static int m48t59_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = pdev->dev.platform_data;
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
unsigned long flags;
u8 val = 0;
dev_dbg(dev, "RTC set time %04d-%02d-%02d %02d/%02d/%02d\n",
tm->tm_year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
spin_lock_irqsave(&m48t59->lock, flags);
/* Issue the WRITE command */
M48T59_SET_BITS(M48T59_CNTL_WRITE, M48T59_CNTL);
M48T59_WRITE((BIN2BCD(tm->tm_sec) & 0x7F), M48T59_SEC);
M48T59_WRITE((BIN2BCD(tm->tm_min) & 0x7F), M48T59_MIN);
M48T59_WRITE((BIN2BCD(tm->tm_hour) & 0x3F), M48T59_HOUR);
M48T59_WRITE((BIN2BCD(tm->tm_mday) & 0x3F), M48T59_MDAY);
/* tm_mon is 0-11 */
M48T59_WRITE((BIN2BCD(tm->tm_mon + 1) & 0x1F), M48T59_MONTH);
M48T59_WRITE(BIN2BCD(tm->tm_year % 100), M48T59_YEAR);
if (tm->tm_year/100)
val = (M48T59_WDAY_CEB | M48T59_WDAY_CB);
val |= (BIN2BCD(tm->tm_wday) & 0x07);
M48T59_WRITE(val, M48T59_WDAY);
/* Clear the WRITE bit */
M48T59_CLEAR_BITS(M48T59_CNTL_WRITE, M48T59_CNTL);
spin_unlock_irqrestore(&m48t59->lock, flags);
return 0;
}
/*
* Set alarm time and date in RTC
*/
static int m48t59_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
struct rtc_time *tm = &alrm->time;
u8 mday, hour, min, sec;
unsigned long flags;
int year = tm->tm_year;
#ifdef CONFIG_SPARC
/* Sun SPARC machines count years since 1968 */
year -= 68;
#endif
/* If no irq, we don't support ALARM */
if (m48t59->irq == NO_IRQ)
return -EIO;
if (year < 0)
return -EINVAL;
/*
* 0xff means "always match"
*/
mday = tm->tm_mday;
mday = (mday >= 1 && mday <= 31) ? bin2bcd(mday) : 0xff;
if (mday == 0xff)
mday = M48T59_READ(M48T59_MDAY);
hour = tm->tm_hour;
hour = (hour < 24) ? bin2bcd(hour) : 0x00;
min = tm->tm_min;
min = (min < 60) ? bin2bcd(min) : 0x00;
sec = tm->tm_sec;
sec = (sec < 60) ? bin2bcd(sec) : 0x00;
spin_lock_irqsave(&m48t59->lock, flags);
/* Issue the WRITE command */
M48T59_SET_BITS(M48T59_CNTL_WRITE, M48T59_CNTL);
M48T59_WRITE(mday, M48T59_ALARM_DATE);
M48T59_WRITE(hour, M48T59_ALARM_HOUR);
M48T59_WRITE(min, M48T59_ALARM_MIN);
M48T59_WRITE(sec, M48T59_ALARM_SEC);
/* Clear the WRITE bit */
M48T59_CLEAR_BITS(M48T59_CNTL_WRITE, M48T59_CNTL);
spin_unlock_irqrestore(&m48t59->lock, flags);
dev_dbg(dev, "RTC set alarm time %04d-%02d-%02d %02d/%02d/%02d\n",
year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
return 0;
}
static int m48t59_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = pdev->dev.platform_data;
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
struct rtc_time *tm = &alrm->time;
u8 mday, hour, min, sec;
unsigned long flags;
int year = tm->tm_year;
#ifdef CONFIG_SPARC
year -= 68;
#endif
if (m48t59->irq == NO_IRQ)
return -EIO;
if (year < 0)
return -EINVAL;
mday = tm->tm_mday;
mday = (mday >= 1 && mday <= 31) ? bin2bcd(mday) : 0xff;
if (mday == 0xff)
mday = M48T59_READ(M48T59_MDAY);
hour = tm->tm_hour;
hour = (hour < 24) ? bin2bcd(hour) : 0x00;
min = tm->tm_min;
min = (min < 60) ? bin2bcd(min) : 0x00;
sec = tm->tm_sec;
sec = (sec < 60) ? bin2bcd(sec) : 0x00;
spin_lock_irqsave(&m48t59->lock, flags);
M48T59_SET_BITS(M48T59_CNTL_WRITE, M48T59_CNTL);
