MIPS: Remove usage of CSRC_R4K_LIB config option.

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: NSteven J. Hill <sjhill@mips.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig

@@ -55,7 +55,7 @@ config MIPS_ALCHEMY
 	bool "Alchemy processor based machines"
 	select 64BIT_PHYS_ADDR
 	select CEVT_R4K_LIB
-	select CSRC_R4K_LIB
+	select CSRC_R4K
 	select IRQ_CPU
 	select SYS_HAS_CPU_MIPS32_R1
 	select SYS_SUPPORTS_32BIT_KERNEL
@@ -948,11 +948,7 @@ config CSRC_IOASIC
 config CSRC_POWERTV
 	bool
 
-config CSRC_R4K_LIB
-	bool
-
 config CSRC_R4K
-	select CSRC_R4K_LIB
 	bool
 
 config CSRC_SB1250

arch/mips/include/asm/time.h

@@ -71,7 +71,7 @@ static inline int mips_clockevent_init(void)
 /*
  * Initialize the count register as a clocksource
  */
-#ifdef CONFIG_CSRC_R4K_LIB
+#ifdef CONFIG_CSRC_R4K
 extern int init_r4k_clocksource(void);
 #endif
 

arch/mips/kernel/Makefile

@@ -25,7 +25,7 @@ obj-$(CONFIG_CEVT_TXX9)		+= cevt-txx9.o
 obj-$(CONFIG_CSRC_BCM1480)	+= csrc-bcm1480.o
 obj-$(CONFIG_CSRC_IOASIC)	+= csrc-ioasic.o
 obj-$(CONFIG_CSRC_POWERTV)	+= csrc-powertv.o
-obj-$(CONFIG_CSRC_R4K_LIB)	+= csrc-r4k.o
+obj-$(CONFIG_CSRC_R4K)		+= csrc-r4k.o
 obj-$(CONFIG_CSRC_SB1250)	+= csrc-sb1250.o
 obj-$(CONFIG_SYNC_R4K)		+= sync-r4k.o