usb: gadget: convert all users to the new udc infrastructure

peripheral drivers are using usb_add_gadget()/usb_del_gadget() to
register/unregister to the udc-core.

The udc-core will take the first available gadget driver and attach
function driver which is calling usb_gadget_register_driver(). This is
the same behaviour we have right now.

Only dummy_hcd was tested, the others were compiled tested.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Anton Tikhomirov <av.tikhomirov@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Darius Augulis <augulis.darius@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Pavankumar Kondeti <pkondeti@codeaurora.org>
Cc: Roy Huang <roy.huang@analog.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Cc: Xiaochen Shen <xiaochen.shen@intel.com>
Cc: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Cc: Yuan-Hsin Chen <yhchen@faraday-tech.com>
Cc: cxie4 <cxie4@marvell.com>
Cc: linux-geode@lists.infradead.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 15 insertions, 5 deletions

diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c
index ade40066decf..692fd9b2248b 100644
--- a/drivers/usb/gadget/imx_udc.c
+++ b/drivers/usb/gadget/imx_udc.c
@@ -1237,9 +1237,14 @@ irq_handler_t intr_handler(int i)
  *******************************************************************************
  */
 
+static int imx_udc_start(struct usb_gadget_driver *driver,
+		int (*bind)(struct usb_gadget *));
+static int imx_udc_stop(struct usb_gadget_driver *driver);
 static const struct usb_gadget_ops imx_udc_ops = {
 	.get_frame	 = imx_udc_get_frame,
 	.wakeup		 = imx_udc_wakeup,
+	.start		= imx_udc_start,
+	.stop		= imx_udc_stop,
 };
 
 static struct imx_udc_struct controller = {
@@ -1324,7 +1329,7 @@ static struct imx_udc_struct controller = {
  * USB gadget driver functions
  *******************************************************************************
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int imx_udc_start(struct usb_gadget_driver *driver,
 		int (*bind)(struct usb_gadget *))
 {
 	struct imx_udc_struct *imx_usb = &controller;
@@ -1368,9 +1373,8 @@ fail:
 	imx_usb->gadget.dev.driver = NULL;
 	return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int imx_udc_stop(struct usb_gadget_driver *driver)
 {
 	struct imx_udc_struct *imx_usb = &controller;
 
@@ -1394,7 +1398,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
 	return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /*******************************************************************************
  * Module functions
@@ -1504,8 +1507,14 @@ static int __init imx_udc_probe(struct platform_device *pdev)
 	imx_usb->timer.function = handle_config;
 	imx_usb->timer.data = (unsigned long)imx_usb;
 
-	return 0;
+	ret = usb_add_gadget_udc(&pdev->dev, &imx_usb->gadget);
+	if (ret)
+		goto fail4;
 
+	return 0;
+fail4:
+	for (i = 0; i < IMX_USB_NB_EP + 1; i++)
+		free_irq(imx_usb->usbd_int[i], imx_usb);
 fail3:
 	clk_put(clk);
 	clk_disable(clk);
@@ -1525,6 +1534,7 @@ static int __exit imx_udc_remove(struct platform_device *pdev)
 	struct imxusb_platform_data *pdata = pdev->dev.platform_data;
 	int i;
 
+	usb_del_gadget_udc(&imx_usb->gadget);
 	imx_udc_disable(imx_usb);
 	del_timer(&imx_usb->timer);