mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-14 15:54:15 +08:00
rtc: s5m-rtc: add real-time clock driver for s5m8767
Add real-time clock driver for s5m8767. Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Todd Broch <tbroch@chromium.org> Cc: Mark Brown <broonie@kernel.org> Acked-by: Lee Jones <lee.jones@linaro.org> [mfd parts] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Sangbeom Kim
Linus Torvalds
parent
5e0d12142e
commit
5bccae6ec4
@ -497,6 +497,16 @@ config RTC_DRV_RV3029C2
|
||||
This driver can also be built as a module. If so, the module
|
||||
will be called rtc-rv3029c2.
|
||||
|
||||
config RTC_DRV_S5M
|
||||
tristate "Samsung S5M series"
|
||||
depends on MFD_SEC_CORE
|
||||
help
|
||||
If you say yes here you will get support for the
|
||||
RTC of Samsung S5M PMIC series.
|
||||
|
||||
This driver can also be built as a module. If so, the module
|
||||
will be called rtc-s5m.
|
||||
|
||||
endif # I2C
|
||||
|
||||
comment "SPI RTC drivers"
|
||||
|
||||
@ -107,6 +107,7 @@ obj-$(CONFIG_RTC_DRV_RX8025) += rtc-rx8025.o
|
||||
obj-$(CONFIG_RTC_DRV_RX8581) += rtc-rx8581.o
|
||||
obj-$(CONFIG_RTC_DRV_S35390A) += rtc-s35390a.o
|
||||
obj-$(CONFIG_RTC_DRV_S3C) += rtc-s3c.o
|
||||
obj-$(CONFIG_RTC_DRV_S5M) += rtc-s5m.o
|
||||
obj-$(CONFIG_RTC_DRV_SA1100) += rtc-sa1100.o
|
||||
obj-$(CONFIG_RTC_DRV_SH) += rtc-sh.o
|
||||
obj-$(CONFIG_RTC_DRV_SNVS) += rtc-snvs.o
|
||||
|
||||
635
drivers/rtc/rtc-s5m.c
Normal file
635
drivers/rtc/rtc-s5m.c
Normal file
@ -0,0 +1,635 @@
|
||||
/*
|
||||
* Copyright (c) 2013 Samsung Electronics Co., Ltd
|
||||
* http://www.samsung.com
|
||||
*
|
||||
* Copyright (C) 2013 Google, Inc
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/bcd.h>
|
||||
#include <linux/bitops.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/rtc.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/mfd/samsung/core.h>
|
||||
#include <linux/mfd/samsung/irq.h>
|
||||
#include <linux/mfd/samsung/rtc.h>
|
||||
|
||||
struct s5m_rtc_info {
|
||||
struct device *dev;
|
||||
struct sec_pmic_dev *s5m87xx;
|
||||
struct regmap *rtc;
|
||||
struct rtc_device *rtc_dev;
|
||||
int irq;
|
||||
int device_type;
|
||||
int rtc_24hr_mode;
|
||||
bool wtsr_smpl;
|
||||
};
|
||||
|
||||
static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm,
|
||||
int rtc_24hr_mode)
|
||||
{
|
||||
tm->tm_sec = data[RTC_SEC] & 0x7f;
|
||||
tm->tm_min = data[RTC_MIN] & 0x7f;
|
||||
if (rtc_24hr_mode) {
|
||||
tm->tm_hour = data[RTC_HOUR] & 0x1f;
|
||||
} else {
|
||||
tm->tm_hour = data[RTC_HOUR] & 0x0f;
|
||||
if (data[RTC_HOUR] & HOUR_PM_MASK)
|
||||
tm->tm_hour += 12;
|
||||
}
|
||||
|
||||
tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f);
|
||||
tm->tm_mday = data[RTC_DATE] & 0x1f;
|
||||
tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1;
|
||||
tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100;
|
||||
tm->tm_yday = 0;
|
||||
tm->tm_isdst = 0;
|
||||
}
|
||||
|
||||
static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data)
|
||||
{
|
||||
data[RTC_SEC] = tm->tm_sec;
|
||||
data[RTC_MIN] = tm->tm_min;
|
||||
|
||||
if (tm->tm_hour >= 12)
|
||||
data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK;
|
||||
else
|
||||
