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alistair23-linux/include/asm-arm
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David Brownell 28735a7253 [PATCH] gpio_direction_output() needs an initial value 
It's been pointed out that output GPIOs should have an initial value, to
avoid signal glitching ...  among other things, it can be some time before
a driver is ready.  This patch corrects that oversight, fixing

 - documentation
 - platforms supporting the GPIO interface
 - users of that call (just one for now, others are pending)

There's only one user of this call for now since most platforms are still
using non-generic GPIO setup code, which in most cases already couples the
initial value with its "set output mode" request.

Note that most platforms are clear about the hardware letting the output
value be set before the pin direction is changed, but the s3c241x docs are
vague on that topic ...  so those chips might not avoid the glitches.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Andrew Victor <andrew@sanpeople.com>
Acked-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-16 19:25:04 -07:00
..
arch-aaec2000 [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-at91 [PATCH] gpio_direction_output() needs an initial value 2007-03-16 19:25:04 -07:00
arch-cl7500 [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-clps711x [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-ebsa110 [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-ebsa285 [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-ep93xx [ARM] Merge remaining IOP code 2007-02-20 10:52:43 +00:00
arch-h720x [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-imx Merge ARM fixes 2007-02-20 19:13:30 +00:00
arch-integrator [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-iop13xx [ARM] 4187/1: iop: unify time implementation across iop32x, iop33x, and iop13xx 2007-02-17 15:05:40 +00:00
arch-iop32x [ARM] 4187/1: iop: unify time implementation across iop32x, iop33x, and iop13xx 2007-02-17 15:05:40 +00:00
arch-iop33x [ARM] 4187/1: iop: unify time implementation across iop32x, iop33x, and iop13xx 2007-02-17 15:05:40 +00:00
arch-ixp4xx [ARM] 4263/1: fix IXP4XX_NPE[ABC]_BASE_VIRT address 2007-03-12 16:49:38 +00:00
arch-ixp23xx Merge ARM fixes 2007-02-20 19:13:30 +00:00
arch-ixp2000 [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-l7200 [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-lh7a40x [ARM] 4248/1: lh7a40x: fix missing definitions for get_irqnr_preamble 2007-03-08 13:33:57 +00:00
arch-netx [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-ns9xxx [ARM] 4234/1: Introduce get_irqnr_preamble and arch_ret_to_user for ns9xxx. 2007-02-25 16:41:43 +00:00
arch-omap [PATCH] gpio_direction_output() needs an initial value 2007-03-16 19:25:04 -07:00
arch-pnx4008 [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-pxa [PATCH] gpio_direction_output() needs an initial value 2007-03-16 19:25:04 -07:00
arch-realview [ARM] Merge remaining IOP code 2007-02-20 10:52:43 +00:00
arch-rpc [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-s3c2410 [PATCH] gpio_direction_output() needs an initial value 2007-03-16 19:25:04 -07:00
arch-sa1100 [PATCH] gpio_direction_output() needs an initial value 2007-03-16 19:25:04 -07:00
arch-shark [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
arch-versatile [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user 2007-02-17 15:04:29 +00:00
hardware [PATCH] gpio_keys driver shouldn't be ARM-specific 2007-03-05 07:57:51 -08:00
mach [ARM] Remove compatibility layer for ARM irqs 2006-11-30 12:24:47 +00:00
plat-s3c24xx [ARM] 4220/1: S3C24XX: DMA system initialised from sysdev 2007-02-17 15:00:34 +00:00
.gitignore [ARM] 4216/1: add .gitignore entries for ARM specific files 2007-02-17 11:26:41 +00:00
a.out.h
assembler.h [ARM] Remove MODE_(SVC|IRQ|FIQ|USR) and DEFAULT_FIQ 2006-06-25 12:01:48 +01:00
atomic.h [ARM] 3810/1: switch atomic helpers over to raw_local_irq_{save,restore} 2006-09-25 10:25:24 +01:00
auxvec.h
bitops.h [ARM] 3852/1: convert atomic bitops and __xchg over to raw_local_irq_{save,restore} 2006-09-25 10:34:03 +01:00
bug.h [ARM] 3983/2: remove unused argument to __bug() 2006-12-07 22:38:09 +00:00
bugs.h [ARM] nommu: adjust headers for !MMU ARM systems 2006-06-28 17:59:45 +01:00
byteorder.h [ARM] Fix byte order macros for Thumb 2006-06-19 15:35:36 +01:00
cache.h
cacheflush.h [ARM] Convert DMA cache handling to take const void * args 2007-02-08 14:49:44 +00:00
checksum.h [ARM] Improve csum_fold, cleanup csum_tcpudp_magic() 2007-02-06 16:46:46 +00:00
cnt32_to_63.h [ARM] 3978/1: macro to provide a 63-bit value from a 32-bit hardware counter 2006-12-07 16:06:45 +00:00
cpu-multi32.h [ARM] Unuse another Linux PTE bit 2006-12-13 14:34:43 +00:00
cpu-single.h [ARM] Unuse another Linux PTE bit 2006-12-13 14:34:43 +00:00
cpu.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
