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-rw-r--r--arch/arm/mach-footbridge/Makefile4
-rw-r--r--arch/arm/mach-footbridge/dc21285-timer.c2
-rw-r--r--arch/arm/mach-footbridge/isa-rtc.c57
-rw-r--r--arch/arm/mach-footbridge/isa-timer.c2
-rw-r--r--arch/arm/mach-footbridge/isa.c18
-rw-r--r--arch/arm/mach-footbridge/time.c164
6 files changed, 73 insertions, 174 deletions
diff --git a/arch/arm/mach-footbridge/Makefile b/arch/arm/mach-footbridge/Makefile
index 32f8609e4f85..3afb1b25946f 100644
--- a/arch/arm/mach-footbridge/Makefile
+++ b/arch/arm/mach-footbridge/Makefile
@@ -4,7 +4,7 @@
4 4
5# Object file lists. 5# Object file lists.
6 6
7obj-y := common.o dc21285.o dma.o isa-irq.o time.o 7obj-y := common.o dc21285.o dma.o isa-irq.o
8obj-m := 8obj-m :=
9obj-n := 9obj-n :=
10obj- := 10obj- :=
@@ -25,4 +25,4 @@ obj-$(CONFIG_ARCH_PERSONAL_SERVER) += personal.o dc21285-timer.o
25obj-$(CONFIG_PCI) +=$(pci-y) 25obj-$(CONFIG_PCI) +=$(pci-y)
26obj-$(CONFIG_LEDS) +=$(leds-y) 26obj-$(CONFIG_LEDS) +=$(leds-y)
27 27
28obj-$(CONFIG_ISA) += isa.o 28obj-$(CONFIG_ISA) += isa.o isa-rtc.o
diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c
index da35bc5c5ccc..bc5e83fb5819 100644
--- a/arch/arm/mach-footbridge/dc21285-timer.c
+++ b/arch/arm/mach-footbridge/dc21285-timer.c
@@ -56,8 +56,6 @@ static void __init footbridge_timer_init(void)
56 *CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_AUTORELOAD | TIMER_CNTL_DIV16; 56 *CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_AUTORELOAD | TIMER_CNTL_DIV16;
57 57
58 setup_irq(IRQ_TIMER1, &footbridge_timer_irq); 58 setup_irq(IRQ_TIMER1, &footbridge_timer_irq);
59
60 isa_rtc_init();
61} 59}
62 60
63struct sys_timer footbridge_timer = { 61struct sys_timer footbridge_timer = {
diff --git a/arch/arm/mach-footbridge/isa-rtc.c b/arch/arm/mach-footbridge/isa-rtc.c
new file mode 100644
index 000000000000..07fde4051f78
--- /dev/null
+++ b/arch/arm/mach-footbridge/isa-rtc.c
@@ -0,0 +1,57 @@
1/*
2 * arch/arm/mach-footbridge/isa-rtc.c
3 *
4 * Copyright (C) 1998 Russell King.
5 * Copyright (C) 1998 Phil Blundell
6 *
7 * CATS has a real-time clock, though the evaluation board doesn't.
8 *
9 * Changelog:
10 * 21-Mar-1998 RMK Created
11 * 27-Aug-1998 PJB CATS support
12 * 28-Dec-1998 APH Made leds optional
13 * 20-Jan-1999 RMK Started merge of EBSA285, CATS and NetWinder
14 * 16-Mar-1999 RMK More support for EBSA285-like machines with RTCs in
15 */
16
17#define RTC_PORT(x) (0x70+(x))
18#define RTC_ALWAYS_BCD 0
19
20#include <linux/init.h>
21#include <linux/mc146818rtc.h>
22#include <linux/bcd.h>
23#include <linux/io.h>
24
25#include "common.h"
26
27void __init isa_rtc_init(void)
28{
29 int reg_d, reg_b;
30
31 /*
32 * Probe for the RTC.
