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Commit Graph

555 Commits

Author SHA1 Message Date
Ingo Molnar
6e15cf0486 Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2
Conflicts:
	arch/parisc/kernel/irq.c
	arch/x86/include/asm/fixmap_64.h
	arch/x86/include/asm/setup.h
	kernel/irq/handle.c

Semantic merge:
        arch/x86/include/asm/fixmap.h

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-27 17:28:43 +01:00
Hans-Christian Egtvedt
2f47c8c555 avr32: at32ap700x: setup DMA for AC97C in the machine code
This patch will adjust the setup the DMA controller for the AC97
Controller in the at32ap700x machine code. This setup matches the new
ALSA driver for the AC97C.

The struct ac97c_platform_data has been moved into its own header file
located in the sound include path.

Tested on ATSTK1006 + ATSTK1000.

This patch will setup the AC97 controller properly for the adjusted
machine code. Both EVKLCD10x and Hammerhead board has been updated.

Tested on EVKLCD10x, and copied to Hammerhead board.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
[haavard.skinnemoen@atmel.com: fold with board code update]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-27 16:15:39 +01:00
Hans-Christian Egtvedt
6b0c935142 avr32: at32ap700x: setup DMA for ABDAC in the machine code
This patch will adjust the setup the DMA controller for the Audio
Bistream DAC in the at32ap700x machine code. This setup matches the new
ALSA driver for the ABDAC.

Tested on ATSTK1006 + ATSTK1000.

This patch will setup the needed platform data for the Audio Bistream
DAC used by the Favr-32 board.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
[haavard.skinnemoen@atmel.com: fold board code update]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-27 16:15:39 +01:00
Haavard Skinnemoen
b92efa9abf Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into avr32-arch 2009-03-27 16:14:38 +01:00
Jonas Larsson
a16fffdd8e Add Merisc board support
Merisc is the family name for a range of AVR32-based boards.

The boards are designed to be used in a man-machine interfacing
environment, utilizing a touch-based graphical user interface. They host
a vast range of I/O peripherals as well as a large SDRAM & Flash memory
bank.

For more information see: http://www.martinsson.se/merisc

Signed-off-by: Jonas Larsson <jonas.larsson@martinsson.se>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-27 15:02:34 +01:00
Linus Torvalds
ba1eb95cf3 Merge branch 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)
  x86: headers cleanup - setup.h
  emu101k1.h: fix duplicate include of <linux/types.h>
  compiler-gcc4: conditionalize #error on __KERNEL__
  remove __KERNEL_STRICT_NAMES
  make netfilter use strict integer types
  make drm headers use strict integer types
  make MTD headers use strict integer types
  make most exported headers use strict integer types
  make exported headers use strict posix types
  unconditionally include asm/types.h from linux/types.h
  make linux/types.h as assembly safe
  Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h
  headers_check fix cleanup: linux/reiserfs_fs.h
  headers_check fix cleanup: linux/nubus.h
  headers_check fix cleanup: linux/coda_psdev.h
  headers_check fix: x86, setup.h
  headers_check fix: x86, prctl.h
  headers_check fix: linux/reinserfs_fs.h
  headers_check fix: linux/socket.h
  headers_check fix: linux/nubus.h
  ...

Manually fix trivial conflicts in:
	include/linux/netfilter/xt_limit.h
	include/linux/netfilter/xt_statistic.h
2009-03-26 16:11:41 -07:00
Linus Torvalds
a8416961d3 Merge branch 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (32 commits)
  x86: disable __do_IRQ support
  sparseirq, powerpc/cell: fix unused variable warning in interrupt.c
  genirq: deprecate obsolete typedefs and defines
  genirq: deprecate __do_IRQ
  genirq: add doc to struct irqaction
  genirq: use kzalloc instead of explicit zero initialization
  genirq: make irqreturn_t an enum
  genirq: remove redundant if condition
  genirq: remove unused hw_irq_controller typedef
  irq: export remove_irq() and setup_irq() symbols
  irq: match remove_irq() args with setup_irq()
  irq: add remove_irq() for freeing of setup_irq() irqs
  genirq: assert that irq handlers are indeed running in hardirq context
  irq: name 'p' variables a bit better
  irq: further clean up the free_irq() code flow
  irq: refactor and clean up the free_irq() code flow
  irq: clean up manage.c
  irq: use GFP_KERNEL for action allocation in request_irq()
  kernel/irq: fix sparse warning: make symbol static
  irq: optimize init_kstat_irqs/init_copy_kstat_irqs
  ...
2009-03-26 16:06:50 -07:00
David S. Miller
08abe18af1 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
	drivers/net/wimax/i2400m/usb-notif.c
2009-03-26 15:23:24 -07:00
Linus Torvalds
61a9dc26d3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
  avr32: remove duplicated #include
  avr32: fix out-of-range rjmp instruction on large kernels
  avr32: Fix out-of-range rcalls in large kernels
2009-03-26 11:05:58 -07:00
Ingo Molnar
5a54bd1307 Merge commit 'v2.6.29' into core/header-fixes 2009-03-26 18:29:40 +01:00
Hans-Christian Egtvedt
9477ab2b2a avr32: use gpio_is_valid() to check USBA vbus_pin I/O line
This patch will use gpio_is_valid() to check the vbus_pin I/O line.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-26 14:59:01 +01:00
Hans-Christian Egtvedt
b2a49ed008 avr32: fix timing LCD parameters for EVKLCD10X boards
This patch adjusts the timing parameters for the Kyocera LCD panels
connected on the EVKLCD10X addon boards.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-26 14:58:58 +01:00
Hans-Christian Egtvedt
30754acf29 avr32: use GPIO line PB15 on EVKLCD10x boards for backlight
The PB15 GPIO line is used to control the enable and disable signal for
the backlight regulator on EVKLCD10x boards. This patch hands the I/O
line over to the LCDC driver, which will control when to enable and
disable the backlight.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
[haavard.skinnemoen@atmel.com: reverted ac97c change]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-26 14:58:28 +01:00
Hans-Christian Egtvedt
fe272b5bd1 avr32: configure MCI detect and write protect pins for EVKLCD10x boards
This patch removes the special handling of MCI platform data for
EVKLCD10x boards. This is now possible since the pin mask for the LCD
controller is no longer reserving the I/O lines used for MCI card
detection and write protect.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-26 14:49:40 +01:00
Hans-Christian Egtvedt
ecb1bd894e avr32: set pin mask to alternative 18 bpp for EVKLCD10x boards
This patch will set the pin mask to alternative 18 bits per pixel output
for EVKLCD10x boards.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-26 14:49:39 +01:00
Hans-Christian Egtvedt
2ae6d5d8f0 avr32: add pin mask for 18-bit color on the LCD controller
This patch adds two defines for setting a pin mask for 18-bit LCD panels
connected to the LCD controller. One mask for primary output and one
mask for alternative output.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-26 14:49:39 +01:00
Hans-Christian Egtvedt
ef41902190 avr32: fix 15-bit LCDC pin mask to use MSB lines
This patch corrects the 15-bit LCDC pin mask definitions to select the
five upper lines in each color byte from the LCDC data output. When
reducing the color depth the LCDC will start filling MSB and downwards.

Also only enable 5 bits per color as the define indicates.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-26 14:49:39 +01:00
Huang Weiyi
5201b0a47b avr32: remove duplicated #include
Remove duplicated #include in arch/avr32/boards/hammerhead/flash.c.

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Acked-by: Alex Raimondi <mailinglist@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-03-24 09:16:51 +01:00
Ingo Molnar
edb35028e4 Merge branches 'irq/genirq' and 'linus' into irq/core 2009-03-16 09:20:13 +01:00
Ingo Molnar
f0ef039851 Merge branch 'x86/core' into tracing/textedit
Conflicts:
	arch/x86/Kconfig
	block/blktrace.c
	kernel/irq/handle.c

Semantic conflict:
	kernel/trace/blktrace.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-06 16:45:01 +01:00
Uwe Kleine-Koenig
c79a61f557 tracing: make CALLER_ADDRx overwriteable
The current definition of CALLER_ADDRx isn't suitable for all platforms.
E.g. for ARM __builtin_return_address(N) doesn't work for N > 0 and
AFAIK for powerpc there are no frame pointers needed to have a working
__builtin_return_address.  This patch allows defining the CALLER_ADDRx
macros in <asm/ftrace.h> and let these take precedence.

Because now <asm/ftrace.h> is included unconditionally in
<linux/ftrace.h> all archs that don't already had this include get an
empty one for free.

Signed-off-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2009-03-02 16:49:37 -05:00
Ingo Molnar
0edcf8d692 Merge branch 'tj-percpu' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc into core/percpu
Conflicts:
	arch/x86/include/asm/pgtable.h
2009-02-24 21:52:45 +01:00
David S. Miller
e70049b9e7 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/ 2009-02-24 03:50:29 -08:00
Tejun Heo
c132937556 bootmem: clean up arch-specific bootmem wrapping
Impact: cleaner and consistent bootmem wrapping

By setting CONFIG_HAVE_ARCH_BOOTMEM_NODE, archs can define
arch-specific wrappers for bootmem allocation.  However, this is done
a bit strangely in that only the high level convenience macros can be
changed while lower level, but still exported, interface functions
can't be wrapped.  This not only is messy but also leads to strange
situation where alloc_bootmem() does what the arch wants it to do but
the equivalent __alloc_bootmem() call doesn't although they should be
able to be used interchangeably.

This patch updates bootmem such that archs can override / wrap the
backend function - alloc_bootmem_core() instead of the highlevel
interface functions to allow simpler and consistent wrapping.  Also,
HAVE_ARCH_BOOTMEM_NODE is renamed to HAVE_ARCH_BOOTMEM.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Johannes Weiner <hannes@saeurebad.de>
2009-02-24 11:57:20 +09:00
Ingo Molnar
fc6fc7f1b1 Merge branch 'linus' into x86/apic
Conflicts:
	arch/x86/mach-default/setup.c

Semantic conflict resolution:
	arch/x86/kernel/setup.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-22 20:05:19 +01:00
Ingo Molnar
64b36ca7f4 Merge branches 'tracing/function-graph-tracer' and 'linus' into tracing/core 2009-02-20 11:35:57 +01:00
Gregory CLEMENT
744f659272 [ARM] 5400/1: Add support for inverted rdy_busy pin for Atmel nand device controller
Add support for inverted rdy_busy pin for Atmel nand device controller
It will fix building error on NeoCore926 board.

Acked-by: Andrew Victor <linux@maxim.org.za>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Gregory CLEMENT <gclement@adeneo.adetelgroup.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-16 21:40:39 +00:00
Patrick Ohly
cb9eff0978 net: new user space API for time stamping of incoming and outgoing packets
User space can request hardware and/or software time stamping.
Reporting of the result(s) via a new control message is enabled
separately for each field in the message because some of the
fields may require additional computation and thus cause overhead.
User space can tell the different kinds of time stamps apart
and choose what suits its needs.

When a TX timestamp operation is requested, the TX skb will be cloned
and the clone will be time stamped (in hardware or software) and added
to the socket error queue of the skb, if the skb has a socket
associated with it.

The actual TX timestamp will reach userspace as a RX timestamp on the
cloned packet. If timestamping is requested and no timestamping is
done in the device driver (potentially this may use hardware
timestamping), it will be done in software after the device's
start_hard_xmit routine.

