Commit graph

269 commits

Author SHA1 Message Date
Marc Zyngier
34ae6c96a6 ARM: 7298/1: realview: fix mapping of MPCore private memory region
Since commit 0536bdf33f (ARM: move iotable mappings within
the vmalloc region), the RealView PB11MP cannot boot anymore.

This is caused by the way the mappings are described on this
platform (define replaced by hex values for clarity):

{	/* GIC CPU interface mapping */
        .virtual        = IO_ADDRESS(0x1F000100),
        .pfn            = __phys_to_pfn(0x1F000100),
        .length         = SZ_4K,
        .type           = MT_DEVICE,
}, {	/* GIC distributor mapping */
        .virtual        = IO_ADDRESS(0x1F001000),
        .pfn            = __phys_to_pfn(0x1F001000),
        .length         = SZ_4K,
        .type           = MT_DEVICE,
}

The first mapping ends up reserving two pages, and clashes with
the second one, which triggers a BUG_ON in vm_area_add_early().

In order to solve this problem, treat the MPCore private memory
region (containing the SCU, the GIC and the TWD) as a single region,
as described in the TRM:
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0360f/CACGDJJC.html

The EB11MP is converted the same way, even if it manages to avoid
the problem.

Tested on both PB11MP and EB11MP.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-25 09:24:36 +00:00
Will Deacon
eb50439b92 ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP
It turns out that the logical CPU mapping is useful even when !CONFIG_SMP
for manipulation of devices like interrupt and power controllers when
running a UP kernel on a CPU other than 0. This can happen when kexecing
a UP image from an SMP kernel.

In the future, multi-cluster systems running AMP configurations will
require something similar for mapping cluster IDs, so it makes sense to
decouple this logic in preparation for this support.

Acked-by: Yang Bai <hamo.by@gmail.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reported-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-23 10:20:05 +00:00
Olof Johansson
8b0f6d12de Merge branch 'fixes-for-arm-soc' of git://sources.calxeda.com/kernel/linux into fixes
* 'fixes-for-arm-soc' of git://sources.calxeda.com/kernel/linux:
  ARM: make BSYM macro assembly only
  ARM: highbank: remove incorrect BSYM usage
  ARM: imx: remove incorrect BSYM usage
  ARM: exynos: remove incorrect BSYM usage
  ARM: ux500: add missing ENDPROC to headsmp.S
  ARM: msm: Add missing ENDPROC to headsmp.S
  ARM: versatile: Add missing ENDPROC to headsmp.S
2012-01-16 22:46:06 -08:00
Pawel Moll
764a579fb5 ARM: versatile: Add missing ENDPROC to headsmp.S
Once the ENDPROC is in place, BSYM() in not longer necessary
to get correct pointer to versatile_secondary_startup().

Tested-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Dave Martin <dave.martin@linaro.org>
2012-01-16 08:35:25 -06:00
Linus Torvalds
f5e4e20faa 2nd round of GPIO changes for v3.3 merge window
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Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6

2nd round of GPIO changes for v3.3 merge window

* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6:
  GPIO: sa1100: implement proper gpiolib gpio_to_irq conversion
  gpio: pl061: remove combined interrupt
  gpio: pl061: convert to use generic irq chip
  GPIO: add bindings for managed devices
  ARM: realview: convert pl061 no irq to 0 instead of -1
  gpio: pl061: convert to use 0 for no irq
  gpio: pl061: use chained_irq_* functions in irq handler
  GPIO/pl061: Add suspend resume capability
  drivers/gpio/gpio-tegra.c: use devm_request_and_ioremap
2012-01-14 13:25:23 -08:00
Linus Torvalds
7affca3537 Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (73 commits)
  arm: fix up some samsung merge sysdev conversion problems
  firmware: Fix an oops on reading fw_priv->fw in sysfs loading file
  Drivers:hv: Fix a bug in vmbus_driver_unregister()
  driver core: remove __must_check from device_create_file
  debugfs: add missing #ifdef HAS_IOMEM
  arm: time.h: remove device.h #include
  driver-core: remove sysdev.h usage.
  clockevents: remove sysdev.h
  arm: convert sysdev_class to a regular subsystem
  arm: leds: convert sysdev_class to a regular subsystem
  kobject: remove kset_find_obj_hinted()
  m86k: gpio - convert sysdev_class to a regular subsystem
  mips: txx9_sram - convert sysdev_class to a regular subsystem
  mips: 7segled - convert sysdev_class to a regular subsystem
  sh: dma - convert sysdev_class to a regular subsystem
  sh: intc - convert sysdev_class to a regular subsystem
  power: suspend - convert sysdev_class to a regular subsystem
  power: qe_ic - convert sysdev_class to a regular subsystem
  power: cmm - convert sysdev_class to a regular subsystem
  s390: time - convert sysdev_class to a regular subsystem
  ...

