gruszka@linux.intel.com

Revert "drm/lima: add usage counting method to ctx_mgr"

This reverts commit bccafec957a5c4b22ac29e53a39e82d0a0008348.

This is due to the depend commit has been reverted on upstream:
commit baad10973fdb ("Revert "drm/scheduler: track GPU active time per entity"")

Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404002601.24136-4-yq882255@163.com

Revert "drm/lima: allocate unique id per drm_file"

This reverts commit 87767de835edf527b879a363d518c33da68adb81.

This is due to the depend commit has been reverted on upstream:
commit baad10973fdb ("Revert "drm/scheduler: track GPU active time per entity"")

Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404002601.24136-3-yq882255@163.com

Revert "drm/lima: add show_fdinfo for drm usage stats"

This reverts commit 4a66f3da99dcb4dcbd28544110636b50adfb0f0d.

This is due to the depend commit has been reverted on upstream:
commit baad10973fdb ("Revert "drm/scheduler: track GPU active time per entity"")

Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404002601.24136-2-yq882255@163.com

drm/vblank: Fix for drivers that do not drm_vblank_init()

This should fix a crash that was reported on ast (and possibly other
drivers which do not initialize vblank).

   fbcon: Taking over console
   Unable to handle kernel NULL pointer dereference at virtual address 0000000000000074
   Mem abort info:
     ESR = 0x0000000096000004
     EC = 0x25: DABT (current EL), IL = 32 bits
     SET = 0, FnV = 0
     EA = 0, S1PTW = 0
     FSC = 0x04: level 0 translation fault
   Data abort info:
     ISV = 0, ISS = 0x00000004
     CM = 0, WnR = 0
   user pgtable: 4k pages, 48-bit VAs, pgdp=0000080009d16000
   [0000000000000074] pgd=0000000000000000, p4d=0000000000000000
   Internal error: Oops: 0000000096000004 [#1] SMP
   Modules linked in: ip6table_nat tun nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set nf_tables nfnetlink qrtr sunrpc binfmt_misc vfat fat xfs snd_usb_audio snd_hwdep snd_usbmidi_lib snd_seq snd_pcm snd_rawmidi snd_timer snd_seq_device snd soundcore joydev mc ipmi_ssif ipmi_devintf ipmi_msghandler arm_spe_pmu arm_cmn arm_dsu_pmu arm_dmc620_pmu cppc_cpufreq loop zram crct10dif_ce polyval_ce nvme polyval_generic ghash_ce sbsa_gwdt igb nvme_core ast nvme_common i2c_algo_bit xgene_hwmon gpio_dwapb scsi_dh_rdac scsi_dh_emc scsi_dh_alua ip6_tables ip_tables dm_multipath fuse
   CPU: 12 PID: 469 Comm: kworker/12:1 Not tainted 6.3.0-rc2-00008-gd39e48ca80c0 #1
   Hardware name: ADLINK AVA Developer Platform/AVA Developer Platform, BIOS TianoCore 2.04.100.07 (SYS: 2.06.20220308) 09/08/2022
   Workqueue: events fbcon_register_existing_fbs
   pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
   pc : drm_crtc_next_vblank_start+0x2c/0x98
   lr : drm_atomic_helper_wait_for_fences+0x90/0x240
   sp : ffff80000d583960
   x29: ffff80000d583960 x28: ffff07ff8fc187b0 x27: 0000000000000000
   x26: ffff07ff99c08c00 x25: 0000000000000038 x24: ffff07ff99c0c000
   x23: 0000000000000001 x22: 0000000000000038 x21: 0000000000000000
   x20: ffff07ff9640a280 x19: 0000000000000000 x18: ffffffffffffffff
   x17: 0000000000000000 x16: ffffb24d2eece1c0 x15: 0000003038303178
   x14: 3032393100000048 x13: 0000000000000000 x12: 0000000000000000
   x11: 0000000000000000 x10: 0000000000000000 x9 : ffffb24d2eeeaca0
   x8 : ffff80000d583628 x7 : 0000080077783000 x6 : 0000000000000000
   x5 : ffff80000d584000 x4 : ffff07ff99c0c000 x3 : 0000000000000130
   x2 : 0000000000000000 x1 : ffff80000d5839c0 x0 : ffff07ff99c0cc08
   Call trace:
    drm_crtc_next_vblank_start+0x2c/0x98
    drm_atomic_helper_wait_for_fences+0x90/0x240
    drm_atomic_helper_commit+0xb0/0x188
    drm_atomic_commit+0xb0/0xf0
    drm_client_modeset_commit_atomic+0x218/0x280
    drm_client_modeset_commit_locked+0x64/0x1a0
    drm_client_modeset_commit+0x38/0x68
    __drm_fb_helper_restore_fbdev_mode_unlocked+0xb0/0xf8
    drm_fb_helper_set_par+0x44/0x88
    fbcon_init+0x1e0/0x4a8
    visual_init+0xbc/0x118
    do_bind_con_driver.isra.0+0x194/0x3a0
    do_take_over_console+0x50/0x70
    do_fbcon_takeover+0x74/0xf8
    do_fb_registered+0x13c/0x158
    fbcon_register_existing_fbs+0x78/0xc0
    process_one_work+0x1ec/0x478
    worker_thread+0x74/0x418
    kthread+0xec/0x100
    ret_from_fork+0x10/0x20
   Code: f9400004 b9409013 f940a082 9ba30a73 (b9407662)
   ---[ end trace 0000000000000000 ]---

