Re: [PATCH v1 0/2] media: pci: AVMatrix HWS capture driver

Ben Hoff
2026-03-18T00:23:33Z

Hi Hans,

Thanks for the reminder!

I’ve now posted v2 here:
https://lore.kernel.org/linux-media/20260318001056.465071-1-hoff.benjamin.k@gmail.com/T/#u

This addresses the issues you called out from the media CI run.

Thanks,
Ben

On Tue, Mar 17, 2026 at 12:01 PM Hans Verkuil <hverkuil+cisco@kernel.org> wrote:
>
> On 09/02/2026 13:53, Hans Verkuil wrote:
> > Hi Ben,
> >
> > I ran the patches through our media CI and I got a number of failures:
> >
> > https://linux-media.pages.freedesktop.org/-/users/hverkuil/-/jobs/92826923/artifacts/report.htm
> >
> > Looking at it it is mostly missing 'static' for several functions, and
> > some unused variables.
> >
> > Can you take a look at these issues and post a v2?
>
> Ping?
>
> Regards,
>
> Hans
>
> >
> > Thank you!
> >
> > Regards,
> >
> > Hans
> >
> >
> > On 09/02/2026 12:47, Hans Verkuil wrote:
> >> On 08/02/2026 01:35, Ben Hoff wrote:
> >>> Hi all,
> >>>
> >>> Just following up on this new driver patch sent Jan 11.
> >>>
> >>> Happy to address review comments or adjust the approach if needed.
> >>>
> >>> I’m happy to maintain this driver going forward.
> >>
> >> It got lost in the flood of patches. Thank you for reminding me.
> >>
> >> I've delegated it to myself in patchwork, so I hope I'll have a review
> >> for you with two weeks tops. Ping me if you didn't hear from me after
> >> two weeks.
> >>
> >> Regards,
> >>
> >> Hans
> >>
> >>>
> >>> Thanks,
> >>> Ben
> >>>
> >>> On Sun, Jan 11, 2026 at 9:24 PM Ben Hoff <hoff.benjamin.k@gmail.com> wrote:
> >>>>
> >>>> Hi all,
> >>>>
> >>>> This series introduces an in-tree AVMatrix HWS PCIe capture driver.
> >>>> The driver supports up to four HDMI inputs and exposes the video capture
> >>>> path through V4L2. Audio support is intentionally omitted in this
> >>>> revision so the series can focus on the video pipeline and PCIe glue.
> >>>>
> >>>> Major pieces include:
> >>>> - PCI glue with capability discovery, BAR setup, interrupt handling,
> >>>> and power-management hooks.
> >>>> - A vb2-dma-contig based capture pipeline with DV timings support,
> >>>> per-channel controls, two-buffer management, and loss-of-signal
> >>>> recovery.
> >>>>
> >>>> The baseline GPL out-of-tree driver is available at:
> >>>> https://github.com/benhoff/hws/tree/baseline
> >>>> A vendor driver bundle is available at:
> >>>> https://www.acasis.com/pages/acasis-product-drivers
> >>>> The vendor is not involved in this upstreaming effort.
> >>>>
> >>>> Prior RFC posting: https://lore.kernel.org/lkml/20251027195638.481129-1-hoff.benjamin.k@gmail.com/
> >>>>
> >>>> Current status / open items:
> >>>> - `v4l2-compliance` passes for each video node, and I have exercised
> >>>> basic capture in OBS and run this driver in a steady state mode
> >>>> daily
> >>>>
> >>>> v4l2-compliance (from v4l-utils git, v4l2-compliance 1.32.0):
> >>>> v4l2-compliance 1.32.0, 64 bits, 64-bit time_t
> >>>>
> >>>> Compliance test for HwsCapture device /dev/video1:
> >>>>
> >>>> Driver Info:
> >>>> Driver name : HwsCapture
> >>>> Card type : AVMatrix HWS Capture 2
> >>>> Bus info : PCI:0000:17:00.0
> >>>> Driver version : 6.18.3
> >>>> Capabilities : 0x84200001
> >>>> Video Capture
> >>>> Streaming
> >>>> Extended Pix Format
> >>>> Device Capabilities
> >>>> Device Caps : 0x04200001
> >>>> Video Capture
> >>>> Streaming
> >>>> Extended Pix Format
> >>>>
> >>>> Required ioctls:
> >>>> test VIDIOC_QUERYCAP: OK
> >>>> test invalid ioctls: OK
> >>>>
> >>>> Allow for multiple opens:
> >>>> test second /dev/video1 open: OK
> >>>> test VIDIOC_QUERYCAP: OK
> >>>> test VIDIOC_G/S_PRIORITY: OK
> >>>> test for unlimited opens: OK
> >>>>
> >>>> Debug ioctls:
> >>>> test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
> >>>> test VIDIOC_LOG_STATUS: OK
> >>>>
> >>>> 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
> >>>> test VIDIOC_G/S_AUDIO: OK (Not Supported)
> >>>> Inputs: 1 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
> >>>> test VIDIOC_DV_TIMINGS_CAP: OK
> >>>> test VIDIOC_G/S_EDID: OK (Not Supported)
> >>>>
> >>>> Control ioctls (Input 0):
> >>>> info: checking v4l2_query_ext_ctrl of control 'User Controls' (0x00980001)
> >>>> info: checking v4l2_query_ext_ctrl of control 'Brightness' (0x00980900)
> >>>> info: checking v4l2_query_ext_ctrl of control 'Contrast' (0x00980901)
> >>>> info: checking v4l2_query_ext_ctrl of control 'Saturation' (0x00980902)
> >>>> info: checking v4l2_query_ext_ctrl of control 'Hue' (0x00980903)
