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Extcon: Arizona: Add driver for Wolfson Arizona class devices

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Most Wolfson Arizona class audio hub CODECs include a flexible ultra low
power accessory detection subsystem. This driver exposes initial support
for this subsystem via the Extcon framework, implementing support for
ultra low power detection of headphone and headset with the ability to
detect the polarity of a headset.

The functionality of the devices is much richer and more flexible than
the current driver, future patches will extend the features of the
driver to more fully exploit this.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mark Brown
2012-06-24 12:09:45 +01:00
committed by Greg Kroah-Hartman
parent df6b3cfe20
commit f2c32a882d
3 changed files with 500 additions and 0 deletions
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8
drivers/extcon/Kconfig
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@@ -29,4 +29,12 @@ config EXTCON_MAX8997
Maxim MAX8997 PMIC. The MAX8997 MUIC is a USB port accessory
detector and switch.
config EXTCON_ARIZONA
tristate "Wolfson Arizona EXTCON support"
depends on MFD_ARIZONA
help
Say Y here to enable support for external accessory detection
with Wolfson Arizona devices. These are audio CODECs with
advanced audio accessory detection support.
endif # MULTISTATE_SWITCH