v2: Use drm_dev_has_vblank()

Reported-by: Nathan Chancellor <nathan@kernel.org>
Fixes: d39e48ca80c0 ("drm/atomic-helper: Set fence deadline for vblank")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403160314.1210533-1-robdclark@gmail.com

fbdev/radeon: use pci aperture helpers

It's not exactly the same since the open coded version doesn't set
primary correctly. But that's a bugfix, so shouldn't hurt really.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-fbdev@vger.kernel.org
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230111154112.90575-7-daniel.vetter@ffwll.ch

staging/lynxfb: Use pci aperture helper

It exists! Note that since this is an exact copy, there shouldn't be
any functional difference here.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Teddy Wang <teddy.wang@siliconmotion.com>
Cc: linux-fbdev@vger.kernel.org
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230111154112.90575-6-daniel.vetter@ffwll.ch

drm/ast: Use drm_aperture_remove_conflicting_pci_framebuffers

It's just open coded and matches.

Note that Thomas said that his version apparently failed for some
reason, but hey maybe we should try again.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Tested-by: Thomas Zimmmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230111154112.90575-1-daniel.vetter@ffwll.ch

video/aperture: Fix typos in comments

EFI FB, VESA FB or VGA FB etc belong to firmware based framebuffer driver.

Signed-off-by: Sui Jingfeng <suijingfeng@loongson.cn>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404040101.2165600-1-suijingfeng@loongson.cn

dt-bindings: display: Start the info graphics with HS/VS change

The VS signal change is synchronized to HS signal change, start the
info graphics with that event, instead of having that event occur in
the middle of it.

Scope trace of DPI bus with HS/VS active HIGH looks as follows:
         ________________...__
VS...___/__         __        \______...
HS...___/  \_______/  \__...__/  \___...
        ^                        ^
|                        |
        |    Used to start here -'
|
'--- Start info graphics here

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230221200407.16531-1-marex@denx.de

drm/bridge: tc358767: Enable DSI burst mode, LPM, non-continuous clock

The TC358767/TC358867/TC9595 are capable of DSI burst mode, which
is more energy efficient than the non-burst modes. Make use of it.

The TC358767/TC358867/TC9595 are capable of DSI non-continuous clock,
since it sources the internal PLL clock from external clock source.
The DSI non-continuous clock further reduces power utilization.

The TC358767/TC358867/TC9595 may use DSI LPM for command transmissions,
make sure this is configured correctly in the DSI mode flags.

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20221016003632.406468-1-marex@denx.de

drm/vram-helper: turn on PRIME import/export

We don't populate drm_driver.gem_prime_import_sg_table so only
DMA-BUFs exported from our own device can be imported. We don't
populate drm_gem_object_funcs.get_sg_table so DMA-BUFs cannot be
imported into another device. Still, this is useful to user-space
to share buffers between processes and between API boundaries
(e.g. wlroots hard-requires PRIME import/export support).

v2: expand commit message

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Tian Tao <tiantao6@hisilicon.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230302143502.500661-2-contact@emersion.fr

drm/prime: reject DMA-BUF attach when get_sg_table is missing

drm_gem_map_dma_buf() requires drm_gem_object_funcs.get_sg_table
to be implemented, or else WARNs.

