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path: root/drivers/rtc/rtc-ds1511.c
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Diffstat (limited to 'drivers/rtc/rtc-ds1511.c')
-rw-r--r--drivers/rtc/rtc-ds1511.c93
1 files changed, 44 insertions, 49 deletions
diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 6ce8a997cf5..308a8fefe76 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -104,31 +104,31 @@ static DEFINE_SPINLOCK(ds1511_lock);
static __iomem char *ds1511_base;
static u32 reg_spacing = 1;
- static noinline void
+static noinline void
rtc_write(uint8_t val, uint32_t reg)
{
writeb(val, ds1511_base + (reg * reg_spacing));
}
- static inline void
+static inline void
rtc_write_alarm(uint8_t val, enum ds1511reg reg)
{
rtc_write((val | 0x80), reg);
}
- static noinline uint8_t
+static noinline uint8_t
rtc_read(enum ds1511reg reg)
{
return readb(ds1511_base + (reg * reg_spacing));
}
- static inline void
+static inline void
rtc_disable_update(void)
{
rtc_write((rtc_read(RTC_CMD) & ~RTC_TE), RTC_CMD);
}
- static void
+static void
rtc_enable_update(void)
{
rtc_write((rtc_read(RTC_CMD) | RTC_TE), RTC_CMD);
@@ -145,7 +145,7 @@ rtc_enable_update(void)
* just enough code to set the watchdog timer so that it
* will reboot the system
*/
- void
+void
ds1511_wdog_set(unsigned long deciseconds)
{
/*
@@ -163,7 +163,7 @@ ds1511_wdog_set(unsigned long deciseconds)
rtc_write(DS1511_WDE | DS1511_WDS, RTC_CMD);
}
- void
+void
ds1511_wdog_disable(void)
{
/*
@@ -191,13 +191,12 @@ static int ds1511_rtc_set_time(struct device *dev, struct rtc_time *rtc_tm)
/*
* won't have to change this for a while
*/
- if (rtc_tm->tm_year < 1900) {
+ if (rtc_tm->tm_year < 1900)
rtc_tm->tm_year += 1900;
- }
- if (rtc_tm->tm_year < 1970) {
+ if (rtc_tm->tm_year < 1970)
return -EINVAL;
- }
+
yrs = rtc_tm->tm_year % 100;
cen = rtc_tm->tm_year / 100;
mon = rtc_tm->tm_mon + 1; /* tm_mon starts at zero */
@@ -207,17 +206,14 @@ static int ds1511_rtc_set_time(struct device *dev, struct rtc_time *rtc_tm)
min = rtc_tm->tm_min;
sec = rtc_tm->tm_sec;
- if ((mon > 12) || (day == 0)) {
+ if ((mon > 12) || (day == 0))
return -EINVAL;
- }
- if (day > rtc_month_days(rtc_tm->tm_mon, rtc_tm->tm_year)) {
+ if (day > rtc_month_days(rtc_tm->tm_mon, rtc_tm->tm_year))
return -EINVAL;
- }
- if ((hrs >= 24) || (min >= 60) || (sec >= 60)) {
+ if ((hrs >= 24) || (min >= 60) || (sec >= 60))
return -EINVAL;
- }
/*
* each register is a different number of valid bits
@@ -299,7 +295,7 @@ static int ds1511_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm)
* date/hours/mins/secs matches. the ds1511 has many more
* permutations, but the kernel doesn't.
