cascardo/linux.git
10 years agopinctrl: set unit for debounce time pinconfig to usec
Heiko Stübner [Tue, 25 Jun 2013 12:56:11 +0000 (14:56 +0200)]
pinctrl: set unit for debounce time pinconfig to usec

Currently the debounce time pinconfig option uses an unspecified
"time units" unit. As pinconfig options should use SI units and a
real unit is also necessary for generic dt bindings, change it
to usec. Currently no driver is using the generic pinconfig option
for this, so the unit change is safe to do.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: more clarifications for generic pull configs
Heiko Stübner [Tue, 25 Jun 2013 12:55:42 +0000 (14:55 +0200)]
pinctrl: more clarifications for generic pull configs

PULL_PIN_DEFAULT is meant for hardware completely hiding any pull
settings from the driver, so that it's really only possible to turn
the pull on or off, but it not being possible to determine any
pull settings from software.

Also the binding-documentation for the pull arguments did not match
the changes to the expected values.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: rip out the direct pinconf API
Linus Walleij [Mon, 24 Jun 2013 13:06:19 +0000 (15:06 +0200)]
pinctrl: rip out the direct pinconf API

From the inception ot the pin config API there has been the
possibility to get a handle at a pin directly and configure
its electrical characteristics. For this reason we had:

int pin_config_get(const char *dev_name, const char *name,
               unsigned long *config);
int pin_config_set(const char *dev_name, const char *name,
               unsigned long config);
int pin_config_group_get(const char *dev_name,
               const char *pin_group,
               unsigned long *config);
int pin_config_group_set(const char *dev_name,
               const char *pin_group,
               unsigned long config);

After the introduction of the pin control states that will
control pins associated with devices, and its subsequent
introduction to the device core, as well as the
introduction of pin control hogs that can set up states on
boot and optionally also at sleep, this direct pin control
API is a thing of the past.

As could be expected, it has zero in-kernel users.
Let's delete this API and make our world simpler.

Reported-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl-tz1090-pdc: add TZ1090 PDC pinctrl driver
James Hogan [Thu, 20 Jun 2013 09:26:29 +0000 (10:26 +0100)]
pinctrl-tz1090-pdc: add TZ1090 PDC pinctrl driver

Add a pin control driver for the TZ1090's low power pins via the
powerdown controller SOC_GPIO_CONTROL registers.

These pins have individually controlled pull-up, and group controlled
schmitt, slew-rate, drive-strength, and power-on-start (pos).

The pdc_gpio0 and pdc_gpio1 pins can also be muxed onto the
ir_mod_stable_out and ir_mod_power_out functions respectively. If no
function is set they remain in GPIO mode. These muxes can be overridden
by requesting them as GPIOs.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-doc@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl-tz1090: add TZ1090 pinctrl driver
James Hogan [Thu, 20 Jun 2013 09:26:27 +0000 (10:26 +0100)]
pinctrl-tz1090: add TZ1090 pinctrl driver

Add a pin control driver for the main pins on the TZ1090 SoC. This
doesn't include the low-power pins as they're controlled separately via
the Powerdown Controller (PDC) registers.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-doc@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: samsung: Staticize drvdata_list
Sachin Kamat [Mon, 24 Jun 2013 11:20:21 +0000 (16:50 +0530)]
pinctrl: samsung: Staticize drvdata_list

'drvdata_list' is used only in this file. Make it static.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: rockchip: Add missing irq_gc_unlock() call before return error
Axel Lin [Sun, 23 Jun 2013 00:48:34 +0000 (08:48 +0800)]
pinctrl: rockchip: Add missing irq_gc_unlock() call before return error

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: abx500: rework error path
Patrice Chotard [Mon, 24 Jun 2013 12:41:46 +0000 (14:41 +0200)]
pinctrl: abx500: rework error path

At several places, return value was not tested
and error output was missing.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: abx500: suppress hardcoded value
Patrice Chotard [Mon, 24 Jun 2013 12:41:45 +0000 (14:41 +0200)]
pinctrl: abx500: suppress hardcoded value

Replace hardcoded value by corresponding #define's.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: abx500: factorize code
Patrice Chotard [Thu, 20 Jun 2013 14:05:44 +0000 (16:05 +0200)]
pinctrl: abx500: factorize code

Factorize code by adding abx500_pullud_supported()
which improve code readability.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: abx500: fix abx500_gpio_get()
Patrice Chotard [Thu, 20 Jun 2013 14:05:43 +0000 (16:05 +0200)]
pinctrl: abx500: fix abx500_gpio_get()

- allow to get output GPIO value
- as there is no GPIO0 on ABX500, use correct offset with
  abx500_gpio_get_bit()

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: abx500: fix abx500_pin_config_set()
Patrice Chotard [Thu, 20 Jun 2013 14:05:00 +0000 (16:05 +0200)]
pinctrl: abx500: fix abx500_pin_config_set()

- Update abx500_pin_config_set() in order to take in
account PIN_CONFIG_BIAS_DISABLE state to disable
pull up or pull down.

- Rework error path.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agopinctrl: abx500: Add device tree support
Patrice Chotard [Thu, 20 Jun 2013 14:04:59 +0000 (16:04 +0200)]
pinctrl: abx500: Add device tree support

We use the same way to define pin muxing and pin configuration
than for nomadik. So pickup code from pinctrl_nomadik.c to be
able to implement pin multiplexing and pin configuration using
the device tree. Pin configuration uses generic parsing code.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
10 years agosh-pfc: Guard DT parsing with #ifdef CONFIG_OF
Laurent Pinchart [Wed, 19 Jun 2013 11:26:02 +0000 (13:26 +0200)]
sh-pfc: Guard DT parsing with #ifdef CONFIG_OF

Fix a compilation error caused by pinconf_generic_parse_dt_config() not
being defined on !CONFIG_OF platforms by guarding the whole DT node
parsing code with #ifdef CONFIG_OF.

Defining a pinconf_generic_parse_dt_config() on !CONFIG_OF would have
been possible as well, but would have resulted in a larger code size on
!CONFIG_OF platforms (such as arch/sh).

