static void xpad_disconnect(struct usb_interface *intf) //设备断开函数
{
struct usb_xpad *xpad = usb_get_intfdata (intf); //根据usb接口得到手柄设备信息
input_unregister_device(xpad->dev); //注销 该设备
//释放内核空间
xpad_deinit_output(xpad);
usb_free_urb(xpad->irq_in);
usb_free_coherent(xpad->udev, XPAD_PKT_LEN,
xpad->idata, xpad->idata_dma);
kfree(xpad->bdata);
kfree(xpad);
usb_set_intfdata(intf, NULL);
}
static void xpad_disconnect(struct usb_interface *intf)
{
struct usb_xpad *xpad = usb_get_intfdata (intf);
usb_set_intfdata(intf, NULL);
if (xpad) {
cancel_work_sync(&xpad->submit_urb);
xpad_led_disconnect(xpad);
input_unregister_device(xpad->dev);
xpad_deinit_output(xpad);
if (xpad->xtype == XTYPE_XBOX360W)
usb_kill_urb(xpad->irq_in);
usb_free_urb(xpad->irq_in);
usb_free_coherent(xpad->udev, XPAD_PKT_LEN,
xpad->idata, xpad->idata_dma);
kfree(xpad);
}
}
static void xpad_disconnect(struct usb_interface *intf)
{
struct usb_xpad *xpad = usb_get_intfdata (intf);
xpad_deinit_input(xpad);
xpad_deinit_output(xpad);
if (xpad->xtype == XTYPE_XBOX360W) {
usb_kill_urb(xpad->irq_in);
}
usb_free_urb(xpad->irq_in);
usb_free_coherent(xpad->udev, XPAD_PKT_LEN,
xpad->idata, xpad->idata_dma);
kfree(xpad);
usb_set_intfdata(intf, NULL);
}
static void xpad_disconnect(struct usb_interface *intf)
{
struct usb_xpad *xpad = usb_get_intfdata (intf);
if (xpad->pad_present)
xpad_deinit_input(xpad);
xpad_stop_communication(xpad);
xpad_deinit_output(xpad);
usb_free_urb(xpad->irq_in);
usb_free_coherent(xpad->udev, XPAD_PKT_LEN,
xpad->idata, xpad->idata_dma);
kfree(xpad);
usb_set_intfdata(intf, NULL);
}
static void xpad_disconnect(struct usb_interface *intf)
{
struct usb_xpad *xpad = usb_get_intfdata (intf);
usb_set_intfdata(intf, NULL);
if (xpad) {
xpad_led_disconnect(xpad);
input_unregister_device(xpad->dev);
xpad_deinit_output(xpad);
if (xpad->xtype == XTYPE_XBOX360W) {
usb_kill_urb(xpad->bulk_out);
usb_free_urb(xpad->bulk_out);
usb_kill_urb(xpad->irq_in);
}
usb_free_urb(xpad->irq_in);
usb_buffer_free(xpad->udev, XPAD_PKT_LEN,
xpad->idata, xpad->idata_dma);
kfree(xpad);
}
}
static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_xpad *xpad;
struct input_dev *input_dev;
struct usb_endpoint_descriptor *ep_irq_in;
int ep_irq_in_idx;
int i, error;
for (i = 0; xpad_device[i].idVendor; i++) {
if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) &&
(le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct))
break;
}
if (xpad_device[i].xtype == XTYPE_XBOXONE &&
intf->cur_altsetting->desc.bInterfaceNumber != 0) {
/*
* The Xbox One controller lists three interfaces all with the
* same interface class, subclass and protocol. Differentiate by
* interface number.
