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/*
* Copyright (c) 2013 Tan Huang,Shenzhen Huion
*
* USB HID Tablet support
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb/input.h>
#include <linux/hid.h>
#include <asm/uaccess.h>
#include <linux/platform_device.h>
#include <linux/cdev.h>
#include <linux/miscdevice.h>
#define DEVICE_NAME "huiontablet"
/* for apple IDs */
#ifdef CONFIG_USB_HID_MODULE
#include "./hid-ids.h"
#endif
/*
* Version Information
*/
#define DRIVER_VERSION "v1.0"
#define DRIVER_AUTHOR "Tan Huang <tanhuang@huion.cn>"
#define DRIVER_DESC "USB HID Boot Protocol tablet driver"
#define DRIVER_LICENSE "GPL"
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
struct usb_mouse {
char name[128];
char phys[64];
struct usb_device *usbdev;
struct input_dev *dev;
struct urb *irq;
signed char *data;
dma_addr_t data_dma;
};
unsigned short int pos_x=0,pos_y=0,pos_z=0;
//static struct miscdevice misc = {
// .minor = MISC_DYNAMIC_MINOR,
// .name = DEVICE_NAME,
// .fops = &dev_fops,
//};
static void usb_mouse_irq(struct urb *urb)
{
struct usb_mouse *mouse = urb->context;
signed char *data = mouse->data;
struct input_dev *dev = mouse->dev;
int status;
//unsigned short int pos_x=0,pos_y=0,pos_z=0;
// printk(KERN_NOTICE "enter usb_mouse_irq function\n");
switch (urb->status) {
case 0: /* success */
break;
case -ECONNRESET: /* unlink */
case -ENOENT:
case -ESHUTDOWN:
return;
/* -EPIPE: should clear the halt */
default: /* error */
goto resubmit;
}
pos_x =(data[3] & 0x0FF)<<8;
pos_x |=(data[2] & 0x0FF);
pos_y =(data[5] & 0x0FF)<<8;
pos_y |=(data[4] & 0x0FF);
pos_z =(data[7] & 0x0FF)<<8;
pos_z |=(data[6] & 0x0FF);
printk(KERN_NOTICE "pos_x=%x,pos_y=%x,pos_z=%x,button=%x\n",pos_x,pos_y,pos_z,(data[1] & 0x0F));
input_report_abs(dev, ABS_X, pos_x);
input_report_abs(dev, ABS_Y, pos_y);
input_report_key(dev, BTN_TOOL_PEN,1);
input_report_abs(dev, ABS_PRESSURE,pos_z);
input_report_key(dev, BTN_LEFT,data[1] & 0x01);
input_report_key(dev, BTN_TOUCH,data[1] & 0x01);
input_report_key(dev, BTN_MIDDLE,data[1] & 0x02);
input_report_key(dev, BTN_RIGHT,data[1] & 0x04);
input_sync(dev);
resubmit:
status = usb_submit_urb (urb, GFP_ATOMIC);
/* Not sure what the function 'err' would have been, but holy shit this code is UGLY.
Do people really still use the goto statement?
if (status)
err ("can't resubmit intr, %s-%s/input0, status %d",
mouse->usbdev->bus->bus_name,
mouse->usbdev->devpath, status);
// printk(KERN_NOTICE "quit usb_mouse_irq function\n");
*/
}
static int usb_mouse_open(struct input_dev *dev)
{
struct usb_mouse *mouse = input_get_drvdata(dev);
// printk(KERN_NOTICE "enter usinput_report_key(dev, BTN_TOUCH,(pos_z>0)?1:0); b_mouse_open function\n");
mouse->irq->dev = mouse->usbdev;
if (usb_submit_urb(mouse->irq, GFP_KERNEL))
return -EIO;
// printk(KERN_NOTICE "quit usb_mouse_open function\n");
return 0;
}
static void usb_mouse_close(struct input_dev *dev)
{
struct usb_mouse *mouse = input_get_drvdata(dev);
// printk(KERN_NOTICE "enter usb_mouse_close function\n");
usb_kill_urb(mouse->irq);
// printk(KERN_NOTICE "quit usb_mouse_close function\n");
}
static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
struct usb_host_interface *interface;
struct usb_endpoint_descriptor *endpoint;
struct usb_mouse *mouse;
struct input_dev *input_dev;
int pipe, maxp;
int error = -ENOMEM;
// printk(KERN_NOTICE "enter usb_mouse_probe function\n");
interface = intf->cur_altsetting;
if (interface->desc.bNumEndpoints != 1)
return -ENODEV;
endpoint = &interface->endpoint[0].desc;
if (!usb_endpoint_is_int_in(endpoint))
return -ENODEV;
pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
