9 files changed, 44 insertions, 122 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 0dd24ebdf6ac..9731b3f826ab 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -8,6 +8,7 @@ mainmenu "Linux Kernel Configuration"
 config ARM
         bool
         default y
+        select RTC_LIB
         help
           The ARM series is a line of low-power-consumption RISC chip designs
           licensed by ARM Ltd and targeted at embedded applications and
@@ -53,6 +54,10 @@ config RWSEM_GENERIC_SPINLOCK
 config RWSEM_XCHGADD_ALGORITHM
         bool
 
+config GENERIC_HWEIGHT
+        bool
+        default y
+
 config GENERIC_CALIBRATE_DELAY
         bool
         default y
@@ -835,6 +840,8 @@ source "drivers/usb/Kconfig"
 
 source "drivers/mmc/Kconfig"
 
+source "drivers/rtc/Kconfig"
+
 endmenu
 
 source "fs/Kconfig"
diff --git a/arch/arm/common/rtctime.c b/arch/arm/common/rtctime.c
index e851d86c212c..35c9a64ac14c 100644
--- a/arch/arm/common/rtctime.c
+++ b/arch/arm/common/rtctime.c
@@ -20,6 +20,7 @@
 #include <linux/capability.h>
 #include <linux/device.h>
 #include <linux/mutex.h>
+#include <linux/rtc.h>
 
 #include <asm/rtc.h>
 #include <asm/semaphore.h>
@@ -42,89 +43,6 @@ 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.
@@ -151,13 +69,13 @@ void rtc_next_alarm_time(struct rtc_time *next, struct rtc_time *now, struct rtc
         }
 }
 
-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;
 
@@ -168,7 +86,7 @@ static inline int rtc_set_time(struct rtc_ops *ops, struct rtc_time *tm)
         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) {
@@ -178,7 +96,7 @@ static inline int rtc_read_alarm(struct rtc_ops *ops, struct rtc_wkalrm *alrm)
         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)
@@ -266,7 +184,7 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 
         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));
@@ -288,11 +206,11 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
                 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));
@@ -310,7 +228,7 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
                         ret = -EFAULT;
                         break;
                 }
-                ret = rtc_set_time(ops, &tm);
+                ret = rtc_arm_set_time(ops, &tm);
                 break;
 
         case RTC_EPOCH_SET:
@@ -341,11 +259,11 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
                         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));
@@ -435,7 +353,7 @@ static int rtc_read_proc(char *page, char **start, off_t off, int count, int *eo
         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"
@@ -445,7 +363,7 @@ static int rtc_read_proc(char *page, char **start, off_t off, int count, int *eo
                         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);
diff --git a/arch/arm/lib/copy_template.S b/arch/arm/lib/copy_template.S
index 838e435e4922..cab355c0c1f7 100644
--- a/arch/arm/lib/copy_template.S
+++ b/arch/arm/lib/copy_template.S
@@ -236,7 +236,7 @@
 
 
 /*
- * Abort preanble and completion macros.
+ * Abort preamble and completion macros.
  * If a fixup handler is required then those macros must surround it.
  * It is assumed that the fixup code will handle the private part of
  * the exit macro.
diff --git a/arch/arm/mach-footbridge/time.c b/arch/arm/mach-footbridge/time.c
index 2c64a0b0502e..5d02e95dede3 100644
--- a/arch/arm/mach-footbridge/time.c
+++ b/arch/arm/mach-footbridge/time.c
@@ -34,27 +34,12 @@ static int rtc_base;
 static unsigned long __init get_isa_cmos_time(void)
 {
         unsigned int year, mon, day, hour, min, sec;
-        int i;
 
         // check to see if the RTC makes sense.....
         if ((CMOS_READ(RTC_VALID) & RTC_VRT) == 0)
                 return mktime(1970, 1, 1, 0, 0, 0);
 
-        /* The Linux interpretation of the CMOS clock register contents:
-         * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
-         * RTC registers show the second which has precisely just started.
-         * Let's hope other operating systems interpret the RTC the same way.
-         */
-        /* read RTC exactly on falling edge of update flag */
-        for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */
-                if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
-                        break;
-
-        for (i = 0 ; i < 1000000 ; i++) /* must try at least 2.228 ms */
-                if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
-                        break;
-
-        do { /* Isn't this overkill ? UIP above should guarantee consistency */
+        do {
                 sec  = CMOS_READ(RTC_SECONDS);
                 min  = CMOS_READ(RTC_MINUTES);
                 hour = CMOS_READ(RTC_HOURS);
diff --git a/arch/arm/mach-integrator/time.c b/arch/arm/mach-integrator/time.c
index 3c22c16b38bf..bc07f52a6fd7 100644
--- a/arch/arm/mach-integrator/time.c
+++ b/arch/arm/mach-integrator/time.c
@@ -40,13 +40,13 @@ static int integrator_set_rtc(void)
         return 1;
 }
 
