1 files changed, 343 insertions, 703 deletions

diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index 547486ccd05..458f3766bef 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -14,6 +14,8 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  *
  */
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -26,21 +28,18 @@
  */
 struct usbhsg_request {
 	struct usb_request	req;
-	struct list_head	node;
+	struct usbhs_pkt	pkt;
 };
 
 #define EP_NAME_SIZE 8
 struct usbhsg_gpriv;
-struct usbhsg_pipe_handle;
 struct usbhsg_uep {
 	struct usb_ep		 ep;
 	struct usbhs_pipe	*pipe;
-	struct list_head	 list;
 
 	char ep_name[EP_NAME_SIZE];
 
 	struct usbhsg_gpriv *gpriv;
-	struct usbhsg_pipe_handle *handler;
 };
 
 struct usbhsg_gpriv {
@@ -56,12 +55,7 @@ struct usbhsg_gpriv {
 #define USBHSG_STATUS_STARTED		(1 << 0)
 #define USBHSG_STATUS_REGISTERD		(1 << 1)
 #define USBHSG_STATUS_WEDGE		(1 << 2)
-};
-
-struct usbhsg_pipe_handle {
-	int (*prepare)(struct usbhsg_uep *uep, struct usbhsg_request *ureq);
-	int (*try_run)(struct usbhsg_uep *uep, struct usbhsg_request *ureq);
-	void (*irq_mask)(struct usbhsg_uep *uep, int enable);
+#define USBHSG_STATUS_SELF_POWERED	(1 << 3)
 };
 
 struct usbhsg_recip_handle {
@@ -83,9 +77,9 @@ struct usbhsg_recip_handle {
 		struct usbhsg_gpriv, mod)
 
 #define __usbhsg_for_each_uep(start, pos, g, i)	\
-	for (i = start, pos = (g)->uep;		\
-	     i < (g)->uep_size;			\
-	     i++, pos = (g)->uep + i)
+	for ((i) = start;					\
+	     ((i) < (g)->uep_size) && ((pos) = (g)->uep + (i));	\
+	     (i)++)
 
 #define usbhsg_for_each_uep(pos, gpriv, i)	\
 	__usbhsg_for_each_uep(1, pos, gpriv, i)
@@ -100,7 +94,6 @@ struct usbhsg_recip_handle {
 	container_of(r, struct usbhsg_request, req)
 
 #define usbhsg_ep_to_uep(e)		container_of(e, struct usbhsg_uep, ep)
-#define usbhsg_gpriv_to_lock(gp)	usbhs_priv_to_lock((gp)->mod.priv)
 #define usbhsg_gpriv_to_dev(gp)		usbhs_priv_to_dev((gp)->mod.priv)
 #define usbhsg_gpriv_to_priv(gp)	((gp)->mod.priv)
 #define usbhsg_gpriv_to_dcp(gp)		((gp)->uep)
@@ -110,6 +103,10 @@ struct usbhsg_recip_handle {
 #define usbhsg_pipe_to_uep(p)		((p)->mod_private)
 #define usbhsg_is_dcp(u)		((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
 
+#define usbhsg_ureq_to_pkt(u)		(&(u)->pkt)
+#define usbhsg_pkt_to_ureq(i)	\
+	container_of(i, struct usbhsg_request, pkt)
+
 #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
 
 /* status */
@@ -119,450 +116,267 @@ struct usbhsg_recip_handle {
 #define usbhsg_status_has(gp, b) (gp->status &   b)
 
 /*
- *		usbhsg_trylock
- *
- * This driver don't use spin_try_lock
- * to avoid warning of CONFIG_DEBUG_SPINLOCK
+ *		queue push/pop
  */
-static spinlock_t *usbhsg_trylock(struct usbhsg_gpriv *gpriv,
-				  unsigned long *flags)
+static void usbhsg_queue_pop(struct usbhsg_uep *uep,
+			     struct usbhsg_request *ureq,
+			     int status)
 {
-	spinlock_t *lock = usbhsg_gpriv_to_lock(gpriv);
-
-	/* check spin lock status
-	 * to avoid deadlock/nest */
-	if (spin_is_locked(lock))
-		return NULL;
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
 
-	spin_lock_irqsave(lock, *flags);
+	dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
 
-	return lock;
+	ureq->req.status = status;
+	ureq->req.complete(&uep->ep, &ureq->req);
 }
 
-static void usbhsg_unlock(spinlock_t *lock, unsigned long *flags)
+static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
 {
-	if (!lock)
-		return;
+	struct usbhs_pipe *pipe = pkt->pipe;
+	struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
+	struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
 
-	spin_unlock_irqrestore(lock, *flags);
+	ureq->req.actual = pkt->actual;
+
+	usbhsg_queue_pop(uep, ureq, 0);
 }
 
-/*
- *		list push/pop
- */
 static void usbhsg_queue_push(struct usbhsg_uep *uep,
 			      struct usbhsg_request *ureq)
 {
 	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
 	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
 	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
+	struct usb_request *req = &ureq->req;
 
-	/*
-	 *********  assume under spin lock  *********
-	 */
-	list_del_init(&ureq->node);
-	list_add_tail(&ureq->node, &uep->list);
-	ureq->req.actual = 0;
-	ureq->req.status = -EINPROGRESS;
+	req->actual = 0;
+	req->status = -EINPROGRESS;
+	usbhs_pkt_push(pipe, pkt, usbhsg_queue_done,
+		       req->buf, req->length, req->zero, -1);
+	usbhs_pkt_start(pipe);
 
 	dev_dbg(dev, "pipe %d : queue push (%d)\n",
 		usbhs_pipe_number(pipe),
-		ureq->req.length);
+		req->length);
 }
 
