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Code Issues Releases Wiki Activity

usb: gadget: net2280: Code Cleanup

Browse source 
- Move logical continuations to end of line
- Improve spacing

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Ricardo Ribalda Delgado 2014-05-20 18:30:10 +02:00 committed by Felipe Balbi
parent fae3c15880
commit ae8e530a7e
2 changed files with 78 additions and 81 deletions
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155
drivers/usb/gadget/net2280.c
View file

@ -100,9 +100,9 @@ static bool use_dma_chaining;
static bool use_msi = true; static bool use_msi = true;
/* "modprobe net2280 use_dma=n" etc */ /* "modprobe net2280 use_dma=n" etc */
module_param(use_dma, bool, S_IRUGO); module_param(use_dma, bool, 0444);
module_param(use_dma_chaining, bool, S_IRUGO); module_param(use_dma_chaining, bool, 0444);
module_param(use_msi, bool, S_IRUGO); module_param(use_msi, bool, 0444);
/* mode 0 == ep-{a,b,c,d} 1K fifo each /* mode 0 == ep-{a,b,c,d} 1K fifo each
* mode 1 == ep-{a,b} 2K fifo each, ep-{c,d} unavailable * mode 1 == ep-{a,b} 2K fifo each, ep-{c,d} unavailable
@ -111,7 +111,7 @@ module_param(use_msi, bool, S_IRUGO);
static ushort fifo_mode; static ushort fifo_mode;
/* "modprobe net2280 fifo_mode=1" etc */ /* "modprobe net2280 fifo_mode=1" etc */
module_param (fifo_mode, ushort, 0644); module_param(fifo_mode, ushort, 0644);
/* enable_suspend -- When enabled, the driver will respond to /* enable_suspend -- When enabled, the driver will respond to
* USB suspend requests by powering down the NET2280. Otherwise, * USB suspend requests by powering down the NET2280. Otherwise,
@ -121,7 +121,7 @@ module_param (fifo_mode, ushort, 0644);
static bool enable_suspend; static bool enable_suspend;
/* "modprobe net2280 enable_suspend=1" etc */ /* "modprobe net2280 enable_suspend=1" etc */
module_param(enable_suspend, bool, S_IRUGO); module_param(enable_suspend, bool, 0444);
/* force full-speed operation */ /* force full-speed operation */
static bool full_speed; 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 }; static const u32 ep_key[9] = { 1, 0, 1, 0, 1, 1, 0, 1, 0 };
ep = container_of(_ep, struct net2280_ep, ep); ep = container_of(_ep, struct net2280_ep, ep);
if (!_ep || !desc || ep->desc || _ep->name == ep0name if (!_ep || !desc || ep->desc || _ep->name == ep0name ||
|| desc->bDescriptorType != USB_DT_ENDPOINT) desc->bDescriptorType != USB_DT_ENDPOINT)
return -EINVAL; return -EINVAL;
dev = ep->dev; dev = ep->dev;
if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) 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); tmp = (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
if (tmp == USB_ENDPOINT_XFER_INT) { if (tmp == USB_ENDPOINT_XFER_INT) {
/* erratum 0105 workaround prevents hs NYET */ /* erratum 0105 workaround prevents hs NYET */
if (dev->chiprev == 0100 if (dev->chiprev == 0100 &&
&& dev->gadget.speed == USB_SPEED_HIGH dev->gadget.speed == USB_SPEED_HIGH &&
&& !(desc->bEndpointAddress & USB_DIR_IN)) !(desc->bEndpointAddress & USB_DIR_IN))
writel(BIT(CLEAR_NAK_OUT_PACKETS_MODE), writel(BIT(CLEAR_NAK_OUT_PACKETS_MODE),