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-15 22:43:33 -08:00
Ingo Molnar
8f8573ae9f Merge branches 'irq/genirq', 'irq/sparseirq' and 'irq/urgent' into irq/core 2009-02-13 11:57:18 +01:00
Steven Rostedt
5a5fb7dbe8 preempt-count: force hardirq-count to max of 10
To add a bit in the preempt_count to be set when in NMI context, we
found that some archs did not have enough bits to spare. This is
due to the hardirq_count being a mask that can hold NR_IRQS.

Some archs allow for over 16000 IRQs, and that would require a mask
of 14 bits. The sofitrq mask is 8 bits and the preempt disable mask
is also 8 bits.  The PREEMP_ACTIVE bit is bit 30, and bit 31 would
make the preempt_count (which is type int) a negative number.
A negative preempt_count is a sign of failure.

Add them up 14+8+8+1+1 you get 32 bits. No room for the NMI bit.

But the hardirq_count is to track the number of nested IRQs, not
the number of total IRQs.  This originally took the paranoid approach
of setting the max nesting to NR_IRQS. But when we have archs with
over 1000 IRQs, it is not practical to think they will ever all
nest on a single CPU. Not to mention that this would most definitely
cause a stack overflow.

This patch sets a max of 10 bits to be used for IRQ nesting.
I did a 'git grep HARDIRQ' to examine all users of HARDIRQ_BITS and
HARDIRQ_MASK, and found that making it a max of 10 would not hurt
anyone. I did find that the m68k expected it to be 8 bits, so
I allow for the archs to set the number to be less than 10.

I removed the setting of HARDIRQ_BITS from the archs that set it
to more than 10. This includes ALPHA, ia64 and avr32.

This will always allow room for the NMI bit, and if we need to allow
for NMI nesting, we have 4 bits to play with.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2009-02-12 11:19:05 -05:00
Jaswinder Singh Rajput
1c6ce704f1 headers_check fix: avr32, swab.h
fix the following 'make headers_check' warnings:

  usr/include/asm-avr32/swab.h:7: include of <linux/types.h> is preferred over <asm/types.h>
  usr/include/asm-avr32/swab.h:22: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-02-01 11:01:23 +05:30
Jean Delvare
dd7f8dbe2b eeprom: More consistent symbol names
Now that all EEPROM drivers live in the same place, let's harmonize
their symbol names.

Also fix eeprom's dependencies, it definitely needs sysfs, and is no
longer experimental after many years in the kernel tree.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
2009-01-26 21:19:57 +01:00
Haavard Skinnemoen
61f3632fdc avr32: fix out-of-range rjmp instruction on large kernels
Use .subsection to place fixups closer to their jump targets. This
increases the maximum size of the kernel before we get link errors
significantly.

The problem here is that we don't have a "call"-ish pseudo-instruction
to use instead of rjmp...we could add one, but that means we'll have to
wait for a new toolchain release, wait until we're fairly sure most
people are using it, etc...

As an added bonus, it should decrease the RAM footprint slightly,
though it might pollute the icache a bit more.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-16 09:38:05 +01:00
Ben Nizette
8d29b7b9f8 avr32: Fix out-of-range rcalls in large kernels
Replace handcoded rcall instructions with the call pseudo-instruction.
For kernels too far over 1MB the rcall instruction can't reach and
linking will fail.  We already call the final linker with --relax which
converts call pseudo-instructions to the right things anyway.

This fixes

arch/avr32/kernel/built-in.o: In function `syscall_exit_work':
(.ex.text+0x198): relocation truncated to fit: R_AVR32_22H_PCREL against symbol `schedule' defined in .sched.text section in kernel/built-in.o
arch/avr32/kernel/built-in.o: In function `fault_exit_work':
(.ex.text+0x3b6): relocation truncated to fit: R_AVR32_22H_PCREL against symbol `schedule' defined in .sched.text section in kernel/built-in.o

But I'm still left with

arch/avr32/kernel/built-in.o:(.fixup+0x2): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+45a
arch/avr32/kernel/built-in.o:(.fixup+0x8): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+8ea
arch/avr32/kernel/built-in.o:(.fixup+0xe): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+abe
arch/avr32/kernel/built-in.o:(.fixup+0x14): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+ac8
arch/avr32/kernel/built-in.o:(.fixup+0x1a): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+ad2
arch/avr32/kernel/built-in.o:(.fixup+0x20): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+adc
arch/avr32/kernel/built-in.o:(.fixup+0x26): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+ae6
arch/avr32/kernel/built-in.o:(.fixup+0x2c): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+af0
arch/avr32/kernel/built-in.o:(.fixup+0x32): additional relocation overflows omitted from the output

These are caused by a similar problem with 'rjmp' instructions.
Unfortunately, there's no easy fix for these at the moment since we
don't have a arbitrary-range 'jmp' instruction similar to 'call'.

Signed-off-by: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-16 09:31:57 +01:00
Harvey Harrison
74d96f0186 byteorder: make swab.h include asm/swab.h like a regular header
Add swab.h to kbuild.asm and remove the individual entries from
each arch, mark as unifdef as some arches have some kernel-only
bits inside.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-14 19:56:50 -08:00
Yinghai Lu
0b0f0b1c2c sparseirq: use kstat_irqs_cpu on non-x86 architectures too
so we could move kstat_irqs array to irq_desc struct.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-12 20:01:12 +01:00
Linus Torvalds
d9e8a3a5b8 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (22 commits)
  ioat: fix self test for multi-channel case
  dmaengine: bump initcall level to arch_initcall
  dmaengine: advertise all channels on a device to dma_filter_fn
  dmaengine: use idr for registering dma device numbers
  dmaengine: add a release for dma class devices and dependent infrastructure
  ioat: do not perform removal actions at shutdown
  iop-adma: enable module removal
  iop-adma: kill debug BUG_ON
  iop-adma: let devm do its job, don't duplicate free
  dmaengine: kill enum dma_state_client
  dmaengine: remove 'bigref' infrastructure
  dmaengine: kill struct dma_client and supporting infrastructure
  dmaengine: replace dma_async_client_register with dmaengine_get
  atmel-mci: convert to dma_request_channel and down-level dma_slave
  dmatest: convert to dma_request_channel
  dmaengine: introduce dma_request_channel and private channels
  net_dma: convert to dma_find_channel
  dmaengine: provide a common 'issue_pending_all' implementation
  dmaengine: centralize channel allocation, introduce dma_find_channel
  dmaengine: up-level reference counting to the module level
  ...
2009-01-09 11:52:14 -08:00
Haavard Skinnemoen
183b3af66e avr32: Move syscalls.h under arch/avr32/include/asm/
This file was added to the old include/asm-avr32/ directory by mistake.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-07 11:28:15 +01:00
Haavard Skinnemoen
52435bfc66 Merge branches 'fixes', 'cleanups' and 'boards' 2009-01-07 11:05:42 +01:00
Haavard Skinnemoen
d305d8d349 avr32: Define DIE_OOPS
Whatever the hell that is. Needed to make kernel/trace/trace.c compile
again.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-07 10:40:30 +01:00
Harvey Harrison
292b4d0978 avr32: introduce asm/swab.h
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06 18:10:26 -08:00
Linus Torvalds
40d7ee5d16 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (60 commits)
  uio: make uio_info's name and version const
  UIO: Documentation for UIO ioport info handling
  UIO: Pass information about ioports to userspace (V2)
  UIO: uio_pdrv_genirq: allow custom irq_flags
  UIO: use pci_ioremap_bar() in drivers/uio
  arm: struct device - replace bus_id with dev_name(), dev_set_name()
  libata: struct device - replace bus_id with dev_name(), dev_set_name()
  avr: struct device - replace bus_id with dev_name(), dev_set_name()
  block: struct device - replace bus_id with dev_name(), dev_set_name()
  chris: struct device - replace bus_id with dev_name(), dev_set_name()
  dmi: struct device - replace bus_id with dev_name(), dev_set_name()
  gadget: struct device - replace bus_id with dev_name(), dev_set_name()
  gpio: struct device - replace bus_id with dev_name(), dev_set_name()
  gpu: struct device - replace bus_id with dev_name(), dev_set_name()
  hwmon: struct device - replace bus_id with dev_name(), dev_set_name()
  i2o: struct device - replace bus_id with dev_name(), dev_set_name()
  IA64: struct device - replace bus_id with dev_name(), dev_set_name()
  i7300_idle: struct device - replace bus_id with dev_name(), dev_set_name()
  infiniband: struct device - replace bus_id with dev_name(), dev_set_name()
  ISDN: struct device - replace bus_id with dev_name(), dev_set_name()
  ...
2009-01-06 17:02:07 -08:00
Russell King
ba84be2338 remove linux/hardirq.h from asm-generic/local.h
While looking at reducing the amount of architecture namespace pollution
in the generic kernel, I found that asm/irq.h is included in the vast
majority of compilations on ARM (around 650 files.)

Since asm/irq.h includes a sub-architecture include file on ARM, this
causes a negative impact on the ccache's ability to re-use the build
results from other sub-architectures, so we have a desire to reduce the
dependencies on asm/irq.h.

It turns out that a major cause of this is the needless include of
linux/hardirq.h into asm-generic/local.h.  The patch below removes this
include, resulting in some 250 to 300 files (around half) of the kernel
then omitting asm/irq.h.

My test builds still succeed, provided two ARM files are fixed
(arch/arm/kernel/traps.c and arch/arm/mm/fault.c) - so there may be
negative impacts for this on other architectures.

Note that x86 does not include asm/irq.h nor linux/hardirq.h in its
asm/local.h, so this patch can be viewed as bringing the generic version
into line with the x86 version.

[kosaki.motohiro@jp.fujitsu.com: add #include <linux/irqflags.h> to acpi/processor_idle.c]
[adobriyan@gmail.com: fix sparc64]
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06 15:59:13 -08:00
Matthew Wilcox
ea43546750 atomic_t: unify all arch definitions
The atomic_t type cannot currently be used in some header files because it
would create an include loop with asm/atomic.h.  Move the type definition
to linux/types.h to break the loop.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06 15:59:10 -08:00
Kay Sievers
169539c872 avr: struct device - replace bus_id with dev_name(), dev_set_name()
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-06 10:44:43 -08:00
Dan Williams
74465b4ff9 atmel-mci: convert to dma_request_channel and down-level dma_slave
dma_request_channel provides an exclusive channel, so we no longer need to
pass slave data through dmaengine.

Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-01-06 11:38:16 -07:00
Ben Nizette
30f8825c50 avr32: Remove DMATEST from defconfigs
In the defconfigs for ATNGW100 and ATSTK100[236] the DMA Test driver is
compiled as a module.  This means systems built with *_defconfig +
CONFIG_MODULES=n are unusable as the 3 dma test channels monopolise the
CPU.

I 'spose Haavard uses this module a lot but IMO it isn't really
something needed on all eval boards by default.

Signed-off-by: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-06 14:42:33 +01:00
Julia Lawall
e24500193b arch/avr32: Eliminate NULL test and memset after alloc_bootmem
As noted by Akinobu Mita in patch b1fceac2b9,
alloc_bootmem and related functions never return NULL and always return a
zeroed region of memory.  Thus a NULL test or memset after calls to these
functions is unnecessary.

