[PATCH] aic7xxx_osm build fix
[cris-mirror.git] / include / asm-sparc / mostek.h
blob59b86bc793bf9a7bee6c351f5e6e6bdae04bc0fc
1 /* $Id: mostek.h,v 1.13 2001/01/11 15:07:09 davem Exp $
2 * mostek.h: Describes the various Mostek time of day clock registers.
4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1996 Thomas K. Dyas (tdyas@eden.rutgers.edu)
6 * Added intersil code 05/25/98 Chris Davis (cdavis@cois.on.ca)
7 */
9 #ifndef _SPARC_MOSTEK_H
10 #define _SPARC_MOSTEK_H
12 #include <linux/config.h>
13 #include <asm/idprom.h>
14 #include <asm/io.h>
16 /* M48T02 Register Map (adapted from Sun NVRAM/Hostid FAQ)
18 * Data
19 * Address Function
20 * Bit 7 Bit 6 Bit 5 Bit 4Bit 3 Bit 2 Bit 1 Bit 0
21 * 7ff - - - - - - - - Year 00-99
22 * 7fe 0 0 0 - - - - - Month 01-12
23 * 7fd 0 0 - - - - - - Date 01-31
24 * 7fc 0 FT 0 0 0 - - - Day 01-07
25 * 7fb KS 0 - - - - - - Hours 00-23
26 * 7fa 0 - - - - - - - Minutes 00-59
27 * 7f9 ST - - - - - - - Seconds 00-59
28 * 7f8 W R S - - - - - Control
30 * * ST is STOP BIT
31 * * W is WRITE BIT
32 * * R is READ BIT
33 * * S is SIGN BIT
34 * * FT is FREQ TEST BIT
35 * * KS is KICK START BIT
38 /* The Mostek 48t02 real time clock and NVRAM chip. The registers
39 * other than the control register are in binary coded decimal. Some
40 * control bits also live outside the control register.
42 #define mostek_read(_addr) readb(_addr)
43 #define mostek_write(_addr,_val) writeb(_val, _addr)
44 #define MOSTEK_EEPROM 0x0000UL
45 #define MOSTEK_IDPROM 0x07d8UL
46 #define MOSTEK_CREG 0x07f8UL
47 #define MOSTEK_SEC 0x07f9UL
48 #define MOSTEK_MIN 0x07faUL
49 #define MOSTEK_HOUR 0x07fbUL
50 #define MOSTEK_DOW 0x07fcUL
51 #define MOSTEK_DOM 0x07fdUL
52 #define MOSTEK_MONTH 0x07feUL
53 #define MOSTEK_YEAR 0x07ffUL
55 struct mostek48t02 {
56 volatile char eeprom[2008]; /* This is the eeprom, don't touch! */
57 struct idprom idprom; /* The idprom lives here. */
58 volatile unsigned char creg; /* Control register */
59 volatile unsigned char sec; /* Seconds (0-59) */
60 volatile unsigned char min; /* Minutes (0-59) */
61 volatile unsigned char hour; /* Hour (0-23) */
62 volatile unsigned char dow; /* Day of the week (1-7) */
63 volatile unsigned char dom; /* Day of the month (1-31) */
64 volatile unsigned char month; /* Month of year (1-12) */
65 volatile unsigned char year; /* Year (0-99) */
68 extern spinlock_t mostek_lock;
69 extern void __iomem *mstk48t02_regs;
71 /* Control register values. */
72 #define MSTK_CREG_WRITE 0x80 /* Must set this before placing values. */
73 #define MSTK_CREG_READ 0x40 /* Stop updates to allow a clean read. */
74 #define MSTK_CREG_SIGN 0x20 /* Slow/speed clock in calibration mode. */
76 /* Control bits that live in the other registers. */
77 #define MSTK_STOP 0x80 /* Stop the clock oscillator. (sec) */
78 #define MSTK_KICK_START 0x80 /* Kick start the clock chip. (hour) */
79 #define MSTK_FREQ_TEST 0x40 /* Frequency test mode. (day) */
81 #define MSTK_YEAR_ZERO 1968 /* If year reg has zero, it is 1968. */
82 #define MSTK_CVT_YEAR(yr) ((yr) + MSTK_YEAR_ZERO)
84 /* Masks that define how much space each value takes up. */
85 #define MSTK_SEC_MASK 0x7f
86 #define MSTK_MIN_MASK 0x7f
87 #define MSTK_HOUR_MASK 0x3f
88 #define MSTK_DOW_MASK 0x07
89 #define MSTK_DOM_MASK 0x3f
90 #define MSTK_MONTH_MASK 0x1f
91 #define MSTK_YEAR_MASK 0xff
93 /* Binary coded decimal conversion macros. */
94 #define MSTK_REGVAL_TO_DECIMAL(x) (((x) & 0x0F) + 0x0A * ((x) >> 0x04))
95 #define MSTK_DECIMAL_TO_REGVAL(x) ((((x) / 0x0A) << 0x04) + ((x) % 0x0A))
97 /* Generic register set and get macros for internal use. */
98 #define MSTK_GET(regs,var,mask) (MSTK_REGVAL_TO_DECIMAL(((struct mostek48t02 *)regs)->var & MSTK_ ## mask ## _MASK))
99 #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)
101 /* Macros to make register access easier on our fingers. These give you
102 * the decimal value of the register requested if applicable. You pass
103 * the a pointer to a 'struct mostek48t02'.
