/* * 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; }
static int m48t59_rtc_proc(struct device *dev, struct seq_file *seq) { 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); val = M48T59_READ(M48T59_FLAGS); spin_unlock_irqrestore(&m48t59->lock, flags); seq_printf(seq, "battery\t\t: %s\n", (val & M48T59_FLAGS_BF) ? "low" : "normal"); return 0; }
/* * IRQ handler for the RTC */ static irqreturn_t m48t59_rtc_interrupt(int irq, void *dev_id) { struct device *dev = (struct device *)dev_id; 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); u8 event; spin_lock(&m48t59->lock); event = M48T59_READ(M48T59_FLAGS); spin_unlock(&m48t59->lock); if (event & M48T59_FLAGS_AF) { rtc_update_irq(m48t59->rtc, 1, (RTC_AF | RTC_IRQF)); return IRQ_HANDLED; } return IRQ_NONE; }
static ssize_t m48t59_nvram_read(struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t pos, size_t size) { struct device *dev = container_of(kobj, struct device, kobj); 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); ssize_t cnt = 0; unsigned long flags; for (; size > 0 && pos < pdata->offset; cnt++, size--) { spin_lock_irqsave(&m48t59->lock, flags); *buf++ = M48T59_READ(cnt); spin_unlock_irqrestore(&m48t59->lock, flags); } return cnt; }
static ssize_t m48t59_nvram_read(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t pos, size_t size) { struct device *dev = container_of(kobj, struct device, kobj); 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); ssize_t cnt = 0; unsigned long flags; spin_lock_irqsave(&m48t59->lock, flags); for (; cnt < size; cnt++) *buf++ = M48T59_READ(cnt); spin_unlock_irqrestore(&m48t59->lock, flags); return cnt; }
static int m48t59_nvram_read(void *priv, unsigned int offset, void *val, size_t size) { struct platform_device *pdev = priv; struct device *dev = &pdev->dev; struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev); struct m48t59_private *m48t59 = platform_get_drvdata(pdev); ssize_t cnt = 0; unsigned long flags; u8 *buf = val; spin_lock_irqsave(&m48t59->lock, flags); for (; cnt < size; cnt++) *buf++ = M48T59_READ(cnt); spin_unlock_irqrestore(&m48t59->lock, flags); 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_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; }