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10ac310605
These were previously duplicated between multiple keyboard_scan.c and board.c files, and there were a bunch of different constants #defined to be 13. BUG=chrome-os-partner:18360 BRANCH=none TEST=compile all boards; test keyboard on spring and link Change-Id: I91bf9d56d2a56ff25ff307ff10883ca87b6937e5 Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/46165
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/*
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* 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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/* Keyboard scanner test module for Chrome EC */
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#ifndef __CROS_EC_KEYBOARD_TEST_H
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#define __CROS_EC_KEYBOARD_TEST_H
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#include <timer.h>
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/*
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* Keyboard scan test item - contains a single scan to 'present' to key scan
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* logic.
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*/
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struct keyscan_item {
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timestamp_t abs_time; /* absolute timestamp to present this item */
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uint32_t time_us; /* time for this item relative to test start */
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uint8_t done; /* 1 if we managed to present this */
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uint8_t scan[KEYBOARD_COLS];
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};
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/**
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* Get the next key scan from the test sequence, if any
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*
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* @param column Column to read (-1 to OR all columns together
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* @param scan Raw scan data read from GPIOs
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* @return test scan, or just 'scan' if no test is active
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*/
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uint8_t keyscan_seq_get_scan(int column, uint8_t scan);
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/**
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* Calculate the delay until the next key scan event needs to be presented
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*
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* @return number of microseconds from now until the next key scan event, or
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* -1 if there is no future key scan event (e.g. testing is complete)
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*/
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int keyscan_seq_next_event_delay(void);
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#endif
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