Allow drivers to leave this hook unimplemented to implement purely
local DMA-BUFs (ie, DMA-BUFs which cannot be imported anywhere
else but the device which allocated them). In that case, reject
imports to other devices in drm_gem_map_attach().

v2: new patch

v3: use ENOSYS

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Tian Tao <tiantao6@hisilicon.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230302143502.500661-1-contact@emersion.fr

drm/bridge: lt8912b: Fix DSI Video Mode

LT8912 DSI port supports only Non-Burst mode video operation with Sync
Events and continuous clock on clock lane, correct dsi mode flags
according to that removing MIPI_DSI_MODE_VIDEO_BURST flag.

Cc: <stable@vger.kernel.org>
Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230330093131.424828-1-francesco@dolcini.it

drm/lima: add show_fdinfo for drm usage stats

This exposes an accumulated active time per client via the fdinfo
infrastructure per execution engine, following
Documentation/gpu/drm-usage-stats.rst.
In lima, the exposed execution engines are gp and pp.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230312233052.21095-4-nunes.erico@gmail.com

drm/lima: allocate unique id per drm_file

To track if fds are pointing to the same execution context and export
the expected information to fdinfo, similar to what is done in other
drivers.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230312233052.21095-3-nunes.erico@gmail.com

drm/lima: add usage counting method to ctx_mgr

lima maintains a context manager per drm_file, similar to amdgpu.
In order to account for the complete usage per drm_file, all of the
associated contexts need to be considered.
Previously released contexts also need to be accounted for but their
drm_sched_entity info is gone once they get released, so account for it
in the ctx_mgr.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230312233052.21095-2-nunes.erico@gmail.com

drm/lima/lima_drv: Add missing unwind goto in lima_pdev_probe()

Smatch reports:
drivers/gpu/drm/lima/lima_drv.c:396 lima_pdev_probe() warn:
missing unwind goto?

Store return value in err and goto 'err_out0' which has
lima_sched_slab_fini() before returning.

Fixes: a1d2a6339961 ("drm/lima: driver for ARM Mali4xx GPUs")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230314052711.4061652-1-harshit.m.mogalapalli@oracle.com

dt-bindings: display: sitronix,st7701: document port and rotation

Panels are supposed to have one port (defined in panel-common.yaml
binding) and can have also rotation:

  rk3326-odroid-go3.dtb: panel@0: 'port', 'rotation' do not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Link: https://lore.kernel.org/r/20230326204224.80181-4-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: elida,kd35t133: document port and rotation

Panels are supposed to have one port (defined in panel-common.yaml
binding) and can have also rotation:

  rk3326-odroid-go2.dtb: panel@0: 'port', 'rotation' do not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Link: https://lore.kernel.org/r/20230326204224.80181-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: feiyang,fy07024di26a30d: document port

Panels are supposed to have one port (defined in panel-common.yaml
binding):

  rk3399-rockpro64.dtb: panel@0: 'port' does not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230326204224.80181-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: xinpeng,xpp055c272: document port

Panels are supposed to have one port (defined in panel-common.yaml
binding):

  px30-evb.dtb: panel@0: 'port' does not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230326204224.80181-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: sitronix,st7789v: document dc-gpios

The device comes with DCX pin which is already used in
canaan/sipeed_maixduino.dts (although not in Linux driver).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230326164700.104570-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

drm/panfrost: Add basic support for speed binning

Some SoCs implementing ARM Mali GPUs are subject to speed binning:
this means that some versions of the same SoC model may need to be
limited to a slower frequency compared to the other:
this is being addressed by reading nvmem (usually, an eFuse array)
containing a number that identifies the speed binning of the chip,
which is usually related to silicon quality.

To address such situation, add basic support for reading the
speed-bin through nvmem, as to make it possible to specify the
supported hardware in the OPP table for GPUs.
This commit also keeps compatibility with any platform that does
not specify (and does not even support) speed-binning.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323090822.61766-3-angelogioacchino.delregno@collabora.com

dt-bindings: gpu: mali-bifrost: Document nvmem for speedbin support

Some SoCs implementing ARM Mali GPUs may be subject to speed binning
and the usable bin is read from nvmem: document the addition of nvmem
and nvmem-cells for 'speed-bin'.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323090822.61766-2-angelogioacchino.delregno@collabora.com

drm: Use of_property_read_bool() for boolean properties

It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties.
Convert reading boolean properties to of_property_read_bool().

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20230310144706.1542295-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: seiko,43wvf1g: Change the maintainer's contact

Marco's NXP email is no longer valid.

