powerpc: Move some calculations from xxx_calibrate_decr to time_init

Previously the individual xxx_calibrate_decr functions would each
print the timebase and cpu frequency and calculate several values
such as tb_to_us and tb_to_xs.  This moves those printks and
calculations into time_init just after the call to the platform's
calibrate_decr function.

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

diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index d160847..7d406b7 100644 (file)
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -548,11 +548,9 @@ int do_settimeofday(struct timespec *tv)
 
 EXPORT_SYMBOL(do_settimeofday);
 
-#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_MAPLE) || defined(CONFIG_PPC_BPA) || defined(CONFIG_PPC_ISERIES)
 void __init generic_calibrate_decr(void)
 {
        struct device_node *cpu;
-       struct div_result divres;
        unsigned int *fp;
        int node_found;
 
@@ -591,20 +589,7 @@ void __init generic_calibrate_decr(void)
                                "(not found)\n");
 
        of_node_put(cpu);
-
-       printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
-              ppc_tb_freq/1000000, ppc_tb_freq%1000000);
-       printk(KERN_INFO "time_init: processor frequency   = %lu.%.6lu MHz\n",
-              ppc_proc_freq/1000000, ppc_proc_freq%1000000);
-
-       tb_ticks_per_jiffy = ppc_tb_freq / HZ;
-       tb_ticks_per_sec = tb_ticks_per_jiffy * HZ;
-       tb_ticks_per_usec = ppc_tb_freq / 1000000;
-       tb_to_us = mulhwu_scale_factor(ppc_tb_freq, 1000000);
-       div128_by_32(1024*1024, 0, tb_ticks_per_sec, &divres);
-       tb_to_xs = divres.result_low;
 }
-#endif
 
 unsigned long get_boot_time(void)
 {
@@ -633,6 +618,18 @@ void __init time_init(void)
 
        ppc_md.calibrate_decr();
 
+       printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
+              ppc_tb_freq / 1000000, ppc_tb_freq % 1000000);
+       printk(KERN_INFO "time_init: processor frequency   = %lu.%.6lu MHz\n",
+              ppc_proc_freq / 1000000, ppc_proc_freq % 1000000);
+
+       tb_ticks_per_jiffy = ppc_tb_freq / HZ;
+       tb_ticks_per_sec = tb_ticks_per_jiffy * HZ;
+       tb_ticks_per_usec = ppc_tb_freq / 1000000;
+       tb_to_us = mulhwu_scale_factor(ppc_tb_freq, 1000000);
+       div128_by_32(1024*1024, 0, tb_ticks_per_sec, &res);
+       tb_to_xs = res.result_low;
+
 #ifdef CONFIG_PPC64
        get_paca()->default_decr = tb_ticks_per_jiffy;
 #endif

diff --git a/arch/ppc64/kernel/pmac_time.c b/arch/ppc64/kernel/pmac_time.c
index 56f3351..928bf21 100644 (file)
--- a/arch/ppc64/kernel/pmac_time.c
+++ b/arch/ppc64/kernel/pmac_time.c
@@ -152,8 +152,7 @@ unsigned long __init pmac_get_boot_time(void)
 void __init pmac_calibrate_decr(void)
 {
        struct device_node *cpu;
-       unsigned int freq, *fp;
-       struct div_result divres;
+       unsigned int *fp;
 
        /*
         * The cpu node should have a timebase-frequency property
@@ -165,16 +164,7 @@ void __init pmac_calibrate_decr(void)
        fp = (unsigned int *) get_property(cpu, "timebase-frequency", NULL);
        if (fp == 0)
                panic("can't get cpu timebase frequency");
-       freq = *fp;
-       printk("time_init: decrementer frequency = %u.%.6u MHz\n",
-              freq/1000000, freq%1000000);
-       tb_ticks_per_jiffy = freq / HZ;
-       tb_ticks_per_sec = tb_ticks_per_jiffy * HZ;
-       tb_ticks_per_usec = freq / 1000000;
-       tb_to_us = mulhwu_scale_factor(freq, 1000000);
-       div128_by_32( 1024*1024, 0, tb_ticks_per_sec, &divres );
-       tb_to_xs = divres.result_low;
-       ppc_tb_freq = freq;
+       ppc_tb_freq = *fp;
 
        fp = (unsigned int *)get_property(cpu, "clock-frequency", NULL);
        if (fp == 0)