Commit Graph

287 Commits

Author SHA1 Message Date
Arvind Yadav bae170efd6 power: reset: hisi-reboot: Unmap region obtained by of_iomap
Free memory mapping, if probe is not successful.

Fixes: 4a9b373718 ("power: reset: move hisilicon reboot code")
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-08-12 22:42:37 +02:00
Andy Yan 7a4947cf6f power: reset: reboot-mode: fix build error of missing ioremap/iounmap on UM
commit 4fcd504edb ("power: reset: add reboot mode driver") uses api from
syscon, and syscon uses ioremap/iounmap which depends on HAS_IOMEM, so
let's depend on MFD_SYSCON instead of selecting it directly to avoid the
um-allyesconfig like build error on archs that without iomem:

drivers/mfd/syscon.c: In function 'of_syscon_register':
drivers/mfd/syscon.c:67:9: error: implicit declaration of function 'ioremap' [-Werror=implicit-function-declaration]
  base = ioremap(res.start, resource_size(&res));
         ^
drivers/mfd/syscon.c:67:7: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
  base = ioremap(res.start, resource_size(&res));
       ^
drivers/mfd/syscon.c:109:2: error: implicit declaration of function 'iounmap' [-Werror=implicit-function-declaration]
  iounmap(base);
  ^

Reported-by: Kbuild test robot <fengguang.wu@intel.com>
Fixes: 4fcd504edbf7("power: reset: add reboot mode driver")
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-08-12 22:42:36 +02:00
Linus Torvalds 43a0a98aa8 ARM: SoC driver updates for v4.8
Driver updates for ARM SoCs.
 
 A slew of changes this release cycle. The reset driver tree, that we merge
 through arm-soc for historical reasons, is also sizable this time around.
 
 Among the changes:
 
  - clps711x: Treewide changes to compatible strings, merged here for simplicity.
  - Qualcomm: SCM firmware driver cleanups, move to platform driver
  - ux500: Major cleanups, removal of old mach-specific infrastructure.
  - Atmel external bus memory driver
  - Move of brcmstb platform to the rest of bcm
  - PMC driver updates for tegra, various fixes and improvements
  - Samsung platform driver updates to support 64-bit Exynos platforms
  - Reset controller cleanups moving to devm_reset_controller_register() APIs
  - Reset controller driver for Amlogic Meson
  - Reset controller driver for Hisilicon hi6220
  - ARM SCPI power domain support
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "Driver updates for ARM SoCs.

  A slew of changes this release cycle.  The reset driver tree, that we
  merge through arm-soc for historical reasons, is also sizable this
  time around.

  Among the changes:

   - clps711x: Treewide changes to compatible strings, merged here for simplicity.
   - Qualcomm: SCM firmware driver cleanups, move to platform driver
   - ux500: Major cleanups, removal of old mach-specific infrastructure.
   - Atmel external bus memory driver
   - Move of brcmstb platform to the rest of bcm
   - PMC driver updates for tegra, various fixes and improvements
   - Samsung platform driver updates to support 64-bit Exynos platforms
   - Reset controller cleanups moving to devm_reset_controller_register() APIs
   - Reset controller driver for Amlogic Meson
   - Reset controller driver for Hisilicon hi6220
   - ARM SCPI power domain support"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (100 commits)
  ARM: ux500: consolidate base platform files
  ARM: ux500: move soc_id driver to drivers/soc
  ARM: ux500: call ux500_setup_id later
  ARM: ux500: consolidate soc_device code in id.c
  ARM: ux500: remove cpu_is_u* helpers
  ARM: ux500: use CLK_OF_DECLARE()
  ARM: ux500: move l2x0 init to .init_irq
  mfd: db8500 stop passing around platform data
  ASoC: ab8500-codec: remove platform data based probe
  ARM: ux500: move ab8500_regulator_plat_data into driver
  ARM: ux500: remove unused regulator data
  soc: raspberrypi-power: add CONFIG_OF dependency
  firmware: scpi: add CONFIG_OF dependency
  video: clps711x-fb: Changing the compatibility string to match with the smallest supported chip
  input: clps711x-keypad: Changing the compatibility string to match with the smallest supported chip
  pwm: clps711x: Changing the compatibility string to match with the smallest supported chip
  serial: clps711x: Changing the compatibility string to match with the smallest supported chip
  irqchip: clps711x: Changing the compatibility string to match with the smallest supported chip
  clocksource: clps711x: Changing the compatibility string to match with the smallest supported chip
  clk: clps711x: Changing the compatibility string to match with the smallest supported chip
  ...
2016-08-01 18:36:01 -04:00
Linus Torvalds 6f888fe31d ARM: SoC cleanups for v4.8
The cleanup branch keeps going down in size as we've completed a lot of
 the major legacy platform removals and conversions.
 
 A handful of changes this time around, some of the themes or larger sets are:
 
  - A bunch of i.MX cleanups around platform detection, init call cleanups
  - Misc fixes of missing/implicit includes
  - Removal of ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB
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Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanups from Olof Johansson:
 "The cleanup branch keeps going down in size as we've completed a lot
  of the major legacy platform removals and conversions.

  A handful of changes this time around, some of the themes or larger
  sets are:

   - A bunch of i.MX cleanups around platform detection, init call cleanups
   - Misc fixes of missing/implicit includes
   - Removal of ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB"

* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (40 commits)
  ARM: mps2: fix typo
  ARM: s3c64xx: avoid warning about 'struct device_node'
  bus: mvebu-mbus: make mvebu_mbus_syscore_ops static
  bus: mvebu-mbus: fix __iomem on register pointers
  ARM: tegra: Remove board_init_funcs array
  ARM: iop: Fix indentation
  ARM: imx: remove cpu_is_mx*()
  ARM: imx: remove last call to cpu_is_mx5*
  ARM: imx: rework mx27_pm_init() call
  ARM: imx: deconstruct mx3_idle
  ARM: imx: deconstruct mxc_rnga initialization
  ARM: imx: remove cpu_is_mx1 check
  ARM: i.MX: Do not explicitly call l2x0_of_init()
  ARM: i.MX: system.c: Tweak prefetch settings for performance
  ARM: i.MX: system.c: Replace magic numbers
  ARM: i.MX: system.c: Remove redundant errata 752271 code
  ARM: i.MX: system.c: Convert goto to if statement
  ARM: Kirkwood: fix kirkwood_pm_init() declaration/type
  ARM: Kirkwood: make kirkwood_disable_mbus_error_propagation() static
  ARM: orion5x: make orion5x_legacy_handle_irq static
  ...
2016-08-01 18:21:13 -04:00
Andy Yan 4fcd504edb power: reset: add reboot mode driver
This driver parses the reboot commands like "reboot bootloader"
and "reboot recovery" to get a boot mode described in the
device tree , then call the write interfae to store the boot
mode in some place like special register or sram, which can
be read by the bootloader after system reboot, then the bootloader
can take different action according to the mode stored.

This is commonly used on Android based devices, in order to
reboot the device into fastboot or recovery mode.

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Moritz Fischer <moritz.fischer@ettus.com>
Tested-by: John Stultz <john.stultz@linaro.org>
Acked-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-07-06 17:16:27 +02:00
Ben Dooks 0a14d280e1 power: vexpress: make dev_attr_active static
The dev_attr_active is not exported or defined to be used
outside the driver, so make it static to avoid the following
warning:

drivers/power/reset/vexpress-poweroff.c:77:1: warning: symbol 'dev_attr_active' was not declared. Should it be static?

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2016-06-13 09:55:51 +01:00
Ben Dooks d04b674e18 power/reset: make syscon_poweroff() static
The syscon_poweroff() function is not exported or declared for
usage elsewhere, so make it static to avoid the folloiwing warning:

drivers/power/reset/syscon-poweroff.c:33:6: warning: symbol 'syscon_poweroff' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-06-10 03:52:13 +02:00
Chris Brand 783cb948d7 power: Introduce Broadcom kona reset driver
This driver supports reset on both BCM21664 and BCM23550.
Code is being moved from arch/arm/mach-bcm/board_bcm21664.c

Signed-off-by: Chris Brand <chris.brand@broadcom.com>
Acked-By: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2016-06-06 16:17:33 -07:00
Krzysztof Kozlowski e771e0a1e4 power: reset: keystone: Enable COMPILE_TEST
Enable the COMPILE_TEST to get build coverage, except on platforms
!HAS_IOMEM (required by selected MFD_SYSCON).

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-06-03 04:16:15 +02:00
Nicolas Ferre f80cb48843 power: reset: at91-shdwc: add new shutdown controller driver
Sama5d2 SoC has a completely new shutdown controller with new features and
register layout. It thus makes sense to add a new driver for this new
peripheral.

This driver is Device Tree only and handles events from the wake-up pin and
the RTC.
As the register layout may change in the future, so some values are encoded
in a configuration structure.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-04-10 17:17:38 +02:00
Richard Weinberger 4f4bfe6bf1 power: reset: Fix dependencies for !HAS_IOMEM archs
Not every arch has io memory.
So, unbreak the build by fixing the dependencies.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-02-15 06:06:07 +01:00
Linus Walleij 3f652c969d power/reset: versatile: support the actual versatile
While this driver is named after the Versatile family of
boards (ARM reference designs) the machine actually called
Versatile was not supported. This patch makes the driver
handle also that machine. We augment the register names for
the reset to *VERSATILE* as well since it is the same
register offsets for Versatile and RealView.

Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-02-15 05:45:22 +01:00
Julia Lawall c4c0edfbf8 power/reset: at91-reset: add missing of_node_put
for_each_matching_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
expression e,e1;
local idexpression np;
@@

 for_each_matching_node(np, e1) {
   ... when != of_node_put(np)
       when != e = np
(
   return np;
|
+  of_node_put(np);
?  return ...;
)
   ...
 }
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-12-05 02:06:49 +01:00
Nicolas Ferre bc312cbdfa power: reset: at91-reset/trivial: driver applies to SAMA5 family as well
This diver doesn't applies only on SAM9 SoC families but on SAMA5 families
as well.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-09-22 15:45:39 +02:00
Alexandre Belloni 064380a12e power/reset: at91-poweroff: get and use slow clock
Commit dca1a4b5ff ("clk: at91: keep slow clk enabled to prevent system
hang") added a workaround for the slow clock as it is not properly handled
by its users.

