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2022-12-13backend/drm: refuse to switch CRTC for enabled connectorSimon Ser
match_obj() might return a configuration where the CRTC for an enabled connector is switched to another one. We don't support this correctly: the wlr_output common code would need to query again the supported formats, re-allocate the swapchain, etc. What's more, the kernel doesn't even support this [1]: it requires planes to be disabled to change their CRTC, it rejects commits directly switching the CRTC used by a plane. [1]: https://cgit.freedesktop.org/drm/drm-misc/tree/drivers/gpu/drm/drm_atomic.c?h=6e90293618ed476d6b11f82ce724efbb9e9a071b#n697
2022-12-13backend/drm: rename wlr_drm_backend.outputs to connectorsSimon Ser
This list contains wlr_drm_connector entries, and there is no guarantee that the wlr_output fields are initialized.
2022-12-13backend/drm: clear pending cursor FB in drm_connector_commit_state()Simon Ser
Ensure we unlock any pending cursor FB when disabling a connector.
2022-12-13backend/drm: update wlr_drm_connnector.crtc in drm_connector_commit_state()Simon Ser
If the commit fails, then our local state becomes out-of-sync with the kernel's. Additionally, when disabling a connector without going through dealloc_crtc(), conn->crtc would still be set. Fix this by updating conn->crtc in drm_connector_commit_state().
2022-12-13backend/drm: print stringified connector status in realloc_crtcs()Simon Ser
The raw enum value wasn't informative enough. It's not trivial to tell whether 0 means connected or disconnected. Drop the status from the state after realloc, since the exact same information is printed right above.
2022-12-13backend/drm: add drm_connector_status_str()Simon Ser
Helper to stringify a connector status.
2022-12-07backend/drm: store pending FB in stateSimon Ser
Instead of having a pending_fb field on the struct wlr_drm_plane, move it to struct wlr_drm_connector_state. That way, there's no risk having a stale pending FB around: the state doesn't survive across tests and commits. The cursor is a special case because it's disconnected from the atomic state: the wlr_backend_impl.set_cursor hook sets the cursor for the next commit. Move the field to wlr_drm_connector.cursor_pending_fb.
2022-12-07backend/drm: use separate field to store pending cursor FBSimon Ser
We'll move the pending primary FB into the connector state in the next commit, dropping wlr_drm_plane.pending_fb in the process. Introduce a dedicated field for the cursor, which has to be managed in a special way due to our set_cursor API.
2022-12-07backend/drm: pass fb as arg in set_plane_props()Simon Ser
plane_get_next_fb() will go away in subsequent commits. Primary and cursor will differ with the new logic. Let's prepare for this.
2022-12-07backend/drm: stop using goto in set_plane_props()Simon Ser
We only have one error code-path, no need for goto here.
2022-12-07backend/drm: simplify dealloc_crtc() commitSimon Ser
No need to manually call drm_connector_state_init() here, we can just let drm_connector_commit_state() handle it.
2022-12-07backend/drm: fix VRR testSimon Ser
We were calling drm_connector_supports_vrr() before drm_connector_alloc_crtc(). Thus, when an output is currently off, the VRR test would always fail, because it checks that the vrr_enabled CRTC prop exists.
2022-11-25backend/session: make optionalSimon Ser
Some compositors are not interested in wlr_session, for instance nested compositors. Disabling wlr_session removes the udev dependency.
2022-11-17backend/drm: don't damage output on CRTC changeSimon Ser
There's no reason why the output should be damaged here. The current buffer doesn't need to be re-painted.
2022-11-17output: call wlr_output_update_enabled() after commitSimon Ser
Backends no longer need to manually call wlr_output_update_enabled() in their commit hook: wlr_output will take care of that.
2022-11-15backend/drm: only request page-flip if activeSimon Ser
It doesn't make sense to request a page-flip for a disabled output. Fixes: 84e727daae67 ("backend/drm: request page-flip event on modeset") Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3528
2022-11-15backend/drm: fix FPE when disabling outputSimon Ser
Fixes: 65836ce357e4 ("backend/drm: log modesetting commits") Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3534
2022-11-14backend/drm: log modesetting commitsSimon Ser
2022-11-14backend/drm: log refresh rate in HzSimon Ser
2022-11-11backend: remove const casts for pixman_region32_tSimon Ser
Pixman 0.42.0 has constified APIs for pixman_region32_t. We no longer need the casts.
2022-11-11backend/drm: ensure disconnected outputs are disabled after VT switchSimon Ser
The following situation can be dangerous: - Output DP-1 is plugged in, compositor enables it. - User VT switches away. - User unplugs DP-1. - User VT switches back. - scan_drm_connectors() figures out the output is now disconnected, uninitializes the struct wlr_output. - The loop restoring previous output state in handle_session_active() accesses the struct wlr_output to figure out what to restore. By chance, we zero out the struct wlr_output after uninitializing it, so enabled and current_mode will always be zero. But let's make sure we handle this case explicitly, to remind future readers that it exists and make the code less fragile.
2022-11-11backend/drm: request page-flip event on modesetSimon Ser
The old drm_connector_set_mode() function did that by calling drm_crtc_page_flip(). We lost this in the refactoring. Fixes: f216e979836a ("backend/drm: drop drm_connector_set_mode()")
2022-11-09backend/drm: use pnp.ids to fetch EDID datailliliti
2022-11-08Revert "backend/drm: fetch EDID manufacturer from udev_hwdb"Simon Ser
This reverts commit e646d882cf4949d290fff2ba3b7ae4c124f6f13d. This commit has added a dependency on udev_hwdb. This API isn't available on all platforms (e.g. FreeBSD), and further deepens our udev dependency. A better solution is being worked on in [1]. [1]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/3638
2022-11-02backend/drm: get possible CRTCs in create_drm_connector()Simon Ser
This stuff is immutable for a given connector.
2022-11-02backend/drm: extract create_drm_connector()Simon Ser
Move a bit more logic out of the big loop in scan_drm_connectors().
2022-10-19backend/drm: fetch current CRTC once on startupSimon Ser
Once we are DRM master, the CRTC cannot be changed behind our back except during a VT switch. After a VT switch, we try to restore whatever KMS state we had last programmed. Reloading the current CRTC from KMS breaks this and can result in a modeset without a FB. Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3432
2022-10-18backend/drm: log failures in drm_surface_blit()Simon Ser
Can make issues like [1] easier to debug. [1]: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3451
2022-10-17backend/drm: drop drm_crtc_page_flip()Simon Ser
Inline it in drm_connector_commit_state(). Brings us a step closer to unifying the test code-path and the commit code-path.
2022-10-17backend/drm: log when restoring mode after VT switch failsSimon Ser
Can make it easier to track down issues.
2022-10-17backend/drm: fix EINVAL atomic commits after VT switchSimon Ser
The drm_connector_commit_state() call in handle_session_active() was not resulting in any atomic commit, because it didn't match any of the if branches: active = true, no new buffer was committed, and adaptive sync/gamma LUT were unchanged. Thus the commit was a no-op. Later on, when the compositor performs regular page-flips, the kernel would return EINVAL indicating that a modeset was needed. Rework the logic to use a non-blocking page-flip commit if a buffer was committed, and use a blocking commit if the connector is on or is being disabled. The only case where we should skip the atomic commit is when disabling (active = false) an already-disabled connector (conn->crtc == NULL). Note, 6936e163b514 ("backend/drm: short-circuit no-op commits") has introduced early returns for other situations where we don't need to perform an atomic commit (e.g. updating scale or transform of an output). Fixes: f216e979836a ("backend/drm: drop drm_connector_set_mode()") Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3432
2022-10-17backend/drm: extract current mode logic into separate functionSimon Ser
Extract the logic to fetch the current mode to a separate function to make it more readable. Stop dying in an assert when get_drm_prop_blob() fails. Always make it so the drmModeModeInfo pointer is allocated so that we can free() it unconditionally.
2022-10-15backend/drm: extract connect_drm_connector() logicSimon Ser
We already have disconnect_drm_connector() to handle the CONNECTED → DISCONNECTED transition. Let's add connect_drm_connector() to handle DISCONNECTED → CONNECTED. This makes scan_drm_connectors() shorter and easier to follow. No functional change, literally just moving code around.
