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-rw-r--r--drivers/rtc/Kconfig19
-rw-r--r--drivers/rtc/Makefile2
-rw-r--r--drivers/rtc/interface.c102
-rw-r--r--drivers/rtc/rtc-at32ap700x.c7
-rw-r--r--drivers/rtc/rtc-cmos.c31
-rw-r--r--drivers/rtc/rtc-ds1374.c2
-rw-r--r--drivers/rtc/rtc-fm3130.c501
-rw-r--r--drivers/rtc/rtc-lib.c2
-rw-r--r--drivers/rtc/rtc-m41t80.c3
-rw-r--r--drivers/rtc/rtc-ppc.c69
-rw-r--r--drivers/rtc/rtc-sa1100.c4
-rw-r--r--drivers/rtc/rtc-x1205.c111
12 files changed, 800 insertions, 53 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 6cc2c0330230..4949dc4859be 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -256,6 +256,17 @@ config RTC_DRV_S35390A
This driver can also be built as a module. If so the module
will be called rtc-s35390a.
+config RTC_DRV_FM3130
+ tristate "Ramtron FM3130"
+ help
+ If you say Y here you will get support for the
+ Ramtron FM3130 RTC chips.
+ Ramtron FM3130 is a chip with two separate devices inside,
+ RTC clock and FRAM. This driver provides only RTC functionality.
+
+ This driver can also be built as a module. If so the module
+ will be called rtc-fm3130.
+
endif # I2C
comment "SPI RTC drivers"
@@ -534,4 +545,12 @@ config RTC_DRV_RS5C313
help
If you say yes here you get support for the Ricoh RS5C313 RTC chips.
+config RTC_DRV_PPC
+ tristate "PowerPC machine dependent RTC support"
+ depends on PPC_MERGE
+ help
+ The PowerPC kernel has machine-specific functions for accessing
+ the RTC. This exposes that functionality through the generic RTC
+ class.
+
endif # RTC_CLASS
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 872f1218ff9f..b6e14d51670b 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_RTC_DRV_DS1553) += rtc-ds1553.o
obj-$(CONFIG_RTC_DRV_DS1672) += rtc-ds1672.o
obj-$(CONFIG_RTC_DRV_DS1742) += rtc-ds1742.o
obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o
+obj-$(CONFIG_RTC_DRV_FM3130) += rtc-fm3130.o
obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o
obj-$(CONFIG_RTC_DRV_M41T80) += rtc-m41t80.o
obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o
@@ -41,6 +42,7 @@ obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o
obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o
obj-$(CONFIG_RTC_DRV_PCF8583) += rtc-pcf8583.o
obj-$(CONFIG_RTC_DRV_PL031) += rtc-pl031.o
+obj-$(CONFIG_RTC_DRV_PPC) += rtc-ppc.o
obj-$(CONFIG_RTC_DRV_R9701) += rtc-r9701.o
obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o
obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 7e3ad4f3b343..58b7336640ff 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -126,12 +126,25 @@ 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 not be capable of filling
- * in all fields of the rtc_time struct (eg. rtc-cmos),
- * and so might instead return -1 in some fields.
- * We deal with that here by grabbing a current RTC timestamp
- * and using values from that for any missing (-1) values.
+ /* 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,
@@ -174,6 +187,10 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
if (!alarm->enabled)
return 0;
+ /* 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)
@@ -183,22 +200,85 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
} 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
- || before.tm_isdst != now.tm_isdst);
+ || before.tm_year != now.tm_year);
- /* Fill in any missing alarm fields using the timestamp */
+ /* 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;
- if (alarm->time.tm_mday == -1)
+
+ /* For simplicity, only support date rollover for now */
+ if (alarm->time.tm_mday == -1) {
alarm->time.tm_mday = now.tm_mday;
- if (alarm->time.tm_mon == -1)
+ missing = day;
+ }
+ if (alarm->time.tm_mon == -1) {
alarm->time.tm_mon = now.tm_mon;
- if (alarm->time.tm_year == -1)
+ 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));
+ break;
