[PATCH] aic7xxx_osm build fix
[cris-mirror.git] / drivers / usb / input / kbtab.c
bloba68c5b4e7b3756f6820d180b5f07d65bd1ec52e6
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>
6 #include <linux/usb.h>
7 #include <asm/unaligned.h>
8 #include <asm/byteorder.h>
11 * Version Information
12 * v0.0.1 - Original, extremely basic version, 2.4.xx only
13 * v0.0.2 - Updated, works with 2.5.62 and 2.4.20;
14 * - added pressure-threshold modules param code from
15 * Alex Perry <alex.perry@ieee.org>
18 #define DRIVER_VERSION "v0.0.2"
19 #define DRIVER_AUTHOR "Josh Myer <josh@joshisanerd.com>"
20 #define DRIVER_DESC "USB KB Gear JamStudio Tablet driver"
21 #define DRIVER_LICENSE "GPL"
23 MODULE_AUTHOR(DRIVER_AUTHOR);
24 MODULE_DESCRIPTION(DRIVER_DESC);
25 MODULE_LICENSE(DRIVER_LICENSE);
27 #define USB_VENDOR_ID_KBGEAR 0x084e
29 static int kb_pressure_click = 0x10;
30 module_param(kb_pressure_click, int, 0);
31 MODULE_PARM_DESC(kb_pressure_click, "pressure threshold for clicks");
33 struct kbtab {
34 signed char *data;
35 dma_addr_t data_dma;
36 struct input_dev dev;
37 struct usb_device *usbdev;
38 struct urb *irq;
39 int open;
40 int x, y;
41 int button;
42 int pressure;
43 __u32 serial[2];
44 char phys[32];
47 static void kbtab_irq(struct urb *urb, struct pt_regs *regs)
49 struct kbtab *kbtab = urb->context;
50 unsigned char *data = kbtab->data;
51 struct input_dev *dev = &kbtab->dev;
52 int retval;
54 switch (urb->status) {
55 case 0:
56 /* success */
57 break;
58 case -ECONNRESET:
59 case -ENOENT:
60 case -ESHUTDOWN:
61 /* this urb is terminated, clean up */
62 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
63 return;
64 default:
65 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
66 goto exit;
69 kbtab->x = le16_to_cpu(get_unaligned((__le16 *) &data[1]));
70 kbtab->y = le16_to_cpu(get_unaligned((__le16 *) &data[3]));
72 kbtab->pressure = (data[5]);
74 input_report_key(dev, BTN_TOOL_PEN, 1);
76 input_report_abs(dev, ABS_X, kbtab->x);
77 input_report_abs(dev, ABS_Y, kbtab->y);
79 /*input_report_key(dev, BTN_TOUCH , data[0] & 0x01);*/
80 input_report_key(dev, BTN_RIGHT, data[0] & 0x02);
82 if( -1 == kb_pressure_click){
83 input_report_abs(dev, ABS_PRESSURE, kbtab->pressure);
84 } else {
85 input_report_key(dev, BTN_LEFT, (kbtab->pressure > kb_pressure_click) ? 1 : 0);
88 input_sync(dev);
90 exit:
91 retval = usb_submit_urb (urb, GFP_ATOMIC);
92 if (retval)
93 err ("%s - usb_submit_urb failed with result %d",
94 __FUNCTION__, retval);
97 static struct usb_device_id kbtab_ids[] = {
98 { USB_DEVICE(USB_VENDOR_ID_KBGEAR, 0x1001), .driver_info = 0 },
99 { }
102 MODULE_DEVICE_TABLE(usb, kbtab_ids);
104 static int kbtab_open(struct input_dev *dev)
106 struct kbtab *kbtab = dev->private;
108 if (kbtab->open++)
109 return 0;
111 kbtab->irq->dev = kbtab->usbdev;
112 if (usb_submit_urb(kbtab->irq, GFP_KERNEL)) {
113 kbtab->open--;
114 return -EIO;
117 return 0;
120 static void kbtab_close(struct input_dev *dev)
122 struct kbtab *kbtab = dev->private;
124 if (!--kbtab->open)
125 usb_kill_urb(kbtab->irq);