-static struct usbhsg_request *usbhsg_queue_get(struct usbhsg_uep *uep)
-{
-	/*
-	 *********  assume under spin lock  *********
-	 */
-	if (list_empty(&uep->list))
-		return NULL;
-
-	return list_entry(uep->list.next, struct usbhsg_request, node);
-}
-
-#define usbhsg_queue_prepare(uep) __usbhsg_queue_handler(uep, 1);
-#define usbhsg_queue_handle(uep)  __usbhsg_queue_handler(uep, 0);
-static int __usbhsg_queue_handler(struct usbhsg_uep *uep, int prepare)
+/*
+ *		dma map/unmap
+ */
+static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
 {
+	struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
+	struct usb_request *req = &ureq->req;
+	struct usbhs_pipe *pipe = pkt->pipe;
+	struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
 	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
-	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-	struct usbhsg_request *ureq;
-	spinlock_t *lock;
-	unsigned long flags;
+	enum dma_data_direction dir;
 	int ret = 0;
 
-	if (!uep->handler) {
-		dev_err(dev, "no handler function\n");
-		return -EIO;
-	}
+	dir = usbhs_pipe_is_dir_host(pipe);
 
-	/*
-	 * CAUTION [*queue handler*]
-	 *
-	 * This function will be called for start/restart queue operation.
-	 * OTOH the most much worry for USB driver is spinlock nest.
-	 * Specially it are
-	 *   - usb_ep_ops  :: queue
-	 *   - usb_request :: complete
-	 *
-	 * But the caller of this function need not care about spinlock.
-	 * This function is using usbhsg_trylock for it.
-	 * if "is_locked" is 1, this mean this function lock it.
-	 * but if it is 0, this mean it is already under spin lock.
-	 * see also
-	 *   CAUTION [*endpoint queue*]
-	 *   CAUTION [*request complete*]
-	 */
+	if (map) {
+		/* it can not use scatter/gather */
+		WARN_ON(req->num_sgs);
 
-	/******************  spin try lock *******************/
-	lock = usbhsg_trylock(gpriv, &flags);
+		ret = usb_gadget_map_request(&gpriv->gadget, req, dir);
+		if (ret < 0)
+			return ret;
 
-	ureq = usbhsg_queue_get(uep);
-	if (ureq) {
-		if (prepare)
-			ret = uep->handler->prepare(uep, ureq);
-		else
-			ret = uep->handler->try_run(uep, ureq);
+		pkt->dma = req->dma;
+	} else {
+		usb_gadget_unmap_request(&gpriv->gadget, req, dir);
 	}
-	usbhsg_unlock(lock, &flags);
-	/********************  spin unlock ******************/
 
 	return ret;
 }
 
-static void usbhsg_queue_pop(struct usbhsg_uep *uep,
-			     struct usbhsg_request *ureq,
-			     int status)
-{
-	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
-	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-
-	/*
-	 *********  assume under spin lock  *********
-	 */
-
-	/*
-	 * CAUTION [*request complete*]
-	 *
-	 * There is a possibility not to be called in correct order
-	 * if "complete" is called without spinlock.
-	 *
-	 * So, this function assume it is under spinlock,
-	 * and call usb_request :: complete.
-	 *
-	 * But this "complete" will push next usb_request.
-	 * It mean "usb_ep_ops :: queue" which is using spinlock is called
-	 * under spinlock.
-	 *
-	 * To avoid dead-lock, this driver is using usbhsg_trylock.
-	 *   CAUTION [*endpoint queue*]
-	 *   CAUTION [*queue handler*]
-	 */
-
-	dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
-
-	list_del_init(&ureq->node);
-
-	ureq->req.status = status;
-	ureq->req.complete(&uep->ep, &ureq->req);
-
-	/* more request ? */
-	if (0 == status)
-		usbhsg_queue_prepare(uep);
-}
-
 /*
- *		irq enable/disable function
- */
-#define usbhsg_irq_callback_ctrl(uep, status, enable)			\
-	({								\
-		struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);	\
-		struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);	\
-		struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);	\
-		struct usbhs_mod *mod = usbhs_mod_get_current(priv);	\
-		if (!mod)						\
-			return;						\
-		if (enable)						\
-			mod->irq_##status |= (1 << usbhs_pipe_number(pipe)); \
-		else							\
-			mod->irq_##status &= ~(1 << usbhs_pipe_number(pipe)); \
-		usbhs_irq_callback_update(priv, mod);			\
-	})
-
-static void usbhsg_irq_empty_ctrl(struct usbhsg_uep *uep, int enable)
-{
-	usbhsg_irq_callback_ctrl(uep, bempsts, enable);
-}
-
-static void usbhsg_irq_ready_ctrl(struct usbhsg_uep *uep, int enable)
-{
-	usbhsg_irq_callback_ctrl(uep, brdysts, enable);
-}
-
-/*
- *		handler function
+ *		USB_TYPE_STANDARD / clear feature functions
  */
-static int usbhsg_try_run_ctrl_stage_end(struct usbhsg_uep *uep,
-					 struct usbhsg_request *ureq)
+static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
+						 struct usbhsg_uep *uep,
+						 struct usb_ctrlrequest *ctrl)
 {
-	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-
-	/*
-	 *********  assume under spin lock  *********
-	 */
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
 
 	usbhs_dcp_control_transfer_done(pipe);
-	usbhsg_queue_pop(uep, ureq, 0);
 
 	return 0;
 }
 
-static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep,
-				      struct usbhsg_request *ureq)
+static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
+						   struct usbhsg_uep *uep,
+						   struct usb_ctrlrequest *ctrl)
 {
-	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-	struct usb_request *req = &ureq->req;
 	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
-	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-	void *buf;
-	int remainder, send;
-	int is_done = 0;
-	int enable;
-	int maxp;
-
-	/*
-	 *********  assume under spin lock  *********
-	 */
-
-	maxp		= usbhs_pipe_get_maxpacket(pipe);
-	buf		= req->buf    + req->actual;
-	remainder	= req->length - req->actual;
-
-	send = usbhs_fifo_write(pipe, buf, remainder);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
 
