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* [alsa-devel] [PATCH 0/4] simple-audio-card codec2codec support
@ 2020-02-13  6:11 Samuel Holland
  2020-02-13  6:11 ` [alsa-devel] [PATCH 1/4] ASoC: codec2codec: avoid invalid/double-free of pcm runtime Samuel Holland
                   ` (3 more replies)
  0 siblings, 4 replies; 13+ messages in thread
From: Samuel Holland @ 2020-02-13  6:11 UTC (permalink / raw)
  To: Liam Girdwood, Mark Brown, Rob Herring, Mark Rutland,
	Jaroslav Kysela, Takashi Iwai, Jonathan Corbet, Jerome Brunet
  Cc: devicetree, alsa-devel, Samuel Holland, linux-kernel, linux-doc

We are currently using simple-audio-card on the Allwinner A64 SoC.
The digital audio codec there (sun8i-codec) has 3 AIFs, one each for the
CPU, the modem, and Bluetooth. Adding support for the secondary AIFs
requires adding codec2codec DAI links.

Since the modem and bt-sco codec DAI drivers only have one set of
possible PCM parameters (namely, 8kHz mono S16LE), there's no real
need for a machine driver to specify the DAI link configuration. The
parameters for these "simple" DAI links can be chosen automatically.

This series adds a single "codec-to-codec" property to the
simple-audio-card binding, which does exactly what it says. It works out
rather nicely without making the device tree binding too complicated.

The first patch fixes a bug I found while implementing this feature.

I tried to reuse as much code as possible, so the middle two patches
refactor a couple of helper functions to be more generic.

Finally, the last patch adds the new feature and its documentation.

Samuel Holland (4):
  ASoC: codec2codec: avoid invalid/double-free of pcm runtime
  ALSA: pcm: Make snd_pcm_limit_hw_rates take hw directly
  ASoC: pcm: Export parameter intersection logic
  ASoC: simple-card: Add support for codec-to-codec dai_links

 .../devicetree/bindings/sound/simple-card.txt |  1 +
 Documentation/sound/soc/codec-to-codec.rst    |  9 ++-
 .../drm/bridge/synopsys/dw-hdmi-ahb-audio.c   |  2 +-
 include/sound/pcm.h                           |  2 +-
 include/sound/simple_card_utils.h             |  1 +
 include/sound/soc.h                           |  3 +
 sound/arm/aaci.c                              |  2 +-
 sound/arm/pxa2xx-ac97.c                       |  2 +-
 sound/core/pcm_misc.c                         | 14 ++---
 sound/firewire/dice/dice-pcm.c                |  2 +-
 sound/firewire/digi00x/digi00x-pcm.c          |  2 +-
 sound/firewire/fireworks/fireworks_pcm.c      |  2 +-
 sound/firewire/motu/motu-pcm.c                |  2 +-
 sound/firewire/tascam/tascam-pcm.c            |  2 +-
 sound/pci/atiixp.c                            |  2 +-
 sound/pci/cs5535audio/cs5535audio_pcm.c       |  4 +-
 sound/pci/hda/hda_controller.c                |  4 +-
 sound/pci/intel8x0.c                          |  2 +-
 sound/pci/sis7019.c                           |  2 +-
 sound/pci/via82xx.c                           |  4 +-
 sound/soc/generic/simple-card-utils.c         | 39 +++++++++++++
 sound/soc/generic/simple-card.c               | 12 ++++
 sound/soc/soc-dapm.c                          |  3 -
 sound/soc/soc-pcm.c                           | 57 +++++++++++++------
 sound/usb/caiaq/audio.c                       |  4 +-
 25 files changed, 130 insertions(+), 49 deletions(-)

-- 
2.24.1

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^ permalink raw reply	[flat|nested] 13+ messages in thread

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Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-02-13  6:11 [alsa-devel] [PATCH 0/4] simple-audio-card codec2codec support Samuel Holland
2020-02-13  6:11 ` [alsa-devel] [PATCH 1/4] ASoC: codec2codec: avoid invalid/double-free of pcm runtime Samuel Holland
2020-02-13  8:37   ` Jerome Brunet
2020-02-13 11:37     ` Mark Brown
2020-02-13 13:37       ` Jerome Brunet
2020-02-13 13:31   ` [alsa-devel] Applied "ASoC: codec2codec: avoid invalid/double-free of pcm runtime" to the asoc tree Mark Brown
2020-02-13  6:11 ` [alsa-devel] [PATCH 2/4] ALSA: pcm: Make snd_pcm_limit_hw_rates take hw directly Samuel Holland
2020-02-13  6:30   ` Takashi Iwai
2020-02-15  3:19     ` Samuel Holland
2020-02-13  6:11 ` [alsa-devel] [PATCH 3/4] ASoC: pcm: Export parameter intersection logic Samuel Holland
2020-02-13  6:11 ` [alsa-devel] [PATCH 4/4] ASoC: simple-card: Add support for codec-to-codec dai_links Samuel Holland
2020-02-13  9:18   ` Jerome Brunet
2020-02-13 11:38     ` Mark Brown

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