Commit Graph

60 Commits

Author SHA1 Message Date
Greg Kroah-Hartman
2424a7339b Update extcon for 3.13
This patchset modify extcon core to remove unnecessary allocation sequence for
 'dev' instance and change extcon_dev_register() interface. extcon-gpio use
 gpiolib API to get debounce time and include small fix of extcon core/device
 driver.
 
 Detailed description for patchset:
 1. Modify extcon core driver
 - The extcon-gpio driver use gpio_set_debounce() API provided from gpiolib
 if gpio driver for SoC support gpio_set_debounce() function and support 'gpio_
 activ_low' filed to check whether gpio active state is 1(high) or 0(low).
 - Change field type of 'dev' in structure extcon_dev and remove the sequence
 of allocating memory of 'struct dev' on extcon_dev_register() function because
 extcon device must need 'struct device.
 - Change extcon_dev_register() prototype to simplify it and remove unnecessary
 parameter as below:
 
 2. Fix coding style and typo
 - extcon core     : Fix indentation coding style and remove unnecessary casting
 - extcon-max8997  : Fix checkpatch warning
 - extcon-max77693 : Fix checkpatch warning
 - extcon-arizona  : Fix typo of comment and modify minor issue
 - extcon-palmas   : Use dev_get_platdata()
 
 3. Modify extcon-arizona driver
 - Modify minor issue about micbias and comparision statement
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Merge tag 'extcon-next-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next

Chanwoo writes:

Update extcon for 3.13

This patchset modify extcon core to remove unnecessary allocation sequence for
'dev' instance and change extcon_dev_register() interface. extcon-gpio use
gpiolib API to get debounce time and include small fix of extcon core/device
driver.

Detailed description for patchset:
1. Modify extcon core driver
- The extcon-gpio driver use gpio_set_debounce() API provided from gpiolib
if gpio driver for SoC support gpio_set_debounce() function and support 'gpio_
activ_low' filed to check whether gpio active state is 1(high) or 0(low).
- Change field type of 'dev' in structure extcon_dev and remove the sequence
of allocating memory of 'struct dev' on extcon_dev_register() function because
extcon device must need 'struct device.
- Change extcon_dev_register() prototype to simplify it and remove unnecessary
parameter as below:

2. Fix coding style and typo
- extcon core     : Fix indentation coding style and remove unnecessary casting
- extcon-max8997  : Fix checkpatch warning
- extcon-max77693 : Fix checkpatch warning
- extcon-arizona  : Fix typo of comment and modify minor issue
- extcon-palmas   : Use dev_get_platdata()

3. Modify extcon-arizona driver
- Modify minor issue about micbias and comparision statement
2013-09-26 20:47:25 -07:00
Chanwoo Choi
42d7d7539a extcon: Simplify extcon_dev_register() prototype by removing unnecessary parameter
This patch remove extcon_dev_register()'s second parameter which means
the pointer of parent device to simplify prototype of this function.
So, if extcon device has the parent device, it should set the pointer of
parent device to edev.dev.parent in extcon device driver instead of in
extcon_dev_register().

Cc: Graeme Gregory <gg@slimlogic.co.uk>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-09-27 09:37:01 +09:00
Charles Keepax
4102424302 extcon: arizona: Don't require micbias to be shifted in pdata
Every other pdata field is specified unshifted the patch handles
shifting for the MICBIAS from the microphone detection polarity
configurations in the extcon driver rather than demanding it in
pdata to match other fields.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:01 +09:00
Charles Keepax
4ba1a9ff59 extcon: arizona: Correct typo in headphone detect range transitions
We should move range when the measured value is greater than or equal to
the max value not when greater than.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:01 +09:00
Sachin Kamat
d97abdde17 extcon: arizona: Fix a typo in a comment
Fixes an incomplete comment introduced by commit 9c2ba270
("extcon: arizona: Simplify HPDET based identification").

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:00 +09:00
Charles Keepax
cb9005d7da extcon: arizona: Clear trig_sts bits on all paths
We want the trig_sts bits to be cleared in all cases where we consider
the jack detection interrupt to have been handled. Specifically, if a
duplicate detection event was suppressed these bits were not cleared
causing the CODEC to not enter a low power state. This patch clears the
bits on the duplicate detection code path.

