add HAVE_CLK to Kconfig, for driver dependencies
Subsystems (3)
PATCH 1/1 add HAVE_CLK to Kconfig, for driver dependencies
From: David Brownell <[email protected]>
This patch flags platforms as HAVE_CLK (or not) in Kconfig, so that otherwise portable drivers which need those calls can list that dependency.
Signed-off-by David Brownell <[email protected]>
---
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.)
arch/Kconfig | 7 +++++++ arch/arm/Kconfig | 13 +++++++++++++ arch/avr32/Kconfig | 1 + arch/powerpc/Kconfig | 1 + arch/sh/Kconfig | 1 + 5 files changed, 23 insertions(+)
arch/Kconfig +7 -0
@@ -39,3 +39,10 @@ config HAVE_KRETPROBES config HAVE_DMA_ATTRS 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. +
arch/arm/Kconfig +13 -0
@@ -183,12 +183,14 @@ 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.
@@ -196,6 +198,7 @@ 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
@@ -206,6 +209,7 @@ 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
@@ -215,6 +219,7 @@ config ARCH_VERSATILE config ARCH_AT91 bool "Atmel AT91" select GENERIC_GPIO + select HAVE_CLK select HAVE_GPIO_LIB help This enables support for systems based on the Atmel AT91RM9200,
@@ -255,6 +260,7 @@ config ARCH_EP93XX select ARM_AMBA select ARM_VIC select GENERIC_GPIO + select HAVE_CLK select HAVE_GPIO_LIB help This enables support for the Cirrus EP93xx series of CPUs.
@@ -360,6 +366,7 @@ 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.
@@ -386,6 +393,7 @@ config ARCH_ORION5X config ARCH_PNX4008 bool "Philips Nexperia PNX4008 Mobile" + select HAVE_CLK help This enables support for Philips PNX4008 mobile platform.
@@ -394,6 +402,7 @@ 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
@@ -423,6 +432,7 @@ config ARCH_SA1100 select GENERIC_GPIO select GENERIC_TIME select GENERIC_CLOCKEVENTS + select HAVE_CLK select TICK_ONESHOT select HAVE_GPIO_LIB help
@@ -431,6 +441,7 @@ 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
@@ -458,12 +469,14 @@ 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
arch/avr32/Kconfig +1 -0
@@ -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
arch/powerpc/Kconfig +1 -0
@@ -812,6 +812,7 @@ source "crypto/Kconfig" config PPC_CLOCK bool default n + select HAVE_CLK config PPC_LIB_RHEAP bool
arch/sh/Kconfig +1 -0
@@ -8,6 +8,7 @@ mainmenu "Linux/SuperH Kernel Configurat config SUPERH def_bool y select EMBEDDED + select HAVE_CLK select HAVE_IDE select HAVE_OPROFILE help
Quoted 7 lines · David Brownell
From: David Brownell <[email protected]>
This patch flags platforms as
HAVE_CLK(or not) inKconfig, so that otherwise portable drivers which need those calls can list that dependency.Signed-off-by David Brownell <[email protected]>
Great idea! This will allow us to clean up some of the dependency mess in the shared AVR32/AT91 drivers and get better compile-testing coverage.