diff options
Diffstat (limited to 'packages/linux/ixp4xx-kernel/2.6.15/40-rtc-class.patch')
| -rw-r--r-- | packages/linux/ixp4xx-kernel/2.6.15/40-rtc-class.patch | 3208 |
1 files changed, 0 insertions, 3208 deletions
diff --git a/packages/linux/ixp4xx-kernel/2.6.15/40-rtc-class.patch b/packages/linux/ixp4xx-kernel/2.6.15/40-rtc-class.patch deleted file mode 100644 index 3b36813564..0000000000 --- a/packages/linux/ixp4xx-kernel/2.6.15/40-rtc-class.patch +++ /dev/null @@ -1,3208 +0,0 @@ ---- linux-nslu2.orig/include/linux/rtc.h 2006-01-20 12:04:18.000000000 +0100 -+++ linux-nslu2/include/linux/rtc.h 2006-01-20 20:23:24.000000000 +0100 -@@ -91,8 +91,91 @@ struct rtc_pll_info { - #define RTC_PLL_GET _IOR('p', 0x11, struct rtc_pll_info) /* Get PLL correction */ - #define RTC_PLL_SET _IOW('p', 0x12, struct rtc_pll_info) /* Set PLL correction */ - -+/* interrupt flags */ -+#define RTC_IRQF 0x80 /* any of the following is active */ -+#define RTC_PF 0x40 -+#define RTC_AF 0x20 -+#define RTC_UF 0x10 -+ - #ifdef __KERNEL__ - -+#include <linux/device.h> -+#include <linux/seq_file.h> -+#include <linux/cdev.h> -+#include <linux/poll.h> -+ -+struct rtc_class_ops { -+ int (*open)(struct device *); -+ void (*release)(struct device *); -+ int (*ioctl)(struct device *, unsigned int, unsigned long); -+ int (*read_time)(struct device *, struct rtc_time *); -+ int (*set_time)(struct device *, struct rtc_time *); -+ int (*read_alarm)(struct device *, struct rtc_wkalrm *); -+ int (*set_alarm)(struct device *, struct rtc_wkalrm *); -+ int (*proc)(struct device *, struct seq_file *); -+ int (*set_mmss)(struct device *, unsigned long secs); -+ int (*irq_set_state)(struct device *, int enabled); -+ int (*irq_set_freq)(struct device *, int freq); -+}; -+ -+#define RTC_DEVICE_NAME_SIZE 20 -+struct rtc_task; -+ -+struct rtc_device -+{ -+ int id; -+ struct module *owner; -+ struct class_device class_dev; -+ struct semaphore ops_lock; -+ struct rtc_class_ops *ops; -+ char name[RTC_DEVICE_NAME_SIZE]; -+ -+ struct cdev char_dev; -+ struct semaphore char_sem; -+ -+ unsigned long irq_data; -+ spinlock_t irq_lock; -+ wait_queue_head_t irq_queue; -+ struct fasync_struct *async_queue; -+ -+ spinlock_t irq_task_lock; -+ struct rtc_task *irq_task; -+ int irq_freq; -+}; -+#define to_rtc_device(d) container_of(d, struct rtc_device, class_dev) -+ -+extern struct rtc_device *rtc_device_register(char *name, -+ struct device *dev, -+ struct rtc_class_ops *ops, -+ struct module *owner); -+extern void rtc_device_unregister(struct rtc_device *rdev); -+extern int rtc_interface_register(struct class_interface *intf); -+ -+extern int rtc_month_days(unsigned int month, unsigned int year); -+extern int rtc_valid_tm(struct rtc_time *tm); -+extern int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time); -+extern void rtc_time_to_tm(unsigned long time, struct rtc_time *tm); -+ -+extern int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm); -+extern int rtc_set_time(struct class_device *class_dev, struct rtc_time *tm); -+extern int rtc_read_alarm(struct class_device *class_dev, -+ struct rtc_wkalrm *alrm); -+extern int rtc_set_alarm(struct class_device *class_dev, -+ struct rtc_wkalrm *alrm); -+extern void rtc_update_irq(struct class_device *class_dev, -+ unsigned long num, unsigned long events); -+ -+extern struct class_device *rtc_open(char *name); -+extern void rtc_close(struct class_device *class_dev); -+extern int rtc_irq_register(struct class_device *class_dev, -+ struct rtc_task *task); -+extern void rtc_irq_unregister(struct class_device *class_dev, -+ struct rtc_task *task); -+extern int rtc_irq_set_state(struct class_device *class_dev, -+ struct rtc_task *task, int enabled); -+extern int rtc_irq_set_freq(struct class_device *class_dev, -+ struct rtc_task *task, int freq); -+ - typedef struct rtc_task { - void (*func)(void *private_data); - void *private_data; ---- linux-nslu2.orig/drivers/Kconfig 2006-01-20 12:04:18.000000000 +0100 -+++ linux-nslu2/drivers/Kconfig 2006-01-20 20:23:24.000000000 +0100 -@@ -66,4 +66,6 @@ source "drivers/infiniband/Kconfig" - - source "drivers/sn/Kconfig" - -+source "drivers/rtc/Kconfig" -+ - endmenu ---- linux-nslu2.orig/drivers/Makefile 2006-01-20 12:04:18.000000000 +0100 -+++ linux-nslu2/drivers/Makefile 2006-01-20 20:23:24.000000000 +0100 -@@ -54,6 +54,7 @@ obj-$(CONFIG_USB_GADGET) += usb/gadget/ - obj-$(CONFIG_GAMEPORT) += input/gameport/ - obj-$(CONFIG_INPUT) += input/ - obj-$(CONFIG_I2O) += message/ -+obj-y += rtc/ - obj-$(CONFIG_I2C) += i2c/ - obj-$(CONFIG_W1) += w1/ - obj-$(CONFIG_HWMON) += hwmon/ ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/class.c 2006-01-20 20:23:24.000000000 +0100 -@@ -0,0 +1,143 @@ -+/* -+ * RTC subsystem, base class -+ * -+ * Copyright (C) 2005 Tower Technologies -+ * Author: Alessandro Zummo <a.zummo@towertech.it> -+ * -+ * class skeleton from drivers/hwmon/hwmon.c -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; version 2 of the License. -+*/ -+ -+#include <linux/module.h> -+#include <linux/rtc.h> -+#include <linux/kdev_t.h> -+#include <linux/idr.h> -+ -+static DEFINE_IDR(rtc_idr); -+static DECLARE_MUTEX(idr_lock); -+struct class *rtc_class; -+ -+static void rtc_device_release(struct class_device *class_dev) -+{ -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ down(&idr_lock); -+ idr_remove(&rtc_idr, rtc->id); -+ up(&idr_lock); -+ kfree(rtc); -+} -+ -+/** -+ * rtc_device_register - register w/ RTC class -+ * @dev: the device to register -+ * -+ * rtc_device_unregister() must be called when the class device is no -+ * longer needed. -+ * -+ * Returns the pointer to the new struct class device. -+ */ -+struct rtc_device *rtc_device_register(char *name, struct device *dev, -+ struct rtc_class_ops *ops, -+ struct module *owner) -+{ -+ struct rtc_device *rtc; -+ int id, err; -+ -+ if (idr_pre_get(&rtc_idr, GFP_KERNEL) == 0) { -+ err = -ENOMEM; -+ goto exit; -+ } -+ -+ -+ down(&idr_lock); -+ err = idr_get_new(&rtc_idr, NULL, &id); -+ up(&idr_lock); -+ -+ if (err < 0) -+ goto exit; -+ -+ id = id & MAX_ID_MASK; -+ -+ if ((rtc = kzalloc(sizeof(struct rtc_device), GFP_KERNEL)) == NULL) { -+ err = -ENOMEM; -+ goto exit_idr; -+ } -+ -+ rtc->id = id; -+ rtc->ops = ops; -+ rtc->owner = owner; -+ rtc->class_dev.dev = dev; -+ rtc->class_dev.class = rtc_class; -+ rtc->class_dev.release = rtc_device_release; -+ -+ init_MUTEX(&rtc->ops_lock); -+ spin_lock_init(&rtc->irq_lock); -+ spin_lock_init(&rtc->irq_task_lock); -+ -+ strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE); -+ snprintf(rtc->class_dev.class_id, BUS_ID_SIZE, "rtc%d", id); -+ -+ if ((err = class_device_register(&rtc->class_dev))) -+ goto exit_kfree; -+ -+ dev_info(dev, "rtc core: registered %s as %s\n", -+ rtc->name, rtc->class_dev.class_id); -+ -+ return rtc; -+ -+exit_kfree: -+ kfree(rtc); -+ -+exit_idr: -+ idr_remove(&rtc_idr, id); -+ -+exit: -+ return ERR_PTR(err); -+} -+EXPORT_SYMBOL_GPL(rtc_device_register); -+ -+ -+/** -+ * rtc_device_unregister - removes the previously registered RTC class device -+ * -+ * @rtc: the RTC class device to destroy -+ */ -+void rtc_device_unregister(struct rtc_device *rtc) -+{ -+ down(&rtc->ops_lock); -+ rtc->ops = NULL; -+ up(&rtc->ops_lock); -+ class_device_unregister(&rtc->class_dev); -+} -+EXPORT_SYMBOL_GPL(rtc_device_unregister); -+ -+int rtc_interface_register(struct class_interface *intf) -+{ -+ intf->class = rtc_class; -+ return class_interface_register(intf); -+} -+EXPORT_SYMBOL_GPL(rtc_interface_register); -+ -+static int __init rtc_init(void) -+{ -+ rtc_class = class_create(THIS_MODULE, "rtc"); -+ if (IS_ERR(rtc_class)) { -+ printk(KERN_ERR "%s: couldn't create class\n", __FILE__); -+ return PTR_ERR(rtc_class); -+ } -+ return 0; -+} -+ -+static void __exit rtc_exit(void) -+{ -+ class_destroy(rtc_class); -+} -+ -+module_init(rtc_init); -+module_exit(rtc_exit); -+ -+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towerteh.it>"); -+MODULE_DESCRIPTION("RTC class support"); -+MODULE_LICENSE("GPL"); ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/Kconfig 2006-01-20 21:26:12.000000000 +0100 -@@ -0,0 +1,121 @@ -+# -+# RTC class/drivers configuration -+# -+ -+menu "Real Time Clock" -+ -+config RTC_CLASS -+ tristate "RTC class" -+ depends on EXPERIMENTAL -+ default y -+ help -+ Generic RTC class support. If you say yes here, you will -+ be allowed to plug one or more RTCs to your system. You will -+ probably want to enable one of more of the interfaces below. -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-class. -+ -+config RTC_HCTOSYS -+ bool "Set system time from RTC on startup" -+ depends on RTC_CLASS = y -+ default y -+ help -+ If you say yes here, the system time will be set using -+ the value read from the specified RTC device. This is useful -+ in order to avoid unnecessary fschk runs. -+ -+config RTC_HCTOSYS_DEVICE -+ string "The RTC to read the time from" -+ depends on RTC_HCTOSYS = y -+ default "rtc0" -+ help -+ The RTC device that will be used as the source for -+ the system time, usually rtc0. -+ -+comment "RTC interfaces" -+ depends on RTC_CLASS -+ -+config RTC_INTF_SYSFS -+ tristate "sysfs" -+ depends on RTC_CLASS && SYSFS -+ default RTC_CLASS -+ help -+ Say yes here if you want to use your RTC using the sysfs -+ interface, /sys/class/rtc/rtcX . -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-sysfs. -+ -+config RTC_INTF_PROC -+ tristate "proc" -+ depends on RTC_CLASS && PROC_FS -+ default RTC_CLASS -+ help -+ Say yes here if you want to use your RTC using the proc -+ interface, /proc/driver/rtc . -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-proc. -+ -+config RTC_INTF_DEV -+ tristate "dev" -+ depends on RTC_CLASS -+ default RTC_CLASS -+ help -+ Say yes here if you want to use your RTC using the dev -+ interface, /dev/rtc . -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-dev. -+ -+comment "RTC drivers" -+ depends on RTC_CLASS -+ -+config RTC_DRV_X1205 -+ tristate "Xicor/Intersil X1205 RTC chip" -+ depends on RTC_CLASS && I2C -+ help -+ If you say yes here you get support for the -+ Xicor/Intersil X1205 RTC chip. -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-x1205. -+ -+config RTC_DRV_DS1672 -+ tristate "Dallas/Maxim DS1672" -+ depends on RTC_CLASS && I2C -+ help -+ If you say yes here you get support