linux-kernel - Support for Silicon C2 Interface.

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Message-Id: <1223044589-31741-1-git-send-email-giometti@linux.it>
Date:	Fri,  3 Oct 2008 16:36:28 +0200
From:	Rodolfo Giometti <giometti@...ux.it>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>, Greg KH <greg@...ah.com>
Subject: Support for Silicon C2 Interface.

C2 port implements a two wire serial communication protocol (bit
banging) designed to enable in-system programming, debugging, and
boundary-scan testing on low pin-count Silicon Labs devices.

Main references are at Silicon Laboratories site:

* AN127: FLASH Programming via the C2 Interface
     http://www.silabs.com/public/documents/tpub_doc/anote/Microcontrollers/Small_Form_Factor/en/an127.pdf

* C2 Specification
     http://www.silabs.com/public/documents/tpub_doc/spec/Microcontrollers/en/C2spec.pdf

Currently this code supports only flash programming through sysfs
interface but extensions shoud be easy to add.

I know that this (proposal) patch may be incomplete but I'd like to
know what you are thinking about it before continuing further. For example
I'd like to know if should I put the C2 port core here or into proper
subdirectory of linux/drivers/misc/ where clients can be placed also.

Thanks for your suggestions,

Rodolfo

--

 drivers/misc/Kconfig       |   13
 drivers/misc/Makefile      |    1
 drivers/misc/c2port_core.c |  996 +++++++++++++++++++++++++++++++++++++++++++++
 include/linux/c2port.h     |   65 ++
 4 files changed, 1075 insertions(+)

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