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: add Intel BayTrail GPIO/pinctrl support
Mathias Nyman [Tue, 18 Jun 2013 11:33:02 +0000 (14:33 +0300)]
pinctrl: add Intel BayTrail GPIO/pinctrl support

Add support for gpio on Intel BayTrail platforms. BayTrail supports 3 banks
of gpios called SCORE, NCORE ans SUS with 102, 28 and 44 gpio pins.
Supports gpio interrupts and ACPI gpio events

Pins may be muxed to alternate function instead of gpio by firmware.
This driver does not touch the pin muxing and expect firmare
to set pin muxing and pullup/down properties properly.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: fix pinconf_ops::pin_config_dbg_parse_modify kerneldoc
James Hogan [Tue, 18 Jun 2013 09:49:33 +0000 (10:49 +0100)]
pinctrl: fix pinconf_ops::pin_config_dbg_parse_modify kerneldoc

The kerneldoc comment for struct pinconf_ops was missing
pin_config_dbg_parse_modify, and instead described
pin_config_group_dbg_set (which is presumably an old name for the same
function). Rename it in the kerneldoc comment so they match.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: Staticize local symbols
Sachin Kamat [Tue, 18 Jun 2013 09:04:27 +0000 (14:34 +0530)]
pinctrl: Staticize local symbols

Symbols referenced only in this file are made static.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: spear/plgpio: Staticize spear310_o2p
Sachin Kamat [Tue, 18 Jun 2013 09:04:26 +0000 (14:34 +0530)]
pinctrl: spear/plgpio: Staticize spear310_o2p

'spear310_o2p' is referenced only in this file.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: nomadik: Staticize local symbols
Sachin Kamat [Tue, 18 Jun 2013 09:04:25 +0000 (14:34 +0530)]
pinctrl: nomadik: Staticize local symbols

Some symbols referenced only in this file are made static.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: bcm2835: Staticize bcm2835_gpio_pins
Sachin Kamat [Tue, 18 Jun 2013 09:04:24 +0000 (14:34 +0530)]
pinctrl: bcm2835: Staticize bcm2835_gpio_pins

'bcm2835_gpio_pins' is used only in this file.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agosh-pfc: Add pinconf support to DT bindings
Laurent Pinchart [Mon, 17 Jun 2013 18:50:03 +0000 (20:50 +0200)]
sh-pfc: Add pinconf support to DT bindings

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agosh-pfc: Add DT support
Laurent Pinchart [Mon, 17 Jun 2013 18:50:02 +0000 (20:50 +0200)]
sh-pfc: Add DT support

Support device instantiation through the device tree. The compatible
property is used to select the SoC pinmux information.

Set the gpio_chip device field to the PFC device to enable automatic
GPIO OF support.

Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agosh-pfc: Remove support for platform data
Laurent Pinchart [Mon, 17 Jun 2013 18:50:01 +0000 (20:50 +0200)]
sh-pfc: Remove support for platform data

Platform data isn't used, support can thus be removed.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: core: fix missing unlock on error in pinctrl_find_gpio_range_from_pin()
Wei Yongjun [Tue, 18 Jun 2013 04:24:58 +0000 (12:24 +0800)]
pinctrl: core: fix missing unlock on error in pinctrl_find_gpio_range_from_pin()

Add the missing unlock before return from function pinctrl_find_gpio_range_from_pin()
in the error handling case.

Introduced by commit 2ff3477efd7086544b9e298fc63afab0645921b4.
(pinctrl: add pin list based GPIO ranges)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: exynos: ack level-triggered interrupts before unmasking
Doug Anderson [Mon, 17 Jun 2013 16:50:43 +0000 (09:50 -0700)]
pinctrl: exynos: ack level-triggered interrupts before unmasking

A level-triggered interrupt should be acked after the interrupt line
becomes inactive and before it is unmasked, or else another interrupt
will be immediately triggered.  Acking before or after calling the
handler is not enough.

Signed-off-by: Luigi Semenzato <semenzato@chromium.org>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agoMAINTAINERS: Add Samsung pinctrl entries
Doug Anderson [Sun, 16 Jun 2013 22:17:46 +0000 (15:17 -0700)]
MAINTAINERS: Add Samsung pinctrl entries

It's convenient if get_maintainer suggests sending samsung/exynos
pinctrl changes to linux-samsung-soc and to Tomasz and Thomas.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: export pinctrl_pm_select_*_state
Arnd Bergmann [Mon, 17 Jun 2013 15:12:28 +0000 (17:12 +0200)]
pinctrl: export pinctrl_pm_select_*_state

The three functions pinctrl_pm_select_default_state,
pinctrl_pm_select_sleep_state, and pinctrl_pm_select_idle_state
are used in drivers that can be loadable modules, and should
be exported.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: rockchip: correctly handle arguments of pinconf options
Heiko Stübner [Sun, 16 Jun 2013 15:41:16 +0000 (17:41 +0200)]
pinctrl: rockchip: correctly handle arguments of pinconf options

Change the rockchip pinctrl driver to handle the arguments to the pull
pinconfig options correctly. So only accept non-0 values for the
pull options as the rockchip pin-controller can only turn pulls on and
off (this via BIAS_DISABLE).

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: single: adopt pinctrl sleep mode management
Hebbar Gururaja [Fri, 31 May 2013 10:13:01 +0000 (15:43 +0530)]
pinctrl: single: adopt pinctrl sleep mode management

Make pinctrl-single able to handle suspend/resume events and change
hogged pins states accordingly.

