These structures are only used to copy into other structures, so declare
them as const.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct gpio_chip i@p = { ... };

@ok@
identifier r.i;
expression e;
position p;
@@
e = i@p;

@bad@
position p != {r.p,ok.p};
identifier r.i;
struct gpio_chip e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct gpio_chip i = { ... };
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Joel Stanley <joel@jms.id.au>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

probe_irq_off() returns '0' on failure, not NO_IRQ, so the check
in this driver is clearly wrong. This replaces it with the
regular '!irq' check used in other drivers.

The sa1100 platform that this driver is used on originally numbered
all its interrupts starting at '0', which would have conflicted with
this change, but as of commit 18f3aec3 ("ARM: 8230/1: sa1100: shift
IRQs by one"), this is not a problem any more.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Since the act8945a-charger is regarded as a sub-device and it using
"interrupts" property, update the examples section.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Bulk access is not working with twl6040, we need to use single register
access. Bulk access would happen when we try to sync the regcache after
power on.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

As runtime PM doesn't function whilst processing system suspend/resume
operations and the Arizona IRQ handlers need runtime PM to function
we must disable IRQs during these operations. Whilst this is
already done in the driver we are using suspend/suspend_late and
resume/resume_noirq to do so which has two problems. Firstly, as
suspend_late is before suspend_noirq that means we still have a
small window where an IRQ can cause issues.  Secondly, if another
suspend_late handler fails after ours has run then (as resume_noirq
will not run) we will make unbalanced calls to enable_irq.

This is all simply fixed by using the suspend_noirq callback rather
than suspend_late. Whilst we are doing this tidy the code up a little,
and use the appropriate helper macros.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

To regard the act8945a-charger as a sub-device, add .of_compatible for
act8945a-charger cell.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

There are some cases in arizona_dev_init, such as where we don't
recognise the chip ID, in which we head to the error path without
setting a sensible error code in ret. This would lead to the chip
silently failing probe, as it would still return 0. Fix this up by
adding appropriate sets of the return value.

Whilst adding these update the existing paths that do return an error
when the chip is not recognised to use ENODEV, which seems like a better
fit.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This patch adds common driver for the Top block of the Samsung Exynos
SoC Low Power Audio Subsystem.  This is a minimal driver which prepares
resources for IP blocks like I2S, audio DMA and UART and exposes
a regmap for the Top block registers.  Also system power ops are added
to ensure the Audio Subsystem is operational after system suspend/resume
cycle.
Signed-off-by: Inha Song <ideal.song@samsung.com>
Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This patch adds documentation of the DT bindings for the Samsung
Exynos SoC Low Power Audio Subsystem.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The function da9052_clear_fault_log() is added to mitigate the case of
persistent data being transferred between reboots.

Clearance of any the persistent information within the DA9053 FAULT_LOG
register must be completed during start-up so the fault-log does not
continue with previous values. A clearance function has been added here in
the kernel driver because wiping the fault-log cannot be counted on outside
the Linux kernel.
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Reviewed-by: Adam Thomson <adam.thomson.opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Adjust jump targets according to the Linux coding style convention.
Another check for the variable "status" can be omitted then at the end.

Link: https://lkml.kernel.org/g/<20160628163146.GG29166@dell>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Member "status" of struct usb_sg_request is managed by usb core. A
spin lock is used to serialize the change of it. The driver could
check the value of req->status, but should avoid changing it without
the hold of the spinlock. Otherwise, it could cause race or error
in usb core.

This patch could be backported to stable kernels with version later
than v3.14.

Cc: stable@vger.kernel.org # 3.14+
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Roger Tseng <rogerable@realtek.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

probe_irq_on() only returns non-zero if it found any interrupts below
IRQ32 which could be probe candidates.  If all the probable interrupts
are higher than 32, then this will cause a failure.  Fix this.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The MSM8660, APQ8060, IPQ806x and MSM8960 have a GCC clock
to the message RAM used by the RPM. This needs to be enabled
for messages to pass through. This is a crude solution that
simply prepare/enable at probe() and disable/unprepare
at remove(). More elaborate PM is probably possible to
add later.

The construction uses IS_ERR() to gracefully handle the
platforms that do not provide a message RAM clock. It will
bail out of probe only if the clock is hitting a probe
deferral situation.

Of course this requires the proper device tree set-up:

rpm: rpm@104000 {
    compatible = "qcom,rpm-msm8660";
    clocks = <&gcc RPM_MSG_RAM_H_CLK>;
    clock-names = "ram";
    ...
};

I have provided this in the MSM8660 device tree, and will
provide patches for the other targets.

