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2023-01-02drm/tiny: ili9486: Enable driver module autoloadingCarlo Caione
SPI devices use the spi_device_id for module autoloading even on systems using device tree. Add the spi_device_id entry to enable autoloading for the 3.5inch RPi Display (rpi-lcd-35 and piscreen). Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Carlo Caione <ccaione@baylibre.com> Reviewed-by: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221116-s905x_spi_ili9486-v4-1-f86b4463b9e4@baylibre.com
2022-12-29dt-bindings: display/panel: Add the Focaltech gpt3Christophe Branchereau
Add bindings for the Forcaltech gpt3, which is a 640x480 3.0" 4:3 IPS LCD Panel found in the YLM/Anbernic RG300X handheld. Signed-off-by: Christophe Branchereau <cbranchereau@gmail.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221219195233.375637-3-cbranchereau@gmail.com
2022-12-29drm/panel: add the orisetech ota5601aChristophe Branchereau
Add the orisetech ota5601a ic driver For now it only supports the focaltech gpt3 3" 640x480 ips panel found in the ylm rg300x handheld. Signed-off-by: Christophe Branchereau <cbranchereau@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221219195233.375637-2-cbranchereau@gmail.com
2022-12-22drm/todo: update the debugfs clean up taskMaíra Canal
The structs drm_debugfs_info and drm_debugfs_entry introduced a new debugfs structure to DRM, centered on drm_device instead of drm_minor. Therefore, remove the tasks related to create a new device-centered debugfs structure and add a new task to replace the use of drm_debugfs_create_files() for the use of drm_debugfs_add_file() and drm_debugfs_add_files(). Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Melissa Wen <mwen@igalia.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Maíra Canal <mairacanal@riseup.net> Link: https://patchwork.freedesktop.org/patch/msgid/20221219120621.15086-8-mcanal@igalia.com
2022-12-22drm/vkms: use new debugfs device-centered functionsMaíra Canal
Replace the use of drm_debugfs_create_files() with the new drm_debugfs_add_files() function, which centers the debugfs files management on the drm_device instead of drm_minor. Moreover, remove the debugfs_init hook and add the debugfs files directly on vkms_create(), before drm_dev_register(). Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Melissa Wen <mwen@igalia.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Maíra Canal <mairacanal@riseup.net> Link: https://patchwork.freedesktop.org/patch/msgid/20221219120621.15086-7-mcanal@igalia.com
2022-12-22drm/v3d: use new debugfs device-centered functionsMaíra Canal
Replace the use of drm_debugfs_create_files() with the new drm_debugfs_add_files() function, which centers the debugfs files management on the drm_device instead of drm_minor. Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Melissa Wen <mwen@igalia.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Maíra Canal <mairacanal@riseup.net> Link: https://patchwork.freedesktop.org/patch/msgid/20221219120621.15086-6-mcanal@igalia.com
2022-12-22drm/vc4: use new debugfs device-centered functionsMaíra Canal
Currently, vc4 has its own debugfs infrastructure that adds the debugfs files on drm_dev_register(). With the introduction of the new debugfs, functions, replace the vc4 debugfs structure with the DRM debugfs device-centered function, drm_debugfs_add_file(). Moreover, remove the explicit error handling of debugfs related functions, considering that the only failure mode is -ENOMEM and also that error handling is not recommended for debugfs functions, as pointed out in [1]. [1] https://lore.kernel.org/all/YWAmZdRwnAt6wh9B@kroah.com/ Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Reviewed-by: Melissa Wen <mwen@igalia.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Maíra Canal <mairacanal@riseup.net> Link: https://patchwork.freedesktop.org/patch/msgid/20221219120621.15086-5-mcanal@igalia.com
2022-12-22drm/debugfs: create debugfs late register functionsMaíra Canal
