On Mon, Mar 18, 2024 at 11:56 PM Hans Verkuil <hverkuil@xxxxxxxxx> wrote: > > Hi Shengjiu, > > I was about to prepare a pull request for this when I realized that > entries for the new drivers need to be added to the MAINTAINERS file. > > Can you post patches 'v14 17/16' and 'v14/18/16' adding entries for each > new driver? Ok, How about the change below? VIRTUAL MEM2MEM DRIVER FOR AUDIO M: Hans Verkuil <hverkuil@xxxxxxxxx> M: Shengjiu Wang <shengjiu.wang@xxxxxxxxx> L: linux-media@xxxxxxxxxxxxxxx S: Maintained W: https://linuxtv.org T: git git://linuxtv.org/media_tree.git F: drivers/media/test-drivers/vim2m-audio.c NXP ASRC V4L2 MEM2MEM DRIVERS M: Shengjiu Wang <shengjiu.wang@xxxxxxxxx> L: linux-media@xxxxxxxxxxxxxxx S: Maintained W: https://linuxtv.org T: git git://linuxtv.org/media_tree.git F: drivers/media/platform/nxp/imx-asrc.c best regards wang shengjiu > > Thank you, > > Hans > > On 11/03/2024 10:53 am, Shengjiu Wang wrote: > > Audio signal processing also has the requirement for memory to > > memory similar as Video. > > > > This asrc memory to memory (memory ->asrc->memory) case is a non > > real time use case. > > > > User fills the input buffer to the asrc module, after conversion, then asrc > > sends back the output buffer to user. So it is not a traditional ALSA playback > > and capture case. > > > > It is a specific use case, there is no reference in current kernel. > > v4l2 memory to memory is the closed implementation, v4l2 current > > support video, image, radio, tuner, touch devices, so it is not > > complicated to add support for this specific audio case. > > > > Because we had implemented the "memory -> asrc ->i2s device-> codec" > > use case in ALSA. Now the "memory->asrc->memory" needs > > to reuse the code in asrc driver, so the first 3 patches is for refining > > the code to make it can be shared by the "memory->asrc->memory" > > driver. > > > > The main change is in the v4l2 side, A /dev/vl4-audioX will be created, > > user applications only use the ioctl of v4l2 framework. > > > > Other change is to add memory to memory support for two kinds of i.MX ASRC > > module. > > > > changes in v14: > > - document the reservation of 'AUXX' fourcc format. > > - add v4l2_audfmt_to_fourcc() definition. > > > > changes in v13 > > - change 'pixelformat' to 'audioformat' in dev-audio-mem2mem.rst > > - add more description for clock drift in ext-ctrls-audio-m2m.rst > > - Add "media: v4l2-ctrls: add support for fraction_bits" from Hans > > to avoid build issue for kernel test robot > > > > changes in v12 > > - minor changes according to comments > > - drop min_buffers_needed = 1 and V4L2_CTRL_FLAG_UPDATE flag > > - drop bus_info > > > > changes in v11 > > - add add-fixed-point-test-controls in vivid. > > - add v4l2_ctrl_fp_compose() helper function for min and max > > > > changes in v10 > > - remove FIXED_POINT type > > - change code base on media: v4l2-ctrls: add support for fraction_bits > > - fix issue reported by kernel test robot > > - remove module_alias > > > > changes in v9: > > - add MEDIA_ENT_F_PROC_AUDIO_RESAMPLER. > > - add MEDIA_INTF_T_V4L_AUDIO > > - add media controller support > > - refine the vim2m-audio to support 8k<->16k conversion. > > > > changes in v8: > > - refine V4L2_CAP_AUDIO_M2M to be 0x00000008 > > - update doc for FIXED_POINT > > - address comments for imx-asrc > > > > changes in v7: > > - add acked-by from Mark > > - separate commit for fixed point, m2m audio class, audio rate controls > > - use INTEGER_MENU for rate, FIXED_POINT for rate offset > > - remove used fmts > > - address other comments for Hans > > > > changes in v6: > > - use m2m_prepare/m2m_unprepare/m2m_start/m2m_stop to replace > > m2m_start_part_one/m2m_stop_part_one, m2m_start_part_two/m2m_stop_part_two. > > - change V4L2_CTRL_TYPE_ASRC_RATE to V4L2_CTRL_TYPE_FIXED_POINT > > - fix warning by kernel test rebot > > - remove some unused format V4L2_AUDIO_FMT_XX > > - Get SNDRV_PCM_FORMAT from V4L2_AUDIO_FMT in driver. > > - rename audm2m to viaudm2m. > > > > changes in v5: > > - remove V4L2_AUDIO_FMT_LPCM > > - define audio pixel format like V4L2_AUDIO_FMT_S8... > > - remove rate and format in struct v4l2_audio_format. > > - Add