linux-kernel - [PATCH v2 47/48] usb: musb: gadget: add musb_match

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Message-id: <1436866776-5004-48-git-send-email-r.baldyga@samsung.com>
Date:	Tue, 14 Jul 2015 11:39:35 +0200
From:	Robert Baldyga <r.baldyga@...sung.com>
To:	gregkh@...uxfoundation.org, balbi@...com
Cc:	Peter.Chen@...escale.com, johnyoun@...opsys.com,
	dahlmann.thomas@...or.de, nicolas.ferre@...el.com,
	cernekee@...il.com, leoli@...escale.com, daniel@...que.org,
	haojian.zhuang@...il.com, robert.jarzmik@...e.fr,
	michal.simek@...inx.com, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-geode@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linuxppc-dev@...ts.ozlabs.org, andrzej.p@...sung.com,
	m.szyprowski@...sung.com, Robert Baldyga <r.baldyga@...sung.com>
Subject: [PATCH v2 47/48] usb: musb: gadget: add musb_match_ep() function

Add 'match_ep' callback to utilize chip-specific knowledge in endpoint matching
process. Functions does the same that was done by chip-specific code inside
of epautoconf. Now this code can be removed from there to separate generic code
from platform specific logic.

Signed-off-by: Robert Baldyga <r.baldyga@...sung.com>
---
 drivers/usb/gadget/epautoconf.c | 23 ---------------------
 drivers/usb/musb/musb_gadget.c  | 44 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 23 deletions(-)

diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index 038b21d..e9a8682 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -95,29 +95,6 @@ struct usb_ep *usb_ep_autoconfig_ss(
 			goto found_ep;
 	}
 
-	/* First, apply chip-specific "best usage" knowledge.
-	 * This might make a good usb_gadget_ops hook ...
-	 */
-#ifdef CONFIG_BLACKFIN
-	if (gadget_is_musbhdrc(gadget)) {
-		if ((USB_ENDPOINT_XFER_BULK == type) ||
-		    (USB_ENDPOINT_XFER_ISOC == type)) {
-			if (USB_DIR_IN & desc->bEndpointAddress)
-				ep = find_ep (gadget, "ep5in");
-			else
-				ep = find_ep (gadget, "ep6out");
-		} else if (USB_ENDPOINT_XFER_INT == type) {
-			if (USB_DIR_IN & desc->bEndpointAddress)
-				ep = find_ep(gadget, "ep1in");
-			else
-				ep = find_ep(gadget, "ep2out");
-		} else
-			ep = NULL;
-		if (ep && usb_gadget_ep_match_desc(gadget, ep, desc, ep_comp))
-			goto found_ep;
-	}
-#endif
-
 	/* Second, look at endpoints until an unclaimed one looks usable */
 	list_for_each_entry (ep, &gadget->ep_list, ep_list) {
 		if (usb_gadget_ep_match_desc(gadget, ep, desc, ep_comp))
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 043248a..5f1eb35 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -1684,6 +1684,49 @@ static int musb_gadget_pullup(struct usb_gadget *gadget, int is_on)
 	return 0;
 }
 
+#ifdef CONFIG_BLACKFIN
+static struct usb_ep *musb_find_ep(struct usb_gadget *g,
+		const char *name)
+{
+	struct usb_ep *ep;
+
+	list_for_each_entry(ep, &g->ep_list, ep_list) {
+		if (0 == strcmp(ep->name, name))
+			return ep;
+	}
+
+	return NULL;
+}
+
+static struct usb_ep *match_match_ep(struct usb_gadget *g,
+		struct usb_endpoint_descriptor *desc,
+		struct usb_ss_ep_comp_descriptor *ep_comp)
+{
+	struct usb_ep *ep = NULL;
+	u8 type = usb_endpoint_type(desc);
+
+	if ((USB_ENDPOINT_XFER_BULK == type) ||
+			(USB_ENDPOINT_XFER_ISOC == type)) {
+		if (USB_DIR_IN & desc->bEndpointAddress)
+			ep = musb_find_ep(g, "ep5in");
+		else
+			ep = musb_find_ep(g, "ep6out");
+	} else if (USB_ENDPOINT_XFER_INT == type) {
+		if (USB_DIR_IN & desc->bEndpointAddress)
+			ep = musb_find_ep(g, "ep1in");
+		else
+			ep = musb_find_ep(g, "ep2out");
+	}
+
+	if (ep && usb_gadget_ep_match_desc(g, ep, desc, ep_comp))
+		return ep;
+
+	return NULL;
+}
+#else
+#define musb_match_ep NULL
+#endif
+
 static int musb_gadget_start(struct usb_gadget *g,
 		struct usb_gadget_driver *driver);
 static int musb_gadget_stop(struct usb_gadget *g);
@@ -1697,6 +1740,7 @@ static const struct usb_gadget_ops musb_gadget_operations = {
 	.pullup			= musb_gadget_pullup,
 	.udc_start		= musb_gadget_start,
 	.udc_stop		= musb_gadget_stop,
+	.match_ep		= musb_match_ep,
 };
 
 /* ----------------------------------------------------------------------- */
-- 
1.9.1

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