Reported-by: Ryo Tsutsui <ryo.tsutsui@wolfsonmicro.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2013-09-27 09:37:00 +09:00
Chanwoo Choi
d667566754 extcon: arizona: Fix up minor coding style to remove unnecessary braces
This fixes up braces coding style issue by using checkpatch script.

Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 12:03:31 -07:00
Chanwoo Choi
c2275d2fa5 extcon: Fix up 80 column coding style issues
This patch fix 80 column coding sytle issues by using checkpatch script.

Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 12:03:30 -07:00
Mark Brown
df9a5ab463 extcon: arizona: Use power efficient workqueue
None of the delayed work the driver schedules has particularly short delays
and it is not performance sensitive so let the scheduler run it wherever
is most efficient rather than in a per CPU workqueue by using the system
power efficient workqueue.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-08-05 08:53:34 +09:00
Mark Brown
7abd4e2a8f extcon: arizona: Make mic detection timeout configurable
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:07 +01:00
Mark Brown
cd59e79656 extcon: arizona: Allow additional debounce during microphone detection
Help mitigate against mechanical bounce during the initial detection by
allowing the configuration of an additional debounce on top of that the
hardware does during the initial phase of microphone detection operation.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:06 +01:00
Mark Brown
41a57850b5 extcon: arizona: Clear existing button reports before reporting new one
If the user moves directly from one button to another then we won't get a
no buttons pressed event and will therefore end up reporting that two
buttons are simultaneously pressed which isn't supported by the hardware.
Make sure we clear any existing button reports before reporting any new
ones.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:05 +01:00
Mark Brown
939c5671d1 extcon: arizona: Time out if MICDET fails to report
In pathological cases the microphone detection may fail to report, for
example due to a failure to get a stable measurement. Provide a timeout
to cover such cases.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:03 +01:00
Mark Brown
9c2ba270ea extcon: arizona: Simplify HPDET based identification
Rather than measuring both HP channels we can simply directly measure the
microphone impedance and then rely on MICDET for final confirmation of the
presence of a suitable microphone. This improves the overall performance
of the identification process.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:02 +01:00
Mark Brown
db924ff5c7 extcon: arizona: Don't ground flip when using HPDET identification
This extra check makes the procedure take longer and is of marginal use
in identification so do not execute it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:01 +01:00
Mark Brown
9dd5e53d9d extcon: arizona: Retry HPDET identification for high impedance
Sometimes we can trigger measurements early if contacts are shorted during
a slow insertion. As well as debouncing add further robustness by retrying
if we get a high impedance measurement for headphones as this can indicate
that the headphones were not yet connected.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:54:00 +01:00
Mark Brown
2643fd641a extcon: arizona: Tune up HPDET debounce
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:53:58 +01:00
Charles Keepax
e2c0f476ec extcon: arizona: Check we report a valid impedance
Occasionally we can trigger an interrupt before we have completed
impedance measurement, although the valid bit will still be set. This
patch spins reading the impedance value until a valid value is seen.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:53:57 +01:00
Mark Brown
a3e2078d6a extcon: arizona: Suppress duplicate JACKDET reports
In cases where we see a brief (dis)connection of the jack detection signals
we may see a noop jack insertion or removal where the jack has returned to
the original state by the time the interrupt is serviced. Suppress these
events in order to save work and avoid confusing the rest of the code.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:53:56 +01:00
Mark Brown
82e2e0fd3f extcon: arizona: Raise minimum microphone impedance for HPDET method
Ensure greater reliability by increasing the minimum threashold for
identifying a microphone.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:53:55 +01:00
Mark Brown
e56a0a572b extcon: arizona: Allow pull to be disabled on GPIO5 when used for JACKET
In some designs an external pull won't be needed.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:53:54 +01:00
Mark Brown
77ff4f95d7 extcon: arizona: Don't pulse MICBIAS for HPDET identification
There is no need to do this as HPDET identification will cause MICBIAS to
be powered down again.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:53:52 +01:00
Mark Brown
6fed4d869a extcon: arizona: Allow configuration of button detection
