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Merge branch 'timers-rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

Browse Source 
* 'timers-rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  RTC: Fix up rtc.txt documentation to reflect changes to generic rtc layer
  RTC: sa1100: Update the sa1100 RTC driver.
  RTC: Fix the cross interrupt issue on rtc-test.
  RTC: Remove UIE and PIE information from the sa1100 driver proc.
  RTC: Include information about UIE and PIE in RTC driver proc.
  RTC: Clean out UIE icotl implementations
  RTC: Cleanup rtc_class_ops->update_irq_enable()
  RTC: Cleanup rtc_class_ops->irq_set_freq()
  RTC: Cleanup rtc_class_ops->irq_set_state
  RTC: Initialize kernel state from RTC
This commit is contained in:
Linus Torvalds 2011-03-15 18:59:21 -07:00
commit 21a32816b2
36 changed files with 221 additions and 916 deletions
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29
Documentation/rtc.txt
View File

@ -178,38 +178,29 @@ RTC class framework, but can't be supported by the older driver.
setting the longer alarm time and enabling its IRQ using a single
request (using the same model as EFI firmware).
* RTC_UIE_ON, RTC_UIE_OFF ... if the RTC offers IRQs, it probably
also offers update IRQs whenever the "seconds" counter changes.
If needed, the RTC framework can emulate this mechanism.
* RTC_UIE_ON, RTC_UIE_OFF ... if the RTC offers IRQs, the RTC framework
will emulate this mechanism.
* RTC_PIE_ON, RTC_PIE_OFF, RTC_IRQP_SET, RTC_IRQP_READ ... another
feature often accessible with an IRQ line is a periodic IRQ, issued
at settable frequencies (usually 2^N Hz).
* RTC_PIE_ON, RTC_PIE_OFF, RTC_IRQP_SET, RTC_IRQP_READ ... these icotls
are emulated via a kernel hrtimer.
In many cases, the RTC alarm can be a system wake event, used to force
Linux out of a low power sleep state (or hibernation) back to a fully
operational state. For example, a system could enter a deep power saving
state until it's time to execute some scheduled tasks.
Note that many of these ioctls need not actually be implemented by your
driver. The common rtc-dev interface handles many of these nicely if your
driver returns ENOIOCTLCMD. Some common examples:
Note that many of these ioctls are handled by the common rtc-dev interface.
Some common examples:
* RTC_RD_TIME, RTC_SET_TIME: the read_time/set_time functions will be
called with appropriate values.
* RTC_ALM_SET, RTC_ALM_READ, RTC_WKALM_SET, RTC_WKALM_RD: the
set_alarm/read_alarm functions will be called.
* RTC_ALM_SET, RTC_ALM_READ, RTC_WKALM_SET, RTC_WKALM_RD: gets or sets
the alarm rtc_timer. May call the set_alarm driver function.
* RTC_IRQP_SET, RTC_IRQP_READ: the irq_set_freq function will be called
to set the frequency while the framework will handle the read for you
since the frequency is stored in the irq_freq member of the rtc_device
structure. Your driver needs to initialize the irq_freq member during
init. Make sure you check the requested frequency is in range of your
hardware in the irq_set_freq function. If it isn't, return -EINVAL. If
you cannot actually change the frequency, do not define irq_set_freq.
* RTC_IRQP_SET, RTC_IRQP_READ: These are emulated by the generic code.
* RTC_PIE_ON, RTC_PIE_OFF: the irq_set_state function will be called.
* RTC_PIE_ON, RTC_PIE_OFF: These are also emulated by the generic code.
If all else fails, check out the rtc-test.c driver!

7
drivers/rtc/class.c
View File

@ -117,6 +117,7 @@ struct rtc_device *rtc_device_register(const char *name, struct device *dev,
struct module *owner)
{
struct rtc_device *rtc;
struct rtc_wkalrm alrm;
int id, err;
if (idr_pre_get(&rtc_idr, GFP_KERNEL) == 0) {
@ -166,6 +167,12 @@ struct rtc_device *rtc_device_register(const char *name, struct device *dev,
rtc->pie_timer.function = rtc_pie_update_irq;
rtc->pie_enabled = 0;
/* Check to see if there is an ALARM already set in hw */
err = __rtc_read_alarm(rtc, &alrm);
if (!err && !rtc_valid_tm(&alrm.time))
rtc_set_alarm(rtc, &alrm);
strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
dev_set_name(&rtc->dev, "rtc%d", id);

180
drivers/rtc/interface.c
View File

@ -116,6 +116,186 @@ int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs)
}
EXPORT_SYMBOL_GPL(rtc_set_mmss);
static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
{
int err;
err = mutex_lock_interruptible(&rtc->ops_lock);
if (err)
return err;
if (rtc->ops == NULL)
err = -ENODEV;
else if (!rtc->ops->read_alarm)
err = -EINVAL;
else {
memset(alarm, 0, sizeof(struct rtc_wkalrm));
err = rtc->ops->read_alarm(rtc->dev.parent, alarm);
}
mutex_unlock(&rtc->ops_lock);
return err;
}
int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
{
int err;
struct rtc_time before, now;
int first_time = 1;
unsigned long t_now, t_alm;
enum { none, day, month, year } missing = none;
unsigned days;
/* The lower level RTC driver may return -1 in some fields,
* creating invalid alarm->time values, for reasons like:
*
* - The hardware may not be capable of filling them in;
* many alarms match only on time-of-day fields, not
* day/month/year calendar data.
*
* - Some hardware uses illegal values as "wildcard" match
* values, which non-Linux firmware (like a BIOS) may try
* to set up as e.g. "alarm 15 minutes after each hour".
* Linux uses only oneshot alarms.
*
* When we see that here, we deal with it by using values from
* a current RTC timestamp for any missing (-1) values. The
* RTC driver prevents "periodic alarm" modes.
*
* But this can be racey, because some fields of the RTC timestamp
* may have wrapped in the interval since we read the RTC alarm,
* which would lead to us inserting inconsistent values in place
* of the -1 fields.
*
* Reading the alarm and timestamp in the reverse sequence
* would have the same race condition, and not solve the issue.
*
* So, we must first read the RTC timestamp,
* then read the RTC alarm value,
* and then read a second RTC timestamp.
*
* If any fields of the second timestamp have changed
* when compared with the first timestamp, then we know
* our timestamp may be inconsistent with that used by
* the low-level rtc_read_alarm_internal() function.
*
* So, when the two timestamps disagree, we just loop and do
* the process again to get a fully consistent set of values.
*
* This could all instead be done in the lower level driver,
* but since more than one lower level RTC implementation needs it,
* then it's probably best best to do it here instead of there..
*/
/* Get the "before" timestamp */
err = rtc_read_time(rtc, &before);
if (err < 0)
return err;
do {
if (!first_time)
memcpy(&before, &now, sizeof(struct rtc_time));
first_time = 0;
/* get the RTC alarm values, which may be incomplete */
err = rtc_read_alarm_internal(rtc, alarm);
if (err)
return err;
/* full-function RTCs won't have such missing fields */
if (rtc_valid_tm(&alarm->time) == 0)
return 0;
/* get the "after" timestamp, to detect wrapped fields */
err = rtc_read_time(rtc, &now);
if (err < 0)
return err;
/* note that tm_sec is a "don't care" value here: */
} while ( before.tm_min != now.tm_min
|| before.tm_hour != now.tm_hour
|| before.tm_mon != now.tm_mon
|| before.tm_year != now.tm_year);
/* Fill in the missing alarm fields using the timestamp; we
* know there's at least one since alarm->time is invalid.
*/
if (alarm->time.tm_sec == -1)
alarm->time.tm_sec = now.tm_sec;
if (alarm->time.tm_min == -1)
alarm->time.tm_min = now.tm_min;
if (alarm->time.tm_hour == -1)
alarm->time.tm_hour = now.tm_hour;
/* For simplicity, only support date rollover for now */
if (alarm->time.tm_mday == -1) {
alarm->time.tm_mday = now.tm_mday;
missing = day;
}
if (alarm->time.tm_mon == -1) {
alarm->time.tm_mon = now.tm_mon;
if (missing == none)
missing = month;
}
if (alarm->time.tm_year == -1) {
alarm->time.tm_year = now.tm_year;
if (missing == none)
missing = year;
}
/* with luck, no rollover is needed */
rtc_tm_to_time(&now, &t_now);
rtc_tm_to_time(&alarm->time, &t_alm);
if (t_now < t_alm)
goto done;
switch (missing) {
/* 24 hour rollover ... if it's now 10am Monday, an alarm that
* that will trigger at 5am will do so at 5am Tuesday, which
* could also be in the next month or year. This is a common
* case, especially for PCs.
*/
case day:
dev_dbg(&rtc->dev, "alarm rollover: %s\n", "day");
t_alm += 24 * 60 * 60;
rtc_time_to_tm(t_alm, &alarm->time);
break;
/* Month rollover ... if it's the 31th, an alarm on the 3rd will
* be next month. An alarm matching on the 30th, 29th, or 28th
* may end up in the month after that! Many newer PCs support
* this type of alarm.
*/
case month:
dev_dbg(&rtc->dev, "alarm rollover: %s\n", "month");
do {
if (alarm->time.tm_mon < 11)
alarm->time.tm_mon++;
else {
alarm->time.tm_mon = 0;
alarm->time.tm_year++;
}
days = rtc_month_days(alarm->time.tm_mon,
alarm->time.tm_year);
} while (days < alarm->time.tm_mday);
break;
/* Year rollover ... easy except for leap years! */
case year:
dev_dbg(&rtc->dev, "alarm rollover: %s\n", "year");
do {
alarm->time.tm_year++;
} while (rtc_valid_tm(&alarm->time) != 0);
break;
default:
dev_warn(&rtc->dev, "alarm rollover not handled\n");
}
done:
return 0;
}
int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
{
int err;

