@@ -15,8 +15,6 @@
#include <linux/rtc.h>
#include <linux/platform_device.h>
-#include <asm/rtc.h>
-
#include "proto.h"
@@ -81,7 +79,7 @@ init_rtc_epoch(void)
static int
alpha_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
- __get_rtc_time(tm);
+ mc146818_get_time(tm);
/* Adjust for non-default epochs. It's easier to depend on the
generic __get_rtc_time and adjust the epoch here than create
@@ -112,7 +110,7 @@ alpha_rtc_set_time(struct device *dev, struct rtc_time *tm)
tm = &xtm;
}
- return __set_rtc_time(tm);
+ return mc146818_set_time(tm);
}
static int
@@ -6,7 +6,6 @@
#include <asm/io.h>
#include <asm/processor.h>
-#include <linux/mc146818rtc.h>
#ifndef RTC_PORT
#define RTC_PORT(x) (0x70 + (x))
@@ -43,7 +43,7 @@
#include <linux/of_platform.h>
/* this is for "generic access to PC-style RTC" using CMOS_READ/CMOS_WRITE */
-#include <asm-generic/rtc.h>
+#include <linux/mc146818rtc.h>
struct cmos_rtc {
struct rtc_device *rtc;
@@ -190,10 +190,10 @@ static inline void cmos_write_bank2(unsigned char val, unsigned char addr)
static int cmos_read_time(struct device *dev, struct rtc_time *t)
{
/* REVISIT: if the clock has a "century" register, use
- * that instead of the heuristic in get_rtc_time().
+ * that instead of the heuristic in mc146818_get_time().
* That'll make Y3K compatility (year > 2070) easy!
*/
- get_rtc_time(t);
+ mc146818_get_time(t);
return 0;
}
@@ -205,7 +205,7 @@ static int cmos_set_time(struct device *dev, struct rtc_time *t)
* takes effect exactly 500ms after we write the register.
* (Also queueing and other delays before we get this far.)
*/
- return set_rtc_time(t);
+ return mc146818_set_time(t);
}
static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t)
@@ -1142,14 +1142,14 @@ static __init void cmos_of_init(struct platform_device *pdev)
if (val)
CMOS_WRITE(be32_to_cpup(val), RTC_FREQ_SELECT);
- get_rtc_time(&time);
+ cmos_read_time(&pdev->dev, &time);
ret = rtc_valid_tm(&time);
if (ret) {
struct rtc_time def_time = {
.tm_year = 1,
.tm_mday = 1,
};
- set_rtc_time(&def_time);
+ cmos_set_time(&pdev->dev, &def_time);
}
}
#else
@@ -12,12 +12,12 @@
#ifndef __ASM_RTC_H__
#define __ASM_RTC_H__
-#include <linux/mc146818rtc.h>
#include <linux/rtc.h>
-#include <linux/bcd.h>
-#include <linux/delay.h>
-#ifdef CONFIG_ACPI
-#include <linux/acpi.h>
+
+#ifndef get_rtc_time
+#include <linux/mc146818rtc.h>
+#define get_rtc_time mc146818_get_time
+#define set_rtc_time mc146818_set_time
#endif
#define RTC_PIE 0x40 /* periodic interrupt enable */
@@ -31,202 +31,6 @@
#define RTC_24H 0x02 /* 24 hour mode - else hours bit 7 means pm */
#define RTC_DST_EN 0x01 /* auto switch DST - works f. USA only */
-/*
- * Returns true if a clock update is in progress
- */
-static inline unsigned char rtc_is_updating(void)
-{
- unsigned char uip;
- unsigned long flags;
-
- spin_lock_irqsave(&rtc_lock, flags);
- uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP);
- spin_unlock_irqrestore(&rtc_lock, flags);
- return uip;
-}
-
-static inline unsigned int __get_rtc_time(struct rtc_time *time)
-{
- unsigned char ctrl;
- unsigned long flags;
- unsigned char century = 0;
-
-#ifdef CONFIG_MACH_DECSTATION
- unsigned int real_year;
-#endif
-
- /*
- * read RTC once any update in progress is done. The update
- * can take just over 2ms. We wait 20ms. There is no need to
- * to poll-wait (up to 1s - eeccch) for the falling edge of RTC_UIP.