+
+ default:
+ dev_warn(&rtc->dev, "alarm rollover not handled\n");
+ }
+
+done:
return 0;
}
EXPORT_SYMBOL_GPL(rtc_read_alarm);
diff --git a/drivers/rtc/rtc-at32ap700x.c b/drivers/rtc/rtc-at32ap700x.c
index 42244f14b41c..2ef8cdfda4a7 100644
--- a/drivers/rtc/rtc-at32ap700x.c
+++ b/drivers/rtc/rtc-at32ap700x.c
@@ -94,8 +94,11 @@ static int at32_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct rtc_at32ap700x *rtc = dev_get_drvdata(dev);
+ spin_lock_irq(&rtc->lock);
rtc_time_to_tm(rtc->alarm_time, &alrm->time);
- alrm->pending = rtc_readl(rtc, IMR) & RTC_BIT(IMR_TOPI) ? 1 : 0;
+ alrm->enabled = rtc_readl(rtc, IMR) & RTC_BIT(IMR_TOPI) ? 1 : 0;
+ alrm->pending = rtc_readl(rtc, ISR) & RTC_BIT(ISR_TOPI) ? 1 : 0;
+ spin_unlock_irq(&rtc->lock);
return 0;
}
@@ -119,7 +122,7 @@ static int at32_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
spin_lock_irq(&rtc->lock);
rtc->alarm_time = alarm_unix_time;
rtc_writel(rtc, TOP, rtc->alarm_time);
- if (alrm->pending)
+ if (alrm->enabled)
rtc_writel(rtc, CTRL, rtc_readl(rtc, CTRL)
| RTC_BIT(CTRL_TOPEN));
else
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index d060a06ce05b..d7bb9bac71df 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -905,19 +905,7 @@ static struct pnp_driver cmos_pnp_driver = {
.resume = cmos_pnp_resume,
};
-static int __init cmos_init(void)
-{
- return pnp_register_driver(&cmos_pnp_driver);
-}
-module_init(cmos_init);
-
-static void __exit cmos_exit(void)
-{
- pnp_unregister_driver(&cmos_pnp_driver);
-}
-module_exit(cmos_exit);
-
-#else /* no PNP */
+#endif /* CONFIG_PNP */
/*----------------------------------------------------------------*/
@@ -958,20 +946,33 @@ static struct platform_driver cmos_platform_driver = {
static int __init cmos_init(void)
{
+#ifdef CONFIG_PNP
+ if (pnp_platform_devices)
+ return pnp_register_driver(&cmos_pnp_driver);
+ else
+ return platform_driver_probe(&cmos_platform_driver,
+ cmos_platform_probe);
+#else
return platform_driver_probe(&cmos_platform_driver,
cmos_platform_probe);
+#endif /* CONFIG_PNP */
}
module_init(cmos_init);
static void __exit cmos_exit(void)
{
+#ifdef CONFIG_PNP
+ if (pnp_platform_devices)
+ pnp_unregister_driver(&cmos_pnp_driver);
+ else
+ platform_driver_unregister(&cmos_platform_driver);
+#else
platform_driver_unregister(&cmos_platform_driver);
+#endif /* CONFIG_PNP */
}
module_exit(cmos_exit);
-#endif /* !PNP */
-
MODULE_AUTHOR("David Brownell");
MODULE_DESCRIPTION("Driver for PC-style 'CMOS' RTCs");
MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index fa2d2f8b3f4d..640acd20fdde 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -42,7 +42,7 @@
#define DS1374_REG_TCR 0x09 /* Trickle Charge */
static const struct i2c_device_id ds1374_id[] = {
- { "rtc-ds1374", 0 },
+ { "ds1374", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ds1374_id);
diff --git a/drivers/rtc/rtc-fm3130.c b/drivers/rtc/rtc-fm3130.c
new file mode 100644
index 000000000000..11644c8fca82
--- /dev/null
+++ b/drivers/rtc/rtc-fm3130.c
@@ -0,0 +1,501 @@
+/*
+ * rtc-fm3130.c - RTC driver for Ramtron FM3130 I2C chip.
+ *
+ * Copyright (C) 2008 Sergey Lapin
+ * Based on ds1307 driver by James Chapman and David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/rtc.h>
+#include <linux/bcd.h>
+
+#define FM3130_RTC_CONTROL (0x0)
+#define FM3130_CAL_CONTROL (0x1)
+#define FM3130_RTC_SECONDS (0x2)
+#define FM3130_RTC_MINUTES (0x3)
+#define FM3130_RTC_HOURS (0x4)
+#define FM3130_RTC_DAY (0x5)
+#define FM3130_RTC_DATE (0x6)
+#define FM3130_RTC_MONTHS (0x7)
+#define FM3130_RTC_YEARS (0x8)
+
+#define FM3130_ALARM_SECONDS (0x9)
+#define FM3130_ALARM_MINUTES (0xa)
+#define FM3130_ALARM_HOURS (0xb)
+#define FM3130_ALARM_DATE (0xc)
+#define FM3130_ALARM_MONTHS (0xd)
+#define FM3130_ALARM_WP_CONTROL (0xe)
+
+#define FM3130_CAL_CONTROL_BIT_nOSCEN (1 << 7) /* Osciallator enabled */