Signed-off-by: Hebbar Gururaja <gururaja.hebbar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agospi: pl022: remove unused ret and pins_state variables
Fabio Baltieri [Mon, 17 Jun 2013 10:08:15 +0000 (12:08 +0200)]
spi: pl022: remove unused ret and pins_state variables

Removes the warnings:

drivers/spi/spi-pl022.c: In function 'pl022_suspend_resources':
drivers/spi/spi-pl022.c:2322:24: warning: unused variable 'pins_state' [-Wunused-variable]
drivers/spi/spi-pl022.c:2321:6: warning: unused variable 'ret' [-Wunused-variable]
drivers/spi/spi-pl022.c: In function 'pl022_resume_resources':
drivers/spi/spi-pl022.c:2334:6: warning: unused variable 'ret' [-Wunused-variable]

introduced in:

f1c9cf0 spi: pl022: use pinctrl PM helpers

Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Acked-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: sunxi: Add Allwinner A10s pins
Maxime Ripard [Sun, 9 Jun 2013 16:36:04 +0000 (18:36 +0200)]
pinctrl: sunxi: Add Allwinner A10s pins

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: sunxi: Move the pins definitions to a separate header
Maxime Ripard [Sun, 9 Jun 2013 16:36:03 +0000 (18:36 +0200)]
pinctrl: sunxi: Move the pins definitions to a separate header

It will allow us to have a cleaner separation between the data needed by
the driver to work, and the core logic of the driver in itself, and will
allow having too much noise in the core driver in the future.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: establish pull-up/pull-down terminology
Linus Walleij [Sun, 16 Jun 2013 10:43:06 +0000 (12:43 +0200)]
pinctrl: establish pull-up/pull-down terminology

It is counter-intuitive to have "0" mean disable in a boolean
manner for electronic properties of pins such as pull-up and
pull-down. Therefore, define that a pull-up/pull-down argument
of 0 to such a generic option means that the pin is
short-circuited to VDD or GROUND. Pull disablement shall be
done using PIN_CONFIG_BIAS_DISABLE.

Cc: James Hogan <james.hogan@imgtec.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by Heiko Stuebner <heiko@sntech.de>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: dynamically alloc temp array when parsing dt pinconf options
Heiko Stübner [Fri, 14 Jun 2013 15:43:55 +0000 (17:43 +0200)]
pinctrl: dynamically alloc temp array when parsing dt pinconf options

Allocating the temorary array in pinconf_generic_parse_dt_config on stack
might cause problems later on, when the number of options grows over time.
Therefore also allocate this array dynamically to be on the safe side.

Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: handle zero found dt pinconfig properties better
Heiko Stübner [Fri, 14 Jun 2013 15:43:21 +0000 (17:43 +0200)]
pinctrl: handle zero found dt pinconfig properties better

This adds a shortcut when no valid pinconf properties are found
in the parsed dt node, to set the values immediately and return.

Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: clarify some dt pinconfig options
Heiko Stübner [Fri, 14 Jun 2013 15:42:49 +0000 (17:42 +0200)]
pinctrl: clarify some dt pinconfig options

The bias-pull-* options use values > 0 to indicate that the pull should
be activated and optionally also indicate the strength of the pull.
Therefore use an default value of 1 for these options.

Split the low-power-mode option into low-power-enable and -disable.

Update the documentation to describe the param arguments better.

Reported-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agoFix comment on pinctrl_gpio_range.pin_base
Christian Ruppert [Fri, 14 Jun 2013 08:24:48 +0000 (10:24 +0200)]
Fix comment on pinctrl_gpio_range.pin_base

The comment introduced with the recently added pinctrl_gpio_range.pins
element was wrong. This corrects it.
Thanks to Patrice Chotard for pointing this out.

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: update GPIO range doc
Linus Walleij [Sun, 16 Jun 2013 10:15:36 +0000 (12:15 +0200)]
pinctrl: update GPIO range doc

This updates the GPIO range documentation with the API changes
for sparse/random/arbitrary pin-to-GPIO mappings.

Reviewed-by: Christian Ruppert <christian.ruppert@abilis.com>
Acked-by: Rob Landley <rob@landley.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: move the pm state stubs
Linus Walleij [Thu, 13 Jun 2013 20:27:59 +0000 (22:27 +0200)]
pinctrl: move the pm state stubs

The stubs for the !PINCTRL case were placed in the wrong
part of the file, causing breakage in linux-next when compiling
SH without pinctrl. Fix it up by moving the stubs to the right
place.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: add pin list based GPIO ranges
Christian Ruppert [Thu, 13 Jun 2013 12:55:31 +0000 (14:55 +0200)]
pinctrl: add pin list based GPIO ranges

Traditionally, GPIO ranges are based on consecutive ranges of both GPIO
and pin numbers. This patch allows for GPIO ranges with arbitrary lists
of pin numbers.

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: exynos: reorder xyz_irq_unmask() so future patch can ack
Doug Anderson [Wed, 12 Jun 2013 17:33:18 +0000 (10:33 -0700)]
pinctrl: exynos: reorder xyz_irq_unmask() so future patch can ack

This patch does nothing but reorder the functions to improve the
readability of a future patch.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: exynos: Add spinlocks to irq_mask and irq_unmask
Doug Anderson [Wed, 12 Jun 2013 17:33:17 +0000 (10:33 -0700)]
pinctrl: exynos: Add spinlocks to irq_mask and irq_unmask

The patch:
  1984695 pinctrl: samsung: Protect bank registers with a spinlock

...added spinlocks to protect many accesses.  However, the irq_mask
and irq_unmask functions still do an unprotected read/modify/write.
Add the spinlock there.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: abx500: fix build warning
Patrice Chotard [Tue, 11 Jun 2013 08:48:21 +0000 (10:48 +0200)]
pinctrl: abx500: fix build warning

pinctrl-abx500.c: In function 'abx500_gpio_dbg_show_one':
pinctrl-abx500.c:534:14: warning: 'pud' may be used
uninitialized in this function [-Wuninitialized]

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: add pinctrl driver for Rockchip SoCs
Heiko Stübner [Mon, 10 Jun 2013 20:16:22 +0000 (22:16 +0200)]
pinctrl: add pinctrl driver for Rockchip SoCs

This driver adds support the Cortex-A9 based SoCs from Rockchip,
so at least the RK2928, RK3066 (a and b) and RK3188.
Earlier Rockchip SoCs seem to use similar mechanics for gpio
handling so should be supportable with relative small changes.
Pull handling on the rk3188 is currently a stub, due to it being
a bit different to the earlier SoCs.