Get and use the slow clock as it is necessary for the at91 shutdown
controller.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-09-22 15:18:53 +02:00
Alexandre Belloni 6dd1ad1f23 power/reset: at91-poweroff: allow compiling as a module
It was not possible to compile at91-poweroff as a module. Implement
.remove() to allow it. Also switch to module_platform_driver_probe() as it
is not hotpluggable.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-09-22 15:18:53 +02:00
Alexandre Belloni 2b2c6148fe power/reset: at91-reset: get and use slow clock
Commit dca1a4b5ff ("clk: at91: keep slow clk enabled to prevent system
hang") added a workaround for the slow clock as it is not properly handled
by its users.

Get and use the slow clock as it is necessary for the at91 reset
controller.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-09-22 15:18:52 +02:00
Alexandre Belloni 6e64180a7c power/reset: at91-reset: allow compiling as a module
It was not possible to compile at91-reset as a module. Implement .remove()
to allow it. Also switch to module_platform_driver_probe() as it is not
hotpluggable.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-09-22 15:18:52 +02:00
Alexandre Belloni eacd8d09db power/reset: at91-reset: remove useless at91_reset_platform_probe()
Since all the at91 platforms are now DT only, at91_reset_platform_probe()
is now useless, remove it.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-09-22 15:18:52 +02:00
Jun Nie 3309aa4941 power/reset: zx: Remove unnecessary include file
Including ARM related header file cause build failure
in i386 build because COMILE_TEST also involve building
zx driver. Remove the unnecessary include file.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-07-27 15:33:30 +02:00
Jun Nie dd9f1486ae power/reset: zx: Register restart handler
Register with kernel restart handler instead of setting arm_pm_restart
directly.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-07-24 17:29:17 +02:00
Josh Wu 1ae25d626c power: reset: at91: add sama5d3 reset function
This patch introduces a new compatible string: "atmel,sama5d3-rstc" and
new reset function for sama5d3 and later chips.

As in sama5d3 or later chips, we don't have to shutdown the DDR
controller before reset. Shutdown the DDR controller before reset is a
workaround to avoid DDR signal driving the bus, but since sama5d3 and
later chips there is no such a conflict.

So in this patch:
   1. the sama5d3 reset function only need to write the rstc register
and return.
   2. we can remove the code related with sama5d3 DDR controller as
we don't use it at all.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-07-20 18:12:09 +02:00
Linus Torvalds 75462c8a87 Replace module_platform_driver with builtin_platform driver in non modules.
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Merge tag 'module-builtin_driver-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull module_platform_driver replacement from Paul Gortmaker:
 "Replace module_platform_driver with builtin_platform driver in non
  modules.

  We see an increasing number of non-modular drivers using
  modular_driver() type register functions.  There are several downsides
  to letting this continue unchecked:

   - The code can appear modular to a reader of the code, and they won't
     know if the code really is modular without checking the Makefile
     and Kconfig to see if compilation is governed by a bool or
     tristate.

   - Coders of drivers may be tempted to code up an __exit function that
     is never used, just in order to satisfy the required three args of
     the modular registration function.

   - Non-modular code ends up including the <module.h> which increases
     CPP overhead that they don't need.

   - It hinders us from performing better separation of the module init
     code and the generic init code.

  So here we introduce similar macros for builtin drivers.  Then we
  convert builtin drivers (controlled by a bool Kconfig) by making the
  following type of mapping:

    module_platform_driver()       --->  builtin_platform_driver()
    module_platform_driver_probe() --->  builtin_platform_driver_probe().

  The set of drivers that are converted here are just the ones that
  showed up as relying on an implicit include of <module.h> during a
  pending header cleanup.  So we convert them here vs adding an include
  of <module.h> to non-modular code to avoid compile fails.  Additonal
  conversions can be done asynchronously at any time.

  Once again, an unused module_exit function that is removed here
  appears in the diffstat as an outlier wrt all the other changes"

* tag 'module-builtin_driver-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  drivers/clk: convert sunxi/clk-mod0.c to use builtin_platform_driver
  drivers/power: Convert non-modular syscon-reboot to use builtin_platform_driver
  drivers/soc: Convert non-modular soc-realview to use builtin_platform_driver
  drivers/soc: Convert non-modular tegra/pmc to use builtin_platform_driver
  drivers/cpufreq: Convert non-modular s5pv210-cpufreq.c to use builtin_platform_driver
  drivers/cpuidle: Convert non-modular drivers to use builtin_platform_driver
  drivers/platform: Convert non-modular pdev_bus to use builtin_platform_driver
  platform_device: better support builtin boilerplate avoidance
2015-07-02 10:42:13 -07:00
Linus Torvalds 36a1624d88 power supply and reset changes for the v4.2 series
* New charger drivers: BQ24257, BQ25890, AXP288, RT9455
  * MAX17042 battery: add health & temperature support
  * BQ2415x charger: add ACPI support
  * misc. fixes and cleanups
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Merge tag 'for-4.2' of git://git.infradead.org/battery-2.6

Pull power supply and reset updates from Sebastian Reichel:

 - new charger drivers: BQ24257, BQ25890, AXP288, RT9455

 - MAX17042 battery: add health & temperature support

 - BQ2415x charger: add ACPI support

 - misc fixes and cleanups

* tag 'for-4.2' of git://git.infradead.org/battery-2.6: (32 commits)
  power_supply: Correct kerneldoc copy paste errors
  wm831x_power: Fix off-by-one at free_irq()
  power_supply: rt9455_charger: Fix error reported by static analysis tool
  power_supply: bq24257: use flags argument of devm_gpiod_get
  power_supply: bq25890: use flags argument of devm_gpiod_get
  sbs-battery: add option to always register battery
  power: Add devm_power_supply_get_by_phandle() helper function
  power_supply: max17042: Add OF support for setting thresholds
  power_supply: sysfs: Bring back write to writeable properties
  power_supply: rt9455_charger: Check if CONFIG_USB_PHY is enabled
  power: reset: gpio-restart: increase priority slightly
  power_supply: bq25890: make chip_id int
  power_supply: Add support for Richtek RT9455 battery charger
  Documentation: devicetree: Add Richtek RT9455 bindings
  of: Add vendor prefix for Richtek Technology Corporation
  power_supply: 88pm860x_charger: Do not call free_irq() twice
  power: bq24190_charger: Change first_time flag reset condition
  power: axp288_charger: axp288 charger driver
  power: max17042_battery: add HEALTH and TEMP_* properties support
  power_supply: Add support for TI BQ25890 charger chip
  ...
2015-06-23 16:10:27 -07:00
Paul Gortmaker e35415e59f drivers/power: Convert non-modular syscon-reboot to use builtin_platform_driver
This file depends on Kconfig options all of which are a bool, so
we use the appropriate registration function, which avoids us
relying on an implicit inclusion of <module.h> which we are
doing currently.

While this currently works, we really don't want to be including
the module.h header in non-modular code, which we'd be forced
to do, pending some upcoming code relocation from init.h into
module.h.  So we fix it now by using the non-modular equivalent.

Cc: Sebastian Reichel <sre@kernel.org>
Acked-By: Sebastian Reichel <sre@kernel.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2015-06-16 14:12:38 -04:00
Heiko Stübner bcd56fe1aa power: reset: gpio-restart: increase priority slightly
gpio-restart uses a priority of 128 and currently most soc-level restart
mechanisms use the same - with some exceptions even using 192.
But while the soc-level restarts are provided by the soc itself,
gpio-restarts will most of the time be board-specfic and be used
when some special board condition makes the soc-level restart
only a second choice.

The problem at hand manifested itself on the rk3288-veyron devices.
While the soc-level restart can sucessfully restart all other rockchip
boards I have, the veyron devices use an external restart mechanism that
seems to not only reset the soc but also some external needed components.

With both restart handlers having priority 128 in my tests the soc-specific
variant took precedent in all cases. While it could restart the soc
sucessfully in all cases, firmware then got an issue when talking to an
external component, resulting in the device being put into recovery mode.

So, give the board-specific restart handler a slight push and move it
to priority 129 to make it more important than the generic soc-specific
restart-handler.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-06-02 20:59:03 +02:00
Uwe Kleine-König 9f6cd98fc3 power: reset: ltc2952: use _optional variant of devm_gpiod_get
devm_gpiod_get_optional returns NULL if devm_gpiod_get would return an
ENOENT error pointer.

There is no semantic change intended.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-05-23 20:03:42 +02:00
Uwe Kleine-König a34c0a8bf8 power: reset: gpio-poweroff: let devm_gpiod_get set direction of gpio
Since 39b2bbe3d7 (gpio: add flags argument to gpiod_get*() functions)
which appeared in v3.17-rc1, the gpiod_get* functions take an additional
parameter that allows to specify direction and initial value for output.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-05-23 20:03:30 +02:00
Krzysztof Kozlowski 3236672092 power: at91-reset: Constify platform_device_id
The platform_device_id is not modified by the driver and core uses it as
const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-05-23 19:44:23 +02:00
Thomas Gleixner c3b5d3cea5 Merge branch 'linus' into timers/core
Make sure the upstream fixes are applied before adding further
modifications.
2015-05-19 16:12:32 +02:00
Florian Fainelli 0a73125d30 power: reset: Add MFD_SYSCON depends for brcmstb
The Broadcom STB reboot driver depends on MFD_SYSCON, it uses
syscon_regmap_lookup_by_phandle() which will not lookup syscon phandles
if MFD_SYSCON is disabled, and instead will return -ENOSYS since it is
turned into an inline stub.

Fixes: 030494e750 ("power: reset: Add reboot driver for brcmstb")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-05-01 22:48:28 +02:00
Thomas Gleixner d8818257d3 power: reset: ltc2952: Remove bogus hrtimer_start() return value checks
The return value of hrtimer_start() tells whether the timer was
inactive or active already when hrtimer_start() was called.

The code emits a bogus warning if the timer was active already
claiming that the timer could not be started.