cputime.h
current.h
delay.h
device.h [ARM] Add a reference from struct device to the dma bounce info 2007-02-12 10:28:24 +00:00
div64.h [ARM] 3611/4: optimize do_div() when divisor is constant 2006-12-07 16:06:09 +00:00
dma-mapping.h Merge AT91, EP93xx, General devel, PXA, S3C, V6+ and Xscale trees 2007-02-17 20:09:53 +00:00
dma.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
domain.h [ARM] 4127/1: Flush the prefetch buffer after changing the DACR 2007-02-08 14:49:18 +00:00
dyntick.h [ARM] 3692/1: ARM: coswitch irq handling to the generic implementation 2006-07-01 22:30:09 +01:00
ecard.h
elf.h [ARM] 4054/1: ep93xx: add HWCAP_CRUNCH 2006-12-18 00:14:54 +00:00
emergency-restart.h
errno.h
fcntl.h
fiq.h
flat.h [ARM] 4074/1: Flat loader stack alignment 2006-12-30 17:05:08 +00:00
floppy.h [PATCH] ARM: fixup irqflags breakage after ARM genirq merge 2006-07-02 17:29:22 -07:00
fpstate.h [ARM] 4111/1: Allow VFP to work with thread migration on SMP 2007-01-25 16:35:29 +00:00
futex.h
glue.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
gpio.h [PATCH] GPIO core 2007-02-12 09:48:34 -08:00
hardirq.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
hardware.h
hw_irq.h [PATCH] misc arm pt_regs fixes 2006-10-08 12:32:36 -07:00
ide.h
io.h [PATCH] kill eth_io_copy_and_sum() 2007-02-09 09:14:07 -08:00
ioctl.h
ioctls.h
ipc.h
ipcbuf.h
irq.h [ARM] 4073/1: Prevent s3c24xx drivers from including asm/arch/hardware.h and asm/arch/irqs.h 2006-12-30 17:05:07 +00:00
irq_regs.h Initial blind fixup for arm for irq changes 2006-10-06 10:59:54 -07:00
irqflags.h [ARM] Add ARM irqtrace support 2006-09-20 14:58:35 +01:00
Kbuild Add empty Kbuild files for 'make headers_install' in remaining arches. 2006-06-18 12:58:53 +01:00
kexec.h [ARM] 4137/1: Add kexec support 2007-02-16 14:37:06 +00:00
kmap_types.h
leds.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
limits.h
linkage.h
local.h
locks.h
mc146818rtc.h
memory.h [ARM] Clean up discontigmem support 2006-11-30 22:52:28 +00:00
mman.h
mmu.h [ARM] Add section support to ioremap 2006-06-29 22:14:30 +01:00
mmu_context.h [ARM] Add section support to ioremap 2006-06-29 22:14:30 +01:00
mmzone.h
module.h
msgbuf.h
mtd-xip.h
mutex.h
namei.h
nwflash.h
page-nommu.h [ARM] nommu: adjust headers for !MMU ARM systems 2006-06-28 17:59:45 +01:00
page.h Merge master.kernel.org:/pub/scm/linux/kernel/git/tmlind/linux-omap-upstream into devel 2006-09-27 19:57:54 +01:00
param.h
parport.h
pci.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
percpu.h
pgalloc.h [ARM] nommu: adjust headers for !MMU ARM systems 2006-06-28 17:59:45 +01:00
pgtable-hwdef.h [ARM] Set bit 4 on section mappings correctly depending on CPU 2006-06-29 18:24:21 +01:00
pgtable-nommu.h [ARM] Fix nommu build 2006-11-30 13:53:54 +00:00
pgtable.h [ARM] 4158/1: Fix user page protection macros 2007-02-11 17:06:17 +00:00
poll.h
posix_types.h
proc-fns.h [ARM] nommu: add ARM946E-S core support 2006-09-27 17:39:19 +01:00
processor.h [ARM] 4016/1: prefetch macro is wrong wrt gcc's "delete-null-pointer-checks" 2006-12-13 18:30:20 +00:00
procinfo.h [ARM] Move HWCAP_* definitions to asm/elf.h 2006-11-30 12:24:46 +00:00
ptrace.h [ARM] 3665/1: crunch: add ptrace support 2006-06-28 17:55:00 +01:00
resource.h
rtc.h
scatterlist.h
sections.h
segment.h
semaphore-helper.h
semaphore.h
sembuf.h
serial.h
setup.h [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h [PATCH] ARM: fixup irqflags breakage after ARM genirq merge 2006-07-02 17:29:22 -07:00
sizes.h
smp.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
socket.h [AF_UNIX]: Datagram getpeersec 2006-06-29 16:58:06 -07:00
sockios.h
spinlock.h [PATCH] Remove the last reference to rwlock_is_locked() macro. 2007-02-11 10:51:34 -08:00
spinlock_types.h
stat.h
statfs.h
string.h
suspend.h
system.h [ARM] 4241/1: Define mb() as compiler barrier on a uniprocessor system 2007-03-02 11:59:00 +00:00
termbits.h [PATCH] tty: preparatory structures for termios revamp 2006-12-08 08:28:56 -08:00
termios.h [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
therm.h
thread_info.h [PATCH] PM: Fix SMP races in the freezer 2006-12-13 09:05:49 -08:00
thread_notify.h [ARM] Add thread_notify infrastructure 2006-06-22 10:24:18 +01:00
timex.h
tlb.h
tlbflush.h [ARM] 4129/1: Add barriers after the TLB operations 2007-02-08 14:49:27 +00:00
topology.h
traps.h
types.h
uaccess.h Storage class should be before const qualifier 2007-02-17 20:11:19 +01:00
ucontext.h [ARM] 3664/1: crunch: add signal frame save/restore 2006-06-28 17:54:59 +01:00
unaligned.h [ARM] 3849/1: fix get_unaligned() for gcc >= 4.1 2006-09-25 10:34:00 +01:00
unistd.h [ARM] 4137/1: Add kexec support 2007-02-16 14:37:06 +00:00
user.h
vfp.h
vfpmacros.h [ARM] 3472/1: Use the D variants of FLDMIA/FSTMIA on ARMv6 2006-04-10 21:32:42 +01:00
vga.h [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use 2006-06-22 15:05:58 -07:00
xor.h