X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fdrivers%2Frtc%2Fpcf8563.c;fp=qemu%2Froms%2Fu-boot%2Fdrivers%2Frtc%2Fpcf8563.c;h=25fa7c5b118eb2383dc246f3ab364db493260beb;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/roms/u-boot/drivers/rtc/pcf8563.c b/qemu/roms/u-boot/drivers/rtc/pcf8563.c
new file mode 100644
index 000000000..25fa7c5b1
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/rtc/pcf8563.c
@@ -0,0 +1,122 @@
+/*
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * Date & Time support for Philips PCF8563 RTC
+ */
+
+/* #define	DEBUG	*/
+
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+#include <i2c.h>
+
+#if defined(CONFIG_CMD_DATE)
+
+static uchar rtc_read  (uchar reg);
+static void  rtc_write (uchar reg, uchar val);
+
+/* ------------------------------------------------------------------------- */
+
+int rtc_get (struct rtc_time *tmp)
+{
+	int rel = 0;
+	uchar sec, min, hour, mday, wday, mon_cent, year;
+
+	sec	= rtc_read (0x02);
+	min	= rtc_read (0x03);
+	hour	= rtc_read (0x04);
+	mday	= rtc_read (0x05);
+	wday	= rtc_read (0x06);
+	mon_cent= rtc_read (0x07);
+	year	= rtc_read (0x08);
+
+	debug ( "Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
+		"hr: %02x min: %02x sec: %02x\n",
+		year, mon_cent, mday, wday,
+		hour, min, sec );
+	debug ( "Alarms: wday: %02x day: %02x hour: %02x min: %02x\n",
+		rtc_read (0x0C),
+		rtc_read (0x0B),
+		rtc_read (0x0A),
+		rtc_read (0x09) );
+
+	if (sec & 0x80) {
+		puts ("### Warning: RTC Low Voltage - date/time not reliable\n");
+		rel = -1;
+	}
+
+	tmp->tm_sec  = bcd2bin (sec  & 0x7F);
+	tmp->tm_min  = bcd2bin (min  & 0x7F);
+	tmp->tm_hour = bcd2bin (hour & 0x3F);
+	tmp->tm_mday = bcd2bin (mday & 0x3F);
+	tmp->tm_mon  = bcd2bin (mon_cent & 0x1F);
+	tmp->tm_year = bcd2bin (year) + ((mon_cent & 0x80) ? 1900 : 2000);
+	tmp->tm_wday = bcd2bin (wday & 0x07);
+	tmp->tm_yday = 0;
+	tmp->tm_isdst= 0;
+
+	debug ( "Get 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);
+
+	return rel;
+}
+
+int rtc_set (struct rtc_time *tmp)
+{
+	uchar century;
+
+	debug ( "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);
+
+	rtc_write (0x08, bin2bcd(tmp->tm_year % 100));
+
+	century = (tmp->tm_year >= 2000) ? 0 : 0x80;
+	rtc_write (0x07, bin2bcd(tmp->tm_mon) | century);
+
+	rtc_write (0x06, bin2bcd(tmp->tm_wday));
+	rtc_write (0x05, bin2bcd(tmp->tm_mday));
+	rtc_write (0x04, bin2bcd(tmp->tm_hour));
+	rtc_write (0x03, bin2bcd(tmp->tm_min ));
+	rtc_write (0x02, bin2bcd(tmp->tm_sec ));
+
+	return 0;
+}
+
+void rtc_reset (void)
+{
+	/* clear all control & status registers */
+	rtc_write (0x00, 0x00);
+	rtc_write (0x01, 0x00);
+	rtc_write (0x0D, 0x00);
+
+	/* clear Voltage Low bit */
+	rtc_write (0x02, rtc_read (0x02) & 0x7F);
+
+	/* reset all alarms */
+	rtc_write (0x09, 0x00);
+	rtc_write (0x0A, 0x00);
+	rtc_write (0x0B, 0x00);
+	rtc_write (0x0C, 0x00);
+}
+
+/* ------------------------------------------------------------------------- */
+
+static uchar rtc_read (uchar reg)
+{
+	return (i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, reg));
+}
+
+static void rtc_write (uchar reg, uchar val)
+{
+	i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val);
+}
+
+#endif