aiptek.c

linux-2.6.15.6

	usb_kill_urb(aiptek->urb);
}

/***********************************************************************
 * aiptek_set_report and aiptek_get_report() are borrowed from Linux 2.4.x,
 * where they were known as usb_set_report and usb_get_report.
 */
static int
aiptek_set_report(struct aiptek *aiptek,
		  unsigned char report_type,
		  unsigned char report_id, void *buffer, int size)
{
	return usb_control_msg(aiptek->usbdev,
			       usb_sndctrlpipe(aiptek->usbdev, 0),
			       USB_REQ_SET_REPORT,
			       USB_TYPE_CLASS | USB_RECIP_INTERFACE |
			       USB_DIR_OUT, (report_type << 8) + report_id,
			       aiptek->ifnum, buffer, size, 5000);
}

static int
aiptek_get_report(struct aiptek *aiptek,
		  unsigned char report_type,
		  unsigned char report_id, void *buffer, int size)
{
	return usb_control_msg(aiptek->usbdev,
			       usb_rcvctrlpipe(aiptek->usbdev, 0),
			       USB_REQ_GET_REPORT,
			       USB_TYPE_CLASS | USB_RECIP_INTERFACE |
			       USB_DIR_IN, (report_type << 8) + report_id,
			       aiptek->ifnum, buffer, size, 5000);
}

/***********************************************************************
 * Send a command to the tablet.
 */
static int
aiptek_command(struct aiptek *aiptek, unsigned char command, unsigned char data)
{
	const int sizeof_buf = 3 * sizeof(u8);
	int ret;
	u8 *buf;

	buf = kmalloc(sizeof_buf, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	buf[0] = 2;
	buf[1] = command;
	buf[2] = data;

	if ((ret =
	     aiptek_set_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
		dbg("aiptek_program: failed, tried to send: 0x%02x 0x%02x",
		    command, data);
	}
	kfree(buf);
	return ret < 0 ? ret : 0;
}

/***********************************************************************
 * Retrieve information from the tablet. Querying info is defined as first
 * sending the {command,data} sequence as a command, followed by a wait
 * (aka, "programmaticDelay") and then a "read" request.
 */
static int
aiptek_query(struct aiptek *aiptek, unsigned char command, unsigned char data)
{
	const int sizeof_buf = 3 * sizeof(u8);
	int ret;
	u8 *buf;

	buf = kmalloc(sizeof_buf, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	buf[0] = 2;
	buf[1] = command;
	buf[2] = data;

	if (aiptek_command(aiptek, command, data) != 0) {
		kfree(buf);
		return -EIO;
	}
	msleep(aiptek->curSetting.programmableDelay);

	if ((ret =
	     aiptek_get_report(aiptek, 3, 2, buf, sizeof_buf)) != sizeof_buf) {
		dbg("aiptek_query failed: returned 0x%02x 0x%02x 0x%02x",
		    buf[0], buf[1], buf[2]);
		ret = -EIO;
	} else {
		ret = le16_to_cpu(get_unaligned((__le16 *) (buf + 1)));
	}
	kfree(buf);
	return ret;
}

/***********************************************************************
 * Program the tablet into either absolute or relative mode.
 * We also get information about the tablet's size.
 */
static int aiptek_program_tablet(struct aiptek *aiptek)
{
	int ret;
	/* Execute Resolution500LPI */
	if ((ret = aiptek_command(aiptek, 0x18, 0x04)) < 0)
		return ret;

	/* Query getModelCode */
	if ((ret = aiptek_query(aiptek, 0x02, 0x00)) < 0)
		return ret;
	aiptek->features.modelCode = ret & 0xff;

	/* Query getODMCode */
	if ((ret = aiptek_query(aiptek, 0x03, 0x00)) < 0)
		return ret;
	aiptek->features.odmCode = ret;

	/* Query getFirmwareCode */
	if ((ret = aiptek_query(aiptek, 0x04, 0x00)) < 0)
		return ret;
	aiptek->features.firmwareCode = ret;

	/* Query getXextension */
	if ((ret = aiptek_query(aiptek, 0x01, 0x00)) < 0)
		return ret;
	aiptek->inputdev->absmin[ABS_X] = 0;
	aiptek->inputdev->absmax[ABS_X] = ret - 1;

	/* Query getYextension */
	if ((ret = aiptek_query(aiptek, 0x01, 0x01)) < 0)
		return ret;
	aiptek->inputdev->absmin[ABS_Y] = 0;
	aiptek->inputdev->absmax[ABS_Y] = ret - 1;

	/* Query getPressureLevels */
	if ((ret = aiptek_query(aiptek, 0x08, 0x00)) < 0)
		return ret;
	aiptek->inputdev->absmin[ABS_PRESSURE] = 0;
	aiptek->inputdev->absmax[ABS_PRESSURE] = ret - 1;

	/* Depending on whether we are in absolute or relative mode, we will
	 * do a switchToTablet(absolute) or switchToMouse(relative) command.
	 */
	if (aiptek->curSetting.coordinateMode ==
	    AIPTEK_COORDINATE_ABSOLUTE_MODE) {
		/* Execute switchToTablet */
		if ((ret = aiptek_command(aiptek, 0x10, 0x01)) < 0) {
			return ret;
		}
	} else {
		/* Execute switchToMouse */
		if ((ret = aiptek_command(aiptek, 0x10, 0x00)) < 0) {
			return ret;
		}
	}

	/* Enable the macro keys */
	if ((ret = aiptek_command(aiptek, 0x11, 0x02)) < 0)
		return ret;
#if 0
	/* Execute FilterOn */
	if ((ret = aiptek_command(aiptek, 0x17, 0x00)) < 0)
		return ret;
#endif

