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path: root/drivers/gpu/drm/bridge/panel.c
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2 daysMerge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernelLinus Torvalds
Pull drm updates from Dave Airlie: "Highlights: - Intel xe enable Panthor Lake, started adding WildCat Lake - amdgpu has a bunch of reset improvments along with the usual IP updates - msm got VM_BIND support which is important for vulkan sparse memory - more drm_panic users - gpusvm common code to handle a bunch of core SVM work outside drivers. Detail summary: Changes outside drm subdirectory: - 'shrink_shmem_memory()' for better shmem/hibernate interaction - Rust support infrastructure: - make ETIMEDOUT available - add size constants up to SZ_2G - add DMA coherent allocation bindings - mtd driver for Intel GPU non-volatile storage - i2c designware quirk for Intel xe core: - atomic helpers: tune enable/disable sequences - add task info to wedge API - refactor EDID quirks - connector: move HDR sink to drm_display_info - fourcc: half-float and 32-bit float formats - mode_config: pass format info to simplify dma-buf: - heaps: Give CMA heap a stable name ci: - add device tree validation and kunit displayport: - change AUX DPCD access probe address - add quirk for DPCD probe - add panel replay definitions - backlight control helpers fbdev: - make CONFIG_FIRMWARE_EDID available on all arches fence: - fix UAF issues format-helper: - improve tests gpusvm: - introduce devmem only flag for allocation - add timeslicing support to GPU SVM ttm: - improve eviction sched: - tracing improvements - kunit improvements - memory leak fixes - reset handling improvements color mgmt: - add hardware gamma LUT handling helpers bridge: - add destroy hook - switch to reference counted drm_bridge allocations - tc358767: convert to devm_drm_bridge_alloc - improve CEC handling panel: - switch to reference counter drm_panel allocations - fwnode panel lookup - Huiling hl055fhv028c support - Raspberry Pi 7" 720x1280 support - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK - simple: AUO P238HAN01 - st7701: Winstar wf40eswaa6mnn0 - visionox: rm69299-shift - Renesas R61307, Renesas R69328 support - DJN HX83112B hdmi: - add CEC handling - YUV420 output support xe: - WildCat Lake support - Enable PanthorLake by default - mark BMG as SRIOV capable - update firmware recommendations - Expose media OA units - aux-bux support for non-volatile memory - MTD intel-dg driver for non-volatile memory - Expose fan control and voltage regulator in sysfs - restructure migration for multi-device - Restore GuC submit UAF fix - make GEM shrinker drm managed - SRIOV VF Post-migration recovery of GGTT nodes - W/A additions/reworks - Prefetch support for svm ranges - Don't allocate managed BO for each policy change - HWMON fixes for BMG - Create LRC BO without VM - PCI ID updates - make SLPC debugfs files optional - rework eviction rejection of bound external BOs - consolidate PAT programming logic for pre/post Xe2 - init changes for flicker-free boot - Enable GuC Dynamic Inhibit Context switch i915: - drm_panic support for i915/xe - initial flip queue off by default for LNL/PNL - Wildcat Lake Display support - Support for DSC fractional link bpp - Support for simultaneous Panel Replay and Adaptive sync - Support for PTL+ double buffer LUT - initial PIPEDMC event handling - drm_panel_follower support - DPLL interface renames - allocate struct intel_display dynamically - flip queue preperation - abstract DRAM detection better - avoid GuC scheduling stalls - remove DG1 force probe requirement - fix MEI interrupt handler on RT kernels - use backlight control helpers for eDP - more shared display code refactoring amdgpu: - add userq slot to INFO ioctl - SR-IOV hibernation support - Suspend improvements - Backlight improvements - Use scaling for non-native eDP modes - cleaner shader updates for GC 9.x - Remove fence slab - SDMA fw checks for userq support - RAS updates - DMCUB updates - DP tunneling fixes - Display idle D3 support - Per queue reset improvements - initial smartmux support amdkfd: - enable KFD on loongarch - mtype fix for ext coherent system memory radeon: - CS validation additional GL extensions - drop console lock during suspend/resume - bump driver version msm: - VM BIND support - CI: infrastructure updates - UBWC single source of truth - decouple GPU and KMS support - DP: rework I/O accessors - DPU: SM8750 support - DSI: SM8750 support - GPU: X1-45 support and speedbin support for X1-85 - MDSS: SM8750 support nova: - register! macro improvements - DMA object abstraction - VBIOS parser + fwsec lookup - sysmem flush page support - falcon: generic falcon boot code and HAL - FWSEC-FRTS: fb setup and load/execute ivpu: - Add Wildcat Lake support - Add turbo flag ast: - improve hardware generations implementation imx: - IMX8qxq Display Controller support lima: - Rockchip RK3528 GPU support nouveau: - fence handling cleanup panfrost: - MT8370 support - bo labeling - 64-bit register access qaic: - add RAS support rockchip: - convert inno_hdmi to a bridge rz-du: - add RZ/V2H(P) support - MIPI-DSI DCS support sitronix: - ST7567 support sun4i: - add H616 support tidss: - add TI AM62L support - AM65x OLDI bridge support bochs: - drm panic support vkms: - YUV and R* format support - use faux device vmwgfx: - fence improvements hyperv: - move out of simple - add drm_panic support" * tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel: (1479 commits) drm/tidss: oldi: convert to devm_drm_bridge_alloc() API drm/tidss: encoder: convert to devm_drm_bridge_alloc() drm/amdgpu: move reset support type checks into the caller drm/amdgpu/sdma7: re-emit unprocessed state on ring reset drm/amdgpu/sdma6: re-emit unprocessed state on ring reset drm/amdgpu/sdma5.2: re-emit unprocessed state on ring reset drm/amdgpu/sdma5: re-emit unprocessed state on ring reset drm/amdgpu/gfx12: re-emit unprocessed state on ring reset drm/amdgpu/gfx11: re-emit unprocessed state on ring reset drm/amdgpu/gfx10: re-emit unprocessed state on ring reset drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset drm/amdgpu/gfx9: re-emit unprocessed state on kcq reset drm/amdgpu: Add WARN_ON to the resource clear function drm/amd/pm: Use cached metrics data on SMUv13.0.6 drm/amd/pm: Use cached data for min/max clocks gpu: nova-core: fix bounds check in PmuLookupTableEntry::new drm/amdgpu: Replace HQD terminology with slots naming drm/amdgpu: Add user queue instance count in HW IP info drm/amd/amdgpu: Add helper functions for isp buffers drm/amd/amdgpu: Initialize swnode for ISP MFD device ...
