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-rw-r--r--drivers/rtc/Kconfig12
-rw-r--r--drivers/rtc/ds1307.c33
-rw-r--r--drivers/rtc/ds1374.c15
-rw-r--r--drivers/rtc/isl1208.c141
-rw-r--r--drivers/rtc/mx27rtc.c6
-rw-r--r--drivers/rtc/rs5c372.c24
-rw-r--r--drivers/rtc/rx8025.c18
7 files changed, 101 insertions, 148 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 95ac0312439..277dc3de737 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -30,6 +30,18 @@ config RTC_DS1307
Support for Dallas Semiconductor (now Maxim) DS1307 and DS1338/9 and
compatible Real Time Clock devices.
+config RTC_ISL1208
+ bool "Enable ISL1208 driver"
+ depends on DM_RTC
+ help
+ The Renesas (formerly Intersil) ISL1208 is a I2C Real Time Clock (RTC) and
+ calendar with automatic leap year correction, 2-byte battery backed SRAM,
+ automatic power switch-over, alarm function and 15 selectable frequency
+ outputs.
+
+ This driver supports reading and writing the RTC/calendar and detects
+ total power failures.
+
config RTC_RX8010SJ
bool "Enable RX8010SJ driver"
depends on DM_RTC
diff --git a/drivers/rtc/ds1307.c b/drivers/rtc/ds1307.c
index 5df15c7fd6c..5e74b93b72b 100644
--- a/drivers/rtc/ds1307.c
+++ b/drivers/rtc/ds1307.c
@@ -184,25 +184,8 @@ int rtc_set (struct rtc_time *tmp)
*/
void rtc_reset (void)
{
- struct rtc_time tmp;
-
rtc_write (RTC_SEC_REG_ADDR, 0x00); /* clearing Clock Halt */
rtc_write (RTC_CTL_REG_ADDR, RTC_CTL_BIT_SQWE | RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS0);
-
- tmp.tm_year = 1970;
- tmp.tm_mon = 1;
- tmp.tm_mday= 1;
- tmp.tm_hour = 0;
- tmp.tm_min = 0;
- tmp.tm_sec = 0;
-
- rtc_set(&tmp);
-
- printf ( "RTC: %4d-%02d-%02d %2d:%02d:%02d UTC\n",
- tmp.tm_year, tmp.tm_mon, tmp.tm_mday,
- tmp.tm_hour, tmp.tm_min, tmp.tm_sec);
-
- return;
}
@@ -321,14 +304,6 @@ read_rtc:
static int ds1307_rtc_reset(struct udevice *dev)
{
int ret;
- struct rtc_time tmp = {
- .tm_year = 1970,
- .tm_mon = 1,
- .tm_mday = 1,
- .tm_hour = 0,
- .tm_min = 0,
- .tm_sec = 0,
- };
/* clear Clock Halt */
ret = dm_i2c_reg_write(dev, RTC_SEC_REG_ADDR, 0x00);
@@ -340,14 +315,6 @@ static int ds1307_rtc_reset(struct udevice *dev)
if (ret < 0)
return ret;
- ret = ds1307_rtc_set(dev, &tmp);
- if (ret < 0)
- return ret;
-
- debug("RTC: %4d-%02d-%02d %2d:%02d:%02d UTC\n",
- tmp.tm_year, tmp.tm_mon, tmp.tm_mday,
- tmp.tm_hour, tmp.tm_min, tmp.tm_sec);
-
return 0;
}
diff --git a/drivers/rtc/ds1374.c b/drivers/rtc/ds1374.c
index 78473570b9d..9e440d84576 100644
--- a/drivers/rtc/ds1374.c
+++ b/drivers/rtc/ds1374.c
@@ -172,8 +172,6 @@ int rtc_set (struct rtc_time *tmp){
*/
void rtc_reset (void){
- struct rtc_time tmp;
-
/* clear status flags */