Remove it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Frans Klaver <frans.klaver@xsens.com>
Cc: "René Moll" <linux@r-moll.nl>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-pm@vger.kernel.org
Acked-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-04-30 17:47:17 +02:00
Wei Yongjun 932df43005 power/reset: at91: fix return value check in at91_reset_platform_probe()
In case of error, the function devm_ioremap() returns NULL
not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Fixes: ecfe64d8c5 ("power: reset: Add AT91 reset driver")
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-04-30 17:33:52 +02:00
Thomas Gleixner 4101ecc23d power: reset: ltc2952: Remove bogus hrtimer_start() return value checks
The return value of hrtimer_start() tells whether the timer was
inactive or active already when hrtimer_start() was called.

The code emits a bogus warning if the timer was active already
claiming that the timer could not be started.

Remove it along with the bogus comment in the else path.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Frans Klaver <frans.klaver@xsens.com>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-pm@vger.kernel.org
2015-04-23 14:38:01 +02:00
Moritz Fischer 8a577608ba power: reset: Add generic SYSCON register mapped poweroff.
Add a generic SYSCON register mapped poweroff mechanism.

Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-04-06 18:49:48 +02:00
Ben Dooks 7be5ac2c32 power/reset: at91: big endian fixes for atsama5d3x
Fix the passing of big endian data to routines that will be writing
it to the bus in the wrong order.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-03-26 15:21:00 +01:00
Fabian Frederick 8fb0885504 power: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>

[for vexpress]
Acked-by: Sudeep Holla <sudeep.holla@arm.com>

Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-03-20 13:23:06 +01:00
Richard Weinberger 039ab50bda power/reset/rmobile-reset.c: Fix !HAS_IOMEM build
Fixes:
drivers/power/reset/rmobile-reset.c: In function ‘rmobile_reset_probe’:
drivers/power/reset/rmobile-reset.c:61:2: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration]
  iounmap(sysc_base2);

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-03-20 13:06:01 +01:00
Guenter Roeck 7bae8f0481 power/reset: restart-poweroff: Remove arm dependencies
This driver is now arm specific anymore, so there is no need to include
an arm specific include file. Also drop unnecessary depencency on ARM
from Kconfig.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-25 22:13:18 +01:00
Guenter Roeck 7fa650bc0d power/reset: st-poweroff: Fix misleading Kconfig description
The st-poweroff driver does not really power off the system
but resets it, so Kconfig should not claim that the driver
would handle power-off.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-25 22:13:17 +01:00
Guenter Roeck 453fe4f11c power/reset: st-poweroff: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart
directly. Select high priority since the restart handler is instantiated
through devicetree, indicating that it should be used if configured.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-25 22:13:16 +01:00
Guenter Roeck b2b3a8b934 power/reset: Remove sun6i reboot driver
sun6i restart is now handled by its watchdog driver directly,
so this driver is no longer needed.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-25 22:13:07 +01:00
Guenter Roeck 481ff6ff96 power/reset: at91: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart
directly. Register with high priority since the driver unconditionally
overwrites other restart handlers if instantiated.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-25 22:12:45 +01:00
Guenter Roeck 25a5b57dd7 power/reset: arm-versatile: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart
directly. Select high priority since the restart handler is instantiated
through devicetree, indicating that it should be used if configured.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-25 22:12:45 +01:00
Kevin Cernekee 79969f6aaf power/reset: brcmstb: Add support for old 65nm chips
The register bit fields are a little different, so add an entry and a
compatible string to accommodate them.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-22 02:25:32 +01:00
Kevin Cernekee bb1de7f61f power/reset: brcmstb: Use the DT "compatible" string to indicate bit positions
Some of the older chips used different bits to arm and trigger the reset.
Add the infrastructure needed to specify this through the "compatible"
string.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-22 02:25:32 +01:00
Kevin Cernekee 4f5fd64046 power/reset: brcmstb: Make the driver buildable on MIPS
Now that the driver doesn't use any ARM-specific headers, it is safe
to build on MIPS or with COMPILE_TEST.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-22 02:25:31 +01:00
Guenter Roeck a538cf04ef power/reset: at91-poweroff: Fix error handling and other compiler warnings
at91_poweroff_get_wakeup_mode can return a negative error code and should
therefore not return an enum type. Similar, its result should not be
assigned to an enum type. Otherwise, the returned value is never negative,
resulting in a compiler warning and a missed error condition, which in turn
results in writing bad values into a chip register.

Also fix other compiler warnings which can be easily avoided.

drivers/power/reset/at91-poweroff.c:74:24:
	warning: type qualifiers ignored on function return type
drivers/power/reset/at91-poweroff.c:74:24:
	warning: no previous prototype for 'at91_poweroff_get_wakeup_mode'
drivers/power/reset/at91-poweroff.c:83:16:
	warning: comparison between signed and unsigned integer expressions
drivers/power/reset/at91-poweroff.c:97:2:
	warning: comparison of unsigned expression < 0 is always false

Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-21 20:06:44 +01:00
Geert Uytterhoeven fa0f8d6700 power: reset: Add reset driver for R-Mobile platforms
Add a reset driver for Renesas R-Mobile and SH-Mobile SoCs. It registers
a restart handler to trigger a soft power-on reset through the R-Mobile
System Controller.
The priority of this restart handler is 192, to allow a watchdog driver
to use priority 128.

Note that we do not use syscon-reboot, as the HPB (Peripheral Bus
Bridge) semaphore should be acquired on systems where both the ARM and
SH core are in use. The driver can be extended later to support this,
when needed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-21 16:32:05 +01:00
Pawel Moll 8f961c0a53 power/reset: vexpress: Remove non-DT code
Now, as all VE platforms have to be booted with DT,
the code handling non-DT case can be removed.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-21 03:19:54 +01:00
Frans Klaver ee18185331 power: reset: ltc2952: make trigger input optional
Currently the ltc2952 supports only one button sequence to initiate
powerdown. This is not always desirable, as even prolonged button
presses can happen in use.

Allow ltc2952 users to pick their own power down sequence, by making the
trigger input optional. Since this still means that the ltc2952 may
power down the platform if the power button is pressed for about 5
seconds, we still need to make sure to start the watchdog toggle to
prolong the system power for as long as we need it.

This will still allow the system to control power using the kill signal.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:31 +01:00
Frans Klaver c1ada2ff80 power: reset: ltc2952: check trigger value before starting timer
In ltc2952_poweroff_handler it is theoretically possible that the timer
fails to start on first pass (button press), but succeeds in starting on
the second (button release). This will cause the button press to be
misinterpreted, and will incorrectly shut down the system. Because a
picture says more than a thousand words:

Expected behavior:
tmr:      ++++++++++
btn: -----__________-----

Faulty behavior:
tmr:                +++++
btn: -----__________-----

Legend:
+ timer runs
_ button pressed
- button depressed

To prevent this from happening, check the value of the gpio before
starting the timer. If the button is active, we should start the timer,
else we should stop it.

The situation described can now still occur if the polarity of the input
pin is set incorrectly, but that at least is predictable behavior and
can be detected during the first tests.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:30 +01:00
Frans Klaver 2f6ea8ad73 power: reset: ltc2952: disable timers in _remove
Disable the timers when ltc2952_poweroff is removed. We don't want to
risk calling functions on data that no longer exist.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:30 +01:00
Frans Klaver 5689b786f7 power: reset: ltc2952: fix C++ style function pointers
The function pointers for the timers and pm_power_off are assigned with
C++ style
	foo = &func;

Let's change it instead to the more C style
	foo = func;

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:30 +01:00
Frans Klaver 5c3faad29b power: reset: ltc2952: cleanup control flow in poweroff_handler
ltc2952_poweroff_handler uses gotos to return from the function. Since
we don't do cleanups exiting this function, just return IRQ_HANDLED on
the spot and be done with it.

While at it, remove the variable 'ret'. It was never used very much.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:30 +01:00
Frans Klaver 0428c40d4c power: reset: ltc2952: drop empty suspend/resume functions
Documentation/SubmittingDrivers suggests these be implemented even when
they do nothing. On the other hand, the platform code calls these
functions 'legacy'. Suspend and resume operations should go into a
pm_ops structure, pointed at by the driver's pm field. This approach
would lead to a lot of boiler plate, while achieving nothing. Drop the
functions instead.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:29 +01:00
Frans Klaver 818ca4c8c7 power: reset: ltc2952: remove global variable poweroff_panic
As per Documentation/CodingStyle ch.4, we should keep global variables
to a mininum. Move the panic state into the driver data, regardless of
whether panic is a system state or not.

This removes the need for the custom _init and _exit functions, so
replace them with a call to the module_platform_driver() macro.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:28 +01:00
Frans Klaver a5f67be520 power: reset: ltc2952: reduce dependency on global variables
Documentation/CodingStyle ch.4 mentions in a side node that global
variables should only be used if you really need them. Reduce the use of
the global instance of ltc2952_poweroff so we may eventually remove it
entirely.

While at it, rename ltc2952_poweroff_data to ltc2952_poweroff, just to
save that little bit of typing.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:28 +01:00
Frans Klaver 62113b3117 power: reset: ltc2952: prefer devm_gpiod_get over gpiod_get
This reduces cleanup code and chance of errors.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:28 +01:00
Frans Klaver f66472df69 power: reset: ltc2952: unroll gpio_desc array
The three gpio's used by this driver are stored in an array of pointers.
This doesn't add much besides cleanups in a loop. In fact, it makes most
of the usage sites harder to read. Unroll the loop, and live with the
fact that cleanups become slightly larger.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:28 +01:00
Frans Klaver 07d08237d3 power: reset: ltc2952: prefer devm_request_irq over request_irq
Make use of the fact that we allocated resources can be automatically
deallocated. This reduces cleanup code and chance of errors. It also
removes the need for the virq member of the ltc2952_poweroff_data
struct.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:28 +01:00
Frans Klaver 0a5c6a2276 power: reset: ltc2952: prefer devm_kzalloc over kzalloc
Make use of the fact that the allocated resources can be automatically
deallocated. This reduces cleanup code and chance of leaks.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:27 +01:00
Linus Walleij 0160817d10 power: reset: augment versatile driver for integrator
Augment the Versatile reset driver to also handle the core
module reset sequence used on the Integrator/AP and
Integrator/CP.

Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-01-20 13:58:27 +01:00
Linus Torvalds 7051d8e630 power supply and reset changes for the v3.19 series
* update power/reset drivers to use kernel restart handler
 * add power off driver for i.mx6
 * add DT support for gpio-charger
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Merge tag 'for-v3.19' of git://git.infradead.org/battery-2.6

Pull power supply updates from Sebastian Reichel::
 "Power supply and reset changes for the v3.19 series

   - update power/reset drivers to use kernel restart handler
   - add power off driver for i.mx6
   - add DT support for gpio-charger"

* tag 'for-v3.19' of git://git.infradead.org/battery-2.6:
  power: reset: adjust priority of simple syscon reboot driver
  power: ds2782_battery: Simplify the PM hooks
  power/reset: brcmstb: Register with kernel restart handler
  power/reset: hisi: Register with kernel restart handler
  power/reset: keystone: Register with kernel restart handler
  power/reset: axxia: Register with kernel restart handler
  power/reset: xgene: Register with kernel restart handler
  power/reset: xgene: Use mdelay instead of jiffies based timeout
  power/reset: xgene: Use local variable dev instead of pdev->dev
  power/reset: xgene: Drop devm_kfree
  power/reset: xgene: Return -ENOMEM if out of memory
  power/reset: vexpress: Register with kernel restart handler
  power: reset: imx-snvs-poweroff: add power off driver for i.mx6
  power: gpio-charger: add device tree support
  dt-bindings: document gpio-charger bindings
2014-12-15 17:36:45 -08:00
Linus Torvalds e6b5be2be4 Driver core patches for 3.19-rc1
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00
Linus Torvalds 6cd94d5e57 ARM: SoC platform changes for 3.19
New and updated SoC support, notable changes include:
 
 * bcm: brcmstb SMP support
 * bcm: initial iproc/cygnus support
 * exynos: Exynos4415 SoC support
 * exynos: PMU and suspend support for Exynos5420
 * exynos: PMU support for Exynos3250
 * exynos: pm related maintenance
 * imx: new LS1021A SoC support
 * imx: vybrid 610 global timer support
 * integrator: convert to using multiplatform configuration
 * mediatek: earlyprintk support for mt8127/mt8135
 * meson: meson8 soc and l2 cache controller support
 * mvebu: Armada 38x CPU hotplug support
 * mvebu: drop support for prerelease Armada 375 Z1 stepping
 * mvebu: extended suspend support, now works on Armada 370/XP
 * omap: hwmod related maintenance
 * omap: prcm cleanup
 * pxa: initial pxa27x DT handling
 * rockchip: SMP support for rk3288
 * rockchip: add cpu frequency scaling support
 * shmobile: r8a7740 power domain support
 * shmobile: various small restart, timer, pci apmu changes
 * sunxi: Allwinner A80 (sun9i) earlyprintk support
 * ux500: power domain support
 
 Overall, a significant chunk of changes, coming mostly from
 the usual suspects: omap, shmobile, samsung and mvebu, all of
 which already contain a lot of platform specific code in
 arch/arm.
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Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform changes from Arnd Bergmann:
 "New and updated SoC support, notable changes include:

   - bcm:
        brcmstb SMP support
        initial iproc/cygnus support
   - exynos:
        Exynos4415 SoC support
        PMU and suspend support for Exynos5420
        PMU support for Exynos3250
        pm related maintenance
   - imx:
        new LS1021A SoC support
        vybrid 610 global timer support
   - integrator:
        convert to using multiplatform configuration
   - mediatek:
        earlyprintk support for mt8127/mt8135
   - meson:
        meson8 soc and l2 cache controller support
   - mvebu:
        Armada 38x CPU hotplug support
        drop support for prerelease Armada 375 Z1 stepping
        extended suspend support, now works on Armada 370/XP
   - omap:
        hwmod related maintenance
        prcm cleanup
   - pxa:
        initial pxa27x DT handling
   - rockchip:
        SMP support for rk3288
        add cpu frequency scaling support
   - shmobile:
        r8a7740 power domain support
        various small restart, timer, pci apmu changes
   - sunxi:
        Allwinner A80 (sun9i) earlyprintk support
   - ux500:
        power domain support

  Overall, a significant chunk of changes, coming mostly from the usual
  suspects: omap, shmobile, samsung and mvebu, all of which already
  contain a lot of platform specific code in arch/arm"

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (187 commits)
  ARM: mvebu: use the cpufreq-dt platform_data for independent clocks
  soc: integrator: Add terminating entry for integrator_cm_match
  ARM: mvebu: add SDRAM controller description for Armada XP
  ARM: mvebu: adjust mbus controller description on Armada 370/XP
  ARM: mvebu: add suspend/resume DT information for Armada XP GP
  ARM: mvebu: synchronize secondary CPU clocks on resume
  ARM: mvebu: make sure MMU is disabled in armada_370_xp_cpu_resume
  ARM: mvebu: Armada XP GP specific suspend/resume code
  ARM: mvebu: reserve the first 10 KB of each memory bank for suspend/resume
  ARM: mvebu: implement suspend/resume support for Armada XP
  clk: mvebu: add suspend/resume for gatable clocks
  bus: mvebu-mbus: provide a mechanism to save SDRAM window configuration
  bus: mvebu-mbus: suspend/resume support
  clocksource: time-armada-370-xp: add suspend/resume support
  irqchip: armada-370-xp: Add suspend/resume support
  ARM: add lolevel debug support for asm9260
  ARM: add mach-asm9260
  ARM: EXYNOS: use u8 for val[] in struct exynos_pmu_conf
  power: reset: imx-snvs-poweroff: add power off driver for i.mx6
  ARM: imx: temporarily remove CONFIG_SOC_FSL from LS1021A
  ...
2014-12-09 14:38:28 -08:00
Stefan Agner b81180b3fd power: reset: adjust priority of simple syscon reboot driver
Currently, all restart handler use the priority 128, including
watchdogs. Probably most SoC have a watchdog, and some of them
register it also as a restart handler. But if a SoC specifies
a dedicated reboot capability using this syscon driver, this is
usually the preferred reboot method. Hence, raise the priority
of this driver to 192.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-12-03 20:38:30 +01:00
Robin Gong 3db47dc0ae power: reset: imx-snvs-poweroff: add power off driver for i.mx6
This driver register pm_power_off with snvs power off function. If
your boards NOT use PMIC_ON_REQ to turn on/off external pmic, or use
other pin to do, please disable the driver in dts, otherwise, your
pm_power_off maybe overwrote by this driver.

Signed-off-by: Robin Gong <b38343@freescale.com>
Acked-By: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2014-11-23 14:57:11 +08:00
Guenter Roeck 6136c41ae9 power/reset: brcmstb: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart directly.

Cc: Marc Carino <marc.ceeeee@gmail.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:10 +01:00
Guenter Roeck 6724534c79 power/reset: hisi: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart directly.

Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:10 +01:00
Guenter Roeck f59a42d4e1 power/reset: keystone: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart directly.

Move notifier registration to the end of the probe function to avoid having to
implement error handling.

Cc: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:10 +01:00
Guenter Roeck fcf01c51f0 power/reset: axxia: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart
directly.

Cc: Anders Berg <anders.berg@lsi.com>
Tested-by: Anders Berg <anders.berg@avagotech.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:10 +01:00
Guenter Roeck 8f57f2310f power/reset: xgene: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart directly.

This patch also addresses the following compile warning.

drivers/power/reset/xgene-reboot.c: In function 'xgene_reboot_probe':
drivers/power/reset/xgene-reboot.c:77:17: warning:
	assignment from incompatible pointer type [enabled by default]

The warning was due to a mismatch between the type of arm_pm_restart
and the restart function.

Cc: Loc Ho <lho@apm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:09 +01:00
Guenter Roeck 745e19764a power/reset: xgene: Use mdelay instead of jiffies based timeout
jiffies are not running at this stage of system shutdown, meaning an
error in the reset function would never be reported. Replace with mdelay().

Cc: Loc Ho <lho@apm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:09 +01:00
Guenter Roeck 43160718d9 power/reset: xgene: Use local variable dev instead of pdev->dev
Using a local variable dev to point to the device is simpler then repeatedly
dereferencing pdev->dev.

Cc: Loc Ho <lho@apm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:09 +01:00
Guenter Roeck 22ecd65f40 power/reset: xgene: Drop devm_kfree
Calling devm_kfree is unnecessary. Drop it.

Cc: Loc Ho <lho@apm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:09 +01:00
Guenter Roeck ef288f9f65 power/reset: xgene: Return -ENOMEM if out of memory
It is customary to return an error code of -ENOMEM if the system
is out of memory. Also, in that case, the infrastructure will report
an error, so it is unnecessary to report it again.

Cc: Loc Ho <lho@apm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:09 +01:00
Guenter Roeck 46c99ac662 power/reset: vexpress: Register with kernel restart handler
Use the kernel restart handler instead of setting arm_pm_restart directly.
This allows for more than one restart handler in the system.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-11-17 03:07:08 +01:00
Robin Gong b8e64eea41 power: reset: imx-snvs-poweroff: add power off driver for i.mx6
This driver register pm_power_off with snvs power off function. If
your boards NOT use PMIC_ON_REQ to turn on/off external pmic, or use
other pin to do, please disable the driver in dts, otherwise, your
pm_power_off maybe overwrote by this driver.

