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-rw-r--r--drivers/rtc/Kconfig10
-rw-r--r--drivers/rtc/Makefile1
-rw-r--r--drivers/rtc/class.c1
-rw-r--r--drivers/rtc/hctosys.c59
-rw-r--r--drivers/rtc/rtc-at91sam9.c2
-rw-r--r--drivers/rtc/rtc-coh901331.c5
-rw-r--r--drivers/rtc/rtc-ds1742.c1
-rw-r--r--drivers/rtc/rtc-ep93xx.c71
-rw-r--r--drivers/rtc/rtc-max8925.c314
-rw-r--r--drivers/rtc/rtc-mc13783.c214
-rw-r--r--drivers/rtc/rtc-mxc.c7
-rw-r--r--drivers/rtc/rtc-pcf2123.c2
-rw-r--r--drivers/rtc/rtc-sysfs.c5
-rw-r--r--drivers/rtc/rtc-twl.c4
-rw-r--r--drivers/rtc/rtc-wm8350.c11
15 files changed, 601 insertions, 106 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 2bb8a8b7ffa..6a130375943 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -175,6 +175,16 @@ config RTC_DRV_MAX6900
This driver can also be built as a module. If so, the module
will be called rtc-max6900.
+config RTC_DRV_MAX8925
+ tristate "Maxim MAX8925"
+ depends on MFD_MAX8925
+ help
+ If you say yes here you will get support for the
+ RTC of Maxim MAX8925 PMIC.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-max8925.
+
config RTC_DRV_RS5C372
tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
help
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index b7148afb8f5..44ef194a957 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -52,6 +52,7 @@ obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o
obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o
obj-$(CONFIG_RTC_MXC) += rtc-mxc.o
obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o
+obj-$(CONFIG_RTC_DRV_MAX8925) += rtc-max8925.o
obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o
obj-$(CONFIG_RTC_DRV_MC13783) += rtc-mc13783.o
obj-$(CONFIG_RTC_DRV_MSM6242) += rtc-msm6242.o
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index be5a6b73e60..40845c7e932 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -226,6 +226,7 @@ static void __exit rtc_exit(void)
{
rtc_dev_exit();
class_destroy(rtc_class);
+ idr_destroy(&rtc_idr);
}
subsys_initcall(rtc_init);
diff --git a/drivers/rtc/hctosys.c b/drivers/rtc/hctosys.c
index 33c0e98243e..bc90b091f19 100644
--- a/drivers/rtc/hctosys.c
+++ b/drivers/rtc/hctosys.c
@@ -22,48 +22,57 @@
* the best guess is to add 0.5s.
*/
+int rtc_hctosys_ret = -ENODEV;
+
static int __init rtc_hctosys(void)
{
- int err;
+ int err = -ENODEV;
struct rtc_time tm;
+ struct timespec tv = {
+ .tv_nsec = NSEC_PER_SEC >> 1,
+ };
struct rtc_device *rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
if (rtc == NULL) {
- printk("%s: unable to open rtc device (%s)\n",
+ pr_err("%s: unable to open rtc device (%s)\n",
__FILE__, CONFIG_RTC_HCTOSYS_DEVICE);
- return -ENODEV;
+ goto err_open;
}
err = rtc_read_time(rtc, &tm);
- if (err == 0) {
- err = rtc_valid_tm(&tm);
- if (err == 0) {
- struct timespec tv;
+ if (err) {
+ dev_err(rtc->dev.parent,
+ "hctosys: unable to read the hardware clock\n");
+ goto err_read;
- tv.tv_nsec = NSEC_PER_SEC >> 1;
+ }
- rtc_tm_to_time(&tm, &tv.tv_sec);
+ err = rtc_valid_tm(&tm);
+ if (err) {
+ dev_err(rtc->dev.parent,
+ "hctosys: invalid date/time\n");
+ goto err_invalid;
+ }
- do_settimeofday(&tv);
+ rtc_tm_to_time(&tm, &tv.tv_sec);
- dev_info(rtc->dev.parent,
- "setting system clock to "
- "%d-%02d-%02d %02d:%02d:%02d UTC (%u)\n",
- tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
- tm.tm_hour, tm.tm_min, tm.tm_sec,
- (unsigned int) tv.tv_sec);
- }
- else
- dev_err(rtc->dev.parent,
- "hctosys: invalid date/time\n");
- }
- else
- dev_err(rtc->dev.parent,
- "hctosys: unable to read the hardware clock\n");
+ do_settimeofday(&tv);
