There is no need to do this as HPDET identification will cause MICBIAS to
be powered down again.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The Arizona button detection circuit is configurable, allowing the system
integrator to program a range of thresholds for the buttons supported on
the accessory but currently the driver uses the default button ranges and
does not provide any flexibility in how this is exposed to the application
layer.

Provide platform data allowing the user to control this and to map
the buttons to keys in the input subsystem.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

In some pathological use cases users may insert an accessory very slowly
causing multiple indeterminate measurements. Handle this by retrying many
measurements before we give up and declare a headphone.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Running HPDET while the headphone outputs are enabled can disrupt the
operation of HPDET. In order to avoid this HPDET needs to disable the
headphone outputs and ASoC needs to not enable them while HPDET is
running.

For extcon instead of checking if the headphone output is enabled when
doing magic application unconditionally disable the output and restore
the state which ASoC wants set when undoing the magic.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

We have a very similar sequence doing magic writes in several places
(one of which missed an update to interlock with the CODEC driver) so
factor it out into a function.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

This patch use delayed workqueue to check cable state after a certain
time. If extcon-max8997 driver check cable state during booting of
platform, this couldn't send the correct notification of cable state
to extcon consumer. Alwasys, this driver should check cable state
after the completion of platform initialization
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

This patch set default H/W line path according to platfomr data.
The MAX8997 MUIC device can possibly set UART/USB or UART_AUX
/USB_AUX to internal H/W line path of MUIC device. Namely, only
one H/W line is used for two operation.

For example,
if H/W line path of MAX8997 device set UART/USB, micro usb cable
is connected to AP(Application Processor) and if H/W line path
set UART_AUX/USB_AUX, micro usb cable is connected to CP(Coprocessor).
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

This patch make max8997_muic_get_cable_type() function to remove
duplicate code for checking ADC/Charger cable type because almost
internal function need to read adc/chg_type value of MUIC register.

Also, remove *_detach() function, extcon-max8997 driver treat
attach/detach operation of cable in max8997_*_handler() function.
Lastly, this patch move defined constant in header file(include/
linux/mfd/max8997.h, max8997-private.h) because defined constant
is only used in the 'extcon-max8997.c'.
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

This patch set default of ADC Debounce Time(25ms) during probe step.
Also, can possible change ADC Debounce Time according to H/W situation
by using max8997_set_adc_debounce_time()
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

This patch move defined constants to header file(max77693-private.h)
because of mask/unmask selectively interrupt of MUIC device according
to attribute of H/W board.
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

'max77693_extcon_cable' is used only in this file. Hence
make it static.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

'break' after 'return' is never executed and hence can be deleted.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

'max8997_extcon_cable' is used only in this file. Hence make it static.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

When using HPDET to identify the accessory still run MICDET before we
report a microphone in order to ensure that the accessory identified is
compatible with the MICDET detection ranges after having confirmed that
the device is not using a headphone.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

This should always be the most accurate reading for supported accessory
configurations.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

It is important to clear the wake trigger status bits otherwise DCVDD
will be held high independent of the state of the LDOENA line.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The magic is already done as part of enabling the headphone output so
does not need to be done when the headphone outputs are enabled. We hold
the DAPM lock so the headphone status can't be changed underneath us.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The HPDET identification method does not have the same natural debounce
built into it that the standard MICDET method does so add some extra on
top of what the jack detection does in hardware to make sure we get a
robust result.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

When starting microphone detection some headsets should be exposed to
the fully regulated microphone bias in order to ensure that they behave
in an optimal fashion.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Allow systems to tune detection rate and debounce suitably for their
mechanical parameters.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

For iio_channel_get to work with OF based configurations, it needs the
consumer device pointer instead of the consumer device name as argument.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Acked-by: NAnton Vorontsov <anton@enomsg.org>
Acked-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This patch fix build error of following log:

drivers/built-in.o: In function `max77693_muic_remove':
extcon-max77693.c:(.text+0x664853): undefined reference to `input_unregister_device'
drivers/built-in.o: In function `max77693_muic_probe':
extcon-max77693.c:(.text+0x664971): undefined reference to `input_allocate_device'
extcon-max77693.c:(.text+0x6649c1): undefined reference to `input_set_capability'
extcon-max77693.c:(.text+0x6649d6): undefined reference to `input_set_capability'
extcon-max77693.c:(.text+0x6649eb): undefined reference to `input_set_capability'
extcon-max77693.c:(.text+0x664a00): undefined reference to `input_set_capability'
extcon-max77693.c:(.text+0x664a15): undefined reference to `input_set_capability'
extcon-max77693.c:(.text+0x664a20): undefined reference to `input_register_device'
drivers/built-in.o: In function `max77693_muic_adc_handler':
extcon-max77693.c:(.text+0x665318): undefined reference to `input_event'
extcon-max77693.c:(.text+0x66532a): undefined reference to `input_event'
make[1]: *** [vmlinux] Error 1
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>
Reported-by: NRandy Dunlap <rdunlap@infradead.org>
Acked-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

We now have mechanisms in place to allow retries so let's use them rather
than guessing.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Ensure we clamp as quickly as possible after removal by disabling the
debounce while there is an accessory present.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

With some GPIO control it is possible to detect microphones in a wider
range of configurations by directly measuring the microphone impedance
when the HPDET method cannot distinguish between the behaviour of the
two grounds. Allow a GPIO to be provided in platform data and use it to
implement this behaviour.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

The accessory detection functionality in Arizona devices is flexible and
supports several system designs in addition to the default one implemented
by the existing driver. One such design uses the HPDET feature to determine
what kind of accessory is present by comparing measurements taken with the
two headphone grounds available on the device, implement that if selected
by platform data.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

Use the headphone detection to identify if the accessory is a headphone or
line load. There are two different revisions of the IP with different
register layouts, support both.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

Some system designs provide an input on GPIO5 which in conjunction with
the jack detection feature indicates the presence of an accessory.
Support such systems, using the microphone clamp feature to minimise
wakeups of the processor.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

Newer Arizona devices include a microphone clamp function which is tied to
jack detect. Activate this feature when present in order to ensure best
performance of the subsystem.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

Allow configuration of the rise time for MICBIAS via platform data, the
delay required depends on things like the external component selection.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Acked-by: NMyungJoo Ham <myungjoo.ham@samsung.com>

The micd_pol GPIO is only requested if we've specified one greater than 0
so apply the same test before we set it.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

Now this is configured by platform data remove the defualt configuration
the driver had.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMyungjoo Ham <myungjoo.ham@samsung.com>