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[v2,00/34] Qualcomm video encoder and decoder driver

Message ID 1702899149-21321-1-git-send-email-quic_dikshita@quicinc.com (mailing list archive)
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Series Qualcomm video encoder and decoder driver | expand

Message

Dikshita Agarwal Dec. 18, 2023, 11:31 a.m. UTC
This patch series introduces support for Qualcomm new video acceleration
hardware architecture, used for video stream decoding/encoding. This driver
is based on new communication protocol between video hardware and application
processor.
This driver comes with below capabilities:
- V4L2 complaint video driver with M2M and STREAMING capability.
- Supports H264, H265, VP9 decoders.
- Supports H264, H265 encoders.
This driver comes with below features:
- Centralized resource and memory management.
- Centralized management of core and instance states.
- Defines platform specific capabilities and features. As a results, it provides
  a single point of control to enable/disable a given feature depending on 
  specific platform capabilities.
- Handles hardware interdependent configurations. For a given configuration from
  client, the driver checks for hardware dependent configuration/s and updates
  the same.
- Handles multiple complex video scenarios involving state transitions - DRC,
  Drain, Seek, back to back DRC, DRC during Drain sequence, DRC during Seek
  sequence.
- Introduces a flexible way for driver to subscribe for any property with
  hardware. Hardware would inform driver with those subscribed property with any
  change in value.
- Introduces performance (clock and bus) model based on new hardware
  architecture.
- Introduces multi thread safe design to handle communication between client and
  hardware.
- Adapts encoder quality improvements available in new hardware architecture.
- Implements asynchronous communication with hardware to achieve better
  experience in low latency usecases.
- Supports multi stage hardware architecture for encode/decode.
- Output and capture planes are controlled independently. Thereby providing a
  way to reconfigure individual plane.
- Hardware packetization layer supports synchronization between configuration
  packet and data packet.
- Introduces a flexibility to receive a hardware response for a given command
  packet.
- Native hardware support of LAST flag which is mandatory to align with port
  reconfiguration and DRAIN sequence as per V4L guidelines.
- Native hardware support for drain sequence.

Changes done since v1[1]:
- Patches are created as logical split instead of file by file.
- Extracted common functionality between venus and iris driver and placed them
  under common folder vcodec.
- Flattened directory structure.
- Restructured the code in a simplified layer architecture.
- Implemented runtime PM, and dropped explicit power collapse thread in driver.
- Moved to standard kernel log print api.
- Simplified the bus and clock calculation logic.
- Removed debug features like dma tracker, frame stats, debugfs.
- Merged v4l2 and vidc layer as vidc in driver.
- Removed separate probe for context bank.
- Use of_device_get_match_data to get platform data.
- Replaced complex macros with inline functions.
- Migrated venus to iris names.
- Addressed many other comments received on [1].

[1]: https://patchwork.kernel.org/project/linux-media/list/?series=770581 

Patch 1, adds dt binding for iris driver.

Patches 2-4, are introducing vcodec folder and moving common APIs like fw
load/unload, buffer size calcualtions, read/write to shared queues to common
files which are being used by both venus and iris drivers.
This also moves the venus driver folder to vcodec folder.

Patch 5, adds the maintainers for iris driver.

Patch 6-29, adds core iris driver and enable decoder.

Patch 30-34, enable encoder functionality in iris driver.

Static tools like checkpatch, smatch, dt_binding_check, sparse and Coccinelle 
run successfully with this driver. 

 The output of v4l2-compliance test looks like: 

v4l2-compliance SHA: not available, 64 bits
 
Cannot open device /dev/vido0, exiting.
root@qemuarm64:/usr/bin# ./v4l2-compliance -d /dev/video0
v4l2-compliance SHA: not available, 64 bits
 
Compliance test for iris_driver device /dev/video0:
 
Driver Info:
        Driver name      : iris_driver
        Card type        : iris_decoder
        Bus info         : platform:iris_bus
        Driver version   : 6.6.0
        Capabilities     : 0x84204000
                Video Memory-to-Memory Multiplanar
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps      : 0x04204000
                Video Memory-to-Memory Multiplanar
                Streaming
                Extended Pix Format
 
Required ioctls:
        test VIDIOC_QUERYCAP: OK
 
Allow for multiple opens:
        test second /dev/video0 open: OK
        test VIDIOC_QUERYCAP: OK
        test VIDIOC_G/S_PRIORITY: OK
                fail: ../../../v4l-utils-1.18.1/utils/v4l2-compliance/v4l2-compliance.cpp(724): !ok
        test for unlimited opens: FAIL
 
Debug ioctls:
        test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
        test VIDIOC_LOG_STATUS: OK (Not Supported)
 
Input ioctls:
        test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
        test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
        test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
        test VIDIOC_ENUMAUDIO: OK (Not Supported)
        test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
        test VIDIOC_G/S_AUDIO: OK (Not Supported)
        Inputs: 0 Audio Inputs: 0 Tuners: 0
 
Output ioctls:
        test VIDIOC_G/S_MODULATOR: OK (Not Supported)
        test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
        test VIDIOC_ENUMAUDOUT: OK (Not Supported)
        test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
        test VIDIOC_G/S_AUDOUT: OK (Not Supported)
        Outputs: 0 Audio Outputs: 0 Modulators: 0
 
Input/Output configuration ioctls:
        test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
        test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
        test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
        test VIDIOC_G/S_EDID: OK (Not Supported)
 
Control ioctls:
        test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
        test VIDIOC_QUERYCTRL: OK
        test VIDIOC_G/S_CTRL: OK
        test VIDIOC_G/S/TRY_EXT_CTRLS: OK
        test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
        test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
        Standard Controls: 48 Private Controls: 0
 
Format ioctls:
        test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
        test VIDIOC_G/S_PARM: OK (Not Supported)
        test VIDIOC_G_FBUF: OK (Not Supported)
        test VIDIOC_G_FMT: OK
        test VIDIOC_TRY_FMT: OK
        test VIDIOC_S_FMT: OK
        test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
        test Cropping: OK
        test Composing: OK
        test Scaling: OK
 
Codec ioctls:
        test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
        test VIDIOC_G_ENC_INDEX: OK (Not Supported)
        test VIDIOC_(TRY_)DECODER_CMD: OK
 
Buffer ioctls:
        testVIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
        test VIDIOC_EXPBUF: OK (Not Supported)
        test Requests: OK (Not Supported)
 
Total for iris_driver device /dev/video0: 44, Succeeded: 43, Failed: 1, Warnings: 0
 
Compliance test for iris_driver device /dev/video1:
 
Driver Info:
        Driver name      : iris_driver
        Card type        : iris_encoder
        Bus info         : platform:iris_bus
        Driver version   : 6.6.0
        Capabilities     : 0x84204000
                Video Memory-to-Memory Multiplanar
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps      : 0x04204000
                Video Memory-to-Memory Multiplanar
                Streaming
                Extended Pix Format
 
Required ioctls:
        test VIDIOC_QUERYCAP: OK
 
Allow for multiple opens:
        test second /dev/video1 open: OK
        test VIDIOC_QUERYCAP: OK
        test VIDIOC_G/S_PRIORITY: OK
                fail: ../../../v4l-utils-1.18.1/utils/v4l2-compliance/v4l2-compliance.cpp(724): !ok
        test for unlimited opens: FAIL
 
Debug ioctls:
        test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
        test VIDIOC_LOG_STATUS: OK (Not Supported)
 
Input ioctls:
        test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
        test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
        test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
        test VIDIOC_ENUMAUDIO: OK (Not Supported)
        test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
        test VIDIOC_G/S_AUDIO: OK (Not Supported)
        Inputs: 0 Audio Inputs: 0 Tuners: 0
 
Output ioctls:
        test VIDIOC_G/S_MODULATOR: OK (Not Supported)
        test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
        test VIDIOC_ENUMAUDOUT: OK (Not Supported)
        test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
        test VIDIOC_G/S_AUDOUT: OK (Not Supported)
        Outputs: 0 Audio Outputs: 0 Modulators: 0
 
Input/Output configuration ioctls:
        test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
        test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
        test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
        test VIDIOC_G/S_EDID: OK (Not Supported)
 
Control ioctls:
        test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
        test VIDIOC_QUERYCTRL: OK
        test VIDIOC_G/S_CTRL: OK
        test VIDIOC_G/S/TRY_EXT_CTRLS: OK
        test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
        test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
        Standard Controls: 48 Private Controls: 0
 
Format ioctls:
        test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
        test VIDIOC_G/S_PARM: OK
        test VIDIOC_G_FBUF: OK (Not Supported)
        test VIDIOC_G_FMT: OK
        test VIDIOC_TRY_FMT: OK
        test VIDIOC_S_FMT: OK
        test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
        test Cropping: OK
        test Composing: OK
        test Scaling: OK (Not Supported)
 
Codec ioctls:
        test VIDIOC_(TRY_)ENCODER_CMD: OK
        test VIDIOC_G_ENC_INDEX: OK (Not Supported)
        test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
 
Buffer ioctls:
        test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
        test VIDIOC_EXPBUF: OK (Not Supported)
        test Requests: OK (Not Supported)
 
Total for iris_driver device /dev/video1: 44, Succeeded: 43, Failed: 1, Warnings: 0

Dikshita Agarwal (27):
  media: introduce common helpers for video firmware handling
  media: introduce common helpers for queues handling
  media: introduce common helpers for buffer size calculation
  dt-bindings: media: Add sm8550 dt schema
  media: MAINTAINERS: Add Qualcomm Iris video accelerator driver
  media: iris: register video device to platform driver
  media: iris: initialize power resources
  media: iris: introduce state machine for iris core
  media: iris: initialize shared queues for host and firmware
    communication
  media: iris: add PIL functionality for video firmware
  media: iris: introduce packetization layer for creating HFI packets
  media: iris: add video processing unit(VPU) specific register handling
  media: iris: introduce platform specific capabilities for core and
    instance
  media: iris: add handling for interrupt service routine(ISR) invoked
    by hardware
  media: iris: implement iris v4l2_ctrl_ops and prepare capabilities
  media: iris: implement vb2_ops queue setup
  media: iris: implement HFI to queue and release buffers
  media: iris: add video hardware internal buffer count and size
    calculation
  media: iris: implement internal buffer management
  media: iris: introduce instance states
  media: iris: implement vb2 streaming ops on capture and output planes
  media: iris: implement vb2 ops for buf_queue and firmware response
  media: iris: register video encoder device to platform driver
  media: iris: add platform specific instance capabilities for encoder
  media: iris: implement iris v4l2 ioctl ops supported by encoder
  media: iris: add vb2 streaming and buffer ops for encoder
  media: iris: add power management for encoder

Vikash Garodia (7):
  media: iris: implement iris v4l2 file ops
  media: iris: introduce and implement iris vb2 mem ops
  media: iris: implement iris v4l2 ioctl ops supported by decoder
  media: iris: subscribe input and output properties to firmware
  media: iris: subscribe src change and handle firmware responses
  media: iris: add instance sub states and implement DRC and Drain
    sequence
  media: iris: implement power management

 .../bindings/media/qcom,sm8550-iris.yaml           |  177 ++
 MAINTAINERS                                        |   11 +
 drivers/media/platform/qcom/Kconfig                |    3 +-
 drivers/media/platform/qcom/Makefile               |    3 +-
 drivers/media/platform/qcom/vcodec/buffers.c       |  103 ++
 drivers/media/platform/qcom/vcodec/buffers.h       |   15 +
 drivers/media/platform/qcom/vcodec/firmware.c      |  147 ++
 drivers/media/platform/qcom/vcodec/firmware.h      |   21 +
 drivers/media/platform/qcom/vcodec/hfi_queue.c     |  258 +++
 drivers/media/platform/qcom/vcodec/hfi_queue.h     |  129 ++
 drivers/media/platform/qcom/vcodec/iris/Kconfig    |   13 +
 drivers/media/platform/qcom/vcodec/iris/Makefile   |   26 +
 .../media/platform/qcom/vcodec/iris/hfi_defines.h  |  386 +++++
 .../media/platform/qcom/vcodec/iris/iris_buffer.c  |  833 +++++++++
 .../media/platform/qcom/vcodec/iris/iris_buffer.h  |   65 +
 .../media/platform/qcom/vcodec/iris/iris_common.h  |  147 ++
 .../media/platform/qcom/vcodec/iris/iris_core.c    |  110 ++
 .../media/platform/qcom/vcodec/iris/iris_core.h    |  121 ++
 .../media/platform/qcom/vcodec/iris/iris_ctrls.c   | 1782 ++++++++++++++++++++
 .../media/platform/qcom/vcodec/iris/iris_ctrls.h   |   71 +
 .../media/platform/qcom/vcodec/iris/iris_helpers.c | 1099 ++++++++++++
 .../media/platform/qcom/vcodec/iris/iris_helpers.h |   68 +
 drivers/media/platform/qcom/vcodec/iris/iris_hfi.c |  917 ++++++++++
 drivers/media/platform/qcom/vcodec/iris/iris_hfi.h |   47 +
 .../platform/qcom/vcodec/iris/iris_hfi_packet.c    |  729 ++++++++
 .../platform/qcom/vcodec/iris/iris_hfi_packet.h    |  118 ++
 .../platform/qcom/vcodec/iris/iris_hfi_response.c  | 1097 ++++++++++++
 .../platform/qcom/vcodec/iris/iris_hfi_response.h  |   20 +
 .../platform/qcom/vcodec/iris/iris_instance.h      |  106 ++
 .../media/platform/qcom/vcodec/iris/iris_power.c   |  178 ++
 .../media/platform/qcom/vcodec/iris/iris_power.h   |   15 +
 .../media/platform/qcom/vcodec/iris/iris_probe.c   |  357 ++++
 .../media/platform/qcom/vcodec/iris/iris_state.c   |  453 +++++
 .../media/platform/qcom/vcodec/iris/iris_state.h   |   78 +
 drivers/media/platform/qcom/vcodec/iris/iris_vb2.c |  457 +++++
 drivers/media/platform/qcom/vcodec/iris/iris_vb2.h |   28 +
 .../media/platform/qcom/vcodec/iris/iris_vdec.c    | 1211 +++++++++++++
 .../media/platform/qcom/vcodec/iris/iris_vdec.h    |   25 +
 .../media/platform/qcom/vcodec/iris/iris_venc.c    |  948 +++++++++++
 .../media/platform/qcom/vcodec/iris/iris_venc.h    |   27 +
 .../media/platform/qcom/vcodec/iris/iris_vidc.c    | 1419 ++++++++++++++++
 .../media/platform/qcom/vcodec/iris/iris_vidc.h    |   15 +
 .../platform/qcom/vcodec/iris/platform_common.c    |   29 +
 .../platform/qcom/vcodec/iris/platform_common.h    |  323 ++++
 .../platform/qcom/vcodec/iris/platform_sm8550.c    | 1190 +++++++++++++
 .../media/platform/qcom/vcodec/iris/resources.c    |  506 ++++++
 .../media/platform/qcom/vcodec/iris/resources.h    |   44 +
 .../media/platform/qcom/vcodec/iris/vpu_common.c   |  158 ++
 .../media/platform/qcom/vcodec/iris/vpu_common.h   |   52 +
 .../media/platform/qcom/vcodec/iris/vpu_iris3.c    |  568 +++++++
 .../media/platform/qcom/vcodec/iris/vpu_iris3.h    |   13 +
 .../platform/qcom/vcodec/iris/vpu_iris3_buffer.c   |  395 +++++
 .../platform/qcom/vcodec/iris/vpu_iris3_buffer.h   | 1469 ++++++++++++++++
 .../platform/qcom/vcodec/iris/vpu_iris3_power.c    |  148 ++
 .../platform/qcom/vcodec/iris/vpu_iris3_power.h    |   13 +
 .../media/platform/qcom/{ => vcodec}/venus/Kconfig |    0
 .../platform/qcom/{ => vcodec}/venus/Makefile      |    5 +-
 .../media/platform/qcom/{ => vcodec}/venus/core.c  |  102 +-
 .../media/platform/qcom/{ => vcodec}/venus/core.h  |    0
 .../media/platform/qcom/{ => vcodec}/venus/dbgfs.c |    0
 .../media/platform/qcom/{ => vcodec}/venus/dbgfs.h |    0
 .../platform/qcom/vcodec/venus/firmware_no_tz.c    |  194 +++
 .../platform/qcom/vcodec/venus/firmware_no_tz.h    |   19 +
 .../platform/qcom/{ => vcodec}/venus/helpers.c     |  172 +-
 .../platform/qcom/{ => vcodec}/venus/helpers.h     |    2 +-
 .../media/platform/qcom/{ => vcodec}/venus/hfi.c   |    0
 .../media/platform/qcom/{ => vcodec}/venus/hfi.h   |    0
 .../platform/qcom/{ => vcodec}/venus/hfi_cmds.c    |    0
 .../platform/qcom/{ => vcodec}/venus/hfi_cmds.h    |    0
 .../platform/qcom/{ => vcodec}/venus/hfi_helper.h  |    0
 .../platform/qcom/{ => vcodec}/venus/hfi_msgs.c    |    0
 .../platform/qcom/{ => vcodec}/venus/hfi_msgs.h    |    0
 .../platform/qcom/{ => vcodec}/venus/hfi_parser.c  |    0
 .../platform/qcom/{ => vcodec}/venus/hfi_parser.h  |    0
 .../qcom/{ => vcodec}/venus/hfi_plat_bufs.h        |    4 +-
 .../qcom/{ => vcodec}/venus/hfi_plat_bufs_v6.c     |   10 +-
 .../qcom/{ => vcodec}/venus/hfi_platform.c         |    0
 .../qcom/{ => vcodec}/venus/hfi_platform.h         |    0
 .../qcom/{ => vcodec}/venus/hfi_platform_v4.c      |    0
 .../qcom/{ => vcodec}/venus/hfi_platform_v6.c      |    0
 .../platform/qcom/{ => vcodec}/venus/hfi_venus.c   |  521 +-----
 .../platform/qcom/{ => vcodec}/venus/hfi_venus.h   |    0
 .../qcom/{ => vcodec}/venus/hfi_venus_io.h         |    0
 .../platform/qcom/{ => vcodec}/venus/pm_helpers.c  |    0
 .../platform/qcom/{ => vcodec}/venus/pm_helpers.h  |    0
 .../media/platform/qcom/{ => vcodec}/venus/vdec.c  |    5 +-
 .../media/platform/qcom/{ => vcodec}/venus/vdec.h  |    0
 .../platform/qcom/{ => vcodec}/venus/vdec_ctrls.c  |    0
 .../media/platform/qcom/{ => vcodec}/venus/venc.c  |    0
 .../media/platform/qcom/{ => vcodec}/venus/venc.h  |    0
 .../platform/qcom/{ => vcodec}/venus/venc_ctrls.c  |    0
 drivers/media/platform/qcom/venus/firmware.c       |  363 ----
 drivers/media/platform/qcom/venus/firmware.h       |   26 -
 93 files changed, 19175 insertions(+), 989 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml
 create mode 100644 drivers/media/platform/qcom/vcodec/buffers.c
 create mode 100644 drivers/media/platform/qcom/vcodec/buffers.h
 create mode 100644 drivers/media/platform/qcom/vcodec/firmware.c
 create mode 100644 drivers/media/platform/qcom/vcodec/firmware.h
 create mode 100644 drivers/media/platform/qcom/vcodec/hfi_queue.c
 create mode 100644 drivers/media/platform/qcom/vcodec/hfi_queue.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/Kconfig
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/Makefile
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/hfi_defines.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_buffer.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_buffer.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_common.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_core.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_core.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_ctrls.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_ctrls.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_helpers.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_helpers.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_packet.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_packet.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_response.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_response.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_instance.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_power.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_power.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_probe.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_state.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_state.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vb2.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vb2.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vdec.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vdec.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_venc.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_venc.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vidc.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vidc.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_common.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_common.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_sm8550.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/resources.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/resources.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_common.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_common.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_buffer.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_buffer.h
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_power.c
 create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_power.h
 rename drivers/media/platform/qcom/{ => vcodec}/venus/Kconfig (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/Makefile (75%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/core.c (91%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/core.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/dbgfs.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/dbgfs.h (100%)
 create mode 100644 drivers/media/platform/qcom/vcodec/venus/firmware_no_tz.c
 create mode 100644 drivers/media/platform/qcom/vcodec/venus/firmware_no_tz.h
 rename drivers/media/platform/qcom/{ => vcodec}/venus/helpers.c (90%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/helpers.h (98%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_cmds.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_cmds.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_helper.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_msgs.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_msgs.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_parser.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_parser.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_plat_bufs.h (94%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_plat_bufs_v6.c (99%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform_v4.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform_v6.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus.c (73%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus_io.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/pm_helpers.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/pm_helpers.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec.c (99%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec_ctrls.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/venc.c (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/venc.h (100%)
 rename drivers/media/platform/qcom/{ => vcodec}/venus/venc_ctrls.c (100%)
 delete mode 100644 drivers/media/platform/qcom/venus/firmware.c
 delete mode 100644 drivers/media/platform/qcom/venus/firmware.h

