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72353 Commits

Author SHA1 Message Date
Tony Lindgren
79ab266433 Merge tag 'omap-devel-e-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into devel-am33xx-data
OMAP AM33xx clock data

Conflicts:
	arch/arm/mach-omap2/Makefile
2012-07-05 08:18:04 -07:00
Vaibhav Hiremath
ecc46cfdad ARM: OMAP2+: Remove unnecessary ifdef around __omap2_set_globals
The function __omap2_set_globals() can be common across all
platforms/architectures, even in case of omap4, internally it
calls same set of functions as in __omap2_set_globals() function
(except for sdrc).
This patch adds new config flag SOC_HAS_OMAP2_SDRC to handle sdrc,
so that we can reuse same function across omap2/3/4...

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-07-05 08:05:15 -07:00
Vaibhav Hiremath
971b8a9c3e ARM: OMAP2+: am33xx: Change cpu_is_am33xx to soc_is_am33xx
As per recent discussion on the linux-omap list, we are
moving in the direction where, we will have only architecture,
ARCH_OMAP2PLUS and all devices/platforms will be treated
as a SoC underneath.

So the first step in this direction is to adopt this change
for all new devices getting in, converting
cpu_is_am33xx/335x() ==> soc_is_am33xx/335x()

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-07-05 08:05:15 -07:00
Vaibhav Hiremath
1c213ba16e ARM: OMAP2+: am33xx: Make am33xx as a separate class
Initially, we decided to make am33xx family of device to fall
under omap3 class (cpu_is_omap34xx() = true), since it carries
Cortex-A8 core. But while adding complete baseport support
(like, clock, power and hwmod) support, it is observed that,
we are creating more and more problems by treating am33xx device
as omap3 family, as nothing matches between them
(except cortex-A8 mpu).

So,  after long discussion we have came to the conclusion that,
we should not consider am33xx device as omap3 family, instead
create separate class (SOC_AM33XX) under OMAP2PLUS.
This means, for am33xx device, cpu_is_omap34xx() will return false,
and only cpu_is_am33xx() will be true.

Please refer to the link below, for mailing-list discussion on this -

http://www.spinics.net/lists/linux-omap/msg69439.html

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
[tony@atomide.com: fixed typo, updated for soc_is changes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-07-05 08:05:15 -07:00
Vaibhav Hiremath
353cec46d5 ARM: OMAP2+: Move omap3 dpll ops to dpll3xxx.c
In order to remove unnecessary idefs, move noncore and core
dpll ops to dpll3xxx.c file (where it should have been already).

The clkops (clkops_omap3_core_dpll_ops & clkops_omap3_noncore_dpll_ops)
is used in clock data files, and dependency is already handled by
Makefile rule.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-07-05 08:05:15 -07:00
Vaibhav Hiremath
576d5e3a34 ARM: OMAP2+: All OMAP2PLUS uses omap-device.o target so add one entry
All OMAP2PLUS based devices, builds omap-device.o target;
so just add one entry so that there is no need to patch this file
for any future OMAP2+ devices.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-07-05 08:05:14 -07:00
Roland Stigge
42b14cb037 mips: pci-lantiq: Fix check for valid gpio
This patch fixes two checks for valid gpio number, formerly (wrongly)
considering zero as invalid, now using gpio_is_valid().

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-07-05 15:02:18 +02:00
Russell King
09b2ad13da ARM: fix warning caused by wrongly typed arm_dma_limit
arch/arm/mm/init.c: In function 'arm_memblock_init':
arch/arm/mm/init.c:380: warning: comparison of distinct pointer types lacks a cast

by fixing the typecast in its definition when DMA_ZONE is disabled.
This was missed in 4986e5c7c (ARM: mm: fix type of the arm_dma_limit
global variable).

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-05 13:11:31 +01:00
Russell King
b89d607b59 ARM: fix warnings about atomic64_read
Fix:
net/netfilter/xt_connbytes.c: In function 'connbytes_mt':
net/netfilter/xt_connbytes.c:43: warning: passing argument 1 of 'atomic64_read' discards qualifiers from pointer target type
...

by adding the missing const.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-05 13:06:32 +01:00
Rabin Vincent
f8b435bb91 ARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6
'sub pc, pc, #1b-2b+8-2' results in address<1:0> == '10'.

sub pc, pc, #const (== ADR pc, #const) performs an interworking branch
(BXWritePC()) on ARMv7+ and a simple branch (BranchWritePC()) on earlier
versions.