28
drivers/rtc/rtc-at91rm9200.c
View File

@ -183,33 +183,6 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
return 0;
}
/*
* Handle commands from user-space
*/
static int at91_rtc_ioctl(struct device *dev, unsigned int cmd,
unsigned long arg)
{
int ret = 0;
pr_debug("%s(): cmd=%08x, arg=%08lx.\n", __func__, cmd, arg);
/* important: scrub old status before enabling IRQs */
switch (cmd) {
case RTC_UIE_OFF: /* update off */
at91_sys_write(AT91_RTC_IDR, AT91_RTC_SECEV);
break;
case RTC_UIE_ON: /* update on */
at91_sys_write(AT91_RTC_SCCR, AT91_RTC_SECEV);
at91_sys_write(AT91_RTC_IER, AT91_RTC_SECEV);
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
pr_debug("%s(): cmd=%08x\n", __func__, enabled);
@ -269,7 +242,6 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id)
}
static const struct rtc_class_ops at91_rtc_ops = {
.ioctl = at91_rtc_ioctl,
.read_time = at91_rtc_readtime,
.set_time = at91_rtc_settime,
.read_alarm = at91_rtc_readalarm,

28
drivers/rtc/rtc-at91sam9.c
View File

@ -216,33 +216,6 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
return 0;
}
/*
* Handle commands from user-space
*/
static int at91_rtc_ioctl(struct device *dev, unsigned int cmd,
unsigned long arg)
{
struct sam9_rtc *rtc = dev_get_drvdata(dev);
int ret = 0;
u32 mr = rtt_readl(rtc, MR);
dev_dbg(dev, "ioctl: cmd=%08x, arg=%08lx, mr %08x\n", cmd, arg, mr);
switch (cmd) {
case RTC_UIE_OFF: /* update off */
rtt_writel(rtc, MR, mr & ~AT91_RTT_RTTINCIEN);
break;
case RTC_UIE_ON: /* update on */
rtt_writel(rtc, MR, mr | AT91_RTT_RTTINCIEN);
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct sam9_rtc *rtc = dev_get_drvdata(dev);
@ -303,7 +276,6 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *_rtc)
}
static const struct rtc_class_ops at91_rtc_ops = {
.ioctl = at91_rtc_ioctl,
.read_time = at91_rtc_readtime,
.set_time = at91_rtc_settime,
.read_alarm = at91_rtc_readalarm,

27
drivers/rtc/rtc-bfin.c
View File

@ -240,32 +240,6 @@ static void bfin_rtc_int_set_alarm(struct bfin_rtc *rtc)
*/
bfin_rtc_int_set(rtc->rtc_alarm.tm_yday == -1 ? RTC_ISTAT_ALARM : RTC_ISTAT_ALARM_DAY);
}
static int bfin_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
struct bfin_rtc *rtc = dev_get_drvdata(dev);
int ret = 0;
dev_dbg_stamp(dev);
bfin_rtc_sync_pending(dev);
switch (cmd) {
case RTC_UIE_ON:
dev_dbg_stamp(dev);
bfin_rtc_int_set(RTC_ISTAT_SEC);
break;
case RTC_UIE_OFF:
dev_dbg_stamp(dev);
bfin_rtc_int_clear(~RTC_ISTAT_SEC);
break;
default:
dev_dbg_stamp(dev);
ret = -ENOIOCTLCMD;
}
return ret;
}
static int bfin_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
@ -358,7 +332,6 @@ static int bfin_rtc_proc(struct device *dev, struct seq_file *seq)
}
static struct rtc_class_ops bfin_rtc_ops = {
.ioctl = bfin_rtc_ioctl,
.read_time = bfin_rtc_read_time,
.set_time = bfin_rtc_set_time,
.read_alarm = bfin_rtc_read_alarm,

66
drivers/rtc/rtc-cmos.c
View File

@ -375,50 +375,6 @@ static int cmos_set_alarm(struct device *dev, struct rtc_wkalrm *t)
return 0;
}
static int cmos_irq_set_freq(struct device *dev, int freq)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
int f;
unsigned long flags;
if (!is_valid_irq(cmos->irq))
return -ENXIO;
if (!is_power_of_2(freq))
return -EINVAL;
/* 0 = no irqs; 1 = 2^15 Hz ... 15 = 2^0 Hz */
f = ffs(freq);
if (f-- > 16)
return -EINVAL;
f = 16 - f;
spin_lock_irqsave(&rtc_lock, flags);
hpet_set_periodic_freq(freq);
CMOS_WRITE(RTC_REF_CLCK_32KHZ | f, RTC_FREQ_SELECT);
spin_unlock_irqrestore(&rtc_lock, flags);
return 0;
}
static int cmos_irq_set_state(struct device *dev, int enabled)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
unsigned long flags;
if (!is_valid_irq(cmos->irq))
return -ENXIO;
spin_lock_irqsave(&rtc_lock, flags);
if (enabled)
cmos_irq_enable(cmos, RTC_PIE);
else
cmos_irq_disable(cmos, RTC_PIE);
spin_unlock_irqrestore(&rtc_lock, flags);
return 0;
}
static int cmos_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
@ -438,25 +394,6 @@ static int cmos_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static int cmos_update_irq_enable(struct device *dev, unsigned int enabled)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
unsigned long flags;
if (!is_valid_irq(cmos->irq))
return -EINVAL;
spin_lock_irqsave(&rtc_lock, flags);
if (enabled)
cmos_irq_enable(cmos, RTC_UIE);
else
cmos_irq_disable(cmos, RTC_UIE);
spin_unlock_irqrestore(&rtc_lock, flags);
return 0;
}
#if defined(CONFIG_RTC_INTF_PROC) || defined(CONFIG_RTC_INTF_PROC_MODULE)
static int cmos_procfs(struct device *dev, struct seq_file *seq)
@ -501,10 +438,7 @@ static const struct rtc_class_ops cmos_rtc_ops = {
.read_alarm = cmos_read_alarm,
.set_alarm = cmos_set_alarm,
.proc = cmos_procfs,
.irq_set_freq = cmos_irq_set_freq,
.irq_set_state = cmos_irq_set_state,
.alarm_irq_enable = cmos_alarm_irq_enable,
.update_irq_enable = cmos_update_irq_enable,
};
/*----------------------------------------------------------------*/