input_dev = input_allocate_device();
if (!mouse || !input_dev)
goto fail1;
mouse->data = usb_alloc_coherent(dev, 8, GFP_ATOMIC, &mouse->data_dma);
if (!mouse->data)
goto fail1;
mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
if (!mouse->irq)
goto fail2;
mouse->usbdev = dev;
mouse->dev = input_dev;
if (dev->manufacturer)
strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name));
if (dev->product) {
if (dev->manufacturer)
strlcat(mouse->name, " ", sizeof(mouse->name));
strlcat(mouse->name, dev->product, sizeof(mouse->name));
}
if (!strlen(mouse->name))
snprintf(mouse->name, sizeof(mouse->name),
"USB HIDBP Mouse %04x:%04x",
le16_to_cpu(dev->descriptor.idVendor),
le16_to_cpu(dev->descriptor.idProduct));
usb_make_path(dev, mouse->phys, sizeof(mouse->phys));
strlcat(mouse->phys, "/input0", sizeof(mouse->phys));
input_dev->name = mouse->name;
input_dev->phys = mouse->phys;
usb_to_input_id(dev, &input_dev->id);
input_dev->dev.parent = &intf->dev;
set_bit(EV_MSC, input_dev->evbit);
set_bit(EV_KEY, input_dev->evbit);
set_bit(EV_ABS, input_dev->evbit);
set_bit(ABS_X, input_dev->absbit);
set_bit(ABS_Y, input_dev->absbit);
set_bit(ABS_PRESSURE, input_dev->absbit);
set_bit(BTN_TOUCH, input_dev->keybit);
set_bit(BTN_TOOL_PEN, input_dev->keybit);
set_bit(BTN_LEFT, input_dev->keybit);
set_bit(BTN_MIDDLE, input_dev->keybit);
set_bit(BTN_RIGHT, input_dev->keybit);
set_bit(MSC_SERIAL, input_dev->mscbit);
input_set_drvdata(input_dev, mouse);
input_set_abs_params(input_dev, ABS_X, 0, 0x7ff, 0, 0);
input_set_abs_params(input_dev, ABS_Y, 0, 0x7ff, 0, 0);
input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
input_dev->open = usb_mouse_open;
input_dev->close = usb_mouse_close;
usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
(maxp > 8 ? 8 : maxp),
usb_mouse_irq, mouse, endpoint->bInterval);
mouse->irq->transfer_dma = mouse->data_dma;
mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
error = input_register_device(mouse->dev);
if (error)
goto fail3;
usb_set_intfdata(intf, mouse);
return 0;
fail3:
usb_free_urb(mouse->irq);
fail2:
usb_free_coherent(dev, 8, mouse->data, mouse->data_dma);
fail1:
input_free_device(input_dev);
kfree(mouse);
// printk(KERN_NOTICE "quit usb_mouse_probe function\n");
return error;
}
static void usb_mouse_disconnect(struct usb_interface *intf)
{
struct usb_mouse *mouse = usb_get_intfdata (intf);
//printk(KERN_NOTICE "enter usb_mouse_disconnect function\n");
usb_set_intfdata(intf, NULL);
if (mouse) {
usb_kill_urb(mouse->irq);
input_unregister_device(mouse->dev);
usb_free_urb(mouse->irq);
usb_free_coherent(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);
kfree(mouse);
}
// misc_deregister(&misc);
// printk(KERN_NOTICE "quit usb_mouse_disconnect function\n");
}
static struct usb_device_id usb_mouse_id_table [] = {
//{ USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,USB_INTERFACE_PROTOCOL_MOUSE) },
{ USB_DEVICE(0x256C, 0x0005) },
{ USB_DEVICE(0x256C, 0x006E) },
{ USB_DEVICE(0x5543, 0x0005) },
{ USB_DEVICE(0x5543, 0x006E) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);
static struct usb_driver usb_mouse_driver = {
.name = "usbmouse",
.probe = usb_mouse_probe,
.disconnect = usb_mouse_disconnect,
.id_table = usb_mouse_id_table,
};
static int __init usb_mouse_init(void)
{
int retval = usb_register(&usb_mouse_driver);
if (retval == 0)
printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
DRIVER_DESC "\n");
return retval;
}
static void __exit usb_mouse_exit(void)
{
usb_deregister(&usb_mouse_driver);
}
module_init(usb_mouse_init);
module_exit(usb_mouse_exit);
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