	/* Execute AutoGainOn */
	if ((ret = aiptek_command(aiptek, 0x12, 0xff)) < 0)
		return ret;

	/* Reset the eventCount, so we track events from last (re)programming
	 */
	aiptek->diagnostic = AIPTEK_DIAGNOSTIC_NA;
	aiptek->eventCount = 0;

	return 0;
}

/***********************************************************************
 * Sysfs functions. Sysfs prefers that individually-tunable parameters
 * exist in their separate pseudo-files. Summary data that is immutable
 * may exist in a singular file so long as you don't define a writeable
 * interface.
 */

/***********************************************************************
 * support the 'size' file -- display support
 */
static ssize_t show_tabletSize(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

	return snprintf(buf, PAGE_SIZE, "%dx%d\n",
			aiptek->inputdev->absmax[ABS_X] + 1,
			aiptek->inputdev->absmax[ABS_Y] + 1);
}

/* These structs define the sysfs files, param #1 is the name of the
 * file, param 2 is the file permissions, param 3 & 4 are to the
 * output generator and input parser routines. Absence of a routine is
 * permitted -- it only means can't either 'cat' the file, or send data
 * to it.
 */
static DEVICE_ATTR(size, S_IRUGO, show_tabletSize, NULL);

/***********************************************************************
 * support routines for the 'product_id' file
 */
static ssize_t show_tabletProductId(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

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

static DEVICE_ATTR(product_id, S_IRUGO, show_tabletProductId, NULL);

/***********************************************************************
 * support routines for the 'vendor_id' file
 */
static ssize_t show_tabletVendorId(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);

	if (aiptek == NULL)
		return 0;

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

static DEVICE_ATTR(vendor_id, S_IRUGO, show_tabletVendorId, NULL);

/***********************************************************************
 * support routines for the 'vendor' file
 */
static ssize_t show_tabletManufacturer(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);
	int retval;

	if (aiptek == NULL)
		return 0;

	retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->manufacturer);
	return retval;
}

static DEVICE_ATTR(vendor, S_IRUGO, show_tabletManufacturer, NULL);

/***********************************************************************
 * support routines for the 'product' file
 */
static ssize_t show_tabletProduct(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);
	int retval;

	if (aiptek == NULL)
		return 0;

	retval = snprintf(buf, PAGE_SIZE, "%s\n", aiptek->usbdev->product);
	return retval;
}

static DEVICE_ATTR(product, S_IRUGO, show_tabletProduct, NULL);

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

	if (aiptek == NULL)
		return 0;

	switch (aiptek->curSetting.pointerMode) {
	case AIPTEK_POINTER_ONLY_STYLUS_MODE:
		s = "stylus";
		break;

	case AIPTEK_POINTER_ONLY_MOUSE_MODE:
		s = "mouse";
		break;

	case AIPTEK_POINTER_EITHER_MODE:
		s = "either";
		break;

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

static ssize_t
store_tabletPointerMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);
	if (aiptek == NULL)
		return 0;

	if (strcmp(buf, "stylus") == 0) {
		aiptek->newSetting.pointerMode =
		    AIPTEK_POINTER_ONLY_STYLUS_MODE;
	} else if (strcmp(buf, "mouse") == 0) {
		aiptek->newSetting.pointerMode = AIPTEK_POINTER_ONLY_MOUSE_MODE;
	} else if (strcmp(buf, "either") == 0) {
		aiptek->newSetting.pointerMode = AIPTEK_POINTER_EITHER_MODE;
	}
	return count;
}

static DEVICE_ATTR(pointer_mode,
		   S_IRUGO | S_IWUGO,
		   show_tabletPointerMode, store_tabletPointerMode);

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

	if (aiptek == NULL)
		return 0;

	switch (aiptek->curSetting.coordinateMode) {
	case AIPTEK_COORDINATE_ABSOLUTE_MODE:
		s = "absolute";
		break;

	case AIPTEK_COORDINATE_RELATIVE_MODE:
		s = "relative";
		break;

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

static ssize_t
store_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct aiptek *aiptek = dev_get_drvdata(dev);
	if (aiptek == NULL)
		return 0;

	if (strcmp(buf, "absolute") == 0) {
		aiptek->newSetting.pointerMode =
		    AIPTEK_COORDINATE_ABSOLUTE_MODE;
	} else if (strcmp(buf, "relative") == 0) {
		aiptek->newSetting.pointerMode =
		    AIPTEK_COORDINATE_RELATIVE_MODE;
	}
	return count;
}

static DEVICE_ATTR(coordinate_mode,
		   S_IRUGO | S_IWUGO,
		   show_tabletCoordinateMode, store_tabletCoordinateMode);

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

	if (aiptek == NULL)
		return 0;

	switch (TOOL_BUTTON(aiptek->curSetting.toolMode)) {
	case AIPTEK_TOOL_BUTTON_MOUSE_MODE:
		s = "mouse";
		break;

	case AIPTEK_TOOL_BUTTON_ERASER_MODE:
		s = "eraser";
		break;

	case AIPTEK_TOOL_BUTTON_PENCIL_MODE:
		s = "pencil";
		break;

	case AIPTEK_TOOL_BUTTON_PEN_MODE:
		s = "pen";
		break;

	case AIPTEK_TOOL_BUTTON_BRUSH_MODE:
		s = "brush";
		break;

	case AIPTEK_TOOL_BUTTON_AIRBRUSH_MODE:
		s = "airbrush";
		break;

	case AIPTEK_TOOL_BUTTON_LENS_MODE: