linux/include/linux/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 */
  42extern unsigned char * cfag12864b_buffer;
  43
  44/*
  45 * Get the refresh rate of the LCD
  46 *
  47 * Returns the refresh rate (hertz).
  48 */
  49extern 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 */
  57extern unsigned char cfag12864b_enable(void);
  58
  59/*
  60 * Disable refreshing
  61 *
  62 * You should call this only when you finish using the LCD.
  63 */
  64extern 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 */
  74extern unsigned char cfag12864b_isenabled(void);
  75
  76/*
  77 * Is the module inited?
  78 */
  79extern unsigned char cfag12864b_isinited(void);
  80
  81#endif /* _CFAG12864B_H_ */
  82
  83
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