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-02 11:53:51 +01:00
Mark Brown
84eaa13616 extcon: arizona: Attempt more microphone measurements
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-01 22:06:39 +01:00
Mark Brown
df8c3dbee9 extcon: arizona: Fix interaction between headphone outputs and identification
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-26 15:45:26 +00:00
Mark Brown
03409071ce extcon: arizona: Factor out magic application
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-26 14:26:03 +00:00
Mark Brown
bf14ee5a46 extcon: arizona: Use MICDET for final microphone identification
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-11 16:06:25 +00:00
Mark Brown
c37b387f07 extcon: arizona: Always take the first HPDET reading as the final one
This should always be the most accurate reading for supported accessory
configurations.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-11 16:06:25 +00:00
Charles Keepax
5d9ab70820 extcon: arizona: Clear _trig_sts bits after jack detection
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: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-11 16:06:23 +00:00
Mark Brown
903aa56fdf extcon: arizona: Don't HPDET magic when headphones are enabled
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-11 16:06:22 +00:00
Mark Brown
0e27bd3137 extcon: arizona: Add some debounce time before starting HPDET identification
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-11 16:06:22 +00:00
Charles Keepax
e339af1c45 extcon: arizona: Remove extra jack flip increment
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-11 16:06:19 +00:00
Mark Brown
bbbd46e3d7 extcon: arizona: Use regulated mode for microphone supply when detecting
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-07 18:19:14 +00:00
Mark Brown
2e033db5dd extcon: arizona: Support additional configuration of microphone detection
Allow systems to tune detection rate and debounce suitably for their
mechanical parameters.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-07 18:04:07 +00:00
Mark Brown
f9365d07dd extcon: arizona: Remove duplicate rate configuration
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-23 09:32:03 +08:00
Mark Brown
e6dd8cf223 extcon: arizona: Retry failed HP measurements
We now have mechanisms in place to allow retries so let's use them rather
than guessing.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-23 09:32:02 +08:00
Mark Brown
4e61687795 extcon: arizona: Disable debouce for accessory removal detection
Ensure we clamp as quickly as possible after removal by disabling the
debounce while there is an accessory present.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-23 09:31:49 +08:00
Mark Brown
1eda6aa7ce extcon: arizona: Support direct microphone measurement via HPDET
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:18 +09:00
Mark Brown
dd235eea4e extcon: arizona: Support HPDET based accessory identification
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:18 +09:00
Mark Brown
9b1270c71f extcon: Simple code motion supporting future work.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:18 +09:00
Mark Brown
4f34033382 extcon: arizona: Enable basic headphone identification
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:17 +09:00
Mark Brown
92a49871b3 extcon: arizona: Support use of GPIO5 as an input to jack detection
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:17 +09:00
Mark Brown
dab63eb25c extcon: arizona: Use microphone clamp function if available
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:17 +09:00
Mark Brown
b17e54625c extcon: arizona: Allow configuration of MICBIAS rise time
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:17 +09:00
Mark Brown
cd74f7b3b3 extcon: arizona: Only set GPIO if it has been requested
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: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:17 +09:00
Mark Brown
db72e6a162 extcon: arizona: Remove duplicate mic ramp configuration
Now this is configured by platform data remove the defualt configuration
the driver had.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:16 +09:00
Mark Brown
3d44ea1cfb extcon: arizona: Convert to devm_input_allocate_device()
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
2013-01-15 15:42:16 +09:00
Greg Kroah-Hartman
962b686c45 extcon pull request targetting Linux 3.8 for Greg KH on 2012.11.22
This is based on Linux 3.7 rc6
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Merge tag 'pull_req_20121122' of git://git.kernel.org/pub/scm/linux/kernel/git/mzx/extcon into char-misc-next

MyungJoo writes:
 "extcon pull request targetting Linux 3.8 for Greg KH on 2012.11.22
  This is based on Linux 3.7 rc6"
2012-11-27 06:44:10 -08:00
Bill Pemberton
5f7e22283c extcon: remove use of __devexit_p
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-26 15:57:24 -08:00
Bill Pemberton
44f34fd4a7 extcon: remove use of __devinit
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-26 15:57:24 -08:00