driver for Hanvon graphic tablet WL0604M

[CalvinK]

Hi,
It seems that the Hanvon drawing tablets don't cause very much ado. Only one closed thread to consider on this forum. However, I bought such a tablet and cannot use it with Raring. I downloaded a driver at http://linux.fjfi.cvut.cz/~taxman/hw/hanvon/ but I am unable to compile it probably due to the kernel (3. in raring instead of 2.6. ), I suppose. Similarly I downloaded the hanvon.dkms without success. As Hanvon doesn't support Linux, is there a mean to coerce this tablet to work on my laptop ?
Thank you very much for your help

[DeathByDenim]

Well, no promises, but if you change dbg on lines 79 and 82 to printk and likewise change err on line 115 to printk in hanvon.c, then at least it will compile and make a module for you. Absolutely no guarantee that that will work of course... You can try loading that module with modprobe and see what happens.

[CalvinK]

Thank you very much for the tip. Indeed, I have obtained a module but it doesn't enable the tablet.

[DeathByDenim]

There's a newer version (0.5) to be found here: http://forschung.wi.uni-passau.de/~o...nvon/index.cgi
It has support for more tablets than version 0.4 that you tried.

What's your device ID though?
If you plug it in using USB then you can can find it if you type

lsusb

It should look like 0b57: xxxx, where xxxx is your device ID.

[CalvinK]

For the first question, I am going to try it when I have a little more time. For the second question the id of the tablet is (result of lsusb) :
Bus 003 Device 009: ID 0b57:8508 Beijing HanwangTechnology Co., Ltd
Thanks for your help

[DeathByDenim]

Ah, that ID is not in the list. Then you need to add this at line 30:

#define USB_PRODUCT_ID_WL0604M 0x8508

and this at line 140

{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_WL0604M) },

Good luck!

[CalvinK]

Done. However, if the compilation runs without any error message with this new version of hanvon.c, the tablet doesn't work. When I type xinput the tablet doesn't appear
thanks very much

[DeathByDenim]

So, the module loads fine when you use

sudo insmod ./hanvon.ko

, but then nothing happens?

Hmm, well, I'm afraid the driver isn't compatible with your tablet then...
I've added the code below, just in case there was a mistake copying my alterations.

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb/input.h>
#include <asm/unaligned.h>

#define DRIVER_VERSION "0.5"
#define DRIVER_AUTHOR "Ondra Havel <ondra.havel@gmail.com>"
#define DRIVER_DESC "USB Hanvon tablet driver"
#define DRIVER_LICENSE "GPL"

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);

#define USB_VENDOR_ID_HANVON	0x0b57
#define USB_PRODUCT_ID_AM3M		0x8528
#define USB_PRODUCT_ID_AM0806	0x8502
#define USB_PRODUCT_ID_AM0605	0x8503
#define USB_PRODUCT_ID_AM1107	0x8505
#define USB_PRODUCT_ID_AM1209	0x8501
#define USB_PRODUCT_ID_RL0604	0x851f
#define USB_PRODUCT_ID_RL0504	0x851d
#define USB_PRODUCT_ID_GP0806	0x8039
#define USB_PRODUCT_ID_GP0806B	0x8511
#define USB_PRODUCT_ID_GP0605	0x8512
#define USB_PRODUCT_ID_GP0504	0x8037
#define USB_PRODUCT_ID_NXS1513	0x8030
#define USB_PRODUCT_ID_WL0604M	0x8508

#define USB_AM_PACKET_LEN	10

static int lbuttons[]={BTN_0,BTN_1,BTN_2,BTN_3};	/* reported on all AMs */
static int rbuttons[]={BTN_4,BTN_5,BTN_6,BTN_7};	/* reported on AM1107+ */

