1 #include <linux/kernel.h>
2 #include <linux/slab.h>
3 #include <linux/input.h>
4 #include <linux/module.h>
5 #include <linux/init.h>
11 #define DRIVER_VERSION "v0.0.1"
12 #define DRIVER_AUTHOR "Josh Myer <josh@joshisanerd.com>"
13 #define DRIVER_DESC "KB Gear Jam Studio Tablet Driver"
15 MODULE_AUTHOR( DRIVER_AUTHOR );
16 MODULE_DESCRIPTION( DRIVER_DESC );
17 MODULE_LICENSE("GPL");
19 #define USB_VENDOR_ID_KBTAB 0x84e
21 static int kb_pressure_click = 0x10;
22 MODULE_PARM (kb_pressure_click,"i");
23 MODULE_PARM_DESC(kb_pressure_click,
24 "pressure threshold for clicks");
29 struct usb_device *usbdev;
37 static void kbtab_irq(struct urb *urb)
40 struct kbtab *tab = urb->context;
41 unsigned char *data = tab->data;
42 struct input_dev *dev = &tab->dev;
47 tab->x = (data[2] << 8) + data[1];
48 tab->y = (data[4] << 8) + data[3];
50 tab->pressure = (data[5]);
52 /* XXX: don't report unless actual change */
54 input_report_abs(dev, ABS_X, tab->x);
55 input_report_abs(dev, ABS_Y, tab->y);
56 input_report_abs(dev, ABS_PRESSURE, tab->pressure);
58 input_report_key(dev, BTN_STYLUS, (data[0] & 2));
59 input_report_key(dev, BTN_TOUCH, (data[0] & 1));
60 input_report_key(dev, BTN_LEFT, (tab->pressure > kb_pressure_click) ? 1 : 0);
62 input_event(dev, EV_MSC, MSC_SERIAL, 0);
65 struct usb_device_id kbtab_ids[] = {
66 { USB_DEVICE(USB_VENDOR_ID_KBTAB, 0x1001), driver_info : 0 },
70 MODULE_DEVICE_TABLE(usb, kbtab_ids);
72 static int kbtab_open(struct input_dev *dev)
74 struct kbtab *kbtab = dev->private;
79 kbtab->irq.dev = kbtab->usbdev;
80 if(usb_submit_urb(&kbtab->irq))
86 static void kbtab_close(struct input_dev *dev)
88 struct kbtab *kbtab = dev->private;
91 usb_unlink_urb(&kbtab->irq);
94 static void *kbtab_probe(struct usb_device *dev, unsigned int ifnum, const struct usb_device_id *id)
96 struct usb_endpoint_descriptor *endpoint;
99 if(!(kbtab = kmalloc(sizeof(struct kbtab), GFP_KERNEL)))
102 memset(kbtab, 0, sizeof(struct kbtab));
104 kbtab->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_MSC);
105 kbtab->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
107 kbtab->dev.keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
108 kbtab->dev.keybit[LONG(BTN_DIGI)] |= BIT(BTN_STYLUS);
110 kbtab->dev.mscbit[0] |= BIT(MSC_SERIAL);
112 kbtab->dev.absmax[ABS_X] = 0x2000;
113 kbtab->dev.absmax[ABS_Y] = 0x1750;
115 kbtab->dev.absmax[ABS_PRESSURE] = 0xff;
117 kbtab->dev.absfuzz[ABS_X] = 4;
118 kbtab->dev.absfuzz[ABS_Y] = 4;
120 kbtab->dev.private = kbtab;
122 kbtab->dev.open = kbtab_open;
123 kbtab->dev.close = kbtab_close;
125 kbtab->dev.name = "KB Gear Tablet";
126 kbtab->dev.idbus = BUS_USB;
128 kbtab->dev.idvendor = dev->descriptor.idVendor;
129 kbtab->dev.idproduct = dev->descriptor.idProduct;
130 kbtab->dev.idversion = dev->descriptor.bcdDevice;
134 endpoint = dev->config[0].interface[ifnum].altsetting[0].endpoint + 0;
136 usb_set_idle(dev, dev->config[0].interface[ifnum].altsetting[0].bInterfaceNumber, 0, 0);
138 FILL_INT_URB(&kbtab->irq, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress),
139 kbtab->data, 8, kbtab_irq, kbtab, endpoint->bInterval);
141 input_register_device(&kbtab->dev);
143 printk(KERN_INFO "input%d: KB Gear Tablet on usb%d:%d.%d\n",
144 kbtab->dev.number, dev->bus->busnum, dev->devnum, ifnum);
150 static void kbtab_disconnect(struct usb_device *dev, void *ptr)
152 struct kbtab *kbtab = ptr;
153 usb_unlink_urb(&kbtab->irq);
154 input_unregister_device(&kbtab->dev);
158 static struct usb_driver kbtab_driver = {
161 disconnect: kbtab_disconnect,
165 static int __init kbtab_init(void)
167 usb_register(&kbtab_driver);
168 info(DRIVER_VERSION " " DRIVER_AUTHOR);
173 static void __exit kbtab_exit(void)
175 usb_deregister(&kbtab_driver);
178 module_init(kbtab_init);
179 module_exit(kbtab_exit);