+ dev_info(rtc->dev.parent,
+ "setting system clock to "
+ "%d-%02d-%02d %02d:%02d:%02d UTC (%u)\n",
+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec,
+ (unsigned int) tv.tv_sec);
+
+err_invalid:
+err_read:
rtc_class_close(rtc);
- return 0;
+err_open:
+ rtc_hctosys_ret = err;
+
+ return err;
}
late_initcall(rtc_hctosys);
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 86c61f14351..78a018b5c94 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -161,7 +161,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
if (offset == 0)
return -EILSEQ;
- memset(alrm, 0, sizeof(alrm));
+ memset(alrm, 0, sizeof(*alrm));
if (alarm != ALARM_DISABLED && offset != 0) {
rtc_time_to_tm(offset + alarm, tm);
diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c
index 03ea530981d..44c4399ee71 100644
--- a/drivers/rtc/rtc-coh901331.c
+++ b/drivers/rtc/rtc-coh901331.c
@@ -271,12 +271,13 @@ static int coh901331_resume(struct platform_device *pdev)
{
struct coh901331_port *rtap = dev_get_drvdata(&pdev->dev);
- if (device_may_wakeup(&pdev->dev))
+ if (device_may_wakeup(&pdev->dev)) {
disable_irq_wake(rtap->irq);
- else
+ } else {
clk_enable(rtap->clk);
writel(rtap->irqmaskstore, rtap->virtbase + COH901331_IRQ_MASK);
clk_disable(rtap->clk);
+ }
return 0;
}
#else
diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
index a1273360a44..cad9ceb89ba 100644
--- a/drivers/rtc/rtc-ds1742.c
+++ b/drivers/rtc/rtc-ds1742.c
@@ -184,6 +184,7 @@ static int __devinit ds1742_rtc_probe(struct platform_device *pdev)
pdata->size_nvram = pdata->size - RTC_SIZE;
pdata->ioaddr_rtc = ioaddr + pdata->size_nvram;
+ sysfs_bin_attr_init(&pdata->nvram_attr);
pdata->nvram_attr.attr.name = "nvram";
pdata->nvram_attr.attr.mode = S_IRUGO | S_IWUSR;
pdata->nvram_attr.read = ds1742_nvram_read;
diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c
index 9da02d108b7..91bde976bc0 100644
--- a/drivers/rtc/rtc-ep93xx.c
+++ b/drivers/rtc/rtc-ep93xx.c
@@ -115,6 +115,15 @@ static ssize_t ep93xx_rtc_show_comp_delete(struct device *dev,
}
static DEVICE_ATTR(comp_delete, S_IRUGO, ep93xx_rtc_show_comp_delete, NULL);
+static struct attribute *ep93xx_rtc_attrs[] = {
+ &dev_attr_comp_preload.attr,
+ &dev_attr_comp_delete.attr,
+ NULL
+};
+
+static const struct attribute_group ep93xx_rtc_sysfs_files = {
+ .attrs = ep93xx_rtc_attrs,
+};
static int __init ep93xx_rtc_probe(struct platform_device *pdev)
{
@@ -123,27 +132,22 @@ static int __init ep93xx_rtc_probe(struct platform_device *pdev)
struct rtc_device *rtc;
int err;
- ep93xx_rtc = kzalloc(sizeof(struct ep93xx_rtc), GFP_KERNEL);
- if (ep93xx_rtc == NULL)
+ ep93xx_rtc = devm_kzalloc(&pdev->dev, sizeof(*ep93xx_rtc), GFP_KERNEL);
+ if (!ep93xx_rtc)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
- err = -ENXIO;
- goto fail_free;
- }
+ if (!res)
+ return -ENXIO;
- res = request_mem_region(res->start, resource_size(res), pdev->name);
- if (res == NULL) {
- err = -EBUSY;
- goto fail_free;
- }
+ if (!devm_request_mem_region(&pdev->dev, res->start,
+ resource_size(res), pdev->name))
+ return -EBUSY;
- ep93xx_rtc->mmio_base = ioremap(res->start, resource_size(res));
- if (ep93xx_rtc->mmio_base == NULL) {
- err = -ENXIO;
- goto fail;
- }
+ ep93xx_rtc->mmio_base = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
+ if (!ep93xx_rtc->mmio_base)
+ return -ENXIO;
pdev->dev.platform_data = ep93xx_rtc;
@@ -151,53 +155,34 @@ static int __init ep93xx_rtc_probe(struct platform_device *pdev)
&pdev->dev, &ep93xx_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
err = PTR_ERR(rtc);
- goto fail;
+ goto exit;
}
platform_set_drvdata(pdev, rtc);