Cc: Björn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Change my email address to kernel.org instead of Samsung one for the
purpose of any future contact.  The copyrights remain untouched and are
attributed to Samsung.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The lp873x series of PMICs have a bunch of regulators and a couple
of GPO(General Purpose Outputs).
Add information for the MFD and regulator drivers.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The Intel Whiskey Cove PMIC includes several function units, e.g.
ADC, thermal, USB Type-C, GPIO, etc. The corresponding device has
to be created in the mfd driver(intel_soc_pmic_bxtwc.c). This change
adds the USB Type-c device.
Signed-off-by: Bin Gao <bin.gao@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Intel Kaby Lake PCH-H has the same LPSS than Intel Sunrisepoint. Add the new
IDs to the list of supported devices.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

set_bit() and clear_bit() take the bit number so this code is really
doing "1 << (1 << irq)" which is a double shift bug.  It's done
consistently so it won't cause a problem unless "irq" is more than 4.

Fixes: 70c6cce0 ('mfd: Support 88pm80x in 80x driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

It's only used in this driver and never get modified, make it static const.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Thor Thayer <tthayer@opensource.altera.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This fixes a compile failure:

	drivers/built-in.o: In function `wm8350_i2c_probe':
	core.c:(.text+0x828b0): undefined reference to `__devm_regmap_init_i2c'
	Makefile:953: recipe for target 'vmlinux' failed

Fixes: 52b461b8 ("mfd: Add regmap cache support for wm8350")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Remove incorrect e-mail addresses from the copyright header and
MODULE_AUTHOR() macro. These e-mail addresses are no longer in use.

The author names have not been changed, only the e-mail addresses have
been deleted from the source files.
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Now that we have a GPIO driver for the AXP209, we can add it to our MFD.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Merge branches 'ib-mfd-gpio-4.9', 'ib-mfd-gpio-regulator-4.9', 'ib-mfd-input-4.9', 'ib-mfd-regulator-4.9', 'ib-mfd-regulator-4.9.1', 'ib-mfd-regulator-rtc-4.9', 'ib-mfd-regulator-rtc-4.9-1' and 'ib-mfd-rtc-4.9' into ibs-for-mfd-merged

This patch adds requesting of the clocks supplied on MCLK1, MCLK2 pins,
gating of the 32k clock is added to the arizona_clk32k_enable(),
arizona_clk32k_disable() helpers.

It's a temporary change until the CODEC's clock controller gets exposed
through the clk API and is helpful for board configurations where the
MCLK clocks are not provided by always on oscillators.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The X-Powers AXP806 is a new PMIC that is paired with Allwinner's A80
SoC, along with a master AXP809 PMIC.

This PMIC has a new register layout, and supports some functions not
seen in other X-Powers PMICs, such as master-slave mode, or having
multiple AXP806 PMICs on the same bus with address space extension,
or supporting both I2C and RSB mode. I2C has not been tested.

This patch adds support for the interrupts of the PMIC. A regulator
sub-device is enabled, but actual regulator support will come in a
later patch.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This patch adds the basic and regulator bindings for the X-Powers AXP806
PMIC.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The X-Powers AXP806 PMIC has a new set of buck and LDO regulators, and
also a switch. The buck regulators support teaming into multi-phase
groups, with A+B, A+B+C, D+E groupings.

Some registers controlling DCDC converter work settings are at different
offsets. Deal with them as well.

Add support for this new variant.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The RK808 and RK818 PMICs are using a similar register map.
We can reuse the rtc driver for the RK818 PMIC. So let's add
the RK818 in the Kconfig description.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Add device tree bindings documentation for Rockchip's RK818 PMIC.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Add support for the rk818 regulator. The regulator module consists
of 4 DCDCs, 9 LDOs, 1 switch and 1 BOOST converter which is used to
power OTG and HDMI5V.

The output voltages are configurable and are meant to supply power
to the main processor and other components.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The RK818 chip is a Power Management IC (PMIC) for multimedia and handheld
devices. It contains the following components:

- Regulators
- RTC
- Clocking
- Battery support

Both RK808 and RK818 chips are using a similar register map,
so we can reuse the RTC and Clocking functionality.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Tested-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Change the MFD config option as per latest naming
Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Add driver for lp873x PMIC family GPOs. Two GPOs are supported
and can be configured in Open-drain output or Push-pull output.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The LP873X chip is a power management IC for Portable Navigation Systems
    and Tablet Computing devices. It contains the following components:

     - Regulators.
     - Configurable General Purpose Output Signals (GPO).

PMIC interacts with the main processor through i2c. PMIC has
couple of LDOs (Linear Regulators), couple of BUCKs (Step-Down DC-DC
Converter Cores) and GPOs (General Purpose Output Signals).
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Because events other that keyboard ones will be handled by now on by
other drivers, stop directly handling interrupts and instead listen to
the new notifier in the MFD driver.
Signed-off-by: Vic Yang <victoryang@google.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Newer revisions of the ChromeOS EC add more events besides the keyboard
ones. So handle interrupts in the MFD driver and let consumers register
for notifications for the events they might care.

To keep backward compatibility, if the EC doesn't support MKBP event, we
fall back to the old MKBP key matrix host command.

Cc: Randall Spangler <rspangler@chromium.org>
Cc: Vincent Palatin <vpalatin@chromium.org>
Cc: Benson Leung <bleung@chromium.org>
Signed-off-by: Vic Yang <victoryang@google.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>