diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-01-11 03:55:54 +0400 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2013-01-15 10:42:18 +0400 |
| commit | 1eda6aa7ce101b59dfd91abef2c8b0e51e96e199 (patch) | |
| tree | 9dd5a408d0e5d2df0b8ff1c397cbc92cc86a2539 /include | |
| parent | dd235eea4ed75b1599dd9a53bb618fe5befeb731 (diff) | |
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mfd/arizona/pdata.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 7c0878778357..bcbe4fda87cb 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -102,6 +102,9 @@ struct arizona_pdata { /** Use the headphone detect circuit to identify the accessory */ bool hpdet_acc_id; + /** GPIO used for mic isolation with HPDET */ + int hpdet_id_gpio; + /** GPIO for mic detection polarity */ int micd_pol_gpio; |