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/*
 * linux/include/asm-cris/timex.h
 *
 * CRIS architecture timex specifications
 * 2002-03-04    Johan Adolfsson
 *      Use prescale timer at 25000 Hz instead of the baudrate timer at 
 *      19200 to get rid of the 64ppm to fast timer (and we get better 
 *      resolution within a jiffie as well.
 */
#ifndef _ASM_CRIS_TIMEX_H
#define _ASM_CRIS_TIMEX_H
 
/* The prescaler clock runs at 25MHz, we divide it by 1000 in the prescaler */
/* If you change anything here you must check time.c as well... */
#define PRESCALE_FREQ 25000000
#define PRESCALE_VALUE 1000
#define CLOCK_TICK_RATE 25000 /* Underlying frequency of the HZ timer */
/* The timer0 values gives 40us resolution (1/25000) but interrupts at HZ*/
#define TIMER0_FREQ (CLOCK_TICK_RATE)
#define TIMER0_CLKSEL flexible
#define TIMER0_DIV (TIMER0_FREQ/(HZ))
 
 
#define GET_JIFFIES_USEC() \
  ( (TIMER0_DIV - *R_TIMER0_DATA) * (1000000/HZ)/TIMER0_DIV )
 
unsigned long get_ns_in_jiffie(void);
 
unsigned long timer_data_to_ns(unsigned long timer_data);
 
extern inline unsigned long get_us_in_jiffie_highres(void)
{
	return get_ns_in_jiffie()/1000;
}
/*
 * We don't have a cycle-counter.. but we do not support SMP anyway where this is
 * used so it does not matter.
 */
 
typedef unsigned int cycles_t;
 
extern inline cycles_t get_cycles(void)
{
        return 0;
}
 
#define vxtime_lock()		do {} while (0)
#define vxtime_unlock()		do {} while (0)
 
#endif