Pinmuxing as well as gpio (and interrupt-) handling tested on
a rk3066a based machine.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: add function to parse generic pinconfig properties from a dt node
Heiko Stübner [Mon, 10 Jun 2013 19:40:29 +0000 (21:40 +0200)]
pinctrl: add function to parse generic pinconfig properties from a dt node

pinconf_generic_parse_dt_config() takes a node as input and generates an
array of generic pinconfig values from the properties of this node.

As I couldn't find a mechanism to count the number of properties of a node
the function uses internally an array to accept one of parameter and copies
the real present options to a smaller variable at its end.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agodrivers: net: davinci_mdio: use pinctrl PM helpers
Mugunthan V N [Thu, 6 Jun 2013 18:15:15 +0000 (23:45 +0530)]
drivers: net: davinci_mdio: use pinctrl PM helpers

This utilize the new pinctrl core PM helpers to transition
the driver to "default" and "sleep" states.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agodrivers: net: cpsw: use pinctrl PM helpers
Mugunthan V N [Thu, 6 Jun 2013 18:15:14 +0000 (23:45 +0530)]
drivers: net: cpsw: use pinctrl PM helpers

This utilize the new pinctrl core PM helpers to transition
the driver to "default" and "sleep" states.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agospi: pl022: use pinctrl PM helpers
Linus Walleij [Mon, 10 Jun 2013 14:57:09 +0000 (16:57 +0200)]
spi: pl022: use pinctrl PM helpers

This utilize the new pinctrl core PM helpers to transition
the driver to "sleep" and "idle" states, cutting away some
boilerplate code.

Cc: Hebbar Gururaja <gururaja.hebbar@ti.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: sunxi: Add external interrupt functions
Maxime Ripard [Sat, 8 Jun 2013 10:05:45 +0000 (12:05 +0200)]
pinctrl: sunxi: Add external interrupt functions

The A10 and A13 has a few pins that can be muxed into a particular
function that can be used as an interrupt source. Add the available
pins for such functions to the A10 and A13 description array.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: sunxi: Add external interrupts support
Maxime Ripard [Sat, 8 Jun 2013 10:05:44 +0000 (12:05 +0200)]
pinctrl: sunxi: Add external interrupts support

The port controller IP found in the Allwinner A10 and A13 can use few of
the pins it manage as an interrupt source, called external interrupts in
the datasheet.

The number of these external interrupts are SoCs specific, but the
current upper limit is 32. In order to work, the external interrupts'
pins have to be muxed to a specific function to generate an interrupt.

This patch adds the irqchip and the needed logic to use the PIO
controller as an interrupt controller.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: sunxi: Search the description array by pin id
Maxime Ripard [Sat, 8 Jun 2013 10:05:43 +0000 (12:05 +0200)]
pinctrl: sunxi: Search the description array by pin id

Avoid to use expensive string manipulation functions and search by pin
id when possible.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: exynos5440: fix issues reported by prevent tool
Thomas Abraham [Thu, 6 Jun 2013 01:22:03 +0000 (10:22 +0900)]
pinctrl: exynos5440: fix issues reported by prevent tool

This patch fixes issues reported by prevent tool.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
[Drop hunk already in-tree from a patch by Wei Yongjun]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: pinctrl-single: pin names for pinctrl-single.bits
Manjunathappa, Prakash [Tue, 21 May 2013 14:08:01 +0000 (19:38 +0530)]
pinctrl: pinctrl-single: pin names for pinctrl-single.bits

Take care to name pin names as
register-offset.bit-pos-of-pin-in-register in case configuring multiple
pins in register.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: pinctrl-single: enhance to configure multiple pins of different modules
Manjunathappa, Prakash [Tue, 21 May 2013 14:08:00 +0000 (19:38 +0530)]
pinctrl: pinctrl-single: enhance to configure multiple pins of different modules

Add support to configure multiple pins in each register, existing
implementation added by [1] does not support full fledge multiple pin
configuration in single register, reports a pin clash when different
modules configure different bits of same register. The issue reported
and discussed here
http://www.spinics.net/lists/arm-kernel/msg235213.html

With pinctrl-single,bits-per-mux property specified, use function-mask
property to find out number pins to configure. Allocate and register
pin control functions based sub mask.

Tested on da850/omap-l138 EVM.
does not support variable submask for pins.
does not support pinconf.

[1] "pinctrl: pinctrl-single: Add pinctrl-single,bits type of mux"
(9e605cb68a21d5704839a192a46ebcf387773704),

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Reported-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agoi2c: nomadik: use pinctrl PM helpers
Linus Walleij [Wed, 5 Jun 2013 13:38:02 +0000 (15:38 +0200)]
i2c: nomadik: use pinctrl PM helpers

This utilize the new pinctrl core PM helpers to transition
the driver to "sleep" and "idle" states, cutting away some
boilerplate code.

Cc: Hebbar Gururaja <gururaja.hebbar@ti.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agotty: serial: modify PL011 driver to use pinctrl PM helpers
Linus Walleij [Wed, 5 Jun 2013 13:36:42 +0000 (15:36 +0200)]
tty: serial: modify PL011 driver to use pinctrl PM helpers

This augments the PL011 UART driver to utilize the new pinctrl
core PM helpers to transition the driver to default and sleep
states, cutting away some boilerplate code.

Cc: Hebbar Gururaja <gururaja.hebbar@ti.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agodrivers: pinctrl sleep and idle states in the core
Linus Walleij [Wed, 5 Jun 2013 13:30:33 +0000 (15:30 +0200)]
drivers: pinctrl sleep and idle states in the core

If a device have sleep and idle states in addition to the
default state, look up these in the core and stash them in
the pinctrl state container.

Add accessor functions for pinctrl consumers to put the pins
into "default", "sleep" and "idle" states passing nothing but
the struct device * affected.

Solution suggested by Kevin Hilman, Mark Brown and Dmitry
Torokhov in response to a patch series from Hebbar
Gururaja.

