From e52817faae359ce95c93c2b6eb88b16d4b430181 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Mon, 2 Feb 2015 12:21:59 +0200 Subject: extcon: usb-gpio: Introduce gpio usb extcon driver This driver observes the USB ID pin connected over a GPIO and updates the USB cable extcon states accordingly. The existing GPIO extcon driver is not suitable for this purpose as it needs to be taught to understand USB cable states and it can't handle more than one cable per instance. For the USB case we need to handle 2 cable states. 1) USB (attach/detach) 2) USB-HOST (attach/detach) This driver can be easily updated in the future to handle VBUS events in case it happens to be available on GPIO for any platform. Signed-off-by: Roger Quadros Reviewed-by: Felipe Balbi Acked-by: Felipe Balbi Signed-off-by: Chanwoo Choi --- drivers/extcon/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/extcon/Kconfig') diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig index 6a1f7de..e4c01ab 100644 --- a/drivers/extcon/Kconfig +++ b/drivers/extcon/Kconfig @@ -93,4 +93,11 @@ config EXTCON_SM5502 Silicon Mitus SM5502. The SM5502 is a USB port accessory detector and switch. +config EXTCON_USB_GPIO + tristate "USB GPIO extcon support" + depends on GPIOLIB + help + Say Y here to enable GPIO based USB cable detection extcon support. + Used typically if GPIO is used for USB ID pin detection. + endif # MULTISTATE_SWITCH -- cgit v1.1