[Pcsclite-muscle] New driver for Myson CS8819

[Corentin FERRY]

Hello Musclers,
I have written a small program to drive Myson CS8819 chips under Linux. 
Those chips are basically SD/MMC/MS/whatever card readers, but they can 
also drive smart cards. Myson provides a Windows program to check and 
backup SIM cards only, under Windows. Linux sees this device as a 
regular card reader, but not as a CCID-compliant device or any PC/SC 
compatible one.

I haven't directly written a program that communicates with the PC/SC 
API as I don't know any of its functions and I just had a couple of days 
to write my code. Instead, I have written a bridge between the Athena 
ASEDrive IIIe Serial driver and the Myson chip, using libusb to 
communicate with the latter, and a virtual serial port for the former.

The code and instructions are available here:
https://github.com/Cocodidou/myson_cs8819

If you're interested in writing a true PC/SC driver for this chip (i.e. 
removing the dependency on the ASEDrive IIIe driver) before I do it 
(whenever I find the time to), or have any advice, any comment, then you 
are welcome.

Cheers,
Corentin FERRY