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Now a panel_bridge is automatically created for every drm_panel and the
panel-bridge API is just a deprecated wrapper to access it.
Update and simplify the code by just getting a reference to the
already-existing bridge using of_drm_get_bridge_by_endpoint().
As of_drm_get_bridge_by_endpoint() returns a refcounted bridge, take care
of putting the bridge reference when not used anymore.
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260916-drm-bridge-every-panel-v3-16-83afb4f1a707@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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Now a panel_bridge is automatically created for every drm_panel and the
panel-bridge API is just a deprecated wrapper to access it.
Update and simplify the code by just getting a reference to the
already-existing bridge using of_drm_get_bridge_by_endpoint().
As of_drm_get_bridge_by_endpoint() returns a refcounted bridge, take care
of putting the bridge reference when not used anymore.
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260916-drm-bridge-every-panel-v3-15-83afb4f1a707@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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Now a panel_bridge is automatically created for every drm_panel and the
panel-bridge API is just a deprecated wrapper to access it.
Update and simplify the code by just getting a reference to the
already-existing bridge using of_drm_find_and_get_bridge().
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260916-drm-bridge-every-panel-v3-14-83afb4f1a707@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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Now a panel_bridge is automatically created for every drm_panel and the
panel-bridge API is just a deprecated wrapper to access it.
Update and simplify the code by just getting a reference to the
already-existing bridge using of_drm_find_and_get_bridge().
And since of_drm_find_and_get_bridge() returns a refcounted bridge, take
care of putting the bridge reference by using bridge->next_bridge.
Reviewed-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260916-drm-bridge-every-panel-v3-13-83afb4f1a707@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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Now a panel_bridge is automatically created for every drm_panel and the
panel-bridge API is just a deprecated wrapper to access it.
Update and simplify the code by just getting a reference to the
already-existing bridge using of_drm_get_bridge_by_endpoint().
As of_drm_get_bridge_by_endpoint() returns a refcounted bridge, take care
of putting the bridge reference by using bridge->next_bridge.
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260916-drm-bridge-every-panel-v3-9-83afb4f1a707@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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We want to move drm_panel.o from the main drm module to a new drm_panel
module, but there is one function in the drm module that calls into
drm_panel.c code:
drm_of_find_panel_or_bridge() (drm_of.c, drm module)
-> calls of_drm_find_panel (drm_panel.c, future drm_panel module)
Avoid this issue by moving drm_of_find_panel_or_bridge() to drm_panel.c.
Update Kconfig symbols of drivers calling drm_of_find_panel_or_bridge() to
select DRM_PANEL when this is not done already.
No functional changes, just moving code around.
Suggested-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260916-drm-bridge-every-panel-v3-1-83afb4f1a707@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver uses devm_drm_of_get_bridge(), which is enabled by
DRM_PANEL_BRIDGE.
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Suggested-by: sashiko-bot@kernel.org
Link: https://lore.kernel.org/all/20260825103234.3F2B71F000E9@smtp.kernel.org/
Reviewed-by: Paul Cercueil <paul.cercueil@bootlin.com>
Link: https://patch.msgid.link/20260915-drm-bridge-drm_panel-cleanup-v4-9-30401d9406f3@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver uses drm_panel_bridge_add_typed() and
drm_panel_bridge_remove(), which are enabled by DRM_PANEL_BRIDGE.
Leave the 'select DRM_PANEL' because it is needed for drm_panel_put() and
drm_panel_enable() which the driver uses.
Cc: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Paul Cercueil <paul.cercueil@bootlin.com>
Link: https://patch.msgid.link/20260915-drm-bridge-drm_panel-cleanup-v4-8-30401d9406f3@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver uses drm_panel_bridge_add_typed() and
drm_panel_bridge_remove(), which are enabled by DRM_PANEL_BRIDGE.
Leave the 'select DRM_PANEL' because it is needed for drm_panel_put() which
the driver uses.
Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Paul Cercueil <paul.cercueil@bootlin.com>
Link: https://patch.msgid.link/20260915-drm-bridge-drm_panel-cleanup-v4-7-30401d9406f3@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver uses devm_drm_panel_bridge_add(), which is enabled by
DRM_PANEL_BRIDGE.
Leave the 'select DRM_PANEL' because it is needed for drm_panel_put() which
the driver uses.
Cc: Maoyi Xie <maoyixie.tju@gmail.com>
Cc: Andy Yan <andy.yan@rock-chips.com>
Cc: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Reviewed-by: Paul Cercueil <paul.cercueil@bootlin.com>
Link: https://patch.msgid.link/20260915-drm-bridge-drm_panel-cleanup-v4-6-30401d9406f3@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver does not use the drm_panel APIs at all, so no need to select
DRM_PANEL.