Comments

Dikshita Agarwal Dec. 18, 2023, 12:09 p.m. UTC | #1
On 12/18/2023 5:01 PM, Dikshita Agarwal wrote:
> This patch series introduces support for Qualcomm new video acceleration
> hardware architecture, used for video stream decoding/encoding. This driver
> is based on new communication protocol between video hardware and application
> processor.
> This driver comes with below capabilities:
> - V4L2 complaint video driver with M2M and STREAMING capability.
> - Supports H264, H265, VP9 decoders.
> - Supports H264, H265 encoders.
> This driver comes with below features:
> - Centralized resource and memory management.
> - Centralized management of core and instance states.
> - Defines platform specific capabilities and features. As a results, it provides
>   a single point of control to enable/disable a given feature depending on 
>   specific platform capabilities.
> - Handles hardware interdependent configurations. For a given configuration from
>   client, the driver checks for hardware dependent configuration/s and updates
>   the same.
> - Handles multiple complex video scenarios involving state transitions - DRC,
>   Drain, Seek, back to back DRC, DRC during Drain sequence, DRC during Seek
>   sequence.
> - Introduces a flexible way for driver to subscribe for any property with
>   hardware. Hardware would inform driver with those subscribed property with any
>   change in value.
> - Introduces performance (clock and bus) model based on new hardware
>   architecture.
> - Introduces multi thread safe design to handle communication between client and
>   hardware.
> - Adapts encoder quality improvements available in new hardware architecture.
> - Implements asynchronous communication with hardware to achieve better
>   experience in low latency usecases.
> - Supports multi stage hardware architecture for encode/decode.
> - Output and capture planes are controlled independently. Thereby providing a
>   way to reconfigure individual plane.
> - Hardware packetization layer supports synchronization between configuration
>   packet and data packet.
> - Introduces a flexibility to receive a hardware response for a given command
>   packet.
> - Native hardware support of LAST flag which is mandatory to align with port
>   reconfiguration and DRAIN sequence as per V4L guidelines.
> - Native hardware support for drain sequence.
> 
> Changes done since v1[1]:
> - Patches are created as logical split instead of file by file.
> - Extracted common functionality between venus and iris driver and placed them
>   under common folder vcodec.
> - Flattened directory structure.
> - Restructured the code in a simplified layer architecture.
> - Implemented runtime PM, and dropped explicit power collapse thread in driver.
> - Moved to standard kernel log print api.
> - Simplified the bus and clock calculation logic.
> - Removed debug features like dma tracker, frame stats, debugfs.
> - Merged v4l2 and vidc layer as vidc in driver.
> - Removed separate probe for context bank.
> - Use of_device_get_match_data to get platform data.
> - Replaced complex macros with inline functions.
> - Migrated venus to iris names.
> - Addressed many other comments received on [1].
> 
> [1]: https://patchwork.kernel.org/project/linux-media/list/?series=770581 
> 
> Patch 1, adds dt binding for iris driver.
> 
> Patches 2-4, are introducing vcodec folder and moving common APIs like fw
> load/unload, buffer size calcualtions, read/write to shared queues to common
> files which are being used by both venus and iris drivers.
> This also moves the venus driver folder to vcodec folder.
> 
> Patch 5, adds the maintainers for iris driver.
> 
> Patch 6-29, adds core iris driver and enable decoder.
> 
> Patch 30-34, enable encoder functionality in iris driver.
> 

Made a mistake while explaining the patches.
Please find the correct order below:

Patches 1-3, are introducing vcodec folder and moving common APIs like fw
load/unload, buffer size calcualtions, read/write to shared queues to
common files which are being used by both venus and iris drivers.
This also moves the venus driver folder to vcodec folder.

Patch 4, adds dt binding for iris driver.

Patch 5, adds the maintainers for iris driver.

Patch 6-29, adds core iris driver and enable decoder.

Patch 30-34, enable encoder functionality in iris driver.

Thanks,
Dikshita

> Static tools like checkpatch, smatch, dt_binding_check, sparse and Coccinelle 
> run successfully with this driver. 
> 
>  The output of v4l2-compliance test looks like: 
> 
> v4l2-compliance SHA: not available, 64 bits
>  
> Cannot open device /dev/vido0, exiting.
> root@qemuarm64:/usr/bin# ./v4l2-compliance -d /dev/video0
> v4l2-compliance SHA: not available, 64 bits
>  
> Compliance test for iris_driver device /dev/video0:
>  
> Driver Info:
>         Driver name      : iris_driver
>         Card type        : iris_decoder
>         Bus info         : platform:iris_bus
>         Driver version   : 6.6.0
>         Capabilities     : 0x84204000
>                 Video Memory-to-Memory Multiplanar
>                 Streaming
>                 Extended Pix Format
>                 Device Capabilities
>         Device Caps      : 0x04204000
>                 Video Memory-to-Memory Multiplanar
>                 Streaming
>                 Extended Pix Format
>  
> Required ioctls:
>         test VIDIOC_QUERYCAP: OK
>  
> Allow for multiple opens:
>         test second /dev/video0 open: OK
>         test VIDIOC_QUERYCAP: OK
>         test VIDIOC_G/S_PRIORITY: OK
>                 fail: ../../../v4l-utils-1.18.1/utils/v4l2-compliance/v4l2-compliance.cpp(724): !ok
>         test for unlimited opens: FAIL
>  
> Debug ioctls:
>         test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
>         test VIDIOC_LOG_STATUS: OK (Not Supported)
>  
> Input ioctls:
>         test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>         test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
>         test VIDIOC_ENUMAUDIO: OK (Not Supported)
>         test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
>         test VIDIOC_G/S_AUDIO: OK (Not Supported)
>         Inputs: 0 Audio Inputs: 0 Tuners: 0
>  
> Output ioctls:
>         test VIDIOC_G/S_MODULATOR: OK (Not Supported)
>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>         test VIDIOC_ENUMAUDOUT: OK (Not Supported)
>         test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
>         test VIDIOC_G/S_AUDOUT: OK (Not Supported)
>         Outputs: 0 Audio Outputs: 0 Modulators: 0
>  
> Input/Output configuration ioctls:
>         test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
>         test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
>         test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
>         test VIDIOC_G/S_EDID: OK (Not Supported)
>  
> Control ioctls:
>         test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
>         test VIDIOC_QUERYCTRL: OK
>         test VIDIOC_G/S_CTRL: OK
>         test VIDIOC_G/S/TRY_EXT_CTRLS: OK
>         test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
>         test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
>         Standard Controls: 48 Private Controls: 0
>  
> Format ioctls:
>         test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
>         test VIDIOC_G/S_PARM: OK (Not Supported)
>         test VIDIOC_G_FBUF: OK (Not Supported)
>         test VIDIOC_G_FMT: OK
>         test VIDIOC_TRY_FMT: OK
>         test VIDIOC_S_FMT: OK
>         test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
>         test Cropping: OK
>         test Composing: OK
>         test Scaling: OK
>  
> Codec ioctls:
>         test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
>         test VIDIOC_G_ENC_INDEX: OK (Not Supported)
>         test VIDIOC_(TRY_)DECODER_CMD: OK
>  
> Buffer ioctls:
>         testVIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
>         test VIDIOC_EXPBUF: OK (Not Supported)
>         test Requests: OK (Not Supported)
>  
> Total for iris_driver device /dev/video0: 44, Succeeded: 43, Failed: 1, Warnings: 0
>  
> Compliance test for iris_driver device /dev/video1:
>  
> Driver Info:
>         Driver name      : iris_driver
>         Card type        : iris_encoder
>         Bus info         : platform:iris_bus
>         Driver version   : 6.6.0
>         Capabilities     : 0x84204000
>                 Video Memory-to-Memory Multiplanar
>                 Streaming
>                 Extended Pix Format
>                 Device Capabilities
>         Device Caps      : 0x04204000
>                 Video Memory-to-Memory Multiplanar
>                 Streaming
>                 Extended Pix Format
>  
> Required ioctls:
>         test VIDIOC_QUERYCAP: OK
>  
> Allow for multiple opens:
>         test second /dev/video1 open: OK
>         test VIDIOC_QUERYCAP: OK
>         test VIDIOC_G/S_PRIORITY: OK
>                 fail: ../../../v4l-utils-1.18.1/utils/v4l2-compliance/v4l2-compliance.cpp(724): !ok
>         test for unlimited opens: FAIL
>  
> Debug ioctls:
>         test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
>         test VIDIOC_LOG_STATUS: OK (Not Supported)
>  
> Input ioctls:
>         test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>         test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
>         test VIDIOC_ENUMAUDIO: OK (Not Supported)
>         test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
>         test VIDIOC_G/S_AUDIO: OK (Not Supported)
>         Inputs: 0 Audio Inputs: 0 Tuners: 0
>  
> Output ioctls:
>         test VIDIOC_G/S_MODULATOR: OK (Not Supported)
>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>         test VIDIOC_ENUMAUDOUT: OK (Not Supported)
>         test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
>         test VIDIOC_G/S_AUDOUT: OK (Not Supported)
>         Outputs: 0 Audio Outputs: 0 Modulators: 0
>  
> Input/Output configuration ioctls:
>         test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
>         test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
>         test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
>         test VIDIOC_G/S_EDID: OK (Not Supported)
>  
> Control ioctls:
>         test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
>         test VIDIOC_QUERYCTRL: OK
>         test VIDIOC_G/S_CTRL: OK
>         test VIDIOC_G/S/TRY_EXT_CTRLS: OK
>         test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
>         test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
>         Standard Controls: 48 Private Controls: 0
>  
> Format ioctls:
>         test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
>         test VIDIOC_G/S_PARM: OK
>         test VIDIOC_G_FBUF: OK (Not Supported)
>         test VIDIOC_G_FMT: OK
>         test VIDIOC_TRY_FMT: OK
>         test VIDIOC_S_FMT: OK
>         test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
>         test Cropping: OK
>         test Composing: OK
>         test Scaling: OK (Not Supported)
>  
> Codec ioctls:
>         test VIDIOC_(TRY_)ENCODER_CMD: OK
>         test VIDIOC_G_ENC_INDEX: OK (Not Supported)
>         test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
>  
> Buffer ioctls:
>         test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
>         test VIDIOC_EXPBUF: OK (Not Supported)
>         test Requests: OK (Not Supported)
>  
> Total for iris_driver device /dev/video1: 44, Succeeded: 43, Failed: 1, Warnings: 0
> 
> Dikshita Agarwal (27):
>   media: introduce common helpers for video firmware handling
>   media: introduce common helpers for queues handling
>   media: introduce common helpers for buffer size calculation
>   dt-bindings: media: Add sm8550 dt schema
>   media: MAINTAINERS: Add Qualcomm Iris video accelerator driver
>   media: iris: register video device to platform driver
>   media: iris: initialize power resources
>   media: iris: introduce state machine for iris core
>   media: iris: initialize shared queues for host and firmware
>     communication
>   media: iris: add PIL functionality for video firmware
>   media: iris: introduce packetization layer for creating HFI packets
>   media: iris: add video processing unit(VPU) specific register handling
>   media: iris: introduce platform specific capabilities for core and
>     instance
>   media: iris: add handling for interrupt service routine(ISR) invoked
>     by hardware
>   media: iris: implement iris v4l2_ctrl_ops and prepare capabilities
>   media: iris: implement vb2_ops queue setup
>   media: iris: implement HFI to queue and release buffers
>   media: iris: add video hardware internal buffer count and size
>     calculation
>   media: iris: implement internal buffer management
>   media: iris: introduce instance states
>   media: iris: implement vb2 streaming ops on capture and output planes
>   media: iris: implement vb2 ops for buf_queue and firmware response
>   media: iris: register video encoder device to platform driver
>   media: iris: add platform specific instance capabilities for encoder
>   media: iris: implement iris v4l2 ioctl ops supported by encoder
>   media: iris: add vb2 streaming and buffer ops for encoder
>   media: iris: add power management for encoder
> 
> Vikash Garodia (7):
>   media: iris: implement iris v4l2 file ops
>   media: iris: introduce and implement iris vb2 mem ops
>   media: iris: implement iris v4l2 ioctl ops supported by decoder
>   media: iris: subscribe input and output properties to firmware
>   media: iris: subscribe src change and handle firmware responses
>   media: iris: add instance sub states and implement DRC and Drain
>     sequence
>   media: iris: implement power management
> 
>  .../bindings/media/qcom,sm8550-iris.yaml           |  177 ++
>  MAINTAINERS                                        |   11 +
>  drivers/media/platform/qcom/Kconfig                |    3 +-
>  drivers/media/platform/qcom/Makefile               |    3 +-
>  drivers/media/platform/qcom/vcodec/buffers.c       |  103 ++
>  drivers/media/platform/qcom/vcodec/buffers.h       |   15 +
>  drivers/media/platform/qcom/vcodec/firmware.c      |  147 ++
>  drivers/media/platform/qcom/vcodec/firmware.h      |   21 +
>  drivers/media/platform/qcom/vcodec/hfi_queue.c     |  258 +++
>  drivers/media/platform/qcom/vcodec/hfi_queue.h     |  129 ++
>  drivers/media/platform/qcom/vcodec/iris/Kconfig    |   13 +
>  drivers/media/platform/qcom/vcodec/iris/Makefile   |   26 +
>  .../media/platform/qcom/vcodec/iris/hfi_defines.h  |  386 +++++
>  .../media/platform/qcom/vcodec/iris/iris_buffer.c  |  833 +++++++++
>  .../media/platform/qcom/vcodec/iris/iris_buffer.h  |   65 +
>  .../media/platform/qcom/vcodec/iris/iris_common.h  |  147 ++
>  .../media/platform/qcom/vcodec/iris/iris_core.c    |  110 ++
>  .../media/platform/qcom/vcodec/iris/iris_core.h    |  121 ++
>  .../media/platform/qcom/vcodec/iris/iris_ctrls.c   | 1782 ++++++++++++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_ctrls.h   |   71 +
>  .../media/platform/qcom/vcodec/iris/iris_helpers.c | 1099 ++++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_helpers.h |   68 +
>  drivers/media/platform/qcom/vcodec/iris/iris_hfi.c |  917 ++++++++++
>  drivers/media/platform/qcom/vcodec/iris/iris_hfi.h |   47 +
>  .../platform/qcom/vcodec/iris/iris_hfi_packet.c    |  729 ++++++++
>  .../platform/qcom/vcodec/iris/iris_hfi_packet.h    |  118 ++
>  .../platform/qcom/vcodec/iris/iris_hfi_response.c  | 1097 ++++++++++++
>  .../platform/qcom/vcodec/iris/iris_hfi_response.h  |   20 +
>  .../platform/qcom/vcodec/iris/iris_instance.h      |  106 ++
>  .../media/platform/qcom/vcodec/iris/iris_power.c   |  178 ++
>  .../media/platform/qcom/vcodec/iris/iris_power.h   |   15 +
>  .../media/platform/qcom/vcodec/iris/iris_probe.c   |  357 ++++
>  .../media/platform/qcom/vcodec/iris/iris_state.c   |  453 +++++
>  .../media/platform/qcom/vcodec/iris/iris_state.h   |   78 +
>  drivers/media/platform/qcom/vcodec/iris/iris_vb2.c |  457 +++++
>  drivers/media/platform/qcom/vcodec/iris/iris_vb2.h |   28 +
>  .../media/platform/qcom/vcodec/iris/iris_vdec.c    | 1211 +++++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_vdec.h    |   25 +
>  .../media/platform/qcom/vcodec/iris/iris_venc.c    |  948 +++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_venc.h    |   27 +
>  .../media/platform/qcom/vcodec/iris/iris_vidc.c    | 1419 ++++++++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_vidc.h    |   15 +
>  .../platform/qcom/vcodec/iris/platform_common.c    |   29 +
>  .../platform/qcom/vcodec/iris/platform_common.h    |  323 ++++
>  .../platform/qcom/vcodec/iris/platform_sm8550.c    | 1190 +++++++++++++
>  .../media/platform/qcom/vcodec/iris/resources.c    |  506 ++++++
>  .../media/platform/qcom/vcodec/iris/resources.h    |   44 +
>  .../media/platform/qcom/vcodec/iris/vpu_common.c   |  158 ++
>  .../media/platform/qcom/vcodec/iris/vpu_common.h   |   52 +
>  .../media/platform/qcom/vcodec/iris/vpu_iris3.c    |  568 +++++++
>  .../media/platform/qcom/vcodec/iris/vpu_iris3.h    |   13 +
>  .../platform/qcom/vcodec/iris/vpu_iris3_buffer.c   |  395 +++++
>  .../platform/qcom/vcodec/iris/vpu_iris3_buffer.h   | 1469 ++++++++++++++++
>  .../platform/qcom/vcodec/iris/vpu_iris3_power.c    |  148 ++
>  .../platform/qcom/vcodec/iris/vpu_iris3_power.h    |   13 +
>  .../media/platform/qcom/{ => vcodec}/venus/Kconfig |    0
>  .../platform/qcom/{ => vcodec}/venus/Makefile      |    5 +-
>  .../media/platform/qcom/{ => vcodec}/venus/core.c  |  102 +-
>  .../media/platform/qcom/{ => vcodec}/venus/core.h  |    0
>  .../media/platform/qcom/{ => vcodec}/venus/dbgfs.c |    0
>  .../media/platform/qcom/{ => vcodec}/venus/dbgfs.h |    0
>  .../platform/qcom/vcodec/venus/firmware_no_tz.c    |  194 +++
>  .../platform/qcom/vcodec/venus/firmware_no_tz.h    |   19 +
>  .../platform/qcom/{ => vcodec}/venus/helpers.c     |  172 +-
>  .../platform/qcom/{ => vcodec}/venus/helpers.h     |    2 +-
>  .../media/platform/qcom/{ => vcodec}/venus/hfi.c   |    0
>  .../media/platform/qcom/{ => vcodec}/venus/hfi.h   |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_cmds.c    |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_cmds.h    |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_helper.h  |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_msgs.c    |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_msgs.h    |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_parser.c  |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_parser.h  |    0
>  .../qcom/{ => vcodec}/venus/hfi_plat_bufs.h        |    4 +-
>  .../qcom/{ => vcodec}/venus/hfi_plat_bufs_v6.c     |   10 +-
>  .../qcom/{ => vcodec}/venus/hfi_platform.c         |    0
>  .../qcom/{ => vcodec}/venus/hfi_platform.h         |    0
>  .../qcom/{ => vcodec}/venus/hfi_platform_v4.c      |    0
>  .../qcom/{ => vcodec}/venus/hfi_platform_v6.c      |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_venus.c   |  521 +-----
>  .../platform/qcom/{ => vcodec}/venus/hfi_venus.h   |    0
>  .../qcom/{ => vcodec}/venus/hfi_venus_io.h         |    0
>  .../platform/qcom/{ => vcodec}/venus/pm_helpers.c  |    0
>  .../platform/qcom/{ => vcodec}/venus/pm_helpers.h  |    0
>  .../media/platform/qcom/{ => vcodec}/venus/vdec.c  |    5 +-
>  .../media/platform/qcom/{ => vcodec}/venus/vdec.h  |    0
>  .../platform/qcom/{ => vcodec}/venus/vdec_ctrls.c  |    0
>  .../media/platform/qcom/{ => vcodec}/venus/venc.c  |    0
>  .../media/platform/qcom/{ => vcodec}/venus/venc.h  |    0
>  .../platform/qcom/{ => vcodec}/venus/venc_ctrls.c  |    0
>  drivers/media/platform/qcom/venus/firmware.c       |  363 ----
>  drivers/media/platform/qcom/venus/firmware.h       |   26 -
>  93 files changed, 19175 insertions(+), 989 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml
>  create mode 100644 drivers/media/platform/qcom/vcodec/buffers.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/buffers.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/firmware.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/firmware.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/hfi_queue.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/hfi_queue.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/Kconfig
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/Makefile
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/hfi_defines.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_buffer.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_buffer.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_common.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_core.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_core.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_ctrls.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_ctrls.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_helpers.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_helpers.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_packet.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_packet.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_response.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_response.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_instance.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_power.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_power.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_probe.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_state.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_state.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vb2.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vb2.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vdec.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vdec.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_venc.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_venc.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vidc.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vidc.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_common.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_common.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_sm8550.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/resources.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/resources.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_common.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_common.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_buffer.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_buffer.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_power.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_power.h
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/Kconfig (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/Makefile (75%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/core.c (91%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/core.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/dbgfs.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/dbgfs.h (100%)
>  create mode 100644 drivers/media/platform/qcom/vcodec/venus/firmware_no_tz.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/venus/firmware_no_tz.h
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/helpers.c (90%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/helpers.h (98%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_cmds.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_cmds.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_helper.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_msgs.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_msgs.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_parser.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_parser.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_plat_bufs.h (94%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_plat_bufs_v6.c (99%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform_v4.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform_v6.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus.c (73%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus_io.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/pm_helpers.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/pm_helpers.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec.c (99%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec_ctrls.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/venc.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/venc.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/venc_ctrls.c (100%)
>  delete mode 100644 drivers/media/platform/qcom/venus/firmware.c
>  delete mode 100644 drivers/media/platform/qcom/venus/firmware.h
>
Bryan O'Donoghue Dec. 18, 2023, 2:36 p.m. UTC | #2
On 18/12/2023 11:31, Dikshita Agarwal wrote:

> Static tools like checkpatch, smatch, dt_binding_check, sparse and Coccinelle
> run successfully with this driver.
> 
>   The output of v4l2-compliance test looks like:
> 
> v4l2-compliance SHA: not available, 64 bits
>   
> Cannot open device /dev/vido0, exiting.
> root@qemuarm64:/usr/bin# ./v4l2-compliance -d /dev/video0
> v4l2-compliance SHA: not available, 64 bits
>   
> Compliance test for iris_driver device /dev/video0:
>   
> Driver Info:
>          Driver name      : iris_driver
>          Card type        : iris_decoder
>          Bus info         : platform:iris_bus
>          Driver version   : 6.6.0
>          Capabilities     : 0x84204000
>                  Video Memory-to-Memory Multiplanar
>                  Streaming
>                  Extended Pix Format
>                  Device Capabilities
>          Device Caps      : 0x04204000
>                  Video Memory-to-Memory Multiplanar
>                  Streaming
>                  Extended Pix Format

Good to see some code sharing, is there no way to facilitate the new 
code in existing venus ?

I applied your patches to -stable and was happy to find they didn't 
break venus on rb5, at least for the superficial test I did [1]. The 
names you export here look odd though.

"Driver name" and "Cart Type" should be something like "qcom-iris" and 
"Qualcomm Iris video decoder"

v4l2-compliance -d /dev/video15
v4l2-compliance 1.24.1, 64 bits, 64-bit time_t

Compliance test for qcom-venus device /dev/video15:

Driver Info:
         Driver name      : qcom-venus
         Card type        : Qualcomm Venus video encoder
         Bus info         : platform:qcom-venus
         Driver version   : 6.7.0
         Capabilities     : 0x84204000
                 Video Memory-to-Memory Multiplanar
                 Streaming
                 Extended Pix Format
                 Device Capabilities
         Device Caps      : 0x04204000
                 Video Memory-to-Memory Multiplanar
                 Streaming
                 Extended Pix Format
         Detected Stateful Encoder
  [1] 
https://file-examples.com/index.php/sample-video-files/sample-mp4-files/

ffplay -loglevel debug -codec:video h264_v4l2m2m -i sample-30s.mp4

> Driver Info:
>          Driver name      : iris_driver
>          Card type        : iris_encoder

Same comment on normalising names wrt to venus.

---
bod
Dmitry Baryshkov Dec. 18, 2023, 6:38 p.m. UTC | #3
On 18/12/2023 13:31, Dikshita Agarwal wrote:
> This patch series introduces support for Qualcomm new video acceleration
> hardware architecture, used for video stream decoding/encoding. This driver
> is based on new communication protocol between video hardware and application
> processor.

This doesn't answer one important point, you have been asked for v1. 
What is the actual change point between Venus and Iris? What has been 
changed so much that it demands a separate driver. This is the main 
question for the cover letter, which has not been answered so far.

 From what I see from you bindings, the hardware is pretty close to what 
we see in the latest venus generations. I asssme that there was a change 
in the vcodec inteface to the firmware and other similar changes. Could 
you please point out, which parts of Venus driver do no longer work or 
are not applicable for sm8550?

