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u-boot/drivers/rtc/ds1337.c

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0+
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/*
Coding style cleanup. Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-03-26 14:38:47 +00:00
* (C) Copyright 2001-2008
rtc: ds1337: Add driver model support Add support of driver model of ds1337 Signed-off-by: Biwen Li <biwen.li@nxp.com> Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
2020-05-01 12:03:56 +00:00
* Copyright 2020 NXP
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
* Keith Outwater, keith_outwater@mvis.com`
*/
/*
* Date & Time support (no alarms) for Dallas Semiconductor (now Maxim)
* DS1337 Real Time Clock (RTC).
*/
#include <common.h>
#include <command.h>
rtc: ds1337: Add driver model support Add support of driver model of ds1337 Signed-off-by: Biwen Li <biwen.li@nxp.com> Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
2020-05-01 12:03:56 +00:00
#include <dm.h>
common: Drop log.h from common header Move this header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-10 17:40:05 +00:00
#include <log.h>
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#include <rtc.h>
#include <i2c.h>
/*
* RTC register addresses
*/
Add support for DS1388. Support for DS1388 is added by extending the DS1337 driver. DS1388 is similar to DS1337. The time registers are offset by 1 (due to support for hundreds of seconds), and there is no century bit. The configuration and trickle charge registers are also different. Tested on hardware with Freescale P2010 and DS1388. Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com>
2012-07-12 19:59:44 +00:00
#if defined CONFIG_RTC_DS1337
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#define RTC_SEC_REG_ADDR 0x0
#define RTC_MIN_REG_ADDR 0x1
#define RTC_HR_REG_ADDR 0x2
#define RTC_DAY_REG_ADDR 0x3
#define RTC_DATE_REG_ADDR 0x4
#define RTC_MON_REG_ADDR 0x5
#define RTC_YR_REG_ADDR 0x6
#define RTC_CTL_REG_ADDR 0x0e
#define RTC_STAT_REG_ADDR 0x0f
rtc/ds1337.c: Allow to set TCR register This is needed to correctly start the charging of an attached capacitor or battery. Signed-off-by: Werner Pfister <werner.pfister@intercontrol.de> Signed-off-by: Detlev Zundel <dzu@denx.de>
2009-09-21 12:49:55 +00:00
#define RTC_TC_REG_ADDR 0x10
Add support for DS1388. Support for DS1388 is added by extending the DS1337 driver. DS1388 is similar to DS1337. The time registers are offset by 1 (due to support for hundreds of seconds), and there is no century bit. The configuration and trickle charge registers are also different. Tested on hardware with Freescale P2010 and DS1388. Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com>
2012-07-12 19:59:44 +00:00
#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
Initial revision
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/*
* RTC control register bits
*/
Coding style cleanup. Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-03-26 14:38:47 +00:00
#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 */
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/*
* RTC status register bits
*/
Coding style cleanup. Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-03-26 14:38:47 +00:00
#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 */
Initial revision
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rtc: ds1337: Add driver model support Add support of driver model of ds1337 Signed-off-by: Biwen Li <biwen.li@nxp.com> Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
2020-05-01 12:03:56 +00:00
#if !CONFIG_IS_ENABLED(DM_RTC)
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static uchar rtc_read (uchar reg);
static void rtc_write (uchar reg, uchar val);
/*
* Get the current time from the RTC
*/
LWMON5: POST RTC fix Modify the RTC API to provide one a status for the time reported by the rtc_get() function: 0 - a reliable time is guaranteed, < 0 - a reliable time isn't guaranteed (power fault, clock issues, and so on). The RTC chip drivers are responsible for providing this info if the corresponding chip supports such functionality. If not - always report that the time is reliable. The POST RTC test was modified to detect the RTC faults utilizing this new rtc_get() feature. Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
2008-03-20 14:56:04 +00:00
int rtc_get (struct rtc_time *tmp)
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{
LWMON5: POST RTC fix Modify the RTC API to provide one a status for the time reported by the rtc_get() function: 0 - a reliable time is guaranteed, < 0 - a reliable time isn't guaranteed (power fault, clock issues, and so on). The RTC chip drivers are responsible for providing this info if the corresponding chip supports such functionality. If not - always report that the time is reliable. The POST RTC test was modified to detect the RTC faults utilizing this new rtc_get() feature. Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
2008-03-20 14:56:04 +00:00
int rel = 0;
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uchar sec, min, hour, mday, wday, mon_cent, year, control, status;
control = rtc_read (RTC_CTL_REG_ADDR);
