Commit Graph

2424 Commits

Author SHA1 Message Date
David Brownell
a9a84c37d1 atmel_lcdfb: backlight control
On the sam9 EK boards, the LCD backlight is hooked up to a PWM output from
the LCD controller.  It's controlled by "contrast" registers though.

This patch lets boards declare that they have that kind of backlight
control.  The driver can then export this control, letting screenblank and
other operations actually take effect ...  reducing the typically
substantial power drain from the backlight.

Note that it's not fully cooked
  - doesn't force backlight off during system suspend
  - the "power" and "blank" events may not be done right
This should be easily added in the future.

[nicolas.ferre@atmel.com: remove unneeded inline and rename functions]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:41:16 -08:00
Benjamin Herrenschmidt
5e5419734c add mm argument to pte/pmd/pud/pgd_free
(with Martin Schwidefsky <schwidefsky@de.ibm.com>)

The pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as
first argument.  The free functions do not get the mm_struct argument.  This
is 1) asymmetrical and 2) to do mm related page table allocations the mm
argument is needed on the free function as well.

[kamalesh@linux.vnet.ibm.com: i386 fix]
[akpm@linux-foundation.org: coding-syle fixes]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:18 -08:00
Philipp Zabel
1c44f5f16f gpiolib support for the PXA architecture
This adds gpiolib support for the PXA architecture:
  - move all GPIO API functions from generic.c into gpio.c
  - convert the gpio_get/set_value macros into inline functions

This makes it easier to hook up GPIOs provided by external chips like
ASICs and CPLDs.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Eric Miao <eric.miao@marvell.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Minor ARM fixup from David Brownell folded into this ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:13 -08:00
David Brownell
a9c5fff542 gpiolib: add drivers/gpio directory
Add an empty drivers/gpio directory for gpiolib infrastructure and GPIO
expanders.  It will be populated by later patches.

This won't be the only place to hold such gpio_chip code.  Many external chips
add a few GPIOs as secondary functionality (such as MFD drivers) and platform
code frequently needs to closely integrate GPIO and IRQ support.

This is placed *early* in the build/link sequence since it's common for other
drivers to depend on GPIOs to do their work, so they must be initialized early
in the device_initcall() sequence.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: Eric Miao <eric.miao@marvell.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:12 -08:00
Davide Libenzi
4d672e7ac7 timerfd: new timerfd API
This is the new timerfd API as it is implemented by the following patch:

int timerfd_create(int clockid, int flags);
int timerfd_settime(int ufd, int flags,
		    const struct itimerspec *utmr,
		    struct itimerspec *otmr);
int timerfd_gettime(int ufd, struct itimerspec *otmr);

The timerfd_create() API creates an un-programmed timerfd fd.  The "clockid"
parameter can be either CLOCK_MONOTONIC or CLOCK_REALTIME.

The timerfd_settime() API give new settings by the timerfd fd, by optionally
retrieving the previous expiration time (in case the "otmr" parameter is not
NULL).

The time value specified in "utmr" is absolute, if the TFD_TIMER_ABSTIME bit
is set in the "flags" parameter.  Otherwise it's a relative time.

The timerfd_gettime() API returns the next expiration time of the timer, or
{0, 0} if the timerfd has not been set yet.

Like the previous timerfd API implementation, read(2) and poll(2) are
supported (with the same interface).  Here's a simple test program I used to
exercise the new timerfd APIs:

http://www.xmailserver.org/timerfd-test2.c

[akpm@linux-foundation.org: coding-style cleanups]
[akpm@linux-foundation.org: fix ia64 build]
[akpm@linux-foundation.org: fix m68k build]
[akpm@linux-foundation.org: fix mips build]
[akpm@linux-foundation.org: fix alpha, arm, blackfin, cris, m68k, s390, sparc and sparc64 builds]
[heiko.carstens@de.ibm.com: fix s390]
[akpm@linux-foundation.org: fix powerpc build]
[akpm@linux-foundation.org: fix sparc64 more]
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:07 -08:00
Linus Torvalds
9ef9dc69d4 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
  [ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
  [ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
  [ARM] 4820/1: RealView: Select the timer IRQ at run-time
  [ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
  [ARM] 4818/1: RealView: Add core-tile detection
  [ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
  [ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
  [ARM] 4815/1: RealView: Add clockevents suport for the local timers
  [ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
  [ARM] 4813/1: Add SMP helper functions for clockevents support
  [ARM] 4812/1: RealView: clockevents support for the RealView platforms
  [ARM] 4811/1: RealView: clocksource support for the RealView platforms
  [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags
  [ARM] 4798/1: pcm027: fix missing header file
  [ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1
  [ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h
  [ARM] pxa: introduce sysdev for pxa3xx static memory controller
  [ARM] pxa: add preliminary suspend/resume code for pxa3xx
  [ARM] pxa: introduce sysdev for GPIO register saving/restoring
  [ARM] pxa: introduce sysdev for IRQ register saving/restoring
  ...
2008-02-04 15:29:53 -08:00
Russell King
0d899e1b00 Merge branches 'at91', 'ixp', 'master', 'misc', 'pxa' and 'realview' into devel
* at91:
  [ARM] 4802/1: Fix typo and remove vague comment
  [ARM] 4660/3: at91: allow selecting UART for early kernel messages
  [ARM] 4739/1: at91sam9263: make gpio bank C and D irqs work

* ixp:
  [ARM] 4809/2: ixp4xx: Merge dsmg600-power.c into dsmg600-setup.c
  [ARM] 4808/2: ixp4xx: Merge nas100d-power.c into nas100d-setup.c
  [ARM] 4807/2: ixp4xx: Merge nslu2-power.c into nslu2-setup.c
  [ARM] 4806/1: ixp4xx: Ethernet support for the nslu2 and nas100d boards
  [ARM] 4805/1: ixp4xx: Use leds-gpio driver instead of IXP4XX-GPIO-LED driver
  [ARM] 4715/2: Ethernet support for IXDP425 boards
  [ARM] 4714/2: Headers for IXP4xx built-in Ethernet and WAN drivers
  [ARM] 4713/3: Adds drivers for IXP4xx QMgr and NPE features
  [ARM] 4712/2: Adds functions to read and write IXP4xx "feature" bits
  [ARM] 4774/2: ixp4xx: Register dsmg600 rtc i2c_board_info
  [ARM] 4773/2: ixp4xx: Register nas100d rtc i2c_board_info
  [ARM] 4772/2: ixp4xx: Register nslu2 rtc i2c_board_info
  [ARM] 4769/2: ixp4xx: Button updates for the dsmg600 board
  [ARM] 4768/2: ixp4xx: Button and LED updates for the nas100d board
  [ARM] 4767/2: ixp4xx: Add bitops.h include to io.h
  [ARM] 4766/2: ixp4xx: Update ixp4xx_defconfig, enabling all supported boards

* master:
  [ARM] 4810/1: - Fix 'section mismatch' building warnings
  [ARM] xtime_seqlock: fix more ARM machines for xtime deadlocking
  [ARM] 21285 serial: fix build error

* misc:
  [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags

* pxa:
  [ARM] 4798/1: pcm027: fix missing header file
  [ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1
  [ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h
  [ARM] pxa: introduce sysdev for pxa3xx static memory controller
  [ARM] pxa: add preliminary suspend/resume code for pxa3xx
  [ARM] pxa: introduce sysdev for GPIO register saving/restoring
  [ARM] pxa: introduce sysdev for IRQ register saving/restoring
  [ARM] pxa: fix the warning of undeclared "struct pxaohci_platform_data"
  [ARM] pxa: change set_kset_name() to direct name assignment for MFP sysclass