Marco told me offline that he has no interest to be listed as the
maintainer contact for this binding, so add my contact.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329201150.741106-1-festevam@gmail.com

Merge remote-tracking branch 'drm/drm-next' into drm-misc-next

Backmerge to get rc4.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

dt-bindings: display: boe,tv101wum-nl6: document rotation

Allow 'rotation' property (coming from panel-common.yaml) already used
in DTS:

  sc7180-trogdor-quackingstick-r0.dtb: panel@0: 'rotation' does not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230326155425.91181-6-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: visionox,rm69299: document reg

Panels are supposed to have one reg.  This fixes dtbs_check warnings
like:

  sc7180-idp.dtb: panel@0: 'reg' does not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230326155425.91181-5-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: panel-simple-dsi: document port

Panels are supposed to have one port (coming from panel-common.yaml
binding):

  msm8916-samsung-a3u-eur.dtb: panel@0: 'port' does not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230326155425.91181-4-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: panel-simple-dsi: allow vddio variant

Few panels like Samsung s6e3fc2x01 and sofef00 use vddio-supply instead
of power-supply (in DTS and Linux driver), so allow it to fix:

  sdm845-oneplus-enchilada.dtb: panel@0: 'power-supply' is a required property

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230326155425.91181-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: novatek,nt36672a: correct VDDIO supply

The nt36672a bindings were added with a mistake on VDDIO supply calling
it in one place vddio and in other vddi0.  Typical name is rather vddio
which is also now used by DTS (sdm845-xiaomi-beryllium-common.dtsi) and
Linux driver.

Fixes: c2abcf30efb8 ("dt-bindings: display: novatek,nt36672a: Fix unevaluated properties warning")
Fixes: 9528a02430df ("dt-bindings: display: panel: Add bindings for Novatek nt36672a")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230326155425.91181-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: display: panel-simple: merge Innolux p120zdg-bf1

There is nothing special in Innolux p120zdg-bf1 panel, so just like
other Innolux panels it can be made part of panel-simple.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230326155425.91181-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

Merge v6.3-rc4 into drm-next

I just landed the fence deadline PR from Rob that a bunch of drivers
want/need to apply driver-specific patches. Backmerge -rc4 so that
they don't have to be stuck on -rc2 for no reason at all.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Merge tag 'dma-fence-deadline' of https://gitlab.freedesktop.org/drm/msm into drm-next

This series adds a deadline hint to fences, so realtime deadlines
such as vblank can be communicated to the fence signaller for power/
frequency management decisions.

This is partially inspired by a trick i915 does, but implemented
via dma-fence for a couple of reasons:

1) To continue to be able to use the atomic helpers
2) To support cases where display and gpu are different drivers

See https://patchwork.freedesktop.org/series/93035/

This does not yet add any UAPI, although this will be needed in
a number of cases:

1) Workloads "ping-ponging" between CPU and GPU, where we don't
   want the GPU freq governor to interpret time stalled waiting
   for GPU as "idle" time
2) Cases where the compositor is waiting for fences to be signaled
   before issuing the atomic ioctl, for example to maintain 60fps
   cursor updates even when the GPU is not able to maintain that
   framerate.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGt5nDQpa6J86V1oFKPA30YcJzPhAVpmF7N1K1g2N3c=Zg@mail.gmail.com

drm/atomic-helper: Set fence deadline for vblank

For an atomic commit updating a single CRTC (ie. a pageflip) calculate
the next vblank time, and inform the fence(s) of that deadline.

v2: Comment typo fix (danvet)
v3: If there are multiple CRTCs, consider the time of the soonest vblank

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drm/vblank: Add helper to get next vblank time

Will be used in the next commit to set a deadline on fences that an
atomic update is waiting on.

v2: Calculate time at *start* of vblank period, not end
v3: Fix kbuild complaints

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>

drm/scheduler: Add fence deadline support

As the finished fence is the one that is exposed to userspace, and
therefore the one that other operations, like atomic update, would
block on, we need to propagate the deadline from from the finished
fence to the actual hw fence.

v2: Split into drm_sched_fence_set_parent() (ckoenig)
v3: Ensure a thread calling drm_sched_fence_set_deadline_finished() sees
    fence->parent set before drm_sched_fence_set_parent() does this
    test_bit(DMA_FENCE_FLAG_HAS_DEADLINE_BIT).

Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Luben Tuikov <luben.tuikov@amd.com>

dma-buf/sync_file: Surface sync-file uABI

We had all of the internal driver APIs, but not the all important
userspace uABI, in the dma-buf doc.  Fix that.  And re-arrange the
comments slightly as otherwise the comments for the ioctl nr defines
would not show up.

v2: Fix docs build warning coming from newly including the uabi header
    in the docs build

Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>

dma-buf/dma-resv: Add a way to set fence deadline

Add a way to set a deadline on remaining resv fences according to the
requested usage.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Christian König <christian.koenig@amd.com>

dma-buf/fence-chain: Add fence deadline support

Propagate the deadline to all the fences in the chain.

v2: Use dma_fence_chain_contained [Tvrtko]

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Christian König <christian.koenig@amd.com>

drm: Use of_property_present() for testing DT property presence

It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties. As
part of this, convert of_get_property/of_find_property calls to the
recently added of_property_present() helper when we just want to test
for presence of a property and nothing more.

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Liu Ying <victor.liu@nxp.com> # i.MX bridge
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20230310144705.1542207-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

Merge tag 'exynos-drm-next-for-v6.4' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-next

A patch series for moving MIPI-DSI driver for Exynos DRM to drm/bridge
directory so that I.MX SoC family can also share the same device driver.
Samsung MIPI DSIM device is a common IP that can be used by Exynos and I.MX8M
Mini/Nano/Plus SoC. Regarding this, this patch series has added several
things below to existing MIPI DSI driver,
- Add exynos_dsi_type enum type to provide controller data from different
  platforms.
- Add two pipeline detection ways support - existing Exynos DSI child node
  and I.MX family of-graph port or ports.
- Consider component and bridged based DRM drivers.
- Add device tree binding support of I.MX family.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230328040524.49278-1-inki.dae@samsung.com

drm: bridge: samsung-dsim: Add i.MX8M Plus support

Add extras to support i.MX8M Plus. The main change is the removal of
HS/VS/DE signal inversion in the LCDIFv3-DSIM glue logic, otherwise
the implementation of this IP in i.MX8M Plus is very much compatible
with the i.MX8M Mini/Nano one.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Acked-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <m.szyprowski@samsung.com>

dt-bindings: display: exynos: dsim: Add NXP i.MX8M Plus support

Samsung MIPI DSIM bridge can also be found in i.MX8M Plus SoC.

Add dt-bingings for it.

Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: bridge: samsung-dsim: Add i.MX8M Mini/Nano support

Samsung MIPI DSIM master can also be found in i.MX8M Mini/Nano SoC.

Add compatible and associated driver_data for it.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Acked-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Adam Ford <aford173@gmail.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

dt-bindings: display: exynos: dsim: Add NXP i.MX8M Mini/Nano support

Samsung MIPI DSIM bridge can also be found in i.MX8M Mini/Nano SoC.

Add dt-bingings for it.

Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: bridge: Generalize Exynos-DSI driver into a Samsung DSIM bridge

Samsung MIPI DSIM controller is common DSI IP that can be used in various
SoCs like Exynos, i.MX8M Mini/Nano.

In order to access this DSI controller between various platform SoCs,
the ideal way to incorporate this in the drm stack is via the drm bridge
driver.

We already have a consolidated code for supporting component and bridge
based DRM drivers, so keep the exynos component based code in existing
exynos_drm_dsi.c and move generic bridge code as part of samsung-dsim.c

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Add host helper for te_irq_handler

IRQ handler for te-gpio seems to be common across DSIM host.

However, Exynos is handling this via CRTC drivers but there is no clear
evidence on how the same has been handled in i.MX8MM. Keeping the handler
as-it-is can be a viable option but adding DSIM bridge core in upcoming
patches is not possible to call Exynos CRTC handler as DSIM bridge has
to be common across DRM bridge core instead of platform specific DRM
drivers like Exynos here.

So, this patch handles the handler via platform host helper, so-that
handling platform specific hook across Exynos and generic can be
reasonable till it makes it generic across all platforms.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Consolidate component and bridge

DSI host registration, attach and detach operations are quite
different for the component and bridge-based DRM drivers.

Supporting generic bridge driver to use both component and bridge
based DRM drivers can be tricky and would require additional host
related operation hooks.

Add host operation hooks for registering and unregistering Exynos
and generic drivers, where Exynos hooks are used in existing Exynos
component based DRM drivers and generic hooks are used in i.MX8M
bridge based DRM drivers.

