wacom.c

S3C2440ARM9开发板的USB驱动程序

			case 0x096: wacom->tool[idx] = BTN_TOOL_LENS;		break;	/* Lens cursor */
			case 0x82a:
		        case 0x85a:
		        case 0x91a:
			case 0x0fa: wacom->tool[idx] = BTN_TOOL_RUBBER;		break;	/* Eraser */
			case 0x112: wacom->tool[idx] = BTN_TOOL_AIRBRUSH;	break;	/* Airbrush */
			default:    wacom->tool[idx] = BTN_TOOL_PEN;		break;	/* Unknown tool */
		}

		input_report_key(dev, wacom->tool[idx], 1);
		input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
		return;
	}

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

	input_report_abs(dev, ABS_X, ((__u32)data[2] << 8) | data[3]);
	input_report_abs(dev, ABS_Y, ((__u32)data[4] << 8) | data[5]);
	input_report_abs(dev, ABS_DISTANCE, data[9] >> 4);
	
	if ((data[1] & 0xb8) == 0xa0) {						/* general pen packet */
		input_report_abs(dev, ABS_PRESSURE, t = ((__u32)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);
		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);
	}

	if ((data[1] & 0xbc) == 0xb4) {						/* airbrush second packet */
		input_report_abs(dev, ABS_WHEEL, ((__u32)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);
	}
	
	if ((data[1] & 0xbc) == 0xa8 || (data[1] & 0xbe) == 0xb0) {		/* 4D mouse or Lens cursor packets */

		if (data[1] & 0x02) {						/* Rotation packet */

			input_report_abs(dev, ABS_RZ, (data[7] & 0x20) ?
					 ((__u32)data[6] << 2) | ((data[7] >> 6) & 3):
					 (-(((__u32)data[6] << 2) | ((data[7] >> 6) & 3))) - 1);

		} else {

			input_report_key(dev, BTN_LEFT,   data[8] & 0x01);
			input_report_key(dev, BTN_MIDDLE, data[8] & 0x02);
			input_report_key(dev, BTN_RIGHT,  data[8] & 0x04);

	 		if ((data[1] & 0x10) == 0) {				/* 4D mouse packets */

				input_report_key(dev, BTN_SIDE,   data[8] & 0x20);
				input_report_key(dev, BTN_EXTRA,  data[8] & 0x10);
				input_report_abs(dev, ABS_THROTTLE,  (data[8] & 0x08) ?
						 ((__u32)data[6] << 2) | ((data[7] >> 6) & 3) :
						 -((__u32)data[6] << 2) | ((data[7] >> 6) & 3));

			} else {						/* Lens cursor packets */

				input_report_key(dev, BTN_SIDE,   data[8] & 0x10);
				input_report_key(dev, BTN_EXTRA,  data[8] & 0x08);
			}
		}
	}
	
	input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
}

#define WACOM_INTUOS_TOOLS	(BIT(BTN_TOOL_BRUSH) | BIT(BTN_TOOL_PENCIL) | BIT(BTN_TOOL_AIRBRUSH) | BIT(BTN_TOOL_LENS))
#define WACOM_INTUOS_BUTTONS	(BIT(BTN_SIDE) | BIT(BTN_EXTRA))
#define WACOM_INTUOS_ABS	(BIT(ABS_TILT_X) | BIT(ABS_TILT_Y) | BIT(ABS_RZ) | BIT(ABS_THROTTLE))

struct wacom_features wacom_features[] = {
	{ "Wacom Penpartner",	 7,  5040,  3780,  255, 32, wacom_penpartner_irq,
		0, 0, 0, 0 },
	{ "Wacom Graphire",      8, 10206,  7422,  511, 32, wacom_graphire_irq,
		BIT(EV_REL), 0, BIT(REL_WHEEL), 0 },
	{ "Wacom Graphire2 4x5",     8, 10206,  7422,  511, 32, wacom_graphire_irq,
		BIT(EV_REL), 0, BIT(REL_WHEEL), 0 },
	{ "Wacom Graphire2 5x7",     8, 10206,  7422,  511, 32, wacom_graphire_irq,
		BIT(EV_REL), 0, BIT(REL_WHEEL), 0 },
	{ "Wacom Intuos 4x5",   10, 12700, 10360, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ "Wacom Intuos 6x8",   10, 20320, 15040, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ "Wacom Intuos 9x12",  10, 30480, 23060, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ "Wacom Intuos 12x12", 10, 30480, 30480, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ "Wacom Intuos 12x18", 10, 47720, 30480, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ "Wacom PL400",        8,  12328, 9256,   511, 32, wacom_pl_irq,
		0,  0, 0, 0 },
	{ "Wacom PL500",        8,  12328, 9256,   511, 32, wacom_pl_irq,
		0,  0, 0, 0 },
	{ "Wacom PL600",        8,  12328, 9256,   511, 32, wacom_pl_irq,
		0,  0, 0, 0 },
	{ "Wacom PL600SX",        8,  12328, 9256,   511, 32, wacom_pl_irq,
		0,  0, 0, 0 },
	{ "Wacom PL550",        8,  12328, 9256,   511, 32, wacom_pl_irq,
		0,  0, 0, 0 },
	{ "Wacom PL800",        8,  12328, 9256,   511, 32, wacom_pl_irq,
		0,  0, 0, 0 },
	{ "Wacom Intuos2 4x5",   10, 12700, 10360, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ "Wacom Intuos2 6x8",   10, 20320, 15040, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ "Wacom Intuos2 9x12",  10, 30480, 23060, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ "Wacom Intuos2 12x12", 10, 30480, 30480, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ "Wacom Intuos2 12x18", 10, 47720, 30480, 1023, 15, wacom_intuos_irq,
		0, WACOM_INTUOS_ABS, 0, WACOM_INTUOS_BUTTONS, WACOM_INTUOS_TOOLS },
	{ NULL , 0 }
};

