[PATCH v4 41/46] usb: gadget: add 'ep_match' callback to usb_gadget_ops
From: Robert Baldyga <hidden>
Date: 2015-07-27 09:22:30
Also in:
linux-arm-kernel, linux-omap, lkml
Subsystem:
the rest, usb subsystem · Maintainers:
Linus Torvalds, Greg Kroah-Hartman
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 <redacted> --- 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 4fa6f5d..1b1fee0 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 c71b1de..6de3688 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 *); }; /**
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1.9.1