Current File : //usr/src/linux-headers-5.15.0-125-generic/include/linux/cfag12864b.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Filename: cfag12864b.h
* Version: 0.1.0
* Description: cfag12864b LCD driver header
*
* Author: Copyright (C) Miguel Ojeda <ojeda@kernel.org>
* 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_ */
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