for the -+ Dallas/Maxim DS1672 timekeeping chip. -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-ds1672. -+ -+config RTC_DRV_PCF8563 -+ tristate "Philips PCF8563/Epson RTC8564" -+ depends on RTC_CLASS && I2C -+ help -+ If you say yes here you get support for the -+ Philips PCF8563 RTC chip. The Epson RTC8564 -+ should work as well. -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-pcf8563. -+ -+config RTC_DRV_TEST -+ tristate "Test driver/device" -+ depends on RTC_CLASS -+ help -+ If you say yes here you get support for the -+ RTC test driver. It's a software RTC which can be -+ used to test the RTC subsystem APIs. It gets -+ the time from the system clock. -+ You want this driver only if you are doing development -+ on the RTC subsystem. Please read the source code -+ for further details. -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-test. -+ -+endmenu ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/Makefile 2006-01-20 21:26:12.000000000 +0100 -@@ -0,0 +1,17 @@ -+# -+# Makefile for RTC class/drivers. -+# -+ -+obj-y += utils.o -+obj-$(CONFIG_RTC_HCTOSYS) += hctosys.o -+obj-$(CONFIG_RTC_CLASS) += rtc-core.o -+rtc-core-y := class.o interface.o -+obj-$(CONFIG_RTC_INTF_SYSFS) += rtc-sysfs.o -+obj-$(CONFIG_RTC_INTF_PROC) += rtc-proc.o -+obj-$(CONFIG_RTC_INTF_DEV) += rtc-dev.o -+ -+obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o -+obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o -+obj-$(CONFIG_RTC_DRV_DS1672) += rtc-ds1672.o -+obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o -+ ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/interface.c 2006-01-20 21:26:14.000000000 +0100 -@@ -0,0 +1,232 @@ -+/* -+ * RTC subsystem, interface functions -+ * -+ * Copyright (C) 2005 Tower Technologies -+ * Author: Alessandro Zummo <a.zummo@towertech.it> -+ * -+ * based on arch/arm/common/rtctime.c -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; version 2 of the License. -+*/ -+ -+#include <linux/rtc.h> -+ -+extern struct class *rtc_class; -+ -+int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm) -+{ -+ int err; -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ if ((err = down_interruptible(&rtc->ops_lock))) -+ return err; -+ -+ if (!rtc->ops) -+ err = -ENODEV; -+ else if (!rtc->ops->read_time) -+ err = -EINVAL; -+ else { -+ memset(tm, 0, sizeof(struct rtc_time)); -+ err = rtc->ops->read_time(class_dev->dev, tm); -+ } -+ -+ up(&rtc->ops_lock); -+ return err; -+} -+EXPORT_SYMBOL(rtc_read_time); -+ -+int rtc_set_time(struct class_device *class_dev, struct rtc_time *tm) -+{ -+ int err; -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ if ((err = rtc_valid_tm(tm)) != 0) -+ return err; -+ -+ if ((err = down_interruptible(&rtc->ops_lock))) -+ return err; -+ -+ if (!rtc->ops) -+ err = -ENODEV; -+ else if (!rtc->ops->set_time) -+ err = -EINVAL; -+ else -+ err = rtc->ops->set_time(class_dev->dev, tm); -+ -+ up(&rtc->ops_lock); -+ return err; -+} -+EXPORT_SYMBOL(rtc_set_time); -+ -+int rtc_read_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm) -+{ -+ int err; -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ if ((err = down_interruptible(&rtc->ops_lock))) -+ return err; -+ -+ if (rtc->ops == NULL) -+ err = -ENODEV; -+ else if (!rtc->ops->read_alarm) -+ err = -EINVAL; -+ else { -+ memset(alarm, 0, sizeof(struct rtc_wkalrm)); -+ err = rtc->ops->read_alarm(class_dev->dev, alarm); -+ } -+ -+ up(&rtc->ops_lock); -+ return err; -+} -+EXPORT_SYMBOL(rtc_read_alarm); -+ -+int rtc_set_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm) -+{ -+ int err; -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ if ((err = down_interruptible(&rtc->ops_lock))) -+ return err; -+ -+ if (!rtc->ops) -+ err = -ENODEV; -+ else if (!rtc->ops->set_alarm) -+ err = -EINVAL; -+ else -+ err = rtc->ops->set_alarm(class_dev->dev, alarm); -+ -+ up(&rtc->ops_lock); -+ return err; -+} -+EXPORT_SYMBOL(rtc_set_alarm); -+ -+void rtc_update_irq(struct class_device *class_dev, -+ unsigned long num, unsigned long events) -+{ -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ spin_lock(&rtc->irq_lock); -+ rtc->irq_data = (rtc->irq_data + (num << 8)) | events; -+ spin_unlock(&rtc->irq_lock); -+ -+ spin_lock(&rtc->irq_task_lock); -+ if (rtc->irq_task) -+ rtc->irq_task->func(rtc->irq_task->private_data); -+ spin_unlock(&rtc->irq_task_lock); -+ -+ wake_up_interruptible(&rtc->irq_queue); -+ kill_fasync(&rtc->async_queue, SIGIO, POLL_IN); -+} -+EXPORT_SYMBOL(rtc_update_irq); -+ -+struct class_device *rtc_open(char *name) -+{ -+ struct class_device *class_dev = NULL, -+ *class_dev_tmp; -+ -+ down(&rtc_class->sem); -+ list_for_each_entry(class_dev_tmp, &rtc_class->children, node) { -+ if (strncmp(class_dev_tmp->class_id, name, BUS_ID_SIZE) == 0) { -+ class_dev = class_dev_tmp; -+ break; -+ } -+ } -+ -+ if (class_dev) { -+ if (!try_module_get(to_rtc_device(class_dev)->owner)) -+ class_dev = NULL; -+ } -+ up(&rtc_class->sem); -+ -+ return class_dev; -+} -+EXPORT_SYMBOL(rtc_open); -+ -+void rtc_close(struct class_device *class_dev) -+{ -+ module_put(to_rtc_device(class_dev)->owner); -+} -+EXPORT_SYMBOL(rtc_close); -+ -+int rtc_irq_register(struct class_device *class_dev, struct rtc_task *task) -+{ -+ int retval = -EBUSY; -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ if (task == NULL || task->func == NULL) -+ return -EINVAL; -+ -+ spin_lock(&rtc->irq_task_lock); -+ if (rtc->irq_task == NULL) { -+ rtc->irq_task = task; -+ retval = 0; -+ } -+ spin_unlock(&rtc->irq_task_lock); -+ -+ return retval; -+} -+EXPORT_SYMBOL(rtc_irq_register); -+ -+void rtc_irq_unregister(struct class_device *class_dev, struct rtc_task *task) -+{ -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ spin_lock(&rtc->irq_task_lock); -+ if (rtc->irq_task == task) -+ rtc->irq_task = NULL; -+ spin_unlock(&rtc->irq_task_lock); -+} -+EXPORT_SYMBOL(rtc_irq_unregister); -+ -+int rtc_irq_set_state(struct class_device *class_dev, struct rtc_task *task, int enabled) -+{ -+ int err = 0; -+ unsigned long flags; -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ spin_lock_irqsave(&rtc->irq_task_lock, flags); -+ if (rtc->irq_task != task) -+ err = -ENXIO; -+ spin_unlock_irqrestore(&rtc->irq_task_lock, flags); -+ -+ if (err == 0) -+ err = rtc->ops->irq_set_state(class_dev->dev, enabled); -+ -+ return err; -+} -+EXPORT_SYMBOL(rtc_irq_set_state); -+ -+int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int freq) -+{ -+ int err = 0, tmp = 0; -+ unsigned long flags; -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ /* allowed range is 2-8192 */ -+ if (freq < 2 || freq > 8192) -+ return -EINVAL; -+ -+/* if ((freq > rtc_max_user_freq) && (!capable(CAP_SYS_RESOURCE))) -+ return -EACCES; -+*/ -+ /* check if freq is a power of 2 */ -+ while (freq > (1 << tmp)) -+ tmp++; -+ -+ if (freq != (1 << tmp)) -+ return -EINVAL; -+ -+ spin_lock_irqsave(&rtc->irq_task_lock, flags); -+ if (rtc->irq_task != task) -+ err = -ENXIO; -+ spin_unlock_irqrestore(&rtc->irq_task_lock, flags); -+ -+ if (err == 0) { -+ if ((err = rtc->ops->irq_set_freq(class_dev->dev, freq)) == 0) -+ rtc->irq_freq = freq; -+ } -+ return err; -+ -+} ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/utils.c 2006-01-20 20:23:24.000000000 +0100 -@@ -0,0 +1,97 @@ -+/* -+ * RTC subsystem, utility functions -+ * -+ * Copyright (C) 2005 Tower Technologies -+ * Author: Alessandro Zummo <a.zummo@towertech.it> -+ * -+ * based on arch/arm/common/rtctime.c -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; version 2 of the License. -+*/ -+ -+#include <linux/rtc.h> -+ -+static const unsigned char rtc_days_in_month[] = { -+ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 -+}; -+ -+#define LEAPS_THRU_END_OF(y) ((y)/4 - (y)/100 + (y)/400) -+#define LEAP_YEAR(year) ((!(year % 4) && (year % 100)) || !(year % 400)) -+ -+int rtc_month_days(unsigned int month, unsigned int year) -+{ -+ return rtc_days_in_month[month] + (LEAP_YEAR(year) && month == 1); -+} -+EXPORT_SYMBOL(rtc_month_days); -+ -+/* -+ * Convert seconds since 01-01-1970 00:00:00 to Gregorian date. -+ */ -+void rtc_time_to_tm(unsigned long time, struct rtc_time *tm) -+{ -+ int days, month, year; -+ -+ days = time / 86400; -+ time -= days * 86400; -+ -+ tm->tm_wday = (days + 4) % 7; -+ -+ year = 1970 + days / 365; -+ days -= (year - 1970) * 365 -+ + LEAPS_THRU_END_OF(year - 1) -+ - LEAPS_THRU_END_OF(1970 - 1); -+ if (days < 0) { -+ year -= 1; -+ days += 365 + LEAP_YEAR(year); -+ } -+ tm->tm_year = year - 1900; -+ tm->tm_yday = days + 1; -+ -+ for (month = 0; month < 11; month++) { -+ int newdays; -+ -+ newdays = days - rtc_month_days(month, year); -+ if (newdays < 0) -+ break; -+ days = newdays; -+ } -+ tm->tm_mon = month; -+ tm->tm_mday = days + 1; -+ -+ tm->tm_hour = time / 3600; -+ time -= tm->tm_hour * 3600; -+ tm->tm_min = time / 60; -+ tm->tm_sec = time - tm->tm_min * 60; -+} -+EXPORT_SYMBOL(rtc_time_to_tm); -+ -+/* -+ * Does the rtc_time represent a valid date/time? -+ */ -+int rtc_valid_tm(struct rtc_time *tm) -+{ -+ if (tm->tm_year < 70 || -+ tm->tm_mon >= 12 || -+ tm->tm_mday < 1 || -+ tm->tm_mday > rtc_month_days(tm->tm_mon, tm->tm_year + 1900) || -+ tm->tm_hour >= 24 || -+ tm->tm_min >= 60 || -+ tm->tm_sec >= 60) -+ return -EINVAL; -+ -+ return 0; -+} -+EXPORT_SYMBOL(rtc_valid_tm); -+ -+/* -+ * Convert Gregorian date to seconds since 01-01-1970 00:00:00. -+ */ -+int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time) -+{ -+ *time = mktime(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, -+ tm->tm_hour, tm->tm_min, tm->tm_sec); -+ return 0; -+} -+EXPORT_SYMBOL(rtc_tm_to_time); ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/hctosys.c 2006-01-20 20:23:24.000000000 +0100 -@@ -0,0 +1,61 @@ -+/* -+ * RTC subsystem, initialize system time on startup -+ * -+ * Copyright (C) 2005 Tower Technologies -+ * Author: Alessandro Zummo <a.zummo@towertech.it> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; version 2 of the License. -+*/ -+ -+#include <linux/rtc.h> -+ -+/* IMPORTANT: the RTC only stores whole seconds. It is arbitrary -+ * whether it stores the most close value or the value with partial -+ * seconds truncated. However, it is important that we use it to store -+ * the truncated value. This is because otherwise it is necessary, -+ * in an rtc sync function, to read both