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Commit ae8e530a authored by Ricardo Ribalda Delgado's avatar Ricardo Ribalda Delgado Committed by Felipe Balbi
Browse files

usb: gadget: net2280: Code Cleanup 



- Move logical continuations to end of line
- Improve spacing

Signed-off-by: default avatarRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent fae3c158

drivers/usb/gadget/net2280.c

+76 −79
Original line number Diff line number Diff line
@@ -100,9 +100,9 @@ static bool use_dma_chaining; 
static bool use_msi = true;



/* "modprobe net2280 use_dma=n" etc */

module_param(use_dma, bool, S_IRUGO);

module_param(use_dma_chaining, bool, S_IRUGO);

module_param(use_msi, bool, S_IRUGO);

module_param(use_dma, bool, 0444);

module_param(use_dma_chaining, bool, 0444);

module_param(use_msi, bool, 0444);



/* mode 0 == ep-{a,b,c,d} 1K fifo each

 * mode 1 == ep-{a,b} 2K fifo each, ep-{c,d} unavailable
@@ -121,7 +121,7 @@ module_param (fifo_mode, ushort, 0644); 
static bool enable_suspend;



/* "modprobe net2280 enable_suspend=1" etc */

module_param(enable_suspend, bool, S_IRUGO);

module_param(enable_suspend, bool, 0444);



/* force full-speed operation */

static bool full_speed;
@@ -169,8 +169,8 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) 
	static const u32 ep_key[9] = { 1, 0, 1, 0, 1, 1, 0, 1, 0 };



	ep = container_of(_ep, struct net2280_ep, ep);

	if (!_ep || !desc || ep->desc || _ep->name == ep0name

			|| desc->bDescriptorType != USB_DT_ENDPOINT)

	if (!_ep || !desc || ep->desc || _ep->name == ep0name ||

			desc->bDescriptorType != USB_DT_ENDPOINT)

		return -EINVAL;

	dev = ep->dev;

	if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
@@ -220,9 +220,9 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) 
	tmp = (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);

	if (tmp == USB_ENDPOINT_XFER_INT) {

		/* erratum 0105 workaround prevents hs NYET */

		if (dev->chiprev == 0100

				&& dev->gadget.speed == USB_SPEED_HIGH

				&& !(desc->bEndpointAddress & USB_DIR_IN))

		if (dev->chiprev == 0100 &&

				dev->gadget.speed == USB_SPEED_HIGH &&

				!(desc->bEndpointAddress & USB_DIR_IN))

			writel(BIT(CLEAR_NAK_OUT_PACKETS_MODE),

				&ep->regs->ep_rsp);

	} else if (tmp == USB_ENDPOINT_XFER_BULK) {
@@ -402,8 +402,8 @@ static void ep_reset_228x(struct net2280_regs __iomem *regs, 
		BIT(DATA_PACKET_RECEIVED_INTERRUPT) |

		BIT(DATA_PACKET_TRANSMITTED_INTERRUPT) |

		BIT(DATA_OUT_PING_TOKEN_INTERRUPT) |

		BIT(DATA_IN_TOKEN_INTERRUPT)

		, &ep->regs->ep_stat);

		BIT(DATA_IN_TOKEN_INTERRUPT),

		&ep->regs->ep_stat);



	/* fifo size is handled separately */

}
@@ -425,9 +425,9 @@ static void ep_reset_338x(struct net2280_regs __iomem *regs, 
		writel(BIT(DMA_ABORT_DONE_INTERRUPT) |

		       BIT(DMA_PAUSE_DONE_INTERRUPT) |

		       BIT(DMA_SCATTER_GATHER_DONE_INTERRUPT) |

		       BIT(DMA_TRANSACTION_DONE_INTERRUPT)

		       /* | BIT(DMA_ABORT) */

		       , &ep->dma->dmastat);