*/
return -ENODEV;
}
xpad = kzalloc(sizeof(struct usb_xpad), GFP_KERNEL);
input_dev = input_allocate_device();
if (!xpad || !input_dev) {
error = -ENOMEM;
goto fail1;
}
xpad->idata = usb_alloc_coherent(udev, XPAD_PKT_LEN,
GFP_KERNEL, &xpad->idata_dma);
if (!xpad->idata) {
error = -ENOMEM;
goto fail1;
}
xpad->irq_in = usb_alloc_urb(0, GFP_KERNEL);
if (!xpad->irq_in) {
error = -ENOMEM;
goto fail2;
}
xpad->udev = udev;
xpad->intf = intf;
xpad->mapping = xpad_device[i].mapping;
xpad->xtype = xpad_device[i].xtype;
if (xpad->xtype == XTYPE_UNKNOWN) {
if (intf->cur_altsetting->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC) {
if (intf->cur_altsetting->desc.bInterfaceProtocol == 129)
xpad->xtype = XTYPE_XBOX360W;
else
xpad->xtype = XTYPE_XBOX360;
} else
xpad->xtype = XTYPE_XBOX;
if (dpad_to_buttons)
xpad->mapping |= MAP_DPAD_TO_BUTTONS;
if (triggers_to_buttons)
xpad->mapping |= MAP_TRIGGERS_TO_BUTTONS;
if (sticks_to_null)
xpad->mapping |= MAP_STICKS_TO_NULL;
}
xpad->dev = input_dev;
usb_make_path(udev, xpad->phys, sizeof(xpad->phys));
strlcat(xpad->phys, "/input0", sizeof(xpad->phys));
input_dev->name = xpad_device[i].name;
input_dev->phys = xpad->phys;
usb_to_input_id(udev, &input_dev->id);
input_dev->dev.parent = &intf->dev;
input_set_drvdata(input_dev, xpad);
input_dev->open = xpad_open;
input_dev->close = xpad_close;
input_dev->evbit[0] = BIT_MASK(EV_KEY);
if (!(xpad->mapping & MAP_STICKS_TO_NULL)) {
input_dev->evbit[0] |= BIT_MASK(EV_ABS);
/* set up axes */
for (i = 0; xpad_abs[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs[i]);
}
/* set up standard buttons */
for (i = 0; xpad_common_btn[i] >= 0; i++)
__set_bit(xpad_common_btn[i], input_dev->keybit);
/* set up model-specific ones */
if (xpad->xtype == XTYPE_XBOX360 || xpad->xtype == XTYPE_XBOX360W ||
xpad->xtype == XTYPE_XBOXONE) {
for (i = 0; xpad360_btn[i] >= 0; i++)
__set_bit(xpad360_btn[i], input_dev->keybit);
} else {
for (i = 0; xpad_btn[i] >= 0; i++)
__set_bit(xpad_btn[i], input_dev->keybit);
}
if (xpad->mapping & MAP_DPAD_TO_BUTTONS) {
for (i = 0; xpad_btn_pad[i] >= 0; i++)
__set_bit(xpad_btn_pad[i], input_dev->keybit);
} else {
for (i = 0; xpad_abs_pad[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_pad[i]);
}
if (xpad->mapping & MAP_TRIGGERS_TO_BUTTONS) {
for (i = 0; xpad_btn_triggers[i] >= 0; i++)
__set_bit(xpad_btn_triggers[i], input_dev->keybit);
} else {
for (i = 0; xpad_abs_triggers[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_triggers[i]);
}
error = xpad_init_output(intf, xpad);
if (error)
goto fail3;
error = xpad_init_ff(xpad);
if (error)
goto fail4;
error = xpad_led_probe(xpad);
if (error)
goto fail5;
/* Xbox One controller has in/out endpoints swapped. */
ep_irq_in_idx = xpad->xtype == XTYPE_XBOXONE ? 1 : 0;
ep_irq_in = &intf->cur_altsetting->endpoint[ep_irq_in_idx].desc;
usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
xpad->idata, XPAD_PKT_LEN, xpad_irq_in,
xpad, ep_irq_in->bInterval);
xpad->irq_in->transfer_dma = xpad->idata_dma;
xpad->irq_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
error = input_register_device(xpad->dev);
if (error)
goto fail6;
usb_set_intfdata(intf, xpad);
if (xpad->xtype == XTYPE_XBOX360W) {
/*
* Setup the message to set the LEDs on the
* controller when it shows up
*/
xpad->bulk_out = usb_alloc_urb(0, GFP_KERNEL);
if (!xpad->bulk_out) {
error = -ENOMEM;
goto fail7;
}
xpad->bdata = kzalloc(XPAD_PKT_LEN, GFP_KERNEL);
if (!xpad->bdata) {
error = -ENOMEM;
goto fail8;
}
xpad->bdata[2] = 0x08;
switch (intf->cur_altsetting->desc.bInterfaceNumber) {
case 0:
xpad->bdata[3] = 0x42;
break;
case 2:
xpad->bdata[3] = 0x43;
break;
case 4:
xpad->bdata[3] = 0x44;
break;
case 6:
xpad->bdata[3] = 0x45;
}
ep_irq_in = &intf->cur_altsetting->endpoint[1].desc;
if (usb_endpoint_is_bulk_out(ep_irq_in)) {
usb_fill_bulk_urb(xpad->bulk_out, udev,
usb_sndbulkpipe(udev,
ep_irq_in->bEndpointAddress),
xpad->bdata, XPAD_PKT_LEN,
xpad_bulk_out, xpad);
} else {
usb_fill_int_urb(xpad->bulk_out, udev,
usb_sndintpipe(udev,
ep_irq_in->bEndpointAddress),
xpad->bdata, XPAD_PKT_LEN,
xpad_bulk_out, xpad, 0);
}
/*
* Submit the int URB immediately rather than waiting for open
* because we get status messages from the device whether
* or not any controllers are attached. In fact, it's
* exactly the message that a controller has arrived that
* we're waiting for.