Although the device-centered debugfs functions can track requests for the addition of DRM debugfs files at any time and have them added all at once during drm_dev_register(), they are not able to create debugfs files for modeset components, as they are registered after the primary and the render drm_minor are registered. So, create a drm_debugfs_late_register() function, which is responsible for dealing with the creation of all the debugfs files for modeset components at once. Therefore, the functions drm_debugfs_add_file() and drm_debugfs_add_files() can be used in late_register hooks. Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Melissa Wen <mwen@igalia.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Maíra Canal <mairacanal@riseup.net> Link: https://patchwork.freedesktop.org/patch/msgid/20221219120621.15086-4-mcanal@igalia.com
2022-12-22drm: use new debugfs device-centered functions on DRM core filesMaíra Canal
Replace the use of drm_debugfs_create_files() with the new drm_debugfs_add_files() function in all DRM core files, centering the debugfs files management on the drm_device instead of drm_minor. Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Reviewed-by: Melissa Wen <mwen@igalia.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Maíra Canal <mairacanal@riseup.net> Link: https://patchwork.freedesktop.org/patch/msgid/20221219120621.15086-3-mcanal@igalia.com
2022-12-22drm/debugfs: create device-centered debugfs functionsMaíra Canal
Introduce the ability to track requests for the addition of DRM debugfs files at any time and have them added all at once during drm_dev_register(). Drivers can add DRM debugfs files to a device-managed list and, during drm_dev_register(), all added files will be created at once. Now, the drivers can use the functions drm_debugfs_add_file() and drm_debugfs_add_files() to create DRM debugfs files instead of using the drm_debugfs_create_files() function. Co-developed-by: Wambui Karuga <wambui.karugax@gmail.com> Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com> Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Reviewed-by: Melissa Wen <mwen@igalia.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Maíra Canal <mairacanal@riseup.net> Link: https://patchwork.freedesktop.org/patch/msgid/20221219120621.15086-2-mcanal@igalia.com
2022-12-20drm/ast: Init iosys_map pointer as I/O memory for damage handlingThomas Zimmermann
Ast hardware scans out the primary plane from video memory, which is in I/O-memory space. Hence init the damage handler's iosys_map pointer as I/O memory. Not all platforms support accessing I/O memory as system memory, although it's usually not a problem in ast's x86-based systems. The error report is at [1]. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com> Fixes: f2fa5a99ca81 ("drm/ast: Convert ast to SHMEM") Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Jocelyn Falempe <jfalempe@redhat.com> Cc: Dave Airlie <airlied@redhat.com> Cc: dri-devel@lists.freedesktop.org Link: https://lore.kernel.org/lkml/202212170111.eInM0unS-lkp@intel.com/T/#u # 1 Link: https://patchwork.freedesktop.org/patch/msgid/20221216193005.30280-1-tzimmermann@suse.de
2022-12-20drm/sprd: remove redundant error loggingDeepak R Varma
A call to platform_get_irq() already prints an error on failure within its own implementation. So printing another error based on its return value in the caller is redundant and should be removed. The clean up also makes if condition block braces unnecessary. Remove that as well. Issue identified using platform_get_irq.cocci coccicheck script. Signed-off-by: Deepak R Varma <drv@mailo.com> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/Y5XhPJ39ipMCcctq@qemulion
2022-12-20drm/drv: Make use of local variable driver in drm_dev_register()Uwe Kleine-König
There is a local variable that contains dev->driver. Make use of it instead of "open coding" it. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20221219183147.1639399-1-u.kleine-koenig@pengutronix.de
2022-12-19drm/qxl: stop using ttm_bo_waitChristian König
TTM is just wrapping core DMA functionality here, remove the mid-layer. No functional change. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221125102137.1801-6-christian.koenig@amd.com
2022-12-18drm/v3d: replace obj lookup steps with drm_gem_objects_lookupMelissa Wen
As v3d_lookup_bos() performs the same steps as drm_gem_objects_lookup(), replace the explicit code in v3d to simply use the DRM function. Signed-off-by: Melissa Wen <mwen@igalia.com> Reviewed-by: Maíra Canal <mcanal@igalia.com> Signed-off-by: Melissa Wen <melissa.srw@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221205135538.3545051-3-mwen@igalia.com
