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MIPS: Remove usage of CEVT_R4K_LIB config option.

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Manuel Lauss <manuel.lauss@gmail.com> writes:

I introduced it as a fallback because early revisions of Alchemy hardware
we shipped had a non-functional 32kHz timer and had to rely on the r4k
timer instead.  Previously the r4k timer was initialized regardless, but
it's useless with the "wait" instruction.

So long story short:   I need either the on-chip 32kHz timer OR the r4k
timer if the 32kHz one is unusable, but not both, and r4k timer is useless
when au1k_idle is in use.

The current in-kernel Alchemy boards all work with the 32kHz timer, so I'm
not against removing R4K_LIB symbols.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2012-11-30 17:27:27 +01:00
parent d7ea335c05
commit f772cdb2bd
3 changed files with 2 additions and 8 deletions
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6
arch/mips/Kconfig
View File

@ -54,7 +54,7 @@ choice
config MIPS_ALCHEMY
bool "Alchemy processor based machines"
select 64BIT_PHYS_ADDR
select CEVT_R4K_LIB
select CEVT_R4K
select CSRC_R4K
select IRQ_CPU
select SYS_HAS_CPU_MIPS32_R1
@ -926,11 +926,7 @@ config CEVT_DS1287
config CEVT_GT641XX
bool
config CEVT_R4K_LIB
bool
config CEVT_R4K
select CEVT_R4K_LIB
bool
config CEVT_SB1250

2
arch/mips/include/asm/time.h
View File

@ -50,10 +50,8 @@ extern int (*perf_irq)(void);
/*
* Initialize the calling CPU's compare interrupt as clockevent device
*/
#ifdef CONFIG_CEVT_R4K_LIB
extern unsigned int __weak get_c0_compare_int(void);
extern int r4k_clockevent_init(void);
#endif
static inline int mips_clockevent_init(void)
{

2
arch/mips/kernel/Makefile
View File

@ -16,7 +16,7 @@ CFLAGS_REMOVE_perf_event_mipsxx.o = -pg
endif
obj-$(CONFIG_CEVT_BCM1480) += cevt-bcm1480.o
obj-$(CONFIG_CEVT_R4K_LIB) += cevt-r4k.o
obj-$(CONFIG_CEVT_R4K) += cevt-r4k.o
obj-$(CONFIG_MIPS_MT_SMTC) += cevt-smtc.o
obj-$(CONFIG_CEVT_DS1287) += cevt-ds1287.o
obj-$(CONFIG_CEVT_GT641XX) += cevt-gt641xx.o