diff options
| author | Manuel Lauss <mano@roarinelk.homelinux.net> | 2008-12-21 09:26:22 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-01-11 09:57:26 +0000 |
| commit | 779e7d41ad004946603da139da99ba775f74cb1c (patch) | |
| tree | befca6de7d38cfb689150e722164e3d2dad7aca7 /arch/mips/include | |
| parent | 074cf656700ddd1d2bd7f815f78e785418beb898 (diff) | |
MIPS: make cp0 counter clocksource/event usable as fallback.
The current mips clock build infrastructure lets a system only use
either the MIPS cp0 counter or a SoC specific timer as a clocksource /
clockevent device.
This patch renames the core cp0 counter clocksource / clockevent functions
from mips_* to r4k_* and updates the wrappers in asm-mips/time.h to
call these renamed functions instead.
Chips which can detect whether it is safe to use a chip-specific timer
can now fall back on the cp0 counter if necessary and possible
(e.g. Alchemy with a follow-on patch).
Existing behaviour is not changed in any way.
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/time.h | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/arch/mips/include/asm/time.h b/arch/mips/include/asm/time.h index 9601ea95054..38a30d2ee95 100644 --- a/arch/mips/include/asm/time.h +++ b/arch/mips/include/asm/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_CSRC_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(); +#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, |