Commit Graph

29 Commits

Author SHA1 Message Date
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
Philipp Zabel 5b7e42b2d3 [PATCH] GPIO API: SA1100 wrapper cleanup
Based on the discussion last december (http://lkml.org/lkml/2006/12/20/241),
this patch
  - adds gpio_direction_input/output functions to
    generic.c instead of making them inline,
  - fixes comment and includes and uses inline functions
    instead of macros in gpio.h

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-20 17:10:16 -08:00
Russell King 5a84d15906 Merge ARM fixes 2007-02-20 19:13:30 +00:00
Dan Williams f80dff9da0 [ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user
get_irqnr_preamble allows machines to take some action before entering the
get_irqnr_and_base loop.  On iop we enable cp6 access.

arch_ret_to_user is added to the userspace return path to allow individual
architectures to take actions, like disabling coprocessor access, before
the final return to userspace.

Per Nicolas Pitre's note, there is no need to cp_wait on the return to user
as the latency to return is sufficient.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-17 15:04:29 +00:00
Philipp Zabel 920fe7a8d0 [PATCH] SA1100 GPIO wrappers
Arch-neutral GPIO calls for SA-1100.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:34 -08:00
Russell King 6705cda24f [ARM] Merge individual ARM sub-trees
Merge:
 Atmel AT91RM9200 and AT91SAM9260 changes
 General ARM developments
 Disconfiguous memory cleanups
 64-bit/32-bit division and sched_clock extension patches
 EP93xx support changes
 IOP support changes

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-07 23:07:26 +00:00
Russell King b7dc96d753 [ARM] Clean up discontigmem support
Most architectures have fairly simple discontiguous memory - a
simple set of successive regions each containing some memory.
These can be described simply as a log2 of their maximum size,
along with the base address of the first region and the number
of regions.

The base address is already described by PHYS_PFN_OFFSET, and
the number of regions via the MAX_NUMNODES and the number of
online nodes.

If we then supply the log2 of their maximum size, all the other
discontigmem macros can move into generic code.

There is one exception: lh7a40x seems to have a more complicated
setup; this is left alone.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-30 22:52:28 +00:00
Kristoffer Ericson 5cd372e170 [ARM] 3936/1: [Jornada7xx] - No use for jornada720.h
* We don't need this header anymore - there is no data we need to share this way. FB driver gets this data through a resources structure. MCU Driver api will go to a jornada720_mcu.h file.

Signed-off-by: Filip Zyzniewski <filip.zyzniewski@tefnet.pl>
Signed-off-by: Kristoffer Ericson <Kristoffer_e1@hotmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-30 12:57:48 +00:00
Kristoffer Ericson 8e25b84e76 [ARM] 3890/1: [Jornada7xx] Addition of MCU commands into jornada720.h
This adds relevant MCU commands for the j7xx chipset.

Signed-off-by: Kristoffer Ericson <Kristoffer_e1@hotmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-10-14 16:02:00 +01:00
Uwe Zeisberger f30c226954 fix file specification in comments
Many files include the filename at the beginning, serveral used a wrong one.

Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03 23:01:26 +02:00
Andrew Victor 52e3e772a0 [ARM] 3631/1: Remove legacy __mem_isa() definitions
Patch from Andrew Victor

Remove the remaining legacy __mem_isa() definitions for the ARM
platforms.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-24 10:34:48 +01:00
David Woodhouse 62c4f0a2d5 Don't include linux/config.h from anywhere else in include/
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-04-26 12:56:16 +01:00
Russell King 74d02fb954 [ARM] Move FLUSH_BASE macros to asm/arch/memory.h
FLUSH_BASE must be visible to arch/arm/mm/init.c in order for the
memory region to be setup.  Move these definitions from
asm-arm/arch-*/hardware.h into asm-arm/arch-*/memory.h where mm
stuff can see them.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-04-07 13:22:21 +01:00
Russell King a081568d70 [ARM] Fix decompressor serial IO to give CRLF not LFCR
As per the corresponding change to the serial drivers, arrange
for ARM decompressors to give CRLF.  Move the common putstr code
into misc.c such that machines only need to supply "putc" and
"flush" functions.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-28 10:24:33 +01:00
Russell King 22398f57b6 [ARM] Fix SA1100 debug-macros.S
This needs asm/hardware.h - include it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 22:05:55 +00:00
Russell King f80658137f [ARM] Move HZ definition into Kconfig
Move the HZ definition into Kconfig, and set appropriate defaults
for platforms.  Remove mostly empty asm/arch/param.h include file.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 22:05:45 +00:00
Russell King 95ba9fb06b [ARM] Remove definition of MAX_DMA_CHANNELS to zero
Since we now only build arch/arm/kernel/dma.c on machine types
which set ISA_DMA_API, we don't need to define MAX_DMA_CHANNELS
to 0 to indicate this - this definition becomes superfluous.
Remove it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-04 15:51:51 +00:00
Russell King d4c6fc9976 [ARM] Move common definition of MAX_DMA_ADDRESS to asm/dma.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-04 15:30:48 +00:00
Russell King 225937bd5d [ARM] Remove asm/hardware.h include from SA1100 io.h
Unfortunately, we have a symbol clash between the SA-1100 header and
some drivers.  Since everywhere which needs SA1100 specifics includes
asm/hardware.h, we don't need to include it in the SA1100 io.h header.

