static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
u8 reg;
if (tm2bcd(&alm->time) < 0)
return -EINVAL;
local_irq_disable();
rtc_wait_not_busy();
rtc_write(alm->time.tm_year, OMAP_RTC_ALARM_YEARS_REG);
rtc_write(alm->time.tm_mon, OMAP_RTC_ALARM_MONTHS_REG);
rtc_write(alm->time.tm_mday, OMAP_RTC_ALARM_DAYS_REG);
rtc_write(alm->time.tm_hour, OMAP_RTC_ALARM_HOURS_REG);
rtc_write(alm->time.tm_min, OMAP_RTC_ALARM_MINUTES_REG);
rtc_write(alm->time.tm_sec, OMAP_RTC_ALARM_SECONDS_REG);
reg = rtc_read(OMAP_RTC_INTERRUPTS_REG);
if (alm->enabled)
reg |= OMAP_RTC_INTERRUPTS_IT_ALARM;
else
reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM;
rtc_write(reg, OMAP_RTC_INTERRUPTS_REG);
local_irq_enable();
return 0;
}
/*
* spear_rtc_set_alarm - set the alarm time
* @dev: rtc device in use
* @alm: holds alarm date and time
*
* This function set alarm time and date. On success it will return 0
* otherwise -ve error is returned.
*/
static int spear_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
struct spear_rtc_config *config = dev_get_drvdata(dev);
unsigned int time, date;
int err;
if (tm2bcd(&alm->time) < 0)
return -EINVAL;
rtc_wait_not_busy(config);
time = (alm->time.tm_sec << SECOND_SHIFT) | (alm->time.tm_min <<
MINUTE_SHIFT) | (alm->time.tm_hour << HOUR_SHIFT);
date = (alm->time.tm_mday << MDAY_SHIFT) | (alm->time.tm_mon <<
MONTH_SHIFT) | (alm->time.tm_year << YEAR_SHIFT);
writel(time, config->ioaddr + ALARM_TIME_REG);
writel(date, config->ioaddr + ALARM_DATE_REG);
err = is_write_complete(config);
if (err < 0)
return err;
if (alm->enabled)
spear_rtc_enable_interrupt(config);
else
spear_rtc_disable_interrupt(config);
return 0;
}
static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
u8 reg;
/* Much userspace code uses RTC_ALM_SET, thus "don't care" for
* day/month/year specifies alarms up to 24 hours in the future.
* So we need to handle that ... but let's ignore the "don't care"
* values for hours/minutes/seconds.
*/
if (alm->time.tm_mday <= 0
&& alm->time.tm_mon < 0
&& alm->time.tm_year < 0) {
struct rtc_time tm;
unsigned long now, then;
omap_rtc_read_time(dev, &tm);
rtc_tm_to_time(&tm, &now);
alm->time.tm_mday = tm.tm_mday;
alm->time.tm_mon = tm.tm_mon;
alm->time.tm_year = tm.tm_year;
rtc_tm_to_time(&alm->time, &then);
/* sometimes the alarm wraps into tomorrow */
if (then < now) {
rtc_time_to_tm(now + 24 * 60 * 60, &tm);
alm->time.tm_mday = tm.tm_mday;
alm->time.tm_mon = tm.tm_mon;
alm->time.tm_year = tm.tm_year;
}
}
if (tm2bcd(&alm->time) < 0)
return -EINVAL;
local_irq_disable();
rtc_wait_not_busy();
rtc_write(alm->time.tm_year, OMAP_RTC_ALARM_YEARS_REG);
rtc_write(alm->time.tm_mon, OMAP_RTC_ALARM_MONTHS_REG);
rtc_write(alm->time.tm_mday, OMAP_RTC_ALARM_DAYS_REG);
rtc_write(alm->time.tm_hour, OMAP_RTC_ALARM_HOURS_REG);
rtc_write(alm->time.tm_min, OMAP_RTC_ALARM_MINUTES_REG);
rtc_write(alm->time.tm_sec, OMAP_RTC_ALARM_SECONDS_REG);
reg = rtc_read(OMAP_RTC_INTERRUPTS_REG);
if (alm->enabled)
reg |= OMAP_RTC_INTERRUPTS_IT_ALARM;
else
reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM;
rtc_write(reg, OMAP_RTC_INTERRUPTS_REG);
local_irq_enable();
return 0;
}
/*
* omap_rtc_poweroff: RTC-controlled power off
*
* The RTC can be used to control an external PMIC via the pmic_power_en pin,
* which can be configured to transition to OFF on ALARM2 events.
*
* Notes:
* The two-second alarm offset is the shortest offset possible as the alarm
* registers must be set before the next timer update and the offset
* calculation is too heavy for everything to be done within a single access
* period (~15 us).
*
* Called with local interrupts disabled.
