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usb: gadget: goku_udc: convert to udc_start/udc_stop

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Mechanical change making use of the new (can we
still call it new ?) interface for registering
UDC drivers.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2013-01-24 10:40:21 +02:00
parent 8de94fffad
commit 950b3c1dac
2 changed files with 15 additions and 56 deletions
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70
drivers/usb/gadget/goku_udc.c
View File

@ -993,14 +993,15 @@ static int goku_get_frame(struct usb_gadget *_gadget)
return -EOPNOTSUPP;
}
static int goku_start(struct usb_gadget_driver *driver,
int (*bind)(struct usb_gadget *, struct usb_gadget_driver *));
static int goku_stop(struct usb_gadget_driver *driver);
static int goku_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
static int goku_udc_stop(struct usb_gadget *g,
struct usb_gadget_driver *driver);
static const struct usb_gadget_ops goku_ops = {
.get_frame = goku_get_frame,
.start = goku_start,
.stop = goku_stop,
.udc_start = goku_udc_start,
.udc_stop = goku_udc_stop,
// no remote wakeup
// not selfpowered
};
@ -1339,50 +1340,28 @@ static void udc_enable(struct goku_udc *dev)
* - one function driver, initted second
*/
static struct goku_udc *the_controller;
/* when a driver is successfully registered, it will receive
* control requests including set_configuration(), which enables
* non-control requests. then usb traffic follows until a
* disconnect is reported. then a host may connect again, or
* the driver might get unbound.
*/
static int goku_start(struct usb_gadget_driver *driver,
int (*bind)(struct usb_gadget *, struct usb_gadget_driver *))
static int goku_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver)
{
struct goku_udc *dev = the_controller;
int retval;
if (!driver
|| driver->max_speed < USB_SPEED_FULL
|| !bind
|| !driver->disconnect
|| !driver->setup)
return -EINVAL;
if (!dev)
return -ENODEV;
if (dev->driver)
return -EBUSY;
struct goku_udc *dev = to_goku_udc(g);
/* hook up the driver */
driver->driver.bus = NULL;
dev->driver = driver;
dev->gadget.dev.driver = &driver->driver;
retval = bind(&dev->gadget, driver);
if (retval) {
DBG(dev, "bind to driver %s --> error %d\n",
driver->driver.name, retval);
dev->driver = NULL;
dev->gadget.dev.driver = NULL;
return retval;
}
/* then enable host detection and ep0; and we're ready
/*
* then enable host detection and ep0; and we're ready
* for set_configuration as well as eventual disconnect.
*/
udc_enable(dev);
DBG(dev, "registered gadget driver '%s'\n", driver->driver.name);
return 0;
}
@ -1400,35 +1379,23 @@ stop_activity(struct goku_udc *dev, struct usb_gadget_driver *driver)
udc_reset (dev);
for (i = 0; i < 4; i++)
nuke(&dev->ep [i], -ESHUTDOWN);
if (driver) {
spin_unlock(&dev->lock);
driver->disconnect(&dev->gadget);
spin_lock(&dev->lock);
}
if (dev->driver)
udc_enable(dev);
}
static int goku_stop(struct usb_gadget_driver *driver)
static int goku_udc_stop(struct usb_gadget *g,
struct usb_gadget_driver *driver)
{
struct goku_udc *dev = the_controller;
struct goku_udc *dev = to_goku_udc(g);
unsigned long flags;
if (!dev)
return -ENODEV;
if (!driver || driver != dev->driver || !driver->unbind)
return -EINVAL;
spin_lock_irqsave(&dev->lock, flags);
dev->driver = NULL;
stop_activity(dev, driver);
spin_unlock_irqrestore(&dev->lock, flags);
driver->unbind(&dev->gadget);
dev->gadget.dev.driver = NULL;
DBG(dev, "unregistered driver '%s'\n", driver->driver.name);
return 0;
}
@ -1754,7 +1721,6 @@ static void goku_remove(struct pci_dev *pdev)
pci_set_drvdata(pdev, NULL);
dev->regs = NULL;
the_controller = NULL;
INFO(dev, "unbind\n");
}
@ -1770,13 +1736,6 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id)
void __iomem *base = NULL;
int retval;
/* if you want to support more than one controller in a system,
* usb_gadget_driver_{register,unregister}() must change.
*/
if (the_controller) {
pr_warning("ignoring %s\n", pci_name(pdev));
return -EBUSY;
}
if (!pdev->irq) {
printk(KERN_ERR "Check PCI %s IRQ setup!\n", pci_name(pdev));
retval = -ENODEV;
@ -1851,7 +1810,6 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id)
create_proc_read_entry(proc_node_name, 0, NULL, udc_proc_read, dev);
#endif
the_controller = dev;
retval = device_register(&dev->gadget.dev);
if (retval) {
put_device(&dev->gadget.dev);

1
drivers/usb/gadget/goku_udc.h
View File

@ -261,6 +261,7 @@ struct goku_udc {
/* statistics... */
unsigned long irqs;
};
#define to_goku_udc(g) (container_of((g), struct goku_udc, gadget))
/*-------------------------------------------------------------------------*/