- err = device_create_file(&pdev->dev, &dev_attr_comp_preload);
+ err = sysfs_create_group(&pdev->dev.kobj, &ep93xx_rtc_sysfs_files);
if (err)
goto fail;
- err = device_create_file(&pdev->dev, &dev_attr_comp_delete);
- if (err) {
- device_remove_file(&pdev->dev, &dev_attr_comp_preload);
- goto fail;
- }
return 0;
fail:
- if (ep93xx_rtc->mmio_base) {
- iounmap(ep93xx_rtc->mmio_base);
- pdev->dev.platform_data = NULL;
- }
- release_mem_region(res->start, resource_size(res));
-fail_free:
- kfree(ep93xx_rtc);
+ platform_set_drvdata(pdev, NULL);
+ rtc_device_unregister(rtc);
+exit:
+ pdev->dev.platform_data = NULL;
return err;
}
static int __exit ep93xx_rtc_remove(struct platform_device *pdev)
{
struct rtc_device *rtc = platform_get_drvdata(pdev);
- struct ep93xx_rtc *ep93xx_rtc = pdev->dev.platform_data;
- struct resource *res;
-
- /* cleanup sysfs */
- device_remove_file(&pdev->dev, &dev_attr_comp_delete);
- device_remove_file(&pdev->dev, &dev_attr_comp_preload);
+ sysfs_remove_group(&pdev->dev.kobj, &ep93xx_rtc_sysfs_files);
+ platform_set_drvdata(pdev, NULL);
rtc_device_unregister(rtc);
-
- iounmap(ep93xx_rtc->mmio_base);
pdev->dev.platform_data = NULL;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, resource_size(res));
-
- platform_set_drvdata(pdev, NULL);
-
return 0;
}
diff --git a/drivers/rtc/rtc-max8925.c b/drivers/rtc/rtc-max8925.c
new file mode 100644
index 00000000000..acdbb176018
--- /dev/null
+++ b/drivers/rtc/rtc-max8925.c
@@ -0,0 +1,314 @@
+/*
+ * RTC driver for Maxim MAX8925
+ *
+ * Copyright (C) 2009-2010 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * 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/platform_device.h>
+#include <linux/mfd/max8925.h>
+
+enum {
+ RTC_SEC = 0,
+ RTC_MIN,
+ RTC_HOUR,
+ RTC_WEEKDAY,
+ RTC_DATE,
+ RTC_MONTH,
+ RTC_YEAR1,
+ RTC_YEAR2,
+};
+
+#define MAX8925_RTC_SEC 0x00
+#define MAX8925_RTC_MIN 0x01
+#define MAX8925_RTC_HOUR 0x02
+#define MAX8925_RTC_WEEKDAY 0x03
+#define MAX8925_RTC_DATE 0x04
+#define MAX8925_RTC_MONTH 0x05
+#define MAX8925_RTC_YEAR1 0x06
+#define MAX8925_RTC_YEAR2 0x07
+#define MAX8925_ALARM0_SEC 0x08
+#define MAX8925_ALARM0_MIN 0x09
+#define MAX8925_ALARM0_HOUR 0x0a
+#define MAX8925_ALARM0_WEEKDAY 0x0b
+#define MAX8925_ALARM0_DATE 0x0c
+#define MAX8925_ALARM0_MON 0x0d
+#define MAX8925_ALARM0_YEAR1 0x0e
+#define MAX8925_ALARM0_YEAR2 0x0f
+#define MAX8925_ALARM1_SEC 0x10
+#define MAX8925_ALARM1_MIN 0x11
+#define MAX8925_ALARM1_HOUR 0x12
+#define MAX8925_ALARM1_WEEKDAY 0x13
+#define MAX8925_ALARM1_DATE 0x14
+#define MAX8925_ALARM1_MON 0x15
+#define MAX8925_ALARM1_YEAR1 0x16
+#define MAX8925_ALARM1_YEAR2 0x17
+#define MAX8925_RTC_CNTL 0x1b
+#define MAX8925_RTC_STATUS 0x20
+
+#define TIME_NUM 8
+#define ALARM_1SEC (1 << 7)
+#define HOUR_12 (1 << 7)
+#define HOUR_AM_PM (1 << 5)
+#define ALARM0_IRQ (1 << 3)
+#define ALARM1_IRQ (1 << 2)
+#define ALARM0_STATUS (1 << 2)
+#define ALARM1_STATUS (1 << 1)
+
+
+struct max8925_rtc_info {
+ struct rtc_device *rtc_dev;
+ struct max8925_chip *chip;
+ struct i2c_client *rtc;
+ struct device *dev;
+};
+
+static irqreturn_t rtc_update_handler(int irq, void *data)
+{
+ struct max8925_rtc_info *info = (struct max8925_rtc_info *)data;
+
+ /* disable ALARM0 except for 1SEC alarm */
+ max8925_set_bits(info->rtc, MAX8925_ALARM0_CNTL, 0x7f, 0);
+ rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF);
+ return IRQ_HANDLED;
+}
+
+static int tm_calc(struct rtc_time *tm, unsigned char *buf, int len)
+{
+ if (len < TIME_NUM)
+ return -EINVAL;
+ tm->tm_year = (buf[RTC_YEAR2] >> 4) * 1000
+ + (buf[RTC_YEAR2] & 0xf) * 100
+ + (buf[RTC_YEAR1] >> 4) * 10