> This driver comes with below capabilities:
> - V4L2 complaint video driver with M2M and STREAMING capability.
> - Supports H264, H265, VP9 decoders.
> - Supports H264, H265 encoders.
> This driver comes with below features:
> - Centralized resource and memory management.
> - Centralized management of core and instance states.
> - Defines platform specific capabilities and features. As a results, it provides
>    a single point of control to enable/disable a given feature depending on
>    specific platform capabilities.
> - Handles hardware interdependent configurations. For a given configuration from
>    client, the driver checks for hardware dependent configuration/s and updates
>    the same.
> - Handles multiple complex video scenarios involving state transitions - DRC,
>    Drain, Seek, back to back DRC, DRC during Drain sequence, DRC during Seek
>    sequence.
> - Introduces a flexible way for driver to subscribe for any property with
>    hardware. Hardware would inform driver with those subscribed property with any
>    change in value.
> - Introduces performance (clock and bus) model based on new hardware
>    architecture.
> - Introduces multi thread safe design to handle communication between client and
>    hardware.
> - Adapts encoder quality improvements available in new hardware architecture.
> - Implements asynchronous communication with hardware to achieve better
>    experience in low latency usecases.
> - Supports multi stage hardware architecture for encode/decode.
> - Output and capture planes are controlled independently. Thereby providing a
>    way to reconfigure individual plane.
> - Hardware packetization layer supports synchronization between configuration
>    packet and data packet.
> - Introduces a flexibility to receive a hardware response for a given command
>    packet.
> - Native hardware support of LAST flag which is mandatory to align with port
>    reconfiguration and DRAIN sequence as per V4L guidelines.
> - Native hardware support for drain sequence.
> 
> Changes done since v1[1]:
> - Patches are created as logical split instead of file by file.
> - Extracted common functionality between venus and iris driver and placed them
>    under common folder vcodec.
> - Flattened directory structure.
> - Restructured the code in a simplified layer architecture.
> - Implemented runtime PM, and dropped explicit power collapse thread in driver.
> - Moved to standard kernel log print api.
> - Simplified the bus and clock calculation logic.
> - Removed debug features like dma tracker, frame stats, debugfs.
> - Merged v4l2 and vidc layer as vidc in driver.
> - Removed separate probe for context bank.
> - Use of_device_get_match_data to get platform data.
> - Replaced complex macros with inline functions.
> - Migrated venus to iris names.
> - Addressed many other comments received on [1].
> 
> [1]: https://patchwork.kernel.org/project/linux-media/list/?series=770581
> 
> Patch 1, adds dt binding for iris driver.
> 
> Patches 2-4, are introducing vcodec folder and moving common APIs like fw
> load/unload, buffer size calcualtions, read/write to shared queues to common
> files which are being used by both venus and iris drivers.
> This also moves the venus driver folder to vcodec folder.
> 
> Patch 5, adds the maintainers for iris driver.
> 
> Patch 6-29, adds core iris driver and enable decoder.
> 
> Patch 30-34, enable encoder functionality in iris driver.
> 
> Static tools like checkpatch, smatch, dt_binding_check, sparse and Coccinelle
> run successfully with this driver.
> 
>   The output of v4l2-compliance test looks like:
> 
> v4l2-compliance SHA: not available, 64 bits
>   
> Cannot open device /dev/vido0, exiting.
> root@qemuarm64:/usr/bin# ./v4l2-compliance -d /dev/video0
> v4l2-compliance SHA: not available, 64 bits
>   
> Compliance test for iris_driver device /dev/video0:
>   
> Driver Info:
>          Driver name      : iris_driver
>          Card type        : iris_decoder
>          Bus info         : platform:iris_bus
>          Driver version   : 6.6.0
>          Capabilities     : 0x84204000
>                  Video Memory-to-Memory Multiplanar
>                  Streaming
>                  Extended Pix Format
>                  Device Capabilities
>          Device Caps      : 0x04204000
>                  Video Memory-to-Memory Multiplanar
>                  Streaming
>                  Extended Pix Format
>   
> Required ioctls:
>          test VIDIOC_QUERYCAP: OK
>   
> Allow for multiple opens:
>          test second /dev/video0 open: OK
>          test VIDIOC_QUERYCAP: OK
>          test VIDIOC_G/S_PRIORITY: OK
>                  fail: ../../../v4l-utils-1.18.1/utils/v4l2-compliance/v4l2-compliance.cpp(724): !ok
>          test for unlimited opens: FAIL
>   
> Debug ioctls:
>          test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
>          test VIDIOC_LOG_STATUS: OK (Not Supported)
>   
> Input ioctls:
>          test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
>          test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>          test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
>          test VIDIOC_ENUMAUDIO: OK (Not Supported)
>          test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
>          test VIDIOC_G/S_AUDIO: OK (Not Supported)
>          Inputs: 0 Audio Inputs: 0 Tuners: 0
>   
> Output ioctls:
>          test VIDIOC_G/S_MODULATOR: OK (Not Supported)
>          test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>          test VIDIOC_ENUMAUDOUT: OK (Not Supported)
>          test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
>          test VIDIOC_G/S_AUDOUT: OK (Not Supported)
>          Outputs: 0 Audio Outputs: 0 Modulators: 0
>   
> Input/Output configuration ioctls:
>          test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
>          test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
>          test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
>          test VIDIOC_G/S_EDID: OK (Not Supported)
>   
> Control ioctls:
>          test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
>          test VIDIOC_QUERYCTRL: OK
>          test VIDIOC_G/S_CTRL: OK
>          test VIDIOC_G/S/TRY_EXT_CTRLS: OK
>          test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
>          test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
>          Standard Controls: 48 Private Controls: 0
>   
> Format ioctls:
>          test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
>          test VIDIOC_G/S_PARM: OK (Not Supported)
>          test VIDIOC_G_FBUF: OK (Not Supported)
>          test VIDIOC_G_FMT: OK
>          test VIDIOC_TRY_FMT: OK
>          test VIDIOC_S_FMT: OK
>          test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
>          test Cropping: OK
>          test Composing: OK
>          test Scaling: OK
>   
> Codec ioctls:
>          test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
>          test VIDIOC_G_ENC_INDEX: OK (Not Supported)
>          test VIDIOC_(TRY_)DECODER_CMD: OK
>   
> Buffer ioctls:
>          testVIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
>          test VIDIOC_EXPBUF: OK (Not Supported)
>          test Requests: OK (Not Supported)
>   
> Total for iris_driver device /dev/video0: 44, Succeeded: 43, Failed: 1, Warnings: 0
>   
> Compliance test for iris_driver device /dev/video1:
>   
> Driver Info:
>          Driver name      : iris_driver
>          Card type        : iris_encoder
>          Bus info         : platform:iris_bus
>          Driver version   : 6.6.0
>          Capabilities     : 0x84204000
>                  Video Memory-to-Memory Multiplanar
>                  Streaming
>                  Extended Pix Format
>                  Device Capabilities
>          Device Caps      : 0x04204000
>                  Video Memory-to-Memory Multiplanar
>                  Streaming
>                  Extended Pix Format
>   
> Required ioctls:
>          test VIDIOC_QUERYCAP: OK
>   
> Allow for multiple opens:
>          test second /dev/video1 open: OK
>          test VIDIOC_QUERYCAP: OK
>          test VIDIOC_G/S_PRIORITY: OK
>                  fail: ../../../v4l-utils-1.18.1/utils/v4l2-compliance/v4l2-compliance.cpp(724): !ok
>          test for unlimited opens: FAIL
>   
> Debug ioctls:
>          test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
>          test VIDIOC_LOG_STATUS: OK (Not Supported)
>   
> Input ioctls:
>          test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
>          test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>          test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
>          test VIDIOC_ENUMAUDIO: OK (Not Supported)
>          test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
>          test VIDIOC_G/S_AUDIO: OK (Not Supported)
>          Inputs: 0 Audio Inputs: 0 Tuners: 0
>   
> Output ioctls:
>          test VIDIOC_G/S_MODULATOR: OK (Not Supported)
>          test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>          test VIDIOC_ENUMAUDOUT: OK (Not Supported)
>          test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
>          test VIDIOC_G/S_AUDOUT: OK (Not Supported)
>          Outputs: 0 Audio Outputs: 0 Modulators: 0
>   
> Input/Output configuration ioctls:
>          test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
>          test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
>          test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
>          test VIDIOC_G/S_EDID: OK (Not Supported)
>   
> Control ioctls:
>          test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
>          test VIDIOC_QUERYCTRL: OK
>          test VIDIOC_G/S_CTRL: OK
>          test VIDIOC_G/S/TRY_EXT_CTRLS: OK
>          test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
>          test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
>          Standard Controls: 48 Private Controls: 0
>   
> Format ioctls:
>          test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
>          test VIDIOC_G/S_PARM: OK
>          test VIDIOC_G_FBUF: OK (Not Supported)
>          test VIDIOC_G_FMT: OK
>          test VIDIOC_TRY_FMT: OK
>          test VIDIOC_S_FMT: OK
>          test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
>          test Cropping: OK
>          test Composing: OK
>          test Scaling: OK (Not Supported)
>   
> Codec ioctls:
>          test VIDIOC_(TRY_)ENCODER_CMD: OK
>          test VIDIOC_G_ENC_INDEX: OK (Not Supported)
>          test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
>   
> Buffer ioctls:
>          test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
>          test VIDIOC_EXPBUF: OK (Not Supported)
>          test Requests: OK (Not Supported)
>   
> Total for iris_driver device /dev/video1: 44, Succeeded: 43, Failed: 1, Warnings: 0
> 
> Dikshita Agarwal (27):
>    media: introduce common helpers for video firmware handling
>    media: introduce common helpers for queues handling
>    media: introduce common helpers for buffer size calculation
>    dt-bindings: media: Add sm8550 dt schema
>    media: MAINTAINERS: Add Qualcomm Iris video accelerator driver
>    media: iris: register video device to platform driver
>    media: iris: initialize power resources
>    media: iris: introduce state machine for iris core
>    media: iris: initialize shared queues for host and firmware
>      communication
>    media: iris: add PIL functionality for video firmware
>    media: iris: introduce packetization layer for creating HFI packets
>    media: iris: add video processing unit(VPU) specific register handling
>    media: iris: introduce platform specific capabilities for core and
>      instance
>    media: iris: add handling for interrupt service routine(ISR) invoked
>      by hardware
>    media: iris: implement iris v4l2_ctrl_ops and prepare capabilities
>    media: iris: implement vb2_ops queue setup
>    media: iris: implement HFI to queue and release buffers
>    media: iris: add video hardware internal buffer count and size
>      calculation
>    media: iris: implement internal buffer management
>    media: iris: introduce instance states
>    media: iris: implement vb2 streaming ops on capture and output planes
>    media: iris: implement vb2 ops for buf_queue and firmware response
>    media: iris: register video encoder device to platform driver
>    media: iris: add platform specific instance capabilities for encoder
>    media: iris: implement iris v4l2 ioctl ops supported by encoder
>    media: iris: add vb2 streaming and buffer ops for encoder
>    media: iris: add power management for encoder
> 
> Vikash Garodia (7):
>    media: iris: implement iris v4l2 file ops
>    media: iris: introduce and implement iris vb2 mem ops
>    media: iris: implement iris v4l2 ioctl ops supported by decoder
>    media: iris: subscribe input and output properties to firmware
>    media: iris: subscribe src change and handle firmware responses
>    media: iris: add instance sub states and implement DRC and Drain
>      sequence
>    media: iris: implement power management
> 
>   .../bindings/media/qcom,sm8550-iris.yaml           |  177 ++
>   MAINTAINERS                                        |   11 +
>   drivers/media/platform/qcom/Kconfig                |    3 +-
>   drivers/media/platform/qcom/Makefile               |    3 +-
>   drivers/media/platform/qcom/vcodec/buffers.c       |  103 ++
>   drivers/media/platform/qcom/vcodec/buffers.h       |   15 +
>   drivers/media/platform/qcom/vcodec/firmware.c      |  147 ++
>   drivers/media/platform/qcom/vcodec/firmware.h      |   21 +
>   drivers/media/platform/qcom/vcodec/hfi_queue.c     |  258 +++
>   drivers/media/platform/qcom/vcodec/hfi_queue.h     |  129 ++
>   drivers/media/platform/qcom/vcodec/iris/Kconfig    |   13 +
>   drivers/media/platform/qcom/vcodec/iris/Makefile   |   26 +
>   .../media/platform/qcom/vcodec/iris/hfi_defines.h  |  386 +++++
>   .../media/platform/qcom/vcodec/iris/iris_buffer.c  |  833 +++++++++
>   .../media/platform/qcom/vcodec/iris/iris_buffer.h  |   65 +
>   .../media/platform/qcom/vcodec/iris/iris_common.h  |  147 ++
>   .../media/platform/qcom/vcodec/iris/iris_core.c    |  110 ++
>   .../media/platform/qcom/vcodec/iris/iris_core.h    |  121 ++
>   .../media/platform/qcom/vcodec/iris/iris_ctrls.c   | 1782 ++++++++++++++++++++
>   .../media/platform/qcom/vcodec/iris/iris_ctrls.h   |   71 +
>   .../media/platform/qcom/vcodec/iris/iris_helpers.c | 1099 ++++++++++++
>   .../media/platform/qcom/vcodec/iris/iris_helpers.h |   68 +
>   drivers/media/platform/qcom/vcodec/iris/iris_hfi.c |  917 ++++++++++
>   drivers/media/platform/qcom/vcodec/iris/iris_hfi.h |   47 +
>   .../platform/qcom/vcodec/iris/iris_hfi_packet.c    |  729 ++++++++
>   .../platform/qcom/vcodec/iris/iris_hfi_packet.h    |  118 ++
>   .../platform/qcom/vcodec/iris/iris_hfi_response.c  | 1097 ++++++++++++
>   .../platform/qcom/vcodec/iris/iris_hfi_response.h  |   20 +
>   .../platform/qcom/vcodec/iris/iris_instance.h      |  106 ++
>   .../media/platform/qcom/vcodec/iris/iris_power.c   |  178 ++
>   .../media/platform/qcom/vcodec/iris/iris_power.h   |   15 +
>   .../media/platform/qcom/vcodec/iris/iris_probe.c   |  357 ++++
>   .../media/platform/qcom/vcodec/iris/iris_state.c   |  453 +++++
>   .../media/platform/qcom/vcodec/iris/iris_state.h   |   78 +
>   drivers/media/platform/qcom/vcodec/iris/iris_vb2.c |  457 +++++
>   drivers/media/platform/qcom/vcodec/iris/iris_vb2.h |   28 +
>   .../media/platform/qcom/vcodec/iris/iris_vdec.c    | 1211 +++++++++++++
>   .../media/platform/qcom/vcodec/iris/iris_vdec.h    |   25 +
>   .../media/platform/qcom/vcodec/iris/iris_venc.c    |  948 +++++++++++
>   .../media/platform/qcom/vcodec/iris/iris_venc.h    |   27 +
>   .../media/platform/qcom/vcodec/iris/iris_vidc.c    | 1419 ++++++++++++++++
>   .../media/platform/qcom/vcodec/iris/iris_vidc.h    |   15 +
>   .../platform/qcom/vcodec/iris/platform_common.c    |   29 +
>   .../platform/qcom/vcodec/iris/platform_common.h    |  323 ++++
>   .../platform/qcom/vcodec/iris/platform_sm8550.c    | 1190 +++++++++++++
>   .../media/platform/qcom/vcodec/iris/resources.c    |  506 ++++++
>   .../media/platform/qcom/vcodec/iris/resources.h    |   44 +
>   .../media/platform/qcom/vcodec/iris/vpu_common.c   |  158 ++
>   .../media/platform/qcom/vcodec/iris/vpu_common.h   |   52 +
>   .../media/platform/qcom/vcodec/iris/vpu_iris3.c    |  568 +++++++
>   .../media/platform/qcom/vcodec/iris/vpu_iris3.h    |   13 +
>   .../platform/qcom/vcodec/iris/vpu_iris3_buffer.c   |  395 +++++
>   .../platform/qcom/vcodec/iris/vpu_iris3_buffer.h   | 1469 ++++++++++++++++
>   .../platform/qcom/vcodec/iris/vpu_iris3_power.c    |  148 ++
>   .../platform/qcom/vcodec/iris/vpu_iris3_power.h    |   13 +
>   .../media/platform/qcom/{ => vcodec}/venus/Kconfig |    0
>   .../platform/qcom/{ => vcodec}/venus/Makefile      |    5 +-
>   .../media/platform/qcom/{ => vcodec}/venus/core.c  |  102 +-
>   .../media/platform/qcom/{ => vcodec}/venus/core.h  |    0
>   .../media/platform/qcom/{ => vcodec}/venus/dbgfs.c |    0
>   .../media/platform/qcom/{ => vcodec}/venus/dbgfs.h |    0
>   .../platform/qcom/vcodec/venus/firmware_no_tz.c    |  194 +++
>   .../platform/qcom/vcodec/venus/firmware_no_tz.h    |   19 +
>   .../platform/qcom/{ => vcodec}/venus/helpers.c     |  172 +-
>   .../platform/qcom/{ => vcodec}/venus/helpers.h     |    2 +-
>   .../media/platform/qcom/{ => vcodec}/venus/hfi.c   |    0
>   .../media/platform/qcom/{ => vcodec}/venus/hfi.h   |    0
>   .../platform/qcom/{ => vcodec}/venus/hfi_cmds.c    |    0
>   .../platform/qcom/{ => vcodec}/venus/hfi_cmds.h    |    0
>   .../platform/qcom/{ => vcodec}/venus/hfi_helper.h  |    0
>   .../platform/qcom/{ => vcodec}/venus/hfi_msgs.c    |    0
>   .../platform/qcom/{ => vcodec}/venus/hfi_msgs.h    |    0
>   .../platform/qcom/{ => vcodec}/venus/hfi_parser.c  |    0
>   .../platform/qcom/{ => vcodec}/venus/hfi_parser.h  |    0
>   .../qcom/{ => vcodec}/venus/hfi_plat_bufs.h        |    4 +-
>   .../qcom/{ => vcodec}/venus/hfi_plat_bufs_v6.c     |   10 +-
>   .../qcom/{ => vcodec}/venus/hfi_platform.c         |    0
>   .../qcom/{ => vcodec}/venus/hfi_platform.h         |    0
>   .../qcom/{ => vcodec}/venus/hfi_platform_v4.c      |    0
>   .../qcom/{ => vcodec}/venus/hfi_platform_v6.c      |    0
>   .../platform/qcom/{ => vcodec}/venus/hfi_venus.c   |  521 +-----
>   .../platform/qcom/{ => vcodec}/venus/hfi_venus.h   |    0
>   .../qcom/{ => vcodec}/venus/hfi_venus_io.h         |    0
>   .../platform/qcom/{ => vcodec}/venus/pm_helpers.c  |    0
>   .../platform/qcom/{ => vcodec}/venus/pm_helpers.h  |    0
>   .../media/platform/qcom/{ => vcodec}/venus/vdec.c  |    5 +-
>   .../media/platform/qcom/{ => vcodec}/venus/vdec.h  |    0
>   .../platform/qcom/{ => vcodec}/venus/vdec_ctrls.c  |    0
>   .../media/platform/qcom/{ => vcodec}/venus/venc.c  |    0
>   .../media/platform/qcom/{ => vcodec}/venus/venc.h  |    0
>   .../platform/qcom/{ => vcodec}/venus/venc_ctrls.c  |    0
>   drivers/media/platform/qcom/venus/firmware.c       |  363 ----
>   drivers/media/platform/qcom/venus/firmware.h       |   26 -
>   93 files changed, 19175 insertions(+), 989 deletions(-)
>   create mode 100644 Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml
>   create mode 100644 drivers/media/platform/qcom/vcodec/buffers.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/buffers.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/firmware.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/firmware.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/hfi_queue.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/hfi_queue.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/Kconfig
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/Makefile
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/hfi_defines.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_buffer.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_buffer.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_common.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_core.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_core.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_ctrls.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_ctrls.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_helpers.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_helpers.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_packet.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_packet.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_response.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_response.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_instance.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_power.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_power.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_probe.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_state.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_state.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vb2.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vb2.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vdec.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vdec.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_venc.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_venc.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vidc.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vidc.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_common.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_common.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_sm8550.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/resources.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/resources.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_common.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_common.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_buffer.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_buffer.h
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_power.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_power.h
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/Kconfig (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/Makefile (75%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/core.c (91%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/core.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/dbgfs.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/dbgfs.h (100%)
>   create mode 100644 drivers/media/platform/qcom/vcodec/venus/firmware_no_tz.c
>   create mode 100644 drivers/media/platform/qcom/vcodec/venus/firmware_no_tz.h
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/helpers.c (90%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/helpers.h (98%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_cmds.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_cmds.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_helper.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_msgs.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_msgs.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_parser.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_parser.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_plat_bufs.h (94%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_plat_bufs_v6.c (99%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform_v4.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform_v6.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus.c (73%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus_io.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/pm_helpers.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/pm_helpers.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec.c (99%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec_ctrls.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/venc.c (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/venc.h (100%)
>   rename drivers/media/platform/qcom/{ => vcodec}/venus/venc_ctrls.c (100%)
>   delete mode 100644 drivers/media/platform/qcom/venus/firmware.c
>   delete mode 100644 drivers/media/platform/qcom/venus/firmware.h
>
Bryan O'Donoghue Dec. 19, 2023, 12:10 p.m. UTC | #4
On 18/12/2023 18:38, Dmitry Baryshkov wrote:
> On 18/12/2023 13:31, Dikshita Agarwal wrote:
>> This patch series introduces support for Qualcomm new video acceleration
>> hardware architecture, used for video stream decoding/encoding. This 
>> driver
>> is based on new communication protocol between video hardware and 
>> application
>> processor.
> 
> This doesn't answer one important point, you have been asked for v1. 
> What is the actual change point between Venus and Iris? What has been 
> changed so much that it demands a separate driver. This is the main 
> question for the cover letter, which has not been answered so far.
> 
>  From what I see from you bindings, the hardware is pretty close to what 
> we see in the latest venus generations. I asssme that there was a change 
> in the vcodec inteface to the firmware and other similar changes. Could 
> you please point out, which parts of Venus driver do no longer work or 
> are not applicable for sm8550?

I'd like to hear this detail too.

Grazing on some of the patches here I saw were we adding vb2 buffer ops, 
which is already supported by venus.

Similar question on booting cores and doing a busy/wait instead of a 
rendezvous based on an IRQ.

I feel there's a version of this series that can probably unify the 
codebases but, am open to being told how that is incorrect.

---
bod
Vikash Garodia Dec. 20, 2023, 6:32 a.m. UTC | #5
Hi Dmitry,

On 12/19/2023 12:08 AM, Dmitry Baryshkov wrote:
> On 18/12/2023 13:31, Dikshita Agarwal wrote:
>> This patch series introduces support for Qualcomm new video acceleration
>> hardware architecture, used for video stream decoding/encoding. This driver
>> is based on new communication protocol between video hardware and application
>> processor.
> 
> This doesn't answer one important point, you have been asked for v1. What is the
> actual change point between Venus and Iris? What has been changed so much that
> it demands a separate driver. This is the main question for the cover letter,
> which has not been answered so far.
> 
> From what I see from you bindings, the hardware is pretty close to what we see
> in the latest venus generations. I asssme that there was a change in the vcodec
> inteface to the firmware and other similar changes. Could you please point out,
> which parts of Venus driver do no longer work or are not applicable for sm8550

The motivation behind having a separate IRIS driver was discussed earlier in [1]
In the same discussion, it was ellaborated on how the impact would be with
change in the new firmware interface and other video layers in the driver. I can
add this in cover letter in the next revision.

We see some duplication of code and to handle the same, the series brings in a
common code reusability between iris and venus. Aligning the common peices of
venus and iris will be a work in progress, once we land the base driver for iris.

Again qualcomm video team does not have a plan to support sm8550/x1e80100 on
venus as the changes are too interleaved to absorb in venus driver. And there is
significant interest in community to start validating video driver on sm8550 or
x1e80100.

[1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/

Regards,
Vikash
Dmitry Baryshkov Dec. 20, 2023, 7:37 a.m. UTC | #6
On Wed, 20 Dec 2023 at 08:32, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
>
> Hi Dmitry,
>
> On 12/19/2023 12:08 AM, Dmitry Baryshkov wrote:
> > On 18/12/2023 13:31, Dikshita Agarwal wrote:
> >> This patch series introduces support for Qualcomm new video acceleration
> >> hardware architecture, used for video stream decoding/encoding. This driver
> >> is based on new communication protocol between video hardware and application
> >> processor.
> >
> > This doesn't answer one important point, you have been asked for v1. What is the
> > actual change point between Venus and Iris? What has been changed so much that
> > it demands a separate driver. This is the main question for the cover letter,
> > which has not been answered so far.
> >
> > From what I see from you bindings, the hardware is pretty close to what we see
> > in the latest venus generations. I asssme that there was a change in the vcodec
> > inteface to the firmware and other similar changes. Could you please point out,
> > which parts of Venus driver do no longer work or are not applicable for sm8550
>
> The motivation behind having a separate IRIS driver was discussed earlier in [1]
> In the same discussion, it was ellaborated on how the impact would be with
> change in the new firmware interface and other video layers in the driver. I can
> add this in cover letter in the next revision.

Ok. So the changes cover the HFI interface. Is that correct?

> We see some duplication of code and to handle the same, the series brings in a
> common code reusability between iris and venus. Aligning the common peices of
> venus and iris will be a work in progress, once we land the base driver for iris.

This is not how it usually works. Especially not with the patches you
have posted.

I have the following suggestion how this story can continue:
You can _start_ by reworking venus driver, separating the HFI /
firmware / etc interface to an internal interface in the driver. Then
implement Iris as a plug in for that interface. I might be mistaken
here, but I think this is the way how this can be beneficial for both
the video en/decoding on both old and new platforms.

