AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/include/drm
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Laurent Pinchart 5e20bdf3d3 drm: Add helper to create a connector for a chain of bridges 
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 needs to be
moved to the display controller driver.

To avoid code duplication in display controller drivers, add a new
helper to create and manage a DRM connector backed by a chain of
bridges. All connector operations are delegating to the appropriate
bridge in the chain.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-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/20200226112514.12455-21-laurent.pinchart@ideasonboard.com
2020-02-26 13:31:41 +02:00
..
bridge drm-misc-next for v5.6: 2020-01-03 11:43:44 +10:00
i2c
ttm drm/ttm: rework BO delayed delete. v2 2020-02-12 13:03:27 +01:00
amd_asic_type.h drm/amdgpu: Add a kernel parameter for specifying the asic type 2019-09-16 09:54:25 -05:00
drm_agpsupport.h drm/agp: Remove unused function drm_agp_bind_pages 2019-07-15 18:11:30 +02:00
drm_atomic_helper.h drm/bridge: Add the necessary bits to support bus format negotiation 2020-01-31 16:39:53 +01:00
drm_atomic_state_helper.h drm/bridge: Add a drm_bridge_state object 2020-01-31 16:00:21 +01:00
drm_atomic_uapi.h
drm_atomic.h drm/bridge: Fix the bridge kernel doc 2020-02-18 16:50:45 +01:00
drm_audio_component.h Prep patches + headers for the mei-hdcp/i915 component interfaces 2019-02-20 11:53:48 +02:00
drm_auth.h drm: make drm/drm_auth.h self contained 2019-05-27 18:05:44 +02:00
drm_blend.h
drm_bridge_connector.h drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00
drm_bridge.h drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
drm_cache.h MIPS: Loongson64: Rename CPU TYPES 2019-10-31 15:03:10 -07:00
drm_client.h drm/client: Rename _force to _locked 2020-02-11 15:03:08 +01:00
drm_color_mgmt.h drm: Inline drm_color_lut_extract() 2019-11-29 21:29:17 +02:00
drm_connector.h drm/edid: Add flag to drm_display_info to identify HDMI sinks 2020-02-26 13:31:19 +02:00
drm_crtc_helper.h drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
drm_crtc.h drm: Add get_vblank_timestamp() to struct drm_crtc_funcs 2020-02-13 13:08:13 +01:00
drm_damage_helper.h drm/damage-helper: Add drm_atomic_helper_damage_merged() 2019-01-17 10:56:54 +01:00
drm_debugfs_crc.h
drm_debugfs.h drm: drm_debugfs.h self-contained 2019-06-10 22:30:24 +02:00
drm_device.h drm: Avoid drm_global_mutex for simple inc/dec of dev->open_count 2020-01-24 17:41:34 +00:00
drm_displayid.h drm/edid: parse CEA blocks embedded in DisplayID 2019-06-25 14:32:26 +10:00
drm_dp_dual_mode_helper.h
drm_dp_helper.h Linux 5.6-rc2 2020-02-17 10:34:34 +01:00
drm_dp_mst_helper.h Linux 5.6-rc2 2020-02-17 10:34:34 +01:00
drm_drv.h drm: Clean-up VBLANK-related callbacks in struct drm_driver 2020-02-13 13:10:10 +01:00
drm_dsc.h drm/dsc: Split DSC PPS and SDP header initialisations 2019-03-05 13:24:34 -05:00
drm_edid.h drm/edid: Add drm_hdmi_avi_infoframe_bars() 2019-10-22 19:11:11 +03:00
drm_encoder_slave.h drm: remove include of drmP.h from drm_encoder_slave.h 2019-01-09 22:35:35 +01:00
drm_encoder.h drm/bridge: Document the drm_encoder.bridge_chain field as private 2020-02-26 13:31:20 +02:00
drm_fb_cma_helper.h drm/fb-cma-helpers: Fix include issue 2020-01-09 17:33:41 +01:00
drm_fb_helper.h drm/fb-helper: Remove drm_fb_helper_unlink_fbi() 2019-11-19 14:37:39 +01:00
drm_file.h drm: Release filp before global lock 2020-01-24 17:41:34 +00:00
drm_fixed.h
drm_flip_work.h
drm_format_helper.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
drm_fourcc.h drm/fb: Extend format_info member arrays to handle four planes 2020-01-07 13:16:08 +02:00
drm_framebuffer.h drm/fb: document dirty helper better 2019-06-11 18:02:48 +02:00
drm_gem_cma_helper.h drm: remove drmP.h from drm_gem_cma_helper.h 2019-01-09 22:54:08 +01:00
drm_gem_framebuffer_helper.h drm/fb: remove unused function: drm_gem_fbdev_fb_create() 2019-07-21 19:32:38 +02:00