xtime.tv_sec and -+ * xtime.tv_nsec. On some processors (i.e. ARM), an atomic read -+ * of >32bits is not possible. So storing the most close value would -+ * slow down the sync API. So here we have the truncated value and -+ * the best guess is to add 0.5s. -+ */ -+ -+static int __init rtc_hctosys(void) -+{ -+ int err; -+ struct class_device *class_dev = rtc_open(CONFIG_RTC_HCTOSYS_DEVICE); -+ -+ if (class_dev) { -+ struct rtc_time tm; -+ -+ if ((err = rtc_read_time(class_dev, &tm)) == 0) { -+ struct timespec tv; -+ -+ tv.tv_nsec = NSEC_PER_SEC >> 1; -+ -+ rtc_tm_to_time(&tm, &tv.tv_sec); -+ -+ do_settimeofday(&tv); -+ -+ dev_info(class_dev->dev, -+ "setting the system clock to " -+ "%d-%02d-%02d %02d:%02d:%02d (%d)\n", -+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, -+ tm.tm_hour, tm.tm_min, tm.tm_sec, tv.tv_sec); -+ } -+ else -+ dev_err(class_dev->dev, -+ "unable to set the system clock\n"); -+ -+ rtc_close(class_dev); -+ } -+ else -+ printk("%s: unable to open rtc device (%s)\n", -+ __FILE__, CONFIG_RTC_HCTOSYS_DEVICE); -+ -+ return 0; -+} -+ -+late_initcall(rtc_hctosys); ---- linux-nslu2.orig/arch/arm/Kconfig 2006-01-20 21:25:46.000000000 +0100 -+++ linux-nslu2/arch/arm/Kconfig 2006-01-20 21:26:12.000000000 +0100 -@@ -748,6 +748,8 @@ source "drivers/usb/Kconfig" - - source "drivers/mmc/Kconfig" - -+source "drivers/rtc/Kconfig" -+ - endmenu - - source "fs/Kconfig" ---- linux-nslu2.orig/arch/arm/common/rtctime.c 2006-01-20 21:25:46.000000000 +0100 -+++ linux-nslu2/arch/arm/common/rtctime.c 2006-01-20 21:26:12.000000000 +0100 -@@ -40,89 +40,6 @@ static struct rtc_ops *rtc_ops; - - #define rtc_epoch 1900UL - --static const unsigned char days_in_month[] = { -- 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 --}; -- --#define LEAPS_THRU_END_OF(y) ((y)/4 - (y)/100 + (y)/400) --#define LEAP_YEAR(year) ((!(year % 4) && (year % 100)) || !(year % 400)) -- --static int month_days(unsigned int month, unsigned int year) --{ -- return days_in_month[month] + (LEAP_YEAR(year) && month == 1); --} -- --/* -- * Convert seconds since 01-01-1970 00:00:00 to Gregorian date. -- */ --void rtc_time_to_tm(unsigned long time, struct rtc_time *tm) --{ -- int days, month, year; -- -- days = time / 86400; -- time -= days * 86400; -- -- tm->tm_wday = (days + 4) % 7; -- -- year = 1970 + days / 365; -- days -= (year - 1970) * 365 -- + LEAPS_THRU_END_OF(year - 1) -- - LEAPS_THRU_END_OF(1970 - 1); -- if (days < 0) { -- year -= 1; -- days += 365 + LEAP_YEAR(year); -- } -- tm->tm_year = year - 1900; -- tm->tm_yday = days + 1; -- -- for (month = 0; month < 11; month++) { -- int newdays; -- -- newdays = days - month_days(month, year); -- if (newdays < 0) -- break; -- days = newdays; -- } -- tm->tm_mon = month; -- tm->tm_mday = days + 1; -- -- tm->tm_hour = time / 3600; -- time -= tm->tm_hour * 3600; -- tm->tm_min = time / 60; -- tm->tm_sec = time - tm->tm_min * 60; --} --EXPORT_SYMBOL(rtc_time_to_tm); -- --/* -- * Does the rtc_time represent a valid date/time? -- */ --int rtc_valid_tm(struct rtc_time *tm) --{ -- if (tm->tm_year < 70 || -- tm->tm_mon >= 12 || -- tm->tm_mday < 1 || -- tm->tm_mday > month_days(tm->tm_mon, tm->tm_year + 1900) || -- tm->tm_hour >= 24 || -- tm->tm_min >= 60 || -- tm->tm_sec >= 60) -- return -EINVAL; -- -- return 0; --} --EXPORT_SYMBOL(rtc_valid_tm); -- --/* -- * Convert Gregorian date to seconds since 01-01-1970 00:00:00. -- */ --int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time) --{ -- *time = mktime(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, -- tm->tm_hour, tm->tm_min, tm->tm_sec); -- -- return 0; --} --EXPORT_SYMBOL(rtc_tm_to_time); -- - /* - * Calculate the next alarm time given the requested alarm time mask - * and the current time. -@@ -141,13 +58,13 @@ void rtc_next_alarm_time(struct rtc_time - next->tm_sec = alrm->tm_sec; - } - --static inline int rtc_read_time(struct rtc_ops *ops, struct rtc_time *tm) -+static inline int rtc_arm_read_time(struct rtc_ops *ops, struct rtc_time *tm) - { - memset(tm, 0, sizeof(struct rtc_time)); - return ops->read_time(tm); - } - --static inline int rtc_set_time(struct rtc_ops *ops, struct rtc_time *tm) -+static inline int rtc_arm_set_time(struct rtc_ops *ops, struct rtc_time *tm) - { - int ret; - -@@ -158,7 +75,7 @@ static inline int rtc_set_time(struct rt - return ret; - } - --static inline int rtc_read_alarm(struct rtc_ops *ops, struct rtc_wkalrm *alrm) -+static inline int rtc_arm_read_alarm(struct rtc_ops *ops, struct rtc_wkalrm *alrm) - { - int ret = -EINVAL; - if (ops->read_alarm) { -@@ -168,7 +85,7 @@ static inline int rtc_read_alarm(struct - return ret; - } - --static inline int rtc_set_alarm(struct rtc_ops *ops, struct rtc_wkalrm *alrm) -+static inline int rtc_arm_set_alarm(struct rtc_ops *ops, struct rtc_wkalrm *alrm) - { - int ret = -EINVAL; - if (ops->set_alarm) -@@ -256,7 +173,7 @@ static int rtc_ioctl(struct inode *inode - - switch (cmd) { - case RTC_ALM_READ: -- ret = rtc_read_alarm(ops, &alrm); -+ ret = rtc_arm_read_alarm(ops, &alrm); - if (ret) - break; - ret = copy_to_user(uarg, &alrm.time, sizeof(tm)); -@@ -278,11 +195,11 @@ static int rtc_ioctl(struct inode *inode - alrm.time.tm_wday = -1; - alrm.time.tm_yday = -1; - alrm.time.tm_isdst = -1; -- ret = rtc_set_alarm(ops, &alrm); -+ ret = rtc_arm_set_alarm(ops, &alrm); - break; - - case RTC_RD_TIME: -- ret = rtc_read_time(ops, &tm); -+ ret = rtc_arm_read_time(ops, &tm); - if (ret) - break; - ret = copy_to_user(uarg, &tm, sizeof(tm)); -@@ -300,7 +217,7 @@ static int rtc_ioctl(struct inode *inode - ret = -EFAULT; - break; - } -- ret = rtc_set_time(ops, &tm); -+ ret = rtc_arm_set_time(ops, &tm); - break; - - case RTC_EPOCH_SET: -@@ -331,11 +248,11 @@ static int rtc_ioctl(struct inode *inode - ret = -EFAULT; - break; - } -- ret = rtc_set_alarm(ops, &alrm); -+ ret = rtc_arm_set_alarm(ops, &alrm); - break; - - case RTC_WKALM_RD: -- ret = rtc_read_alarm(ops, &alrm); -+ ret = rtc_arm_read_alarm(ops, &alrm); - if (ret) - break; - ret = copy_to_user(uarg, &alrm, sizeof(alrm)); -@@ -351,7 +268,7 @@ static int rtc_ioctl(struct inode *inode - return ret; - } - --static int rtc_open(struct inode *inode, struct file *file) -+static int rtc_arm_open(struct inode *inode, struct file *file) - { - int ret; - -@@ -406,7 +323,7 @@ static struct file_operations rtc_fops = - .read = rtc_read, - .poll = rtc_poll, - .ioctl = rtc_ioctl, -- .open = rtc_open, -+ .open = rtc_arm_open, - .release = rtc_release, - .fasync = rtc_fasync, - }; -@@ -425,7 +342,7 @@ static int rtc_read_proc(char *page, cha - struct rtc_time tm; - char *p = page; - -- if (rtc_read_time(ops, &tm) == 0) { -+ if (rtc_arm_read_time(ops, &tm) == 0) { - p += sprintf(p, - "rtc_time\t: %02d:%02d:%02d\n" - "rtc_date\t: %04d-%02d-%02d\n" -@@ -435,7 +352,7 @@ static int rtc_read_proc(char *page, cha - rtc_epoch); - } - -- if (rtc_read_alarm(ops, &alrm) == 0) { -+ if (rtc_arm_read_alarm(ops, &alrm) == 0) { - p += sprintf(p, "alrm_time\t: "); - if ((unsigned int)alrm.time.tm_hour <= 24) - p += sprintf(p, "%02d:", alrm.time.tm_hour); ---- linux-nslu2.orig/include/asm-arm/rtc.h 2006-01-20 21:25:46.000000000 +0100 -+++ linux-nslu2/include/asm-arm/rtc.h 2006-01-20 21:26:12.000000000 +0100 -@@ -25,9 +25,6 @@ struct rtc_ops { - int (*proc)(char *buf); - }; - --void rtc_time_to_tm(unsigned long, struct rtc_time *); --int rtc_tm_to_time(struct rtc_time *, unsigned long *); --int rtc_valid_tm(struct rtc_time *); - void rtc_next_alarm_time(struct rtc_time *, struct rtc_time *, struct rtc_time *); - void rtc_update(unsigned long, unsigned long); - int register_rtc(struct rtc_ops *); ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/rtc-sysfs.c 2006-01-20 21:26:12.000000000 +0100 -@@ -0,0 +1,128 @@ -+/* -+ * RTC subsystem, sysfs interface -+ * -+ * Copyright (C) 2005 Tower Technologies -+ * Author: Alessandro Zummo <a.zummo@towertech.it> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; version 2 of the License. -+*/ -+ -+#include <linux/module.h> -+#include <linux/rtc.h> -+ -+/* device attributes */ -+ -+static ssize_t rtc_sysfs_show_name(struct class_device *dev, char *buf) -+{ -+ return sprintf(buf, "%s\n", to_rtc_device(dev)->name); -+} -+static CLASS_DEVICE_ATTR(name, S_IRUGO, rtc_sysfs_show_name, NULL); -+ -+static ssize_t rtc_sysfs_show_date(struct class_device *dev, char *buf) -+{ -+ ssize_t retval = -ENODEV; -+ struct rtc_device *rtc = to_rtc_device(dev); -+ struct rtc_time tm; -+ -+ if ((retval = down_interruptible(&rtc->ops_lock))) -+ return retval; -+ -+ if (rtc->ops && ((retval = rtc_read_time(dev, &tm)) == 0)) { -+ retval = sprintf(buf, "%04d-%02d-%02d\n", -+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); -+ } -+ -+ up(&rtc->ops_lock); -+ -+ return retval; -+} -+static CLASS_DEVICE_ATTR(date, S_IRUGO, rtc_sysfs_show_date, NULL); -+ -+static ssize_t rtc_sysfs_show_time(struct class_device *dev, char *buf) -+{ -+ ssize_t retval = -ENODEV; -+ struct rtc_device *rtc = to_rtc_device(dev); -+ struct rtc_time tm; -+ -+ if ((retval = down_interruptible(&rtc->ops_lock))) -+ return retval; -+ -+ if (rtc->ops && ((retval = rtc_read_time(dev, &tm)) == 0)) { -+ retval = sprintf(buf, "%02d:%02d:%02d\n", -+ tm.tm_hour, tm.tm_min, tm.tm_sec); -+ } -+ -+ up(&rtc->ops_lock); -+ -+ return retval; -+} -+static CLASS_DEVICE_ATTR(time, S_IRUGO, rtc_sysfs_show_time, NULL); -+ -+static ssize_t rtc_sysfs_show_since_epoch(struct class_device *dev, char *buf) -+{ -+ ssize_t retval = -ENODEV; -+ struct rtc_device *rtc = to_rtc_device(dev); -+ struct rtc_time tm; -+ -+ if ((retval = down_interruptible(&rtc->ops_lock))) -+ return retval; -+ -+ if (rtc->ops && ((retval = rtc_read_time(dev, &tm)) == 0)) { -+ unsigned long time; -+ rtc_tm_to_time(&tm, &time); -+ retval = sprintf(buf, "%lu\n", time); -+ } -+ -+ up(&rtc->ops_lock); -+ -+ return retval; -+} -+static CLASS_DEVICE_ATTR(since_epoch, S_IRUGO, rtc_sysfs_show_since_epoch, NULL); -+ -+/* insertion/removal hooks */ -+ -+static int __devinit rtc_sysfs_add_device(struct class_device *class_dev, -+ struct class_interface *class_intf) -+{ -+ class_device_create_file(class_dev, &class_device_attr_name); -+ class_device_create_file(class_dev, &class_device_attr_date); -+ class_device_create_file(class_dev, &class_device_attr_time); -+ class_device_create_file(class_dev, &class_device_attr_since_epoch); -+ dev_info(class_dev->dev, "rtc intf: sysfs\n"); -+ return 0; -+} -+ -+static void rtc_sysfs_remove_device(struct class_device *class_dev, -+ struct class_interface *class_intf) -+{ -+ class_device_remove_file(class_dev, &class_device_attr_name); -+ class_device_remove_file(class_dev, &class_device_attr_date); -+ class_device_remove_file(class_dev, &class_device_attr_time); -+ class_device_remove_file(class_dev, &class_device_attr_since_epoch); -+} -+ -+/* interface registration */ -+ -+struct class_interface rtc_sysfs_interface = { -+ .add = &rtc_sysfs_add_device, -+ .remove = &rtc_sysfs_remove_device, -+}; -+ -+static int __init rtc_sysfs_init(void) -+{ -+ return rtc_interface_register(&rtc_sysfs_interface); -+} -+ -+static void __exit rtc_sysfs_exit(void) -+{ -+ class_interface_unregister(&rtc_sysfs_interface); -+} -+ -+module_init(rtc_sysfs_init); -+module_exit(rtc_sysfs_exit); -+ -+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); -+MODULE_DESCRIPTION("RTC class sysfs interface"); -+MODULE_LICENSE("GPL"); ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/rtc-proc.c 2006-01-20 21:26:12.000000000 +0100 -@@ -0,0 +1,158 @@ -+/* -+ * RTC subsystem, proc interface -+ * -+ * Copyright (C) 2005 Tower Technologies -+ * Author: Alessandro Zummo <a.zummo@towertech.it> -+ * -+ * based on arch/arm/common/rtctime.c -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; version 2 of the License. -+*/ -+ -+#include <linux/module.h> -+#include <linux/rtc.h> -+#include <linux/proc_fs.h> -+#include <linux/seq_file.h> -+ -+static struct class_device *rtc_dev = NULL; -+static DECLARE_MUTEX(rtc_sem); -+ -+static int rtc_proc_show(struct seq_file *seq, void *offset) -+{ -+ struct class_device *class_dev = seq->private; -+ struct rtc_class_ops *ops = to_rtc_device(class_dev)->ops; -+ struct rtc_wkalrm alrm; -+ struct rtc_time tm; -+ -+ if (rtc_read_time(class_dev, &tm) == 0) { -+ seq_printf(seq, -+ "rtc_time\t: %02d:%02d:%02d\n" -+ "rtc_date\t: %04d-%02d-%02d\n", -+ tm.tm_hour, tm.tm_min, tm.tm_sec, -+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); -+ } -+ -+ if (rtc_read_alarm(class_dev, &alrm) == 0) { -+ seq_printf(seq, "alrm_time\t: "); -+ if ((unsigned int)alrm.time.tm_hour <= 24) -+ seq_printf(seq, "%02d:", alrm.time.tm_hour); -+ else -+ seq_printf(seq, "**:"); -+ if ((unsigned int)alrm.time.tm_min <= 59) -+ seq_printf(seq, "%02d:", alrm.time.tm_min); -+ else -+ seq_printf(seq, "**:"); -+ if ((unsigned int)alrm.time.tm_sec <= 59) -+ seq_printf(seq, "%02d\n", alrm.time.tm_sec); -+ else -+ seq_printf(seq, "**\n"); -+ -+ seq_printf(seq, "alrm_date\t: "); -+ if ((unsigned int)alrm.time.tm_year <= 200) -+ seq_printf(seq, "%04d-", alrm.time.tm_year + 1900); -+ else -+ seq_printf(seq, "****-"); -+ if ((unsigned int)alrm.time.tm_mon <= 11) -+ seq_printf(seq, "%02d-", alrm.time.tm_mon + 1); -+ else -+ seq_printf(seq, "**-"); -+ if ((unsigned int)alrm.time.tm_mday <= 31) -+ seq_printf(seq, "%02d\n", alrm.time.tm_mday); -+ else -+ seq_printf(seq, "**\n"); -+ seq_printf(seq, "alrm_wakeup\t: %s\n", -+ alrm.enabled ? "yes" : "no"); -+ seq_printf(seq, "alrm_pending\t: %s\n", -+ alrm.pending ? "yes" : "no"); -+ } -+ -+ if (ops->proc) -+ ops->proc(class_dev->dev, seq); -+ -+ return 0; -+} -+ -+static int rtc_proc_open(struct inode *inode, struct file *file) -+{ -+ struct class_device *class_dev = PDE(inode)->data; -+ -+ if (!try_module_get(THIS_MODULE)) -+ return -ENODEV; -+ -+ return single_open(file, rtc_proc_show, class_dev); -+} -+ -+static int rtc_proc_release(struct inode *inode, struct file *file) -+{ -+ int res = single_release(inode, file); -+ module_put(THIS_MODULE); -+ return res; -+} -+ -+static struct file_operations rtc_proc_fops = { -+ .open = rtc_proc_open, -+ .read = seq_read, -+ .llseek = seq_lseek, -+ .release = rtc_proc_release, -+}; -+ -+static int rtc_proc_add_device(struct class_device *class_dev, -+ struct class_interface *class_intf) -+{ -+ down(&rtc_sem); -+ if (rtc_dev == NULL) { -+ struct proc_dir_entry *ent; -+ -+ rtc_dev = class_dev; -+ -+ if ((ent = create_proc_entry("driver/rtc", 0, NULL))) { -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ ent->proc_fops = &rtc_proc_fops; -+ ent->owner = rtc->owner; -+ ent->data = class_dev; -+ -+ dev_info(class_dev->dev, "rtc intf: proc\n"); -+ } -+ else -+ rtc_dev = NULL; -+ } -+ up(&rtc_sem); -+ -+ return 0; -+} -+ -+static void rtc_proc_remove_device(struct class_device *class_dev, -+ struct class_interface *class_intf) -+{ -+ down(&rtc_sem); -+ if (rtc_dev == class_dev) { -+ remove_proc_entry("driver/rtc", NULL); -+ rtc_dev = NULL; -+ } -+ up(&rtc_sem); -+} -+ -+struct class_interface rtc_proc_interface = { -+ .add = &rtc_proc_add_device, -+ .remove = &rtc_proc_remove_device, -+}; -+ -+static int __init rtc_proc_init(void) -+{ -+ return rtc_interface_register(&rtc_proc_interface); -+} -+ -+static void __exit rtc_proc_exit(void) -+{ -+ class_interface_unregister(&rtc_proc_interface); -+} -+ -+module_init(rtc_proc_init); -+module_exit(rtc_proc_exit); -+ -+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); -+MODULE_DESCRIPTION("RTC class proc interface"); -+MODULE_LICENSE("GPL"); ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/rtc-dev.c 2006-01-20 21:26:12.000000000 +0100 -@@ -0,0 +1,372 @@ -+/* -+ * RTC subsystem, dev interface -+ * -+ * Copyright (C) 2005 Tower Technologies -+ * Author: Alessandro Zummo <a.zummo@towertech.it> -+ * -+ * based on arch/arm/common/rtctime.c -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; version 2 of the License. -+*/ -+ -+#include <linux/module.h> -+#include <linux/rtc.h> -+ -+static dev_t rtc_devt; -+ -+#define RTC_DEV_MAX 16 /* 16 RTCs should be enough for everyone... */ -+ -+static int rtc_dev_open(struct inode *inode, struct file *file) -+{ -+ int err; -+ struct rtc_device *rtc = container_of(inode->i_cdev, -+ struct rtc_device, char_dev); -+ struct rtc_class_ops *ops = rtc->ops; -+ -+ /* We keep the lock as long as the device is in use -+ * and return immediately if busy -+ */ -+ if (down_trylock(&rtc->char_sem)) -+ return -EBUSY; -+ -+ file->private_data = &rtc->class_dev; -+ -+ err = ops->open ? ops->open(rtc->class_dev.dev) : 0; -+ if (err == 0) { -+ -+ spin_lock_irq(&rtc->irq_lock); -+ rtc->irq_data = 0; -+ spin_unlock_irq(&rtc->irq_lock); -+ -+ return 0; -+ } -+ -+ /* something has gone wrong, release the lock */ -+ up(&rtc->char_sem); -+ return err; -+} -+ -+ -+static ssize_t -+rtc_dev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) -+{ -+ struct rtc_device *rtc = to_rtc_device(file->private_data); -+ -+ DECLARE_WAITQUEUE(wait, current); -+ unsigned long data; -+ ssize_t ret; -+ -+ if (count < sizeof(unsigned long)) -+ return -EINVAL; -+ -+ add_wait_queue(&rtc->irq_queue, &wait); -+ do { -+ __set_current_state(TASK_INTERRUPTIBLE); -+ -+ spin_lock_irq(&rtc->irq_lock); -+ data = rtc->irq_data; -+ rtc->irq_data = 0; -+ spin_unlock_irq(&rtc->irq_lock); -+ -+ if (data != 0) { -+ ret = 0; -+ break; -+ } -+ if (file->f_flags & O_NONBLOCK) { -+ ret = -EAGAIN; -+ break; -+ } -+ if (signal_pending(current)) { -+ ret = -ERESTARTSYS; -+ break; -+ } -+ schedule(); -+ } while (1); -+ set_current_state(TASK_RUNNING); -+ remove_wait_queue(&rtc->irq_queue, &wait); -+ -+ if (ret == 0) { -+ ret = put_user(data, (unsigned long __user *)buf); -+ if (ret == 0) -+ ret = sizeof(unsigned long); -+ } -+ return ret; -+} -+ -+static unsigned int rtc_dev_poll(struct file *file, poll_table *wait) -+{ -+ struct rtc_device *rtc = to_rtc_device(file->private_data); -+ unsigned long data; -+ -+ poll_wait(file, &rtc->irq_queue, wait); -+ -+ spin_lock_irq(&rtc->irq_lock); -+ data = rtc->irq_data; -+ spin_unlock_irq(&rtc->irq_lock); -+ -+ return data != 0 ? POLLIN | POLLRDNORM : 0; -+} -+ -+static int rtc_dev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, -+ unsigned long arg) -+{ -+ int err = 0; -+ struct class_device *class_dev = file->private_data; -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ struct rtc_class_ops *ops = rtc->ops; -+ struct rtc_time tm; -+ struct rtc_wkalrm alarm; -+ void __user *uarg = (void __user *) arg; -+ -+ /* avoid conflicting IRQ users */ -+ if (cmd == RTC_PIE_ON || cmd == RTC_PIE_OFF || cmd == RTC_IRQP_SET) { -+ spin_lock(&rtc->irq_task_lock); -+ if (rtc->irq_task) -+ err = -EBUSY; -+ spin_unlock(&rtc->irq_task_lock); -+ -+ if (err < 0) -+ return err; -+ } -+ -+ /* try the driver's ioctl interface */ -+ if (ops->ioctl) { -+ err = ops->ioctl(class_dev->dev, cmd, arg); -+ if (err < 0 && err != -EINVAL) -+ return err; -+ } -+ -+ /* if the driver does not provide the ioctl interface -+ * or if that particular ioctl was not implemented -+ * (-EINVAL), we will try to emulate here. -+ */ -+ -+ switch (cmd) { -+ case RTC_ALM_READ: -+ if ((err = rtc_read_alarm(class_dev, &alarm)) < 0) -+ return err; -+ -+ if ((err = copy_to_user(uarg, &alarm.time, sizeof(tm)))) -+ return -EFAULT; -+ break; -+ -+ case RTC_ALM_SET: -+ if ((err = copy_from_user(&alarm.time, uarg, sizeof(tm)))) -+ return -EFAULT; -+ -+ alarm.enabled = 0; -+ alarm.pending = 0; -+ alarm.time.tm_mday = -1; -+ alarm.time.tm_mon = -1; -+ alarm.time.tm_year = -1; -+ alarm.time.tm_wday = -1; -+ alarm.time.tm_yday = -1; -+ alarm.time.tm_isdst = -1; -+ err = rtc_set_alarm(class_dev, &alarm); -+ break; -+ -+ case RTC_RD_TIME: -+ if ((err = rtc_read_time(class_dev, &tm)) < 0) -+ return err; -+ -+ if ((err = copy_to_user(uarg, &tm, sizeof(tm)))) -+ return -EFAULT; -+ break; -+ -+ case RTC_SET_TIME: -+ if (!capable(CAP_SYS_TIME)) -+ return -EACCES; -+ -+ if ((err = copy_from_user(&tm, uarg, sizeof(tm)))) -+ return -EFAULT; -+ -+ err = rtc_set_time(class_dev, &tm); -+ break; -+#if 0 -+ case RTC_EPOCH_SET: -+#ifndef rtc_epoch -+ /* -+ * There were no RTC clocks before 1900. -+ */ -+ if (arg < 1900) { -+ err = -EINVAL; -+ break; -+ } -+ if (!capable(CAP_SYS_TIME)) { -+ err = -EACCES; -+ break; -+ } -+ rtc_epoch = arg; -+ err = 0; -+#endif -+ break; -+ -+ case RTC_EPOCH_READ: -+ err = put_user(rtc_epoch, (unsigned long __user *)uarg); -+ break; -+#endif -+ case RTC_WKALM_SET: -+ if ((err = copy_from_user(&alarm, uarg, sizeof(alarm)))) -+ return -EFAULT; -+ -+ err = rtc_set_alarm(class_dev, &alarm); -+ break; -+ -+ case RTC_WKALM_RD: -+ if ((err = rtc_read_alarm(class_dev, &alarm)) < 0) -+ return err; -+ -+ if ((err = copy_to_user(uarg, &alarm, sizeof(alarm)))) -+ return -EFAULT; -+ break; -+ -+ default: -+ err = -EINVAL; -+ break; -+ } -+ -+ return err; -+} -+ -+static int rtc_dev_release(struct inode *inode, struct file *file) -+{ -+ struct rtc_device *rtc = to_rtc_device(file->private_data); -+ -+ if (rtc->ops->release) -+ rtc->ops->release(rtc->class_dev.dev); -+ -+ spin_lock_irq(&rtc->irq_lock); -+ rtc->irq_data = 0; -+ spin_unlock_irq(&rtc->irq_lock); -+ -+ up(&rtc->char_sem); -+ return 0; -+} -+ -+static int rtc_dev_fasync(int fd, struct file *file, int on) -+{ -+ struct rtc_device *rtc = to_rtc_device(file->private_data); -+ return fasync_helper(fd, file, on, &rtc->async_queue); -+} -+ -+static struct file_operations rtc_dev_fops = { -+ .owner = THIS_MODULE, -+ .llseek = no_llseek, -+ .read = rtc_dev_read, -+ .poll = rtc_dev_poll, -+ .ioctl = rtc_dev_ioctl, -+ .open = rtc_dev_open, -+ .release = rtc_dev_release, -+ .fasync = rtc_dev_fasync, -+}; -+ -+static ssize_t rtc_dev_show_dev(struct class_device *class_dev, char *buf) -+{ -+ return print_dev_t(buf, class_dev->devt); -+} -+static CLASS_DEVICE_ATTR(dev, S_IRUGO, rtc_dev_show_dev, NULL); -+ -+/* insertion/removal hooks */ -+ -+static int rtc_dev_add_device(struct class_device *class_dev, -+ struct class_interface *class_intf) -+{ -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ if (rtc->id >= RTC_DEV_MAX) { -+ dev_err(class_dev->dev, "too many RTCs\n"); -+ return -EINVAL; -+ } -+ -+ init_MUTEX(&rtc->char_sem); -+ spin_lock_init(&rtc->irq_lock); -+ init_waitqueue_head(&rtc->irq_queue); -+ -+ cdev_init(&rtc->char_dev, &rtc_dev_fops); -+ rtc->char_dev.owner = rtc->owner; -+ class_dev->devt = MKDEV(MAJOR(rtc_devt), rtc->id); -+ -+ if (cdev_add(&rtc->char_dev, class_dev->devt, 1)) { -+ cdev_del(&rtc->char_dev); -+ -+ dev_err(class_dev->dev, -+ "failed to add char device %d:%d\n", -+ MAJOR(class_dev->devt), -+ MINOR(class_dev->devt)); -+ -+ class_dev->devt = MKDEV(0, 0); -+ return -ENODEV; -+ } -+ -+ class_device_create_file(class_dev, &class_device_attr_dev); -+ -+ dev_info(class_dev->dev, "rtc intf: dev (%d:%d)\n", -+ MAJOR(class_dev->devt), -+ MINOR(class_dev->devt)); -+ -+ kobject_hotplug(&class_dev->kobj, KOBJ_ADD); -+ -+ return 0; -+} -+ -+static void rtc_dev_remove_device(struct class_device *class_dev, -+ struct class_interface *class_intf) -+{ -+ struct rtc_device *rtc = to_rtc_device(class_dev); -+ -+ class_device_remove_file(class_dev, &class_device_attr_dev); -+ -+ if (MAJOR(class_dev->devt)) { -+ dev_dbg(class_dev->dev, "removing char %d:%d\n", -+ MAJOR(class_dev->devt), -+ MINOR(class_dev->devt)); -+ cdev_del(&rtc->char_dev); -+ -+ kobject_hotplug(&class_dev->kobj, KOBJ_REMOVE); -+ -+ class_dev->devt = MKDEV(0, 0); -+ } -+} -+ -+/* interface registration */ -+ -+struct class_interface rtc_dev_interface = { -+ .add = &rtc_dev_add_device, -+ .remove = &rtc_dev_remove_device, -+}; -+ -+static int __init rtc_dev_init(void) -+{ -+ int err; -+ -+ if ((err = alloc_chrdev_region(&rtc_devt, 0, RTC_DEV_MAX, "rtc")) < 0) { -+ printk(KERN_ERR "%s: failed to allocate char dev region\n", -+ __FILE__); -+ return err; -+ } -+ -+ if ((err = rtc_interface_register(&rtc_dev_interface)) < 0) { -+ printk(KERN_ERR "%s: failed to register the interface\n", -+ __FILE__); -+ unregister_chrdev_region(rtc_devt, RTC_DEV_MAX); -+ return err; -+ } -+ -+ return 0; -+} -+ -+static void __exit rtc_dev_exit(void) -+{ -+ class_interface_unregister(&rtc_dev_interface); -+ -+ unregister_chrdev_region(rtc_devt, RTC_DEV_MAX); -+} -+ -+module_init(rtc_dev_init); -+module_exit(rtc_dev_exit); -+ -+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); -+MODULE_DESCRIPTION("RTC class dev interface"); -+MODULE_LICENSE("GPL"); ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/rtc-x1205.c 2006-01-20 21:26:12.000000000 +0100 -@@ -0,0 +1,672 @@ -+/* -+ * An i2c driver for the Xicor/Intersil X1205 RTC -+ * Copyright 2004 Karen Spearel -+ * Copyright 2005 Alessandro Zummo -+ * -+ * please send all reports to: -+ * kas11 at tampabay dot rr dot com -+ * a dot zummo at towertech dot it -+ * -+ * based on a lot of other RTC drivers. -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; either version 2 of the License, or -+ * (at your option) any later version. -+ */ -+ -+#include <linux/module.h> -+#include <linux/init.h> -+#include <linux/slab.h> -+#include <linux/err.h> -+#include <linux/i2c.h> -+#include <linux/string.h> -+#include <linux/bcd.h> -+#include <linux/rtc.h> -+#include <linux/delay.h> -+ -+#define DRV_VERSION "1.0.5" -+ -+/* Addresses to scan: none. This chip is located at -+ * 0x6f and uses a two bytes register addressing. -+ * Two bytes need to be written to read a single register, -+ * while most other chips just require one and take the second -+ * one as the data to be written. To prevent corrupting -+ * unknown chips, the user must explicitely set the probe parameter. -+ */ -+ -+static unsigned short normal_i2c[] = { I2C_CLIENT_END }; -+ -+/* Insmod parameters */ -+I2C_CLIENT_INSMOD; -+ -+/* offsets into CCR area */ -+ -+#define CCR_SEC 0 -+#define CCR_MIN 1 -+#define CCR_HOUR 2 -+#define CCR_MDAY 3 -+#define CCR_MONTH 4 -+#define CCR_YEAR 5 -+#define CCR_WDAY 6 -+#define CCR_Y2K 7 -+ -+#define X1205_REG_SR 0x3F /* status register */ -+#define X1205_REG_Y2K 0x37 -+#define X1205_REG_DW 0x36 -+#define X1205_REG_YR 0x35 -+#define X1205_REG_MO 0x34 -+#define X1205_REG_DT 0x33 -+#define X1205_REG_HR 0x32 -+#define X1205_REG_MN 0x31 -+#define X1205_REG_SC 0x30 -+#define X1205_REG_DTR 0x13 -+#define X1205_REG_ATR 0x12 -+#define X1205_REG_INT 0x11 -+#define X1205_REG_0 0x10 -+#define X1205_REG_Y2K1 0x0F -+#define X1205_REG_DWA1 0x0E -+#define X1205_REG_YRA1 0x0D -+#define X1205_REG_MOA1 0x0C -+#define X1205_REG_DTA1 0x0B -+#define X1205_REG_HRA1 0x0A -+#define X1205_REG_MNA1 0x09 -+#define X1205_REG_SCA1 0x08 -+#define X1205_REG_Y2K0 0x07 -+#define X1205_REG_DWA0 0x06 -+#define X1205_REG_YRA0 0x05 -+#define X1205_REG_MOA0 0x04 -+#define X1205_REG_DTA0 0x03 -+#define X1205_REG_HRA0 0x02 -+#define X1205_REG_MNA0 0x01 -+#define X1205_REG_SCA0 0x00 -+ -+#define X1205_CCR_BASE 0x30 /* Base address of CCR */ -+#define X1205_ALM0_BASE 0x00 /* Base address of ALARM0 */ -+ -+#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_DTR_DTR0 0x01 -+#define X1205_DTR_DTR1 0x02 -+#define X1205_DTR_DTR2 0x04 -+ -+#define X1205_HR_MIL 0x80 /* Set in ccr.hour for 24 hr mode */ -+ -+/* Prototypes */ -+static int x1205_attach(struct i2c_adapter *adapter); -+static int x1205_detach(struct i2c_client *client); -+static int x1205_probe(struct i2c_adapter *adapter, int address, int kind); -+ -+static struct i2c_driver x1205_driver = { -+ .owner = THIS_MODULE, -+ .name = "x1205", -+ .flags = I2C_DF_NOTIFY, -+ .attach_adapter = &x1205_attach, -+ .detach_client = &x1205_detach, -+}; -+ -+/* -+ * In the routines that deal directly with the x1205 hardware, we use -+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch -+ * Epoch is initialized as 2000. Time is set to UTC. -+ */ -+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]; -+ -+ struct i2c_msg msgs[] = { -+ { client->addr, 0, 2, dt_addr }, /* setup read ptr */ -+ { client->addr, I2C_M_RD, 8, buf }, /* read date */ -+ }; -+ -+ /* read date registers */ -+ if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { -+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__); -+ return -EIO; -+ } -+ -+ dev_dbg(&client->dev, -+ "%s: raw read data - sec=%02x, min=%02x, hr=%02x, " -+ "mday=%02x, mon=%02x, year=%02x, wday=%02x, y2k=%02x\n", -+ __FUNCTION__, -+ buf[0], buf[1], buf[2], buf[3], -+ buf[4], buf[5], buf[6], buf[7]); -+ -+ 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 */ -+ tm->tm_mday = BCD2BIN(buf[CCR_MDAY]); -+ tm->tm_mon = BCD2BIN(buf[CCR_MONTH]) - 1; /* mon is 0-11 */ -+ tm->tm_year = BCD2BIN(buf[CCR_YEAR]) -+ + (BCD2BIN(buf[CCR_Y2K]) * 100) - 1900; -+ tm->tm_wday = buf[CCR_WDAY]; -+ -+ dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, " -+ "mday=%d, mon=%d, year=%d, wday=%d\n", -+ __FUNCTION__, -+ 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 x1205_get_status(struct i2c_client *client, unsigned char *sr) -+{ -+ static unsigned char sr_addr[2] = { 0, X1205_REG_SR }; -+ -+ struct i2c_msg msgs[] = { -+ { client->addr, 0, 2, sr_addr }, /* setup read ptr */ -+ { client->addr, I2C_M_RD, 1, sr }, /* read status */ -+ }; -+ -+ /* read status register */ -+ if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { -+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__); -+ return -EIO; -+ } -+ -+ return 0; -+} -+ -+static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, -+ int datetoo, u8 reg_base) -+{ -+ int i, xfer; -+ unsigned char buf[8]; -+ -+ static const unsigned char wel[3] = { 0, X1205_REG_SR, -+ X1205_SR_WEL }; -+ -+ static const unsigned char rwel[3] = { 0, X1205_REG_SR, -+ X1205_SR_WEL | X1205_SR_RWEL }; -+ -+ static const unsigned char diswe[3] = { 0, X1205_REG_SR, 0 }; -+ -+ dev_dbg(&client->dev, -+ "%s: secs=%d, mins=%d, hours=%d\n", -+ __FUNCTION__, -+ tm->tm_sec, tm->tm_min, tm->tm_hour); -+ -+ buf[CCR_SEC] = BIN2BCD(tm->tm_sec); -+ buf[CCR_MIN] = BIN2BCD(tm->tm_min); -+ -+ /* set hour and 24hr bit */ -+ buf[CCR_HOUR] = BIN2BCD(tm->tm_hour) | X1205_HR_MIL; -+ -+ /* should we also set the date? */ -+ if (datetoo) { -+ dev_dbg(&client->dev, -+ "%s: mday=%d, mon=%d, year=%d, wday=%d\n", -+ __FUNCTION__, -+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); -+ -+ buf[CCR_MDAY] = BIN2BCD(tm->tm_mday); -+ -+ /* month, 1 - 12 */ -+ buf[CCR_MONTH] = BIN2BCD(tm->tm_mon + 1); -+ -+ /* year, since the rtc epoch*/ -+ buf[CCR_YEAR] = BIN2BCD(tm->tm_year % 100); -+ buf[CCR_WDAY] = tm->tm_wday & 0x07; -+ buf[CCR_Y2K] = BIN2BCD(tm->tm_year / 100); -+ } -+ -+ /* this sequence is required to unlock the chip */ -+ xfer = i2c_master_send(client, wel, 3); -+ if (xfer != 3) { -+ dev_err(&client->dev, "%s: wel - %d\n", __FUNCTION__, xfer); -+ return -EIO; -+ } -+ -+ xfer = i2c_master_send(client, rwel, 3); -+ if (xfer != 3) { -+ dev_err(&client->dev, "%s: rwel - %d\n", __FUNCTION__, xfer); -+ return -EIO; -+ } -+ -+ /* write register's data */ -+ for (i = 0; i < (datetoo ? 