• Daniel Vetter's avatar
    drm/i915: Track has_audio in the pipe config · 9ed109a7
    Daniel Vetter authored
    Including state readout and cross-checking. This allows us to get rid
    of crtc->eld_vld on hsw+. It also means that fastboot will be unhappy
    if the BIOS hasn't set up the audio routing like we want it too.
    
    Wrt fastboot and external screens I see a few options:
    - Don't.
    - Try to fix up eld, infoframes and audio settings after the fact. But
      that means some pretty extensive reworking of our code which
      currently does all this while the pipe/port is still off.
    
    I won't bother with converting SDVO over to this because the audio
    support for SDVO is very lacking:
    - We don't update the eld.
    - We don't update the audio state on the sdvo encoder.
    - We don't check whether the platform can even feed audio to the sdvo
      encoder.
    
    I've converted hdmi, dp & ddi all in one go since ddi needs both hdmi
    and dp converted and so doing it step-by-step would have required a
    few intermediate hacks.
    Reviewed-by: default avatarNaresh Kumar Kachhi <naresh.kumar.kachhi@intel.com>
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    9ed109a7
intel_ddi.c 47 KB