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https://github.com/Telecominfraproject/OpenCellular.git
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7b155fb8ac
Keyboard scan module now owns the recovery key state on all platforms. And clean up a few comments to linux kernel style BUG=chrome-os-partner:10890 TEST=manual - Power on system. Should boot normally. - Power+Refresh+D. Should turn dev switch on. - Power+Refresh+F. Should turn dev switch off. - Power+Esc. Should reboot system. Power button should power on normally. - Power+Refresh+Esc. Should power on into recovery mode. - Then press power to shut system down. - Power button should power on normally (not back into recovery mode). Change-Id: I4d16e1e8b039efeacbd41e8acec115844bc8457d Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/26147 Reviewed-by: Simon Glass <sjg@chromium.org>
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* Copyright (c) 2012 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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/* Keyboard scanner module for Chrome EC */
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#ifndef __CROS_EC_KEYBOARD_SCAN_H
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#define __CROS_EC_KEYBOARD_SCAN_H
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#include "common.h"
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/* Initializes the module. */
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int keyboard_scan_init(void);
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/* Key held down at keyboard-controlled reset boot time. */
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enum boot_key {
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BOOT_KEY_NONE, /* No keys other than keyboard-controlled reset keys */
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BOOT_KEY_ESC,
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BOOT_KEY_D,
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BOOT_KEY_F,
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BOOT_KEY_DOWN_ARROW,
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BOOT_KEY_OTHER = -1, /* None of the above */
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};
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/*
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* Return the key held down at boot time in addition to the keyboard-controlled
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* reset keys. Returns BOOT_KEY_OTHER if none of the keys specifically checked
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* was pressed, or reset was not caused by a keyboard-controlled reset, or if
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* the state has been cleared by keyboard_scan_clear_boot_key().
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*/
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enum boot_key keyboard_scan_get_boot_key(void);
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/* Clear the boot key state. */
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void keyboard_scan_clear_boot_key(void);
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/* Return non-zero if recovery key was pressed at boot. */
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int keyboard_scan_recovery_pressed(void);
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/* Clear any saved keyboard state (empty FIFO, etc) */
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void keyboard_clear_state(void);
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/* Enables/disables keyboard matrix scan. */
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void keyboard_enable_scanning(int enable);
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#endif /* __CROS_EC_KEYBOARD_SCAN_H */
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