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cfag12864b.h
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1 /*
2  * Filename: cfag12864b.h
3  * Version: 0.1.0
4  * Description: cfag12864b LCD driver header
5  * License: GPLv2
6  *
7  * Author: Copyright (C) Miguel Ojeda Sandonis
8  * Date: 2006-10-12
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22  *
23  */
24 
25 #ifndef _CFAG12864B_H_
26 #define _CFAG12864B_H_
27 
28 #define CFAG12864B_WIDTH (128)
29 #define CFAG12864B_HEIGHT (64)
30 #define CFAG12864B_CONTROLLERS (2)
31 #define CFAG12864B_PAGES (8)
32 #define CFAG12864B_ADDRESSES (64)
33 #define CFAG12864B_SIZE ((CFAG12864B_CONTROLLERS) * \
34  (CFAG12864B_PAGES) * \
35  (CFAG12864B_ADDRESSES))
36 
37 /*
38  * The driver will blit this buffer to the LCD
39  *
40  * Its size is CFAG12864B_SIZE.
41  */
42 extern unsigned char * cfag12864b_buffer;
43 
44 /*
45  * Get the refresh rate of the LCD
46  *
47  * Returns the refresh rate (hertz).
48  */
49 extern unsigned int cfag12864b_getrate(void);
50 
51 /*
52  * Enable refreshing
53  *
54  * Returns 0 if successful (anyone was using it),
55  * or != 0 if failed (someone is using it).
56  */
57 extern unsigned char cfag12864b_enable(void);
58 
59 /*
60  * Disable refreshing
61  *
62  * You should call this only when you finish using the LCD.
63  */
64 extern void cfag12864b_disable(void);
65 
66 /*
67  * Is enabled refreshing? (is anyone using the module?)
68  *
69  * Returns 0 if refreshing is not enabled (anyone is using it),
70  * or != 0 if refreshing is enabled (someone is using it).
71  *
72  * Useful for buffer read-only modules.
73  */
74 extern unsigned char cfag12864b_isenabled(void);
75 
76 /*
77  * Is the module inited?
78  */
79 extern unsigned char cfag12864b_isinited(void);
80 
81 #endif /* _CFAG12864B_H_ */
82