+ + (buf[RTC_YEAR1] & 0xf);
+ tm->tm_year -= 1900;
+ tm->tm_mon = ((buf[RTC_MONTH] >> 4) & 0x01) * 10
+ + (buf[RTC_MONTH] & 0x0f);
+ tm->tm_mday = ((buf[RTC_DATE] >> 4) & 0x03) * 10
+ + (buf[RTC_DATE] & 0x0f);
+ tm->tm_wday = buf[RTC_WEEKDAY] & 0x07;
+ if (buf[RTC_HOUR] & HOUR_12) {
+ tm->tm_hour = ((buf[RTC_HOUR] >> 4) & 0x1) * 10
+ + (buf[RTC_HOUR] & 0x0f);
+ if (buf[RTC_HOUR] & HOUR_AM_PM)
+ tm->tm_hour += 12;
+ } else
+ tm->tm_hour = ((buf[RTC_HOUR] >> 4) & 0x03) * 10
+ + (buf[RTC_HOUR] & 0x0f);
+ tm->tm_min = ((buf[RTC_MIN] >> 4) & 0x7) * 10
+ + (buf[RTC_MIN] & 0x0f);
+ tm->tm_sec = ((buf[RTC_SEC] >> 4) & 0x7) * 10
+ + (buf[RTC_SEC] & 0x0f);
+ return 0;
+}
+
+static int data_calc(unsigned char *buf, struct rtc_time *tm, int len)
+{
+ unsigned char high, low;
+
+ if (len < TIME_NUM)
+ return -EINVAL;
+
+ high = (tm->tm_year + 1900) / 1000;
+ low = (tm->tm_year + 1900) / 100;
+ low = low - high * 10;
+ buf[RTC_YEAR2] = (high << 4) + low;
+ high = (tm->tm_year + 1900) / 10;
+ low = tm->tm_year + 1900;
+ low = low - high * 10;
+ high = high - (high / 10) * 10;
+ buf[RTC_YEAR1] = (high << 4) + low;
+ high = tm->tm_mon / 10;
+ low = tm->tm_mon;
+ low = low - high * 10;
+ buf[RTC_MONTH] = (high << 4) + low;
+ high = tm->tm_mday / 10;
+ low = tm->tm_mday;
+ low = low - high * 10;
+ buf[RTC_DATE] = (high << 4) + low;
+ buf[RTC_WEEKDAY] = tm->tm_wday;
+ high = tm->tm_hour / 10;
+ low = tm->tm_hour;
+ low = low - high * 10;
+ buf[RTC_HOUR] = (high << 4) + low;
+ high = tm->tm_min / 10;
+ low = tm->tm_min;
+ low = low - high * 10;
+ buf[RTC_MIN] = (high << 4) + low;
+ high = tm->tm_sec / 10;
+ low = tm->tm_sec;
+ low = low - high * 10;
+ buf[RTC_SEC] = (high << 4) + low;
+ return 0;
+}
+
+static int max8925_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ struct max8925_rtc_info *info = dev_get_drvdata(dev);
+ unsigned char buf[TIME_NUM];
+ int ret;
+
+ ret = max8925_bulk_read(info->rtc, MAX8925_RTC_SEC, TIME_NUM, buf);
+ if (ret < 0)
+ goto out;
+ ret = tm_calc(tm, buf, TIME_NUM);
+out:
+ return ret;
+}
+
+static int max8925_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ struct max8925_rtc_info *info = dev_get_drvdata(dev);
+ unsigned char buf[TIME_NUM];
+ int ret;
+
+ ret = data_calc(buf, tm, TIME_NUM);
+ if (ret < 0)
+ goto out;
+ ret = max8925_bulk_write(info->rtc, MAX8925_RTC_SEC, TIME_NUM, buf);
+out:
+ return ret;
+}
+
+static int max8925_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct max8925_rtc_info *info = dev_get_drvdata(dev);
+ unsigned char buf[TIME_NUM];
+ int ret;
+
+ ret = max8925_bulk_read(info->rtc, MAX8925_ALARM0_SEC, TIME_NUM, buf);
+ if (ret < 0)
+ goto out;
+ ret = tm_calc(&alrm->time, buf, TIME_NUM);
+ if (ret < 0)
+ goto out;
+ ret = max8925_reg_read(info->rtc, MAX8925_RTC_IRQ_MASK);
+ if (ret < 0)
+ goto out;
+ if ((ret & ALARM0_IRQ) == 0)
+ alrm->enabled = 1;
+ else
+ alrm->enabled = 0;
+ ret = max8925_reg_read(info->rtc, MAX8925_RTC_STATUS);
+ if (ret < 0)
+ goto out;
+ if (ret & ALARM0_STATUS)
+ alrm->pending = 1;
+ else
+ alrm->pending = 0;
+out:
+ return ret;
+}
+
+static int max8925_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct max8925_rtc_info *info = dev_get_drvdata(dev);
+ unsigned char buf[TIME_NUM];
+ int ret;
+
+ ret = data_calc(buf, &alrm->time, TIME_NUM);
+ if (ret < 0)
+ goto out;
+ ret = max8925_bulk_write(info->rtc, MAX8925_ALARM0_SEC, TIME_NUM, buf);
+ if (ret < 0)
+ goto out;
+ /* only enable alarm on year/month/day/hour/min/sec */
+ ret = max8925_reg_write(info->rtc, MAX8925_ALARM0_CNTL, 0x77);
+ if (ret < 0)
+ goto out;
+out:
+ return ret;
+}
+
