ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/uboot/drivers/rtc/s3c24x0_rtc.c b/marvell/uboot/drivers/rtc/s3c24x0_rtc.c
new file mode 100644
index 0000000..187620a
--- /dev/null
+++ b/marvell/uboot/drivers/rtc/s3c24x0_rtc.c
@@ -0,0 +1,154 @@
+/*
+ * (C) Copyright 2003
+ * David Müller ELSOFT AG Switzerland. d.mueller@elsoft.ch
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * Date & Time support for the built-in Samsung S3C24X0 RTC
+ */
+
+#include <common.h>
+#include <command.h>
+
+#if (defined(CONFIG_CMD_DATE))
+
+#include <asm/arch/s3c24x0_cpu.h>
+
+#include <rtc.h>
+#include <asm/io.h>
+#include <linux/compiler.h>
+
+typedef enum {
+ RTC_ENABLE,
+ RTC_DISABLE
+} RTC_ACCESS;
+
+
+static inline void SetRTC_Access(RTC_ACCESS a)
+{
+ struct s3c24x0_rtc *rtc = s3c24x0_get_base_rtc();
+
+ switch (a) {
+ case RTC_ENABLE:
+ writeb(readb(&rtc->rtccon) | 0x01, &rtc->rtccon);
+ break;
+
+ case RTC_DISABLE:
+ writeb(readb(&rtc->rtccon) & ~0x01, &rtc->rtccon);
+ break;
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+int rtc_get(struct rtc_time *tmp)
+{
+ struct s3c24x0_rtc *rtc = s3c24x0_get_base_rtc();
+ uchar sec, min, hour, mday, wday, mon, year;
+ __maybe_unused uchar a_sec, a_min, a_hour, a_date,
+ a_mon, a_year, a_armed;
+
+ /* enable access to RTC registers */
+ SetRTC_Access(RTC_ENABLE);
+
+ /* read RTC registers */
+ do {
+ sec = readb(&rtc->bcdsec);
+ min = readb(&rtc->bcdmin);
+ hour = readb(&rtc->bcdhour);
+ mday = readb(&rtc->bcddate);
+ wday = readb(&rtc->bcdday);
+ mon = readb(&rtc->bcdmon);
+ year = readb(&rtc->bcdyear);
+ } while (sec != readb(&rtc->bcdsec));
+
+ /* read ALARM registers */
+ a_sec = readb(&rtc->almsec);
+ a_min = readb(&rtc->almmin);
+ a_hour = readb(&rtc->almhour);
+ a_date = readb(&rtc->almdate);
+ a_mon = readb(&rtc->almmon);
+ a_year = readb(&rtc->almyear);
+ a_armed = readb(&rtc->rtcalm);
+
+ /* disable access to RTC registers */
+ SetRTC_Access(RTC_DISABLE);
+
+#ifdef RTC_DEBUG
+ printf("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
+ "hr: %02x min: %02x sec: %02x\n",
+ year, mon, mday, wday, hour, min, sec);
+ printf("Alarms: %02x: year: %02x month: %02x date: %02x hour: "
+ "%02x min: %02x sec: %02x\n",
+ a_armed, a_year, a_mon, a_date, a_hour, a_min, a_sec);
+#endif
+
+ 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 & 0x1F);
+ tmp->tm_year = bcd2bin(year);
+ tmp->tm_wday = bcd2bin(wday & 0x07);
+ if (tmp->tm_year < 70)
+ tmp->tm_year += 2000;
+ else
+ tmp->tm_year += 1900;
+ tmp->tm_yday = 0;
+ tmp->tm_isdst = 0;
+#ifdef RTC_DEBUG
+ printf("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);
+#endif
+
+ return 0;
+}
+
+int rtc_set(struct rtc_time *tmp)
+{
+ struct s3c24x0_rtc *rtc = s3c24x0_get_base_rtc();
+ uchar sec, min, hour, mday, wday, mon, year;
+
+#ifdef RTC_DEBUG
+ printf("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);
+#endif
+ year = bin2bcd(tmp->tm_year % 100);
+ mon = bin2bcd(tmp->tm_mon);
+ wday = bin2bcd(tmp->tm_wday);
+ mday = bin2bcd(tmp->tm_mday);
+ hour = bin2bcd(tmp->tm_hour);
+ min = bin2bcd(tmp->tm_min);
+ sec = bin2bcd(tmp->tm_sec);
+
+ /* enable access to RTC registers */
+ SetRTC_Access(RTC_ENABLE);
+
+ /* write RTC registers */
+ writeb(sec, &rtc->bcdsec);
+ writeb(min, &rtc->bcdmin);
+ writeb(hour, &rtc->bcdhour);
+ writeb(mday, &rtc->bcddate);
+ writeb(wday, &rtc->bcdday);
+ writeb(mon, &rtc->bcdmon);
+ writeb(year, &rtc->bcdyear);
+
+ /* disable access to RTC registers */
+ SetRTC_Access(RTC_DISABLE);
+
+ return 0;
+}
+
+void rtc_reset(void)
+{
+ struct s3c24x0_rtc *rtc = s3c24x0_get_base_rtc();
+
+ writeb((readb(&rtc->rtccon) & ~0x06) | 0x08, &rtc->rtccon);
+ writeb(readb(&rtc->rtccon) & ~(0x08 | 0x01), &rtc->rtccon);
+}
+
+#endif