+#define FM3130_RTC_CONTROL_BIT_LB (1 << 7) /* Low battery */
+#define FM3130_RTC_CONTROL_BIT_AF (1 << 6) /* Alarm flag */
+#define FM3130_RTC_CONTROL_BIT_CF (1 << 5) /* Century overflow */
+#define FM3130_RTC_CONTROL_BIT_POR (1 << 4) /* Power on reset */
+#define FM3130_RTC_CONTROL_BIT_AEN (1 << 3) /* Alarm enable */
+#define FM3130_RTC_CONTROL_BIT_CAL (1 << 2) /* Calibration mode */
+#define FM3130_RTC_CONTROL_BIT_WRITE (1 << 1) /* W=1 -> write mode W=0 normal */
+#define FM3130_RTC_CONTROL_BIT_READ (1 << 0) /* R=1 -> read mode R=0 normal */
+
+#define FM3130_CLOCK_REGS 7
+#define FM3130_ALARM_REGS 5
+
+struct fm3130 {
+ u8 reg_addr_time;
+ u8 reg_addr_alarm;
+ u8 regs[15];
+ struct i2c_msg msg[4];
+ struct i2c_client *client;
+ struct rtc_device *rtc;
+ int data_valid;
+ int alarm;
+};
+static const struct i2c_device_id fm3130_id[] = {
+ { "fm3130-rtc", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, fm3130_id);
+
+#define FM3130_MODE_NORMAL 0
+#define FM3130_MODE_WRITE 1
+#define FM3130_MODE_READ 2
+
+static void fm3130_rtc_mode(struct device *dev, int mode)
+{
+ struct fm3130 *fm3130 = dev_get_drvdata(dev);
+
+ fm3130->regs[FM3130_RTC_CONTROL] =
+ i2c_smbus_read_byte_data(fm3130->client, FM3130_RTC_CONTROL);
+ switch (mode) {
+ case FM3130_MODE_NORMAL:
+ fm3130->regs[FM3130_RTC_CONTROL] &=
+ ~(FM3130_RTC_CONTROL_BIT_WRITE |
+ FM3130_RTC_CONTROL_BIT_READ);
+ break;
+ case FM3130_MODE_WRITE:
+ fm3130->regs[FM3130_RTC_CONTROL] |= FM3130_RTC_CONTROL_BIT_WRITE;
+ break;
+ case FM3130_MODE_READ:
+ fm3130->regs[FM3130_RTC_CONTROL] |= FM3130_RTC_CONTROL_BIT_READ;
+ break;
+ default:
+ dev_dbg(dev, "invalid mode %d\n", mode);
+ break;
+ }
+ /* Checking for alarm */
+ if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_AF) {
+ fm3130->alarm = 1;
+ fm3130->regs[FM3130_RTC_CONTROL] &= ~FM3130_RTC_CONTROL_BIT_AF;
+ }
+ i2c_smbus_write_byte_data(fm3130->client,
+ FM3130_RTC_CONTROL, fm3130->regs[FM3130_RTC_CONTROL]);
+}
+
+static int fm3130_get_time(struct device *dev, struct rtc_time *t)
+{
+ struct fm3130 *fm3130 = dev_get_drvdata(dev);
+ int tmp;
+
+ if (!fm3130->data_valid) {
+ /* We have invalid data in RTC, probably due
+ to battery faults or other problems. Return EIO
+ for now, it will allow us to set data later insted
+ of error during probing which disables device */
+ return -EIO;
+ }
+ fm3130_rtc_mode(dev, FM3130_MODE_READ);
+
+ /* read the RTC date and time registers all at once */
+ tmp = i2c_transfer(to_i2c_adapter(fm3130->client->dev.parent),
+ fm3130->msg, 2);
+ if (tmp != 2) {
+ dev_err(dev, "%s error %d\n", "read", tmp);
+ return -EIO;
+ }
+
+ fm3130_rtc_mode(dev, FM3130_MODE_NORMAL);
+
+ dev_dbg(dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x"
+ "%02x %02x %02x %02x %02x %02x %02x\n",
+ "read",
+ fm3130->regs[0], fm3130->regs[1],
+ fm3130->regs[2], fm3130->regs[3],
+ fm3130->regs[4], fm3130->regs[5],
+ fm3130->regs[6], fm3130->regs[7],
+ fm3130->regs[8], fm3130->regs[9],
+ fm3130->regs[0xa], fm3130->regs[0xb],
+ fm3130->regs[0xc], fm3130->regs[0xd],
+ fm3130->regs[0xe]);
+
+ t->tm_sec = BCD2BIN(fm3130->regs[FM3130_RTC_SECONDS] & 0x7f);
+ t->tm_min = BCD2BIN(fm3130->regs[FM3130_RTC_MINUTES] & 0x7f);
+ tmp = fm3130->regs[FM3130_RTC_HOURS] & 0x3f;
+ t->tm_hour = BCD2BIN(tmp);
+ t->tm_wday = BCD2BIN(fm3130->regs[FM3130_RTC_DAY] & 0x07) - 1;
+ t->tm_mday = BCD2BIN(fm3130->regs[FM3130_RTC_DATE] & 0x3f);
+ tmp = fm3130->regs[FM3130_RTC_MONTHS] & 0x1f;
+ t->tm_mon = BCD2BIN(tmp) - 1;
+
+ /* assume 20YY not 19YY, and ignore CF bit */
+ t->tm_year = BCD2BIN(fm3130->regs[FM3130_RTC_YEARS]) + 100;
+
+ dev_dbg(dev, "%s secs=%d, mins=%d, "
+ "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
+ "read", t->tm_sec, t->tm_min,
+ t->tm_hour, t->tm_mday,
+ t->tm_mon, t->tm_year, t->tm_wday);
+
+ /* initial clock setting can be undefined */
+ return rtc_valid_tm(t);