In ARM state, BXWritePC() is UNPREDICTABLE when address<1:0> == '10'.

In ARM state on ARMv6+, BranchWritePC() ignores address<1:0>.  Before
ARMv6, BranchWritePC() is UNPREDICTABLE if address<1:0> != '00'

So the instruction is UNPREDICTABLE both before and after v6.

Acked-by: Jon Medhurst <tixy@yxit.co.uk>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-05 12:57:16 +01:00
David S. Miller
c90a9bb907 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-05 03:44:25 -07:00
Arnd Bergmann
e15ebe05cc Merge tag 'omap-fixes-for-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
PM related fixes for omaps mostly to get suspend/resume
working again.

* tag 'omap-fixes-for-v3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4
  ARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess IP blocks
  ARM: OMAP4: TWL6030: ensure sys_nirq1 is mux'd and wakeup enabled
  ARM: OMAP2: Overo: init I2C before MMC to fix MMC suspend/resume failure

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-05 12:16:13 +02:00
Tarun Kanti DebBarma
74dd9ec627 ARM: OMAP: dmtimer: use devm_ API and do some cleanup in probe()
Replace the regular kzalloc and ioremap with the devm_ equivalent
to simplify error handling. We don't need kree() any more in
omap_dm_timer_remove().

Also added *dev* pointer to reference pdev->dev which makes the
usage shorter in code.

Cc: Cousson, Benoit <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-07-05 02:15:55 -07:00
Tony Lindgren
ac5b0ea3d0 Merge tag 'omap-devel-f-for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into cleanup-part2
Miscellaneous OMAP clock, hwmod, clockdomain, and powerdomain patches
for 3.6.  Mostly small infrastructure improvements, and preparation
for OMAP5 and AM33xx code.

Conflicts:
	arch/arm/mach-omap2/omap_hwmod.c
	arch/arm/plat-omap/include/plat/omap_hwmod.h
2012-07-05 02:13:04 -07:00
Arnd Bergmann
8d111444bd Merge branch 'mxs/fixes-for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes
* 'mxs/fixes-for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: apx4devkit: fix FEC enabling PHY clock

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-05 11:06:36 +02:00
Will Deacon
fdeb8e35fd ARM: 7441/1: perf: return -EOPNOTSUPP if requested mode exclusion is unavailable
We currently return -EPERM if the user requests mode exclusion that is
not supported by the CPU. This looks pretty confusing from userspace
and is inconsistent with other architectures (ppc, x86).

This patch returns -EOPNOTSUPP instead.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-05 09:50:56 +01:00
Will Deacon
433e2f307b ARM: 7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK"
This reverts commit 6b5c8045ec.

Conflicts:

	arch/arm/kernel/ptrace.c

The new syscall restarting code can lead to problems if we take an
interrupt in userspace just before restarting the svc instruction. If
a signal is delivered when returning from the interrupt, the
TIF_SYSCALL_RESTARTSYS will remain set and cause any syscalls executed
from the signal handler to be treated as a restart of the previously
interrupted system call. This includes the final sigreturn call, meaning
that we may fail to exit from the signal context. Furthermore, if a
system call made from the signal handler requires a restart via the
restart_block, it is possible to clear the thread flag and fail to
restart the originally interrupted system call.

The right solution to this problem is to perform the restarting in the
kernel, avoiding the possibility of handling a further signal before the
restart is complete. Since we're almost at -rc6, let's revert the new
method for now and aim for in-kernel restarting at a later date.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-05 09:50:56 +01:00
Will Deacon
3b0c062267 ARM: 7442/1: Revert "remove unused restart trampoline"
This reverts commit fa18484d09.

We need the restart trampoline back so that we can revert a related
problematic patch 6b5c8045ec ("arm: new
way of handling ERESTART_RESTARTBLOCK").

