LXR linux/include/linux/cfag12864b.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 *    Filename: cfag12864b.h
   4 *     Version: 0.1.0
   5 * Description: cfag12864b LCD driver header
   6 *
   7 *      Author: Copyright (C) Miguel Ojeda Sandonis
   8 *        Date: 2006-10-12
   9 */
  10
  11#ifndef _CFAG12864B_H_
  12#define _CFAG12864B_H_
  13
  14#define CFAG12864B_WIDTH        (128)
  15#define CFAG12864B_HEIGHT       (64)
  16#define CFAG12864B_CONTROLLERS  (2)
  17#define CFAG12864B_PAGES        (8)
  18#define CFAG12864B_ADDRESSES    (64)
  19#define CFAG12864B_SIZE         ((CFAG12864B_CONTROLLERS) * \
  20                                (CFAG12864B_PAGES) * \
  21                                (CFAG12864B_ADDRESSES))
  22
  23/*
  24 * The driver will blit this buffer to the LCD
  25 *
  26 * Its size is CFAG12864B_SIZE.
  27 */
  28extern unsigned char * cfag12864b_buffer;
  29
  30/*
  31 * Get the refresh rate of the LCD
  32 *
  33 * Returns the refresh rate (hertz).
  34 */
  35extern unsigned int cfag12864b_getrate(void);
  36
  37/*
  38 * Enable refreshing
  39 *
  40 * Returns 0 if successful (anyone was using it),
  41 * or != 0 if failed (someone is using it).
  42 */
  43extern unsigned char cfag12864b_enable(void);
  44
  45/*
  46 * Disable refreshing
  47 *
  48 * You should call this only when you finish using the LCD.
  49 */
  50extern void cfag12864b_disable(void);
  51
  52/*
  53 * Is enabled refreshing? (is anyone using the module?)
  54 *
  55 * Returns 0 if refreshing is not enabled (anyone is using it),
  56 * or != 0 if refreshing is enabled (someone is using it).
  57 *
  58 * Useful for buffer read-only modules.
  59 */
  60extern unsigned char cfag12864b_isenabled(void);
  61
  62/*
  63 * Is the module inited?
  64 */
  65extern unsigned char cfag12864b_isinited(void);
  66
  67#endif /* _CFAG12864B_H_ */
  68
  69