data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK;
|
||||
|
||||
data[RTC_WEEKDAY] = 1 << tm->tm_wday;
|
||||
data[RTC_DATE] = tm->tm_mday;
|
||||
data[RTC_MONTH] = tm->tm_mon + 1;
|
||||
data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;
|
||||
|
||||
if (tm->tm_year < 100) {
|
||||
pr_err("s5m8767 RTC cannot handle the year %d.\n",
|
||||
1900 + tm->tm_year);
|
||||
return -EINVAL;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info)
|
||||
{
|
||||
int ret;
|
||||
unsigned int data;
|
||||
|
||||
ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);
|
||||
if (ret < 0) {
|
||||
dev_err(info->dev, "failed to read update reg(%d)\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
data |= RTC_TIME_EN_MASK;
|
||||
data |= RTC_UDR_MASK;
|
||||
|
||||
ret = regmap_write(info->rtc, SEC_RTC_UDR_CON, data);
|
||||
if (ret < 0) {
|
||||
dev_err(info->dev, "failed to write update reg(%d)\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
do {
|
||||
ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);
|
||||
} while ((data & RTC_UDR_MASK) && !ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)
|
||||
{
|
||||
int ret;
|
||||
unsigned int data;
|
||||
|
||||
ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);
|
||||
if (ret < 0) {
|
||||
dev_err(info->dev, "%s: fail to read update reg(%d)\n",
|
||||
__func__, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
data &= ~RTC_TIME_EN_MASK;
|
||||
data |= RTC_UDR_MASK;
|
||||
|
||||
ret = regmap_write(info->rtc, SEC_RTC_UDR_CON, data);
|
||||
if (ret < 0) {
|
||||
dev_err(info->dev, "%s: fail to write update reg(%d)\n",
|
||||
__func__, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
do {
|
||||
ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);
|
||||
} while ((data & RTC_UDR_MASK) && !ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm)
|
||||
{
|
||||
tm->tm_sec = bcd2bin(data[RTC_SEC]);
|
||||
tm->tm_min = bcd2bin(data[RTC_MIN]);
|
||||
|
||||
if (data[RTC_HOUR] & HOUR_12) {
|
||||
tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f);
|
||||
if (data[RTC_HOUR] & HOUR_PM)
|
||||
tm->tm_hour += 12;
|
||||
} else {
|
||||
tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f);
|
||||
}
|
||||
|
||||
tm->tm_wday = data[RTC_WEEKDAY] & 0x07;
|
||||
tm->tm_mday = bcd2bin(data[RTC_DATE]);
|
||||
tm->tm_mon = bcd2bin(data[RTC_MONTH]);
|
||||
tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100;
|
||||
tm->tm_year -= 1900;
|
||||
}
|
||||
|
||||
static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data)
|
||||
{
|
||||
data[RTC_SEC] = bin2bcd(tm->tm_sec);
|
||||
data[RTC_MIN] = bin2bcd(tm->tm_min);
|
||||
data[RTC_HOUR] = bin2bcd(tm->tm_hour);
|
||||
data[RTC_WEEKDAY] = tm->tm_wday;
|
||||
data[RTC_DATE] = bin2bcd(tm->tm_mday);
|
||||
data[RTC_MONTH] = bin2bcd(tm->tm_mon);
|
||||
data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100);
|
||||
data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100);
|
||||
}
|
||||
|
||||
static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)
|
||||
{
|
||||
struct s5m_rtc_info *info = dev_get_drvdata(dev);
|
||||
u8 data[8];
|
||||
int ret;
|
||||
|
||||
ret = regmap_bulk_read(info->rtc, SEC_RTC_SEC, data, 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