+}
+
+
+static int fm3130_set_time(struct device *dev, struct rtc_time *t)
+{
+ struct fm3130 *fm3130 = dev_get_drvdata(dev);
+ int tmp, i;
+ u8 *buf = fm3130->regs;
+
+ dev_dbg(dev, "%s secs=%d, mins=%d, "
+ "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
+ "write", t->tm_sec, t->tm_min,
+ t->tm_hour, t->tm_mday,
+ t->tm_mon, t->tm_year, t->tm_wday);
+
+ /* first register addr */
+ buf[FM3130_RTC_SECONDS] = BIN2BCD(t->tm_sec);
+ buf[FM3130_RTC_MINUTES] = BIN2BCD(t->tm_min);
+ buf[FM3130_RTC_HOURS] = BIN2BCD(t->tm_hour);
+ buf[FM3130_RTC_DAY] = BIN2BCD(t->tm_wday + 1);
+ buf[FM3130_RTC_DATE] = BIN2BCD(t->tm_mday);
+ buf[FM3130_RTC_MONTHS] = BIN2BCD(t->tm_mon + 1);
+
+ /* assume 20YY not 19YY */
+ tmp = t->tm_year - 100;
+ buf[FM3130_RTC_YEARS] = BIN2BCD(tmp);
+
+ dev_dbg(dev, "%s: %02x %02x %02x %02x %02x %02x %02x"
+ "%02x %02x %02x %02x %02x %02x %02x %02x\n",
+ "write", buf[0], buf[1], buf[2], buf[3],
+ buf[4], buf[5], buf[6], buf[7],
+ buf[8], buf[9], buf[0xa], buf[0xb],
+ buf[0xc], buf[0xd], buf[0xe]);
+
+ fm3130_rtc_mode(dev, FM3130_MODE_WRITE);
+
+ /* Writing time registers, we don't support multibyte transfers */
+ for (i = 0; i < FM3130_CLOCK_REGS; i++) {
+ i2c_smbus_write_byte_data(fm3130->client,
+ FM3130_RTC_SECONDS + i,
+ fm3130->regs[FM3130_RTC_SECONDS + i]);
+ }
+
+ fm3130_rtc_mode(dev, FM3130_MODE_NORMAL);
+
+ /* We assume here that data are valid once written */
+ if (!fm3130->data_valid)
+ fm3130->data_valid = 1;
+ return 0;
+}
+
+static int fm3130_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct fm3130 *fm3130 = dev_get_drvdata(dev);
+ int tmp;
+ struct rtc_time *tm = &alrm->time;
+ /* read the RTC alarm registers all at once */
+ tmp = i2c_transfer(to_i2c_adapter(fm3130->client->dev.parent),
+ &fm3130->msg[2], 2);
+ if (tmp != 2) {
+ dev_err(dev, "%s error %d\n", "read", tmp);
+ return -EIO;
+ }
+ dev_dbg(dev, "alarm read %02x %02x %02x %02x %02x\n",
+ fm3130->regs[FM3130_ALARM_SECONDS],
+ fm3130->regs[FM3130_ALARM_MINUTES],
+ fm3130->regs[FM3130_ALARM_HOURS],
+ fm3130->regs[FM3130_ALARM_DATE],
+ fm3130->regs[FM3130_ALARM_MONTHS]);
+
+
+ tm->tm_sec = BCD2BIN(fm3130->regs[FM3130_ALARM_SECONDS] & 0x7F);
+ tm->tm_min = BCD2BIN(fm3130->regs[FM3130_ALARM_MINUTES] & 0x7F);
+ tm->tm_hour = BCD2BIN(fm3130->regs[FM3130_ALARM_HOURS] & 0x3F);
+ tm->tm_mday = BCD2BIN(fm3130->regs[FM3130_ALARM_DATE] & 0x3F);
+ tm->tm_mon = BCD2BIN(fm3130->regs[FM3130_ALARM_MONTHS] & 0x1F);
+ if (tm->tm_mon > 0)
+ tm->tm_mon -= 1; /* RTC is 1-12, tm_mon is 0-11 */
+ dev_dbg(dev, "%s secs=%d, mins=%d, "
+ "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
+ "read alarm", tm->tm_sec, tm->tm_min,
+ tm->tm_hour, tm->tm_mday,
+ tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ return 0;
+}
+
+static int fm3130_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct fm3130 *fm3130 = dev_get_drvdata(dev);
+ struct rtc_time *tm = &alrm->time;
+ int i;
+
+ dev_dbg(dev, "%s secs=%d, mins=%d, "
+ "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
+ "write alarm", tm->tm_sec, tm->tm_min,
+ tm->tm_hour, tm->tm_mday,
+ tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ if (tm->tm_sec != -1)
+ fm3130->regs[FM3130_ALARM_SECONDS] =
+ BIN2BCD(tm->tm_sec) | 0x80;
+
+ if (tm->tm_min != -1)
+ fm3130->regs[FM3130_ALARM_MINUTES] =
+ BIN2BCD(tm->tm_min) | 0x80;
+
+ if (tm->tm_hour != -1)
+ fm3130->regs[FM3130_ALARM_HOURS] =
+ BIN2BCD(tm->tm_hour) | 0x80;
+
+ if (tm->tm_mday != -1)
+ fm3130->regs[FM3130_ALARM_DATE] =
+ BIN2BCD(tm->tm_mday) | 0x80;
+
+ if (tm->tm_mon != -1)
+ fm3130->regs[FM3130_ALARM_MONTHS] =
+ BIN2BCD(tm->tm_mon + 1) | 0x80;
+
+ dev_dbg(dev, "alarm write %02x %02x %02x %02x %02x\n",
+ fm3130->regs[FM3130_ALARM_SECONDS],
+ fm3130->regs[FM3130_ALARM_MINUTES],
+ fm3130->regs[FM3130_ALARM_HOURS],
+ fm3130->regs[FM3130_ALARM_DATE],