V4L2_CID_ASRC_SOURCE_RATE and V4L2_CID_ASRC_DEST_RATE controls > > - updata document accordingly. > > > > changes in v4: > > - update document style > > - separate V4L2_AUDIO_FMT_LPCM and V4L2_CAP_AUDIO_M2M in separate commit > > > > changes in v3: > > - Modify documents for adding audio m2m support > > - Add audio virtual m2m driver > > - Defined V4L2_AUDIO_FMT_LPCM format type for audio. > > - Defined V4L2_CAP_AUDIO_M2M capability type for audio m2m case. > > - with modification in v4l-utils, pass v4l2-compliance test. > > > > changes in v2: > > - decouple the implementation in v4l2 and ALSA > > - implement the memory to memory driver as a platfrom driver > > and move it to driver/media > > - move fsl_asrc_common.h to include/sound folder > > > > Hans Verkuil (1): > > media: v4l2-ctrls: add support for fraction_bits > > > > Shengjiu Wang (15): > > ASoC: fsl_asrc: define functions for memory to memory usage > > ASoC: fsl_easrc: define functions for memory to memory usage > > ASoC: fsl_asrc: move fsl_asrc_common.h to include/sound > > ASoC: fsl_asrc: register m2m platform device > > ASoC: fsl_easrc: register m2m platform device > > media: uapi: Add V4L2_CAP_AUDIO_M2M capability flag > > media: v4l2: Add audio capture and output support > > media: uapi: Define audio sample format fourcc type > > media: uapi: Add V4L2_CTRL_CLASS_M2M_AUDIO > > media: uapi: Add audio rate controls support > > media: uapi: Declare interface types for Audio > > media: uapi: Add an entity type for audio resampler > > media: vivid: add fixed point test controls > > media: imx-asrc: Add memory to memory driver > > media: vim2m-audio: add virtual driver for audio memory to memory > > > > .../media/mediactl/media-types.rst | 11 + > > .../userspace-api/media/v4l/buffer.rst | 6 + > > .../userspace-api/media/v4l/common.rst | 1 + > > .../media/v4l/dev-audio-mem2mem.rst | 71 + > > .../userspace-api/media/v4l/devices.rst | 1 + > > .../media/v4l/ext-ctrls-audio-m2m.rst | 59 + > > .../userspace-api/media/v4l/pixfmt-audio.rst | 100 ++ > > .../userspace-api/media/v4l/pixfmt.rst | 1 + > > .../media/v4l/vidioc-enum-fmt.rst | 2 + > > .../media/v4l/vidioc-g-ext-ctrls.rst | 4 + > > .../userspace-api/media/v4l/vidioc-g-fmt.rst | 4 + > > .../media/v4l/vidioc-querycap.rst | 3 + > > .../media/v4l/vidioc-queryctrl.rst | 11 +- > > .../media/videodev2.h.rst.exceptions | 3 + > > .../media/common/videobuf2/videobuf2-v4l2.c | 4 + > > drivers/media/platform/nxp/Kconfig | 13 + > > drivers/media/platform/nxp/Makefile | 1 + > > drivers/media/platform/nxp/imx-asrc.c | 1256 +++++++++++++++++ > > drivers/media/test-drivers/Kconfig | 10 + > > drivers/media/test-drivers/Makefile | 1 + > > drivers/media/test-drivers/vim2m-audio.c | 793 +++++++++++ > > drivers/media/test-drivers/vivid/vivid-core.h | 2 + > > .../media/test-drivers/vivid/vivid-ctrls.c | 26 + > > drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 + > > drivers/media/v4l2-core/v4l2-ctrls-api.c | 1 + > > drivers/media/v4l2-core/v4l2-ctrls-core.c | 93 +- > > drivers/media/v4l2-core/v4l2-ctrls-defs.c | 10 + > > drivers/media/v4l2-core/v4l2-dev.c | 21 + > > drivers/media/v4l2-core/v4l2-ioctl.c | 66 + > > drivers/media/v4l2-core/v4l2-mem2mem.c | 13 +- > > include/media/v4l2-ctrls.h | 13 +- > > include/media/v4l2-dev.h | 2 + > > include/media/v4l2-ioctl.h | 34 + > > .../fsl => include/sound}/fsl_asrc_common.h | 60 + > > include/uapi/linux/media.h | 2 + > > include/uapi/linux/v4l2-controls.h | 9 + > > include/uapi/linux/videodev2.h | 50 +- > > sound/soc/fsl/fsl_asrc.c | 144 ++ > > sound/soc/fsl/fsl_asrc.h | 4 +- > > sound/soc/fsl/fsl_asrc_dma.c | 2 +- > > sound/soc/fsl/fsl_easrc.c | 233 +++ > > sound/soc/fsl/fsl_easrc.h | 6 +- > > 42 files changed, 3128 insertions(+), 27 deletions(-) > > create mode 100644 Documentation/userspace-api/media/v4l/dev-audio-mem2mem.rst > > create mode 100644 Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst > > create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-audio.rst > > create mode 100644 drivers/media/platform/nxp/imx-asrc.c > > create mode 100644 drivers/media/test-drivers/vim2m-audio.c > > rename {sound/soc/fsl => include/sound}/fsl_asrc_common.h (60%) > > >