#define AM_WHEEL_THRESHOLD	4

#define AM_MAX_ABS_X	0x27de
#define AM_MAX_ABS_Y	0x1cfe
#define AM_MAX_TILT_X	0x3f
#define AM_MAX_TILT_Y	0x7f
#define AM_MAX_PRESSURE	0x400

struct hanvon {
	unsigned char *data;
	dma_addr_t data_dma;
	struct input_dev *dev;
	struct usb_device *usbdev;
	struct urb *irq;
	int old_wheel_pos;
	char phys[32];
};

static void report_buttons(struct hanvon *hanvon, int buttons[],unsigned char dta)
{
	struct input_dev *dev = hanvon->dev;

	if((dta & 0xf0) == 0xa0) {
		input_report_key(dev, buttons[1], dta & 0x02);
		input_report_key(dev, buttons[2], dta & 0x04);
		input_report_key(dev, buttons[3], dta & 0x08);
	} else {
		if(dta <= 0x3f) {	/* slider area active */
			int diff = dta - hanvon->old_wheel_pos;
			if(abs(diff) < AM_WHEEL_THRESHOLD)
				input_report_rel(dev, REL_WHEEL, diff);

			hanvon->old_wheel_pos = dta;
		}
	}
}

static void hanvon_irq(struct urb *urb)
{
	struct hanvon *hanvon = urb->context;
	unsigned char *data = hanvon->data;
	struct input_dev *dev = hanvon->dev;
	int retval;

	switch (urb->status) {
		case 0:
			/* success */
			break;
		case -ECONNRESET:
		case -ENOENT:
		case -ESHUTDOWN:
			/* this urb is terminated, clean up */
			printk("%s - urb shutting down with status: %d", __func__, urb->status);
			return;
		default:
			printk("%s - nonzero urb status received: %d", __func__, urb->status);
			goto exit;
	}

	switch(data[0]) {
		case 0x01:	/* button press */
			if(data[1]==0x55)	/* left side */
				report_buttons(hanvon,lbuttons,data[2]);

			if(data[3]==0xaa)	/* right side (am1107, am1209) */
				report_buttons(hanvon,rbuttons,data[4]);
			break;

		case 0x02:	/* position change */
			if((data[1] & 0xf0) != 0) {
				input_report_abs(dev, ABS_X, get_unaligned_be16(&data[2]));
				input_report_abs(dev, ABS_Y, get_unaligned_be16(&data[4]));
				input_report_abs(dev, ABS_TILT_X, data[7] & 0x3f);
				input_report_abs(dev, ABS_TILT_Y, data[8]);
				input_report_abs(dev, ABS_PRESSURE, get_unaligned_be16(&data[6])>>6);
			}

		input_report_key(dev, BTN_LEFT, data[1] & 0x1);
		input_report_key(dev, BTN_RIGHT, data[1] & 0x2);		/* stylus button pressed (right click) */
		input_report_key(dev, lbuttons[0], data[1] & 0x20);
		break;
	}

	input_sync(dev);

exit:
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
		printk("%s - usb_submit_urb failed with result %d", __func__, retval);
}

static struct usb_device_id hanvon_ids[] = {
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM3M) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM1209) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM1107) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM0806) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM0605) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_RL0604) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_RL0504) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0806) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0806B) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0605) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0504) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_NXS1513) },
	{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_WL0604M) },
	{ }
};

MODULE_DEVICE_TABLE(usb, hanvon_ids);

static int hanvon_open(struct input_dev *dev)
{
	struct hanvon *hanvon = input_get_drvdata(dev);

	hanvon->old_wheel_pos = -AM_WHEEL_THRESHOLD-1;
	hanvon->irq->dev = hanvon->usbdev;
	if (usb_submit_urb(hanvon->irq, GFP_KERNEL))
		return -EIO;

	return 0;
}

static void hanvon_close(struct input_dev *dev)
{
	struct hanvon *hanvon = input_get_drvdata(dev);

	usb_kill_urb(hanvon->irq);
}

static int hanvon_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_endpoint_descriptor *endpoint;
	struct hanvon *hanvon;
	struct input_dev *input_dev;
	int error = -ENOMEM, i;

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

	hanvon->data = (unsigned char *)usb_alloc_coherent(dev, USB_AM_PACKET_LEN, GFP_KERNEL, &hanvon->data_dma);
	if (!hanvon->data)
		goto fail1;

