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 -- 2.34.1
