linux/include/asm-generic/timex.h
Arnd Bergmann ae49e80795 asm-generic: add legacy I/O header files
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>
2009-06-11 21:02:42 +02:00

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 */