From: Ben Skeggs Date: Wed, 21 Dec 2011 08:09:12 +0000 (+1000) Subject: drm/nouveau/i2c: handle bit-banging ourselves X-Git-Tag: v3.3-rc1~121^2~51^2~17 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f553b79c03f0dbd52f6f03abe8233a2bef8cbd0d;p=pandora-kernel.git drm/nouveau/i2c: handle bit-banging ourselves i2c-algo-bit doesn't actually work very well on one card I have access to (NVS 300), random single-bit errors occur most of the time - what we're doing now is closer to what xf86i2c.c does. The original plan was to figure out why i2c-algo-bit fails on the NVS 300, and fix it. However, while investigating I discovered i2c-algo-bit calls cond_resched(), which makes it a bad idea for us to be using as we execute VBIOS scripts from a tasklet, and there may very well be i2c transfers as a result. So, since I already wrote this code in userspace to track down the NVS 300 bug, and it's not really much code - lets use it. Signed-off-by: Ben Skeggs --- Reading git-diff-tree failed