Exemplo n.º 1
0
static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
		struct wacom_features *features)
{
	int error = 0;
	struct usb_host_interface *interface = intf->cur_altsetting;
	struct hid_descriptor *hid_desc;

	/* default features */
	features->device_type = BTN_TOOL_PEN;
	features->x_fuzz = 4;
	features->y_fuzz = 4;
	features->pressure_fuzz = 0;
	features->distance_fuzz = 0;

	/* only Tablet PCs and Bamboo P&T need to retrieve the info */
	if ((features->type != TABLETPC) && (features->type != TABLETPC2FG) &&
	    (features->type != BAMBOO_PT))
		goto out;

	if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
		if (usb_get_extra_descriptor(&interface->endpoint[0],
				HID_DEVICET_REPORT, &hid_desc)) {
			printk("wacom: can not retrieve extra class descriptor\n");
			error = 1;
			goto out;
		}
	}
	error = wacom_parse_hid(intf, hid_desc, features);
	if (error)
		goto out;

 out:
	return error;
}
Exemplo n.º 2
0
static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
		struct wacom_features *features)
{
	int error = 0;
	struct usb_host_interface *interface = intf->cur_altsetting;
	struct hid_descriptor *hid_desc;

	/* default device to penabled */
	features->device_type = BTN_TOOL_PEN;

	/* only Tablet PCs need to retrieve the info */
	if ((features->type != TABLETPC) && (features->type != TABLETPC2FG))
		goto out;

	if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
		if (usb_get_extra_descriptor(&interface->endpoint[0],
				HID_DEVICET_REPORT, &hid_desc)) {
			printk("wacom: can not retrieve extra class descriptor\n");
			error = 1;
			goto out;
		}
	}
	error = wacom_parse_hid(intf, hid_desc, features);
	if (error)
		goto out;

	/* touch device found but size is not defined. use default */
	if (features->device_type == BTN_TOOL_DOUBLETAP && !features->x_max) {
		features->x_max = 1023;
		features->y_max = 1023;
	}

 out:
	return error;
}
Exemplo n.º 3
0
static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
					 struct wacom_features *features)
{
	int error = 0;
	struct usb_host_interface *interface = intf->cur_altsetting;
	struct hid_descriptor *hid_desc;

	/* default features */
	features->device_type = BTN_TOOL_PEN;
	features->x_fuzz = 4;
	features->y_fuzz = 4;
	features->pressure_fuzz = 0;
	features->distance_fuzz = 0;

	/*
	 * The wireless device HID is basic and layout conflicts with
	 * other tablets (monitor and touch interface can look like pen).
	 * Skip the query for this type and modify defaults based on
	 * interface number.
	 */
	if (features->type == WIRELESS) {
		if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
			features->device_type = 0;
		} else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
			features->device_type = BTN_TOOL_FINGER;
			features->pktlen = WACOM_PKGLEN_BBTOUCH3;
		}
	}

	/* only devices that support touch need to retrieve the info */
	if (features->type < BAMBOO_PT) {
		goto out;
	}

	error = usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc);
	if (error) {
		error = usb_get_extra_descriptor(&interface->endpoint[0],
						 HID_DEVICET_REPORT, &hid_desc);
		if (error) {
			dev_err(&intf->dev,
				"can not retrieve extra class descriptor\n");
			goto out;
		}
	}
	error = wacom_parse_hid(intf, hid_desc, features);
	if (error)
		goto out;
	wacom_fix_phy_from_hid(features);

 out:
	return error;
}
Exemplo n.º 4
0
static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
		struct wacom_features *features)
{
	int error = 0;
	struct usb_host_interface *interface = intf->cur_altsetting;
	struct hid_descriptor *hid_desc;

	/*                  */
	features->device_type = BTN_TOOL_PEN;
	features->x_fuzz = 4;
	features->y_fuzz = 4;
	features->pressure_fuzz = 0;
	features->distance_fuzz = 0;

	/*
                                                              
                                                                  
                                                             
                     
  */
	if (features->type == WIRELESS) {
		if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
			features->device_type = 0;
		} else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
			features->device_type = BTN_TOOL_DOUBLETAP;
			features->pktlen = WACOM_PKGLEN_BBTOUCH3;
		}
	}