&ep->regs->ep_rsp); &ep->regs->ep_rsp);
} else if (tmp == USB_ENDPOINT_XFER_BULK) { } 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_RECEIVED_INTERRUPT) |
BIT(DATA_PACKET_TRANSMITTED_INTERRUPT) | BIT(DATA_PACKET_TRANSMITTED_INTERRUPT) |
BIT(DATA_OUT_PING_TOKEN_INTERRUPT) | BIT(DATA_OUT_PING_TOKEN_INTERRUPT) |
BIT(DATA_IN_TOKEN_INTERRUPT) BIT(DATA_IN_TOKEN_INTERRUPT),
, &ep->regs->ep_stat); &ep->regs->ep_stat);
/* fifo size is handled separately */ /* 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) | writel(BIT(DMA_ABORT_DONE_INTERRUPT) |
BIT(DMA_PAUSE_DONE_INTERRUPT) | BIT(DMA_PAUSE_DONE_INTERRUPT) |
BIT(DMA_SCATTER_GATHER_DONE_INTERRUPT) | BIT(DMA_SCATTER_GATHER_DONE_INTERRUPT) |
BIT(DMA_TRANSACTION_DONE_INTERRUPT) BIT(DMA_TRANSACTION_DONE_INTERRUPT),
/* | BIT(DMA_ABORT) */ /* | BIT(DMA_ABORT), */
, &ep->dma->dmastat); &ep->dma->dmastat);
dmastat = readl(&ep->dma->dmastat); dmastat = readl(&ep->dma->dmastat);
if (dmastat == 0x5002) { if (dmastat == 0x5002) {
@ -618,15 +618,15 @@ static void out_flush(struct net2280_ep *ep)
statp = &ep->regs->ep_stat; statp = &ep->regs->ep_stat;
writel(BIT(DATA_OUT_PING_TOKEN_INTERRUPT) | writel(BIT(DATA_OUT_PING_TOKEN_INTERRUPT) |
BIT(DATA_PACKET_RECEIVED_INTERRUPT) BIT(DATA_PACKET_RECEIVED_INTERRUPT),
, statp); statp);
writel(BIT(FIFO_FLUSH), statp); writel(BIT(FIFO_FLUSH), statp);
/* Make sure that stap is written */ /* Make sure that stap is written */
mb(); mb();
tmp = readl(statp); 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 */ /* 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; unsigned usec;
usec = 50; /* 64 byte bulk/interrupt */ 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 /* erratum 0106 ... packets coming in during fifo reads might
* be incompletely rejected. not all cases have workarounds. * be incompletely rejected. not all cases have workarounds.
*/ */
if (ep->dev->chiprev == 0x0100 if (ep->dev->chiprev == 0x0100 &&
&& ep->dev->gadget.speed == USB_SPEED_FULL) { ep->dev->gadget.speed == USB_SPEED_FULL) {
udelay(1); udelay(1);
tmp = readl(&ep->regs->ep_stat); tmp = readl(&ep->regs->ep_stat);
if ((tmp & BIT(NAK_OUT_PACKETS))) 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); (void) readl(&ep->regs->ep_rsp);
} }
return is_short || ((req->req.actual == req->req.length) return is_short || ((req->req.actual == req->req.length) &&
&& !req->req.zero); !req->req.zero);
} }
/* fill out dma descriptor to match a given request */ /* 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) if (ep->is_in)
dmacount |= BIT(DMA_DIRECTION); dmacount |= BIT(DMA_DIRECTION);
if ((!ep->is_in && (dmacount % ep->ep.maxpacket) != 0) if ((!ep->is_in && (dmacount % ep->ep.maxpacket) != 0) ||
|| ep->dev->pdev->device != 0x2280) ep->dev->pdev->device != 0x2280)
dmacount |= BIT(END_OF_CHAIN); dmacount |= BIT(END_OF_CHAIN);
req->valid = valid; req->valid = valid;
@ -836,8 +836,8 @@ static void start_dma(struct net2280_ep *ep, struct net2280_request *req)
/* dma irq, faking scatterlist status */ /* dma irq, faking scatterlist status */
