kernel/linux.git/drivers/gpu/drm/drm_internal.h, branch linux-6.9.y

drm: Remove source code for non-KMS drivers

2023-12-06T09:08:37+00:00

Remove all remaining source code for non-KMS drivers. These drivers have been removed in v6.3 and won't comeback. Signed-off-by: Thomas Zimmermann Reviewed-by: David Airlie Reviewed-by: Daniel Vetter Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20231122122449.11588-13-tzimmermann@suse.de

drm: Remove the legacy DRM_IOCTL_MODESET_CTL ioctl

2023-12-06T09:08:24+00:00

DRM drivers with user-space mode setting have been removed in Linux v6.3. [1] Now remove the ioctl entry points for these drivers. Invoking any of the ioctl ops will unconditionally return -EINVAL to user space. Invoking DRM_IOCTL_MODESET_CTL is different from the other legacy ioctl ops as it returns 0 even without CONFIG_DRM_LEGACY set. From the original commit 29935554b384 ("drm: Disallow DRM_IOCTL_MODESET_CTL for KMS drivers") it is not apparent how or why the operation differs from the others. It is likely just an oversight in commit 61ae227032e7 ("drm: allow removal of legacy codepaths (v4.1)"), which allowed disabling leagacy ioctls in the first place. Still keep this removal separate from the other ioctls to allow an easy revert, if necessary. Signed-off-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/series/111602/ # [1] Reviewed-by: David Airlie Reviewed-by: Daniel Vetter Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20231122122449.11588-10-tzimmermann@suse.de

drm/encoder: register per-encoder debugfs dir

2023-12-04T14:07:29+00:00

Each of connectors and CRTCs used by the DRM device provides debugfs directory, which is used by several standard debugfs files and can further be extended by the driver. Add such generic debugfs directories for encoder. Reviewed-by: Neil Armstrong Acked-by: Maxime Ripard Signed-off-by: Dmitry Baryshkov Link: https://patchwork.freedesktop.org/patch/msgid/20231203115315.1306124-2-dmitry.baryshkov@linaro.org

drm/edid: add helpers to get/set struct cea_sad from/to 3-byte sad

2023-11-09T14:47:56+00:00

Add helpers to pack/unpack SADs. Both ways and non-static, as follow-up work needs them. v2: Add include to get the declarations Cc: Mitul Golani Reviewed-by: Mitul Golani Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/21d657ca854ce26423b461c0bb71e7a0727ba437.1698747331.git.jani.nikula@intel.com

Merge tag 'drm-intel-next-2023-09-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

2023-10-04T03:55:19+00:00

drm/i915 feature pull for v6.7: Features and functionality: - Early Xe2 LPD / Lunarlake (LNL) display enabling (Lucas, Matt, Gustavo, Stanislav, Luca, Clint, Juha-Pekka, Balasubramani, Ravi) - Plenty of various DSC improvements and fixes (Ankit) - Add DSC PPS state readout and verification (Suraj) - Improve fastsets for VRR, LRR and M/N updates (Ville) - Use connector->ddc to create (non-DP MST) connector sysfs ddc symlinks (Ville) - Various DSB improvements, load LUTs using DSB (Ville) - Improve shared link bandwidth management, starting with FDI (Imre) - Optimize get param ioctl for PXP status (Alan) - Remove DG2 pre-production hardware workarounds (Matt) - Add more RPL P/U PCI IDs (Dnyaneshwar) - Add new DG2-G12 stepping (Swati) - Add PSR sink error status to debugfs (Jouni) - Add DP enhanced framing to crtc state checker (Ville) Refactoring and cleanups: - Simplify TileY/Tile4 tiling selftest enumeration (Matt) - Remove some unused power domain code (Gustavo) - Check stepping of display IP version rather than MTL platform (Matt) - DP audio compute config cleanups (Vinod) - SDVO cleanups and refactoring, more robust failure handling (Ville) - Color register definition and readout cleanups (Jani) - Reduce header interdependencies for frontbuffer tracking (Jani) - Continue replacing struct edid with struct drm_edid (Jani) - Use source physical address instead of EDID for CEC (Jani) - Clean up Type-C port lane count functions (Luca) - Clean up DSC PPS register definitions and readout (Jani) - Stop using GEM_BUG_ON()/GEM_WARN_ON() in display code (Jani) - Move more of the display probe to display code (Jani) - Remove redundant runtime suspended state flag (Jouni) - Move display info printing to display code (Balasubramani) - Frontbuffer tracking improvements (Jouni) - Add trailing newlines to debug logging (Jim Cromie) - Separate display workarounds from clock gating init (Matt) - Reduce dmesg log spamming for combo PHY, PLL state, FEC, DP MST (Ville, Imre) Fixes: - Fix hotplug poll detect loops via suspend/resume (Imre) - Fix hotplug detect for forced connectors (Imre) - Fix DSC first_line_bpg_offset calculation (Suraj) - Fix debug prints for SDP CRC16 (Arun) - Fix PXP runtime resume (Alan) - Fix cx0 PHY lane handling (Gustavo) - Fix frontbuffer tracking locking in debugfs (Juha-Pekka) - Fix SDVO detect on some models (Ville) - Fix SDP split configuration for DP MST (Vinod) - Fix AUX usage and reads for HDCP on DP MST (Suraj) - Fix PSR workaround (Jouni) - Fix redundant AUX power get/put in DP force (Imre) - Fix ICL DSI TCLK POST by letting hardware handle it (William) - Fix IRQ reset for XE LP+ (Gustavo) - Fix h/vsync_end instead of h/vtotal in VBT (Ville) - Fix C20 PHY msgbus timeout issues (Gustavo) - Fix pre-TGL FEC pipe A vs. DDI A mixup (Ville) - Fix FEC state readout for DP MST (Ville) DRM subsystem core changes: - Assume sink supports 8 bpc when DSC is supported (Ankit) - Add drm_edid_is_digital() helper (Jani) - Parse source physical address from EDID (Jani) - Add function to attach CEC without EDID (Jani) - Reorder connector sysfs/debugfs remove (Ville) - Register connector sysfs ddc symlink later (Ville) Media subsystem changes: - Add comments about CEC source physical address usage (Jani) Merges: - Backmerge drm-next to get v6.6-rc1 (Jani) Signed-off-by: Dave Airlie # Conflicts: # drivers/gpu/drm/i915/i915_drv.h From: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/87r0mhi7a6.fsf@intel.com