	/*                                                          */
	if ((features->type != TABLETPC) && (features->type != TABLETPC2FG) &&
	    (features->type != BAMBOO_PT))
		goto out;

	if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
		if (usb_get_extra_descriptor(&interface->endpoint[0],
				HID_DEVICET_REPORT, &hid_desc)) {
			printk("wacom: can not retrieve extra class descriptor\n");
			error = 1;
			goto out;
		}
	}
	error = wacom_parse_hid(intf, hid_desc, features);
	if (error)
		goto out;

 out:
	return error;
}
Exemplo n.º 5
0
static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_host_interface *interface = intf->cur_altsetting;
	struct usb_endpoint_descriptor *endpoint;
	struct wacom *wacom;
	struct wacom_wac *wacom_wac;
	struct wacom_features *features;
	struct input_dev *input_dev;
	int error = -ENOMEM;
	char rep_data[2], limit = 0;
	struct hid_descriptor *hid_desc;

	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
	wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!wacom || !input_dev || !wacom_wac)
		goto fail1;

	wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
	if (!wacom_wac->data)
		goto fail1;

	wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
	if (!wacom->irq)
		goto fail2;

	wacom->usbdev = dev;
	wacom->dev = input_dev;
	wacom->intf = intf;
	mutex_init(&wacom->lock);
	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));

	wacom_wac->features = features = get_wacom_feature(id);
	BUG_ON(features->pktlen > 10);

	input_dev->name = wacom_wac->features->name;
	wacom->wacom_wac = wacom_wac;
	usb_to_input_id(dev, &input_dev->id);

	input_dev->dev.parent = &intf->dev;

	input_set_drvdata(input_dev, wacom);

	input_dev->open = wacom_open;
	input_dev->close = wacom_close;

	endpoint = &intf->cur_altsetting->endpoint[0].desc;

	/* Initialize touch_x_max and touch_y_max in case it is not defined */
	if (wacom_wac->features->type == TABLETPC) {
		features->touch_x_max = 1023;
		features->touch_y_max = 1023;
	} else {
		features->touch_x_max = 0;
		features->touch_y_max = 0;
	}

	/* TabletPC need to retrieve the physical and logical maximum from report descriptor */
	if (wacom_wac->features->type == TABLETPC) {
		if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
			if (usb_get_extra_descriptor(&interface->endpoint[0],
						     HID_DEVICET_REPORT, &hid_desc)) {
				printk("wacom: can not retrive extra class descriptor\n");
				goto fail2;
			}
		}
		error = wacom_parse_hid(intf, hid_desc, wacom_wac);
		if (error)
			goto fail2;
	}

	input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
	input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) |
		BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS);
	input_set_abs_params(input_dev, ABS_X, 0, features->x_max, 4, 0);
	input_set_abs_params(input_dev, ABS_Y, 0, features->y_max, 4, 0);
	input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max, 0, 0);
	if (features->type == TABLETPC) {
		input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_DOUBLETAP);
		input_set_abs_params(input_dev, ABS_RX, 0, features->touch_x_max, 4, 0);
		input_set_abs_params(input_dev, ABS_RY, 0, features->touch_y_max, 4, 0);
	}
	input_dev->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);

	wacom_init_input_dev(input_dev, wacom_wac);

	usb_fill_int_urb(wacom->irq, dev,
			 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
			 wacom_wac->data, wacom_wac->features->pktlen,
			 wacom_sys_irq, wacom, endpoint->bInterval);
	wacom->irq->transfer_dma = wacom->data_dma;
	wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	error = input_register_device(wacom->dev);
	if (error)
		goto fail3;

	/*
	 * Ask the tablet to report tablet data if it is not a Tablet PC.
	 * Repeat until it succeeds
	 */
	if (wacom_wac->features->type != TABLETPC) {
		do {
			rep_data[0] = 2;
			rep_data[1] = 2;
			error = usb_set_report(intf, WAC_HID_FEATURE_REPORT,
						2, rep_data, 2);
			if (error >= 0)
				error = usb_get_report(intf,
						WAC_HID_FEATURE_REPORT, 2,
						rep_data, 2);
		} while ((error < 0 || rep_data[1] != 2) && limit++ < 5);
	}

	usb_set_intfdata(intf, wacom);
	return 0;

 fail3:	usb_free_urb(wacom->irq);
 fail2:	usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
 fail1:	input_free_device(input_dev);
	kfree(wacom);
	kfree(wacom_wac);
	return error;
}