ARM: fix sa1100 build

Fix:

arch/arm/mach-sa1100/generic.c:117: error: redefinition of 'cpufreq_get'
include/linux/cpufreq.h:299: error: previous definition of 'cpufreq_get' was here

cpufreq_get() is used on these platforms to tell drivers what the CPU
frequency is, and therefore the bus frequency - which is critical for
setting the PCMCIA and LCD timings.  Adding ifdefs to these drivers to
select cpufreq_get() or some other interface adds confusion.  Making
these drivers use some other interface for the normal paths and cpufreq
stuff for the cpufreq notifier is insane as well.

(Why x86 can't provide a version of cpufreq_get() which returns the
CPU frequency when CPUFREQ is disabled is beyond me, rather than
requiring a dummy zero-returning cpufreq_get().  Especially as they
do:

			unsigned long khz = cpufreq_get(cpu);
			if (!khz)
				khz = tsc_khz;

In other words, if CPUFREQ is disabled, get it from tsc_khz - why
not provide a dummy cpufreq_get() which returns tsc_khz?)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Kconfig

@@ -603,6 +603,7 @@ config ARCH_SA1100
 	select ARCH_SPARSEMEM_ENABLE
 	select ARCH_MTD_XIP
 	select ARCH_HAS_CPUFREQ
+	select CPU_FREQ
 	select GENERIC_GPIO
 	select GENERIC_TIME
 	select GENERIC_CLOCKEVENTS
@@ -1359,13 +1360,9 @@ source "drivers/cpufreq/Kconfig"
 
 config CPU_FREQ_SA1100
 	bool
-	depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
-	default y
 
 config CPU_FREQ_SA1110
 	bool
-	depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
-	default y
 
 config CPU_FREQ_INTEGRATOR
 	tristate "CPUfreq driver for ARM Integrator CPUs"

arch/arm/mach-sa1100/Kconfig

@@ -4,6 +4,7 @@ menu "SA11x0 Implementations"
 
 config SA1100_ASSABET
 	bool "Assabet"
+	select CPU_FREQ_SA1110
 	help
 	  Say Y here if you are using the Intel(R) StrongARM(R) SA-1110
 	  Microprocessor Development Board (also known as the Assabet).
@@ -19,6 +20,7 @@ config ASSABET_NEPONSET
 
 config SA1100_CERF
 	bool "CerfBoard"
+	select CPU_FREQ_SA1110
 	help
 	  The Intrinsyc CerfBoard is based on the StrongARM 1110 (Discontinued).
 	  More information is available at:
@@ -45,6 +47,7 @@ endchoice
 
 config SA1100_COLLIE
 	bool "Sharp Zaurus SL5500"
+	# FIXME: select CPU_FREQ_SA11x0
 	select SHARP_LOCOMO
 	select SHARP_SCOOP
 	select SHARP_PARAM
@@ -54,6 +57,7 @@ config SA1100_COLLIE
 config SA1100_H3100
 	bool "Compaq iPAQ H3100"
 	select HTC_EGPIO
+	select CPU_FREQ_SA1100
 	help
 	  Say Y here if you intend to run this kernel on the Compaq iPAQ
 	  H3100 handheld computer.  Information about this machine and the
@@ -64,6 +68,7 @@ config SA1100_H3100
 config SA1100_H3600
 	bool "Compaq iPAQ H3600/H3700"
 	select HTC_EGPIO
+	select CPU_FREQ_SA1100
 	help
 	  Say Y here if you intend to run this kernel on the Compaq iPAQ
 	  H3600 handheld computer.  Information about this machine and the
@@ -74,6 +79,7 @@ config SA1100_H3600
 config SA1100_BADGE4
 	bool "HP Labs BadgePAD 4"
 	select SA1111
+	select CPU_FREQ_SA1100
 	help
 	  Say Y here if you want to build a kernel for the HP Laboratories
 	  BadgePAD 4.
@@ -81,6 +87,7 @@ config SA1100_BADGE4
 config SA1100_JORNADA720
 	bool "HP Jornada 720"
 	select SA1111
+	# FIXME: select CPU_FREQ_SA11x0
 	help
 	  Say Y here if you want to build a kernel for the HP Jornada 720
 	  handheld computer.  See <http://www.hp.com/jornada/products/720>
@@ -98,12 +105,14 @@ config SA1100_JORNADA720_SSP
 
 config SA1100_HACKKIT
 	bool "HackKit Core CPU Board"
+	select CPU_FREQ_SA1100
 	help
 	  Say Y here to support the HackKit Core CPU Board
 	  <http://hackkit.eletztrick.de>;
 
 config SA1100_LART
 	bool "LART"
+	select CPU_FREQ_SA1100
 	help
 	  Say Y here if you are using the Linux Advanced Radio Terminal
 	  (also known as the LART).  See <http://www.lartmaker.nl/> for
@@ -111,6 +120,7 @@ config SA1100_LART
 
 config SA1100_PLEB
 	bool "PLEB"
+	select CPU_FREQ_SA1100
 	help
 	  Say Y here if you are using version 1 of the Portable Linux
 	  Embedded Board (also known as PLEB).
@@ -119,6 +129,7 @@ config SA1100_PLEB
 
 config SA1100_SHANNON
 	bool "Shannon"
+	select CPU_FREQ_SA1100
 	help
 	  The Shannon (also known as a Tuxscreen, and also as a IS2630) was a
 	  limited edition webphone produced by Philips. The Shannon is a SA1100
@@ -127,6 +138,7 @@ config SA1100_SHANNON
 
 config SA1100_SIMPAD
 	bool "Simpad"
+	select CPU_FREQ_SA1110
 	help
 	  The SIEMENS webpad SIMpad is based on the StrongARM 1110. There
 	  are two different versions CL4 and SL4. CL4 has 32MB RAM and 16MB
@@ -145,3 +157,4 @@ config SA1100_SSP
 endmenu
 
 endif
+

arch/arm/mach-sa1100/generic.c

@@ -58,7 +58,6 @@ static const unsigned short cclk_frequency_100khz[NR_FREQS] = {
 	2802	/* 280.2 MHz */
 };
 
-#if defined(CONFIG_CPU_FREQ_SA1100) || defined(CONFIG_CPU_FREQ_SA1110)
 /* rounds up(!)  */
 unsigned int sa11x0_freq_to_ppcr(unsigned int khz)
 {
@@ -110,17 +109,6 @@ unsigned int sa11x0_getspeed(unsigned int cpu)
 	return cclk_frequency_100khz[PPCR & 0xf] * 100;
 }
 
-#else
-/*
- * We still need to provide this so building without cpufreq works.
- */
-unsigned int cpufreq_get(unsigned int cpu)
-{
-	return cclk_frequency_100khz[PPCR & 0xf] * 100;
-}
-EXPORT_SYMBOL(cpufreq_get);
-#endif
-
 /*
  * This is the SA11x0 sched_clock implementation.  This has
  * a resolution of 271ns, and a maximum value of 32025597s (370 days).