In file included from drivers/net/wireless/wavelan_cs.p.h:459,
                 from drivers/net/wireless/wavelan_cs.c:60:
drivers/net/wireless/wavelan_cs.h:97:1: warning: "LCSR" redefined
In file included from include/asm/arch/hardware.h:56,
                 from include/asm/hardware.h:16,
                 from include/asm/arch/io.h:13,
                 from include/asm/io.h:71,
                 from drivers/net/wireless/wavelan_cs.p.h:433,
                 from drivers/net/wireless/wavelan_cs.c:60:
include/asm/arch/SA-1100.h:1907:1: warning: this is the location of the previous definition

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-25 15:33:12 +00:00
Russell King 1b12050f17 [ARM] Move zone adjustment for SA1111 on SA11x0 platforms
Unfortunately, using PAGE_SHIFT in asm/arch/memory.h is unsafe, and we
can't include asm/page.h into this file because then we have a circular
dependency.  Move the offending code to arch/arm/common/sa1111.c
instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-16 17:38:40 +00:00
Nicolas Pitre f09b997999 [ARM] 3060/1: allow constants found in asm/memory.h to be used in asm code
Patch from Nicolas Pitre

This patch allows for assorted type of cleanups by letting assembly code
use the same set of defines for constant values and avoid duplicated
definitions that might not always be in sync, or that might simply be
confusing due to the different names for the same thing.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-29 21:44:55 +01:00
Russell King 674c045382 [ARM] 3/4: Remove asm/hardware.h from SA1100 io.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28 14:25:28 +01:00
Russell King 7fca0aa489 [ARM] 1/4: Move include of asm/hardware.h to asm-arm/arch-*/io.h
Including asm/hardware.h into asm/io.h can cause #define clashes
between platform specific definitions and driver local definitions.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28 10:20:25 +01:00
Russell King fea2efe3bb [ARM] Remove PFN_TO_NID for !DISCONTIGMEM
Platform classes need not define PFN_TO_NID when DISCONTIGMEM is
not selected.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-15 12:30:11 +01:00
Nicolas Pitre 61c8c158c8 [ARM] 2892/1: remove gcc workaround for direct access to absolute memory addresses
Patch from Nicolas Pitre

It used to make a difference in the gcc-2.95 era.  However these days
modern gcc apparently got better at not being influenced by such constructs
(which is good in general) and therefore such workaround is of no real
advantage anymore.
The good news is that gcc (from version 4.1.0) is now fixed with
regards to the defficiency this workaround was trying to address.
For those interested the patch can easily be backported to older gcc
versions and can be found here:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/arm/arm.c.diff?r1=1.476&r2=1.478
and also here:
http://savannah.gnu.org/cgi-bin/viewcvs/gcc/gcc/gcc/config/arm/arm.c.diff?r1=text&tr1=1.476&r2=text&tr2=1.478&diff_format=u

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-08 23:07:40 +01:00
Russell King 323cdfc191 [MFD] Add SA11x0 MCP platform device support
Add platform device data for the SA11x0 MCP device.  This allows
platforms to customise the configuration of the SA11x0 MCP device
according to their needs.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-08-18 10:10:46 +01:00
Thomas Gleixner 97f927a4d7 [MTD] XIP cleanup
Move the architecture dependend code into include/asm/mtd-xip.h

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-07-07 16:50:16 +02:00
Russell King 5c3073e691 [PATCH] ARM: cleanup vmalloc start/offset macros
VMALLOC_START and VMALLOC_OFFSET are common between all ARM
machine classes.  Move them into include/asm-arm/pgtable.h,
but allow a machine class to override them if required.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-05-03 12:20:29 +01:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00