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93be0c3b0a
This is keyboard test mechanism request for "multiple key press test", we can thru the testing to scan out kso ksi pins shortting or keyboard has multiple key pressing, below was the testing steps: 1. Turn off internal keyboard scan function. 2. Set all scan & sense pins to input and internal push up. 3. Set start one pin to output low. 4. check other pins status if any sense low level. 5. repeat step 3~4 for all keyboard KSO/KSI pins. 6. Turn on internal keyboard scan function. BUG=chrome-os-partner:49235 BRANCH=ToT TEST=manual Short any KSO or KSI pins and excute "ectool kbfactorytest", it shows failed. if no pins short together, it shows passed. Change-Id: Id2c4310d45e892aebc6d2c0795db22eba5a30641 Signed-off-by: Devin Lu <Devin.Lu@quantatw.com> Reviewed-on: https://chromium-review.googlesource.com/332322 Reviewed-by: Shawn N <shawnn@chromium.org>
82 lines
2.1 KiB
C
82 lines
2.1 KiB
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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* Raw access to keyboard GPIOs.
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*
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* The keyboard matrix is read by driving output signals on the column lines
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* and reading the row lines.
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*/
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#ifndef __CROS_EC_KEYBOARD_RAW_H
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#define __CROS_EC_KEYBOARD_RAW_H
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#include "common.h"
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#include "gpio.h"
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/* Column values for keyboard_raw_drive_column() */
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enum keyboard_column_index {
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KEYBOARD_COLUMN_ALL = -2, /* Drive all columns */
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KEYBOARD_COLUMN_NONE = -1, /* Drive no columns (tri-state all) */
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/* 0 ~ KEYBOARD_COLS-1 for the corresponding column */
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};
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/**
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* Initialize the raw keyboard interface.
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*
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* Must be called before any other functions in this interface.
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*/
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void keyboard_raw_init(void);
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/**
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* Finish intitialization after task scheduling has started.
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*
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* Call from the keyboard scan task.
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*/
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void keyboard_raw_task_start(void);
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/**
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* Drive the specified column low.
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*
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* Other columns are tristated. See enum keyboard_column_index for special
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* values for <col>.
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*/
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void keyboard_raw_drive_column(int col);
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/**
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* Read raw row state.
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*
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* Bits are 1 if signal is present, 0 if not present.
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*/
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int keyboard_raw_read_rows(void);
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/**
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* Enable or disable keyboard interrupts.
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*
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* Enabling interrupts will clear any pending interrupt bits. To avoid missing
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* any interrupts that occur between the end of scanning and then, you should
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* call keyboard_raw_read_rows() after this. If it returns non-zero, disable
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* interrupts and go back to polling mode instead of waiting for an interrupt.
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*/
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void keyboard_raw_enable_interrupt(int enable);
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#ifdef HAS_TASK_KEYSCAN
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/**
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* GPIO interrupt for raw keyboard input
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*/
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void keyboard_raw_gpio_interrupt(enum gpio_signal signal);
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#else
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static inline void keyboard_raw_gpio_interrupt(enum gpio_signal signal) { }
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#endif /* !HAS_TASK_KEYSCAN */
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/**
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* Run keyboard factory test scanning.
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*
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* @return non-zero if keyboard pins are shorted.
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*/
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int keyboard_factory_test_scan(void);
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#endif /* __CROS_EC_KEYBOARD_RAW_H */
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