struct usb_device_id wacom_ids[] = {
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x00), driver_info: 0 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x10), driver_info: 1 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x11), driver_info: 2 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x12), driver_info: 3 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x20), driver_info: 4 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x21), driver_info: 5 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x22), driver_info: 6 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x23), driver_info: 7 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x24), driver_info: 8 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x30), driver_info: 9 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x31), driver_info: 10 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x32), driver_info: 11 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x33), driver_info: 12 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x34), driver_info: 13 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x35), driver_info: 14 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x41), driver_info: 15 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x42), driver_info: 16 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x43), driver_info: 17 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x44), driver_info: 18 },
	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x45), driver_info: 19 },
	{ }
};

MODULE_DEVICE_TABLE(usb, wacom_ids);

static int wacom_open(struct input_dev *dev)
{
	struct wacom *wacom = dev->private;
	
	if (wacom->open++)
		return 0;

	wacom->irq.dev = wacom->usbdev;
	if (usb_submit_urb(&wacom->irq))
		return -EIO;

	return 0;
}

static void wacom_close(struct input_dev *dev)
{
	struct wacom *wacom = dev->private;

	if (!--wacom->open)
		usb_unlink_urb(&wacom->irq);
}

static void *wacom_probe(struct usb_device *dev, unsigned int ifnum, const struct usb_device_id *id)
{
	struct usb_endpoint_descriptor *endpoint;
	struct wacom *wacom;
	char rep_data[2] = {0x02, 0x02};
	
	if (!(wacom = kmalloc(sizeof(struct wacom), GFP_KERNEL))) return NULL;
	memset(wacom, 0, sizeof(struct wacom));

	wacom->features = wacom_features + id->driver_info;

	wacom->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_MSC) | wacom->features->evbit;
	wacom->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE) | BIT(ABS_DISTANCE) | BIT(ABS_WHEEL) | wacom->features->absbit;
	wacom->dev.relbit[0] |= wacom->features->relbit;
	wacom->dev.keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE) | wacom->features->btnbit;
	wacom->dev.keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) |
		BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2) | wacom->features->digibit;
	wacom->dev.mscbit[0] |= BIT(MSC_SERIAL);

	wacom->dev.absmax[ABS_X] = wacom->features->x_max;
	wacom->dev.absmax[ABS_Y] = wacom->features->y_max;
	wacom->dev.absmax[ABS_PRESSURE] = wacom->features->pressure_max;
	wacom->dev.absmax[ABS_DISTANCE] = wacom->features->distance_max;
	wacom->dev.absmax[ABS_TILT_X] = 127;
	wacom->dev.absmax[ABS_TILT_Y] = 127;
	wacom->dev.absmax[ABS_WHEEL] = 1023;

	wacom->dev.absmin[ABS_RZ] = -900;
	wacom->dev.absmax[ABS_RZ] = 899;
	wacom->dev.absmin[ABS_THROTTLE] = -1023;
	wacom->dev.absmax[ABS_THROTTLE] = 1023;

	wacom->dev.absfuzz[ABS_X] = 4;
	wacom->dev.absfuzz[ABS_Y] = 4;

	wacom->dev.private = wacom;
	wacom->dev.open = wacom_open;
	wacom->dev.close = wacom_close;

	wacom->dev.name = wacom->features->name;
	wacom->dev.idbus = BUS_USB;
	wacom->dev.idvendor = dev->descriptor.idVendor;
	wacom->dev.idproduct = dev->descriptor.idProduct;
	wacom->dev.idversion = dev->descriptor.bcdDevice;
	wacom->usbdev = dev;

	endpoint = dev->config[0].interface[ifnum].altsetting[0].endpoint + 0;

	usb_set_idle(dev, dev->config[0].interface[ifnum].altsetting[0].bInterfaceNumber, 0, 0);

	FILL_INT_URB(&wacom->irq, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress),
		     wacom->data, wacom->features->pktlen, wacom->features->irq, wacom, endpoint->bInterval);

	input_register_device(&wacom->dev);

	/* ask the tablet to report tablet data */
	usb_set_report(dev, ifnum, 3, 2, rep_data, 2);
	usb_set_report(dev, ifnum, 3, 5, rep_data, 0);
	usb_set_report(dev, ifnum, 3, 6, rep_data, 0);
	
	printk(KERN_INFO "input%d: %s on usb%d:%d.%d\n",
	       wacom->dev.number, wacom->features->name, dev->bus->busnum, dev->devnum, ifnum);

	return wacom;
}

static void wacom_disconnect(struct usb_device *dev, void *ptr)
{
	struct wacom *wacom = ptr;
	usb_unlink_urb(&wacom->irq);
	input_unregister_device(&wacom->dev);
	kfree(wacom);
}

static struct usb_driver wacom_driver = {
	name:		"wacom",
	probe:		wacom_probe,
	disconnect:	wacom_disconnect,
	id_table:	wacom_ids,
};

static int __init wacom_init(void)
{
	usb_register(&wacom_driver);
	info(DRIVER_VERSION " " DRIVER_AUTHOR);
	info(DRIVER_DESC);
	return 0;
}

static void __exit wacom_exit(void)
{
	usb_deregister(&wacom_driver);
}

module_init(wacom_init);
module_exit(wacom_exit);