rtc: Make mc13783-rtc driver generic

Rename mc13783-rtc so that it can be used for both MC13783 and MC13892 PMICs.

efikamx board, for example, does use a MC13892 PMIC, but the RTC selection is currently made as:

#define CONFIG_RTC_MC13783

,which is not very obvious.

Let the MC13783 and MC13892 RTC be selected by:

#define CONFIG_RTC_MC13XXX

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>

1 files changed, 79 insertions, 0 deletions

diff --git a/drivers/rtc/mc13xxx-rtc.c b/drivers/rtc/mc13xxx-rtc.c
new file mode 100644
index 0000000..70ea8a1
--- /dev/null
+++ b/drivers/rtc/mc13xxx-rtc.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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
+ */
+
+#include <common.h>
+#include <rtc.h>
+#include <spi.h>
+#include <pmic.h>
+#include <fsl_pmic.h>
+
+int rtc_get(struct rtc_time *rtc)
+{
+	u32 day1, day2, time;
+	int tim, i = 0;
+	struct pmic *p = get_pmic();
+	int ret;
+
+	do {
+		ret = pmic_reg_read(p, REG_RTC_DAY, &day1);
+		if (ret < 0)
+			return -1;
+
+		ret = pmic_reg_read(p, REG_RTC_TIME, &time);
+		if (ret < 0)
+			return -1;
+
+		ret = pmic_reg_read(p, REG_RTC_DAY, &day2);
+		if (ret < 0)
+			return -1;
+
+	} while (day1 != day2 && i++ < 3);
+
+	tim = day1 * 86400 + time;
+
+	to_tm(tim, rtc);
+
+	rtc->tm_yday = 0;
+	rtc->tm_isdst = 0;
+
+	return 0;
+}
+
+int rtc_set(struct rtc_time *rtc)
+{
+	u32 time, day;
+	struct pmic *p = get_pmic();
+
+	time = mktime(rtc->tm_year, rtc->tm_mon, rtc->tm_mday,
+		      rtc->tm_hour, rtc->tm_min, rtc->tm_sec);
+	day = time / 86400;
+	time %= 86400;
+
+	pmic_reg_write(p, REG_RTC_DAY, day);
+	pmic_reg_write(p, REG_RTC_TIME, time);
+
+	return 0;
+}
+
+void rtc_reset(void)
+{
+}