Cc: Hebbar Gururaja <gururaja.hebbar@ti.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: add pinconf-generic define for a pin-default pull
Heiko Stübner [Thu, 6 Jun 2013 14:44:25 +0000 (16:44 +0200)]
pinctrl: add pinconf-generic define for a pin-default pull

There exist controllers that don't support to set the pull to up or down
separately but instead automatically set the pull direction based on
embedded knowledge inside the controller, for example depending on the
selected mux function of the pin.

Therefore this patch adds another config option to use this default
pull-state for a pin where it is not possible to know or decide if the
pin will be pulled up or down.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: add VF610 pinctrl driver
Jingchang Lu [Tue, 28 May 2013 09:32:08 +0000 (17:32 +0800)]
pinctrl: add VF610 pinctrl driver

Adds Freescale Vybrid VF610 pin controller
driver to IMX common pinctrl driver framework.

Signed-off-by: Jingchang Lu <b35083@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: imx: add VF610 support to imx pinctrl framework
Jingchang Lu [Tue, 28 May 2013 09:32:07 +0000 (17:32 +0800)]
pinctrl: imx: add VF610 support to imx pinctrl framework

On some platforms such as VF610, offset of mux and pad ctrl register
may be zero, and the mux_mode and config_val are in one 32-bit register.
This patch adds support to imx core pinctrl framework to handle these
cases.

Signed-off-by: Jingchang Lu <b35083@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agoDocumentation/pinctrl.txt: fix typo "with with"
James Hogan [Tue, 28 May 2013 09:31:48 +0000 (10:31 +0100)]
Documentation/pinctrl.txt: fix typo "with with"

Fix typo in "communicate directly with with the pinctrl subsystem".

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Rob Landley <rob@landley.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: abx500: fix abx500_gpio_dbg_show_one() to show pull up/down
Patrice Chotard [Fri, 24 May 2013 12:06:31 +0000 (14:06 +0200)]
pinctrl: abx500: fix abx500_gpio_dbg_show_one() to show pull up/down

- rework abx500_gpio_dbg_show_one() to take in account pull up/down
  feature available on AB8540 only.
- add abx500_get_pull_updown() needed by abx500_gpio_dbg_show_one()
- rename abx500_config_pull_updown() to abx500_set_pull_updown()

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: abx500: allow to set pull up
Patrice Chotard [Fri, 24 May 2013 12:06:30 +0000 (14:06 +0200)]
pinctrl: abx500: allow to set pull up

On ABx500 chip family, all pins support only pull down except for
AB8540 which supports pull up/down on some pins.
Rework abx500_pin_config_set to be able to set pull up on
pins which support this feature.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: abx500: fix abx500_config_pull_updown
Patrice Chotard [Fri, 24 May 2013 12:06:29 +0000 (14:06 +0200)]
pinctrl: abx500: fix abx500_config_pull_updown

Fix abx500_config_pull_updown() to set correct bit in
AB8540_GPIO_PULL_UPDOWN_REG.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinconf-generic: add BIAS_BUS_HOLD pinconf
James Hogan [Fri, 24 May 2013 16:21:12 +0000 (17:21 +0100)]
pinconf-generic: add BIAS_BUS_HOLD pinconf

Add a new PIN_CONFIG_BIAS_BUS_HOLD pin configuration for a bus holder
pin mode (also known as bus keeper, or repeater). This is a weak latch
which drives the last value on a tristate bus. Another device on the bus
can drive the bus high or low before going tristate to change the value
driven by the pin.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinconf-generic: add drive strength to debugfs output
James Hogan [Fri, 24 May 2013 16:21:11 +0000 (17:21 +0100)]
pinconf-generic: add drive strength to debugfs output

Add the drive strength pinconf to debugfs output (with the unit "mA").

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: abx500: suppress unused mutex
Patrice Chotard [Thu, 23 May 2013 15:28:03 +0000 (17:28 +0200)]
pinctrl: abx500: suppress unused mutex

Suppress a mutex which was initialized on probe
and destroyed on remove but never used.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: sirf: save the status in suspend and restore after resuming
Barry Song [Thu, 16 May 2013 03:17:09 +0000 (11:17 +0800)]
pinctrl: sirf: save the status in suspend and restore after resuming

this patch saves the status of pinctrl registers and restore them while
resuming. this makes all drivers have coherent status for pinmux after
suspending and resuming.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: sink pinctrldev_list_mutex
Linus Walleij [Thu, 16 May 2013 07:17:04 +0000 (09:17 +0200)]
pinctrl: sink pinctrldev_list_mutex

The pinctrldev_list_mutex is sinked into the functions that
actually traverse the list and lock it there. The code makes
much more sense in this way. All the callers are in
non-performance critical paths and the code is way more
readable this way.

Also refactor the function get_pinctrl_dev_from_devname() to
follow the design pattern of get_pinctrl_dev_from_of_node()
which is slightly simpler.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl:sirf:re-arch and add support for new SiRFatlas6 SoC
Barry Song [Tue, 14 May 2013 14:17:58 +0000 (22:17 +0800)]
pinctrl:sirf:re-arch and add support for new SiRFatlas6 SoC

atlas6 is a SoC very similar with primaII, the register layput of
pinctrl is same, but the pads, groups and functions of atlas6 have
different layout with prima2, this patch
1. pull the definition of pads, groups and functions out of the
pinctrl-sirf driver,and put them into soc-specific files
2. add pads, groups and functions tables for atlas6
3. let pads, groups and functions tables become the config data of
   the related dt compatible node, so the pinctrl-sirf can support
   all SiRF SoCs with the config data as private data.

In this patch,we create a sirf dir, and let
the old drivers/pinctrl/pinctrl-sirf.c =
        drivers/pinctrl/sirf/pinctrl-prima2.c +
        drivers/pinctrl/sirf/pinctrl-sirf.c

drivers/pinctrl/sirf/pinctrl-atlas6.c is a newly created file for the
pin layout of atlas6.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agodrivers: pinctrl: vt8500: use devm_ioremap_resource()
Laurent Navet [Sun, 12 May 2013 14:59:51 +0000 (16:59 +0200)]
drivers: pinctrl: vt8500: use devm_ioremap_resource()

Replace a call to deprecated devm_request_and_ioremap by devm_ioremap_resource.