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_cent = rtc_read (RTC_MON_REG_ADDR);
year = rtc_read (RTC_YR_REG_ADDR);
Add support for DS1388. Support for DS1388 is added by extending the DS1337 driver. DS1388 is similar to DS1337. The time registers are offset by 1 (due to support for hundreds of seconds), and there is no century bit. The configuration and trickle charge registers are also different. Tested on hardware with Freescale P2010 and DS1388. Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com>
2012-07-12 19:59:44 +00:00
/* No century bit, assume year 2000 */
#ifdef CONFIG_RTC_DS1388
mon_cent |= 0x80;
#endif
drivers/rtc/ds1337.c: fix GCC 4.6 build warnings Fix: ds1337.c: In function 'rtc_get': ds1337.c:88:52: warning: variable 'control' set but not used [-Wunused-but-set-variable] Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-10-29 09:39:11 +00:00
debug("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
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"hr: %02x min: %02x sec: %02x control: %02x status: %02x\n",
year, mon_cent, mday, wday, hour, min, sec, control, status);
if (status & RTC_STAT_BIT_OSF) {
printf ("### Warning: RTC oscillator has stopped\n");
/* clear the OSF flag */
rtc_write (RTC_STAT_REG_ADDR,
rtc_read (RTC_STAT_REG_ADDR) & ~RTC_STAT_BIT_OSF);
LWMON5: POST RTC fix Modify the RTC API to provide one a status for the time reported by the rtc_get() function: 0 - a reliable time is guaranteed, < 0 - a reliable time isn't guaranteed (power fault, clock issues, and so on). The RTC chip drivers are responsible for providing this info if the corresponding chip supports such functionality. If not - always report that the time is reliable. The POST RTC test was modified to detect the RTC faults utilizing this new rtc_get() feature. Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
2008-03-20 14:56:04 +00:00
rel = -1;
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}
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_cent & 0x1F);
tmp->tm_year = bcd2bin (year) + ((mon_cent & 0x80) ? 2000 : 1900);
tmp->tm_wday = bcd2bin ((wday - 1) & 0x07);
tmp->tm_yday = 0;
tmp->tm_isdst= 0;
drivers/rtc/ds1337.c: fix GCC 4.6 build warnings Fix: ds1337.c: In function 'rtc_get': ds1337.c:88:52: warning: variable 'control' set but not used [-Wunused-but-set-variable] Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-10-29 09:39:11 +00:00
debug("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
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tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
LWMON5: POST RTC fix Modify the RTC API to provide one a status for the time reported by the rtc_get() function: 0 - a reliable time is guaranteed, < 0 - a reliable time isn't guaranteed (power fault, clock issues, and so on). The RTC chip drivers are responsible for providing this info if the corresponding chip supports such functionality. If not - always report that the time is reliable. The POST RTC test was modified to detect the RTC faults utilizing this new rtc_get() feature. Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
2008-03-20 14:56:04 +00:00
return rel;
Initial revision
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}
/*
* Set the RTC
*/
rtc: allow rtc_set to return an error and use it in cmd_date Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-09-01 21:06:23 +00:00
int rtc_set (struct rtc_time *tmp)
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{
uchar century;
drivers/rtc/ds1337.c: fix GCC 4.6 build warnings Fix: ds1337.c: In function 'rtc_get': ds1337.c:88:52: warning: variable 'control' set but not used [-Wunused-but-set-variable] Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-10-29 09:39:11 +00:00
debug("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
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tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
rtc_write (RTC_YR_REG_ADDR, bin2bcd (tmp->tm_year % 100));
century = (tmp->tm_year >= 2000) ? 0x80 : 0;
rtc_write (RTC_MON_REG_ADDR, bin2bcd (tmp->tm_mon) | century);
rtc_write (RTC_DAY_REG_ADDR, bin2bcd (tmp->tm_wday + 1));
rtc_write (RTC_DATE_REG_ADDR, bin2bcd (tmp->tm_mday));
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));
rtc: allow rtc_set to return an error and use it in cmd_date Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-09-01 21:06:23 +00:00
return 0;
Initial revision
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}
/*
* Reset the RTC. We also enable the oscillator output on the
* 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
rtc: ds1337: drop "SYS" from config variables There is some inconsistency between uses of CONFIG_RTC_DS13xx and CONFIG_SYS_RTC_DS13xx. Address this by dropping the "SYS" from these variables. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-30 00:03:33 +00:00
* 600 nA to 2uA. Define CONFIG_RTC_DS1337_NOOSC if you wish to turn
Add CFG_RTC_DS1337_NOOSC to turn off OSC output The default settings for RTC DS1337 keeps the OSC output, 32,768 Hz, on. This add CFG_RTC_DS1337_NOOSC to turn it off. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2008-03-26 12:02:13 +00:00
* off the OSC output.