2022-12-18drm/v3d: cleanup BOs properly when lookup_bos failsMelissa Wen
When v3d_lookup_bos fails to `allocate validated BO pointers`, job->bo_count was already set to args->bo_count, but job->bo points to NULL. In this scenario, we must verify that job->bo is not NULL before iterating on it to proper clean up a job. Also, drm_gem_object_put already checks that the object passed is not NULL, doing the job->bo[i] checker redundant. Signed-off-by: Melissa Wen <mwen@igalia.com> Reviewed-by: Maíra Canal <mcanal@igalia.com> Signed-off-by: Melissa Wen <melissa.srw@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221205135538.3545051-2-mwen@igalia.com
2022-12-16drm/imx: move IPUv3 driver into separate subdirectoryLucas Stach
The IPUv3 and DCSS driver are two totally separate DRM drivers. Having one of them live in the drivers/gpu/drm/imx toplevel directory and the other one in the dcss/ subdirectory is confusing. Move the IPUv3 driver into its own subdirectory to make the separation more clear. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/20221125112519.3849636-1-l.stach@pengutronix.de Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://patchwork.freedesktop.org/patch/msgid/20221125112519.3849636-1-l.stach@pengutronix.de
2022-12-16drm/imx: ipuv3-plane: Fix overlay plane widthPhilipp Zabel
ipu_src_rect_width() was introduced to support odd screen resolutions such as 1366x768 by internally rounding up primary plane width to a multiple of 8 and compensating with reduced horizontal blanking. This also caused overlay plane width to be rounded up, which was not intended. Fix overlay plane width by limiting the rounding up to the primary plane. drm_rect_width(&new_state->src) >> 16 is the same value as drm_rect_width(dst) because there is no plane scaling support. Fixes: 94dfec48fca7 ("drm/imx: Add 8 pixel alignment fix") Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Link: https://lore.kernel.org/r/20221108141420.176696-1-p.zabel@pengutronix.de Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://patchwork.freedesktop.org/patch/msgid/20221108141420.176696-1-p.zabel@pengutronix.de
2022-12-16gpu: ipu-v3: common: Add of_node_put() for reference returned by ↵Liang He
of_graph_get_port_by_id() In ipu_add_client_devices(), we need to call of_node_put() for reference returned by of_graph_get_port_by_id() in fail path. Fixes: 17e052175039 ("gpu: ipu-v3: Do not bail out on missing optional port nodes") Signed-off-by: Liang He <windhl@126.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/20220720152227.1288413-1-windhl@126.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://patchwork.freedesktop.org/patch/msgid/20220720152227.1288413-1-windhl@126.com
2022-12-16drm/omap: dsi: Fix excessive stack usageTomi Valkeinen
dsi_dump_dsi_irqs(), a function used for debugfs prints, has a large struct in its frame, which can result in: drivers/gpu/drm/omapdrm/dss/dsi.c:1126:1: warning: the frame size of 1060 bytes is larger than 1024 bytes [-Wframe-larger-than=] As the performance of the function is of no concern, let's allocate the struct with kmalloc instead. Compile-tested only. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Link: https://patchwork.freedesktop.org/patch/msgid/20220916082206.167427-1-tomi.valkeinen@ideasonboard.com
2022-12-16drm/omapdrm: Remove unused struct csc_coef_rgb2yuvYuan Can
After commit 64ff18911878, struct csc_coef_rgb2yuv is not used any more and can be removed as well. Fixes: 64ff18911878 ("drm/omap: Enable COLOR_ENCODING and COLOR_RANGE properties for planes") Signed-off-by: Yuan Can <yuancan@huawei.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221014024810.21675-1-yuancan@huawei.com
2022-12-16drm: tidss: Fix pixel format definitionRandolph Sapp
There was a long-standing bug from a typo that created 2 ARGB1555 and ABGR1555 pixel format entries. Weston 10 has a sanity check that alerted me to this issue. According to the Supported Pixel Data formats table we have the later entries should have been for Alpha-X instead. Signed-off-by: Randolph Sapp <rs@ti.com> Fixes: 32a1795f57eecc ("drm/tidss: New driver for TI Keystone platform Display SubSystem") Reviewed-by: Aradhya Bhatia <a-bhatia1@ti.com> Acked-by: Andrew Davis <afd@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221202001803.1765805-1-rs@ti.com
