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linux-vybrid_public
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add HAVE_CLK to Kconfig, for driver dependencies

Flag platforms as HAVE_CLK (or not) in Kconfig, based on whether they
support <linux/clk.h> calls, so that otherwise portable drivers which need
those calls can list that dependency.

Something like this is a prerequisite for merging the musb_hdrc driver,
currently used on platforms including Davinci, OMAP2430, OMAP3xx ...  and
the discrete TUSB6010 chip, which doesn't have a natural platform
dependency.  (Used with OMAP 2420 in current Nokia N8x0 tablets.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Brownell 17 лет назад
Родитель
d7ce20b202
Сommit
9483a578df
5 измененных файлов с 23 добавлено и 0 удалено
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  1. 7 0
      arch/Kconfig
  2. 13 0
      arch/arm/Kconfig
  3. 1 0
      arch/avr32/Kconfig
  4. 1 0
      arch/powerpc/Kconfig
  5. 1 0
      arch/sh/Kconfig

+ 7 - 0
arch/Kconfig
Просмотреть файл 

@@ -42,3 +42,10 @@ config HAVE_DMA_ATTRS
 
 
 config USE_GENERIC_SMP_HELPERS
 
 	def_bool n
 
+
 
+config HAVE_CLK
 
+	def_bool n
 
+	help
 
+	  The <linux/clk.h> calls support software clock gating and
 
+	  thus are a key power management tool on many systems.
 
+

+ 13 - 0
arch/arm/Kconfig
Просмотреть файл 

@@ -198,12 +198,14 @@ choice
 
 config ARCH_AAEC2000
 
 	bool "Agilent AAEC-2000 based"
 
 	select ARM_AMBA
 
+	select HAVE_CLK
 
 	help
 
 	  This enables support for systems based on the Agilent AAEC-2000
 
 
 config ARCH_INTEGRATOR
 
 	bool "ARM Ltd. Integrator family"
 
 	select ARM_AMBA
 
+	select HAVE_CLK
 
 	select ICST525
 
 	help
 
 	  Support for ARM's Integrator platform.
 
@@ -211,6 +213,7 @@ config ARCH_INTEGRATOR
 
 config ARCH_REALVIEW
 
 	bool "ARM Ltd. RealView family"
 
 	select ARM_AMBA
 
+	select HAVE_CLK
 
 	select ICST307
 
 	select GENERIC_TIME
 
 	select GENERIC_CLOCKEVENTS
 
@@ -221,6 +224,7 @@ config ARCH_VERSATILE
 
 	bool "ARM Ltd. Versatile family"
 
 	select ARM_AMBA
 
 	select ARM_VIC
 
+	select HAVE_CLK
 
 	select ICST307
 
 	select GENERIC_TIME
 
 	select GENERIC_CLOCKEVENTS
 
@@ -262,6 +266,8 @@ config ARCH_EP93XX
 
 	select ARM_AMBA
 
 	select ARM_VIC
 
 	select GENERIC_GPIO
 
+	select HAVE_CLK
 
+	select HAVE_CLK
 
 	select HAVE_GPIO_LIB
 
 	help
 
 	  This enables support for the Cirrus EP93xx series of CPUs.
 
@@ -381,6 +387,7 @@ config ARCH_NS9XXX
 
 	select GENERIC_GPIO
 
 	select GENERIC_TIME
 
 	select GENERIC_CLOCKEVENTS
 
+	select HAVE_CLK
 
 	help
 
 	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 
 	  System.
 
@@ -430,6 +437,7 @@ config ARCH_ORION5X
 
 
 config ARCH_PNX4008
 
 	bool "Philips Nexperia PNX4008 Mobile"
 
+	select HAVE_CLK
 
 	help
 
 	  This enables support for Philips PNX4008 mobile platform.
 
 
@@ -438,6 +446,7 @@ config ARCH_PXA
 
 	depends on MMU
 
 	select ARCH_MTD_XIP
 
 	select GENERIC_GPIO
 
+	select HAVE_CLK
 
 	select HAVE_GPIO_LIB
 
 	select GENERIC_TIME
 
 	select GENERIC_CLOCKEVENTS
 
@@ -468,6 +477,7 @@ config ARCH_SA1100
 
 	select GENERIC_GPIO
 
 	select GENERIC_TIME
 
 	select GENERIC_CLOCKEVENTS
 
+	select HAVE_CLK
 
 	select TICK_ONESHOT
 
 	select HAVE_GPIO_LIB
 
 	help
 
@@ -476,6 +486,7 @@ config ARCH_SA1100
 
 config ARCH_S3C2410
 
 	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
 
 	select GENERIC_GPIO
 
+	select HAVE_CLK
 
 	help
 
 	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 
 	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 
@@ -503,12 +514,14 @@ config ARCH_DAVINCI
 
 	select GENERIC_TIME
 
 	select GENERIC_CLOCKEVENTS
 
 	select GENERIC_GPIO
 
+	select HAVE_CLK
 
 	help
 
 	  Support for TI's DaVinci platform.
 
 
 config ARCH_OMAP
 
 	bool "TI OMAP"
 
 	select GENERIC_GPIO
 
+	select HAVE_CLK
 
 	select HAVE_GPIO_LIB
 
 	select GENERIC_TIME
 
 	select GENERIC_CLOCKEVENTS

+ 1 - 0
arch/avr32/Kconfig
Просмотреть файл 

@@ -10,6 +10,7 @@ config AVR32
 
 	# With EMBEDDED=n, we get lots of stuff automatically selected
 
 	# that we usually don't need on AVR32.
 
 	select EMBEDDED
 
+	select HAVE_CLK
 
 	select HAVE_OPROFILE
 
 	select HAVE_KPROBES
 
 	help

+ 1 - 0
arch/powerpc/Kconfig
Просмотреть файл 

@@ -843,6 +843,7 @@ source "crypto/Kconfig"
 
 config PPC_CLOCK
 
 	bool
 
 	default n
 
+	select HAVE_CLK
 
 
 config PPC_LIB_RHEAP
 
 	bool

+ 1 - 0
arch/sh/Kconfig
Просмотреть файл 

@@ -8,6 +8,7 @@ mainmenu "Linux/SuperH Kernel Configuration"
 
 config SUPERH
 
 	def_bool y
 
 	select EMBEDDED
 
+	select HAVE_CLK
 
 	select HAVE_IDE
 
 	select HAVE_OPROFILE
 
 	help