]> err.no Git - linux-2.6/commit
PM/gxfb: add hook to PM console layer that allows disabling of suspend VT switch
authorAndres Salomon <dilinger@queued.net>
Mon, 28 Apr 2008 09:15:03 +0000 (02:15 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 28 Apr 2008 15:58:36 +0000 (08:58 -0700)
commitb6f448e99ce7955b9707ed36a46cab2c6ddf7ddc
tree74ae26692c1fd713a0178faca99dea6761d442e8
parent46fb6f110dfc3fc99f44cf701f66ea3e790b6a81
PM/gxfb: add hook to PM console layer that allows disabling of suspend VT switch

Prior to suspend, we allocate and switch to a new VT; after suspend, we switch
back to the original VT.  This can be slow, and is completely unnecessary if
the framebuffer we're using can restore video properly.

This adds a hook that allows drivers to select whether or not to do this vt
switch, and changes the gxfb driver to call this hook.  It also adds a module
param to gxfb to allow controlling of the vt switch (defaulting to no switch).

(Note: I'm not convinced that console_sem is the best way to protect this, but
we should probably have some form of locking..)

[akpm@linux-foundation.org: build fix]
Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Jordan Crouse <jordan.crouse@amd.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/fb/gxfb.txt
drivers/video/geode/gxfb_core.c
include/linux/suspend.h
kernel/power/console.c