2022-12-16drm/tidss: Set max DMA segment sizeAndrew Davis
We have no segment size limitations. Set to unlimited. Signed-off-by: Andrew Davis <afd@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220823001634.11461-1-afd@ti.com
2022-12-16drm/display/dp_mst: Fix payload addition on a disconnected sinkImre Deak
If an MST stream is enabled on a disconnected sink, the payload for the stream is not created and the MST manager's payload count/next start VC slot is not updated. Since the payload's start VC slot may still contain a valid value (!= -1) the subsequent disabling of such a stream could cause an incorrect decrease of the payload count/next start VC slot in drm_dp_remove_payload() and hence later payload additions will fail. Fix the above by marking the payload as invalid in the above case, so that it's skipped during payload removal. While at it add a debug print for this case. Cc: Lyude Paul <lyude@redhat.com> Cc: <stable@vger.kernel.org> # v6.1+ Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221214184258.2869417-3-imre.deak@intel.com
2022-12-16drm/display/dp_mst: Fix down message handling after a packet reception errorImre Deak
After an error during receiving a packet for a multi-packet DP MST sideband message, the state tracking which packets have been received already is not reset. This prevents the reception of subsequent down messages (due to the pending message not yet completed with an end-of-message-transfer packet). Fix the above by resetting the reception state after a packet error. Cc: Lyude Paul <lyude@redhat.com> Cc: <stable@vger.kernel.org> # v3.17+ Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221214184258.2869417-2-imre.deak@intel.com
2022-12-16drm/display/dp_mst: Fix down/up message handling after sink disconnectImre Deak
If the sink gets disconnected during receiving a multi-packet DP MST AUX down-reply/up-request sideband message, the state keeping track of which packets have been received already is not reset. This results in a failed sanity check for the subsequent message packet received after a sink is reconnected (due to the pending message not yet completed with an end-of-message-transfer packet), indicated by the "sideband msg set header failed" error. Fix the above by resetting the up/down message reception state after a disconnect event. Cc: Lyude Paul <lyude@redhat.com> Cc: <stable@vger.kernel.org> # v3.17+ Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221214184258.2869417-1-imre.deak@intel.com
2022-12-16drm: bridge: it66121: Add support for the IT6610Paul Cercueil
Add support for the IT6610 HDMI encoder. The hardware is very similar, and therefore the driver did not require too many changes. Some bits are only available on the IT66121, and vice-versa. Also, the IT6610 requires specific polarities on the DE and pixel lines. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214130131.12962-1-paul@crapouillou.net
2022-12-16drm: bridge: it66121: Move VID/PID to new it66121_chip_info structurePaul Cercueil
This will make it easier later to introduce support for new chips in this driver. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214130122.12911-1-paul@crapouillou.net
2022-12-16drm: bridge: it66121: Set DDC preamble only once before reading EDIDPaul Cercueil
The DDC preamble and target address only need to be set once before reading the EDID, even if multiple segments have to be read. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214125821.12489-9-paul@crapouillou.net
2022-12-16drm: bridge: it66121: Don't clear DDC FIFO twicePaul Cercueil
The DDC FIFO was cleared before the loop in it66121_get_edid_block(), and at the beginning of each iteration; which means that it did not have to be cleared before the loop. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214125821.12489-8-paul@crapouillou.net
2022-12-16drm: bridge: it66121: Don't use DDC error IRQsPaul Cercueil
The DDC error IRQs will fire on the IT6610 every time the FIFO is empty, which is not very helpful. To resolve this, we can simply disable them, and handle DDC errors in it66121_wait_ddc_ready(). Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214125821.12489-7-paul@crapouillou.net
2022-12-16drm: bridge: it66121: Fix wait for DDC readyPaul Cercueil