+ fm3130->regs[FM3130_ALARM_MONTHS]);
+ /* Writing time registers, we don't support multibyte transfers */
+ for (i = 0; i < FM3130_ALARM_REGS; i++) {
+ i2c_smbus_write_byte_data(fm3130->client,
+ FM3130_ALARM_SECONDS + i,
+ fm3130->regs[FM3130_ALARM_SECONDS + i]);
+ }
+ fm3130->regs[FM3130_RTC_CONTROL] =
+ i2c_smbus_read_byte_data(fm3130->client, FM3130_RTC_CONTROL);
+ /* Checking for alarm */
+ if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_AF) {
+ fm3130->alarm = 1;
+ fm3130->regs[FM3130_RTC_CONTROL] &= ~FM3130_RTC_CONTROL_BIT_AF;
+ }
+ if (alrm->enabled) {
+ i2c_smbus_write_byte_data(fm3130->client, FM3130_RTC_CONTROL,
+ (fm3130->regs[FM3130_RTC_CONTROL] &
+ ~(FM3130_RTC_CONTROL_BIT_CAL)) |
+ FM3130_RTC_CONTROL_BIT_AEN);
+ } else {
+ i2c_smbus_write_byte_data(fm3130->client, FM3130_RTC_CONTROL,
+ fm3130->regs[FM3130_RTC_CONTROL] &
+ ~(FM3130_RTC_CONTROL_BIT_AEN));
+ }
+ return 0;
+}
+
+static const struct rtc_class_ops fm3130_rtc_ops = {
+ .read_time = fm3130_get_time,
+ .set_time = fm3130_set_time,
+ .read_alarm = fm3130_read_alarm,
+ .set_alarm = fm3130_set_alarm,
+};
+
+static struct i2c_driver fm3130_driver;
+
+static int __devinit fm3130_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct fm3130 *fm3130;
+ int err = -ENODEV;
+ int tmp;
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+
+ if (!i2c_check_functionality(adapter,
+ I2C_FUNC_I2C | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
+ return -EIO;
+
+ fm3130 = kzalloc(sizeof(struct fm3130), GFP_KERNEL);
+
+ if (!fm3130)
+ return -ENOMEM;
+
+ fm3130->client = client;
+ i2c_set_clientdata(client, fm3130);
+ fm3130->reg_addr_time = FM3130_RTC_SECONDS;
+ fm3130->reg_addr_alarm = FM3130_ALARM_SECONDS;
+
+ /* Messages to read time */
+ fm3130->msg[0].addr = client->addr;
+ fm3130->msg[0].flags = 0;
+ fm3130->msg[0].len = 1;
+ fm3130->msg[0].buf = &fm3130->reg_addr_time;
+
+ fm3130->msg[1].addr = client->addr;
+ fm3130->msg[1].flags = I2C_M_RD;
+ fm3130->msg[1].len = FM3130_CLOCK_REGS;
+ fm3130->msg[1].buf = &fm3130->regs[FM3130_RTC_SECONDS];
+
+ /* Messages to read alarm */
+ fm3130->msg[2].addr = client->addr;
+ fm3130->msg[2].flags = 0;
+ fm3130->msg[2].len = 1;
+ fm3130->msg[2].buf = &fm3130->reg_addr_alarm;
+
+ fm3130->msg[3].addr = client->addr;
+ fm3130->msg[3].flags = I2C_M_RD;
+ fm3130->msg[3].len = FM3130_ALARM_REGS;
+ fm3130->msg[3].buf = &fm3130->regs[FM3130_ALARM_SECONDS];
+
+ fm3130->data_valid = 0;
+
+ tmp = i2c_transfer(adapter, fm3130->msg, 4);
+ if (tmp != 4) {
+ pr_debug("read error %d\n", tmp);
+ err = -EIO;
+ goto exit_free;
+ }
+
+ fm3130->regs[FM3130_RTC_CONTROL] =
+ i2c_smbus_read_byte_data(client, FM3130_RTC_CONTROL);
+ fm3130->regs[FM3130_CAL_CONTROL] =
+ i2c_smbus_read_byte_data(client, FM3130_CAL_CONTROL);
+
+ /* Checking for alarm */
+ if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_AF) {
+ fm3130->alarm = 1;
+ fm3130->regs[FM3130_RTC_CONTROL] &= ~FM3130_RTC_CONTROL_BIT_AF;
+ }
+
+ /* Disabling calibration mode */
+ if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_CAL)
+ i2c_smbus_write_byte_data(client, FM3130_RTC_CONTROL,
+ fm3130->regs[FM3130_RTC_CONTROL] &
+ ~(FM3130_RTC_CONTROL_BIT_CAL));
+ dev_warn(&client->dev, "Disabling calibration mode!\n");
+
+ /* Disabling read and write modes */
+ if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_WRITE ||
+ fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_READ)
+ i2c_smbus_write_byte_data(client, FM3130_RTC_CONTROL,
+ fm3130->regs[FM3130_RTC_CONTROL] &
+ ~(FM3130_RTC_CONTROL_BIT_READ |
+ FM3130_RTC_CONTROL_BIT_WRITE));
+ dev_warn(&client->dev, "Disabling READ or WRITE mode!\n");
+
+ /* oscillator off? turn it on, so clock can tick. */
+ if (fm3130->regs[FM3130_CAL_CONTROL] & FM3130_CAL_CONTROL_BIT_nOSCEN)
+ i2c_smbus_write_byte_data(client, FM3130_CAL_CONTROL,
+ fm3130->regs[FM3130_CAL_CONTROL] &