Fix up conflicts with 'struct sysdev' removal from various platform
drivers that got changed:
 - arch/arm/mach-exynos/cpu.c
 - arch/arm/mach-exynos/irq-eint.c
 - arch/arm/mach-s3c64xx/common.c
 - arch/arm/mach-s3c64xx/cpu.c
 - arch/arm/mach-s5p64x0/cpu.c
 - arch/arm/mach-s5pv210/common.c
 - arch/arm/plat-samsung/include/plat/cpu.h
 - arch/powerpc/kernel/sysfs.c
and fix up cpu_is_hotpluggable() as per Greg in include/linux/cpu.h
2012-01-07 12:03:30 -08:00
Russell King
7b9dd47136 Merge branch 'restart' into for-linus
Conflicts:
	arch/arm/mach-exynos/cpu.c

The changes to arch/arm/mach-exynos/cpu.c were moved to
mach-exynos/common.c.
2012-01-05 13:25:27 +00:00
Russell King
f88b8979d2 ARM: restart: remove the now empty arch_reset()
Remove the now empty arch_reset() from all the mach/system.h includes,
and remove its callsite.  Remove arm_machine_restart() as this function
no longer does anything useful.

For samsung platforms, remove the include of mach/system-reset.h and
plat/system-reset.h from their respective mach/system.h headers as these
just define their arch_reset functions.  As a result, the s3c2410 and
plat-samsung system-reset.h files are no longer referenced, so remove
these files entirely.

Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-05 12:57:22 +00:00
Russell King
47cacdd4ed ARM: restart: realview: use new restart hook
Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-05 12:57:18 +00:00
Rob Herring
2b84112718 ARM: realview: convert pl061 no irq to 0 instead of -1
Drivers should use 0 for no irq, so convert realview platforms pl061
platform_data over to use 0.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Russell King <linux@arm.linux.org.uk>
2012-01-04 10:10:20 -06:00
Kay Sievers
edbaa603eb driver-core: remove sysdev.h usage.
The sysdev.h file should not be needed by any in-kernel code, so remove
the .h file from these random files that seem to still want to include
it.

The sysdev code will be going away soon, so this include needs to be
removed no matter what.

Cc: Jiandong Zheng <jdzheng@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: "Venkatesh Pallipadi
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
2011-12-21 16:26:03 -08:00
Russell King
df0bcfe0f8 Merge branch 'arm/common-kconfig-refactor+for-rmk' of git://git.linaro.org/people/dmart/linux-2.6-arm into devel-stable 2011-12-19 21:54:35 +00:00
Dave Martin
3b55658aef ARM: SMP: Refactor Kconfig to be more maintainable
Making SMP depend on (huge list of MACH_ and ARCH_ configs) is
bothersome to maintain and likely to lead to merge conflicts.

This patch moves the knowledge of which platforms are SMP-capable
to the individual machines.  To enable this, a new HAVE_SMP config
option is introduced to allow machines to indicate that they can
run in a SMP configuration.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
        (for nomadik, ux500)
Acked-by: Tony Lindgren <tony@atomide.com>
        (for omap)
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
        (for exynos)
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
        (for imx)
Acked-by: Olof Johansson <olof@lixom.net>
        (for tegra)
2011-12-19 13:47:39 +00:00
Dave Martin
ce5ea9f376 ARM: l2x0/pl310: Refactor Kconfig to be more maintainable
Making CACHE_L2X0 depend on (huge list of MACH_ and ARCH_ configs)
is bothersome to maintain and likely to lead to merge conflicts.