The function it66121_wait_ddc_ready() would previously read the status register until "true", which means it never actually polled anything and would just read the register once. Now, it will properly wait until the DDC hardware is ready or until it reported an error. The 'busy' variable was also renamed to 'error' since these bits are set on error and not when the DDC hardware is busy. Since the DDC ready function is now working properly, the msleep(20) can be removed. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214125821.12489-6-paul@crapouillou.net
2022-12-16drm: bridge: it66121: Write AVI infoframe with regmap_bulk_write()Paul Cercueil
Since all AVI infoframe registers are contiguous in the address space, the AVI infoframe can be written in one go with regmap_bulk_write(). Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214125821.12489-5-paul@crapouillou.net
2022-12-16drm: bridge: it66121: Use regmap_noinc_read()Paul Cercueil
Use regmap_noinc_read() instead of reading the data from the DDC FIFO one byte at a time. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214125821.12489-4-paul@crapouillou.net
2022-12-16drm: bridge: it66121: Use devm_regulator_bulk_get_enable()Paul Cercueil
Simplify the code of the driver by using devm_regulator_bulk_get_enable(), which will handle powering up the regulators, and disabling them on probe error or module removal. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214125821.12489-3-paul@crapouillou.net
2022-12-16dt-bindings: display: bridge: it66121: Add compatible string for IT6610Paul Cercueil
Add a new ite,it6610 compatible string to the IT66121 binding documentation, since the two chips are very similar. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221214125821.12489-2-paul@crapouillou.net
2022-12-15drm/bridge: add it6505 driver to read data-lanes and link-frequencies from dtallen chen
Add driver to read data-lanes and link-frequencies from dt property to restrict output bandwidth. Signed-off-by: allen chen <allen.chen@ite.com.tw> Signed-off-by: Pin-yen Lin <treapking@chromium.org> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221103091243.96036-3-allen.chen@ite.com.tw Link: https://patchwork.freedesktop.org/patch/msgid/20221103091243.96036-2-allen.chen@ite.com.tw Link: https://patchwork.freedesktop.org/patch/msgid/20221103091243.96036-3-allen.chen@ite.com.tw
2022-12-15dt-bindings: it6505: add properties to restrict output bandwidthallen chen
Currently there are no "upstream" users. So, no existing users to break. Add properties to restrict dp output data-lanes and clock. Signed-off-by: Pin-Yen Lin <treapking@chromium.org> Signed-off-by: allen Chen <allen.chen@ite.com.tw> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221103091243.96036-2-allen.chen@ite.com.tw
2022-12-15drm/bridge: it6505: Add caching for EDIDPin-yen Lin
Add caching when EDID is read, and invalidate the cache until the bridge detects HPD low or sink count changes on HPD_IRQ. It takes 1.2s for IT6505 bridge to read a 3-block EDID, and skipping one EDID read would be a notable difference on user experience. Signed-off-by: Pin-yen Lin <treapking@chromium.org> Reviewed-by: Robert Foss <robert.foss@linaro.org> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221115112720.911158-1-treapking@chromium.org
2022-12-15drm/bridge: lt9611: Fix PLL being unable to lockRobert Foss
This fixes PLL being unable to lock, and is derived from an equivalent downstream commit. Available LT9611 documentation does not list this register, neither does LT9611UXC (which is a different chip). This commit has been confirmed to fix HDMI output on DragonBoard 845c. Suggested-by: Amit Pundir <amit.pundir@linaro.org> Reviewed-by: Amit Pundir <amit.pundir@linaro.org> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221213150304.4189760-1-robert.foss@linaro.org
2022-12-15drm/vc4: dsi: Remove entry to ULPS from vc4_dsi post_disableDave Stevenson
Post_disable was sending the D-PHY sequence to put any device into ULPS suspend mode, and then cutting power to the DSI block. The power-on reset state of the DSI block is for DSI to be in an operational state, not ULPS, so it then never sent the sequence for exiting ULPS. Any attached device that didn't have an external reset therefore remained in ULPS / standby, and didn't function. Use of ULPS isn't well specified in DRM, therefore remove entering it to avoid the above situation. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-dsi-bridge-v1-6-8f68ee0b0adb@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2022-12-15drm/vc4: dsi: Convert to using a bridge instead of encoderDave Stevenson