Short rationale:
The venus driver has a history of supported platforms. There is
already some kind of buffer management in place. Both developers and
testers have spent their effort on finding issues there. Sending new
driver means that we have to spend the same amount of efforts on this.
Moreover, even from the porter point of view. You are creating new
bindings for the new hardware. Which do not follow the
venus-common.yaml. And they do not follow the defined bindings for the
recent venus platforms. Which means that as a developer I have to care
about two different ways to describe nearly the same hardware.

> Again qualcomm video team does not have a plan to support sm8550/x1e80100 on
> venus as the changes are too interleaved to absorb in venus driver. And there is
> significant interest in community to start validating video driver on sm8550 or
> x1e80100.
>
> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
>
> Regards,
> Vikash
Vikash Garodia Dec. 20, 2023, 8:14 a.m. UTC | #7
Hi,

On 12/20/2023 1:07 PM, Dmitry Baryshkov wrote:
> On Wed, 20 Dec 2023 at 08:32, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
>>
>> Hi Dmitry,
>>
>> On 12/19/2023 12:08 AM, Dmitry Baryshkov wrote:
>>> On 18/12/2023 13:31, Dikshita Agarwal wrote:
>>>> This patch series introduces support for Qualcomm new video acceleration
>>>> hardware architecture, used for video stream decoding/encoding. This driver
>>>> is based on new communication protocol between video hardware and application
>>>> processor.
>>>
>>> This doesn't answer one important point, you have been asked for v1. What is the
>>> actual change point between Venus and Iris? What has been changed so much that
>>> it demands a separate driver. This is the main question for the cover letter,
>>> which has not been answered so far.
>>>
>>> From what I see from you bindings, the hardware is pretty close to what we see
>>> in the latest venus generations. I asssme that there was a change in the vcodec
>>> inteface to the firmware and other similar changes. Could you please point out,
>>> which parts of Venus driver do no longer work or are not applicable for sm8550
>>
>> The motivation behind having a separate IRIS driver was discussed earlier in [1]
>> In the same discussion, it was ellaborated on how the impact would be with
>> change in the new firmware interface and other video layers in the driver. I can
>> add this in cover letter in the next revision.
> 
> Ok. So the changes cover the HFI interface. Is that correct?
Change wise, yes.

>> We see some duplication of code and to handle the same, the series brings in a
>> common code reusability between iris and venus. Aligning the common peices of
>> venus and iris will be a work in progress, once we land the base driver for iris.
> 
> This is not how it usually works. Especially not with the patches you
> have posted.
> 
> I have the following suggestion how this story can continue:
> You can _start_ by reworking venus driver, separating the HFI /
> firmware / etc interface to an internal interface in the driver. Then
> implement Iris as a plug in for that interface. I might be mistaken
> here, but I think this is the way how this can be beneficial for both
> the video en/decoding on both old and new platforms.

HFI/firmware interface is already confined to HFI layer in the existing venus
driver. We explained in the previous discussion [1], on how the HFI change
impacts the other layers by taking example of a DRC usecase. Please have a look
considering the usecase and the impact it brings to other layers in the driver.

[1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
> Short rationale:
> The venus driver has a history of supported platforms. There is
> already some kind of buffer management in place. Both developers and
> testers have spent their effort on finding issues there. Sending new
> driver means that we have to spend the same amount of efforts on this.
> Moreover, even from the porter point of view. You are creating new
> bindings for the new hardware. Which do not follow the
> venus-common.yaml. And they do not follow the defined bindings for the
> recent venus platforms. Which means that as a developer I have to care
> about two different ways to describe nearly the same hardware.>> Again qualcomm video team does not have a plan to support sm8550/x1e80100 on
>> venus as the changes are too interleaved to absorb in venus driver. And there is
>> significant interest in community to start validating video driver on sm8550 or
>> x1e80100.
>>
>> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
>>
>> Regards,
>> Vikash
> 
> 
>
Krzysztof Kozlowski Dec. 20, 2023, 8:15 a.m. UTC | #8
On 20/12/2023 07:32, Vikash Garodia wrote:
>> From what I see from you bindings, the hardware is pretty close to what we see
>> in the latest venus generations. I asssme that there was a change in the vcodec
>> inteface to the firmware and other similar changes. Could you please point out,
>> which parts of Venus driver do no longer work or are not applicable for sm8550
> 
> The motivation behind having a separate IRIS driver was discussed earlier in [1]
> In the same discussion, it was ellaborated on how the impact would be with
> change in the new firmware interface and other video layers in the driver. I can
> add this in cover letter in the next revision.
> 
> We see some duplication of code and to handle the same, the series brings in a
> common code reusability between iris and venus. Aligning the common peices of
> venus and iris will be a work in progress, once we land the base driver for iris.
> 
> Again qualcomm video team does not have a plan to support sm8550/x1e80100 on

If you want it to get merged, then create such plan, please.

> venus as the changes are too interleaved to absorb in venus driver. And there is
> significant interest in community to start validating video driver on sm8550 or
> x1e80100.

Community does not want duplicated drivers leading to maintenance costs.
Your approach to this is not how upstreaming process works.

Best regards,
Krzysztof
Vikash Garodia Dec. 20, 2023, 8:32 a.m. UTC | #9
Hi Krzysztof,

On 12/20/2023 1:45 PM, Krzysztof Kozlowski wrote:
> On 20/12/2023 07:32, Vikash Garodia wrote:
>>> From what I see from you bindings, the hardware is pretty close to what we see
>>> in the latest venus generations. I asssme that there was a change in the vcodec
>>> inteface to the firmware and other similar changes. Could you please point out,
>>> which parts of Venus driver do no longer work or are not applicable for sm8550
>>
>> The motivation behind having a separate IRIS driver was discussed earlier in [1]
>> In the same discussion, it was ellaborated on how the impact would be with
>> change in the new firmware interface and other video layers in the driver. I can
>> add this in cover letter in the next revision.
>>
>> We see some duplication of code and to handle the same, the series brings in a
>> common code reusability between iris and venus. Aligning the common peices of
>> venus and iris will be a work in progress, once we land the base driver for iris.
>>
>> Again qualcomm video team does not have a plan to support sm8550/x1e80100 on
> 
> If you want it to get merged, then create such plan, please.
> 
>> venus as the changes are too interleaved to absorb in venus driver. And there is
>> significant interest in community to start validating video driver on sm8550 or
>> x1e80100.
> 
> Community does not want duplicated drivers leading to maintenance costs.
> Your approach to this is not how upstreaming process works.
If you go over the pseudo code which i explained in [1], you can see that the
maintenance cost would be higher if try to impose the new interface in existing
driver. Video team, alongwith Stan, have considered the aspect of maintenance
before starting on this new driver.

[1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/

Regards,
Vikash
Dmitry Baryshkov Dec. 20, 2023, 8:39 a.m. UTC | #10
On Wed, 20 Dec 2023 at 10:14, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
>
> Hi,
>
> On 12/20/2023 1:07 PM, Dmitry Baryshkov wrote:
> > On Wed, 20 Dec 2023 at 08:32, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
> >>
> >> Hi Dmitry,
> >>
> >> On 12/19/2023 12:08 AM, Dmitry Baryshkov wrote:
> >>> On 18/12/2023 13:31, Dikshita Agarwal wrote:
> >>>> This patch series introduces support for Qualcomm new video acceleration
> >>>> hardware architecture, used for video stream decoding/encoding. This driver
> >>>> is based on new communication protocol between video hardware and application
> >>>> processor.
> >>>
> >>> This doesn't answer one important point, you have been asked for v1. What is the
> >>> actual change point between Venus and Iris? What has been changed so much that
> >>> it demands a separate driver. This is the main question for the cover letter,
> >>> which has not been answered so far.
> >>>
> >>> From what I see from you bindings, the hardware is pretty close to what we see
> >>> in the latest venus generations. I asssme that there was a change in the vcodec
> >>> inteface to the firmware and other similar changes. Could you please point out,
> >>> which parts of Venus driver do no longer work or are not applicable for sm8550
> >>
> >> The motivation behind having a separate IRIS driver was discussed earlier in [1]
> >> In the same discussion, it was ellaborated on how the impact would be with
> >> change in the new firmware interface and other video layers in the driver. I can
> >> add this in cover letter in the next revision.
> >
> > Ok. So the changes cover the HFI interface. Is that correct?
> Change wise, yes.
>
> >> We see some duplication of code and to handle the same, the series brings in a
> >> common code reusability between iris and venus. Aligning the common peices of
> >> venus and iris will be a work in progress, once we land the base driver for iris.
> >
> > This is not how it usually works. Especially not with the patches you
> > have posted.
> >
> > I have the following suggestion how this story can continue:
> > You can _start_ by reworking venus driver, separating the HFI /
> > firmware / etc interface to an internal interface in the driver. Then
> > implement Iris as a plug in for that interface. I might be mistaken
> > here, but I think this is the way how this can be beneficial for both
> > the video en/decoding on both old and new platforms.
>
> HFI/firmware interface is already confined to HFI layer in the existing venus
> driver. We explained in the previous discussion [1], on how the HFI change
> impacts the other layers by taking example of a DRC usecase. Please have a look
> considering the usecase and the impact it brings to other layers in the driver.

I have looked at it. And I still see huge change in the interface
side, but it doesn't tell me about the hardware changes.

Have you evaluated the other opportunity?

To have a common platform interface and firmware-specific backend?

You have already done a part of it, but from a different perspective.
You have tried to move common code out of the driver. Instead we are
asking you to do a different thing. Move non-common code within the
driver. Then add your code on top of that.

>
> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
> > Short rationale:
> > The venus driver has a history of supported platforms. There is
> > already some kind of buffer management in place. Both developers and
> > testers have spent their effort on finding issues there. Sending new
> > driver means that we have to spend the same amount of efforts on this.
> > Moreover, even from the porter point of view. You are creating new
> > bindings for the new hardware. Which do not follow the
> > venus-common.yaml. And they do not follow the defined bindings for the
> > recent venus platforms. Which means that as a developer I have to care
> > about two different ways to describe nearly the same hardware.>> Again qualcomm video team does not have a plan to support sm8550/x1e80100 on
> >> venus as the changes are too interleaved to absorb in venus driver. And there is
> >> significant interest in community to start validating video driver on sm8550 or
> >> x1e80100.
> >>
> >> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
> >>
> >> Regards,
> >> Vikash
> >
> >
> >
Vikash Garodia Dec. 20, 2023, 8:53 a.m. UTC | #11
On 12/20/2023 2:09 PM, Dmitry Baryshkov wrote:
> On Wed, 20 Dec 2023 at 10:14, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
>>
>> Hi,
>>
>> On 12/20/2023 1:07 PM, Dmitry Baryshkov wrote:
>>> On Wed, 20 Dec 2023 at 08:32, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
>>>>
>>>> Hi Dmitry,
>>>>
>>>> On 12/19/2023 12:08 AM, Dmitry Baryshkov wrote:
>>>>> On 18/12/2023 13:31, Dikshita Agarwal wrote:
>>>>>> This patch series introduces support for Qualcomm new video acceleration
>>>>>> hardware architecture, used for video stream decoding/encoding. This driver
>>>>>> is based on new communication protocol between video hardware and application
>>>>>> processor.
>>>>>
>>>>> This doesn't answer one important point, you have been asked for v1. What is the
>>>>> actual change point between Venus and Iris? What has been changed so much that
>>>>> it demands a separate driver. This is the main question for the cover letter,
>>>>> which has not been answered so far.
>>>>>
>>>>> From what I see from you bindings, the hardware is pretty close to what we see
>>>>> in the latest venus generations. I asssme that there was a change in the vcodec
>>>>> inteface to the firmware and other similar changes. Could you please point out,
>>>>> which parts of Venus driver do no longer work or are not applicable for sm8550
>>>>
>>>> The motivation behind having a separate IRIS driver was discussed earlier in [1]
>>>> In the same discussion, it was ellaborated on how the impact would be with
>>>> change in the new firmware interface and other video layers in the driver. I can
>>>> add this in cover letter in the next revision.
>>>
>>> Ok. So the changes cover the HFI interface. Is that correct?
>> Change wise, yes.
>>
>>>> We see some duplication of code and to handle the same, the series brings in a
>>>> common code reusability between iris and venus. Aligning the common peices of
>>>> venus and iris will be a work in progress, once we land the base driver for iris.
>>>
>>> This is not how it usually works. Especially not with the patches you
>>> have posted.
>>>
>>> I have the following suggestion how this story can continue:
>>> You can _start_ by reworking venus driver, separating the HFI /
>>> firmware / etc interface to an internal interface in the driver. Then
>>> implement Iris as a plug in for that interface. I might be mistaken
>>> here, but I think this is the way how this can be beneficial for both
>>> the video en/decoding on both old and new platforms.
>>
>> HFI/firmware interface is already confined to HFI layer in the existing venus
>> driver. We explained in the previous discussion [1], on how the HFI change
>> impacts the other layers by taking example of a DRC usecase. Please have a look
>> considering the usecase and the impact it brings to other layers in the driver.
> 
> I have looked at it. And I still see huge change in the interface
> side, but it doesn't tell me about the hardware changes.

I hope you noticed how the common layers like decoder, response, state layers
are impacted in handling one of usecase. Now add that to all the different
scenarios like seek, drain, DRC during seek, DRC during drain, etc.

> Have you evaluated the other opportunity?
> 
> To have a common platform interface and firmware-specific backend?
> 
> You have already done a part of it, but from a different perspective.
> You have tried to move common code out of the driver. Instead we are
> asking you to do a different thing. Move non-common code within the
> driver. Then add your code on top of that.

For common platform - yes, we are bringing in common stuff like PIL.
Other than that, abstraction to firmware interface is not that confined to one
layer. It spreads over decoder/encoder/common layers. Now when majority of the
layers/code is different, we planned to make it in parallel to venus and have a
common layer having common things to both iris and venus.

>>
>> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
>>> Short rationale:
>>> The venus driver has a history of supported platforms. There is
>>> already some kind of buffer management in place. Both developers and
>>> testers have spent their effort on finding issues there. Sending new
>>> driver means that we have to spend the same amount of efforts on this.
>>> Moreover, even from the porter point of view. You are creating new
>>> bindings for the new hardware. Which do not follow the
>>> venus-common.yaml. And they do not follow the defined bindings for the
>>> recent venus platforms. Which means that as a developer I have to care
>>> about two different ways to describe nearly the same hardware.>> Again qualcomm video team does not have a plan to support sm8550/x1e80100 on
>>>> venus as the changes are too interleaved to absorb in venus driver. And there is
>>>> significant interest in community to start validating video driver on sm8550 or
>>>> x1e80100.
>>>>
>>>> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
>>>>
>>>> Regards,
>>>> Vikash
>>>
>>>
>>>
> 
> 
>
Dmitry Baryshkov Dec. 20, 2023, 9:52 a.m. UTC | #12
On Wed, 20 Dec 2023 at 10:53, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
>
> On 12/20/2023 2:09 PM, Dmitry Baryshkov wrote:
> > On Wed, 20 Dec 2023 at 10:14, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
> >>
> >> Hi,
> >>
> >> On 12/20/2023 1:07 PM, Dmitry Baryshkov wrote:
> >>> On Wed, 20 Dec 2023 at 08:32, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
> >>>>
> >>>> Hi Dmitry,
> >>>>
> >>>> On 12/19/2023 12:08 AM, Dmitry Baryshkov wrote:
> >>>>> On 18/12/2023 13:31, Dikshita Agarwal wrote:
> >>>>>> This patch series introduces support for Qualcomm new video acceleration
> >>>>>> hardware architecture, used for video stream decoding/encoding. This driver
> >>>>>> is based on new communication protocol between video hardware and application
> >>>>>> processor.
> >>>>>
> >>>>> This doesn't answer one important point, you have been asked for v1. What is the
> >>>>> actual change point between Venus and Iris? What has been changed so much that
> >>>>> it demands a separate driver. This is the main question for the cover letter,
> >>>>> which has not been answered so far.
> >>>>>
> >>>>> From what I see from you bindings, the hardware is pretty close to what we see
> >>>>> in the latest venus generations. I asssme that there was a change in the vcodec
> >>>>> inteface to the firmware and other similar changes. Could you please point out,
> >>>>> which parts of Venus driver do no longer work or are not applicable for sm8550
> >>>>
> >>>> The motivation behind having a separate IRIS driver was discussed earlier in [1]
> >>>> In the same discussion, it was ellaborated on how the impact would be with
> >>>> change in the new firmware interface and other video layers in the driver. I can
> >>>> add this in cover letter in the next revision.
> >>>
> >>> Ok. So the changes cover the HFI interface. Is that correct?
> >> Change wise, yes.
> >>
> >>>> We see some duplication of code and to handle the same, the series brings in a
> >>>> common code reusability between iris and venus. Aligning the common peices of
> >>>> venus and iris will be a work in progress, once we land the base driver for iris.
> >>>
> >>> This is not how it usually works. Especially not with the patches you
> >>> have posted.
> >>>
> >>> I have the following suggestion how this story can continue:
> >>> You can _start_ by reworking venus driver, separating the HFI /
> >>> firmware / etc interface to an internal interface in the driver. Then
> >>> implement Iris as a plug in for that interface. I might be mistaken
> >>> here, but I think this is the way how this can be beneficial for both
> >>> the video en/decoding on both old and new platforms.
> >>
> >> HFI/firmware interface is already confined to HFI layer in the existing venus
> >> driver. We explained in the previous discussion [1], on how the HFI change
> >> impacts the other layers by taking example of a DRC usecase. Please have a look
> >> considering the usecase and the impact it brings to other layers in the driver.
> >
> > I have looked at it. And I still see huge change in the interface
> > side, but it doesn't tell me about the hardware changes.
>
> I hope you noticed how the common layers like decoder, response, state layers
> are impacted in handling one of usecase. Now add that to all the different
> scenarios like seek, drain, DRC during seek, DRC during drain, etc.

Yes, for sure.