This was fixed using the following semantic patch.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression E;
statement S;
@@

E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\|alloc_bootmem_node\|alloc_bootmem_low_pages_node\|alloc_bootmem_pages_node\)(...)
... when != E
(
- BUG_ON (E == NULL);
|
- if (E == NULL) S
)

@@
expression E,E1;
@@

E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\|alloc_bootmem_node\|alloc_bootmem_low_pages_node\|alloc_bootmem_pages_node\)(...)
... when != E
- memset(E,0,E1);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-06 12:39:25 +01:00
Haavard Skinnemoen
4209324a74 avr32: data param to at32_add_device_mci() must be non-NULL
at32_add_device_mci() will refuse to add the mci device if the data
parameter is NULL. Fix up the favr-32 and hammerhead boards so that this
doesn't happen.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Cc: Alex Raimondi <mailinglist@miromico.ch>
Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
2009-01-05 17:14:22 +01:00
Haavard Skinnemoen
0e49005090 Merge branch 'move-atmel-mci-h' into boards 2009-01-05 16:36:07 +01:00
Nicolas Ferre
c42aa775cc atmel-mci: move atmel-mci.h file to include/linux
Needed to use the atmel-mci driver in an architecture
independant maner.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-05 16:35:31 +01:00
Alex Raimondi
dd5e1339e5 avr32: Hammerhead board support
The Hammerhead platform is built around a AVR32 32-bit microcontroller
from Atmel.  It offers versatile peripherals, such as ethernet, usb
device, usb host etc.

The board also incooperates a power supply and is a Power over Ethernet
(PoE) Powered Device (PD).

Additonally, a Cyclone III FPGA from Altera is integrated on the board.
The FPGA is mapped into the 32-bit AVR memory bus. The FPGA offers two
DDR2 SDRAM interfaces, which will cover even the most exceptional need
of memory bandwidth. Together with the onboard video decoder the board
is ready for video processing.

This patch does include the basic support for the fpga device driver,
but not the device driver itself.

Signed-off-by: Alex Raimondi <mailinglist@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-05 15:52:04 +01:00
Haavard Skinnemoen
bc08969fe6 Merge branch 'cleanups' into boards 2009-01-05 15:51:52 +01:00
Alex Raimondi
adde42b583 avr32: Allow reserving multiple pins at once
at32_reserve_pin now takes an u32 bitmask rather than a single pin.
This allows to reserve multiple pins at once.

Remove (undocumented) SDCS (pin PE26) from reservation in board
setup code.

Signed-off-by: Alex Raimondi <raimondi@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-05 12:16:13 +01:00
Haavard Skinnemoen
45f926912f favr-32: Remove deprecated call
at32_add_system_devices() is deprecated, so remove the call to it.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-05 12:15:14 +01:00
Mark Jackson
8d3d3fb922 MIMC200: Remove deprecated call
This patch removes a call to the deprecated function
at32_add_system_devices().

Signed-off-by: Mark Jackson <mpfj@mimc.co.uk>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-05 11:35:16 +01:00
Kay Sievers
5f6333bd6e avr: struct device - replace bus_id with dev_name(), dev_set_name()
(I did not compile or test it, please let me know, or help fixing
 it, if something is wrong with the conversion)

This patch is part of a larger patch series which will remove
the "char bus_id[20]" name string from struct device. The device
name is managed in the kobject anyway, and without any size
limitation, and just needlessly copied into "struct device".

To set and read the device name dev_name(dev) and dev_set_name(dev)
must be used. If your code uses static kobjects, which it shouldn't
do, "const char *init_name" can be used to statically provide the
name the registered device should have. At registration time, the
init_name field is cleared, to enforce the use of dev_name(dev) to
access the device name at a later time.

We need to get rid of all occurrences of bus_id in the entire tree
to be able to enable the new interface. Please apply this patch,
and possibly convert any remaining remaining occurrences of bus_id.

We want to submit a patch to -next, which will remove bus_id from
"struct device", to find the remaining pieces to convert, and finally
switch over to the new api, which will remove the 20 bytes array
and does no longer have a size limitation.

Thanks,
Kay

From: Kay Sievers <kay.sievers@vrfy.org>
Subject: avr: struct device - replace bus_id with dev_name(), dev_set_name()

Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2009-01-05 10:29:35 +01:00
Linus Torvalds
7d3b56ba37 Merge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits)
  x86: setup_per_cpu_areas() cleanup
  cpumask: fix compile error when CONFIG_NR_CPUS is not defined
  cpumask: use alloc_cpumask_var_node where appropriate
  cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
  x86: use cpumask_var_t in acpi/boot.c
  x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
  sched: put back some stack hog changes that were undone in kernel/sched.c
  x86: enable cpus display of kernel_max and offlined cpus
  ia64: cpumask fix for is_affinity_mask_valid()
  cpumask: convert RCU implementations, fix
  xtensa: define __fls
  mn10300: define __fls
  m32r: define __fls
  h8300: define __fls
  frv: define __fls
  cris: define __fls
  cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
  cpumask: zero extra bits in alloc_cpumask_var_node
  cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/
  cpumask: convert mm/
  ...
2009-01-03 12:04:39 -08:00
Linus Torvalds
b840d79631 Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)
  x86: export vector_used_by_percpu_irq
  x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
  sched: nominate preferred wakeup cpu, fix
  x86: fix lguest used_vectors breakage, -v2
  x86: fix warning in arch/x86/kernel/io_apic.c
  sched: fix warning in kernel/sched.c
  sched: move test_sd_parent() to an SMP section of sched.h
  sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0
  sched: activate active load balancing in new idle cpus
  sched: bias task wakeups to preferred semi-idle packages
  sched: nominate preferred wakeup cpu
  sched: favour lower logical cpu number for sched_mc balance
  sched: framework for sched_mc/smt_power_savings=N
  sched: convert BALANCE_FOR_xx_POWER to inline functions
  x86: use possible_cpus=NUM to extend the possible cpus allowed
  x86: fix cpu_mask_to_apicid_and to include cpu_online_mask
  x86: update io_apic.c to the new cpumask code
  x86: Introduce topology_core_cpumask()/topology_thread_cpumask()
  x86: xen: use smp_call_function_many()
  x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
  ...

Fixed up trivial conflict in kernel/time/tick-sched.c manually
2009-01-02 11:44:09 -08:00
Rusty Russell
96b8d4c19d avr32: define __fls
Like fls, but can't be handed 0 and returns the bit number.

(I broke this arch in linux-next by using __fls in generic code).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-01-01 10:12:16 +10:30
Al Viro
18d8fda7c3 take init_fs to saner place
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-31 18:07:42 -05:00
Rusty Russell
33edcf133b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-12-30 08:02:35 +10:30
Haavard Skinnemoen
8983fdb508 avr32: favr-32 build fix
The favr-32 board code still refers to the old asm/arch header files
which were moved to mach/ some time ago.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-12-18 16:22:13 +01:00
Haavard Skinnemoen
de13d28e0c ATSTK1006: Fix boot from NAND flash
Enable JFFS2 write buffer support so that the kernel can access a root
filesystem in NAND flash.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-12-18 16:13:24 +01:00
Jaswinder Singh
c80ce2d52b avr32: Introducing asm/syscalls.h
Declaring arch-dependent syscalls for avr32 architecture

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-12-17 13:32:38 +01:00
Hans-Christian Egtvedt
c1892cb8d2 avr32: remove .note.gnu.build-id section when making vmlinux.bin
This patch will remove the section .note.gnu.build-id added in binutils
2.18 from the vmlinux.bin binary. Not removing this section results in a
huge multiple gigabyte binary and likewize large uImage.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-12-17 11:44:10 +01:00
Rusty Russell
320ab2b0b1 cpumask: convert struct clock_event_device to cpumask pointers.
Impact: change calling convention of existing clock_event APIs

struct clock_event_timer's cpumask field gets changed to take pointer,
as does the ->broadcast function.

Another single-patch change.  For safety, we BUG_ON() in
clockevents_register_device() if it's not set.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@elte.hu>
2008-12-13 21:20:26 +10:30
Anders Blomdell
105462632c avr32: Enable pullup on USART TX lines
Make USART initialization conform to Section 24.6.1 in the AT32AP7000 manual,
i.e. "To prevent the TXD line from falling when the USART is disabled, the use
of an internal pull up is mandatory."

Signed-off-by: Anders Blomdell <anders.blomdell@control.lth.se>
[haavard.skinnemoen@atmel.com: enable pullup on RX as well]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-24 15:45:48 +02:00
Haavard Skinnemoen
d9214556b1 Merge branches 'boards' and 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6 2008-10-23 15:24:10 +02:00
Haavard Skinnemoen
e82c6106b0 avr32: Fix GPIO initcall breakage
Add essential system devices, including GPIO controllers, automatically
at core_initcall time. This ensures that the devices are there when the
PIO driver gets initialized at postcore_initcall, fixing a bug exposed
by commit d6634db8fe "avr32: Use
platform_driver_probe for pio platform driver".

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-23 15:18:33 +02:00
Haavard Skinnemoen
e3f91ca481 avr32: Scale loops_per_jiffy when cpu frequency changes
The loops_per_jiffy variable isn't updated when cpufreq changes the CPU
frequency. This could cause udelay() and friends to produce wrong
delays.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-23 15:18:33 +02:00
Alex Raimondi
6090065663 avr32: Fix bug in LCD pin setup on port C
Bug was introduced with the new at32_select_periph function.

Signed-off-by: Alex Raimondi <mailinglist@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-23 15:18:22 +02:00
Linus Torvalds
9301975ec2 Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.

The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]).  The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.

* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
  genirq: improve include files
  intr_remapping: fix typo
  io_apic: make irq_mis_count available on 64-bit too
  genirq: fix name space collisions of nr_irqs in arch/*
  genirq: fix name space collision of nr_irqs in autoprobe.c
  genirq: use iterators for irq_desc loops
  proc: fixup irq iterator
  genirq: add reverse iterator for irq_desc
  x86: move ack_bad_irq() to irq.c
  x86: unify show_interrupts() and proc helpers
  x86: cleanup show_interrupts
  genirq: cleanup the sparseirq modifications
  genirq: remove artifacts from sparseirq removal
  genirq: revert dynarray
  genirq: remove irq_to_desc_alloc
  genirq: remove sparse irq code
  genirq: use inline function for irq_to_desc
  genirq: consolidate nr_irqs and for_each_irq_desc()
  x86: remove sparse irq from Kconfig
  genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
  ...
2008-10-20 13:23:01 -07:00
Matt Helsley
dc52ddc0e6 container freezer: implement freezer cgroup subsystem
This patch implements a new freezer subsystem in the control groups
framework.  It provides a way to stop and resume execution of all tasks in
a cgroup by writing in the cgroup filesystem.

The freezer subsystem in the container filesystem defines a file named
freezer.state.  Writing "FROZEN" to the state file will freeze all tasks
in the cgroup.  Subsequently writing "RUNNING" will unfreeze the tasks in
the cgroup.  Reading will return the current state.

* Examples of usage :

   # mkdir /containers/freezer
   # mount -t cgroup -ofreezer freezer  /containers
   # mkdir /containers/0
   # echo $some_pid > /containers/0/tasks

to get status of the freezer subsystem :

   # cat /containers/0/freezer.state
   RUNNING

to freeze all tasks in the container :

   # echo FROZEN > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   FREEZING
   # cat /containers/0/freezer.state
   FROZEN

to unfreeze all tasks in the container :

   # echo RUNNING > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   RUNNING

This is the basic mechanism which should do the right thing for user space
task in a simple scenario.

