hanvon-linux/hanvon.c

274 lines
7.1 KiB
C
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#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb/input.h>
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#define DRIVER_VERSION "0.4b"
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#define DRIVER_AUTHOR "Ondra Havel <ondra.havel@gmail.com>"
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#define DRIVER_DESC "USB Hanvon tablet driver"
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#define DRIVER_LICENSE "GPL"
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
#define USB_VENDOR_ID_HANVON 0x0b57
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#define USB_PRODUCT_ID_AM0806 0x8502
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#define USB_PRODUCT_ID_AM1107 0x8505
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#define USB_PRODUCT_ID_AM1209 0x8501
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#define USB_PRODUCT_ID_RL0604 0x851f
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#define USB_AM_PACKET_LEN 10
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/* reported on all AMs */
static int lbuttons[] = {BTN_0, BTN_1, BTN_2, BTN_3};
/* reported on AM1107+ */
static int rbuttons[] = {BTN_4, BTN_5, BTN_6, BTN_7};
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#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
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struct hanvon {
unsigned char *data;
dma_addr_t data_dma;
struct input_dev *dev;
struct usb_device *usbdev;
struct urb *irq;
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int old_wheel_pos;
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char phys[32];
};
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static void report_buttons(struct hanvon *hanvon,
int buttons[], unsigned char dta)
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{
struct input_dev *dev = hanvon->dev;
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if ((dta & 0xf0) == 0xa0) {
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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 {
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if (dta <= 0x3f) { /* slider area active */
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int diff = dta - hanvon->old_wheel_pos;
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/* detect new/continue old move */
if (abs(diff) < AM_WHEEL_THRESHOLD)
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input_report_rel(dev, REL_WHEEL, diff);
hanvon->old_wheel_pos = dta;
}
}
}
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static void hanvon_irq(struct urb *urb)
{
struct hanvon *hanvon = urb->context;
unsigned char *data = hanvon->data;
struct input_dev *dev = hanvon->dev;
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int ret;
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switch (urb->status) {
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case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d",
__func__, urb->status);
return;
default:
dbg("%s - nonzero urb status received: %d",
__func__, urb->status);
goto exit;
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}
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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]);
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break;
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case 0x02: /* position change */
if ((data[1] & 0xf0) != 0) {
input_report_abs(dev, ABS_X,
be16_to_cpup((__be16 *)&data[2]));
input_report_abs(dev, ABS_Y,
be16_to_cpup((__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,
be16_to_cpup((__be16 *)&data[6])>>6);
}
input_report_key(dev, BTN_LEFT, data[1] & 0x1);
/* stylus button pressed (right click) */
input_report_key(dev, BTN_RIGHT, data[1] & 0x2);
input_report_key(dev, lbuttons[0], data[1] & 0x20);
break;
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}
input_sync(dev);
exit:
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ret = usb_submit_urb(urb, GFP_ATOMIC);
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if (ret)
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err("%s - usb_submit_urb failed with result %d",
__func__, ret);
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}
static struct usb_device_id hanvon_ids[] = {
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM1209) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM1107) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM0806) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_RL0604) },
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{ }
};
MODULE_DEVICE_TABLE(usb, hanvon_ids);
static int hanvon_open(struct input_dev *dev)
{
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int ret = 0;
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struct hanvon *hanvon = input_get_drvdata(dev);
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hanvon->old_wheel_pos = -AM_WHEEL_THRESHOLD-1;
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hanvon->irq->dev = hanvon->usbdev;
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if (usb_submit_urb(hanvon->irq, GFP_KERNEL))
ret = -EIO;
return ret;
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}
static void hanvon_close(struct input_dev *dev)
{
struct hanvon *hanvon = input_get_drvdata(dev);
usb_kill_urb(hanvon->irq);
}
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static int hanvon_probe(struct usb_interface *intf,
const struct usb_device_id *id)
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{
struct usb_device *dev = interface_to_usbdev(intf);
struct usb_endpoint_descriptor *endpoint;
struct hanvon *hanvon;
struct input_dev *input_dev;
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int error = -ENOMEM, i;
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hanvon = kzalloc(sizeof(struct hanvon), GFP_KERNEL);
input_dev = input_allocate_device();
if (!hanvon || !input_dev)
goto fail1;
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hanvon->data = usb_alloc_coherent(dev,
USB_AM_PACKET_LEN, GFP_KERNEL, &hanvon->data_dma);
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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));
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input_dev->name = "Hanvon Artmaster I tablet";
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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;
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__set_bit(EV_KEY, input_dev->evbit);
__set_bit(EV_ABS, input_dev->evbit);
__set_bit(EV_REL, input_dev->evbit);
__set_bit(BTN_TOOL_PEN, input_dev->keybit);
__set_bit(BTN_TOUCH, input_dev->keybit);
__set_bit(BTN_LEFT, input_dev->keybit);
__set_bit(BTN_RIGHT, input_dev->keybit);
for (i = 0; i < sizeof(lbuttons) / sizeof(lbuttons[0]); i++)
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__set_bit(lbuttons[i], input_dev->keybit);
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for (i = 0; i < sizeof(rbuttons) / sizeof(rbuttons[0]); i++)
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__set_bit(rbuttons[i], input_dev->keybit);
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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);
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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);
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endpoint = &intf->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(hanvon->irq, dev,
usb_rcvintpipe(dev, endpoint->bEndpointAddress),
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hanvon->data, USB_AM_PACKET_LEN,
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hanvon_irq, hanvon, endpoint->bInterval);
hanvon->irq->transfer_dma = hanvon->data_dma;
hanvon->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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usb_set_intfdata(intf, hanvon);
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error = input_register_device(hanvon->dev);
if (error)
goto fail3;
return 0;
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fail3: usb_free_urb(hanvon->irq);
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fail2: usb_free_coherent(dev, USB_AM_PACKET_LEN,
hanvon->data, hanvon->data_dma);
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fail1: input_free_device(input_dev);
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kfree(hanvon);
return error;
}
static void hanvon_disconnect(struct usb_interface *intf)
{
struct hanvon *hanvon = usb_get_intfdata(intf);
input_unregister_device(hanvon->dev);
usb_free_urb(hanvon->irq);
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usb_free_coherent(interface_to_usbdev(intf),
USB_AM_PACKET_LEN, hanvon->data, hanvon->data_dma);
kfree(hanvon);
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usb_set_intfdata(intf, NULL);
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}
static struct usb_driver hanvon_driver = {
.name = "hanvon",
.probe = hanvon_probe,
.disconnect = hanvon_disconnect,
.id_table = hanvon_ids,
};
static int __init hanvon_init(void)
{
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printk(DRIVER_DESC " " DRIVER_VERSION "\n");
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return usb_register(&hanvon_driver);
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}
static void __exit hanvon_exit(void)
{
usb_deregister(&hanvon_driver);
}
module_init(hanvon_init);
module_exit(hanvon_exit);