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[PATCH 2/5] Remove unused time.c for swarm

To: linux-mips@linux-mips.org
Subject: [PATCH 2/5] Remove unused time.c for swarm
From: Franck Bui-Huu <vagabon.xyz@gmail.com>
Date: Thu, 14 Jun 2007 12:19:58 +0200
Cc: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
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From: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>

---
 arch/mips/sibyte/swarm/time.c |  244 -----------------------------------------
 1 files changed, 0 insertions(+), 244 deletions(-)
 delete mode 100644 arch/mips/sibyte/swarm/time.c

diff --git a/arch/mips/sibyte/swarm/time.c b/arch/mips/sibyte/swarm/time.c
deleted file mode 100644
index 97c73c7..0000000
--- a/arch/mips/sibyte/swarm/time.c
+++ /dev/null
@@ -1,244 +0,0 @@
-/*
- * Copyright (C) 2000, 2001 Broadcom Corporation
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- */
-
-/*
- * Time routines for the swarm board.  We pass all the hard stuff
- * through to the sb1250 handling code.  Only thing we really keep
- * track of here is what time of day we think it is.  And we don't
- * really even do a good job of that...
- */
-
-
-#include <linux/bcd.h>
-#include <linux/init.h>
-#include <linux/time.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include <asm/system.h>
-#include <asm/addrspace.h>
-#include <asm/io.h>
-
-#include <asm/sibyte/sb1250.h>
-#include <asm/sibyte/sb1250_regs.h>
-#include <asm/sibyte/sb1250_smbus.h>
-
-static unsigned long long sec_bias = 0;
-static unsigned int usec_bias = 0;
-
-/* Xicor 1241 definitions */
-
-/*
- * Register bits
- */
-
-#define X1241REG_SR_BAT        0x80            /* currently on battery power */
-#define X1241REG_SR_RWEL 0x04          /* r/w latch is enabled, can write RTC 
*/
-#define X1241REG_SR_WEL 0x02           /* r/w latch is unlocked, can enable 
r/w now */
-#define X1241REG_SR_RTCF 0x01          /* clock failed */
-#define X1241REG_BL_BP2 0x80           /* block protect 2 */
-#define X1241REG_BL_BP1 0x40           /* block protect 1 */
-#define X1241REG_BL_BP0 0x20           /* block protect 0 */
-#define X1241REG_BL_WD1        0x10
-#define X1241REG_BL_WD0        0x08
-#define X1241REG_HR_MIL 0x80           /* military time format */
-
-/*
- * Register numbers
- */
-
-#define X1241REG_BL    0x10            /* block protect bits */
-#define X1241REG_INT   0x11            /*  */
-#define X1241REG_SC    0x30            /* Seconds */
-#define X1241REG_MN    0x31            /* Minutes */
-#define X1241REG_HR    0x32            /* Hours */
-#define X1241REG_DT    0x33            /* Day of month */
-#define X1241REG_MO    0x34            /* Month */
-#define X1241REG_YR    0x35            /* Year */
-#define X1241REG_DW    0x36            /* Day of Week */
-#define X1241REG_Y2K   0x37            /* Year 2K */
-#define X1241REG_SR    0x3F            /* Status register */
-
-#define X1241_CCR_ADDRESS      0x6F
-
-#define SMB_CSR(reg) (IOADDR(A_SMB_REGISTER(1, reg)))
-
-static int xicor_read(uint8_t addr)
-{
-        while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
-                ;
-
-       __raw_writeq((addr >> 8) & 0x7, SMB_CSR(R_SMB_CMD));
-       __raw_writeq(addr & 0xff, SMB_CSR(R_SMB_DATA));
-       __raw_writeq(V_SMB_ADDR(X1241_CCR_ADDRESS) | V_SMB_TT_WR2BYTE,
-                    SMB_CSR(R_SMB_START));
-
-        while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
-                ;
-
-       __raw_writeq(V_SMB_ADDR(X1241_CCR_ADDRESS) | V_SMB_TT_RD1BYTE,
-                    SMB_CSR(R_SMB_START));
-
-        while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
-                ;
-
-        if (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_ERROR) {
-                /* Clear error bit by writing a 1 */
-                __raw_writeq(M_SMB_ERROR, SMB_CSR(R_SMB_STATUS));
-                return -1;
-        }
-
-       return (__raw_readq(SMB_CSR(R_SMB_DATA)) & 0xff);
-}
-
-static int xicor_write(uint8_t addr, int b)
-{
-        while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
-                ;
-
-       __raw_writeq(addr, SMB_CSR(R_SMB_CMD));
-       __raw_writeq((addr & 0xff) | ((b & 0xff) << 8), SMB_CSR(R_SMB_DATA));
-       __raw_writeq(V_SMB_ADDR(X1241_CCR_ADDRESS) | V_SMB_TT_WR3BYTE,