drm/sysfs: Register "ddc" symlink later

2023-09-15T11:46:42+00:00

Currently drm_sysfs_connector_add() attempts to register the "ddc" symlink (based one connector->ddc) before the driver's .early_register() hook has been called. That is too early for i915 which only fully registers the aux ch and associated i2c bus from said hook (to prevent half initialized stuff getting exposed to userspace). This causes my attempt at using drm_connector_init_with_ddc() to fail, and the entire connector disappears from sysfs on account of sysfs_create_link() failing. To fix that split the sysfs symlink stuff into separate functions (drm_sysfs_connector_add_late() and drm_sysfs_connector_remove_early()) which are called on the opposite side of the .later_register() and .early_unregister() hooks. Cc: Andrzej Pietrasiewicz Cc: Daniel Vetter Cc: Andrzej Hajda Cc: Emil Velikov Cc: Sam Ravnborg Cc: Neil Armstrong Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20230829113920.13713-3-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula Acked-by: Thomas Zimmermann #irc

drm/debugfs: rework drm_debugfs_create_files implementation v2

2023-09-01T06:54:12+00:00

Use managed memory allocation for this. That allows us to not keep track of all the files any more. v2: keep drm_debugfs_cleanup(), but rename to drm_debugfs_unregister(), we still need to cleanup the symlink Signed-off-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20230829110115.3442-6-christian.koenig@amd.com Reviewed-by: Andi Shyti

drm/debugfs: remove dev->debugfs_list and debugfs_mutex v2

2023-09-01T06:53:05+00:00

The mutex was completely pointless in the first place since any parallel adding of files to this list would result in random behavior since the list is filled and consumed multiple times. Completely drop that approach and just create the files directly but return -ENODEV while opening the file when the minors are not registered yet. v2: rebase on debugfs directory rework, limit access before minors are registered. Signed-off-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20230829110115.3442-5-christian.koenig@amd.com Reviewed-by: Andi Shyti

drm/debugfs: rework debugfs directory creation v5

2023-09-01T06:51:18+00:00

Instead of the per minor directories only create a single debugfs directory for the whole device directly when the device is initialized. For DRM devices each minor gets a symlink to the per device directory for now until we can be sure that this isn't useful any more in any way. Accel devices create only the per device directory and also drops the mid layer callback to create driver specific files. v2: cleanup accel component as well v3: fix typo when debugfs is disabled v4: call drm_debugfs_dev_fini() during release as well, some kerneldoc typos fixed v5: rebased and one more kerneldoc fix Signed-off-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20230829110115.3442-4-christian.koenig@amd.com Reviewed-by: Andi Shyti

drm/syncobj: add IOCTL to register an eventfd

2023-07-20T10:01:03+00:00

Introduce a new DRM_IOCTL_SYNCOBJ_EVENTFD IOCTL which signals an eventfd from a syncobj. This is useful for Wayland compositors to handle wait-before-submit. Wayland clients can send a timeline point to the compositor before the point has materialized yet, then compositors can wait for the point to materialize via this new IOCTL. The existing DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT IOCTL is not suitable because it blocks. Compositors want to integrate the wait with their poll(2)-based event loop. Requirements for new uAPI: - User-space patch: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4262 - IGT: https://lists.freedesktop.org/archives/igt-dev/2023-July/057893.html v2: - Wait for fence when flags is zero - Improve documentation (Pekka) - Rename IOCTL (Christian) - Fix typo in drm_syncobj_add_eventfd() (Christian) v3: - Link user-space + IGT patches - Add reference from overview docs v4: fix IOCTL number conflict with GETFB2 (Nicholas Choi, Vitaly Prosyak) Signed-off-by: Simon Ser Reviewed-by: Christian König Acked-by: Pekka Paalanen Cc: Jason Ekstrand Cc: Daniel Vetter Cc: Bas Nieuwenhuizen Cc: Daniel Stone Cc: James Jones Cc: Austin Shafer Cc: Vitaly Prosyak Link: https://patchwork.freedesktop.org/patch/msgid/20230714111257.11940-1-contact@emersion.fr