>
> > Have you evaluated the other opportunity?
> >
> > To have a common platform interface and firmware-specific backend?
> >
> > You have already done a part of it, but from a different perspective.
> > You have tried to move common code out of the driver. Instead we are
> > asking you to do a different thing. Move non-common code within the
> > driver. Then add your code on top of that.
>
> For common platform - yes, we are bringing in common stuff like PIL.
> Other than that, abstraction to firmware interface is not that confined to one
> layer. It spreads over decoder/encoder/common layers. Now when majority of the
> layers/code is different, we planned to make it in parallel to venus and have a
> common layer having common things to both iris and venus.

My suggestion still holds. Start with this common platform code.
Rather than arguing back and forth, could you please perform an
experiment on the current venus driver and move firmware interface to
subdirs, leaving just the platform / PIL / formats / etc in place?
This will at least allow us to determine whether it is a feasible
concept or not.

>
> >>
> >> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
> >>> Short rationale:
> >>> The venus driver has a history of supported platforms. There is
> >>> already some kind of buffer management in place. Both developers and
> >>> testers have spent their effort on finding issues there. Sending new
> >>> driver means that we have to spend the same amount of efforts on this.
> >>> Moreover, even from the porter point of view. You are creating new
> >>> bindings for the new hardware. Which do not follow the
> >>> venus-common.yaml. And they do not follow the defined bindings for the
> >>> recent venus platforms. Which means that as a developer I have to care
> >>> about two different ways to describe nearly the same hardware.>> Again qualcomm video team does not have a plan to support sm8550/x1e80100 on
> >>>> venus as the changes are too interleaved to absorb in venus driver. And there is
> >>>> significant interest in community to start validating video driver on sm8550 or
> >>>> x1e80100.
> >>>>
> >>>> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
> >>>>
> >>>> Regards,
> >>>> Vikash
> >>>
> >>>
> >>>
> >
> >
> >
Abhinav Kumar Dec. 20, 2023, 6:55 p.m. UTC | #13
Hi Dmitry and Krzysztof

On 12/20/2023 1:52 AM, Dmitry Baryshkov wrote:
> On Wed, 20 Dec 2023 at 10:53, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
>>
>> On 12/20/2023 2:09 PM, Dmitry Baryshkov wrote:
>>> On Wed, 20 Dec 2023 at 10:14, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
>>>>
>>>> Hi,
>>>>
>>>> On 12/20/2023 1:07 PM, Dmitry Baryshkov wrote:
>>>>> On Wed, 20 Dec 2023 at 08:32, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
>>>>>>
>>>>>> Hi Dmitry,
>>>>>>
>>>>>> On 12/19/2023 12:08 AM, Dmitry Baryshkov wrote:
>>>>>>> On 18/12/2023 13:31, Dikshita Agarwal wrote:
>>>>>>>> This patch series introduces support for Qualcomm new video acceleration
>>>>>>>> hardware architecture, used for video stream decoding/encoding. This driver
>>>>>>>> is based on new communication protocol between video hardware and application
>>>>>>>> processor.
>>>>>>>
>>>>>>> This doesn't answer one important point, you have been asked for v1. What is the
>>>>>>> actual change point between Venus and Iris? What has been changed so much that
>>>>>>> it demands a separate driver. This is the main question for the cover letter,
>>>>>>> which has not been answered so far.
>>>>>>>
>>>>>>>  From what I see from you bindings, the hardware is pretty close to what we see
>>>>>>> in the latest venus generations. I asssme that there was a change in the vcodec
>>>>>>> inteface to the firmware and other similar changes. Could you please point out,
>>>>>>> which parts of Venus driver do no longer work or are not applicable for sm8550
>>>>>>
>>>>>> The motivation behind having a separate IRIS driver was discussed earlier in [1]
>>>>>> In the same discussion, it was ellaborated on how the impact would be with
>>>>>> change in the new firmware interface and other video layers in the driver. I can
>>>>>> add this in cover letter in the next revision.
>>>>>
>>>>> Ok. So the changes cover the HFI interface. Is that correct?
>>>> Change wise, yes.
>>>>
>>>>>> We see some duplication of code and to handle the same, the series brings in a
>>>>>> common code reusability between iris and venus. Aligning the common peices of
>>>>>> venus and iris will be a work in progress, once we land the base driver for iris.
>>>>>
>>>>> This is not how it usually works. Especially not with the patches you
>>>>> have posted.
>>>>>
>>>>> I have the following suggestion how this story can continue:
>>>>> You can _start_ by reworking venus driver, separating the HFI /
>>>>> firmware / etc interface to an internal interface in the driver. Then
>>>>> implement Iris as a plug in for that interface. I might be mistaken
>>>>> here, but I think this is the way how this can be beneficial for both
>>>>> the video en/decoding on both old and new platforms.
>>>>
>>>> HFI/firmware interface is already confined to HFI layer in the existing venus
>>>> driver. We explained in the previous discussion [1], on how the HFI change
>>>> impacts the other layers by taking example of a DRC usecase. Please have a look
>>>> considering the usecase and the impact it brings to other layers in the driver.
>>>
>>> I have looked at it. And I still see huge change in the interface
>>> side, but it doesn't tell me about the hardware changes.
>>
>> I hope you noticed how the common layers like decoder, response, state layers
>> are impacted in handling one of usecase. Now add that to all the different
>> scenarios like seek, drain, DRC during seek, DRC during drain, etc.
> 
> Yes, for sure.
> 
>>
>>> Have you evaluated the other opportunity?
>>>
>>> To have a common platform interface and firmware-specific backend?
>>>
>>> You have already done a part of it, but from a different perspective.
>>> You have tried to move common code out of the driver. Instead we are
>>> asking you to do a different thing. Move non-common code within the
>>> driver. Then add your code on top of that.
>>
>> For common platform - yes, we are bringing in common stuff like PIL.
>> Other than that, abstraction to firmware interface is not that confined to one
>> layer. It spreads over decoder/encoder/common layers. Now when majority of the
>> layers/code is different, we planned to make it in parallel to venus and have a
>> common layer having common things to both iris and venus.
> 
> My suggestion still holds. Start with this common platform code.
> Rather than arguing back and forth, could you please perform an
> experiment on the current venus driver and move firmware interface to
> subdirs, leaving just the platform / PIL / formats / etc in place?
> This will at least allow us to determine whether it is a feasible
> concept or not.
> 

Your comments are valid. The platform driver piece and some other pieces 
still are common between venus and iris despite this initial effort of 
moving common pieces out. I have also seen this from whatever I have 
reviewed.

Video team also acknowledges this part and internally I think they did 
evaluate this option and their feedback was, the more and more they 
changed, they were touching pretty much every file of venus.

The missing piece i think in all this discussion is that in addition to 
the forward channel, the reverse channel of HFI, based on which the rest 
of the video state machine changes should also be considered.

So even with respect to the code layout, its not just the forward 
communication but the backwards communication of fw--->hfi--->codec is 
becoming a challenge as the venus layers seem to only work with the hfi 
of venus.

For adding support for the new HFI events/communication, it was getting 
harder to extend venus.

What I certainly acknowledge is now with iris whether this can be dealt 
with better for future chipsets to avoid another re-write for another 
HFI as that will be too much of maintenance cost.

I will let the video team comment on this part.

Thanks

Abhinav





>>
>>>>
>>>> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
>>>>> Short rationale:
>>>>> The venus driver has a history of supported platforms. There is
>>>>> already some kind of buffer management in place. Both developers and
>>>>> testers have spent their effort on finding issues there. Sending new
>>>>> driver means that we have to spend the same amount of efforts on this.
>>>>> Moreover, even from the porter point of view. You are creating new
>>>>> bindings for the new hardware. Which do not follow the
>>>>> venus-common.yaml. And they do not follow the defined bindings for the
>>>>> recent venus platforms. Which means that as a developer I have to care
>>>>> about two different ways to describe nearly the same hardware.>> Again qualcomm video team does not have a plan to support sm8550/x1e80100 on
>>>>>> venus as the changes are too interleaved to absorb in venus driver. And there is
>>>>>> significant interest in community to start validating video driver on sm8550 or
>>>>>> x1e80100.
>>>>>>
>>>>>> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
>>>>>>
>>>>>> Regards,
>>>>>> Vikash
>>>>>
>>>>>
>>>>>
>>>
>>>
>>>
> 
> 
>
Nicolas Dufresne Dec. 20, 2023, 8:51 p.m. UTC | #14
Hi,

Le lundi 18 décembre 2023 à 17:01 +0530, Dikshita Agarwal a écrit :
> This patch series introduces support for Qualcomm new video acceleration
> hardware architecture, used for video stream decoding/encoding. This driver
> is based on new communication protocol between video hardware and application
> processor.
> This driver comes with below capabilities:
> - V4L2 complaint video driver with M2M and STREAMING capability.
> - Supports H264, H265, VP9 decoders.
> - Supports H264, H265 encoders.
> This driver comes with below features:
> - Centralized resource and memory management.
> - Centralized management of core and instance states.
> - Defines platform specific capabilities and features. As a results, it provides
>   a single point of control to enable/disable a given feature depending on 
>   specific platform capabilities.
> - Handles hardware interdependent configurations. For a given configuration from
>   client, the driver checks for hardware dependent configuration/s and updates
>   the same.
> - Handles multiple complex video scenarios involving state transitions - DRC,
>   Drain, Seek, back to back DRC, DRC during Drain sequence, DRC during Seek
>   sequence.
> - Introduces a flexible way for driver to subscribe for any property with
>   hardware. Hardware would inform driver with those subscribed property with any
>   change in value.
> - Introduces performance (clock and bus) model based on new hardware
>   architecture.
> - Introduces multi thread safe design to handle communication between client and
>   hardware.
> - Adapts encoder quality improvements available in new hardware architecture.
> - Implements asynchronous communication with hardware to achieve better
>   experience in low latency usecases.
> - Supports multi stage hardware architecture for encode/decode.
> - Output and capture planes are controlled independently. Thereby providing a
>   way to reconfigure individual plane.
> - Hardware packetization layer supports synchronization between configuration
>   packet and data packet.
> - Introduces a flexibility to receive a hardware response for a given command
>   packet.
> - Native hardware support of LAST flag which is mandatory to align with port
>   reconfiguration and DRAIN sequence as per V4L guidelines.
> - Native hardware support for drain sequence.
> 
> Changes done since v1[1]:
> - Patches are created as logical split instead of file by file.
> - Extracted common functionality between venus and iris driver and placed them
>   under common folder vcodec.
> - Flattened directory structure.
> - Restructured the code in a simplified layer architecture.
> - Implemented runtime PM, and dropped explicit power collapse thread in driver.
> - Moved to standard kernel log print api.
> - Simplified the bus and clock calculation logic.
> - Removed debug features like dma tracker, frame stats, debugfs.
> - Merged v4l2 and vidc layer as vidc in driver.
> - Removed separate probe for context bank.
> - Use of_device_get_match_data to get platform data.
> - Replaced complex macros with inline functions.
> - Migrated venus to iris names.
> - Addressed many other comments received on [1].
> 
> [1]: https://patchwork.kernel.org/project/linux-media/list/?series=770581 
> 
> Patch 1, adds dt binding for iris driver.
> 
> Patches 2-4, are introducing vcodec folder and moving common APIs like fw
> load/unload, buffer size calcualtions, read/write to shared queues to common
> files which are being used by both venus and iris drivers.
> This also moves the venus driver folder to vcodec folder.
> 
> Patch 5, adds the maintainers for iris driver.
> 
> Patch 6-29, adds core iris driver and enable decoder.
> 
> Patch 30-34, enable encoder functionality in iris driver.
> 
> Static tools like checkpatch, smatch, dt_binding_check, sparse and Coccinelle 
> run successfully with this driver. 
> 
>  The output of v4l2-compliance test looks like: 
> 
> v4l2-compliance SHA: not available, 64 bits
>  
> Cannot open device /dev/vido0, exiting.
> root@qemuarm64:/usr/bin# ./v4l2-compliance -d /dev/video0
> v4l2-compliance SHA: not available, 64 bits
>  
> Compliance test for iris_driver device /dev/video0:
>  
> Driver Info:
>         Driver name      : iris_driver
>         Card type        : iris_decoder
>         Bus info         : platform:iris_bus
>         Driver version   : 6.6.0
>         Capabilities     : 0x84204000
>                 Video Memory-to-Memory Multiplanar
>                 Streaming
>                 Extended Pix Format
>                 Device Capabilities
>         Device Caps      : 0x04204000
>                 Video Memory-to-Memory Multiplanar
>                 Streaming
>                 Extended Pix Format
>  
> Required ioctls:
>         test VIDIOC_QUERYCAP: OK
>  
> Allow for multiple opens:
>         test second /dev/video0 open: OK
>         test VIDIOC_QUERYCAP: OK
>         test VIDIOC_G/S_PRIORITY: OK
>                 fail: ../../../v4l-utils-1.18.1/utils/v4l2-compliance/v4l2-compliance.cpp(724): !ok
>         test for unlimited opens: FAIL

The test says:
        /*
         * There should *not* be an artificial limit to the number
         * of open()s you can do on a V4L2 device node. So test whether
         * you can open a device node at least 100 times.
         *
         * And please don't start rejecting opens in your driver at 101!
         * There really shouldn't be a limit in the driver.
         *
         * If there are resource limits, then check against those limits
         * where they are actually needed.
         */   

So might have been acceptable for old venus, but not for iris since its a new
driver. Discussion and solution is needed. This is, I suppose, limiting the
number of decode sessions ? I personally find that method easier for userspace
then let say failing at streamon or something, but clearly a discussion need to
take place here as this is failing the compliance.

>  
> Debug ioctls:
>         test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
>         test VIDIOC_LOG_STATUS: OK (Not Supported)
>  
> Input ioctls:
>         test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>         test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
>         test VIDIOC_ENUMAUDIO: OK (Not Supported)
>         test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
>         test VIDIOC_G/S_AUDIO: OK (Not Supported)
>         Inputs: 0 Audio Inputs: 0 Tuners: 0
>  
> Output ioctls:
>         test VIDIOC_G/S_MODULATOR: OK (Not Supported)
>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>         test VIDIOC_ENUMAUDOUT: OK (Not Supported)
>         test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
>         test VIDIOC_G/S_AUDOUT: OK (Not Supported)
>         Outputs: 0 Audio Outputs: 0 Modulators: 0
>  
> Input/Output configuration ioctls:
>         test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
>         test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
>         test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
>         test VIDIOC_G/S_EDID: OK (Not Supported)
>  
> Control ioctls:
>         test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
>         test VIDIOC_QUERYCTRL: OK
>         test VIDIOC_G/S_CTRL: OK
>         test VIDIOC_G/S/TRY_EXT_CTRLS: OK
>         test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
>         test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
>         Standard Controls: 48 Private Controls: 0
>  
> Format ioctls:
>         test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
>         test VIDIOC_G/S_PARM: OK (Not Supported)
>         test VIDIOC_G_FBUF: OK (Not Supported)
>         test VIDIOC_G_FMT: OK
>         test VIDIOC_TRY_FMT: OK
>         test VIDIOC_S_FMT: OK
>         test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
>         test Cropping: OK
>         test Composing: OK
>         test Scaling: OK
>  
> Codec ioctls:
>         test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
>         test VIDIOC_G_ENC_INDEX: OK (Not Supported)
>         test VIDIOC_(TRY_)DECODER_CMD: OK
>  
> Buffer ioctls:
>         testVIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
>         test VIDIOC_EXPBUF: OK (Not Supported)
>         test Requests: OK (Not Supported)
>  
> Total for iris_driver device /dev/video0: 44, Succeeded: 43, Failed: 1, Warnings: 0
>  
> Compliance test for iris_driver device /dev/video1:
>  
> Driver Info:
>         Driver name      : iris_driver
>         Card type        : iris_encoder
>         Bus info         : platform:iris_bus
>         Driver version   : 6.6.0
>         Capabilities     : 0x84204000
>                 Video Memory-to-Memory Multiplanar
>                 Streaming
>                 Extended Pix Format
>                 Device Capabilities
>         Device Caps      : 0x04204000
>                 Video Memory-to-Memory Multiplanar
>                 Streaming
>                 Extended Pix Format
>  
> Required ioctls:
>         test VIDIOC_QUERYCAP: OK
>  
> Allow for multiple opens:
>         test second /dev/video1 open: OK
>         test VIDIOC_QUERYCAP: OK
>         test VIDIOC_G/S_PRIORITY: OK
>                 fail: ../../../v4l-utils-1.18.1/utils/v4l2-compliance/v4l2-compliance.cpp(724): !ok
>         test for unlimited opens: FAIL
>  
> Debug ioctls:
>         test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
>         test VIDIOC_LOG_STATUS: OK (Not Supported)
>  
> Input ioctls:
>         test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>         test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
>         test VIDIOC_ENUMAUDIO: OK (Not Supported)
>         test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
>         test VIDIOC_G/S_AUDIO: OK (Not Supported)
>         Inputs: 0 Audio Inputs: 0 Tuners: 0
>  
> Output ioctls:
>         test VIDIOC_G/S_MODULATOR: OK (Not Supported)
>         test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
>         test VIDIOC_ENUMAUDOUT: OK (Not Supported)
>         test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
>         test VIDIOC_G/S_AUDOUT: OK (Not Supported)
>         Outputs: 0 Audio Outputs: 0 Modulators: 0
>  
> Input/Output configuration ioctls:
>         test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
>         test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
>         test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
>         test VIDIOC_G/S_EDID: OK (Not Supported)
>  
> Control ioctls:
>         test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
>         test VIDIOC_QUERYCTRL: OK
>         test VIDIOC_G/S_CTRL: OK
>         test VIDIOC_G/S/TRY_EXT_CTRLS: OK
>         test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
>         test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
>         Standard Controls: 48 Private Controls: 0
>  
> Format ioctls:
>         test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
>         test VIDIOC_G/S_PARM: OK
>         test VIDIOC_G_FBUF: OK (Not Supported)
>         test VIDIOC_G_FMT: OK
>         test VIDIOC_TRY_FMT: OK
>         test VIDIOC_S_FMT: OK
>         test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
>         test Cropping: OK
>         test Composing: OK
>         test Scaling: OK (Not Supported)
>  
> Codec ioctls:
>         test VIDIOC_(TRY_)ENCODER_CMD: OK
>         test VIDIOC_G_ENC_INDEX: OK (Not Supported)
>         test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
>  
> Buffer ioctls:
>         test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
>         test VIDIOC_EXPBUF: OK (Not Supported)
>         test Requests: OK (Not Supported)
>  
> Total for iris_driver device /dev/video1: 44, Succeeded: 43, Failed: 1, Warnings: 0
> 
> Dikshita Agarwal (27):
>   media: introduce common helpers for video firmware handling
>   media: introduce common helpers for queues handling
>   media: introduce common helpers for buffer size calculation

These helper make it possible to introduce regressions, did you run compliance
tests against a venus  based system to make sure ?

