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34a97f50d5
Nearly every board had a buttons array defined in which its contents had the standard volume buttons. This commit creates a single common buttons array that can contain the standard volume buttons and recovery buttons. If a board has volume up and down buttons, they can simply define CONFIG_VOLUME_BUTTONS and it will populate the buttons array with the standard definition. The buttons are active low and have a 30 ms debounce period. Similiarly, if a board has a dedicated recovery button, defining CONFIG_DEDICATED_RECOVERY_BUTTON will also populate the buttons array with a recovery button. BUG=chromium:783371 BRANCH=None TEST=make -j buildall. TEST=Flash a device with CONFIG_VOLUME_BUTTONS, verify pressing volume buttons still work. Change-Id: Ie5d63670ca4c6b146ec8ffb64d40ea9ce437b913 Signed-off-by: Aseda Aboagye <aaboagye@google.com> Reviewed-on: https://chromium-review.googlesource.com/773794 Commit-Ready: Aseda Aboagye <aaboagye@chromium.org> Tested-by: Aseda Aboagye <aaboagye@chromium.org> Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org> Reviewed-by: Shawn N <shawnn@chromium.org>
74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/* Copyright (c) 2014 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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/* Button API for Chrome EC */
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#ifndef __CROS_EC_BUTTON_H
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#define __CROS_EC_BUTTON_H
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#include "common.h"
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#include "gpio.h"
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#define BUTTON_FLAG_ACTIVE_HIGH (1 << 0)
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enum keyboard_button_type {
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KEYBOARD_BUTTON_POWER = 0,
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KEYBOARD_BUTTON_VOLUME_DOWN,
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KEYBOARD_BUTTON_VOLUME_UP,
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KEYBOARD_BUTTON_RECOVERY,
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KEYBOARD_BUTTON_CAPSENSE_1,
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KEYBOARD_BUTTON_CAPSENSE_2,
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KEYBOARD_BUTTON_CAPSENSE_3,
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KEYBOARD_BUTTON_CAPSENSE_4,
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KEYBOARD_BUTTON_CAPSENSE_5,
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KEYBOARD_BUTTON_CAPSENSE_6,
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KEYBOARD_BUTTON_CAPSENSE_7,
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KEYBOARD_BUTTON_CAPSENSE_8,
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KEYBOARD_BUTTON_COUNT
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};
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struct button_config {
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const char *name;
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enum keyboard_button_type type;
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enum gpio_signal gpio;
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uint32_t debounce_us;
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int flags;
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};
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enum button {
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#ifdef CONFIG_VOLUME_BUTTONS
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BUTTON_VOLUME_UP,
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BUTTON_VOLUME_DOWN,
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#endif /* defined(CONFIG_VOLUME_BUTTONS) */
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#ifdef CONFIG_DEDICATED_RECOVERY_BUTTON
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BUTTON_RECOVERY,
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#endif /* defined(CONFIG_DEDICATED_RECOVERY_BUTTON) */
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BUTTON_COUNT,
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};
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/* Table of buttons for the board. */
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extern const struct button_config buttons[];
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/*
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* Buttons used to decide whether recovery is requested or not
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*/
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extern const struct button_config *recovery_buttons[];
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extern const int recovery_buttons_count;
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/*
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* Button initialization, called from main.
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*/
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void button_init(void);
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/*
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* Interrupt handler for 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 button_interrupt(enum gpio_signal signal);
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#endif /* __CROS_EC_BUTTON_H */
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