Commit 9483a578 authored by David Brownell's avatar David Brownell Committed by Linus Torvalds

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: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Acked-by: default avatarHaavard 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d7ce20b2
......@@ -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.
......@@ -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
......
......@@ -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
......
......@@ -843,6 +843,7 @@ source "crypto/Kconfig"
config PPC_CLOCK
bool
default n
select HAVE_CLK
config PPC_LIB_RHEAP
bool
......
......@@ -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
......
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