[U-Boot] [u-boot 04/40] include: usb: modify gadget.h to include udc support

[Lukasz Majewski <l.majewski@samsung.com>]

Hi Kishon,

> 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>
> ---
>  include/linux/usb/gadget.h |   43
> +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43
> insertions(+)
> 
> diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
> index 9bccd45..1960958 100644
> --- 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 */
> @@ -847,6 +861,35 @@ 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 */
>  

Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>

-- 
Best regards,

Lukasz Majewski

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