33 */
34 reg_d = CMOS_READ(RTC_REG_D);
35
36 /*
37 * make sure the divider is set
38 */
39 CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_REG_A);
40
41 /*
42 * Set control reg B
43 * (24 hour mode, update enabled)
44 */
45 reg_b = CMOS_READ(RTC_REG_B) & 0x7f;
46 reg_b |= 2;
47 CMOS_WRITE(reg_b, RTC_REG_B);
48
49 if ((CMOS_READ(RTC_REG_A) & 0x7f) == RTC_REF_CLCK_32KHZ &&
50 CMOS_READ(RTC_REG_B) == reg_b) {
51 /*
52 * We have a RTC. Check the battery
53 */
54 if ((reg_d & 0x80) == 0)
55 printk(KERN_WARNING "RTC: *** warning: CMOS battery bad\n");
56 }
57}
diff --git a/arch/arm/mach-footbridge/isa-timer.c b/arch/arm/mach-footbridge/isa-timer.c
index 0c8390082fa8..f488fa2082d7 100644
--- a/arch/arm/mach-footbridge/isa-timer.c
+++ b/arch/arm/mach-footbridge/isa-timer.c
@@ -76,8 +76,6 @@ static struct irqaction isa_timer_irq = {
76 76
77static void __init isa_timer_init(void) 77static void __init isa_timer_init(void)
78{ 78{
79 isa_rtc_init();
80
81 /* enable PIT timer */ 79 /* enable PIT timer */
82 /* set for periodic (4) and LSB/MSB write (0x30) */ 80 /* set for periodic (4) and LSB/MSB write (0x30) */
83 outb(0x34, 0x43); 81 outb(0x34, 0x43);
diff --git a/arch/arm/mach-footbridge/isa.c b/arch/arm/mach-footbridge/isa.c
index 725a219d0ed5..4d9276c27d6f 100644
--- a/arch/arm/mach-footbridge/isa.c
+++ b/arch/arm/mach-footbridge/isa.c
@@ -11,6 +11,9 @@
11#include <linux/serial_8250.h> 11#include <linux/serial_8250.h>
12 12
13#include <asm/irq.h> 13#include <asm/irq.h>
14#include <asm/hardware/dec21285.h>
15
16#include "common.h"
14 17
15static struct resource rtc_resources[] = { 18static struct resource rtc_resources[] = {
16 [0] = { 19 [0] = {
@@ -77,11 +80,18 @@ static struct platform_device serial_device = {
77 80
78static int __init footbridge_isa_init(void) 81static int __init footbridge_isa_init(void)
79{ 82{
80 int err; 83 int err = 0;
81 84
82 err = platform_device_register(&rtc_device); 85 if (!footbridge_cfn_mode())
83 if (err) 86 return 0;
84 printk(KERN_ERR "Unable to register RTC device: %d\n", err); 87
88 /* Personal server doesn't have RTC */
89 if (!machine_is_personal_server()) {
90 isa_rtc_init();
91 err = platform_device_register(&rtc_device);
92 if (err)
93 printk(KERN_ERR "Unable to register RTC device: %d\n", err);
94 }
85 err = platform_device_register(&serial_device); 95 err = platform_device_register(&serial_device);
86 if (err) 96 if (err)
87 printk(KERN_ERR "Unable to register serial device: %d\n", err); 97 printk(KERN_ERR "Unable to register serial device: %d\n", err);
diff --git a/arch/arm/mach-footbridge/time.c b/arch/arm/mach-footbridge/time.c
deleted file mode 100644
index cd1b54ff9fe2..000000000000
--- a/arch/arm/mach-footbridge/time.c
+++ /dev/null
@@ -1,164 +0,0 @@
1/*
2 * arch/arm/mach-footbridge/include/mach/time.h
3 *
4 * Copyright (C) 1998 Russell King.
5 * Copyright (C) 1998 Phil Blundell
6 *
7 * CATS has a real-time clock, though the evaluation board doesn't.
8 *
9 * Changelog:
10 * 21-Mar-1998 RMK Created
11 * 27-Aug-1998 PJB CATS support
12 * 28-Dec-1998 APH Made leds optional
13 * 20-Jan-1999 RMK Started merge of EBSA285, CATS and NetWinder
14 * 16-Mar-1999 RMK More support for EBSA285-like machines with RTCs in
15 */
16
17#define RTC_PORT(x) (rtc_base+(x))
18#define RTC_ALWAYS_BCD 0
19
20#include <linux/timex.h>
21#include <linux/init.h>
22#include <linux/sched.h>
23#include <linux/mc146818rtc.h>
24#include <linux/bcd.h>
25#include <linux/io.h>
26
27#include <mach/hardware.h>
28
29#include <asm/mach/time.h>
30#include "common.h"
31
32static int rtc_base;
33
34static unsigned long __init get_isa_cmos_time(void)
35{
36 unsigned int year, mon, day, hour, min, sec;
37
38 // check to see if the RTC makes sense.....