55
drivers/rtc/rtc-davinci.c
View File

@ -231,10 +231,6 @@ davinci_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
case RTC_WIE_OFF:
rtc_ctrl &= ~PRTCSS_RTC_CTRL_WEN;
break;
case RTC_UIE_OFF:
case RTC_UIE_ON:
ret = -ENOTTY;
break;
default:
ret = -ENOIOCTLCMD;
}
@ -473,55 +469,6 @@ static int davinci_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
return 0;
}
static int davinci_rtc_irq_set_state(struct device *dev, int enabled)
{
struct davinci_rtc *davinci_rtc = dev_get_drvdata(dev);
unsigned long flags;
u8 rtc_ctrl;
spin_lock_irqsave(&davinci_rtc_lock, flags);
rtc_ctrl = rtcss_read(davinci_rtc, PRTCSS_RTC_CTRL);
if (enabled) {
while (rtcss_read(davinci_rtc, PRTCSS_RTC_CTRL)
& PRTCSS_RTC_CTRL_WDTBUS)
cpu_relax();
rtc_ctrl |= PRTCSS_RTC_CTRL_TE;
rtcss_write(davinci_rtc, rtc_ctrl, PRTCSS_RTC_CTRL);
rtcss_write(davinci_rtc, 0x0, PRTCSS_RTC_CLKC_CNT);
rtc_ctrl |= PRTCSS_RTC_CTRL_TIEN |
PRTCSS_RTC_CTRL_TMMD |
PRTCSS_RTC_CTRL_TMRFLG;
} else
rtc_ctrl &= ~PRTCSS_RTC_CTRL_TIEN;
rtcss_write(davinci_rtc, rtc_ctrl, PRTCSS_RTC_CTRL);
spin_unlock_irqrestore(&davinci_rtc_lock, flags);
return 0;
}
static int davinci_rtc_irq_set_freq(struct device *dev, int freq)
{
struct davinci_rtc *davinci_rtc = dev_get_drvdata(dev);
unsigned long flags;
u16 tmr_counter = (0x8000 >> (ffs(freq) - 1));
spin_lock_irqsave(&davinci_rtc_lock, flags);
rtcss_write(davinci_rtc, tmr_counter & 0xFF, PRTCSS_RTC_TMR0);
rtcss_write(davinci_rtc, (tmr_counter & 0xFF00) >> 8, PRTCSS_RTC_TMR1);
spin_unlock_irqrestore(&davinci_rtc_lock, flags);
return 0;
}
static struct rtc_class_ops davinci_rtc_ops = {
.ioctl = davinci_rtc_ioctl,
.read_time = davinci_rtc_read_time,
@ -529,8 +476,6 @@ static struct rtc_class_ops davinci_rtc_ops = {
.alarm_irq_enable = davinci_rtc_alarm_irq_enable,
.read_alarm = davinci_rtc_read_alarm,
.set_alarm = davinci_rtc_set_alarm,
.irq_set_state = davinci_rtc_irq_set_state,
.irq_set_freq = davinci_rtc_irq_set_freq,
};
static int __init davinci_rtc_probe(struct platform_device *pdev)

17
drivers/rtc/rtc-ds1511.c
View File

@ -397,29 +397,12 @@ static int ds1511_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static int ds1511_rtc_update_irq_enable(struct device *dev,
unsigned int enabled)
{
struct platform_device *pdev = to_platform_device(dev);
struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
if (pdata->irq <= 0)
return -EINVAL;
if (enabled)
pdata->irqen |= RTC_UF;
else
pdata->irqen &= ~RTC_UF;
ds1511_rtc_update_alarm(pdata);
return 0;
}
static const struct rtc_class_ops ds1511_rtc_ops = {
.read_time = ds1511_rtc_read_time,
.set_time = ds1511_rtc_set_time,
.read_alarm = ds1511_rtc_read_alarm,
.set_alarm = ds1511_rtc_set_alarm,
.alarm_irq_enable = ds1511_rtc_alarm_irq_enable,
.update_irq_enable = ds1511_rtc_update_irq_enable,
};
static ssize_t

17
drivers/rtc/rtc-ds1553.c
View File

@ -227,29 +227,12 @@ static int ds1553_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static int ds1553_rtc_update_irq_enable(struct device *dev,
unsigned int enabled)
{
struct platform_device *pdev = to_platform_device(dev);
struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
if (pdata->irq <= 0)
return -EINVAL;
if (enabled)
pdata->irqen |= RTC_UF;
else
pdata->irqen &= ~RTC_UF;
ds1553_rtc_update_alarm(pdata);
return 0;
}
static const struct rtc_class_ops ds1553_rtc_ops = {
.read_time = ds1553_rtc_read_time,
.set_time = ds1553_rtc_set_time,
.read_alarm = ds1553_rtc_read_alarm,
.set_alarm = ds1553_rtc_set_alarm,
.alarm_irq_enable = ds1553_rtc_alarm_irq_enable,
.update_irq_enable = ds1553_rtc_update_irq_enable,
};
static ssize_t ds1553_nvram_read(struct file *filp, struct kobject *kobj,

18
drivers/rtc/rtc-ds3232.c
View File

@ -339,23 +339,6 @@ static int ds3232_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static int ds3232_update_irq_enable(struct device *dev, unsigned int enabled)
{
struct i2c_client *client = to_i2c_client(dev);
struct ds3232 *ds3232 = i2c_get_clientdata(client);
if (client->irq <= 0)
return -EINVAL;
if (enabled)
ds3232->rtc->irq_data |= RTC_UF;
else
ds3232->rtc->irq_data &= ~RTC_UF;
ds3232_update_alarm(client);
return 0;
}
static irqreturn_t ds3232_irq(int irq, void *dev_id)
{
struct i2c_client *client = dev_id;
@ -406,7 +389,6 @@ static const struct rtc_class_ops ds3232_rtc_ops = {
.read_alarm = ds3232_read_alarm,
.set_alarm = ds3232_set_alarm,
.alarm_irq_enable = ds3232_alarm_irq_enable,
.update_irq_enable = ds3232_update_irq_enable,
};
static int __devinit ds3232_probe(struct i2c_client *client,