*/
xpad->irq_in->dev = xpad->udev;
error = usb_submit_urb(xpad->irq_in, GFP_KERNEL);
if (error)
goto fail9;
}
return 0;
fail9: kfree(xpad->bdata);
fail8: usb_free_urb(xpad->bulk_out);
fail7: input_unregister_device(input_dev);
input_dev = NULL;
fail6: xpad_led_disconnect(xpad);
fail5: if (input_dev)
input_ff_destroy(input_dev);
fail4: xpad_deinit_output(xpad);
fail3: usb_free_urb(xpad->irq_in);
fail2: usb_free_coherent(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma);
fail1: input_free_device(input_dev);
kfree(xpad);
return error;
}
static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_xpad *xpad;
struct usb_endpoint_descriptor *ep_irq_in;
int ep_irq_in_idx;
int i, error;
for (i = 0; xpad_device[i].idVendor; i++) {
if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) &&
(le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct))
break;
}
if (xpad_device[i].xtype == XTYPE_XBOXONE &&
intf->cur_altsetting->desc.bInterfaceNumber != 0) {
/*
* The Xbox One controller lists three interfaces all with the
* same interface class, subclass and protocol. Differentiate by
* interface number.
*/
return -ENODEV;
}
xpad = kzalloc(sizeof(struct usb_xpad), GFP_KERNEL);
if (!xpad)
return -ENOMEM;
usb_make_path(udev, xpad->phys, sizeof(xpad->phys));
strlcat(xpad->phys, "/input0", sizeof(xpad->phys));
xpad->idata = usb_alloc_coherent(udev, XPAD_PKT_LEN,
GFP_KERNEL, &xpad->idata_dma);
if (!xpad->idata) {
error = -ENOMEM;
goto err_free_mem;
}
xpad->irq_in = usb_alloc_urb(0, GFP_KERNEL);
if (!xpad->irq_in) {
error = -ENOMEM;
goto err_free_idata;
}
xpad->udev = udev;
xpad->intf = intf;
xpad->mapping = xpad_device[i].mapping;
xpad->xtype = xpad_device[i].xtype;
xpad->name = xpad_device[i].name;
if (xpad->xtype == XTYPE_UNKNOWN) {
if (intf->cur_altsetting->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC) {
if (intf->cur_altsetting->desc.bInterfaceProtocol == 129)
xpad->xtype = XTYPE_XBOX360W;
else
xpad->xtype = XTYPE_XBOX360;
} else {
xpad->xtype = XTYPE_XBOX;
}
if (dpad_to_buttons)
xpad->mapping |= MAP_DPAD_TO_BUTTONS;
if (triggers_to_buttons)
xpad->mapping |= MAP_TRIGGERS_TO_BUTTONS;
if (sticks_to_null)
xpad->mapping |= MAP_STICKS_TO_NULL;
}
error = xpad_init_output(intf, xpad);
if (error)
goto err_free_in_urb;
/* Xbox One controller has in/out endpoints swapped. */
ep_irq_in_idx = xpad->xtype == XTYPE_XBOXONE ? 1 : 0;
ep_irq_in = &intf->cur_altsetting->endpoint[ep_irq_in_idx].desc;
usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
xpad->idata, XPAD_PKT_LEN, xpad_irq_in,
xpad, ep_irq_in->bInterval);
xpad->irq_in->transfer_dma = xpad->idata_dma;
xpad->irq_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
usb_set_intfdata(intf, xpad);
error = xpad_init_input(xpad);
if (error)
goto err_deinit_output;
if (xpad->xtype == XTYPE_XBOX360W) {
/*
* Submit the int URB immediately rather than waiting for open
* because we get status messages from the device whether
* or not any controllers are attached. In fact, it's
* exactly the message that a controller has arrived that
* we're waiting for.
*/
xpad->irq_in->dev = xpad->udev;
error = usb_submit_urb(xpad->irq_in, GFP_KERNEL);
if (error)
goto err_deinit_input;
/*
* Send presence packet.
* This will force the controller to resend connection packets.