Add host attach and detach operation hooks for Exynos component
DRM drivers and those get invoked while DSI core host attach and
detach gets called.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Add atomic_get_input_bus_fmts

Finding the right input bus format throughout the pipeline is hard
so add atomic_get_input_bus_fmts callback and initialize with the
proper input format from list of supported output formats.

This format can be used in pipeline for negotiating bus format between
the DSI-end of this bridge and the other component closer to pipeline
components.

List of Pixel formats are taken from,
AN13573 i.MX 8/RT MIPI DSI/CSI-2, Rev. 0, 21 March 2022
3.7.4 Pixel formats
Table 14. DSI pixel packing formats

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Add input_bus_flags

LCDIF-DSIM glue logic inverts the HS/VS/DE signals and expecting
the i.MX8M Mini/Nano DSI host to add additional Data Enable signal
active low (DE_LOW). This makes the valid data transfer on each
horizontal line.

So, add additional bus flags DE_LOW setting via input_bus_flags
for i.MX8M Mini/Nano platforms.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Suggested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Add atomic check

Look like an explicit fixing up of mode_flags is required for DSIM IP
present in i.MX8M Mini/Nano SoCs.

At least the LCDIF + DSIM needs active low sync polarities in order
to correlate the correct sync flags of the surrounding components in
the chain to make sure the whole pipeline can work properly.

On the other hand the i.MX 8M Mini Applications Processor Reference Manual,
Rev. 3, 11/2020 says.
"13.6.3.5.2 RGB interface
 Vsync, Hsync, and VDEN are active high signals."

i.MX 8M Mini Applications Processor Reference Manual Rev. 3, 11/2020
3.6.3.5.2 RGB interface
i.MX 8M Nano Applications Processor Reference Manual Rev. 2, 07/2022
13.6.2.7.2 RGB interface
both claim "Vsync, Hsync, and VDEN are active high signals.", the
LCDIF must generate inverted HS/VS/DE signals, i.e. active LOW.

No clear evidence about whether it can be documentation issues or
something, so added proper comments on the code.

Comments are suggested by Marek Vasut.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Handle proper host initialization

Host transfer() in the DSI master will invoke only when the DSI commands
are sent from DSI devices like DSI Panel or DSI bridges and this host
the transfer wouldn't invoke for I2C-based-DSI bridge drivers.

Handling DSI host initialization in transfer calls misses the controller
setup for I2C configured DSI bridges.

This patch updates the DSI host initialization by calling host to init
from bridge pre_enable as the bridge pre_enable API is invoked by core
as it is common across all classes of DSI device drivers.

The host init during pre_enable is conditional and not invoked for Exynos
as existing downstream drm panels and bridges in Exynos are expecting
the host initialization during DSI transfer.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Introduce hw_type platform data

Samsung MIPI DSIM controller is common DSI IP that can be used
in various SoCs like Exynos, i.MX8M Mini/Nano/Plus.

Add hw_type enum via platform_data so that accessing the different
controller data between various platforms becomes easy and meaningful.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Add platform PLL_P (PMS_P) offset

Look like PLL PMS_P offset value varies between platforms that have
Samsung DSIM IP.

However, there is no clear evidence for it as both Exynos and i.MX
8M Mini Application Processor Reference Manual is still referring
the PMS_P offset as 13.

The offset 13 is not working for i.MX8M Mini SoCs but the downstream
NXP sec-dsim.c driver is using offset 14 for i.MX8M Mini SoC platforms
[1] [2].

PMS_P value set in sec_mipi_dsim_check_pll_out using PLLCTRL_SET_P()
with offset 13 and then an additional offset of one bit added in
sec_mipi_dsim_config_pll via PLLCTRL_SET_PMS().

Not sure whether it is reference manual documentation or something
else but this patch trusts the downstream code and handle PLL_P offset
via platform driver data so-that imx8mm driver data shall use
pll_p_offset to 14.

Similar to Mini the i.MX8M Nano/Plus also has P=14, unlike Exynos.

[1] https://source.codeaurora.org/external/imx/linux-imx/tree/drivers/gpu/drm/bridge/sec-dsim.c?h=imx_5.4.47_2.2.0#n210
[2] https://source.codeaurora.org/external/imx/linux-imx/tree/drivers/gpu/drm/bridge/sec-dsim.c?h=imx_5.4.47_2.2.0#n211

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Mark PHY as optional

The same Samsung MIPI DSIM master can also be used in NXP's
i.MX8M Mini/Nano/Plus SoC.

