patch-2.4.4 linux/arch/mips/mips-boards/atlas/atlas_rtc.c

• Lines: 59
• Date: Fri Apr 13 20:26:07 2001
• Orig file: v2.4.3/linux/arch/mips/mips-boards/atlas/atlas_rtc.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.3/linux/arch/mips/mips-boards/atlas/atlas_rtc.c linux/arch/mips/mips-boards/atlas/atlas_rtc.c
@@ -0,0 +1,58 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ * ########################################################################
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ *
+ * ########################################################################
+ *
+ * RTC routines for Atlas style attached Dallas chip.
+ *
+ */
+#include <linux/spinlock.h>
+#include <linux/mc146818rtc.h>
+#include <asm/mips-boards/atlas.h>
+
+
+static unsigned char atlas_rtc_read_data(unsigned long addr)
+{
+	volatile unsigned int *rtc_adr_reg = (void *)ATLAS_RTC_ADR_REG;
+	volatile unsigned int *rtc_dat_reg = (void *)ATLAS_RTC_DAT_REG;
+
+	*rtc_adr_reg = addr;
+
+	return *rtc_dat_reg;
+}
+
+static void atlas_rtc_write_data(unsigned char data, unsigned long addr)
+{
+	volatile unsigned int *rtc_adr_reg = (void *)ATLAS_RTC_ADR_REG;
+	volatile unsigned int *rtc_dat_reg = (void *)ATLAS_RTC_DAT_REG;
+
+	*rtc_adr_reg = addr;
+	*rtc_dat_reg = data;
+}
+
+static int atlas_rtc_bcd_mode(void)
+{
+	return 0;
+}
+
+struct rtc_ops atlas_rtc_ops = {
+	&atlas_rtc_read_data,
+	&atlas_rtc_write_data,
+	&atlas_rtc_bcd_mode
+};