7
drivers/rtc/rtc-jz4740.c
View File

@ -168,12 +168,6 @@ static int jz4740_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
return ret;
}
static int jz4740_rtc_update_irq_enable(struct device *dev, unsigned int enable)
{
struct jz4740_rtc *rtc = dev_get_drvdata(dev);
return jz4740_rtc_ctrl_set_bits(rtc, JZ_RTC_CTRL_1HZ_IRQ, enable);
}
static int jz4740_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
{
struct jz4740_rtc *rtc = dev_get_drvdata(dev);
@ -185,7 +179,6 @@ static struct rtc_class_ops jz4740_rtc_ops = {
.set_mmss = jz4740_rtc_set_mmss,
.read_alarm = jz4740_rtc_read_alarm,
.set_alarm = jz4740_rtc_set_alarm,
.update_irq_enable = jz4740_rtc_update_irq_enable,
.alarm_irq_enable = jz4740_rtc_alarm_irq_enable,
};

7
drivers/rtc/rtc-mc13xxx.c
View File

@ -282,12 +282,6 @@ static irqreturn_t mc13xxx_rtc_update_handler(int irq, void *dev)
return IRQ_HANDLED;
}
static int mc13xxx_rtc_update_irq_enable(struct device *dev,
unsigned int enabled)
{
return mc13xxx_rtc_irq_enable(dev, enabled, MC13XXX_IRQ_1HZ);
}
static int mc13xxx_rtc_alarm_irq_enable(struct device *dev,
unsigned int enabled)
{
@ -300,7 +294,6 @@ static const struct rtc_class_ops mc13xxx_rtc_ops = {
.read_alarm = mc13xxx_rtc_read_alarm,
.set_alarm = mc13xxx_rtc_set_alarm,
.alarm_irq_enable = mc13xxx_rtc_alarm_irq_enable,
.update_irq_enable = mc13xxx_rtc_update_irq_enable,
};
static irqreturn_t mc13xxx_rtc_reset_handler(int irq, void *dev)

20
drivers/rtc/rtc-mpc5121.c
View File

@ -240,32 +240,12 @@ static int mpc5121_rtc_alarm_irq_enable(struct device *dev,
return 0;
}
static int mpc5121_rtc_update_irq_enable(struct device *dev,
unsigned int enabled)
{
struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev);
struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
int val;
val = in_8(&regs->int_enable);
if (enabled)
val = (val & ~0x8) | 0x1;
else
val &= ~0x1;
out_8(&regs->int_enable, val);
return 0;
}
static const struct rtc_class_ops mpc5121_rtc_ops = {
.read_time = mpc5121_rtc_read_time,
.set_time = mpc5121_rtc_set_time,
.read_alarm = mpc5121_rtc_read_alarm,
.set_alarm = mpc5121_rtc_set_alarm,
.alarm_irq_enable = mpc5121_rtc_alarm_irq_enable,
.update_irq_enable = mpc5121_rtc_update_irq_enable,
};
static int __devinit mpc5121_rtc_probe(struct platform_device *op,

20
drivers/rtc/rtc-mrst.c
View File

@ -236,25 +236,6 @@ static int mrst_set_alarm(struct device *dev, struct rtc_wkalrm *t)
return 0;
}
static int mrst_irq_set_state(struct device *dev, int enabled)
{
struct mrst_rtc *mrst = dev_get_drvdata(dev);
unsigned long flags;
if (!mrst->irq)
return -ENXIO;
spin_lock_irqsave(&rtc_lock, flags);
if (enabled)
mrst_irq_enable(mrst, RTC_PIE);
else
mrst_irq_disable(mrst, RTC_PIE);
spin_unlock_irqrestore(&rtc_lock, flags);
return 0;
}
/* Currently, the vRTC doesn't support UIE ON/OFF */
static int mrst_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
@ -301,7 +282,6 @@ static const struct rtc_class_ops mrst_rtc_ops = {
.read_alarm = mrst_read_alarm,
.set_alarm = mrst_set_alarm,
.proc = mrst_procfs,
.irq_set_state = mrst_irq_set_state,
.alarm_irq_enable = mrst_rtc_alarm_irq_enable,
};

7
drivers/rtc/rtc-mxc.c
View File

@ -274,12 +274,6 @@ static int mxc_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static int mxc_rtc_update_irq_enable(struct device *dev, unsigned int enabled)
{
mxc_rtc_irq_enable(dev, RTC_1HZ_BIT, enabled);
return 0;
}
/*
* This function reads the current RTC time into tm in Gregorian date.
*/
@ -368,7 +362,6 @@ static struct rtc_class_ops mxc_rtc_ops = {
.read_alarm = mxc_rtc_read_alarm,
.set_alarm = mxc_rtc_set_alarm,
.alarm_irq_enable = mxc_rtc_alarm_irq_enable,
.update_irq_enable = mxc_rtc_update_irq_enable,
};
static int __init mxc_rtc_probe(struct platform_device *pdev)

15
drivers/rtc/rtc-nuc900.c
View File

@ -134,20 +134,6 @@ static void nuc900_rtc_bin2bcd(struct device *dev, struct rtc_time *settm,
gettm->bcd_hour = bin2bcd(settm->tm_hour) << 16;
}
static int nuc900_update_irq_enable(struct device *dev, unsigned int enabled)
{
struct nuc900_rtc *rtc = dev_get_drvdata(dev);
if (enabled)
__raw_writel(__raw_readl(rtc->rtc_reg + REG_RTC_RIER)|
(TICKINTENB), rtc->rtc_reg + REG_RTC_RIER);
else
__raw_writel(__raw_readl(rtc->rtc_reg + REG_RTC_RIER)&
(~TICKINTENB), rtc->rtc_reg + REG_RTC_RIER);
return 0;
}
static int nuc900_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct nuc900_rtc *rtc = dev_get_drvdata(dev);
@ -234,7 +220,6 @@ static struct rtc_class_ops nuc900_rtc_ops = {
.read_alarm = nuc900_rtc_read_alarm,
.set_alarm = nuc900_rtc_set_alarm,
.alarm_irq_enable = nuc900_alarm_irq_enable,
.update_irq_enable = nuc900_update_irq_enable,
};
static int __devinit nuc900_rtc_probe(struct platform_device *pdev)

39
drivers/rtc/rtc-omap.c
View File

@ -135,44 +135,6 @@ static irqreturn_t rtc_irq(int irq, void *rtc)
return IRQ_HANDLED;
}
#ifdef CONFIG_RTC_INTF_DEV
static int
omap_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
u8 reg;
switch (cmd) {
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) {
/* 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;
}
#else
#define omap_rtc_ioctl NULL
#endif
static int omap_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
u8 reg;
@ -313,7 +275,6 @@ static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
}
static struct rtc_class_ops omap_rtc_ops = {
.ioctl = omap_rtc_ioctl,
.read_time = omap_rtc_read_time,
.set_time = omap_rtc_set_time,
.read_alarm = omap_rtc_read_alarm,

6
drivers/rtc/rtc-pcap.c
View File

@ -131,18 +131,12 @@ static int pcap_rtc_alarm_irq_enable(struct device *dev, unsigned int en)
return pcap_rtc_irq_enable(dev, PCAP_IRQ_TODA, en);
}
static int pcap_rtc_update_irq_enable(struct device *dev, unsigned int en)
{
return pcap_rtc_irq_enable(dev, PCAP_IRQ_1HZ, en);
}
static const struct rtc_class_ops pcap_rtc_ops = {
.read_time = pcap_rtc_read_time,
.read_alarm = pcap_rtc_read_alarm,
.set_alarm = pcap_rtc_set_alarm,
.set_mmss = pcap_rtc_set_mmss,
.alarm_irq_enable = pcap_rtc_alarm_irq_enable,
.update_irq_enable = pcap_rtc_update_irq_enable,
};
static int __devinit pcap_rtc_probe(struct platform_device *pdev)