-	/*
-	 * send < 0 : pipe busy
-	 * send = 0 : send zero packet
-	 * send > 0 : send data
-	 *
-	 * send <= max_packet
-	 */
-	if (send > 0)
-		req->actual += send;
-
-	/* send all packet ? */
-	if (send < remainder)
-		is_done = 0;		/* there are remainder data */
-	else if (send < maxp)
-		is_done = 1;		/* short packet */
-	else
-		is_done = !req->zero;	/* send zero packet ? */
+	if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
+		usbhs_pipe_disable(pipe);
+		usbhs_pipe_sequence_data0(pipe);
+		usbhs_pipe_enable(pipe);
+	}
 
-	dev_dbg(dev, "  send %d (%d/ %d/ %d/ %d)\n",
-		usbhs_pipe_number(pipe),
-		remainder, send, is_done, req->zero);
+	usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
 
-	/*
-	 * enable interrupt and send again in irq handler
-	 * if it still have remainder data which should be sent.
-	 */
-	enable = !is_done;
-	uep->handler->irq_mask(uep, enable);
+	usbhs_pkt_start(pipe);
 
-	/*
-	 * usbhs_fifo_enable execute
-	 *  - after callback_update,
-	 *  - before queue_pop / stage_end
-	 */
-	usbhs_fifo_enable(pipe);
+	return 0;
+}
 
-	/*
-	 * all data were sent ?
-	 */
-	if (is_done) {
-		/* it care below call in
-		   "function mode" */
-		if (usbhsg_is_dcp(uep))
-			usbhs_dcp_control_transfer_done(pipe);
+static struct usbhsg_recip_handle req_clear_feature = {
+	.name		= "clear feature",
+	.device		= usbhsg_recip_handler_std_control_done,
+	.interface	= usbhsg_recip_handler_std_control_done,
+	.endpoint	= usbhsg_recip_handler_std_clear_endpoint,
+};
 
-		usbhsg_queue_pop(uep, ureq, 0);
+/*
+ *		USB_TYPE_STANDARD / set feature functions
+ */
+static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv,
+						 struct usbhsg_uep *uep,
+						 struct usb_ctrlrequest *ctrl)
+{
+	switch (le16_to_cpu(ctrl->wValue)) {
+	case USB_DEVICE_TEST_MODE:
+		usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
+		udelay(100);
+		usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex >> 8));
+		break;
+	default:
+		usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
+		break;
 	}
 
 	return 0;
 }
 
-static int usbhsg_prepare_send_packet(struct usbhsg_uep *uep,
-				      struct usbhsg_request *ureq)
+static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv,
+						 struct usbhsg_uep *uep,
+						 struct usb_ctrlrequest *ctrl)
 {
 	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
 
-	/*
-	 *********  assume under spin lock  *********
-	 */
+	usbhs_pipe_stall(pipe);
 
-	usbhs_fifo_prepare_write(pipe);
-	usbhsg_try_run_send_packet(uep, ureq);
+	usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
 
 	return 0;
 }
 
-static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep,
-					 struct usbhsg_request *ureq)
-{
-	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-	struct usb_request *req = &ureq->req;
-	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
-	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-	void *buf;
-	int maxp;
-	int remainder, recv;
-	int is_done = 0;
-
-	/*
-	 *********  assume under spin lock  *********
-	 */
+static struct usbhsg_recip_handle req_set_feature = {
+	.name		= "set feature",
+	.device		= usbhsg_recip_handler_std_set_device,
+	.interface	= usbhsg_recip_handler_std_control_done,
+	.endpoint	= usbhsg_recip_handler_std_set_endpoint,
+};
 
-	maxp		= usbhs_pipe_get_maxpacket(pipe);
-	buf		= req->buf    + req->actual;
-	remainder	= req->length - req->actual;
+/*
+ *		USB_TYPE_STANDARD / get status functions
+ */
+static void __usbhsg_recip_send_complete(struct usb_ep *ep,
+					 struct usb_request *req)
+{
+	struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
 
-	recv = usbhs_fifo_read(pipe, buf, remainder);
-	/*
-	 * recv < 0  : pipe busy
-	 * recv >= 0 : receive data
-	 *
-	 * recv <= max_packet
-	 */
-	if (recv < 0)
-		return -EBUSY;
+	/* free allocated recip-buffer/usb_request */
+	kfree(ureq->pkt.buf);
+	usb_ep_free_request(ep, req);
+}
 
-	/* update parameters */
-	req->actual += recv;
+static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv,
+				       unsigned short status)
+{
+	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
+	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+	struct usb_request *req;
+	unsigned short *buf;
 
-	if ((recv == remainder) ||	/* receive all data */
-	    (recv < maxp))		/* short packet */
-		is_done = 1;
+	/* alloc new usb_request for recip */
+	req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC);
+	if (!req) {
+		dev_err(dev, "recip request allocation fail\n");
+		return;
+	}
 
-	dev_dbg(dev, "  recv %d (%d/ %d/ %d/ %d)\n",
-		usbhs_pipe_number(pipe),
-		remainder, recv, is_done, req->zero);
+	/* alloc recip data buffer */
+	buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
+	if (!buf) {
+		usb_ep_free_request(&dcp->ep, req);
+		dev_err(dev, "recip data allocation fail\n");
+		return;
+	}
 
-	/* read all data ? */
-	if (is_done) {
-		int disable = 0;
+	/* recip data is status */
+	*buf = cpu_to_le16(status);
 
-		uep->handler->irq_mask(uep, disable);
-		usbhs_fifo_disable(pipe);
-		usbhsg_queue_pop(uep, ureq, 0);
-	}
+	/* allocated usb_request/buffer will be freed */
+	req->complete	= __usbhsg_recip_send_complete;
+	req->buf	= buf;
+	req->length	= sizeof(*buf);
+	req->zero	= 0;
 
