aiptek.c

h内核

		break;

	default:
		s = "unknown";
		break;
	}
	return snprintf(buf, PAGE_SIZE, "%s\n", s);
}

static ssize_t
store_tabletMouseMiddle(struct device *dev, const char *buf, size_t count)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	if (strcmp(buf, "left") == 0) {
		aiptek->newSetting.mouseButtonMiddle = AIPTEK_MOUSE_LEFT_BUTTON;
	} else if (strcmp(buf, "middle") == 0) {
		aiptek->newSetting.mouseButtonMiddle =
		    AIPTEK_MOUSE_MIDDLE_BUTTON;
	} else if (strcmp(buf, "right") == 0) {
		aiptek->newSetting.mouseButtonMiddle =
		    AIPTEK_MOUSE_RIGHT_BUTTON;
	}
	return count;
}

static DEVICE_ATTR(mouse_middle,
		   S_IRUGO | S_IWUGO,
		   show_tabletMouseMiddle, store_tabletMouseMiddle);

/***********************************************************************
 * support routines for the 'mouse_right' file. Note that this file
 * both displays current setting and allows for setting changing.
 */
static ssize_t show_tabletMouseRight(struct device *dev, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);
	char *s;

	if (aiptek == NULL)
		return 0;

	switch (aiptek->curSetting.mouseButtonRight) {
	case AIPTEK_MOUSE_LEFT_BUTTON:
		s = "left";
		break;

	case AIPTEK_MOUSE_MIDDLE_BUTTON:
		s = "middle";
		break;

	case AIPTEK_MOUSE_RIGHT_BUTTON:
		s = "right";
		break;

	default:
		s = "unknown";
		break;
	}
	return snprintf(buf, PAGE_SIZE, "%s\n", s);
}

static ssize_t
store_tabletMouseRight(struct device *dev, const char *buf, size_t count)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	if (strcmp(buf, "left") == 0) {
		aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_LEFT_BUTTON;
	} else if (strcmp(buf, "middle") == 0) {
		aiptek->newSetting.mouseButtonRight =
		    AIPTEK_MOUSE_MIDDLE_BUTTON;
	} else if (strcmp(buf, "right") == 0) {
		aiptek->newSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
	}
	return count;
}

static DEVICE_ATTR(mouse_right,
		   S_IRUGO | S_IWUGO,
		   show_tabletMouseRight, store_tabletMouseRight);

/***********************************************************************
 * support routines for the 'wheel' file. Note that this file
 * both displays current setting and allows for setting changing.
 */
static ssize_t show_tabletWheel(struct device *dev, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
		return snprintf(buf, PAGE_SIZE, "disable\n");
	} else {
		return snprintf(buf, PAGE_SIZE, "%d\n",
				aiptek->curSetting.wheel);
	}
}

static ssize_t
store_tabletWheel(struct device *dev, const char *buf, size_t count)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	aiptek->newSetting.wheel = (int)simple_strtol(buf, NULL, 10);
	return count;
}

static DEVICE_ATTR(wheel,
		   S_IRUGO | S_IWUGO, show_tabletWheel, store_tabletWheel);

/***********************************************************************
 * support routines for the 'execute' file. Note that this file
 * both displays current setting and allows for setting changing.
 */
static ssize_t show_tabletExecute(struct device *dev, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	/* There is nothing useful to display, so a one-line manual
	 * is in order...
	 */
	return snprintf(buf, PAGE_SIZE,
			"Write anything to this file to program your tablet.\n");
}

static ssize_t
store_tabletExecute(struct device *dev, const char *buf, size_t count)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	/* We do not care what you write to this file. Merely the action
	 * of writing to this file triggers a tablet reprogramming.
	 */
	memcpy(&aiptek->curSetting, &aiptek->newSetting,
	       sizeof(struct aiptek_settings));

	if (aiptek_program_tablet(aiptek) < 0)
		return -EIO;

	return count;
}

static DEVICE_ATTR(execute,
		   S_IRUGO | S_IWUGO, show_tabletExecute, store_tabletExecute);

/***********************************************************************
 * support routines for the 'odm_code' file. Note that this file
 * only displays current setting.
 */
static ssize_t show_tabletODMCode(struct device *dev, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.odmCode);
}

static DEVICE_ATTR(odm_code, S_IRUGO, show_tabletODMCode, NULL);

/***********************************************************************
 * support routines for the 'model_code' file. Note that this file
 * only displays current setting.
 */
static ssize_t show_tabletModelCode(struct device *dev, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.modelCode);
}

static DEVICE_ATTR(model_code, S_IRUGO, show_tabletModelCode, NULL);