drm_gem_shmem_helper.h Linux 5.4-rc7 2019-11-14 05:53:10 +10:00
drm_gem_ttm_helper.h drm/ttm: add drm_gem_ttm_mmap() 2019-10-17 13:59:16 +02:00
drm_gem_vram_helper.h drm/vram: Add helpers to validate a display mode's memory requirements 2020-02-06 10:32:54 +01:00
drm_gem.h drm: call drm_gem_object_funcs.mmap with fake offset 2019-12-06 11:18:11 +01:00
drm_hashtab.h
drm_hdcp.h drm/hdcp: update content protection property with uevent 2019-08-06 13:17:23 +05:30
drm_ioctl.h drm/ioctl: Ditch DRM_UNLOCKED except for the legacy vblank ioctl 2019-06-21 19:13:10 +02:00
drm_irq.h
drm_lease.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
drm_legacy.h drm: Remove the dma_alloc_coherent wrapper for internal usage 2020-02-04 23:57:26 +00:00
drm_mipi_dbi.h drm/mipi_dbi: Add support for display offsets 2020-01-19 18:07:08 +01:00
drm_mipi_dsi.h drm/dsi: add helpers for DSI compression mode and PPS packets 2019-11-07 15:00:16 +02:00
drm_mm.h drm/mm: Convert drm_mm_node booleans to bitops 2019-10-04 13:43:13 +01:00
drm_mode_config.h drm: Add Content protection type property 2019-08-06 13:14:07 +05:30
drm_mode_object.h
drm_modes.h drm: drop unused drm_display_mode.private 2020-02-15 21:15:46 +01:00
drm_modeset_helper_vtables.h drm: drop unused drm_crtc callback 2020-02-15 21:15:17 +01:00
drm_modeset_helper.h drm: remove drmP.h from drm_modeset_helper.h 2019-02-07 21:48:34 +01:00
drm_modeset_lock.h drm: Add drm_modeset_lock_assert_held() 2019-09-19 21:37:59 +03:00
drm_of.h drm: of: Fix linking when CONFIG_OF is not set 2020-01-09 10:40:58 +10:00
drm_panel.h drm/drm_panel: fix export of drm_panel_of_backlight, try #3 2020-01-12 21:16:30 +01:00
drm_pci.h drm/pci: Hide legacy PCI functions from non-legacy code 2019-12-05 08:44:04 +01:00
drm_pciids.h
drm_plane_helper.h
drm_plane.h drm/plane: Clarify our expectations for src/dst rectangles 2019-10-10 15:49:34 +02:00
drm_prime.h drm/prime: Remove duplicate forward declaration 2019-09-16 17:32:51 +02:00
drm_print.h drm/print: clean up RATELIMITED macros 2020-02-15 14:39:35 +01:00
drm_probe_helper.h drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
drm_property.h
drm_rect.h drm/selftests: Add drm_rect selftests 2019-11-28 13:33:43 +02:00
drm_scdc_helper.h drm/scdc: Fix typo in bit definition of SCDC_STATUS_FLAGS 2019-11-04 17:58:46 +01:00
drm_self_refresh_helper.h drm/atomic: fix self-refresh helpers crtc state dereference 2019-11-06 13:00:21 -05:00
drm_simple_kms_helper.h drm: Initialize struct drm_crtc_state.no_vblank from device settings 2020-01-30 08:57:12 +01:00
drm_syncobj.h drm/syncobj: add new drm_syncobj_add_point interface v4 2019-04-01 12:05:53 +02:00
drm_sysfs.h drm: uevent for connector status change 2019-08-06 13:16:54 +05:30
drm_util.h drm: Move EXPORT_SYMBOL_FOR_TESTS_ONLY under a separate Kconfig 2019-11-07 21:22:15 +00:00
drm_utils.h drm: export drm_timeout_abs_to_jiffies 2019-03-07 12:00:30 -06:00
drm_vblank.h drm: Remove legacy version of get_scanout_position() 2020-02-13 13:10:10 +01:00
drm_vma_manager.h drm: increase drm mmap_range size to 1TB 2019-04-24 16:20:23 -05:00
drm_writeback.h drm: writeback: Add job prepare and cleanup operations 2019-03-18 17:24:38 +02:00
gma_drm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 2019-06-05 17:37:06 +02:00
gpu_scheduler.h drm/amdgpu: fix doc by clarifying sched_list definition 2020-01-27 16:46:44 -05:00
i915_component.h drm/i915/tgl: Add additional ports for Tiger Lake 2019-07-11 16:31:14 -07:00
i915_drm.h drm: Move port definition back to i915 header 2019-08-30 14:08:26 +05:30
i915_mei_hdcp_interface.h drm: Extend I915 mei interface for transcoder info 2019-08-30 14:08:28 +05:30
i915_pciids.h drm/i915/cml: Separate U series pci id from origianl list. 2019-12-12 22:15:16 +02:00
intel_lpe_audio.h
intel-gtt.h drm: include kernel.h and agp_backend.h from intel-gtt.h 2019-01-02 11:37:47 +02:00
spsc_queue.h
task_barrier.h drm: Add Reusable task barrier. 2019-12-18 16:09:12 -05:00