M48T59_WRITE(mday, M48T59_ALARM_DATE);
M48T59_WRITE(hour, M48T59_ALARM_HOUR);
M48T59_WRITE(min, M48T59_ALARM_MIN);
M48T59_WRITE(sec, M48T59_ALARM_SEC);
M48T59_CLEAR_BITS(M48T59_CNTL_WRITE, M48T59_CNTL);
spin_unlock_irqrestore(&m48t59->lock, flags);
dev_dbg(dev, "RTC set alarm time %04d-%02d-%02d %02d/%02d/%02d\n",
year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
return 0;
}
/*
* Read alarm time and date in RTC
*/
static int m48t59_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
struct rtc_time *tm = &alrm->time;
unsigned long flags;
u8 val;
/* If no irq, we don't support ALARM */
if (m48t59->irq == NO_IRQ)
return -EIO;
spin_lock_irqsave(&m48t59->lock, flags);
/* Issue the READ command */
M48T59_SET_BITS(M48T59_CNTL_READ, M48T59_CNTL);
tm->tm_year = bcd2bin(M48T59_READ(M48T59_YEAR));
#ifdef CONFIG_SPARC
/* Sun SPARC machines count years since 1968 */
tm->tm_year += 68;
#endif
/* tm_mon is 0-11 */
tm->tm_mon = bcd2bin(M48T59_READ(M48T59_MONTH)) - 1;
val = M48T59_READ(M48T59_WDAY);
if ((val & M48T59_WDAY_CEB) && (val & M48T59_WDAY_CB))
tm->tm_year += 100; /* one century */
tm->tm_mday = bcd2bin(M48T59_READ(M48T59_ALARM_DATE));
tm->tm_hour = bcd2bin(M48T59_READ(M48T59_ALARM_HOUR));
tm->tm_min = bcd2bin(M48T59_READ(M48T59_ALARM_MIN));
tm->tm_sec = bcd2bin(M48T59_READ(M48T59_ALARM_SEC));
/* Clear the READ bit */
M48T59_CLEAR_BITS(M48T59_CNTL_READ, M48T59_CNTL);
spin_unlock_irqrestore(&m48t59->lock, flags);
dev_dbg(dev, "RTC read alarm time %04d-%02d-%02d %02d/%02d/%02d\n",
tm->tm_year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
return rtc_valid_tm(tm);
}
static int m48t59_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
unsigned long flags;
u8 val = 0;
int year = tm->tm_year;
#ifdef CONFIG_SPARC
/* Sun SPARC machines count years since 1968 */
year -= 68;
#endif
dev_dbg(dev, "RTC set time %04d-%02d-%02d %02d/%02d/%02d\n",
year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
if (year < 0)
return -EINVAL;
spin_lock_irqsave(&m48t59->lock, flags);
/* Issue the WRITE command */
M48T59_SET_BITS(M48T59_CNTL_WRITE, M48T59_CNTL);
M48T59_WRITE((bin2bcd(tm->tm_sec) & 0x7F), M48T59_SEC);
M48T59_WRITE((bin2bcd(tm->tm_min) & 0x7F), M48T59_MIN);
M48T59_WRITE((bin2bcd(tm->tm_hour) & 0x3F), M48T59_HOUR);
M48T59_WRITE((bin2bcd(tm->tm_mday) & 0x3F), M48T59_MDAY);
/* tm_mon is 0-11 */
M48T59_WRITE((bin2bcd(tm->tm_mon + 1) & 0x1F), M48T59_MONTH);
M48T59_WRITE(bin2bcd(year % 100), M48T59_YEAR);
if (pdata->type == M48T59RTC_TYPE_M48T59 && (year / 100))
val = (M48T59_WDAY_CEB | M48T59_WDAY_CB);
val |= (bin2bcd(tm->tm_wday) & 0x07);
M48T59_WRITE(val, M48T59_WDAY);
/* Clear the WRITE bit */
M48T59_CLEAR_BITS(M48T59_CNTL_WRITE, M48T59_CNTL);
spin_unlock_irqrestore(&m48t59->lock, flags);
return 0;
}
static int m48t59_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = pdev->dev.platform_data;
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
struct rtc_time *tm = &alrm->time;
unsigned long flags;
u8 val;
if (m48t59->irq == NO_IRQ)
return -EIO;
spin_lock_irqsave(&m48t59->lock, flags);
M48T59_SET_BITS(M48T59_CNTL_READ, M48T59_CNTL);