But it uses devm_drm_of_get_bridge(), which is enabled by DRM_PANEL_BRIDGE.
Cc: Tony Lindgren <tony@atomide.com>
Cc: Michael Walle <mwalle@kernel.org>
Cc: Vinay Simha BN <simhavcs@gmail.com>
Reviewed-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Paul Cercueil <paul.cercueil@bootlin.com>
Link: https://patch.msgid.link/20260915-drm-bridge-drm_panel-cleanup-v4-5-30401d9406f3@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver does not use the drm_panel APIs at all, so no need to select
DRM_PANEL.
But it uses devm_drm_of_get_bridge(), which is enabled by DRM_PANEL_BRIDGE.
Cc: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Paul Cercueil <paul.cercueil@bootlin.com>
Link: https://patch.msgid.link/20260915-drm-bridge-drm_panel-cleanup-v4-4-30401d9406f3@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver does not use the drm_panel APIs at all, so no need to select
DRM_PANEL.
But it uses devm_drm_of_get_bridge(), which is enabled by DRM_PANEL_BRIDGE.
Cc: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Paul Cercueil <paul.cercueil@bootlin.com>
Link: https://patch.msgid.link/20260915-drm-bridge-drm_panel-cleanup-v4-3-30401d9406f3@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver does not use the drm_panel APIs at all, so no need to select
DRM_PANEL.
But it uses devm_drm_of_get_bridge(), which is enabled by DRM_PANEL_BRIDGE.
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Christopher Vollo <chris@renewoutreach.org>
Reviewed-by: Paul Cercueil <paul.cercueil@bootlin.com>
Link: https://patch.msgid.link/20260915-drm-bridge-drm_panel-cleanup-v4-2-30401d9406f3@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver does not use the drm_panel APIs at all, so no need to select
DRM_PANEL.
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Paul Cercueil <paul.cercueil@bootlin.com>
Link: https://patch.msgid.link/20260915-drm-bridge-drm_panel-cleanup-v4-1-30401d9406f3@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver does not use the drm_panel APIs at all, so no need to select
DRM_PANEL.
But it uses devm_drm_of_get_bridge(), which is enabled by DRM_PANEL_BRIDGE.
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Jitao Shi <jitao.shi@mediatek.com>
Cc: CK Hu <ck.hu@mediatek.com>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://patch.msgid.link/20260831-drm-bridge-drm_panel-cleanup-v3-8-50efd8168b3e@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver uses the drm_panel_bridge API and not the drm_panel API so it
should select DRM_PANEL_BRIDGE and not DRM_PANEL.
Cc: Marek Vasut <marex@denx.de>
Cc: Sudarshan Shetty <tessolveupstream@gmail.com>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Herve Codina <herve.codina@bootlin.com>
Cc: Esben Haabendal <esben@geanix.com>
Reviewed-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Esben Haabendal <esben@geanix.com>
Link: https://patch.msgid.link/20260831-drm-bridge-drm_panel-cleanup-v3-5-50efd8168b3e@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver does not use the drm_panel APIs at all, so no need to select
DRM_PANEL.
But it uses devm_drm_of_get_bridge(), which is enabled by DRM_PANEL_BRIDGE.
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Franz Schnyder <franz.schnyder@toradex.com>
Cc: John Ripple <john.ripple@keysight.com>
Cc: Michael Walle <mwalle@kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://patch.msgid.link/20260831-drm-bridge-drm_panel-cleanup-v3-4-50efd8168b3e@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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This driver does not use the drm_panel APIs at all, so no need to select
DRM_PANEL.
Cc: Peter Senna Tschudin <peter.senna@gmail.com>
Cc: Martyn Welch <martyn.welch@collabora.co.uk>
Cc: Andy Yan <andyshrk@163.com>
Reviewed-by: Ian Ray <ian.ray@gehealthcare.com>
Link: https://patch.msgid.link/20260831-drm-bridge-drm_panel-cleanup-v3-1-50efd8168b3e@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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Instead of open coding the HDMI AVI Infoframes buffer management, use the
helpers provided by the HDMI connector framework.
Also, add callbacks to implement HDMI Vendor Specific Infoframe and Audio
InfoFrame support. The driver was not sending these before, but they are
required when using the HDMI helpers.
These were implemented following the IT66121 Programming Guide.
Suggested-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260523-it66121-fix-dvi-mode-v5-v5-1-33b4468162f9@redhat.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
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multi-platform use
As suggested by Dmitry, the DRM legacy bridge driver can be pulled
out of imx/ subdir for multi-platform use. The driver is also renamed
to make it more generic and suitable for platforms other than i.MX.
