>From 8f6a1de829e17b9566556149482dfa7824555bec Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mano@xxxxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 28 May 2008 08:50:19 +0200
Subject: [PATCH] MIPS: make r4k clocksource/clockevent usable in other codepaths
Make the r4k cp0 counter clocksource and clockevent modules
library code so it may be used e.g. as a fallback in case other
clocksources/events aren't available.
Signed-off-by: Manuel Lauss <mano@xxxxxxxxxxxxxxxxxxxxxxx>
---
arch/mips/Kconfig | 8 ++++++++
arch/mips/kernel/Makefile | 4 ++--
arch/mips/kernel/cevt-r4k.c | 2 +-
arch/mips/kernel/csrc-r4k.c | 2 +-
include/asm-mips/time.h | 24 ++++++++++++++++--------
5 files changed, 28 insertions(+), 12 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index e5a7c5d..58168c7 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -777,7 +777,11 @@ config CEVT_DS1287
config CEVT_GT641XX
bool
+config CEVT_R4K_LIB
+ bool
+
config CEVT_R4K
+ select CEVT_R4K_LIB
bool
config CEVT_SB1250
@@ -792,7 +796,11 @@ config CSRC_BCM1480
config CSRC_IOASIC
bool
+config CSRC_R4K_LIB
+ bool
+
config CSRC_R4K
+ select CSRC_R4K_LIB
bool
config CSRC_SB1250
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index cc02440..aa352d6 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -9,14 +9,14 @@ obj-y += cpu-probe.o branch.o entry.o genex.o irq.o process.o \
time.o topology.o traps.o unaligned.o
obj-$(CONFIG_CEVT_BCM1480) += cevt-bcm1480.o
-obj-$(CONFIG_CEVT_R4K) += cevt-r4k.o
+obj-$(CONFIG_CEVT_R4K_LIB) += cevt-r4k.o
obj-$(CONFIG_CEVT_DS1287) += cevt-ds1287.o
obj-$(CONFIG_CEVT_GT641XX) += cevt-gt641xx.o
obj-$(CONFIG_CEVT_SB1250) += cevt-sb1250.o
obj-$(CONFIG_CEVT_TXX9) += cevt-txx9.o
obj-$(CONFIG_CSRC_BCM1480) += csrc-bcm1480.o
obj-$(CONFIG_CSRC_IOASIC) += csrc-ioasic.o
-obj-$(CONFIG_CSRC_R4K) += csrc-r4k.o
+obj-$(CONFIG_CSRC_R4K_LIB) += csrc-r4k.o
obj-$(CONFIG_CSRC_SB1250) += csrc-sb1250.o
obj-$(CONFIG_SYNC_R4K) += sync-r4k.o
diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c
index 24a2d90..70f6343 100644
--- a/arch/mips/kernel/cevt-r4k.c
+++ b/arch/mips/kernel/cevt-r4k.c
@@ -219,7 +219,7 @@ static int c0_compare_int_usable(void)
return 1;
}
-int __cpuinit mips_clockevent_init(void)
+int __cpuinit r4k_clockevent_init(void)
{
uint64_t mips_freq = mips_hpt_frequency;
unsigned int cpu = smp_processor_id();
diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c
index 86e026f..8dc1235 100644
--- a/arch/mips/kernel/csrc-r4k.c
+++ b/arch/mips/kernel/csrc-r4k.c
@@ -22,7 +22,7 @@ static struct clocksource clocksource_mips = {
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
-int __init init_mips_clocksource(void)
+int __init init_r4k_clocksource(void)
{
if (!cpu_has_counter || !mips_hpt_frequency)
return -ENXIO;
diff --git a/include/asm-mips/time.h b/include/asm-mips/time.h
index d3bd5c5..01a4c93 100644
--- a/include/asm-mips/time.h
+++ b/include/asm-mips/time.h
@@ -50,27 +50,35 @@ extern int (*perf_irq)(void);
/*
* Initialize the calling CPU's compare interrupt as clockevent device
*/
-#ifdef CONFIG_CEVT_R4K
-extern int mips_clockevent_init(void);
+#ifdef CONFIG_CEVT_R4K_LIB
extern unsigned int __weak get_c0_compare_int(void);
-#else
+extern int r4k_clockevent_init(void);
+#endif
+
static inline int mips_clockevent_init(void)
{
+#ifdef CONFIG_CEVT_R4K
+ return r4k_clockevent_init();
+#else
return -ENXIO;
-}
#endif
+}
/*
* Initialize the count register as a clocksource
*/
-#ifdef CONFIG_CEVT_R4K
-extern int init_mips_clocksource(void);
-#else
+#ifdef CONFIG_CSRC_R4K_LIB
+extern int init_r4k_clocksource(void);
+#endif
+
static inline int init_mips_clocksource(void)
{
+#ifdef CONFIG_CSRC_R4K
+ return init_r4k_clocksource(void);
+#else
return 0;
-}
#endif
+}
extern void clocksource_set_clock(struct clocksource *cs, unsigned int clock);
extern void clockevent_set_clock(struct clock_event_device *cd,
--
1.5.5.1