It's important to note that freezing can be incomplete.  In that case we
return EBUSY.  This means that some tasks in the cgroup are busy doing
something that prevents us from completely freezing the cgroup at this
time.  After EBUSY, the cgroup will remain partially frozen -- reflected
by freezer.state reporting "FREEZING" when read.  The state will remain
"FREEZING" until one of these things happens:

	1) Userspace cancels the freezing operation by writing "RUNNING" to
		the freezer.state file
	2) Userspace retries the freezing operation by writing "FROZEN" to
		the freezer.state file (writing "FREEZING" is not legal
		and returns EIO)
	3) The tasks that blocked the cgroup from entering the "FROZEN"
		state disappear from the cgroup's set of tasks.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: export thaw_process]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Tested-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:34 -07:00
Matt Helsley
83224b0837 container freezer: add TIF_FREEZE flag to all architectures
This patch series introduces a cgroup subsystem that utilizes the swsusp
freezer to freeze a group of tasks.  It's immediately useful for batch job
management scripts.  It should also be useful in the future for
implementing container checkpoint/restart.

The freezer subsystem in the container filesystem defines a cgroup file
named freezer.state.  Reading freezer.state will return the current state
of the cgroup.  Writing "FROZEN" to the state file will freeze all tasks
in the cgroup.  Subsequently writing "RUNNING" will unfreeze the tasks in
the cgroup.

* Examples of usage :

   # mkdir /containers/freezer
   # mount -t cgroup -ofreezer freezer  /containers
   # mkdir /containers/0
   # echo $some_pid > /containers/0/tasks

to get status of the freezer subsystem :

   # cat /containers/0/freezer.state
   RUNNING

to freeze all tasks in the container :

   # echo FROZEN > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   FREEZING
   # cat /containers/0/freezer.state
   FROZEN

to unfreeze all tasks in the container :

   # echo RUNNING > /containers/0/freezer.state
   # cat /containers/0/freezer.state
   RUNNING

This patch:

The first step in making the refrigerator() available to all
architectures, even for those without power management.

The purpose of such a change is to be able to use the refrigerator() in a
new control group subsystem which will implement a control group freezer.

[akpm@linux-foundation.org: fix sparc]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
Tested-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:33 -07:00
Linus Torvalds
e4856a70cf Merge branch 'personality' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'personality' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITY
2008-10-16 12:32:52 -07:00
Thomas Gleixner
4b1135a277 genirq: fix name space collisions of nr_irqs in arch/*
local shadows of global variables are _bad_

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-10-16 16:53:30 +02:00
Martin Schwidefsky
0b59268285 [PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITY
The SET_PERSONALITY macro is always called with a second argument of 0.
Remove the ibcs argument and the various tests to set the PER_SVR4
personality.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-16 15:40:05 +02:00
Dominik Brodowski
459fc208ab cpufreq: remove policy->governor setting in drivers initialization
As policy->governor is already set to CPUFREQ_DEFAULT_GOVERNOR in the
(always built-in) cpufreq core, we do not need to set it in the drivers.
This fixes the sparc64 allmodconfig build failure.

Also, remove a totally useles setting of ->policy in cpufreq-pxa3xx.c.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-15 16:42:47 -07:00
Haavard Skinnemoen
72a1419a9d avr32: Add defconfig for the favr-32 board
Taken from buildroot.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-14 13:22:19 +02:00
David Woodhouse
e758936e02 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	include/asm-x86/statfs.h
2008-10-13 17:13:56 +01:00
Haavard Skinnemoen
f040932fce avr32: Add defconfig for the mimc200 board
Provided by Mark Jackson.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-13 17:01:34 +02:00
Mark Jackson
5b50c166b7 avr32: Add MIMC200 board support
Please consider the following patch which adds support for a new AVR32
based board.

The board is closely based on Atmel's NGW100 reference board, but has an
extra 8MByte FLASH and 128KByte FRAM.

Signed-off-by: Mark Jackson <mpfj@mimc.co.uk>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-13 16:36:25 +02:00
Mark Jackson
198f29358a avr32: Fix MIMC200 board use of SPD network pins
The MIMC200 board uses the SPD output pin from the Ethernet MACs for
other purposes.

One of these is as a board-reset, so I've had to #define off the SPD
output pin declaration.

This is probably not the best way of achieving this, but works in the
current framework.

Signed-off-by: Mark Jackson <mpfj@mimc.co.uk>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-13 16:36:11 +02:00
Hans-Christian Egtvedt
45c349b58c avr32: add support for EarthLCD Favr-32 board
This patch adds support for the Favr-32 board made by EarthLCD.

This kit, which is also called ezLCD-101, has a 10.4" touch screen LCD panel,
16 MB 32-bit SDRAM, 8 MB parallel flash, Ethernet, audio out, USB device,
SD-card slot, USART and various other connectors for cennecting stuff to SPI,
I2C, GPIO, etc.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-13 16:01:18 +02:00
Hans-Christian Egtvedt
a3bee42f05 avr32: Add support for EVKLCD10X addon boards
This patch lets the user enable support for EVKLCD100 and EVKLCD101
(refered to by EVKLCD10X). By enabling EVKLCD10X support the LCD
controller and AC97 controller platform devices are added.

The user can also choose between the EVKLCD100 (QVGA display) and the
EVKLCD101 (VGA display), this is added to automagically select the
correct panel timing and resolution parameters.

Enabling support for EVKLCD10X addon board will cripple the MCI platform
device a bit since they share two GPIO lines (detect and write-protect).
These two lines are disabled when EVKLCD10X is enabled.

The default configurations are based upon ATNGW100, but with added AC97C
and LCDC driver. Virtual terminal is also enabled by default for
EVKLCD10X boards.

Verified on hardware with a NGW100 + EVKLCD100/101.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-13 12:56:24 +02:00
Haavard Skinnemoen
1d3ba686ed avr32: Kconfig: Remove pointless if around atstk1000 include
The contents of the ATSTK1000 Kconfig file itself is completely
conditional, so including it conditionally makes no sense and only adds
clutter.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-13 12:48:14 +02:00
Haavard Skinnemoen
6eb3ebe04d avr32: Fix build failures in board code
Fix a few instances of board code breakage introduced by the atmel-mci
platform interface changes.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-12 16:13:28 +02:00
Julien May
caf18f19ee avr32: Allow selecting multiple pins at once
at32_select_periph() now takes an u32 bitmask rather than a single pin.
This allows to set multiple pins at once.

Signed-off-by: Alex Raimondi <mailinglist@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-12 15:54:00 +02:00
Haavard Skinnemoen
0d62950125 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/atmel-mci-2.6.28 2008-10-12 15:44:33 +02:00
Haavard Skinnemoen
b3bc2c5562 avr32: Minor pm_power_off cleanup
Include <linux/pm.h> to see the declaration of pm_power_off, and remove
unneeded NULL initializer.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-08 18:44:58 +02:00
Haavard Skinnemoen
520bab804e avr32: Implement {read,write}[bwl]_be
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-08 18:44:57 +02:00
Haavard Skinnemoen
65e8b083fc atmel-mci: Add experimental DMA support
This adds support for DMA transfers through the generic DMA engine
framework with the DMA slave extensions.

The driver has been tested using mmc-block and ext3fs on several SD,
SDHC and MMC+ cards. Reads and writes work fine, with read transfer
rates up to 7.5 MiB/s on fast cards with debugging disabled.

Unfortunately, the driver has been known to lock up from time to time
with DMA enabled, so DMA support is currently optional and marked
EXPERIMENTAL. However, I didn't see any problems while testing 13
different cards (MMC, SD and SDHC of different brands and sizes), so I
suspect the "Initialize BLKR before sending data transfer command" fix
that was posted earlier fixed this as well.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-05 20:39:21 +02:00
Haavard Skinnemoen
965ebf33ea atmel-mci: support multiple mmc slots
The Atmel MCI controller can drive multiple cards through separate sets
of pins, but only one at a time. This patch adds support for
multiplexing access to the controller so that multiple card slots can be
used as if they were hooked up to separate mmc controllers.

The atmel-mci driver registers each slot as a separate mmc_host. Both
access the same common controller state, but they also have some state
on their own for card detection/write protect handling, and separate
shadows of the MR and SDCR registers.

When one of the slots receives a request from the mmc core, the common
controller state is checked. If it's idle, the request is submitted
immediately. If not, the request is added to a queue. When a request is
done, the queue is checked and if there is a queued request, it is
submitted before the completion callback is called.

This patch also includes a few cleanups and fixes, including a locking
overhaul. I had to change the locking extensively in any case, so I
might as well try to get it right. The driver no longer takes any
irq-safe locks, which may or may not improve the overall system
performance.

This patch also adds a bit of documentation of the internal data
structures.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-05 20:39:21 +02:00
Haavard Skinnemoen
6b918657b7 atmel-mci: Platform code for supporting multiple mmc slots
Add the necessary platform infrastructure to support multiple mmc/sdcard
slots all at once through a single controller. Currently, the driver
will use the first valid slot it finds and stick with that, but later
patches will add support for switching between several slots on the fly.

Extend the platform data structure with per-slot information: MMC/SDcard
bus width and card detect/write protect pins. This will affect the pin
muxing as well as the capabilities announced to the mmc core.

Note that board code is now required to supply a mci_platform_data
struct to at32_add_device_mci().

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-05 20:39:21 +02:00
Alex Raimondi
300bb76251 avr32: Replace static clock list with dynamic linked list
This replaces the at32_clock_list array with a linked list.
Clocks can now be registered (added) to the list.

Signed-off-by: Alex Raimondi <raimondi@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-10-05 19:33:48 +02:00
Uwe Kleine-König
787928e747 avr32: Use platform_driver_probe for pdc platform driver
The probe function of the pdc platform driver lives in the init section
and so a pdc device that is created after the init section is discarded
probably results in an oops.  Even if this cannot happen, using
platform_driver_probe is cleaner.  (If this can happen and should be
supported the probe function must live in the devinit section instead.)

Signed-off-by: Uwe Kleine-König <ukleinek@strlen.de>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-22 09:51:03 +02:00
Uwe Kleine-König
d6634db8fe avr32: Use platform_driver_probe for pio platform driver
The probe function of the pio platform driver lives in the init section
and so a pio device that is created after the init section is discarded
probably results in an oops.  Even if this cannot happen, using
platform_driver_probe is cleaner.  (If this can happen and should be
supported the probe function must live in the devinit section instead.)

Signed-off-by: Uwe Kleine-König <ukleinek@strlen.de>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-22 09:51:03 +02:00
Haavard Skinnemoen
ece2678c62 avr32: Provide a way to deselect pins in the portmux
Currently, setting up the portmux is completely one-shot: Once a pin is
muxed, the portmux driver will complain loudly and refuse to do anything
if you try to set up the same pin again.

Sometimes, it may be necessary to change the configuration of a pin
after it has been set up initially. This patch adds a way to undo the
previous configuration, allowing the pin to be reconfigured.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-22 09:51:02 +02:00
David Brownell
96706600de ngw100: export J15 through sysfs
The NGW100 board has jumper J15 (near the reset button) which
is unused.  This patch exports it through the GPIO sysfs support
(as /sys/class/gpio/gpio62/value) so that it's easily queried
by boot scripts or whatever might want to know if the jumper
has been installed (value = 0) or not (value = 1, "default").

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
[haavard.skinnemoen@atmel.com: add missing include]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-22 09:51:01 +02:00
Julien May
7066412488 avr32: Allow fine-grained control over LCDC pins
This replaces the pin_config param with an u64 pin_mask in
at32_add_device_lcdc, allowing a board-maintainer to indivually select
specific lcdc pins.

