/*
 * include/asm-arm/arch-omap/hrtime.h
 *
 * HRT hooks for the TI DaVinci
 *
 * Author: MontaVista, Software, Inc. <source@mvista.com>
 *
 * 2003-2004 (c) MontaVista Software, Inc. This file is licensed under
 * the terms of the GNU General Public License version 2. This program
 * is licensed "as is" without any warranty of any kind, whether express
 * or implied.
 */

#ifndef __ASM_ARCH_HRTIME_H_
#define __ASM_ARCH_HRTIME_H_

#include <linux/timex.h>

#define SC_ARCH2NSEC	25	/* int(log2(2 * CLOCK_TICK_RATE - 1)) */
#define SC_NSEC2ARCH	32

#define scaled_nsec_per_arch_cycle	\
	(SC_n(SC_ARCH2NSEC, NSEC_PER_SEC) / CLOCK_TICK_RATE)

#define scaled_arch_cycles_per_nsec	\
	(SC_n(SC_NSEC2ARCH, CLOCK_TICK_RATE) / NSEC_PER_SEC)

#define arch_cycle_to_nsec(cycles)	\
	mpy_sc_n(SC_ARCH2NSEC, (cycles), scaled_nsec_per_arch_cycle)

#define nsec_to_arch_cycle(nsec)	\
	mpy_sc_n(SC_NSEC2ARCH, (nsec), scaled_arch_cycles_per_nsec)

#ifdef CONFIG_HIGH_RES_TIMERS

int schedule_hr_timer_int(unsigned long, int);
int get_arch_cycles(unsigned long);

#define hrtimer_use		1

#define hr_time_resolution	1000	/* (NSEC_PER_SEC / CLOCK_TICK_RATE) */
#define arch_cycles_per_jiffy	(long)(CLOCK_TICK_RATE / HZ)
#define schedule_jiffies_int(x)	(get_arch_cycles(x) >= arch_cycles_per_jiffy)

#endif				/* CONFIG_HIGH_RES_TIMERS */
#endif				/* __ASM_ARCH_HRTIME_H_ */