Signed-off-by: Robin Gong <b38343@freescale.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-11-17 03:07:08 +01:00
Alexandre Belloni f0a0a58e6f ARM: at91: move sdramc/ddrsdr header to include/soc/at91
Move the (DDR) SDRAM controller headers to include/soc/at91 to remove the
dependency on mach/ headers from the at91-reset driver.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-11-13 12:03:44 +01:00
Greg Kroah-Hartman a8a93c6f99 Merge branch 'platform/remove_owner' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next
Remove all .owner fields from platform drivers
2014-11-03 19:53:56 -08:00
Alexandre Belloni 7cb4e717d4 power: reset: at91-reset: fix power down register
In the case of at91sam9g45_restart(), the driver is writing
AT91_DDRSDRC_LPCB_POWER_DOWN to AT91_DDRSDRC_RTR, this should actually be
AT91_DDRSDRC_LPR.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-10-22 10:08:22 +02:00
Wolfram Sang 5938ee2bb2 power: reset: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:21:28 +02:00
Linus Torvalds 50fa86172b power supply and reset changes for the v3.18 series
- Initial support for the following chips
   * max77836 (charger)
   * max14577 (charger)
   * bq27742 (battery gauge)
   * ltc2952 (poweroff)
   * stih416 (restart)
   * syscon-reboot (restart)
   * gpio-restart (restart)
  - cleanup of power supply core
  - misc. fixes in power supply and reset drivers
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Merge tag 'for-v3.18' of git://git.infradead.org/battery-2.6

Pull power supply and reset updates from Sebastian Reichel:
 - Initial support for the following chips
   * max77836 (charger)
   * max14577 (charger)
   * bq27742 (battery gauge)
   * ltc2952 (poweroff)
   * stih416 (restart)
   * syscon-reboot (restart)
   * gpio-restart (restart)
 - cleanup of power supply core
 - misc fixes in power supply and reset drivers

* tag 'for-v3.18' of git://git.infradead.org/battery-2.6: (48 commits)
  power: ab8500_fg: Fix build warning
  Documentation: charger: max14577: Update the date of introducing ABI
  power: reset: corrections for simple syscon reboot driver
  Documentation: power: reset: Add documentation for generic SYSCON reboot driver
  power: reset: Add generic SYSCON register mapped reset
  bq27x00_battery: Fix flag reading for bq27742
  power: reset: use restart_notifier mechanism for msm-poweroff
  power: Add simple gpio-restart driver
  power: reset: st: Provide DT bindings for ST's Power Reset driver
  power: reset: Add restart functionality for STiH41x platforms
  power: charger-manager: Fix NULL pointer exception with missing cm-fuel-gauge
  power: max14577: Fix circular config SYSFS dependency
  power: gpio-charger: do not use gpio value directly
  power: max8925: Use of_get_child_by_name
  power: max8925: Fix NULL ptr dereference on memory allocation failure
  bq27x00_battery: Add support to bq27742
  Documentation: charger: max14577: Document exported sysfs entry
  devicetree: mfd: max14577: Add device tree bindings document
  power: max17040: Add ID for MAX77836 Fuel Gauge block
  charger: max14577: Configure battery-dependent settings from DTS and sysfs
  ...

Conflicts:
	drivers/power/reset/Kconfig
	drivers/power/reset/Makefile
2014-10-15 06:56:23 +02:00
Linus Torvalds 93834c6419 Immutable branch with restart handler patches for v3.18
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Merge tag 'restart-handler-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull restart handler infrastructure from Guenter Roeck:
 "This series was supposed to be pulled through various trees using it,
  and I did not plan to send a separate pull request.  As it turns out,
  the pinctrl tree did not merge with it, is now upstream, and uses it,
  meaning there are now build failures.

  Please pull this series directly to fix those build failures"

* tag 'restart-handler-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  arm/arm64: unexport restart handlers
  watchdog: sunxi: register restart handler with kernel restart handler
  watchdog: alim7101: register restart handler with kernel restart handler
  watchdog: moxart: register restart handler with kernel restart handler
  arm: support restart through restart handler call chain
  arm64: support restart through restart handler call chain
  power/restart: call machine_restart instead of arm_pm_restart
  kernel: add support for kernel restart handler call chain
2014-10-10 16:38:02 -04:00
Feng Kan afaebbdbd4 power: reset: corrections for simple syscon reboot driver
This patch is to fix some bugs in reboot driver. Which includes auto selection
of the MFD_SYSCON for the driver, use of container to locate restart handler,
correction of the count down failure timer and ordering of the header file.

Signed-off-by: Feng Kan <fkan@apm.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
[ sre: return err instead of 0 in syscon_reboot_probe() ]
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-10-03 04:32:08 +02:00
Feng Kan 09fb07bcaf power: reset: Add generic SYSCON register mapped reset
Add a generic SYSCON register mapped reset mechanism.

Signed-off-by: Feng Kan <fkan@apm.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-10-01 04:21:05 +02:00
Pramod Gurav 18a702e0de power: reset: use restart_notifier mechanism for msm-poweroff
This change replaces use of arm_pm_restart with recently introduced
reset mechanism in Linux kernel called restart_notifier.

Choosing priority 128, which is default priority, as according to
documentation, this mechanism is sufficient to restart the entire system.

Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Josh Cartwright <joshc@codeaurora.org>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-pm@vger.kernel.org

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26 19:54:33 +02:00
David Riley 371bb20d69 power: Add simple gpio-restart driver
This driver registers a restart handler to set a GPIO line high/low
to reset a board based on devicetree bindings.

Signed-off-by: David Riley <davidriley@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26 19:51:15 +02:00
Sebastian Reichel 1670d8569e Immutable branch with restart handler patches for v3.18
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Merge tag 'tags/restart-handler-for-v3.18' into next

Immutable branch with restart handler patches for v3.18
2014-09-26 19:45:11 +02:00
Lee Jones f0745f3696 power: reset: Add restart functionality for STiH41x platforms
This driver adds the restart functionality for STiH415 and STiH416
platforms from STMicroelectronics.  This driver registers an
arm_pm_restart function to reset the platform.

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26 17:34:15 +02:00
Guenter Roeck 0713e143c9 power/restart: call machine_restart instead of arm_pm_restart
machine_restart is supported on non-ARM platforms, and and ultimately
calls arm_pm_restart, so dont call arm_pm_restart directly but use the
more generic function.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jonas Jensen <jonas.jensen@gmail.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tomasz Figa <t.figa@samsung.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2014-09-26 00:00:11 -07:00
Linus Walleij 0e545f57b7 power: reset: driver for the Versatile syscon reboot
This driver enabled us to drive the reboot of the Versatile family
of ARM reference boards. Even though only the RealView boards are
supported initially, these boards all have the same procedure for
reboot:

- Write a magic value into an unlocking register
- Write another magic value into a reset control register

The driver will be reusable for Versatile and possibly also the
Integrator family of reference boards.

Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-By: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-09-26 00:25:59 +02:00
René Moll 6647156c00 power: reset: add LTC2952 poweroff driver
This adds a driver for the LTC2952, an external power control chip,
which signals the OS to shut down. Additionally this driver lets the
kernel power down the board.

Signed-off-by: René Moll <rene.moll@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16 11:01:39 +02:00
Mark Brown d3ed534cca power/reset: xgene-reset: Fix prototype of xgene_restart()
The xgene-reset driver uses xgene_restart() as arm_pm_restart() but that
function should take an enum reset_type as the first argument rather than
a char. Fix this; the paramter is not referenced in the implementation.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-06 20:59:07 +02:00
Nicolas Ferre 405a72c5e7 power: reset: at91-poweroff: fix wakeup status register index
The wakeup status is read from Shutdown Status Register and not the
SHDW_CR which is the one at address 0.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-09-01 18:40:44 +02:00
Nicolas Ferre 94d450edfd ARM: at91/power/reset: fix Kconfig "depends on" directive
MACH_AT91 doesn't exist so we can't "depend" on it. Fix the typo
by using the proper ARCH_AT91 config option.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-09-01 18:39:24 +02:00
Nicolas Ferre e657ce689a AT91 reset, poweroff and ram drivers
This tag holds the various new drivers introduced to move code that used to be
 in mach-at91 over to the proper frameworks.
 
 These files are the reboot and poweroff code for all AT91 SoCs but the RM9200,
 and the ram controller driver is not doing much at the time, except for grabing
 the RAM clock in order to leave it always enabled.
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Merge tag 'at91-drivers-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux

Pull AT91 reset, poweroff and ram drivers from Maxime Ripard:
 "This tag holds the various new drivers introduced to move code that used to be
  in mach-at91 over to the proper frameworks.

  These files are the reboot and poweroff code for all AT91 SoCs but the RM9200,
  and the ram controller driver is not doing much at the time, except for grabing
  the RAM clock in order to leave it always enabled."

Conflicts:
	arch/arm/mach-at91/Kconfig
2014-08-25 15:35:26 +02:00
Linus Torvalds b3345d7c57 ARM: SoC platform changes for 3.17
This is the bulk of new SoC enablement and other platform changes for 3.17:
 
 * Samsung S5PV210 has been converted to DT and multiplatform
 * Clock drivers and bindings for some of the lower-end i.MX 1/2 platforms
 * Kirkwood, one of the popular Marvell platforms, is folded into the
   mvebu platform code, removing mach-kirkwood.
 * Hwmod data for TI AM43xx and DRA7 platforms.
 * More additions of Renesas shmobile platform support
 * Removal of plat-samsung contents that can be removed with S5PV210 being
   multiplatform/DT-enabled and the other two old platforms being removed.
 
 New platforms (most with only basic support right now):
 
 * Hisilicon X5HD2 settop box chipset is introduced
 * Mediatek MT6589 (mobile chipset) is introduced
 * Broadcom BCM7xxx settop box chipset is introduced
 
 + as usual a lot other pieces all over the platform code.
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Merge tag 'soc-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform changes from Olof Johansson:
 "This is the bulk of new SoC enablement and other platform changes for
  3.17:

   - Samsung S5PV210 has been converted to DT and multiplatform
   - Clock drivers and bindings for some of the lower-end i.MX 1/2
     platforms
   - Kirkwood, one of the popular Marvell platforms, is folded into the
     mvebu platform code, removing mach-kirkwood
   - Hwmod data for TI AM43xx and DRA7 platforms
   - More additions of Renesas shmobile platform support
   - Removal of plat-samsung contents that can be removed with S5PV210
     being multiplatform/DT-enabled and the other two old platforms
     being removed

  New platforms (most with only basic support right now):

   - Hisilicon X5HD2 settop box chipset is introduced
   - Mediatek MT6589 (mobile chipset) is introduced
   - Broadcom BCM7xxx settop box chipset is introduced

  + as usual a lot other pieces all over the platform code"

