usb: dwc3: gadget: make dwc3 gadget build in uboot

Did a bunch of things to get dwc3/gadget.c compile in u-boot without
build errors and warnings
*) Changed the included header files to that used in u-boot.
*) Used dma_alloc_coherent and dma_free_coherent APIs of u-boot
*) removed sg support
*) remove jiffies and used a simple while loop
*) removed irq support and added a function to call these interrupt handler.

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

1 files changed, 39 insertions, 0 deletions

diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 1960958853..93a5ffc4f4 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -31,6 +31,7 @@ struct usb_ep;
  * @dma: DMA address corresponding to 'buf'.  If you don't set this
  *	field, and the usb controller needs one, it is responsible
  *	for mapping and unmapping the buffer.
+ * @stream_id: The stream id, when USB3.0 bulk streams are being used
  * @length: Length of that data
  * @no_interrupt: If true, hints that no completion irq is needed.
  *	Helpful sometimes with deep request queues that are handled
@@ -85,6 +86,7 @@ struct usb_request {
 	unsigned		length;
 	dma_addr_t		dma;
 
+	unsigned		stream_id:16;
 	unsigned		no_interrupt:1;
 	unsigned		zero:1;
 	unsigned		short_not_ok:1;
@@ -121,6 +123,7 @@ struct usb_ep_ops {
 	int (*dequeue) (struct usb_ep *ep, struct usb_request *req);
 
 	int (*set_halt) (struct usb_ep *ep, int value);
+	int (*set_wedge)(struct usb_ep *ep);
 	int (*fifo_status) (struct usb_ep *ep);
 	void (*fifo_flush) (struct usb_ep *ep);
 };
@@ -133,8 +136,18 @@ struct usb_ep_ops {
  * @maxpacket:The maximum packet size used on this endpoint.  The initial
  *	value can sometimes be reduced (hardware allowing), according to
  *      the endpoint descriptor used to configure the endpoint.
+ * @maxpacket_limit:The maximum packet size value which can be handled by this
+ *	endpoint. It's set once by UDC driver when endpoint is initialized, and
+ *	should not be changed. Should not be confused with maxpacket.
+ * @max_streams: The maximum number of streams supported
+ * 	by this EP (0 - 16, actual number is 2^n)
+ * @maxburst: the maximum number of bursts supported by this EP (for usb3)
  * @driver_data:for use by the gadget driver.  all other fields are
  *	read-only to gadget drivers.
+ * @desc: endpoint descriptor.  This pointer is set before the endpoint is
+ * 	enabled and remains valid until the endpoint is disabled.
+ * @comp_desc: In case of SuperSpeed support, this is the endpoint companion
+ * 	descriptor that is used to configure the endpoint
  *
  * the bus controller driver lists all the general purpose endpoints in
  * gadget->ep_list.  the control endpoint (gadget->ep0) is not in that list,
@@ -146,11 +159,31 @@ struct usb_ep {
 	const struct usb_ep_ops	*ops;
 	struct list_head	ep_list;
 	unsigned		maxpacket:16;
+	unsigned		maxpacket_limit:16;
+	unsigned		max_streams:16;
+	unsigned		maxburst:5;
+	const struct usb_endpoint_descriptor	*desc;
+	const struct usb_ss_ep_comp_descriptor	*comp_desc;
 };
 
 /*-------------------------------------------------------------------------*/
 
 /**
+ * usb_ep_set_maxpacket_limit - set maximum packet size limit for endpoint
+ * @ep:the endpoint being configured
+ * @maxpacket_limit:value of maximum packet size limit
+ *
+ * This function shoud be used only in UDC drivers to initialize endpoint
+ * (usually in probe function).
+ */
+static inline void usb_ep_set_maxpacket_limit(struct usb_ep *ep,
+					      unsigned maxpacket_limit)
+{
+	ep->maxpacket_limit = maxpacket_limit;
+	ep->maxpacket = maxpacket_limit;
+}
+
+/**
  * usb_ep_enable - configure endpoint, making it usable
  * @ep:the endpoint being configured.  may not be the endpoint named "ep0".
  *	drivers discover endpoints through the ep_list of a usb_gadget.
@@ -422,6 +455,8 @@ struct usb_gadget_ops {
  *	driver setup() requests
  * @ep_list: List of other endpoints supported by the device.
  * @speed: Speed of current connection to USB host.
+ * @max_speed: Maximal speed the UDC can handle.  UDC must support this
+ *      and all slower speeds.
  * @is_dualspeed: true if the controller supports both high and full speed
  *	operation.  If it does, the gadget driver must also support both.
  * @is_otg: true if the USB device port uses a Mini-AB jack, so that the
@@ -438,6 +473,8 @@ struct usb_gadget_ops {
  * @name: Identifies the controller hardware type.  Used in diagnostics
  *	and sometimes configuration.
  * @dev: Driver model state for this abstract device.
+ * @quirk_ep_out_aligned_size: epout requires buffer size to be aligned to
+ *	MaxPacketSize.
  *
  * Gadgets have a mostly-portable "gadget driver" implementing device
  * functions, handling all usb configurations and interfaces.  Gadget
@@ -463,6 +500,7 @@ struct usb_gadget {
 	struct usb_ep			*ep0;
 	struct list_head		ep_list;	/* of usb_ep */
 	enum usb_device_speed		speed;
+	enum usb_device_speed		max_speed;
 	enum usb_device_state		state;
 	unsigned			is_dualspeed:1;
 	unsigned			is_otg:1;
@@ -472,6 +510,7 @@ struct usb_gadget {
 	unsigned			a_alt_hnp_support:1;
 	const char			*name;
 	struct device			dev;
+	unsigned			quirk_ep_out_aligned_size:1;
 };
 
 static inline void set_gadget_data(struct usb_gadget *gadget, void *data)