req->td->dmacount = cpu_to_le32(req->req.length - tmp); req->td->dmacount = cpu_to_le32(req->req.length - tmp);
writel(BIT(DMA_DONE_INTERRUPT_ENABLE) writel(BIT(DMA_DONE_INTERRUPT_ENABLE) | tmp,
| tmp, &dma->dmacount); &dma->dmacount);
req->td->dmadesc = 0; req->td->dmadesc = 0;
req->valid = 1; req->valid = 1;
@ -1120,8 +1120,8 @@ static void scan_dma_completions(struct net2280_ep *ep)
/* single transfer mode */ /* single transfer mode */
dma_done(ep, req, tmp, 0); dma_done(ep, req, tmp, 0);
break; break;
} else if (!ep->is_in } else if (!ep->is_in &&
&& (req->req.length % ep->ep.maxpacket) != 0) { (req->req.length % ep->ep.maxpacket) != 0) {
tmp = readl(&ep->regs->ep_stat); tmp = readl(&ep->regs->ep_stat);
if (ep->dev->pdev->vendor == PCI_VENDOR_ID_PLX) if (ep->dev->pdev->vendor == PCI_VENDOR_ID_PLX)
return dma_done(ep, req, tmp, 0); 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), writel(le32_to_cpu(req->td->dmadesc),
&ep->dma->dmadesc); &ep->dma->dmadesc);
if (req->td->dmacount & dma_done_ie) if (req->td->dmacount & dma_done_ie)
writel(readl(&ep->dma->dmacount) writel(readl(&ep->dma->dmacount) |
| le32_to_cpu(dma_done_ie), le32_to_cpu(dma_done_ie),
&ep->dma->dmacount); &ep->dma->dmacount);
} else { } else {
struct net2280_request *prev; struct net2280_request *prev;
@ -2255,8 +2255,8 @@ static void ep0_start_228x(struct net2280 *dev)
{ {
writel(BIT(CLEAR_EP_HIDE_STATUS_PHASE) | writel(BIT(CLEAR_EP_HIDE_STATUS_PHASE) |
BIT(CLEAR_NAK_OUT_PACKETS) | BIT(CLEAR_NAK_OUT_PACKETS) |
BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE),
, &dev->epregs[0].ep_rsp); &dev->epregs[0].ep_rsp);
/* /*
* hardware optionally handles a bunch of standard requests * hardware optionally handles a bunch of standard requests
@ -2268,8 +2268,8 @@ static void ep0_start_228x(struct net2280 *dev)
BIT(SET_ADDRESS) | BIT(SET_ADDRESS) |
BIT(DEVICE_SET_CLEAR_DEVICE_REMOTE_WAKEUP) | BIT(DEVICE_SET_CLEAR_DEVICE_REMOTE_WAKEUP) |
BIT(GET_DEVICE_STATUS) | BIT(GET_DEVICE_STATUS) |
BIT(GET_INTERFACE_STATUS) BIT(GET_INTERFACE_STATUS),
, &dev->usb->stdrsp); &dev->usb->stdrsp);
writel(BIT(USB_ROOT_PORT_WAKEUP_ENABLE) | writel(BIT(USB_ROOT_PORT_WAKEUP_ENABLE) |
BIT(SELF_POWERED_USB_DEVICE) | BIT(SELF_POWERED_USB_DEVICE) |
BIT(REMOTE_WAKEUP_SUPPORT) | 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 */ /* enable irqs so we can see ep0 and general operation */
writel(BIT(SETUP_PACKET_INTERRUPT_ENABLE) | writel(BIT(SETUP_PACKET_INTERRUPT_ENABLE) |
BIT(ENDPOINT_0_INTERRUPT_ENABLE) BIT(ENDPOINT_0_INTERRUPT_ENABLE),
, &dev->regs->pciirqenb0); &dev->regs->pciirqenb0);
writel(BIT(PCI_INTERRUPT_ENABLE) | writel(BIT(PCI_INTERRUPT_ENABLE) |
BIT(ROOT_PORT_RESET_INTERRUPT_ENABLE) | BIT(ROOT_PORT_RESET_INTERRUPT_ENABLE) |
BIT(SUSPEND_REQUEST_CHANGE_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) * (dev->usb->xcvrdiag & FORCE_FULL_SPEED_MODE)
* "must not be used in normal operation" * "must not be used in normal operation"
*/ */
if (!driver || driver->max_speed < USB_SPEED_HIGH if (!driver || driver->max_speed < USB_SPEED_HIGH ||
|| !driver->setup) !driver->setup)
return -EINVAL; return -EINVAL;
