X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Frtc%2Frx8025.c;h=b4a149b738089124a56dd778220577c346c8096e;hb=1a4596601fd395f3afb8f82f3f840c5e00bdd57a;hp=9122f12fc07a9056908d5aa39c1700651ca1b0a4;hpb=a4f762a994657151536360b22c8df8bd56ba82a3;p=platform%2Fkernel%2Fu-boot.git

diff --git a/drivers/rtc/rx8025.c b/drivers/rtc/rx8025.c
index 9122f12..b4a149b 100644
--- a/drivers/rtc/rx8025.c
+++ b/drivers/rtc/rx8025.c
@@ -2,23 +2,7 @@
  * (C) Copyright 2007
  * Matthias Fuchs, esd gmbh, matthias.fuchs@esd-electronics.com.
  *
- * 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
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
@@ -30,7 +14,7 @@
 #include <rtc.h>
 #include <i2c.h>
 
-#if defined(CONFIG_RTC_RX8025) && defined(CONFIG_CMD_DATE)
+#if defined(CONFIG_CMD_DATE)
 
 /*---------------------------------------------------------------------*/
 #undef DEBUG_RTC
@@ -42,8 +26,8 @@
 #endif
 /*---------------------------------------------------------------------*/
 
-#ifndef CFG_I2C_RTC_ADDR
-# define CFG_I2C_RTC_ADDR	0x32
+#ifndef CONFIG_SYS_I2C_RTC_ADDR
+# define CONFIG_SYS_I2C_RTC_ADDR	0x32
 #endif
 
 /*
@@ -90,18 +74,17 @@
 #define rtc_read(reg) buf[((reg) + 1) & 0xf]
 
 static void rtc_write (uchar reg, uchar val);
-static uchar bin2bcd (unsigned int n);
-static unsigned bcd2bin (uchar c);
 
 /*
  * Get the current time from the RTC
  */
-void rtc_get (struct rtc_time *tmp)
+int rtc_get (struct rtc_time *tmp)
 {
+	int rel = 0;
 	uchar sec, min, hour, mday, wday, mon, year, ctl2;
 	uchar buf[16];
 
-	if (i2c_read(CFG_I2C_RTC_ADDR, 0, 0, buf, 16))
+	if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, 16))
 		printf("Error reading from RTC\n");
 
 	sec = rtc_read(RTC_SEC_REG_ADDR);
@@ -118,18 +101,28 @@ void rtc_get (struct rtc_time *tmp)
 
 	/* dump status */
 	ctl2 = rtc_read(RTC_CTL2_REG_ADDR);
-	if (ctl2 & RTC_CTL2_BIT_PON)
+	if (ctl2 & RTC_CTL2_BIT_PON) {
 		printf("RTC: power-on detected\n");
+		rel = -1;
+	}
 
-	if (ctl2 & RTC_CTL2_BIT_VDET)
+	if (ctl2 & RTC_CTL2_BIT_VDET) {
 		printf("RTC: voltage drop detected\n");
+		rel = -1;
+	}
 
-	if (!(ctl2 & RTC_CTL2_BIT_XST))
+	if (!(ctl2 & RTC_CTL2_BIT_XST)) {
 		printf("RTC: oscillator stop detected\n");
+		rel = -1;
+	}
 
 	tmp->tm_sec  = bcd2bin (sec & 0x7F);
 	tmp->tm_min  = bcd2bin (min & 0x7F);
-	tmp->tm_hour = bcd2bin (hour & 0x3F);
+	if (rtc_read(RTC_CTL1_REG_ADDR) & RTC_CTL1_BIT_2412)
+		tmp->tm_hour = bcd2bin (hour & 0x3F);
+	else
+		tmp->tm_hour = bcd2bin (hour & 0x1F) % 12 +
+			       ((hour & 0x20) ? 12 : 0);
 	tmp->tm_mday = bcd2bin (mday & 0x3F);
 	tmp->tm_mon  = bcd2bin (mon & 0x1F);
 	tmp->tm_year = bcd2bin (year) + ( bcd2bin (year) >= 70 ? 1900 : 2000);
@@ -140,12 +133,14 @@ void rtc_get (struct rtc_time *tmp)
 	DEBUGR ("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;
 }
 
 /*
  * Set the RTC
  */
-void rtc_set (struct rtc_time *tmp)
+int rtc_set (struct rtc_time *tmp)
 {
 	DEBUGR ("Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
@@ -163,6 +158,8 @@ void rtc_set (struct rtc_time *tmp)
 	rtc_write (RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec));
 
 	rtc_write (RTC_CTL1_REG_ADDR, RTC_CTL1_BIT_2412);
+
+	return 0;
 }
 
 /*
@@ -174,7 +171,7 @@ void rtc_reset (void)
 	uchar buf[16];
 	uchar ctl2;
 
-	if (i2c_read(CFG_I2C_RTC_ADDR, 0,    0,   buf, 16))
+	if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0,    0,   buf, 16))
 		printf("Error reading from RTC\n");
 
 	ctl2 = rtc_read(RTC_CTL2_REG_ADDR);
@@ -206,19 +203,9 @@ static void rtc_write (uchar reg, uchar val)
 	uchar buf[2];
 	buf[0] = reg << 4;
 	buf[1] = val;
-	if (i2c_write(CFG_I2C_RTC_ADDR, 0, 0, buf, 2) != 0)
+	if (i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, 2) != 0)
 		printf("Error writing to RTC\n");
 
 }
 
-static unsigned bcd2bin (uchar n)
-{
-	return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F));
-}
-
-static unsigned char bin2bcd (unsigned int n)
-{
-	return (((n / 10) << 4) | (n % 10));
-}
-
 #endif /* CONFIG_RTC_RX8025 && CONFIG_CMD_DATE */