1/* 2 * include/asm-v850/v850e_timer_d.h -- `Timer D' component often used 3 * with the V850E cpu core 4 * 5 * Copyright (C) 2001,02,03 NEC Electronics Corporation 6 * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> 7 * 8 * This file is subject to the terms and conditions of the GNU General 9 * Public License. See the file COPYING in the main directory of this 10 * archive for more details. 11 * 12 * Written by Miles Bader <miles@gnu.org> 13 */ 14 15#ifndef __V850_V850E_TIMER_D_H__ 16#define __V850_V850E_TIMER_D_H__ 17 18#include <asm/types.h> 19#include <asm/machdep.h> /* Pick up chip-specific defs. */ 20 21 22/* Timer D (16-bit interval timers). */ 23 24/* Count registers for timer D. */ 25#define V850E_TIMER_D_TMD_ADDR(n) (V850E_TIMER_D_TMD_BASE_ADDR + 0x10 * (n)) 26#define V850E_TIMER_D_TMD(n) (*(volatile u16 *)V850E_TIMER_D_TMD_ADDR(n)) 27 28/* Count compare registers for timer D. */ 29#define V850E_TIMER_D_CMD_ADDR(n) (V850E_TIMER_D_CMD_BASE_ADDR + 0x10 * (n)) 30#define V850E_TIMER_D_CMD(n) (*(volatile u16 *)V850E_TIMER_D_CMD_ADDR(n)) 31 32/* Control registers for timer D. */ 33#define V850E_TIMER_D_TMCD_ADDR(n) (V850E_TIMER_D_TMCD_BASE_ADDR + 0x10 * (n)) 34#define V850E_TIMER_D_TMCD(n) (*(volatile u8 *)V850E_TIMER_D_TMCD_ADDR(n)) 35/* Control bits for timer D. */ 36#define V850E_TIMER_D_TMCD_CE 0x2 /* count enable */ 37#define V850E_TIMER_D_TMCD_CAE 0x1 /* clock action enable */ 38/* Clock divider setting (log2). */ 39#define V850E_TIMER_D_TMCD_CS(divlog2) (((divlog2) - V850E_TIMER_D_TMCD_CS_MIN) << 4) 40/* Minimum clock divider setting (log2). */ 41#ifndef V850E_TIMER_D_TMCD_CS_MIN /* Can be overridden by mach-specific hdrs */ 42#define V850E_TIMER_D_TMCD_CS_MIN 2 /* Default is correct for the v850e/ma1 */ 43#endif 44/* Maximum clock divider setting (log2). */ 45#define V850E_TIMER_D_TMCD_CS_MAX (V850E_TIMER_D_TMCD_CS_MIN + 7) 46 47/* Return the clock-divider (log2) of timer D unit N. */ 48#define V850E_TIMER_D_DIVLOG2(n) \ 49 (((V850E_TIMER_D_TMCD(n) >> 4) & 0x7) + V850E_TIMER_D_TMCD_CS_MIN) 50 51 52#ifndef __ASSEMBLY__ 53 54/* Start interval timer TIMER (0-3). The timer will issue the 55 corresponding INTCMD interrupt RATE times per second. This function 56 does not enable the interrupt. */ 57extern void v850e_timer_d_configure (unsigned timer, unsigned rate); 58 59#endif /* !__ASSEMBLY__ */ 60 61 62#endif /* __V850_V850E_TIMER_D_H__ */ 63