diff options
author | Randall Spangler <rspangler@chromium.org> | 2013-04-23 17:02:07 -0700 |
---|---|---|
committer | ChromeBot <chrome-bot@google.com> | 2013-04-25 17:03:18 -0700 |
commit | 45bc5c1a2135eaae05978d371cff17fb810b9951 (patch) | |
tree | 38d71db1f356c86e37bbadedd384d000a329dfaf /include/power_button.h | |
parent | b4b2c6ae7026569b21749dab563114f95d4c7396 (diff) | |
download | chrome-ec-45bc5c1a2135eaae05978d371cff17fb810b9951.tar.gz |
Split out power button code from switch.c
The power button code is platform-independent. This change splits the
code out of the LM4 switch.c module so that a subseqent change to
STM32 platforms can start using it.
BUG=chrome-os-partner:18945
BRANCH=none
TEST=manual
1. Power+refresh+esc goes to recovery mode,
2. Press power button at recovery screen turns off.
3. With system off, power button turns system on.
4. Press power button for a second; screen locks.
5. Press power button while typing; blocks keystrokes while it's pressed.
6. Hold power button down for 8 sec; system forced to shutdown.
7. From EC console, with system on:
hostevent clear
hostevent -> event 0x04 is clear
press power button
hostevent -> event 0x04 is set
8. From EC console, with system off:
powerbtn -> system turns on
powerbtn 5000 -> system turns off, just like power button was held for 5 sec
Change-Id: If2a9b02514a201e1d03c857d128e2ccab51a16ef
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49217
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Diffstat (limited to 'include/power_button.h')
-rw-r--r-- | include/power_button.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/power_button.h b/include/power_button.h new file mode 100644 index 0000000000..f3da24da9b --- /dev/null +++ b/include/power_button.h @@ -0,0 +1,27 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* Power button API for Chrome EC */ + +#ifndef __CROS_EC_POWER_BUTTON_H +#define __CROS_EC_POWER_BUTTON_H + +#include "common.h" + +/** + * Return non-zero if power button is pressed. + * + * Uses the debounced button state, not the raw signal from the GPIO. + */ +int power_button_is_pressed(void); + +/** + * Interrupt handler for power button. + * + * @param signal Signal which triggered the interrupt. + */ +void power_button_interrupt(enum gpio_signal signal); + +#endif /* __CROS_EC_POWER_BUTTON_H */ |