2025-06-30drm/bridge: panel: move prepare_prev_first handling to ↵Dmitry Baryshkov
drm_panel_bridge_add_typed The commit 5ea6b1702781 ("drm/panel: Add prepare_prev_first flag to drm_panel") and commit 0974687a19c3 ("drm/bridge: panel: Set pre_enable_prev_first from drmm_panel_bridge_add") added handling of panel's prepare_prev_first to devm_panel_bridge_add() and drmm_panel_bridge_add(). However if the driver calls drm_panel_bridge_add_typed() directly, then the flag won't be handled and thus the drm_bridge.pre_enable_prev_first will not be set. Move prepare_prev_first handling to the drm_panel_bridge_add_typed() so that there is no way to miss the flag. Fixes: 5ea6b1702781 ("drm/panel: Add prepare_prev_first flag to drm_panel") Fixes: 0974687a19c3 ("drm/bridge: panel: Set pre_enable_prev_first from drmm_panel_bridge_add") Reported-by: Svyatoslav Ryhel <clamor95@gmail.com> Closes: https://lore.kernel.org/dri-devel/CAPVz0n3YZass3Bns1m0XrFxtAC0DKbEPiW6vXimQx97G243sXw@mail.gmail.com/ Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20250220-panel_prev_first-v1-1-b9e787825a1a@linaro.org
2025-06-16drm/bridge: Include <linux/export.h>Thomas Zimmermann
Fix compile-time warnings drivers/gpu/drm/bridge/analogix/analogix-i2c-dptx.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/analogix/analogix_dp_core.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/aux-bridge.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/aux-hpd-bridge.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/panel.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/samsung-dsim.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/synopsys/dw-hdmi.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/drm_bridge.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/drm_bridge_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Fixes: a934a57a42f6 ("scripts/misc-check: check missing #include <linux/export.h> when W=1") Reviewed-by: André Almeida <andrealmeid@igalia.com> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250612121633.229222-4-tzimmermann@suse.de
2025-05-21drm/bridge: panel: convert to devm_drm_bridge_alloc() APILuca Ceresoli
This is the new API for allocating DRM bridges. The devm lifetime management of this driver is peculiar. The underlying device for the panel_bridge is the panel, and the devm lifetime is tied the panel device (panel->dev). However the panel_bridge allocation is not performed by the panel driver, but rather by a separate entity (typically the previous bridge in the encoder chain). Thus when that separate entity is destroyed, the panel_bridge is not removed automatically by devm, so it is rather done explicitly by calling drm_panel_bridge_remove(). This is the function that does devm_kfree() the panel_bridge in current code, so update it as well to put the bridge reference instead. This is a temporary solution until the panel lifetime is reworked, which should make this workaround unnecessary, so add a comment to clarify that. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://lore.kernel.org/r/20250509-drm-bridge-convert-to-alloc-api-v3-21-b8bc1f16d7aa@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2025-03-20drm/bridge: Add encoder parameter to drm_bridge_funcs.attachMaxime Ripard
The drm_bridge structure contains an encoder pointer that is widely used by bridge drivers. This pattern is largely documented as deprecated in other KMS entities for atomic drivers. However, one of the main use of that pointer is done in attach to just call drm_bridge_attach on the next bridge to add it to the bridge list. While this dereferences the bridge->encoder pointer, it's effectively the same encoder the bridge was being attached to. We can make it more explicit by adding the encoder the bridge is attached to to the list of attach parameters. This also removes the need to dereference bridge->encoder in most drivers. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Douglas Anderson <dianders@chromium.org> Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250313-bridge-connector-v6-1-511c54a604fb@kernel.org Signed-off-by: Maxime Ripard <mripard@kernel.org>
2025-02-19drm/bridge: Pass full state to atomic_post_disableMaxime Ripard
It's pretty inconvenient to access the full atomic state from drm_bridges, so let's change the atomic_post_disable hook prototype to pass it directly. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-5-e71598f49c8f@kernel.org Signed-off-by: Maxime Ripard <mripard@kernel.org>
2025-02-19drm/bridge: Pass full state to atomic_disableMaxime Ripard
It's pretty inconvenient to access the full atomic state from drm_bridges, so let's change the atomic_disable hook prototype to pass it directly. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-4-e71598f49c8f@kernel.org Signed-off-by: Maxime Ripard <mripard@kernel.org>
2025-02-19drm/bridge: Pass full state to atomic_enableMaxime Ripard
It's pretty inconvenient to access the full atomic state from drm_bridges, so let's change the atomic_enable hook prototype to pass it directly. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-3-e71598f49c8f@kernel.org Signed-off-by: Maxime Ripard <mripard@kernel.org>
2025-02-19drm/bridge: Pass full state to atomic_pre_enableMaxime Ripard