39 if ((CMOS_READ(RTC_VALID) & RTC_VRT) == 0)
40 return mktime(1970, 1, 1, 0, 0, 0);
41
42 do {
43 sec = CMOS_READ(RTC_SECONDS);
44 min = CMOS_READ(RTC_MINUTES);
45 hour = CMOS_READ(RTC_HOURS);
46 day = CMOS_READ(RTC_DAY_OF_MONTH);
47 mon = CMOS_READ(RTC_MONTH);
48 year = CMOS_READ(RTC_YEAR);
49 } while (sec != CMOS_READ(RTC_SECONDS));
50
51 if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
52 sec = bcd2bin(sec);
53 min = bcd2bin(min);
54 hour = bcd2bin(hour);
55 day = bcd2bin(day);
56 mon = bcd2bin(mon);
57 year = bcd2bin(year);
58 }
59 if ((year += 1900) < 1970)
60 year += 100;
61 return mktime(year, mon, day, hour, min, sec);
62}
63
64static int set_isa_cmos_time(void)
65{
66 int retval = 0;
67 int real_seconds, real_minutes, cmos_minutes;
68 unsigned char save_control, save_freq_select;
69 unsigned long nowtime = xtime.tv_sec;
70
71 save_control = CMOS_READ(RTC_CONTROL); /* tell the clock it's being set */
72 CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL);
73
74 save_freq_select = CMOS_READ(RTC_FREQ_SELECT); /* stop and reset prescaler */
75 CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT);
76
77 cmos_minutes = CMOS_READ(RTC_MINUTES);
78 if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
79 cmos_minutes = bcd2bin(cmos_minutes);
80
81 /*
82 * since we're only adjusting minutes and seconds,
83 * don't interfere with hour overflow. This avoids
84 * messing with unknown time zones but requires your
85 * RTC not to be off by more than 15 minutes
86 */
87 real_seconds = nowtime % 60;
88 real_minutes = nowtime / 60;
89 if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1)
90 real_minutes += 30; /* correct for half hour time zone */
91 real_minutes %= 60;
92
93 if (abs(real_minutes - cmos_minutes) < 30) {
94 if (!(save_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
95 real_seconds = bin2bcd(real_seconds);
96 real_minutes = bin2bcd(real_minutes);
97 }
98 CMOS_WRITE(real_seconds,RTC_SECONDS);
99 CMOS_WRITE(real_minutes,RTC_MINUTES);
100 } else
101 retval = -1;
102
103 /* The following flags have to be released exactly in this order,
104 * otherwise the DS12887 (popular MC146818A clone with integrated
105 * battery and quartz) will not reset the oscillator and will not
106 * update precisely 500 ms later. You won't find this mentioned in
107 * the Dallas Semiconductor data sheets, but who believes data
108 * sheets anyway ... -- Markus Kuhn
109 */
110 CMOS_WRITE(save_control, RTC_CONTROL);
111 CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
112
113 return retval;
114}
115
116void __init isa_rtc_init(void)
117{
118 if (machine_is_personal_server())
119 /*
120 * Add-in 21285s shouldn't access the RTC
121 */
122 rtc_base = 0;
123 else
124 rtc_base = 0x70;
125
126 if (rtc_base) {
127 int reg_d, reg_b;
128
129 /*
130 * Probe for the RTC.
131 */
132 reg_d = CMOS_READ(RTC_REG_D);
133
134 /*
135 * make sure the divider is set
136 */
137 CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_REG_A);
138
139 /*
140 * Set control reg B
141 * (24 hour mode, update enabled)
142 */
143 reg_b = CMOS_READ(RTC_REG_B) & 0x7f;
144 reg_b |= 2;
145 CMOS_WRITE(reg_b, RTC_REG_B);
146
147 if ((CMOS_READ(RTC_REG_A) & 0x7f) == RTC_REF_CLCK_32KHZ &&
148 CMOS_READ(RTC_REG_B) == reg_b) {
149 struct timespec tv;
150
151 /*
152 * We have a RTC. Check the battery
153 */
154 if ((reg_d & 0x80) == 0)
155 printk(KERN_WARNING "RTC: *** warning: CMOS battery bad\n");
156
157 tv.tv_nsec = 0;
158 tv.tv_sec = get_isa_cmos_time();
159 do_settimeofday(&tv);
160 set_rtc = set_isa_cmos_time;
161 } else
162 rtc_base = 0;
163 }
164}
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-25 13:17:33 -0500