-	return 0;
+	/* push packet */
+	pipe->handler = &usbhs_fifo_pio_push_handler;
+	usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req));
 }
 
-static int usbhsg_prepare_receive_packet(struct usbhsg_uep *uep,
-					 struct usbhsg_request *ureq)
+static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv,
+					       struct usbhsg_uep *uep,
+					       struct usb_ctrlrequest *ctrl)
 {
-	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-	int enable = 1;
-	int ret;
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	unsigned short status = 0;
 
-	/*
-	 *********  assume under spin lock  *********
-	 */
+	if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED))
+		status = 1 << USB_DEVICE_SELF_POWERED;
 
-	ret = usbhs_fifo_prepare_read(pipe);
-	if (ret < 0)
-		return ret;
+	__usbhsg_recip_send_status(gpriv, status);
 
-	/*
-	 * data will be read in interrupt handler
-	 */
-	uep->handler->irq_mask(uep, enable);
-
-	return ret;
+	return 0;
 }
 
-static struct usbhsg_pipe_handle usbhsg_handler_send_by_empty = {
-	.prepare	= usbhsg_prepare_send_packet,
-	.try_run	= usbhsg_try_run_send_packet,
-	.irq_mask	= usbhsg_irq_empty_ctrl,
-};
-
-static struct usbhsg_pipe_handle usbhsg_handler_send_by_ready = {
-	.prepare	= usbhsg_prepare_send_packet,
-	.try_run	= usbhsg_try_run_send_packet,
-	.irq_mask	= usbhsg_irq_ready_ctrl,
-};
-
-static struct usbhsg_pipe_handle usbhsg_handler_recv_by_ready = {
-	.prepare	= usbhsg_prepare_receive_packet,
-	.try_run	= usbhsg_try_run_receive_packet,
-	.irq_mask	= usbhsg_irq_ready_ctrl,
-};
-
-static struct usbhsg_pipe_handle usbhsg_handler_ctrl_stage_end = {
-	.prepare	= usbhsg_try_run_ctrl_stage_end,
-	.try_run	= usbhsg_try_run_ctrl_stage_end,
-};
-
-/*
- * DCP pipe can NOT use "ready interrupt" for "send"
- * it should use "empty" interrupt.
- * see
- *   "Operation" - "Interrupt Function" - "BRDY Interrupt"
- *
- * on the other hand, normal pipe can use "ready interrupt" for "send"
- * even though it is single/double buffer
- */
-#define usbhsg_handler_send_ctrl	usbhsg_handler_send_by_empty
-#define usbhsg_handler_recv_ctrl	usbhsg_handler_recv_by_ready
-
-#define usbhsg_handler_send_packet	usbhsg_handler_send_by_ready
-#define usbhsg_handler_recv_packet	usbhsg_handler_recv_by_ready
-
-/*
- *		USB_TYPE_STANDARD / clear feature functions
- */
-static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv,
-						 struct usbhsg_uep *uep,
-						 struct usb_ctrlrequest *ctrl)
+static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv,
+						  struct usbhsg_uep *uep,
+						  struct usb_ctrlrequest *ctrl)
 {
-	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
-	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
-	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp);
+	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	unsigned short status = 0;
 
-	usbhs_dcp_control_transfer_done(pipe);
+	__usbhsg_recip_send_status(gpriv, status);
 
 	return 0;
 }
 
-static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv,
-						   struct usbhsg_uep *uep,
-						   struct usb_ctrlrequest *ctrl)
+static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv,
+						 struct usbhsg_uep *uep,
+						 struct usb_ctrlrequest *ctrl)
 {
 	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
 	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+	unsigned short status = 0;
 
-	if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) {
-		usbhs_fifo_disable(pipe);
-		usbhs_pipe_clear_sequence(pipe);
-		usbhs_fifo_enable(pipe);
-	}
-
-	usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
+	if (usbhs_pipe_is_stall(pipe))
+		status = 1 << USB_ENDPOINT_HALT;
 
-	usbhsg_queue_prepare(uep);
+	__usbhsg_recip_send_status(gpriv, status);
 
 	return 0;
 }
 
-struct usbhsg_recip_handle req_clear_feature = {
-	.name		= "clear feature",
-	.device		= usbhsg_recip_handler_std_control_done,
-	.interface	= usbhsg_recip_handler_std_control_done,
-	.endpoint	= usbhsg_recip_handler_std_clear_endpoint,
+static struct usbhsg_recip_handle req_get_status = {
+	.name		= "get status",
+	.device		= usbhsg_recip_handler_std_get_device,
+	.interface	= usbhsg_recip_handler_std_get_interface,
+	.endpoint	= usbhsg_recip_handler_std_get_endpoint,
 };
 
 /*
@@ -575,15 +389,17 @@ static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
 	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
 	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
 	struct usbhsg_uep *uep;
+	struct usbhs_pipe *pipe;
 	int recip = ctrl->bRequestType & USB_RECIP_MASK;
 	int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
-	int ret;
+	int ret = 0;
 	int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
 		    struct usb_ctrlrequest *ctrl);
 	char *msg;
 
 	uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
-	if (!usbhsg_uep_to_pipe(uep)) {
+	pipe = usbhsg_uep_to_pipe(uep);
+	if (!pipe) {
 		dev_err(dev, "wrong recip request\n");
 		return -EINVAL;
 	}
@@ -626,7 +442,7 @@ static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
 	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
 	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
 