		       BIT(DMA_TRANSACTION_DONE_INTERRUPT),

		       /* | BIT(DMA_ABORT), */

		       &ep->dma->dmastat);



		dmastat = readl(&ep->dma->dmastat);

		if (dmastat == 0x5002) {
@@ -618,15 +618,15 @@ static void out_flush(struct net2280_ep *ep) 


	statp = &ep->regs->ep_stat;

	writel(BIT(DATA_OUT_PING_TOKEN_INTERRUPT) |

		BIT(DATA_PACKET_RECEIVED_INTERRUPT)

		, statp);

		BIT(DATA_PACKET_RECEIVED_INTERRUPT),

		statp);

	writel(BIT(FIFO_FLUSH), statp);

	/* Make sure that stap is written */

	mb();

	tmp = readl(statp);

	if (tmp & BIT(DATA_OUT_PING_TOKEN_INTERRUPT)

	if (tmp & BIT(DATA_OUT_PING_TOKEN_INTERRUPT) &&

			/* high speed did bulk NYET; fifo isn't filling */

			&& ep->dev->gadget.speed == USB_SPEED_FULL) {

			ep->dev->gadget.speed == USB_SPEED_FULL) {

		unsigned	usec;



		usec = 50;		/* 64 byte bulk/interrupt */
@@ -653,8 +653,8 @@ static int read_fifo(struct net2280_ep *ep, struct net2280_request *req) 
	/* erratum 0106 ... packets coming in during fifo reads might

	 * be incompletely rejected.  not all cases have workarounds.

	 */

	if (ep->dev->chiprev == 0x0100

			&& ep->dev->gadget.speed == USB_SPEED_FULL) {

	if (ep->dev->chiprev == 0x0100 &&

			ep->dev->gadget.speed == USB_SPEED_FULL) {

		udelay(1);

		tmp = readl(&ep->regs->ep_stat);

		if ((tmp & BIT(NAK_OUT_PACKETS)))
@@ -726,8 +726,8 @@ static int read_fifo(struct net2280_ep *ep, struct net2280_request *req) 
		(void) readl(&ep->regs->ep_rsp);

	}



	return is_short || ((req->req.actual == req->req.length)

				&& !req->req.zero);

	return is_short || ((req->req.actual == req->req.length) &&

			!req->req.zero);

}



/* fill out dma descriptor to match a given request */
@@ -744,8 +744,8 @@ static void fill_dma_desc(struct net2280_ep *ep, 
	 */

	if (ep->is_in)

		dmacount |= BIT(DMA_DIRECTION);

	if ((!ep->is_in && (dmacount % ep->ep.maxpacket) != 0)

			|| ep->dev->pdev->device != 0x2280)

	if ((!ep->is_in && (dmacount % ep->ep.maxpacket) != 0) ||

					ep->dev->pdev->device != 0x2280)

		dmacount |= BIT(END_OF_CHAIN);



	req->valid = valid;
@@ -836,8 +836,8 @@ static void start_dma(struct net2280_ep *ep, struct net2280_request *req) 


			/* dma irq, faking scatterlist status */

			req->td->dmacount = cpu_to_le32(req->req.length - tmp);

			writel(BIT(DMA_DONE_INTERRUPT_ENABLE)

				| tmp, &dma->dmacount);

			writel(BIT(DMA_DONE_INTERRUPT_ENABLE) | tmp,

					&dma->dmacount);

			req->td->dmadesc = 0;

			req->valid = 1;
@@ -1120,8 +1120,8 @@ static void scan_dma_completions(struct net2280_ep *ep) 
			/* single transfer mode */

			dma_done(ep, req, tmp, 0);

			break;

		} else if (!ep->is_in

				&& (req->req.length % ep->ep.maxpacket) != 0) {

		} else if (!ep->is_in &&

				(req->req.length % ep->ep.maxpacket) != 0) {

			tmp = readl(&ep->regs->ep_stat);

			if (ep->dev->pdev->vendor == PCI_VENDOR_ID_PLX)

				return dma_done(ep, req, tmp, 0);
@@ -1317,8 +1317,8 @@ static int net2280_dequeue(struct usb_ep *_ep, struct usb_request *_req) 
			writel(le32_to_cpu(req->td->dmadesc),

