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>
diff --git a/kernel/power/Makefile b/kernel/power/Makefile
index 0d1c5e4..493f19d 100644
--- a/kernel/power/Makefile
+++ b/kernel/power/Makefile
@@ -12,5 +12,6 @@
obj-$(CONFIG_USER_WAKELOCK) += userwakelock.o
obj-$(CONFIG_EARLYSUSPEND) += earlysuspend.o
obj-$(CONFIG_CONSOLE_EARLYSUSPEND) += consoleearlysuspend.o
+obj-$(CONFIG_FB_EARLYSUSPEND) += fbearlysuspend.o
obj-$(CONFIG_MAGIC_SYSRQ) += poweroff.o