On Wed, 17 Jun 2015, Chris Wilson <ch...@chris-wilson.co.uk> wrote: > On Wed, Jun 17, 2015 at 02:01:57PM +1000, Dave Airlie wrote: >> From: Dave Airlie <airl...@redhat.com> >> >> This just adds enables for the codecs and debugfs >> support for mst connectors to print the audio info. >> >> This relies on patches to the audio code to do anything >> more useful. >> >> Signed-off-by: Dave Airlie <airl...@redhat.com> >> --- >> @@ -231,6 +231,7 @@ static void hsw_audio_codec_enable(struct drm_connector >> *connector, >> /* Reset ELD write address */ >> tmp = I915_READ(HSW_AUD_DIP_ELD_CTRL(pipe)); >> tmp &= ~IBX_ELD_ADDRESS_MASK; >> + tmp |= ((pipe + 1) << 29); >> I915_WRITE(HSW_AUD_DIP_ELD_CTRL(pipe), tmp); > > This is not MST specific. Is this a bug fix we want ASAP?
""" This read-only bit reflects which port is used to transmit the DIP data. This can only change when DIP is disabled. If one or more audio-related DIP packets is enabled and audio is enabled on a digital port, these bits will reflect the digital port to which audio is directed. For DP MST, this is the device select/pipe select. """ We shouldn't mess with the field if it's regular DP. Also "pipe + 1" is too magic; unfortunately I don't know what it should be. :( BR, Jani. > -Chris > > -- > Chris Wilson, Intel Open Source Technology Centre > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