				&ep->dma->dmadesc);

			if (req->td->dmacount & dma_done_ie)

				writel(readl(&ep->dma->dmacount)

						| le32_to_cpu(dma_done_ie),

				writel(readl(&ep->dma->dmacount) |

						le32_to_cpu(dma_done_ie),

					&ep->dma->dmacount);

		} else {

			struct net2280_request	*prev;
@@ -2255,8 +2255,8 @@ static void ep0_start_228x(struct net2280 *dev) 
{

	writel(BIT(CLEAR_EP_HIDE_STATUS_PHASE) |

		BIT(CLEAR_NAK_OUT_PACKETS) |

		BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE)

		, &dev->epregs[0].ep_rsp);

		BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE),

		&dev->epregs[0].ep_rsp);



	/*

	 * hardware optionally handles a bunch of standard requests
@@ -2268,8 +2268,8 @@ static void ep0_start_228x(struct net2280 *dev) 
		BIT(SET_ADDRESS) |

		BIT(DEVICE_SET_CLEAR_DEVICE_REMOTE_WAKEUP) |

		BIT(GET_DEVICE_STATUS) |

		BIT(GET_INTERFACE_STATUS)

		, &dev->usb->stdrsp);

		BIT(GET_INTERFACE_STATUS),

		&dev->usb->stdrsp);

	writel(BIT(USB_ROOT_PORT_WAKEUP_ENABLE) |

		BIT(SELF_POWERED_USB_DEVICE) |

		BIT(REMOTE_WAKEUP_SUPPORT) |
@@ -2330,8 +2330,8 @@ static void ep0_start_338x(struct net2280 *dev) 


	/* enable irqs so we can see ep0 and general operation  */

	writel(BIT(SETUP_PACKET_INTERRUPT_ENABLE) |

	       BIT(ENDPOINT_0_INTERRUPT_ENABLE)

	       , &dev->regs->pciirqenb0);

	       BIT(ENDPOINT_0_INTERRUPT_ENABLE),

	       &dev->regs->pciirqenb0);

	writel(BIT(PCI_INTERRUPT_ENABLE) |

	       BIT(ROOT_PORT_RESET_INTERRUPT_ENABLE) |

	       BIT(SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE) |
@@ -2366,8 +2366,8 @@ static int net2280_start(struct usb_gadget *_gadget, 
	 * (dev->usb->xcvrdiag & FORCE_FULL_SPEED_MODE)

	 * "must not be used in normal operation"

	 */

	if (!driver || driver->max_speed < USB_SPEED_HIGH

			|| !driver->setup)

	if (!driver || driver->max_speed < USB_SPEED_HIGH ||

			!driver->setup)

		return -EINVAL;



	dev = container_of(_gadget, struct net2280, gadget);
@@ -2542,10 +2542,10 @@ static void handle_ep_small(struct net2280_ep *ep) 
				}

				mode = 2;

			/* an extra OUT token is an error */

			} else if (((t & BIT(DATA_OUT_PING_TOKEN_INTERRUPT))

					&& req

					&& req->req.actual == req->req.length)

					|| (ep->responded && !req)) {

			} else if (((t & BIT(DATA_OUT_PING_TOKEN_INTERRUPT)) &&

					req &&

					req->req.actual == req->req.length) ||

					(ep->responded && !req)) {

				ep->dev->protocol_stall = 1;

				set_halt(ep);

				ep->stopped = 1;
@@ -2576,8 +2576,8 @@ static void handle_ep_small(struct net2280_ep *ep) 
				 * dma handles (M >= N), may empty the queue

				 */

				scan_dma_completions(ep);

				if (unlikely(list_empty(&ep->queue)

						|| ep->out_overflow)) {

				if (unlikely(list_empty(&ep->queue) ||

						ep->out_overflow)) {

					req = NULL;

					break;

