From: Martin Tůma <[email protected]>
Hi,
This patch adds a driver for the Digiteq Automotive MGB4 grabber card.
MGB4 is a modular frame grabber PCIe card for automotive video interfaces
(FPD-Link and GMSL for now). It is based on a Xilinx FPGA and uses their
XDMA IP core for DMA transfers. Additionally, Xilinx I2C and SPI IP cores
which already have drivers in linux are used in the design.
The driver is a quite standard v4l2 driver, with one exception - there are
a lot of sysfs options that may/must be set before opening the v4l2 device
to adapt the card on a specific signal (see mgb4.rst for details)
as the card must be able to work with various signal sources (or displays)
that can not be auto-detected.
I have run the driver through the v4l2-compliance test suite for both the
input and the output and the results look fine to me (I can provide the
output if required).
Changes in v6:
* Rebased to current master that includes the Xilinx XDMA driver.
Changes in v5:
* Removed unused <linux/version.h> includes
Changes in v4:
* Redesigned the signal change handling logic. Now using the propper timings
API in the video input driver and a propper open() syscall check/logic in
the video output driver.
* Fixed all minor issues from v3 review.
* 'checkpatch.pl --strict' used for checking the code.
Changes in v3:
* Rebased the DMA transfers part to use the new XDMA driver from Xilinx/AMD
Changes in v2:
* Completely rewritten the original Xilinx's XDMA driver to meet kernel code
standards.
* Added all required "to" and "cc" mail addresses.
Martin Tůma (1):
Added Digiteq Automotive MGB4 driver
Documentation/admin-guide/media/mgb4.rst | 352 ++++++++
.../admin-guide/media/pci-cardlist.rst | 1 +
.../admin-guide/media/v4l-drivers.rst | 1 +
MAINTAINERS | 7 +
drivers/media/pci/Kconfig | 1 +
drivers/media/pci/Makefile | 1 +
drivers/media/pci/mgb4/Kconfig | 17 +
drivers/media/pci/mgb4/Makefile | 6 +
drivers/media/pci/mgb4/mgb4_cmt.c | 247 ++++++
drivers/media/pci/mgb4/mgb4_cmt.h | 16 +
drivers/media/pci/mgb4/mgb4_core.c | 641 ++++++++++++++
drivers/media/pci/mgb4/mgb4_core.h | 65 ++
drivers/media/pci/mgb4/mgb4_dma.c | 123 +++
drivers/media/pci/mgb4/mgb4_dma.h | 18 +
drivers/media/pci/mgb4/mgb4_i2c.c | 140 +++
drivers/media/pci/mgb4/mgb4_i2c.h | 35 +
drivers/media/pci/mgb4/mgb4_io.h | 39 +
drivers/media/pci/mgb4/mgb4_regs.c | 30 +
drivers/media/pci/mgb4/mgb4_regs.h | 35 +
drivers/media/pci/mgb4/mgb4_sysfs.h | 18 +
drivers/media/pci/mgb4/mgb4_sysfs_in.c | 780 ++++++++++++++++
drivers/media/pci/mgb4/mgb4_sysfs_out.c | 732 +++++++++++++++
drivers/media/pci/mgb4/mgb4_sysfs_pci.c | 86 ++
drivers/media/pci/mgb4/mgb4_trigger.c | 208 +++++
drivers/media/pci/mgb4/mgb4_trigger.h | 8 +
drivers/media/pci/mgb4/mgb4_vin.c | 830 ++++++++++++++++++
drivers/media/pci/mgb4/mgb4_vin.h | 63 ++
drivers/media/pci/mgb4/mgb4_vout.c | 501 +++++++++++
drivers/media/pci/mgb4/mgb4_vout.h | 58 ++
29 files changed, 5059 insertions(+)
create mode 100644 Documentation/admin-guide/media/mgb4.rst
create mode 100644 drivers/media/pci/mgb4/Kconfig
create mode 100644 drivers/media/pci/mgb4/Makefile
create mode 100644 drivers/media/pci/mgb4/mgb4_cmt.c
create mode 100644 drivers/media/pci/mgb4/mgb4_cmt.h
create mode 100644 drivers/media/pci/mgb4/mgb4_core.c
create mode 100644 drivers/media/pci/mgb4/mgb4_core.h
create mode 100644 drivers/media/pci/mgb4/mgb4_dma.c
create mode 100644 drivers/media/pci/mgb4/mgb4_dma.h
create mode 100644 drivers/media/pci/mgb4/mgb4_i2c.c
create mode 100644 drivers/media/pci/mgb4/mgb4_i2c.h
create mode 100644 drivers/media/pci/mgb4/mgb4_io.h
create mode 100644 drivers/media/pci/mgb4/mgb4_regs.c
create mode 100644 drivers/media/pci/mgb4/mgb4_regs.h
create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs.h
create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_in.c
create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_out.c
create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_pci.c
create mode 100644 drivers/media/pci/mgb4/mgb4_trigger.c
create mode 100644 drivers/media/pci/mgb4/mgb4_trigger.h
create mode 100644 drivers/media/pci/mgb4/mgb4_vin.c
create mode 100644 drivers/media/pci/mgb4/mgb4_vin.h
create mode 100644 drivers/media/pci/mgb4/mgb4_vout.c
create mode 100644 drivers/media/pci/mgb4/mgb4_vout.h
base-commit: ae8373a5add4ea39f032563cf12a02946d1e3546
--
2.40.1
Hi Martin,
Thank you for this patch. I've reviewed it, so I'm looking forward to v7.
