[MIPS] mips HPT cleanup: make clocksource_mips public

Make clocksource_mips public and get rid of mips_hpt_read,
mips_hpt_mask.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 16 insertions, 26 deletions

diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index 111d1baa3b22..11aab6d6bfe5 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -11,7 +11,6 @@
  * Free Software Foundation;  either version 2 of the  License, or (at your
  * option) any later version.
  */
-#include <linux/clocksource.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
@@ -83,7 +82,7 @@ static void null_timer_ack(void) { /* nothing */ }
 /*
  * Null high precision timer functions for systems lacking one.
  */
-static unsigned int null_hpt_read(void)
+static cycle_t null_hpt_read(void)
 {
 	return 0;
 }
@@ -112,7 +111,7 @@ static void c0_timer_ack(void)
 /*
  * High precision timer functions for a R4k-compatible timer.
  */
-static unsigned int c0_hpt_read(void)
+static cycle_t c0_hpt_read(void)
 {
 	return read_c0_count();
 }
@@ -126,8 +125,6 @@ static void __init c0_hpt_timer_init(void)
 
 int (*mips_timer_state)(void);
 void (*mips_timer_ack)(void);
-unsigned int (*mips_hpt_read)(void);
-unsigned int mips_hpt_mask = 0xffffffff;
 
 /* last time when xtime and rtc are sync'ed up */
 static long last_rtc_update;
@@ -269,8 +266,7 @@ static struct irqaction timer_irqaction = {
 
 static unsigned int __init calibrate_hpt(void)
 {
-	u64 frequency;
-	u32 hpt_start, hpt_end, hpt_count, hz;
+	cycle_t frequency, hpt_start, hpt_end, hpt_count, hz;
 
 	const int loops = HZ / 10;
 	int log_2_loops = 0;
@@ -296,28 +292,23 @@ static unsigned int __init calibrate_hpt(void)
 	 * during the calculated number of periods between timer
 	 * interrupts.
 	 */
-	hpt_start = mips_hpt_read();
+	hpt_start = clocksource_mips.read();
 	do {
 		while (mips_timer_state());
 		while (!mips_timer_state());
 	} while (--i);
-	hpt_end = mips_hpt_read();
+	hpt_end = clocksource_mips.read();
 
-	hpt_count = (hpt_end - hpt_start) & mips_hpt_mask;
+	hpt_count = (hpt_end - hpt_start) & clocksource_mips.mask;
 	hz = HZ;
-	frequency = (u64)hpt_count * (u64)hz;
+	frequency = hpt_count * hz;
 
 	return frequency >> log_2_loops;
 }
 
-static cycle_t read_mips_hpt(void)
-{
-	return (cycle_t)mips_hpt_read();
-}
-
-static struct clocksource clocksource_mips = {
+struct clocksource clocksource_mips = {
 	.name		= "MIPS",
-	.read		= read_mips_hpt,
+	.mask		= 0xffffffff,
 	.is_continuous	= 1,
 };
 
@@ -326,7 +317,7 @@ static void __init init_mips_clocksource(void)
 	u64 temp;
 	u32 shift;
 
-	if (!mips_hpt_frequency || mips_hpt_read == null_hpt_read)
+	if (!mips_hpt_frequency || clocksource_mips.read == null_hpt_read)
 		return;
 
 	/* Calclate a somewhat reasonable rating value */
@@ -340,7 +331,6 @@ static void __init init_mips_clocksource(void)
 	}
 	clocksource_mips.shift = shift;
 	clocksource_mips.mult = (u32)temp;
-	clocksource_mips.mask = mips_hpt_mask;
 
 	clocksource_register(&clocksource_mips);
 }
@@ -360,19 +350,19 @@ void __init time_init(void)
 	                        -xtime.tv_sec, -xtime.tv_nsec);
 
 	/* Choose appropriate high precision timer routines.  */
-	if (!cpu_has_counter && !mips_hpt_read)
+	if (!cpu_has_counter && !clocksource_mips.read)
 		/* No high precision timer -- sorry.  */
-		mips_hpt_read = null_hpt_read;
+		clocksource_mips.read = null_hpt_read;
 	else if (!mips_hpt_frequency && !mips_timer_state) {
 		/* A high precision timer of unknown frequency.  */
-		if (!mips_hpt_read)
+		if (!clocksource_mips.read)
 			/* No external high precision timer -- use R4k.  */
-			mips_hpt_read = c0_hpt_read;
+			clocksource_mips.read = c0_hpt_read;
 	} else {
 		/* We know counter frequency.  Or we can get it.  */
-		if (!mips_hpt_read) {
+		if (!clocksource_mips.read) {
 			/* No external high precision timer -- use R4k.  */
-			mips_hpt_read = c0_hpt_read;
+			clocksource_mips.read = c0_hpt_read;
 
 			if (!mips_timer_state) {
 				/* No external timer interrupt -- use R4k.  */