aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/rtc.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/rtc.c')
-rw-r--r--arch/x86/kernel/rtc.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index dd6f2b71561b..5d465b207e72 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -1,14 +1,14 @@
1/* 1/*
2 * RTC related functions 2 * RTC related functions
3 */ 3 */
4#include <linux/platform_device.h>
5#include <linux/mc146818rtc.h>
4#include <linux/acpi.h> 6#include <linux/acpi.h>
5#include <linux/bcd.h> 7#include <linux/bcd.h>
6#include <linux/mc146818rtc.h>
7#include <linux/platform_device.h>
8#include <linux/pnp.h> 8#include <linux/pnp.h>
9 9
10#include <asm/time.h>
11#include <asm/vsyscall.h> 10#include <asm/vsyscall.h>
11#include <asm/time.h>
12 12
13#ifdef CONFIG_X86_32 13#ifdef CONFIG_X86_32
14/* 14/*
@@ -16,9 +16,9 @@
16 * register we are working with. It is required for NMI access to the 16 * register we are working with. It is required for NMI access to the
17 * CMOS/RTC registers. See include/asm-i386/mc146818rtc.h for details. 17 * CMOS/RTC registers. See include/asm-i386/mc146818rtc.h for details.
18 */ 18 */
19volatile unsigned long cmos_lock = 0; 19volatile unsigned long cmos_lock;
20EXPORT_SYMBOL(cmos_lock); 20EXPORT_SYMBOL(cmos_lock);
21#endif 21#endif /* CONFIG_X86_32 */
22 22
23/* For two digit years assume time is always after that */ 23/* For two digit years assume time is always after that */
24#define CMOS_YEARS_OFFS 2000 24#define CMOS_YEARS_OFFS 2000
@@ -38,9 +38,9 @@ EXPORT_SYMBOL(rtc_lock);
38 */ 38 */
39int mach_set_rtc_mmss(unsigned long nowtime) 39int mach_set_rtc_mmss(unsigned long nowtime)
40{ 40{
41 int retval = 0;
42 int real_seconds, real_minutes, cmos_minutes; 41 int real_seconds, real_minutes, cmos_minutes;
43 unsigned char save_control, save_freq_select; 42 unsigned char save_control, save_freq_select;
43 int retval = 0;
44 44
45 /* tell the clock it's being set */ 45 /* tell the clock it's being set */
46 save_control = CMOS_READ(RTC_CONTROL); 46 save_control = CMOS_READ(RTC_CONTROL);
@@ -72,8 +72,8 @@ int mach_set_rtc_mmss(unsigned long nowtime)
72 real_seconds = bin2bcd(real_seconds); 72 real_seconds = bin2bcd(real_seconds);
73 real_minutes = bin2bcd(real_minutes); 73 real_minutes = bin2bcd(real_minutes);
74 } 74 }
75 CMOS_WRITE(real_seconds,RTC_SECONDS); 75 CMOS_WRITE(real_seconds, RTC_SECONDS);
76 CMOS_WRITE(real_minutes,RTC_MINUTES); 76 CMOS_WRITE(real_minutes, RTC_MINUTES);
77 } else { 77 } else {
78 printk(KERN_WARNING 78 printk(KERN_WARNING
79 "set_rtc_mmss: can't update from %d to %d\n", 79 "set_rtc_mmss: can't update from %d to %d\n",
@@ -151,6 +151,7 @@ unsigned char rtc_cmos_read(unsigned char addr)
151 outb(addr, RTC_PORT(0)); 151 outb(addr, RTC_PORT(0));
152 val = inb(RTC_PORT(1)); 152 val = inb(RTC_PORT(1));
153 lock_cmos_suffix(addr); 153 lock_cmos_suffix(addr);
154
154 return val; 155 return val;
155} 156}
156EXPORT_SYMBOL(rtc_cmos_read); 157EXPORT_SYMBOL(rtc_cmos_read);
@@ -166,8 +167,8 @@ EXPORT_SYMBOL(rtc_cmos_write);
166 167
167static int set_rtc_mmss(unsigned long nowtime) 168static int set_rtc_mmss(unsigned long nowtime)
168{ 169{
169 int retval;
170 unsigned long flags; 170 unsigned long flags;
171 int retval;
171 172
172 spin_lock_irqsave(&rtc_lock, flags); 173 spin_lock_irqsave(&rtc_lock, flags);
173 retval = set_wallclock(nowtime); 174 retval = set_wallclock(nowtime);
@@ -242,6 +243,7 @@ static __init int add_rtc_cmos(void)
242 platform_device_register(&rtc_device); 243 platform_device_register(&rtc_device);
243 dev_info(&rtc_device.dev, 244 dev_info(&rtc_device.dev,
244 "registered platform RTC device (no PNP device found)\n"); 245 "registered platform RTC device (no PNP device found)\n");
246
245 return 0; 247 return 0;
246} 248}
247device_initcall(add_rtc_cmos); 249device_initcall(add_rtc_cmos);