-	gpriv->gadget.speed = usbhs_status_get_usb_speed(irq_state);
+	gpriv->gadget.speed = usbhs_bus_get_speed(priv);
 
 	dev_dbg(dev, "state = %x : speed : %d\n",
 		usbhs_status_get_device_state(irq_state),
@@ -660,13 +476,13 @@ static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
 
 	switch (stage) {
 	case READ_DATA_STAGE:
-		dcp->handler = &usbhsg_handler_send_ctrl;
+		pipe->handler = &usbhs_fifo_pio_push_handler;
 		break;
 	case WRITE_DATA_STAGE:
-		dcp->handler = &usbhsg_handler_recv_ctrl;
+		pipe->handler = &usbhs_fifo_pio_pop_handler;
 		break;
 	case NODATA_STATUS_STAGE:
-		dcp->handler = &usbhsg_handler_ctrl_stage_end;
+		pipe->handler = &usbhs_ctrl_stage_end_handler;
 		break;
 	default:
 		return ret;
@@ -683,6 +499,12 @@ static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
 		case USB_REQ_CLEAR_FEATURE:
 			recip_handler = &req_clear_feature;
 			break;
+		case USB_REQ_SET_FEATURE:
+			recip_handler = &req_set_feature;
+			break;
+		case USB_REQ_GET_STATUS:
+			recip_handler = &req_get_status;
+			break;
 		}
 	}
 
@@ -695,140 +517,32 @@ static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
 		ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
 
 	if (ret < 0)
-		usbhs_fifo_stall(pipe);
+		usbhs_pipe_stall(pipe);
 
 	return ret;
 }
 
-static int usbhsg_irq_empty(struct usbhs_priv *priv,
-			    struct usbhs_irq_state *irq_state)
-{
-	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
-	struct usbhsg_uep *uep;
-	struct usbhs_pipe *pipe;
-	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-	int i, ret;
-
-	if (!irq_state->bempsts) {
-		dev_err(dev, "debug %s !!\n", __func__);
-		return -EIO;
-	}
-
-	dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts);
-
-	/*
-	 * search interrupted "pipe"
-	 * not "uep".
-	 */
-	usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
-		if (!(irq_state->bempsts & (1 << i)))
-			continue;
-
-		uep	= usbhsg_pipe_to_uep(pipe);
-		ret	= usbhsg_queue_handle(uep);
-		if (ret < 0)
-			dev_err(dev, "send error %d : %d\n", i, ret);
-	}
-
-	return 0;
-}
-
-static int usbhsg_irq_ready(struct usbhs_priv *priv,
-			    struct usbhs_irq_state *irq_state)
-{
-	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
-	struct usbhsg_uep *uep;
-	struct usbhs_pipe *pipe;
-	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-	int i, ret;
-
-	if (!irq_state->brdysts) {
-		dev_err(dev, "debug %s !!\n", __func__);
-		return -EIO;
-	}
-
-	dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts);
-
-	/*
-	 * search interrupted "pipe"
-	 * not "uep".
-	 */
-	usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
-		if (!(irq_state->brdysts & (1 << i)))
-			continue;
-
-		uep	= usbhsg_pipe_to_uep(pipe);
-		ret	= usbhsg_queue_handle(uep);
-		if (ret < 0)
-			dev_err(dev, "receive error %d : %d\n", i, ret);
-	}
-
-	return 0;
-}
-
 /*
  *
  *		usb_dcp_ops
  *
  */
-static int usbhsg_dcp_enable(struct usbhsg_uep *uep)
-{
-	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
-	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
-	struct usbhs_pipe *pipe;
-
-	/*
-	 *********  assume under spin lock  *********
-	 */
-
-	pipe = usbhs_dcp_malloc(priv);
-	if (!pipe)
-		return -EIO;
-
-	uep->pipe		= pipe;
-	uep->pipe->mod_private	= uep;
-	INIT_LIST_HEAD(&uep->list);
-
-	return 0;
-}
-
-#define usbhsg_dcp_disable usbhsg_pipe_disable
 static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
 {
 	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-	struct usbhsg_request *ureq;
-	int disable = 0;
-
-	/*
-	 *********  assume under spin lock  *********
-	 */
-
-	usbhs_fifo_disable(pipe);
-
-	/*
-	 * disable pipe irq
-	 */
-	usbhsg_irq_empty_ctrl(uep, disable);
-	usbhsg_irq_ready_ctrl(uep, disable);
+	struct usbhs_pkt *pkt;
 
 	while (1) {
-		ureq = usbhsg_queue_get(uep);
-		if (!ureq)
+		pkt = usbhs_pkt_pop(pipe, NULL);
+		if (!pkt)
 			break;
 
-		usbhsg_queue_pop(uep, ureq, -ECONNRESET);
+		usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ECONNRESET);
 	}
 
-	return 0;
-}
+	usbhs_pipe_disable(pipe);
 
-static void usbhsg_uep_init(struct usbhsg_gpriv *gpriv)
-{
-	int i;
-	struct usbhsg_uep *uep;
-
-	usbhsg_for_each_uep_with_dcp(uep, gpriv, i)
-		uep->pipe = NULL;
+	return 0;
 }
 
 /*
@@ -843,57 +557,56 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
 	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
 	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
 	struct usbhs_pipe *pipe;
-	spinlock_t *lock;
-	unsigned long flags;
 	int ret = -EIO;
 
 	/*
 	 * if it already have pipe,
 	 * nothing to do
 	 */
-	if (uep->pipe)
+	if (uep->pipe) {
+		usbhs_pipe_clear(uep->pipe);
+		usbhs_pipe_sequence_data0(uep->pipe);
 		return 0;
+	}
 
-	/********************  spin lock ********************/
-	lock = usbhsg_trylock(gpriv, &flags);
-
-	pipe = usbhs_pipe_malloc(priv, desc);
+	pipe = usbhs_pipe_malloc(priv,
+				 usb_endpoint_type(desc),
+				 usb_endpoint_dir_in(desc));
 	if (pipe) {
 		uep->pipe		= pipe;
 		pipe->mod_private	= uep;
-		INIT_LIST_HEAD(&uep->list);
 
