Re: Char Driver for Silicon Labs Si446x Transceivers

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Jul 06, 2021 at 01:17:09PM -0700, Randy Dunlap wrote:
> On 7/5/21 10:10 PM, Greg KH wrote:
> > On Mon, Jul 05, 2021 at 06:09:28PM -0400, Sunip Mukherjee wrote:
> >> Hi,
> >>
> >> I am very new to the kernel community; this is my first message in the
> >> LKML so my apologies if I am doing things wrong.
> >>
> >> I have been using an Si4463 transceiver for UHF communication with a
> >> cubesat I developed. I could not find any code to control the
> >> transceiver on Linux. The closest thing I could find was an AVR
> >> implementation by Zak Kemble
> >> (https://blog.zakkemble.net/si4463-radio-library-avr-arduino/).
> >> I followed the API docs and rewrote the whole thing at first for
> >> userland only (can be found here:
> >> https://github.com/SPACE-HAUC/si446x_linux/releases/tag/v3.1), and
> >> then I decided it would be a great learning opportunity for me to port
> >> it to the kernel.
> >>
> >> The kernel port has gone mostly smoothly. The transceiver communicates
> >> with the host MCU over SPI, and requires a pin for RESET, and another
> >> pin for IRQ.
> >> I have implemented the driver to provide a char device (/dev/si446x#)
> >> to the userland for open, read, write, poll and ioctl.
> >> I had initially set up a pull request for the driver and the device
> >> tree overlay to the Raspberry Pi kernel community. They have agreed to
> >> accept the device tree overlay for the device, however the driver
> >> needs to be included by the Linux Kernel community. I want to use this
> >> opportunity to find some people who have access to a Si446x
> >> transceiver and a Raspberry Pi, so that the code I have can be tested,
> >> and if deemed worthy, included in the kernel tree.
> >>
> >> My code is hosted here: https://github.com/sunipkmukherjee/silabs.git
> >>
> >> Any suggestions/criticisms are welcome.
> > 
> > If you post it in a patch form, as described in our documentation, I
> > will be glad to review it.  Otherwise just looking at a random github
> > repo is quite difficult and provides no way to give proper feedback.
> > 
> > Instructions on how to make a patch and submit it and the proper format
> > for everything can be found in the Documentation/SubmittingPatches file.
> 
> which is now known as Documentation/process/submitting-patches.rst

That's what that file says :)

I should update my bot one of these days to point to the real
location...

thanks,

greg k-h