gpiolib: avr32 at32ap platform support
commitb98348bdd08dc4ec11828aa98a78edde15c53cfa
authorDavid Brownell <dbrownell@users.sourceforge.net>
Tue, 5 Feb 2008 06:28:28 +0000 (4 22:28 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 5 Feb 2008 17:44:13 +0000 (5 09:44 -0800)
treea0b4618bf8ec436581f29080c32ddb07e7489bd0
parentb72540c30c9c8c2c3f17cae29962cfb50fbe166a
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>
arch/avr32/Kconfig
arch/avr32/mach-at32ap/pio.c
arch/avr32/mach-at32ap/pio.h
include/asm-avr32/arch-at32ap/at32ap700x.h
include/asm-avr32/arch-at32ap/gpio.h
include/asm-avr32/arch-at32ap/irq.h