Signed-off-by: Alex Raimondi <raimondi@miromico.ch>
Signed-off-by: Julien May <jmay@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-22 09:51:01 +02:00
Marco Stornelli
48c1fd3882 avr32: added mem kernel command line option support
Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-22 09:51:01 +02:00
Nikolaus Voss
3d25615147 Add kernel support for oprofile callgraphs on AVR32
This patch adds backtracing capability to oprofile profiling in kernel
and user mode on AVR32. This is done by going through the frames on the
stack and adding oprofile traces for all return addresses. The code
being profiled has to be compiled with frame pointers to make this work.

Signed-off-by: Nikolaus Voss <n.voss@weinmann.de>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-22 09:51:01 +02:00
Harvey Harrison
f3c450be7b avr32: use the new byteorder headers
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
[haavard.skinnemoen@atmel.com: fix <mach/io.h> build breakage]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-22 09:51:00 +02:00
Manfred Spraul
3d431a7427 avr32: nmi_enter() without nmi_exit()
While updating the rcu code, I noticed that do_nmi() for AVR32 is odd:
There is an nmi_enter() call without an nmi_exit().
This can't be correct, it breaks rcu (at least the preempt version) and
lockdep.

[haavard.skinnemoen@atmel.com: fixed another case that returned directly]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-19 20:08:08 +02:00
Hans-Christian Egtvedt
73d4393d1d avr32: fix sys_sync_file_range() call convention
On AVR32, all parameters beyond the 5th are passed on the stack. System
calls don't use the stack -- they borrow a callee-saved register
instead. This means that syscalls that take 6 parameters must be called
through a stub that pushes the last parameter on the stack.

This patch adds a stub for sync_file_range syscall on AVR32
architecture.  Tested with uClibc snapshot.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-19 18:21:31 +02:00
Hans-Christian Egtvedt
e37925ebdb avr32: add generic_find_next_le_bit bit function
This patch implements the generic_find_next_le_bit bit function for AVR32
architecture. This is used by EXT4 file system.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-19 18:21:30 +02:00
Markus Heidelberg
1b771c12b5 avr32: add .gitignore files
Ignore Kernel binaries, kernel/vmlinux.lds and a log file.

Signed-off-by: Markus Heidelberg <markus.heidelberg@web.de>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-19 18:21:29 +02:00
Haavard Skinnemoen
7fb61a7b6f atstk1000: fix build breakage with BOARD_ATSTK100X_SW2_CUSTOM=y
The #ifdef surrounding the code adding the mmc controller had a typo,
causing it to be compiled even when mmc was supposed to be disabled.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-19 18:21:29 +02:00
Adrian Bunk
9d5a9e7465 Remove asm/a.out.h files for all architectures without a.out support.
This patch also includes the required removal of (unused) inclusion of
<asm/a.out.h> <linux/a.out.h>'s in the arch/ code for these
architectures.

[dwmw2: updated for 2.6.27-rc]
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-09-06 19:30:24 +01:00
Humphrey Bucknell
84c4f2f21a avr32: pm_standby low-power ram bug fix
The value stored into the SDRAMC LPR register should be the current
value of the register with the Self-refresh value set in the lower bit
field.

The bug involved only the Self-refresh value being written to the
register, thus over writing any low-power ram settings.

Signed-off-by: Humphrey Bucknell <hbucknell@saitek.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-01 13:04:09 +02:00
Haavard Skinnemoen
9e3f544d79 avr32: Fix lockup after Java stack underflow in user mode
When using the Java Extension Module hardware, a Java stack underflow or
overflow trap may cause the system to enter an infinite exception loop.
Although there's no kernel support for the Java hardware yet, we need to
be able to recover from this situation and keep the system running.

This patch adds code to detect and fixup this situation in the critical
exception handler and terminate the faulting process. We may have to
rethink how to handle this more gracefully when the necessary kernel
support for hardware-accelerated Java is added.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-09-01 13:04:04 +02:00
Haavard Skinnemoen
33f197a603 avr32: Make atstk1006_nand_data definition static
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08 12:44:56 +02:00
Haavard Skinnemoen
0fe9497e77 avr32: Reduce DataFlash bus speed to 8 MHz on ATNGW100
Doing this in combination with "atmel_spi: fix hang due to missed
interrupt" appears to eliminate the overruns I'm seeing when using
JFFS2-on-DataFlash as /usr filesystem on the ATNGW100.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08 12:44:41 +02:00
Haavard Skinnemoen
30930a44a4 avr32: Update defconfigs
Enable power management, DMA and MMC on all boards except ATSTK1004, and
add defconfig for the new ATSTK1006 board with NAND flash, UBI and UBIFS
enabled as well.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08 12:44:41 +02:00
Haavard Skinnemoen
b47eb4092f avr32: Clean up HMATRIX code
Introduce a few helper functions for HMATRIX configuration and clean up
the register definitions. Also add definitions for the HMATRIX master
and slave IDs on the AT32AP700x chips.

Also make the definitions in hmatrix.h available to board code by moving
it to <mach/hmatrix.h>

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08 12:44:01 +02:00
Haavard Skinnemoen
a8d902db22 avr32: Add MMIO address definitions for certain controllers
Hardcoded MMIO base addresses are used a few places throughout the
platform code. Move these into the chip-specific header file so that
adding support for new chips becomes a bit easier.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08 12:42:14 +02:00
Haavard Skinnemoen
8f8a59c664 avr32: Introduce <mach/chip.h>
This file includes the appropriate chip-specific header with MMIO, IRQ
and GPIO definitions used by the platform code. It may also be used to
provide inline GPIO accessors for drivers that are willing to sacrifice
portability for faster bitbanging.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08 12:41:56 +02:00
Haavard Skinnemoen
a7448db482 avr32: Remove include/asm-avr32/arch-at32ap
Since all users have been converted over to use <mach/foo.h>, there's no
need for the arch-at32ap directory and associated symlink anymore.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-08 12:31:55 +02:00
Haavard Skinnemoen
3663b736a5 avr32: Use <mach/foo.h> instead of <asm/arch/foo.h>
Update all avr32-specific files to use the new platform-specific header
locations. Drivers shared with ARM are left alone for now.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-05 14:36:57 +02:00
Haavard Skinnemoen
964d219b6a avr32: Introduce arch/avr32/mach-*/include/mach
Add arch/avr32/mach-*/include to include search path and copy all the
files from include/asm/arch there. The old files will be removed once
ARM does the same change and all common drivers are converted.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-05 13:49:09 +02:00
Haavard Skinnemoen
84db8d7cdb avr32: Move include/asm-avr32 to arch/avr32/include/asm
Leaving include/asm/arch alone for now.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-08-05 13:35:07 +02:00
David Brownell
3c26e17032 avr32: some mmc/sd cleanups
Minor cleanups for the MMC/SD support on avr32:

 - Make at32_add_device_mci() properly initialize "missing"
   platform data ... so boards like STK1002 won't try GPIO 0.

 - Switch over to gpio_is_valid() instead of testing for only
   one designated value.

 - Provide STK1002 platform data for the unlikely case that
   switches are set so first Ethernet controller isn't in use.
   (That's the only way to get card detect and writeprotect
   switch sensing on the STK1000.)

And get rid of one "unused variable" warning.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-27 13:57:36 +02:00
Haavard Skinnemoen
eda3d8f560 Merge commit 'upstream/master' 2008-07-27 13:54:08 +02:00
Linus Torvalds
9ee08c2df4 Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (57 commits)
  [MTD] [NAND] subpage read feature as a way to increase performance. 
  CPUFREQ: S3C24XX NAND driver frequency scaling support.
  [MTD][NAND] au1550nd: remove unused variable
  [MTD] jedec_probe: Fix SST 16-bit chip detection
  [MTD][MTDPART] Fix a division by zero bug
  [MTD][MTDPART] Cleanup and document the erase region handling
  [MTD][MTDPART] Handle most checkpatch findings
  [MTD][MTDPART] Seperate main loop from per-partition code in add_mtd_partition
  [MTD] physmap: resume already suspended chips on failure to suspend
  [MTD] physmap: Fix suspend/resume/shutdown bugs.
  [MTD] [NOR] Fix -ETIMEO errors in CFI driver
  [MTD] [NAND] fsl_elbc_nand: fix section mismatch with CONFIG_MTD_OF_PARTS=y
  [JFFS2] Use .unlocked_ioctl
  [MTD] Fix const assignment in the MTD command line partitioning driver
  [MTD] [NOR] gen_probe: No debug message when debugging is disabled
  [MTD] [NAND] remove __PPC__ hardcoded address from DiskOnChip drivers
  [MTD] [MAPS] Remove the bast-flash driver.
  [MTD] [NAND] fsl_elbc_nand: ecclayout cleanups
  [MTD] [NAND] fsl_elbc_nand: implement support for flash-based BBT
  [MTD] [NAND] fsl_elbc_nand: fix OOB workability for large page NAND chips
  ...
2008-07-26 20:30:56 -07:00
Johannes Weiner
46244a2b3c avr32: use generic show_mem()
Remove arch-specific show_mem() in favor of the generic version.

This also removes the following redundant information display:

	- free pages, printed by show_free_areas()
	- pages in slabs, printed by show_free_areas()
	- pages in swapcache, printed by show_swap_cache_info()

where show_mem() calls show_free_areas(), which calls
show_swap_cache_info().

Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-26 12:00:10 -07:00
Michael Buesch
7444a72eff gpiolib: allow user-selection
This patch adds functionality to the gpio-lib subsystem to make it
possible to enable the gpio-lib code even if the architecture code didn't
request to get it built in.

The archtitecture code does still need to implement the gpiolib accessor
functions in its asm/gpio.h file.  This patch adds the implementations for
x86 and PPC.

With these changes it is possible to run generic GPIO expansion cards on
every architecture that implements the trivial wrapper functions.  Support
for more architectures can easily be added.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: David Brownell <david-b@pacbell.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Samuel Ortiz <sameo@openedhand.com>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 10:53:30 -07:00
David Brownell
d8f388d8dc gpio: sysfs interface
This adds a simple sysfs interface for GPIOs.

    /sys/class/gpio
    	/export ... asks the kernel to export a GPIO to userspace
    	/unexport ... to return a GPIO to the kernel
        /gpioN ... for each exported GPIO #N
	    /value ... always readable, writes fail for input GPIOs
	    /direction ... r/w as: in, out (default low); write high, low
	/gpiochipN ... for each gpiochip; #N is its first GPIO
	    /base ... (r/o) same as N
	    /label ... (r/o) descriptive, not necessarily unique
	    /ngpio ... (r/o) number of GPIOs; numbered N .. N+(ngpio - 1)

GPIOs claimed by kernel code may be exported by its owner using a new
gpio_export() call, which should be most useful for driver debugging.
Such exports may optionally be done without a "direction" attribute.

Userspace may ask to take over a GPIO by writing to a sysfs control file,
helping to cope with incomplete board support or other "one-off"
requirements that don't merit full kernel support:

  echo 23 > /sys/class/gpio/export
	... will gpio_request(23, "sysfs") and gpio_export(23);
	use /sys/class/gpio/gpio-23/direction to (re)configure it,
	when that GPIO can be used as both input and output.
  echo 23 > /sys/class/gpio/unexport
	... will gpio_free(23), when it was exported as above

The extra D-space footprint is a few hundred bytes, except for the sysfs
resources associated with each exported GPIO.  The additional I-space
footprint is about two thirds of the current size of gpiolib (!).  Since
no /dev node creation is involved, no "udev" support is needed.