Initial revision
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*/
Add support for DS1388. Support for DS1388 is added by extending the DS1337 driver. DS1388 is similar to DS1337. The time registers are offset by 1 (due to support for hundreds of seconds), and there is no century bit. The configuration and trickle charge registers are also different. Tested on hardware with Freescale P2010 and DS1388. Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com>
2012-07-12 19:59:44 +00:00
rtc: ds1337: drop "SYS" from config variables There is some inconsistency between uses of CONFIG_RTC_DS13xx and CONFIG_SYS_RTC_DS13xx. Address this by dropping the "SYS" from these variables. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-30 00:03:33 +00:00
#ifdef CONFIG_RTC_DS1337_NOOSC
Add CFG_RTC_DS1337_NOOSC to turn off OSC output The default settings for RTC DS1337 keeps the OSC output, 32,768 Hz, on. This add CFG_RTC_DS1337_NOOSC to turn it off. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2008-03-26 12:02:13 +00:00
#define RTC_DS1337_RESET_VAL \
Coding style cleanup. Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-03-26 14:38:47 +00:00
(RTC_CTL_BIT_INTCN | RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2)
Add CFG_RTC_DS1337_NOOSC to turn off OSC output The default settings for RTC DS1337 keeps the OSC output, 32,768 Hz, on. This add CFG_RTC_DS1337_NOOSC to turn it off. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2008-03-26 12:02:13 +00:00
#else
#define RTC_DS1337_RESET_VAL (RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2)
#endif
Initial revision
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void rtc_reset (void)
{
rtc: ds1337: drop "SYS" from config variables There is some inconsistency between uses of CONFIG_RTC_DS13xx and CONFIG_SYS_RTC_DS13xx. Address this by dropping the "SYS" from these variables. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-30 00:03:33 +00:00
#ifdef CONFIG_RTC_DS1337
Add CFG_RTC_DS1337_NOOSC to turn off OSC output The default settings for RTC DS1337 keeps the OSC output, 32,768 Hz, on. This add CFG_RTC_DS1337_NOOSC to turn it off. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2008-03-26 12:02:13 +00:00
rtc_write (RTC_CTL_REG_ADDR, RTC_DS1337_RESET_VAL);
rtc: ds1337: drop "SYS" from config variables There is some inconsistency between uses of CONFIG_RTC_DS13xx and CONFIG_SYS_RTC_DS13xx. Address this by dropping the "SYS" from these variables. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-30 00:03:33 +00:00
#elif defined CONFIG_RTC_DS1388
Add support for DS1388. Support for DS1388 is added by extending the DS1337 driver. DS1388 is similar to DS1337. The time registers are offset by 1 (due to support for hundreds of seconds), and there is no century bit. The configuration and trickle charge registers are also different. Tested on hardware with Freescale P2010 and DS1388. Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com>
2012-07-12 19:59:44 +00:00
rtc_write(RTC_CTL_REG_ADDR, 0x0); /* hw default */
#endif
rtc: ds1337: drop "SYS" from config variables There is some inconsistency between uses of CONFIG_RTC_DS13xx and CONFIG_SYS_RTC_DS13xx. Address this by dropping the "SYS" from these variables. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-30 00:03:33 +00:00
#ifdef CONFIG_RTC_DS1339_TCR_VAL
rtc_write (RTC_TC_REG_ADDR, CONFIG_RTC_DS1339_TCR_VAL);
rtc/ds1337.c: Allow to set TCR register This is needed to correctly start the charging of an attached capacitor or battery. Signed-off-by: Werner Pfister <werner.pfister@intercontrol.de> Signed-off-by: Detlev Zundel <dzu@denx.de>
2009-09-21 12:49:55 +00:00
#endif
rtc: ds1337: drop "SYS" from config variables There is some inconsistency between uses of CONFIG_RTC_DS13xx and CONFIG_SYS_RTC_DS13xx. Address this by dropping the "SYS" from these variables. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-30 00:03:33 +00:00
#ifdef CONFIG_RTC_DS1388_TCR_VAL
rtc_write(RTC_TC_REG_ADDR, CONFIG_RTC_DS1388_TCR_VAL);
