include: usb: modify gadget.h to include udc support

Made changes in gadget.h that is required after adding udc-core.c
except changes that might break other platforms.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>

diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 9bccd451afba1d40ed3cac898e8e32bbc286fdc1..196095885381b409c6dd358a4c3f772b37416aac 100644 (file)
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -396,6 +396,7 @@ static inline void usb_ep_fifo_flush(struct usb_ep *ep)
 /*-------------------------------------------------------------------------*/
 
 struct usb_gadget;
+struct usb_gadget_driver;
 
 /* the rest of the api to the controller hardware: device operations,
  * which don't involve endpoints (or i/o).
@@ -409,6 +410,9 @@ struct usb_gadget_ops {
        int     (*pullup) (struct usb_gadget *, int is_on);
        int     (*ioctl)(struct usb_gadget *,
                                unsigned code, unsigned long param);
+       int     (*udc_start)(struct usb_gadget *,
+                            struct usb_gadget_driver *);
+       int     (*udc_stop)(struct usb_gadget *);
 };
 
 /**
@@ -459,6 +463,7 @@ struct usb_gadget {
        struct usb_ep                   *ep0;
        struct list_head                ep_list;        /* of usb_ep */
        enum usb_device_speed           speed;
+       enum usb_device_state           state;
        unsigned                        is_dualspeed:1;
        unsigned                        is_otg:1;
        unsigned                        is_a_peripheral:1;
@@ -686,6 +691,7 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
 
 /**
  * struct usb_gadget_driver - driver for usb 'slave' devices
+ * @function: String describing the gadget's function
  * @speed: Highest speed the driver handles.
  * @bind: Invoked when the driver is bound to a gadget, usually
  *     after registering the driver.
@@ -707,6 +713,8 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
  *     Called in a context that permits sleeping.
  * @suspend: Invoked on USB suspend.  May be called in_interrupt.
  * @resume: Invoked on USB resume.  May be called in_interrupt.
+ * @reset: Invoked on USB bus reset. It is mandatory for all gadget drivers
+ *     and should be called in_interrupt.
  *
  * Devices are disabled till a gadget driver successfully bind()s, which
  * means the driver will handle setup() requests needed to enumerate (and
@@ -753,6 +761,7 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
  * power is maintained.
  */
 struct usb_gadget_driver {
+       char                    *function;
        enum usb_device_speed   speed;
        int                     (*bind)(struct usb_gadget *);
        void                    (*unbind)(struct usb_gadget *);
@@ -761,6 +770,7 @@ struct usb_gadget_driver {
        void                    (*disconnect)(struct usb_gadget *);
        void                    (*suspend)(struct usb_gadget *);
        void                    (*resume)(struct usb_gadget *);
+       void                    (*reset)(struct usb_gadget *);
 };
 
 
@@ -801,6 +811,10 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver);
  */
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver);
 
+int usb_add_gadget_udc_release(struct device *parent,
+               struct usb_gadget *gadget, void (*release)(struct device *dev));
+int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget);
+void usb_del_gadget_udc(struct usb_gadget *gadget);
 /*-------------------------------------------------------------------------*/
 
 /* utility to simplify dealing with string descriptors */
@@ -846,6 +860,35 @@ int usb_descriptor_fillbuf(void *, unsigned,
 int usb_gadget_config_buf(const struct usb_config_descriptor *config,
        void *buf, unsigned buflen, const struct usb_descriptor_header **desc);
 
+/*-------------------------------------------------------------------------*/
+/* utility to simplify map/unmap of usb_requests to/from DMA */
+
+extern int usb_gadget_map_request(struct usb_gadget *gadget,
+                                 struct usb_request *req, int is_in);
+
+extern void usb_gadget_unmap_request(struct usb_gadget *gadget,
+                                    struct usb_request *req, int is_in);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility to set gadget state properly */
+
+extern void usb_gadget_set_state(struct usb_gadget *gadget,
+                                enum usb_device_state state);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility to tell udc core that the bus reset occurs */
+extern void usb_gadget_udc_reset(struct usb_gadget *gadget,
+                                struct usb_gadget_driver *driver);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility to give requests back to the gadget layer */
+
+extern void usb_gadget_giveback_request(struct usb_ep *ep,
+                                       struct usb_request *req);
+
 /*-------------------------------------------------------------------------*/
 
 /* utility wrapping a simple endpoint selection policy */