-static int rtc_read_alarm(struct rtc_wkalrm *alrm)
+static int integrator_rtc_read_alarm(struct rtc_wkalrm *alrm)
 {
         rtc_time_to_tm(readl(rtc_base + RTC_MR), &alrm->time);
         return 0;
 }
 
-static inline int rtc_set_alarm(struct rtc_wkalrm *alrm)
+static inline int integrator_rtc_set_alarm(struct rtc_wkalrm *alrm)
 {
         unsigned long time;
         int ret;
@@ -62,7 +62,7 @@ static inline int rtc_set_alarm(struct rtc_wkalrm *alrm)
         return ret;
 }
 
-static int rtc_read_time(struct rtc_time *tm)
+static int integrator_rtc_read_time(struct rtc_time *tm)
 {
         rtc_time_to_tm(readl(rtc_base + RTC_DR), tm);
         return 0;
@@ -76,7 +76,7 @@ static int rtc_read_time(struct rtc_time *tm)
  * edge of the 1Hz clock, we must write the time one second
  * in advance.
  */
-static inline int rtc_set_time(struct rtc_time *tm)
+static inline int integrator_rtc_set_time(struct rtc_time *tm)
 {
         unsigned long time;
         int ret;
@@ -90,10 +90,10 @@ static inline int rtc_set_time(struct rtc_time *tm)
 
 static struct rtc_ops rtc_ops = {
         .owner          = THIS_MODULE,
-        .read_time      = rtc_read_time,
-        .set_time       = rtc_set_time,
-        .read_alarm     = rtc_read_alarm,
-        .set_alarm      = rtc_set_alarm,
+        .read_time      = integrator_rtc_read_time,
+        .set_time       = integrator_rtc_set_time,
+        .read_alarm     = integrator_rtc_read_alarm,
+        .set_alarm      = integrator_rtc_set_alarm,
 };
 
 static irqreturn_t arm_rtc_interrupt(int irq, void *dev_id,
diff --git a/arch/arm/mach-omap1/board-netstar.c b/arch/arm/mach-omap1/board-netstar.c
index 60d5f8a3339c..7520e602d7a2 100644
--- a/arch/arm/mach-omap1/board-netstar.c
+++ b/arch/arm/mach-omap1/board-netstar.c
@@ -141,7 +141,7 @@ static int __init netstar_late_init(void)
         /* TODO: Setup front panel switch here */
 
         /* Setup panic notifier */
-        notifier_chain_register(&panic_notifier_list, &panic_block);
+        atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 
         return 0;
 }
diff --git a/arch/arm/mach-omap1/board-voiceblue.c b/arch/arm/mach-omap1/board-voiceblue.c
index bfd5fdd1a875..52e4a9d69642 100644
--- a/arch/arm/mach-omap1/board-voiceblue.c
+++ b/arch/arm/mach-omap1/board-voiceblue.c
@@ -235,7 +235,7 @@ static struct notifier_block panic_block = {
 static int __init voiceblue_setup(void)
 {
         /* Setup panic notifier */
-        notifier_chain_register(&panic_notifier_list, &panic_block);
+        atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 
         return 0;
 }
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 9b48a90aefce..5efa84749f37 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -319,6 +319,11 @@ void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
         pxaficp_device.dev.platform_data = info;
 }
 
+static struct platform_device pxartc_device = {
+        .name           = "sa1100-rtc",
+        .id             = -1,
+};
+
 static struct platform_device *devices[] __initdata = {
         &pxamci_device,
         &udc_device,
@@ -329,6 +334,7 @@ static struct platform_device *devices[] __initdata = {
         &pxaficp_device,
         &i2c_device,
         &i2s_device,
+        &pxartc_device,
 };
 
 static int __init pxa_init(void)
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index 2abdc419e984..9ea71551fc04 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -324,6 +324,11 @@ void sa11x0_set_irda_data(struct irda_platform_data *irda)
         sa11x0ir_device.dev.platform_data = irda;
 }
 
+static struct platform_device sa11x0rtc_device = {
+        .name           = "sa1100-rtc",
+        .id             = -1,
+};
+
 static struct platform_device *sa11x0_devices[] __initdata = {
         &sa11x0udc_device,
         &sa11x0uart1_device,
@@ -333,6 +338,7 @@ static struct platform_device *sa11x0_devices[] __initdata = {
         &sa11x0pcmcia_device,
         &sa11x0fb_device,
         &sa11x0mtd_device,
+        &sa11x0rtc_device,
 };
 
 static int __init sa1100_init(void)