- * If you need to know *exactly* when a second has started, enable
- * periodic update complete interrupts, (via ioctl) and then
- * immediately read /dev/rtc which will block until you get the IRQ.
- * Once the read clears, read the RTC time (again via ioctl). Easy.
- */
- if (rtc_is_updating())
- mdelay(20);
-
- /*
- * Only the values that we read from the RTC are set. We leave
- * tm_wday, tm_yday and tm_isdst untouched. Even though the
- * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
- * by the RTC when initially set to a non-zero value.
- */
- spin_lock_irqsave(&rtc_lock, flags);
- time->tm_sec = CMOS_READ(RTC_SECONDS);
- time->tm_min = CMOS_READ(RTC_MINUTES);
- time->tm_hour = CMOS_READ(RTC_HOURS);
- time->tm_mday = CMOS_READ(RTC_DAY_OF_MONTH);
- time->tm_mon = CMOS_READ(RTC_MONTH);
- time->tm_year = CMOS_READ(RTC_YEAR);
-#ifdef CONFIG_MACH_DECSTATION
- real_year = CMOS_READ(RTC_DEC_YEAR);
-#endif
-#ifdef CONFIG_ACPI
- if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
- acpi_gbl_FADT.century)
- century = CMOS_READ(acpi_gbl_FADT.century);
-#endif
- ctrl = CMOS_READ(RTC_CONTROL);
- spin_unlock_irqrestore(&rtc_lock, flags);
-
- if (!(ctrl & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
- {
- time->tm_sec = bcd2bin(time->tm_sec);
- time->tm_min = bcd2bin(time->tm_min);
- time->tm_hour = bcd2bin(time->tm_hour);
- time->tm_mday = bcd2bin(time->tm_mday);
- time->tm_mon = bcd2bin(time->tm_mon);
- time->tm_year = bcd2bin(time->tm_year);
- century = bcd2bin(century);
- }
-
-#ifdef CONFIG_MACH_DECSTATION
- time->tm_year += real_year - 72;
-#endif
-
- if (century)
- time->tm_year += (century - 19) * 100;
-
- /*
- * Account for differences between how the RTC uses the values
- * and how they are defined in a struct rtc_time;
- */
- if (time->tm_year <= 69)
- time->tm_year += 100;
-
- time->tm_mon--;
-
- return RTC_24H;
-}
-
-#ifndef get_rtc_time
-#define get_rtc_time __get_rtc_time
-#endif
-
-/* Set the current date and time in the real time clock. */
-static inline int __set_rtc_time(struct rtc_time *time)
-{
- unsigned long flags;
- unsigned char mon, day, hrs, min, sec;
- unsigned char save_control, save_freq_select;
- unsigned int yrs;
-#ifdef CONFIG_MACH_DECSTATION
- unsigned int real_yrs, leap_yr;
-#endif
- unsigned char century = 0;
-
- 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 > 255) /* They are unsigned */
- return -EINVAL;
-
- spin_lock_irqsave(&rtc_lock, flags);
-#ifdef CONFIG_MACH_DECSTATION
- real_yrs = yrs;
- leap_yr = ((!((yrs + 1900) % 4) && ((yrs + 1900) % 100)) ||
- !((yrs + 1900) % 400));
- yrs = 72;
-
- /*
- * We want to keep the year set to 73 until March
- * for non-leap years, so that Feb, 29th is handled
- * correctly.
- */
- if (!leap_yr && mon < 3) {
- real_yrs--;
- yrs = 73;
- }
-#endif
-
-#ifdef CONFIG_ACPI
- if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
- acpi_gbl_FADT.century) {
- century = (yrs + 1900) / 100;
- yrs %= 100;
- }
-#endif
-
- /* These limits and adjustments are independent of
- * whether the chip is in binary mode or not.