It's pretty inconvenient to access the full atomic state from drm_bridges, so let's change the atomic_pre_enable hook prototype to pass it directly. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-2-e71598f49c8f@kernel.org Signed-off-by: Maxime Ripard <mripard@kernel.org>
2025-02-17drm/bridge: panel: drm_panel_bridge_remove: warn when called on non-panel bridgeLuca Ceresoli
This function is for panel_bridge instances only. The silent return when invoked on other bridges might hide actual errors, so avoid them to go unnoticed. Reviewed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20250214-drm-assorted-cleanups-v7-4-88ca5827d7af@bootlin.com
2025-02-17drm/bridge: panel: use drm_bridge_is_panel() instead of open codeLuca Ceresoli
drm_panel_bridge_remove() reads bridge->funcs to find out whether this is a panel bridge or another kind of bridge. drm_bridge_is_panel() is made exactly for that, so use it. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20250214-drm-assorted-cleanups-v7-3-88ca5827d7af@bootlin.com
2024-07-05Merge v6.10-rc6 into drm-nextDaniel Vetter
The exynos-next pull is based on a newer -rc than drm-next. hence backmerge first to make sure the unrelated conflicts we accumulated don't end up randomly in the exynos merge pull, but are separated out. Conflicts are all benign: Adjacent changes in amdgpu and fbdev-dma code, and cherry-pick conflict in xe. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2024-06-10drm/bridge/panel: Fix runtime warning on panel bridge releaseAdam Miotk
Device managed panel bridge wrappers are created by calling to drm_panel_bridge_add_typed() and registering a release handler for clean-up when the device gets unbound. Since the memory for this bridge is also managed and linked to the panel device, the release function should not try to free that memory. Moreover, the call to devm_kfree() inside drm_panel_bridge_remove() will fail in this case and emit a warning because the panel bridge resource is no longer on the device resources list (it has been removed from there before the call to release handlers). Fixes: 67022227ffb1 ("drm/bridge: Add a devm_ allocator for panel bridge.") Signed-off-by: Adam Miotk <adam.miotk@arm.com> Signed-off-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240610102739.139852-1-adam.miotk@arm.com
2024-05-13drm/bridge: panel: Remove a redundant check on existence of bridge->encoderSui Jingfeng
Because the existence of 'bridge->encoder' has already been checked before the panel_bridge_attach() function get called, and the drm_bridge_attach() will quit with a negative error code returned if it fails for some reasons. Hence, it is guaranteed that the .encoder member of the drm_bridge instance is not NULL when panel_bridge_attach() function get called. Remove the redundant checking codes "if (!bridge->encoder) { ... }". Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev> Signed-off-by: Robert Foss <rfoss@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240513153109.46786-5-sui.jingfeng@linux.dev
2024-04-25drm/print: drop include debugfs.h and include where neededJani Nikula
Surprisingly many places depend on debugfs.h to be included via drm_print.h. Fix them. v3: Also fix armada, ite-it6505, imagination, msm, sti, vc4, and xe v2: Also fix ivpu and vmwgfx Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240410141434.157908-1-jani.nikula@intel.com Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # drm/msm Acked-by: Matt Coster <matt.coster@imgtec.com> # drm/imagination Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Lucas De Marchi <lucas.demarchi@intel.com> Acked-by: Robert Foss <rfoss@kernel.org> #drm/bridge Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240422121011.4133236-1-jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-11-28Revert "drm/bridge: panel: Add a device link between drm device and panel ↵Linus Walleij
device" This reverts commit 199cf07ebd2b0d41185ac79b895547d45610b681. This patch creates bugs on devices where the DRM device is the ancestor of the panel devices. Attempts to fix this have failed because it leads to using device core functionality which is questionable. Reported-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/lkml/CACRpkdaGzXD6HbiX7mVUNJAJtMEPG00Pp6+nJ1P0JrfJ-ArMvQ@mail.gmail.com/T/ Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20231128-revert-panel-fix-v1-3-69bb05048dae@linaro.org Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20231128-revert-panel-fix-v1-3-69bb05048dae@linaro.org
2023-11-28Revert "drm/bridge: panel: Check device dependency before managing device link"Linus Walleij
This reverts commit 39d5b6a64ace77d0c11c398d272218df5f939abb. This patch was causing build errors by using an unexported function from the device core, which Greg questions the saneness in exporting. Link: https://lore.kernel.org/lkml/CACRpkdaGzXD6HbiX7mVUNJAJtMEPG00Pp6+nJ1P0JrfJ-ArMvQ@mail.gmail.com/T/ Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20231128-revert-panel-fix-v1-2-69bb05048dae@linaro.org Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20231128-revert-panel-fix-v1-2-69bb05048dae@linaro.org
2023-11-25drm/bridge: panel: Check device dependency before managing device linkLiu Ying
