* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
- *
- * 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
*/
#include <common.h>
#include <rtc.h>
#include <i2c.h>
-#if defined(CONFIG_RTC_RS5C372A) && defined(CONFIG_CMD_DATE)
+#if defined(CONFIG_CMD_DATE)
/*
* Reads are always done starting with register 15, which requires some
* jumping-through-hoops to access the data correctly.
#define rtc_debug 0 /* gcc will remove all the debug code for us */
#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
#define RS5C372_RAM_SIZE 0x10
#define HOURS_24(n) bcd2bin((n) & 0x3F)
-static uchar bin2bcd (unsigned int n);
-static unsigned bcd2bin (uchar c);
-
static int setup_done = 0;
static int
{
int ret;
- ret = i2c_read(CFG_I2C_RTC_ADDR, 0, 0, buf, len);
+ ret = i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, len);
if (ret != 0) {
printf("%s: failed to read\n", __FUNCTION__);
return ret;
buf[14] = 0; /* reg. 13 */
buf[15] = 0; /* reg. 14 */
buf[16] = USE_24HOUR_MODE; /* reg. 15 */
- ret = i2c_write(CFG_I2C_RTC_ADDR, 0, 0, buf, RS5C372_RAM_SIZE+1);
+ ret = i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, RS5C372_RAM_SIZE+1);
if (ret != 0) {
printf("%s: failed\n", __FUNCTION__);
return;
/*
* Get the current time from the RTC
*/
-void
+int
rtc_get (struct rtc_time *tmp)
{
unsigned char buf[RS5C372_RAM_SIZE];
rs5c372_enable();
if (!setup_done)
- return;
+ return -1;
memset(buf, 0, sizeof(buf));
ret = rs5c372_readram(buf, RS5C372_RAM_SIZE);
if (ret != 0) {
printf("%s: failed\n", __FUNCTION__);
- return;
+ return -1;
}
rs5c372_convert_to_time(tmp, buf);
- return;
+ return 0;
}
/*
* Set the RTC
*/
-void
-rtc_set (struct rtc_time *tmp)
+int rtc_set (struct rtc_time *tmp)
{
unsigned char buf[8], reg15;
int ret;
rs5c372_enable();
if (!setup_done)
- return;
+ return -1;
if(rtc_debug > 2) {
printf("rtc_set: tm_year = %d\n", tmp->tm_year);
memset(buf, 0, sizeof(buf));
/* only read register 15 */
- ret = i2c_read(CFG_I2C_RTC_ADDR, 0, 0, buf, 1);
+ ret = i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, 1);
if (ret == 0) {
/* need to save register 15 */
printf("WARNING: year should be between 1970 and 2069!\n");
buf[7] = bin2bcd(tmp->tm_year % 100);
- ret = i2c_write(CFG_I2C_RTC_ADDR, 0, 0, buf, 8);
- if (ret != 0)
+ ret = i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 0, buf, 8);
+ if (ret != 0) {
printf("rs5c372_set_datetime(), i2c_master_send() returned %d\n",ret);
+ return -1;
+ }
+ } else {
+ return -1;
}
- return;
+ return 0;
}
/*
return;
}
-static unsigned int
-bcd2bin (unsigned char n)
-{
- return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F));
-}
-
-static unsigned char
-bin2bcd (unsigned int n)
-{
- return (((n / 10) << 4) | (n % 10));
-}
#endif