include/linux/cfag12864b.h

Source file repositories/reference/linux-study-clean/include/linux/cfag12864b.h

File Facts

System
Linux kernel
Corpus path
include/linux/cfag12864b.h
Extension
.h
Size
1098 bytes
Lines
52
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#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;

/*
 * 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 the module inited?
 */
extern unsigned char cfag12864b_isinited(void);

#endif /* _CFAG12864B_H_ */

Annotation

Implementation Notes