On top of this, initial submission and core modification to CODEC drivers are
now expected to be accompanied with fluster [0] results. This will help later
with integration testing enablement into KernelCI and will show that you made
sure the new driver is performing fairly well and is comparable to venus
(results available in Kernel CI, let me know if you have a hard time finding the
results).

[0] https://github.com/fluendo/fluster kernel CI uses GStreamer decoder, but
ffmpeg support is also available in the test runner.


>   dt-bindings: media: Add sm8550 dt schema
>   media: MAINTAINERS: Add Qualcomm Iris video accelerator driver
>   media: iris: register video device to platform driver
>   media: iris: initialize power resources
>   media: iris: introduce state machine for iris core
>   media: iris: initialize shared queues for host and firmware
>     communication
>   media: iris: add PIL functionality for video firmware
>   media: iris: introduce packetization layer for creating HFI packets
>   media: iris: add video processing unit(VPU) specific register handling
>   media: iris: introduce platform specific capabilities for core and
>     instance
>   media: iris: add handling for interrupt service routine(ISR) invoked
>     by hardware
>   media: iris: implement iris v4l2_ctrl_ops and prepare capabilities
>   media: iris: implement vb2_ops queue setup
>   media: iris: implement HFI to queue and release buffers
>   media: iris: add video hardware internal buffer count and size
>     calculation
>   media: iris: implement internal buffer management
>   media: iris: introduce instance states
>   media: iris: implement vb2 streaming ops on capture and output planes
>   media: iris: implement vb2 ops for buf_queue and firmware response
>   media: iris: register video encoder device to platform driver
>   media: iris: add platform specific instance capabilities for encoder
>   media: iris: implement iris v4l2 ioctl ops supported by encoder
>   media: iris: add vb2 streaming and buffer ops for encoder
>   media: iris: add power management for encoder
> 
> Vikash Garodia (7):
>   media: iris: implement iris v4l2 file ops
>   media: iris: introduce and implement iris vb2 mem ops
>   media: iris: implement iris v4l2 ioctl ops supported by decoder
>   media: iris: subscribe input and output properties to firmware
>   media: iris: subscribe src change and handle firmware responses
>   media: iris: add instance sub states and implement DRC and Drain
>     sequence
>   media: iris: implement power management
> 
>  .../bindings/media/qcom,sm8550-iris.yaml           |  177 ++
>  MAINTAINERS                                        |   11 +
>  drivers/media/platform/qcom/Kconfig                |    3 +-
>  drivers/media/platform/qcom/Makefile               |    3 +-
>  drivers/media/platform/qcom/vcodec/buffers.c       |  103 ++
>  drivers/media/platform/qcom/vcodec/buffers.h       |   15 +
>  drivers/media/platform/qcom/vcodec/firmware.c      |  147 ++
>  drivers/media/platform/qcom/vcodec/firmware.h      |   21 +
>  drivers/media/platform/qcom/vcodec/hfi_queue.c     |  258 +++
>  drivers/media/platform/qcom/vcodec/hfi_queue.h     |  129 ++
>  drivers/media/platform/qcom/vcodec/iris/Kconfig    |   13 +
>  drivers/media/platform/qcom/vcodec/iris/Makefile   |   26 +
>  .../media/platform/qcom/vcodec/iris/hfi_defines.h  |  386 +++++
>  .../media/platform/qcom/vcodec/iris/iris_buffer.c  |  833 +++++++++
>  .../media/platform/qcom/vcodec/iris/iris_buffer.h  |   65 +
>  .../media/platform/qcom/vcodec/iris/iris_common.h  |  147 ++
>  .../media/platform/qcom/vcodec/iris/iris_core.c    |  110 ++
>  .../media/platform/qcom/vcodec/iris/iris_core.h    |  121 ++
>  .../media/platform/qcom/vcodec/iris/iris_ctrls.c   | 1782 ++++++++++++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_ctrls.h   |   71 +
>  .../media/platform/qcom/vcodec/iris/iris_helpers.c | 1099 ++++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_helpers.h |   68 +
>  drivers/media/platform/qcom/vcodec/iris/iris_hfi.c |  917 ++++++++++
>  drivers/media/platform/qcom/vcodec/iris/iris_hfi.h |   47 +
>  .../platform/qcom/vcodec/iris/iris_hfi_packet.c    |  729 ++++++++
>  .../platform/qcom/vcodec/iris/iris_hfi_packet.h    |  118 ++
>  .../platform/qcom/vcodec/iris/iris_hfi_response.c  | 1097 ++++++++++++
>  .../platform/qcom/vcodec/iris/iris_hfi_response.h  |   20 +
>  .../platform/qcom/vcodec/iris/iris_instance.h      |  106 ++
>  .../media/platform/qcom/vcodec/iris/iris_power.c   |  178 ++
>  .../media/platform/qcom/vcodec/iris/iris_power.h   |   15 +
>  .../media/platform/qcom/vcodec/iris/iris_probe.c   |  357 ++++
>  .../media/platform/qcom/vcodec/iris/iris_state.c   |  453 +++++
>  .../media/platform/qcom/vcodec/iris/iris_state.h   |   78 +
>  drivers/media/platform/qcom/vcodec/iris/iris_vb2.c |  457 +++++
>  drivers/media/platform/qcom/vcodec/iris/iris_vb2.h |   28 +
>  .../media/platform/qcom/vcodec/iris/iris_vdec.c    | 1211 +++++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_vdec.h    |   25 +
>  .../media/platform/qcom/vcodec/iris/iris_venc.c    |  948 +++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_venc.h    |   27 +
>  .../media/platform/qcom/vcodec/iris/iris_vidc.c    | 1419 ++++++++++++++++
>  .../media/platform/qcom/vcodec/iris/iris_vidc.h    |   15 +
>  .../platform/qcom/vcodec/iris/platform_common.c    |   29 +
>  .../platform/qcom/vcodec/iris/platform_common.h    |  323 ++++
>  .../platform/qcom/vcodec/iris/platform_sm8550.c    | 1190 +++++++++++++
>  .../media/platform/qcom/vcodec/iris/resources.c    |  506 ++++++
>  .../media/platform/qcom/vcodec/iris/resources.h    |   44 +
>  .../media/platform/qcom/vcodec/iris/vpu_common.c   |  158 ++
>  .../media/platform/qcom/vcodec/iris/vpu_common.h   |   52 +
>  .../media/platform/qcom/vcodec/iris/vpu_iris3.c    |  568 +++++++
>  .../media/platform/qcom/vcodec/iris/vpu_iris3.h    |   13 +
>  .../platform/qcom/vcodec/iris/vpu_iris3_buffer.c   |  395 +++++
>  .../platform/qcom/vcodec/iris/vpu_iris3_buffer.h   | 1469 ++++++++++++++++
>  .../platform/qcom/vcodec/iris/vpu_iris3_power.c    |  148 ++
>  .../platform/qcom/vcodec/iris/vpu_iris3_power.h    |   13 +
>  .../media/platform/qcom/{ => vcodec}/venus/Kconfig |    0
>  .../platform/qcom/{ => vcodec}/venus/Makefile      |    5 +-
>  .../media/platform/qcom/{ => vcodec}/venus/core.c  |  102 +-
>  .../media/platform/qcom/{ => vcodec}/venus/core.h  |    0
>  .../media/platform/qcom/{ => vcodec}/venus/dbgfs.c |    0
>  .../media/platform/qcom/{ => vcodec}/venus/dbgfs.h |    0
>  .../platform/qcom/vcodec/venus/firmware_no_tz.c    |  194 +++
>  .../platform/qcom/vcodec/venus/firmware_no_tz.h    |   19 +
>  .../platform/qcom/{ => vcodec}/venus/helpers.c     |  172 +-
>  .../platform/qcom/{ => vcodec}/venus/helpers.h     |    2 +-
>  .../media/platform/qcom/{ => vcodec}/venus/hfi.c   |    0
>  .../media/platform/qcom/{ => vcodec}/venus/hfi.h   |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_cmds.c    |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_cmds.h    |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_helper.h  |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_msgs.c    |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_msgs.h    |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_parser.c  |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_parser.h  |    0
>  .../qcom/{ => vcodec}/venus/hfi_plat_bufs.h        |    4 +-
>  .../qcom/{ => vcodec}/venus/hfi_plat_bufs_v6.c     |   10 +-
>  .../qcom/{ => vcodec}/venus/hfi_platform.c         |    0
>  .../qcom/{ => vcodec}/venus/hfi_platform.h         |    0
>  .../qcom/{ => vcodec}/venus/hfi_platform_v4.c      |    0
>  .../qcom/{ => vcodec}/venus/hfi_platform_v6.c      |    0
>  .../platform/qcom/{ => vcodec}/venus/hfi_venus.c   |  521 +-----
>  .../platform/qcom/{ => vcodec}/venus/hfi_venus.h   |    0
>  .../qcom/{ => vcodec}/venus/hfi_venus_io.h         |    0
>  .../platform/qcom/{ => vcodec}/venus/pm_helpers.c  |    0
>  .../platform/qcom/{ => vcodec}/venus/pm_helpers.h  |    0
>  .../media/platform/qcom/{ => vcodec}/venus/vdec.c  |    5 +-
>  .../media/platform/qcom/{ => vcodec}/venus/vdec.h  |    0
>  .../platform/qcom/{ => vcodec}/venus/vdec_ctrls.c  |    0
>  .../media/platform/qcom/{ => vcodec}/venus/venc.c  |    0
>  .../media/platform/qcom/{ => vcodec}/venus/venc.h  |    0
>  .../platform/qcom/{ => vcodec}/venus/venc_ctrls.c  |    0
>  drivers/media/platform/qcom/venus/firmware.c       |  363 ----
>  drivers/media/platform/qcom/venus/firmware.h       |   26 -
>  93 files changed, 19175 insertions(+), 989 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/media/qcom,sm8550-iris.yaml
>  create mode 100644 drivers/media/platform/qcom/vcodec/buffers.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/buffers.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/firmware.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/firmware.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/hfi_queue.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/hfi_queue.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/Kconfig
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/Makefile
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/hfi_defines.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_buffer.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_buffer.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_common.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_core.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_core.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_ctrls.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_ctrls.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_helpers.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_helpers.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_packet.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_packet.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_response.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_hfi_response.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_instance.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_power.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_power.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_probe.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_state.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_state.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vb2.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vb2.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vdec.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vdec.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_venc.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_venc.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vidc.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/iris_vidc.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_common.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_common.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/platform_sm8550.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/resources.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/resources.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_common.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_common.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_buffer.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_buffer.h
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_power.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/iris/vpu_iris3_power.h
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/Kconfig (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/Makefile (75%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/core.c (91%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/core.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/dbgfs.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/dbgfs.h (100%)
>  create mode 100644 drivers/media/platform/qcom/vcodec/venus/firmware_no_tz.c
>  create mode 100644 drivers/media/platform/qcom/vcodec/venus/firmware_no_tz.h
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/helpers.c (90%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/helpers.h (98%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_cmds.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_cmds.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_helper.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_msgs.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_msgs.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_parser.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_parser.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_plat_bufs.h (94%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_plat_bufs_v6.c (99%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform_v4.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_platform_v6.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus.c (73%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/hfi_venus_io.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/pm_helpers.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/pm_helpers.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec.c (99%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/vdec_ctrls.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/venc.c (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/venc.h (100%)
>  rename drivers/media/platform/qcom/{ => vcodec}/venus/venc_ctrls.c (100%)
>  delete mode 100644 drivers/media/platform/qcom/venus/firmware.c
>  delete mode 100644 drivers/media/platform/qcom/venus/firmware.h
>
Dmitry Baryshkov Dec. 20, 2023, 9:24 p.m. UTC | #15
Hi Abhinav,

On Wed, 20 Dec 2023 at 20:55, Abhinav Kumar <quic_abhinavk@quicinc.com> wrote:
>
> Hi Dmitry and Krzysztof
>
> On 12/20/2023 1:52 AM, Dmitry Baryshkov wrote:
> > On Wed, 20 Dec 2023 at 10:53, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
> >>
> >> On 12/20/2023 2:09 PM, Dmitry Baryshkov wrote:
> >>> On Wed, 20 Dec 2023 at 10:14, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
> >>>>
> >>>> Hi,
> >>>>
> >>>> On 12/20/2023 1:07 PM, Dmitry Baryshkov wrote:
> >>>>> On Wed, 20 Dec 2023 at 08:32, Vikash Garodia <quic_vgarodia@quicinc.com> wrote:
> >>>>>>
> >>>>>> Hi Dmitry,
> >>>>>>
> >>>>>> On 12/19/2023 12:08 AM, Dmitry Baryshkov wrote:
> >>>>>>> On 18/12/2023 13:31, Dikshita Agarwal wrote:
> >>>>>>>> This patch series introduces support for Qualcomm new video acceleration
> >>>>>>>> hardware architecture, used for video stream decoding/encoding. This driver
> >>>>>>>> is based on new communication protocol between video hardware and application
> >>>>>>>> processor.
> >>>>>>>
> >>>>>>> This doesn't answer one important point, you have been asked for v1. What is the
> >>>>>>> actual change point between Venus and Iris? What has been changed so much that
> >>>>>>> it demands a separate driver. This is the main question for the cover letter,
> >>>>>>> which has not been answered so far.
> >>>>>>>
> >>>>>>>  From what I see from you bindings, the hardware is pretty close to what we see
> >>>>>>> in the latest venus generations. I asssme that there was a change in the vcodec
> >>>>>>> inteface to the firmware and other similar changes. Could you please point out,
> >>>>>>> which parts of Venus driver do no longer work or are not applicable for sm8550
> >>>>>>
> >>>>>> The motivation behind having a separate IRIS driver was discussed earlier in [1]
> >>>>>> In the same discussion, it was ellaborated on how the impact would be with
> >>>>>> change in the new firmware interface and other video layers in the driver. I can
> >>>>>> add this in cover letter in the next revision.
> >>>>>
> >>>>> Ok. So the changes cover the HFI interface. Is that correct?
> >>>> Change wise, yes.
> >>>>
> >>>>>> We see some duplication of code and to handle the same, the series brings in a
> >>>>>> common code reusability between iris and venus. Aligning the common peices of
> >>>>>> venus and iris will be a work in progress, once we land the base driver for iris.
> >>>>>
> >>>>> This is not how it usually works. Especially not with the patches you
> >>>>> have posted.
> >>>>>
> >>>>> I have the following suggestion how this story can continue:
> >>>>> You can _start_ by reworking venus driver, separating the HFI /
> >>>>> firmware / etc interface to an internal interface in the driver. Then
> >>>>> implement Iris as a plug in for that interface. I might be mistaken
> >>>>> here, but I think this is the way how this can be beneficial for both
> >>>>> the video en/decoding on both old and new platforms.
> >>>>
> >>>> HFI/firmware interface is already confined to HFI layer in the existing venus
> >>>> driver. We explained in the previous discussion [1], on how the HFI change
> >>>> impacts the other layers by taking example of a DRC usecase. Please have a look
> >>>> considering the usecase and the impact it brings to other layers in the driver.
> >>>
> >>> I have looked at it. And I still see huge change in the interface
> >>> side, but it doesn't tell me about the hardware changes.
> >>
> >> I hope you noticed how the common layers like decoder, response, state layers
> >> are impacted in handling one of usecase. Now add that to all the different
> >> scenarios like seek, drain, DRC during seek, DRC during drain, etc.
> >
> > Yes, for sure.
> >
> >>
> >>> Have you evaluated the other opportunity?
> >>>
> >>> To have a common platform interface and firmware-specific backend?
> >>>
> >>> You have already done a part of it, but from a different perspective.
> >>> You have tried to move common code out of the driver. Instead we are
> >>> asking you to do a different thing. Move non-common code within the
> >>> driver. Then add your code on top of that.
> >>
> >> For common platform - yes, we are bringing in common stuff like PIL.
> >> Other than that, abstraction to firmware interface is not that confined to one
> >> layer. It spreads over decoder/encoder/common layers. Now when majority of the
> >> layers/code is different, we planned to make it in parallel to venus and have a
> >> common layer having common things to both iris and venus.
> >
> > My suggestion still holds. Start with this common platform code.
> > Rather than arguing back and forth, could you please perform an
> > experiment on the current venus driver and move firmware interface to
> > subdirs, leaving just the platform / PIL / formats / etc in place?
> > This will at least allow us to determine whether it is a feasible
> > concept or not.
> >
>
> Your comments are valid. The platform driver piece and some other pieces
> still are common between venus and iris despite this initial effort of
> moving common pieces out. I have also seen this from whatever I have
> reviewed.
>
> Video team also acknowledges this part and internally I think they did
> evaluate this option and their feedback was, the more and more they
> changed, they were touching pretty much every file of venus.

This is fine from my POV. Splitting the the common functionality also
touched a significant part of the venus driver in a pretty bad way.

> The missing piece i think in all this discussion is that in addition to
> the forward channel, the reverse channel of HFI, based on which the rest
> of the video state machine changes should also be considered.
>
> So even with respect to the code layout, its not just the forward
> communication but the backwards communication of fw--->hfi--->codec is
> becoming a challenge as the venus layers seem to only work with the hfi
> of venus.