Related changes:

  * This adds a device pointer to "struct gpio_chip".  When GPIO
    providers initialize that, sysfs gpio class devices become children of
    that device instead of being "virtual" devices.

  * The (few) gpio_chip providers which have such a device node have
    been updated.

  * Some gpio_chip drivers also needed to update their module "owner"
    field ...  for which missing kerneldoc was added.

  * Some gpio_chips don't support input GPIOs.  Those GPIOs are now
    flagged appropriately when the chip is registered.

Based on previous patches, and discussion both on and off LKML.

A Documentation/ABI/testing/sysfs-gpio update is ready to submit once this
merges to mainline.

[akpm@linux-foundation.org: a few maintenance build fixes]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Cc: Greg KH <greg@kroah.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25 10:53:30 -07:00
David Woodhouse
ff877ea80e Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6 2008-07-25 10:40:14 -04:00
Voss, Nikolaus
56d3eef2b4 avr32: allow system timer to share interrupt to make OProfile work
The following patch allows the avr32_comparator interrupt to be shared.
This is necessary as the avr32 oprofile driver shares the irq group 0
with the timer.

To make OProfile actually work on AVR32, a small patch for oprofiled is
also needed (posted to the oprofile mailing list).

Signed-off-by: Nikolaus Voss <n.voss@weinmann.de>
[haavard.skinnemoen@atmel.com: set IRQF_SHARED unconditionally]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-25 14:31:29 +02:00
Linus Torvalds
ecc8b655b3 Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  nohz: adjust tick_nohz_stop_sched_tick() call of s390 as well
  nohz: prevent tick stop outside of the idle loop
2008-07-24 12:55:01 -07:00
Linus Torvalds
2528ce3237 Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  arch/mips/kernel/stacktrace.c: Heiko can't type
  kthread: reduce stack pressure in create_kthread and kthreadd
  fix core/stacktrace changes on avr32, mips, sh
2008-07-24 12:54:26 -07:00
Andrea Righi
27ac792ca0 PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures
On 32-bit architectures PAGE_ALIGN() truncates 64-bit values to the 32-bit
boundary. For example:

	u64 val = PAGE_ALIGN(size);

always returns a value < 4GB even if size is greater than 4GB.

The problem resides in PAGE_MASK definition (from include/asm-x86/page.h for
example):

#define PAGE_SHIFT      12
#define PAGE_SIZE       (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK       (~(PAGE_SIZE-1))
...
#define PAGE_ALIGN(addr)       (((addr)+PAGE_SIZE-1)&PAGE_MASK)

The "~" is performed on a 32-bit value, so everything in "and" with
PAGE_MASK greater than 4GB will be truncated to the 32-bit boundary.
Using the ALIGN() macro seems to be the right way, because it uses
typeof(addr) for the mask.

Also move the PAGE_ALIGN() definitions out of include/asm-*/page.h in
include/linux/mm.h.

See also lkml discussion: http://lkml.org/lkml/2008/6/11/237

[akpm@linux-foundation.org: fix drivers/media/video/uvc/uvc_queue.c]
[akpm@linux-foundation.org: fix v850]
[akpm@linux-foundation.org: fix powerpc]
[akpm@linux-foundation.org: fix arm]
[akpm@linux-foundation.org: fix mips]
[akpm@linux-foundation.org: fix drivers/media/video/pvrusb2/pvrusb2-dvb.c]
[akpm@linux-foundation.org: fix drivers/mtd/maps/uclinux.c]
[akpm@linux-foundation.org: fix powerpc]
Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:21 -07:00
Johannes Weiner
3560e249ab bootmem: replace node_boot_start in struct bootmem_data
Almost all users of this field need a PFN instead of a physical address,
so replace node_boot_start with node_min_pfn.

[Lee.Schermerhorn@hp.com: fix spurious BUG_ON() in mark_bootmem()]
Signed-off-by: Johannes Weiner <hannes@saeureba.de>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:20 -07:00
Johannes Weiner
9109fb7b35 mm: drop unneeded pgdat argument from free_area_init_node()
free_area_init_node() gets passed in the node id as well as the node
descriptor.  This is redundant as the function can trivially get the node
descriptor itself by means of NODE_DATA() and the node's id.

I checked all the users and NODE_DATA() seems to be usable everywhere
from where this function is called.

Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:16 -07:00
David Brownell
9483a578df add HAVE_CLK to Kconfig, for driver dependencies
Flag platforms as HAVE_CLK (or not) in Kconfig, based on whether they
support <linux/clk.h> calls, so that otherwise portable drivers which need
those calls can list that dependency.

Something like this is a prerequisite for merging the musb_hdrc driver,
currently used on platforms including Davinci, OMAP2430, OMAP3xx ...  and
the discrete TUSB6010 chip, which doesn't have a natural platform
dependency.  (Used with OMAP 2420 in current Nokia N8x0 tablets.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:13 -07:00
Hans-Christian Egtvedt
218df4a25a avr32: Add platform data for AC97C platform device
This patch adds platform data to the AC97C platform device. This will
let the board add a GPIO line which is connected to the external codecs
reset line.

The platform data, ac97c_platform_data, must also contain the DMA
controller ID, RX channel ID and TX channel ID.

Tested with Wolfson WM9712 and AP7000.

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-24 13:51:46 +02:00
Linus Torvalds
5554b35933 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (24 commits)
  I/OAT: I/OAT version 3.0 support
  I/OAT: tcp_dma_copybreak default value dependent on I/OAT version
  I/OAT: Add watchdog/reset functionality to ioatdma
  iop_adma: cleanup iop_chan_xor_slot_count
  iop_adma: document how to calculate the minimum descriptor pool size
  iop_adma: directly reclaim descriptors on allocation failure
  async_tx: make async_tx_test_ack a boolean routine
  async_tx: remove depend_tx from async_tx_sync_epilog
  async_tx: export async_tx_quiesce
  async_tx: fix handling of the "out of descriptor" condition in async_xor
  async_tx: ensure the xor destination buffer remains dma-mapped
  async_tx: list_for_each_entry_rcu() cleanup
  dmaengine: Driver for the Synopsys DesignWare DMA controller
  dmaengine: Add slave DMA interface
  dmaengine: add DMA_COMPL_SKIP_{SRC,DEST}_UNMAP flags to control dma unmap
  dmaengine: Add dma_client parameter to device_alloc_chan_resources
  dmatest: Simple DMA memcpy test client
  dmaengine: DMA engine driver for Marvell XOR engine
  iop-adma: fix platform driver hotplug/coldplug
  dmaengine: track the number of clients using a channel
  ...

Fixed up conflict in drivers/dca/dca-sysfs.c manually
2008-07-23 12:03:18 -07:00
Andi Kleen
4a0b2b4dbe sysdev: Pass the attribute to the low level sysdev show/store function
This allow to dynamically generate attributes and share show/store
functions between attributes. Right now most attributes are generated
by special macros and lots of duplicated code. With the attribute
passed it's instead possible to attach some data to the attribute
and then use that in shared low level functions to do different things.

I need this for the dynamically generated bank attributes in the x86
machine check code, but it'll allow some further cleanups.

I converted all users in tree to the new show/store prototype. It's a single
huge patch to avoid unbisectable sections.

Runtime tested: x86-32, x86-64
Compiled only: ia64, powerpc
Not compile tested/only grep converted: sh, arm, avr32

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:55:02 -07:00
Ingo Molnar
9b610fda0d Merge branch 'linus' into timers/nohz 2008-07-18 19:53:16 +02:00
Thomas Gleixner
b8f8c3cf0a nohz: prevent tick stop outside of the idle loop
Jack Ren and Eric Miao tracked down the following long standing
problem in the NOHZ code:

	scheduler switch to idle task
	enable interrupts

Window starts here

	----> interrupt happens (does not set NEED_RESCHED)
	      	irq_exit() stops the tick

	----> interrupt happens (does set NEED_RESCHED)

	return from schedule()
	
	cpu_idle(): preempt_disable();

Window ends here

The interrupts can happen at any point inside the race window. The
first interrupt stops the tick, the second one causes the scheduler to
rerun and switch away from idle again and we end up with the tick
disabled.

The fact that it needs two interrupts where the first one does not set
NEED_RESCHED and the second one does made the bug obscure and extremly
hard to reproduce and analyse. Kudos to Jack and Eric.

Solution: Limit the NOHZ functionality to the idle loop to make sure
that we can not run into such a situation ever again.

cpu_idle()
{
	preempt_disable();

	while(1) {
		 tick_nohz_stop_sched_tick(1); <- tell NOHZ code that we
		 			          are in the idle loop

		 while (!need_resched())
		       halt();

		 tick_nohz_restart_sched_tick(); <- disables NOHZ mode
		 preempt_enable_no_resched();
		 schedule();
		 preempt_disable();
	}
}

In hindsight we should have done this forever, but ... 

/me grabs a large brown paperbag.

Debugged-by: Jack Ren <jack.ren@marvell.com>, 
Debugged-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-07-18 18:10:28 +02:00
Heiko Carstens
8b95d9172b fix core/stacktrace changes on avr32, mips, sh
Fixes this type of problem:

  CC      arch/s390/kernel/stacktrace.o
arch/s390/kernel/stacktrace.c:84: warning: data definition has no type or storage class
arch/s390/kernel/stacktrace.c:84: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL'
arch/s390/kernel/stacktrace.c:84: warning: parameter names (without types) in function declaration
arch/s390/kernel/stacktrace.c:97: warning: data definition has no type or storage class
arch/s390/kernel/stacktrace.c:97: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL'
arch/s390/kernel/stacktrace.c:97: warning: parameter names (without types) in function declaration

caused by "stacktrace: export save_stack_trace[_tsk]"

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18 14:42:35 +02:00
Ben Nizette
fbfca4b878 avr32: clean up mci platform code
This patch does a few small cleanups around the atmel mci platform code
and in the atmel-mci driver.  The platform changes simply removes an
unused variable, uses the fact that by the end we always have some form
of platform data and notes that GPIO_PIN_NONE != 0.  This last point
could cause the incorrect attempt to twice reserve pin PA0.

While we've got the hood up, add linux/err.h to the atmel-mci.c include
list.  It needs it and generally pulls it by voodoo but I did once
stumble across a config which don't build.

This is against Linus' latest git.

Signed-off-by: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-18 11:01:16 +02:00
Adrian Bunk
62fe8378d9 fix avr32 build errors
Commit 7d2be0749a
(atmel-mci: Driver for Atmel on-chip MMC controllers)
causes build errors like:

<--  snip  -->

...
  CC      arch/avr32/boards/atstk1000/atstk1003.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/avr32/boards/atstk1000/atstk1003.c: In function 'atstk1003_init':
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/avr32/boards/atstk1000/atstk1003.c:157: error: too few arguments to function 'at32_add_device_mci'
make[2]: *** [arch/avr32/boards/atstk1000/atstk1003.o] Error 1

<--  snip  -->

Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-17 21:01:34 +02:00
Linus Torvalds
8a0ca91e1d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (68 commits)
  sdio_uart: Fix SDIO break control to now return success or an error
  mmc: host driver for Ricoh Bay1Controllers
  sdio: sdio_io.c Fix sparse warnings
  sdio: fix the use of hard coded timeout value.
  mmc: OLPC: update vdd/powerup quirk comment
  mmc: fix spares errors of sdhci.c
  mmc: remove multiwrite capability
  wbsd: fix bad dma_addr_t conversion
  atmel-mci: Driver for Atmel on-chip MMC controllers
  mmc: fix sdio_io sparse errors
  mmc: wbsd.c fix shadowing of 'dma' variable
  MMC: S3C24XX: Refuse incorrectly aligned transfers
  MMC: S3C24XX: Add maintainer entry
  MMC: S3C24XX: Update error debugging.
  MMC: S3C24XX: Add media presence test to request handling.
  MMC: S3C24XX: Fix use of msecs where jiffies are needed
  MMC: S3C24XX: Add MODULE_ALIAS() entries for the platform devices
  MMC: S3C24XX: Fix s3c2410_dma_request() return code check.
  MMC: S3C24XX: Allow card-detect on non-IRQ capable pin
  MMC: S3C24XX: Ensure host->mrq->data is valid
  ...

