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[PATCH v3 41/46] usb: gadget: add 'ep_match' callback to usb_gadget_ops

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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 <r.baldyga@samsung.com>
---
 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 e6cbc25..0041bb9 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 *);
 };
 
 /**
-- 
1.9.1

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[PATCH v3 00/46] usb: gadget: rework ep matching and claiming mechanism Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 21/46] usb: gadget: mv_u3d_core: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 33/46] usb: isp1760: udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 01/46] usb: gadget: encapsulate endpoint claiming mechanism Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 11/46] usb: gadget: bdc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 19/46] usb: gadget: lpc32xx_udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 37/46] usb: gadget: epautoconf: add endpoint capabilities  flags verification Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 25/46] usb: gadget: omap_udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 06/46] usb: dwc2: gadget: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 46/46] usb: musb: gadget: add musb_match_ep() function Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 24/46] usb: gadget: net2280: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:40 +0200
  [PATCH v3 10/46] usb: gadget: bcm63xx_udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 29/46] usb: gadget: r8a66597-udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 41/46] usb: gadget: add 'ep_match' callback to usb_gadget_ops Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 23/46] usb: gadget: net2272: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 17/46] usb: gadget: goku_udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 08/46] usb: gadget: amd5536udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 35/46] usb: renesas: gadget: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 40/46] usb: gadget: epautoconf: rework ep_matches() function Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 27/46] usb: gadget: pxa25x_udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 18/46] usb: gadget: gr_udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 43/46] usb: gadget: move find_ep() from epautoconf to  gadget.h Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 14/46] usb: gadget: fsl_qe_udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200
  [PATCH v3 20/46] usb: gadget: m66592-udc: add ep capabilities support Robert Baldyga <r.baldyga@samsung.com> - 2015-07-15 08:50 +0200

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