rtc_write(RTC_SR_ADDR, (RTC_SR_BIT_AF|RTC_SR_BIT_OSF), false); /* clearing OSF and AF */
@@ -189,19 +187,6 @@ void rtc_reset (void){
|RTC_CTL_BIT_BBSQW), true);/* disable WD/ALM, WDSTR set to INT-pin,
set BBSQW and SQW to 32k
- set to 1 */
- tmp.tm_year = 1970;
- tmp.tm_mon = 1;
- tmp.tm_mday= 1;
- tmp.tm_hour = 0;
- tmp.tm_min = 0;
- tmp.tm_sec = 0;
-
- rtc_set(&tmp);
-
- printf("RTC: %4d-%02d-%02d %2d:%02d:%02d UTC\n",
- tmp.tm_year, tmp.tm_mon, tmp.tm_mday,
- tmp.tm_hour, tmp.tm_min, tmp.tm_sec);
-
rtc_write(RTC_WD_ALM_CNT_BYTE2_ADDR, 0xAC, true);
rtc_write(RTC_WD_ALM_CNT_BYTE1_ADDR, 0xDE, true);
rtc_write(RTC_WD_ALM_CNT_BYTE2_ADDR, 0xAD, true);
diff --git a/drivers/rtc/isl1208.c b/drivers/rtc/isl1208.c
index 807e2e404e1..fa1178a36e9 100644
--- a/drivers/rtc/isl1208.c
+++ b/drivers/rtc/isl1208.c
@@ -14,6 +14,7 @@
#include <common.h>
#include <command.h>
+#include <dm.h>
#include <rtc.h>
#include <i2c.h>
@@ -51,45 +52,38 @@
#define RTC_STAT_BIT_BAT 0x02 /* BATTERY BIT */
#define RTC_STAT_BIT_RTCF 0x01 /* REAL TIME CLOCK FAIL BIT */
-static uchar rtc_read (uchar reg);
-static void rtc_write (uchar reg, uchar val);
-
/*
* Get the current time from the RTC
*/
-int rtc_get (struct rtc_time *tmp)
+static int isl1208_rtc_get(struct udevice *dev, struct rtc_time *tmp)
{
- int rel = 0;
- uchar sec, min, hour, mday, wday, mon, year, status;
-
- status = rtc_read (RTC_STAT_REG_ADDR);
- sec = rtc_read (RTC_SEC_REG_ADDR);
- min = rtc_read (RTC_MIN_REG_ADDR);
- hour = rtc_read (RTC_HR_REG_ADDR);
- wday = rtc_read (RTC_DAY_REG_ADDR);
- mday = rtc_read (RTC_DATE_REG_ADDR);
- mon = rtc_read (RTC_MON_REG_ADDR);
- year = rtc_read (RTC_YR_REG_ADDR);
-
- DEBUGR ("Get RTC year: %02x mon: %02x mday: %02x wday: %02x "
- "hr: %02x min: %02x sec: %02x status: %02x\n",
- year, mon, mday, wday, hour, min, sec, status);
-
- if (status & RTC_STAT_BIT_RTCF) {
+ int ret;
+ uchar buf[8], val;
+
+ ret = dm_i2c_read(dev, 0, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ if (buf[RTC_STAT_REG_ADDR] & RTC_STAT_BIT_RTCF) {
printf ("### Warning: RTC oscillator has stopped\n");
- rtc_write(RTC_STAT_REG_ADDR,
- rtc_read(RTC_STAT_REG_ADDR) &~ (RTC_STAT_BIT_BAT|RTC_STAT_BIT_RTCF));
- rel = -1;
+ ret = dm_i2c_read(dev, RTC_STAT_REG_ADDR, &val, sizeof(val));
+ if (ret < 0)
+ return ret;
+
+ val = val & ~(RTC_STAT_BIT_BAT | RTC_STAT_BIT_RTCF);
+ ret = dm_i2c_write(dev, RTC_STAT_REG_ADDR, &val, sizeof(val));
+ if (ret < 0)
+ return ret;
}
- 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)+2000;
- tmp->tm_wday = bcd2bin (wday & 0x07);
+ tmp->tm_sec = bcd2bin(buf[RTC_SEC_REG_ADDR] & 0x7F);
+ tmp->tm_min = bcd2bin(buf[RTC_MIN_REG_ADDR] & 0x7F);
+ tmp->tm_hour = bcd2bin(buf[RTC_HR_REG_ADDR] & 0x3F);
+ tmp->tm_mday = bcd2bin(buf[RTC_DATE_REG_ADDR] & 0x3F);
+ tmp->tm_mon = bcd2bin(buf[RTC_MON_REG_ADDR] & 0x1F);
+ tmp->tm_year = bcd2bin(buf[RTC_YR_REG_ADDR]) + 2000;
+ tmp->tm_wday = bcd2bin(buf[RTC_DAY_REG_ADDR] & 0x07);
tmp->tm_yday = 0;
tmp->tm_isdst= 0;
@@ -97,51 +91,88 @@ int rtc_get (struct rtc_time *tmp)
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
- return rel;
+ return 0;
}
/*
* Set the RTC
*/
-int rtc_set (struct rtc_time *tmp)
+static int isl1208_rtc_set(struct udevice *dev, const struct rtc_time *tmp)
{
+ int ret;
+ uchar val, buf[7];
+
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,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+ if (tmp->tm_year < 2000 || tmp->tm_year > 2099)
+ printf("WARNING: year should be between 2000 and 2099!\n");
+
/* enable write */
- rtc_write(RTC_STAT_REG_ADDR,
- rtc_read(RTC_STAT_REG_ADDR) | RTC_STAT_BIT_WRTC);
+ ret = dm_i2c_read(dev, RTC_STAT_REG_ADDR, &val, sizeof(val));
+ if (ret < 0)
+ return ret;
+
+ val = val | RTC_STAT_BIT_WRTC;
+
+ ret = dm_i2c_write(dev, RTC_STAT_REG_ADDR, &val, sizeof(val));
+ if (ret < 0)
+ return ret;
+
+ buf[RTC_YR_REG_ADDR] = bin2bcd(tmp->tm_year % 100);
+ buf[RTC_MON_REG_ADDR] = bin2bcd(tmp->tm_mon);
+ buf[RTC_DAY_REG_ADDR] = bin2bcd(tmp->tm_wday);
+ buf[RTC_DATE_REG_ADDR] = bin2bcd(tmp->tm_mday);
+ buf[RTC_HR_REG_ADDR] = bin2bcd(tmp->tm_hour) | 0x80; /* 24h clock */
+ buf[RTC_MIN_REG_ADDR] = bin2bcd(tmp->tm_min);
+ buf[RTC_SEC_REG_ADDR] = bin2bcd(tmp->tm_sec);
- rtc_write (RTC_YR_REG_ADDR, bin2bcd (tmp->tm_year % 100));
- rtc_write (RTC_MON_REG_ADDR, bin2bcd (tmp->tm_mon));
- rtc_write (RTC_DAY_REG_ADDR, bin2bcd (tmp->tm_wday));
- rtc_write (RTC_DATE_REG_ADDR, bin2bcd (tmp->tm_mday));
- rtc_write (RTC_HR_REG_ADDR, bin2bcd (tmp->tm_hour) | 0x80 ); /* 24h clock */
- rtc_write (RTC_MIN_REG_ADDR, bin2bcd (tmp->tm_min));
- rtc_write (RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec));
+ ret = dm_i2c_write(dev, 0, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
/* disable write */
- rtc_write(RTC_STAT_REG_ADDR,
- rtc_read(RTC_STAT_REG_ADDR) & ~RTC_STAT_BIT_WRTC);
+ ret = dm_i2c_read(dev, RTC_STAT_REG_ADDR, &val, sizeof(val));
+ if (ret < 0)
+ return ret;
+
+ val = val & ~RTC_STAT_BIT_WRTC;
+ ret = dm_i2c_write(dev, RTC_STAT_REG_ADDR, &val, sizeof(val));
+ if (ret < 0)
+ return ret;
return 0;
}
-void rtc_reset (void)
+static int isl1208_rtc_reset(struct udevice *dev)
{
+ return 0;
}
-/*
- * Helper functions
- */
-
-static uchar rtc_read (uchar reg)
+static int isl1208_probe(struct udevice *dev)
{
- return (i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, reg));
-}
