wacom.c

linux-2.6.15.6

	if (retval)
		err ("%s - usb_submit_urb failed with result %d",
		     __FUNCTION__, retval);
}

static void wacom_graphire_irq(struct urb *urb, struct pt_regs *regs)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	int x, y, id, rw;
	int retval;

	switch (urb->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", __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
		goto exit;
	}

	if (data[0] != 2) {
		dbg("wacom_graphire_irq: received unknown report #%d", data[0]);
		goto exit;
	}

	input_regs(dev, regs);

	id = STYLUS_DEVICE_ID;
	if (data[1] & 0x10) { /* in prox */

		switch ((data[1] >> 5) & 3) {

			case 0:	/* Pen */
				wacom->tool[0] = BTN_TOOL_PEN;
				break;

			case 1: /* Rubber */
				wacom->tool[0] = BTN_TOOL_RUBBER;
				id = ERASER_DEVICE_ID;
				break;

			case 2: /* Mouse with wheel */
				input_report_key(dev, BTN_MIDDLE, data[1] & 0x04);
				if (wacom->features->type == G4) {
					rw = data[7] & 0x04 ? -(data[7] & 0x03) : (data[7] & 0x03);
					input_report_rel(dev, REL_WHEEL, rw);
				} else
					input_report_rel(dev, REL_WHEEL, (signed char) data[6]);
				/* fall through */

			case 3: /* Mouse without wheel */
				wacom->tool[0] = BTN_TOOL_MOUSE;
				id = CURSOR_DEVICE_ID;
				input_report_key(dev, BTN_LEFT, data[1] & 0x01);
				input_report_key(dev, BTN_RIGHT, data[1] & 0x02);
				if (wacom->features->type == G4)
					input_report_abs(dev, ABS_DISTANCE, data[6]);
				else
					input_report_abs(dev, ABS_DISTANCE, data[7]);
				break;
		}
	}

	if (data[1] & 0x90) {
		x = le16_to_cpu(*(__le16 *) &data[2]);
		y = le16_to_cpu(*(__le16 *) &data[4]);
		input_report_abs(dev, ABS_X, x);
		input_report_abs(dev, ABS_Y, y);
		if (wacom->tool[0] != BTN_TOOL_MOUSE) {
			input_report_abs(dev, ABS_PRESSURE, data[6] | ((data[7] & 0x01) << 8));
			input_report_key(dev, BTN_TOUCH, data[1] & 0x01);
			input_report_key(dev, BTN_STYLUS, data[1] & 0x02);
			input_report_key(dev, BTN_STYLUS2, data[1] & 0x04);
		}
	}

	input_report_key(dev, wacom->tool[0], (data[1] & 0x10) ? id : 0);
	input_sync(dev);

	/* send pad data */
	if (wacom->features->type == G4) {
		/* fist time sending pad data */
		if (wacom->tool[1] != BTN_TOOL_FINGER) {
			wacom->id[1] = 0;
			wacom->serial[1] = (data[7] & 0x38) >> 2;
		}
		if (data[7] & 0xf8) {
			input_report_key(dev, BTN_0, (data[7] & 0x40));
			input_report_key(dev, BTN_4, (data[7] & 0x80));
			if (((data[7] & 0x38) >> 2) == (wacom->serial[1] & 0x0e))
				/* alter REL_WHEEL value so X apps can get it */
				wacom->serial[1] += (wacom->serial[1] & 0x01) ? -1 : 1;
			else
				 wacom->serial[1] = (data[7] & 0x38 ) >> 2;

