Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * touchkitusb.c -- Driver for eGalax TouchKit USB Touchscreens |
| 3 | * |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 4 | * Copyright (C) 2004-2005 by Daniel Ritz <daniel.ritz@gmx.ch> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Copyright (C) by Todd E. Johnson (mtouchusb.c) |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 of the |
| 10 | * License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | * |
| 21 | * Based upon mtouchusb.c |
| 22 | * |
| 23 | *****************************************************************************/ |
| 24 | |
| 25 | //#define DEBUG |
| 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/kernel.h> |
| 28 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/module.h> |
| 30 | #include <linux/init.h> |
David Brownell | ae0dadc | 2006-06-13 10:04:34 -0700 | [diff] [blame] | 31 | #include <linux/usb/input.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
| 33 | #define TOUCHKIT_MIN_XC 0x0 |
| 34 | #define TOUCHKIT_MAX_XC 0x07ff |
| 35 | #define TOUCHKIT_XC_FUZZ 0x0 |
| 36 | #define TOUCHKIT_XC_FLAT 0x0 |
| 37 | #define TOUCHKIT_MIN_YC 0x0 |
| 38 | #define TOUCHKIT_MAX_YC 0x07ff |
| 39 | #define TOUCHKIT_YC_FUZZ 0x0 |
| 40 | #define TOUCHKIT_YC_FLAT 0x0 |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 41 | #define TOUCHKIT_REPORT_DATA_SIZE 16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | #define TOUCHKIT_DOWN 0x01 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 45 | #define TOUCHKIT_PKT_TYPE_MASK 0xFE |
| 46 | #define TOUCHKIT_PKT_TYPE_REPT 0x80 |
| 47 | #define TOUCHKIT_PKT_TYPE_DIAG 0x0A |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | #define DRIVER_VERSION "v0.1" |
| 50 | #define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>" |
| 51 | #define DRIVER_DESC "eGalax TouchKit USB HID Touchscreen Driver" |
| 52 | |
| 53 | static int swap_xy; |
| 54 | module_param(swap_xy, bool, 0644); |
| 55 | MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped."); |
| 56 | |
| 57 | struct touchkit_usb { |
| 58 | unsigned char *data; |
| 59 | dma_addr_t data_dma; |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 60 | char buffer[TOUCHKIT_REPORT_DATA_SIZE]; |
| 61 | int buf_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | struct urb *irq; |
| 63 | struct usb_device *udev; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 64 | struct input_dev *input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | char name[128]; |
| 66 | char phys[64]; |
| 67 | }; |
| 68 | |
| 69 | static struct usb_device_id touchkit_devices[] = { |
| 70 | {USB_DEVICE(0x3823, 0x0001)}, |
Daniel Ritz | 3f8c03e | 2005-09-28 21:30:12 +0200 | [diff] [blame] | 71 | {USB_DEVICE(0x0123, 0x0001)}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | {USB_DEVICE(0x0eef, 0x0001)}, |
Daniel Ritz | 3f8c03e | 2005-09-28 21:30:12 +0200 | [diff] [blame] | 73 | {USB_DEVICE(0x0eef, 0x0002)}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | {} |
| 75 | }; |
| 76 | |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 77 | /* helpers to read the data */ |
| 78 | static inline int touchkit_get_touched(char *data) |
| 79 | { |
| 80 | return (data[0] & TOUCHKIT_DOWN) ? 1 : 0; |
| 81 | } |
| 82 | |
| 83 | static inline int touchkit_get_x(char *data) |
| 84 | { |
| 85 | return ((data[3] & 0x0F) << 7) | (data[4] & 0x7F); |
| 86 | } |
| 87 | |
| 88 | static inline int touchkit_get_y(char *data) |
| 89 | { |
| 90 | return ((data[1] & 0x0F) << 7) | (data[2] & 0x7F); |
| 91 | } |
| 92 | |
| 93 | |
| 94 | /* processes one input packet. */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame^] | 95 | static void touchkit_process_pkt(struct touchkit_usb *touchkit, char *pkt) |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 96 | { |
| 97 | int x, y; |
| 98 | |
| 99 | /* only process report packets */ |
| 100 | if ((pkt[0] & TOUCHKIT_PKT_TYPE_MASK) != TOUCHKIT_PKT_TYPE_REPT) |
| 101 | return; |
| 102 | |
| 103 | if (swap_xy) { |
| 104 | y = touchkit_get_x(pkt); |
