PM: earlysuspend: Removing dependence on console.
authorRebecca Schultz <rschultz@google.com>
Fri, 18 Jul 2008 01:14:55 +0000 (18:14 -0700)
committerDan Willemsen <dwillemsen@nvidia.com>
Thu, 1 Dec 2011 05:37:53 +0000 (21:37 -0800)
commit8d0aa9f0bbb71790756d60c2a4550f7428ee7869
treecae304cd6f4989dafcbe188bdd8c36f16b0572c8
parent1c26813171af15585f50070dc158bba056d1cf2c
PM: earlysuspend: Removing dependence on console.

Rather than signaling a full update of the display from userspace via a
console switch, this patch introduces 2 files int /sys/power,
wait_for_fb_sleep and wait_for_fb_wake.  Reading these files will block
until the requested state has been entered.  When a read from
wait_for_fb_sleep returns userspace should stop drawing.  When
wait_for_fb_wake returns, it should do a full update.  If either are called
when the fb driver is already in the requested state, they will return
immediately.

Signed-off-by: Rebecca Schultz <rschultz@google.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
kernel/power/Kconfig
kernel/power/Makefile
kernel/power/fbearlysuspend.c [new file with mode: 0644]