This patch moves the knowledge of which platforms have a L2x0 or
PL310 cache controller to the individual machines.  To enable this,
a new MIGHT_HAVE_CACHE_L2X0 config option is introduced to allow
machines to indicate that they may have such a cache controller
independently of each other.

Boards/SoCs which cannot reliably operate without the L2 cache
controller support will need to select CACHE_L2X0 directly from
their own Kconfigs instead.  This applies to some TrustZone-enabled
boards where Linux runs in the Normal World, for example.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
        (for cns3xxx)
Acked-by: Tony Lindgren <tony@atomide.com>
        (for omap)
Acked-by: Shawn Guo <shawn.guo@linaro.org>
        (for imx)
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
        (for exynos)
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
        (for imx)
Acked-by: Olof Johansson <olof@lixom.net>
        (for tegra)
2011-12-19 13:46:11 +00:00
Russell King
73829af71f Merge branch 'vmalloc' of git://git.linaro.org/people/nico/linux into devel-stable 2011-12-05 23:27:59 +00:00
Nicolas Pitre
d0e6b2236a ARM: big removal of now unused vmalloc.h files
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-11-26 19:21:29 -05:00
Rob Herring
3e28c80044 ARM: realview-eb11mp: fix map_desc alignment
REALVIEW_EB11MP_GIC_CPU_BASE is not 4KB aligned which causes an
overlapping mapping. Use REALVIEW_EB11MP_SCU_BASE instead which is
aligned.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-11-18 13:51:19 -05:00
Rob Herring
9ceceb652a ARM: realview: fix map_desc alignment
REALVIEW_PBX_TILE_GIC_CPU_BASE is not 4KB aligned which causes an
overlapping mapping. Use REALVIEW_PBX_TILE_SCU_BASE instead which is
aligned.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-11-18 13:51:19 -05:00
Marc Zyngier
1b99d9ccb5 ARM: RealView: convert to CONFIG_MULTI_IRQ_HANDLER
Convert the RealView platforms to be using the gic_handle_irq
function as their primary interrupt handler.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2011-11-15 18:13:59 +00:00
Linus Torvalds
6585dea1f9 Merge branch 'next/cross-platform' of git://git.linaro.org/people/arnd/arm-soc
* 'next/cross-platform' of git://git.linaro.org/people/arnd/arm-soc:
  arm/imx: use Kconfig choice for low-level debug UART selection
  ARM: realview: use Kconfig choice for debug UART selection
  ARM: plat-samsung: use Kconfig choice for debug UART selection
  ARM: versatile: convert logical CPU numbers to physical numbers
  ARM: ux500: convert logical CPU numbers to physical numbers
  ARM: shmobile: convert logical CPU numbers to physical numbers
  ARM: msm: convert logical CPU numbers to physical numbers
  ARM: exynos4: convert logical CPU numbers to physical numbers

Fix up trivial conflict (config DEBUG_S3C_UART move/split vs addition of
ARM_KPROBES_TEST option) in arch/arm/Kconfig.debug
2011-11-01 20:34:22 -07:00
Linus Torvalds
1fdb24e969 Merge branch 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (178 commits)
  ARM: 7139/1: fix compilation with CONFIG_ARM_ATAG_DTB_COMPAT and large TEXT_OFFSET
  ARM: gic, local timers: use the request_percpu_irq() interface
  ARM: gic: consolidate PPI handling
  ARM: switch from NO_MACH_MEMORY_H to NEED_MACH_MEMORY_H
  ARM: mach-s5p64x0: remove mach/memory.h
  ARM: mach-s3c64xx: remove mach/memory.h
  ARM: plat-mxc: remove mach/memory.h
  ARM: mach-prima2: remove mach/memory.h
  ARM: mach-zynq: remove mach/memory.h
  ARM: mach-bcmring: remove mach/memory.h
  ARM: mach-davinci: remove mach/memory.h
  ARM: mach-pxa: remove mach/memory.h
  ARM: mach-ixp4xx: remove mach/memory.h
  ARM: mach-h720x: remove mach/memory.h
  ARM: mach-vt8500: remove mach/memory.h
  ARM: mach-s5pc100: remove mach/memory.h
  ARM: mach-tegra: remove mach/memory.h
  ARM: plat-tcc: remove mach/memory.h
  ARM: mach-mmp: remove mach/memory.h
  ARM: mach-cns3xxx: remove mach/memory.h
  ...

