sh: Use SYS_SUPPORTS_CMT for managing CMT timer dependencies.

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig

@@ -107,6 +107,9 @@ config SYS_SUPPORTS_NUMA
 config SYS_SUPPORTS_PCI
 	bool
 
+config SYS_SUPPORTS_CMT
+	bool
+
 config STACKTRACE_SUPPORT
 	def_bool y
 
@@ -188,6 +191,7 @@ choice
 config CPU_SUBTYPE_SH7619
 	bool "Support SH7619 processor"
 	select CPU_SH2
+	select SYS_SUPPORTS_CMT
 
 # SH-2A Processor Support
 
@@ -200,15 +204,18 @@ config CPU_SUBTYPE_SH7203
 	bool "Support SH7203 processor"
 	select CPU_SH2A
 	select CPU_HAS_FPU
+	select SYS_SUPPORTS_CMT
 
 config CPU_SUBTYPE_SH7206
 	bool "Support SH7206 processor"
 	select CPU_SH2A
+	select SYS_SUPPORTS_CMT
 
 config CPU_SUBTYPE_SH7263
 	bool "Support SH7263 processor"
 	select CPU_SH2A
 	select CPU_HAS_FPU
+	select SYS_SUPPORTS_CMT
 
 config CPU_SUBTYPE_MXG
 	bool "Support MX-G processor"
@@ -324,6 +331,7 @@ config CPU_SUBTYPE_SH7723
 	select CPU_SH4A
 	select CPU_SHX2
 	select ARCH_SPARSEMEM_ENABLE
+	select SYS_SUPPORTS_CMT
 	help
 	  Select SH7723 if you have an SH-MobileR2 CPU.
 
@@ -362,6 +370,7 @@ config CPU_SUBTYPE_SHX3
 config CPU_SUBTYPE_SH7343
 	bool "Support SH7343 processor"
 	select CPU_SH4AL_DSP
+	select SYS_SUPPORTS_CMT
 
 config CPU_SUBTYPE_SH7722
 	bool "Support SH7722 processor"
@@ -369,6 +378,7 @@ config CPU_SUBTYPE_SH7722
 	select CPU_SHX2
 	select ARCH_SPARSEMEM_ENABLE
 	select SYS_SUPPORTS_NUMA
+	select SYS_SUPPORTS_CMT
 
 config CPU_SUBTYPE_SH7366
 	bool "Support SH7366 processor"
@@ -376,6 +386,7 @@ config CPU_SUBTYPE_SH7366
 	select CPU_SHX2
 	select ARCH_SPARSEMEM_ENABLE
 	select SYS_SUPPORTS_NUMA
+	select SYS_SUPPORTS_CMT
 
 # SH-5 Processor Support
 
@@ -397,34 +408,36 @@ source "arch/sh/boards/Kconfig"
 
 menu "Timer and clock configuration"
 
-config SH_TIMER_CMT
-	def_bool n
-	prompt "CMT support"
-	select GENERIC_TIME
-	select GENERIC_CLOCKEVENTS
-	help
-	  This enables build of the CMT system timer driver.
-
 config SH_TMU
-	def_bool y
-	prompt "TMU timer support"
+	bool "TMU timer support"
 	depends on CPU_SH3 || CPU_SH4
+	default y
 	select GENERIC_TIME
 	select GENERIC_CLOCKEVENTS
 	help
 	  This enables the use of the TMU as the system timer.
 
 config SH_CMT
-	def_bool y
-	prompt "CMT timer support"
-	depends on CPU_SH2 && !CPU_SUBTYPE_MXG
+	bool "CMT timer support"
+	depends on SYS_SUPPORTS_CMT
+	default y
 	help
 	  This enables the use of the CMT as the system timer.
 
+#
+# Support for the new-style CMT driver. This will replace SH_CMT
+# once its other dependencies are merged.
+#
+config SH_TIMER_CMT
+	bool "CMT clockevents driver"
+	depends on SYS_SUPPORTS_CMT && !SH_CMT
+	select GENERIC_TIME
+	select GENERIC_CLOCKEVENTS
+
 config SH_MTU2
-	def_bool n
-	prompt "MTU2 timer support"
+	bool "MTU2 timer support"
 	depends on CPU_SH2A
+	default y
 	help
 	  This enables the use of the MTU2 as the system timer.