			/* don't alter the value when there is no wheel event */
			if (wacom->serial[1] == 1)
				wacom->serial[1] = 0;
			rw = wacom->serial[1];
			rw = (rw & 0x08) ? -(rw & 0x07) : (rw & 0x07);
			input_report_rel(dev, REL_WHEEL, rw);
			wacom->tool[1] = BTN_TOOL_FINGER;
			wacom->id[1] = data[7] & 0xf8;
			input_report_key(dev, wacom->tool[1], 0xf0);
			input_event(dev, EV_MSC, MSC_SERIAL, 0xf0);
		} else if (wacom->id[1]) {
			wacom->id[1] = 0;
			wacom->serial[1] = 0;
			input_report_key(dev, wacom->tool[1], 0);
			input_event(dev, EV_MSC, MSC_SERIAL, 0xf0);
		}
		input_sync(dev);
	}
 exit:
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
		err ("%s - usb_submit_urb failed with result %d",
		     __FUNCTION__, retval);
}

static int wacom_intuos_inout(struct urb *urb)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	int idx;

	/* tool number */
	idx = data[1] & 0x01;

	/* Enter report */
	if ((data[1] & 0xfc) == 0xc0) {
		/* serial number of the tool */
		wacom->serial[idx] = ((data[3] & 0x0f) << 28) +
			(data[4] << 20) + (data[5] << 12) +
			(data[6] << 4) + (data[7] >> 4);

		wacom->id[idx] = (data[2] << 4) | (data[3] >> 4);
		switch (wacom->id[idx]) {
			case 0x812: /* Inking pen */
			case 0x801: /* Intuos3 Inking pen */
			case 0x012:
				wacom->tool[idx] = BTN_TOOL_PENCIL;
				break;
			case 0x822: /* Pen */
			case 0x842:
			case 0x852:
			case 0x823: /* Intuos3 Grip Pen */
			case 0x813: /* Intuos3 Classic Pen */
			case 0x885: /* Intuos3 Marker Pen */
			case 0x022:
				wacom->tool[idx] = BTN_TOOL_PEN;
				break;
			case 0x832: /* Stroke pen */
			case 0x032:
				wacom->tool[idx] = BTN_TOOL_BRUSH;
				break;
			case 0x007: /* Mouse 4D and 2D */
		        case 0x09c:
			case 0x094:
			case 0x017: /* Intuos3 2D Mouse */
				wacom->tool[idx] = BTN_TOOL_MOUSE;
				break;
			case 0x096: /* Lens cursor */
			case 0x097: /* Intuos3 Lens cursor */
				wacom->tool[idx] = BTN_TOOL_LENS;
				break;
			case 0x82a: /* Eraser */
			case 0x85a:
		        case 0x91a:
			case 0xd1a:
			case 0x0fa:
			case 0x82b: /* Intuos3 Grip Pen Eraser */
			case 0x81b: /* Intuos3 Classic Pen Eraser */
			case 0x91b: /* Intuos3 Airbrush Eraser */
				wacom->tool[idx] = BTN_TOOL_RUBBER;
				break;
			case 0xd12:
			case 0x912:
			case 0x112:
			case 0x913: /* Intuos3 Airbrush */
				wacom->tool[idx] = BTN_TOOL_AIRBRUSH;
				break;
			default: /* Unknown tool */
				wacom->tool[idx] = BTN_TOOL_PEN;
		}
		input_report_key(dev, wacom->tool[idx], wacom->id[idx]);
		input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
		input_sync(dev);
		return 1;
	}

	/* Exit report */
	if ((data[1] & 0xfe) == 0x80) {
		input_report_key(dev, wacom->tool[idx], 0);
		input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
		input_sync(dev);
		return 1;
	}

	return 0;
}

static void wacom_intuos_general(struct urb *urb)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	unsigned int t;

	/* general pen packet */
	if ((data[1] & 0xb8) == 0xa0) {
		t = (data[6] << 2) | ((data[7] >> 6) & 3);
		input_report_abs(dev, ABS_PRESSURE, t);
		input_report_abs(dev, ABS_TILT_X,
				((data[7] << 1) & 0x7e) | (data[8] >> 7));
		input_report_abs(dev, ABS_TILT_Y, data[8] & 0x7f);
		input_report_key(dev, BTN_STYLUS, data[1] & 2);
		input_report_key(dev, BTN_STYLUS2, data[1] & 4);
		input_report_key(dev, BTN_TOUCH, t > 10);
	}