22
drivers/rtc/rtc-pcf50633.c
View File

@ -106,25 +106,6 @@ pcf50633_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static int
pcf50633_rtc_update_irq_enable(struct device *dev, unsigned int enabled)
{
struct pcf50633_rtc *rtc = dev_get_drvdata(dev);
int err;
if (enabled)
err = pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_SECOND);
else
err = pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_SECOND);
if (err < 0)
return err;
rtc->second_enabled = enabled;
return 0;
}
static int pcf50633_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct pcf50633_rtc *rtc;
@ -262,8 +243,7 @@ static struct rtc_class_ops pcf50633_rtc_ops = {
.set_time = pcf50633_rtc_set_time,
.read_alarm = pcf50633_rtc_read_alarm,
.set_alarm = pcf50633_rtc_set_alarm,
.alarm_irq_enable = pcf50633_rtc_alarm_irq_enable,
.update_irq_enable = pcf50633_rtc_update_irq_enable,
.alarm_irq_enable = pcf50633_rtc_alarm_irq_enable,
};
static void pcf50633_rtc_irq(int irq, void *data)

6
drivers/rtc/rtc-pl030.c
View File

@ -35,11 +35,6 @@ static irqreturn_t pl030_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static int pl030_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
return -ENOIOCTLCMD;
}
static int pl030_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct pl030_rtc *rtc = dev_get_drvdata(dev);
@ -96,7 +91,6 @@ static int pl030_set_time(struct device *dev, struct rtc_time *tm)
}
static const struct rtc_class_ops pl030_ops = {
.ioctl = pl030_ioctl,
.read_time = pl030_read_time,
.set_time = pl030_set_time,
.read_alarm = pl030_read_alarm,

55
drivers/rtc/rtc-pl031.c
View File

@ -293,57 +293,6 @@ static int pl031_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
return ret;
}
/* Periodic interrupt is only available in ST variants. */
static int pl031_irq_set_state(struct device *dev, int enabled)
{
struct pl031_local *ldata = dev_get_drvdata(dev);
if (enabled == 1) {
/* Clear any pending timer interrupt. */
writel(RTC_BIT_PI, ldata->base + RTC_ICR);
writel(readl(ldata->base + RTC_IMSC) | RTC_BIT_PI,
ldata->base + RTC_IMSC);
/* Now start the timer */
writel(readl(ldata->base + RTC_TCR) | RTC_TCR_EN,
ldata->base + RTC_TCR);
} else {
writel(readl(ldata->base + RTC_IMSC) & (~RTC_BIT_PI),
ldata->base + RTC_IMSC);
/* Also stop the timer */
writel(readl(ldata->base + RTC_TCR) & (~RTC_TCR_EN),
ldata->base + RTC_TCR);
}
/* Wait at least 1 RTC32 clock cycle to ensure next access
* to RTC_TCR will succeed.
*/
udelay(40);
return 0;
}
static int pl031_irq_set_freq(struct device *dev, int freq)
{
struct pl031_local *ldata = dev_get_drvdata(dev);
/* Cant set timer if it is already enabled */
if (readl(ldata->base + RTC_TCR) & RTC_TCR_EN) {
dev_err(dev, "can't change frequency while timer enabled\n");
return -EINVAL;
}
/* If self start bit in RTC_TCR is set timer will start here,
* but we never set that bit. Instead we start the timer when
* set_state is called with enabled == 1.
*/
writel(RTC_TIMER_FREQ / freq, ldata->base + RTC_TLR);
return 0;
}
static int pl031_remove(struct amba_device *adev)
{
struct pl031_local *ldata = dev_get_drvdata(&adev->dev);
@ -440,8 +389,6 @@ static struct rtc_class_ops stv1_pl031_ops = {
.read_alarm = pl031_read_alarm,
.set_alarm = pl031_set_alarm,
.alarm_irq_enable = pl031_alarm_irq_enable,
.irq_set_state = pl031_irq_set_state,
.irq_set_freq = pl031_irq_set_freq,
};
/* And the second ST derivative */
@ -451,8 +398,6 @@ static struct rtc_class_ops stv2_pl031_ops = {
.read_alarm = pl031_stv2_read_alarm,
.set_alarm = pl031_stv2_set_alarm,
.alarm_irq_enable = pl031_alarm_irq_enable,
.irq_set_state = pl031_irq_set_state,
.irq_set_freq = pl031_irq_set_freq,
};
static struct amba_id pl031_ids[] = {

8
drivers/rtc/rtc-proc.c
View File

@ -69,6 +69,14 @@ static int rtc_proc_show(struct seq_file *seq, void *offset)
alrm.enabled ? "yes" : "no");
seq_printf(seq, "alrm_pending\t: %s\n",
alrm.pending ? "yes" : "no");
seq_printf(seq, "update IRQ enabled\t: %s\n",
(rtc->uie_rtctimer.enabled) ? "yes" : "no");
seq_printf(seq, "periodic IRQ enabled\t: %s\n",
(rtc->pie_enabled) ? "yes" : "no");
seq_printf(seq, "periodic IRQ frequency\t: %d\n",
rtc->irq_freq);
seq_printf(seq, "max user IRQ frequency\t: %d\n",
rtc->max_user_freq);
}
seq_printf(seq, "24hr\t\t: yes\n");

44
drivers/rtc/rtc-pxa.c
View File

@ -209,32 +209,6 @@ static void pxa_rtc_release(struct device *dev)
free_irq(pxa_rtc->irq_1Hz, dev);
}
static int pxa_periodic_irq_set_freq(struct device *dev, int freq)
{
struct pxa_rtc *pxa_rtc = dev_get_drvdata(dev);
int period_ms;
if (freq < 1 || freq > MAXFREQ_PERIODIC)
return -EINVAL;
period_ms = 1000 / freq;
rtc_writel(pxa_rtc, PIAR, period_ms);
return 0;
}
static int pxa_periodic_irq_set_state(struct device *dev, int enabled)
{
struct pxa_rtc *pxa_rtc = dev_get_drvdata(dev);
if (enabled)
rtsr_set_bits(pxa_rtc, RTSR_PIALE | RTSR_PICE);
else
rtsr_clear_bits(pxa_rtc, RTSR_PIALE | RTSR_PICE);
return 0;
}
static int pxa_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct pxa_rtc *pxa_rtc = dev_get_drvdata(dev);
@ -250,21 +224,6 @@ static int pxa_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static int pxa_update_irq_enable(struct device *dev, unsigned int enabled)
{
struct pxa_rtc *pxa_rtc = dev_get_drvdata(dev);
spin_lock_irq(&pxa_rtc->lock);
if (enabled)
rtsr_set_bits(pxa_rtc, RTSR_HZE);
else
rtsr_clear_bits(pxa_rtc, RTSR_HZE);
spin_unlock_irq(&pxa_rtc->lock);
return 0;
}
static int pxa_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct pxa_rtc *pxa_rtc = dev_get_drvdata(dev);
@ -346,10 +305,7 @@ static const struct rtc_class_ops pxa_rtc_ops = {
.read_alarm = pxa_rtc_read_alarm,
.set_alarm = pxa_rtc_set_alarm,
.alarm_irq_enable = pxa_alarm_irq_enable,
.update_irq_enable = pxa_update_irq_enable,
.proc = pxa_rtc_proc,
.irq_set_state = pxa_periodic_irq_set_state,
.irq_set_freq = pxa_periodic_irq_set_freq,
};
static int __init pxa_rtc_probe(struct platform_device *pdev)

