1. 31 May, 2016 2 commits
    • Lukas Wunner's avatar
      vga_switcheroo: Add helper for deferred probing · b00e5334
      Lukas Wunner authored
      So far we've got one condition when DRM drivers need to defer probing
      on a dual GPU system and it's coded separately into each of the relevant
      drivers. As suggested by Daniel Vetter, deduplicate that code in the
      drivers and move it to a new vga_switcheroo helper. This yields better
      encapsulation of concepts and lets us add further checks in a central
      place. (The existing check pertains to pre-retina MacBook Pros and an
      additional check is expected to be needed for retinas.)
      
      One might be tempted to check deferred probing conditions in
      vga_switcheroo_register_client(), but this is usually called fairly late
      during driver load. The GPU is fully brought up and ready for switching
      at that point. On boot the ->probe hook is potentially called dozens of
      times until it finally succeeds, and each time we'd repeat bringup and
      teardown of the GPU, lengthening boot time considerably and cluttering
      logfiles. A separate helper is therefore needed which can be called
      right at the beginning of the ->probe hook.
      
      Note that amdgpu currently does not call this helper as the AMD GPUs
      built into MacBook Pros are only supported by radeon so far.
      
      v2: This helper could eventually be used by audio clients as well,
          so rephrase kerneldoc to refer to "client" instead of "GPU"
          and move the single existing check in an if block specific
          to PCI_CLASS_DISPLAY_VGA devices. Move documentation on
          that check from kerneldoc to a comment. (Daniel Vetter)
      
      v3: Mandate in kerneldoc that registration of client shall only
          happen after calling this helper. (Daniel Vetter)
      
      v4: Rebase on 412c8f7d ("drm/radeon: Return -EPROBE_DEFER when
          amdkfd not loaded")
      
      v5: Some Optimus GPUs use PCI_CLASS_DISPLAY_3D, make sure those are
          matched as well. (Emil Velikov)
      
      v6: The if-condition referring to PCI_BASE_CLASS_DISPLAY may be
          considered a functional change. Move to a separate commit to
          keep this a pure refactoring change. (Emil Velikov, Jani Nikula)
      
      Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
      Cc: Ben Skeggs <bskeggs@redhat.com>
      Cc: Alex Deucher <alexander.deucher@amd.com>
      Signed-off-by: default avatarLukas Wunner <lukas@wunner.de>
      Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Link: http://patchwork.freedesktop.org/patch/msgid/575885fd440c2b13c3f19ddf44360cfbbff35f50.1464685538.git.lukas@wunner.de
      b00e5334
    • Gerd Hoffmann's avatar
      virtio-gpu: fix output lookup · d1e372c4
      Gerd Hoffmann authored
      Needed for multihead setups where we can have disabled
      outputs and therefore plane->crtc can be NULL.
      Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
      Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Link: http://patchwork.freedesktop.org/patch/msgid/1464609806-22013-1-git-send-email-kraxel@redhat.com
      d1e372c4
  2. 30 May, 2016 3 commits
  3. 24 May, 2016 2 commits
  4. 23 May, 2016 6 commits
  5. 20 May, 2016 27 commits