+ i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS |
+ DM_I2C_CHIP_WR_ADDRESS);
-static void rtc_write (uchar reg, uchar val)
-{
- i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val);
+ return 0;
}
+
+static const struct rtc_ops isl1208_rtc_ops = {
+ .get = isl1208_rtc_get,
+ .set = isl1208_rtc_set,
+ .reset = isl1208_rtc_reset,
+};
+
+static const struct udevice_id isl1208_rtc_ids[] = {
+ { .compatible = "isil,isl1208" },
+ { }
+};
+
+U_BOOT_DRIVER(rtc_isl1208) = {
+ .name = "rtc-isl1208",
+ .id = UCLASS_RTC,
+ .probe = isl1208_probe,
+ .of_match = isl1208_rtc_ids,
+ .ops = &isl1208_rtc_ops,
+};
diff --git a/drivers/rtc/mx27rtc.c b/drivers/rtc/mx27rtc.c
index 29ccdf17301..b42770e05bd 100644
--- a/drivers/rtc/mx27rtc.c
+++ b/drivers/rtc/mx27rtc.c
@@ -61,9 +61,5 @@ int rtc_set(struct rtc_time *time)
void rtc_reset(void)
{
- struct rtc_regs *rtc_regs = (struct rtc_regs *)IMX_RTC_BASE;
-
- writel(0, &rtc_regs->dayr);
- writel(0, &rtc_regs->hourmin);
- writel(0, &rtc_regs->seconds);
+ /* nothing to do */
}
diff --git a/drivers/rtc/rs5c372.c b/drivers/rtc/rs5c372.c
index 65f45ea5e3c..c815c915d5c 100644
--- a/drivers/rtc/rs5c372.c
+++ b/drivers/rtc/rs5c372.c
@@ -247,35 +247,13 @@ int rtc_set (struct rtc_time *tmp)
}
/*
- * Reset the RTC. We set the date back to 1970-01-01.
+ * Reset the RTC.
*/
void
rtc_reset (void)
{
- struct rtc_time tmp;
-
if (!setup_done)
rs5c372_enable();
-
- if (!setup_done)
- return;
-
- tmp.tm_year = 1970;
- tmp.tm_mon = 1;
- /* Jan. 1, 1970 was a Thursday */
- tmp.tm_wday= 4;
- tmp.tm_mday= 1;
- tmp.tm_hour = 0;
- tmp.tm_min = 0;
- tmp.tm_sec = 0;
-
- rtc_set(&tmp);
-
- printf ("RTC: %4d-%02d-%02d %2d:%02d:%02d UTC\n",
- tmp.tm_year, tmp.tm_mon, tmp.tm_mday,
- tmp.tm_hour, tmp.tm_min, tmp.tm_sec);
-
- return;
}
#endif
diff --git a/drivers/rtc/rx8025.c b/drivers/rtc/rx8025.c
index b4a149b7380..c43966a50d7 100644
--- a/drivers/rtc/rx8025.c
+++ b/drivers/rtc/rx8025.c
@@ -163,11 +163,10 @@ int rtc_set (struct rtc_time *tmp)
}
/*
- * Reset the RTC. We setting the date back to 1970-01-01.
+ * Reset the RTC
*/
void rtc_reset (void)
{
- struct rtc_time tmp;
uchar buf[16];
uchar ctl2;
@@ -178,21 +177,6 @@ void rtc_reset (void)
ctl2 &= ~(RTC_CTL2_BIT_PON | RTC_CTL2_BIT_VDET);
ctl2 |= RTC_CTL2_BIT_XST | RTC_CTL2_BIT_VDSL;
rtc_write (RTC_CTL2_REG_ADDR, ctl2);
-
- tmp.tm_year = 1970;
- tmp.tm_mon = 1;
- tmp.tm_mday= 1;
- tmp.tm_hour = 0;
- tmp.tm_min = 0;
- tmp.tm_sec = 0;
-
- rtc_set(&tmp);
-
- printf ( "RTC: %4d-%02d-%02d %2d:%02d:%02d UTC\n",
- tmp.tm_year, tmp.tm_mon, tmp.tm_mday,
- tmp.tm_hour, tmp.tm_min, tmp.tm_sec);
-
- return;
}
/*
generated by cgit v1.2.3 (git 2.0.4) at 2025-08-02 12:38:48 +0000