powerpc: Merge time.c and asm/time.h.

We now use the merged time.c for both 32-bit and 64-bit compilation
with ARCH=powerpc, and for ARCH=ppc64, but not for ARCH=ppc32.
This removes setup_default_decr (folds its function into time_init)
and moves wakeup_decrementer into time.c.  This also makes an
asm-powerpc/rtc.h.

Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 18 insertions, 19 deletions

diff --git a/arch/powerpc/platforms/powermac/cpufreq.c b/arch/powerpc/platforms/powermac/cpufreq.c
index bcd9224f3f9..c47f8b69725 100644
--- a/arch/powerpc/platforms/powermac/cpufreq.c
+++ b/arch/powerpc/platforms/powermac/cpufreq.c
@@ -110,15 +110,6 @@ static inline void local_delay(unsigned long ms)
                 msleep(ms);
 }
 
-static inline void wakeup_decrementer(void)
-{
-        set_dec(tb_ticks_per_jiffy);
-        /* No currently-supported powerbook has a 601,
-         * so use get_tbl, not native
-         */
-        last_jiffy_stamp(0) = tb_last_stamp = get_tbl();
-}
-
 #ifdef DEBUG_FREQ
 static inline void debug_calc_bogomips(void)
 {
diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c
index 3ee6d8aa14c..eb9969b52f9 100644
--- a/arch/powerpc/platforms/powermac/time.c
+++ b/arch/powerpc/platforms/powermac/time.c
@@ -6,6 +6,8 @@
  *
  * Paul Mackerras       August 1996.
  * Copyright (C) 1996 Paul Mackerras.
+ * Copyright (C) 2003-2005 Benjamin Herrenschmidt.
+ *
  */
 #include <linux/config.h>
 #include <linux/errno.h>
@@ -19,7 +21,9 @@
 #include <linux/adb.h>
 #include <linux/cuda.h>
 #include <linux/pmu.h>
+#include <linux/interrupt.h>
 #include <linux/hardirq.h>
+#include <linux/rtc.h>
 
 #include <asm/sections.h>
 #include <asm/prom.h>
@@ -30,6 +34,14 @@
 #include <asm/time.h>
 #include <asm/nvram.h>
 
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...)
+#endif
+
 /* Apparently the RTC stores seconds since 1 Jan 1904 */
 #define RTC_OFFSET      2082844800
 
@@ -54,10 +66,7 @@
 /* Bits in IFR and IER */
 #define T1_INT          0x40            /* Timer 1 interrupt */
 
-extern struct timezone sys_tz;
-
-long __init
-pmac_time_init(void)
+long __init pmac_time_init(void)
 {
 #ifdef CONFIG_NVRAM
         s32 delta = 0;
@@ -210,7 +219,7 @@ via_calibrate_decr(void)
         tb_ticks_per_jiffy = (dstart - dend) / ((6 * HZ)/100);
         tb_to_us = mulhwu_scale_factor(dstart - dend, 60000);
 
-        printk(KERN_INFO "via_calibrate_decr: ticks per jiffy = %u (%u ticks)\n",
+        printk(KERN_INFO "via_calibrate_decr: ticks per jiffy = %lu (%u ticks)\n",
                tb_ticks_per_jiffy, dstart - dend);
 
         iounmap(via);
@@ -228,6 +237,7 @@ time_sleep_notify(struct pmu_sleep_notifier *self, int when)
         static unsigned long time_diff;
         unsigned long flags;
         unsigned long seq;
+        struct timespec tv;
 
         switch (when) {
         case PBOOK_SLEEP_NOW:
@@ -237,11 +247,9 @@ time_sleep_notify(struct pmu_sleep_notifier *self, int when)
                 } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
                 break;
         case PBOOK_WAKE:
-                write_seqlock_irqsave(&xtime_lock, flags);
-                xtime.tv_sec = pmac_get_rtc_time() + time_diff;
-                xtime.tv_nsec = 0;
-                last_rtc_update = xtime.tv_sec;
-                write_sequnlock_irqrestore(&xtime_lock, flags);
+                tv.tv_sec = pmac_get_boot_time() + time_diff;
+                tv.tv_nsec = 0;
+                do_settimeofday(&tv);
                 break;
         }
         return PBOOK_SLEEP_OK;