2022-10-14backend/drm: use atomic API to fetch current connector's CRTCSimon Ser
We were using the legacy API (with a detour through drmModeEncoder) to find out the current CRTC for a connector. Use the atomic API when available. Also extract the whole logic into a separate function for better readability, and better handle errors.
2022-10-13backend/drm: use wl_container_of() instead of casts for wlr_drm_modeSimon Ser
Instead of casting a wlr_output_mode to wlr_drm_mode, use wl_container_of() for slightly better type safety.
2022-10-13backend/drm/legacy: Fix whitespaceAlexander Orzechowski
This confused me while reading through.
2022-10-10backend/drm: drop drm_connector_set_mode()Simon Ser
Instead of special-casing modesets, we can just cut the wrapper and directly call drm_crtc_page_flip(). drm_connector_test() should already have the checks previously done in drm_connector_set_mode(), all we need to do is update enabled/mode after a successful atomic commit.
2022-10-07backend/drm: allocate connector CRTC on lease creationSimon Zeni
This was leading to crash in compositors if the wanted connector had no CRTC
2022-10-07backend/drm: nuke wlr_drm_connector.desired_enabledSimon Ser
This field becomes stale too easily: for instance, see 6adca4089cf4 ("backend/drm: don't unconditionally set desired_enabled"). Additionally, drm_connector_alloc_crtc() needs to do some weird dance, restoring its previous value. Instead, add a connector arg to realloc_crtcs() to indicate a new connector we want to enable.
2022-10-07backend/drm: drop unnecessary wlr_drm_connector.crtc checksSimon Ser
drm_connector_alloc_crtc() already checks this.
2022-10-03backend/drm: remove outdated TODOSimon Ser
This has been addressed in 8795dde94eeb ("Initialize connectors current mode to the mode used by KMS on startup.").
2022-10-03backend/drm: don't unconditionally set desired_enabledSimon Ser
We were unconditonally setting desired_enabled = true for all connected connectors. This makes realloc_crtcs() always keep a CRTC active for these, even if the user doesn't want to enable them.
2022-09-30backend/drm: fix missing wlr_output_state.allow_artifactsSimon Ser
Without allow_artifacts, applying the new state will fail because it requires ALLOW_MODESET. Fixes VT switch and disabling CRTCs.
2022-09-30output: add wlr_output_state.allow_artifactsSimon Ser
When starting up, the compositor might call wlr_output_set_mode() with a mode which is already the current one. wlroots will detect this and make the wlr_output_set_mode() call a no-op. During the next wlr_output_commit() call, wlroots will perform an atomic commit without the ALLOW_MODESET flag. This is an issue, because some drivers need ALLOW_MODESET even if the mode is the same. For instance, if the FB stride or modifier changed, some drivers require a modeset. Add a new flag "allow_artifacts" which is set when the compositor calls mode-setting functions. Use this flag to figure out whether we want to perform atomic commits with ALLOW_MODESET. (The name "allow_artifacts" is picked because ALLOW_MODESET is a misnomer, see [1].) [1]: https://patchwork.freedesktop.org/patch/505107/ Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3499
2022-09-22backend/drm: pass through mode picture aspect ratioSimon Ser
2022-09-21backend/drm: de-duplicate wlr_drm_mode creationSimon Ser
Introduce a function to convert a drmModeModeInfo into a new wlr_drm_mode.
2022-09-16Only set max_bpc when full modesetting is being done.vanfanel
2022-09-16Initialize connectors current mode to the mode used by KMS on startup.vanfanel
2022-08-30output: fail commits if adaptive sync cannot be enabledSimon Ser
Previously, adaptive sync was just a hint and wouldn't make any atomic commit fail if the backend didn't support it. The main reason is wlr_output_test wasn't supported at the time. Now that we have a way for compositors to test whether a change can work, let's remove the exception for adaptive sync and convert it to a regular output state field.
2022-08-22Use env helpersAlexander Orzechowski
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