Found with coccicheck and this semantic patch:
 scripts/coccinelle/api/devm_ioremap_resource.cocci

Signed-off-by: Laurent Navet <laurent.navet@gmail.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: dove: add PMU functions to pinctrl
Sebastian Hesselbarth [Mon, 6 May 2013 23:36:08 +0000 (01:36 +0200)]
pinctrl: dove: add PMU functions to pinctrl

Dove power management unit can mux some special functions to mpp0-15.
This patch adds support to set/get the current PMU function mapped
to the corresponding mpp pins. The device tree documentation is also
updated accordingly.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agodrivers/pinctrl/spear: don't check resource with devm_ioremap_resource
Wolfram Sang [Fri, 10 May 2013 08:17:04 +0000 (10:17 +0200)]
drivers/pinctrl/spear: don't check resource with devm_ioremap_resource

devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: enable build of pinctrl-imx6sl driver
Shawn Guo [Mon, 13 May 2013 01:16:02 +0000 (09:16 +0800)]
pinctrl: enable build of pinctrl-imx6sl driver

The pinctrl-imx6sl is in place.  Enable the build of it.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agodrivers/pinctrl: don't check resource with devm_ioremap_resource
Wolfram Sang [Fri, 10 May 2013 08:17:03 +0000 (10:17 +0200)]
drivers/pinctrl: don't check resource with devm_ioremap_resource

devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: u300: remove unnecessary platform_set_drvdata()
Jingoo Han [Mon, 6 May 2013 03:44:55 +0000 (12:44 +0900)]
pinctrl: u300: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: sirf: remove unnecessary platform_set_drvdata()
Jingoo Han [Mon, 6 May 2013 03:43:25 +0000 (12:43 +0900)]
pinctrl: sirf: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: mxs: remove unnecessary platform_set_drvdata()
Jingoo Han [Mon, 6 May 2013 03:42:13 +0000 (12:42 +0900)]
pinctrl: mxs: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agopinctrl: coh901: remove unnecessary platform_set_drvdata()
Jingoo Han [Mon, 6 May 2013 03:40:14 +0000 (12:40 +0900)]
pinctrl: coh901: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agoLinux 3.10-rc5 v3.10-rc5
Linus Torvalds [Sun, 9 Jun 2013 00:41:04 +0000 (17:41 -0700)]
Linux 3.10-rc5

11 years agohpfs: fix warnings when the filesystem fills up
Mikulas Patocka [Sat, 8 Jun 2013 23:25:57 +0000 (01:25 +0200)]
hpfs: fix warnings when the filesystem fills up

This patch fixes warnings due to missing lock on write error path.

  WARNING: at fs/hpfs/hpfs_fn.h:353 hpfs_truncate+0x75/0x80 [hpfs]()
  Hardware name: empty
  Pid: 26563, comm: dd Tainted: P           O 3.9.4 #12
  Call Trace:
    hpfs_truncate+0x75/0x80 [hpfs]
    hpfs_write_begin+0x84/0x90 [hpfs]
    _hpfs_bmap+0x10/0x10 [hpfs]
    generic_file_buffered_write+0x121/0x2c0
    __generic_file_aio_write+0x1c7/0x3f0
    generic_file_aio_write+0x7c/0x100
    do_sync_write+0x98/0xd0
    hpfs_file_write+0xd/0x50 [hpfs]
    vfs_write+0xa2/0x160
    sys_write+0x51/0xa0
    page_fault+0x22/0x30
    system_call_fastpath+0x1a/0x1f

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Cc: stable@kernel.org # 2.6.39+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 8 Jun 2013 22:51:21 +0000 (15:51 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Thomas Gleixner:

 - Trivial: unused variable removal

 - Posix-timers: Add the clock ID to the new proc interface to make it
   useful.  The interface is new and should be functional when we reach
   the final 3.10 release.

 - Cure a false positive warning in the tick code introduced by the
   overhaul in 3.10

 - Fix for a persistent clock detection regression introduced in this
   cycle

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Correct run-time detection of persistent_clock.
  ntp: Remove unused variable flags in __hardpps
  posix-timers: Show clock ID in proc file
  tick: Cure broadcast false positive pending bit warning

11 years agoMerge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux
Linus Torvalds [Sat, 8 Jun 2013 22:50:42 +0000 (15:50 -0700)]
Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux

Pull irqdomain bug fixes from Grant Likely:
 "This branch contains a set of straight forward bug fixes to the
  irqdomain code and to a couple of drivers that make use of it."

* tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux:
  irqchip: Return -EPERM for reserved IRQs
  irqdomain: document the simple domain first_irq
  kernel/irq/irqdomain.c: before use 'irq_data', need check it whether valid.
  irqdomain: export irq_domain_add_simple

11 years agoirqchip: Return -EPERM for reserved IRQs
Grant Likely [Thu, 6 Jun 2013 13:11:38 +0000 (14:11 +0100)]
irqchip: Return -EPERM for reserved IRQs

The irqdomain core will report a log message for any attempted map call
that fails unless the error code is -EPERM. This patch changes the
Versatile irq controller drivers to use -EPERM because it is normal for
a subset of the IRQ inputs to be marked as reserved on the various
Versatile platforms.

Signed-off-by: Grant Likely <grant.likely@linaro.org>
11 years agoirqdomain: document the simple domain first_irq
Linus Walleij [Thu, 6 Jun 2013 11:10:23 +0000 (12:10 +0100)]
irqdomain: document the simple domain first_irq

The first_irq needs to be zero to get a linear domain and that
comes with special semantics. We want to simplify this going
forward but some documentation never hurts.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
11 years agokernel/irq/irqdomain.c: before use 'irq_data', need check it whether valid.
Chen Gang [Tue, 14 May 2013 11:02:45 +0000 (19:02 +0800)]
kernel/irq/irqdomain.c: before use 'irq_data', need check it whether valid.

