mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 12:14:01 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
175 lines
6.5 KiB
C
175 lines
6.5 KiB
C
/* $Id: mostek.h,v 1.13 2001/01/11 15:07:09 davem Exp $
|
|
* mostek.h: Describes the various Mostek time of day clock registers.
|
|
*
|
|
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
|
* Copyright (C) 1996 Thomas K. Dyas (tdyas@eden.rutgers.edu)
|
|
* Added intersil code 05/25/98 Chris Davis (cdavis@cois.on.ca)
|
|
*/
|
|
|
|
#ifndef _SPARC_MOSTEK_H
|
|
#define _SPARC_MOSTEK_H
|
|
|
|
#include <linux/config.h>
|
|
#include <asm/idprom.h>
|
|
#include <asm/io.h>
|
|
|
|
/* M48T02 Register Map (adapted from Sun NVRAM/Hostid FAQ)
|
|
*
|
|
* Data
|
|
* Address Function
|
|
* Bit 7 Bit 6 Bit 5 Bit 4Bit 3 Bit 2 Bit 1 Bit 0
|
|
* 7ff - - - - - - - - Year 00-99
|
|
* 7fe 0 0 0 - - - - - Month 01-12
|
|
* 7fd 0 0 - - - - - - Date 01-31
|
|
* 7fc 0 FT 0 0 0 - - - Day 01-07
|
|
* 7fb KS 0 - - - - - - Hours 00-23
|
|
* 7fa 0 - - - - - - - Minutes 00-59
|
|
* 7f9 ST - - - - - - - Seconds 00-59
|
|
* 7f8 W R S - - - - - Control
|
|
*
|
|
* * ST is STOP BIT
|
|
* * W is WRITE BIT
|
|
* * R is READ BIT
|
|
* * S is SIGN BIT
|
|
* * FT is FREQ TEST BIT
|
|
* * KS is KICK START BIT
|
|
*/
|
|
|
|
/* The Mostek 48t02 real time clock and NVRAM chip. The registers
|
|
* other than the control register are in binary coded decimal. Some
|
|
* control bits also live outside the control register.
|
|
*/
|
|
#define mostek_read(_addr) readb(_addr)
|
|
#define mostek_write(_addr,_val) writeb(_val, _addr)
|
|
#define MOSTEK_EEPROM 0x0000UL
|
|
#define MOSTEK_IDPROM 0x07d8UL
|
|
#define MOSTEK_CREG 0x07f8UL
|
|
#define MOSTEK_SEC 0x07f9UL
|
|
#define MOSTEK_MIN 0x07faUL
|
|
#define MOSTEK_HOUR 0x07fbUL
|
|
#define MOSTEK_DOW 0x07fcUL
|
|
#define MOSTEK_DOM 0x07fdUL
|
|
#define MOSTEK_MONTH 0x07feUL
|
|
#define MOSTEK_YEAR 0x07ffUL
|
|
|
|
struct mostek48t02 {
|
|
volatile char eeprom[2008]; /* This is the eeprom, don't touch! */
|
|
struct idprom idprom; /* The idprom lives here. */
|
|
volatile unsigned char creg; /* Control register */
|
|
volatile unsigned char sec; /* Seconds (0-59) */
|
|
volatile unsigned char min; /* Minutes (0-59) */
|
|
volatile unsigned char hour; /* Hour (0-23) */
|
|
volatile unsigned char dow; /* Day of the week (1-7) */
|
|
volatile unsigned char dom; /* Day of the month (1-31) */
|
|
volatile unsigned char month; /* Month of year (1-12) */
|
|
volatile unsigned char year; /* Year (0-99) */
|
|
};
|
|
|
|
extern spinlock_t mostek_lock;
|
|
extern void __iomem *mstk48t02_regs;
|
|
|
|
/* Control register values. */
|
|
#define MSTK_CREG_WRITE 0x80 /* Must set this before placing values. */
|
|
#define MSTK_CREG_READ 0x40 /* Stop updates to allow a clean read. */
|
|
#define MSTK_CREG_SIGN 0x20 /* Slow/speed clock in calibration mode. */
|
|
|
|
/* Control bits that live in the other registers. */
|
|
#define MSTK_STOP 0x80 /* Stop the clock oscillator. (sec) */
|
|
#define MSTK_KICK_START 0x80 /* Kick start the clock chip. (hour) */
|
|
#define MSTK_FREQ_TEST 0x40 /* Frequency test mode. (day) */
|
|
|
|
#define MSTK_YEAR_ZERO 1968 /* If year reg has zero, it is 1968. */
|
|
#define MSTK_CVT_YEAR(yr) ((yr) + MSTK_YEAR_ZERO)
|
|
|
|
/* Masks that define how much space each value takes up. */
|
|
#define MSTK_SEC_MASK 0x7f
|
|
#define MSTK_MIN_MASK 0x7f
|
|
#define MSTK_HOUR_MASK 0x3f
|
|
#define MSTK_DOW_MASK 0x07
|
|
#define MSTK_DOM_MASK 0x3f
|
|
#define MSTK_MONTH_MASK 0x1f
|
|
#define MSTK_YEAR_MASK 0xff
|
|
|
|
/* Binary coded decimal conversion macros. */
|
|
#define MSTK_REGVAL_TO_DECIMAL(x) (((x) & 0x0F) + 0x0A * ((x) >> 0x04))
|
|
#define MSTK_DECIMAL_TO_REGVAL(x) ((((x) / 0x0A) << 0x04) + ((x) % 0x0A))
|
|
|
|
/* Generic register set and get macros for internal use. */
|
|
#define MSTK_GET(regs,var,mask) (MSTK_REGVAL_TO_DECIMAL(((struct mostek48t02 *)regs)->var & MSTK_ ## mask ## _MASK))
|
|
#define MSTK_SET(regs,var,value,mask) do { ((struct mostek48t02 *)regs)->var &= ~(MSTK_ ## mask ## _MASK); ((struct mostek48t02 *)regs)->var |= MSTK_DECIMAL_TO_REGVAL(value) & (MSTK_ ## mask ## _MASK); } while (0)
|
|
|
|
/* Macros to make register access easier on our fingers. These give you
|
|
* the decimal value of the register requested if applicable. You pass
|
|
* the a pointer to a 'struct mostek48t02'.