+static const struct rtc_class_ops max8925_rtc_ops = {
+ .read_time = max8925_rtc_read_time,
+ .set_time = max8925_rtc_set_time,
+ .read_alarm = max8925_rtc_read_alarm,
+ .set_alarm = max8925_rtc_set_alarm,
+};
+
+static int __devinit max8925_rtc_probe(struct platform_device *pdev)
+{
+ struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
+ struct max8925_rtc_info *info;
+ int irq, ret;
+
+ info = kzalloc(sizeof(struct max8925_rtc_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+ info->chip = chip;
+ info->rtc = chip->rtc;
+ info->dev = &pdev->dev;
+ irq = chip->irq_base + MAX8925_IRQ_RTC_ALARM0;
+
+ ret = request_threaded_irq(irq, NULL, rtc_update_handler,
+ IRQF_ONESHOT, "rtc-alarm0", info);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
+ irq, ret);
+ goto out_irq;
+ }
+
+ info->rtc_dev = rtc_device_register("max8925-rtc", &pdev->dev,
+ &max8925_rtc_ops, THIS_MODULE);
+ ret = PTR_ERR(info->rtc_dev);
+ if (IS_ERR(info->rtc_dev)) {
+ dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
+ goto out_rtc;
+ }
+
+ dev_set_drvdata(&pdev->dev, info);
+ platform_set_drvdata(pdev, info);
+
+ return 0;
+out_rtc:
+ free_irq(chip->irq_base + MAX8925_IRQ_RTC_ALARM0, info);
+out_irq:
+ kfree(info);
+ return ret;
+}
+
+static int __devexit max8925_rtc_remove(struct platform_device *pdev)
+{
+ struct max8925_rtc_info *info = platform_get_drvdata(pdev);
+
+ if (info) {
+ free_irq(info->chip->irq_base + MAX8925_IRQ_RTC_ALARM0, info);
+ rtc_device_unregister(info->rtc_dev);
+ kfree(info);
+ }
+ return 0;
+}
+
+static struct platform_driver max8925_rtc_driver = {
+ .driver = {
+ .name = "max8925-rtc",
+ .owner = THIS_MODULE,
+ },
+ .probe = max8925_rtc_probe,
+ .remove = __devexit_p(max8925_rtc_remove),
+};
+
+static int __init max8925_rtc_init(void)
+{
+ return platform_driver_register(&max8925_rtc_driver);
+}
+module_init(max8925_rtc_init);
+
+static void __exit max8925_rtc_exit(void)
+{
+ platform_driver_unregister(&max8925_rtc_driver);
+}
+module_exit(max8925_rtc_exit);
+
+MODULE_DESCRIPTION("Maxim MAX8925 RTC driver");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/rtc/rtc-mc13783.c b/drivers/rtc/rtc-mc13783.c
index 850f983c039..d60c81b7b69 100644
--- a/drivers/rtc/rtc-mc13783.c
+++ b/drivers/rtc/rtc-mc13783.c
@@ -28,6 +28,34 @@ struct mc13783_rtc {
int valid;
};
+static int mc13783_rtc_irq_enable_unlocked(struct device *dev,
+ unsigned int enabled, int irq)
+{
+ struct mc13783_rtc *priv = dev_get_drvdata(dev);
+ int (*func)(struct mc13783 *mc13783, int irq);
+
+ if (!priv->valid)
+ return -ENODATA;
+
+ func = enabled ? mc13783_irq_unmask : mc13783_irq_mask;
+ return func(priv->mc13783, irq);
+}
+
+static int mc13783_rtc_irq_enable(struct device *dev,
+ unsigned int enabled, int irq)
+{
+ struct mc13783_rtc *priv = dev_get_drvdata(dev);
+ int ret;
+
+ mc13783_lock(priv->mc13783);
+
+ ret = mc13783_rtc_irq_enable_unlocked(dev, enabled, irq);
+
+ mc13783_unlock(priv->mc13783);
+
+ return ret;
+}
+
static int mc13783_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct mc13783_rtc *priv = dev_get_drvdata(dev);
@@ -78,6 +106,7 @@ static int mc13783_rtc_set_mmss(struct device *dev, unsigned long secs)
{
struct mc13783_rtc *priv = dev_get_drvdata(dev);
unsigned int seconds, days;
+ unsigned int alarmseconds;
int ret;
seconds = secs % 86400;
@@ -86,7 +115,22 @@ static int mc13783_rtc_set_mmss(struct device *dev, unsigned long secs)
mc13783_lock(priv->mc13783);
/*
- * first write seconds=0 to prevent a day switch between writing days
+ * temporarily invalidate alarm to prevent triggering it when the day is
+ * already updated while the time isn't yet.