Since irq_data may be NULL, if so, we WARN_ON(), and continue, 'hwirq'
which related with 'irq_data' has to initialize later, or it will cause
issue.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
11 years agoirqdomain: export irq_domain_add_simple
Arnd Bergmann [Thu, 25 Apr 2013 17:28:54 +0000 (19:28 +0200)]
irqdomain: export irq_domain_add_simple

All other irq_domain_add_* functions are exported already, and apparently
this one got left out by mistake, which causes build errors for ARM
allmodconfig kernels:

ERROR: "irq_domain_add_simple" [drivers/gpio/gpio-rcar.ko] undefined!
ERROR: "irq_domain_add_simple" [drivers/gpio/gpio-em.ko] undefined!

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
11 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sat, 8 Jun 2013 18:56:22 +0000 (11:56 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Another week, another batch of fixes for arm-soc platforms.

  Nothing controversial here, a handful of fixes for regressions and/or
  serious problems across several of the platforms.  Things are slowing
  down nicely on fix rates for 3.10"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: exynos: add debug_ll_io_init() call in exynos_init_io()
  ARM: EXYNOS: uncompress - print debug messages if DEBUG_LL is defined
  ARM: shmobile: sh73a0: Update CMT clockevent rating to 80
  sh-pfc: r8a7779: Don't group USB OVC and PENC pins
  ARM: mxs: icoll: Fix interrupts gpio bank 0
  ARM: imx: clk-imx6q: AXI clock select index is incorrect
  ARM: bcm2835: override the HW UART periphid
  ARM: mvebu: Fix bug in coherency fabric low level init function
  ARM: Kirkwood: TS219: Fix crash by double PCIe instantiation
  ARM: ux500: Provide supplies for AUX1, AUX2 and AUX3
  ARM: ux500: Only configure wake-up reasons on ux500 based platforms
  ARM: dts: imx: fix clocks for cspi
  ARM i.MX6q: fix for ldb_di_sels

11 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Sat, 8 Jun 2013 18:51:13 +0000 (11:51 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS fixes from Ralf Baechle:
 "MIPS fixes across the field.  The only area that's standing out is the
  exception handling which received it's dose of breakage as part of the
  microMIPS patchset"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: ralink: add missing SZ_1M multiplier
  MIPS: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf.
  MIPS: OCTEON: Improve _machine_halt implementation.
  MIPS: rtlx: Fix implicit declaration of function set_vi_handler()
  MIPS: Trap exception handling fixes
  MIPS: Quit exposing Kconfig symbols in uapi headers.
  MIPS: Remove duplicate definition of check_for_high_segbits.

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Linus Torvalds [Sat, 8 Jun 2013 18:50:17 +0000 (11:50 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/gerg/m68knommu

Pull m68knommu fix from Greg Ungerer:
 "A single fix for compilation breakage to many of the ColdFire CPU
  targets"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: only use local gpio_request_one if not using GPIOLIB

11 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sat, 8 Jun 2013 18:35:20 +0000 (11:35 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Regression fixers for the big 3:

   - nouveau: hdmi audio, dac load detect, s/r regressions fixed
   - radeon: long standing system hang fixed, hdmi audio and rs780 fast
     fb fixes
   - intel: one old regression, a WARN removal, and a stop X dying fix

  Otherwise one mgag200 fix, a couple of arm build fixes, and a core use
  after free fix."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/nv50/kms: use dac loadval from vbios, where it's available
  drm/nv50/disp: force dac power state during load detect
  drm/nv50-nv84/fifo: fix resume regression introduced by playlist race fix
  drm/nv84/disp: Fix HDMI audio regression
  drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC.
  drm/radeon: don't allow audio on DCE6
  drm/radeon: Use direct mapping for fast fb access on RS780/RS880 (v2)
  radeon: Fix system hang issue when using KMS with older cards
  drm/i915: no lvds quirk for hp t5740
  drm/i915: Quirk the pipe A quirk in the modeset state checker
  drm/i915: Fix spurious -EIO/SIGBUS on wedged gpus
  drm/mgag200: Add missing write to index before accessing data register
  drm/nouveau: use mdelay instead of large udelay constants
  drm/tilcd: select BACKLIGHT_LCD_SUPPORT
  drm: fix a use-after-free when GPU acceleration disabled

11 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Sat, 8 Jun 2013 17:05:10 +0000 (10:05 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes from Vinod Koul:
 "Fix from Andy is for dmatest regression reported by Will and Rabin has
  fixed runtime ref counting for st_dma40"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmatest: do not allow to interrupt ongoing tests
  dmaengine: ste_dma40: fix pm runtime ref counting

11 years agoMerge tag 'trace-fixes-v3.10-rc3-v3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 8 Jun 2013 01:46:51 +0000 (18:46 -0700)]
Merge tag 'trace-fixes-v3.10-rc3-v3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "This contains 4 fixes.

  The first two fix the case where full RCU debugging is enabled,
  enabling function tracing causes a live lock of the system.  This is
  due to the added debug checks in rcu_dereference_raw() that is used by
  the function tracer.  These checks are also traced by the function
  tracer as well as cause enough overhead to the function tracer to slow
  down the system enough that the time to finish an interrupt can take
  longer than when the next interrupt is triggered, causing a live lock
  from the timer interrupt.

  Talking this over with Paul McKenney, we came up with a fix that adds
  a new rcu_dereference_raw_notrace() that does not perform these added
  checks, and let the function tracer use that.

  The third commit fixes a failed compile when branch tracing is
  enabled, due to the conversion of the trace_test_buffer() selftest
  that the branch trace wasn't converted for.

  The forth patch fixes a bug caught by the RCU lockdep code where a
  rcu_read_lock() is performed when rcu is disabled (either going to or
  from idle, or user space).  This happened on the irqsoff tracer as it
  calls task_uid().  The fix here was to use current_uid() when possible
  that doesn't use rcu locking.  Which luckily, is always used when
  irqsoff calls this code."