+		/* set epnum / maxp */
+		usbhs_pipe_config_update(pipe, 0,
+					 usb_endpoint_num(desc),
+					 usb_endpoint_maxp(desc));
+
+		/*
+		 * usbhs_fifo_dma_push/pop_handler try to
+		 * use dmaengine if possible.
+		 * It will use pio handler if impossible.
+		 */
 		if (usb_endpoint_dir_in(desc))
-			uep->handler = &usbhsg_handler_send_packet;
+			pipe->handler = &usbhs_fifo_dma_push_handler;
 		else
-			uep->handler = &usbhsg_handler_recv_packet;
+			pipe->handler = &usbhs_fifo_dma_pop_handler;
 
 		ret = 0;
 	}
 
-	usbhsg_unlock(lock, &flags);
-	/********************  spin unlock ******************/
-
 	return ret;
 }
 
 static int usbhsg_ep_disable(struct usb_ep *ep)
 {
 	struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
-	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
-	spinlock_t *lock;
-	unsigned long flags;
-	int ret;
-
-	/********************  spin lock ********************/
-	lock = usbhsg_trylock(gpriv, &flags);
 
-	ret = usbhsg_pipe_disable(uep);
+	usbhsg_pipe_disable(uep);
 
-	usbhsg_unlock(lock, &flags);
-	/********************  spin unlock ******************/
+	uep->pipe->mod_private	= NULL;
+	uep->pipe		= NULL;
 
-	return ret;
+	return 0;
 }
 
 static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
@@ -905,7 +618,8 @@ static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
 	if (!ureq)
 		return NULL;
 
-	INIT_LIST_HEAD(&ureq->node);
+	usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq));
+
 	return &ureq->req;
 }
 
@@ -914,7 +628,7 @@ static void usbhsg_ep_free_request(struct usb_ep *ep,
 {
 	struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
 
-	WARN_ON(!list_empty(&ureq->node));
+	WARN_ON(!list_empty(&ureq->pkt.node));
 	kfree(ureq);
 }
 
@@ -925,69 +639,27 @@ static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
 	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
 	struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
 	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-	spinlock_t *lock;
-	unsigned long flags;
-	int ret = 0;
-
-	/*
-	 * CAUTION [*endpoint queue*]
-	 *
-	 * This function will be called from usb_request :: complete
-	 * or usb driver timing.
-	 * If this function is called from usb_request :: complete,
-	 * it is already under spinlock on this driver.
-	 * but it is called frm usb driver, this function should call spinlock.
-	 *
-	 * This function is using usbshg_trylock to solve this issue.
-	 * if "is_locked" is 1, this mean this function lock it.
-	 * but if it is 0, this mean it is already under spin lock.
-	 * see also
-	 *   CAUTION [*queue handler*]
-	 *   CAUTION [*request complete*]
-	 */
-
-	/********************  spin lock ********************/
-	lock = usbhsg_trylock(gpriv, &flags);
 
 	/* param check */
 	if (usbhsg_is_not_connected(gpriv)	||
 	    unlikely(!gpriv->driver)		||
 	    unlikely(!pipe))
-		ret = -ESHUTDOWN;
-	else
-		usbhsg_queue_push(uep, ureq);
+		return -ESHUTDOWN;
 
-	usbhsg_unlock(lock, &flags);
-	/********************  spin unlock ******************/
-
-	usbhsg_queue_prepare(uep);
+	usbhsg_queue_push(uep, ureq);
 
-	return ret;
+	return 0;
 }
 
 static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
 {
 	struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
 	struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
-	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
-	spinlock_t *lock;
-	unsigned long flags;
-
-	/*
-	 * see
-	 *   CAUTION [*queue handler*]
-	 *   CAUTION [*endpoint queue*]
-	 *   CAUTION [*request complete*]
-	 */
-
-	/********************  spin lock ********************/
-	lock = usbhsg_trylock(gpriv, &flags);
+	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
 
+	usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq));
 	usbhsg_queue_pop(uep, ureq, -ECONNRESET);
 
-	usbhsg_unlock(lock, &flags);
-	/********************  spin unlock ******************/
-
 	return 0;
 }
 
@@ -996,42 +668,32 @@ static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge)
 	struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
 	struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
 	struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
 	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-	spinlock_t *lock;
 	unsigned long flags;
-	int ret = -EAGAIN;
-
-	/*
-	 * see
-	 *   CAUTION [*queue handler*]
-	 *   CAUTION [*endpoint queue*]
-	 *   CAUTION [*request complete*]
-	 */
 
-	/********************  spin lock ********************/
-	lock = usbhsg_trylock(gpriv, &flags);
-	if (!usbhsg_queue_get(uep)) {
+	usbhsg_pipe_disable(uep);
 
-		dev_dbg(dev, "set halt %d (pipe %d)\n",
-			halt, usbhs_pipe_number(pipe));
+	dev_dbg(dev, "set halt %d (pipe %d)\n",
+		halt, usbhs_pipe_number(pipe));
 
-		if (halt)
-			usbhs_fifo_stall(pipe);
-		else
-			usbhs_fifo_disable(pipe);
+	/********************  spin lock ********************/
+	usbhs_lock(priv, flags);
 
-		if (halt && wedge)
-			usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
-		else
-			usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
+	if (halt)
+		usbhs_pipe_stall(pipe);
+	else
+		usbhs_pipe_disable(pipe);
 
-		ret = 0;
-	}
+	if (halt && wedge)
+		usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE);
+	else
+		usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE);
 
-	usbhsg_unlock(lock, &flags);
+	usbhs_unlock(priv, flags);
 	/********************  spin unlock ******************/
 