+ */
+ ret = mc13783_reg_read(priv->mc13783, MC13783_RTCTODA, &alarmseconds);
+ if (unlikely(ret))
+ goto out;
+
+ if (alarmseconds < 86400) {
+ ret = mc13783_reg_write(priv->mc13783,
+ MC13783_RTCTODA, 0x1ffff);
+ if (unlikely(ret))
+ goto out;
+ }
+
+ /*
+ * write seconds=0 to prevent a day switch between writing days
* and seconds below
*/
ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTOD, 0);
@@ -101,11 +145,19 @@ static int mc13783_rtc_set_mmss(struct device *dev, unsigned long secs)
if (unlikely(ret))
goto out;
- ret = mc13783_ackirq(priv->mc13783, MC13783_IRQ_RTCRST);
+ /* restore alarm */
+ if (alarmseconds < 86400) {
+ ret = mc13783_reg_write(priv->mc13783,
+ MC13783_RTCTODA, alarmseconds);
+ if (unlikely(ret))
+ goto out;
+ }
+
+ ret = mc13783_irq_ack(priv->mc13783, MC13783_IRQ_RTCRST);
if (unlikely(ret))
goto out;
- ret = mc13783_unmask(priv->mc13783, MC13783_IRQ_RTCRST);
+ ret = mc13783_irq_unmask(priv->mc13783, MC13783_IRQ_RTCRST);
out:
priv->valid = !ret;
@@ -114,41 +166,139 @@ out:
return ret;
}
-static irqreturn_t mc13783_rtc_update_handler(int irq, void *dev)
+static int mc13783_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
- struct mc13783_rtc *priv = dev;
- struct mc13783 *mc13783 = priv->mc13783;
+ struct mc13783_rtc *priv = dev_get_drvdata(dev);
+ unsigned seconds, days;
+ unsigned long s1970;
+ int enabled, pending;
+ int ret;
- dev_dbg(&priv->rtc->dev, "1HZ\n");
+ mc13783_lock(priv->mc13783);
- rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_UF);
+ ret = mc13783_reg_read(priv->mc13783, MC13783_RTCTODA, &seconds);
+ if (unlikely(ret))
+ goto out;
+ if (seconds >= 86400) {
+ ret = -ENODATA;
+ goto out;
+ }
+
+ ret = mc13783_reg_read(priv->mc13783, MC13783_RTCDAY, &days);
+ if (unlikely(ret))
+ goto out;
- mc13783_ackirq(mc13783, irq);
+ ret = mc13783_irq_status(priv->mc13783, MC13783_IRQ_TODA,
+ &enabled, &pending);
- return IRQ_HANDLED;
+out:
+ mc13783_unlock(priv->mc13783);
+
+ if (ret)
+ return ret;
+
+ alarm->enabled = enabled;
+ alarm->pending = pending;
+
+ s1970 = days * 86400 + seconds;
+
+ rtc_time_to_tm(s1970, &alarm->time);
+ dev_dbg(dev, "%s: %lu\n", __func__, s1970);
+
+ return 0;
}
-static int mc13783_rtc_update_irq_enable(struct device *dev,
- unsigned int enabled)
+static int mc13783_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct mc13783_rtc *priv = dev_get_drvdata(dev);
- int ret = -ENODATA;
+ unsigned long s1970;
+ unsigned seconds, days;
+ int ret;
mc13783_lock(priv->mc13783);
- if (!priv->valid)
+
+ /* disable alarm to prevent false triggering */
+ ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTODA, 0x1ffff);
+ if (unlikely(ret))
goto out;
- ret = (enabled ? mc13783_unmask : mc13783_mask)(priv->mc13783,
- MC13783_IRQ_1HZ);
+ ret = mc13783_irq_ack(priv->mc13783, MC13783_IRQ_TODA);
+ if (unlikely(ret))
+ goto out;
+
+ ret = rtc_tm_to_time(&alarm->time, &s1970);
+ if (unlikely(ret))
+ goto out;
+
+ dev_dbg(dev, "%s: o%2.s %lu\n", __func__, alarm->enabled ? "n" : "ff",
+ s1970);
+
+ ret = mc13783_rtc_irq_enable_unlocked(dev, alarm->enabled,
+ MC13783_IRQ_TODA);
+ if (unlikely(ret))
+ goto out;
+
+ seconds = s1970 % 86400;
+ days = s1970 / 86400;
+
+ ret = mc13783_reg_write(priv->mc13783, MC13783_RTCDAYA, days);
+ if (unlikely(ret))
+ goto out;
+
+ ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTODA, seconds);
+
out:
mc13783_unlock(priv->mc13783);