* tag 'soc-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (240 commits)
  ARM: hisi: remove smp from machine descriptor
  power: reset: move hisilicon reboot code
  ARM: dts: Add hix5hd2-dkb dts file.
  ARM: debug: Rename Hi3716 to HIX5HD2
  ARM: hisi: enable hix5hd2 SoC
  ARM: hisi: add ARCH_HISI
  MAINTAINERS: add entry for Broadcom ARM STB architecture
  ARM: brcmstb: select GISB arbiter and interrupt drivers
  ARM: brcmstb: add infrastructure for ARM-based Broadcom STB SoCs
  ARM: configs: enable SMP in bcm_defconfig
  ARM: add SMP support for Broadcom mobile SoCs
  Documentation: arm: misc updates to Marvell EBU SoC status
  Documentation: arm: add URLs to public datasheets for the Marvell Armada XP SoC
  ARM: mvebu: fix build without platforms selected
  ARM: mvebu: add cpuidle support for Armada 38x
  ARM: mvebu: add cpuidle support for Armada 370
  cpuidle: mvebu: add Armada 38x support
  cpuidle: mvebu: add Armada 370 support
  cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7
  ARM: mvebu: export the SCU address
  ...
2014-08-08 11:14:29 -07:00
Haojian Zhuang 4a9b373718 power: reset: move hisilicon reboot code
Move reboot code from hisilicon platform driver into reset driver.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Acked-by: Wei Xu <xuwei5@hisilicon.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2014-07-30 22:32:21 -07:00
Marc Carino 030494e750 power: reset: Add reboot driver for brcmstb
Add support for reboot functionality on boards with ARM-based
Broadcom STB chipsets. Make it built-in by default for ARCH_BRCMSTB,
but allow it to be configurable under COMPILE_TEST.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-23 13:49:23 +02:00
Bjorn Helgaas 661468b4e2 power/reset: Fix GPL v2 license string typo
Per license_is_gpl_compatible(), the MODULE_LICENSE() string for GPL v2 is
"GPL v2", not "GPLv2".  Use "GPL v2" so this module doesn't taint the
kernel.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-18 23:40:23 +02:00
Linus Walleij 86336ba4b7 power: poweroff: gpio: convert to use descriptors
This switches the GPIO poweroff driver to use GPIO descriptors
rather than numeral GPIOs. We get rid of the specific inversion
handling as GPIO descriptors know if they are active low or
high and can assert the line properly, so we do not need to
check the flag OF_GPIO_ACTIVE_LOW returned from the old call
of_get_gpio_flags() anymore.

Also convert to use managed resources and use dev_* message
printing while we're at it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-18 23:40:23 +02:00
Maxime Ripard ae499f0fad power: reset: Add AT91 poweroff driver
Add a driver to handle the shutdown of the Atmel SoCs. This code used to be
(and still is) in arch/arm/mach-at91. We didn't remove it yet so that we can
convert all the boards to using this driver, before removing it entirely in a
separate patch.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-07-15 13:40:34 +02:00
Maxime Ripard ecfe64d8c5 power: reset: Add AT91 reset driver
Implement the reset behaviour of the various AT91 SoCS in drivers/power/reset.

It used to be (and still is) located in arch/arm/mach-at91, and in order to
preserve bisectability is not removed yet, but every board should be converted
to use this driver instead.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-07-15 13:40:33 +02:00
Maxime Ripard 6ca4f46005 power: reset: Add if statement instead of multiple depends on
All the config option so far are depending on the POWER_RESET symbol

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-07-15 13:40:32 +02:00
Linus Torvalds a727eaf64f ARM: SoC driver changes
SoC-near driver changes that we're merging through our tree. Mostly
 because they depend on other changes we have staged, but in some cases
 because the driver maintainers preferred that we did it this way.
 
 This contains a largeish cleanup series of the omap_l3_noc bus driver,
 cpuidle rework for Exynos, some reset driver conversions and a long
 branch of TI EDMA fixes and cleanups, with more to come next release.
 
 The TI EDMA cleanups is a shared branch with the dmaengine tree, with
 a handful of Davinci-specific fixes on top.
 
 After discussion at last year's KS (and some more on the mailing lists),
 we are here adding a drivers/soc directory. The purpose of this is
 to keep per-vendor shared code that's needed by different drivers but
 that doesn't fit into the MFD (nor drivers/platform) model. We expect
 to keep merging contents for this hierarchy through arm-soc so we can
 keep an eye on what the vendors keep adding here and not making it a
 free-for-all to shove in crazy stuff.
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Merge tag 'drivers-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next

Pull ARM SoC driver changes from Olof Johansson:
 "SoC-near driver changes that we're merging through our tree.  Mostly
  because they depend on other changes we have staged, but in some cases
  because the driver maintainers preferred that we did it this way.

  This contains a largeish cleanup series of the omap_l3_noc bus driver,
  cpuidle rework for Exynos, some reset driver conversions and a long
  branch of TI EDMA fixes and cleanups, with more to come next release.

  The TI EDMA cleanups is a shared branch with the dmaengine tree, with
  a handful of Davinci-specific fixes on top.

  After discussion at last year's KS (and some more on the mailing
  lists), we are here adding a drivers/soc directory.  The purpose of
  this is to keep per-vendor shared code that's needed by different
  drivers but that doesn't fit into the MFD (nor drivers/platform)
  model.  We expect to keep merging contents for this hierarchy through
  arm-soc so we can keep an eye on what the vendors keep adding here and
  not making it a free-for-all to shove in crazy stuff"

* tag 'drivers-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (101 commits)
  cpufreq: exynos: Fix driver compilation with ARCH_MULTIPLATFORM
  tty: serial: msm: Remove direct access to GSBI
  power: reset: keystone-reset: introduce keystone reset driver
  Documentation: dt: add bindings for keystone pll control controller
  Documentation: dt: add bindings for keystone reset driver
  soc: qcom: fix of_device_id table
  ARM: EXYNOS: Fix kernel panic when unplugging CPU1 on exynos
  ARM: EXYNOS: Move the driver to drivers/cpuidle directory
  ARM: EXYNOS: Cleanup all unneeded headers from cpuidle.c
  ARM: EXYNOS: Pass the AFTR callback to the platform_data
  ARM: EXYNOS: Move S5P_CHECK_SLEEP into pm.c
  ARM: EXYNOS: Move the power sequence call in the cpu_pm notifier
  ARM: EXYNOS: Move the AFTR state function into pm.c
  ARM: EXYNOS: Encapsulate the AFTR code into a function
  ARM: EXYNOS: Disable cpuidle for exynos5440
  ARM: EXYNOS: Encapsulate boot vector code into a function for cpuidle
  ARM: EXYNOS: Pass wakeup mask parameter to function for cpuidle
  ARM: EXYNOS: Remove ifdef for scu_enable in pm
  ARM: EXYNOS: Move scu_enable in the cpu_pm notifier
  ARM: EXYNOS: Use the cpu_pm notifier for pm
  ...
2014-06-02 16:35:49 -07:00
Linus Torvalds 825f4e0271 ARM: SoC updates for 3.16 (part 1)
A quite large set of SoC updates this cycle. In no particular order:
 
 - Multi-cluster power management for Samsung Exynos, adding support for
   big.LITTLE CPU switching on EXYNOS5
 - SMP support for Marvell Armada 375 and 38x
 - SMP rework on Allwinner A31
 - Xilinx Zynq support for SOC_BUS, big endian
 - Marvell orion5x platform cleanup, modernizing the implementation and
   moving to DT.
 - _Finally_ moving Samsung Exynos over to support MULTIPLATFORM, so
   that their platform can be enabled in the same kernel binary as most
   of the other v7 platforms in the tree. \o/ The work isn't quite complete,
   there's some driver fixes still needed, but the basics now work.
 
 New SoC support added:
 - Freescale i.MX6SX
 - LSI Axxia AXM55xx SoCs
 - Samsung EXYNOS 3250, 5260, 5410, 5420 and 5800
 - STi STIH407
 
 Plus a large set of various smaller updates for different platforms. I'm
 probably missing some important one here.
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Merge tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next

Pull part one of ARM SoC updates from Olof Johansson:
 "A quite large set of SoC updates this cycle.  In no particular order:

   - Multi-cluster power management for Samsung Exynos, adding support
     for big.LITTLE CPU switching on EXYNOS5

   - SMP support for Marvell Armada 375 and 38x

   - SMP rework on Allwinner A31

   - Xilinx Zynq support for SOC_BUS, big endian

   - Marvell orion5x platform cleanup, modernizing the implementation
     and moving to DT.

   - _Finally_ moving Samsung Exynos over to support MULTIPLATFORM, so
     that their platform can be enabled in the same kernel binary as
     most of the other v7 platforms in the tree.  \o/

     The work isn't quite complete, there's some driver fixes still
     needed, but the basics now work.

  New SoC support added:

   - Freescale i.MX6SX

   - LSI Axxia AXM55xx SoCs

   - Samsung EXYNOS 3250, 5260, 5410, 5420 and 5800

   - STi STIH407

  plus a large set of various smaller updates for different platforms.
  I'm probably missing some important one here"

* tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (281 commits)
  ARM: exynos: don't run exynos4 l2x0 setup on other platforms
  ARM: exynos: Fix "allmodconfig" build errors in mcpm and hotplug
  ARM: EXYNOS: mcpm rename the power_down_finish
  ARM: EXYNOS: Enable mcpm for dual-cluster exynos5800 SoC
  ARM: EXYNOS: Enable multi-platform build support
  ARM: EXYNOS: Consolidate Kconfig entries
  ARM: EXYNOS: Add support for EXYNOS5410 SoC
  ARM: EXYNOS: Support secondary CPU boot of Exynos3250
  ARM: EXYNOS: Add Exynos3250 SoC ID
  ARM: EXYNOS: Add 5800 SoC support
  ARM: EXYNOS: initial board support for exynos5260 SoC
  clk: exynos5410: register clocks using common clock framework
  ARM: debug: qcom: add UART addresses to Kconfig help for APQ8084
  ARM: sunxi: allow building without reset controller
  Documentation: devicetree: arm: sort enable-method entries
  ARM: rockchip: convert smp bringup to CPU_METHOD_OF_DECLARE
  clk: exynos5250: Add missing sysmmu clocks for DISP and ISP blocks
  ARM: dts: axxia: Add reset controller
  power: reset: Add Axxia system reset driver
  ARM: axxia: Adding defconfig for AXM55xx
  ...
2014-06-02 16:15:12 -07:00
Olof Johansson 535cee4227 Keystone Reset driver for 3.16
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Merge tag 'keystone-reset-driver' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into next/drivers

Merge "Keystone Reset driver for 3.16" from Santosh Shilimkar:

* tag 'keystone-reset-driver' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
  power: reset: keystone-reset: introduce keystone reset driver
  Documentation: dt: add bindings for keystone pll control controller
  Documentation: dt: add bindings for keystone reset driver

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-05-27 11:09:56 -07:00
Ivan Khoronzhuk a3e01e8022 power: reset: keystone-reset: introduce keystone reset driver
The keystone SoC can be rebooted in several ways. By external reset
pin, by soft and by watchdogs. To allow keystone SoC reset if
watchdog is triggered we have to enable it in reset mux configuration
register regarding of watchdog configuration. Also we need to set
soft/hard reset we are going to use.