Some panel devices already depend on DRM device, like the panel in arch/arm/boot/dts/st/ste-ux500-samsung-skomer.dts, because DRM device is the ancestor of those panel devices. device_link_add() would fail by returning a NULL pointer for those panel devices because of the existing dependency. So, check the dependency by calling device_is_dependent() before adding or deleting device link between panel device and DRM device so that the link is managed only for independent panel devices. Fixes: 887878014534 ("drm/bridge: panel: Fix device link for DRM_BRIDGE_ATTACH_NO_CONNECTOR") Fixes: 199cf07ebd2b ("drm/bridge: panel: Add a device link between drm device and panel device") Reported-by: Linus Walleij <linus.walleij@linaro.org> Closes: https://lore.kernel.org/lkml/CACRpkdaGzXD6HbiX7mVUNJAJtMEPG00Pp6+nJ1P0JrfJ-ArMvQ@mail.gmail.com/T/ Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Liu Ying <victor.liu@nxp.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20231123032615.3760488-1-victor.liu@nxp.com
2023-09-20drm/bridge: panel: Fix device link for DRM_BRIDGE_ATTACH_NO_CONNECTORAngeloGioacchino Del Regno
When external bridges are attached with DRM_BRIDGE_ATTACH_NO_CONNECTOR, the panel bridge may also get the same flag, but in the .attach() callback for the panel bridge a device link is added only when this flag is not present; To make things worse, the .detach() callback tries to delete the device link unconditionally and without checking if it was created in the first place, crashing the kernel with a NULL pointer kernel panic upon calling panel_bridge_detach(). Fix that by moving the device_link_add() call before checking if the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag is present. Fixes: 199cf07ebd2b ("drm/bridge: panel: Add a device link between drm device and panel device") Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Liu Ying <victor.liu@nxp.com> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230920082727.57729-1-angelogioacchino.delregno@collabora.com
2023-09-06drm/bridge: Drop CONFIG_OF conditionals around of_node pointersBiju Das
Having conditional around the of_node pointers turns out to make driver code use ugly #ifdef and #if blocks. So drop the conditionals. Suggested-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230831080938.47454-4-biju.das.jz@bp.renesas.com
2023-08-14drm/bridge: panel: Add a device link between drm device and panel deviceLiu Ying
Add the device link when panel bridge is attached and delete the link when panel bridge is detached. The drm device is the consumer while the panel device is the supplier. This makes sure that the drm device suspends eariler and resumes later than the panel device, hence resolves problems where the order is reversed, like the problematic case mentioned in the below link. Link: https://lore.kernel.org/lkml/CAPDyKFr0XjrU_udKoUKQ_q8RWaUkyqL+8fV-7s1CTMqi7u3-Rg@mail.gmail.com/T/ Suggested-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Liu Ying <victor.liu@nxp.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230807061115.3244501-1-victor.liu@nxp.com
2023-03-20Merge remote-tracking branch 'drm/drm-next' into msm-nextRob Clark
Merge drm-next into msm-next to pick up external clk and PM dependencies for improved a6xx GPU reset sequence. Signed-off-by: Rob Clark <robdclark@chromium.org>
2023-03-13drm/bridge: add psr support for panel bridge callbacksVinod Polimera
This change will handle the psr entry exit cases in the panel bridge atomic callback functions. For example, the panel power should not turn off if the panel is entering psr. Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com> Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Patchwork: https://patchwork.freedesktop.org/patch/524721/ Link: https://lore.kernel.org/r/1677774797-31063-4-git-send-email-quic_vpolimer@quicinc.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
2023-03-13drm/bridge: use atomic enable/disable callbacks for panel bridgeVinod Polimera
Use atomic variants for panel bridge callback functions such that certain states like self-refresh can be accessed as part of enable/disable sequence. Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com> Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Patchwork: https://patchwork.freedesktop.org/patch/524720/ Link: https://lore.kernel.org/r/1677774797-31063-3-git-send-email-quic_vpolimer@quicinc.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
2023-02-06drm/bridge: panel: Set orientation on panel_bridge connectorJohn Keeping
Commit 15b9ca1641f0 ("drm: Config orientation property if panel provides it") added a helper to set the panel orientation early but only connected this for drm_bridge_connector, which constructs a panel bridge with DRM_BRIDGE_ATTACH_NO_CONNECTOR and creates the connector itself. When the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag is not specified and the panel_bridge creates its own connector the orientation is not set unless the panel does it in .get_modes which is too late and leads to a warning splat from __drm_mode_object_add() because the device is already registered. Call the necessary function to set add the orientation property when the connector is created so that it is available before the device is registered. Signed-off-by: John Keeping <john@metanate.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230120114313.2087015-1-john@metanate.com