8 : 3); i++) { -+ unsigned char rdata[3] = { 0, reg_base + i, buf[i] }; -+ -+ xfer = i2c_master_send(client, rdata, 3); -+ if (xfer != 3) { -+ dev_err(&client->dev, -+ "%s: xfer=%d addr=%02x, data=%02x\n", -+ __FUNCTION__, -+ xfer, rdata[1], rdata[2]); -+ return -EIO; -+ } -+ }; -+ -+ /* disable further writes */ -+ xfer = i2c_master_send(client, diswe, 3); -+ if (xfer != 3) { -+ dev_err(&client->dev, "%s: diswe - %d\n", __FUNCTION__, xfer); -+ return -EIO; -+ } -+ -+ return 0; -+} -+ -+static int x1205_fix_osc(struct i2c_client *client) -+{ -+ int err; -+ struct rtc_time tm; -+ -+ tm.tm_hour = 0; -+ tm.tm_min = 0; -+ tm.tm_sec = 0; -+ -+ if ((err = x1205_set_datetime(client, &tm, 0, X1205_CCR_BASE)) < 0) -+ dev_err(&client->dev, -+ "unable to restart the clock\n"); -+ -+ return err; -+} -+ -+static int x1205_get_dtrim(struct i2c_client *client, int *trim) -+{ -+ unsigned char dtr; -+ static unsigned char dtr_addr[2] = { 0, X1205_REG_DTR }; -+ -+ struct i2c_msg msgs[] = { -+ { client->addr, 0, 2, dtr_addr }, /* setup read ptr */ -+ { client->addr, I2C_M_RD, 1, &dtr }, /* read dtr */ -+ }; -+ -+ /* read dtr register */ -+ if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { -+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__); -+ return -EIO; -+ } -+ -+ dev_dbg(&client->dev, "%s: raw dtr=%x\n", __FUNCTION__, dtr); -+ -+ *trim = 0; -+ -+ if (dtr & X1205_DTR_DTR0) -+ *trim += 20; -+ -+ if (dtr & X1205_DTR_DTR1) -+ *trim += 10; -+ -+ if (dtr & X1205_DTR_DTR2) -+ *trim = -*trim; -+ -+ return 0; -+} -+ -+static int x1205_get_atrim(struct i2c_client *client, int *trim) -+{ -+ s8 atr; -+ static unsigned char atr_addr[2] = { 0, X1205_REG_ATR }; -+ -+ struct i2c_msg msgs[] = { -+ { client->addr, 0, 2, atr_addr }, /* setup read ptr */ -+ { client->addr, I2C_M_RD, 1, &atr }, /* read atr */ -+ }; -+ -+ /* read atr register */ -+ if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { -+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__); -+ return -EIO; -+ } -+ -+ dev_dbg(&client->dev, "%s: raw atr=%x\n", __FUNCTION__, atr); -+ -+ /* atr is a two's complement value on 6 bits, -+ * perform sign extension. The formula is -+ * Catr = (atr * 0.25pF) + 11.00pF. -+ */ -+ if (atr & 0x20) -+ atr |= 0xC0; -+ -+ dev_dbg(&client->dev, "%s: raw atr=%x (%d)\n", __FUNCTION__, atr, atr); -+ -+ *trim = (atr * 250) + 11000; -+ -+ dev_dbg(&client->dev, "%s: real=%d\n", __FUNCTION__, *trim); -+ -+ return 0; -+} -+ -+struct x1205_limit -+{ -+ unsigned char reg; -+ unsigned char mask; -+ unsigned char min; -+ unsigned char max; -+}; -+ -+static int x1205_validate_client(struct i2c_client *client) -+{ -+ int i, xfer; -+ -+ /* Probe array. We will read the register at the specified -+ * address and check if the given bits are zero. -+ */ -+ static const unsigned char probe_zero_pattern[] = { -+ /* register, mask */ -+ X1205_REG_SR, 0x18, -+ X1205_REG_DTR, 0xF8, -+ X1205_REG_ATR, 0xC0, -+ X1205_REG_INT, 0x18, -+ X1205_REG_0, 0xFF, -+ }; -+ -+ static const struct x1205_limit probe_limits_pattern[] = { -+ /* register, mask, min, max */ -+ { X1205_REG_Y2K, 0xFF, 19, 20 }, -+ { X1205_REG_DW, 0xFF, 0, 6 }, -+ { X1205_REG_YR, 0xFF, 0, 99 }, -+ { X1205_REG_MO, 0xFF, 0, 12 }, -+ { X1205_REG_DT, 0xFF, 0, 31 }, -+ { X1205_REG_HR, 0x7F, 0, 23 }, -+ { X1205_REG_MN, 0xFF, 0, 59 }, -+ { X1205_REG_SC, 0xFF, 0, 59 }, -+ { X1205_REG_Y2K1, 0xFF, 19, 20 }, -+ { X1205_REG_Y2K0, 0xFF, 19, 20 }, -+ }; -+ -+ /* check that registers have bits a 0 where expected */ -+ for (i = 0; i < ARRAY_SIZE(probe_zero_pattern); i += 2) { -+ unsigned char buf; -+ -+ unsigned char addr[2] = { 0, probe_zero_pattern[i] }; -+ -+ struct i2c_msg msgs[2] = { -+ { client->addr, 0, 2, addr }, -+ { client->addr, I2C_M_RD, 1, &buf }, -+ }; -+ -+ xfer = i2c_transfer(client->adapter, msgs, 2); -+ if (xfer != 2) { -+ dev_err(&client->adapter->dev, -+ "%s: could not read register %x\n", -+ __FUNCTION__, addr[1]); -+ -+ return -EIO; -+ } -+ -+ if ((buf & probe_zero_pattern[i+1]) != 0) { -+ dev_err(&client->adapter->dev, -+ "%s: register=%02x, zero pattern=%d, value=%x\n", -+ __FUNCTION__, addr[1], i, buf); -+ -+ return -ENODEV; -+ } -+ } -+ -+ /* check limits (only registers with bcd values) */ -+ for (i = 0; i < ARRAY_SIZE(probe_limits_pattern); i++) { -+ unsigned char reg, value; -+ -+ unsigned char addr[2] = { 0, probe_limits_pattern[i].reg }; -+ -+ struct i2c_msg msgs[2] = { -+ { client->addr, 0, 2, addr }, -+ { client->addr, I2C_M_RD, 1, ® }, -+ }; -+ -+ xfer = i2c_transfer(client->adapter, msgs, 2); -+ -+ if (xfer != 2) { -+ dev_err(&client->adapter->dev, -+ "%s: could not read register %x\n", -+ __FUNCTION__, addr[1]); -+ -+ return -EIO; -+ } -+ -+ value = BCD2BIN(reg & probe_limits_pattern[i].mask); -+ -+ if (value > probe_limits_pattern[i].max || -+ value < probe_limits_pattern[i].min) { -+ dev_dbg(&client->adapter->dev, -+ "%s: register=%x, lim pattern=%d, value=%d\n", -+ __FUNCTION__, addr[1], i, value); -+ -+ return -ENODEV; -+ } -+ } -+ -+ return 0; -+} -+ -+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); -+} -+ -+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); -+} -+ -+static int x1205_rtc_read_time(struct device *dev, -+ struct rtc_time *tm) -+{ -+ return x1205_get_datetime(to_i2c_client(dev), -+ tm, X1205_CCR_BASE); -+} -+ -+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); -+} -+ -+static int x1205_rtc_set_mmss(struct device *dev, unsigned long secs) -+{ -+ int err; -+ -+ struct rtc_time new_tm, old_tm; -+ -+ if ((err = x1205_rtc_read_time(dev, &old_tm) == 0)) -+ return err; -+ -+ /* FIXME xtime.tv_nsec = old_tm.tm_sec * 10000000; */ -+ new_tm.tm_sec = secs % 60; -+ secs /= 60; -+ new_tm.tm_min = secs % 60; -+ secs /= 60; -+ new_tm.tm_hour = secs % 24; -+ -+ /* -+ * avoid writing when we're going to change the day -+ * of the month. We will retry in the next minute. -+ * This basically means that if the RTC must not drift -+ * by more than 1 minute in 11 minutes. -+ */ -+ if ((old_tm.tm_hour == 23 && old_tm.tm_min == 59) || -+ (new_tm.tm_hour == 23 && new_tm.tm_min == 59)) -+ return 1; -+ -+ return x1205_rtc_set_time(dev, &new_tm); -+} -+ -+static int x1205_rtc_proc(struct device *dev, struct seq_file *seq) -+{ -+ int err, dtrim, atrim; -+ -+ seq_printf(seq, "24hr\t\t: yes\n"); -+ -+ err = x1205_get_dtrim(to_i2c_client(dev), &dtrim); -+ if (err == 0) -+ seq_printf(seq, "digital_trim\t: %d ppm\n", dtrim); -+ -+ err = x1205_get_atrim(to_i2c_client(dev), &atrim); -+ if (err == 0) -+ seq_printf(seq, "analog_trim\t: %d.%02d pF\n", -+ atrim / 1000, atrim % 1000); -+ return 0; -+} -+ -+static struct rtc_class_ops x1205_rtc_ops = { -+ .proc = x1205_rtc_proc, -+ .read_time = x1205_rtc_read_time, -+ .set_time = x1205_rtc_set_time, -+ .read_alarm = x1205_rtc_read_alarm, -+ .set_alarm = x1205_rtc_set_alarm, -+ .set_mmss = x1205_rtc_set_mmss, -+}; -+ -+static ssize_t x1205_sysfs_show_atrim(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ int atrim; -+ -+ if (x1205_get_atrim(to_i2c_client(dev), &atrim) == 0) { -+ return sprintf(buf, "%d.%02d pF\n", -+ atrim / 1000, atrim % 1000); } -+ return 0; -+} -+static DEVICE_ATTR(atrim, S_IRUGO, x1205_sysfs_show_atrim, NULL); -+ -+static ssize_t x1205_sysfs_show_dtrim(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ int dtrim; -+ -+ if (x1205_get_dtrim(to_i2c_client(dev), &dtrim) == 0) { -+ return sprintf(buf, "%d ppm\n", dtrim); -+ } -+ return 0; -+} -+static DEVICE_ATTR(dtrim, S_IRUGO, x1205_sysfs_show_dtrim, NULL); -+ -+ -+static int x1205_attach(struct i2c_adapter *adapter) -+{ -+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); -+ -+ return i2c_probe(adapter, &addr_data, x1205_probe); -+} -+ -+static int x1205_probe(struct i2c_adapter *adapter, int address, int kind) -+{ -+ int err = 0; -+ unsigned char sr; -+ struct i2c_client *client; -+ struct rtc_device *rtc; -+ -+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); -+ -+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { -+ err = -ENODEV; -+ goto exit; -+ } -+ -+ if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) { -+ err = -ENOMEM; -+ goto exit; -+ } -+ -+ /* I2C client */ -+ client->addr = address; -+ client->driver = &x1205_driver; -+ client->adapter = adapter; -+ -+ strlcpy(client->name, x1205_driver.name, I2C_NAME_SIZE); -+ -+ /* Verify the chip is really an X1205 */ -+ if (kind < 0) { -+ if (x1205_validate_client(client) < 0) { -+ err = -ENODEV; -+ goto exit_kfree; -+ } -+ } -+ -+ /* Inform the i2c layer */ -+ if ((err = i2c_attach_client(client))) -+ goto exit_kfree; -+ -+ dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n"); -+ -+ rtc = rtc_device_register(x1205_driver.name, &client->dev, -+ &x1205_rtc_ops, THIS_MODULE); -+ -+ if (IS_ERR(rtc)) { -+ err = PTR_ERR(rtc); -+ dev_err(&client->dev, -+ "unable to register the class device\n"); -+ goto exit_detach; -+ } -+ -+ i2c_set_clientdata(client, rtc); -+ -+ /* Check for power failures and eventualy enable the osc */ -+ if ((err = x1205_get_status(client, &sr)) == 0) { -+ if (sr & X1205_SR_RTCF) { -+ dev_err(&client->dev, -+ "power failure detected, " -+ "please set the clock\n"); -+ udelay(50); -+ x1205_fix_osc(client); -+ } -+ } -+ else -+ dev_err(&client->dev, "couldn't read status\n"); -+ -+ device_create_file(&client->dev, &dev_attr_atrim); -+ device_create_file(&client->dev, &dev_attr_dtrim); -+ -+ return 0; -+ -+exit_detach: -+ i2c_detach_client(client); -+ -+exit_kfree: -+ kfree(client); -+ -+exit: -+ return err; -+} -+ -+static int x1205_detach(struct i2c_client *client) -+{ -+ int err; -+ struct rtc_device *rtc = i2c_get_clientdata(client); -+ -+ dev_dbg(&client->dev, "%s\n", __FUNCTION__); -+ -+ if (rtc) -+ rtc_device_unregister(rtc); -+ -+ if ((err = i2c_detach_client(client))) -+ return err; -+ -+ kfree(client); -+ -+ return 0; -+} -+ -+static int __init x1205_init(void) -+{ -+ return i2c_add_driver(&x1205_driver); -+} -+ -+static void __exit x1205_exit(void) -+{ -+ i2c_del_driver(&x1205_driver); -+} -+ -+MODULE_AUTHOR( -+ "Karen Spearel <kas11@tampabay.rr.com>, " -+ "Alessandro Zummo <a.zummo@towertech.it>"); -+MODULE_DESCRIPTION("Xicor/Intersil X1205 RTC driver"); -+MODULE_LICENSE("GPL"); -+MODULE_VERSION(DRV_VERSION); -+ -+module_init(x1205_init); -+module_exit(x1205_exit); ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/rtc-test.c 2006-01-20 21:26:12.000000000 +0100 -@@ -0,0 +1,206 @@ -+/* -+ * An RTC test device/driver -+ * Copyright (C) 2005 Tower Technologies -+ * Author: Alessandro Zummo <a.zummo@towertech.it> -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; either version 2 of the License, or -+ * (at your option) any later version. -+ */ -+ -+#include <linux/module.h> -+#include <linux/err.h> -+#include <linux/rtc.h> -+#include <linux/platform_device.h> -+ -+struct platform_device *test0 = NULL, *test1 = NULL; -+ -+ -+static int test_rtc_read_alarm(struct device *dev, -+ struct rtc_wkalrm *alrm) -+{ -+ return 0; -+} -+ -+static int test_rtc_set_alarm(struct device *dev, -+ struct rtc_wkalrm *alrm) -+{ -+ return 0; -+} -+ -+static int test_rtc_read_time(struct device *dev, -+ struct rtc_time *tm) -+{ -+ rtc_time_to_tm(get_seconds(), tm); -+ return 0; -+} -+ -+static int test_rtc_set_time(struct device *dev, -+ struct rtc_time *tm) -+{ -+ return 0; -+} -+ -+static int test_rtc_set_mmss(struct device *dev, unsigned long secs) -+{ -+ return 0; -+} -+ -+static int test_rtc_proc(struct device *dev, struct seq_file *seq) -+{ -+ struct platform_device *plat_dev = to_platform_device(dev); -+ -+ seq_printf(seq, "24hr\t\t: yes\n"); -+ seq_printf(seq, "test\t\t: yes\n"); -+ seq_printf(seq, "id\t\t: %d\n", plat_dev->id); -+ -+ return 0; -+} -+ -+static int test_rtc_ioctl(struct device *dev, unsigned int cmd, -+ unsigned long arg) -+{ -+ /* We do support interrupts, they're generated -+ * using the sysfs interface. -+ */ -+ switch (cmd) { -+ case RTC_PIE_ON: -+ case RTC_PIE_OFF: -+ case RTC_UIE_ON: -+ case RTC_UIE_OFF: -+ case RTC_AIE_ON: -+ case RTC_AIE_OFF: -+ return 0; -+ -+ default: -+ return -EINVAL; -+ } -+} -+ -+static struct rtc_class_ops test_rtc_ops = { -+ .proc = test_rtc_proc, -+ .read_time = test_rtc_read_time, -+ .set_time = test_rtc_set_time, -+ .read_alarm = test_rtc_read_alarm, -+ .set_alarm = test_rtc_set_alarm, -+ .set_mmss = test_rtc_set_mmss, -+ .ioctl = test_rtc_ioctl, -+}; -+ -+static ssize_t test_irq_show(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ return sprintf(buf, "%d\n", 42); -+} -+static ssize_t test_irq_store(struct device *dev, -+ struct device_attribute *attr, -+ const char *buf, size_t count) -+{ -+ int retval; -+ struct platform_device *plat_dev = to_platform_device(dev); -+ struct rtc_device *rtc = platform_get_drvdata(plat_dev); -+ -+ retval = count; -+ if (strncmp(buf, "tick", 4) == 0) -+ rtc_update_irq(&rtc->class_dev, 1, RTC_PF | RTC_IRQF); -+ else if (strncmp(buf, "alarm", 5) == 0) -+ rtc_update_irq(&rtc->class_dev, 1, RTC_AF | RTC_IRQF); -+ else if (strncmp(buf, "update", 6) == 0) -+ rtc_update_irq(&rtc->class_dev, 1, RTC_UF | RTC_IRQF); -+ else -+ retval = -EINVAL; -+ -+ return retval; -+} -+static DEVICE_ATTR(irq, S_IRUGO | S_IWUSR, test_irq_show, test_irq_store); -+ -+static int test_probe(struct platform_device *plat_dev) -+{ -+ int err; -+ struct rtc_device *rtc = rtc_device_register("test", &plat_dev->dev, -+ &test_rtc_ops, THIS_MODULE); -+ if (IS_ERR(rtc)) { -+ err = PTR_ERR(rtc); -+ dev_err(&plat_dev->dev, -+ "unable to register the class device\n"); -+ return err; -+ } -+ device_create_file(&plat_dev->dev, &dev_attr_irq); -+ -+ platform_set_drvdata(plat_dev, rtc); -+ -+ return 0; -+} -+ -+static int __devexit test_remove(struct platform_device *plat_dev) -+{ -+ struct rtc_device *rtc = platform_get_drvdata(plat_dev); -+ -+ rtc_device_unregister(rtc); -+ device_remove_file(&plat_dev->dev, &dev_attr_irq); -+ -+ return 0; -+} -+ -+static struct platform_driver test_drv = { -+ .probe = test_probe, -+ .remove = __devexit_p(test_remove), -+ .driver = { -+ .name = "rtc-test", -+ .owner = THIS_MODULE, -+ }, -+}; -+ -+static int __init test_init(void) -+{ -+ int err; -+ -+ if ((err = platform_driver_register(&test_drv))) -+ return err; -+ -+ if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) { -+ err = -ENOMEM; -+ goto exit_driver_unregister; -+ } -+ -+ if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) { -+ err = -ENOMEM; -+ goto exit_free_test0; -+ } -+ -+ if ((err = platform_device_add(test0))) -+ goto exit_free_test1; -+ -+ if ((err = platform_device_add(test1))) -+ goto exit_device_unregister; -+ -+ return 0; -+ -+exit_device_unregister: -+ platform_device_unregister(test0); -+ -+exit_free_test1: -+ platform_device_put(test1); -+ -+exit_free_test0: -+ platform_device_put(test0); -+ -+exit_driver_unregister: -+ platform_driver_unregister(&test_drv); -+ return err; -+} -+ -+static void __exit test_exit(void) -+{ -+ platform_device_unregister(test0); -+ platform_device_unregister(test1); -+ platform_driver_unregister(&test_drv); -+} -+ -+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); -+MODULE_DESCRIPTION("RTC test driver/device"); -+MODULE_LICENSE("GPL"); -+ -+module_init(test_init); -+module_exit(test_exit); ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/rtc-ds1672.c 2006-01-20 21:26:12.000000000 +0100 -@@ -0,0 +1,234 @@ -+/* -+ * An rtc/i2c driver for the Dallas DS1672 -+ * Copyright 2005 Alessandro Zummo -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; either version 2 of the License, or -+ * (at your option) any later version. -+ */ -+ -+#include <linux/module.h> -+#include <linux/i2c.h> -+#include <linux/rtc.h> -+ -+#define DRV_VERSION "0.2" -+ -+/* Addresses to scan: none. This chip cannot be detected. */ -+static unsigned short normal_i2c[] = { I2C_CLIENT_END }; -+ -+/* Insmod parameters */ -+I2C_CLIENT_INSMOD; -+ -+/* Registers */ -+ -+#define DS1672_REG_CNT_BASE 0 -+#define DS1672_REG_CONTROL 4 -+#define DS1672_REG_TRICKLE 5 -+ -+ -+/* Prototypes */ -+static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind); -+ -+/* -+ * In the routines that deal directly with the ds1672 hardware, we use -+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch -+ * Epoch is initialized as 2000. Time is set to UTC. -+ */ -+static int ds1672_get_datetime(struct i2c_client *client, struct rtc_time *tm) -+{ -+ unsigned long time; -+ unsigned char addr = DS1672_REG_CNT_BASE; -+ unsigned char buf[4]; -+ -+ struct i2c_msg msgs[] = { -+ { client->addr, 0, 1, &addr }, /* setup read ptr */ -+ { client->addr, I2C_M_RD, 4, buf }, /* read date */ -+ }; -+ -+ /* read date registers */ -+ if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { -+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__); -+ return -EIO; -+ } -+ -+ dev_dbg(&client->dev, -+ "%s: raw read data - counters=%02x,%02x,%02x,%02x\n" -+ __FUNCTION__, -+ buf[0], buf[1], buf[2], buf[3]); -+ -+ time = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; -+ -+ rtc_time_to_tm(time, tm); -+ -+ dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, " -+ "mday=%d, mon=%d, year=%d, wday=%d\n", -+ __FUNCTION__, -+ 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 ds1672_set_mmss(struct i2c_client *client, unsigned long secs) -+{ -+ int xfer; -+ unsigned char buf[5]; -+ -+ buf[0] = DS1672_REG_CNT_BASE; -+ buf[1] = secs & 0x000000FF; -+ buf[2] = (secs & 0x0000FF00) >> 8; -+ buf[3] = (secs & 0x00FF0000) >> 16; -+ buf[4] = (secs & 0xFF000000) >> 24; -+ -+ xfer = i2c_master_send(client, buf, 5); -+ if (xfer != 5) { -+ dev_err(&client->dev, "%s: send: %d\n", __FUNCTION__, xfer); -+ return -EIO; -+ } -+ -+ return 0; -+} -+ -+static int ds1672_set_datetime(struct i2c_client *client, struct rtc_time *tm) -+{ -+ unsigned long secs; -+ -+ dev_dbg(&client->dev, -+ "%s: secs=%d, mins=%d, hours=%d, ", -+ "mday=%d, mon=%d, year=%d, wday=%d\n", -+ __FUNCTION__, -+ tm->tm_sec, tm->tm_min, tm->tm_hour, -+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); -+ -+ rtc_tm_to_time(tm, &secs); -+ -+ return ds1672_set_mmss(client, secs); -+} -+ -+static int ds1672_rtc_read_time(struct device *dev, struct rtc_time *tm) -+{ -+ return ds1672_get_datetime(to_i2c_client(dev), tm); -+} -+ -+static int ds1672_rtc_set_time(struct device *dev, struct rtc_time *tm) -+{ -+ return ds1672_set_datetime(to_i2c_client(dev), tm); -+} -+ -+static int ds1672_rtc_set_mmss(struct device *dev, unsigned long secs) -+{ -+ return ds1672_set_mmss(to_i2c_client(dev), secs); -+} -+ -+static struct rtc_class_ops ds1672_rtc_ops = { -+ .read_time = ds1672_rtc_read_time, -+ .set_time = ds1672_rtc_set_time, -+ .set_mmss = ds1672_rtc_set_mmss, -+}; -+ -+static int ds1672_attach(struct i2c_adapter *adapter) -+{ -+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); -+ -+ return i2c_probe(adapter, &addr_data, ds1672_probe); -+} -+ -+static int ds1672_detach(struct i2c_client *client) -+{ -+ int err; -+ struct rtc_device *rtc = i2c_get_clientdata(client); -+ -+ dev_dbg(&client->dev, "%s\n", __FUNCTION__); -+ -+ if (rtc) -+ rtc_device_unregister(rtc); -+ -+ if ((err = i2c_detach_client(client))) -+ return err; -+ -+ kfree(client); -+ -+ return 0; -+} -+ -+static struct i2c_driver ds1672_driver = { -+ .owner = THIS_MODULE, -+ .name = "ds1672", -+ .flags = I2C_DF_NOTIFY, -+ .attach_adapter = &ds1672_attach, -+ .detach_client = &ds1672_detach, -+}; -+ -+static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind) -+{ -+ int err = 0; -+ struct i2c_client *client; -+ struct rtc_device *rtc; -+ -+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); -+ -+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { -+ err = -ENODEV; -+ goto exit; -+ } -+ -+ if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) { -+ err = -ENOMEM; -+ goto exit; -+ } -+ -+ /* I2C client */ -+ client->addr = address; -+ client->driver = &ds1672_driver; -+ client->adapter = adapter; -+ -+ strlcpy(client->name, ds1672_driver.name, I2C_NAME_SIZE); -+ -+ /* Inform the i2c layer */ -+ if ((err = i2c_attach_client(client))) -+ goto exit_kfree; -+ -+ dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n"); -+ -+ rtc = rtc_device_register(ds1672_driver.name, &client->dev, -+ &ds1672_rtc_ops, THIS_MODULE); -+ -+ if (IS_ERR(rtc)) { -+ err = PTR_ERR(rtc); -+ dev_err(&client->dev, -+ "unable to register the class device\n"); -+ goto exit_detach; -+ } -+ -+ i2c_set_clientdata(client, rtc); -+ -+ return 0; -+ -+exit_detach: -+ i2c_detach_client(client); -+ -+exit_kfree: -+ kfree(client); -+ -+exit: -+ return err; -+} -+ -+static int __init ds1672_init(void) -+{ -+ return i2c_add_driver(&ds1672_driver); -+} -+ -+static void __exit ds1672_exit(void) -+{ -+ i2c_del_driver(&ds1672_driver); -+} -+ -+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); -+MODULE_DESCRIPTION("Dallas/Maxim DS1672 timekeeper