Remove the encoder functions, and create a bridge attached to this dumb encoder which implements the same functionality. As a bridge has state which an encoder doesn't, we need to add the state management functions as well. As there is no bridge atomic_mode_set, move the initialisation code that was in mode_set into _pre_enable. The code to actually enable and disable sending video are split from the general control into _enable and _disable. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-dsi-bridge-v1-5-8f68ee0b0adb@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2022-12-15drm/vc4: dsi: Convert to use atomic operationsDave Stevenson
The atomic calls are preferred as the non-atomic ones are deprecated. In preparation for conversion to a bridge, switch to the atomic calls. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-dsi-bridge-v1-4-8f68ee0b0adb@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2022-12-15drm/vc4: dsi: Remove splitting the bridge chain from the driverDave Stevenson
Splitting the bridge chain fails for atomic bridges as the framework can't add the relevant state in drm_atomic_add_encoder_bridges. The chain was split because we needed to power up before calling pre_enable, but that is now done in mode_set, and will move into the framework. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-dsi-bridge-v1-3-8f68ee0b0adb@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2022-12-15drm/vc4: dsi: Move initialisation to encoder_mode_setDave Stevenson
Breaking the bridge chain does not work for atomic bridges/panels and generally causes issues. We need to initialise the DSI host before the bridge pre_enables are called, so move that to encoder_mode_set in the same way that dw-mipi-dsi does. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-dsi-bridge-v1-2-8f68ee0b0adb@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2022-12-15drm/vc4: dsi: Rename bridge to out_bridgeDave Stevenson
In preparation for converting the encoder to being a bridge, rename the variable holding the next bridge in the chain to out_bridge, so that our bridge can be called bridge. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-dsi-bridge-v1-1-8f68ee0b0adb@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2022-12-15drm/vc4: Improve the KUnit documentationMaxime Ripard
The command-line can be expressed using a code-block, and we were missing which architectures were available. Suggested-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Maíra Canal <mcanal@igalia.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20221208094727.2848310-1-maxime@cerno.tech
2022-12-14drm/bridge: it6505: Guard bridge power in IRQ handlerPin-yen Lin
Add a pair of pm_runtime_get_if_in_use and pm_runtime_put_sync in the interrupt handler to make sure the bridge won't be powered off during the interrupt handlings. Also remove the irq_lock mutex because it's not guarding anything now. Fixes: ab28896f1a83 ("drm/bridge: it6505: Improve synchronization between extcon subsystem") Signed-off-by: Pin-yen Lin <treapking@chromium.org> Reviewed-by: Robert Foss <robert.foss@linaro.org> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221109095227.3320919-1-treapking@chromium.org
2022-12-14dt-bindings: display: panel: mipi-dbi-spi: Add io-supplyOtto Pflüger
Add documentation for the new io-supply property, which specifies the regulator for the I/O voltage supply on platforms where the panel panel power and I/O supplies are separate. Signed-off-by: Otto Pflüger <otto.pflueger@abscue.de> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221201160245.2093816-4-otto.pflueger@abscue.de
2022-12-14drm/tiny: panel-mipi-dbi: Read I/O supply from DTOtto Pflüger
To support platforms with a separate I/O voltage supply, set the new io_regulator property along with the regulator property of the DBI device. Read the I/O supply from a new "io-supply" device tree property. Signed-off-by: Otto Pflüger <otto.pflueger@abscue.de> Reviewed-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20221201160245.2093816-3-otto.pflueger@abscue.de
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-28 18:43:41 +0000