* tag 'trace-fixes-v3.10-rc3-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Use current_uid() for critical time tracing
  tracing: Fix bad parameter passed in branch selftest
  ftrace: Use the rcu _notrace variants for rcu_dereference_raw() and friends
  rcu: Add _notrace variation of rcu_dereference_raw() and hlist_for_each_entry_rcu()

11 years agoRevert "ACPI / scan: do not match drivers against objects having scan handlers"
Rafael J. Wysocki [Sat, 8 Jun 2013 00:55:07 +0000 (02:55 +0200)]
Revert "ACPI / scan: do not match drivers against objects having scan handlers"

Commit 9f29ab11ddbf ("ACPI / scan: do not match drivers against objects
having scan handlers") introduced a boot regression on Tony's ia64 HP
rx2600.  Tony says:

  "It panics with the message:

   Kernel panic - not syncing: Unable to find SBA IOMMU: Try a generic or DIG kernel

   [...] my problem comes from arch/ia64/hp/common/sba_iommu.c
   where the code in sba_init() says:

        acpi_bus_register_driver(&acpi_sba_ioc_driver);
        if (!ioc_list) {

   but because of this change we never managed to call ioc_init()
   so ioc_list doesn't get set up, and we die."

Revert it to avoid this breakage and we'll fix the problem it attempted
to address later.

Reported-by: Tony Luck <tony.luck@gmail.com>
Cc: 3.9+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge tag 'mxs-fixes-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6 into...
Olof Johansson [Sat, 8 Jun 2013 01:19:30 +0000 (18:19 -0700)]
Merge tag 'mxs-fixes-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

From Shawn Guo, mxs fixes for 3.10:

- Since the time we move to MULTI_IRQ_HANDLER, the 0x7f polling for no
  interrupt in icoll_handle_irq() becomes insane, because 0x7f is an
  valid interrupt number, the irq of gpio bank 0.  That unnecessary
  polling results in the driver not detecting when irq 0x7f is active
  which makes the machine effectively dead lock.  The fix removes the
  interrupt poll loop and allows usage of gpio0 interrupt without an
  infinite loop.

* tag 'mxs-fixes-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: mxs: icoll: Fix interrupts gpio bank 0

Signed-off-by: Olof Johansson <olof@lixom.net>
11 years agoMerge tag 'imx-fixes-3.10-2' of git://git.linaro.org/people/shawnguo/linux-2.6 into...
Olof Johansson [Sat, 8 Jun 2013 01:18:08 +0000 (18:18 -0700)]
Merge tag 'imx-fixes-3.10-2' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

From Shawn Guo, imx fixes for 3.10, take 2:

- One device tree fix for all spi node to have per clock added.
  The clock is needed by spi driver to calculate bit rate divisor.
  The spi node in the current device trees either does not have the
  clock or is defined as dummy clock, in which case the driver probe
  will fail or spi will run at a wrong bit rate.

- Two imx6q clock fixes, which correct axi_sels and ldb_di_sels.

* tag 'imx-fixes-3.10-2' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: imx: clk-imx6q: AXI clock select index is incorrect
  ARM: dts: imx: fix clocks for cspi
  ARM i.MX6q: fix for ldb_di_sels

Signed-off-by: Olof Johansson <olof@lixom.net>
11 years agoARM: exynos: add debug_ll_io_init() call in exynos_init_io()
Doug Anderson [Wed, 5 Jun 2013 20:56:33 +0000 (13:56 -0700)]
ARM: exynos: add debug_ll_io_init() call in exynos_init_io()

If the early MMU mapping of the UART happens to get booted out of the
TLB between the start of paging_init() and when we finally re-add the
UART at the very end of s3c_init_cpu(), we'll get a hang at bootup if
we've got early_printk enabled.  Avoid this hang by calling
debug_ll_io_init() early.

Without this patch, you can reliably reproduce a hang when early
printk is enabled by adding flush_tlb_all() at the start of
exynos_init_io().  After this patch the hang goes away.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
11 years agoMerge tag 'renesas-fixes-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Sat, 8 Jun 2013 01:10:42 +0000 (18:10 -0700)]
Merge tag 'renesas-fixes-for-v3.10' of git://git./linux/kernel/git/horms/renesas into fixes

From Simon Horman, Renesas ARM based SoC fixes for v3.10:
- Correction to USB OVC and PENC pin groupings on r8a7779 SoC.
  This avoids conflicts when the USB_OVCn pins are used by another function.
  This has been observed to be a problem in v3.10-rc1.
- Update CMT clock rating for sh73a0 SoC to resolve boot failure
  on kzm9g-reference. This resolves a regression between v3.9 and v3.10-rc1.

* tag 'renesas-fixes-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: sh73a0: Update CMT clockevent rating to 80
  sh-pfc: r8a7779: Don't group USB OVC and PENC pins

Signed-off-by: Olof Johansson <olof@lixom.net>
11 years agoARM: EXYNOS: uncompress - print debug messages if DEBUG_LL is defined
Tushar Behera [Tue, 4 Jun 2013 04:19:10 +0000 (09:49 +0530)]
ARM: EXYNOS: uncompress - print debug messages if DEBUG_LL is defined

Printing low-level debug messages make an assumption that the specified
UART port has been preconfigured by the bootloader. Incorrectly
specified UART port results in system getting stalled while printing the
message "Uncompressing Linux... done, booting the kernel"
This UART port number is specified through S3C_LOWLEVEL_UART_PORT. Since
the UART port might different for different board, it is not possible to
specify it correctly for every board that use a common defconfig file.

Calling this print subroutine only when DEBUG_LL fixes the problem. By
disabling DEBUG_LL in default config file, we would be able to boot
multiple boards with different default UART ports.

With this current approach, we miss the print "Uncompressing Linux...
done, booting the kernel." when DEBUG_LL is not defined.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
11 years agoMerge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Fri, 7 Jun 2013 23:29:21 +0000 (16:29 -0700)]
Merge tag 'rdma-for-linus' of git://git./linux/kernel/git/roland/infiniband

Pull infiniband fixes from Roland Dreier:
 - qib RCU/lockdep fix
 - iser device removal fix, plus doc fixes

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/qib: Fix lockdep splat in qib_alloc_lkey()
  MAINTAINERS: Add entry for iSCSI Extensions for RDMA (iSER) initiator
  IB/iser: Add Mellanox copyright
  IB/iser: Fix device removal flow