static int omap_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct omap_rtc *rtc = dev_get_drvdata(dev); u8 reg, irqwake_reg = 0; local_irq_disable(); rtc_wait_not_busy(rtc); reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); if (rtc->type->has_irqwakeen) irqwake_reg = rtc_read(rtc, OMAP_RTC_IRQWAKEEN); if (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_wait_not_busy(rtc); rtc->type->unlock(rtc); 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_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_alarm_irq_enable(struct device *dev, unsigned int enabled) { u8 reg; local_irq_disable(); rtc_wait_not_busy(); reg = rtc_read(OMAP_RTC_INTERRUPTS_REG); if (enabled) reg |= OMAP_RTC_INTERRUPTS_IT_ALARM; else reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM; rtc_wait_not_busy(); rtc_write(reg, OMAP_RTC_INTERRUPTS_REG); local_irq_enable(); 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; }
static int omap_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { u8 reg; switch (cmd) { case RTC_AIE_OFF: case RTC_AIE_ON: case RTC_UIE_OFF: case RTC_UIE_ON: break; default: return -ENOIOCTLCMD; } local_irq_disable(); rtc_wait_not_busy(); reg = rtc_read(OMAP_RTC_INTERRUPTS_REG); switch (cmd) { /* AIE = Alarm Interrupt Enable */ case RTC_AIE_OFF: reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM; break; case RTC_AIE_ON: reg |= OMAP_RTC_INTERRUPTS_IT_ALARM; break; /* UIE = Update Interrupt Enable (1/second) */ case RTC_UIE_OFF: reg &= ~OMAP_RTC_INTERRUPTS_IT_TIMER; break; case RTC_UIE_ON: reg |= OMAP_RTC_INTERRUPTS_IT_TIMER; break; } rtc_wait_not_busy(); rtc_write(reg, OMAP_RTC_INTERRUPTS_REG); local_irq_enable(); return 0; }
static int omap_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct omap_rtc *rtc = dev_get_drvdata(dev); /* we don't report wday/yday/isdst ... */ local_irq_disable(); rtc_wait_not_busy(rtc); omap_rtc_read_time_raw(rtc, tm); local_irq_enable(); bcd2tm(tm); 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_read_time(struct device *dev, struct rtc_time *tm) { /* we don't report wday/yday/isdst ... */ local_irq_disable(); rtc_wait_not_busy(); tm->tm_sec = rtc_read(OMAP_RTC_SECONDS_REG); tm->tm_min = rtc_read(OMAP_RTC_MINUTES_REG); tm->tm_hour = rtc_read(OMAP_RTC_HOURS_REG); tm->tm_mday = rtc_read(OMAP_RTC_DAYS_REG); tm->tm_mon = rtc_read(OMAP_RTC_MONTHS_REG); tm->tm_year = rtc_read(OMAP_RTC_YEARS_REG); local_irq_enable(); bcd2tm(tm); return 0; }
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; }
/* * spear_rtc_read_time - set the time * @dev: rtc device in use * @tm: holds date and time * * This function read time and date. On success it will return 0 * otherwise -ve error is returned. */ static int spear_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct spear_rtc_config *config = dev_get_drvdata(dev); unsigned int time, date; /* we don't report wday/yday/isdst ... */ rtc_wait_not_busy(config); time = readl(config->ioaddr + TIME_REG); date = readl(config->ioaddr + DATE_REG); tm->tm_sec = (time >> SECOND_SHIFT) & SECOND_MASK; tm->tm_min = (time >> MINUTE_SHIFT) & MIN_MASK; tm->tm_hour = (time >> HOUR_SHIFT) & HOUR_MASK; tm->tm_mday = (date >> MDAY_SHIFT) & DAY_MASK; tm->tm_mon = (date >> MONTH_SHIFT) & MONTH_MASK; tm->tm_year = (date >> YEAR_SHIFT) & YEAR_MASK; bcd2tm(tm); return 0; }
static int omap_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) { local_irq_disable(); rtc_wait_not_busy(); alm->time.tm_sec = rtc_read(OMAP_RTC_ALARM_SECONDS_REG); alm->time.tm_min = rtc_read(OMAP_RTC_ALARM_MINUTES_REG); alm->time.tm_hour = rtc_read(OMAP_RTC_ALARM_HOURS_REG); alm->time.tm_mday = rtc_read(OMAP_RTC_ALARM_DAYS_REG); alm->time.tm_mon = rtc_read(OMAP_RTC_ALARM_MONTHS_REG); alm->time.tm_year = rtc_read(OMAP_RTC_ALARM_YEARS_REG); local_irq_enable(); bcd2tm(&alm->time); alm->enabled = !!(rtc_read(OMAP_RTC_INTERRUPTS_REG) & OMAP_RTC_INTERRUPTS_IT_ALARM); return 0; }
/* * spear_rtc_read_alarm - read the alarm time * @dev: rtc device in use * @alm: holds alarm date and time * * This function read alarm time and date. On success it will return 0 * otherwise -ve error is returned. */ static int spear_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) { struct spear_rtc_config *config = dev_get_drvdata(dev); unsigned int time, date; rtc_wait_not_busy(config); time = readl(config->ioaddr + ALARM_TIME_REG); date = readl(config->ioaddr + ALARM_DATE_REG); alm->time.tm_sec = (time >> SECOND_SHIFT) & SECOND_MASK; alm->time.tm_min = (time >> MINUTE_SHIFT) & MIN_MASK; alm->time.tm_hour = (time >> HOUR_SHIFT) & HOUR_MASK; alm->time.tm_mday = (date >> MDAY_SHIFT) & DAY_MASK; alm->time.tm_mon = (date >> MONTH_SHIFT) & MONTH_MASK; alm->time.tm_year = (date >> YEAR_SHIFT) & YEAR_MASK; bcd2tm(&alm->time); alm->enabled = readl(config->ioaddr + CTRL_REG) & INT_ENABLE; return 0; }
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; }
static int omap_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) { struct omap_rtc *rtc = dev_get_drvdata(dev); u8 interrupts; local_irq_disable(); rtc_wait_not_busy(rtc); alm->time.tm_sec = rtc_read(rtc, OMAP_RTC_ALARM_SECONDS_REG); alm->time.tm_min = rtc_read(rtc, OMAP_RTC_ALARM_MINUTES_REG); alm->time.tm_hour = rtc_read(rtc, OMAP_RTC_ALARM_HOURS_REG); alm->time.tm_mday = rtc_read(rtc, OMAP_RTC_ALARM_DAYS_REG); alm->time.tm_mon = rtc_read(rtc, OMAP_RTC_ALARM_MONTHS_REG); alm->time.tm_year = rtc_read(rtc, OMAP_RTC_ALARM_YEARS_REG); local_irq_enable(); bcd2tm(&alm->time); interrupts = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); alm->enabled = !!(interrupts & OMAP_RTC_INTERRUPTS_IT_ALARM); return 0; }