-                    SMB_CSR(R_SMB_START));
-
-        while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
-                ;
-
-        if (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_ERROR) {
-                /* Clear error bit by writing a 1 */
-                __raw_writeq(M_SMB_ERROR, SMB_CSR(R_SMB_STATUS));
-                return -1;
-        } else {
-               return 0;
-       }
-}
-
-/*
- * In order to set the CMOS clock precisely, set_rtc_mmss has to be
- * called 500 ms after the second nowtime has started, because when
- * nowtime is written into the registers of the CMOS clock, it will
- * jump to the next second precisely 500 ms later. Check the Motorola
- * MC146818A or Dallas DS12887 data sheet for details.
- *
- * BUG: This routine does not handle hour overflow properly; it just
- *      sets the minutes. Usually you'll only notice that after reboot!
- */
-int set_rtc_mmss(unsigned long nowtime)
-{
-       int retval = 0;
-       int real_seconds, real_minutes, cmos_minutes;
-
-       cmos_minutes = xicor_read(X1241REG_MN);
-       cmos_minutes = BCD2BIN(cmos_minutes);
-
-       /*
-        * since we're only adjusting minutes and seconds,
-        * don't interfere with hour overflow. This avoids
-        * messing with unknown time zones but requires your
-        * RTC not to be off by more than 15 minutes
-        */
-       real_seconds = nowtime % 60;
-       real_minutes = nowtime / 60;
-       if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1)
-               real_minutes += 30;             /* correct for half hour time 
zone */
-       real_minutes %= 60;
-
-       /* unlock writes to the CCR */
-       xicor_write(X1241REG_SR, X1241REG_SR_WEL);
-       xicor_write(X1241REG_SR, X1241REG_SR_WEL | X1241REG_SR_RWEL);
-
-       if (abs(real_minutes - cmos_minutes) < 30) {
-               real_seconds = BIN2BCD(real_seconds);
-               real_minutes = BIN2BCD(real_minutes);
-               xicor_write(X1241REG_SC, real_seconds);
-               xicor_write(X1241REG_MN, real_minutes);
-       } else {
-               printk(KERN_WARNING
-                      "set_rtc_mmss: can't update from %d to %d\n",
-                      cmos_minutes, real_minutes);
-               retval = -1;
-       }
-
-       xicor_write(X1241REG_SR, 0);
-
-       printk("set_rtc_mmss: %02d:%02d\n", real_minutes, real_seconds);
-
-       return retval;
-}
-
-static unsigned long __init get_swarm_time(void)
-{
-       unsigned int year, mon, day, hour, min, sec, y2k;
-
-       sec = xicor_read(X1241REG_SC);
-       min = xicor_read(X1241REG_MN);
-       hour = xicor_read(X1241REG_HR);
-
-       if (hour & X1241REG_HR_MIL) {
-               hour &= 0x3f;
-       } else {
-               if (hour & 0x20)
-                       hour = (hour & 0xf) + 0x12;
-       }
-
-       sec = BCD2BIN(sec);
-       min = BCD2BIN(min);
-       hour = BCD2BIN(hour);
-
-       day = xicor_read(X1241REG_DT);
-       mon = xicor_read(X1241REG_MO);
-       year = xicor_read(X1241REG_YR);
-       y2k = xicor_read(X1241REG_Y2K);
-
-       day = BCD2BIN(day);
-       mon = BCD2BIN(mon);
-       year = BCD2BIN(year);
-       y2k = BCD2BIN(y2k);
-
-       year += (y2k * 100);
-
-       return mktime(year, mon, day, hour, min, sec);
-}
-
-/*
- *  Bring up the timer at 100 Hz.
- */
-void __init swarm_time_init(void)
-{
-       unsigned int flags;
-       int status;
-
-       /* Set up the scd general purpose timer 0 to cpu 0 */
-       sb1250_time_init();
-
-       /* Establish communication with the Xicor 1241 RTC */
-       /* XXXKW how do I share the SMBus with the I2C subsystem? */
-
-       __raw_writeq(K_SMB_FREQ_400KHZ, SMB_CSR(R_SMB_FREQ));
-       __raw_writeq(0, SMB_CSR(R_SMB_CONTROL));
-
-       if ((status = xicor_read(X1241REG_SR_RTCF)) < 0) {
-               printk("x1241: couldn't detect on SWARM SMBus 1\n");
-       } else {
-               if (status & X1241REG_SR_RTCF)
-                       printk("x1241: battery failed -- time is probably 
wrong\n");
-               write_seqlock_irqsave(&xtime_lock, flags);
-               xtime.tv_sec = get_swarm_time();
-               xtime.tv_nsec = 0;
-               write_sequnlock_irqrestore(&xtime_lock, flags);
-       }
-}
-- 
1.5.2.1


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