> >>>> info: checking v4l2_query_ext_ctrl of control 'Brightness' (0x00980900)
> >>>> info: checking v4l2_query_ext_ctrl of control 'Contrast' (0x00980901)
> >>>> info: checking v4l2_query_ext_ctrl of control 'Saturation' (0x00980902)
> >>>> info: checking v4l2_query_ext_ctrl of control 'Hue' (0x00980903)
> >>>> test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> >>>> test VIDIOC_QUERYCTRL: OK
> >>>> info: checking control 'User Controls' (0x00980001)
> >>>> info: checking control 'Brightness' (0x00980900)
> >>>> info: checking control 'Contrast' (0x00980901)
> >>>> info: checking control 'Saturation' (0x00980902)
> >>>> info: checking control 'Hue' (0x00980903)
> >>>> test VIDIOC_G/S_CTRL: OK
> >>>> info: checking extended control 'User Controls' (0x00980001)
> >>>> info: checking extended control 'Brightness' (0x00980900)
> >>>> info: checking extended control 'Contrast' (0x00980901)
> >>>> info: checking extended control 'Saturation' (0x00980902)
> >>>> info: checking extended control 'Hue' (0x00980903)
> >>>> test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> >>>> info: checking control event 'User Controls' (0x00980001)
> >>>> info: checking control event 'Brightness' (0x00980900)
> >>>> info: checking control event 'Contrast' (0x00980901)
> >>>> info: checking control event 'Saturation' (0x00980902)
> >>>> info: checking control event 'Hue' (0x00980903)
> >>>> warn: v4l2-test-controls.cpp(1159): V4L2_CID_DV_RX_POWER_PRESENT not found for input 0
> >>>> test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> >>>> test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> >>>> Standard Controls: 5 Private Controls: 0
> >>>>
> >>>> Format ioctls (Input 0):
> >>>> info: found 1 formats for buftype 1
> >>>> test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> >>>> warn: v4l2-test-formats.cpp(1485): S_PARM is supported for buftype 1, but not for ENUM_FRAMEINTERVALS
> >>>> 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 (Not Supported)
> >>>> test Composing: OK (Not Supported)
> >>>> test Scaling: OK
> >>>>
> >>>> Codec ioctls (Input 0):
> >>>> test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> >>>> test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> >>>> test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> >>>>
> >>>> Buffer ioctls (Input 0):
> >>>> info: test buftype Video Capture
> >>>> test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> >>>> test CREATE_BUFS maximum buffers: OK
> >>>> test VIDIOC_REMOVE_BUFS: OK
> >>>> test VIDIOC_EXPBUF: OK
> >>>> test Requests: OK (Not Supported)
> >>>> test blocking wait: OK
> >>>>
> >>>> Test input 0:
> >>>>
> >>>> Stream using all formats:
> >>>> test MMAP for Format YUYV, Frame Size 640x480:
> >>>> Stride 1280, Field None: OK
> >>>> Stride 1344, Field None: OK
> >>>> test MMAP for Format YUYV, Frame Size 1920x1080:
> >>>> Stride 3840, Field None: OK
> >>>> Total for HwsCapture device /dev/video1: 51, Succeeded: 51, Failed: 0, Warnings: 2
> >>>>
> >>>>
> >>>> Thanks for taking a look!
> >>>>
> >>>> Ben
> >>>>
> >>>> Ben Hoff (2):
> >>>> media: pci: add AVMatrix HWS capture driver
> >>>> MAINTAINERS: add entry for AVMatrix HWS driver
> >>>>
> >>>> MAINTAINERS | 6 +
> >>>> drivers/media/pci/Kconfig | 1 +
> >>>> drivers/media/pci/Makefile | 1 +
> >>>> drivers/media/pci/hws/Kconfig | 12 +
> >>>> drivers/media/pci/hws/Makefile | 4 +
> >>>> drivers/media/pci/hws/hws.h | 175 +++
> >>>> drivers/media/pci/hws/hws_irq.c | 268 ++++
> >>>> drivers/media/pci/hws/hws_irq.h | 10 +
> >>>> drivers/media/pci/hws/hws_pci.c | 722 +++++++++++
> >>>> drivers/media/pci/hws/hws_reg.h | 144 +++
> >>>> drivers/media/pci/hws/hws_v4l2_ioctl.c | 755 ++++++++++++
> >>>> drivers/media/pci/hws/hws_v4l2_ioctl.h | 38 +
> >>>> drivers/media/pci/hws/hws_video.c | 1542 ++++++++++++++++++++++++
> >>>> drivers/media/pci/hws/hws_video.h | 29 +
> >>>> 14 files changed, 3707 insertions(+)
> >>>> create mode 100644 drivers/media/pci/hws/Kconfig
> >>>> create mode 100644 drivers/media/pci/hws/Makefile
> >>>> create mode 100644 drivers/media/pci/hws/hws.h
> >>>> create mode 100644 drivers/media/pci/hws/hws_irq.c
> >>>> create mode 100644 drivers/media/pci/hws/hws_irq.h
> >>>> create mode 100644 drivers/media/pci/hws/hws_pci.c
> >>>> create mode 100644 drivers/media/pci/hws/hws_reg.h
> >>>> create mode 100644 drivers/media/pci/hws/hws_v4l2_ioctl.c
> >>>> create mode 100644 drivers/media/pci/hws/hws_v4l2_ioctl.h
> >>>> create mode 100644 drivers/media/pci/hws/hws_video.c
> >>>> create mode 100644 drivers/media/pci/hws/hws_video.h
> >>>>
> >>>> --
> >>>> 2.51.0
> >>>
> >>
> >>
> >
> >
>