switch (info->device_type) {
|
||||
case S5M8763X:
|
||||
s5m8763_data_to_tm(data, tm);
|
||||
break;
|
||||
|
||||
case S5M8767X:
|
||||
s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode);
|
||||
break;
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,
|
||||
1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday,
|
||||
tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday);
|
||||
|
||||
return rtc_valid_tm(tm);
|
||||
}
|
||||
|
||||
static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm)
|
||||
{
|
||||
struct s5m_rtc_info *info = dev_get_drvdata(dev);
|
||||
u8 data[8];
|
||||
int ret = 0;
|
||||
|
||||
switch (info->device_type) {
|
||||
case S5M8763X:
|
||||
s5m8763_tm_to_data(tm, data);
|
||||
break;
|
||||
case S5M8767X:
|
||||
ret = s5m8767_tm_to_data(tm, data);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,
|
||||
1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday,
|
||||
tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday);
|
||||
|
||||
ret = regmap_raw_write(info->rtc, SEC_RTC_SEC, data, 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s5m8767_rtc_set_time_reg(info);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
|
||||
{
|
||||
struct s5m_rtc_info *info = dev_get_drvdata(dev);
|
||||
u8 data[8];
|
||||
unsigned int val;
|
||||
int ret, i;
|
||||
|
||||
ret = regmap_bulk_read(info->rtc, SEC_ALARM0_SEC, data, 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
switch (info->device_type) {
|
||||
case S5M8763X:
|
||||
s5m8763_data_to_tm(data, &alrm->time);
|
||||
ret = regmap_read(info->rtc, SEC_ALARM0_CONF, &val);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
alrm->enabled = !!val;
|
||||
|
||||
ret = regmap_read(info->rtc, SEC_RTC_STATUS, &val);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
break;
|
||||
|
||||
case S5M8767X:
|
||||
s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode);
|
||||
dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,
|
||||
1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon,
|
||||
alrm->time.tm_mday, alrm->time.tm_hour,
|
||||
alrm->time.tm_min, alrm->time.tm_sec,
|
||||
alrm->time.tm_wday);
|
||||
|
||||
alrm->enabled = 0;
|
||||
for (i = 0; i < 7; i++) {
|
||||
if (data[i] & ALARM_ENABLE_MASK) {
|
||||
alrm->enabled = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
alrm->pending = 0;
|
||||
ret = regmap_read(info->rtc, SEC_RTC_STATUS, &val);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
break;
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (val & ALARM0_STATUS)
|
||||
alrm->pending = 1;
|
||||
else
|
||||
alrm->pending = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info)
|
||||
{
|
||||
u8 data[8];
|
||||
int ret, i;
|
||||
struct rtc_time tm;
|
||||
|
||||
ret = regmap_bulk_read(info->rtc, SEC_ALARM0_SEC, data, 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode);
|
||||
dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,
|
||||
1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday,
|
||||
tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday);
|
||||
|
||||
switch (info->device_type) {
|
||||
case S5M8763X:
|
||||
ret = regmap_write(info->rtc, SEC_ALARM0_CONF, 0);
|
||||
