The platforms that use the AB8500 define all IRQ resources in the
device tree and they are automatically populated by matching
the .of_compatible string. These static resources are just
surplus baggage these days.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

set_irq_flags is ARM specific with custom flags which have genirq
equivalents. Convert drivers to use the genirq interfaces directly, so we
can kill off set_irq_flags. The translation of flags is as follows:

IRQF_VALID -> !IRQ_NOREQUEST
IRQF_PROBE -> !IRQ_NOPROBE
IRQF_NOAUTOEN -> IRQ_NOAUTOEN

For IRQs managed by an irqdomain, the irqdomain core code handles clearing
and setting IRQ_NOREQUEST already, so there is no need to do this in
.map() functions and we can simply remove the set_irq_flags calls. Some
users also modify IRQ_NOPROBE and this has been maintained although it
is not clear that is really needed. There appears to be a great deal of
blind copy and paste of this code.
Signed-off-by: NRob Herring <robh@kernel.org>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Constify in various drivers configuration data which is not modified:
 - regmap_irq_chip,
 - individual regmap_irq's in array,
 - regmap_config,
 - irq_domain_ops,
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

A platform_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

The config symbol 'CONFIG_DEBUG_FS' should be protected by a 'ifdef' instead
of a plain 'if'.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Soothes the following checkpatch warnings:

    WARNING: line over 80 characters
    #151: FILE: drivers/mfd/ab8500-core.c:151:
    +	0, 1, 2, 3, 4, -1, -1, -1, -1, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23,

    ERROR: spaces required around that '=' (ctx:VxW)
    #325: FILE: drivers/mfd/ab8500-core.c:325:
    +	ret= mask_and_set_register_interruptible(ab8500, bank, reg,
     	   ^

    WARNING: line over 80 characters
    #418: FILE: drivers/mfd/ab8500-core.c:418:
    +		else if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R)

    WARNING: line over 80 characters
    #420: FILE: drivers/mfd/ab8500-core.c:420:
    +		else if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R)

    ERROR: spaces required around that '==' (ctx:VxV)
    #454: FILE: drivers/mfd/ab8500-core.c:454:
    +	if ((i==3) && (*offset >= 24))
     	      ^

    ERROR: code indent should use tabs where possible
    #576: FILE: drivers/mfd/ab8500-core.c:576:
    +        .map    = ab8500_irq_map,$

    WARNING: please, no spaces at the start of a line
    #576: FILE: drivers/mfd/ab8500-core.c:576:
    +        .map    = ab8500_irq_map,$

    ERROR: code indent should use tabs where possible
    #577: FILE: drivers/mfd/ab8500-core.c:577:
    +        .xlate  = irq_domain_xlate_twocell,$

    WARNING: please, no spaces at the start of a line
    #577: FILE: drivers/mfd/ab8500-core.c:577:
    +        .xlate  = irq_domain_xlate_twocell,$

    WARNING: char * array declaration might be better as static const
    #1554: FILE: drivers/mfd/ab8500-core.c:1554:
    +	static char *switch_off_status[] = {

    WARNING: char * array declaration might be better as static const
    #1563: FILE: drivers/mfd/ab8500-core.c:1563:
    +	static char *turn_on_status[] = {

    WARNING: sizeof *ab8500 should be sizeof(*ab8500)
    #1582: FILE: drivers/mfd/ab8500-core.c:1582:
    +	ab8500 = devm_kzalloc(&pdev->dev, sizeof *ab8500, GFP_KERNEL);

    ERROR: space required after that close brace '}'
    #1639: FILE: drivers/mfd/ab8500-core.c:1639:
    +	}/* Configure AB8500 or AB9540 IRQ */

    WARNING: line over 80 characters
    #1652: FILE: drivers/mfd/ab8500-core.c:1652:
    +	ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL);

    WARNING: Prefer [subsystem eg: netdev]_cont([subsystem]dev, ... then dev_cont(dev, ... then pr_cont(...  to printk(KERN_CONT ...
    #1677: FILE: drivers/mfd/ab8500-core.c:1677:
    +				printk(KERN_CONT " \"%s\"",