Manually fixed up bogus executable bits on drivers/mmc/core/sdio_io.c
and include/linux/mmc/sdio_func.h when merging.
2008-07-16 15:17:52 -07:00
Linus Torvalds
af5329cdf5 Merge branch 'core/stacktrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core/stacktrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  generic-ipi: powerpc/generic-ipi tree build failure
  stacktrace: fix build failure on sparc64
  stacktrace: export save_stack_trace[_tsk]
  stacktrace: fix modular build, export print_stack_trace and save_stack_trace
  backtrace: replace timer with tasklet + completions
  stacktrace: add saved stack traces to backtrace self-test
  stacktrace: print_stack_trace() cleanup
  debugging: make stacktrace independent from DEBUG_KERNEL
  stacktrace: don't crash on invalid stack trace structs
2008-07-15 10:31:35 -07:00
Haavard Skinnemoen
7d2be0749a atmel-mci: Driver for Atmel on-chip MMC controllers
This is a driver for the MMC controller on the AP7000 chips from
Atmel. It should in theory work on AT91 systems too with some
tweaking, but since the DMA interface is quite different, it's not
entirely clear if it's worth merging this with the at91_mci driver.

This driver has been around for a while in BSPs and kernel sources
provided by Atmel, but this particular version uses the generic DMA
Engine framework (with the slave extensions) instead of an
avr32-only DMA controller framework.

This driver can also use PIO transfers when no DMA channels are
available, and for transfers where using DMA may be difficult or
impractical for some reason (e.g. the DMA setup overhead is usually
not worth it for very short transfers, and badly aligned buffers or
lengths are difficult to handle.)

Currently, the driver only support PIO transfers. DMA support has been
split out to a separate patch to hopefully make it easier to review.

The driver has been tested using mmc-block and ext3fs on several SD,
SDHC and MMC+ cards. Reads and writes work fine, with read transfer
rates up to 3.5 MiB/s on fast cards with debugging disabled.

The driver has also been tested using the mmc_test module on the same
cards. All tests except 7, 9, 15 and 17 succeed. The first two are
unsupported by all the cards I have, so I don't know if the driver
handles this correctly. The last two fail because the hardware flags a
Data CRC Error instead of a Data Timeout error. I'm not sure how to deal
with that.

Documentation for this controller can be found in many data sheets from
Atmel, including the AT32AP7000 data sheet which can be found here:

http://www.atmel.com/dyn/products/datasheets.asp?family_id=682

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:49 +02:00
Linus Torvalds
d18bb9a548 Merge branch 'core/rodata' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core/rodata' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  move BUG_TABLE into RODATA
2008-07-14 15:28:10 -07:00
David Woodhouse
a8931ef380 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-07-11 14:36:25 +01:00
Haavard Skinnemoen
3bfb1d20b5 dmaengine: Driver for the Synopsys DesignWare DMA controller
This adds a driver for the Synopsys DesignWare DMA controller (aka
DMACA on AVR32 systems.) This DMA controller can be found integrated
on the AT32AP7000 chip and is primarily meant for peripheral DMA
transfer, but can also be used for memory-to-memory transfers.

This patch is based on a driver from David Brownell which was based on
an older version of the DMA Engine framework. It also implements the
proposed extensions to the DMA Engine API for slave DMA operations.

The dmatest client shows no problems, but there may still be room for
improvement performance-wise. DMA slave transfer performance is
definitely "good enough"; reading 100 MiB from an SD card running at ~20
MHz yields ~7.2 MiB/s average transfer rate.

Full documentation for this controller can be found in the Synopsys
DW AHB DMAC Databook:

http://www.synopsys.com/designware/docs/iip/DW_ahb_dmac/latest/doc/dw_ahb_dmac_db.pdf

The controller has lots of implementation options, so it's usually a
good idea to check the data sheet of the chip it's intergrated on as
well. The AT32AP7000 data sheet can be found here:

http://www.atmel.com/dyn/products/datasheets.asp?family_id=682


Changes since v4:
  * Use client_count instead of dma_chan_is_in_use()
  * Add missing include
  * Unmap buffers unless client told us not to

Changes since v3:
  * Update to latest DMA engine and DMA slave APIs
  * Embed the hw descriptor into the sw descriptor
  * Clean up and update MODULE_DESCRIPTION, copyright date, etc.

Changes since v2:
  * Dequeue all pending transfers in terminate_all()
  * Rename dw_dmac.h -> dw_dmac_regs.h
  * Define and use controller-specific dma_slave data
  * Fix up a few outdated comments
  * Define hardware registers as structs (doesn't generate better
    code, unfortunately, but it looks nicer.)
  * Get number of channels from platform_data instead of hardcoding it
    based on CONFIG_WHATEVER_CPU.
  * Give slave clients exclusive access to the channel

Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>,
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-07-08 11:59:42 -07:00
Hans-Christian Egtvedt
72f6befeea avr32: Fix typo of IFSR in a comment in the PIO header file
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-04 09:48:05 +02:00
Ingo Molnar
7b4c9505f2 stacktrace: export save_stack_trace[_tsk]
Andrew Morton reported this against linux-next:

ERROR: ".save_stack_trace" [tests/backtracetest.ko] undefined!

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-03 09:17:55 +02:00
Haavard Skinnemoen
02a00cf672 avr32: Power Management support ("standby" and "mem" modes)
Implement Standby support. In this mode, we'll suspend all drivers,
put the SDRAM in self-refresh mode and switch off the HSB bus
("frozen" mode.)

Implement Suspend-to-mem support. In this mode, we suspend all
drivers, put the SDRAM into self-refresh mode and switch off all
internal clocks except the 32 kHz oscillator ("stop" mode.)

The lowest-level suspend code runs from a small portion of SRAM
allocated at startup time. This gets rid of a small potential race
with the SDRAM where we might try to enter self-refresh mode in the
middle of an icache burst. We also relocate all interrupt and
exception handlers to SRAM during the small window when we enter and
exit the low-power modes.

We don't need to do any special tricks to start and stop the PLL. The
main clock is automatically gated by hardware until the PLL is stable.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-07-02 11:05:01 +02:00
Haavard Skinnemoen
aa8e87ca61 avr32: Add system device for the internal interrupt controller (intc)
This makes the intc show up in sysfs (probably not very useful), and
allows us to easily add suspend/resume support later.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-07-02 11:05:01 +02:00
Haavard Skinnemoen
b83d6ee175 avr32: Add simple SRAM allocator
Add SRAM allocator for avr32, which is just a thin wrapper around
genalloc.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-07-02 11:05:01 +02:00
Haavard Skinnemoen
7951f188a0 avr32: Enable SDRAMC clock at startup
The SDRAM controller needs a clock in order to respond to our
commands, and suspend doesn't work very well without the SDRAM in
self-refresh mode.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-07-02 11:05:01 +02:00
Haavard Skinnemoen
5a4d529277 avr32: Use a quicklist for PGD allocation
Use a quicklist to allocate process PGDs. This is expected to be
slightly faster since we need to copy entries from swapper_pg_dir,
which can stay around for pages on the PGD quick list.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-02 11:01:29 +02:00
Haavard Skinnemoen
a9a934f278 avr32: Cover the kernel page tables in the user PGDs
Expand the per-process PGDs so that they cover the kernel virtual
memory area as well. This simplifies the TLB miss handler fastpath
since it doesn't have to check for kernel addresses anymore.

If a TLB miss happens on a kernel address and a second-level page
table can't be found, we check swapper_pg_dir and copy the PGD entry
into the user PGD if it can be found there.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-02 11:01:29 +02:00
Haavard Skinnemoen
cfd23e93a0 avr32: Store virtual addresses in the PGD
Instead of storing physical addresses along with page flags in the
PGD, store virtual addresses and use NULL to indicate a not present
second-level page table. A non-page-aligned page table indicates a bad
PMD.

This simplifies the TLB miss handler since it no longer has to check
the Present bit and no longer has to convert the PGD entry from
physical to virtual address. Instead, it has to check for a NULL
entry, which is slightly cheaper than either.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-02 11:01:28 +02:00
Haavard Skinnemoen
ebe74597a5 avr32: Remove useless zeroing of swapper_pg_dir at startup
swapper_pg_dir is stored in .bss, so it must already be zeroed out
when we get there.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-02 11:01:28 +02:00
Haavard Skinnemoen
b13d618b44 avr32: Clean up and optimize the TLB operations
This and the following patches aim to optimize the code dealing with
page tables and TLB operations. Each patch reduces the time it takes
to gzip a 16 MB file slightly, but I expect things like fork() and
mmap() will improve somewhat more.

This patch deals with the low-level TLB operations:

  * Remove unused _TLBEHI_I define
  * Use gcc builtins instead of inline assembly
  * Remove a few unnecessary pipeline flushes and nops
  * Introduce NR_TLB_ENTRIES define and use it instead of hardcoding it
    to 32 a few places throughout the code.
  * Use sysreg bitops instead of hardcoded shifts and masks
  * Make a few needlessly global functions static

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-07-02 11:01:28 +02:00
Haavard Skinnemoen
d7ff2a4a28 avr32: Rename at32ap.c -> pdc.c
The only thing left in at32ap.c is some PDC stuff. Rename the file to
reflect what it actually does.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-06-28 15:08:48 +02:00
Haavard Skinnemoen
65033ed740 avr32: Move setup_platform() into chip-specific file
Combine at32_clock_init() and at32_portmux_init() into
setup_platform() and remove setup_platform() from at32ap.c. No
functional change since all setup_platform() ever did was call those
two functions.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-06-28 15:08:39 +02:00
Haavard Skinnemoen
d704fb0cc0 avr32: Kill special exception handler sections
Kill the special exception handler sections .tlbx.ex.text,
.tlbr.ex.text, tlbw.ex.text and .scall.text. Use .org instead to place
the handlers at the required offsets from EVBA.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 17:48:06 +02:00
Haavard Skinnemoen
9dbef285a3 avr32: Clean up time.c #includes
Remove lots of unneeded #includes, add #include <linux/kernel.h> and
sort alphabetically.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 17:48:04 +02:00
Sedji Gaouaou
8405996ff6 atmel_pwm: Rename the "mck" clock to "pwm_clk"
The name "mck" causes a conflict on AT91. Call it "pwm_clk" instead.

Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:32:30 +02:00
David Brownell
9c2baf785e at32ap700x spi: enable pullups on MISO
This is a minor tweak to the at32ap700x pin configuration for the SPI
input pin (MISO), enabling the on-chip weak pullup (typical 190K) to

  (a) ensure a fixed data value for missing or input-only slaves;

  (b) prevent power waste associated with inputs floating near VDDIO/2.

Atmel's boards have no external pullup or pulldown on these pins, so
it's unlikely other boards would address these issues with external
pulldowns.  Were there trouble, board-specific code could turn off
the relevant pullup(s).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:32:29 +02:00
David Brownell
7ef31e9c4e avr32: improve NGW100 I2C/PMBus setup
Basic I2C initialization for the NGW100 board:

  - Provide empty i2c device table. Daughtercards may add devices,
    and the ATtiny24 could do stuff too.