-	return ret;
+	return 0;
 }
 
 static int usbhsg_ep_set_halt(struct usb_ep *ep, int value)
@@ -1067,28 +729,39 @@ static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
 	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
 	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
 	struct device *dev = usbhs_priv_to_dev(priv);
-	spinlock_t *lock;
 	unsigned long flags;
+	int ret = 0;
 
 	/********************  spin lock ********************/
-	lock = usbhsg_trylock(gpriv, &flags);
+	usbhs_lock(priv, flags);
 
-	/*
-	 * enable interrupt and systems if ready
-	 */
 	usbhsg_status_set(gpriv, status);
 	if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
 	      usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
-		goto usbhsg_try_start_unlock;
+		ret = -1; /* not ready */
+
+	usbhs_unlock(priv, flags);
+	/********************  spin unlock ********************/
+
+	if (ret < 0)
+		return 0; /* not ready is not error */
 
+	/*
+	 * enable interrupt and systems if ready
+	 */
 	dev_dbg(dev, "start gadget\n");
 
 	/*
 	 * pipe initialize and enable DCP
 	 */
-	usbhs_pipe_init(priv);
-	usbhsg_uep_init(gpriv);
-	usbhsg_dcp_enable(dcp);
+	usbhs_pipe_init(priv,
+			usbhsg_dma_map_ctrl);
+	usbhs_fifo_init(priv);
+
+	/* dcp init instead of usbhsg_ep_enable() */
+	dcp->pipe		= usbhs_dcp_malloc(priv);
+	dcp->pipe->mod_private	= dcp;
+	usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
 
 	/*
 	 * system config enble
@@ -1096,25 +769,15 @@ static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
 	 * - function
 	 * - usb module
 	 */
-	usbhs_sys_hispeed_ctrl(priv, 1);
 	usbhs_sys_function_ctrl(priv, 1);
-	usbhs_sys_usb_ctrl(priv, 1);
 
 	/*
 	 * enable irq callback
 	 */
 	mod->irq_dev_state	= usbhsg_irq_dev_state;
 	mod->irq_ctrl_stage	= usbhsg_irq_ctrl_stage;
-	mod->irq_empty		= usbhsg_irq_empty;
-	mod->irq_ready		= usbhsg_irq_ready;
-	mod->irq_bempsts	= 0;
-	mod->irq_brdysts	= 0;
 	usbhs_irq_callback_update(priv, mod);
 
-usbhsg_try_start_unlock:
-	usbhsg_unlock(lock, &flags);
-	/********************  spin unlock ********************/
-
 	return 0;
 }
 
@@ -1124,53 +787,44 @@ static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
 	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
 	struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
 	struct device *dev = usbhs_priv_to_dev(priv);
-	spinlock_t *lock;
 	unsigned long flags;
+	int ret = 0;
 
 	/********************  spin lock ********************/
-	lock = usbhsg_trylock(gpriv, &flags);
+	usbhs_lock(priv, flags);
 
-	/*
-	 * disable interrupt and systems if 1st try
-	 */
 	usbhsg_status_clr(gpriv, status);
 	if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
 	    !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
-		goto usbhsg_try_stop_unlock;
+		ret = -1; /* already done */
+
+	usbhs_unlock(priv, flags);
+	/********************  spin unlock ********************/
+
+	if (ret < 0)
+		return 0; /* already done is not error */
+
+	/*
+	 * disable interrupt and systems if 1st try
+	 */
+	usbhs_fifo_quit(priv);
 
 	/* disable all irq */
 	mod->irq_dev_state	= NULL;
 	mod->irq_ctrl_stage	= NULL;
-	mod->irq_empty		= NULL;
-	mod->irq_ready		= NULL;
-	mod->irq_bempsts	= 0;
-	mod->irq_brdysts	= 0;
 	usbhs_irq_callback_update(priv, mod);
 
-	usbhsg_dcp_disable(dcp);
-
 	gpriv->gadget.speed = USB_SPEED_UNKNOWN;
 
 	/* disable sys */
-	usbhs_sys_hispeed_ctrl(priv, 0);
+	usbhs_sys_set_test_mode(priv, 0);
 	usbhs_sys_function_ctrl(priv, 0);
-	usbhs_sys_usb_ctrl(priv, 0);
 
-	usbhsg_unlock(lock, &flags);
-	/********************  spin unlock ********************/
-
-	if (gpriv->driver &&
-	    gpriv->driver->disconnect)
-		gpriv->driver->disconnect(&gpriv->gadget);
+	usbhsg_ep_disable(&dcp->ep);
 
 	dev_dbg(dev, "stop gadget\n");
 
 	return 0;
-
-usbhsg_try_stop_unlock:
-	usbhsg_unlock(lock, &flags);
-
-	return 0;
 }
 
 /*
@@ -1178,89 +832,34 @@ usbhsg_try_stop_unlock:
  *		linux usb function
  *
  */
-struct usbhsg_gpriv *the_controller;
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
-			    int (*bind)(struct usb_gadget *))
+static int usbhsg_gadget_start(struct usb_gadget *gadget,
+		struct usb_gadget_driver *driver)
 {
-	struct usbhsg_gpriv *gpriv = the_controller;
-	struct usbhs_priv *priv;
-	struct device *dev;
-	int ret;
+	struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
 
-	if (!bind		||
-	    !driver		||
+	if (!driver		||
 	    !driver->setup	||
-	    driver->speed != USB_SPEED_HIGH)
+	    driver->max_speed < USB_SPEED_FULL)
 		return -EINVAL;
-	if (!gpriv)
-		return -ENODEV;
-	if (gpriv->driver)
-		return -EBUSY;
-
-	dev  = usbhsg_gpriv_to_dev(gpriv);
-	priv = usbhsg_gpriv_to_priv(gpriv);
 