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-05 09:50:56 +01:00
Russell King
82401bf105 ARM: fix set_domain() macro
Avoid polluting drivers with a set_domain() macro, which interferes with
structure member names:

drivers/net/wireless/ath/ath9k/dfs_pattern_detector.c:294:33: error: macro "set_domain" passed 2 arguments, but takes just 1

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-05 09:50:55 +01:00
Heiko Schocher
961e657f5a ARM: davinci: cp_intc: Add OF support for TI interrupt controller
Add a function to initialize the Common Platform Interrupt Controller
(cp_intc) from TI used on OMAP-L1x SoCs using a device tree node.

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: davinci-linux-open-source@linux.davincidsp.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2012-07-05 14:12:35 +05:30
Tony Lindgren
fa2976a811 Merge tag 'omap-fixes-b-for-3.5rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into fixes
A few more OMAP fixes for 3.5-rc.  These fix some bugs with power
management and McBSP.
2012-07-05 01:12:08 -07:00
Lauri Hintsala
c46d2916f6 ARM: apx4devkit: fix FEC enabling PHY clock
Ethernet stopped to work after mxs clk framework change.

Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-05 16:08:01 +08:00
Fabio Estevam
ab27166862 ARM: mxs_defconfig: Enable RTC driver
Let RTC driver driver be built by default.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-05 09:42:46 +08:00
Fabio Estevam
b9df44919c ARM: mx23: Add initial support for olinuxino board
mx23-olinuxino is a low cost board designed by Olimex.

It has the following features:

- Freescale iMX233 ARM926J processor at 454MHz
-64 MB RAM
-SD-card connector
-TV PAL/NTSC video output
-2 USB High Speed Hosts
-Ethernet 100 Mbit
-Stereo Audio Input
-Stereo Headphones Audio Output

More information at:
http://www.olimex.com/dev/imx233-olinuxino-maxi.html

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-05 09:40:51 +08:00
Russell King
32e1eb59f7 ARM: fix mach-versatile/pci.c warning
arch/arm/mach-versatile/pci.c: In function 'versatile_map_irq':
arch/arm/mach-versatile/pci.c:342: warning: unused variable 'devslot'

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-04 17:04:57 +01:00
Arnd Bergmann
f63870924f ARM: prima2: enable gpiolib unconditionally
The pinctrl code needs GPIOLIB to be enabled, so make
sure that it cannot be built otherwise. This fixes
the prima2_defconfig.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Barry Song <21cnbao@gmail.com>
2012-07-04 16:54:32 +02:00
Benoit Cousson
d7a0b5133f ARM: OMAP2+: hwmod data: Fix wrong McBSP clock alias on OMAP4
The commit 503d0ea24d
  ARM: OMAP4: hwmod data: Add aliases for McBSP fclk clocks

added a wrong "prcm_clk" alias for PRCM clock whereas the McBSP
driver and previous OMAPs are using "prcm_fck".

It thus lead to the following warning.

[   47.409729] omap-mcbsp: clks: could not clk_get() prcm_fck

Fix that by changing the opt_clk role to prcm_fck.

Reported-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Sebastien Guiriec <s-guiriec@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 06:55:29 -06:00
Paul Walmsley
b0a70cc80e ARM: OMAP4: hwmod data: temporarily comment out data for the usb_host_fs and aess IP blocks
The OMAP4 usb_host_fs (OHCI) and AESS IP blocks require some special
programming for them to enter idle.  Without this programming, they
will prevent the rest of the chip from entering full chip idle.

To implement the idle programming cleanly, this will take some
coordination between maintainers.  This is likely to take some time,
so it is probably best to leave this for 3.6 or 3.7.  So, in the
meantime, prevent these IP blocks from being registered.

Later, once the appropriate support is available, this patch can be
reverted.

This second version comments out the IP block data since Benoît didn't
like removing it.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
2012-07-04 06:55:29 -06:00
Paul Walmsley
8cb8de5d87 Merge branches 'hwmod_am335x_support_3.6', 'clkdm_pwrdm_devel_a_3.6' and 'misc_devel_3.6' into omap_devel_f_3.6 2012-07-04 06:05:51 -06:00
Arnd Bergmann
14070ade02 ARM: at91: fix new build errors
MULTI_IRQ_HANDLER and SPARSE_IRQ are now required everywhere because
mach/irqs.h and mach/entry-macros.S are gone but the symbols are
only selected for AT91SAM9, not for the NOMMU parts.