| 105 | x = touchkit_get_y(pkt); |
| 106 | } else { |
| 107 | x = touchkit_get_x(pkt); |
| 108 | y = touchkit_get_y(pkt); |
| 109 | } |
| 110 | |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 111 | input_report_key(touchkit->input, BTN_TOUCH, touchkit_get_touched(pkt)); |
| 112 | input_report_abs(touchkit->input, ABS_X, x); |
| 113 | input_report_abs(touchkit->input, ABS_Y, y); |
| 114 | input_sync(touchkit->input); |
| 115 | } |
| 116 | |
| 117 | |
| 118 | static int touchkit_get_pkt_len(char *buf) |
| 119 | { |
| 120 | switch (buf[0] & TOUCHKIT_PKT_TYPE_MASK) { |
| 121 | case TOUCHKIT_PKT_TYPE_REPT: |
| 122 | return 5; |
| 123 | |
| 124 | case TOUCHKIT_PKT_TYPE_DIAG: |
| 125 | return buf[1] + 2; |
| 126 | } |
| 127 | |
| 128 | return 0; |
| 129 | } |
| 130 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame^] | 131 | static void touchkit_process(struct touchkit_usb *touchkit, int len) |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 132 | { |
| 133 | char *buffer; |
| 134 | int pkt_len, buf_len, pos; |
| 135 | |
| 136 | /* if the buffer contains data, append */ |
| 137 | if (unlikely(touchkit->buf_len)) { |
| 138 | int tmp; |
| 139 | |
| 140 | /* if only 1 byte in buffer, add another one to get length */ |
| 141 | if (touchkit->buf_len == 1) |
| 142 | touchkit->buffer[1] = touchkit->data[0]; |
| 143 | |
| 144 | pkt_len = touchkit_get_pkt_len(touchkit->buffer); |
| 145 | |
| 146 | /* unknown packet: drop everything */ |
| 147 | if (!pkt_len) |
| 148 | return; |
| 149 | |
| 150 | /* append, process */ |
| 151 | tmp = pkt_len - touchkit->buf_len; |
| 152 | memcpy(touchkit->buffer + touchkit->buf_len, touchkit->data, tmp); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame^] | 153 | touchkit_process_pkt(touchkit, touchkit->buffer); |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 154 | |
| 155 | buffer = touchkit->data + tmp; |
| 156 | buf_len = len - tmp; |
| 157 | } else { |
| 158 | buffer = touchkit->data; |
| 159 | buf_len = len; |
| 160 | } |
| 161 | |
| 162 | /* only one byte left in buffer */ |
| 163 | if (unlikely(buf_len == 1)) { |
| 164 | touchkit->buffer[0] = buffer[0]; |
| 165 | touchkit->buf_len = 1; |
| 166 | return; |
| 167 | } |
| 168 | |
| 169 | /* loop over the buffer */ |
| 170 | pos = 0; |
| 171 | while (pos < buf_len) { |
| 172 | /* get packet len */ |
| 173 | pkt_len = touchkit_get_pkt_len(buffer + pos); |
| 174 | |
| 175 | /* unknown packet: drop everything */ |
| 176 | if (unlikely(!pkt_len)) |
| 177 | return; |
| 178 | |
| 179 | /* full packet: process */ |
| 180 | if (likely(pkt_len <= buf_len)) { |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame^] | 181 | touchkit_process_pkt(touchkit, buffer + pos); |
Daniel Ritz | 5d32029 | 2005-11-27 22:23:38 +0100 | [diff] [blame] | 182 | } else { |
| 183 | /* incomplete packet: save in buffer */ |
| 184 | memcpy(touchkit->buffer, buffer + pos, buf_len - pos); |
| 185 | touchkit->buf_len = buf_len - pos; |
| 186 | } |
| 187 | pos += pkt_len; |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame^] | 192 | static void touchkit_irq(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | { |
| 194 | struct touchkit_usb *touchkit = urb->context; |
| 195 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
| 197 | switch (urb->status) { |
| 198 | case 0: |
| 199 | /* success */ |
| 200 | break; |
Pete Zaitcev | 38e2bfc | 2006-09-18 22:49:02 -0700 | [diff] [blame] | 201 | case -ETIME: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | /* this urb is timing out */ |
| 203 | dbg("%s - urb timed out - was the device unplugged?", |
| 204 | __FUNCTION__); |
| 205 | return; |
| 206 | case -ECONNRESET: |
| 207 | case -ENOENT: |
| 208 | case -ESHUTDOWN: |
| 209 | /* this urb is terminated, clean up */ |
| 210 | dbg("%s - urb shutting down with status: %d", |
| 211 | __FUNCTION__, urb->status); |
| 212 | return; |
| 213 | default: |
| 214 | dbg("%s - nonzero urb status received: %d", |
| 215 | __FUNCTION__, urb->status); |
| 216 | goto exit; |
| 217 | } |