In i.MX8M Mini/Nano/Plus SoC the DSI Phy requires a MIPI DPHY
bit to reset in order to activate the PHY and that can be done
via upstream i.MX8M blk-ctrl driver.

So, mark the phy get as optional.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Lookup OF-graph or Child node devices

In general, for MIPI DSI there are three ways to represent the
pipeline for an upstream bridge to find the connected downstream
panel or bridge.

1. Child panel or bridge as a conventional device tree child node.
2. Child panel or bridge as an OF-graph port node.
3. Child panel or bridge as an OF-graph ports node.

There are three different downstream panels or bridges that are
possible to connect an upstream DSI host bridge - DSI Panel,
DSI Bridge, and I2C-Configured DSI bridge.

An example of the downstream panel represented as a child node,

&dsi {
   compatible = "samsung,exynos5433-mipi-dsi";

   ports {
        port@0 {
             reg = <0>;

             dsi_to_mic: endpoint {
                  remote-endpoint = <&mic_to_dsi>;
             };
        };
   };

   panel@0 {
        reg = <0>;
   };
};

An example of the downstream bridge represented as a port node,

&i2c4 {
   bridge@2c {
compatible = "ti,sn65dsi84";

        ports {
             port@0 {
                  reg = <0>;

                  bridge_in_dsi: endpoint {
                       remote-endpoint = <&dsi_out_bridge>;
                       data-lanes = <1 2>;
                  };
             };

     port@2 {
          reg = <2>;

                  bridge_out_panel: endpoint {
                       remote-endpoint = <&panel_out_bridge>;
                  };
             };
        };
   };
};

&dsi {
   compatible = "fsl,imx8mm-mipi-dsim";

   port {
        dsi_in_lcdif: endpoint@0 {
     reg = <0>;
     remote-endpoint = <&lcdif_out_dsi>;
};

dsi_out_bridge: endpoint@1 {
     reg = <1>;
     remote-endpoint = <&bridge_in_dsi>;
};
   };
};

An example of the downstream bridge represented as a ports node,

&dsi {
   compatible = "fsl,imx8mm-mipi-dsim";

   ports {
port@0 {
     reg = <0>;

     dsi_in_lcdif: endpoint@0 {
  reg = <0>;
  remote-endpoint = <&lcdif_out_dsi>;
     };
};

port@1 {
     reg = <1>;

     dsi_out_bridge: endpoint {
  remote-endpoint = <&bridge_in_dsi>;
     };
};
};

In, summary it is possible to represent all three downstream slaves
devices using OF-graph port or ports node however only DSI Panel and
DSI Bridge are possible but not possible to represent I2C-Configured
DSI bridge child nodes since I2C-Configure bridges are child of I2C
node, not upstream DSI host bridge and it is must represent them
endpoint port linking.

This indeed means, the OF-graph port or ports representation is
mandatory for I2C-Configured DSI bridges.

This patch tries to add an OF-graph port or ports representation
detection code on top of existing child node detection.

It is possible to replace the entire detection code using existing
drm_of helper drm_of_find_panel_or_bridge but it will break the
Exynos DSI since the pipeline doesn't support OF-graph port or ports
node.

Overall, this patch has a combination of child and OF-graph pipeline
detections in order to support the backward compatibility of Exynos
DSI child node and i.MX8M Mini/Nano/Plus OF-graph port or ports
node pipelines.

This is the first common DSI host bridge driver that needs to support
all possible downstream connection pipeline combinations.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm: exynos: dsi: Drop explicit call to bridge detach

Exynos DSI already converted into a bridge driver, so bridge
detach will suppose happened during bridge chain removal done
by the bridge core.

Drop the explicit call chain to detach the bridge.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drm/panel-edp: Add B133UAN01.0 edp panel entry

This panel is found in Lenovo Flex 5G laptop, so add the entry for it

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230324165909.131831-1-vkoul@kernel.org

drm/panel: magnachip: Prevent error pointer dereference in probe

Don't dereference "db->dsi_dev" when it is an error pointer.

