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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>
41 lines
1.3 KiB
Plaintext
41 lines
1.3 KiB
Plaintext
menuconfig EXTCON
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tristate "External Connector Class (extcon) support"
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help
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Say Y here to enable external connector class (extcon) support.
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This allows monitoring external connectors by userspace
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via sysfs and uevent and supports external connectors with
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multiple states; i.e., an extcon that may have multiple
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cables attached. For example, an external connector of a device
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may be used to connect an HDMI cable and a AC adaptor, and to
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host USB ports. Many of 30-pin connectors including PDMI are
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also good examples.
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if EXTCON
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comment "Extcon Device Drivers"
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config EXTCON_GPIO
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tristate "GPIO extcon support"
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depends on GENERIC_GPIO
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help
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Say Y here to enable GPIO based extcon support. Note that GPIO
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extcon supports single state per extcon instance.
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config EXTCON_MAX8997
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tristate "MAX8997 EXTCON Support"
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depends on MFD_MAX8997
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help
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If you say yes here you get support for the MUIC device of
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Maxim MAX8997 PMIC. The MAX8997 MUIC is a USB port accessory
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detector and switch.
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config EXTCON_ARIZONA
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tristate "Wolfson Arizona EXTCON support"
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depends on MFD_ARIZONA
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help
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Say Y here to enable support for external accessory detection
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with Wolfson Arizona devices. These are audio CODECs with
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advanced audio accessory detection support.
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endif # MULTISTATE_SWITCH
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