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Heiko Stuebner <heiko@sntech.de> # rk3588
Link: https://patch.msgid.link/20260409065301.446670-3-damon.ding@rock-chips.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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CRC8 needs to be enabled for lt8713sx to build:
ld.lld-22: error: undefined symbol: crc8_populate_msb
>>> referenced by lontium-lt8713sx.c
>>> drivers/gpu/drm/bridge/lontium-lt8713sx.o:(lt8713sx_probe) in archive vmlinux.a
Fixes: 4037c6adc1f9 ("drm/bridge: add support for lontium lt8713sx bridge driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://patch.msgid.link/20260318105130.1969966-1-arnd@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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The lt8713sx is a Type-C/DP1.4 to DP1.4/HDMI2.0 converter,
with three configurable DP1.4/HDMI2.0/DP++ output interfaces and
audio output interface.
Driver is required for firmware upgrade and enabling the bridge chip.
Co-developed-by: Prahlad Valluru <vvalluru@qti.qualcomm.com>
Signed-off-by: Prahlad Valluru <vvalluru@qti.qualcomm.com>
Signed-off-by: Vishnu Saini <vishnu.saini@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Cc: Simon Zhu <xmzhu@lontium.corp-partner.google.com>
Link: https://patch.msgid.link/20260303-lt8713sx-bridge-driver-v5-2-6cc2a855aafa@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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T-Head TH1520 SoC contains a Synopsys DesignWare HDMI controller (paired
with DesignWare HDMI TX PHY Gen2) that takes the "DP" output from the
display controller.
Add a driver for this controller utilizing the common DesignWare HDMI
code in the kernel.
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Signed-off-by: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Tested-by: Han Gao <gaohan@iscas.ac.cn>
Tested-by: Michal Wilczynski <m.wilczynski@samsung.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260129023922.1527729-6-zhengxingda@iscas.ac.cn
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Convert it to drm bridge driver, it will be convenient for us to
migrate the connector part to the display driver later.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20251016083843.76675-2-andyshrk@163.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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Instead of using the "sha1" crypto_shash, simply call the sha1() library
function. This is simpler and faster.
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://patch.msgid.link/20250821175613.14717-1-ebiggers@kernel.org
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
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Fix
aarch64-linux-gnu-ld: drivers/gpu/drm/bridge/ite-it6505.o: in function `it6505_i2c_probe':
ite-it6505.c:(.text+0x754): undefined reference to `__devm_regmap_init_i2c'
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Fixes: b5c84a9edcd4 ("drm/bridge: add it6505 driver")
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://patch.msgid.link/20250610235825.3113075-1-olvaffe@gmail.com
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
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Waveshare touchscreen consists of a DPI panel and a driver board.
The waveshare driver board consists of ICN6211 and a MCU to
convert DSI to DPI and control the backlight.
This driver treats the MCU and ICN6211 board as a whole unit.
It can support all resolution waveshare DSI2DPI based panel,
the timing table should come from 'panel-dpi' panel in the device tree.
Signed-off-by: Joseph Guo <qijian.guo@nxp.com>
Suggested-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250806-waveshare-v3-3-fd28e01f064f@nxp.com
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SSD2825 is a cost-effective MIPI Bridge Chip solution targeting mainly
smartphones. It can convert 24bit RGB interface into 4-lane MIPI-DSI
interface to drive display modules of up to 800 x 1366, while supporting
AMOLED, a-si LCD or LTPS panel technologies for smartphone applications.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250730055424.6718-3-clamor95@gmail.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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The aux bridge uses devm_drm_of_get_bridge() from the panel bridge (and
correctly selects DRM_PANEL_BRIDGE). However panel bridge is not a
separate module, it is compiled into the drm_kms_helper.o. Select
DRM_KMS_HELPER too to express this dependency.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250411-aux-select-kms-v1-1-c4276f905a56@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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This fails to build without the KMS helper functions:
x86_64-linux-ld: drivers/gpu/drm/bridge/tda998x_drv.o: in function `tda998x_detect_work':
tda998x_drv.c:(.text+0x4e6): undefined reference to `drm_kms_helper_hotplug_event'
x86_64-linux-ld: drivers/gpu/drm/bridge/tda998x_drv.o: in function `tda998x_bind':
tda998x_drv.c:(.text.unlikely+0x33): undefined reference to `drm_simple_encoder_init'
x86_64-linux-ld: drivers/gpu/drm/bridge/tda998x_drv.o:(.rodata+0x584): undefined reference to `drm_atomic_helper_connector_reset'
x86_64-linux-ld: drivers/gpu/drm/bridge/tda998x_drv.o:(.rodata+0x590): undefined reference to `drm_helper_probe_single_connector_modes'
x86_64-linux-ld: drivers/gpu/drm/bridge/tda998x_drv.o:(.rodata+0x5a4): undefined reference to `drm_atomic_helper_connector_duplicate_state'
x86_64-linux-ld: drivers/gpu/drm/bridge/tda998x_drv.o:(.rodata+0x5a8): undefined reference to `drm_atomic_helper_connector_destroy_state'
Select the missing symbol and fix up the broken whitespace.
Fixes: 325ba852d148 ("drm/i2c: move TDA998x driver under drivers/gpu/drm/bridge")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250324210824.3094660-1-arnd@kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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TDA998x is the HDMI bridge driver, incorporating drm_connector and
optional drm_encoder (created via the component bind API by the TICLDC
and HDLCD drivers). Thus it should be residing together with the other
DRM bridge drivers under drivers/gpu/drm/bridge/.
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250113-drm-move-tda998x-v3-3-214e0682a5e4@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
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Add basic HDMI video output support. Currently, only RGB888 output
pixel format is supported. At the LVDS input side, the driver
supports single LVDS link and dual LVDS links with "jeida-24" LVDS
mapping.
Product link:
https://www.ite.com.tw/en/product/cate1/IT6263
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Tested-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20241104032806.611890-11-victor.liu@nxp.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
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Use new HDMI Connector helpers in the Lontium LT9611 bridge driver.
Program InfoFrames using the helper's callbacks. Also use TMDS char rate
validation callback to filter out modes, instead of hardcoding 4k@30.
The Audio InfoFrame isn't yet handled by these helpers, it requires
additional drm_bridge interface changes.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240615-drm-bridge-hdmi-connector-v1-1-d59fc7865ab2@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
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Backmerging to get fixes from v6.12-rc7.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
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TDP158 is an AC-coupled DVI / HDMI to TMDS level shifting Redriver.
It supports DVI 1.0, HDMI 1.4b and 2.0b.
It supports 4 TMDS channels, HPD, and a DDC interface.
It supports dual power supply rails (1.1V on VDD, 3.3V on VCC)
for power reduction. Several methods of power management are
implemented to reduce overall power consumption.
It supports fixed receiver EQ gain using I2C or pin strap to
compensate for different lengths input cable or board traces.
Features
- AC-coupled TMDS or DisplayPort dual-mode physical layer input
to HDMI 2.0b TMDS physical layer output supporting up to 6Gbps
data rate, compatible with HDMI 2.0b electrical parameters
- DisplayPort dual-mode standard version 1.1
- Programmable fixed receiver equalizer up to 15.5dB
- Global or independent high speed lane control, pre-emphasis
and transmit swing, and slew rate control
- I2C or pin strap programmable
- Configurable as a DisplayPort redriver through I2C
- Full lane swap on main lanes
- Low power consumption (200 mW at 6Gbps, 8 mW in shutdown)
https://www.ti.com/lit/ds/symlink/tdp158.pdf
On our board, I2C_EN is pulled high.
Thus, this code defines a module_i2c_driver.
The default settings work fine for our use-case.
So this basic driver doesn't need to tweak any I2C registers.
Signed-off-by: Marc Gonzalez <mgonzalez@freebox.fr>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240812-tdp158-v5-2-78684a84ec23@freebox.fr
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drm_bridge_connector is a "leaf" driver, belonging to the display
helper, rather than the "CRTC" drm_kms_helper module. Move the driver
to the drm/display and add necessary Kconfig selection clauses.
Suggested-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240903-drm-bridge-connector-fix-hdmi-reset-v5-2-daebde6d9857@linaro.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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This reverts commit e075e496f516bf92bc0cbaf94d64e8d4a6b58321, as helper
code should always be selected by the driver that needs it, for the
convenience of the final user configuring a kernel.
The user who configures a kernel should not need to know which helpers
are needed for the driver he is interested in. Making a driver depend
on helper code means that the user needs to know which helpers to enable
first, which is very user-unfriendly.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1ba76cc4d96a8afefff5d1bc42fb1e1329c5da68.1713780345.git.geert+renesas@glider.be
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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This reverts commit 4d15125d7fe637f401e64e33c99513adf6586fdd, as helper
code should always be selected by the driver that needs it, for the
convenience of the final user configuring a kernel.