/***********************************************************************
 * support routines for the 'firmware_code' file. Note that this file
 * only displays current setting.
 */
static ssize_t show_firmwareCode(struct device *dev, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	return snprintf(buf, PAGE_SIZE, "%04x\n",
			aiptek->features.firmwareCode);
}

static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);

/***********************************************************************
 * This routine removes all existing sysfs files managed by this device
 * driver.
 */
static void aiptek_delete_files(struct device *dev)
{
	device_remove_file(dev, &dev_attr_size);
	device_remove_file(dev, &dev_attr_product_id);
	device_remove_file(dev, &dev_attr_vendor_id);
	device_remove_file(dev, &dev_attr_vendor);
	device_remove_file(dev, &dev_attr_product);
	device_remove_file(dev, &dev_attr_pointer_mode);
	device_remove_file(dev, &dev_attr_coordinate_mode);
	device_remove_file(dev, &dev_attr_tool_mode);
	device_remove_file(dev, &dev_attr_xtilt);
	device_remove_file(dev, &dev_attr_ytilt);
	device_remove_file(dev, &dev_attr_jitter);
	device_remove_file(dev, &dev_attr_delay);
	device_remove_file(dev, &dev_attr_input_path);
	device_remove_file(dev, &dev_attr_event_count);
	device_remove_file(dev, &dev_attr_diagnostic);
	device_remove_file(dev, &dev_attr_odm_code);
	device_remove_file(dev, &dev_attr_model_code);
	device_remove_file(dev, &dev_attr_firmware_code);
	device_remove_file(dev, &dev_attr_stylus_lower);
	device_remove_file(dev, &dev_attr_stylus_upper);
	device_remove_file(dev, &dev_attr_mouse_left);
	device_remove_file(dev, &dev_attr_mouse_middle);
	device_remove_file(dev, &dev_attr_mouse_right);
	device_remove_file(dev, &dev_attr_wheel);
	device_remove_file(dev, &dev_attr_execute);
}

/***********************************************************************
 * This routine creates the sysfs files managed by this device
 * driver.
 */
static int aiptek_add_files(struct device *dev)
{
	int ret;

	if ((ret = device_create_file(dev, &dev_attr_size)) ||
	    (ret = device_create_file(dev, &dev_attr_product_id)) ||
	    (ret = device_create_file(dev, &dev_attr_vendor_id)) ||
	    (ret = device_create_file(dev, &dev_attr_vendor)) ||
	    (ret = device_create_file(dev, &dev_attr_product)) ||
	    (ret = device_create_file(dev, &dev_attr_pointer_mode)) ||
	    (ret = device_create_file(dev, &dev_attr_coordinate_mode)) ||
	    (ret = device_create_file(dev, &dev_attr_tool_mode)) ||
	    (ret = device_create_file(dev, &dev_attr_xtilt)) ||
	    (ret = device_create_file(dev, &dev_attr_ytilt)) ||
	    (ret = device_create_file(dev, &dev_attr_jitter)) ||
	    (ret = device_create_file(dev, &dev_attr_delay)) ||
	    (ret = device_create_file(dev, &dev_attr_input_path)) ||
	    (ret = device_create_file(dev, &dev_attr_event_count)) ||
	    (ret = device_create_file(dev, &dev_attr_diagnostic)) ||
	    (ret = device_create_file(dev, &dev_attr_odm_code)) ||
	    (ret = device_create_file(dev, &dev_attr_model_code)) ||
	    (ret = device_create_file(dev, &dev_attr_firmware_code)) ||
	    (ret = device_create_file(dev, &dev_attr_stylus_lower)) ||
	    (ret = device_create_file(dev, &dev_attr_stylus_upper)) ||
	    (ret = device_create_file(dev, &dev_attr_mouse_left)) ||
	    (ret = device_create_file(dev, &dev_attr_mouse_middle)) ||
	    (ret = device_create_file(dev, &dev_attr_mouse_right)) ||
	    (ret = device_create_file(dev, &dev_attr_wheel)) ||
	    (ret = device_create_file(dev, &dev_attr_execute))) {
		err("aiptek: killing own sysfs device files\n");
		aiptek_delete_files(dev);
	}
	return ret;
}

/***********************************************************************
 * This routine is called when a tablet has been identified. It basically
 * sets up the tablet and the driver's internal structures.
 */
static int
aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *usbdev = interface_to_usbdev(intf);
	struct usb_endpoint_descriptor *endpoint;
	struct aiptek *aiptek;
	struct input_dev *inputdev;
	struct input_handle *inputhandle;
	struct list_head *node, *next;
	char path[64 + 1];
	int i;
	int speeds[] = { 0,
		AIPTEK_PROGRAMMABLE_DELAY_50,
		AIPTEK_PROGRAMMABLE_DELAY_400,
		AIPTEK_PROGRAMMABLE_DELAY_25,
		AIPTEK_PROGRAMMABLE_DELAY_100,
		AIPTEK_PROGRAMMABLE_DELAY_200,
		AIPTEK_PROGRAMMABLE_DELAY_300
	};

