Commit 8f182e5d authored by Darius Augulis's avatar Darius Augulis Committed by Greg Kroah-Hartman
Browse files

USB: imx_udc: Fix IMX UDC gadget bugs 



Fix small bugs and add some omptimization in IMX UDC Gadget.

Signed-off-by: default avatarDarius Augulis <augulis.darius@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 664d5df9

drivers/usb/gadget/imx_udc.c

+19 −14
Original line number Diff line number Diff line
@@ -283,7 +283,7 @@ void imx_ep_stall(struct imx_ep_struct *imx_ep) 
	imx_flush(imx_ep);



	/* Special care for ep0 */

	if (EP_NO(imx_ep)) {

	if (!EP_NO(imx_ep)) {

		temp = __raw_readl(imx_usb->base + USB_CTRL);

		__raw_writel(temp | CTRL_CMDOVER | CTRL_CMDERROR, imx_usb->base + USB_CTRL);

		do { } while (__raw_readl(imx_usb->base + USB_CTRL) & CTRL_CMDOVER);
@@ -301,7 +301,7 @@ void imx_ep_stall(struct imx_ep_struct *imx_ep) 
	 			break;

	 		udelay(20);

	 	}

		if (i == 50)

		if (i == 100)

			D_ERR(imx_usb->dev, "<%s> Non finished stall on %s\n",

				__func__, imx_ep->ep.name);

	}
@@ -539,10 +539,9 @@ static int handle_ep0(struct imx_ep_struct *imx_ep) 
	struct imx_request *req = NULL;

	int ret = 0;



	if (!list_empty(&imx_ep->queue))

	if (!list_empty(&imx_ep->queue)) {

		req = list_entry(imx_ep->queue.next, struct imx_request, queue);



	if (req) {

		switch (imx_ep->imx_usb->ep0state) {



		case EP0_IN_DATA_PHASE:			/* GET_DESCRIPTOR */
@@ -561,6 +560,10 @@ static int handle_ep0(struct imx_ep_struct *imx_ep) 
		}

	}



	else

		D_ERR(imx_ep->imx_usb->dev, "<%s> no request on %s\n",

						__func__, imx_ep->ep.name);



	return ret;

}
@@ -759,7 +762,7 @@ static int imx_ep_queue 
	*/

	if (imx_usb->set_config && !EP_NO(imx_ep)) {

		imx_usb->set_config = 0;

		D_EPX(imx_usb->dev,

		D_ERR(imx_usb->dev,

			"<%s> gadget reply set config\n", __func__);

		return 0;

	}
@@ -779,8 +782,6 @@ static int imx_ep_queue 
		return -ESHUTDOWN;

	}



	local_irq_save(flags);



	/* Debug */

	D_REQ(imx_usb->dev, "<%s> ep%d %s request for [%d] bytes\n",

		__func__, EP_NO(imx_ep),
@@ -790,17 +791,18 @@ static int imx_ep_queue 


	if (imx_ep->stopped) {

		usb_req->status = -ESHUTDOWN;

		ret = -ESHUTDOWN;

		goto out;

		return -ESHUTDOWN;

	}



	if (req->in_use) {

		D_ERR(imx_usb->dev,

			"<%s> refusing to queue req %p (already queued)\n",

			__func__, req);

		goto out;

		return 0;

	}



	local_irq_save(flags);



	usb_req->status = -EINPROGRESS;

	usb_req->actual = 0;
@@ -810,7 +812,7 @@ static int imx_ep_queue 
		ret = handle_ep0(imx_ep);

	else

		ret = handle_ep(imx_ep);

out:



	local_irq_restore(flags);

	return ret;

}
@@ -1010,10 +1012,8 @@ static irqreturn_t imx_udc_irq(int irq, void *dev) 
				dump_usb_stat(__func__, imx_usb);

	}



	if (!imx_usb->driver) {

		/*imx_udc_disable(imx_usb);*/

	if (!imx_usb->driver)

		goto end_irq;

	}



	if (intr & INTR_WAKEUP) {

		if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN
@@ -1095,6 +1095,11 @@ static irqreturn_t imx_udc_irq(int irq, void *dev) 
	}



	if (intr & INTR_SOF) {

		/* Copy from Freescale BSP.

		   We must enable SOF intr and set CMDOVER.

		   Datasheet don't specifiy this action, but it

		   is done in Freescale BSP, so just copy it.

		*/

		if (imx_usb->ep0state == EP0_IDLE) {

			temp = __raw_readl(imx_usb->base + USB_CTRL);

			__raw_writel(temp | CTRL_CMDOVER, imx_usb->base + USB_CTRL);

drivers/usb/gadget/imx_udc.h

+1 −1
Original line number Diff line number Diff line
@@ -170,7 +170,7 @@ struct imx_udc_struct { 
/* #define DEBUG_IRQ */

/* #define DEBUG_EPIRQ */

/* #define DEBUG_DUMP */

#define DEBUG_ERR

/* #define DEBUG_ERR */



#ifdef DEBUG_REQ

	#define D_REQ(dev, args...)	dev_dbg(dev, ## args)