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45bc5c1a21
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>
28 lines
666 B
C
28 lines
666 B
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Power button API for Chrome EC */
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#ifndef __CROS_EC_POWER_BUTTON_H
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#define __CROS_EC_POWER_BUTTON_H
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#include "common.h"
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/**
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* Return non-zero if power button is pressed.
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*
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* Uses the debounced button state, not the raw signal from the GPIO.
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*/
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int power_button_is_pressed(void);
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/**
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* Interrupt handler for power button.
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*
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* @param signal Signal which triggered the interrupt.
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*/
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void power_button_interrupt(enum gpio_signal signal);
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#endif /* __CROS_EC_POWER_BUTTON_H */
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