52
drivers/rtc/rtc-rs5c372.c
View File

@ -281,57 +281,6 @@ static int rs5c372_rtc_set_time(struct device *dev, struct rtc_time *tm)
return rs5c372_set_datetime(to_i2c_client(dev), tm);
}
#if defined(CONFIG_RTC_INTF_DEV) || defined(CONFIG_RTC_INTF_DEV_MODULE)
static int
rs5c_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
struct i2c_client *client = to_i2c_client(dev);
struct rs5c372 *rs5c = i2c_get_clientdata(client);
unsigned char buf;
int status, addr;
buf = rs5c->regs[RS5C_REG_CTRL1];
switch (cmd) {
case RTC_UIE_OFF:
case RTC_UIE_ON:
/* some 327a modes use a different IRQ pin for 1Hz irqs */
if (rs5c->type == rtc_rs5c372a
&& (buf & RS5C372A_CTRL1_SL1))
return -ENOIOCTLCMD;
default:
return -ENOIOCTLCMD;
}
status = rs5c_get_regs(rs5c);
if (status < 0)
return status;
addr = RS5C_ADDR(RS5C_REG_CTRL1);
switch (cmd) {
case RTC_UIE_OFF: /* update off */
buf &= ~RS5C_CTRL1_CT_MASK;
break;
case RTC_UIE_ON: /* update on */
buf &= ~RS5C_CTRL1_CT_MASK;
buf |= RS5C_CTRL1_CT4;
break;
}
if (i2c_smbus_write_byte_data(client, addr, buf) < 0) {
printk(KERN_WARNING "%s: can't update alarm\n",
rs5c->rtc->name);
status = -EIO;
} else
rs5c->regs[RS5C_REG_CTRL1] = buf;
return status;
}
#else
#define rs5c_rtc_ioctl NULL
#endif
static int rs5c_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
@ -480,7 +429,6 @@ static int rs5c372_rtc_proc(struct device *dev, struct seq_file *seq)
static const struct rtc_class_ops rs5c372_rtc_ops = {
.proc = rs5c372_rtc_proc,
.ioctl = rs5c_rtc_ioctl,
.read_time = rs5c372_rtc_read_time,
.set_time = rs5c372_rtc_set_time,
.read_alarm = rs5c_read_alarm,

25
drivers/rtc/rtc-rx8025.c
View File

@ -424,37 +424,12 @@ static int rx8025_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static int rx8025_irq_set_state(struct device *dev, int enabled)
{
struct i2c_client *client = to_i2c_client(dev);
struct rx8025_data *rx8025 = i2c_get_clientdata(client);
int ctrl1;
int err;
if (client->irq <= 0)
return -ENXIO;
ctrl1 = rx8025->ctrl1 & ~RX8025_BIT_CTRL1_CT;
if (enabled)
ctrl1 |= RX8025_BIT_CTRL1_CT_1HZ;
if (ctrl1 != rx8025->ctrl1) {
rx8025->ctrl1 = ctrl1;
err = rx8025_write_reg(rx8025->client, RX8025_REG_CTRL1,
rx8025->ctrl1);
if (err)
return err;
}
return 0;
}
static struct rtc_class_ops rx8025_rtc_ops = {
.read_time = rx8025_get_time,
.set_time = rx8025_set_time,
.read_alarm = rx8025_read_alarm,
.set_alarm = rx8025_set_alarm,
.alarm_irq_enable = rx8025_alarm_irq_enable,
.irq_set_state = rx8025_irq_set_state,
};
/*

33
drivers/rtc/rtc-s3c.c
View File

@ -93,37 +93,6 @@ static int s3c_rtc_setaie(struct device *dev, unsigned int enabled)
return 0;
}
static int s3c_rtc_setpie(struct device *dev, int enabled)
{
unsigned int tmp;
pr_debug("%s: pie=%d\n", __func__, enabled);
spin_lock_irq(&s3c_rtc_pie_lock);
if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
tmp = readw(s3c_rtc_base + S3C2410_RTCCON);
tmp &= ~S3C64XX_RTCCON_TICEN;
if (enabled)
tmp |= S3C64XX_RTCCON_TICEN;
writew(tmp, s3c_rtc_base + S3C2410_RTCCON);
} else {
tmp = readb(s3c_rtc_base + S3C2410_TICNT);
tmp &= ~S3C2410_TICNT_ENABLE;
if (enabled)
tmp |= S3C2410_TICNT_ENABLE;
writeb(tmp, s3c_rtc_base + S3C2410_TICNT);
}
spin_unlock_irq(&s3c_rtc_pie_lock);
return 0;
}
static int s3c_rtc_setfreq(struct device *dev, int freq)
{
struct platform_device *pdev = to_platform_device(dev);
@ -379,8 +348,6 @@ static const struct rtc_class_ops s3c_rtcops = {
.set_time = s3c_rtc_settime,
.read_alarm = s3c_rtc_getalarm,
.set_alarm = s3c_rtc_setalarm,
.irq_set_freq = s3c_rtc_setfreq,
.irq_set_state = s3c_rtc_setpie,
.proc = s3c_rtc_proc,
.alarm_irq_enable = s3c_rtc_setaie,
};