|
|
*/
|
|
#define MSTK_REG_CREG(regs) (((struct mostek48t02 *)regs)->creg)
|
|
#define MSTK_REG_SEC(regs) MSTK_GET(regs,sec,SEC)
|
|
#define MSTK_REG_MIN(regs) MSTK_GET(regs,min,MIN)
|
|
#define MSTK_REG_HOUR(regs) MSTK_GET(regs,hour,HOUR)
|
|
#define MSTK_REG_DOW(regs) MSTK_GET(regs,dow,DOW)
|
|
#define MSTK_REG_DOM(regs) MSTK_GET(regs,dom,DOM)
|
|
#define MSTK_REG_MONTH(regs) MSTK_GET(regs,month,MONTH)
|
|
#define MSTK_REG_YEAR(regs) MSTK_GET(regs,year,YEAR)
|
|
|
|
#define MSTK_SET_REG_SEC(regs,value) MSTK_SET(regs,sec,value,SEC)
|
|
#define MSTK_SET_REG_MIN(regs,value) MSTK_SET(regs,min,value,MIN)
|
|
#define MSTK_SET_REG_HOUR(regs,value) MSTK_SET(regs,hour,value,HOUR)
|
|
#define MSTK_SET_REG_DOW(regs,value) MSTK_SET(regs,dow,value,DOW)
|
|
#define MSTK_SET_REG_DOM(regs,value) MSTK_SET(regs,dom,value,DOM)
|
|
#define MSTK_SET_REG_MONTH(regs,value) MSTK_SET(regs,month,value,MONTH)
|
|
#define MSTK_SET_REG_YEAR(regs,value) MSTK_SET(regs,year,value,YEAR)
|
|
|
|
|
|
/* The Mostek 48t08 clock chip. Found on Sun4m's I think. It has the
|
|
* same (basically) layout of the 48t02 chip except for the extra
|
|
* NVRAM on board (8 KB against the 48t02's 2 KB).
|
|
*/
|
|
struct mostek48t08 {
|
|
char offset[6*1024]; /* Magic things may be here, who knows? */
|
|
struct mostek48t02 regs; /* Here is what we are interested in. */
|
|
};
|
|
|
|
extern enum sparc_clock_type sp_clock_typ;
|
|
|
|
#ifdef CONFIG_SUN4
|
|
enum sparc_clock_type { MSTK48T02, MSTK48T08, \
|
|
INTERSIL, MSTK_INVALID };
|
|
#else
|
|
enum sparc_clock_type { MSTK48T02, MSTK48T08, \
|
|
MSTK_INVALID };
|
|
#endif
|
|
|
|
#ifdef CONFIG_SUN4
|
|
/* intersil on a sun 4/260 code data from harris doc */
|
|
struct intersil_dt {
|
|
volatile unsigned char int_csec;
|
|
volatile unsigned char int_hour;
|
|
volatile unsigned char int_min;
|
|
volatile unsigned char int_sec;
|
|
volatile unsigned char int_month;
|
|
volatile unsigned char int_day;
|
|
volatile unsigned char int_year;
|
|
volatile unsigned char int_dow;
|
|
};
|
|
|
|
struct intersil {
|
|
struct intersil_dt clk;
|
|
struct intersil_dt cmp;
|
|
volatile unsigned char int_intr_reg;
|
|
volatile unsigned char int_cmd_reg;
|
|
};
|
|
|
|
#define INTERSIL_STOP 0x0
|
|
#define INTERSIL_START 0x8
|
|
#define INTERSIL_INTR_DISABLE 0x0
|
|
#define INTERSIL_INTR_ENABLE 0x10
|
|
#define INTERSIL_32K 0x0
|
|
#define INTERSIL_NORMAL 0x0
|
|
#define INTERSIL_24H 0x4
|
|
#define INTERSIL_INT_100HZ 0x2
|
|
|
|
/* end of intersil info */
|
|
#endif
|
|
|
|
#endif /* !(_SPARC_MOSTEK_H) */
|