return ret;
}
+static irqreturn_t mc13783_rtc_alarm_handler(int irq, void *dev)
+{
+ struct mc13783_rtc *priv = dev;
+ struct mc13783 *mc13783 = priv->mc13783;
+
+ dev_dbg(&priv->rtc->dev, "Alarm\n");
+
+ rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_AF);
+
+ mc13783_irq_ack(mc13783, irq);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t mc13783_rtc_update_handler(int irq, void *dev)
+{
+ struct mc13783_rtc *priv = dev;
+ struct mc13783 *mc13783 = priv->mc13783;
+
+ dev_dbg(&priv->rtc->dev, "1HZ\n");
+
+ rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_UF);
+
+ mc13783_irq_ack(mc13783, irq);
+
+ return IRQ_HANDLED;
+}
+
+static int mc13783_rtc_update_irq_enable(struct device *dev,
+ unsigned int enabled)
+{
+ return mc13783_rtc_irq_enable(dev, enabled, MC13783_IRQ_1HZ);
+}
+
+static int mc13783_rtc_alarm_irq_enable(struct device *dev,
+ unsigned int enabled)
+{
+ return mc13783_rtc_irq_enable(dev, enabled, MC13783_IRQ_TODA);
+}
+
static const struct rtc_class_ops mc13783_rtc_ops = {
.read_time = mc13783_rtc_read_time,
.set_mmss = mc13783_rtc_set_mmss,
+ .read_alarm = mc13783_rtc_read_alarm,
+ .set_alarm = mc13783_rtc_set_alarm,
+ .alarm_irq_enable = mc13783_rtc_alarm_irq_enable,
.update_irq_enable = mc13783_rtc_update_irq_enable,
};
@@ -160,7 +310,7 @@ static irqreturn_t mc13783_rtc_reset_handler(int irq, void *dev)
dev_dbg(&priv->rtc->dev, "RTCRST\n");
priv->valid = 0;
- mc13783_mask(mc13783, irq);
+ mc13783_irq_mask(mc13783, irq);
return IRQ_HANDLED;
}
@@ -169,6 +319,7 @@ static int __devinit mc13783_rtc_probe(struct platform_device *pdev)
{
int ret;
struct mc13783_rtc *priv;
+ int rtcrst_pending;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -177,8 +328,6 @@ static int __devinit mc13783_rtc_probe(struct platform_device *pdev)
priv->mc13783 = dev_get_drvdata(pdev->dev.parent);
platform_set_drvdata(pdev, priv);
- priv->valid = 1;
-
mc13783_lock(priv->mc13783);
ret = mc13783_irq_request(priv->mc13783, MC13783_IRQ_RTCRST,
@@ -186,33 +335,45 @@ static int __devinit mc13783_rtc_probe(struct platform_device *pdev)
if (ret)
goto err_reset_irq_request;
+ ret = mc13783_irq_status(priv->mc13783, MC13783_IRQ_RTCRST,
+ NULL, &rtcrst_pending);
+ if (ret)
+ goto err_reset_irq_status;
+
+ priv->valid = !rtcrst_pending;
+
ret = mc13783_irq_request_nounmask(priv->mc13783, MC13783_IRQ_1HZ,
mc13783_rtc_update_handler, DRIVER_NAME, priv);
if (ret)
goto err_update_irq_request;
- mc13783_unlock(priv->mc13783);
+ ret = mc13783_irq_request_nounmask(priv->mc13783, MC13783_IRQ_TODA,
+ mc13783_rtc_alarm_handler, DRIVER_NAME, priv);
+ if (ret)
+ goto err_alarm_irq_request;
priv->rtc = rtc_device_register(pdev->name,
&pdev->dev, &mc13783_rtc_ops, THIS_MODULE);
-
if (IS_ERR(priv->rtc)) {
ret = PTR_ERR(priv->rtc);
- mc13783_lock(priv->mc13783);
+ mc13783_irq_free(priv->mc13783, MC13783_IRQ_TODA, priv);
+err_alarm_irq_request:
mc13783_irq_free(priv->mc13783, MC13783_IRQ_1HZ, priv);
err_update_irq_request:
+err_reset_irq_status:
+
mc13783_irq_free(priv->mc13783, MC13783_IRQ_RTCRST, priv);
err_reset_irq_request:
- mc13783_unlock(priv->mc13783);
-
platform_set_drvdata(pdev, NULL);
kfree(priv);
}
+ mc13783_unlock(priv->mc13783);
+
return ret;
}
@@ -220,10 +381,11 @@ static int __devexit mc13783_rtc_remove(struct platform_device *pdev)
{
struct mc13783_rtc *priv = platform_get_drvdata(pdev);
- rtc_device_unregister(priv->rtc);
-