break;
|
||||
|
||||
case S5M8767X:
|
||||
for (i = 0; i < 7; i++)
|
||||
data[i] &= ~ALARM_ENABLE_MASK;
|
||||
|
||||
ret = regmap_raw_write(info->rtc, SEC_ALARM0_SEC, data, 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s5m8767_rtc_set_alarm_reg(info);
|
||||
|
||||
break;
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s5m_rtc_start_alarm(struct s5m_rtc_info *info)
|
||||
{
|
||||
int ret;
|
||||
u8 data[8];
|
||||
u8 alarm0_conf;
|
||||
struct rtc_time tm;
|
||||
|
||||
ret = regmap_bulk_read(info->rtc, SEC_ALARM0_SEC, data, 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode);
|
||||
dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,
|
||||
1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday,
|
||||
tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday);
|
||||
|
||||
switch (info->device_type) {
|
||||
case S5M8763X:
|
||||
alarm0_conf = 0x77;
|
||||
ret = regmap_write(info->rtc, SEC_ALARM0_CONF, alarm0_conf);
|
||||
break;
|
||||
|
||||
case S5M8767X:
|
||||
data[RTC_SEC] |= ALARM_ENABLE_MASK;
|
||||
data[RTC_MIN] |= ALARM_ENABLE_MASK;
|
||||
data[RTC_HOUR] |= ALARM_ENABLE_MASK;
|
||||
data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK;
|
||||
if (data[RTC_DATE] & 0x1f)
|
||||
data[RTC_DATE] |= ALARM_ENABLE_MASK;
|
||||
if (data[RTC_MONTH] & 0xf)
|
||||
data[RTC_MONTH] |= ALARM_ENABLE_MASK;
|
||||
if (data[RTC_YEAR1] & 0x7f)
|
||||
data[RTC_YEAR1] |= ALARM_ENABLE_MASK;
|
||||
|
||||
ret = regmap_raw_write(info->rtc, SEC_ALARM0_SEC, data, 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
ret = s5m8767_rtc_set_alarm_reg(info);
|
||||
|
||||
break;
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
|
||||
{
|
||||
struct s5m_rtc_info *info = dev_get_drvdata(dev);
|
||||
u8 data[8];
|
||||
int ret;
|
||||
|
||||
switch (info->device_type) {
|
||||
case S5M8763X:
|
||||
s5m8763_tm_to_data(&alrm->time, data);
|
||||
break;
|
||||
|
||||
case S5M8767X:
|
||||
s5m8767_tm_to_data(&alrm->time, data);
|
||||
break;
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__,
|
||||
1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon,
|
||||
alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min,
|
||||
alrm->time.tm_sec, alrm->time.tm_wday);
|
||||
|
||||
ret = s5m_rtc_stop_alarm(info);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = regmap_raw_write(info->rtc, SEC_ALARM0_SEC, data, 8);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = s5m8767_rtc_set_alarm_reg(info);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (alrm->enabled)
|
||||
ret = s5m_rtc_start_alarm(info);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s5m_rtc_alarm_irq_enable(struct device *dev,
|
||||
unsigned int enabled)
|
||||
{
|
||||
struct s5m_rtc_info *info = dev_get_drvdata(dev);
|
||||
|
||||
if (enabled)
|
||||
return s5m_rtc_start_alarm(info);
|
||||
else
|
||||
return s5m_rtc_stop_alarm(info);
|
||||
}
|
||||
|
||||
static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data)
|
||||
{
|
||||
struct s5m_rtc_info *info = data;
|
||||
|
||||
rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static const struct rtc_class_ops s5m_rtc_ops = {
|
||||
.read_time = s5m_rtc_read_time,
|
||||
.set_time = s5m_rtc_set_time,
|
||||