A few files now need to include linux/io.h directly, which used to
be included through other headers that have changed.

The new at91_aic_irq_priorities variable is only used with CONFIG_OF
enabled and should not be visible otherwise.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-07-04 13:56:48 +02:00
Arnd Bergmann
8df0fd939a Merge branch 'fixes' of git://github.com/hzhuang1/linux into fixes
From Haojian Zhuang <haojian.zhuang@gmail.com>:

* 'fixes' of git://github.com/hzhuang1/linux:
  ARM: mmp: remove mach/gpio-pxa.h

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-04 13:49:58 +02:00
Arnd Bergmann
811dde659f Merge tag 'v3.5-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes
From Sascha Hauer <s.hauer@pengutronix.de>:

ARM i.MX fixes for v3.5-rc5

* tag 'v3.5-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6:
  ARM: imx: assert SCC gate stays enabled
  ARM: imx27_visstrim_m10: Do not include <asm/system.h>

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-04 13:46:05 +02:00
Kishon Vijay Abraham I
6668546f3b ARM: OMAP2+: hwmod code: add support to set dmadisable in hwmod framework
The DMADISABLE bit is a semi-automatic bit present in sysconfig register
of some modules. When the DMA must perform read/write accesses, the
DMADISABLE bit is cleared by the hardware. But when the DMA must stop for power
management, software must set the DMADISABLE bit back to 1.

In cases where the ROMCODE/BOOTLOADER uses dma, the hardware clears the
DMADISABLE bit (but the romcode/bootloader might not set it back to 1).
In order for the kernel to start in a clean state, it is
necessary for the kernel to set DMADISABLE bit back to 1 (irrespective
of whether it's been set to 1 in romcode or bootloader).

During _reset of the (hwmod)device, the DMADISABLE bit is set so that it
does not prevent idling of the system. (NOTE: having DMADISABLE to 0,
prevents the system to idle)

DMADISABLE bit is present in usbotgss module of omap5.

Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[paul@pwsan.com: updated to apply; fixed checkpatch warnings]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 05:09:21 -06:00
R Sricharan
3f4990f44a ARM: OMAP2+: PRM/CM: Move the stubbed prm and cm functions to prcm.c file and make them __weak
Some prm and cm registers read/write and status functions
are built only for some custom OMAP2+ builds and are stubbed
in header files for other builds under ifdef statements.
But this results in adding new CONFIG_ARCH_OMAPXXX
checks when SOCs are added in the future. So move them
to a common place for OMAP2+ and make them 'weak' implementations.

This way no new ifdefs would be required in the future and also
cleans up the existing code.

Signed-off-by: R Sricharan <r.sricharan@ti.com>
[paul@pwsan.com: unsplit quoted strings; moved PRM functions to
 mach-omap2/prm_common.c; resolved sparse warnings]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 05:04:00 -06:00
Tarun Kanti DebBarma
bed9d1bb4e ARM: OMAP2+: hwmod: add omap_hwmod_get_main_clk() API
Add an API to get main clock name associated with a given @oh.
This will avoid the need to construct fclk names during early
initialization in order to get fclk handle using clk_get().

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 05:00:48 -06:00
Vikram Pandita
55ffe163c8 ARM: OMAP3+: dpll: optimize noncore dpll locking logic
If the dpll is already locked, code can be optimized
to return much earlier than doing redundent set of lock mode
and wait on idlest.

Cc: Tony Lindgren <tony@atomide.com>
Cc: Jon Hunter <jon-hunter@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Mike Turquette <mturquette@ti.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 05:00:44 -06:00
Sakari Ailus
f0d3d821db ARM: OMAP3: control: add definition for CONTROL_CAMERA_PHY_CTRL
The register is used to configure the behaviour of the CSI-2 and CCP-2
receivers. This register is available only in OMAP3630.