Add support for DS1388. Support for DS1388 is added by extending the DS1337 driver. DS1388 is similar to DS1337. The time registers are offset by 1 (due to support for hundreds of seconds), and there is no century bit. The configuration and trickle charge registers are also different. Tested on hardware with Freescale P2010 and DS1388. Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com>
2012-07-12 19:59:44 +00:00
#endif
Initial revision
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}
/*
* Helper functions
*/
static
uchar rtc_read (uchar reg)
{
rename CFG_ macros to CONFIG_SYS Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-16 13:01:15 +00:00
return (i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, reg));
Initial revision
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}
static void rtc_write (uchar reg, uchar val)
{
rename CFG_ macros to CONFIG_SYS Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-16 13:01:15 +00:00
i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, reg, val);
Initial revision
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}
rtc: ds1337: Add driver model support Add support of driver model of ds1337 Signed-off-by: Biwen Li <biwen.li@nxp.com> Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
2020-05-01 12:03:56 +00:00
#else
static uchar rtc_read(struct udevice *dev, uchar reg)
{
return dm_i2c_reg_read(dev, reg);
}
static void rtc_write(struct udevice *dev, uchar reg, uchar val)
{
dm_i2c_reg_write(dev, reg, val);
}
static int ds1337_rtc_get(struct udevice *dev, struct rtc_time *tmp)
{
int rel = 0;
uchar sec, min, hour, mday, wday, mon_cent, year, control, status;
control = rtc_read(dev, RTC_CTL_REG_ADDR);
status = rtc_read(dev, RTC_STAT_REG_ADDR);
sec = rtc_read(dev, RTC_SEC_REG_ADDR);
min = rtc_read(dev, RTC_MIN_REG_ADDR);
hour = rtc_read(dev, RTC_HR_REG_ADDR);
wday = rtc_read(dev, RTC_DAY_REG_ADDR);
mday = rtc_read(dev, RTC_DATE_REG_ADDR);
mon_cent = rtc_read(dev, RTC_MON_REG_ADDR);
year = rtc_read(dev, RTC_YR_REG_ADDR);
/* 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\n",
year, mon_cent, mday, wday);
debug("hr: %02x min: %02x sec: %02x control: %02x status: %02x\n",
hour, min, sec, control, status);
if (status & RTC_STAT_BIT_OSF) {
printf("### Warning: RTC oscillator has stopped\n");
/* clear the OSF flag */
rtc_write(dev, RTC_STAT_REG_ADDR,
rtc_read(dev, RTC_STAT_REG_ADDR) & ~RTC_STAT_BIT_OSF);
rel = -1;
}
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_cent & 0x1F);
tmp->tm_year = bcd2bin(year) + ((mon_cent & 0x80) ? 2000 : 1900);
tmp->tm_wday = bcd2bin((wday - 1) & 0x07);
tmp->tm_yday = 0;
tmp->tm_isdst = 0;
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 rel;
}
static int ds1337_rtc_set(struct udevice *dev, const struct rtc_time *tmp)
{
uchar century;
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(dev, RTC_YR_REG_ADDR, bin2bcd(tmp->tm_year % 100));
century = (tmp->tm_year >= 2000) ? 0x80 : 0;
rtc_write(dev, RTC_MON_REG_ADDR, bin2bcd(tmp->tm_mon) | century);
rtc_write(dev, RTC_DAY_REG_ADDR, bin2bcd(tmp->tm_wday + 1));
rtc_write(dev, RTC_DATE_REG_ADDR, bin2bcd(tmp->tm_mday));
rtc_write(dev, RTC_HR_REG_ADDR, bin2bcd(tmp->tm_hour));
rtc_write(dev, RTC_MIN_REG_ADDR, bin2bcd(tmp->tm_min));
rtc_write(dev, RTC_SEC_REG_ADDR, bin2bcd(tmp->tm_sec));
return 0;
}
#ifdef CONFIG_RTC_DS1337_NOOSC
#define RTC_DS1337_RESET_VAL \
(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
static int ds1337_rtc_reset(struct udevice *dev)
{
#ifdef CONFIG_RTC_DS1337
rtc_write(dev, RTC_CTL_REG_ADDR, RTC_DS1337_RESET_VAL);
#elif defined CONFIG_RTC_DS1388
rtc_write(dev, RTC_CTL_REG_ADDR, 0x0); /* hw default */
#endif
#ifdef CONFIG_RTC_DS1339_TCR_VAL
rtc_write(dev, RTC_TC_REG_ADDR, CONFIG_RTC_DS1339_TCR_VAL);
#endif
#ifdef CONFIG_RTC_DS1388_TCR_VAL
rtc_write(dev, RTC_TC_REG_ADDR, CONFIG_RTC_DS1388_TCR_VAL);
#endif
return 0;
}
static const struct rtc_ops ds1337_rtc_ops = {
.get = ds1337_rtc_get,
.set = ds1337_rtc_set,
.reset = ds1337_rtc_reset,
};
static const struct udevice_id ds1337_rtc_ids[] = {
{ .compatible = "ds1337" },
{ .compatible = "ds1338" },
{ .compatible = "ds1338" },
{ }
};
U_BOOT_DRIVER(rtc_ds1337) = {
.name = "rtc-ds1337",
.id = UCLASS_RTC,
.of_match = ds1337_rtc_ids,
.ops = &ds1337_rtc_ops,
};
#endif
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