[alsa-devel] [PATCH 0/6] HDMI: Implement pcm-per-pin

[Takashi Iwai]

At Wed,  1 Jun 2011 11:14:15 -0600,
Stephen Warren wrote:
> 
> This patchset implements a PCM-per-pin-widget model for all HDMI codecs that
> use the generic codec support. For most existing codecs, there is 1 pin and
> 1 converter per codec, so this change should have no functional impact. For
> some codecs (e.g. GeForce 520, Intel Ibex Peak) there are fewer converters
> than pins, and the default routing is for all pins to be mux'd from a single
> codec, so this patch allows:
> 
> a) Multiple PCMs to be used at once (1 per converter). Previously, only 1
>    PCM was created due to the default muxing.
> 
> b) A direct mapping from PCM device to pin, and hence to ELD data and
>    connected monitor. This should enable simpler/better decisions re: which
>    audio formats are supported for that PCM, since only 1 ELD has to be
>    considered (previously, I think the ELDs other than from the first pin
>    were simply ignored)
> 
> The very first change in the series is actually somewhat unrelated, but I
> noticed it while working on this, and I believe it's a correct change.

Thanks for the patches.  Through a quick glance, all look OK to me.
I'm going to try to review more and apply the patches in the next week.


Takashi


> 
> Stephen Warren (6):
>   ALSA: hda: Gate ELD usage only by whether ELD is valid
>   ALSA: hda: Allow multple SPDIF controls per codec
>   ALSA: hda: Virtualize SPDIF out controls
>   ALSA: hda: Separate generic and non-generic implementations
>   ALSA: hda: hdmi_eld_update_pcm_info: update a stream in place
>   ALSA: hda: HDMI: Support codecs with fewer cvts than pins
> 
>  sound/pci/hda/hda_codec.c      |  139 ++++++---
>  sound/pci/hda/hda_codec.h      |   16 +-
>  sound/pci/hda/hda_eld.c        |   46 ++--
>  sound/pci/hda/hda_intel.c      |    5 +-
>  sound/pci/hda/hda_local.h      |    8 +-
>  sound/pci/hda/patch_analog.c   |    4 +-
>  sound/pci/hda/patch_ca0110.c   |    3 +-
>  sound/pci/hda/patch_cirrus.c   |    3 +-
>  sound/pci/hda/patch_cmedia.c   |    4 +-
>  sound/pci/hda/patch_conexant.c |    1 +
>  sound/pci/hda/patch_hdmi.c     |  704 ++++++++++++++++++++++++----------------
>  sound/pci/hda/patch_realtek.c  |    1 +
>  sound/pci/hda/patch_sigmatel.c |    4 +-
>  sound/pci/hda/patch_via.c      |   13 +-
>  14 files changed, 594 insertions(+), 357 deletions(-)
>