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path: root/drivers/usb/gadget/net2280.c
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Diffstat (limited to 'drivers/usb/gadget/net2280.c')
-rw-r--r--drivers/usb/gadget/net2280.c85
1 files changed, 47 insertions, 38 deletions
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index ac335af154b..300b3a71383 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -9,7 +9,7 @@
* CODE STATUS HIGHLIGHTS
*
* This driver should work well with most "gadget" drivers, including
- * the File Storage, Serial, and Ethernet/RNDIS gadget drivers
+ * the Mass Storage, Serial, and Ethernet/RNDIS gadget drivers
* as well as Gadget Zero and Gadgetfs.
*
* DMA is enabled by default. Drivers using transfer queues might use
@@ -65,7 +65,6 @@
#define DRIVER_DESC "PLX NET228x USB Peripheral Controller"
#define DRIVER_VERSION "2005 Sept 27"
-#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define EP_DONTUSE 13 /* nonzero */
#define USE_RDK_LEDS /* GPIO pins control three LEDs */
@@ -116,6 +115,10 @@ static bool enable_suspend = 0;
/* "modprobe net2280 enable_suspend=1" etc */
module_param (enable_suspend, bool, S_IRUGO);
+/* force full-speed operation */
+static bool full_speed;
+module_param(full_speed, bool, 0444);
+MODULE_PARM_DESC(full_speed, "force full-speed mode -- for testing only!");
#define DIR_STRING(bAddress) (((bAddress) & USB_DIR_IN) ? "in" : "out")
@@ -126,7 +129,7 @@ static char *type_string (u8 bmAttributes)
case USB_ENDPOINT_XFER_BULK: return "bulk";
case USB_ENDPOINT_XFER_ISOC: return "iso";
case USB_ENDPOINT_XFER_INT: return "intr";
- };
+ }
return "control";
}
#endif
@@ -290,7 +293,7 @@ static void ep_reset (struct net2280_regs __iomem *regs, struct net2280_ep *ep)
ep->desc = NULL;
INIT_LIST_HEAD (&ep->queue);
- ep->ep.maxpacket = ~0;
+ usb_ep_set_maxpacket_limit(&ep->ep, ~0);
ep->ep.ops = &net2280_ep_ops;
/* disable the dma, irqs, endpoint... */
@@ -402,7 +405,6 @@ net2280_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags)
if (!req)
return NULL;
- req->req.dma = DMA_ADDR_INVALID;
INIT_LIST_HEAD (&req->queue);
/* this dma descriptor may be swapped with the previous dummy */
@@ -416,7 +418,6 @@ net2280_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags)
return NULL;
}
td->dmacount = 0; /* not VALID */
- td->dmaaddr = cpu_to_le32 (DMA_ADDR_INVALID);
td->dmadesc = td->dmaaddr;
req->td = td;
}
@@ -1423,8 +1424,8 @@ static const struct usb_gadget_ops net2280_ops = {
*/
/* "function" sysfs attribute */
-static ssize_t
-show_function (struct device *_dev, struct device_attribute *attr, char *buf)
+static ssize_t function_show(struct device *_dev, struct device_attribute *attr,
+ char *buf)
{
struct net2280 *dev = dev_get_drvdata (_dev);
@@ -1434,10 +1435,10 @@ show_function (struct device *_dev, struct device_attribute *attr, char *buf)
return 0;
return scnprintf (buf, PAGE_SIZE, "%s\n", dev->driver->function);
}
-static DEVICE_ATTR (function, S_IRUGO, show_function, NULL);
+static DEVICE_ATTR_RO(function);
-static ssize_t net2280_show_registers(struct device *_dev,
- struct device_attribute *attr, char *buf)
+static ssize_t registers_show(struct device *_dev,
+ struct device_attribute *attr, char *buf)
{
struct net2280 *dev;
char *next;
@@ -1589,10 +1590,10 @@ static ssize_t net2280_show_registers(struct device *_dev,
return PAGE_SIZE - size;
}
-static DEVICE_ATTR(registers, S_IRUGO, net2280_show_registers, NULL);
+static DEVICE_ATTR_RO(registers);
-static ssize_t
-show_queues (struct device *_dev, struct device_attribute *attr, char *buf)
+static ssize_t queues_show(struct device *_dev, struct device_attribute *attr,
+ char *buf)
{
struct net2280 *dev;
char *next;
@@ -1629,7 +1630,7 @@ show_queues (struct device *_dev, struct device_attribute *attr, char *buf)
val = "intr"; break;
default:
val = "iso"; break;
- }; val; }),
+ } val; }),
usb_endpoint_maxp (d) & 0x1fff,
ep->dma ? "dma" : "pio", ep->fifo_size
);
@@ -1689,7 +1690,7 @@ done:
spin_unlock_irqrestore (&dev->lock, flags);
return PAGE_SIZE - size;
}
-static DEVICE_ATTR (queues, S_IRUGO, show_queues, NULL);
+static DEVICE_ATTR_RO(queues);
#else
@@ -1804,9 +1805,9 @@ static void usb_reinit (struct net2280 *dev)
ep->regs = &dev->epregs [tmp];
ep_reset (dev->regs, ep);
}
- dev->ep [0].ep.maxpacket = 64;
- dev->ep [5].ep.maxpacket = 64;
- dev->ep [6].ep.maxpacket = 64;
+ usb_ep_set_maxpacket_limit(&dev->ep [0].ep, 64);
+ usb_ep_set_maxpacket_limit(&dev->ep [5].ep, 64);
+ usb_ep_set_maxpacket_limit(&dev->ep [6].ep, 64);
dev->gadget.ep0 = &dev->ep [0].ep;
dev->ep [0].stopped = 0;
@@ -1892,13 +1893,16 @@ static int net2280_start(struct usb_gadget *_gadget,
dev->softconnect = 1;
driver->driver.bus = NULL;
dev->driver = driver;
- dev->gadget.dev.driver = &driver->driver;
retval = device_create_file (&dev->pdev->dev, &dev_attr_function);
if (retval) goto err_unbind;
retval = device_create_file (&dev->pdev->dev, &dev_attr_queues);
if (retval) goto err_func;
+ /* Enable force-full-speed testing mode, if desired */
+ if (full_speed)
+ writel(1 << FORCE_FULL_SPEED_MODE, &dev->usb->xcvrdiag);
+
/* ... then enable host detection and ep0; and we're ready
* for set_configuration as well as eventual disconnect.
