Hi Alan,
On Mon, 5 Nov 2018 12:52:03 -0600
Alan Tull atull@xxxxxxxxxx wrote:
>On Mon, Nov 5, 2018 at 10:19 AM Anatolij Gustschin <agust@xxxxxxx> wrote:
>
>Hi Anatolij,
>
>>
>> This series adds drivers and FPGA manager support required
>> for FT232H based ARRI FPGA configuration adapters.
>
>Is this a repost or a new version of this patchset? If it's a repost,
>you could note that. If there are changes since the previous posting,
>version info helps reviewers know what's new.
This is a new version. Or it is very different compared to my first
attempt to add driver support for this adapter hardware. The initial
series ([1],[2],[3]) didn't include MPSSE SPI driver, it didn't use
vendor specific USB PIDs for FTDI device and had fundamental design
issues. This new version implements the new driver design as summarized
here [4].
Changes in this new version:
- don't use MFD framework
- don't use original FT232H USB PID (it is too generic and collides
with existing ftdi_sio driver)
- don't add separate CBUS GPIO driver based on FT232H MFD device
- redesign/rework the drivers as described under [4]
- add basic FT232H interface driver under drivers/usb/misc/
- use custom reserved USB PIDs in the USB driver for adapter devices
- add notes about borrowed protocol code from libftdi to commit log
and header file
- add MPSSE SPI controller driver supporting USB-SPI bus with
dynamically added SPI slaves from description in platform data
(the initial attempt didn't include USB SPI bus support for PS-
SPI FPGA configuration via USB)
- rework FPP fpga manager driver based on new FT232H interface
driver and extend it according to CPLD changes for additional
support of new hardware revision B.
[1] https://patchwork.kernel.org/patch/9828985/
[2] https://patchwork.kernel.org/patch/9828981/
[3] https://patchwork.kernel.org/patch/9828983/
[4] https://www.spinics.net/lists/linux-usb/msg163441.html
Thanks,
Anatolij
