mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-25 18:30:06 +00:00
![Arnd Bergmann](/assets/img/avatar_default.png)
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 */
|