[PATCH 2.6.9-rc3-mm2 2/5] [m32r] Remove arch/m32r/drivers/ds1302.c
From: Hirokazu Takata
Date: Tue Oct 05 2004 - 21:37:19 EST
[PATCH 2.6.9-rc3-mm2 2/5] [m32r] Remove arch/m32r/drivers/ds1302.c
Please remove obsolete m32r-specific driver files,
which are no longer used.
Thanks.
Signed-off-by: Hirokazu Takata <takata@xxxxxxxxxxxxxx>
---
arch/m32r/drivers/ds1302.c | 432 ---------------------------------------------
1 files changed, 432 deletions(-)
diff -ruNp a/arch/m32r/drivers/ds1302.c b/arch/m32r/drivers/ds1302.c
--- a/arch/m32r/drivers/ds1302.c 2004-10-01 11:14:54.000000000 +0900
+++ b/arch/m32r/drivers/ds1302.c 1970-01-01 09:00:00.000000000 +0900
@@ -1,432 +0,0 @@
-/*!***************************************************************************
-*!
-*! FILE NAME : ds1302.c
-*!
-*! DESCRIPTION: Implements an interface for the DS1302 RTC through Etrax I/O
-*!
-*! Functions exported: ds1302_readreg, ds1302_writereg, ds1302_init, get_rtc_status
-*!
-*! $Log: ds1302.c,v $
-*! Revision 1.2 2003/10/29 08:42:58 fujiwara
-*! Set PLD_RTCBAUR from bus clock
-*!
-*! Revision 1.12 2002/04/10 15:35:25 johana
-*! Moved probe function closer to init function and marked it __init.
-*!
-*! Revision 1.11 2001/06/14 12:35:52 jonashg
-*! The ATA hack is back. It is unfortunately the only way to set g27 to output.
-*!
-*! Revision 1.9 2001/06/14 10:00:14 jonashg
-*! No need for tempudelay to be inline anymore (had to adjust the usec to
-*! loops conversion because of this to make it slow enough to be a udelay).
-*!
-*! Revision 1.8 2001/06/14 08:06:32 jonashg
-*! Made tempudelay delay usecs (well, just a tad more).
-*!
-*! Revision 1.7 2001/06/13 14:18:11 jonashg
-*! Only allow processes with SYS_TIME capability to set time and charge.
-*!
-*! Revision 1.6 2001/06/12 15:22:07 jonashg
-*! * Made init function __init.
-*! * Parameter to out_byte() is unsigned char.
-*! * The magic number 42 has got a name.
-*! * Removed comment about /proc (nothing is exported there).
-*!
-*! Revision 1.5 2001/06/12 14:35:13 jonashg
-*! Gave the module a name and added it to printk's.
-*!
-*! Revision 1.4 2001/05/31 14:53:40 jonashg
-*! Made tempudelay() inline so that the watchdog doesn't reset (see
-*! function comment).
-*!
-*! Revision 1.3 2001/03/26 16:03:06 bjornw
-*! Needs linux/config.h
-*!
-*! Revision 1.2 2001/03/20 19:42:00 bjornw
-*! Use the ETRAX prefix on the DS1302 options
-*!
-*! Revision 1.1 2001/03/20 09:13:50 magnusmn
-*! Linux 2.4 port
-*!
-*! Revision 1.10 2000/07/05 15:38:23 bjornw
-*! Dont update kernel time when a RTC_SET_TIME is done
-*!
-*! Revision 1.9 2000/03/02 15:42:59 macce
-*! * Hack to make RTC work on all 2100/2400
-*!
-*! Revision 1.8 2000/02/23 16:59:18 torbjore
-*! added setup of R_GEN_CONFIG when RTC is connected to the generic port.
-*!
-*! Revision 1.7 2000/01/17 15:51:43 johana
-*! Added RTC_SET_CHARGE ioctl to enable trickle charger.
-*!
-*! Revision 1.6 1999/10/27 13:19:47 bjornw
-*! Added update_xtime_from_cmos which reads back the updated RTC into the kernel.
-*! /dev/rtc calls it now.
-*!
-*! Revision 1.5 1999/10/27 12:39:37 bjornw
-*! Disabled superuser check. Anyone can now set the time.
-*!
-*! Revision 1.4 1999/09/02 13:27:46 pkj
-*! Added shadow for R_PORT_PB_CONFIG.
-*! Renamed port_g_shadow to port_g_data_shadow.
-*!
-*! Revision 1.3 1999/09/02 08:28:06 pkj
-*! Made it possible to select either port PB or the generic port for the RST
-*! signal line to the DS1302 RTC.
-*! Also make sure the RST bit is configured as output on Port PB (if used).
-*!
-*! Revision 1.2 1999/09/01 14:47:20 bjornw
-*! Added support for /dev/rtc operations with ioctl RD_TIME and SET_TIME to read
-*! and set the date. Register as major 121.
-*!
-*! Revision 1.1 1999/09/01 09:45:29 bjornw
-*! Implemented a DS1302 RTC driver.
-*!
-*!
-*! ---------------------------------------------------------------------------
-*!