 	/* first hook up the driver ... */
 	gpriv->driver = driver;
-	gpriv->gadget.dev.driver = &driver->driver;
-
-	ret = device_add(&gpriv->gadget.dev);
-	if (ret) {
-		dev_err(dev, "device_add error %d\n", ret);
-		goto add_fail;
-	}
-
-	ret = bind(&gpriv->gadget);
-	if (ret) {
-		dev_err(dev, "bind to driver %s error %d\n",
-			driver->driver.name, ret);
-		goto bind_fail;
-	}
-
-	dev_dbg(dev, "bind %s\n", driver->driver.name);
 
 	return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD);
-
-bind_fail:
-	device_del(&gpriv->gadget.dev);
-add_fail:
-	gpriv->driver = NULL;
-	gpriv->gadget.dev.driver = NULL;
-
-	return ret;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int usbhsg_gadget_stop(struct usb_gadget *gadget,
+		struct usb_gadget_driver *driver)
 {
-	struct usbhsg_gpriv *gpriv = the_controller;
-	struct usbhs_priv *priv;
-	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
-
-	if (!gpriv)
-		return -ENODEV;
-
-	if (!driver		||
-	    !driver->unbind	||
-	    driver != gpriv->driver)
-		return -EINVAL;
-
-	dev  = usbhsg_gpriv_to_dev(gpriv);
-	priv = usbhsg_gpriv_to_priv(gpriv);
+	struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
 
 	usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD);
-	device_del(&gpriv->gadget.dev);
 	gpriv->driver = NULL;
 
-	if (driver->disconnect)
-		driver->disconnect(&gpriv->gadget);
-
-	driver->unbind(&gpriv->gadget);
-	dev_dbg(dev, "unbind %s\n", driver->driver.name);
-
 	return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /*
  *		usb gadget ops
@@ -1273,8 +872,34 @@ static int usbhsg_get_frame(struct usb_gadget *gadget)
 	return usbhs_frame_get_num(priv);
 }
 
-static struct usb_gadget_ops usbhsg_gadget_ops = {
+static int usbhsg_pullup(struct usb_gadget *gadget, int is_on)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+	struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+
+	usbhs_sys_function_pullup(priv, is_on);
+
+	return 0;
+}
+
+static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self)
+{
+	struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+
+	if (is_self)
+		usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED);
+	else
+		usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED);
+
+	return 0;
+}
+
+static const struct usb_gadget_ops usbhsg_gadget_ops = {
 	.get_frame		= usbhsg_get_frame,
+	.set_selfpowered	= usbhsg_set_selfpowered,
+	.udc_start		= usbhsg_gadget_start,
+	.udc_stop		= usbhsg_gadget_stop,
+	.pullup			= usbhsg_pullup,
 };
 
 static int usbhsg_start(struct usbhs_priv *priv)
@@ -1284,16 +909,24 @@ static int usbhsg_start(struct usbhs_priv *priv)
 
 static int usbhsg_stop(struct usbhs_priv *priv)
 {
+	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+
+	/* cable disconnect */
+	if (gpriv->driver &&
+	    gpriv->driver->disconnect)
+		gpriv->driver->disconnect(&gpriv->gadget);
+
 	return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED);
 }
 
-int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
+int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 {
 	struct usbhsg_gpriv *gpriv;
 	struct usbhsg_uep *uep;
 	struct device *dev = usbhs_priv_to_dev(priv);
 	int pipe_size = usbhs_get_dparam(priv, pipe_size);
 	int i;
+	int ret;
 
 	gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
 	if (!gpriv) {
@@ -1304,6 +937,7 @@ int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 	uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
 	if (!uep) {
 		dev_err(dev, "Could not allocate ep\n");
+		ret = -ENOMEM;
 		goto usbhs_mod_gadget_probe_err_gpriv;
 	}
 
@@ -1331,12 +965,10 @@ int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 	/*
 	 * init gadget
 	 */
-	device_initialize(&gpriv->gadget.dev);
-	dev_set_name(&gpriv->gadget.dev, "gadget");
 	gpriv->gadget.dev.parent	= dev;
 	gpriv->gadget.name		= "renesas_usbhs_udc";
 	gpriv->gadget.ops		= &usbhsg_gadget_ops;
-	gpriv->gadget.is_dualspeed	= 1;
+	gpriv->gadget.max_speed		= USB_SPEED_HIGH;
 
 	INIT_LIST_HEAD(&gpriv->gadget.ep_list);
 
@@ -1345,41 +977,49 @@ int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 	 */
 	usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
 		uep->gpriv	= gpriv;
+		uep->pipe	= NULL;
 		snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
 
 		uep->ep.name		= uep->ep_name;
 		uep->ep.ops		= &usbhsg_ep_ops;
 		INIT_LIST_HEAD(&uep->ep.ep_list);
-		INIT_LIST_HEAD(&uep->list);
 
 		/* init DCP */
 		if (usbhsg_is_dcp(uep)) {
 			gpriv->gadget.ep0 = &uep->ep;
-			uep->ep.maxpacket = 64;
+			usb_ep_set_maxpacket_limit(&uep->ep, 64);
 		}
 		/* init normal pipe */
 		else {
-			uep->ep.maxpacket = 512;
+			usb_ep_set_maxpacket_limit(&uep->ep, 512);
 			list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
 		}
 	}
 
-	the_controller = gpriv;
+	ret = usb_add_gadget_udc(dev, &gpriv->gadget);
+	if (ret)
+		goto err_add_udc;
+
 
 	dev_info(dev, "gadget probed\n");
 
 	return 0;
 
+err_add_udc:
+	kfree(gpriv->uep);
+
 usbhs_mod_gadget_probe_err_gpriv:
 	kfree(gpriv);
 
-	return -ENOMEM;
+	return ret;
 }
 
-void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv)
+void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
 {
 	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
 
+	usb_del_gadget_udc(&gpriv->gadget);
+
 	kfree(gpriv->uep);
 	kfree(gpriv);
 }