From 596c154d62330ea0bb4e3c3e50afa3682e50b617 Mon Sep 17 00:00:00 2001 From: Robert Baldyga Date: Thu, 6 Aug 2015 14:11:10 +0200 Subject: [PATCH] usb: gadget: add 'ep_match' callback to usb_gadget_ops Add callback that is called by epautoconf to allow UDC driver match the best endpoint for specific descriptor. It's intended to supply mechanism which allows to get rid of chip-specific endpoint matching code from epautoconf. If gadget has set 'ep_match' callback we prefer to call it first, and if it fails to find matching endpoint, then we try to use default matching algorithm. Signed-off-by: Robert Baldyga Signed-off-by: Felipe Balbi --- drivers/usb/gadget/epautoconf.c | 6 ++++++ include/linux/usb/gadget.h | 3 +++ 2 files changed, 9 insertions(+) diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index 95e1275..f000c73 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -165,6 +165,12 @@ struct usb_ep *usb_ep_autoconfig_ss( type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + if (gadget->ops->match_ep) { + ep = gadget->ops->match_ep(gadget, desc, ep_comp); + if (ep) + goto found_ep; + } + /* First, apply chip-specific "best usage" knowledge. * This might make a good usb_gadget_ops hook ... */ diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 82b5bcb..303214b 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -534,6 +534,9 @@ struct usb_gadget_ops { int (*udc_start)(struct usb_gadget *, struct usb_gadget_driver *); int (*udc_stop)(struct usb_gadget *); + struct usb_ep *(*match_ep)(struct usb_gadget *, + struct usb_endpoint_descriptor *, + struct usb_ss_ep_comp_descriptor *); }; /** -- 2.7.4