2023-01-05drm/bridge: panel: Prevent ERR_PTR DereferenceMaxime Ripard
Commit 5ea6b1702781 ("drm/panel: Add prepare_prev_first flag to drm_panel") introduced an access to the bridge pointer in the devm_drm_panel_bridge_add_typed() function. However, due to the unusual ERR_PTR check when getting that pointer, the pointer access is done even though the pointer might be an error pointer. Rework the function for a more traditional design that will return immediately if it gets an ERR_PTR so that we never access the pointer in that case. Fixes: 5ea6b1702781 ("drm/panel: Add prepare_prev_first flag to drm_panel") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <error27@gmail.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20230102120123.19062-1-maxime@cerno.tech Link: https://patchwork.freedesktop.org/patch/msgid/20230102120123.19062-1-maxime@cerno.tech
2023-01-02drm/bridge: panel: Set pre_enable_prev_first from drmm_panel_bridge_addDave Stevenson
Commit 5ea6b1702781 ("drm/panel: Add prepare_prev_first flag to drm_panel") added code to copy prepare_prev_first from drm_panel to pre_enable_prev_first in drm_bridge when called through devm_panel_bridge_add, but missed drmm_panel_bridge_add. Add the same code to drmm_panel_bridge_add. Fixes: 5ea6b1702781 ("drm/panel: Add prepare_prev_first flag to drm_panel") Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20221222185213.3773336-1-dave.stevenson@raspberrypi.com
2022-12-08drm/panel: Add prepare_prev_first flag to drm_panelDave Stevenson
Mapping to the drm_bridge flag pre_enable_prev_first, add a new flag prepare_prev_first to drm_panel to allow the panel driver to request that the upstream bridge should be pre_enabled before the panel prepare. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20221205173328.1395350-6-dave.stevenson@raspberrypi.com Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2022-07-13drm/bridge: panel: Introduce drmm_of_get_bridgeMaxime Ripard
Unlike what can be found for other DRM entities, we don't have a DRM-managed function equivalent to devm_drm_of_get_bridge(). Let's create it. Acked-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://lore.kernel.org/r/20220711173939.1132294-12-maxime@cerno.tech
2022-07-13drm/bridge: panel: Introduce drmm_panel_bridge_addMaxime Ripard
Unlike what can be found for other entities, there's no DRM-managed function to create a panel_bridge instance from a panel. Let's introduce one. Acked-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://lore.kernel.org/r/20220711173939.1132294-11-maxime@cerno.tech
2022-06-21drm: Config orientation property if panel provides itHsin-Yi Wang
Panel orientation property should be set before drm_dev_register(). Some drm driver calls drm_dev_register() in .bind(). However, most panels sets orientation property relatively late, mostly in .get_modes() callback, since this is when they are able to get the connector and binds the orientation property to it, though the value should be known when the panel is probed. In drm_bridge_connector_init(), if a bridge is a panel bridge, use it to set the connector's panel orientation property. Suggested-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> [dianders: fixed space vs. tab indentation] Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220609072722.3488207-9-hsinyi@chromium.org
2022-04-19drm: bridge: panel: Register connector if DRM device is already registeredMarek Szyprowski
If panel_bridge_attach() happens after DRM device registration, the created connector will not be registered by the DRM core anymore. Fix this by registering it explicitly in such case. This fixes the following issue observed on Samsung Exynos4210-based Trats board with a DSI panel (the panel driver is registered after the Exynos DRM component device is bound): $ ./modetest -c -Mexynos could not get connector 56: No such file or directory Segmentation fault While touching this, move the connector reset() call also under the DRM device registered check, because otherwise it is not really needed. Fixes: 934aef885f9d ("drm: bridge: panel: Reset the connector state pointer") Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220419091422.4255-1-m.szyprowski@samsung.com
2022-03-31drm: bridge: panel: Reset the connector state pointerJagan Teki
Trigger hotplug event with drm_kms_helper_hotplug_event might fail if the connector state pointer is NULL. BUG observed in exynos dsi driver where drm_bridge_attach is trying to register a connector in panel_bridge before the hotplug event is triggered. WARNING: CPU: 1 PID: 1 at drivers/gpu/drm/drm_atomic_state_helper.c:494 drm_atomic_helper_connector_duplicate_state+0x94/0x9c Modules linked in: CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 5.16.0-rc1-00009-g704b1dbfa4c2 #11058 Hardware name: Samsung Exynos (Flattened Device Tree) [<c0110b30>] (unwind_backtrace) from [<c010c618>] (show_stack+0x10/0x14) [<c010c618>] (show_stack) from [<c0b657d4>] (dump_stack_lvl+0x58/0x70) [<c0b657d4>] (dump_stack_lvl) from [<c01261dc>] (__warn+0xd0/0x134) [<c01261dc>] (__warn) from [<c0b5f628>] (warn_slowpath_fmt+0x5c/0xb4) [<c0b5f628>] (warn_slowpath_fmt) from [<c064bce4>] (drm_atomic_helper_connector_duplicate_state+0x94/0x9c) [<c064bce4>] (drm_atomic_helper_connector_duplicate_state) from [<c0666b64>] (drm_atomic_get_connector_state+0xd4/0x190) [<c0666b64>] (drm_atomic_get_connector_state) from [<c0667928>] (__drm_atomic_helper_set_config+0x314/0x368) [<c0667928>] (__drm_atomic_helper_set_config) from [<c067e628>] (drm_client_modeset_commit_atomic+0x170/0x278) [<c067e628>] (drm_client_modeset_commit_atomic) from [<c067e800>] (drm_client_modeset_commit_locked+0x60/0x1c8) [<c067e800>] (drm_client_modeset_commit_locked) from [<c067e98c>] (drm_client_modeset_commit+0x24/0x40) [<c067e98c>] (drm_client_modeset_commit) from [<c06509c0>] (drm_fb_helper_set_par+0xb8/0xf8) [<c06509c0>] (drm_fb_helper_set_par) from [<c05b86d0>] (fbcon_init+0x2c0/0x518) [<c05b86d0>] (fbcon_init) from [<c060636c>] (visual_init+0xc0/0x108) [<c060636c>] (visual_init) from [<c06085e4>] (do_bind_con_driver+0x1b8/0x3a4) [<c06085e4>] (do_bind_con_driver) from [<c0608b40>] (do_take_over_console+0x13c/0x1e8) [<c0608b40>] (do_take_over_console) from [<c05b6854>] (do_fbcon_takeover+0x78/0xd8) [<c05b6854>] (do_fbcon_takeover) from [<c05b1154>] (register_framebuffer+0x208/0x2e0) [<c05b1154>] (register_framebuffer) from [<c064ead0>] (__drm_fb_helper_initial_config_and_unlock+0x400/0x63c) [<c064ead0>] (__drm_fb_helper_initial_config_and_unlock) from [<c063a718>] (drm_kms_helper_hotplug_event+0x24/0x30) [<c063a718>] (drm_kms_helper_hotplug_event) from [<c068f668>] (exynos_dsi_host_attach+0x174/0x1fc) [<c068f668>] (exynos_dsi_host_attach) from [<c0699354>] (s6e8aa0_probe+0x1b4/0x218) So reset the atomic state for a given connector by freeing the state pointer and allocate a new empty state object. This can be done using connector funcs->reset helper and has to be done before the hotplug even calls. This patch calls the connector->funcs->reset in panel_bridge_attach. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220303163654.3381470-3-jagan@amarulasolutions.com
2022-02-15drm: Plumb debugfs_init through to panelsDouglas Anderson
We'd like panels to be able to add things to debugfs underneath the connector's directory. Let's plumb it through. A panel will be able to put things in a "panel" directory under the connector's directory. Note that debugfs is not ABI and so it's always possible that the location that the panel gets for its debugfs could change in the future. NOTE: this currently only works if you're using a modern architecture. Specifically the plumbing relies on _both_ drm_bridge_connector and drm_panel_bridge. If you're not using one or both of these things then things won't be plumbed through. As a side effect of this change, drm_bridges can also get callbacks to put stuff underneath the connector's debugfs directory. At the moment all bridges in the chain have their debugfs_init() called with the connector's root directory. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220204161245.v2.2.Ib0bd5346135cbb0b63006b69b61d4c8af6484740@changeid
2021-09-22drm/bridge: Move devm_drm_of_get_bridge to bridge/panel.cMaxime Ripard
By depending on devm_drm_panel_bridge_add(), devm_drm_of_get_bridge() introduces a circular dependency between the modules drm (where devm_drm_of_get_bridge() ends up) and drm_kms_helper (where devm_drm_panel_bridge_add() is). Fix this by moving devm_drm_of_get_bridge() to bridge/panel.c and thus drm_kms_helper. Fixes: 87ea95808d53 ("drm/bridge: Add a function to abstract away panels") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210917180925.2602266-1-maxime@cerno.tech
2021-03-29drm: bridge/panel: Cleanup connector on bridge detachPaul Cercueil
If we don't call drm_connector_cleanup() manually in panel_bridge_detach(), the connector will be cleaned up with the other DRM objects in the call to drm_mode_config_cleanup(). However, since our drm_connector is devm-allocated, by the time drm_mode_config_cleanup() will be called, our connector will be long gone. Therefore, the connector must be cleaned up when the bridge is detached to avoid use-after-free conditions. v2: Cleanup connector only if it was created v3: Add FIXME v4: (Use connector->dev) directly in if() block Fixes: 13dfc0540a57 ("drm/bridge: Refactor out the panel wrapper from the lvds-encoder bridge.") Cc: <stable@vger.kernel.org> # 4.12+ Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Jonas Karlman <jonas@kwiboo.se> Cc: Jernej Skrabec <jernej.skrabec@siol.net> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210327115742.18986-2-paul@crapouillou.net
2020-08-08drm: Remove unnecessary drm_panel_attach and drm_panel_detachJoe Perches
These functions are now empty and no longer useful so remove the functions and their uses. Signed-off-by: Joe Perches <joe@perches.com> Cc: Bernard Zhao <bernard@vivo.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org>, Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Icenowy Zheng <icenowy@aosc.io>, Cc: Jagan Teki <jagan@amarulasolutions.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Robert Chiras <robert.chiras@nxp.com> Cc: dri-devel@lists.freedesktop.org, Cc: linux-kernel@vger.kernel.org Cc: opensource.kernel@vivo.com Signed-off-by: Sam Ravnborg <sam@ravnborg.org> # Fixed build and a few warnings Link: https://patchwork.freedesktop.org/patch/msgid/9e13761020750b1ce2f1fabee23ef6e2a2942882.camel@perches.com
2020-04-25drm/bridge: panel: Return always an error pointer in drm_panel_bridge_add()Enric Balletbo i Serra
Since commit 89958b7cd955 ("drm/bridge: panel: Infer connector type from panel by default"), drm_panel_bridge_add() and their variants can return NULL and an error pointer. This is fine but none of the actual users of the API are checking for the NULL value. Instead of change all the users, seems reasonable to return an error pointer instead. So change the returned value for those functions when the connector type is unknown. Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200416210654.2468805-1-enric.balletbo@collabora.com
2020-04-05drm/bridge: fix kernel-doc warning in panel.cSam Ravnborg
Add missing documentation to fix following warning: panel.c:303: warning: Function parameter or member 'bridge' not described in 'drm_panel_bridge_connector' Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Boris Brezillon <boris.brezillon@collabora.com> Cc: Mihail Atanassov <Mihail.Atanassov@arm.com> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Jonas Karlman <jonas@kwiboo.se> Cc: Jernej Skrabec <jernej.skrabec@siol.net> Link: https://patchwork.freedesktop.org/patch/msgid/20200328132025.19910-7-sam@ravnborg.org
2020-02-26drm/bridge: panel: Implement bridge connector operationsLaurent Pinchart
Implement the newly added bridge connector operations, allowing the usage of drm_bridge_panel with drm_bridge_connector. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-18-laurent.pinchart@ideasonboard.com
2020-02-26drm/bridge: Extend bridge API to disable connector creationLaurent Pinchart
Most bridge drivers create a DRM connector to model the connector at the output of the bridge. This model is historical and has worked pretty well so far, but causes several issues: - It prevents supporting more complex display pipelines where DRM connector operations are split over multiple components. For instance a pipeline with a bridge connected to the DDC signals to read EDID data, and another one connected to the HPD signal to detect connection and disconnection, will not be possible to support through this model. - It requires every bridge driver to implement similar connector handling code, resulting in code duplication. - It assumes that a bridge will either be wired to a connector or to another bridge, but doesn't support bridges that can be used in both positions very well (although there is some ad-hoc support for this in the analogix_dp bridge driver). In order to solve these issues, ownership of the connector should be moved to the display controller driver (where it can be implemented using helpers provided by the core). Extend the bridge API to allow disabling connector creation in bridge drivers as a first step towards the new model. The new flags argument to the bridge .attach() operation allows instructing the bridge driver to skip creating a connector. Unconditionally set the new flags argument to 0 for now to keep the existing behaviour, and modify all existing bridge drivers to return an error when connector creation is not requested as they don't support this feature yet. The change is based on the following semantic patch, with manual review and edits. @ rule1 @ identifier funcs; identifier fn; @@ struct drm_bridge_funcs funcs = { ..., .attach = fn }; @ depends on rule1 @ identifier rule1.fn; identifier bridge; statement S, S1; @@ int fn( struct drm_bridge *bridge + , enum drm_bridge_attach_flags flags ) { ... when != S + if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { + DRM_ERROR("Fix bridge driver to make connector optional!"); + return -EINVAL; + } + S1 ... } @ depends on rule1 @ identifier rule1.fn; identifier bridge, flags; expression E1, E2, E3; @@ int fn( struct drm_bridge *bridge, enum drm_bridge_attach_flags flags ) { <... drm_bridge_attach(E1, E2, E3 + , flags ) ...> } @@ expression E1, E2, E3; @@ drm_bridge_attach(E1, E2, E3 + , 0 ) Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-10-laurent.pinchart@ideasonboard.com
2020-02-25drm/bridge: panel: Propagate bus format/flagsBoris Brezillon
Propagate bus format/flags so that the previous bridge element in the chain knows which input format the panel bridge expects. v11: * Fix a typo in the subject * Update the commit message so it's readable by itself v10: * Add changelog to the commit message v8 -> v9: * No changes v7: * Set atomic state hooks explicitly v4 -> v6: * Not part of the series v3: * Adjust things to match the new bus-format negotiation approach * Use drm_atomic_helper_bridge_propagate_bus_fmt * Don't implement ->atomic_check() (the core now takes care of bus flags propagation) v2: * Adjust things to match the new bus-format negotiation approach Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200128135514.108171-11-boris.brezillon@collabora.com
2020-02-10drm/bridge: panel: Fix typo in drm_panel_bridge_add docsEnric Balletbo i Serra
Fix the 'manged' typo with 'managed' in the drm_panel_bridge_add kernel-doc documentation. Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191218121223.30181-1-enric.balletbo@collabora.com
2019-12-10drm/bridge: panel: export drm_panel_bridge_connectorMihail Atanassov
The function was unexported and was causing link failures for pl111 (and probably the other user tve200) in a module build. Fixes: d383fb5f8add ("drm: get drm_bridge_panel connector via helper") Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Linux Walleij <linux.walleij@linaro.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191210144834.27491-1-mihail.atanassov@arm.com
2019-12-09drm/panel: decouple connector from drm_panelSam Ravnborg
To facilitate moving connector creation to display drivers, decouple the drm_connector from drm_panel. This patch adds a connector argument to drm_panel_get_modes(). All users of drm_panel_get_modes() already had the connector available, so updating users was trivial. With this patch drm_panel no longer keeps a reference to the drm_connector. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Jonas Karlman <jonas@kwiboo.se> Cc: Jernej Skrabec <jernej.skrabec@siol.net> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Inki Dae <inki.dae@samsung.com> Cc: Joonyoung Shim <jy0922.shim@samsung.com> Cc: Seung-Woo Kim <sw0312.kim@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Kukjin Kim <kgene@kernel.org> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Stefan Agner <stefan@agner.ch> Cc: Alison Wang <alison.wang@nxp.com> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Fabio Estevam <festevam@gmail.com> Cc: NXP Linux Team <linux-imx@nxp.com> Cc: CK Hu <ck.hu@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Marek Vasut <marex@denx.de> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Cc: Sandy Huang <hjc@rock-chips.com> Cc: "Heiko Stübner" <heiko@sntech.de> Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org> Cc: Vincent Abriou <vincent.abriou@st.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: Torsten Duwe <duwe@lst.de> Cc: Vasily Khoruzhick <anarsoul@gmail.com> Cc: Icenowy Zheng <icenowy@aosc.io> Cc: Sean Paul <seanpaul@chromium.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Boris Brezillon <boris.brezillon@collabora.com> Cc: Hariprasad Kelam <hariprasad.kelam@gmail.com> Cc: Alexios Zavras <alexios.zavras@intel.com> Cc: Brian Masney <masneyb@onstation.org> Cc: Rob Clark <robdclark@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Allison Randal <allison@lohutok.net> Cc: Shayenne Moura <shayenneluzmoura@gmail.com> Cc: Abhinav Kumar <abhinavk@codeaurora.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-mediatek@lists.infradead.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-tegra@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20191207140353.23967-7-sam@ravnborg.org
2019-12-09drm: get drm_bridge_panel connector via helperSam Ravnborg
The drm_connector created by drm_panel_bridge was accessed via drm_panel.connector. Avoid the detour around drm_panel by providing a simple get method. This avoids direct access to the connector field in drm_panel in the two users. The change is done in preparation for removal of drm_panel.connector. Update pl111 and tve200 to use the new helper. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Jonas Karlman <jonas@kwiboo.se> Cc: Jernej Skrabec <jernej.skrabec@siol.net> Cc: Eric Anholt <eric@anholt.net> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20191207140353.23967-5-sam@ravnborg.org
2019-09-08drm/bridge: panel: Infer connector type from panel by defaultLaurent Pinchart
The drm panel bridge creates a connector using a connector type explicitly passed by the display controller or bridge driver that instantiates the panel bridge. Now that drm_panel reports its connector type, we can use it to avoid passing an explicit (and often incorrect) connector type to drm_panel_bridge_add() and devm_drm_panel_bridge_add(). Several drivers report incorrect or unknown connector types to userspace. Reporting a different type may result in a breakage. For that reason, rename (devm_)drm_panel_bridge_add() to (devm_)drm_panel_bridge_add_typed(), and add new (devm_)drm_panel_bridge_add() functions that use the panel connector type. Update all callers of (devm_)drm_panel_bridge_add() to the _typed function, they will be converted one by one after testing. The panel drivers have been updated with the following Coccinelle semantic patch, with manual inspection and fixes to indentation. @@ expression bridge; expression dev; expression panel; identifier type; @@ ( -bridge = drm_panel_bridge_add(panel, type); +bridge = drm_panel_bridge_add_typed(panel, type); | -bridge = devm_drm_panel_bridge_add(dev, panel, type); +bridge = devm_drm_panel_bridge_add_typed(dev, panel, type); ) Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190904132804.29680-3-laurent.pinchart@ideasonboard.com
2019-08-28drm: Stop including drm_bridge.h from drm_crtc.hBoris Brezillon
We are about to add a drm_bridge_state that inherits from drm_private_state which is defined in drm_atomic.h. Problem is, drm_atomic.h includes drm_crtc.h which in turn includes drm_bridge.h, leading to "drm_private_state has incomplete type" error. Let's force all users of the drm_bridge API to explicitly include drm_bridge.h. Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190826152649.13820-2-boris.brezillon@collabora.com
2019-06-19Merge v5.2-rc5 into drm-nextDaniel Vetter
Maarten needs -rc4 backmerged so he can pull in the fbcon notifier removal topic branch into drm-misc-next. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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