* This is useful in the case we activate the module after the
* adapter has been plugged in, as it won't automatically
* send us info about the controllers.
*/
error = xpad_inquiry_pad_presence(xpad);
if (error)
goto err_kill_in_urb;
}
return 0;
err_kill_in_urb:
usb_kill_urb(xpad->irq_in);
err_deinit_input:
xpad_deinit_input(xpad);
err_deinit_output:
xpad_deinit_output(xpad);
err_free_in_urb:
usb_free_urb(xpad->irq_in);
err_free_idata:
usb_free_coherent(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma);
err_free_mem:
kfree(xpad);
return error;
}
static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_xpad *xpad;
struct input_dev *input_dev;
struct usb_endpoint_descriptor *ep_irq_in;
int i, error;
for (i = 0; xpad_device[i].idVendor; i++) {
if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) &&
(le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct))
break;
}
xpad = kzalloc(sizeof(struct usb_xpad), GFP_KERNEL);
input_dev = input_allocate_device();
if (!xpad || !input_dev) {
error = -ENOMEM;
goto fail1;
}
xpad->idata = usb_alloc_coherent(udev, XPAD_PKT_LEN,
GFP_KERNEL, &xpad->idata_dma);
if (!xpad->idata) {
error = -ENOMEM;
goto fail1;
}
xpad->irq_in = usb_alloc_urb(0, GFP_KERNEL);
if (!xpad->irq_in) {
error = -ENOMEM;
goto fail2;
}
xpad->udev = udev;
xpad->mapping = xpad_device[i].mapping;
xpad->xtype = xpad_device[i].xtype;
if (xpad->xtype == XTYPE_UNKNOWN) {
if (intf->cur_altsetting->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC) {
if (intf->cur_altsetting->desc.bInterfaceProtocol == 129)
xpad->xtype = XTYPE_XBOX360W;
else
xpad->xtype = XTYPE_XBOX360;
} else
xpad->xtype = XTYPE_XBOX;
if (dpad_to_buttons)
xpad->mapping |= MAP_DPAD_TO_BUTTONS;
if (triggers_to_buttons)
xpad->mapping |= MAP_TRIGGERS_TO_BUTTONS;
if (sticks_to_null)
xpad->mapping |= MAP_STICKS_TO_NULL;
}
xpad->dev = input_dev;
usb_make_path(udev, xpad->phys, sizeof(xpad->phys));
strlcat(xpad->phys, "/input0", sizeof(xpad->phys));
input_dev->name = xpad_device[i].name;
input_dev->phys = xpad->phys;
usb_to_input_id(udev, &input_dev->id);
input_dev->dev.parent = &intf->dev;
input_set_drvdata(input_dev, xpad);
input_dev->open = xpad_open;
input_dev->close = xpad_close;
input_dev->evbit[0] = BIT_MASK(EV_KEY);
if (!(xpad->mapping & MAP_STICKS_TO_NULL)) {
input_dev->evbit[0] |= BIT_MASK(EV_ABS);
for (i = 0; xpad_abs[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs[i]);
}
for (i = 0; xpad_common_btn[i] >= 0; i++)
__set_bit(xpad_common_btn[i], input_dev->keybit);
if (xpad->xtype == XTYPE_XBOX360 || xpad->xtype == XTYPE_XBOX360W) {
for (i = 0; xpad360_btn[i] >= 0; i++)
__set_bit(xpad360_btn[i], input_dev->keybit);
} else {
for (i = 0; xpad_btn[i] >= 0; i++)
__set_bit(xpad_btn[i], input_dev->keybit);
}
if (xpad->mapping & MAP_DPAD_TO_BUTTONS) {
for (i = 0; xpad_btn_pad[i] >= 0; i++)
__set_bit(xpad_btn_pad[i], input_dev->keybit);
} else {
for (i = 0; xpad_abs_pad[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_pad[i]);
}
if (xpad->mapping & MAP_TRIGGERS_TO_BUTTONS) {
for (i = 0; xpad_btn_triggers[i] >= 0; i++)
__set_bit(xpad_btn_triggers[i], input_dev->keybit);
} else {
for (i = 0; xpad_abs_triggers[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_triggers[i]);
}
error = xpad_init_output(intf, xpad);
if (error)
goto fail3;
error = xpad_init_ff(xpad);
if (error)
goto fail4;
error = xpad_led_probe(xpad);
if (error)
goto fail5;
ep_irq_in = &intf->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
