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| author | Rebecca Schultz <rschultz@google.com> | 2008-07-17 18:14:55 -0700 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2011-06-14 09:08:43 -0700 |
| commit | 4b0ea27fc8202b21ce338c82b55eee9c281bd7da (patch) | |
| tree | a4527ae113321bc7a55d316183435ad38ccfabc6 /kernel/power/Kconfig | |
| parent | b28a6a111c2c4779f92f310cfefe10606df4999f (diff) | |
| download | kernel_samsung_espresso10-4b0ea27fc8202b21ce338c82b55eee9c281bd7da.tar.gz kernel_samsung_espresso10-4b0ea27fc8202b21ce338c82b55eee9c281bd7da.tar.bz2 kernel_samsung_espresso10-4b0ea27fc8202b21ce338c82b55eee9c281bd7da.zip | |
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>
Diffstat (limited to 'kernel/power/Kconfig')
| -rw-r--r-- | kernel/power/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 625d65318ed..a70f6c82063 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -61,6 +61,7 @@ config EARLYSUSPEND choice prompt "User-space screen access" + default FB_EARLYSUSPEND if !FRAMEBUFFER_CONSOLE default CONSOLE_EARLYSUSPEND depends on HAS_EARLYSUSPEND @@ -74,6 +75,14 @@ choice Register early suspend handler to perform a console switch to when user-space should stop drawing to the screen and a switch back when it should resume. + + config FB_EARLYSUSPEND + bool "Sysfs interface" + depends on HAS_EARLYSUSPEND + ---help--- + Register early suspend handler that notifies and waits for + user-space through sysfs when user-space should stop drawing + to the screen and notifies user-space when it should resume. endchoice config HIBERNATE_CALLBACKS |