Messages in this thread Patch in this message | | | Date | Wed, 06 Oct 2004 11:29:42 +0900 (JST) | Subject | [PATCH 2.6.9-rc3-mm2 2/5] [m32r] Remove arch/m32r/drivers/ds1302.c | From | Hirokazu Takata <> |
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[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@linux-m32r.org> ---
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@linux-m32r.org> Linux/M32R Project: http://www.linux-m32r.org/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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