The dma.h, hw_irq.h, serial.h and timex.h files originally described PC-style i8237, i8259A, i8250, i8253 and i8255 chips as well as the VGA style text mode graphics. Modern architectures live happily without these specific interfaces, but a few definitions from these headers keep getting used in common code. The new generic headers are what most architectures use anyway nowadays, just implementing the minimal definitions. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
		
			
				
	
	
		
			22 lines
		
	
	
	
		
			469 B
			
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			22 lines
		
	
	
	
		
			469 B
			
		
	
	
	
		
			C
		
	
	
	
	
	
#ifndef __ASM_GENERIC_TIMEX_H
 | 
						|
#define __ASM_GENERIC_TIMEX_H
 | 
						|
 | 
						|
/*
 | 
						|
 * If you have a cycle counter, return the value here.
 | 
						|
 */
 | 
						|
typedef unsigned long cycles_t;
 | 
						|
#ifndef get_cycles
 | 
						|
static inline cycles_t get_cycles(void)
 | 
						|
{
 | 
						|
	return 0;
 | 
						|
}
 | 
						|
#endif
 | 
						|
 | 
						|
/*
 | 
						|
 * Architectures are encouraged to implement read_current_timer
 | 
						|
 * and define this in order to avoid the expensive delay loop
 | 
						|
 * calibration during boot.
 | 
						|
 */
 | 
						|
#undef ARCH_HAS_READ_CURRENT_TIMER
 | 
						|
 | 
						|
#endif /* __ASM_GENERIC_TIMEX_H */
 |