linux/arch/avr32/Kconfig
David Brownell b98348bdd0 gpiolib: avr32 at32ap platform support
Teach AVR32 to use the "GPIO Library" when exposing its GPIOs, so that signals
on external chips (like GPIO expanders) can easily be used.

This mostly reorganizes some existing logic, with two minor changes in
behavior:

 - The PSR registers are used instead of the previous "gpio_mask" values,
   matching AT91 behavior and removing some duplication between that role
   and that of "pinmux_mask".

 - NR_IRQs grew to acommodate a bank of external GPIOs.  Eventually this
   number should probably become a board-specific config option.

There's a debugfs dump of status for the built-in GPIOs, showing which pins
have deglitching, pullups, or open drain drive enabled, as well as the ID
string used when requesting each IRQ.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Eric Miao <eric.miao@marvell.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:13 -08:00

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#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#
mainmenu "Linux Kernel Configuration"
config AVR32
def_bool y
# With EMBEDDED=n, we get lots of stuff automatically selected
# that we usually don't need on AVR32.
select EMBEDDED
select HAVE_OPROFILE
select HAVE_KPROBES
help
AVR32 is a high-performance 32-bit RISC microprocessor core,
designed for cost-sensitive embedded applications, with particular
emphasis on low power consumption and high code density.
There is an AVR32 Linux project with a web page at
http://avr32linux.org/.
config GENERIC_GPIO
def_bool y
config GENERIC_HARDIRQS
def_bool y
config STACKTRACE_SUPPORT
def_bool y
config LOCKDEP_SUPPORT
def_bool y
config TRACE_IRQFLAGS_SUPPORT
def_bool y
config HARDIRQS_SW_RESEND
def_bool y
config GENERIC_IRQ_PROBE
def_bool y
config RWSEM_GENERIC_SPINLOCK
def_bool y
config GENERIC_TIME
def_bool y
config RWSEM_XCHGADD_ALGORITHM
def_bool n
config ARCH_HAS_ILOG2_U32
def_bool n
config ARCH_HAS_ILOG2_U64
def_bool n
config GENERIC_HWEIGHT
def_bool y
config GENERIC_CALIBRATE_DELAY
def_bool y
config GENERIC_BUG
def_bool y
depends on BUG
source "init/Kconfig"
menu "System Type and features"
config SUBARCH_AVR32B
bool
config MMU
bool
config PERFORMANCE_COUNTERS
bool
config PLATFORM_AT32AP
bool
select SUBARCH_AVR32B
select MMU
select PERFORMANCE_COUNTERS
select HAVE_GPIO_LIB
#
# CPU types
#
# AP7000 derivatives
config CPU_AT32AP700X
bool
select PLATFORM_AT32AP
config CPU_AT32AP7000
bool
select CPU_AT32AP700X
config CPU_AT32AP7001
bool
select CPU_AT32AP700X
config CPU_AT32AP7002
bool
select CPU_AT32AP700X
choice
prompt "AVR32 board type"
default BOARD_ATSTK1000
config BOARD_ATSTK1000
bool "ATSTK1000 evaluation board"
config BOARD_ATNGW100
bool "ATNGW100 Network Gateway"
select CPU_AT32AP7000
endchoice
if BOARD_ATSTK1000
source "arch/avr32/boards/atstk1000/Kconfig"
endif
choice
prompt "Boot loader type"
default LOADER_U_BOOT
config LOADER_U_BOOT
bool "U-Boot (or similar) bootloader"
endchoice
source "arch/avr32/mach-at32ap/Kconfig"
config LOAD_ADDRESS
hex
default 0x10000000 if LOADER_U_BOOT=y && CPU_AT32AP700X=y
config ENTRY_ADDRESS
hex
default 0x90000000 if LOADER_U_BOOT=y && CPU_AT32AP700X=y
config PHYS_OFFSET
hex
default 0x10000000 if CPU_AT32AP700X=y
source "kernel/Kconfig.preempt"
config HAVE_ARCH_BOOTMEM_NODE
def_bool n
config ARCH_HAVE_MEMORY_PRESENT
def_bool n
config NEED_NODE_MEMMAP_SIZE
def_bool n
config ARCH_FLATMEM_ENABLE
def_bool y
config ARCH_DISCONTIGMEM_ENABLE
def_bool n
config ARCH_SPARSEMEM_ENABLE
def_bool n
source "mm/Kconfig"
config OWNERSHIP_TRACE
bool "Ownership trace support"
default y
help
Say Y to generate an Ownership Trace message on every context switch,
enabling Nexus-compliant debuggers to keep track of the PID of the
currently executing task.
config NMI_DEBUGGING
bool "NMI Debugging"
default n
help
Say Y here and pass the nmi_debug command-line parameter to
the kernel to turn on NMI debugging. Depending on the value
of the nmi_debug option, various pieces of information will
be dumped to the console when a Non-Maskable Interrupt
happens.
# FPU emulation goes here
source "kernel/Kconfig.hz"
config CMDLINE
string "Default kernel command line"
default ""
help
If you don't have a boot loader capable of passing a command line string
to the kernel, you may specify one here. As a minimum, you should specify
the memory size and the root device (e.g., mem=8M, root=/dev/nfs).
endmenu
menu "Power management options"
menu "CPU Frequency scaling"
source "drivers/cpufreq/Kconfig"
config CPU_FREQ_AT32AP
bool "CPU frequency driver for AT32AP"
depends on CPU_FREQ && PLATFORM_AT32AP
default n
help
This enables the CPU frequency driver for AT32AP processors.
For details, take a look in <file:Documentation/cpu-freq>.
If in doubt, say N.
endmenu
endmenu
menu "Bus options"
config PCI
bool
source "drivers/pci/Kconfig"
source "drivers/pcmcia/Kconfig"
endmenu
menu "Executable file formats"
source "fs/Kconfig.binfmt"
endmenu
source "net/Kconfig"
source "drivers/Kconfig"
source "fs/Kconfig"
source "arch/avr32/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"