	/* programmableDelay is where the command-line specified
	 * delay is kept. We make it the first element of speeds[],
	 * so therefore, your override speed is tried first, then the
	 * remainder. Note that the default value of 400ms will be tried
	 * if you do not specify any command line parameter.
	 */
	speeds[0] = programmableDelay;

	if ((aiptek = kmalloc(sizeof(struct aiptek), GFP_KERNEL)) == NULL)
		return -ENOMEM;
	memset(aiptek, 0, sizeof(struct aiptek));

	aiptek->data = usb_buffer_alloc(usbdev, AIPTEK_PACKET_LENGTH,
					SLAB_ATOMIC, &aiptek->data_dma);
	if (aiptek->data == NULL) {
		kfree(aiptek);
		return -ENOMEM;
	}

	aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
	if (aiptek->urb == NULL) {
		usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
				aiptek->data_dma);
		kfree(aiptek);
		return -ENOMEM;
	}

	/* Set up the curSettings struct. Said struct contains the current
	 * programmable parameters. The newSetting struct contains changes
	 * the user makes to the settings via the sysfs interface. Those
	 * changes are not "committed" to curSettings until the user
	 * writes to the sysfs/.../execute file.
	 */
	aiptek->curSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
	aiptek->curSetting.coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE;
	aiptek->curSetting.toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE;
	aiptek->curSetting.xTilt = AIPTEK_TILT_DISABLE;
	aiptek->curSetting.yTilt = AIPTEK_TILT_DISABLE;
	aiptek->curSetting.mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON;
	aiptek->curSetting.mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON;
	aiptek->curSetting.mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON;
	aiptek->curSetting.stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON;
	aiptek->curSetting.stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON;
	aiptek->curSetting.jitterDelay = jitterDelay;
	aiptek->curSetting.programmableDelay = programmableDelay;

	/* Both structs should have equivalent settings
	 */
	memcpy(&aiptek->newSetting, &aiptek->curSetting,
	       sizeof(struct aiptek_settings));

	/* Now program the capacities of the tablet, in terms of being
	 * an input device.
	 */
	aiptek->inputdev.evbit[0] |= BIT(EV_KEY)
	    | BIT(EV_ABS)
	    | BIT(EV_REL)
	    | BIT(EV_MSC);

	aiptek->inputdev.absbit[0] |=
	    (BIT(ABS_X) |
	     BIT(ABS_Y) |
	     BIT(ABS_PRESSURE) |
	     BIT(ABS_TILT_X) |
	     BIT(ABS_TILT_Y) | BIT(ABS_WHEEL) | BIT(ABS_MISC));

	aiptek->inputdev.relbit[0] |=
	    (BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL) | BIT(REL_MISC));

	aiptek->inputdev.keybit[LONG(BTN_LEFT)] |=
	    (BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE));

	aiptek->inputdev.keybit[LONG(BTN_DIGI)] |=
	    (BIT(BTN_TOOL_PEN) |
	     BIT(BTN_TOOL_RUBBER) |
	     BIT(BTN_TOOL_PENCIL) |
	     BIT(BTN_TOOL_AIRBRUSH) |
	     BIT(BTN_TOOL_BRUSH) |
	     BIT(BTN_TOOL_MOUSE) |
	     BIT(BTN_TOOL_LENS) |
	     BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2));

	aiptek->inputdev.mscbit[0] = BIT(MSC_SERIAL);

	/* Programming the tablet macro keys needs to be done with a for loop
	 * as the keycodes are discontiguous.
	 */
	for (i = 0; i < sizeof(macroKeyEvents) / sizeof(macroKeyEvents[0]); ++i)
		set_bit(macroKeyEvents[i], aiptek->inputdev.keybit);

	/* Set up client data, pointers to open and close routines
	 * for the input device.
	 */
	aiptek->inputdev.private = aiptek;
	aiptek->inputdev.open = aiptek_open;
	aiptek->inputdev.close = aiptek_close;

	/* Determine the usb devices' physical path.
	 * Asketh not why we always pretend we're using "../input0",
	 * but I suspect this will have to be refactored one
	 * day if a single USB device can be a keyboard & a mouse
	 * & a tablet, and the inputX number actually will tell
	 * us something...
	 */
	if (usb_make_path(usbdev, path, 64) > 0)
		sprintf(aiptek->features.usbPath, "%s/input0", path);

	/* Program the input device coordinate capacities. We do not yet
	 * know what maximum X, Y, and Z values are, so we're putting fake
	 * values in. Later, we'll ask the tablet to put in the correct
	 * values.