The original patch was submitted by Vimarsh Zutshi.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Vimarsh Zutshi <vimarsh.zutshi@gmail.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 05:00:40 -06:00
Jon Hunter
d49cae924f ARM: OMAP2+: powerdomain code: Fix Wake-up power domain power status
The wake-up power domain is an alway-on power domain and so this power domain
does not have a power state status (PM_PWSTST_xxx) register that indicates the
current state. However, during the registering of the wake-up power domain the
state of the domain is queried by calling pwrdm_read_pwrst(). This actually
tries to read a register that does not exist and returns a value of 0 that
indicates that the current state is OFF. The OFF state count of the wake-up
power domain is then set to 1 and the current state to OFF. Both of which are
incorrect.

To fix this, if a power domain only supports the ON state, do not attempt to
read the power state status register and simply return ON as the current power
state.

This is based upon Tony's current linux-omap master branch.

Testing:
- Boot tested on OMAP4460 panda.
- Boot tested on OMAP3430 beagle and validated CORE RET still working (using
  Paul's 32k timer patch [1]).

[1] http://marc.info/?l=linux-omap&m=134000053229888&w=2

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[paul@pwsan.com: edited commit message slightly]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 04:12:07 -06:00
Jon Hunter
65aa94b204 ARM: OMAP4: clockdomain/CM code: Update supported transition modes
For OMAP3+ devices, the clock domains (CLKDMs) support one or more of the
following transition modes ...

NO_SLEEP (0x0) - A clock domain sleep transition is never initiated,
		 irrespective of the hardware conditions.
SW_SLEEP (0x1) - A software-forced sleep transition. The transition is initiated
		 when the associated hardware conditions are satisfied
SW_WKUP  (0x2) - A software-forced clock domain wake-up transition is initiated,
		 irrespective of the hardware conditions.
HW_AUTO  (0x3) - Hardware-controlled automatic sleep and wake-up transition is
		 initiated by the PRCM module when the associated hardware
		 conditions are satisfied.

For OMAP4 devices, SW_SLEEP is equivalent to HW_AUTO and NO_SLEEP is equivalent
to SW_WKUP. The only difference between HW_AUTO and SW_SLEEP for OMAP4 devices
is that the PRM_IRQSTATUS_MPU.TRANSITION_ST interrupt status is set in case of
SW_SLEEP transition, and not set in case of HW_AUTO transition.

For OMAP4 devices, all CLKDMs support HW_AUTO and therefore we can place the
CLKDMs in the HW_AUTO state instead of the SW_SLEEP mode. Hence, we do not
need to use the SW_SLEEP mode. With regard to NO_SLEEP and SW_WKUP it is
preferred to use SW_WKUP mode if the CLKDM supports it and so use this mode
instead of NO_SLEEP where possible.

For a software perspective the above 4 modes are represented by the following
flags to indicate what modes are supported by each of the CLKDMs.

CLKDM_CAN_DISABLE_AUTO	--> NO_SLEEP
CLKDM_CAN_ENABLE_AUTO	--> HW_AUTO
CLKDM_CAN_FORCE_SLEEP	--> SW_SLEEP
CLKDM_CAN_FORCE_WAKEUP	--> SW_WKUP

By eliminating the SW_SLEEP mode the the mapping of the flags for OMAP4 devices
can becomes ...

CLKDM_CAN_DISABLE_AUTO	--> NO_SLEEP
CLKDM_CAN_ENABLE_AUTO	--> HW_AUTO
CLKDM_CAN_FORCE_SLEEP	--> HW_AUTO
CLKDM_CAN_FORCE_WAKEUP	--> SW_WKUP

Cc: Ming Lei <ming.lei@canonical.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@ti.com>
Reviewed-by: Benoit Cousson <b-cousson@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 03:45:53 -06:00
Vaibhav Hiremath
768c69f5e9 ARM: OMAP3/4: omap_hwmod: Add rstst_offs field to struct omap_hwmod_omap4_prcm
In case of AM33XX device, XXX_RSTST register offset is not
consistent across PRM modules/instances,

PRM_XXX            RSTST
=========================
PRM_PER_MOD:       0x04
PRM_WKUP_MOD:      0x0C
PRM_MPU_MOD:       NA
PRM_DEVICE_MOD:    0x08

This means, we need to pass on XXX_RSTST register offset
information through omap_hwmod data, similar to XXX_RSTCTRL.