* realview:
  [ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
  [ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
  [ARM] 4820/1: RealView: Select the timer IRQ at run-time
  [ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
  [ARM] 4818/1: RealView: Add core-tile detection
  [ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
  [ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
  [ARM] 4815/1: RealView: Add clockevents suport for the local timers
  [ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
  [ARM] 4813/1: Add SMP helper functions for clockevents support
  [ARM] 4812/1: RealView: clockevents support for the RealView platforms
  [ARM] 4811/1: RealView: clocksource support for the RealView platforms
2008-02-04 17:54:39 +00:00
Catalin Marinas
41579f49da [ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
This patch changes the REALVIEW_MPCORE configuration option to
REALVIEW_EB_ARM11MP since this is only specific to RealView/EB.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:28 +00:00
Catalin Marinas
39e823e35b [ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
This patch removes the TWD_BASE macro used to set up and configure the
local timers on ARM11MPCore. The twd_base_addr and twd_size variables
are defined in localtimer.c and set from the realview_eb_init function.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:27 +00:00
Catalin Marinas
8cc4c5488a [ARM] 4820/1: RealView: Select the timer IRQ at run-time
This patch sets the timer IRQ at run-time by moving the sys_timer
structure and the timer_init function to the realview_eb.c file. This
allows multiple RealView platforms to be compiled in the same kernel
image.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:26 +00:00
Catalin Marinas
c4057f5260 [ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
This patch modifies the get_irqnr_preamble macro to work with multiple
platforms at run-time by reading the address of the GIC controller from
the gic_cpu_base_addr variable. This variable is defined in core.c and
intialised in realview_eb.c (gic_init_irq).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:25 +00:00
Catalin Marinas
7dd19e755d [ARM] 4818/1: RealView: Add core-tile detection
This patch adds the core-tile detection and only enables devices if the
corresponding tile is present. It currently detects the ARM11MPCore via
the core_tile_eb11mp() macro.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:24 +00:00
Catalin Marinas
0fc2a1616f [ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
This patch moves the IRQ and DMA definitions from core.h into
realview_eb.c since they are platform-specific. It adds a
realview_eb11mp_fixup function to adjust the IRQ numbers if the
ARM11MPCore tile is fitted. The realview_smc91x_device is also moved
from core.c into realview_eb.c.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:23 +00:00
Catalin Marinas
356cb470b8 [ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
This patch moves the platform specific definitions from platform.h into
the board-eb.h file. It drops the INT_* definitions as they are no
longer used in irqs.h (moved to board-eb.h). It renames REALVIEW_*
macros to REALVIEW_EB_* or REALVIEW_EB11MP_* to distinguish between
standard EB and EB + the ARM11MPCore tile. The platform.h file contains
common definitions to the RealView platforms and it is only directly
included in board-*.h files.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:21 +00:00
Catalin Marinas
93c2904d50 [ARM] 4815/1: RealView: Add clockevents suport for the local timers
This patch registers the local timers on ARM11MPCore as clock event
devices. The clock device can be set up as periodic or oneshot.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:20 +00:00
Catalin Marinas
a8655e83fc [ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
This patch adds dummy local timers for each CPU so that the board clock
device is used to broadcast events to the other CPUs. The patch also
adds the declaration for the dummy_timer_setup function (the equivalent
of local_timer_setup when CONFIG_LOCAL_TIMERS is not set).

