1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* The functions implemented by keyboard component of EC core.
*/
#ifndef __INCLUDE_KEYBOARD_H
#define __INCLUDE_KEYBOARD_H
#include "common.h"
/***************************************************************************/
/* Functions exported by common/keyboard.c.
*/
#define MAX_SCAN_CODE_LEN 4
enum scancode_set_list {
SCANCODE_GET_SET = 0,
SCANCODE_SET_1,
SCANCODE_SET_2,
SCANCODE_SET_3,
SCANCODE_MAX = SCANCODE_SET_3,
};
/* The initialize code of keyboard lib. Called by core main. */
enum ec_error_list keyboard_init(void);
/* Called by keyboard scan code once any key state change (after de-bounce),
*
* This function will look up matrix table and convert scancode host.
*/
void keyboard_state_changed(int row, int col, int is_pressed);
/* Handle the port 0x60 writes from host.
*
* This functions returns the number of bytes stored in *output buffer.
*/
int handle_keyboard_data(uint8_t data, uint8_t *output);
/* Handle the port 0x64 writes from host.
*
* This functions returns the number of bytes stored in *output buffer.
* BUT theose bytes will appear at port 0x60.
*/
int handle_keyboard_command(uint8_t command, uint8_t *output);
/* Send make/break code of power button to host.
*/
void keyboard_set_power_button(int pressed);
/* Register the board-specific keyboard matrix translation function.
* The callback function accepts col/row and returns the scan code.
*
* Note that *scan_code must be at least 4 bytes long to store maximum
* possible sequence.
*/
typedef enum ec_error_list (*keyboard_matrix_callback)(
int8_t row, int8_t col, int8_t pressed,
enum scancode_set_list code_set, uint8_t *scan_code, int32_t* len);
enum ec_error_list keyboard_matrix_register_callback(
int8_t row_num, int8_t col_num,
keyboard_matrix_callback callback);
/***************************************************************************/
/* Below is the interface with the underlying chip-dependent code.
*/
#define MAX_KEYBOARD_MATRIX_ROWS 8
#define MAX_KEYBOARD_MATRIX_COLS 16
typedef void (*keyboard_callback)(int row, int col, int is_pressed);
/* Registers a callback function to underlayer EC lib. So that any key state
* change would notify the upper EC main code.
*
* Note that passing NULL removes any previously registered callback.
*/
enum ec_error_list keyboard_register_callback(keyboard_callback cb);
/* Asks the underlayer EC lib what keys are pressed right now.
*
* Sets bit_array to a debounced array of which keys are currently pressed,
* where a 1-bit means the key is pressed. For example, if only row=2 col=3
* is pressed, it would set bit_array to {0, 0, 0x08, 0, ...}
*
* bit_array must be at least MAX_KEYBOARD_MATRIX_COLS bytes long.
*/
enum ec_error_list keyboard_get_state(uint8_t *bit_array);
/* Return true if the TOH is still set */
extern int keyboard_has_char(void);
extern void keyboard_put_char(uint8_t chr, int send_irq);
#endif /* __INCLUDE_KEYBOARD_H */
|
