From f2f5d0f6a2e978ab556589e3aaece3d9272f88f8 Mon Sep 17 00:00:00 2001 From: Erik Gilling Date: Tue, 9 Aug 2011 14:18:21 -0700 Subject: usb: otg: add proxy_wait handler to otg_id Some otg_id handlers can detect what's connected but can't detect a change. This allows that handler to pass off the waiting for ID change to a proxy. Change-Id: Ib38b750c3da4bffc35e37b620ecee37c5d64d31f Signed-off-by: Erik Gilling --- include/linux/usb/otg_id.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/linux/usb/otg_id.h b/include/linux/usb/otg_id.h index b686ab06795..46a44637c11 100644 --- a/include/linux/usb/otg_id.h +++ b/include/linux/usb/otg_id.h @@ -28,6 +28,10 @@ * get called first. * @detect: Called during otg_id_notify. Return OTG_ID_HANDLED if the USB cable * has been identified + * @proxy_wait: Called during otg_id_notify if a previous handler returns + * OTG_ID_PROXY_WAIT. This should wait on ID change then call otg_id_notify. + * This is used when a handler knows what's connected but can't detect + * the change itself. * @cancel: Called after detect has returned OTG_ID_HANDLED to ask it to * release detection resources to allow a new identification to occur. */ @@ -35,10 +39,12 @@ struct otg_id_notifier_block { int priority; int (*detect)(struct otg_id_notifier_block *otg_id_nb); + int (*proxy_wait)(struct otg_id_notifier_block *otg_id_nb); void (*cancel)(struct otg_id_notifier_block *otg_id_nb); struct plist_node p; }; +#define OTG_ID_PROXY_WAIT 2 #define OTG_ID_HANDLED 1 #define OTG_ID_UNHANDLED 0 -- cgit v1.2.3