xpad->idata, XPAD_PKT_LEN, xpad_irq_in,
xpad, ep_irq_in->bInterval);
xpad->irq_in->transfer_dma = xpad->idata_dma;
xpad->irq_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
error = input_register_device(xpad->dev);
if (error)
goto fail6;
usb_set_intfdata(intf, xpad);
if (xpad->xtype == XTYPE_XBOX360W) {
xpad->bulk_out = usb_alloc_urb(0, GFP_KERNEL);
if (!xpad->bulk_out) {
error = -ENOMEM;
goto fail7;
}
xpad->bdata = kzalloc(XPAD_PKT_LEN, GFP_KERNEL);
if (!xpad->bdata) {
error = -ENOMEM;
goto fail8;
}
xpad->bdata[2] = 0x08;
switch (intf->cur_altsetting->desc.bInterfaceNumber) {
case 0:
xpad->bdata[3] = 0x42;
break;
case 2:
xpad->bdata[3] = 0x43;
break;
case 4:
xpad->bdata[3] = 0x44;
break;
case 6:
xpad->bdata[3] = 0x45;
}
ep_irq_in = &intf->cur_altsetting->endpoint[1].desc;
usb_fill_bulk_urb(xpad->bulk_out, udev,
usb_sndbulkpipe(udev, ep_irq_in->bEndpointAddress),
xpad->bdata, XPAD_PKT_LEN, xpad_bulk_out, xpad);
xpad->irq_in->dev = xpad->udev;
error = usb_submit_urb(xpad->irq_in, GFP_KERNEL);
if (error)
goto fail9;
}
return 0;
fail9: kfree(xpad->bdata);
fail8: usb_free_urb(xpad->bulk_out);
fail7: input_unregister_device(input_dev);
input_dev = NULL;
fail6: xpad_led_disconnect(xpad);
fail5: if (input_dev)
input_ff_destroy(input_dev);
fail4: xpad_deinit_output(xpad);
fail3: usb_free_urb(xpad->irq_in);
fail2: usb_free_coherent(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma);
fail1: input_free_device(input_dev);
kfree(xpad);
return error;
}
static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_xpad *xpad;
struct input_dev *input_dev;
struct usb_endpoint_descriptor *ep_irq_in;
int i, error;
for (i = 0; xpad_device[i].idVendor; i++) {
if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) &&
(le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct))
break;
}
xpad = kzalloc(sizeof(struct usb_xpad), GFP_KERNEL);
input_dev = input_allocate_device();
if (!xpad || !input_dev) {
error = -ENOMEM;
goto fail1;
}
xpad->idata = usb_alloc_coherent(udev, XPAD_PKT_LEN,
GFP_KERNEL, &xpad->idata_dma);
if (!xpad->idata) {
error = -ENOMEM;
goto fail1;
}
xpad->irq_in = usb_alloc_urb(0, GFP_KERNEL);
if (!xpad->irq_in) {
error = -ENOMEM;
goto fail2;
}
xpad->udev = udev;
xpad->mapping = xpad_device[i].mapping;
xpad->xtype = xpad_device[i].xtype;
if (xpad->xtype == XTYPE_UNKNOWN) {
if (intf->cur_altsetting->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC) {
if (intf->cur_altsetting->desc.bInterfaceProtocol == 129)
xpad->xtype = XTYPE_XBOX360W;
else
xpad->xtype = XTYPE_XBOX360;
} else
xpad->xtype = XTYPE_XBOX;
if (dpad_to_buttons)
xpad->mapping |= MAP_DPAD_TO_BUTTONS;
if (triggers_to_buttons)
xpad->mapping |= MAP_TRIGGERS_TO_BUTTONS;
if (sticks_to_null)
xpad->mapping |= MAP_STICKS_TO_NULL;
}
xpad->dev = input_dev;
usb_make_path(udev, xpad->phys, sizeof(xpad->phys));
strlcat(xpad->phys, "/input0", sizeof(xpad->phys));
input_dev->name = xpad_device[i].name;
input_dev->phys = xpad->phys;
usb_to_input_id(udev, &input_dev->id);
input_dev->dev.parent = &intf->dev;
input_set_drvdata(input_dev, xpad);
input_dev->open = xpad_open;
input_dev->close = xpad_close;
input_dev->evbit[0] = BIT_MASK(EV_KEY);
if (!(xpad->mapping & MAP_STICKS_TO_NULL)) {
input_dev->evbit[0] |= BIT_MASK(EV_ABS);
/* set up axes */
for (i = 0; xpad_abs[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs[i]);
}
/* set up standard buttons */
for (i = 0; xpad_common_btn[i] >= 0; i++)