    WARNING: Prefer [subsystem eg: netdev]_cont([subsystem]dev, ... then dev_cont(dev, ... then pr_cont(...  to printk(KERN_CONT ...
    #1682: FILE: drivers/mfd/ab8500-core.c:1682:
    +		printk(KERN_CONT "\n");

    WARNING: Prefer [subsystem eg: netdev]_cont([subsystem]dev, ... then dev_cont(dev, ... then pr_cont(...  to printk(KERN_CONT ...
    #1684: FILE: drivers/mfd/ab8500-core.c:1684:
    +		printk(KERN_CONT " None\n");

    WARNING: printk() should include KERN_ facility level
    #1695: FILE: drivers/mfd/ab8500-core.c:1695:
    +				printk("\"%s\" ", turn_on_status[i]);

    WARNING: printk() should include KERN_ facility level
    #1700: FILE: drivers/mfd/ab8500-core.c:1700:
    +		printk("None\n");

    total: 5 errors, 14 warnings, 1869 lines checked
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Save a line of code (albeit, it's replaced by a blank line, but
still), as the else is superfluous.
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The AD8500 defines itself as interrupt-controller in DT,
but it doesn't assign DT node to IRQ domain when creates it.
As result, of_irq_xx() helpers don't work because they can't
find necessary IRQ domain.

Hence, fix it by assigning AD8500 core device DT node to IRQ
domain when it's created.

This patch fixes STE u8500 Snowball boot failure reported by Kevin Hilman
https://lkml.org/lkml/2014/5/27/624Reported-and-tested-by: NKevin Hilman <khilman@linaro.org>
Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The DBx500 and ABx500 should be getting their IRQs from the
device tree and nowhere else. Get rid of all the static assignments
everywhere, delete it from the driver, platform data and the
board files in one swift strike.

Lots of cross-dependencies in the MFD drivers for PRCMU and
AB8500 makes it necessary to strike everywhere at once to
eradicate IRQs passed as resources and platform data to the left
and right around the platform.

Cc: Mark Brown <broonie@kernel.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

All subdrivers use the irqdomain to demux AB8500 IRQs but here
in the hierarchical path we find a leftover instance using the
hard-coded IRQ base. Convert it to use irqdomain with a
oneliner.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

As of commit 03e361b2 ("mfd: Stop setting
refcounting pointers in original mfd_cell arrays"), the "cell" parameter of
mfd_add_devices() is "const" again. Hence make all cell data passed to
mfd_add_devices() const where possible.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The AB8500 external regulator driver is now a device in its own right,
so it requires registering and probing in the normal way. This patch
will ensure the driver is probed once registered for all devices which
support them.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Add of_compatible string to the ab8500-codec cell to allow the driver to
grab handlers such as regulators from device-tree when available.
Signed-off-by: NFabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

AB8540 RTC have changed between AB8540_cut1 and AB8540_cut2.Different
ressources to define for those two version.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJulien Delacou <julien.delacou@stericsson.com>
Signed-off-by: NAlexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The ab8500-leds driver has never been upstreamed and was replaced by a
PWM framework based driver, so these references are not needed anymore.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NFabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

When booting with Device Tree enabled the MFD core uses each device's
compatible string to find and allocate its associated of_node pointer,
which in turn is passed to the driver via the platform_device struct.
Without it, the driver won't be able to interrogate the Device Tree or
locate suitable regulators and will most likely fail to probe.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

When we're using Device Tree to enable GPIO drivers we're forced to be
OS agnostic, thus we are forbidden use names like pinctrl as they are
specific only to Linux, at least for the time being. However, when we
are registering devices using internal systems such as MFD or platform
registration, we can use such terminology. In this case we can and
should use the platform device ID mechanism to specify which device we
wish to utilise by detailing pinctrl-<device_name>.