	/* airbrush second packet */
	if ((data[1] & 0xbc) == 0xb4) {
		input_report_abs(dev, ABS_WHEEL,
				(data[6] << 2) | ((data[7] >> 6) & 3));
		input_report_abs(dev, ABS_TILT_X,
				((data[7] << 1) & 0x7e) | (data[8] >> 7));
		input_report_abs(dev, ABS_TILT_Y, data[8] & 0x7f);
	}
	return;
}

static void wacom_intuos_irq(struct urb *urb, struct pt_regs *regs)
{
	struct wacom *wacom = urb->context;
	unsigned char *data = wacom->data;
	struct input_dev *dev = wacom->dev;
	unsigned int t;
	int idx;
	int retval;

	switch (urb->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", __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
		goto exit;
	}

	if (data[0] != 2 && data[0] != 5 && data[0] != 6 && data[0] != 12) {
		dbg("wacom_intuos_irq: received unknown report #%d", data[0]);
		goto exit;
	}

	input_regs(dev, regs);

	/* tool number */
	idx = data[1] & 0x01;

	/* pad packets. Works as a second tool and is always in prox */
	if (data[0] == 12) {
		/* initiate the pad as a device */
		if (wacom->tool[1] != BTN_TOOL_FINGER) {
			wacom->tool[1] = BTN_TOOL_FINGER;
			input_report_key(dev, wacom->tool[1], 1);
		}
		input_report_key(dev, BTN_0, (data[5] & 0x01));
		input_report_key(dev, BTN_1, (data[5] & 0x02));
		input_report_key(dev, BTN_2, (data[5] & 0x04));
		input_report_key(dev, BTN_3, (data[5] & 0x08));
		input_report_key(dev, BTN_4, (data[6] & 0x01));
		input_report_key(dev, BTN_5, (data[6] & 0x02));
		input_report_key(dev, BTN_6, (data[6] & 0x04));
		input_report_key(dev, BTN_7, (data[6] & 0x08));
		input_report_abs(dev, ABS_RX, ((data[1] & 0x1f) << 8) | data[2]);
		input_report_abs(dev, ABS_RY, ((data[3] & 0x1f) << 8) | data[4]);
		input_event(dev, EV_MSC, MSC_SERIAL, 0xffffffff);
		input_sync(dev);
		goto exit;
	}

	/* process in/out prox events */
	if (wacom_intuos_inout(urb))
		goto exit;

	/* Cintiq doesn't send data when RDY bit isn't set */
	if ((wacom->features->type == CINTIQ) && !(data[1] & 0x40))
		goto exit;

	if (wacom->features->type >= INTUOS3) {
		input_report_abs(dev, ABS_X, (data[2] << 9) | (data[3] << 1) | ((data[9] >> 1) & 1));
		input_report_abs(dev, ABS_Y, (data[4] << 9) | (data[5] << 1) | (data[9] & 1));
		input_report_abs(dev, ABS_DISTANCE, ((data[9] >> 2) & 0x3f));
	} else {
		input_report_abs(dev, ABS_X, be16_to_cpu(*(__be16 *) &data[2]));
		input_report_abs(dev, ABS_Y, be16_to_cpu(*(__be16 *) &data[4]));
		input_report_abs(dev, ABS_DISTANCE, ((data[9] >> 3) & 0x1f));
	}

	/* process general packets */
	wacom_intuos_general(urb);

	/* 4D mouse, 2D mouse, marker pen rotation, or Lens cursor packets */
	if ((data[1] & 0xbc) == 0xa8 || (data[1] & 0xbe) == 0xb0) {

		if (data[1] & 0x02) {
			/* Rotation packet */
			if (wacom->features->type >= INTUOS3) {