static int mrst_set_alarm(struct device *dev, struct rtc_wkalrm *t)
{
struct mrst_rtc *mrst = dev_get_drvdata(dev);
unsigned char hrs, min, sec;
unsigned char wday, mday, mon, year;
int ret = 0;
if (!is_valid_irq(mrst->irq))
return -EIO;
hrs = t->time.tm_hour;
min = t->time.tm_min;
sec = t->time.tm_sec;
wday = t->time.tm_wday;
mday = t->time.tm_mday;
mon = t->time.tm_mon;
year = t->time.tm_year;
spin_lock_irq(&rtc_lock);
/* Next rtc irq must not be from previous alarm setting */
mrst_irq_disable(mrst, RTC_AIE);
/* Update alarm */
vrtc_cmos_write(hrs, RTC_HOURS_ALARM);
vrtc_cmos_write(min, RTC_MINUTES_ALARM);
vrtc_cmos_write(sec, RTC_SECONDS_ALARM);
if ((__intel_mid_cpu_chip == INTEL_MID_CPU_CHIP_PENWELL) ||
(__intel_mid_cpu_chip == INTEL_MID_CPU_CHIP_CLOVERVIEW)) {
/* Support for date-field in Alarm using OSHOB
* Since, vRTC doesn't have Alarm-registers for date-fields,
* write date-fields into OSHOB for SCU to sync to MSIC-RTC */
writeb(wday, oshob_addr+OSHOB_DAYW_OFFSET);
writeb(mday, oshob_addr+OSHOB_DAYM_OFFSET);
writeb(mon+1, oshob_addr+OSHOB_MON_OFFSET);
/* Adjust for the 1972/1900 */
writeb(year-72, oshob_addr+OSHOB_YEAR_OFFSET);
}
spin_unlock_irq(&rtc_lock);
/* In moorestown vrtc used to be powered off & was not a wake source
* in Standby. In penwell vRTC is kept on even during standby.
* hence this ipc message need not be sent
*/
if (__intel_mid_cpu_chip == INTEL_MID_CPU_CHIP_LINCROFT) {
ret = rpmsg_send_simple_command(vrtc_mrst_instance,
IPCMSG_VRTC, IPC_CMD_VRTC_SETALARM);
if (ret)
return ret;
}
spin_lock_irq(&rtc_lock);
if (t->enabled)
mrst_irq_enable(mrst, RTC_AIE);
spin_unlock_irq(&rtc_lock);
return 0;
}
static int mrst_resume(struct device *dev)
{
struct mrst_rtc *mrst = dev_get_drvdata(dev);
unsigned char tmp = mrst->suspend_ctrl;
/* Re-enable any irqs previously active */
if (tmp & RTC_IRQMASK) {
unsigned char mask;
if (mrst->enabled_wake) {
disable_irq_wake(mrst->irq);
mrst->enabled_wake = 0;
}
spin_lock_irq(&rtc_lock);
do {
vrtc_cmos_write(tmp, RTC_CONTROL);
mask = vrtc_cmos_read(RTC_INTR_FLAGS);
mask &= (tmp & RTC_IRQMASK) | RTC_IRQF;
if (!is_intr(mask))
break;
rtc_update_irq(mrst->rtc, 1, mask);
tmp &= ~RTC_AIE;
} while (mask & RTC_AIE);
spin_unlock_irq(&rtc_lock);
}
dev_dbg(&mrst_rtc.rtc->dev, "resume, ctrl %02x\n", tmp);
return 0;
}
static int mrst_suspend(struct device *dev, pm_message_t mesg)
{
struct mrst_rtc *mrst = dev_get_drvdata(dev);
unsigned char tmp;
/* Only the alarm might be a wakeup event source */
spin_lock_irq(&rtc_lock);
mrst->suspend_ctrl = tmp = vrtc_cmos_read(RTC_CONTROL);
if (tmp & (RTC_PIE | RTC_AIE)) {
unsigned char mask;
if (device_may_wakeup(dev))
mask = RTC_IRQMASK & ~RTC_AIE;
else
mask = RTC_IRQMASK;
tmp &= ~mask;
vrtc_cmos_write(tmp, RTC_CONTROL);
mrst_checkintr(mrst, tmp);
}
spin_unlock_irq(&rtc_lock);
if (tmp & RTC_AIE) {
mrst->enabled_wake = 1;
enable_irq_wake(mrst->irq);
}
dev_dbg(&mrst_rtc.rtc->dev, "suspend%s, ctrl %02x\n",
(tmp & RTC_AIE) ? ", alarm may wake" : "",
tmp);
return 0;
}
static int mrst_set_alarm(struct device *dev, struct rtc_wkalrm *t)
{
struct mrst_rtc *mrst = dev_get_drvdata(dev);
unsigned char hrs, min, sec;
unsigned char wday, mday, mon, year;
int ret = 0;
if (!is_valid_irq(mrst->irq))
return -EIO;
hrs = t->time.tm_hour;
min = t->time.tm_min;
sec = t->time.tm_sec;
wday = t->time.tm_wday;
mday = t->time.tm_mday;
mon = t->time.tm_mon;
year = t->time.tm_year;
spin_lock_irq(&rtc_lock);
/* Next rtc irq must not be from previous alarm setting */
mrst_irq_disable(mrst, RTC_AIE);
/* Update alarm */
vrtc_cmos_write(hrs, RTC_HOURS_ALARM);
vrtc_cmos_write(min, RTC_MINUTES_ALARM);
vrtc_cmos_write(sec, RTC_SECONDS_ALARM);
if ((__intel_mid_cpu_chip == INTEL_MID_CPU_CHIP_PENWELL) ||
(__intel_mid_cpu_chip == INTEL_MID_CPU_CHIP_CLOVERVIEW)) {