dev = container_of(_gadget, struct net2280, gadget); dev = container_of(_gadget, struct net2280, gadget);
@ -2542,10 +2542,10 @@ static void handle_ep_small(struct net2280_ep *ep)
} }
mode = 2; mode = 2;
/* an extra OUT token is an error */ /* an extra OUT token is an error */
} else if (((t & BIT(DATA_OUT_PING_TOKEN_INTERRUPT)) } else if (((t & BIT(DATA_OUT_PING_TOKEN_INTERRUPT)) &&
&& req req &&
&& req->req.actual == req->req.length) req->req.actual == req->req.length) ||
|| (ep->responded && !req)) { (ep->responded && !req)) {
ep->dev->protocol_stall = 1; ep->dev->protocol_stall = 1;
set_halt(ep); set_halt(ep);
ep->stopped = 1; ep->stopped = 1;
@ -2576,8 +2576,8 @@ static void handle_ep_small(struct net2280_ep *ep)
* dma handles (M >= N), may empty the queue * dma handles (M >= N), may empty the queue
*/ */
scan_dma_completions(ep); scan_dma_completions(ep);
if (unlikely(list_empty(&ep->queue) if (unlikely(list_empty(&ep->queue) ||
|| ep->out_overflow)) { ep->out_overflow)) {
req = NULL; req = NULL;
break; break;
} }
@ -2611,10 +2611,10 @@ static void handle_ep_small(struct net2280_ep *ep)
} }
/* also flush to prevent erratum 0106 trouble */ /* also flush to prevent erratum 0106 trouble */
if (unlikely(ep->out_overflow if (unlikely(ep->out_overflow ||
|| (ep->dev->chiprev == 0x0100 (ep->dev->chiprev == 0x0100 &&
&& ep->dev->gadget.speed ep->dev->gadget.speed
== USB_SPEED_FULL))) { == USB_SPEED_FULL))) {
out_flush(ep); out_flush(ep);
ep->out_overflow = 0; 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 = readl(&ep->regs->ep_rsp);
val |= BIT(CLEAR_ENDPOINT_HALT) | val |= BIT(CLEAR_ENDPOINT_HALT) |
BIT(CLEAR_ENDPOINT_TOGGLE); BIT(CLEAR_ENDPOINT_TOGGLE);
writel(val writel(val,
/* | BIT(CLEAR_NAK_PACKETS)*/ /* | BIT(CLEAR_NAK_PACKETS),*/
, &ep->regs->ep_rsp); &ep->regs->ep_rsp);
ep->is_halt = 0; ep->is_halt = 0;
val = readl(&ep->regs->ep_rsp); 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_RECEIVED_INTERRUPT) |
BIT(DATA_PACKET_TRANSMITTED_INTERRUPT) | BIT(DATA_PACKET_TRANSMITTED_INTERRUPT) |
BIT(DATA_OUT_PING_TOKEN_INTERRUPT) | BIT(DATA_OUT_PING_TOKEN_INTERRUPT) |
BIT(DATA_IN_TOKEN_INTERRUPT) BIT(DATA_IN_TOKEN_INTERRUPT),
, &ep->regs->ep_stat); &ep->regs->ep_stat);
} }
u.raw[0] = readl(&dev->usb->setup0123); u.raw[0] = readl(&dev->usb->setup0123);
u.raw[1] = readl(&dev->usb->setup4567); 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 */ /* hw handles device features */
if (u.r.bRequestType != USB_RECIP_ENDPOINT) if (u.r.bRequestType != USB_RECIP_ENDPOINT)
goto delegate; goto delegate;
if (w_value != USB_ENDPOINT_HALT if (w_value != USB_ENDPOINT_HALT || w_length != 0)
|| w_length != 0)
goto do_stall; goto do_stall;
e = get_ep_by_addr(dev, w_index); e = get_ep_by_addr(dev, w_index);
if (!e) if (!e)
@ -3233,8 +3232,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
/* hw handles device features */ /* hw handles device features */
if (u.r.bRequestType != USB_RECIP_ENDPOINT) if (u.r.bRequestType != USB_RECIP_ENDPOINT)
goto delegate; goto delegate;
if (w_value != USB_ENDPOINT_HALT if (w_value != USB_ENDPOINT_HALT || w_length != 0)
|| w_length != 0)
