static void xpad_irq_in(struct urb *urb)
{
struct usb_xpad *xpad = urb->context;
struct device *dev = &xpad->intf->dev;
int retval, status;
status = urb->status;
switch (status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dev_dbg(dev, "%s - urb shutting down with status: %d\n",
__func__, status);
return;
default:
dev_dbg(dev, "%s - nonzero urb status received: %d\n",
__func__, status);
goto exit;
}
switch (xpad->xtype) {
case XTYPE_XBOX360:
trace_joystick_irq("Joystick_xpad360_process_packet");
xpad360_process_packet(xpad, 0, xpad->idata);
break;
case XTYPE_XBOX360W:
trace_joystick_irq("Joystick_xpad360w_process_packet");
xpad360w_process_packet(xpad, 0, xpad->idata);
break;
default:
trace_joystick_irq("Joystick_xpad_process_packet");
xpad_process_packet(xpad, 0, xpad->idata);
}
exit:
trace_joystick_irq("Joystick_xpad_usb_submit_urb");
retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
__func__, retval);
}
static void xpad360w_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data)
{
/* Presence change */
if (data[0] & 0x08) {
if (data[1] & 0x80) {
xpad->pad_present = 1;
usb_submit_urb(xpad->bulk_out, GFP_ATOMIC);
} else
xpad->pad_present = 0;
}
/* Valid pad data */
if (!(data[1] & 0x1))
return;
xpad360_process_packet(xpad, cmd, &data[4]);
}
static void xpad_irq_in(struct urb *urb)
{
struct usb_xpad *xpad = urb->context;
int retval, status;
status = urb->status;
switch (status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d",
__func__, status);
return;
case -EPIPE:
case -EPROTO:
schedule_work(&xpad->submit_urb);
return;
default:
dbg("%s - nonzero urb status received: %d",
__func__, status);
goto exit;
}
switch (xpad->xtype) {
case XTYPE_XBOX360:
xpad360_process_packet(xpad, 0, xpad->idata);
break;
case XTYPE_XBOX360W:
xpad360w_process_packet(xpad, 0, xpad->idata);
break;
default:
xpad_process_packet(xpad, 0, xpad->idata);
}
exit:
retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
err ("%s - usb_submit_urb failed with result %d",
__func__, retval);
}
static void xpad360w_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data)
{
/* Presence change */
if (data[0] & 0x08) {
if (data[1] & 0x80) {
xpad->pad_present = 1;
xpad_send_led_command(xpad,
0x42 + ((xpad->interface_number / 2) & 3), 0);
} else
xpad->pad_present = 0;
}
/* Valid pad data */
if (!(data[1] & 0x1))
return;
xpad360_process_packet(xpad, cmd, &data[4]);
}
/*
* xpad360w_process_packet
*
* Completes a request by converting the data into events for the
* input subsystem. It is version for xbox 360 wireless controller.
*
* Byte.Bit
* 00.1 - Status change: The controller or headset has connected/disconnected
* Bits 01.7 and 01.6 are valid
* 01.7 - Controller present
* 01.6 - Headset present
* 01.1 - Pad state (Bytes 4+) valid
*
*/
static void xpad360w_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data)
{
int presence;
/* Presence change */
if (data[0] & 0x08) {
presence = (data[1] & 0x80) != 0;
if (xpad->pad_present != presence) {
xpad->pad_present = presence;
schedule_work(&xpad->work);
}
}
/* Valid pad data */
if (!(data[1] & 0x1))
return;
xpad360_process_packet(xpad, cmd, &data[4]);
}
/*
* xpad360w_process_packet
*
* Completes a request by converting the data into events for the
* input subsystem. It is version for xbox 360 wireless controller.
*
* Byte.Bit
* 00.1 - Status change: The controller or headset has connected/disconnected
* Bits 01.7 and 01.6 are valid
* 01.7 - Controller present
* 01.6 - Headset present
* 01.1 - Pad state (Bytes 4+) valid
*
*/
static void xpad360w_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data)
{
/* Presence change */
if (data[0] & 0x08) {
if (data[1] & 0x80) {
xpad->pad_present = 1;
/*
* Light up the segment corresponding to
* controller number.
*/
xpad_identify_controller(xpad);
} else
xpad->pad_present = 0;
}
/* Valid pad data */
if (!(data[1] & 0x1))
return;
xpad360_process_packet(xpad, cmd, &data[4]);
}
static void xpad_irq_in(struct urb *urb) //检测 urb状态的函数
{
struct usb_xpad *xpad = urb->context; //获取urb的内容 里面存放着usb_xpad的结构信息
struct device *dev = &xpad->intf->dev; //根据usb设备接口获取该设备信息 intf为usb设备接口 dev是详细的设备信息
int retval, status;
status = urb->status; //urb的返回值
switch (status) //判断urb的返回值
{
case 0:
//成功
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
//这个urb结束了
dev_dbg(dev, "%s - urb shutting down with status: %d\n",
__func__, status);
return;
default:
dev_dbg(dev, "%s - nonzero urb status received: %d\n",
__func__, status);
goto exit;
}
xpad360_process_packet(xpad, 0, xpad->idata); //处理设备的raw packet
exit:
retval = usb_submit_urb(urb, GFP_ATOMIC);//提交urb
if (retval) //出错
dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
__func__, retval);
}