- */
- if (yrs > 169) {
- spin_unlock_irqrestore(&rtc_lock, flags);
- return -EINVAL;
- }
-
- if (yrs >= 100)
- yrs -= 100;
-
- if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY)
- || RTC_ALWAYS_BCD) {
- sec = bin2bcd(sec);
- min = bin2bcd(min);
- hrs = bin2bcd(hrs);
- day = bin2bcd(day);
- mon = bin2bcd(mon);
- yrs = bin2bcd(yrs);
- century = bin2bcd(century);
- }
-
- save_control = CMOS_READ(RTC_CONTROL);
- CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL);
- save_freq_select = CMOS_READ(RTC_FREQ_SELECT);
- CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT);
-
-#ifdef CONFIG_MACH_DECSTATION
- CMOS_WRITE(real_yrs, RTC_DEC_YEAR);
-#endif
- CMOS_WRITE(yrs, RTC_YEAR);
- CMOS_WRITE(mon, RTC_MONTH);
- CMOS_WRITE(day, RTC_DAY_OF_MONTH);
- CMOS_WRITE(hrs, RTC_HOURS);
- CMOS_WRITE(min, RTC_MINUTES);
- CMOS_WRITE(sec, RTC_SECONDS);
-#ifdef CONFIG_ACPI
- if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
- acpi_gbl_FADT.century)
- CMOS_WRITE(century, acpi_gbl_FADT.century);
-#endif
-
- CMOS_WRITE(save_control, RTC_CONTROL);
- CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
-
- spin_unlock_irqrestore(&rtc_lock, flags);
-
- return 0;
-}
-
-#ifndef set_rtc_time
-#define set_rtc_time __set_rtc_time
-#endif
-
static inline unsigned int get_rtc_ss(void)
{
struct rtc_time h;
@@ -14,6 +14,12 @@
#include <asm/io.h>
#include <linux/rtc.h> /* get the user-level API */
#include <asm/mc146818rtc.h> /* register access macros */
+#include <linux/bcd.h>
+#include <linux/delay.h>
+
+#ifdef CONFIG_ACPI
+#include <linux/acpi.h>
+#endif
#ifdef __KERNEL__
#include <linux/spinlock.h> /* spinlock_t */
@@ -120,4 +126,192 @@ struct cmos_rtc_board_info {
#define RTC_IO_EXTENT_USED RTC_IO_EXTENT
#endif /* ARCH_RTC_LOCATION */
+/*
+ * Returns true if a clock update is in progress
+ */
+static inline unsigned char mc146818_is_updating(void)
+{
+ unsigned char uip;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+ uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ return uip;
+}
+
+static inline unsigned int mc146818_get_time(struct rtc_time *time)
+{
+ unsigned char ctrl;
+ unsigned long flags;
+ unsigned char century = 0;
+
+#ifdef CONFIG_MACH_DECSTATION
+ unsigned int real_year;
+#endif
+
+ /*
+ * read RTC once any update in progress is done. The update
+ * can take just over 2ms. We wait 20ms. There is no need to
+ * to poll-wait (up to 1s - eeccch) for the falling edge of RTC_UIP.
+ * If you need to know *exactly* when a second has started, enable
+ * periodic update complete interrupts, (via ioctl) and then
+ * immediately read /dev/rtc which will block until you get the IRQ.
+ * Once the read clears, read the RTC time (again via ioctl). Easy.
+ */
+ if (mc146818_is_updating())
+ mdelay(20);
+
+ /*
+ * Only the values that we read from the RTC are set. We leave
+ * tm_wday, tm_yday and tm_isdst untouched. Even though the
+ * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
+ * by the RTC when initially set to a non-zero value.