*/
@@ -1916,8 +1920,6 @@ static int net2280_start(struct usb_gadget *_gadget,
err_func:
device_remove_file (&dev->pdev->dev, &dev_attr_function);
err_unbind:
- driver->unbind (&dev->gadget);
- dev->gadget.dev.driver = NULL;
dev->driver = NULL;
return retval;
}
@@ -1938,6 +1940,13 @@ stop_activity (struct net2280 *dev, struct usb_gadget_driver *driver)
for (i = 0; i < 7; i++)
nuke (&dev->ep [i]);
+ /* report disconnect; the driver is already quiesced */
+ if (driver) {
+ spin_unlock(&dev->lock);
+ driver->disconnect(&dev->gadget);
+ spin_lock(&dev->lock);
+ }
+
usb_reinit (dev);
}
@@ -1953,14 +1962,19 @@ static int net2280_stop(struct usb_gadget *_gadget,
stop_activity (dev, driver);
spin_unlock_irqrestore (&dev->lock, flags);
- dev->gadget.dev.driver = NULL;
dev->driver = NULL;
net2280_led_active (dev, 0);
+
+ /* Disable full-speed test mode */
+ writel(0, &dev->usb->xcvrdiag);
+
device_remove_file (&dev->pdev->dev, &dev_attr_function);
device_remove_file (&dev->pdev->dev, &dev_attr_queues);
- DEBUG (dev, "unregistered driver '%s'\n", driver->driver.name);
+ DEBUG(dev, "unregistered driver '%s'\n",
+ driver ? driver->driver.name : "");
+
return 0;
}
@@ -2054,7 +2068,7 @@ static void handle_ep_small (struct net2280_ep *ep)
return;
/* manual DMA queue advance after short OUT */
- if (likely (ep->dma != 0)) {
+ if (likely (ep->dma)) {
if (t & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)) {
u32 count;
int stopped = ep->stopped;
@@ -2312,7 +2326,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
/* hw handles device and interface status */
if (u.r.bRequestType != (USB_DIR_IN|USB_RECIP_ENDPOINT))
goto delegate;
- if ((e = get_ep_by_addr (dev, w_index)) == 0
+ if ((e = get_ep_by_addr (dev, w_index)) == NULL
|| w_length > 2)
goto do_stall;
@@ -2340,7 +2354,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
if (w_value != USB_ENDPOINT_HALT
|| w_length != 0)
goto do_stall;
- if ((e = get_ep_by_addr (dev, w_index)) == 0)
+ if ((e = get_ep_by_addr (dev, w_index)) == NULL)
goto do_stall;
if (e->wedged) {
VDEBUG(dev, "%s wedged, halt not cleared\n",
@@ -2362,7 +2376,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
if (w_value != USB_ENDPOINT_HALT
|| w_length != 0)
goto do_stall;
- if ((e = get_ep_by_addr (dev, w_index)) == 0)
+ if ((e = get_ep_by_addr (dev, w_index)) == NULL)
goto do_stall;
if (e->ep.name == ep0name)
goto do_stall;
@@ -2667,9 +2681,7 @@ static void net2280_remove (struct pci_dev *pdev)
pci_resource_len (pdev, 0));
if (dev->enabled)
pci_disable_device (pdev);
- device_unregister (&dev->gadget.dev);
device_remove_file (&pdev->dev, &dev_attr_registers);
- pci_set_drvdata (pdev, NULL);
INFO (dev, "unbind\n");
}
@@ -2699,10 +2711,6 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
dev->gadget.max_speed = USB_SPEED_HIGH;
/* the "gadget" abstracts/virtualizes the controller */
- dev_set_name(&dev->gadget.dev, "gadget");
- dev->gadget.dev.parent = &pdev->dev;
- dev->gadget.dev.dma_mask = pdev->dev.dma_mask;
- dev->gadget.dev.release = gadget_release;
dev->gadget.name = driver_name;
/* now all the pci goodies ... */
@@ -2784,7 +2792,6 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
goto done;
}
td->dmacount = 0; /* not VALID */
- td->dmaaddr = cpu_to_le32 (DMA_ADDR_INVALID);
td->dmadesc = td->dmaaddr;
dev->ep [i].dummy = td;
}
@@ -2811,12 +2818,11 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
use_dma
? (use_dma_chaining ? "chaining" : "enabled")
: "disabled");
- retval = device_register (&dev->gadget.dev);
- if (retval) goto done;
retval = device_create_file (&pdev->dev, &dev_attr_registers);
if (retval) goto done;
- retval = usb_add_gadget_udc(&pdev->dev, &dev->gadget);
+ retval = usb_add_gadget_udc_release(&pdev->dev, &dev->gadget,
+ gadget_release);
if (retval)
goto done;
return 0;
@@ -2841,6 +2847,9 @@ static void net2280_shutdown (struct pci_dev *pdev)
/* disable the pullup so the host will think we're gone */
writel (0, &dev->usb->usbctl);
+
+ /* Disable full-speed test mode */
+ writel(0, &dev->usb->xcvrdiag);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 19:15:56 +0000