+ ~(FM3130_CAL_CONTROL_BIT_nOSCEN));
+
+ /* oscillator fault? clear flag, and warn */
+ if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_LB)
+ dev_warn(&client->dev, "Low battery!\n");
+
+ /* oscillator fault? clear flag, and warn */
+ if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_POR) {
+ i2c_smbus_write_byte_data(client, FM3130_RTC_CONTROL,
+ fm3130->regs[FM3130_RTC_CONTROL] &
+ ~FM3130_RTC_CONTROL_BIT_POR);
+ dev_warn(&client->dev, "SET TIME!\n");
+ }
+ /* ACS is controlled by alarm */
+ i2c_smbus_write_byte_data(client, FM3130_ALARM_WP_CONTROL, 0x80);
+
+ /* TODO */
+ /* TODO need to sanity check alarm */
+ tmp = fm3130->regs[FM3130_RTC_SECONDS];
+ tmp = BCD2BIN(tmp & 0x7f);
+ if (tmp > 60)
+ goto exit_bad;
+ tmp = BCD2BIN(fm3130->regs[FM3130_RTC_MINUTES] & 0x7f);
+ if (tmp > 60)
+ goto exit_bad;
+
+ tmp = BCD2BIN(fm3130->regs[FM3130_RTC_DATE] & 0x3f);
+ if (tmp == 0 || tmp > 31)
+ goto exit_bad;
+
+ tmp = BCD2BIN(fm3130->regs[FM3130_RTC_MONTHS] & 0x1f);
+ if (tmp == 0 || tmp > 12)
+ goto exit_bad;
+
+ tmp = fm3130->regs[FM3130_RTC_HOURS];
+
+ fm3130->data_valid = 1;
+
+exit_bad:
+ if (!fm3130->data_valid)
+ dev_dbg(&client->dev,
+ "%s: %02x %02x %02x %02x %02x %02x %02x %02x"
+ "%02x %02x %02x %02x %02x %02x %02x\n",
+ "bogus registers",
+ fm3130->regs[0], fm3130->regs[1],
+ fm3130->regs[2], fm3130->regs[3],
+ fm3130->regs[4], fm3130->regs[5],
+ fm3130->regs[6], fm3130->regs[7],
+ fm3130->regs[8], fm3130->regs[9],
+ fm3130->regs[0xa], fm3130->regs[0xb],
+ fm3130->regs[0xc], fm3130->regs[0xd],
+ fm3130->regs[0xe]);
+
+ /* We won't bail out here because we just got invalid data.
+ Time setting from u-boot doesn't work anyway */
+ fm3130->rtc = rtc_device_register(client->name, &client->dev,
+ &fm3130_rtc_ops, THIS_MODULE);
+ if (IS_ERR(fm3130->rtc)) {
+ err = PTR_ERR(fm3130->rtc);
+ dev_err(&client->dev,
+ "unable to register the class device\n");
+ goto exit_free;
+ }
+ return 0;
+exit_free:
+ kfree(fm3130);
+ return err;
+}
+
+static int __devexit fm3130_remove(struct i2c_client *client)
+{
+ struct fm3130 *fm3130 = i2c_get_clientdata(client);
+
+ rtc_device_unregister(fm3130->rtc);
+ kfree(fm3130);
+ return 0;
+}
+
+static struct i2c_driver fm3130_driver = {
+ .driver = {
+ .name = "rtc-fm3130",
+ .owner = THIS_MODULE,
+ },
+ .probe = fm3130_probe,
+ .remove = __devexit_p(fm3130_remove),
+ .id_table = fm3130_id,
+};
+
+static int __init fm3130_init(void)
+{
+ return i2c_add_driver(&fm3130_driver);
+}
+module_init(fm3130_init);
+
+static void __exit fm3130_exit(void)
+{
+ i2c_del_driver(&fm3130_driver);
+}
+module_exit(fm3130_exit);
+
+MODULE_DESCRIPTION("RTC driver for FM3130");
+MODULE_AUTHOR("Sergey Lapin <slapin@ossfans.org>");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c
index ba795a4db1e9..9f996ec881ce 100644
--- a/drivers/rtc/rtc-lib.c
+++ b/drivers/rtc/rtc-lib.c
@@ -51,7 +51,7 @@ EXPORT_SYMBOL(rtc_year_days);
*/
void rtc_time_to_tm(unsigned long time, struct rtc_time *tm)
{
- register int days, month, year;
+ unsigned int days, month, year;
days = time / 86400;
time -= days * 86400;
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 316bfaa80872..a3e0880b38fb 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/i2c.h>
@@ -803,6 +804,7 @@ static int m41t80_probe(struct i2c_client *client,
#ifdef CONFIG_RTC_DRV_M41T80_WDT
if (clientdata->features & M41T80_FEATURE_HT) {
+ save_client = client;
rc = misc_register(&wdt_dev);
if (rc)
goto exit;
@@ -811,7 +813,6 @@ static int m41t80_probe(struct i2c_client *client,
misc_deregister(&wdt_dev);
goto exit;
}
- save_client = client;
}
#endif
return 0;
diff --git a/drivers/rtc/rtc-ppc.c b/drivers/rtc/rtc-ppc.c
new file mode 100644
index 000000000000..c8e97e25ef7e
--- /dev/null
+++ b/drivers/rtc/rtc-ppc.c
@@ -0,0 +1,69 @@
+/*
+ * RTC driver for ppc_md RTC functions
+ *
+ * © 2007 Red Hat, Inc.
