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MIPS: IP22/28: Switch over to RTC class driver 

This patchset removes some dead code and creates a platform device
for the RTC class driver.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Thomas Bogendoerfer 2008-10-14 17:16:55 +02:00 committed by Ralf Baechle
parent 540799e32e
commit 7d81a5e03d
6 changed files with 15 additions and 89 deletions
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18
arch/mips/include/asm/mach-ip22/ds1286.h
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@ -1,18 +0,0 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1998, 2001, 03 by Ralf Baechle
*
* RTC routines for PC style attached Dallas chip.
*/
#ifndef __ASM_MACH_IP22_DS1286_H
#define __ASM_MACH_IP22_DS1286_H
#include <asm/sgi/hpc3.h>
#define rtc_read(reg) (hpc3c0->rtcregs[(reg)] & 0xff)
#define rtc_write(data, reg) do { hpc3c0->rtcregs[(reg)] = (data); } while(0)
#endif /* __ASM_MACH_IP22_DS1286_H */

4
arch/mips/include/asm/mach-ip28/ds1286.h
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@ -1,4 +0,0 @@
#ifndef __ASM_MACH_IP28_DS1286_H
#define __ASM_MACH_IP28_DS1286_H
#include <asm/mach-ip22/ds1286.h>
#endif /* __ASM_MACH_IP28_DS1286_H */

15
arch/mips/sgi-ip22/ip22-platform.c
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@ -192,3 +192,18 @@ static int __init sgi_button_devinit(void)
}
device_initcall(sgi_button_devinit);
static int __init sgi_ds1286_devinit(void)
{
struct resource res;
memset(&res, 0, sizeof(res));
res.start = HPC3_CHIP0_BASE + offsetof(struct hpc3_regs, rtcregs);
res.end = res.start + sizeof(hpc3c0->rtcregs) - 1;
res.flags = IORESOURCE_MEM;
return IS_ERR(platform_device_register_simple("rtc-ds1286", -1,
&res, 1));
}
device_initcall(sgi_ds1286_devinit);

1
arch/mips/sgi-ip22/ip22-setup.c
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@ -4,7 +4,6 @@
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
* Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
*/
#include <linux/ds1286.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>

64
arch/mips/sgi-ip22/ip22-time.c
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@ -10,7 +10,6 @@
* Copyright (C) 2003, 06 Ralf Baechle (ralf@linux-mips.org)
*/
#include <linux/bcd.h>
#include <linux/ds1286.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/kernel.h>
@ -29,69 +28,6 @@
#include <asm/sgi/hpc3.h>
#include <asm/sgi/ip22.h>
/*
* Note that mktime uses month from 1 to 12 while rtc_time_to_tm
* uses 0 to 11.
*/
unsigned long read_persistent_clock(void)
{
unsigned int yrs, mon, day, hrs, min, sec;
unsigned int save_control;
unsigned long flags;
spin_lock_irqsave(&rtc_lock, flags);
save_control = hpc3c0->rtcregs[RTC_CMD] & 0xff;
hpc3c0->rtcregs[RTC_CMD] = save_control | RTC_TE;
sec = BCD2BIN(hpc3c0->rtcregs[RTC_SECONDS] & 0xff);
min = BCD2BIN(hpc3c0->rtcregs[RTC_MINUTES] & 0xff);
hrs = BCD2BIN(hpc3c0->rtcregs[RTC_HOURS] & 0x3f);
day = BCD2BIN(hpc3c0->rtcregs[RTC_DATE] & 0xff);
mon = BCD2BIN(hpc3c0->rtcregs[RTC_MONTH] & 0x1f);
yrs = BCD2BIN(hpc3c0->rtcregs[RTC_YEAR] & 0xff);
hpc3c0->rtcregs[RTC_CMD] = save_control;
spin_unlock_irqrestore(&rtc_lock, flags);
if (yrs < 45)
yrs += 30;
if ((yrs += 40) < 70)
yrs += 100;
return mktime(yrs + 1900, mon, day, hrs, min, sec);
}
int rtc_mips_set_time(unsigned long tim)
{
struct rtc_time tm;
unsigned int save_control;
unsigned long flags;
rtc_time_to_tm(tim, &tm);
tm.tm_mon += 1; /* tm_mon starts at zero */
tm.tm_year -= 40;
if (tm.tm_year >= 100)
tm.tm_year -= 100;
spin_lock_irqsave(&rtc_lock, flags);
save_control = hpc3c0->rtcregs[RTC_CMD] & 0xff;
hpc3c0->rtcregs[RTC_CMD] = save_control | RTC_TE;
hpc3c0->rtcregs[RTC_YEAR] = BIN2BCD(tm.tm_year);
hpc3c0->rtcregs[RTC_MONTH] = BIN2BCD(tm.tm_mon);
hpc3c0->rtcregs[RTC_DATE] = BIN2BCD(tm.tm_mday);
hpc3c0->rtcregs[RTC_HOURS] = BIN2BCD(tm.tm_hour);
hpc3c0->rtcregs[RTC_MINUTES] = BIN2BCD(tm.tm_min);
hpc3c0->rtcregs[RTC_SECONDS] = BIN2BCD(tm.tm_sec);
hpc3c0->rtcregs[RTC_HUNDREDTH_SECOND] = 0;
hpc3c0->rtcregs[RTC_CMD] = save_control;
spin_unlock_irqrestore(&rtc_lock, flags);
return 0;
}
static unsigned long dosample(void)
{
u32 ct0, ct1;

2
include/linux/ds1286.h
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@ -8,8 +8,6 @@
#ifndef __LINUX_DS1286_H
#define __LINUX_DS1286_H
#include <asm/ds1286.h>
/**********************************************************************
* register summary
**********************************************************************/