mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2025-12-28 02:35:28 +00:00
1de5ac02ec
Holding the power button is currently the best known way to bring the AP back to a state where it is shutdown and not powered. BUG=chrome-os-partner:40826, chrome-os-partner:40677 TEST=Run `apshutdown` on glados, verify that power state machine transitions to G3 after several seconds. Run `powerbtn`, verify that state machine transitions back to S0. BRANCH=None Change-Id: Ia799c5f199127f31bd24907b93946c6289d381f8 Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/275060 Reviewed-by: Aaron Durbin <adurbin@chromium.org>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/* 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);
|
|
|
|
/**
|
|
* Wait for the power button to be released
|
|
*
|
|
* @param timeout_us Timeout in microseconds, or -1 to wait forever
|
|
* @return EC_SUCCESS if ok, or
|
|
* EC_ERROR_TIMEOUT if power button failed to release
|
|
*/
|
|
int power_button_wait_for_release(unsigned int timeout_us);
|
|
|
|
/**
|
|
* Return non-zero if power button signal asserted at hardware input.
|
|
*
|
|
*/
|
|
int power_button_signal_asserted(void);
|
|
|
|
/**
|
|
* Interrupt handler for power button.
|
|
*
|
|
* @param signal Signal which triggered the interrupt.
|
|
*/
|
|
void power_button_interrupt(enum gpio_signal signal);
|
|
|
|
/**
|
|
* For x86 systems, force-assert the power button signal to the PCH.
|
|
*/
|
|
void power_button_pch_press(void);
|
|
|
|
/**
|
|
* For x86 systems, force-deassert the power button signal to the PCH.
|
|
*/
|
|
void power_button_pch_release(void);
|
|
|
|
/**
|
|
* For x86 systems, force a pulse of the power button signal to the PCH.
|
|
*/
|
|
void power_button_pch_pulse(void);
|
|
|
|
#endif /* __CROS_EC_POWER_BUTTON_H */
|