[MIPS] Remove unused time.c for swarm

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 0 insertions, 244 deletions

diff --git a/arch/mips/sibyte/swarm/time.c b/arch/mips/sibyte/swarm/time.c
deleted file mode 100644
index 97c73c793c35..000000000000
--- 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);
-        }
-}