*/
static void omap_rtc_power_off(void)
{
struct omap_rtc *rtc = omap_rtc_power_off_rtc;
struct rtc_time tm;
unsigned long now;
u32 val;
rtc->type->unlock(rtc);
/* enable pmic_power_en control */
val = rtc_readl(rtc, OMAP_RTC_PMIC_REG);
rtc_writel(rtc, OMAP_RTC_PMIC_REG, val | OMAP_RTC_PMIC_POWER_EN_EN);
/* set alarm two seconds from now */
omap_rtc_read_time_raw(rtc, &tm);
bcd2tm(&tm);
rtc_tm_to_time(&tm, &now);
rtc_time_to_tm(now + 2, &tm);
if (tm2bcd(&tm) < 0) {
dev_err(&rtc->rtc->dev, "power off failed\n");
return;
}
rtc_wait_not_busy(rtc);
rtc_write(rtc, OMAP_RTC_ALARM2_SECONDS_REG, tm.tm_sec);
rtc_write(rtc, OMAP_RTC_ALARM2_MINUTES_REG, tm.tm_min);
rtc_write(rtc, OMAP_RTC_ALARM2_HOURS_REG, tm.tm_hour);
rtc_write(rtc, OMAP_RTC_ALARM2_DAYS_REG, tm.tm_mday);
rtc_write(rtc, OMAP_RTC_ALARM2_MONTHS_REG, tm.tm_mon);
rtc_write(rtc, OMAP_RTC_ALARM2_YEARS_REG, tm.tm_year);
/*
* enable ALARM2 interrupt
*
* NOTE: this fails on AM3352 if rtc_write (writeb) is used
*/
val = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
rtc_writel(rtc, OMAP_RTC_INTERRUPTS_REG,
val | OMAP_RTC_INTERRUPTS_IT_ALARM2);
rtc->type->lock(rtc);
/*
* Wait for alarm to trigger (within two seconds) and external PMIC to
* power off the system. Add a 500 ms margin for external latencies
* (e.g. debounce circuits).
*/
mdelay(2500);
}
/*
* spear_rtc_set_time - set the time
* @dev: rtc device in use
* @tm: holds date and time
*
* This function set time and date. On success it will return 0
* otherwise -ve error is returned.
*/
static int spear_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct spear_rtc_config *config = dev_get_drvdata(dev);
unsigned int time, date;
if (tm2bcd(tm) < 0)
return -EINVAL;
rtc_wait_not_busy(config);
time = (tm->tm_sec << SECOND_SHIFT) | (tm->tm_min << MINUTE_SHIFT) |
(tm->tm_hour << HOUR_SHIFT);
date = (tm->tm_mday << MDAY_SHIFT) | (tm->tm_mon << MONTH_SHIFT) |
(tm->tm_year << YEAR_SHIFT);
writel(time, config->ioaddr + TIME_REG);
writel(date, config->ioaddr + DATE_REG);
return is_write_complete(config);
}
static int omap_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
if (tm2bcd(tm) < 0)
return -EINVAL;
local_irq_disable();
rtc_wait_not_busy();
rtc_write(tm->tm_year, OMAP_RTC_YEARS_REG);
rtc_write(tm->tm_mon, OMAP_RTC_MONTHS_REG);
rtc_write(tm->tm_mday, OMAP_RTC_DAYS_REG);
rtc_write(tm->tm_hour, OMAP_RTC_HOURS_REG);
rtc_write(tm->tm_min, OMAP_RTC_MINUTES_REG);
rtc_write(tm->tm_sec, OMAP_RTC_SECONDS_REG);
local_irq_enable();
return 0;
}
/*
* rtc_power_off: Set the pmic power off sequence. The RTC generates
* pmic_pwr_enable control, which can be used to control an external
* PMIC.