				}
@@ -2611,9 +2611,9 @@ static void handle_ep_small(struct net2280_ep *ep) 
			}



			/* also flush to prevent erratum 0106 trouble */

			if (unlikely(ep->out_overflow

					|| (ep->dev->chiprev == 0x0100

						&& ep->dev->gadget.speed

			if (unlikely(ep->out_overflow ||

					(ep->dev->chiprev == 0x0100 &&

					ep->dev->gadget.speed

					== USB_SPEED_FULL))) {

				out_flush(ep);

				ep->out_overflow = 0;
@@ -2808,9 +2808,9 @@ static void ep_stall(struct net2280_ep *ep, int stall) 
		val = readl(&ep->regs->ep_rsp);

		val |= BIT(CLEAR_ENDPOINT_HALT) |

			BIT(CLEAR_ENDPOINT_TOGGLE);

		writel(val

		       /* | BIT(CLEAR_NAK_PACKETS)*/

		       , &ep->regs->ep_rsp);

		writel(val,

		       /* | BIT(CLEAR_NAK_PACKETS),*/

		       &ep->regs->ep_rsp);

		ep->is_halt = 0;

		val = readl(&ep->regs->ep_rsp);

	}
@@ -3125,8 +3125,8 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat) 
				   BIT(DATA_PACKET_RECEIVED_INTERRUPT) |

				   BIT(DATA_PACKET_TRANSMITTED_INTERRUPT) |

				   BIT(DATA_OUT_PING_TOKEN_INTERRUPT) |

				   BIT(DATA_IN_TOKEN_INTERRUPT)

				   , &ep->regs->ep_stat);

				   BIT(DATA_IN_TOKEN_INTERRUPT),

				   &ep->regs->ep_stat);

		}

		u.raw[0] = readl(&dev->usb->setup0123);

		u.raw[1] = readl(&dev->usb->setup4567);
@@ -3206,8 +3206,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat) 
			/* hw handles device features */

			if (u.r.bRequestType != USB_RECIP_ENDPOINT)

				goto delegate;

			if (w_value != USB_ENDPOINT_HALT

					|| w_length != 0)

			if (w_value != USB_ENDPOINT_HALT || w_length != 0)

				goto do_stall;

			e = get_ep_by_addr(dev, w_index);

			if (!e)
@@ -3233,8 +3232,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat) 
			/* hw handles device features */

			if (u.r.bRequestType != USB_RECIP_ENDPOINT)

				goto delegate;

			if (w_value != USB_ENDPOINT_HALT

					|| w_length != 0)

			if (w_value != USB_ENDPOINT_HALT || w_length != 0)

				goto do_stall;

			e = get_ep_by_addr(dev, w_index);

			if (!e)
@@ -3326,12 +3324,11 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat) 
	 */

	if (stat & tmp) {

		writel(tmp, &dev->regs->irqstat1);

		if ((((stat & BIT(ROOT_PORT_RESET_INTERRUPT))

					&& ((readl(&dev->usb->usbstat) & mask)

							== 0))

				|| ((readl(&dev->usb->usbctl)

					& BIT(VBUS_PIN)) == 0)

			    ) && (dev->gadget.speed != USB_SPEED_UNKNOWN)) {

		if ((((stat & BIT(ROOT_PORT_RESET_INTERRUPT)) &&

				(readl(&dev->usb->usbstat) & mask)) ||

				((readl(&dev->usb->usbctl) &

					BIT(VBUS_PIN)) == 0)) &&

				(dev->gadget.speed != USB_SPEED_UNKNOWN)) {

			DEBUG(dev, "disconnect %s\n",

					dev->driver->driver.name);

			stop_activity(dev, dev->driver);

drivers/usb/gadget/net2280.h

+2 −2
Original line number Diff line number Diff line
@@ -117,8 +117,8 @@ static inline void allow_status(struct net2280_ep *ep) 
	/* ep0 only */

	writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) |

		BIT(CLEAR_NAK_OUT_PACKETS) |

		BIT(CLEAR_NAK_OUT_PACKETS_MODE)

		, &ep->regs->ep_rsp);

		BIT(CLEAR_NAK_OUT_PACKETS_MODE),

		&ep->regs->ep_rsp);

	ep->stopped = 1;

}