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

	hanvon->usbdev = dev;
	hanvon->dev = input_dev;

	usb_make_path(dev, hanvon->phys, sizeof(hanvon->phys));
	strlcat(hanvon->phys, "/input0", sizeof(hanvon->phys));

	input_dev->name = "Hanvon Artmaster I tablet";
	input_dev->phys = hanvon->phys;
	usb_to_input_id(dev, &input_dev->id);
	input_dev->dev.parent = &intf->dev;

	input_set_drvdata(input_dev, hanvon);

	input_dev->open = hanvon_open;
	input_dev->close = hanvon_close;

	input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) | BIT_MASK(EV_REL);
	input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_TOUCH);
	input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
	for(i=0;i<sizeof(lbuttons)/sizeof(lbuttons[0]);i++)
		__set_bit(lbuttons[i], input_dev->keybit);
	for(i=0;i<sizeof(rbuttons)/sizeof(rbuttons[0]);i++)
		__set_bit(rbuttons[i], input_dev->keybit);

	input_set_abs_params(input_dev, ABS_X, 0, AM_MAX_ABS_X, 4, 0);
	input_set_abs_params(input_dev, ABS_Y, 0, AM_MAX_ABS_Y, 4, 0);
	input_set_abs_params(input_dev, ABS_TILT_X, 0, AM_MAX_TILT_X, 0, 0);
	input_set_abs_params(input_dev, ABS_TILT_Y, 0, AM_MAX_TILT_Y, 0, 0);
	input_set_abs_params(input_dev, ABS_PRESSURE, 0, AM_MAX_PRESSURE, 0, 0);
	input_set_capability(input_dev, EV_REL, REL_WHEEL);

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

	usb_fill_int_urb(hanvon->irq, dev,
			 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
			 hanvon->data, USB_AM_PACKET_LEN,
			 hanvon_irq, hanvon, endpoint->bInterval);
	hanvon->irq->transfer_dma = hanvon->data_dma;
	hanvon->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

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

	usb_set_intfdata(intf, hanvon);
	return 0;

fail3:	usb_free_urb(hanvon->irq);
fail2:	usb_free_coherent(dev, USB_AM_PACKET_LEN, hanvon->data, hanvon->data_dma);
fail1:	input_free_device(input_dev);
	kfree(hanvon);
	return error;
}

static void hanvon_disconnect(struct usb_interface *intf)
{
	struct hanvon *hanvon = usb_get_intfdata(intf);

	usb_set_intfdata(intf, NULL);
	if (hanvon) {
		usb_kill_urb(hanvon->irq);
		input_unregister_device(hanvon->dev);
		usb_free_urb(hanvon->irq);
		usb_free_coherent(interface_to_usbdev(intf), USB_AM_PACKET_LEN, hanvon->data, hanvon->data_dma);
		kfree(hanvon);
	}
}

static struct usb_driver hanvon_driver = {
	.name =	"hanvon",
	.probe = hanvon_probe,
	.disconnect = hanvon_disconnect,
	.id_table =	hanvon_ids,
};

static int __init hanvon_init(void)
{
	int rv;

	if((rv = usb_register(&hanvon_driver)) != 0)
		return rv;

	printk(DRIVER_DESC " " DRIVER_VERSION "\n");

	return 0;
}

static void __exit hanvon_exit(void)
{
	usb_deregister(&hanvon_driver);
}

module_init(hanvon_init);
module_exit(hanvon_exit);

[CalvinK]

probably I should have made some typing mistakes. Thank you for your great code. Now xinput displays Hanvon Artmaster I tablet but my not-Artmaster doesn't work. I am a little surprised because the driver is the same for this tablet and Artmaster on Mac and there is a common driver for the different tablets of this manufacturer for Windows. Thanks to you I'm making progress. The holy grail is within reach

[DeathByDenim]

Ah, yeah. It says "Hanvon Artmaster I" regardless of the actual device plugged in, because that's manually set on line 193. The alterations only forced the driver to load for your tablet without us actually knowing if it would work.
Apparently not though, so that's a shame. This in turn means that you need a driver that's specifically written for your tablet. The only way to get it working now is to write a custom driver with code specific to the WL0604M, but I'm afraid I can't help you with that, since I don't own a Hanvon tablet. Also, it's pretty hard to write drivers.

It's likely that the common drivers for Mac and Windows contain code specifically written for the WL0604M that's not in the Linux driver.

I'm afraid this is a dead-end and the tablet won't work on Linux...