Currently, this field is only applicable and used for AM33XX
devices.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 03:41:03 -06:00
Vaibhav Hiremath
248b3b3d84 ARM: OMAP2+: hwmod: Add new sysc_type3 into omap_hwmod required for am33xx
In case of AM33xx family of devices (like cpsw) have different sysc
bit field offsets defined,

sysc_type3:
|  3     2  |  1    0  |
| STDBYMODE | IDLEMODE |

So introduce new sysc_type3 in omap_hwmod common data.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-07-04 03:40:59 -06:00
Andrew Lunn
1e0c1ce00d ARM: Orion: Fix WDT compile for Dove and MV78xx0
Commit 0fa1f0609a (ARM: Orion: Fix
Virtual/Physical mixup with watchdog) broke the Dove & MV78xx0
build. Although these two SoC don't use the watchdog, the shared
platform code still needs to build. Add the necessary defines.

Cc: stable@vger.kernel.org
Reported-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-04 10:37:34 +02:00
Paul Bolle
c12a3cb9dc ARM: mmp: remove mach/gpio-pxa.h
Commit 157d2644cb ("ARM: pxa: change gpio
to platform device") removed all includes of mach/gpio-pxa.h. It kept
this unused header in the tree. Using it can't work, as it itself
includes the non-existent header plat/gpio-pxa.h. This header can safely
be removed.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-07-04 15:58:11 +08:00
Uwe Kleine-König
c520c921ea ARM: imx: assert SCC gate stays enabled
The SCC clock is needed in internal boot mode and so must keep enabled.
This same issue was fixed for the pre-common-clk code in commit

	3d6e614 (mx35: Fix boot ROM hang in internal boot mode)

Cc: John Ogness <jogness@linutronix.de>
Cc: Hans J. Koch <hjk@hansjkoch.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-07-04 09:38:29 +02:00
Tony Lindgren
3f96a2d90e Merge tags 'omap-cleanup-for-v3.6', 'omap-devel-dmtimer-for-v3.6' and 'omap-devel-am33xx-for-v3.6' into devel-am33xx-part2 2012-07-04 00:29:31 -07:00
Fabio Estevam
6684294d27 ARM: imx: Fix build error due to missing irqs.h include
commit bc8966 (ARM: fiq: change FIQ_START to a variable) introduced the
following build error for imx_v4_v5_defconfig:

arch/arm/plat-mxc/avic.c:220:11: error: 'FIQ_START' undeclared (first use in this function)

Include the missing header file to fix it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-04 11:19:40 +08:00
Xiao Guangrong
85b7059169 KVM: MMU: fix shrinking page from the empty mmu
Fix:

 [ 3190.059226] BUG: unable to handle kernel NULL pointer dereference at           (null)
 [ 3190.062224] IP: [<ffffffffa02aac66>] mmu_page_zap_pte+0x10/0xa7 [kvm]
 [ 3190.063760] PGD 104f50067 PUD 112bea067 PMD 0
 [ 3190.065309] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
 [ 3190.066860] CPU 1
[ ...... ]
 [ 3190.109629] Call Trace:
 [ 3190.111342]  [<ffffffffa02aada6>] kvm_mmu_prepare_zap_page+0xa9/0x1fc [kvm]
 [ 3190.113091]  [<ffffffffa02ab2f5>] mmu_shrink+0x11f/0x1f3 [kvm]
 [ 3190.114844]  [<ffffffffa02ab25d>] ? mmu_shrink+0x87/0x1f3 [kvm]
 [ 3190.116598]  [<ffffffff81150c9d>] ? prune_super+0x142/0x154
 [ 3190.118333]  [<ffffffff8110a4f4>] ? shrink_slab+0x39/0x31e
 [ 3190.120043]  [<ffffffff8110a687>] shrink_slab+0x1cc/0x31e
 [ 3190.121718]  [<ffffffff8110ca1d>] do_try_to_free_pages

This is caused by shrinking page from the empty mmu, although we have
checked n_used_mmu_pages, it is useless since the check is out of mmu-lock

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-07-03 17:31:50 -03:00
Arnd Bergmann
2028103f90 Merge tag 'omap-devel-am33xx-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
From Tony Lindgren <tony@atomide.com>:

Here are changes to add support for am33xx processors for the
clock, power, and voltagedomains.

