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On r-/sh-mobile SoCs MSTP clocks are used by the runtime PM to dynamically
enable and disable peripheral clocks. To make sure the clock has really
started we have to read back its status register until it confirms success.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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* pm-assorted:
PM / QoS: Add pm_qos and dev_pm_qos to events-power.txt
PM / QoS: Add dev_pm_qos_request tracepoints
PM / QoS: Add pm_qos_request tracepoints
PM / QoS: Add pm_qos_update_target/flags tracepoints
PM / QoS: Update Documentation/power/pm_qos_interface.txt
PM / Sleep: Print last wakeup source on failed wakeup_count write
PM / QoS: correct the valid range of pm_qos_class
PM / wakeup: Adjust messaging for wake events during suspend
PM / Runtime: Update .runtime_idle() callback documentation
PM / Runtime: Rework the "runtime idle" helper routine
PM / Hibernate: print physical addresses consistently with other parts of kernel
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The "index" field of struct cpufreq_frequency_table was never an
index and isn't used at all by the cpufreq core. It only is useful
for cpufreq drivers for their internal purposes.
Many people nowadays blindly set it in ascending order with the
assumption that the core will use it, which is a mistake.
Rename it to "driver_data" as that's what its purpose is. All of its
users are updated accordingly.
[rjw: Changelog]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The "runtime idle" helper routine, rpm_idle(), currently ignores
return values from .runtime_idle() callbacks executed by it.
However, it turns out that many subsystems use
pm_generic_runtime_idle() which checks the return value of the
driver's callback and executes pm_runtime_suspend() for the device
unless that value is not 0. If that logic is moved to rpm_idle()
instead, pm_generic_runtime_idle() can be dropped and its users
will not need any .runtime_idle() callbacks any more.
Moreover, the PCI, SCSI, and SATA subsystems' .runtime_idle()
routines, pci_pm_runtime_idle(), scsi_runtime_idle(), and
ata_port_runtime_idle(), respectively, as well as a few drivers'
ones may be simplified if rpm_idle() calls rpm_suspend() after 0 has
been returned by the .runtime_idle() callback executed by it.
To reduce overall code bloat, make the changes described above.
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
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git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/sh-pinmux
From Simon Horman. Based on agreement between me, Paul Mundt, Linus
Walleij and Simon, we're mergning this large branch of pinctrl conversion
through arm-soc, even though it contains the corresponding conversions
for arch/sh. Main reason for this is tight dependencies (that will now
mostly be broken) between the arch/sh and mach-shmobile implementations.
There will be more of this in 3.10 to do device-tree bindings, but this is
the initial conversion.
* 'pfc' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (80 commits)
sh-pfc: Move sh_pfc.h from include/linux/ to driver directory
sh-pfc: Remove pinmux_info definition
sh: Remove unused sh_pfc_register_info() function
sh: shx3: pinmux: Use driver-provided pinmux info
sh: sh7786: pinmux: Use driver-provided pinmux info
sh: sh7785: pinmux: Use driver-provided pinmux info
sh: sh7757: pinmux: Use driver-provided pinmux info
sh: sh7734: pinmux: Use driver-provided pinmux info
sh: sh7724: pinmux: Use driver-provided pinmux info
sh: sh7723: pinmux: Use driver-provided pinmux info
sh: sh7722: pinmux: Use driver-provided pinmux info
sh: sh7720: pinmux: Use driver-provided pinmux info
sh: sh7269: pinmux: Use driver-provided pinmux info
sh: sh7264: pinmux: Use driver-provided pinmux info
sh: sh7203: pinmux: Use driver-provided pinmux info
ARM: shmobile: sh73a0: Use driver-provided pinmux info
ARM: shmobile: sh7372: Use driver-provided pinmux info
ARM: shmobile: r8a7779: Use driver-provided pinmux info
ARM: shmobile: r8a7740: Use driver-provided pinmux info
sh-pfc: Add shx3 pinmux support
...
Signed-off-by: Olof Johansson <olof@lixom.net>
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Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The fields are now unused, remove them.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The PFC platform device is now registered by arch code, remove the
legacy registration mechanism.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Resources should be passed through the platform device, not through
platform data. Default to platform device resources and fall back to
platform data resources if not available.
Support for platform data resources will be removed when arch code will
be converted.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Move platform driver registration to a static postcore initcall. This
prepares the move of platform device registration to arch code.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Most of the function and structure names are prefixed by sh_pfc_. Fix
the ones that are not to avoid namespace clashes (especially for
functions that start with gpio_).