driver"); -+MODULE_LICENSE("GPL"); -+MODULE_VERSION(DRV_VERSION); -+ -+module_init(ds1672_init); -+module_exit(ds1672_exit); ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-nslu2/drivers/rtc/rtc-pcf8563.c 2006-01-20 21:27:41.000000000 +0100 -@@ -0,0 +1,384 @@ -+/* -+ * An I2C driver for the Philips PCF8563 RTC -+ * Copyright 2005-06 Tower Technologies -+ * -+ * Author: Alessandro Zummo <a.zummo@towertech.it> -+ * Maintainers: http://www.nslu2-linux.org/ -+ * -+ * based on the other drivers in this same directory. -+ * -+ * http://www.semiconductors.philips.com/acrobat/datasheets/PCF8563-04.pdf -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation; either version 2 of the License, or -+ * (at your option) any later version. -+ */ -+ -+#include <linux/module.h> -+#include <linux/i2c.h> -+#include <linux/bcd.h> -+#include <linux/rtc.h> -+ -+#define DRV_VERSION "0.4.0" -+ -+/* Addresses to scan */ -+static unsigned short normal_i2c[] = { 0x51, I2C_CLIENT_END }; -+ -+/* Module parameters */ -+I2C_CLIENT_INSMOD; -+ -+#define PCF8563_REG_ST1 0x00 /* status */ -+#define PCF8563_REG_ST2 0x01 -+ -+#define PCF8563_REG_SC 0x02 /* datetime */ -+#define PCF8563_REG_MN 0x03 -+#define PCF8563_REG_HR 0x04 -+#define PCF8563_REG_DM 0x05 -+#define PCF8563_REG_DW 0x06 -+#define PCF8563_REG_MO 0x07 -+#define PCF8563_REG_YR 0x08 -+ -+#define PCF8563_REG_AMN 0x09 /* alarm */ -+#define PCF8563_REG_AHR 0x0A -+#define PCF8563_REG_ADM 0x0B -+#define PCF8563_REG_ADW 0x0C -+ -+#define PCF8563_REG_CLKO 0x0D /* clock out */ -+#define PCF8563_REG_TMRC 0x0E /* timer control */ -+#define PCF8563_REG_TMR 0x0F /* timer */ -+ -+#define PCF8563_SC_LV 0x80 /* low voltage */ -+#define PCF8563_MO_C 0x80 /* century */ -+ -+/* Prototypes */ -+static int pcf8563_attach(struct i2c_adapter *adapter); -+static int pcf8563_detach(struct i2c_client *client); -+static int pcf8563_probe(struct i2c_adapter *adapter, int address, int kind); -+ -+static struct i2c_driver pcf8563_driver = { -+ .owner = THIS_MODULE, -+ .name = "pcf8563", -+ .flags = I2C_DF_NOTIFY, -+ .attach_adapter = &pcf8563_attach, -+ .detach_client = &pcf8563_detach, -+}; -+ -+/* -+ * In the routines that deal directly with the pcf8563 hardware, we use -+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch. -+ */ -+static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm) -+{ -+ unsigned char buf[13]; -+ unsigned char addr = PCF8563_REG_ST1; -+ -+ struct i2c_msg msgs[] = { -+ { client->addr, 0, 1, &addr }, /* setup read ptr */ -+ { client->addr, I2C_M_RD, 13, buf }, /* read status + date */ -+ }; -+ -+ /* read registers */ -+ if ((i2c_transfer(client->adapter, msgs, 2)) != 2) { -+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__); -+ return -EIO; -+ } -+ -+ if (buf[PCF8563_REG_SC] & PCF8563_SC_LV) -+ dev_info(&client->dev, -+ "low voltage detected, date/time is not reliable.\n"); -+ -+ dev_dbg(&client->dev, -+ "%s: raw data is st1=%02x, st2=%02x, sec=%02x, min=%02x, hr=%02x, " -+ "mday=%02x, wday=%02x, mon=%02x, year=%02x\n", -+ __FUNCTION__, -+ buf[0], buf[1], buf[2], buf[3], -+ buf[4], buf[5], buf[6], buf[7], -+ buf[8]); -+ -+ -+ tm->tm_sec = BCD2BIN(buf[PCF8563_REG_SC] & 0x7F); -+ tm->tm_min = BCD2BIN(buf[PCF8563_REG_MN] & 0x7F); -+ tm->tm_hour = BCD2BIN(buf[PCF8563_REG_HR] & 0x3F); /* rtc hr 0-23 */ -+ tm->tm_mday = BCD2BIN(buf[PCF8563_REG_DM] & 0x3F); -+ tm->tm_wday = buf[PCF8563_REG_DW] & 0x07; -+ tm->tm_mon = BCD2BIN(buf[PCF8563_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */ -+ tm->tm_year = BCD2BIN(buf[PCF8563_REG_YR]) -+ + (buf[PCF8563_REG_MO] & PCF8563_MO_C ? 100 : 0); -+ -+ dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, " -+ "mday=%d, mon=%d, year=%d, wday=%d\n", -+ __FUNCTION__, -+ tm->tm_sec, tm->tm_min, tm->tm_hour, -+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); -+ -+ /* the clock can give out invalid datetime, but we cannot return -+ * -EINVAL otherwise hwclock will refuse to set the time on bootup. -+ */ -+ if (rtc_valid_tm(tm) < 0) -+ dev_err(&client->dev, "retrieved date/time is not valid.\n"); -+ -+ return 0; -+} -+ -+static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm) -+{ -+ int i, err; -+ unsigned char buf[9]; -+ -+ dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, " -+ "mday=%d, mon=%d, year=%d, wday=%d\n", -+ __FUNCTION__, -+ tm->tm_sec, tm->tm_min, tm->tm_hour, -+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); -+ -+ /* hours, minutes and seconds */ -+ buf[PCF8563_REG_SC] = BIN2BCD(tm->tm_sec); -+ buf[PCF8563_REG_MN] = BIN2BCD(tm->tm_min); -+ buf[PCF8563_REG_HR] = BIN2BCD(tm->tm_hour); -+ -+ buf[PCF8563_REG_DM] = BIN2BCD(tm->tm_mday); -+ -+ /* month, 1 - 12 */ -+ buf[PCF8563_REG_MO] = BIN2BCD(tm->tm_mon + 1); -+ -+ /* year and century */ -+ buf[PCF8563_REG_YR] = BIN2BCD(tm->tm_year % 100); -+ if (tm->tm_year / 100) -+ buf[PCF8563_REG_MO] |= PCF8563_MO_C; -+ -+ buf[PCF8563_REG_DW] = tm->tm_wday & 0x07; -+ -+ /* write register's data */ -+ for (i = 0; i < 7; i++) { -+ unsigned char data[2] = { PCF8563_REG_SC + i, -+ buf[PCF8563_REG_SC + i] }; -+ -+ err = i2c_master_send(client, data, sizeof(data)); -+ if (err != sizeof(data)) { -+ dev_err(&client->dev, -+ "%s: err=%d addr=%02x, data=%02x\n", -+ __FUNCTION__, err, data[0], data[1]); -+ return -EIO; -+ } -+ }; -+ -+ return 0; -+} -+ -+struct pcf8563_limit -+{ -+ unsigned char reg; -+ unsigned char mask; -+ unsigned char min; -+ unsigned char max; -+}; -+ -+static int pcf8563_validate_client(struct i2c_client *client) -+{ -+ int i, xfer; -+ -+ static const struct pcf8563_limit probe_limits_pattern[] = { -+ /* register, mask, min, max */ -+ { PCF8563_REG_SC, 0x7F, 0, 59 }, -+ { PCF8563_REG_MN, 0x7F, 0, 59 }, -+ { PCF8563_REG_HR, 0x3F, 0, 23 }, -+ { PCF8563_REG_DM, 0x3F, 0, 31 }, -+ { PCF8563_REG_MO, 0x1F, 0, 12 }, -+ { PCF8563_REG_YR, 0xFF, 0, 99 }, -+ }; -+ -+ /* check limits (only registers with bcd values) */ -+ for (i = 0; i < ARRAY_SIZE(probe_limits_pattern); i++) { -+ unsigned char addr, buf, value; -+ -+ addr = probe_limits_pattern[i].reg; -+ -+ struct i2c_msg msgs[2] = { -+ { client->addr, 0, 2, &addr }, -+ { client->addr, I2C_M_RD, 1, &buf }, -+ }; -+ -+ xfer = i2c_transfer(client->adapter, msgs, 2); -+ -+ if (xfer != 2) { -+ dev_err(&client->adapter->dev, -+ "%s: could not read register %x\n", -+ __FUNCTION__, probe_limits_pattern[i].reg); -+ -+ return -EIO; -+ } -+ -+ value = BCD2BIN(buf & probe_limits_pattern[i].mask); -+ -+ if (value > probe_limits_pattern[i].max || -+ value < probe_limits_pattern[i].min) { -+ dev_dbg(&client->adapter->dev, -+ "%s: register=%x, lim pattern=%d, value=%d\n", -+ __FUNCTION__, probe_limits_pattern[i].reg, i, value); -+ -+ return -ENODEV; -+ } -+ } -+ -+ return 0; -+} -+ -+static int pcf8563_rtc_read_time(struct device *dev, -+ struct rtc_time *tm) -+{ -+ return pcf8563_get_datetime(to_i2c_client(dev), tm); -+} -+ -+static int pcf8563_rtc_set_time(struct device *dev, -+ struct rtc_time *tm) -+{ -+ return pcf8563_set_datetime(to_i2c_client(dev), tm); -+} -+ -+static int pcf8563_rtc_set_mmss(struct device *dev, unsigned long secs) -+{ -+ int err; -+ -+ struct rtc_time new_tm, old_tm; -+ -+ if ((err = pcf8563_rtc_read_time(dev, &old_tm) == 0)) -+ return err; -+ -+ /* FIXME xtime.tv_nsec = old_tm.tm_sec * 10000000; */ -+ new_tm.tm_sec = secs % 60; -+ secs /= 60; -+ new_tm.tm_min = secs % 60; -+ secs /= 60; -+ new_tm.tm_hour = secs % 24; -+ -+ /* -+ * avoid writing when we're going to change the day -+ * of the month. We will retry in the next minute. -+ * This basically means that if the RTC must not drift -+ * by more than 1 minute in 11 minutes. -+ */ -+ if ((old_tm.tm_hour == 23 && old_tm.tm_min == 59) || -+ (new_tm.tm_hour == 23 && new_tm.tm_min == 59)) -+ return 1; -+ -+ return pcf8563_rtc_set_time(dev, &new_tm); -+} -+ -+static int pcf8563_rtc_proc(struct device *dev, struct seq_file *seq) -+{ -+ seq_printf(seq, "24hr\t\t: yes\n"); -+ return 0; -+} -+ -+static struct rtc_class_ops pcf8563_rtc_ops = { -+ .proc = pcf8563_rtc_proc, -+ .read_time = pcf8563_rtc_read_time, -+ .set_time = pcf8563_rtc_set_time, -+ .set_mmss = pcf8563_rtc_set_mmss, -+}; -+ -+static int pcf8563_attach(struct i2c_adapter *adapter) -+{ -+ return i2c_probe(adapter, &addr_data, pcf8563_probe); -+} -+ -+static int pcf8563_probe(struct i2c_adapter *adapter, int address, int kind) -+{ -+ struct i2c_client *client; -+ struct rtc_device *rtc; -+ -+ int err = 0; -+ -+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); -+ -+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { -+ err = -ENODEV; -+ goto exit; -+ } -+ -+ if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) { -+ err = -ENOMEM; -+ goto exit; -+ } -+ -+ client->addr = address; -+ client->driver = &pcf8563_driver; -+ client->adapter = adapter; -+ -+ strlcpy(client->name, pcf8563_driver.name, I2C_NAME_SIZE); -+ -+ /* Verify the chip is really an PCF8563 */ -+ if (kind < 0) { -+ if (pcf8563_validate_client(client) < 0) { -+ err = -ENODEV; -+ goto exit_kfree; -+ } -+ } -+ -+ /* Inform the i2c layer */ -+ if ((err = i2c_attach_client(client))) -+ goto exit_kfree; -+ -+ dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n"); -+ -+ rtc = rtc_device_register(pcf8563_driver.name, &client->dev, -+ &pcf8563_rtc_ops, THIS_MODULE); -+ -+ if (IS_ERR(rtc)) { -+ err = PTR_ERR(rtc); -+ dev_err(&client->dev, -+ "unable to register the class device\n"); -+ goto exit_detach; -+ } -+ -+ i2c_set_clientdata(client, rtc); -+ -+ return 0; -+ -+exit_detach: -+ i2c_detach_client(client); -+ -+exit_kfree: -+ kfree(client); -+ -+exit: -+ return err; -+} -+ -+static int pcf8563_detach(struct i2c_client *client) -+{ -+ int err; -+ struct rtc_device *rtc = i2c_get_clientdata(client); -+ -+ dev_dbg(&client->dev, "%s\n", __FUNCTION__); -+ -+ if (rtc) -+ rtc_device_unregister(rtc); -+ -+ if ((err = i2c_detach_client(client))) -+ return err; -+ -+ kfree(client); -+ -+ return 0; -+} -+ -+static int __init pcf8563_init(void) -+{ -+ return i2c_add_driver(&pcf8563_driver); -+} -+ -+static void __exit pcf8563_exit(void) -+{ -+ i2c_del_driver(&pcf8563_driver); -+} -+ -+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); -+MODULE_DESCRIPTION("Philips PCF8563/Epson RTC8564 RTC driver"); -+MODULE_LICENSE("GPL"); -+MODULE_VERSION(DRV_VERSION); -+ -+module_init(pcf8563_init); -+module_exit(pcf8563_exit); -+ |