kernel-fxtec-pro1x/arch/avr32/mach-at32ap/Kconfig
Haavard Skinnemoen e3e7d8d4ea [AVR32] Make I/O access macros work with external devices
Fix the I/O access macros so that they work with externally connected
devices accessed in little-endian mode over any bus width:

* Use a set of macros to define I/O port- and memory operations
  borrowed from MIPS.
* Allow subarchitecture to specify address- and data-mangling
* Implement at32ap-specific port mangling (with build-time
  configurable bus width. Only one bus width at a time supported
  for now.)
* Rewrite iowriteN and friends to use write[bwl] and friends
  (not the __raw counterparts.)

This has been tested using pata_pcmcia to access a CompactFlash card
connected to the EBI (16-bit bus width.)

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-04-27 13:44:14 +02:00

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if PLATFORM_AT32AP
menu "Atmel AVR32 AP options"
choice
prompt "AT32AP7000 static memory bus width"
depends on CPU_AT32AP7000
default AP7000_16_BIT_SMC
help
Define the width of the AP7000 external static memory interface.
This is used to determine how to mangle the address and/or data
when doing little-endian port access.
The current code can only support a single external memory bus
width for all chip selects, excluding the flash (which is using
raw access and is thus not affected by any of this.)
config AP7000_32_BIT_SMC
bool "32 bit"
config AP7000_16_BIT_SMC
bool "16 bit"
config AP7000_8_BIT_SMC
bool "8 bit"
endchoice
endmenu
endif # PLATFORM_AT32AP