Not included in this patch are the platform data structures, those will
be reworked later.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The pfc pointer can't be NULL in the get and set value functions, remove
the error check.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The compiler should be smart enough to automatically inline static
functions that are called from a single location.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Replace probe-time ioremap_nocache() call with devm_ioremap_nocache()
and get rid of the corresponding iounmap() call.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Replace probe-time kmalloc()/kzalloc() calls with devm_kzalloc() and get
rid of the corresponding kfree() calls.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The pinctrl module registers both a platform device and a platform
driver. The only purpose of this awkward construction is to have a
device to pass to the pinctrl registration function.
As a first step to get rid of this hack, move the platform device and
driver from the pinctrl module to the core. The platform device will
then be moved to arch code.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The PFC core calls the gpio module gpiochip registration in its
register_sh_pfc() function, itself called at arch initialization time.
If the gpio module isn't present then the gpiochip will never be
registered.
As the gpio module can only be present at arch initialization time if
it's builtin, there's no point in allowing to build it as a module. Make
it a boolean option, and initialize it synchronously with the core if
selected.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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The PFC core is only used by the pinctrl and gpio modules. As the gpio
module depends on the pinctrl module, the pinctrl module will always be
present if the core gets used. There is thus no point in keeping core
and pinctrl in two seperate modules. Merge them.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Move all private structure definitions and function declarations from
include/linux/sh_pfc.h to drivers/sh/pfc/core.h.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Create a sh_pfc_platform_data structure to store platform data and
reference it from the core sh_pfc structure.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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764f4e4e33d18cde4dcaf8a0d860b749c6d6d08b
(sh: clkfwk: Use shared sh_clk_div_enable/disable())
shared enable/disable funcions for div4/div6.
But new sh_clk_div_enable() didn't care sh_clk_div_set_rate()
which is required on div6 clock.
This patch fixes it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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CONFIG_HOTPLUG is going away as an option. As a result, the __dev*
markings need to be removed.
This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.
Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.
Cc: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc2
Its a little embarrassing, but they all fix problems introduced
in previous pull-requests for 3.8 that have been merged.
* The three Revert patches back-out secondary CPU initialisation
changes from Bastian Hecht which he as advised me are incorrect
and break secondary CPU initialisation.
* The clkfwk patch from Morimoto-san resolves a build warning.
* 'soc4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
sh: clkfwk: fixup unsed variable warning
Revert "ARM: shmobile: r8a7779: Replace modify_scu_cpu_psr with scu_power_mode"
Revert "ARM: shmobile: sh73a0: Replace modify_scu_cpu_psr with scu_power_mode"
Revert "ARM: shmobile: emev2: Replace modify_scu_cpu_psr with scu_power_mode"
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This patch solves above warning
${LINUX}/drivers/sh/clk/cpg.c:404:6: warning: \
unused variable 'val' [-Wunused-variable]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
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'renesas/soc2' into next/boards2
These are all dependencies for the next set of renesas shmobile board
changes.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This patch adds sh_clk_fsidiv_register() to share FSI-DIV clock code
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Simon Horman <horms@verge.net.au>
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It was already pointed out how to fix these cases before the offending
patches were merged, but unsurprisingly, that didn't happen. As this
change is entirely superfluous to begin with, simply shut things up by
casting everything away.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM soc multiplatform enablement from Olof Johansson:
"This is a pretty significant branch. It's the introduction of the
first multiplatform support on ARM, and with this (and the later
branch) merged, it is now possible to build one kernel that contains
support for highbank, vexpress, mvebu, socfpga, and picoxcell. More
platforms will be convered over in the next few releases.
Two critical last things had to be done for this to be practical and
possible:
* Today each platform has its own include directory under
mach-<mach>/include/mach/*, and traditionally that is where a lot
of driver/platform shared definitions have gone, such as platform
data structures. They now need to move out to a common location
instead, and this branch moves a large number of those out to
include/linux/platform_data.
* Each platform used to list the device trees to compile for its
boards in mach-<mach>/Makefile.boot.
Both of the above changes will mean that there are some merge
conflicts to come (and some to resolve here). It's a one-time move
and once it settles in, we should be good for quite a while. Sorry
for the overhead."
Fix conflicts as per Olof.
* tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (51 commits)
ARM: add v7 multi-platform defconfig
ARM: msm: Move core.h contents into common.h
ARM: highbank: call highbank_pm_init from .init_machine
ARM: dtb: move all dtb targets to common Makefile
ARM: spear: move platform_data definitions
ARM: samsung: move platform_data definitions
ARM: orion: move platform_data definitions
ARM: vexpress: convert to multi-platform
ARM: initial multiplatform support
ARM: mvebu: move armada-370-xp.h in mach dir
ARM: vexpress: remove dependency on mach/* headers
ARM: picoxcell: remove dependency on mach/* headers
ARM: move all dtb targets out of Makefile.boot
ARM: picoxcell: move debug macros to include/debug
ARM: socfpga: move debug macros to include/debug
ARM: mvebu: move debug macros to include/debug
ARM: vexpress: move debug macros to include/debug
ARM: highbank: move debug macros to include/debug
ARM: move debug macros to common location
ARM: make mach/gpio.h headers optional
...