-*! (C) Copyright 1999, 2000, 2001 Axis Communications AB, LUND, SWEDEN
-*!
-*! $Id: ds1302.c,v 1.2 2003/10/29 08:42:58 fujiwara Exp $
-*!
-*!***************************************************************************/
-
-#include <linux/config.h>
-
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/miscdevice.h>
-#include <linux/delay.h>
-#include <linux/bcd.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/rtc.h>
-#include <asm/m32r.h>
-
-#define RTC_MAJOR_NR 121 /* local major, change later */
-
-static const char ds1302_name[] = "ds1302";
-
-/* Send 8 bits. */
-static void
-out_byte_rtc(unsigned int reg_addr, unsigned char x)
-{
- //RST H
- outw(0x0001,(unsigned long)PLD_RTCRSTODT);
- //write data
- outw(((x<<8)|(reg_addr&0xff)),(unsigned long)PLD_RTCWRDATA);
- //WE
- outw(0x0002,(unsigned long)PLD_RTCCR);
- //wait
- while(inw((unsigned long)PLD_RTCCR));
-
- //RST L
- outw(0x0000,(unsigned long)PLD_RTCRSTODT);
-
-}
-
-static unsigned char
-in_byte_rtc(unsigned int reg_addr)
-{
- unsigned char retval;
-
- //RST H
- outw(0x0001,(unsigned long)PLD_RTCRSTODT);
- //write data
- outw((reg_addr&0xff),(unsigned long)PLD_RTCRDDATA);
- //RE
- outw(0x0001,(unsigned long)PLD_RTCCR);
- //wait
- while(inw((unsigned long)PLD_RTCCR));
-
- //read data
- retval=(inw((unsigned long)PLD_RTCRDDATA) & 0xff00)>>8;
-
- //RST L
- outw(0x0000,(unsigned long)PLD_RTCRSTODT);
-
- return retval;
-}
-
-/* Enable writing. */
-
-static void
-ds1302_wenable(void)
-{
- out_byte_rtc(0x8e,0x00);
-}
-
-/* Disable writing. */
-
-static void
-ds1302_wdisable(void)
-{
- out_byte_rtc(0x8e,0x80);
-}
-
-
-
-/* Read a byte from the selected register in the DS1302. */
-
-unsigned char
-ds1302_readreg(int reg)
-{
- unsigned char x;
-
- x=in_byte_rtc((0x81 | (reg << 1))); /* read register */
-
- return x;
-}
-
-/* Write a byte to the selected register. */
-
-void
-ds1302_writereg(int reg, unsigned char val)
-{
- ds1302_wenable();
- out_byte_rtc((0x80 | (reg << 1)),val);
- ds1302_wdisable();
-}
-
-void
-get_rtc_time(struct rtc_time *rtc_tm)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- local_irq_disable();
-
- rtc_tm->tm_sec = CMOS_READ(RTC_SECONDS);
- rtc_tm->tm_min = CMOS_READ(RTC_MINUTES);
- rtc_tm->tm_hour = CMOS_READ(RTC_HOURS);
- rtc_tm->tm_mday = CMOS_READ(RTC_DAY_OF_MONTH);
- rtc_tm->tm_mon = CMOS_READ(RTC_MONTH);
- rtc_tm->tm_year = CMOS_READ(RTC_YEAR);
-
- local_irq_restore(flags);
-
- BCD_TO_BIN(rtc_tm->tm_sec);
- BCD_TO_BIN(rtc_tm->tm_min);
- BCD_TO_BIN(rtc_tm->tm_hour);
- BCD_TO_BIN(rtc_tm->tm_mday);
- BCD_TO_BIN(rtc_tm->tm_mon);
- BCD_TO_BIN(rtc_tm->tm_year);
-
- /*
- * Account for differences between how the RTC uses the values
- * and how they are defined in a struct rtc_time;
- */
-
- if (rtc_tm->tm_year <= 69)
- rtc_tm->tm_year += 100;
-
- rtc_tm->tm_mon--;
-}
-
-static unsigned char days_in_mo[] =
- {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-
-/* ioctl that supports RTC_RD_TIME and RTC_SET_TIME (read and set time/date). */
-
-static int
-rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- unsigned long flags;
-
- switch(cmd) {
- case RTC_RD_TIME: /* read the time/date from RTC */
- {
- struct rtc_time rtc_tm;
-
- memset(&rtc_tm, 0, sizeof (struct rtc_time));
- get_rtc_time(&rtc_tm);
- if (copy_to_user((struct rtc_time*)arg, &rtc_tm, sizeof(struct rtc_time)))
- return -EFAULT;
- return 0;
- }
-
- case RTC_SET_TIME: /* set the RTC */
- {
- struct rtc_time rtc_tm;
- unsigned char mon, day, hrs, min, sec, leap_yr;
- unsigned int yrs;
-
- if (!capable(CAP_SYS_TIME))
- return -EPERM;
-
- if (copy_from_user(&rtc_tm, (struct rtc_time*)arg, sizeof(struct rtc_time)))
- return -EFAULT;
