[alsa-devel] [PATCH v3 0/5] add a TDA998x CODEC

Jean-Francois Moine moinejf at free.fr
Sat Feb 1 18:10:27 CET 2014

The TDA998x HDMI transmitter accepts audio input from either I2S or
Theses inputs have different intrinsic constraints and these constraints
may be modified by the audio parameters of the connected video device.

The choice of I2S or S/PDIF may be the done by the user or by automatic
processing (DPCM?) at each audio starting time. This asks for a dynamic
audio input switch in the HDMI driver.

This patch series implements the TDA998x specific CODEC.

A simple function call mechanism is used for exchanges between the
CODEC and the HDMI driver.

Note: the changes in the TDA998x I2C driver are based on my previous
patch series:

- v3
	- move the DT description of the CODEC as a subnode of the
	  TDA998x I2C (Mark Brown remark - is this the right way?)
		- change CODEC loading mechanism
		- simplify tda998x i2c reference search
		- CODEC DT documentation in drm/i2c/tda998x.txt

- v2
	- add ACLK setting and code optimization in patch 1
	- from Mark Brown's remarks in patch 2:
		- don't compile the codec when CONFIG_ALL_CODECS
		- simplify the code about start/stop audio
		- fix coding style errors
		- add audio-port-names associated to audio-ports
	- add audio-port-names in patch 4
	- add patch 5 'adjust the audio CTS_N pre-divider from audio format'
		for the Beaglebone-Black board (Jyri Sarha)

Jean-Francois Moine (5):
  drm/i2c: tda998x: add a function for dynamic audio input switch
  ASoC: tda998x: add a codec driver for the TDA998x
  ASoC: tda998x: add DT documentation of the tda998x CODEC
  ASoC: tda998x: adjust the audio hw parameters from EDID
  ASoC: tda998x: adjust the audio CTS_N pre-divider from audio format

 .../devicetree/bindings/drm/i2c/tda998x.txt        |  17 ++
 drivers/gpu/drm/i2c/tda998x_drv.c                  |  86 +++++-
 include/drm/i2c/tda998x.h                          |  11 +-
 sound/soc/codecs/Kconfig                           |   6 +
 sound/soc/codecs/Makefile                          |   2 +
 sound/soc/codecs/tda998x.c                         | 303 +++++++++++++++++++++
 6 files changed, 419 insertions(+), 6 deletions(-)
 create mode 100644 sound/soc/codecs/tda998x.c


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