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Some drivers need to switch pin states between GPIO and pin function at
runtime, which was inadvertently broken in the pinctrl driver for GPIOs
being bound to a specific direction.
This fixes up the request path to ensure that previously configured GPIOs
don't cause us to inadvertently error out with an unsupported mux on
reconfig, which in practice is primarily aimed at trapping pull-up/down
users that have yet to be implemented under the new API.
Fixes up regressions in the TPU PWM driver, amongst others.
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The sh_pfc_gpio_request_enable() function acquires a spinlock but fails
to release it before returning if the requested mux type is not
supported. Fix this.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Move custom shmobile gpio code to a sh-gpio.h to remove the dependency
on mach/gpio.h. shmobile always uses gpiolib, so we can remove
__GPIOLIB_COMPLEX define from mach/gpio.h.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
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In the multi-evt case we were accidentally associating the parent IRQ,
fix this up.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Presently it's assumed that the irqdomain code handles the irq_desc
allocation for us, but this isn't necessarily the case when we've
pre-allocated IRQs via sparseirq. Previously we had a -EEXIST check in
the code that attempted to trap these cases and simply update them
in-place, but this behaviour was inadvertently lost in the transition to
irqdomains.
This simply restores the previous behaviour, first attempting to let the
irqdomain core fetch the allocation for us, and falling back to an
in-place domain association in the extant IRQ case. Fixes up regressions
on platforms that pre-allocate legacy IRQs (specifically ARM-based
SH-Mobile platforms, as SH stopped pre-allocating vectors some time ago).
Reported-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Trivial support for irq domains, using either a linear map or radix tree
depending on the vector layout.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Commit ca5481c68e9fbcea62bb3c78ae6cccf99ca8fb73 ("sh: pfc: Rudimentary
pinctrl-backed GPIO support.") introduced a regression for platforms that
were doing early GPIO API calls (from arch_initcall() or earlier),
leading to a situation where our two-stage registration logic would trip
itself up and we'd -ENODEV out of the pinctrl registration path,
resulting in endless -EPROBE_DEFER errors. Further lack of checking any
sort of errors from gpio_request() resulted in boot time warnings,
tripping on the FLAG_REQUESTED test-and-set in gpio_ensure_requested().
As it turns out there's no particular need to bother with the two-stage
registration, as the platform bus is already available at the point that
we have to start caring. As such, it's easiest to simply fold these
together in to a single init path, the ordering of which is ensured
through the platform's mux registration, as usual.
Reported-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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pinctrl_remove_gpio_range() is now handled by the pinctrl core in the
unreg path for some reason, so use that instead.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This implements simple support for adjusting the pin config value via the
pinctrl API. The pinconf-generic code is abandoned for now until we've
got a chance to revamp the pinmux_type state tracking that's needed by
legacy code.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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While this code is still being shuffled around the KBUILD_MODNAME value
isn't particularly useful, switch to something a bit more useful.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This follows the function support by simply doing 1 pin per group
encapsulation in order to keep with legacy behaviour. This will be
built on incrementally as SoCs define their own pin groups.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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If we encounter invalid entries in the pinmux GPIO range, make sure we've
still got a dummy pin definition but don't otherwise map it.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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symbol_request() requires the registration symbol to be exported, make
sure it is.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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pinctrl support is required for correct operation, failure to locate
the init routine is fatal.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This maps out all of the function types to pinctrl function groups.
Presently this is restricted to one pin per function to maintain
compatability with legacy behaviour. This will be extended as groups
are introduced and exiting users migrated.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This begins the migration of the PFC core to the pinctrl subsystem.
Initial support is very basic, with the bulk of the implementation simply
being nopped out in such a way to allow registration with the pinctrl
core to succeed.
The gpio chip driver is stripped down considerably now relying purely on
pinctrl API calls to manage the bulk of its operations.
This provides a basis for further PFC refactoring, including decoupling
pin functions from the GPIO API, establishing pin groups, and so forth.
These will all be dealt with incrementally so as to introduce as few
growing and migratory pains to tree-wide PFC pinmux users today.
When the interfaces have been well established and in-tree users have
been migrated off of the legacy interfaces it will be possible to strip
down the core considerably, leading to eventual drivers/pinctrl rehoming.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This follows the intc/clk changes and shuffles the PFC support code under
its own directory. This will facilitate better code sharing, and allow us
to trim down the exported interface by quite a margin.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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