105 #define MSTK_REG_CREG(regs) (((struct mostek48t02 *)regs)->creg)
106 #define MSTK_REG_SEC(regs) MSTK_GET(regs,sec,SEC)
107 #define MSTK_REG_MIN(regs) MSTK_GET(regs,min,MIN)
108 #define MSTK_REG_HOUR(regs) MSTK_GET(regs,hour,HOUR)
109 #define MSTK_REG_DOW(regs) MSTK_GET(regs,dow,DOW)
110 #define MSTK_REG_DOM(regs) MSTK_GET(regs,dom,DOM)
111 #define MSTK_REG_MONTH(regs) MSTK_GET(regs,month,MONTH)
112 #define MSTK_REG_YEAR(regs) MSTK_GET(regs,year,YEAR)
114 #define MSTK_SET_REG_SEC(regs,value) MSTK_SET(regs,sec,value,SEC)
115 #define MSTK_SET_REG_MIN(regs,value) MSTK_SET(regs,min,value,MIN)
116 #define MSTK_SET_REG_HOUR(regs,value) MSTK_SET(regs,hour,value,HOUR)
117 #define MSTK_SET_REG_DOW(regs,value) MSTK_SET(regs,dow,value,DOW)
118 #define MSTK_SET_REG_DOM(regs,value) MSTK_SET(regs,dom,value,DOM)
119 #define MSTK_SET_REG_MONTH(regs,value) MSTK_SET(regs,month,value,MONTH)
120 #define MSTK_SET_REG_YEAR(regs,value) MSTK_SET(regs,year,value,YEAR)
123 /* The Mostek 48t08 clock chip. Found on Sun4m's I think. It has the
124 * same (basically) layout of the 48t02 chip except for the extra
125 * NVRAM on board (8 KB against the 48t02's 2 KB).
127 struct mostek48t08 {
128 char offset[6*1024]; /* Magic things may be here, who knows? */
129 struct mostek48t02 regs; /* Here is what we are interested in. */
132 extern enum sparc_clock_type sp_clock_typ;
134 #ifdef CONFIG_SUN4
135 enum sparc_clock_type { MSTK48T02, MSTK48T08, \
136 INTERSIL, MSTK_INVALID };
137 #else
138 enum sparc_clock_type { MSTK48T02, MSTK48T08, \
139 MSTK_INVALID };
140 #endif
142 #ifdef CONFIG_SUN4
143 /* intersil on a sun 4/260 code data from harris doc */
144 struct intersil_dt {
145 volatile unsigned char int_csec;
146 volatile unsigned char int_hour;
147 volatile unsigned char int_min;
148 volatile unsigned char int_sec;
149 volatile unsigned char int_month;
150 volatile unsigned char int_day;
151 volatile unsigned char int_year;
152 volatile unsigned char int_dow;
155 struct intersil {
156 struct intersil_dt clk;
157 struct intersil_dt cmp;
158 volatile unsigned char int_intr_reg;
159 volatile unsigned char int_cmd_reg;
162 #define INTERSIL_STOP 0x0
163 #define INTERSIL_START 0x8
164 #define INTERSIL_INTR_DISABLE 0x0
165 #define INTERSIL_INTR_ENABLE 0x10
166 #define INTERSIL_32K 0x0
167 #define INTERSIL_NORMAL 0x0
168 #define INTERSIL_24H 0x4
169 #define INTERSIL_INT_100HZ 0x2
171 /* end of intersil info */
172 #endif
174 #endif /* !(_SPARC_MOSTEK_H) */