This patch fixes a regression that when booting with Device Tree
enabled the ABx500 GPIO/Pinctrl devices are not probed.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The AB8500 debug code which was merged in parallell with the
multiplatform work incidentally introduced a new instance using
the <mach/irqs.h> header which is now deleted, causing this
build regression:

drivers/mfd/ab8500-debugfs.c:95:23:
fatal error: mach/irqs.h: No such file or directory
compilation terminated.
make[4]: *** [drivers/mfd/ab8500-debugfs.o] Error 1

The code most certainly never worked with device tree either
since that does not rely on this kind of hard-coded interrupt
numbers.

Fix the problem at the root by passing it as a named resource
from the ab8500-core driver. Use an untyped resource to
stop the MFD core from remapping this IRQ relative to the
AB8500 irqdomain.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add of_comptabile string to the ab8500-usb cell to allow the driver to
grab properties from device-tree when available.
Signed-off-by: NFabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

AB8500 asserts LATCH bits for masked out interrupts.  This patch
explicitly masks those out using the cached mask value to prevent
handle_nested_irq() being called for masked IRQ on the same register as
unmasked ones.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NFabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add support for a power cut feature which allows user to
configure when ab8505 and ab8540 based platforms should shut
down system due to low battery.
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Make use of the hierarchical interrupt rergister called
ITLatchHier1 - 3 also for the 8500 platform (currently the
hierarchical interrupt registers are used only for the 8540
and 9540 platforms). This will make the interrupt routing
go faster since fewer i2c reads need to made in the most
common cases.
Signed-off-by: NDariusz Szymczak <dariusz.xd.szymczak@stericsson.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NMian Yousaf KAUKAB <mian.yousaf.kaukab@stericsson.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

Hierarchically, the abx500-clk shall be considered as a child of the
ab8500 core. The abx500-clk is intiated at arch init and thus the clks
will be available when clients needs them.
Signed-off-by: NUlf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NPhilippe LANGLAIS <philippe.langlais@stericsson.com>
Reviewed-by: NPatrice CHOTARD <patrice.chotard@stericsson.com>
Reviewed-by: NGabriel FERNANDEZ <gabriel.fernandez@stericsson.com>
Reviewed-by: NPhilippe BEGNIC <philippe.begnic@stericsson.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

Several states can be detected when a device is initially turned on.
This patch displays these states in the log. If none of the states
are true, then we report that too.
Signed-off-by: NMattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NMarcus COOPER <marcus.xm.cooper@stericsson.com>
Reviewed-by: NJonas ABERG <jonas.aberg@stericsson.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

Add VBUS_DET_R, VBUS_DET_F IRQ, ID_DET_PLUGR and ID_DET_PLUGF IRQ
information to ab8505_iddet_resources. These are required to get
interrupts for AB8505 cut-2.
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NAlexandre Torgue <alexandre.torgue@stericsson.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NMarcus COOPER <marcus.xm.cooper@stericsson.com>
Reviewed-by: NMattias WALLIN <mattias.wallin@stericsson.com>
Tested-by: NMaxime COQUELIN <maxime.coquelin@stericsson.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

ITSource/ITLatch 7, 8, 9 and 10 don't exist on AB8540. This patch
replaces them with '-1' in the interrupt list, and handles the '-1'
in the code accordingly.
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

Here we're separating Battery Management devices into their own
structure, removing the common device structure & redistribute them
amongst the individual platform structs and completing the population
of them.
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NLee Jones <lee.jones@linaro.org>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

There are missing register descriptions from the AB8505 user manual
and these need to be masked so that the APEINT line can toggle.
This patch also affects the behaviour of AB9540.
Signed-off-by: NMarcus Cooper <marcus.xm.cooper@stericsson.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NMaxime COQUELIN <maxime.coquelin@stericsson.com>
Reviewed-by: NAlexandre TORGUE <alexandre.torgue@stericsson.com>
Reviewed-by: NMattias WALLIN <mattias.wallin@stericsson.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