tm->tm_year = bcd2bin(M48T59_READ(M48T59_YEAR));
#ifdef CONFIG_SPARC
tm->tm_year += 68;
#endif
tm->tm_mon = bcd2bin(M48T59_READ(M48T59_MONTH)) - 1;
val = M48T59_READ(M48T59_WDAY);
if ((val & M48T59_WDAY_CEB) && (val & M48T59_WDAY_CB))
tm->tm_year += 100;
tm->tm_mday = bcd2bin(M48T59_READ(M48T59_ALARM_DATE));
tm->tm_hour = bcd2bin(M48T59_READ(M48T59_ALARM_HOUR));
tm->tm_min = bcd2bin(M48T59_READ(M48T59_ALARM_MIN));
tm->tm_sec = bcd2bin(M48T59_READ(M48T59_ALARM_SEC));
M48T59_CLEAR_BITS(M48T59_CNTL_READ, M48T59_CNTL);
spin_unlock_irqrestore(&m48t59->lock, flags);
dev_dbg(dev, "RTC read alarm time %04d-%02d-%02d %02d/%02d/%02d\n",
tm->tm_year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
return rtc_valid_tm(tm);
}
/*
* NOTE: M48T59 only uses BCD mode
*/
static int m48t59_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
unsigned long flags;
u8 val;
spin_lock_irqsave(&m48t59->lock, flags);
/* Issue the READ command */
M48T59_SET_BITS(M48T59_CNTL_READ, M48T59_CNTL);
tm->tm_year = bcd2bin(M48T59_READ(M48T59_YEAR));
/* tm_mon is 0-11 */
tm->tm_mon = bcd2bin(M48T59_READ(M48T59_MONTH)) - 1;
tm->tm_mday = bcd2bin(M48T59_READ(M48T59_MDAY));
val = M48T59_READ(M48T59_WDAY);
if ((pdata->type == M48T59RTC_TYPE_M48T59) &&
(val & M48T59_WDAY_CEB) && (val & M48T59_WDAY_CB)) {
dev_dbg(dev, "Century bit is enabled\n");
tm->tm_year += 100; /* one century */
}
#ifdef CONFIG_SPARC
/* Sun SPARC machines count years since 1968 */
tm->tm_year += 68;
#endif
tm->tm_wday = bcd2bin(val & 0x07);
tm->tm_hour = bcd2bin(M48T59_READ(M48T59_HOUR) & 0x3F);
tm->tm_min = bcd2bin(M48T59_READ(M48T59_MIN) & 0x7F);
tm->tm_sec = bcd2bin(M48T59_READ(M48T59_SEC) & 0x7F);
/* Clear the READ bit */
M48T59_CLEAR_BITS(M48T59_CNTL_READ, M48T59_CNTL);
spin_unlock_irqrestore(&m48t59->lock, flags);
dev_dbg(dev, "RTC read time %04d-%02d-%02d %02d/%02d/%02d\n",
tm->tm_year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
return rtc_valid_tm(tm);
}
/*
* NOTE: M48T59 only uses BCD mode
*/
static int m48t59_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = pdev->dev.platform_data;
struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
unsigned long flags;
u8 val;
spin_lock_irqsave(&m48t59->lock, flags);
/* Issue the READ command */
M48T59_SET_BITS(M48T59_CNTL_READ, M48T59_CNTL);
tm->tm_year = BCD2BIN(M48T59_READ(M48T59_YEAR));
/* tm_mon is 0-11 */
tm->tm_mon = BCD2BIN(M48T59_READ(M48T59_MONTH)) - 1;
tm->tm_mday = BCD2BIN(M48T59_READ(M48T59_MDAY));
val = M48T59_READ(M48T59_WDAY);
if ((val & M48T59_WDAY_CEB) && (val & M48T59_WDAY_CB)) {
dev_dbg(dev, "Century bit is enabled\n");
tm->tm_year += 100; /* one century */
}
tm->tm_wday = BCD2BIN(val & 0x07);
tm->tm_hour = BCD2BIN(M48T59_READ(M48T59_HOUR) & 0x3F);
tm->tm_min = BCD2BIN(M48T59_READ(M48T59_MIN) & 0x7F);
tm->tm_sec = BCD2BIN(M48T59_READ(M48T59_SEC) & 0x7F);
/* Clear the READ bit */
M48T59_CLEAR_BITS(M48T59_CNTL_READ, M48T59_CNTL);
spin_unlock_irqrestore(&m48t59->lock, flags);
dev_dbg(dev, "RTC read time %04d-%02d-%02d %02d/%02d/%02d\n",
tm->tm_year + 1900, tm->tm_mon, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
return 0;
}
