ARM: vexpress: refine dependencies for new code

The versatile express changes for 3.16 introduced a number of
build regressions for randconfig kernels by not tracking dependencies
between the components right.

This patch tries to rectify that:

* the mach-vexpress code cannot link without the syscfg driver,
  which in turn needs MFD_VEXPRESS_SYSREG
* various drivers call devm_regmap_init_vexpress_config(), which
  has to be exported so it can be used by loadable modules
* the configuration bus uses OF DT helper functions that are not
  available to platforms disable CONFIG_OF
* The sysreg driver exports GPIOs through gpiolib, which can
  be disabled on some platforms.
* The clocksource code cannot be built on platforms that don't
  use modern timekeeping but rely on gettimeoffset.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2014-05-26 17:25:22 +02:00
Родитель 5a3babfcd2
Коммит b33cdd283b
5 изменённых файлов: 6 добавлений и 3 удалений

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@ -18,6 +18,8 @@ config ARCH_VEXPRESS
select POWER_SUPPLY
select REGULATOR_FIXED_VOLTAGE if REGULATOR
select VEXPRESS_CONFIG
select VEXPRESS_SYSCFG
select MFD_VEXPRESS_SYSREG
help
This option enables support for systems using Cortex processor based
ARM core and logic (FPGA) tiles on the Versatile Express motherboard,

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@ -46,6 +46,7 @@ config VEXPRESS_CONFIG
bool "Versatile Express configuration bus"
default y if ARCH_VEXPRESS
depends on ARM || ARM64
depends on OF
select REGMAP
help
Platform configuration infrastructure for the ARM Ltd.

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@ -118,7 +118,7 @@ struct regmap *devm_regmap_init_vexpress_config(struct device *dev)
return regmap;
}
EXPORT_SYMBOL_GPL(devm_regmap_init_vexpress_config);
struct device *vexpress_config_bridge_register(struct device *parent,
struct vexpress_config_bridge_ops *ops, void *context)

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@ -194,7 +194,7 @@ config CLKSRC_QCOM
config CLKSRC_VERSATILE
bool "ARM Versatile (Express) reference platforms clock source"
depends on GENERIC_SCHED_CLOCK
depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
select CLKSRC_OF
default y if MFD_VEXPRESS_SYSREG
help

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@ -1229,7 +1229,7 @@ endmenu
config MFD_VEXPRESS_SYSREG
bool "Versatile Express System Registers"
depends on VEXPRESS_CONFIG
depends on VEXPRESS_CONFIG && GPIOLIB
default y
select CLKSRC_MMIO
select GPIO_GENERIC_PLATFORM