[0/6] Add audio support in v4l2 framework

Message

Shengjiu Wang June 29, 2023, 1:37 a.m. UTC

Audio signal processing has the requirement for memory to
memory similar as Video.

This patch is to add this support in v4l2 framework, defined
new buffer type V4L2_BUF_TYPE_AUDIO_CAPTURE and
V4L2_BUF_TYPE_AUDIO_OUTPUT, defined new format v4l2_audio_format
for audio case usage.

The created audio device is named "/dev/audioX".

And add memory to memory support for two kinds of i.MX ASRC
module


Shengjiu Wang (6):
  media: v4l2: Add audio capture and output support
  ASoC: fsl_asrc: define functions for memory to memory usage
  ASoC: fsl_easrc: define functions for memory to memory usage
  ASoC: fsl_asrc: Add memory to memory driver
  ASoC: fsl_asrc: enable memory to memory function
  ASoC: fsl_easrc: enable memory to memory function

 .../media/common/videobuf2/videobuf2-v4l2.c   |   4 +
 drivers/media/v4l2-core/v4l2-dev.c            |  17 +
 drivers/media/v4l2-core/v4l2-ioctl.c          |  52 ++
 include/media/v4l2-dev.h                      |   2 +
 include/media/v4l2-ioctl.h                    |  34 +
 include/uapi/linux/videodev2.h                |  19 +
 sound/soc/fsl/Kconfig                         |  13 +
 sound/soc/fsl/Makefile                        |   2 +
 sound/soc/fsl/fsl_asrc.c                      | 175 +++-
 sound/soc/fsl/fsl_asrc.h                      |   2 +
 sound/soc/fsl/fsl_asrc_common.h               |  54 ++
 sound/soc/fsl/fsl_asrc_m2m.c                  | 878 ++++++++++++++++++
 sound/soc/fsl/fsl_asrc_m2m.h                  |  48 +
 sound/soc/fsl/fsl_easrc.c                     | 255 ++++-
 sound/soc/fsl/fsl_easrc.h                     |   6 +
 15 files changed, 1557 insertions(+), 4 deletions(-)
 create mode 100644 sound/soc/fsl/fsl_asrc_m2m.c
 create mode 100644 sound/soc/fsl/fsl_asrc_m2m.h