Fixes: 249a4f5e663c ("drm/panel: Add Magnachip D53E6EA8966 Panel Driver")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/de0273a8-8910-4ac4-b4ed-f7691c4d2ca6@kili.mountain

Merge tag 'drm-rcar-next-20230325' of git://git./linux/kernel/git/pinchartl/linux into drm-next

Miscellaneous fixes and improvements for rcar-du

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230325204922.GD19335@pendragon.ideasonboard.com

drm/scheduler: Fix variable name in function description

Compiling AMD GPU drivers displays two warnings:

drivers/gpu/drm/scheduler/sched_main.c:738: warning: Function parameter or member 'file' not described in 'drm_sched_job_add_syncobj_dependency'
drivers/gpu/drm/scheduler/sched_main.c:738: warning: Excess function
parameter 'file_private' description in
'drm_sched_job_add_syncobj_dependency'

Get rid of them by renaming the variable name on the function description

Signed-off-by: Caio Novais <caionovais@usp.br>
Link: https://lore.kernel.org/r/20230325131532.6356-1-caionovais@usp.br
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>

drm/bridge: it6505: Add range and selector_reg

There are 2 banks on it6505, and when writing to different bank,
REG_BANK_SEL needs to be set to the targeted bank. The current code set
this additionally, which causes a race condition when a process is
writing bank 0 registers while another process set the bank to 1. Set
ranges in regmap config so the regmap API would handle the bank changes.

Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230327044804.3657551-1-hsinyi@chromium.org

Linux 6.3-rc4

Merge tag 'usb-6.3-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt driver fixes from Greg KH:
 "Here are a small set of USB and Thunderbolt driver fixes for reported
  problems and a documentation update, for 6.3-rc4.

  Included in here are:

   - documentation update for uvc gadget driver

   - small thunderbolt driver fixes

   - cdns3 driver fixes

   - dwc3 driver fixes

   - dwc2 driver fixes

   - chipidea driver fixes

   - typec driver fixes

   - onboard_usb_hub device id updates

   - quirk updates

  All of these have been in linux-next with no reported problems"

* tag 'usb-6.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (30 commits)
  usb: dwc2: fix a race, don't power off/on phy for dual-role mode
  usb: dwc2: fix a devres leak in hw_enable upon suspend resume
  usb: chipidea: core: fix possible concurrent when switch role
  usb: chipdea: core: fix return -EINVAL if request role is the same with current role
  thunderbolt: Rename shadowed variables bit to interrupt_bit and auto_clear_bit
  thunderbolt: Disable interrupt auto clear for rings
  thunderbolt: Use const qualifier for `ring_interrupt_index`
  usb: gadget: Use correct endianness of the wLength field for WebUSB
  uas: Add US_FL_NO_REPORT_OPCODES for JMicron JMS583Gen 2
  usb: cdnsp: changes PCI Device ID to fix conflict with CNDS3 driver
  usb: cdns3: Fix issue with using incorrect PCI device function
  usb: cdnsp: Fixes issue with redundant Status Stage
  MAINTAINERS: make me a reviewer of USB/IP
  thunderbolt: Use scale field when allocating USB3 bandwidth
  thunderbolt: Limit USB3 bandwidth of certain Intel USB4 host routers
  thunderbolt: Call tb_check_quirks() after initializing adapters
  thunderbolt: Add missing UNSET_INBOUND_SBTX for retimer access
  thunderbolt: Fix memory leak in margining
  usb: dwc2: drd: fix inconsistent mode if role-switch-default-mode="host"
  docs: usb: Add documentation for the UVC Gadget
  ...

Merge tag 'sched_urgent_for_v6.3_rc4' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Borislav Petkov:

 - Fix a corner case where vruntime of a task is not being sanitized

* tag 'sched_urgent_for_v6.3_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Sanitize vruntime of entity being migrated

Merge tag 'perf_urgent_for_v6.3_rc4' of git://git./linux/kernel/git/tip/tip

Pull perf fix from Borislav Petkov:

 - Properly clear perf event status tracking in the AMD perf event
   overflow handler

* tag 'perf_urgent_for_v6.3_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/amd/core: Always clear status for idx

Merge tag 'core_urgent_for_v6.3_rc4' of git://git./linux/kernel/git/tip/tip

Pull core fixes from Borislav Petkov:

 - Do the delayed RCU wakeup for kthreads in the proper order so that
   former doesn't get ignored

 - A noinstr warning fix

* tag 'core_urgent_for_v6.3_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  entry/rcu: Check TIF_RESCHED _after_ delayed RCU wake-up
  entry: Fix noinstr warning in __enter_from_user_mode()