128 static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *id)
130 struct usb_device *dev = interface_to_usbdev(intf);
131 struct usb_endpoint_descriptor *endpoint;
132 struct kbtab *kbtab;
133 char path[64];
135 if (!(kbtab = kmalloc(sizeof(struct kbtab), GFP_KERNEL)))
136 return -ENOMEM;
137 memset(kbtab, 0, sizeof(struct kbtab));
139 kbtab->data = usb_buffer_alloc(dev, 8, GFP_KERNEL, &kbtab->data_dma);
140 if (!kbtab->data) {
141 kfree(kbtab);
142 return -ENOMEM;
145 kbtab->irq = usb_alloc_urb(0, GFP_KERNEL);
146 if (!kbtab->irq) {
147 usb_buffer_free(dev, 10, kbtab->data, kbtab->data_dma);
148 kfree(kbtab);
149 return -ENOMEM;
152 kbtab->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_MSC);
153 kbtab->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
155 kbtab->dev.keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
157 kbtab->dev.keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOUCH);
159 kbtab->dev.mscbit[0] |= BIT(MSC_SERIAL);
161 kbtab->dev.absmax[ABS_X] = 0x2000;
162 kbtab->dev.absmax[ABS_Y] = 0x1750;
163 kbtab->dev.absmax[ABS_PRESSURE] = 0xff;
165 kbtab->dev.absfuzz[ABS_X] = 4;
166 kbtab->dev.absfuzz[ABS_Y] = 4;
168 kbtab->dev.private = kbtab;
169 kbtab->dev.open = kbtab_open;
170 kbtab->dev.close = kbtab_close;
172 usb_make_path(dev, path, 64);
173 sprintf(kbtab->phys, "%s/input0", path);
175 kbtab->dev.name = "KB Gear Tablet";
176 kbtab->dev.phys = kbtab->phys;
177 kbtab->dev.id.bustype = BUS_USB;
178 kbtab->dev.id.vendor = le16_to_cpu(dev->descriptor.idVendor);
179 kbtab->dev.id.product = le16_to_cpu(dev->descriptor.idProduct);
180 kbtab->dev.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
181 kbtab->dev.dev = &intf->dev;
182 kbtab->usbdev = dev;
184 endpoint = &intf->cur_altsetting->endpoint[0].desc;
186 usb_fill_int_urb(kbtab->irq, dev,
187 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
188 kbtab->data, 8,
189 kbtab_irq, kbtab, endpoint->bInterval);
190 kbtab->irq->transfer_dma = kbtab->data_dma;
191 kbtab->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
193 input_register_device(&kbtab->dev);
195 printk(KERN_INFO "input: KB Gear Tablet on %s\n", path);
197 usb_set_intfdata(intf, kbtab);
199 return 0;
202 static void kbtab_disconnect(struct usb_interface *intf)
204 struct kbtab *kbtab = usb_get_intfdata (intf);
206 usb_set_intfdata(intf, NULL);
207 if (kbtab) {
208 usb_kill_urb(kbtab->irq);
209 input_unregister_device(&kbtab->dev);
210 usb_free_urb(kbtab->irq);
211 usb_buffer_free(interface_to_usbdev(intf), 10, kbtab->data, kbtab->data_dma);
212 kfree(kbtab);
216 static struct usb_driver kbtab_driver = {
217 .owner = THIS_MODULE,
218 .name = "kbtab",
219 .probe = kbtab_probe,
220 .disconnect = kbtab_disconnect,
221 .id_table = kbtab_ids,
224 static int __init kbtab_init(void)
226 int retval;
227 retval = usb_register(&kbtab_driver);
228 if (retval)
229 goto out;
230 info(DRIVER_VERSION ":" DRIVER_DESC);
231 out:
232 return retval;
235 static void __exit kbtab_exit(void)
237 usb_deregister(&kbtab_driver);
240 module_init(kbtab_init);
241 module_exit(kbtab_exit);