The user who configures a kernel should not need to know which helpers
are needed for the driver he is interested in. Making a driver depend
on helper code means that the user needs to know which helpers to enable
first, which is very user-unfriendly.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patchwork.freedesktop.org/patch/msgid/79824fec01eb9ab0673b9409f9b39cc8b5cc338d.1713780345.git.geert+renesas@glider.be
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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This reverts commit 0323287de87d7e6e9c22c57d7440aa353a2298d0, as helper
code should always be selected by the driver that needs it, for the
convenience of the final user configuring a kernel.
The user who configures a kernel should not need to know which helpers
are needed for the driver he is interested in. Making a driver depend
on helper code means that the user needs to know which helpers to enable
first, which is very user-unfriendly.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patchwork.freedesktop.org/patch/msgid/89ac456805746b6d0c888f10c5120b11aacd3319.1713780345.git.geert+renesas@glider.be
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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This reverts commit 3166e7e6d935caaef07605a5c90773fbf9ffeaf4, as helper
code should always be selected by the driver that needs it, for the
convenience of the final user configuring a kernel.
The user who configures a kernel should not need to know which helpers
are needed for the driver he is interested in. Making a driver depend
on helper code means that the user needs to know which helpers to enable
first, which is very user-unfriendly.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patchwork.freedesktop.org/patch/msgid/a40e70a0abd3d841c23c107d452a43fdd70ef37a.1713780345.git.geert+renesas@glider.be
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Add a new LVDS controller driver for sam9x7 which does the following:
- Prepares and enables the LVDS Peripheral clock
- Defines its connector type as DRM_MODE_CONNECTOR_LVDS and adds itself
to the global bridge list.
- Identifies its output endpoint as panel and adds it to the encoder
display pipeline
- Enables the LVDS serializer
Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Acked-by: Hari Prasath Gujulan Elango <hari.prasathge@microchip.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240421011050.43265-3-dharma.b@microchip.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240421011050.43265-3-dharma.b@microchip.com
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The IT6505 bridge Kconfig symbol selects a Kconfig symbol that doesn't
exist. Remove it.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/20240327-kms-kconfig-helpers-v3-13-eafee11b84b3@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Most of our helpers have relied on being selected so far through
Kconfig, but that creates issues when we have multiple layers of helpers
with some depending on others.
Indeed, select doesn't select a dependency's dependencies, and thus
isn't super intuitive. Depends on however doesn't have that limitation,
so we can just switch all the drivers that were selecting
DRM_DISPLAY_HDCP_HELPER to depend on it.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/20240327-kms-kconfig-helpers-v3-11-eafee11b84b3@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Most of our helpers have relied on being selected so far through
Kconfig, but that creates issues when we have multiple layers of helpers
with some depending on others.
Indeed, select doesn't select a dependency's dependencies, and thus
isn't super intuitive. Depends on however doesn't have that limitation,
so we can just switch all the drivers that were selecting
DRM_DISPLAY_DP_HELPER to depend on it.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/20240327-kms-kconfig-helpers-v3-10-eafee11b84b3@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Most of our helpers have relied on being selected so far through
Kconfig, but that creates issues when we have multiple layers of helpers
with some depending on others.
Indeed, select doesn't select a dependency's dependencies, and thus
isn't super intuitive. Depends on however doesn't have that limitation,
so we can just switch all the drivers that were selecting
DRM_DISPLAY_DP_AUX_BUS to depend on it.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/20240327-kms-kconfig-helpers-v3-9-eafee11b84b3@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Most of our helpers have relied on being selected so far through
Kconfig, but that creates issues when we have multiple layers of helpers
with some depending on others.
Indeed, select doesn't select a dependency's dependencies, and thus
isn't super intuitive. Depends on however doesn't have that limitation,
so we can just switch all the drivers that were selecting
DRM_DISPLAY_HELPER to depend on it.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/20240327-kms-kconfig-helpers-v3-8-eafee11b84b3@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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While most display helpers Kconfig symbols have the DRM_DISPLAY prefix,
the DisplayPort AUX bus implementation uses DRM_DP_AUX_BUS.
Since the number of users is limited and it's a selected symbol, we can
easily rename it to make it consistent.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20240327-kms-kconfig-helpers-v3-1-eafee11b84b3@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Linux 6.7-rc5
Alex requested this for some amdkfd work relying on the symbols exports.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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A dependency on this feature was recently introduced:
x86_64-linux-ld: vmlinux.o: in function `tc358768_bridge_pre_enable':
tc358768.c:(.text+0xbe3dae): undefined reference to `drm_display_mode_to_videomode'
Make sure this is always enabled.
Fixes: e5fb21678136 ("drm/bridge: tc358768: Use struct videomode")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231204072814.968816-1-arnd@kernel.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231204072814.968816-1-arnd@kernel.org
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