+ *
+ * Author: David Woodhouse <dwmw2@infradead.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/rtc.h>
+#include <linux/platform_device.h>
+#include <asm/machdep.h>
+
+static int ppc_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ ppc_md.get_rtc_time(tm);
+ return 0;
+}
+
+static int ppc_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ return ppc_md.set_rtc_time(tm);
+}
+
+static const struct rtc_class_ops ppc_rtc_ops = {
+ .set_time = ppc_rtc_set_time,
+ .read_time = ppc_rtc_read_time,
+};
+
+static struct rtc_device *rtc;
+static struct platform_device *ppc_rtc_pdev;
+
+static int __init ppc_rtc_init(void)
+{
+ if (!ppc_md.get_rtc_time || !ppc_md.set_rtc_time)
+ return -ENODEV;
+
+ ppc_rtc_pdev = platform_device_register_simple("ppc-rtc", 0, NULL, 0);
+ if (IS_ERR(ppc_rtc_pdev))
+ return PTR_ERR(ppc_rtc_pdev);
+
+ rtc = rtc_device_register("ppc_md", &ppc_rtc_pdev->dev,
+ &ppc_rtc_ops, THIS_MODULE);
+ if (IS_ERR(rtc)) {
+ platform_device_unregister(ppc_rtc_pdev);
+ return PTR_ERR(rtc);
+ }
+
+ return 0;
+}
+
+static void __exit ppc_rtc_exit(void)
+{
+ rtc_device_unregister(rtc);
+ platform_device_unregister(ppc_rtc_pdev);
+}
+
+module_init(ppc_rtc_init);
+module_exit(ppc_rtc_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("Generic RTC class driver for PowerPC");
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 82f62d25f921..67421b0d3a7b 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -331,14 +331,14 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
RCNR = 0;
}
+ device_init_wakeup(&pdev->dev, 1);
+
rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops,
THIS_MODULE);
if (IS_ERR(rtc))
return PTR_ERR(rtc);
- device_init_wakeup(&pdev->dev, 1);
-
platform_set_drvdata(pdev, rtc);
return 0;
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index eaf55945f21b..7dcfba1bbfe1 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -71,6 +71,7 @@
#define X1205_SR_RTCF 0x01 /* Clock failure */
#define X1205_SR_WEL 0x02 /* Write Enable Latch */
#define X1205_SR_RWEL 0x04 /* Register Write Enable */
+#define X1205_SR_AL0 0x20 /* Alarm 0 match */
#define X1205_DTR_DTR0 0x01
#define X1205_DTR_DTR1 0x02
@@ -78,6 +79,8 @@
#define X1205_HR_MIL 0x80 /* Set in ccr.hour for 24 hr mode */
+#define X1205_INT_AL0E 0x20 /* Alarm 0 enable */
+
static struct i2c_driver x1205_driver;
/*
@@ -89,8 +92,8 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
unsigned char reg_base)
{
unsigned char dt_addr[2] = { 0, reg_base };
-
unsigned char buf[8];
+ int i;
struct i2c_msg msgs[] = {
{ client->addr, 0, 2, dt_addr }, /* setup read ptr */
@@ -98,7 +101,7 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
};
/* read date registers */
- if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+ if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
dev_err(&client->dev, "%s: read error\n", __func__);
return -EIO;
}
@@ -110,6 +113,11 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
buf[0], buf[1], buf[2], buf[3],
buf[4], buf[5], buf[6], buf[7]);
+ /* Mask out the enable bits if these are alarm registers */
+ if (reg_base < X1205_CCR_BASE)
+ for (i = 0; i <= 4; i++)
+ buf[i] &= 0x7F;
+
tm->tm_sec = BCD2BIN(buf[CCR_SEC]);
tm->tm_min = BCD2BIN(buf[CCR_MIN]);
tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */
@@ -138,7 +146,7 @@ static int x1205_get_status(struct i2c_client *client, unsigned char *sr)
};
/* read status register */
- if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+ if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
dev_err(&client->dev, "%s: read error\n", __func__);
return -EIO;
}
@@ -147,10 +155,11 @@ static int x1205_get_status(struct i2c_client *client, unsigned char *sr)
}
static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
- int datetoo, u8 reg_base)
+ int datetoo, u8 reg_base, unsigned char alm_enable)
{
- int i, xfer;
+ int i, xfer, nbytes;
unsigned char buf[8];
+ unsigned char rdata[10] = { 0, reg_base };
static const unsigned char wel[3] = { 0, X1205_REG_SR,
X1205_SR_WEL };
@@ -189,6 +198,11 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
buf[CCR_Y2K] = BIN2BCD(tm->tm_year / 100);
}
+ /* If writing alarm registers, set compare bits on registers 0-4 */
+ if (reg_base < X1205_CCR_BASE)
+ for (i = 0; i <= 4; i++)