Due to the way clockevents work, the dummy timer on the first CPU has to
be registered before the board timer.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:19 +00:00
Catalin Marinas
3e45999096 [ARM] 4813/1: Add SMP helper functions for clockevents support
This patch adds the smp_call_function_single and smp_timer_broadcast
functions and modifies ipi_timer to call the platform-specific function
local_timer_interrupt.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:18 +00:00
Catalin Marinas
ae30ceac3c [ARM] 4812/1: RealView: clockevents support for the RealView platforms
The patch updates the RealView code to the clockevents infrastructure.
The SMP support is implemented in subsequent patches. Based on the
Versatile implementation by Kevin Hilman.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:17 +00:00
Catalin Marinas
85802afeb0 [ARM] 4811/1: RealView: clocksource support for the RealView platforms
The patch updates the RealView platform code to use the generic
clocksource infrastructure for basic time keeping. Based on the
Versatile implementation by Kevin Hilman.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:16 +00:00
Linus Torvalds
f5bb3a5e9d Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (79 commits)
  Jesper Juhl is the new trivial patches maintainer
  Documentation: mention email-clients.txt in SubmittingPatches
  fs/binfmt_elf.c: spello fix
  do_invalidatepage() comment typo fix
  Documentation/filesystems/porting fixes
  typo fixes in net/core/net_namespace.c
  typo fix in net/rfkill/rfkill.c
  typo fixes in net/sctp/sm_statefuns.c
  lib/: Spelling fixes
  kernel/: Spelling fixes
  include/scsi/: Spelling fixes
  include/linux/: Spelling fixes
  include/asm-m68knommu/: Spelling fixes
  include/asm-frv/: Spelling fixes
  fs/: Spelling fixes
  drivers/watchdog/: Spelling fixes
  drivers/video/: Spelling fixes
  drivers/ssb/: Spelling fixes
  drivers/serial/: Spelling fixes
  drivers/scsi/: Spelling fixes
  ...
2008-02-04 07:58:52 -08:00
Richard Purdie
4cd9d6f774 [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags
Currently, the atags used by kexec are fixed to the ones originally used
to boot the kernel. This is less than ideal as changing the commandline,
initrd and other options would be a useful feature.

This patch exports the atags used for the current kernel to userspace
through an "atags" file in procfs. The presence of the file is
controlled by its own Kconfig option and cleans up several ifdef blocks
into a separate file. The tags for the new kernel are assumed to be at
a fixed location before the kernel image itself. The location of the
tags used to boot the original kernel is unimportant and no longer
saved.

Based on a patch from Uli Luckas <u.luckas@road.de>

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Uli Luckas <u.luckas@road.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:21:03 +00:00
Juergen Beisert
c9a28fa7b9 [ARM] 4798/1: pcm027: fix missing header file
This patch adds a PXA2xx specific header file to control chip setup.
Without, the PCM027 BSP can't be built.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:34 +00:00
eric miao
6a0bd09dcd [ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1
The is caused by the patch below:

  [ARM] 4737/1: Refactor corgi_lcd to improve readability + bugfix

It renamed the confusing get_hsync_len() to get_hsync_invperiod(), which
unfortunately leaves poodle.c un-modified.

Signed-off-by: eric miao <eric.miao@marvell.com>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:34 +00:00
eric miao
bb548dd432 [ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h
Some machines are missing "pxa2xx-regs.h" due to the following patch:

  [ARM] pxa: move memory controller registers into pxa2xx-regs.h

This patch fixes the issue by including the pxa2xx-regs.h where necessary.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:34 +00:00
eric miao
b1d907f9cc [ARM] pxa: introduce sysdev for pxa3xx static memory controller
Introduce a sysdev for pxa3xx static memory controller, mainly
for register saving/restoring in PM

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:33 +00:00
eric miao
c4d1fb627f [ARM] pxa: add preliminary suspend/resume code for pxa3xx
1. clear RDH bit after resuming back from D3, otherwise, the multi function
   pins will retain the low power state

2. save/restore essential system registers

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:33 +00:00
eric miao
16dfdbf038 [ARM] pxa: introduce sysdev for GPIO register saving/restoring
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:33 +00:00
eric miao
c016550490 [ARM] pxa: introduce sysdev for IRQ register saving/restoring
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:33 +00:00
eric miao
cd5604d561 [ARM] pxa: fix the warning of undeclared "struct pxaohci_platform_data"
The header file <asm/arch/ohci.h> was missing in the original file,
include it to fix the warning.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:32 +00:00
eric miao
14271a705a [ARM] pxa: change set_kset_name() to direct name assignment for MFP sysclass
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:17:32 +00:00
Guennadi Liakhovetski
fa3218d859 [ARM] 4660/3: at91: allow selecting UART for early kernel messages
Currently early kernel messages, i.e., those from uncompression, go to the
debugging UART. And if it is enabled in the platform configuration, but
not initialized by the bootloader, the machine hangs, waiting for UART
status change. Besides, having those messages on another UART - typically
the console UART - may be preferrable. This patch allows selecting the
UART in kernel configuration.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:16:39 +00:00
David Brownell
e83aff58bf [ARM] 4739/1: at91sam9263: make gpio bank C and D irqs work
On the at91sam9263, IRQs for GPIO banks C and D don't currently work.
This is because banks C, D, and E share one clock and toplevel IRQ, but
the AT91 code setting up and handling GPIO IRQs expects no sharing.
This patch:

 - Fixes GPIO IRQ setup and handling to cope with GPIO banks that are
   shared like on sam9263 chips, by setting up a list of those banks
   and making the IRQ dispatching logic scan that list.