  - Set up EXTINT(3) so the ATtiny24 can interrupt the AP7000.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:32:29 +02:00
Hans-Christian Egtvedt
d86d314f67 avr32: Add PSIF platform devices
This patch adds the PS/2 interface (PSIF) to the device code, split into
two platform devices, one for each port.

The function for adding the PSIF platform device is also added to the
board header file.

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:32:28 +02:00
Hans-Christian Egtvedt
47882cf620 avr32: Add pin configuration choice to LCDC peripheral
This patch lets the board code choose which pin out to use for the LCD
interface.

On AT32AP7000 the LCDC is wired to two sets of pins, which lets the user
choose between dual ethernet and 32-bit EBI. For the ATNGW100 board it
is vital to have the choice to select the alternative pinout since this
pinout is routed to the external headers.

Update ATSTK1002 and ATSTK1004 to use the new interface.

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:32:27 +02:00
David Brownell
aafafddb01 avr32: minor GPIO handling updates
On the odd chance some code uses a pin as a GPIO IRQ without calling
gpio_request() or gpio_direction_input(), the debug dump should still
show its pin status.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:32:27 +02:00
Haavard Skinnemoen
c1f24ac99f avr32: Fix wrong I/O access size in __raw_readsb
__raw_readsb() should always use byte accesses, never halfword accesses,
to I/O memory.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:07:50 +02:00
Martin Koegler
7c1b90a1e9 avr32: Fix sigaltstack behaviour
A signal handler should be able to change the signal stack used for the
next signal by altering the ucontext_t passed as a parameter to the
handler. This does not currently work on avr32 since it doesn't update
the in-kernel signal context from the ucontext_t upon signal handler
return.

Fix it by adding a call to do_sigaltstack() from sys_rt_sigreturn(),
bringing it in line with most other architectures.

Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
[haavard.skinnemoen@atmel.com: changed patch description]
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:07:35 +02:00
Alex
60ed7951d0 avr32: Allow board to define oscillator rates
On our custom board we have other oscillator rates than on atngw100 and
atstk100x.

Currently these rates are hardcoded in arch/avr32/mach-at32ap/at32ap700x.c.

This patch moves them into board specific code.

Signed-off-by: Alex Raimondi <raimondi@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:07:16 +02:00
Haavard Skinnemoen
8bd8974fcd avr32: export empty_zero_page
Fixes one of two ext4 build problems:
ERROR: "empty_zero_page" [fs/ext4/ext4dev.ko] undefined!

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-27 15:07:07 +02:00
Ingo Molnar
6d72b7952f Merge branch 'linus' into core/rodata 2008-06-16 11:24:00 +02:00
Håvard Skinnemoen
e150d6e725 avr32: Add support for ATSTK1006
The ATSTK1006 is basically an upgraded version of ATSTK1002 with
128 MiB SDRAM and 256 MiB NAND flash on board.

Otherwise, the board is very similar to the ATSTK1002, so it uses the
same board support file.

Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-06-07 08:46:24 +01:00
Håvard Skinnemoen
62090a08ab [MTD] [NAND] avr32: atmel_nand platform code for AT32AP700x
This function initializes and adds a platform_device for a NAND flash
interface on SMC chip select 3.

Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-06-07 08:45:36 +01:00
Håvard Skinnemoen
e1677ce4e4 avr32: move hsmc_init() to core_initcall
The board init code, typically running from postcore_initcall, may
need to set up SMC timings. We have to make sure the SMC driver is
ready before this happens.

Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-06-07 08:45:07 +01:00
Haavard Skinnemoen
f04d264afc avr32: Fix cpufreq oops when ondemand governor is default
Move the AP7 cpufreq init to late_initcall() so that we don't try to
bring up cpufreq until the governor is ready. x86 also uses
late_initcall() for this.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-05-27 09:37:42 +02:00
Haavard Skinnemoen
d56acacdcd avr32: Update defconfigs
Just provide reasonable defaults for the new stuff. Tickless and
hrtimers are turned on for all boards except ATSTK1004.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-05-26 13:38:29 +02:00
Adrian Bunk
01575995de avr32: export strnlen_user
This patch fixes the following build error:

<--  snip  -->

...
  MODPOST 1327 modules
ERROR: "strnlen_user" [drivers/input/misc/uinput.ko] undefined!
...
make[2]: *** [__modpost] Error 1

<--  snip  -->

Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-05-26 13:26:36 +02:00
Adrian Bunk
a0ed3d8d94 avr32: export copy_page
This patch fixes the following build error:

<--  snip  -->

...
  MODPOST 61 modules
ERROR: "copy_page" [fs/fuse/fuse.ko] undefined!
...
make[2]: *** [__modpost] Error 1

<--  snip  -->

Also add an empty line since *_page aren't "String functions".

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-05-26 13:26:36 +02:00
Jan Beulich
6360b1fbb4 move BUG_TABLE into RODATA
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-25 07:06:08 +02:00
Al Viro
f52111b154 [PATCH] take init_files to fs/file.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-05-16 17:22:20 -04:00
Ulrich Drepper
d35c7b0e54 unified (weak) sys_pipe implementation
This replaces the duplicated arch-specific versions of "sys_pipe()" with
one unified implementation.  This removes almost 250 lines of duplicated
code.

It's marked __weak, so that *if* an architecture wants to override the
default implementation it can do so by simply having its own replacement
version, since many architectures use alternate calling conventions for
the 'pipe()' system call for legacy reasons (ie traditional UNIX
implementations often return the two file descriptors in registers)

I still haven't changed the cris version even though Linus says the BKL
isn't needed.  The arch maintainer can easily do it if there are really
no obstacles.

Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-03 13:50:33 -07:00
Christoph Lameter
40765200b6 avr32: use kbuild.h macros instead of defining macros in asm-offsets.c
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:29 -07:00
Denis V. Lunev
0d9f10f4eb avr32: proc: use non-racy method for /proc/tlb creation
Use proc_create() to make sure that ->proc_fops be setup before gluing PDE to
main tree.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:21 -07:00
Haavard Skinnemoen
01d3a5e7fa atmel_lcdfb: don't initialize a pre-allocated framebuffer
If the user specified a fixed framebuffer address on the command line, it may
have been initialized already with a splash image or something, so we
shouldn't clear it.

Therefore, we should only initialize the framebuffer if we allocated it
ourselves.  This patch also updates the AVR32 setup code to clear the
framebuffer if it allocated it itself, i.e.  the user didn't provide a fixed
address or the reservation failed.

I've updated the at91 platform code as well so that it initializes the
framebuffer if it is located in SRAM, but I haven't tested that it actually
works.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Nicolas FERRE <nicolas.ferre@rfo.atmel.com>
Cc: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 08:58:38 -07:00
Peter Ma
ed3fa7c951 avr32: Add hardware power-down function call
This patch adds in the indirect call to pm_power_off(), as is done in
other architectures (e.g. ARM).

Tested on NGW100, with custom board with GPIO control over main DC
power.

Signed-off-by: Peter Ma <pma@mediamatech.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-04-19 20:40:11 -04:00
Johannes Weiner
e6bef83af7 avr32: Remove two unused #defines from mm/init.c
Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-04-19 20:40:08 -04:00
Hans-Christian Egtvedt
35bf50ccc8 avr32: Implement set_rate(), set_parent() and mode() for pll1
This patch is a take two of adding full functionality to PLL1 on
AT32AP7000.  This allows board-specific code and drivers to configure
and enable PLL1. This is useful when precise control over the
frequency of e.g. a genclock is needed and requested by users for the
ABDAC device.

The patch is based upon previous patches from both Haavard Skinnemoen
and David Brownell.

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-04-19 20:40:08 -04:00
David Brownell
e723ff666a avr32: Generic clockevents support
This combines three patches from David Brownell:
  * avr32: tclib support
  * avr32: simplify clocksources
  * avr32: Turn count/compare into a oneshot clockevent device

Register both TC blocks (instead of just the first one) so that
the AT32/AT91 tclib code will pick them up (instead of just the
avr32-only PIT-style clocksource).

Rename the first one and its resources appropriately.

More cleanups to the cycle counter clocksource code

 - Disable all the weak symbol magic; remove the AVR32-only TCB-based
   clocksource code (source and header).

 - Mark the __init code properly.

 - Don't forget to report IRQF_TIMER.

 - Make the system work properly with this clocksource, by preventing
   use of the CPU "idle" sleep state in the idle loop when it's used.

Package the avr32 count/compare timekeeping support as a oneshot
clockevent device, so it supports NO_HZ and high res timers.
This means it also supports plugging in other clockevent devices
and clocksources.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-04-19 20:40:08 -04:00
Haavard Skinnemoen
7e59128f31 avr32: Move sleep code into mach-at32ap
Create a new file, pm-at32ap700x.S, in mach-at32ap and move the CPU
idle sleep code there. Make it possible to disable the sleep code.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-04-19 20:40:07 -04:00
Haavard Skinnemoen
46acb55b4b avr32: Delete mostly unused header asm/intc.h
Move the only thing that was actually implemented and used in
asm/intc.h, intc_get_pending(), into asm/irq.h and delete asm/intc.h

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-04-19 20:40:07 -04:00
David Brownell
62c6df62f9 avr32: start clocksource cleanup
Start cleaning up the AVR32 clocksource mess, starting with the cycle
counter clocksource:  remove unneeded pseudo-RTC (just inline that
call to mktime) and associated build warning, and unused sysdev.

Add comment about the problem using the cycle counter register,
and adjust the clocksource rating accordingly.  Later patches can
make this usable again (by disabling use of the idle state and
providing a proper clocksource without the weak binding hacks)
and move towards TCB-based clockevent support (including high
resolution timers) that's shared between AT91 and AVR32.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-04-19 20:40:06 -04:00
Ben Nizette
040b28fc0a avr32: pass i2c board info through at32_add_device_twi
New-style I2C drivers require that motherboard-mounted I2C devices are
registered with the I2C core, typically at arch_initcall time.  This
can be done nice and neat by passing the struct i2c_board_info[]
through at32_add_device_twi just like we do for the SPI board info.

While we've got the hood up, remove a duplicate declaration of
at32_add_device_twi() in board.h.

[hskinnemoen@atmel.com: add missing i2c_board_info forward-declaration]
Signed-Off-By: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-04-19 20:40:06 -04:00
Haavard Skinnemoen
e1c25dc638 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/usba-2.6.26 into base 2008-04-19 20:38:41 -04:00
Matthew Wilcox
64ac24e738 Generic semaphore implementation
Semaphores are no longer performance-critical, so a generic C
implementation is better for maintainability, debuggability and
extensibility.  Thanks to Peter Zijlstra for fixing the lockdep
warning.  Thanks to Harvey Harrison for pointing out that the
unlikely() was unnecessary.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
2008-04-17 10:42:34 -04:00
Adrian Bunk
71fc4c0c44 avr32 mustn't select HAVE_IDE
There's a libata based PATA driver for avr32, but no support for 
drivers/ide/ on avr32.

This patch fixes the following compile error:

<--  snip  -->

...
  CC [M]  drivers/ide/ide-cd.o
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/ide-cd.c:37:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/ide.h:209:21: error: asm/ide.h: No such file or directory
make[3]: *** [drivers/ide/ide-cd.o] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-17 01:14:32 +02:00