diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-14 14:57:16 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-14 14:57:16 -0800 |
commit | e7cf773d431a63a2417902696fcc9e0ebdc83bbe (patch) | |
tree | 86dbdceb7d91226507a3af0d57e03b0ca664b22e /drivers/usb/gadget/udc/net2280.c | |
parent | 7a02d089695a1217992434f03a78aa32bad85b5c (diff) | |
parent | 81e1dadfb5b2d47aa513ad60b1c9cf0ea17b6514 (diff) | |
download | op-kernel-dev-e7cf773d431a63a2417902696fcc9e0ebdc83bbe.zip op-kernel-dev-e7cf773d431a63a2417902696fcc9e0ebdc83bbe.tar.gz |
Merge tag 'usb-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB updates from Greg KH:
"Here's the big set of USB and PHY patches for 3.19-rc1.
The normal churn in the USB gadget area is in here, as well as xhci
and other individual USB driver updates. The PHY tree is also in
here, as there were dependancies on the USB tree.
All of these have been in linux-next"
* tag 'usb-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (351 commits)
arm: omap3: twl: remove usb phy init data
usbip: fix error handling in stub_probe()
usb: gadget: udc: missing curly braces
USB: mos7720: delete some unneeded code
wusb: replace memset by memzero_explicit
usbip: remove unneeded structure
usb: xhci: fix comment for PORT_DEV_REMOVE
xhci: don't use the same variable for stopped and halted rings current TD
xhci: clear extra bits from slot context when setting max exit latency
xhci: cleanup finish_td function
USB: adutux: NULL dereferences on disconnect
usb: chipidea: fix platform_no_drv_owner.cocci warnings
usb: chipidea: Fixed a few typos in comments
Documentation: bindings: add doc for the USB2 ChipIdea USB driver
usb: chipidea: add a usb2 driver for ci13xxx
usb: chipidea: fix phy handling
usb: chipidea: remove duplicate dev_set_drvdata for host_start
usb: chipidea: parameter 'mode' isn't needed for hw_device_reset
usb: chipidea: add controller reset API
usb: chipidea: remove flag CI_HDRC_REQUIRE_TRANSCEIVER
...
Diffstat (limited to 'drivers/usb/gadget/udc/net2280.c')
-rw-r--r-- | drivers/usb/gadget/udc/net2280.c | 65 |
1 files changed, 40 insertions, 25 deletions
diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index 8d13337..d6411e0 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -1118,10 +1118,10 @@ static void scan_dma_completions(struct net2280_ep *ep) break; } else if (!ep->is_in && (req->req.length % ep->ep.maxpacket) != 0) { - tmp = readl(&ep->regs->ep_stat); if (ep->dev->quirks & PLX_SUPERSPEED) return dma_done(ep, req, tmp, 0); + tmp = readl(&ep->regs->ep_stat); /* AVOID TROUBLE HERE by not issuing short reads from * your gadget driver. That helps avoids errata 0121, * 0122, and 0124; not all cases trigger the warning. @@ -1548,8 +1548,7 @@ static int net2280_pullup(struct usb_gadget *_gadget, int is_on) static int net2280_start(struct usb_gadget *_gadget, struct usb_gadget_driver *driver); -static int net2280_stop(struct usb_gadget *_gadget, - struct usb_gadget_driver *driver); +static int net2280_stop(struct usb_gadget *_gadget); static const struct usb_gadget_ops net2280_ops = { .get_frame = net2280_get_frame, @@ -2397,11 +2396,6 @@ static int net2280_start(struct usb_gadget *_gadget, ep0_start(dev); - ep_dbg(dev, "%s ready, usbctl %08x stdrsp %08x\n", - driver->driver.name, - readl(&dev->usb->usbctl), - readl(&dev->usb->stdrsp)); - /* pci writes may still be posted */ return 0; @@ -2437,8 +2431,7 @@ static void stop_activity(struct net2280 *dev, struct usb_gadget_driver *driver) usb_reinit(dev); } -static int net2280_stop(struct usb_gadget *_gadget, - struct usb_gadget_driver *driver) +static int net2280_stop(struct usb_gadget *_gadget) { struct net2280 *dev; unsigned long flags; @@ -2446,11 +2439,9 @@ static int net2280_stop(struct usb_gadget *_gadget, dev = container_of(_gadget, struct net2280, gadget); spin_lock_irqsave(&dev->lock, flags); - stop_activity(dev, driver); + stop_activity(dev, NULL); spin_unlock_irqrestore(&dev->lock, flags); - dev->driver = NULL; - net2280_led_active(dev, 0); /* Disable full-speed test mode */ @@ -2460,8 +2451,7 @@ static int net2280_stop(struct usb_gadget *_gadget, device_remove_file(&dev->pdev->dev, &dev_attr_function); device_remove_file(&dev->pdev->dev, &dev_attr_queues); - ep_dbg(dev, "unregistered driver '%s'\n", - driver ? driver->driver.name : ""); + dev->driver = NULL; return 0; } @@ -3318,17 +3308,42 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat) * only indicates a change in the reset state). */ if (stat & tmp) { + bool reset = false; + bool disconnect = false; + + /* + * Ignore disconnects and resets if the speed hasn't been set. + * VBUS can bounce and there's always an initial reset. + */ 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)) { - ep_dbg(dev, "disconnect %s\n", - dev->driver->driver.name); - stop_activity(dev, dev->driver); - ep0_start(dev); - return; + if (dev->gadget.speed != USB_SPEED_UNKNOWN) { + if ((stat & BIT(VBUS_INTERRUPT)) && + (readl(&dev->usb->usbctl) & + BIT(VBUS_PIN)) == 0) { + disconnect = true; + ep_dbg(dev, "disconnect %s\n", + dev->driver->driver.name); + } else if ((stat & BIT(ROOT_PORT_RESET_INTERRUPT)) && + (readl(&dev->usb->usbstat) & mask) + == 0) { + reset = true; + ep_dbg(dev, "reset %s\n", + dev->driver->driver.name); + } + + if (disconnect || reset) { + stop_activity(dev, dev->driver); + ep0_start(dev); + spin_unlock(&dev->lock); + if (reset) + usb_gadget_udc_reset + (&dev->gadget, dev->driver); + else + (dev->driver->disconnect) + (&dev->gadget); + spin_lock(&dev->lock); + return; + } } stat &= ~tmp; |