/*
- * (C) Copyright 2001, 2002
+ * (C) Copyright 2001-2008
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
* Keith Outwater, keith_outwater@mvis.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+
*/
/*
#include <rtc.h>
#include <i2c.h>
-#if defined(CONFIG_RTC_DS1337) && defined(CONFIG_CMD_DATE)
-
-/*---------------------------------------------------------------------*/
-#undef DEBUG_RTC
-
-#ifdef DEBUG_RTC
-#define DEBUGR(fmt,args...) printf(fmt ,##args)
-#else
-#define DEBUGR(fmt,args...)
-#endif
-/*---------------------------------------------------------------------*/
+#if defined(CONFIG_CMD_DATE)
/*
* RTC register addresses
*/
+#if defined CONFIG_RTC_DS1337
#define RTC_SEC_REG_ADDR 0x0
#define RTC_MIN_REG_ADDR 0x1
#define RTC_HR_REG_ADDR 0x2
#define RTC_YR_REG_ADDR 0x6
#define RTC_CTL_REG_ADDR 0x0e
#define RTC_STAT_REG_ADDR 0x0f
+#define RTC_TC_REG_ADDR 0x10
+#elif defined CONFIG_RTC_DS1388
+#define RTC_SEC_REG_ADDR 0x1
+#define RTC_MIN_REG_ADDR 0x2
+#define RTC_HR_REG_ADDR 0x3
+#define RTC_DAY_REG_ADDR 0x4
+#define RTC_DATE_REG_ADDR 0x5
+#define RTC_MON_REG_ADDR 0x6
+#define RTC_YR_REG_ADDR 0x7
+#define RTC_CTL_REG_ADDR 0x0c
+#define RTC_STAT_REG_ADDR 0x0b
+#define RTC_TC_REG_ADDR 0x0a
+#endif
/*
* RTC control register bits
*/
-#define RTC_CTL_BIT_A1IE 0x1 /* Alarm 1 interrupt enable */
-#define RTC_CTL_BIT_A2IE 0x2 /* Alarm 2 interrupt enable */
-#define RTC_CTL_BIT_INTCN 0x4 /* Interrupt control */
-#define RTC_CTL_BIT_RS1 0x8 /* Rate select 1 */
-#define RTC_CTL_BIT_RS2 0x10 /* Rate select 2 */
-#define RTC_CTL_BIT_DOSC 0x80 /* Disable Oscillator */
+#define RTC_CTL_BIT_A1IE 0x1 /* Alarm 1 interrupt enable */
+#define RTC_CTL_BIT_A2IE 0x2 /* Alarm 2 interrupt enable */
+#define RTC_CTL_BIT_INTCN 0x4 /* Interrupt control */
+#define RTC_CTL_BIT_RS1 0x8 /* Rate select 1 */
+#define RTC_CTL_BIT_RS2 0x10 /* Rate select 2 */
+#define RTC_CTL_BIT_DOSC 0x80 /* Disable Oscillator */
/*
* RTC status register bits
*/
-#define RTC_STAT_BIT_A1F 0x1 /* Alarm 1 flag */
-#define RTC_STAT_BIT_A2F 0x2 /* Alarm 2 flag */
-#define RTC_STAT_BIT_OSF 0x80 /* Oscillator stop flag */
+#define RTC_STAT_BIT_A1F 0x1 /* Alarm 1 flag */
+#define RTC_STAT_BIT_A2F 0x2 /* Alarm 2 flag */
+#define RTC_STAT_BIT_OSF 0x80 /* Oscillator stop flag */
static uchar rtc_read (uchar reg);
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
mon_cent = rtc_read (RTC_MON_REG_ADDR);
year = rtc_read (RTC_YR_REG_ADDR);
- DEBUGR ("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
+ /* No century bit, assume year 2000 */
+#ifdef CONFIG_RTC_DS1388
+ mon_cent |= 0x80;
+#endif
+
+ debug("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
"hr: %02x min: %02x sec: %02x control: %02x status: %02x\n",
year, mon_cent, mday, wday, hour, min, sec, control, status);
tmp->tm_yday = 0;
tmp->tm_isdst= 0;
- DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
+ 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);
/*
* Set the RTC
*/
-void rtc_set (struct rtc_time *tmp)
+int rtc_set (struct rtc_time *tmp)
{
uchar century;
- DEBUGR ("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
+ 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 (RTC_HR_REG_ADDR, bin2bcd (tmp->tm_hour));
rtc_write (RTC_MIN_REG_ADDR, bin2bcd (tmp->tm_min));
rtc_write (RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec));
+
+ return 0;
}
* SQW/INTB* pin and program it for 32,768 Hz output. Note that
* according to the datasheet, turning on the square wave output
* increases the current drain on the backup battery from about
- * 600 nA to 2uA. Define CFG_RTC_DS1337_NOOSC if you wish to turn
+ * 600 nA to 2uA. Define CONFIG_SYS_RTC_DS1337_NOOSC if you wish to turn
* off the OSC output.
*/
-#ifdef CFG_RTC_DS1337_NOOSC
+
+#ifdef CONFIG_SYS_RTC_DS1337_NOOSC
#define RTC_DS1337_RESET_VAL \
- (RTC_CTL_BIT_INTCN | RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2)
+ (RTC_CTL_BIT_INTCN | RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2)
#else
#define RTC_DS1337_RESET_VAL (RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2)
#endif
void rtc_reset (void)
{
+#ifdef CONFIG_SYS_RTC_DS1337
rtc_write (RTC_CTL_REG_ADDR, RTC_DS1337_RESET_VAL);
+#elif defined CONFIG_SYS_RTC_DS1388
+ rtc_write(RTC_CTL_REG_ADDR, 0x0); /* hw default */
+#endif
+#ifdef CONFIG_SYS_DS1339_TCR_VAL
+ rtc_write (RTC_TC_REG_ADDR, CONFIG_SYS_DS1339_TCR_VAL);
+#endif
+#ifdef CONFIG_SYS_DS1388_TCR_VAL
+ rtc_write(RTC_TC_REG_ADDR, CONFIG_SYS_DS1388_TCR_VAL);
+#endif
}
static
uchar rtc_read (uchar reg)
{
- return (i2c_reg_read (CFG_I2C_RTC_ADDR, reg));
+ return (i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, reg));
}
static void rtc_write (uchar reg, uchar val)
{
- i2c_reg_write (CFG_I2C_RTC_ADDR, reg, val);
-}
-
-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));
+ i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val);
}
#endif
projects / karo-tx-uboot.git / blobdiff