Fix up mostly pretty trivial conflicts in:
 - arch/arm/Kconfig
 - arch/arm/include/asm/localtimer.h
 - arch/arm/kernel/Makefile
 - arch/arm/mach-shmobile/board-ap4evb.c
 - arch/arm/mach-u300/core.c
 - arch/arm/mm/dma-mapping.c
 - arch/arm/mm/proc-v7.S
 - arch/arm/plat-omap/Kconfig
largely due to some CONFIG option renaming (ie CONFIG_PM_SLEEP ->
CONFIG_ARM_CPU_SUSPEND for the arm-specific suspend code etc) and
addition of NEED_MACH_MEMORY_H next to HAVE_IDE.
2011-10-28 12:02:27 -07:00
Linus Torvalds
ca90666287 Merge branch 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (43 commits)
  ARM: 7135/1: ep93xx: bring back missing <mach/gpio.h>
  ARM: 7104/1: plat-pxa: break out GPIO driver specifics
  ARM: 7103/1: plat-pxa: move PXA GPIO driver to GPIO subsystem
  ARM: 7042/3: mach-ep93xx: break out GPIO driver specifics
  ARM: 7101/1: arm/tegra: Replace <mach/gpio.h> with <mach/gpio-tegra.h>
  ARM: 7094/1: arm/tegra: Move EN_VDD_1V05_GPIO to board-harmony.h
  ARM: 7083/1: rewrite U300 GPIO to use gpiolib
  ARM: 7074/1: gpio: davinci: eliminate unused variable warnings
  ARM: 7063/1: Orion: gpio: add missing include of linux/types.h
  ARM: 7055/1: arm/tegra: mach/gpio.h: include linux/types.h to fix build
  ARM: 7054/1: arm/tegra: Delete custom gpio_to_irq, and irq_to_gpio
  ARM: 7053/1: gpio/tegra: Implement gpio_chip.to_irq
  ARM: 7052/1: gpio/tegra: Remove use of irq_to_gpio
  ARM: 7057/1: mach-pnx4008: rename GPIO header
  ARM: 7056/1: plat-nomadik: kill off <plat/gpio.h>
  ARM: 7050/1: mach-sa1100: delete irq_to_gpio() function
  ARM: 7049/1: mach-sa1100: move SA1100 GPIO driver to GPIO subsystem
  ARM: 7045/1: mach-lpc32xx: break out GPIO driver specifics
  ARM: 7044/1: mach-lpc32xx: move LPC32XX GPIO driver to GPIO subsystem
  ARM: 7043/1: mach-ixp2000: rename GPIO header
  ...

Fix up trivial conflicts in arch/arm/mach-u300/Kconfig manually
2011-10-27 08:39:10 +02:00
Russell King
bdf4e94823 Merge branch 'misc' into for-linus
Conflicts:
	arch/arm/mach-integrator/integrator_ap.c
2011-10-25 08:19:59 +01:00
Russell King
34471a9168 Merge branch 'ppi-irq-core-for-rmk' of git://github.com/mzyngier/arm-platforms into devel-stable 2011-10-23 14:42:30 +01:00
Russell King
a06f916b7a ARM: smp: fix clipping of number of CPUs
Rather than clipping the number of CPUs using the compile-time NR_CPUS
constant, use the runtime nr_cpu_ids value instead.  This allows the
nr_cpus command line option to work as expected.