 - Precomputes the address of each bank's registers, saving it with
   other per-bank data so that it no longer needs to be constantly
   recomputed during IRQs and other GPIO operations.  That shrinks
   hot-path code, while helping the GPIO bank irq updates.

 - Fixes a minor bug where IRQ_TYPE_NONE was wrongly rejected (it just
   means "use the default", which is "both edges" here).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:16:39 +00:00
Rod Whitby
43816bcb72 [ARM] 4809/2: ixp4xx: Merge dsmg600-power.c into dsmg600-setup.c
There is no reason to have power control in a separate file from the
board setup code.  Merge it back into the board setup file and remove
superfluous header includes.

--

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:27 +00:00
Rod Whitby
c7d1623e58 [ARM] 4808/2: ixp4xx: Merge nas100d-power.c into nas100d-setup.c
There is no reason to have power control in a separate file from the
board setup code.  Merge it back into the board setup file and remove
superfluous header includes.

--

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:27 +00:00
Rod Whitby
0929ac3ea4 [ARM] 4807/2: ixp4xx: Merge nslu2-power.c into nslu2-setup.c
There is no reason to have power control in a separate file from the
board setup code.  Merge it back into the board setup file, removing
superfluous header includes and removing superfluous constants from
the machine header file.

--

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:26 +00:00
Rod Whitby
b7edc84a96 [ARM] 4806/1: ixp4xx: Ethernet support for the nslu2 and nas100d boards
Enables the new ixp4xx qmgr and npe drivers in ixp4xx_defconfig.

Sets up the corresponding platform data for the nslu2 and nas100d
boards, and reads the ethernet MAC address from the internal flash.

Tested on both little-endian and big-endian kernels.

Tested-by: Tom King <tom@websb.net>

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Michael Westerhof <mwester@dls.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:26 +00:00
Rod Whitby
1208ebf25b [ARM] 4805/1: ixp4xx: Use leds-gpio driver instead of IXP4XX-GPIO-LED driver
These are the only three boards to use the IXP4XX-GPIO-LED driver, and
they can all use the new leds-gpio driver instead with no change in
functionality.

--

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:26 +00:00
Rod Whitby
7822591370 [ARM] 4715/2: Ethernet support for IXDP425 boards
Adds IXDP425 platform support for two built-in 10/100 Ethernet ports.

This patch will do nothing until the actual Ethernet driver is
also included.

Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:25 +00:00
Krzysztof Halasa
82a96f5790 [ARM] 4713/3: Adds drivers for IXP4xx QMgr and NPE features
This patch adds drivers for IXP4xx hardware Queue Manager and for
Network Processor Engines. Requires patch #4712 (reading/writing
CPU feature (aka fuse) bits).

Posted to linux-arm-kernel on 2 Dec 2007 and revised.

Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:25 +00:00
Krzysztof Halasa
c18f65816e [ARM] 4712/2: Adds functions to read and write IXP4xx "feature" bits
Adds functions to read and write IXP4xx "feature" (aka "fuse")
bits, containing information about available/enabled CPU features.

The uncompress.h included by boot/compressed/misc.c resides in
a different space than rest of the kernel and thus can't use
asm/hardware.h (including asm/arch/cpu.h - which, in turn, may use
EXPORTed symbol "processor_id").

Posted to linux-arm-kernel on 2 Dec 2007 and revised.

Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:25 +00:00
Rod Whitby
a9a424ce9a [ARM] 4774/2: ixp4xx: Register dsmg600 rtc i2c_board_info
Register the i2c board info related to the RTC chip on the dsmg600
board to allow it to be found automatically on boot.

