[alsa-devel] [RFC v5 0/3] Enable HDA Codec support on Intel Platforms (Series1)

[Rakesh Ughreja]

Enhanced HD Audio capabilities introduced in HD Audio controllers are
added in backward compatible way i.e. it does not change the behavior
of the controller with respect to HDA Bus and HDA devices.

Since there is no change in the hardware with respect to the HDA bus and
HDA device it is more appropriate to represent the same in software as
well.

In order to align software representation with hardware it makes more
sense to have common data structures across device, bus and driver for both
enhanced HDA controllers and legacy HDA controllers.

This patch series removes the hdac_ext_device structure, hdac_ext_bus and
hdac_ext_driver data structures so that legacy and enhanced HDaudio
capabilities can be handled in a backwards-compatible way without
separate definitions.

Once this clean-up is complete, additional patches will allow for
HDaudio codec support in an ASoC framework without the need to develop
new codec drivers, thereby enabling the use of the Intel DSP on more
platforms (currently limited to hdmi).

Changes in v5:
- No functionality changes in this series except rebase.

Changes in v4:
- No changes in this series except rebase as there were no comments.

Changes in v3:
- No changes in this series except rebase as there were no comments.

Changes in v2:
- First three patches from v1 are merged so not included in this series.
- No changes in this series except rebase as there were no comments.

Rakesh Ughreja (3):
  ALSA: hdac: Remove usage of struct hdac_ext_device and use hdac_device
    instead
  ALSA: hdac: Remove usage of struct hdac_ext_bus and use hdac_bus
    instead
  ALSA: hdac: Remove usage of struct hdac_ext_driver, use hdac_driver
    instead

 include/sound/hdaudio.h                |  21 ++
 include/sound/hdaudio_ext.h            | 119 +++-------
 sound/hda/ext/hdac_ext_bus.c           |  76 +++---
 sound/hda/ext/hdac_ext_controller.c    |  55 +++--
 sound/hda/ext/hdac_ext_stream.c        | 104 ++++-----
 sound/soc/codecs/hdac_hdmi.c           | 415 ++++++++++++++++-----------------
 sound/soc/intel/skylake/skl-messages.c |  50 ++--
 sound/soc/intel/skylake/skl-nhlt.c     |   8 +-
 sound/soc/intel/skylake/skl-pcm.c      | 112 +++++----
 sound/soc/intel/skylake/skl-topology.c |  18 +-
 sound/soc/intel/skylake/skl-topology.h |   6 +-
 sound/soc/intel/skylake/skl.c          | 178 +++++++-------
 sound/soc/intel/skylake/skl.h          |   7 +-
 13 files changed, 522 insertions(+), 647 deletions(-)

-- 
2.7.4