/*
   *    Filename: cfag12864b.h
   *     Version: 0.1.0
   * Description: cfag12864b LCD driver header
   *     License: GPLv2
   *
   *      Author: Copyright (C) Miguel Ojeda Sandonis
   *        Date: 2006-10-12
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License version 2 as
   *  published by the Free Software Foundation.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   *
   */
  
  #ifndef _CFAG12864B_H_
  #define _CFAG12864B_H_
  
  #define CFAG12864B_WIDTH	(128)
  #define CFAG12864B_HEIGHT	(64)
  #define CFAG12864B_CONTROLLERS	(2)
  #define CFAG12864B_PAGES	(8)
  #define CFAG12864B_ADDRESSES	(64)
  #define CFAG12864B_SIZE		((CFAG12864B_CONTROLLERS) * \
  				(CFAG12864B_PAGES) * \
  				(CFAG12864B_ADDRESSES))
  
  /*
   * The driver will blit this buffer to the LCD
   *
   * Its size is CFAG12864B_SIZE.
   */
  extern unsigned char * cfag12864b_buffer;
  
  /*
   * Get the refresh rate of the LCD
   *
   * Returns the refresh rate (hertz).
   */
  extern unsigned int cfag12864b_getrate(void);
  
  /*
   * Enable refreshing
   *
   * Returns 0 if successful (anyone was using it),
   * or != 0 if failed (someone is using it).
   */
  extern unsigned char cfag12864b_enable(void);
  
  /*
   * Disable refreshing
   *
   * You should call this only when you finish using the LCD.
   */
  extern void cfag12864b_disable(void);
  
  /*
   * Is enabled refreshing? (is anyone using the module?)
   *
   * Returns 0 if refreshing is not enabled (anyone is using it),
   * or != 0 if refreshing is enabled (someone is using it).
   *
   * Useful for buffer read-only modules.
   */
  extern unsigned char cfag12864b_isenabled(void);
  
  /*
   * Is the module inited?
   */
  extern unsigned char cfag12864b_isinited(void);
  
  #endif /* _CFAG12864B_H_ */