static void usbduxsigma_detach(struct comedi_device *dev) { struct usb_interface *intf = comedi_to_usb_interface(dev); struct usbduxsigma_private *devpriv = dev->private; usb_set_intfdata(intf, NULL); if (!devpriv) return; down(&devpriv->sem); /* force unlink all urbs */ usbduxsigma_ai_stop(dev, 1); usbduxsigma_ao_stop(dev, 1); usbduxsigma_pwm_stop(dev, 1); usbduxsigma_free_usb_buffers(dev); up(&devpriv->sem); }
static int usbduxsigma_auto_attach(struct comedi_device *dev, unsigned long context_unused) { struct usb_interface *intf = comedi_to_usb_interface(dev); struct usb_device *usb = comedi_to_usb_dev(dev); struct usbduxsigma_private *devpriv; struct comedi_subdevice *s; int offset; int ret; devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); if (!devpriv) return -ENOMEM; sema_init(&devpriv->sem, 1); usb_set_intfdata(intf, devpriv); devpriv->high_speed = (usb->speed == USB_SPEED_HIGH); if (devpriv->high_speed) { devpriv->n_ai_urbs = NUMOFINBUFFERSHIGH; devpriv->n_ao_urbs = NUMOFOUTBUFFERSHIGH; devpriv->pwm_buf_sz = 512; } else { devpriv->n_ai_urbs = NUMOFINBUFFERSFULL; devpriv->n_ao_urbs = NUMOFOUTBUFFERSFULL; } ret = usbduxsigma_alloc_usb_buffers(dev); if (ret) return ret; /* setting to alternate setting 3: enabling iso ep and bulk ep. */ ret = usb_set_interface(usb, intf->altsetting->desc.bInterfaceNumber, 3); if (ret < 0) { dev_err(dev->class_dev, "could not set alternate setting 3 in high speed\n"); return ret; } ret = comedi_load_firmware(dev, &usb->dev, FIRMWARE, usbduxsigma_firmware_upload, 0); if (ret) return ret; ret = comedi_alloc_subdevices(dev, (devpriv->high_speed) ? 4 : 3); if (ret) return ret; /* Analog Input subdevice */ s = &dev->subdevices[0]; dev->read_subdev = s; s->type = COMEDI_SUBD_AI; s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_CMD_READ | SDF_LSAMPL; s->n_chan = NUMCHANNELS; s->len_chanlist = NUMCHANNELS; s->maxdata = 0x00ffffff; s->range_table = &usbduxsigma_ai_range; s->insn_read = usbduxsigma_ai_insn_read; s->do_cmdtest = usbduxsigma_ai_cmdtest; s->do_cmd = usbduxsigma_ai_cmd; s->cancel = usbduxsigma_ai_cancel; /* Analog Output subdevice */ s = &dev->subdevices[1]; dev->write_subdev = s; s->type = COMEDI_SUBD_AO; s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE; s->n_chan = 4; s->len_chanlist = s->n_chan; s->maxdata = 0x00ff; s->range_table = &range_unipolar2_5; s->insn_write = usbduxsigma_ao_insn_write; s->insn_read = usbduxsigma_ao_insn_read; s->do_cmdtest = usbduxsigma_ao_cmdtest; s->do_cmd = usbduxsigma_ao_cmd; s->cancel = usbduxsigma_ao_cancel; ret = comedi_alloc_subdev_readback(s); if (ret) return ret; /* Digital I/O subdevice */ s = &dev->subdevices[2]; s->type = COMEDI_SUBD_DIO; s->subdev_flags = SDF_READABLE | SDF_WRITABLE; s->n_chan = 24; s->maxdata = 1; s->range_table = &range_digital; s->insn_bits = usbduxsigma_dio_insn_bits; s->insn_config = usbduxsigma_dio_insn_config; if (devpriv->high_speed) { /* Timer / pwm subdevice */ s = &dev->subdevices[3]; s->type = COMEDI_SUBD_PWM; s->subdev_flags = SDF_WRITABLE | SDF_PWM_HBRIDGE; s->n_chan = 8; s->maxdata = devpriv->pwm_buf_sz; s->insn_write = usbduxsigma_pwm_write; s->insn_config = usbduxsigma_pwm_config; usbduxsigma_pwm_period(dev, s, PWM_DEFAULT_PERIOD); } offset = usbduxsigma_getstatusinfo(dev, 0); if (offset < 0) { dev_err(dev->class_dev, "Communication to USBDUXSIGMA failed! Check firmware and cabling.\n"); return offset; } dev_info(dev->class_dev, "ADC_zero = %x\n", offset); return 0; }
/** * comedi_to_usb_dev() - comedi_device pointer to usb_device pointer. * @dev: comedi_device struct */ struct usb_device *comedi_to_usb_dev(struct comedi_device *dev) { struct usb_interface *intf = comedi_to_usb_interface(dev); return intf ? interface_to_usbdev(intf) : NULL; }