On 24/05/2023 13:21, [email protected] wrote:
> From: Martin Tůma <[email protected]>
>
> Hi,
> This patch adds a driver for the Digiteq Automotive MGB4 grabber card.
> MGB4 is a modular frame grabber PCIe card for automotive video interfaces
> (FPD-Link and GMSL for now). It is based on a Xilinx FPGA and uses their
> XDMA IP core for DMA transfers. Additionally, Xilinx I2C and SPI IP cores
> which already have drivers in linux are used in the design.
>
> The driver is a quite standard v4l2 driver, with one exception - there are
> a lot of sysfs options that may/must be set before opening the v4l2 device
> to adapt the card on a specific signal (see mgb4.rst for details)
> as the card must be able to work with various signal sources (or displays)
> that can not be auto-detected.
>
> I have run the driver through the v4l2-compliance test suite for both the
> input and the output and the results look fine to me (I can provide the
> output if required).
Yes please! Just include the output in the cover letter next time.
I always like to check it, especially for new drivers.
Regards,
Hans
>
> Changes in v6:
> * Rebased to current master that includes the Xilinx XDMA driver.
>
> Changes in v5:
> * Removed unused <linux/version.h> includes
>
> Changes in v4:
> * Redesigned the signal change handling logic. Now using the propper timings
> API in the video input driver and a propper open() syscall check/logic in
> the video output driver.
> * Fixed all minor issues from v3 review.
> * 'checkpatch.pl --strict' used for checking the code.
>
> Changes in v3:
> * Rebased the DMA transfers part to use the new XDMA driver from Xilinx/AMD
>
> Changes in v2:
> * Completely rewritten the original Xilinx's XDMA driver to meet kernel code
> standards.
> * Added all required "to" and "cc" mail addresses.
>
> Martin Tůma (1):
> Added Digiteq Automotive MGB4 driver
>
> Documentation/admin-guide/media/mgb4.rst | 352 ++++++++
> .../admin-guide/media/pci-cardlist.rst | 1 +
> .../admin-guide/media/v4l-drivers.rst | 1 +
> MAINTAINERS | 7 +
> drivers/media/pci/Kconfig | 1 +
> drivers/media/pci/Makefile | 1 +
> drivers/media/pci/mgb4/Kconfig | 17 +
> drivers/media/pci/mgb4/Makefile | 6 +
> drivers/media/pci/mgb4/mgb4_cmt.c | 247 ++++++
> drivers/media/pci/mgb4/mgb4_cmt.h | 16 +
> drivers/media/pci/mgb4/mgb4_core.c | 641 ++++++++++++++
> drivers/media/pci/mgb4/mgb4_core.h | 65 ++
> drivers/media/pci/mgb4/mgb4_dma.c | 123 +++
> drivers/media/pci/mgb4/mgb4_dma.h | 18 +
> drivers/media/pci/mgb4/mgb4_i2c.c | 140 +++
> drivers/media/pci/mgb4/mgb4_i2c.h | 35 +
> drivers/media/pci/mgb4/mgb4_io.h | 39 +
> drivers/media/pci/mgb4/mgb4_regs.c | 30 +
> drivers/media/pci/mgb4/mgb4_regs.h | 35 +
> drivers/media/pci/mgb4/mgb4_sysfs.h | 18 +
> drivers/media/pci/mgb4/mgb4_sysfs_in.c | 780 ++++++++++++++++
> drivers/media/pci/mgb4/mgb4_sysfs_out.c | 732 +++++++++++++++
> drivers/media/pci/mgb4/mgb4_sysfs_pci.c | 86 ++
> drivers/media/pci/mgb4/mgb4_trigger.c | 208 +++++
> drivers/media/pci/mgb4/mgb4_trigger.h | 8 +
> drivers/media/pci/mgb4/mgb4_vin.c | 830 ++++++++++++++++++
> drivers/media/pci/mgb4/mgb4_vin.h | 63 ++
> drivers/media/pci/mgb4/mgb4_vout.c | 501 +++++++++++
> drivers/media/pci/mgb4/mgb4_vout.h | 58 ++
> 29 files changed, 5059 insertions(+)
> create mode 100644 Documentation/admin-guide/media/mgb4.rst
> create mode 100644 drivers/media/pci/mgb4/Kconfig
> create mode 100644 drivers/media/pci/mgb4/Makefile
> create mode 100644 drivers/media/pci/mgb4/mgb4_cmt.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_cmt.h
> create mode 100644 drivers/media/pci/mgb4/mgb4_core.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_core.h
> create mode 100644 drivers/media/pci/mgb4/mgb4_dma.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_dma.h
> create mode 100644 drivers/media/pci/mgb4/mgb4_i2c.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_i2c.h
> create mode 100644 drivers/media/pci/mgb4/mgb4_io.h
> create mode 100644 drivers/media/pci/mgb4/mgb4_regs.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_regs.h
> create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs.h
> create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_in.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_out.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_pci.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_trigger.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_trigger.h
> create mode 100644 drivers/media/pci/mgb4/mgb4_vin.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_vin.h
> create mode 100644 drivers/media/pci/mgb4/mgb4_vout.c
> create mode 100644 drivers/media/pci/mgb4/mgb4_vout.h
>
>
> base-commit: ae8373a5add4ea39f032563cf12a02946d1e3546