This patch series adds DP audio and hotplug notification support.

On Skylake two DP ports are available and to enable DP on both ports all pins need to be enabled.

There is a special vendor widget which need to be programmed to enable all pins and converters. This series adds hotplug notification, read/set constraint based on ELD, enable all pin/cvts, DP1.2, programs the audio infoframe for DP. There is a one to one mapping between converter and stream, so the dais are created based on the no of streams supported on hdmi codec. Even though cvts can be mapped dynamically to the streams, currently it is statically mapped as simultaneous playback on both DP and HDMI is not supported as of now.

Pin muxes and controls are created dynamically to map converter to pin widget. So at run time specific pin is mapped to the dai based on the control selected (based on the display type DP/HDMI connected).

Finally the DP audio infoframe programming is added to support the DP feature.

Also with hotplug notification support, ELD is read and capabilities are set for rate, formats and channels. drm_eld sound/core framework is updated to limit the formats based on ELD.

There are few fixes one fixing the static checker warning and other one not to fail if no connection list is found for a pin widget.

Pls note, the 12th patch is adding a small macro for getting connection type in drm header, we have CCed drm folks on that and this one. Pls ack so that we can have this series merged thru sound trees

Jeeja KP (1): ASoC: hdac_hdmi: Add codec suspend/resume handler

Ramesh Babu (1): ASoC: hdac_hdmi: Keep display active while enumerating codec

Subhransu S. Prusty (13): ASoC: hdac_hdmi: Fix to check num nodes correctly ASoC: hdac_hdmi: Fix to warn instead of err for no connected nids ASoC: hdac_hdmi - Use list to add pins and converters ALSA: hda - Add helper to read eld data ASoC: hdac_hdmi: Add hotplug notification and read eld ALSA: pcm: Add DRM helper to set constraint for format ASoC: hdac_hdmi: Apply constraints based on ELD ASoC: hdac_hdmi: Enable DP1.2 and all converters/pins ASoC: hdac_hdmi - create dais based on number of streams ASoC: hdac_hdmi: Create widget/route based on nodes enumerated ASoC: hdac_hdmi: Assign pin for stream based on dapm connection drm/edid: Add API to help find connection type ASoC: hdac_hdmi: Add infoframe support for dp audio

include/drm/drm_edid.h | 10 + include/sound/hdaudio.h | 3 + sound/core/pcm_drm_eld.c | 42 +- sound/hda/Makefile | 2 +- sound/hda/hdac_eld.c | 95 +++++ sound/soc/codecs/Kconfig | 1 + sound/soc/codecs/hdac_hdmi.c | 908 ++++++++++++++++++++++++++++++++++++------- 7 files changed, 908 insertions(+), 153 deletions(-) create mode 100644 sound/hda/hdac_eld.c