/* SPDX-License-Identifier: GPL-2.0 */

  /*
   *    Filename: cfag12864b.h
   *     Version: 0.1.0
   * Description: cfag12864b LCD driver header

   *

   *      Author: Copyright (C) Miguel Ojeda Sandonis

   *        Date: 2006-10-12

   */
  
  #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_ */