*/
- static void
+static void
ds1511_rtc_update_alarm(struct rtc_plat_data *pdata)
{
unsigned long flags;
@@ -322,7 +318,7 @@ ds1511_rtc_update_alarm(struct rtc_plat_data *pdata)
spin_unlock_irqrestore(&pdata->lock, flags);
}
- static int
+static int
ds1511_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct platform_device *pdev = to_platform_device(dev);
@@ -335,14 +331,14 @@ ds1511_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
pdata->alrm_hour = alrm->time.tm_hour;
pdata->alrm_min = alrm->time.tm_min;
pdata->alrm_sec = alrm->time.tm_sec;
- if (alrm->enabled) {
+ if (alrm->enabled)
pdata->irqen |= RTC_AF;
- }
+
ds1511_rtc_update_alarm(pdata);
return 0;
}
- static int
+static int
ds1511_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct platform_device *pdev = to_platform_device(dev);
@@ -359,7 +355,7 @@ ds1511_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
return 0;
}
- static irqreturn_t
+static irqreturn_t
ds1511_interrupt(int irq, void *dev_id)
{
struct platform_device *pdev = dev_id;
@@ -406,7 +402,7 @@ static const struct rtc_class_ops ds1511_rtc_ops = {
.alarm_irq_enable = ds1511_rtc_alarm_irq_enable,
};
- static ssize_t
+static ssize_t
ds1511_nvram_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *ba,
char *buf, loff_t pos, size_t size)
@@ -417,26 +413,26 @@ ds1511_nvram_read(struct file *filp, struct kobject *kobj,
* if count is more than one, turn on "burst" mode
* turn it off when you're done
*/
- if (size > 1) {
+ if (size > 1)
rtc_write((rtc_read(RTC_CMD) | DS1511_BME), RTC_CMD);
- }
- if (pos > DS1511_RAM_MAX) {
+
+ if (pos > DS1511_RAM_MAX)
pos = DS1511_RAM_MAX;
- }
- if (size + pos > DS1511_RAM_MAX + 1) {
+
+ if (size + pos > DS1511_RAM_MAX + 1)
size = DS1511_RAM_MAX - pos + 1;
- }
+
rtc_write(pos, DS1511_RAMADDR_LSB);
- for (count = 0; size > 0; count++, size--) {
+ for (count = 0; size > 0; count++, size--)
*buf++ = rtc_read(DS1511_RAMDATA);
- }
- if (count > 1) {
+
+ if (count > 1)
rtc_write((rtc_read(RTC_CMD) & ~DS1511_BME), RTC_CMD);
- }
+
return count;
}
- static ssize_t
+static ssize_t
ds1511_nvram_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t pos, size_t size)
@@ -447,22 +443,22 @@ ds1511_nvram_write(struct file *filp, struct kobject *kobj,
* if count is more than one, turn on "burst" mode
* turn it off when you're done
*/
- if (size > 1) {
+ if (size > 1)
rtc_write((rtc_read(RTC_CMD) | DS1511_BME), RTC_CMD);
- }
- if (pos > DS1511_RAM_MAX) {
+
+ if (pos > DS1511_RAM_MAX)
pos = DS1511_RAM_MAX;
- }
- if (size + pos > DS1511_RAM_MAX + 1) {
+
+ if (size + pos > DS1511_RAM_MAX + 1)
size = DS1511_RAM_MAX - pos + 1;
- }
+
rtc_write(pos, DS1511_RAMADDR_LSB);
- for (count = 0; size > 0; count++, size--) {
+ for (count = 0; size > 0; count++, size--)
rtc_write(*buf++, DS1511_RAMDATA);
- }
- if (count > 1) {
+
+ if (count > 1)
rtc_write((rtc_read(RTC_CMD) & ~DS1511_BME), RTC_CMD);
- }
+
return count;
}
@@ -484,9 +480,9 @@ static int ds1511_rtc_probe(struct platform_device *pdev)
int ret = 0;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
+ if (!res)
return -ENODEV;
- }
+
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
@@ -518,9 +514,8 @@ static int ds1511_rtc_probe(struct platform_device *pdev)
/*
* check for a dying bat-tree
*/
- if (rtc_read(RTC_CMD1) & DS1511_BLF1) {
+ if (rtc_read(RTC_CMD1) & DS1511_BLF1)
dev_warn(&pdev->dev, "voltage-low detected.\n");
- }
spin_lock_init(&pdata->lock);
platform_set_drvdata(pdev, pdata);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-25 18:38:27 +0000