Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 165 insertions, 0 deletions

diff --git a/arch/mips/jmr3927/common/rtc_ds1742.c b/arch/mips/jmr3927/common/rtc_ds1742.c
new file mode 100644
index 000000000000..1ae4318e1358
--- /dev/null
+++ b/arch/mips/jmr3927/common/rtc_ds1742.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ *              ahennessy@mvista.com
+ *
+ * arch/mips/jmr3927/common/rtc_ds1742.c
+ * Based on arch/mips/ddb5xxx/common/rtc_ds1386.c
+ *     low-level RTC hookups for s for Dallas 1742 chip.
+ *
+ * Copyright (C) 2000-2001 Toshiba 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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+/*
+ * This file exports a function, rtc_ds1386_init(), which expects an
+ * uncached base address as the argument.  It will set the two function
+ * pointers expected by the MIPS generic timer code.
+ */
+
+#include <linux/bcd.h>
+#include <linux/types.h>
+#include <linux/time.h>
+#include <linux/rtc.h>
+
+#include <asm/time.h>
+#include <asm/addrspace.h>
+
+#include <asm/jmr3927/ds1742rtc.h>
+#include <asm/debug.h>
+
+#define EPOCH           2000
+
+static unsigned long rtc_base;
+
+static unsigned long
+rtc_ds1742_get_time(void)
+{
+        unsigned int year, month, day, hour, minute, second;
+        unsigned int century;
+
+        CMOS_WRITE(RTC_READ, RTC_CONTROL);
+        second = BCD2BIN(CMOS_READ(RTC_SECONDS) & RTC_SECONDS_MASK);
+        minute = BCD2BIN(CMOS_READ(RTC_MINUTES));
+        hour = BCD2BIN(CMOS_READ(RTC_HOURS));
+        day = BCD2BIN(CMOS_READ(RTC_DATE));
+        month = BCD2BIN(CMOS_READ(RTC_MONTH));
+        year = BCD2BIN(CMOS_READ(RTC_YEAR));
+        century = BCD2BIN(CMOS_READ(RTC_CENTURY) & RTC_CENTURY_MASK);
+        CMOS_WRITE(0, RTC_CONTROL);
+
+        year += century * 100;
+
+        return mktime(year, month, day, hour, minute, second);
+}
+extern void to_tm(unsigned long tim, struct rtc_time * tm);
+
+static int
+rtc_ds1742_set_time(unsigned long t)
+{
+        struct rtc_time tm;
+        u8 year, month, day, hour, minute, second;
+        u8 cmos_year, cmos_month, cmos_day, cmos_hour, cmos_minute, cmos_second;
+        int cmos_century;
+
+        CMOS_WRITE(RTC_READ, RTC_CONTROL);
+        cmos_second = (u8)(CMOS_READ(RTC_SECONDS) & RTC_SECONDS_MASK);
+        cmos_minute = (u8)CMOS_READ(RTC_MINUTES);
+        cmos_hour = (u8)CMOS_READ(RTC_HOURS);
+        cmos_day = (u8)CMOS_READ(RTC_DATE);
+        cmos_month = (u8)CMOS_READ(RTC_MONTH);
+        cmos_year = (u8)CMOS_READ(RTC_YEAR);
+        cmos_century = CMOS_READ(RTC_CENTURY) & RTC_CENTURY_MASK;
+
+        CMOS_WRITE(RTC_WRITE, RTC_CONTROL);
+
+        /* convert */
+        to_tm(t, &tm);
+
+        /* check each field one by one */
+        year = BIN2BCD(tm.tm_year - EPOCH);
+        if (year != cmos_year) {
+                CMOS_WRITE(year,RTC_YEAR);
+        }
+
+        month = BIN2BCD(tm.tm_mon);
+        if (month != (cmos_month & 0x1f)) {
+                CMOS_WRITE((month & 0x1f) | (cmos_month & ~0x1f),RTC_MONTH);
+        }
+
+        day = BIN2BCD(tm.tm_mday);
+        if (day != cmos_day) {
+
+                CMOS_WRITE(day, RTC_DATE);
+        }
+
+        if (cmos_hour & 0x40) {
+                /* 12 hour format */
+                hour = 0x40;
+                if (tm.tm_hour > 12) {
+                        hour |= 0x20 | (BIN2BCD(hour-12) & 0x1f);
+                } else {
+                        hour |= BIN2BCD(tm.tm_hour);
+                }
+        } else {
+                /* 24 hour format */
+                hour = BIN2BCD(tm.tm_hour) & 0x3f;
+        }
+        if (hour != cmos_hour) CMOS_WRITE(hour, RTC_HOURS);
+
+        minute = BIN2BCD(tm.tm_min);
+        if (minute !=  cmos_minute) {
+                CMOS_WRITE(minute, RTC_MINUTES);
+        }
+
+        second = BIN2BCD(tm.tm_sec);
+        if (second !=  cmos_second) {
+                CMOS_WRITE(second & RTC_SECONDS_MASK,RTC_SECONDS);
+        }
+
+        /* RTC_CENTURY and RTC_CONTROL share same address... */
+        CMOS_WRITE(cmos_century, RTC_CONTROL);
+
+        return 0;
+}
+
+void
+rtc_ds1742_init(unsigned long base)
+{
+        u8  cmos_second;
+
+        /* remember the base */
+        rtc_base = base;
+        db_assert((rtc_base & 0xe0000000) == KSEG1);
+
+        /* set the function pointers */
+        rtc_get_time = rtc_ds1742_get_time;
+        rtc_set_time = rtc_ds1742_set_time;
+
+        /* clear oscillator stop bit */
+        CMOS_WRITE(RTC_READ, RTC_CONTROL);
+        cmos_second = (u8)(CMOS_READ(RTC_SECONDS) & RTC_SECONDS_MASK);
+        CMOS_WRITE(RTC_WRITE, RTC_CONTROL);
+        CMOS_WRITE(cmos_second, RTC_SECONDS); /* clear msb */
+        CMOS_WRITE(0, RTC_CONTROL);
+}