gpioiic(4), I2C bus over GPIO bit-banging

To: tech-kern%NetBSD.org@localhost
Subject: gpioiic(4), I2C bus over GPIO bit-banging
From: Marc Balmer <marc%msys.ch@localhost>
Date: Sat, 8 Aug 2009 12:37:15 +0200

The gpioiic(4) driver allows to attach I2C busses using GPIO bit-banging. Ported from OpenBSD.

Please note that a gpioiic(4) driver, once attached to gpio(4) device,can not be detached because the child device, the iic bus, can not betdetached (if possible I will change that).

The diff is also available online at http://www.netbsd.org/~mbalmer/diffs/gpioiic_01.diff

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