.read_alarm = s5m_rtc_read_alarm,
|
||||
.set_alarm = s5m_rtc_set_alarm,
|
||||
.alarm_irq_enable = s5m_rtc_alarm_irq_enable,
|
||||
};
|
||||
|
||||
static void s5m_rtc_enable_wtsr(struct s5m_rtc_info *info, bool enable)
|
||||
{
|
||||
int ret;
|
||||
ret = regmap_update_bits(info->rtc, SEC_WTSR_SMPL_CNTL,
|
||||
WTSR_ENABLE_MASK,
|
||||
enable ? WTSR_ENABLE_MASK : 0);
|
||||
if (ret < 0)
|
||||
dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n",
|
||||
__func__, ret);
|
||||
}
|
||||
|
||||
static void s5m_rtc_enable_smpl(struct s5m_rtc_info *info, bool enable)
|
||||
{
|
||||
int ret;
|
||||
ret = regmap_update_bits(info->rtc, SEC_WTSR_SMPL_CNTL,
|
||||
SMPL_ENABLE_MASK,
|
||||
enable ? SMPL_ENABLE_MASK : 0);
|
||||
if (ret < 0)
|
||||
dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n",
|
||||
__func__, ret);
|
||||
}
|
||||
|
||||
static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)
|
||||
{
|
||||
u8 data[2];
|
||||
unsigned int tp_read;
|
||||
int ret;
|
||||
struct rtc_time tm;
|
||||
|
||||
ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &tp_read);
|
||||
if (ret < 0) {
|
||||
dev_err(info->dev, "%s: fail to read control reg(%d)\n",
|
||||
__func__, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Set RTC control register : Binary mode, 24hour mode */
|
||||
data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
|
||||
data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
|
||||
|
||||
info->rtc_24hr_mode = 1;
|
||||
ret = regmap_raw_write(info->rtc, SEC_ALARM0_CONF, data, 2);
|
||||
if (ret < 0) {
|
||||
dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",
|
||||
__func__, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* In first boot time, Set rtc time to 1/1/2012 00:00:00(SUN) */
|
||||
if ((tp_read & RTC_TCON_MASK) == 0) {
|
||||
dev_dbg(info->dev, "rtc init\n");
|
||||
tm.tm_sec = 0;
|
||||
tm.tm_min = 0;
|
||||
tm.tm_hour = 0;
|
||||
tm.tm_wday = 0;
|
||||
tm.tm_mday = 1;
|
||||
tm.tm_mon = 0;
|
||||
tm.tm_year = 112;
|
||||
tm.tm_yday = 0;
|
||||
tm.tm_isdst = 0;
|
||||
ret = s5m_rtc_set_time(info->dev, &tm);
|
||||
}
|
||||
|
||||
ret = regmap_update_bits(info->rtc, SEC_RTC_UDR_CON,
|
||||
RTC_TCON_MASK, tp_read | RTC_TCON_MASK);
|
||||
if (ret < 0)
|
||||
dev_err(info->dev, "%s: fail to update TCON reg(%d)\n",
|
||||
__func__, ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int s5m_rtc_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent);
|
||||
struct sec_platform_data *pdata = s5m87xx->pdata;
|
||||
struct s5m_rtc_info *info;
|
||||
int ret;
|
||||
|
||||
if (!pdata) {
|
||||
dev_err(pdev->dev.parent, "Platform data not supplied\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
|
||||
if (!info)
|
||||
return -ENOMEM;
|
||||
|
||||
info->dev = &pdev->dev;
|
||||
info->s5m87xx = s5m87xx;
|
||||
info->rtc = s5m87xx->rtc;
|
||||
info->device_type = s5m87xx->device_type;
|
||||
info->wtsr_smpl = s5m87xx->wtsr_smpl;
|
||||
|
||||
switch (pdata->device_type) {
|
||||
case S5M8763X:
|
||||
info->irq = s5m87xx->irq_base + S5M8763_IRQ_ALARM0;
|
||||
break;
|
||||
|
||||
case S5M8767X:
|
||||
info->irq = s5m87xx->irq_base + S5M8767_IRQ_RTCA1;
|
||||
break;
|
||||
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