-
- yrs = rtc_tm.tm_year + 1900;
- mon = rtc_tm.tm_mon + 1; /* tm_mon starts at zero */
- day = rtc_tm.tm_mday;
- hrs = rtc_tm.tm_hour;
- min = rtc_tm.tm_min;
- sec = rtc_tm.tm_sec;
-
-
- if ((yrs < 1970) || (yrs > 2069))
- return -EINVAL;
-
- leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400));
-
- if ((mon > 12) || (day == 0))
- return -EINVAL;
-
- if (day > (days_in_mo[mon] + ((mon == 2) && leap_yr)))
- return -EINVAL;
-
- if ((hrs >= 24) || (min >= 60) || (sec >= 60))
- return -EINVAL;
-
- if (yrs >= 2000)
- yrs -= 2000; /* RTC (0, 1, ... 69) */
- else
- yrs -= 1900; /* RTC (70, 71, ... 99) */
-
- BIN_TO_BCD(sec);
- BIN_TO_BCD(min);
- BIN_TO_BCD(hrs);
- BIN_TO_BCD(day);
- BIN_TO_BCD(mon);
- BIN_TO_BCD(yrs);
-
- local_irq_save(flags);
- local_irq_disable();
- CMOS_WRITE(yrs, RTC_YEAR);
- CMOS_WRITE(mon, RTC_MONTH);
- CMOS_WRITE(day, RTC_DAY_OF_MONTH);
- CMOS_WRITE(hrs, RTC_HOURS);
- CMOS_WRITE(min, RTC_MINUTES);
- CMOS_WRITE(sec, RTC_SECONDS);
- local_irq_restore(flags);
-
- /* Notice that at this point, the RTC is updated but
- * the kernel is still running with the old time.
- * You need to set that separately with settimeofday
- * or adjtimex.
- */
- return 0;
- }
-
- case RTC_SET_CHARGE: /* set the RTC TRICKLE CHARGE register */
- {
- int tcs_val;
-
- if (!capable(CAP_SYS_TIME))
- return -EPERM;
-
- if(copy_from_user(&tcs_val, (int*)arg, sizeof(int)))
- return -EFAULT;
-
- tcs_val = RTC_TCR_PATTERN | (tcs_val & 0x0F);
- ds1302_writereg(RTC_TRICKLECHARGER, tcs_val);
- return 0;
- }
- default:
- return -EINVAL;
- }
-}
-
-int
-get_rtc_status(char *buf)
-{
- char *p;
- struct rtc_time tm;
-
- p = buf;
-
- get_rtc_time(&tm);
-
- /*
- * There is no way to tell if the luser has the RTC set for local
- * time or for Universal Standard Time (GMT). Probably local though.
- */
-
- p += sprintf(p,
- "rtc_time\t: %02d:%02d:%02d\n"
- "rtc_date\t: %04d-%02d-%02d\n",
- tm.tm_hour, tm.tm_min, tm.tm_sec,
- tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
-
- return p - buf;
-}
-
-
-/* The various file operations we support. */
-
-static struct file_operations rtc_fops = {
- .owner = THIS_MODULE,
- .ioctl = rtc_ioctl,
-};
-
-/* Probe for the chip by writing something to its RAM and try reading it back. */
-
-#define MAGIC_PATTERN 0x42
-
-static int __init
-ds1302_probe(void)
-{
- int retval, res, baur;
-
- baur=(boot_cpu_data.bus_clock/(2*1000*1000));
-
- printk("%s: Set PLD_RTCBAUR = %d\n", ds1302_name,baur);
-
- outw(0x0000,(unsigned long)PLD_RTCCR);
- outw(0x0000,(unsigned long)PLD_RTCRSTODT);
- outw(baur,(unsigned long)PLD_RTCBAUR);
-
- /* Try to talk to timekeeper. */
-
- ds1302_wenable();
- /* write RAM byte 0 */
- /* write something magic */
- out_byte_rtc(0xc0,MAGIC_PATTERN);
-
- /* read RAM byte 0 */
- if((res = in_byte_rtc(0xc1)) == MAGIC_PATTERN) {
- char buf[100];
- ds1302_wdisable();
- printk("%s: RTC found.\n", ds1302_name);
- get_rtc_status(buf);
- printk(buf);
- retval = 1;
- } else {
- printk("%s: RTC not found.\n", ds1302_name);
- retval = 0;
- }
-
- return retval;
-}
-
-
-/* Just probe for the RTC and register the device to handle the ioctl needed. */
-
-int __init
-ds1302_init(void)
-{
- if (!ds1302_probe()) {
- return -1;
- }
- return 0;
-}
-
-static int __init ds1302_register(void)
-{
- ds1302_init();
- if (register_chrdev(RTC_MAJOR_NR, ds1302_name, &rtc_fops)) {
- printk(KERN_INFO "%s: unable to get major %d for rtc\n",
- ds1302_name, RTC_MAJOR_NR);
- return -1;
- }
- return 0;
-}
-
-module_init(ds1302_register);
--
Hirokazu Takata <takata@xxxxxxxxxxxxxx>
Linux/M32R Project: http://www.linux-m32r.org/
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