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:24 +00:00
Rod Whitby
400d823148 [ARM] 4773/2: ixp4xx: Register nas100d rtc i2c_board_info
Register the i2c board info related to the RTC chip on the nas100d
board to allow it to be found automatically on boot.

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:24 +00:00
Rod Whitby
e28067d533 [ARM] 4772/2: ixp4xx: Register nslu2 rtc i2c_board_info
Register the i2c board info related to the RTC chip on the nslu2 board
to allow it to be found automatically on boot.

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:24 +00:00
Rod Whitby
2bea80187f [ARM] 4769/2: ixp4xx: Button updates for the dsmg600 board
* Remove the superfluous declaration of ctrl_alt_del().
 * Convert GPIO and IRQ handling to use the <asm/gpio.h> api.
 * Perform the reset on the release of the power button, so that
   NAS devices which have been set to auto-power-on (by solder
   bridging the power button) do not continuously power cycle.
 * Remove all superflous constants from dsmg600.h

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:24 +00:00
Rod Whitby
14645ebabd [ARM] 4768/2: ixp4xx: Button and LED updates for the nas100d board
* Convert GPIO and IRQ handling to use the <asm/gpio.h> api.
 * Perform the reset only after the power button has been held down
   for at least two seconds.  Do the reset on the release of the power
   button, so that NAS devices which have been set to auto-power-on (by
   solder bridging the power button) do not continuously power cycle.
 * Remove all superflous constants from nas100d.h
 * Add LED constants to nas100d.h while we're there.
 * Update the board LED setup code to use those constants.

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:23 +00:00
Rod Whitby
95053aec4d [ARM] 4766/2: ixp4xx: Update ixp4xx_defconfig, enabling all supported boards
This updates the defconfig for the ixp4xx machine in arch/arm/config
taking all the defaults, with the following additions:

1) Enable support for the nslu2, loft, gateway7001, wg302v2,
   dsmg600, and gtwx5715 boards.
2) Enable EABI, OABI, HOTPLUG and FW_LOADER.
3) Enable the RTC subsystem, with drivers for the RTC chips on the
   nslu2 (x1205) and nas100d/dsmg600 (pcf8563) boards.
4) Enable the LEDS subsystem to support the nslu2, nas100d and
   dsmg600 boards.  Enable the ixp4xx beeper driver.
5) Enable the USB subsystem, USB host driver support and USB mass
   storage support (required for boot disk on nslu2 board).
6) Enable the ATA subsystem, with drivers for the nas100d/dsmg600
   (pata_artop) and avila (ixp4xx_cf) boards.

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:15:23 +00:00
Kristoffer Ericson
85e6c7a7db [ARM] 4810/1: - Fix 'section mismatch' building warnings
Warning message :
WARNING: vmlinux.o(.text+0x9afc): Section mismatch: reference to .init.text:sa1110_mb_enable (between 'sa1111_probe' and 'sa1111_remove')
WARNING: vmlinux.o(.text+0x13b1ac): Section mismatch: reference to .init.text:pcmcia_jornada720_init (between 'pcmcia_probe' and 'pcmcia_remove')

* fixes the 'section mismatch' building warnings for target sa1100. Solution is __init -> __devinit. Thanks to Randy Dunlap for pointing out the solution.

Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:14:07 +00:00
Peter Zijlstra
66a2c077c3 [ARM] xtime_seqlock: fix more ARM machines for xtime deadlocking
move update_process_times() out from under xtime_lock.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:14:07 +00:00
Joe Perches
87b9bcd5ab arch/arm/: Spelling fixes
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
2008-02-03 16:49:43 +02:00
Adrian Bunk
03502faa25 remove Documentation/smp.txt
After seeing the filename I'd have expected something about the
implementation of SMP in the Linux kernel - not some notes on kernel
configuration and building trivialities noone would search at this
place.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Alan Cox <alan@redhat.com>
2008-02-03 15:50:21 +02:00