So add keystone reset driver to handle all this stuff.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2014-05-27 09:46:40 -04:00
Arnd Bergmann b3d491e85d Allwinner drivers changes for 3.16, take 2
Add reset driver for the A31
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Merge tag 'sunxi-drivers-for-3.16-2' of https://github.com/mripard/linux into next/drivers

Allwinner drivers changes for 3.16, take 2

Add reset driver for the A31

* tag 'sunxi-drivers-for-3.16-2' of https://github.com/mripard/linux:
  power: reset: Add Allwinner A31 reset code

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-05-24 00:46:55 +02:00
Arnd Bergmann 650052b141 Merge branch 'axxia/soc' into next/soc
Patches from Anders Berg applied individually:

Here is version 4 of platform support for AXM5516 SoC.

The clk driver is now applied to clk-next. The rest should be ready for
arm-soc. Haven't got any response from the power/reset maintainers... I hope
this driver can be taken via arm-soc as well.

The AXM55xx family consists of devices that may contain up to 16 ARM Cortex-A15
cores (in a 4x4 cluster configuration). The cores within each cluster share an
L2 cache, and the clusters are connected to each other via a CCN-504 cache
coherent interconnect.

This machine requires CONFIG_ARM_LPAE enabled as all peripherals are located
above 4GB in the memory map.

* axxia/soc:
  ARM: dts: axxia: Add reset controller
  power: reset: Add Axxia system reset driver
  ARM: axxia: Adding defconfig for AXM55xx
  ARM: dts: Device tree for AXM55xx.
  ARM: Add platform support for LSI AXM55xx SoC

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-05-23 21:56:09 +02:00
Anders Berg 4a315e3457 power: reset: Add Axxia system reset driver
Add Axxia (AXM55xx) SoC system reset driver. This driver handles only system
reboot (and not power-off).

Signed-off-by: Anders Berg <anders.berg@lsi.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-05-23 18:18:45 +02:00
Maxime Ripard 1be7f5520a power: reset: Add Allwinner A31 reset code
That code used to be in the machine code, but it's more fit here with other
restart hooks.

That will allow to cleanup the machine directory, while waiting for a proper
watchdog driver for the A31.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2014-05-23 10:40:34 +02:00
Pawel Moll 3b9334ac83 mfd: vexpress: Convert custom func API to regmap
Components of the Versatile Express platform (configuration
microcontrollers on motherboard and daughterboards in particular)
talk to each other over a custom configuration bus. They
provide miscellaneous functions (from clock generator control
to energy sensors) which are represented as platform devices
(and Device Tree nodes). The transactions on the bus can
be generated by different "bridges" in the system, some
of which are universal for the whole platform (for the price
of high transfer latencies), others restricted to a subsystem
(but much faster).

Until now drivers for such functions were using custom "func"
API, which is being replaced in this patch by regmap calls.
This required:

* a rework (and move to drivers/bus directory, as suggested
  by Samuel and Arnd) of the config bus core, which is much
  simpler now and uses device model infrastructure (class)
  to keep track of the bridges; non-DT case (soon to be
  retired anyway) is simply covered by a special device
  registration function

* the new config-bus driver also takes over device population,
  so there is no need for special matching table for
  of_platform_populate nor "simple-bus" hack in the arm64
  model dtsi file (relevant bindings documentation has
  been updated); this allows all the vexpress devices
  fit into normal device model, making it possible
  to remove plenty of early inits and other hacks in
  the near future

* adaptation of the syscfg bridge implementation in the
  sysreg driver, again making it much simpler; there is
  a special case of the "energy" function spanning two
  registers, where they should be both defined in the tree
  now, but backward compatibility is maintained in the code

* modification of the relevant drivers:

  * hwmon - just a straight-forward API change
  * power/reset driver - API change
  * regulator - API change plus error handling
    simplification
  * osc clock driver - this one required larger rework
    in order to turn in into a standard platform driver

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mike Turquette <mturquette@linaro.org>
2014-05-15 17:02:18 +01:00
Pawel Moll d08b80373c power/reset: vexpress: Fix restart/power off operation
The restart/power off implementation in the vexpress driver
used to obtain the config function when necessary. This was
wrong in two respects:

1. It required memory allocation with disabled interrupts
(it worked, but lockdep - when enabled - reported warnings).

2. Used jiffies-based timeout, while jiffies are not running
at this stage of system shutdown (therefore a config
transaction error - if happened - would have never be reported).

Fixed by pre-allocating the config function per device
and using mdelay for timeout.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
2014-04-24 17:20:50 +01:00
Arnd Bergmann cda88c8be5 mvebu driver changes for v3.15 (incremental pull #2)
- reset
     - re-use qnap-poweroff driver for Synology NASs
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Merge tag 'mvebu-drivers-3.15-2' of git://git.infradead.org/linux-mvebu into next/drivers

Merge "mvebu drivers for v3.15" from Jason Cooper:

pull request #1:

 - mvebu mbus
    - use of_find_matching_node_and_match

 - rtc
    - use PTR_ERR_OR_ZERO in isl12057
    - work around issue in mv where date returned is 2038

 - kirkwood -> mach-mvebu
    - various Kconfig oneliners to allow building kirkwood in -mvebu/

pull request #2:

 - reset
    - re-use qnap-poweroff driver for Synology NASs

* tag 'mvebu-drivers-3.15-2' of git://git.infradead.org/linux-mvebu:
  Power: Reset: Generalize qnap-poweroff to work on Synology devices.
  drivers: Enable building of Kirkwood drivers for mach-mvebu
  rtc: mv: reset date if after year 2038
  rtc: isl12057: use PTR_ERR_OR_ZERO to fix coccinelle warnings
  bus: mvebu-mbus: make use of of_find_matching_node_and_match

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-03-17 11:14:34 +01:00
Andrew Lunn 200c0a3e40 Power: Reset: Generalize qnap-poweroff to work on Synology devices.
The Synology NAS devices use a very similar mechanism to QNAP NAS
devices to power off. Both send a single charactor command to a PIC,
over the second serial port. However the baud rate and the command
differ. Generalize the driver to support this.

Signed-off-by: Ben Peddell <klightspeed@killerwolves.net>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-03-04 03:48:41 +00:00
Kumar Gala d118966c58 power: reset: msm - switch Kconfig to ARCH_QCOM depends
We've split Qualcomm MSM support into legacy and multiplatform.  The reset
driver is only relevant on the multiplatform supported SoCs so switch the
Kconfig depends to ARCH_QCOM.

Acked-by: Dmitry Eremin-Solenikov
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2014-02-12 11:19:58 -06:00
Laxman Dewangan 56fb8de53e power: reset: Add as3722 power-off driver
ams AS3722 supports the power off functionality to turn off system.

This commit adds power off driver for ams AS3722.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-12-23 17:20:37 -08:00
Pawel Moll a2c0206ad6 vexpress-poweroff: Should depend on the required infrastructure
ARM Versatile Express reset driver requires platform-specific config
infrastructure to be present in the kernel. When VEXPRESS_CONFIG is not
selected, the build will fail like this:

drivers/built-in.o: In function `vexpress_reset_do.clone.0':
iio-trig-interrupt.c:(.text+0x1aff38): undefined reference to `__vexpress_config_func_get'
iio-trig-interrupt.c:(.text+0x1aff4c): undefined reference to `vexpress_config_write'

Added required dependency to the Kconfig entry.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-08-27 18:30:57 -07:00
Loc Ho 67778e0eda power: Add APM X-Gene system reboot driver
Add APM X-Gene SoC system reboot driver. This driver handles only system
reboot. System shutdown is board specific and can be handled by board
driver or GPIO based shutdown driver.

Signed-off-by: Loc Ho <lho@apm.com>
Signed-off-by: Feng Kan <fkan@apm.com>
Signed-off-by: Kumar Sankaran <ksankaran@apm.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-08-09 14:28:17 -07:00
Abhimanyu Kapur 78be3176c4 power: reset: Add msm restart support
Add support for restart and poweroff functionality present on MSM chipsets
with the MPM2 ps-hold hardware.

Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>
Tested-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-08-09 11:47:53 -07:00
Linus Torvalds 7d3107d26b Nothing exciting this time, just assorted fixes and cleanups.
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Merge tag 'for-v3.11' of git://git.infradead.org/battery-2.6

Pull battery subsystem update from Anton Vorontsov:
 "Nothing exciting this time, just assorted fixes and cleanups"

* tag 'for-v3.11' of git://git.infradead.org/battery-2.6: (25 commits)
  charger-manager: Fix regulator_get() return check
  charger-manager: Fix a bug when it unregisters notifier block of extcon
  tps65090-charger: Add dt node to power_supply
  sbs-battery: Add dt to power_supply struct
  power_supply: Add of_node_put to fix refcount
  power_supply: Move of_node out of the #ifdef CONFIG_OF
  power/reset: Make the vexpress driver optional on arm and arm64
  charger-manager: Add missing newlines, fix a couple of typos, add pr_fmt
  tps65090-charger: Fix AC detect
  MAINTAINERS: Update email address for Anton Vorontsov
  charger-manager: Ensure event is not used as format string
  power_supply: Replace strict_strtoul() with kstrtoul()
  generic-adc-battery: Fix checking if none of the channels are supported
  power: Use platform_{get,set}_drvdata()
  pm2301_charger: Return error if create_singlethread_workqueue fails
  pm2301_charger: Fix NULL pointer dereference
  lp8727_charger: Support the device tree feature
  twl4030_charger: Remove unnecessary platform_set_drvdata()
  rx51_battery: Remove unnecessary platform_set_drvdata()
  jz4740-battery: Remove unnecessary platform_set_drvdata()
  ...
2013-07-10 11:13:00 -07:00
Robin Holt 7b6d864b48 reboot: arm: change reboot_mode to use enum reboot_mode
Preparing to move the parsing of reboot= to generic kernel code forces
the change in reboot_mode handling to use the enum.

