* (C) Copyright 2002
* Andrew May, Viasat Inc, amay@viasat.com
*
- * 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_M41T60) && defined(CFG_I2C_RTC_ADDR) && \
- defined(CONFIG_CMD_DATE)
-
-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));
-}
+#if defined(CONFIG_SYS_I2C_RTC_ADDR) && defined(CONFIG_CMD_DATE)
/*
* Convert between century and "century bits" (CB1 and CB0). These routines
{
uchar data[8];
- if (i2c_read(CFG_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {
+ if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {
printf("I2C read failed in rtc_dump()\n");
return;
}
uchar min, date, month, years;
rtc_dump("begin validate");
- if (i2c_read(CFG_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {
+ if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {
printf("I2C read failed in rtc_validate()\n");
return 0;
}
if (0x00 != (data[RTC_CTRL] & 0x80)) {
printf("M41T60 RTC clock lost power.\n");
data[RTC_SEC] = 0x80;
- if (i2c_write(CFG_I2C_RTC_ADDR, RTC_SEC, 1, data, 1)) {
+ if (i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_SEC, 1, data, 1)) {
printf("I2C write failed in rtc_validate()\n");
return 0;
}
data[RTC_YEAR] = 0x00;
data[RTC_CTRL] &= 0x7F; /* reset OUT bit */
- if (i2c_write(CFG_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {
+ if (i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {
printf("I2C write failed in rtc_validate()\n");
return 0;
}
return data;
}
-void rtc_get(struct rtc_time *tmp)
+int rtc_get(struct rtc_time *tmp)
{
uchar const *const data = rtc_validate();
if (!data)
- return;
+ return -1;
tmp->tm_sec = bcd2bin(data[RTC_SEC] & 0x7F);
tmp->tm_min = bcd2bin(data[RTC_MIN] & 0x7F);
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 0;
}
-void rtc_set(struct rtc_time *tmp)
+int rtc_set(struct rtc_time *tmp)
{
uchar *const data = rtc_validate();
if (!data)
- return;
+ return -1;
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,
data[RTC_YEAR] = bin2bcd(tmp->tm_year % 100);
data[RTC_MONTH] |= year2cb(tmp->tm_year) << 6;
data[RTC_DAY] = bin2bcd(tmp->tm_wday + 1) & 0x07;
- if (i2c_write(CFG_I2C_RTC_ADDR, 0, 1, data, RTC_REG_CNT)) {
+ if (i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, data, RTC_REG_CNT)) {
printf("I2C write failed in rtc_set()\n");
- return;
+ return -1;
}
+
+ return 0;
}
void rtc_reset(void)
if (l <= 0x3F) {
if ((data[RTC_CTRL] & 0x3F) != l) {
- printf("Setting RTC calibration to 0x%02X\n",
+ printf("Setting RTC calibration to 0x%02lX\n",
l);
data[RTC_CTRL] &= 0xC0;
data[RTC_CTRL] |= (uchar) l;
* Turn off frequency test.
*/
data[RTC_CTRL] &= 0xBF;
- if (i2c_write(CFG_I2C_RTC_ADDR, RTC_CTRL, 1, data + RTC_CTRL, 1)) {
+ if (i2c_write(CONFIG_SYS_I2C_RTC_ADDR, RTC_CTRL, 1, data + RTC_CTRL, 1)) {
printf("I2C write failed in rtc_reset()\n");
return;
}
rtc_dump("end reset");
}
-#endif /* CONFIG_RTC_M41T60 && CFG_I2C_RTC_ADDR && CONFIG_CMD_DATE */
+#endif /* CONFIG_RTC_M41T60 && CONFIG_SYS_I2C_RTC_ADDR && CONFIG_CMD_DATE */