+ */
+ spin_lock_irqsave(&rtc_lock, flags);
+ time->tm_sec = CMOS_READ(RTC_SECONDS);
+ time->tm_min = CMOS_READ(RTC_MINUTES);
+ time->tm_hour = CMOS_READ(RTC_HOURS);
+ time->tm_mday = CMOS_READ(RTC_DAY_OF_MONTH);
+ time->tm_mon = CMOS_READ(RTC_MONTH);
+ time->tm_year = CMOS_READ(RTC_YEAR);
+#ifdef CONFIG_MACH_DECSTATION
+ real_year = CMOS_READ(RTC_DEC_YEAR);
+#endif
+#ifdef CONFIG_ACPI
+ if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
+ acpi_gbl_FADT.century)
+ century = CMOS_READ(acpi_gbl_FADT.century);
+#endif
+ ctrl = CMOS_READ(RTC_CONTROL);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+
+ if (!(ctrl & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
+ {
+ time->tm_sec = bcd2bin(time->tm_sec);
+ time->tm_min = bcd2bin(time->tm_min);
+ time->tm_hour = bcd2bin(time->tm_hour);
+ time->tm_mday = bcd2bin(time->tm_mday);
+ time->tm_mon = bcd2bin(time->tm_mon);
+ time->tm_year = bcd2bin(time->tm_year);
+ century = bcd2bin(century);
+ }
+
+#ifdef CONFIG_MACH_DECSTATION
+ time->tm_year += real_year - 72;
+#endif
+
+ if (century)
+ time->tm_year += (century - 19) * 100;
+
+ /*
+ * Account for differences between how the RTC uses the values
+ * and how they are defined in a struct rtc_time;
+ */
+ if (time->tm_year <= 69)
+ time->tm_year += 100;
+
+ time->tm_mon--;
+
+ return RTC_24H;
+}
+
+/* Set the current date and time in the real time clock. */
+static inline int mc146818_set_time(struct rtc_time *time)
+{
+ unsigned long flags;
+ unsigned char mon, day, hrs, min, sec;
+ unsigned char save_control, save_freq_select;
+ unsigned int yrs;
+#ifdef CONFIG_MACH_DECSTATION
+ unsigned int real_yrs, leap_yr;
+#endif
+ unsigned char century = 0;
+
+ 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 > 255) /* They are unsigned */
+ return -EINVAL;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+#ifdef CONFIG_MACH_DECSTATION
+ real_yrs = yrs;
+ leap_yr = ((!((yrs + 1900) % 4) && ((yrs + 1900) % 100)) ||
+ !((yrs + 1900) % 400));
+ yrs = 72;
+
+ /*
+ * We want to keep the year set to 73 until March
+ * for non-leap years, so that Feb, 29th is handled
+ * correctly.
+ */
+ if (!leap_yr && mon < 3) {
+ real_yrs--;
+ yrs = 73;
+ }
+#endif
+
+#ifdef CONFIG_ACPI
+ if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
+ acpi_gbl_FADT.century) {
+ century = (yrs + 1900) / 100;
+ yrs %= 100;
+ }
+#endif
+
+ /* These limits and adjustments are independent of
+ * whether the chip is in binary mode or not.
+ */
+ if (yrs > 169) {
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ return -EINVAL;
+ }
+
+ if (yrs >= 100)
+ yrs -= 100;
+
+ if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY)
+ || RTC_ALWAYS_BCD) {
+ sec = bin2bcd(sec);
+ min = bin2bcd(min);
+ hrs = bin2bcd(hrs);
+ day = bin2bcd(day);
+ mon = bin2bcd(mon);
+ yrs = bin2bcd(yrs);
+ century = bin2bcd(century);
+ }
+
+ save_control = CMOS_READ(RTC_CONTROL);
+ CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL);
+ save_freq_select = CMOS_READ(RTC_FREQ_SELECT);
+ CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT);
+
+#ifdef CONFIG_MACH_DECSTATION
+ CMOS_WRITE(real_yrs, RTC_DEC_YEAR);
+#endif
+ CMOS_WRITE(yrs, RTC_YEAR);
+ CMOS_WRITE(mon, RTC_MONTH);
+ CMOS_WRITE(day, RTC_DAY_OF_MONTH);
+ CMOS_WRITE(hrs, RTC_HOURS);
+ CMOS_WRITE(min, RTC_MINUTES);
+ CMOS_WRITE(sec, RTC_SECONDS);
+#ifdef CONFIG_ACPI
+ if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
+ acpi_gbl_FADT.century)
+ CMOS_WRITE(century, acpi_gbl_FADT.century);
+#endif
+
+ CMOS_WRITE(save_control, RTC_CONTROL);
+ CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
+
+ spin_unlock_irqrestore(&rtc_lock, flags);
+
+ return 0;
+}
+
#endif /* _MC146818RTC_H */