[akpm@linux-foundation.org: fix arch/arm/mach-socfpga/socfpga.c]
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Russ Anderson <rja@sgi.com>
Cc: Robin Holt <holt@sgi.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-09 10:33:29 -07:00
Pawel Moll b52eafcd79 power/reset: Make the vexpress driver optional on arm and arm64
The driver can be used on either arm or arm64 platforms, but
the latter doesn't have any platform-specific configuration
options, so it must be possible to manually enable the driver.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-06-21 17:33:30 -07:00
Catalin Marinas 65deb78285 arm: vexpress: Decouple vexpress-poweroff implementation from machine_desc
This patch adds the pm_power_off and arm_pm_restart variable settings to
the vexpress-poweroff.c driver to decouple it from the machine_desc
definition.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>
2013-03-21 15:17:40 +00:00
Catalin Marinas 2655f51d0a arm: vexpress: Move the poweroff/restart code to drivers/power/reset
This patch moves the arch/arm/mach-vexpress/reset.c functionality to
drivers/platform/reset/ and adds the necessary Kconfig wiring.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>
2013-03-21 15:17:39 +00:00
Linus Torvalds 5a1203914a - Four new drivers:
o goldfish_battery:
     This is Android Emulator battery driver. Originally from Google, but
     Intel folks reshaped it for mainline;
 
   o pm2301_charger:
     A new driver for ST-Ericsson 2301 Power Management chip, uses AB8500
     battery management core;
 
   o qnap-poweroff:
     The driver adds poweroff functionality for QNAP NAS boxes;
 
   o restart-poweroff:
     A generic driver that implements 'power off by restarting'. The actual
     poweroff functionality is implemented through a bootloader, so Linux'
     task is just to restart the box. The driver is useful on Buffalo
     Linkstation LS-XHL and LS-CHLv2 boards. Andrew Lunn worked on
     submitting the driver (as well as qnap-poweroff above).
 
 - A lot of fixes for ab8500 drivers. This is a part of efforts of syncing
   internal ST-Ericsson development tree with the mainline. Lee Jones @
   Linaro worked on compilation and reshaping these series;
 
 - New health properties for the power supplies: "Watchdog timer expire"
   and "Safety timer expire";
 
 - As usual, a bunch of fixes/cleanups here and there.
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Merge tag 'for-v3.9' of git://git.infradead.org/battery-2.6

Pull battery updates from Anton Vorontsov:
 "Four new drivers:

   - goldfish_battery:

     This is Android Emulator battery driver.  Originally from Google,
     but Intel folks reshaped it for mainline

   - pm2301_charger:

     A new driver for ST-Ericsson 2301 Power Management chip, uses
     AB8500 battery management core

   - qnap-poweroff:

     The driver adds poweroff functionality for QNAP NAS boxes

   - restart-poweroff:

     A generic driver that implements 'power off by restarting'.  The
     actual poweroff functionality is implemented through a bootloader,
     so Linux' task is just to restart the box.  The driver is useful on
     Buffalo Linkstation LS-XHL and LS-CHLv2 boards.  Andrew Lunn worked
     on submitting the driver (as well as qnap-poweroff above).

  Additionally:

   - A lot of fixes for ab8500 drivers.  This is a part of efforts of
     syncing internal ST-Ericsson development tree with the mainline.
     Lee Jones @ Linaro worked on compilation and reshaping these
     series.

   - New health properties for the power supplies: "Watchdog timer
     expire" and "Safety timer expire"

   - As usual, a bunch of fixes/cleanups here and there"

* tag 'for-v3.9' of git://git.infradead.org/battery-2.6: (81 commits)
  bq2415x_charger: Add support for offline and 100mA mode
  generic-adc-battery: Fix forever loop in gab_remove()
  goldfish_battery: Add missing GENERIC_HARDIRQS dependency
  da9030_battery: Include notifier.h
  bq27x00_battery: Fix reporting battery temperature
  power/reset: Remove newly introduced __dev* annotations
  lp8727_charger: Small cleanup in naming
  ab8500_btemp: Demote initcall sequence
  ds2782_battery: Add power_supply_changed() calls for proper uevent support
  power: Add battery driver for goldfish emulator
  u8500-charger: Delay for USB enumeration
  ab8500-bm: Remove individual [charger|btemp|fg|chargalg] pdata structures
  ab8500-charger: Do not touch VBUSOVV bits
  ab8500-fg: Use correct battery charge full design
  pm2301: LPN mode control support
  pm2301: Enable vbat low monitoring
  ab8500-bm: Flush all work queues before suspending
  ab8500-fg: Go to INIT_RECOVERY when charger removed
  ab8500-charger: Add support for autopower on AB8505 and AB9540
  abx500-chargalg: Add new sysfs interface to get current charge status
  ...

Fix up fairly straightforward conflicts in the ab8500 driver.  But since
it seems to be ARM-specific, I can't even compile-test the result..
2013-02-20 10:19:07 -08:00
Thierry Reding 60a1c4d41b power/reset: Remove newly introduced __dev* annotations
__devinit, __devexit and __devexit_p have recently been removed and
should no longer be used.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-02-02 19:41:29 -08:00
Andrew Lunn 8fd526fd18 qnap-poweroff: Fix license string
GPLv2+ is not a valid license string. Replace it with one that is.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-01-19 18:04:04 -08:00
Linus Torvalds 974b33586b ARM: arm-soc fixes for 3.8-rc
People are back from the holiday breaks, and it shows. Here are a bunch of
 fixes for a number of platforms:
  - A couple of small fixes for Nomadik
  - A larger set of changes for kirkwood/mvebu
    - uart driver selection, dt clocks, gpio-poweroff fixups,
      a few __init annotation fixes and some error handling improvement
      in their xor dma driver.
  - i.MX had a couple of minor fixes (and a critical one for flexcan2
    clock setup)
  - MXS has a small board fix and a framebuffer bugfix
  - A set of fixes for Samsung Exynos, fixing default bootargs and some
    Exynos5440 clock issues
  - A set of OMAP changes including PM fixes and a few sparse warning
    fixups
 
 All in all a bit more positive code delta than we'd ideally want to see
 here, mostly from the OMAP PM changes, but nothing overly crazy.
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Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "People are back from the holiday breaks, and it shows.  Here are a
  bunch of fixes for a number of platforms:
   - A couple of small fixes for Nomadik
   - A larger set of changes for kirkwood/mvebu
     - uart driver selection, dt clocks, gpio-poweroff fixups, a few
       __init annotation fixes and some error handling improvement in
       their xor dma driver.
   - i.MX had a couple of minor fixes (and a critical one for flexcan2
     clock setup)
   - MXS has a small board fix and a framebuffer bugfix
   - A set of fixes for Samsung Exynos, fixing default bootargs and some
     Exynos5440 clock issues
   - A set of OMAP changes including PM fixes and a few sparse warning
     fixups

  All in all a bit more positive code delta than we'd ideally want to
  see here, mostly from the OMAP PM changes, but nothing overly crazy."

* tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (44 commits)
  ARM: clps711x: Fix bad merge of clockevents setup
  ARM: highbank: save and restore L2 cache and GIC on suspend
  ARM: highbank: add a power request clear
  ARM: highbank: fix secondary boot and hotplug
  ARM: highbank: fix typos with hignbank in power request functions
  ARM: dts: fix highbank cpu mpidr values
  ARM: dts: add device_type prop to cpu nodes on Calxeda platforms
  ARM: mx5: Fix MX53 flexcan2 clock
  ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array
  pinctrl: mvebu: make pdma clock on dove mandatory
  ARM: Dove: Add pinctrl clock to DT
  dma: mv_xor: fix error handling for clocks
  dma: mv_xor: fix error handling of mv_xor_channel_add()
  arm: mvebu: Add missing ; for cpu node.
  arm: mvebu: Armada XP MV78230 has only three Ethernet interfaces
  arm: mvebu: Armada XP MV78230 has two cores, not one
  clk: mvebu: Remove inappropriate __init tagging
  ARM: Kirkwood: Use fixed-regulator instead of board gpio call
  ARM: Kirkwood: Fix missing sdio clock
  ARM: Kirkwood: Switch TWSI1 of 88f6282 to DT clock providers
  ...
2013-01-08 18:53:56 -08:00
Andrew Lunn ffd8f9a727 power/reset: Add a new driver implementing 'power off by restarting'
Some devices, Buffalo Linkstation LS-XHL and LS-CHLv2 for example,
power-off by restarting to letting u-boot hold the SoC until the user
presses a key. Add a generic driver to implement this. It binds a function
to pm_power_off, which calls arm_pm_restart.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Michael Walle <michael@walle.cc>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-01-06 14:00:31 -08:00
Andrew Lunn e8fc721a9a power/reset: Add a new driver to turn QNAP board power off
The QNAP NAS boxes have a microcontroller attached to the SoCs second
serial port. By sending it a simple command, it will turn the power for
the board off. This driver registers a function for pm_power_off to send
such a command.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-01-06 14:00:23 -08:00
Andrew Lunn 5343527bbf Power: gpio-poweroff: Fix documentation and gpio_is_valid
Improve the documentation to clarify level vs edge triggered power off.
Improve the comments for level vs edge triggered power off.
Make use of gpio_is_valid().

Reported-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-01-06 17:53:00 +00:00
Greg Kroah-Hartman 6d2cea4fca Drivers: power: remove __dev* attributes.
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, __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>
Cc: Anton Vorontsov <cbou@mail.ru>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Jamie Lentin <jm@lentin.co.uk>
Cc: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:14 -08:00
Jamie Lentin 96ff0f5c7e power: Add simple poweroff-gpio driver
Given appropriate devicetree bindings, this driver registers a
pm_power_off function to set a GPIO line high/low to power down
your board.

Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by:Simon Baatz <gmbnomis@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2012-11-24 02:56:38 +00:00