* tag 'omap-devel-am33xx-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP AM33xx: clockdomains: Add clockdomain data and respective operations
  ARM: OMAP AM33xx: powerdomains: add AM335x support
  ARM: OMAP AM33xx: CM: Introduce AM33xx CM APIs and register level details
  ARM: OMAP AM33xx: PRM: add PRM support
  ARM: OMAP AM33xx: voltagedomain: Add voltage domain data
  ARM: OMAP2+: control: Add AM33XX control reg & sec clkctrl offset
  ARM: OMAP2+: am33xx: Add AM335XEVM machine support
  ARM: OMAP2+: am33xx: Add low level debugging support

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-03 22:03:28 +02:00
Arnd Bergmann
6b21a9ce04 Merge tag 'omap-devel-pm-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/pm
From: Tony Lindgren <tony@atomide.com>:

Here are some omap PM changes that reimplement omap PRCM I/O chain
code for wake-ups, and improve idle latencies for cpuidle.

* tag 'omap-devel-pm-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: PM: fix IRQ_NOAUTOEN removal by mis-merge
  ARM: OMAP3: PM: cpuidle: optimize the clkdm idle latency in C1 state
  ARM: OMAP3: PM: cpuidle: optimize the PER latency in C1 state
  ARM: OMAP3: PM: cpuidle: default to C1 in next_valid_state
  ARM: OMAP3: PM: cleanup cam_pwrdm leftovers
  ARM: OMAP3: PM: call pre/post transition per powerdomain
  ARM: OMAP2+: powerdomain: allow pre/post transtion to be per pwrdm
  ARM: OMAP3: PM: Remove IO Daisychain control from cpuidle
  ARM: OMAP3PLUS: hwmod: reconfigure IO Daisychain during hwmod mux
  ARM: OMAP3+: PRM: Enable IO wake up
  ARM: OMAP4: PRM: Add IO Daisychain support
  ARM: OMAP3: PM: Move IO Daisychain function to omap3 prm file
  ARM: OMAP3: PM: correct enable/disable of daisy io chain
  ARM: OMAP2+: PRM: fix compile for OMAP4-only build

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-03 22:02:17 +02:00
Arnd Bergmann
0d1d76dd35 Merge tag 'omap-devel-driver-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/pm
From Tony Lindgren <tony@atomide.com>:

Here are omap driver changes for v3.6 that were agreed to be merged
via the omap tree. These changes convert omap HDQ1W driver to use
runtime PM, and finally move omap SmartReflex driver from arch/arm
to live under drivers.

* tag 'omap-devel-driver-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: do not allow SmartReflex to be built as a module
  ARM: OMAP2: Use hwmod to initialize mmc for 2420
  W1: OMAP HDQ1W: use runtime PM
  ARM: OMAP2+: HDQ1W: use omap_device
  W1: OMAP HDQ1W: use 32-bit register accesses
  W1: OMAP HDQ1W: allow driver to be built on all OMAP2+
  ARM: OMAP: SmartReflex: Move smartreflex driver to drivers/
  ARM: OMAP2+: SmartReflex: add POWER_AVS Kconfig options
  ARM: OMAP2+: SmartReflex: Create per-opp debugfs node for errminlimit
  ARM: OMAP2+: SmartReflex: Use per-OPP data structure
  ARM: OMAP2+: Voltage: Move the omap_volt_data structure to plat
  ARM: OMAP2+: SmartReflex: introduce a busy loop condition test macro
  ARM: OMAP3: hwmod: rename the smartreflex entries
  ARM: OMAP2+: smartreflex: Use the names from hwmod data instead of voltage domains.
  ARM: OMAP3+: SmartReflex: class drivers should use struct omap_sr *
  ARM: OMAP2+: SmartReflex: move the smartreflex header to include/linux/power

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-03 21:57:48 +02:00