1. 31 Jan, 2020 1 commit
    • Boris Brezillon's avatar
      drm/bridge: Add a drm_bridge_state object · 75146591
      Boris Brezillon authored
      One of the last remaining objects to not have its atomic state.
      
      This is being motivated by our attempt to support runtime bus-format
      negotiation between elements of the bridge chain.
      This patch just paves the road for such a feature by adding a new
      drm_bridge_state object inheriting from drm_private_obj so we can
      re-use some of the existing state initialization/tracking logic.
      
      v10:
      * Add changelog to the commit message
      
      v9:
      * Clarify the fact that the bridge->atomic_reset() and
        {connector,plane,crtc,...}->reset() semantics are different
      * Move the drm_atomic_private_obj_init() call back to
        drm_bridge_attach()
      * Check the presence of ->atomic_duplicate_state instead of
        ->atomic_reset in drm_atomic_add_encoder_bridges()
      * Fix copy&paste errors in the atomic bridge state helpers doc
      * Add A-b/R-b tags
      
      v8:
      * Move bridge state helpers out of the CONFIG_DEBUGFS section
      
      v7:
      * Move helpers, struct-defs, ... to atomic helper files to avoid the
        drm -> drm_kms_helper -> drm circular dep
      * Stop providing default implementation for atomic state reset,
        duplicate and destroy hooks (has to do with the helper/core split)
      * Drop all R-b/T-b as helpers have now be moved to other places
      
      v6:
      * Made helpers private, removed doc and moved them to satisfy dependencies
      * Renamed helpers to _default_
      
      v5:
      * Re-introduced the helpers from v4
      
      v4:
      * Fix the doc
      * Kill default helpers (inlined)
      * Fix drm_atomic_get_bridge_state() to check for an ERR_PTR()
      * Add Neil's R-b
      
      v3:
      * No changes
      
      v2:
      * Use drm_for_each_bridge_in_chain()
      * Rename helpers to be more consistent with the rest of the DRM API
      * Improve/fix the doc
      Signed-off-by: default avatarBoris Brezillon <boris.brezillon@collabora.com>
      Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
      Reviewed-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
      Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Link: https://patchwork.freedesktop.org/patch/msgid/20200128135514.108171-2-boris.brezillon@collabora.com
      75146591
  2. 30 Jan, 2020 19 commits
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  6. 25 Jan, 2020 2 commits