__set_bit(xpad_common_btn[i], input_dev->keybit);
/* set up model-specific ones */
if (xpad->xtype == XTYPE_XBOX360 || xpad->xtype == XTYPE_XBOX360W) {
for (i = 0; xpad360_btn[i] >= 0; i++)
__set_bit(xpad360_btn[i], input_dev->keybit);
} else {
for (i = 0; xpad_btn[i] >= 0; i++)
__set_bit(xpad_btn[i], input_dev->keybit);
}
if (xpad->mapping & MAP_DPAD_TO_BUTTONS) {
for (i = 0; xpad_btn_pad[i] >= 0; i++)
__set_bit(xpad_btn_pad[i], input_dev->keybit);
} else {
for (i = 0; xpad_abs_pad[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_pad[i]);
}
if (xpad->mapping & MAP_TRIGGERS_TO_BUTTONS) {
for (i = 0; xpad_btn_triggers[i] >= 0; i++)
__set_bit(xpad_btn_triggers[i], input_dev->keybit);
} else {
for (i = 0; xpad_abs_triggers[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_triggers[i]);
}
error = xpad_init_output(intf, xpad);
if (error)
goto fail3;
error = xpad_init_ff(xpad);
if (error)
goto fail4;
error = xpad_led_probe(xpad);
if (error)
goto fail5;
ep_irq_in = &intf->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
xpad->idata, XPAD_PKT_LEN, xpad_irq_in,
xpad, ep_irq_in->bInterval);
xpad->irq_in->transfer_dma = xpad->idata_dma;
xpad->irq_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
INIT_WORK(&xpad->submit_urb, xpad_do_submit_urb);
error = input_register_device(xpad->dev);
if (error)
goto fail6;
usb_set_intfdata(intf, xpad);
xpad->interface_number = intf->cur_altsetting->desc.bInterfaceNumber;
/*
* Submit the int URB immediately rather than waiting for open
* because we get status messages from the device whether
* or not any controllers are attached. In fact, it's
* exactly the message that a controller has arrived that
* we're waiting for.
*/
if (xpad->xtype == XTYPE_XBOX360W) {
xpad->irq_in->dev = xpad->udev;
error = usb_submit_urb(xpad->irq_in, GFP_KERNEL);
if (error)
goto fail7;
}
return 0;
fail7: input_unregister_device(input_dev);
input_dev = NULL;
fail6: xpad_led_disconnect(xpad);
fail5: if (input_dev)
input_ff_destroy(input_dev);
fail4: xpad_deinit_output(xpad);
fail3: cancel_work_sync(&xpad->submit_urb);
usb_free_urb(xpad->irq_in);
fail2: usb_free_coherent(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma);
fail1: input_free_device(input_dev);
kfree(xpad);
return error;
}
static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_xpad *xpad;
struct input_dev *input_dev;
struct usb_endpoint_descriptor *ep_irq_in;
int i;
int error = -ENOMEM;
for (i = 0; xpad_device[i].idVendor; i++) {
if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) &&
(le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct))
break;
}
xpad = kzalloc(sizeof(struct usb_xpad), GFP_KERNEL);
input_dev = input_allocate_device();
if (!xpad || !input_dev)
goto fail1;
xpad->idata = usb_buffer_alloc(udev, XPAD_PKT_LEN,
GFP_KERNEL, &xpad->idata_dma);
if (!xpad->idata)
goto fail1;
xpad->irq_in = usb_alloc_urb(0, GFP_KERNEL);
if (!xpad->irq_in)
goto fail2;
xpad->udev = udev;
xpad->dpad_mapping = xpad_device[i].dpad_mapping;
xpad->xtype = xpad_device[i].xtype;
if (xpad->dpad_mapping == MAP_DPAD_UNKNOWN)
xpad->dpad_mapping = !dpad_to_buttons;
if (xpad->xtype == XTYPE_UNKNOWN) {
if (intf->cur_altsetting->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC) {
if (intf->cur_altsetting->desc.bInterfaceProtocol == 129)
xpad->xtype = XTYPE_XBOX360W;
else
xpad->xtype = XTYPE_XBOX360;
} else
xpad->xtype = XTYPE_XBOX;
}
xpad->dev = input_dev;
usb_make_path(udev, xpad->phys, sizeof(xpad->phys));
