[MIPS] Fixup migration to GENERIC_TIME
Since we already moved to GENERIC_TIME, we should implement alternatives
of old do_gettimeoffset routines to get sub-jiffies resolution from
gettimeofday(). This patch includes:
* MIPS clocksource support (based on works by Manish Lachwani).
* remove unused gettimeoffset routines and related codes.
* remove unised 64bit do_div64_32().
* simplify mips_hpt_init. (no argument needed, __init tag)
* simplify c0_hpt_timer_init. (no need to write to c0_count)
* remove some hpt_init routines.
* mips_hpt_mask variable to specify bitmask of hpt value.
* convert jmr3927_do_gettimeoffset to jmr3927_hpt_read.
* convert ip27_do_gettimeoffset to ip27_hpt_read.
* convert bcm1480_do_gettimeoffset to bcm1480_hpt_read.
* simplify sb1250 hpt functions. (no need to subtract and shift)
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/div64.h b/include/asm-mips/div64.h
index 5f7dcf5..d107832 100644
--- a/include/asm-mips/div64.h
+++ b/include/asm-mips/div64.h
@@ -83,27 +83,6 @@
#if (_MIPS_SZLONG == 64)
/*
- * Don't use this one in new code
- */
-#define do_div64_32(res, high, low, base) ({ \
- unsigned int __quot, __mod; \
- unsigned long __div; \
- unsigned int __low, __high, __base; \
- \
- __high = (high); \
- __low = (low); \
- __div = __high; \
- __div = __div << 32 | __low; \
- __base = (base); \
- \
- __mod = __div % __base; \
- __div = __div / __base; \
- \
- __quot = __div; \
- (res) = __quot; \
- __mod; })
-
-/*
* Hey, we're already 64-bit, no
* need to play games..
*/
diff --git a/include/asm-mips/sibyte/sb1250.h b/include/asm-mips/sibyte/sb1250.h
index b09e16c..2ba6988 100644
--- a/include/asm-mips/sibyte/sb1250.h
+++ b/include/asm-mips/sibyte/sb1250.h
@@ -51,8 +51,8 @@
extern void sb1250_unmask_irq(int cpu, int irq);
extern void sb1250_smp_finish(void);
+extern void bcm1480_hpt_setup(void);
extern void bcm1480_time_init(void);
-extern unsigned long bcm1480_gettimeoffset(void);
extern void bcm1480_mask_irq(int cpu, int irq);
extern void bcm1480_unmask_irq(int cpu, int irq);
extern void bcm1480_smp_finish(void);
diff --git a/include/asm-mips/time.h b/include/asm-mips/time.h
index 28512ba..625acd3 100644
--- a/include/asm-mips/time.h
+++ b/include/asm-mips/time.h
@@ -48,7 +48,8 @@
* If mips_hpt_read is NULL, an R4k-compatible timer setup is attempted.
*/
extern unsigned int (*mips_hpt_read)(void);
-extern void (*mips_hpt_init)(unsigned int);
+extern void (*mips_hpt_init)(void);
+extern unsigned int mips_hpt_mask;
/*
* to_tm() converts system time back to (year, mon, day, hour, min, sec).
@@ -58,13 +59,6 @@
extern void to_tm(unsigned long tim, struct rtc_time *tm);
/*
- * do_gettimeoffset(). By default, this func pointer points to
- * do_null_gettimeoffset(), which leads to the same resolution as HZ.
- * Higher resolution versions are available, which give ~1us resolution.
- */
-extern unsigned long (*do_gettimeoffset)(void);
-
-/*
* high-level timer interrupt routines.
*/
extern irqreturn_t timer_interrupt(int irq, void *dev_id);