Again, this is a question of the platform backend part. Nobody
questions that newer platforms have their own driver interface.
We are not asking your team to add if(new) { foo; } else { bar; }
conditions all over the code. Instead we have been asking to split all
platform specifics to the 'backend'. Compare this with mdp4, mdp5 and
dpu backends of the single drm/msm frontend. Or with a similar
approach found in other DRM drivers. Adding new driver is frequently
unjustified, instead the existing driver gets extended to support
different generations.

> For adding support for the new HFI events/communication, it was getting
> harder to extend venus.
>
> What I certainly acknowledge is now with iris whether this can be dealt
> with better for future chipsets to avoid another re-write for another
> HFI as that will be too much of maintenance cost.

Another approach, which might also be fine, if that looks better from
your point of view. The current venus driver might have issues with
the internal interfaces. Or it might be not suitable for the backends.
In this case, can we please get older platforms also supported by the
iris driver? This will be a very simple case then: the old deprecated
driver, being phased out and removed, and a new one, which is being
phased in.

The problem is very simple from my side. I do not want to end up in a
situation where we have to change platform code for both drivers if
there is any common issue. Neither would I like for venus and iris
bindings to diverge more than necessary. And as you have seen from my
comments, the iris bindings already do not follow the venus example.

> I will let the video team comment on this part.
>
> Thanks
>
> Abhinav
>
>
>
>
>
> >>
> >>>>
> >>>> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
> >>>>> Short rationale:
> >>>>> The venus driver has a history of supported platforms. There is
> >>>>> already some kind of buffer management in place. Both developers and
> >>>>> testers have spent their effort on finding issues there. Sending new
> >>>>> driver means that we have to spend the same amount of efforts on this.
> >>>>> Moreover, even from the porter point of view. You are creating new
> >>>>> bindings for the new hardware. Which do not follow the
> >>>>> venus-common.yaml. And they do not follow the defined bindings for the
> >>>>> recent venus platforms. Which means that as a developer I have to care
> >>>>> about two different ways to describe nearly the same hardware.>> Again qualcomm video team does not have a plan to support sm8550/x1e80100 on
> >>>>>> venus as the changes are too interleaved to absorb in venus driver. And there is
> >>>>>> significant interest in community to start validating video driver on sm8550 or
> >>>>>> x1e80100.
> >>>>>>
> >>>>>> [1] https://lore.kernel.org/lkml/8c97d866-1cab-0106-4ab3-3ca070945ef7@quicinc.com/
> >>>>>>
> >>>>>> Regards,
> >>>>>> Vikash
Vikash Garodia Feb. 29, 2024, 3:09 p.m. UTC | #16
Hello All,

On 12/18/2023 5:01 PM, Dikshita Agarwal wrote:
> This patch series introduces support for Qualcomm new video acceleration
> hardware architecture, used for video stream decoding/encoding. This driver
> is based on new communication protocol between video hardware and application
> processor.
> This driver comes with below capabilities:
> - V4L2 complaint video driver with M2M and STREAMING capability.
> - Supports H264, H265, VP9 decoders.
> - Supports H264, H265 encoders.
> This driver comes with below features:
> - Centralized resource and memory management.
> - Centralized management of core and instance states.
> - Defines platform specific capabilities and features. As a results, it provides
>   a single point of control to enable/disable a given feature depending on 
>   specific platform capabilities.
> - Handles hardware interdependent configurations. For a given configuration from
>   client, the driver checks for hardware dependent configuration/s and updates
>   the same.
> - Handles multiple complex video scenarios involving state transitions - DRC,
>   Drain, Seek, back to back DRC, DRC during Drain sequence, DRC during Seek
>   sequence.
> - Introduces a flexible way for driver to subscribe for any property with
>   hardware. Hardware would inform driver with those subscribed property with any
>   change in value.
> - Introduces performance (clock and bus) model based on new hardware
>   architecture.
> - Introduces multi thread safe design to handle communication between client and
>   hardware.
> - Adapts encoder quality improvements available in new hardware architecture.
> - Implements asynchronous communication with hardware to achieve better
>   experience in low latency usecases.
> - Supports multi stage hardware architecture for encode/decode.
> - Output and capture planes are controlled independently. Thereby providing a
>   way to reconfigure individual plane.
> - Hardware packetization layer supports synchronization between configuration
>   packet and data packet.
> - Introduces a flexibility to receive a hardware response for a given command
>   packet.
> - Native hardware support of LAST flag which is mandatory to align with port
>   reconfiguration and DRAIN sequence as per V4L guidelines.
> - Native hardware support for drain sequence.

1. We considered enhancing the venus driver to support iris functionality but
concluded that the result would essentially be two parallel drivers implemented
in the same folder.
2. Although the underlying hardware for venus and iris are quite similar, but
there are other factors which brings the need of new driver:
   a. the host firmware interface (HFI) changed between the two. Venus supports
HFI protocol 1.0 while iris supports HFI protocol 2.0.
   b. unlike HFI protocol 1.0, HFI protocol 2.0 is better aligned to V4L2 APIs.
   c. iris driver modularize platforms, hardware variants, and states to extend
it for any upcoming SOC. Thereby more extendable to newer SOCs in future.
   d. Iris also supports many advanced features.
3. Based on the comments received on posted iris driver [1], we evaluated it
further and to better align with the upstream standard and practices, we
acknowledge that even though iris driver is the way forward, it would be ideal
to bring in the Venus hardwares enabled in this driver.
4. Hence, we decided to rework iris driver to add support of HFI protocol 1.0 as
well.
5. Initially we would start with adding support for one HFI protocol 1.0 based
platform which would be SM8250.
6. SM8250 enablement on iris driver would be incremental, starting with basic
decode for H264 codec.
7. In long-term, all venus supported platforms would be migrated to iris.
8. Iris driver and venus driver will co-exist till remaining supported targets
also gets migrated to iris driver.
9. We would continue to support and maintain venus driver during this phased out
approach.

Please share your thoughts on the above proposal.

[1]
https://patchwork.kernel.org/project/linux-media/cover/1702899149-21321-1-git-send-email-quic_dikshita@quicinc.com/#25643473

Regards,
Vikash
Hans Verkuil March 12, 2024, 10:37 a.m. UTC | #17
Hi Vikash,

On 2/29/24 16:09, Vikash Garodia wrote:
> Hello All,
> 
> On 12/18/2023 5:01 PM, Dikshita Agarwal wrote:
>> This patch series introduces support for Qualcomm new video acceleration
>> hardware architecture, used for video stream decoding/encoding. This driver
>> is based on new communication protocol between video hardware and application
>> processor.
>> This driver comes with below capabilities:
>> - V4L2 complaint video driver with M2M and STREAMING capability.
>> - Supports H264, H265, VP9 decoders.
>> - Supports H264, H265 encoders.
>> This driver comes with below features:
>> - Centralized resource and memory management.
>> - Centralized management of core and instance states.
>> - Defines platform specific capabilities and features. As a results, it provides
>>   a single point of control to enable/disable a given feature depending on 
>>   specific platform capabilities.
>> - Handles hardware interdependent configurations. For a given configuration from
>>   client, the driver checks for hardware dependent configuration/s and updates
>>   the same.
>> - Handles multiple complex video scenarios involving state transitions - DRC,
>>   Drain, Seek, back to back DRC, DRC during Drain sequence, DRC during Seek
>>   sequence.
>> - Introduces a flexible way for driver to subscribe for any property with
>>   hardware. Hardware would inform driver with those subscribed property with any
>>   change in value.
>> - Introduces performance (clock and bus) model based on new hardware
>>   architecture.
>> - Introduces multi thread safe design to handle communication between client and
>>   hardware.
>> - Adapts encoder quality improvements available in new hardware architecture.
>> - Implements asynchronous communication with hardware to achieve better
>>   experience in low latency usecases.
>> - Supports multi stage hardware architecture for encode/decode.
>> - Output and capture planes are controlled independently. Thereby providing a
>>   way to reconfigure individual plane.
>> - Hardware packetization layer supports synchronization between configuration
>>   packet and data packet.
>> - Introduces a flexibility to receive a hardware response for a given command
>>   packet.
>> - Native hardware support of LAST flag which is mandatory to align with port
>>   reconfiguration and DRAIN sequence as per V4L guidelines.
>> - Native hardware support for drain sequence.
> 
> 1. We considered enhancing the venus driver to support iris functionality but
> concluded that the result would essentially be two parallel drivers implemented
> in the same folder.
> 2. Although the underlying hardware for venus and iris are quite similar, but
> there are other factors which brings the need of new driver:
>    a. the host firmware interface (HFI) changed between the two. Venus supports
> HFI protocol 1.0 while iris supports HFI protocol 2.0.
>    b. unlike HFI protocol 1.0, HFI protocol 2.0 is better aligned to V4L2 APIs.
>    c. iris driver modularize platforms, hardware variants, and states to extend
> it for any upcoming SOC. Thereby more extendable to newer SOCs in future.
>    d. Iris also supports many advanced features.
> 3. Based on the comments received on posted iris driver [1], we evaluated it
> further and to better align with the upstream standard and practices, we
> acknowledge that even though iris driver is the way forward, it would be ideal
> to bring in the Venus hardwares enabled in this driver.
> 4. Hence, we decided to rework iris driver to add support of HFI protocol 1.0 as
> well.
> 5. Initially we would start with adding support for one HFI protocol 1.0 based
> platform which would be SM8250.
> 6. SM8250 enablement on iris driver would be incremental, starting with basic
> decode for H264 codec.
> 7. In long-term, all venus supported platforms would be migrated to iris.
> 8. Iris driver and venus driver will co-exist till remaining supported targets
> also gets migrated to iris driver.
> 9. We would continue to support and maintain venus driver during this phased out
> approach.
> 
> Please share your thoughts on the above proposal.

I think this is a reasonable approach: the venus driver is quite old and it was
created when we were at more-or-less the same time also developing better codec
frameworks. So it is not quite up-to-date with all the latest requirements.

Starting with a clean slate for the iris driver and then add support for venus
platforms to the iris driver makes sense.

Just one serious concern: who will do the venus platform migration? Are there resources
available to do that work? Or is this just wishful thinking?

Regards,

	Hans

> 
> [1]
> https://patchwork.kernel.org/project/linux-media/cover/1702899149-21321-1-git-send-email-quic_dikshita@quicinc.com/#25643473
> 
> Regards,
> Vikash
>
Vikash Garodia March 15, 2024, 1:51 p.m. UTC | #18
Hi Hans,

On 3/12/2024 4:07 PM, Hans Verkuil wrote:
> Hi Vikash,
> 
> On 2/29/24 16:09, Vikash Garodia wrote:
>> Hello All,
>>
>> On 12/18/2023 5:01 PM, Dikshita Agarwal wrote:
>>> This patch series introduces support for Qualcomm new video acceleration
>>> hardware architecture, used for video stream decoding/encoding. This driver
>>> is based on new communication protocol between video hardware and application
>>> processor.
>>> This driver comes with below capabilities:
>>> - V4L2 complaint video driver with M2M and STREAMING capability.
>>> - Supports H264, H265, VP9 decoders.
>>> - Supports H264, H265 encoders.
>>> This driver comes with below features:
>>> - Centralized resource and memory management.
>>> - Centralized management of core and instance states.
>>> - Defines platform specific capabilities and features. As a results, it provides
>>>   a single point of control to enable/disable a given feature depending on 
>>>   specific platform capabilities.
>>> - Handles hardware interdependent configurations. For a given configuration from
>>>   client, the driver checks for hardware dependent configuration/s and updates
>>>   the same.
>>> - Handles multiple complex video scenarios involving state transitions - DRC,
>>>   Drain, Seek, back to back DRC, DRC during Drain sequence, DRC during Seek
>>>   sequence.
>>> - Introduces a flexible way for driver to subscribe for any property with
>>>   hardware. Hardware would inform driver with those subscribed property with any
>>>   change in value.
>>> - Introduces performance (clock and bus) model based on new hardware
>>>   architecture.
>>> - Introduces multi thread safe design to handle communication between client and
>>>   hardware.
>>> - Adapts encoder quality improvements available in new hardware architecture.
>>> - Implements asynchronous communication with hardware to achieve better
>>>   experience in low latency usecases.
>>> - Supports multi stage hardware architecture for encode/decode.
>>> - Output and capture planes are controlled independently. Thereby providing a
>>>   way to reconfigure individual plane.
>>> - Hardware packetization layer supports synchronization between configuration
>>>   packet and data packet.
>>> - Introduces a flexibility to receive a hardware response for a given command
>>>   packet.
>>> - Native hardware support of LAST flag which is mandatory to align with port
>>>   reconfiguration and DRAIN sequence as per V4L guidelines.
>>> - Native hardware support for drain sequence.
>>
>> 1. We considered enhancing the venus driver to support iris functionality but
>> concluded that the result would essentially be two parallel drivers implemented
>> in the same folder.
>> 2. Although the underlying hardware for venus and iris are quite similar, but
>> there are other factors which brings the need of new driver:
>>    a. the host firmware interface (HFI) changed between the two. Venus supports
>> HFI protocol 1.0 while iris supports HFI protocol 2.0.
>>    b. unlike HFI protocol 1.0, HFI protocol 2.0 is better aligned to V4L2 APIs.
>>    c. iris driver modularize platforms, hardware variants, and states to extend
>> it for any upcoming SOC. Thereby more extendable to newer SOCs in future.
>>    d. Iris also supports many advanced features.
>> 3. Based on the comments received on posted iris driver [1], we evaluated it
>> further and to better align with the upstream standard and practices, we
>> acknowledge that even though iris driver is the way forward, it would be ideal
>> to bring in the Venus hardwares enabled in this driver.
>> 4. Hence, we decided to rework iris driver to add support of HFI protocol 1.0 as
>> well.
>> 5. Initially we would start with adding support for one HFI protocol 1.0 based
>> platform which would be SM8250.
>> 6. SM8250 enablement on iris driver would be incremental, starting with basic
>> decode for H264 codec.
>> 7. In long-term, all venus supported platforms would be migrated to iris.
>> 8. Iris driver and venus driver will co-exist till remaining supported targets
>> also gets migrated to iris driver.
>> 9. We would continue to support and maintain venus driver during this phased out
>> approach.
>>
>> Please share your thoughts on the above proposal.
> 
> I think this is a reasonable approach: the venus driver is quite old and it was
> created when we were at more-or-less the same time also developing better codec
> frameworks. So it is not quite up-to-date with all the latest requirements.
> 
> Starting with a clean slate for the iris driver and then add support for venus
> platforms to the iris driver makes sense.
Appreciate your time to review the proposal.
> 
> Just one serious concern: who will do the venus platform migration? Are there resources
> available to do that work? Or is this just wishful thinking?
To initiate the venus platform migration, iris driver would be enabled with all
SOCs under HFI_V6XX which are currently supported in venus driver. In doing so,
iris driver, posted earlier [1] is being reworked to have cleaner abstraction to
invoke HFI 1.0 protocol (venus variants) and would be applicable for all venus
platforms. With this, remaining platform migration would be done with some
incremental efforts (platform specific handling).
We would like to get help from community and co-work in enabling the migration
for remaining venus platforms in a phased out approach.

Regards,
Vikash

[1]
https://patchwork.kernel.org/project/linux-media/cover/1702899149-21321-1-git-send-email-quic_dikshita@quicinc.com/#25643473
Hyunjun Ko April 12, 2024, 7:13 a.m. UTC | #19
Hi,

I'm trying this series of patches for enabling /dev/video0 on sm8650 hdk but failed.
After modprobing, lsmod says just like the follwoing:

root@hdk8650:/lib/modules/6.7.0-rc3+# lsmod
Module                  Size  Used by
iris                  110592  -2
v4l2_mem2mem           20480  -2
videobuf2_memops       12288  -2
videobuf2_v4l2         20480  -2
videobuf2_common       45056  -2
videodev              176128  -2


This series looks for sm8550 device though, my question is that this series have been tested on the device (sm8650 hdk)? or do you expect this should work on it?
Bryan O'Donoghue April 12, 2024, 1:52 p.m. UTC | #20
On 12/04/2024 08:13, Hyunjun Ko wrote:
> Hi,
> 
> I'm trying this series of patches for enabling /dev/video0 on sm8650 hdk but failed.
> After modprobing, lsmod says just like the follwoing:
> 
> root@hdk8650:/lib/modules/6.7.0-rc3+# lsmod
> Module                  Size  Used by
> iris                  110592  -2
> v4l2_mem2mem           20480  -2
> videobuf2_memops       12288  -2
> videobuf2_v4l2         20480  -2
> videobuf2_common       45056  -2
> videodev              176128  -2
> 
> 
> This series looks for sm8550 device though, my question is that this series have been tested on the device (sm8650 hdk)? or do you expect this should work on it?
> 

Different SoCs so despite how close they look in version numbers, you'd 
expect at a minimum some clock and/or power-domain churn - even if there 
is a 1:1 mapping in register numbers and offsets.

We wouldn't ordinarily expect to be able to be able to move SoC versions 
so easily - 8550 and 8650 have similar SoC version numbers but, this is 
not necessarily an indicator of silicon IP block version reuse.

---
bod
Hyunjun Ko May 16, 2024, 7:57 a.m. UTC | #21
Hi,

Thanks for this series of patches. I successfully adjusted these patches and tried to test video features with gstreamer or ffmpeg.
But I found this provides staetful interfaces while I need stateless, which might cause an issue for my side..

My question is do you have any plan to implement stateless interfaces or already you have somewhere?
Vikash Garodia May 16, 2024, 8:06 a.m. UTC | #22
Hi,

On 5/16/2024 1:27 PM, Hyunjun Ko wrote:
> Hi,
> 
> Thanks for this series of patches. I successfully adjusted these patches and tried to test video features with gstreamer or ffmpeg.
> But I found this provides staetful interfaces while I need stateless, which might cause an issue for my side..
> 
> My question is do you have any plan to implement stateless interfaces or already you have somewhere?
There is no plan to implement stateless interfaces.

Regards,
Vikash