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, 29 insertions, 14 deletions

diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
index baaf87ed7685..909bc45c0be0 100644
--- a/drivers/usb/gadget/ci13xxx_udc.c
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -857,7 +857,7 @@ static void dbg_print(u8 addr, const char *name, int status, const char *extra)
         stamp = stamp * 1000000 + tval.tv_usec;
 
         scnprintf(dbg_data.buf[dbg_data.idx], DBG_DATA_MSG,
-                  "%04X\t» %02X %-7.7s %4i «\t%s\n",
+                  "%04X\t? %02X %-7.7s %4i ?\t%s\n",
                   stamp, addr, name, status, extra);
 
         dbg_inc(&dbg_data.idx);
@@ -865,7 +865,7 @@ static void dbg_print(u8 addr, const char *name, int status, const char *extra)
         write_unlock_irqrestore(&dbg_data.lck, flags);
 
         if (dbg_data.tty != 0)
-                pr_notice("%04X\t» %02X %-7.7s %4i «\t%s\n",
+                pr_notice("%04X\t? %02X %-7.7s %4i ?\t%s\n",
                           stamp, addr, name, status, extra);
 }
 
@@ -1025,15 +1025,15 @@ static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
 
         n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n",
                        isr_statistics.test);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» ui  = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? ui  = %d\n",
                        isr_statistics.ui);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» uei = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? uei = %d\n",
                        isr_statistics.uei);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» pci = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? pci = %d\n",
                        isr_statistics.pci);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» uri = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? uri = %d\n",
                        isr_statistics.uri);
-        n += scnprintf(buf + n, PAGE_SIZE - n, "» sli = %d\n",
+        n += scnprintf(buf + n, PAGE_SIZE - n, "? sli = %d\n",
                        isr_statistics.sli);
         n += scnprintf(buf + n, PAGE_SIZE - n, "*none = %d\n",
                        isr_statistics.none);
@@ -2515,6 +2515,9 @@ static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
         return -ENOTSUPP;
 }
 
+static int ci13xxx_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int ci13xxx_stop(struct usb_gadget_driver *driver);
 /**
  * Device operations part of the API to the USB controller hardware,
  * which don't involve endpoints (or i/o)
@@ -2524,17 +2527,19 @@ static const struct usb_gadget_ops usb_gadget_ops = {
         .vbus_session   = ci13xxx_vbus_session,
         .wakeup         = ci13xxx_wakeup,
         .vbus_draw      = ci13xxx_vbus_draw,
+        .start          = ci13xxx_start,
+        .stop           = ci13xxx_stop,
 };
 
 /**
- * usb_gadget_probe_driver: register a gadget driver
+ * ci13xxx_start: register a gadget driver
  * @driver: the driver being registered
  * @bind: the driver's bind callback
  *
- * Check usb_gadget_probe_driver() at <linux/usb/gadget.h> for details.
+ * Check ci13xxx_start() at <linux/usb/gadget.h> for details.
  * Interrupts are enabled here.
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int ci13xxx_start(struct usb_gadget_driver *driver,
                 int (*bind)(struct usb_gadget *))
 {
         struct ci13xxx *udc = _udc;
@@ -2657,14 +2662,13 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
         spin_unlock_irqrestore(udc->lock, flags);
         return retval;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 /**
- * usb_gadget_unregister_driver: unregister a gadget driver
+ * ci13xxx_stop: unregister a gadget driver
  *
  * Check usb_gadget_unregister_driver() at "usb_gadget.h" for details
  */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int ci13xxx_stop(struct usb_gadget_driver *driver)
 {
         struct ci13xxx *udc = _udc;
         unsigned long i, flags;
@@ -2726,7 +2730,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /******************************************************************************
  * BUS block
@@ -2901,12 +2904,23 @@ static int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
                 if (retval)
                         goto remove_dbg;
         }
+
+        retval = usb_add_gadget_udc(dev, &udc->gadget);
+        if (retval)
+                goto remove_trans;
+
         pm_runtime_no_callbacks(&udc->gadget.dev);
         pm_runtime_enable(&udc->gadget.dev);
 
         _udc = udc;
         return retval;
 
+remove_trans:
+        if (udc->transceiver) {
+                otg_set_peripheral(udc->transceiver, &udc->gadget);
+                otg_put_transceiver(udc->transceiver);
+        }
+
         err("error = %i", retval);
 remove_dbg:
 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
@@ -2936,6 +2950,7 @@ static void udc_remove(void)
                 err("EINVAL");
                 return;
         }
+        usb_del_gadget_udc(&udc->gadget);
 
         if (udc->transceiver) {
                 otg_set_peripheral(udc->transceiver, &udc->gadget);