*/
static void rtc_power_off(void)
{
u32 val;
struct rtc_time tm;
unsigned long time;
/* Set PMIC power enable */
val = readl(rtc_base + OMAP_RTC_PMIC_REG);
writel(val | OMAP_RTC_PMIC_POWER_EN_EN, rtc_base + OMAP_RTC_PMIC_REG);
/* Read rtc time */
omap_rtc_read_time(NULL, &tm);
/* Convert Gregorian date to seconds since 01-01-1970 00:00:00 */
rtc_tm_to_time(&tm, &time);
/* Add shutdown time to the current value */
time += SHUTDOWN_TIME_SEC;
/* Convert seconds since 01-01-1970 00:00:00 to Gregorian date */
rtc_time_to_tm(time, &tm);
if (tm2bcd(&tm) < 0)
return;
pr_info("System will go to power_off state in approx. %d secs\n",
SHUTDOWN_TIME_SEC);
/*
* pmic_pwr_enable is controlled by means of ALARM2 event. So here
* programming alarm2 expiry time and enabling alarm2 interrupt
*/
rtc_write(tm.tm_sec, OMAP_RTC_ALARM2_SECONDS_REG);
rtc_write(tm.tm_min, OMAP_RTC_ALARM2_MINUTES_REG);
rtc_write(tm.tm_hour, OMAP_RTC_ALARM2_HOURS_REG);
rtc_write(tm.tm_mday, OMAP_RTC_ALARM2_DAYS_REG);
rtc_write(tm.tm_mon, OMAP_RTC_ALARM2_MONTHS_REG);
rtc_write(tm.tm_year, OMAP_RTC_ALARM2_YEARS_REG);
/* Enable alarm2 interrupt */
val = readl(rtc_base + OMAP_RTC_INTERRUPTS_REG);
writel(val | OMAP_RTC_INTERRUPTS_IT_ALARM2,
rtc_base + OMAP_RTC_INTERRUPTS_REG);
}
static int stm32_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct stm32_rtc *rtc = dev_get_drvdata(dev);
const struct stm32_rtc_registers *regs = &rtc->data->regs;
unsigned int tr, dr;
int ret = 0;
tm2bcd(tm);
/* Time in BCD format */
tr = ((tm->tm_sec << STM32_RTC_TR_SEC_SHIFT) & STM32_RTC_TR_SEC) |
((tm->tm_min << STM32_RTC_TR_MIN_SHIFT) & STM32_RTC_TR_MIN) |
((tm->tm_hour << STM32_RTC_TR_HOUR_SHIFT) & STM32_RTC_TR_HOUR);
/* Date in BCD format */
dr = ((tm->tm_mday << STM32_RTC_DR_DATE_SHIFT) & STM32_RTC_DR_DATE) |
((tm->tm_mon << STM32_RTC_DR_MONTH_SHIFT) & STM32_RTC_DR_MONTH) |
((tm->tm_year << STM32_RTC_DR_YEAR_SHIFT) & STM32_RTC_DR_YEAR) |
((tm->tm_wday << STM32_RTC_DR_WDAY_SHIFT) & STM32_RTC_DR_WDAY);
stm32_rtc_wpr_unlock(rtc);
ret = stm32_rtc_enter_init_mode(rtc);
if (ret) {
dev_err(dev, "Can't enter in init mode. Set time aborted.\n");
goto end;
}
writel_relaxed(tr, rtc->base + regs->tr);
writel_relaxed(dr, rtc->base + regs->dr);
stm32_rtc_exit_init_mode(rtc);
ret = stm32_rtc_wait_sync(rtc);
end:
stm32_rtc_wpr_lock(rtc);
return ret;
}
static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
struct omap_rtc *rtc = dev_get_drvdata(dev);
u8 reg, irqwake_reg = 0;
if (tm2bcd(&alm->time) < 0)
return -EINVAL;
local_irq_disable();
rtc_wait_not_busy(rtc);
rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_ALARM_YEARS_REG, alm->time.tm_year);
rtc_write(rtc, OMAP_RTC_ALARM_MONTHS_REG, alm->time.tm_mon);
rtc_write(rtc, OMAP_RTC_ALARM_DAYS_REG, alm->time.tm_mday);
rtc_write(rtc, OMAP_RTC_ALARM_HOURS_REG, alm->time.tm_hour);
rtc_write(rtc, OMAP_RTC_ALARM_MINUTES_REG, alm->time.tm_min);
rtc_write(rtc, OMAP_RTC_ALARM_SECONDS_REG, alm->time.tm_sec);
reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
if (rtc->type->has_irqwakeen)
irqwake_reg = rtc_read(rtc, OMAP_RTC_IRQWAKEEN);
if (alm->enabled) {
reg |= OMAP_RTC_INTERRUPTS_IT_ALARM;
irqwake_reg |= OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN;
} else {
reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM;
irqwake_reg &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN;
}
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, reg);
if (rtc->type->has_irqwakeen)
rtc_write(rtc, OMAP_RTC_IRQWAKEEN, irqwake_reg);
rtc->type->lock(rtc);
local_irq_enable();
return 0;
}
static int omap_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct omap_rtc *rtc = dev_get_drvdata(dev);
if (tm2bcd(tm) < 0)
return -EINVAL;
local_irq_disable();
rtc_wait_not_busy(rtc);
rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_YEARS_REG, tm->tm_year);
rtc_write(rtc, OMAP_RTC_MONTHS_REG, tm->tm_mon);
rtc_write(rtc, OMAP_RTC_DAYS_REG, tm->tm_mday);
rtc_write(rtc, OMAP_RTC_HOURS_REG, tm->tm_hour);
rtc_write(rtc, OMAP_RTC_MINUTES_REG, tm->tm_min);
rtc_write(rtc, OMAP_RTC_SECONDS_REG, tm->tm_sec);
rtc->type->lock(rtc);
local_irq_enable();
return 0;
}