160
drivers/rtc/rtc-sa1100.c
View File

@ -43,7 +43,6 @@
#define RTC_DEF_TRIM 0
static const unsigned long RTC_FREQ = 1024;
static unsigned long timer_freq;
static struct rtc_time rtc_alarm;
static DEFINE_SPINLOCK(sa1100_rtc_lock);
@ -156,114 +155,11 @@ static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static int sa1100_irq_set_freq(struct device *dev, int freq)
{
if (freq < 1 || freq > timer_freq) {
return -EINVAL;
} else {
struct rtc_device *rtc = (struct rtc_device *)dev;
rtc->irq_freq = freq;
return 0;
}
}
static int rtc_timer1_count;
static int sa1100_irq_set_state(struct device *dev, int enabled)
{
spin_lock_irq(&sa1100_rtc_lock);
if (enabled) {
struct rtc_device *rtc = (struct rtc_device *)dev;
OSMR1 = timer_freq / rtc->irq_freq + OSCR;
OIER |= OIER_E1;
rtc_timer1_count = 1;
} else {
OIER &= ~OIER_E1;
}
spin_unlock_irq(&sa1100_rtc_lock);
return 0;
}
static inline int sa1100_timer1_retrigger(struct rtc_device *rtc)
{
unsigned long diff;
unsigned long period = timer_freq / rtc->irq_freq;
spin_lock_irq(&sa1100_rtc_lock);
do {
OSMR1 += period;
diff = OSMR1 - OSCR;
/* If OSCR > OSMR1, diff is a very large number (unsigned
* math). This means we have a lost interrupt. */
} while (diff > period);
OIER |= OIER_E1;
spin_unlock_irq(&sa1100_rtc_lock);
return 0;
}
static irqreturn_t timer1_interrupt(int irq, void *dev_id)
{
struct platform_device *pdev = to_platform_device(dev_id);
struct rtc_device *rtc = platform_get_drvdata(pdev);
/*
* If we match for the first time, rtc_timer1_count will be 1.
* Otherwise, we wrapped around (very unlikely but
* still possible) so compute the amount of missed periods.
* The match reg is updated only when the data is actually retrieved
* to avoid unnecessary interrupts.
*/
OSSR = OSSR_M1; /* clear match on timer1 */
rtc_update_irq(rtc, rtc_timer1_count, RTC_PF | RTC_IRQF);
if (rtc_timer1_count == 1)
rtc_timer1_count =
(rtc->irq_freq * ((1 << 30) / (timer_freq >> 2)));
/* retrigger. */
sa1100_timer1_retrigger(rtc);
return IRQ_HANDLED;
}
static int sa1100_rtc_read_callback(struct device *dev, int data)
{
if (data & RTC_PF) {
struct rtc_device *rtc = (struct rtc_device *)dev;
/* interpolate missed periods and set match for the next */
unsigned long period = timer_freq / rtc->irq_freq;
unsigned long oscr = OSCR;
unsigned long osmr1 = OSMR1;
unsigned long missed = (oscr - osmr1)/period;
data += missed << 8;
OSSR = OSSR_M1; /* clear match on timer 1 */
OSMR1 = osmr1 + (missed + 1)*period;
/* Ensure we didn't miss another match in the mean time.
* Here we compare (match - OSCR) 8 instead of 0 --
* see comment in pxa_timer_interrupt() for explanation.
*/
while ((signed long)((osmr1 = OSMR1) - OSCR) <= 8) {
data += 0x100;
OSSR = OSSR_M1; /* clear match on timer 1 */
OSMR1 = osmr1 + period;
}
}
return data;
}
static int sa1100_rtc_open(struct device *dev)
{
int ret;
struct rtc_device *rtc = (struct rtc_device *)dev;
struct platform_device *plat_dev = to_platform_device(dev);
struct rtc_device *rtc = platform_get_drvdata(plat_dev);
ret = request_irq(IRQ_RTC1Hz, sa1100_rtc_interrupt, IRQF_DISABLED,
"rtc 1Hz", dev);
@ -277,19 +173,11 @@ static int sa1100_rtc_open(struct device *dev)
dev_err(dev, "IRQ %d already in use.\n", IRQ_RTCAlrm);
goto fail_ai;
}
ret = request_irq(IRQ_OST1, timer1_interrupt, IRQF_DISABLED,
"rtc timer", dev);
if (ret) {
dev_err(dev, "IRQ %d already in use.\n", IRQ_OST1);
goto fail_pi;
}
rtc->max_user_freq = RTC_FREQ;
sa1100_irq_set_freq(dev, RTC_FREQ);
rtc_irq_set_freq(rtc, NULL, RTC_FREQ);
return 0;
fail_pi:
free_irq(IRQ_RTCAlrm, dev);
fail_ai:
free_irq(IRQ_RTC1Hz, dev);
fail_ui:
@ -304,30 +192,10 @@ static void sa1100_rtc_release(struct device *dev)
OSSR = OSSR_M1;
spin_unlock_irq(&sa1100_rtc_lock);
free_irq(IRQ_OST1, dev);
free_irq(IRQ_RTCAlrm, dev);
free_irq(IRQ_RTC1Hz, dev);
}
static int sa1100_rtc_ioctl(struct device *dev, unsigned int cmd,
unsigned long arg)
{
switch (cmd) {
case RTC_UIE_OFF:
spin_lock_irq(&sa1100_rtc_lock);
RTSR &= ~RTSR_HZE;
spin_unlock_irq(&sa1100_rtc_lock);
return 0;
case RTC_UIE_ON:
spin_lock_irq(&sa1100_rtc_lock);
RTSR |= RTSR_HZE;
spin_unlock_irq(&sa1100_rtc_lock);
return 0;
}
return -ENOIOCTLCMD;
}
static int sa1100_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
spin_lock_irq(&sa1100_rtc_lock);
@ -386,31 +254,20 @@ static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
static int sa1100_rtc_proc(struct device *dev, struct seq_file *seq)
{
struct rtc_device *rtc = (struct rtc_device *)dev;
seq_printf(seq, "trim/divider\t: 0x%08x\n", (u32) RTTR);
seq_printf(seq, "update_IRQ\t: %s\n",
(RTSR & RTSR_HZE) ? "yes" : "no");
seq_printf(seq, "periodic_IRQ\t: %s\n",
(OIER & OIER_E1) ? "yes" : "no");
seq_printf(seq, "periodic_freq\t: %d\n", rtc->irq_freq);
seq_printf(seq, "RTSR\t\t: 0x%08x\n", (u32)RTSR);
seq_printf(seq, "trim/divider\t\t: 0x%08x\n", (u32) RTTR);
seq_printf(seq, "RTSR\t\t\t: 0x%08x\n", (u32)RTSR);
return 0;
}
static const struct rtc_class_ops sa1100_rtc_ops = {
.open = sa1100_rtc_open,
.read_callback = sa1100_rtc_read_callback,
.release = sa1100_rtc_release,
.ioctl = sa1100_rtc_ioctl,
.read_time = sa1100_rtc_read_time,
.set_time = sa1100_rtc_set_time,
.read_alarm = sa1100_rtc_read_alarm,
.set_alarm = sa1100_rtc_set_alarm,
.proc = sa1100_rtc_proc,
.irq_set_freq = sa1100_irq_set_freq,
.irq_set_state = sa1100_irq_set_state,
.alarm_irq_enable = sa1100_rtc_alarm_irq_enable,
};
@ -418,8 +275,6 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc;
timer_freq = get_clock_tick_rate();
/*
* According to the manual we should be able to let RTTR be zero
* and then a default diviser for a 32.768KHz clock is used.
@ -445,11 +300,6 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, rtc);
/* Set the irq_freq */
/*TODO: Find out who is messing with this value after we initialize
* it here.*/
rtc->irq_freq = RTC_FREQ;
/* Fix for a nasty initialization problem the in SA11xx RTSR register.
* See also the comments in sa1100_rtc_interrupt().
*

24
drivers/rtc/rtc-sh.c
View File

@ -344,27 +344,6 @@ static inline void sh_rtc_setcie(struct device *dev, unsigned int enable)
spin_unlock_irq(&rtc->lock);
}
static int sh_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
struct sh_rtc *rtc = dev_get_drvdata(dev);
unsigned int ret = 0;
switch (cmd) {
case RTC_UIE_OFF:
rtc->periodic_freq &= ~PF_OXS;
sh_rtc_setcie(dev, 0);
break;
case RTC_UIE_ON:
rtc->periodic_freq |= PF_OXS;
sh_rtc_setcie(dev, 1);
break;
default:
ret = -ENOIOCTLCMD;
}
return ret;
}
static int sh_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
sh_rtc_setaie(dev, enabled);
@ -598,13 +577,10 @@ static int sh_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
}
static struct rtc_class_ops sh_rtc_ops = {
.ioctl = sh_rtc_ioctl,
.read_time = sh_rtc_read_time,
.set_time = sh_rtc_set_time,
.read_alarm = sh_rtc_read_alarm,
.set_alarm = sh_rtc_set_alarm,
.irq_set_state = sh_rtc_irq_set_state,
.irq_set_freq = sh_rtc_irq_set_freq,
.proc = sh_rtc_proc,
.alarm_irq_enable = sh_rtc_alarm_irq_enable,
};