/* Support for date-field in Alarm using OSHOB
* Since, vRTC doesn't have Alarm-registers for date-fields,
* write date-fields into OSHOB for SCU to sync to MSIC-RTC */
writeb(wday, oshob_addr+OSHOB_DAYW_OFFSET);
writeb(mday, oshob_addr+OSHOB_DAYM_OFFSET);
writeb(mon+1, oshob_addr+OSHOB_MON_OFFSET);
/* Adjust for the 1972/1900 */
writeb(year-72, oshob_addr+OSHOB_YEAR_OFFSET);
}
if (t->enabled)
mrst_irq_enable(mrst, RTC_AIE);
spin_unlock_irq(&rtc_lock);
return 0;
}
static void mrst_irq_disable(struct mrst_rtc *mrst, unsigned char mask)
{
unsigned char rtc_control;
rtc_control = vrtc_cmos_read(RTC_CONTROL);
rtc_control &= ~mask;
vrtc_cmos_write(rtc_control, RTC_CONTROL);
mrst_checkintr(mrst, rtc_control);
}
/* Only care about the minutes and seconds */
int vrtc_set_mmss(unsigned long nowtime)
{
int real_sec, real_min;
unsigned long flags;
int vrtc_min;
spin_lock_irqsave(&rtc_lock, flags);
vrtc_min = vrtc_cmos_read(RTC_MINUTES);
real_sec = nowtime % 60;
real_min = nowtime / 60;
if (((abs(real_min - vrtc_min) + 15)/30) & 1)
real_min += 30;
real_min %= 60;
vrtc_cmos_write(real_sec, RTC_SECONDS);
vrtc_cmos_write(real_min, RTC_MINUTES);
spin_unlock_irqrestore(&rtc_lock, flags);
return 0;
}
static int mrst_set_time(struct device *dev, struct rtc_time *time)
{
int ret;
unsigned long flags;
unsigned char mon, day, hrs, min, sec;
unsigned int yrs;
yrs = time->tm_year;
mon = time->tm_mon + 1; /* tm_mon starts at zero */
day = time->tm_mday;
hrs = time->tm_hour;
min = time->tm_min;
sec = time->tm_sec;
if (yrs < 72 || yrs > 138)
return -EINVAL;
yrs -= 72;
spin_lock_irqsave(&rtc_lock, flags);
vrtc_cmos_write(yrs, RTC_YEAR);
vrtc_cmos_write(mon, RTC_MONTH);
vrtc_cmos_write(day, RTC_DAY_OF_MONTH);
vrtc_cmos_write(hrs, RTC_HOURS);
vrtc_cmos_write(min, RTC_MINUTES);
vrtc_cmos_write(sec, RTC_SECONDS);
spin_unlock_irqrestore(&rtc_lock, flags);
ret = intel_scu_ipc_simple_command(IPCMSG_VRTC, IPC_CMD_VRTC_SETTIME);
return ret;
}
int vrtc_set_mmss(unsigned long nowtime)
{
unsigned long flags;
struct rtc_time tm;
int year;
int retval = 0;
rtc_time_to_tm(nowtime, &tm);
if (!rtc_valid_tm(&tm) && tm.tm_year >= 72) {
/*
* tm.year is the number of years since 1900, and the
* vrtc need the years since 1972.
*/
year = tm.tm_year - 72;
spin_lock_irqsave(&rtc_lock, flags);
vrtc_cmos_write(year, RTC_YEAR);
vrtc_cmos_write(tm.tm_mon, RTC_MONTH);
vrtc_cmos_write(tm.tm_mday, RTC_DAY_OF_MONTH);
vrtc_cmos_write(tm.tm_hour, RTC_HOURS);
vrtc_cmos_write(tm.tm_min, RTC_MINUTES);
vrtc_cmos_write(tm.tm_sec, RTC_SECONDS);
spin_unlock_irqrestore(&rtc_lock, flags);
} else {
pr_err("%s: Invalid vRTC value: write of %lx to vRTC failed\n",
__FUNCTION__, nowtime);
retval = -EINVAL;
}
return retval;
}
static int mrst_set_alarm(struct device *dev, struct rtc_wkalrm *t)
{
struct mrst_rtc *mrst = dev_get_drvdata(dev);
unsigned char hrs, min, sec;
int ret = 0;
if (!mrst->irq)
return -EIO;
hrs = t->time.tm_hour;
min = t->time.tm_min;
sec = t->time.tm_sec;
spin_lock_irq(&rtc_lock);
/* Next rtc irq must not be from previous alarm setting */
mrst_irq_disable(mrst, RTC_AIE);
/* Update alarm */
vrtc_cmos_write(hrs, RTC_HOURS_ALARM);
vrtc_cmos_write(min, RTC_MINUTES_ALARM);
vrtc_cmos_write(sec, RTC_SECONDS_ALARM);
spin_unlock_irq(&rtc_lock);
ret = intel_scu_ipc_simple_command(IPCMSG_VRTC, IPC_CMD_VRTC_SETALARM);
if (ret)
return ret;
spin_lock_irq(&rtc_lock);
if (t->enabled)
mrst_irq_enable(mrst, RTC_AIE);
spin_unlock_irq(&rtc_lock);
return 0;
}
static void mrst_irq_enable(struct mrst_rtc *mrst, unsigned char mask)
{
unsigned char rtc_control;
/*
* Flush any pending IRQ status, notably for update irqs,
* before we enable new IRQs
*/
rtc_control = vrtc_cmos_read(RTC_CONTROL);
mrst_checkintr(mrst, rtc_control);
rtc_control |= mask;
vrtc_cmos_write(rtc_control, RTC_CONTROL);
mrst_checkintr(mrst, rtc_control);
}