In L9540, turn_on_status register is not updated correctly if
the device is rebooted with AC/USB charger connected. Due to
this, the device boots android instead of entering into charge
only mode. Read the AC/USB status register to detect the charger
presence and update the turn on status manually.
Signed-off-by: NRajkumar Kasirajan <rajkumar.kasirajan@stericsson.com>
Signed-off-by: NPer Forlin <per.forlin@stericsson.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NRupesh KUMAR <rupesh.kumar@stericsson.com>
Reviewed-by: NPhilippe LANGLAIS <philippe.langlais@stericsson.com>
Tested-by: NRupesh KUMAR <rupesh.kumar@stericsson.com>
Tested-by: NPhilippe LANGLAIS <philippe.langlais@stericsson.com>
Acked-by: NSamuel Ortiz <sameo@linux.intel.com>

We are using a generic abx500 hwmon layer, so rename specific ab8500 to generic
abx500 for hwmon device and driver matching.
Signed-off-by: NHongbo Zhang <hongbo.zhang@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The old AB8500 GPIO driver has been un-BROKEN and converted into a
multi-platform pinctrl driver. If any AB9540 based devices wish to
request any GPIO pins that it offers, they can after this patch.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The old, BROKEN AB8500 GPIO driver has been revamped as a shiny
new pinctrl driver and has been renamed as such. So, if we would
like to make use of it, we need to register it via its new name.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

In the AB8500 IRQ mask and unmask functions, we rely on testing for
IRQ_TYPE_EDGE_RISING and IRQ_TYPE_EDGE_FALLING interrupts to
physically mask and unmask the correct interrupt lines. In order
for us to do that, the trigger needs to be set in the associated
flags. However, unless a irq_set_type() function pointer is passed
when registering the IRQ chip, the IRQ subsystem will refuse to do
it. For that reason, we're providing one.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The patch:
"mfd: ab8500: prepare to handle AB8500 GPIO's IRQs correctly"
altered the AB8500 IRQ mask/unmask functions such that they
would handle masking on/off the falling edge IRQ if this was
requested by the consumer. However the bit mask for hwirqs
43 and 44 was shifting the bit mask incorrectly, resulting in
the wrong IRQ being mased/unmasked.

Further while the patch would mask/unmask the correct line,
when the interrupt actually came in, it would still be treated
as a valid hwirq. The offsetting applied when masking/unmasking
was not applied when handling the IRQ, i.e. the falling edge
lines were not routed back to the rising edge lines.

This fixes both cases. The end result has been tested with
the SIM detect IRQ, GPIO12, hwirq 46 and 62.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>

In an upcoming patch, the gpio-ab8500 driver will relinquish all
IRQ handling capability and pass it back into the AB8500 core
driver. This will aid in reducing massive code duplication within
the kernel. Also, most of the functionality is already in the
AB8500 core driver, as the GPIO IRQs are actually sandwiched
between lots of other IRQs which the core driver already handles.

All we're doing here is providing the core driver with knowledge
that each GPIO has two IRQs assigned to it; one for rising and
a separate one for falling.

Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

This patch adds an entry in debugfs to check number of interrupts
from the AB.
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NBengt Jonsson <bengt.g.jonsson@stericsson.com>
Reviewed-by: NRabin VINCENT <rabin.vincent@stericsson.com>

Implement an API so that a user may dump all AB8500 registers
via debugfs file access.
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NMian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Reviewed-by: NLinus WALLEIJ <linus.walleij@stericsson.com>
Reviewed-by: NJonas ABERG <jonas.aberg@stericsson.com>

If charging is started before USB enumeration of an Accessory
Charger Adapter has finished, the AB8500 will generate a
VBUS_ERROR. This in turn results in timeouts and delays the
enumeration with around 15 seconds. This patch delays the
charging and then ramps currents slowly to avoid VBUS errors.
The delay allows the enumeration to have finished before
charging is turned on.
Signed-off-by: NMartin Sjoblom <martin.w.sjoblom@stericsson.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NJonas ABERG <jonas.aberg@stericsson.com>
Tested-by: NJonas ABERG <jonas.aberg@stericsson.com>