15
drivers/rtc/rtc-stmp3xxx.c
View File

@ -115,19 +115,6 @@ static int stmp3xxx_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static int stmp3xxx_update_irq_enable(struct device *dev, unsigned int enabled)
{
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);
if (enabled)
stmp3xxx_setl(BM_RTC_CTRL_ONEMSEC_IRQ_EN,
rtc_data->io + HW_RTC_CTRL);
else
stmp3xxx_clearl(BM_RTC_CTRL_ONEMSEC_IRQ_EN,
rtc_data->io + HW_RTC_CTRL);
return 0;
}
static int stmp3xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);
@ -149,8 +136,6 @@ static int stmp3xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
static struct rtc_class_ops stmp3xxx_rtc_ops = {
.alarm_irq_enable =
stmp3xxx_alarm_irq_enable,
.update_irq_enable =
stmp3xxx_update_irq_enable,
.read_time = stmp3xxx_rtc_gettime,
.set_mmss = stmp3xxx_rtc_set_mmss,
.read_alarm = stmp3xxx_rtc_read_alarm,

13
drivers/rtc/rtc-test.c
View File

@ -78,11 +78,16 @@ static ssize_t test_irq_store(struct device *dev,
struct rtc_device *rtc = platform_get_drvdata(plat_dev);
retval = count;
if (strncmp(buf, "tick", 4) == 0)
if (strncmp(buf, "tick", 4) == 0 && rtc->pie_enabled)
rtc_update_irq(rtc, 1, RTC_PF | RTC_IRQF);
else if (strncmp(buf, "alarm", 5) == 0)
rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF);
else if (strncmp(buf, "update", 6) == 0)
else if (strncmp(buf, "alarm", 5) == 0) {
struct rtc_wkalrm alrm;
int err = rtc_read_alarm(rtc, &alrm);
if (!err && alrm.enabled)
rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF);
} else if (strncmp(buf, "update", 6) == 0 && rtc->uie_rtctimer.enabled)
rtc_update_irq(rtc, 1, RTC_UF | RTC_IRQF);
else
retval = -EINVAL;

13
drivers/rtc/rtc-twl.c
View File

@ -213,18 +213,6 @@ static int twl_rtc_alarm_irq_enable(struct device *dev, unsigned enabled)
return ret;
}
static int twl_rtc_update_irq_enable(struct device *dev, unsigned enabled)
{
int ret;
if (enabled)
ret = set_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
else
ret = mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
return ret;
}
/*
* Gets current TWL RTC time and date parameters.
*
@ -433,7 +421,6 @@ static struct rtc_class_ops twl_rtc_ops = {
.read_alarm = twl_rtc_read_alarm,
.set_alarm = twl_rtc_set_alarm,
.alarm_irq_enable = twl_rtc_alarm_irq_enable,
.update_irq_enable = twl_rtc_update_irq_enable,
};
/*----------------------------------------------------------------------*/

32
drivers/rtc/rtc-vr41xx.c
View File

@ -207,36 +207,6 @@ static int vr41xx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
return 0;
}
static int vr41xx_rtc_irq_set_freq(struct device *dev, int freq)
{
u64 count;
if (!is_power_of_2(freq))
return -EINVAL;
count = RTC_FREQUENCY;
do_div(count, freq);
spin_lock_irq(&rtc_lock);
periodic_count = count;
rtc1_write(RTCL1LREG, periodic_count);
rtc1_write(RTCL1HREG, periodic_count >> 16);
spin_unlock_irq(&rtc_lock);
return 0;
}
static int vr41xx_rtc_irq_set_state(struct device *dev, int enabled)
{
if (enabled)
enable_irq(pie_irq);
else
disable_irq(pie_irq);
return 0;
}
static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{
switch (cmd) {
@ -308,8 +278,6 @@ static const struct rtc_class_ops vr41xx_rtc_ops = {
.set_time = vr41xx_rtc_set_time,
.read_alarm = vr41xx_rtc_read_alarm,
.set_alarm = vr41xx_rtc_set_alarm,
.irq_set_freq = vr41xx_rtc_irq_set_freq,
.irq_set_state = vr41xx_rtc_irq_set_state,
};
static int __devinit rtc_probe(struct platform_device *pdev)

16
drivers/rtc/rtc-wm831x.c
View File

@ -315,21 +315,6 @@ static int wm831x_rtc_alarm_irq_enable(struct device *dev,
return wm831x_rtc_stop_alarm(wm831x_rtc);
}
static int wm831x_rtc_update_irq_enable(struct device *dev,
unsigned int enabled)
{
struct wm831x_rtc *wm831x_rtc = dev_get_drvdata(dev);
int val;
if (enabled)
val = 1 << WM831X_RTC_PINT_FREQ_SHIFT;
else
val = 0;
return wm831x_set_bits(wm831x_rtc->wm831x, WM831X_RTC_CONTROL,
WM831X_RTC_PINT_FREQ_MASK, val);
}
static irqreturn_t wm831x_alm_irq(int irq, void *data)
{
struct wm831x_rtc *wm831x_rtc = data;
@ -354,7 +339,6 @@ static const struct rtc_class_ops wm831x_rtc_ops = {
.read_alarm = wm831x_rtc_readalarm,
.set_alarm = wm831x_rtc_setalarm,
.alarm_irq_enable = wm831x_rtc_alarm_irq_enable,
.update_irq_enable = wm831x_rtc_update_irq_enable,
};
#ifdef CONFIG_PM

21
drivers/rtc/rtc-wm8350.c
View File

@ -302,26 +302,6 @@ static int wm8350_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
return ret;
}
static int wm8350_rtc_update_irq_enable(struct device *dev,
unsigned int enabled)
{
struct wm8350 *wm8350 = dev_get_drvdata(dev);
/* Suppress duplicate changes since genirq nests enable and
* disable calls. */
if (enabled == wm8350->rtc.update_enabled)
return 0;
if (enabled)
wm8350_unmask_irq(wm8350, WM8350_IRQ_RTC_SEC);
else
wm8350_mask_irq(wm8350, WM8350_IRQ_RTC_SEC);
wm8350->rtc.update_enabled = enabled;
return 0;
}
static irqreturn_t wm8350_rtc_alarm_handler(int irq, void *data)
{
struct wm8350 *wm8350 = data;
@ -357,7 +337,6 @@ static const struct rtc_class_ops wm8350_rtc_ops = {
.read_alarm = wm8350_rtc_readalarm,
.set_alarm = wm8350_rtc_setalarm,
.alarm_irq_enable = wm8350_rtc_alarm_irq_enable,
.update_irq_enable = wm8350_rtc_update_irq_enable,
};
#ifdef CONFIG_PM

5
include/linux/rtc.h
View File

@ -133,7 +133,6 @@ extern struct class *rtc_class;
* The (current) exceptions are mostly filesystem hooks:
* - the proc() hook for procfs
* - non-ioctl() chardev hooks: open(), release(), read_callback()
* - periodic irq calls: irq_set_state(), irq_set_freq()
*
* REVISIT those periodic irq calls *do* have ops_lock when they're
* issued through ioctl() ...
@ -148,11 +147,8 @@ struct rtc_class_ops {
int (*set_alarm)(struct device *, struct rtc_wkalrm *);
int (*proc)(struct device *, struct seq_file *);
int (*set_mmss)(struct device *, unsigned long secs);
int (*irq_set_state)(struct device *, int enabled);
int (*irq_set_freq)(struct device *, int freq);
int (*read_callback)(struct device *, int data);
int (*alarm_irq_enable)(struct device *, unsigned int enabled);
int (*update_irq_enable)(struct device *, unsigned int enabled);
};
#define RTC_DEVICE_NAME_SIZE 20
@ -227,6 +223,7 @@ extern void rtc_device_unregister(struct rtc_device *rtc);
extern int rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm);
extern int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm);
extern int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs);
int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm);
extern int rtc_read_alarm(struct rtc_device *rtc,
struct rtc_wkalrm *alrm);
extern int rtc_set_alarm(struct rtc_device *rtc,