This patch adds support for Faraday Technology RTC IP - FTRTC
Signed-off-by: Po-Yu Chuang <ratbert at faraday-tech.com>
---
diff -ruN u-boot-2009.03/drivers/rtc/ftrtc.c
FA5A320LINUX26_u-boot/drivers/rtc/ftrtc.c
--- u-boot-2009.03/drivers/rtc/ftrtc.c 1970-01-01 08:00:00.000000000 +0800
+++ FA5A320LINUX26_u-boot/drivers/rtc/ftrtc.c 2009-03-31 16:28:40.000000000
+0800
@@ -0,0 +1,110 @@
+/*
+ * Faraday FTRTC Real Time Clock
+ *
+ * (C) Copyright 2009 Faraday Technology
+ * Po-Yu Chuang <ratb...@faraday-tech.com>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#undef DEBUG
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+#include <rtc.h>
+#include "ftrtc.h"
+
+static unsigned int rtc = CONFIG_SYS_RTC_BASE;
+
+static void
+ftrtc_enable(void)
+{
+ outl(FTRTC_CR_ENABLE, rtc + FTRTC_OFFSET_CR);
+}
+
+/*
+ * return current time in seconds
+ */
+static unsigned long
+ftrtc_time(void)
+{
+ unsigned long day;
+ unsigned long hour;
+ unsigned long minute;
+ unsigned long second;
+ unsigned long second2;
+
+ do {
+ second = inl(rtc + FTRTC_OFFSET_SEC);
+ day = inl(rtc + FTRTC_OFFSET_DAY);
+ hour = inl(rtc + FTRTC_OFFSET_HOUR);
+ minute = inl(rtc + FTRTC_OFFSET_MIN);
+ second2 = inl(rtc + FTRTC_OFFSET_SEC);
+ } while (second != second2);
+
+ return day * 24 * 60 * 60 + hour * 60 * 60 + minute * 60 + second;
+}
+
+/*
+ * Get the current time from the RTC
+ */
+
+int
+rtc_get(struct rtc_time *tmp)
+{
+ unsigned long now;
+
+ debug("rtc_get(): record register: %x\n", inl(rtc +
FTRTC_OFFSET_RECORD));
+
+ now = ftrtc_time() + inl(rtc + FTRTC_OFFSET_RECORD);
+
+ to_tm(now, tmp);
+
+ return 0;
+}
+
+/*
+ * Set the RTC
+ */
+int
+rtc_set(struct rtc_time *tmp)
+{
+ unsigned long new;
+ unsigned long now;
+
+ debug("rtc_set(): DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
+ tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
+ tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+
+ new = mktime(tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_hour,
+ tmp->tm_min, tmp->tm_sec);
+
+ now = ftrtc_time();
+
+ debug("rtc_set(): write %x to record register\n", new - now);
+
+ outl(new - now, rtc + FTRTC_OFFSET_RECORD);
+
+ return 0;
+}
+
+void
+rtc_reset(void)
+{
+ debug("rtc_reset()\n");
+ ftrtc_enable();
+}
+
diff -ruN u-boot-2009.03/drivers/rtc/ftrtc.h
FA5A320LINUX26_u-boot/drivers/rtc/ftrtc.h
--- u-boot-2009.03/drivers/rtc/ftrtc.h 1970-01-01 08:00:00.000000000 +0800
+++ FA5A320LINUX26_u-boot/drivers/rtc/ftrtc.h 2009-03-31 15:19:32.000000000
+0800
@@ -0,0 +1,44 @@
+/*
+ * Faraday FTRTC Real Time Clock
+ *
+ * (C) Copyright 2009 Faraday Technology
+ * Po-Yu Chuang <ratb...@faraday-tech.com>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __FTRTC_H
+#define __FTRTC_H
+
+#define FTRTC_OFFSET_SEC 0x00
+#define FTRTC_OFFSET_MIN 0x04
+#define FTRTC_OFFSET_HOUR 0x08
+#define FTRTC_OFFSET_DAY 0x0c
+#define FTRTC_OFFSET_ALRM_SEC 0x10
+#define FTRTC_OFFSET_ALRM_MIN 0x14
+#define FTRTC_OFFSET_ALRM_HOUR 0x18
+#define FTRTC_OFFSET_RECORD 0x1c
+#define FTRTC_OFFSET_CR 0x20
+
+/*
+ * RTC Control Register
+ */
+#define FTRTC_CR_ENABLE (1 << 0)
+#define FTRTC_CR_INTERRUPT_SEC (1 << 1) /* enable interrupt per
second */
+#define FTRTC_CR_INTERRUPT_MIN (1 << 2) /* enable interrupt per
minute */
+#define FTRTC_CR_INTERRUPT_HR (1 << 3) /* enable interrupt per
hour */
+#define FTRTC_CR_INTERRUPT_DAY (1 << 4) /* enable interrupt per
day */
+
+#endif /* __FTRTC_H */
diff -ruN u-boot-2009.03/drivers/rtc/Makefile
FA5A320LINUX26_u-boot/drivers/rtc/Makefile
--- u-boot-2009.03/drivers/rtc/Makefile 2009-03-22 05:04:41.000000000 +0800
+++ FA5A320LINUX26_u-boot/drivers/rtc/Makefile 2009-03-25 10:29:04.000000000
+0800
@@ -40,6 +40,7 @@
COBJS-$(CONFIG_RTC_DS164x) += ds164x.o
COBJS-$(CONFIG_RTC_DS174x) += ds174x.o
COBJS-$(CONFIG_RTC_DS3231) += ds3231.o
+COBJS-$(CONFIG_RTC_FTRTC) += ftrtc.o
COBJS-$(CONFIG_RTC_ISL1208) += isl1208.o
COBJS-$(CONFIG_RTC_M41T11) += m41t11.o
COBJS-$(CONFIG_RTC_M41T60) += m41t60.o
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