mc13783_lock(priv->mc13783);
+ rtc_device_unregister(priv->rtc);
+
+ mc13783_irq_free(priv->mc13783, MC13783_IRQ_TODA, priv);
mc13783_irq_free(priv->mc13783, MC13783_IRQ_1HZ, priv);
mc13783_irq_free(priv->mc13783, MC13783_IRQ_RTCRST, priv);
diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index 6bd5072d4eb..8710f9415d9 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -396,8 +396,11 @@ static int __init mxc_rtc_probe(struct platform_device *pdev)
pdata->ioaddr = ioremap(res->start, resource_size(res));
clk = clk_get(&pdev->dev, "ckil");
- if (IS_ERR(clk))
- return PTR_ERR(clk);
+ if (IS_ERR(clk)) {
+ iounmap(pdata->ioaddr);
+ ret = PTR_ERR(clk);
+ goto exit_free_pdata;
+ }
rate = clk_get_rate(clk);
clk_put(clk);
diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c
index e75df9d50e2..2ceb365533b 100644
--- a/drivers/rtc/rtc-pcf2123.c
+++ b/drivers/rtc/rtc-pcf2123.c
@@ -315,7 +315,7 @@ kfree_exit:
return ret;
}
-static int pcf2123_remove(struct spi_device *spi)
+static int __devexit pcf2123_remove(struct spi_device *spi)
{
struct pcf2123_plat_data *pdata = spi->dev.platform_data;
int i;
diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c
index 7dd23a6fc82..380083ca572 100644
--- a/drivers/rtc/rtc-sysfs.c
+++ b/drivers/rtc/rtc-sysfs.c
@@ -107,8 +107,9 @@ rtc_sysfs_show_hctosys(struct device *dev, struct device_attribute *attr,
char *buf)
{
#ifdef CONFIG_RTC_HCTOSYS_DEVICE
- if (strcmp(dev_name(&to_rtc_device(dev)->dev),
- CONFIG_RTC_HCTOSYS_DEVICE) == 0)
+ if (rtc_hctosys_ret == 0 &&
+ strcmp(dev_name(&to_rtc_device(dev)->dev),
+ CONFIG_RTC_HCTOSYS_DEVICE) == 0)
return sprintf(buf, "1\n");
else
#endif
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index c6a83a2a722..ed1b8682812 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -57,7 +57,7 @@ enum {
REG_RTC_COMP_LSB_REG,
REG_RTC_COMP_MSB_REG,
};
-const static u8 twl4030_rtc_reg_map[] = {
+static const u8 twl4030_rtc_reg_map[] = {
[REG_SECONDS_REG] = 0x00,
[REG_MINUTES_REG] = 0x01,
[REG_HOURS_REG] = 0x02,
@@ -80,7 +80,7 @@ const static u8 twl4030_rtc_reg_map[] = {
[REG_RTC_COMP_LSB_REG] = 0x10,
[REG_RTC_COMP_MSB_REG] = 0x11,
};
-const static u8 twl6030_rtc_reg_map[] = {
+static const u8 twl6030_rtc_reg_map[] = {
[REG_SECONDS_REG] = 0x00,
[REG_MINUTES_REG] = 0x01,
[REG_HOURS_REG] = 0x02,
diff --git a/drivers/rtc/rtc-wm8350.c b/drivers/rtc/rtc-wm8350.c
index f1e440521c5..3d0dc76b38a 100644
--- a/drivers/rtc/rtc-wm8350.c
+++ b/drivers/rtc/rtc-wm8350.c
@@ -307,11 +307,18 @@ static int wm8350_rtc_update_irq_enable(struct device *dev,
{
struct wm8350 *wm8350 = dev_get_drvdata(dev);
+ /* Suppress duplicate changes since genirq nests enable and
+ * disable calls. */
+ if (enabled == wm8350->rtc.update_enabled)
+ return 0;
+
if (enabled)
wm8350_unmask_irq(wm8350, WM8350_IRQ_RTC_SEC);
else
wm8350_mask_irq(wm8350, WM8350_IRQ_RTC_SEC);
+ wm8350->rtc.update_enabled = enabled;
+
return 0;
}
@@ -478,8 +485,8 @@ static int __devexit wm8350_rtc_remove(struct platform_device *pdev)
struct wm8350 *wm8350 = platform_get_drvdata(pdev);
struct wm8350_rtc *wm_rtc = &wm8350->rtc;
- wm8350_free_irq(wm8350, WM8350_IRQ_RTC_SEC);
- wm8350_free_irq(wm8350, WM8350_IRQ_RTC_ALM);
+ wm8350_free_irq(wm8350, WM8350_IRQ_RTC_SEC, wm8350);
+ wm8350_free_irq(wm8350, WM8350_IRQ_RTC_ALM, wm8350);
rtc_device_unregister(wm_rtc->rtc);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-18 10:24:07 +0000