Cc: <stable@kernel.org>
Reported-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-20 22:06:57 +01:00
Arnd Bergmann
97c24c1aa4 Merge branches 'cross-platform/debug_ll' and 'cross-platform/cpu-mapping' into next/cross-platform 2011-10-20 16:07:27 +02:00
Russell King
cefd3e71ef Merge branch 'mach_memory_h' of git://git.linaro.org/people/nico/linux into devel-stable 2011-10-18 13:40:54 +01:00
Will Deacon
1285b8f89a ARM: realview: use Kconfig choice for debug UART selection
Now that the DEBUG_LL UART can be selected by a Kconfig choice, simplify
the #ifdefery in debug-macro.S and add entries to the top-level
Kconfig.debug instead.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-10-17 10:02:52 +01:00
Will Deacon
4a139b6470 ARM: versatile: convert logical CPU numbers to physical numbers
This patch uses the new cpu_logical_map() macro for converting logical
CPU numbers into physical numbers when dealing with the pen_release
variable in the SMP boot and CPU hotplug paths.

Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-10-17 10:01:11 +01:00
Linus Walleij
0ec5a95bbb ARM: 6217/4: mach-realview: expose PB1176 ROM using physmap and map_rom
This exposes the PB1176 ROM if you compile in the MTD physmap
mapping and also the map_rom chiptype.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-17 09:13:41 +01:00
Russell King
0744a3ee37 ARM: platform fixups: remove mdesc argument to fixup function
Get rid of the mdesc pointer in the fixup function call.  No one uses
the mdesc pointer, it shouldn't be modified anyway, and we can't wrap
it, so let's remove it.

Platform files found by:

  $ regexp=$(git grep -h '\.fixup.*=' arch/arm |
		sed 's!.*= *\([^,]*\),* *!\1!' | sort -u |
		tr '\n' '|' | sed 's,|$,,;s,|,\\|,g')
  $ git grep $regexp arch/arm

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-17 09:13:41 +01:00
Sascha Hauer
40c6d8aee4 ARM: 7022/1: allow to detect conflicting zreladdrs
Boards used to specify zreladdr in their Makefile.boot with
zreladdr-y := x, so conflicting zreladdrs were silently overwritten.
This patch changes this to zreladdr-y += x, so that we end
up with multiple words in zreladdr in such a case. We can
detect this later and complain if necessary.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-17 09:12:40 +01:00
Nicolas Pitre
639da5ee37 ARM: add an extra temp register to the low level debugging addruart macro
Some platforms (like OMAP not to name it) are doing rather complicated
hacks just to determine the base UART address to use.  Let's give their
addruart macro some slack by providing an extra work register which will
allow for much needed cleanups.

This is basically a no-op as this commit is only adding the extra argument
to the macro but no one is using it yet.

Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org>
Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-09-26 10:11:25 -04:00
Russell King
4722cd7741 Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6-wd into devel-stable
Conflicts:
	arch/arm/mach-imx/mach-cpuimx27.c
2011-09-16 21:45:16 +01:00
Nicolas Pitre
9ddea57eb7 ARM: mach-realview: convert boot_params to atag_offset
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-08-21 17:15:08 -04:00
Will Deacon
5cb843ca0f ARM: realview: ensure visibility of writes during reset
The various reset routines in mach-realview rely on an FPGA to
power-cycle the board after writing some magic runes to memory-mapped
registers.

This patch adds a dsb() following the writes, so that they become
visible before we mdelay(1000) in the arch_reset code. Without this
patch, the timeout would expire sporadically, causing the reset to fail.

Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-08-12 15:40:57 +01:00
Russell King
8f3c4537bb ARM: gpio: make trivial GPIOLIB implementation the default
Rather than marking the mach/gpio.h header files which want to use the
trivial GPIOLIB implementation, mark those which do not want to use it
instead.  This means that by default, you get the trivial implementation
and only have to do something extra if you need to.  This should
encourage the use of the trivial default implementation.

As an additional bonus, several gpio.h header files become empty.

Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-12 08:54:19 +01:00
Russell King
01e7dc89d0 ARM: gpio: consolidate gpio_to_irq
Many of the gpio_to_irq implementations use the gpiolib version of this
function.  Provide the standard gpiolib gpio_to_irq() for everyone, but
allow platforms to override it if they wish.  Add the neccessary
overrides for those platforms which do not use the standard definition.

Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-12 08:54:05 +01:00
Russell King
22fe678376 ARM: gpio: consolidate trivial gpiolib implementations
Consolidate 24 trivial gpiolib implementions out of mach/gpio.h
into asm/gpio.h.  This is basically the include of asm-generic/gpio.h
and the definition of gpio_get_value, gpio_set_value, and gpio_cansleep
as described in Documentation/gpio.txt

Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: David Brown <davidb@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-12 08:53:15 +01:00
Russell King
3ad55155b2 Merge branch 'devel-stable' into for-next
Conflicts:
	arch/arm/kernel/entry-armv.S
2011-07-22 23:09:07 +01:00
Nicolas Pitre
00e9125e06 ARM: mach-realview: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-07-18 15:30:02 -04:00
Stephen Boyd
7fa22bd546 ARM: 6993/1: platsmp: Allow secondary cpu hotplug with maxcpus=1
If an ARM system has multiple cpus in the same socket and the
kernel is booted with maxcpus=1, secondary cpus are possible but
not present due to how platform_smp_prepare_cpus() is called.
Since most typical ARM processors don't actually support physical
hotplug, initialize the present map to be equal to the possible
map in generic ARM SMP code. Also, always call
platform_smp_prepare_cpus() as long as max_cpus is non-zero (0
means no SMP) to allow platform code to do any SMP setup.

After applying this patch it's possible to boot an ARM system
with maxcpus=1 on the command line and then hotplug in secondary
cpus via sysfs. This is more in line with how x86 does things.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: David Brown <davidb@codeaurora.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-07 14:45:07 +01:00
Linus Walleij
f022e4e41b ARM: 6986/1: mach-realview: add TCM support for PB1176
Enable TCM support on the RealView PB1176 - we have now taken
the precautions necessary to support even multi-board builds of
RealView systems with TCM enabled.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-06 20:49:45 +01:00
Russell King
4b60e5f90d Merge branches 'consolidate-clksrc', 'consolidate-flash', 'consolidate-generic', 'consolidate-smp', 'consolidate-stmp' and 'consolidate-zones' into consolidate 2011-05-23 18:05:10 +01:00
Russell King
57cc4f7de2 clockevents: ARM sp804: allow clockevent name to be specified
This allows platforms to specify the clcokevent name upon registration.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23 18:04:53 +01:00
Russell King
7ff550de99 clocksource: ARM sp804: obtain sp804 timer rate via clks
This allows platforms to specify the rate of the SP804 clocksource via
the clk subsystem.  While ARM boards clock these at 1MHz, BCMRing also
has SP804 timers but are clocked at different rates.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23 18:04:53 +01:00
Russell King
fb593cf38f clocksource: ARM sp804: allow clocksource name to be specified
This allows platforms to specify the clocksource name upon
registration, which is necessary should they wish to register more
than one sp804 clocksource.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23 18:04:53 +01:00
Russell King
0f7b332f97 ARM: consolidate SMP cross call implementation
Rather than having each platform class provide a mach/smp.h header for
smp_cross_call(), arrange for them to register the function with the
core ARM SMP code instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-23 16:53:17 +01:00
Marc Zyngier
667f390bee ARM: 6910/1: MTD: physmap: let set_vpp() pass a platform_device instead of a map_info
The set_vpp() method provided by physmap passes a map_info back to
the platform code, which has little relevance as far as the platform
is concerned (this parameter is completely unused).

Instead, pass the platform_device, which can be used in the pismo
driver to retrieve some important information in a nicer way, instead
of the hack that was in place.

The empty set_vpp function in board-at572d940hf_ek.c is left untouched,
as the board/SoC is scheduled for removal.

Cc: Andrew Victor <linux@maxim.org.za>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20 22:27:34 +01:00
Marc Zyngier
b8b87aefef ARM: 6903/1: Realview: Use physmap driver instead of integrator-flash
Tested on a PB11-MPCore.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20 22:27:08 +01:00