goto do_stall; goto do_stall;
e = get_ep_by_addr(dev, w_index); e = get_ep_by_addr(dev, w_index);
if (!e) if (!e)
@ -3326,12 +3324,11 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat)
*/ */
if (stat & tmp) { if (stat & tmp) {
writel(tmp, &dev->regs->irqstat1); writel(tmp, &dev->regs->irqstat1);
if ((((stat & BIT(ROOT_PORT_RESET_INTERRUPT)) if ((((stat & BIT(ROOT_PORT_RESET_INTERRUPT)) &&
&& ((readl(&dev->usb->usbstat) & mask) (readl(&dev->usb->usbstat) & mask)) ||
== 0)) ((readl(&dev->usb->usbctl) &
|| ((readl(&dev->usb->usbctl) BIT(VBUS_PIN)) == 0)) &&
& BIT(VBUS_PIN)) == 0) (dev->gadget.speed != USB_SPEED_UNKNOWN)) {
) && (dev->gadget.speed != USB_SPEED_UNKNOWN)) {
DEBUG(dev, "disconnect %s\n", DEBUG(dev, "disconnect %s\n",
dev->driver->driver.name); dev->driver->driver.name);
stop_activity(dev, dev->driver); stop_activity(dev, dev->driver);
@ -3560,7 +3557,7 @@ static void net2280_remove(struct pci_dev *pdev)
pci_disable_device(pdev); pci_disable_device(pdev);
device_remove_file(&pdev->dev, &dev_attr_registers); device_remove_file(&pdev->dev, &dev_attr_registers);
INFO (dev, "unbind\n"); INFO(dev, "unbind\n");
} }
/* wrap this driver around the specified device, but /* wrap this driver around the specified device, but
@ -3783,29 +3780,29 @@ static const struct pci_device_id pci_ids[] = { {
.device = 0x2280, .device = 0x2280,
.subvendor = PCI_ANY_ID, .subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID, .subdevice = PCI_ANY_ID,
}, { }, {
.class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe), .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
.class_mask = ~0, .class_mask = ~0,
.vendor = PCI_VENDOR_ID_PLX_LEGACY, .vendor = PCI_VENDOR_ID_PLX_LEGACY,
.device = 0x2282, .device = 0x2282,
.subvendor = PCI_ANY_ID, .subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID, .subdevice = PCI_ANY_ID,
}, },
{ {
.class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe), .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
.class_mask = ~0, .class_mask = ~0,
.vendor = PCI_VENDOR_ID_PLX, .vendor = PCI_VENDOR_ID_PLX,
.device = 0x3380, .device = 0x3380,
.subvendor = PCI_ANY_ID, .subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID, .subdevice = PCI_ANY_ID,
}, },
{ {
.class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe), .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
.class_mask = ~0, .class_mask = ~0,
.vendor = PCI_VENDOR_ID_PLX, .vendor = PCI_VENDOR_ID_PLX,
.device = 0x3382, .device = 0x3382,
.subvendor = PCI_ANY_ID, .subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID, .subdevice = PCI_ANY_ID,
}, },
{ /* end: all zeroes */ } { /* end: all zeroes */ }
}; };

4
drivers/usb/gadget/net2280.h
View file

@ -117,8 +117,8 @@ static inline void allow_status(struct net2280_ep *ep)
/* ep0 only */ /* ep0 only */
writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) | writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) |
BIT(CLEAR_NAK_OUT_PACKETS) | BIT(CLEAR_NAK_OUT_PACKETS) |
BIT(CLEAR_NAK_OUT_PACKETS_MODE) BIT(CLEAR_NAK_OUT_PACKETS_MODE),
, &ep->regs->ep_rsp); &ep->regs->ep_rsp);
ep->stopped = 1; ep->stopped = 1;
} }