dev_err(&pdev->dev, "Unsupported device type: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, info);
|
||||
|
||||
ret = s5m8767_rtc_init_reg(info);
|
||||
|
||||
if (info->wtsr_smpl) {
|
||||
s5m_rtc_enable_wtsr(info, true);
|
||||
s5m_rtc_enable_smpl(info, true);
|
||||
}
|
||||
|
||||
device_init_wakeup(&pdev->dev, 1);
|
||||
|
||||
info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc",
|
||||
&s5m_rtc_ops, THIS_MODULE);
|
||||
|
||||
if (IS_ERR(info->rtc_dev))
|
||||
return PTR_ERR(info->rtc_dev);
|
||||
|
||||
ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
|
||||
s5m_rtc_alarm_irq, 0, "rtc-alarm0",
|
||||
info);
|
||||
if (ret < 0)
|
||||
dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
|
||||
info->irq, ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void s5m_rtc_shutdown(struct platform_device *pdev)
|
||||
{
|
||||
struct s5m_rtc_info *info = platform_get_drvdata(pdev);
|
||||
int i;
|
||||
unsigned int val = 0;
|
||||
if (info->wtsr_smpl) {
|
||||
for (i = 0; i < 3; i++) {
|
||||
s5m_rtc_enable_wtsr(info, false);
|
||||
regmap_read(info->rtc, SEC_WTSR_SMPL_CNTL, &val);
|
||||
pr_debug("%s: WTSR_SMPL reg(0x%02x)\n", __func__, val);
|
||||
if (val & WTSR_ENABLE_MASK)
|
||||
pr_emerg("%s: fail to disable WTSR\n",
|
||||
__func__);
|
||||
else {
|
||||
pr_info("%s: success to disable WTSR\n",
|
||||
__func__);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* Disable SMPL when power off */
|
||||
s5m_rtc_enable_smpl(info, false);
|
||||
}
|
||||
|
||||
static const struct platform_device_id s5m_rtc_id[] = {
|
||||
{ "s5m-rtc", 0 },
|
||||
};
|
||||
|
||||
static struct platform_driver s5m_rtc_driver = {
|
||||
.driver = {
|
||||
.name = "s5m-rtc",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = s5m_rtc_probe,
|
||||
.shutdown = s5m_rtc_shutdown,
|
||||
.id_table = s5m_rtc_id,
|
||||
};
|
||||
|
||||
module_platform_driver(s5m_rtc_driver);
|
||||
|
||||
/* Module information */
|
||||
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
|
||||
MODULE_DESCRIPTION("Samsung S5M RTC driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:s5m-rtc");
|
||||
@ -51,6 +51,7 @@ struct sec_pmic_dev {
|
||||
int ono;
|
||||
int type;
|
||||
bool wakeup;
|
||||
bool wtsr_smpl;
|
||||
};
|
||||
|
||||
int sec_irq_init(struct sec_pmic_dev *sec_pmic);
|
||||
|
||||
@ -62,6 +62,11 @@ enum sec_rtc_reg {
|
||||
/* RTC Update Register1 */
|
||||
#define RTC_UDR_SHIFT 0
|
||||
#define RTC_UDR_MASK (1 << RTC_UDR_SHIFT)
|
||||
#define RTC_TCON_SHIFT 1
|
||||
#define RTC_TCON_MASK (1 << RTC_TCON_SHIFT)
|
||||
#define RTC_TIME_EN_SHIFT 3
|
||||
#define RTC_TIME_EN_MASK (1 << RTC_TIME_EN_SHIFT)
|
||||
|
||||
/* RTC Hour register */
|
||||
#define HOUR_PM_SHIFT 6
|
||||
#define HOUR_PM_MASK (1 << HOUR_PM_SHIFT)
|
||||
@ -69,6 +74,12 @@ enum sec_rtc_reg {
|
||||
#define ALARM_ENABLE_SHIFT 7
|
||||
#define ALARM_ENABLE_MASK (1 << ALARM_ENABLE_SHIFT)
|
||||
|
||||
#define SMPL_ENABLE_SHIFT 7
|
||||
#define SMPL_ENABLE_MASK (1 << SMPL_ENABLE_SHIFT)
|
||||
|
||||
#define WTSR_ENABLE_SHIFT 6
|
||||
#define WTSR_ENABLE_MASK (1 << WTSR_ENABLE_SHIFT)
|
||||
|
||||
enum {
|
||||
RTC_SEC = 0,
|
||||
RTC_MIN,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user