+ buf[i] |= 0x80;
+
/* this sequence is required to unlock the chip */
if ((xfer = i2c_master_send(client, wel, 3)) != 3) {
dev_err(&client->dev, "%s: wel - %d\n", __func__, xfer);
@@ -200,19 +214,57 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
return -EIO;
}
+
/* write register's data */
- for (i = 0; i < (datetoo ? 8 : 3); i++) {
- unsigned char rdata[3] = { 0, reg_base + i, buf[i] };
+ if (datetoo)
+ nbytes = 8;
+ else
+ nbytes = 3;
+ for (i = 0; i < nbytes; i++)
+ rdata[2+i] = buf[i];
+
+ xfer = i2c_master_send(client, rdata, nbytes+2);
+ if (xfer != nbytes+2) {
+ dev_err(&client->dev,
+ "%s: result=%d addr=%02x, data=%02x\n",
+ __func__,
+ xfer, rdata[1], rdata[2]);
+ return -EIO;
+ }
+
+ /* If we wrote to the nonvolatile region, wait 10msec for write cycle*/
+ if (reg_base < X1205_CCR_BASE) {
+ unsigned char al0e[3] = { 0, X1205_REG_INT, 0 };
+
+ msleep(10);
- xfer = i2c_master_send(client, rdata, 3);
+ /* ...and set or clear the AL0E bit in the INT register */
+
+ /* Need to set RWEL again as the write has cleared it */
+ xfer = i2c_master_send(client, rwel, 3);
if (xfer != 3) {
dev_err(&client->dev,
- "%s: xfer=%d addr=%02x, data=%02x\n",
+ "%s: aloe rwel - %d\n",
__func__,
- xfer, rdata[1], rdata[2]);
+ xfer);
+ return -EIO;
+ }
+
+ if (alm_enable)
+ al0e[2] = X1205_INT_AL0E;
+
+ xfer = i2c_master_send(client, al0e, 3);
+ if (xfer != 3) {
+ dev_err(&client->dev,
+ "%s: al0e - %d\n",
+ __func__,
+ xfer);
return -EIO;
}
- };
+
+ /* and wait 10msec again for this write to complete */
+ msleep(10);
+ }
/* disable further writes */
if ((xfer = i2c_master_send(client, diswe, 3)) != 3) {
@@ -230,9 +282,9 @@ static int x1205_fix_osc(struct i2c_client *client)
tm.tm_hour = tm.tm_min = tm.tm_sec = 0;
- if ((err = x1205_set_datetime(client, &tm, 0, X1205_CCR_BASE)) < 0)
- dev_err(&client->dev,
- "unable to restart the oscillator\n");
+ err = x1205_set_datetime(client, &tm, 0, X1205_CCR_BASE, 0);
+ if (err < 0)
+ dev_err(&client->dev, "unable to restart the oscillator\n");
return err;
}
@@ -248,7 +300,7 @@ static int x1205_get_dtrim(struct i2c_client *client, int *trim)
};
/* read dtr register */
- if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+ if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
dev_err(&client->dev, "%s: read error\n", __func__);
return -EIO;
}
@@ -280,7 +332,7 @@ static int x1205_get_atrim(struct i2c_client *client, int *trim)
};
/* read atr register */
- if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+ if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
dev_err(&client->dev, "%s: read error\n", __func__);
return -EIO;
}
@@ -403,14 +455,33 @@ static int x1205_validate_client(struct i2c_client *client)
static int x1205_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
- return x1205_get_datetime(to_i2c_client(dev),
- &alrm->time, X1205_ALM0_BASE);
+ int err;
+ unsigned char intreg, status;
+ static unsigned char int_addr[2] = { 0, X1205_REG_INT };
+ struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_msg msgs[] = {
+ { client->addr, 0, 2, int_addr }, /* setup read ptr */
+ { client->addr, I2C_M_RD, 1, &intreg }, /* read INT register */
+ };
+
+ /* read interrupt register and status register */
+ if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) {
+ dev_err(&client->dev, "%s: read error\n", __func__);
+ return -EIO;
+ }
+ err = x1205_get_status(client, &status);
+ if (err == 0) {
+ alrm->pending = (status & X1205_SR_AL0) ? 1 : 0;
+ alrm->enabled = (intreg & X1205_INT_AL0E) ? 1 : 0;
+ err = x1205_get_datetime(client, &alrm->time, X1205_ALM0_BASE);
+ }
+ return err;
}
static int x1205_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
return x1205_set_datetime(to_i2c_client(dev),
- &alrm->time, 1, X1205_ALM0_BASE);
+ &alrm->time, 1, X1205_ALM0_BASE, alrm->enabled);
}
static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm)
@@ -422,7 +493,7 @@ static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm)
static int x1205_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
return x1205_set_datetime(to_i2c_client(dev),
- tm, 1, X1205_CCR_BASE);
+ tm, 1, X1205_CCR_BASE, 0);
}
static int x1205_rtc_proc(struct device *dev, struct seq_file *seq)
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-06 15:44:30 +0000