strlcat(xpad->phys, "/input0", sizeof(xpad->phys));
input_dev->name = xpad_device[i].name;
input_dev->phys = xpad->phys;
usb_to_input_id(udev, &input_dev->id);
input_dev->dev.parent = &intf->dev;
input_set_drvdata(input_dev, xpad);
input_dev->open = xpad_open;
input_dev->close = xpad_close;
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
/* set up buttons */
for (i = 0; xpad_common_btn[i] >= 0; i++)
set_bit(xpad_common_btn[i], input_dev->keybit);
if ((xpad->xtype == XTYPE_XBOX360) || (xpad->xtype == XTYPE_XBOX360W))
for (i = 0; xpad360_btn[i] >= 0; i++)
set_bit(xpad360_btn[i], input_dev->keybit);
else
for (i = 0; xpad_btn[i] >= 0; i++)
set_bit(xpad_btn[i], input_dev->keybit);
if (xpad->dpad_mapping == MAP_DPAD_TO_BUTTONS)
for (i = 0; xpad_btn_pad[i] >= 0; i++)
set_bit(xpad_btn_pad[i], input_dev->keybit);
/* set up axes */
for (i = 0; xpad_abs[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs[i]);
if (xpad->dpad_mapping == MAP_DPAD_TO_AXES)
for (i = 0; xpad_abs_pad[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_pad[i]);
error = xpad_init_output(intf, xpad);
if (error)
goto fail2;
error = xpad_init_ff(xpad);
if (error)
goto fail3;
error = xpad_led_probe(xpad);
if (error)
goto fail3;
ep_irq_in = &intf->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
xpad->idata, XPAD_PKT_LEN, xpad_irq_in,
xpad, ep_irq_in->bInterval);
xpad->irq_in->transfer_dma = xpad->idata_dma;
xpad->irq_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
error = input_register_device(xpad->dev);
if (error)
goto fail4;
usb_set_intfdata(intf, xpad);
/*
* Submit the int URB immediatly rather than waiting for open
* because we get status messages from the device whether
* or not any controllers are attached. In fact, it's
* exactly the message that a controller has arrived that
* we're waiting for.
*/
if (xpad->xtype == XTYPE_XBOX360W) {
xpad->irq_in->dev = xpad->udev;
error = usb_submit_urb(xpad->irq_in, GFP_KERNEL);
if (error)
goto fail4;
/*
* Setup the message to set the LEDs on the
* controller when it shows up
*/
xpad->bulk_out = usb_alloc_urb(0, GFP_KERNEL);
if(!xpad->bulk_out)
goto fail5;
xpad->bdata = kzalloc(XPAD_PKT_LEN, GFP_KERNEL);
if(!xpad->bdata)
goto fail6;
xpad->bdata[2] = 0x08;
switch (intf->cur_altsetting->desc.bInterfaceNumber) {
case 0:
xpad->bdata[3] = 0x42;
break;
case 2:
xpad->bdata[3] = 0x43;
break;
case 4:
xpad->bdata[3] = 0x44;
break;
case 6:
xpad->bdata[3] = 0x45;
}
ep_irq_in = &intf->cur_altsetting->endpoint[1].desc;
usb_fill_bulk_urb(xpad->bulk_out, udev,
usb_sndbulkpipe(udev, ep_irq_in->bEndpointAddress),
xpad->bdata, XPAD_PKT_LEN, xpad_bulk_out, xpad);
}
return 0;
fail6: usb_free_urb(xpad->bulk_out);
fail5: usb_kill_urb(xpad->irq_in);
fail4: usb_free_urb(xpad->irq_in);
fail3: xpad_deinit_output(xpad);
fail2: usb_buffer_free(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma);
fail1: input_free_device(input_dev);
kfree(xpad);
return error;
}
static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id) //探针函数 相当于设备驱动的主函数
{
struct usb_device *udev = interface_to_usbdev(intf); //根据usb设备接口获取到usb设备 实际 返回的是 intf->dev.parent 即设备的父亲
struct usb_xpad *xpad; //自己的定义的手柄设备类型
struct input_dev *input_dev;//输入设备
struct usb_endpoint_descriptor *ep_irq_in; //in endpoint 的描述
int ep_irq_in_idx;
int i, error;
for (i = 0; xpad_device[i].idVendor; i++) //根据实际插入的设备的生产商id和产品id 找到匹配的设备
{
if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) &&
(le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct))
break;
}
xpad = kzalloc(sizeof(struct usb_xpad), GFP_KERNEL); //在内核空间为手柄设备申请内存空间
input_dev = input_allocate_device(); //为输入设备在内核空间申请内存空间 input_allocate_device()这个函数是用kzalloc函数申请了空间后 然后对该内存进行了初始化
if (!xpad || !input_dev) //申请空间失败
{
error = -ENOMEM;
goto fail1;
}
//usb_alloc_coherent (struct usb_device *dev,size_t size,gfp_t mem_flags,dma_addr_t *dma)--allocate dma-consistent buffer for URB_NO_xxx_DMA_MAP
//分配DMA接口的缓冲区 返回 idata_dma 和 idata（raw packet，原始数据包）
xpad->idata = usb_alloc_coherent(udev, XPAD_PKT_LEN,
GFP_KERNEL, &xpad->idata_dma);
if (!xpad->idata) //返回raw packet（原始数据包）失败
{
error = -ENOMEM;
goto fail1;
}
//usb_alloc_urb (int iso_packets,gfp_t mem_flags) create a new urb for a USB driver to use iso_packets = 0 when use interrupt endpoints
//创建新的urb给设备使用
xpad->irq_in = usb_alloc_urb(0, GFP_KERNEL);
if (!xpad->irq_in) //urb创建失败
{
error = -ENOMEM;
goto fail2;
}
xpad->udev = udev; //保存usb设备信息
xpad->intf = intf; //保存usb接口信息
xpad->dev = input_dev; //保存输入设备信息
//创建物理路径
usb_make_path(udev, xpad->phys, sizeof(xpad->phys));
strlcat(xpad->phys, "/input0", sizeof(xpad->phys)); //input0类型的
input_dev->name = xpad_device[i].name; //保存输入设备名字
input_dev->phys = xpad->phys; //保存输入设备的物理路径
usb_to_input_id(udev, &input_dev->id); //保存输入设备ID
input_dev->dev.parent = &intf->dev; //保存输入设备的设备 输入设备的父亲是usb接口 ， usb接口的父亲 usb设备
input_set_drvdata(input_dev, xpad);
input_dev->open = xpad_open; //输入设备的打开函数
input_dev->close = xpad_close; //输入设备的关闭函数
//BIT_MASK(nr) (1UL<<((nr)%BITS_PER_LONG）)
input_dev->evbit[0] = BIT_MASK(EV_KEY); //注册键盘事件
input_dev->evbit[0] |= BIT_MASK(EV_REL); //注册相对轴事件
input_dev->evbit[0] |= BIT_MASK(EV_ABS); //注册绝对轴事件
/* set up axes */
for (i = 0; xpad_abs[i] >= 0; i++) ///注册对应的绝对轴
xpad_set_up_abs(input_dev, xpad_abs[i]);
xpad_set_up_rel(input_dev, REL_WHEEL); //注册对应的相对轴
for (i = 0 ; key_need_register[i] >= 0; i++) __set_bit(key_need_register[i], input_dev->keybit);
//注册按键
for (i = 0; xpad_common_btn[i] >= 0; i++)
__set_bit(xpad_common_btn[i], input_dev->keybit);
//注册游戏手柄按键
for (i = 0; xpad360_btn[i] >= 0; i++)
__set_bit(xpad360_btn[i], input_dev->keybit);
//注册LT RT按键
for (i = 0; xpad_abs_triggers[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_triggers[i]);
//初始化设备输出
error = xpad_init_output(intf, xpad);
if (error)
goto fail3;
ep_irq_in_idx = 0;
ep_irq_in = &intf->cur_altsetting->endpoint[ep_irq_in_idx].desc; //根据usb接口得到 in endpoint口的描述信息
//函数结构 usb_fill_int_urb(struct urb* urb,struct usb_device * dev,unsigned int pipe,void * transfer_buffer,int buffer_length,usb_complete_t complete,void * context,int interval)
//根据 usb设备，usb管道，输入缓冲区的首地址，缓冲区长度，urb入口函数，手柄设备数据信息，in endpoint口的轮换间隔信息 得到 输入的urb
usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
xpad->idata, XPAD_PKT_LEN, xpad_irq_in,
xpad, ep_irq_in->bInterval);
xpad->irq_in->transfer_dma = xpad->idata_dma; //传输的DMA接口地址
xpad->irq_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; //传输标志(允许DMA方式传输) urb->transfer_dma valid on submit
//根据输入设备信息 注册设备
error = input_register_device(xpad->dev);
if (error)
goto fail5;
usb_set_intfdata(intf, xpad);
return 0;
fail5: if (input_dev)
input_ff_destroy(input_dev); //free force feedback structures
fail4: xpad_deinit_output(xpad); //free out urb and out dma
fail3: usb_free_urb(xpad->irq_in); //free in urb
fail2: usb_free_coherent(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma); //free in dma
fail1: input_free_device(input_dev); //free input_dev
kfree(xpad); //free xpad
return error;
}