| 218 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame^] | 219 | touchkit_process(touchkit, urb->actual_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
| 221 | exit: |
| 222 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
| 223 | if (retval) |
| 224 | err("%s - usb_submit_urb failed with result: %d", |
| 225 | __FUNCTION__, retval); |
| 226 | } |
| 227 | |
| 228 | static int touchkit_open(struct input_dev *input) |
| 229 | { |
| 230 | struct touchkit_usb *touchkit = input->private; |
| 231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | touchkit->irq->dev = touchkit->udev; |
| 233 | |
Dmitry Torokhov | 65cde54 | 2005-05-29 02:29:38 -0500 | [diff] [blame] | 234 | if (usb_submit_urb(touchkit->irq, GFP_ATOMIC)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
| 237 | return 0; |
| 238 | } |
| 239 | |
| 240 | static void touchkit_close(struct input_dev *input) |
| 241 | { |
| 242 | struct touchkit_usb *touchkit = input->private; |
| 243 | |
Dmitry Torokhov | 65cde54 | 2005-05-29 02:29:38 -0500 | [diff] [blame] | 244 | usb_kill_urb(touchkit->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | static int touchkit_alloc_buffers(struct usb_device *udev, |
| 248 | struct touchkit_usb *touchkit) |
| 249 | { |
| 250 | touchkit->data = usb_buffer_alloc(udev, TOUCHKIT_REPORT_DATA_SIZE, |
| 251 | SLAB_ATOMIC, &touchkit->data_dma); |
| 252 | |
| 253 | if (!touchkit->data) |
| 254 | return -1; |
| 255 | |
| 256 | return 0; |
| 257 | } |
| 258 | |
| 259 | static void touchkit_free_buffers(struct usb_device *udev, |
| 260 | struct touchkit_usb *touchkit) |
| 261 | { |
| 262 | if (touchkit->data) |
| 263 | usb_buffer_free(udev, TOUCHKIT_REPORT_DATA_SIZE, |
| 264 | touchkit->data, touchkit->data_dma); |
| 265 | } |
| 266 | |
| 267 | static int touchkit_probe(struct usb_interface *intf, |
| 268 | const struct usb_device_id *id) |
| 269 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | struct touchkit_usb *touchkit; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 271 | struct input_dev *input_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | struct usb_host_interface *interface; |
| 273 | struct usb_endpoint_descriptor *endpoint; |
| 274 | struct usb_device *udev = interface_to_usbdev(intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | |
| 276 | interface = intf->cur_altsetting; |
| 277 | endpoint = &interface->endpoint[0].desc; |
| 278 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 279 | touchkit = kzalloc(sizeof(struct touchkit_usb), GFP_KERNEL); |
| 280 | input_dev = input_allocate_device(); |
| 281 | if (!touchkit || !input_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | goto out_free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 284 | if (touchkit_alloc_buffers(udev, touchkit)) |
| 285 | goto out_free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
| 287 | touchkit->irq = usb_alloc_urb(0, GFP_KERNEL); |
| 288 | if (!touchkit->irq) { |
| 289 | dbg("%s - usb_alloc_urb failed: touchkit->irq", __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | goto out_free_buffers; |
| 291 | } |
| 292 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 293 | touchkit->udev = udev; |
| 294 | touchkit->input = input_dev; |
| 295 | |
| 296 | if (udev->manufacturer) |
| 297 | strlcpy(touchkit->name, udev->manufacturer, sizeof(touchkit->name)); |
| 298 | |
| 299 | if (udev->product) { |
| 300 | if (udev->manufacturer) |
| 301 | strlcat(touchkit->name, " ", sizeof(touchkit->name)); |
| 302 | strlcat(touchkit->name, udev->product, sizeof(touchkit->name)); |
| 303 | } |
| 304 | |
| 305 | if (!strlen(touchkit->name)) |
| 306 | snprintf(touchkit->name, sizeof(touchkit->name), |
| 307 | "USB Touchscreen %04x:%04x", |
| 308 | le16_to_cpu(udev->descriptor.idVendor), |
| 309 | le16_to_cpu(udev->descriptor.idProduct)); |
| 310 | |
| 311 | usb_make_path(udev, touchkit->phys, sizeof(touchkit->phys)); |
| 312 | strlcpy(touchkit->phys, "/input0", sizeof(touchkit->phys)); |
| 313 | |
| 314 | input_dev->name = touchkit->name; |
| 315 | input_dev->phys = touchkit->phys; |
| 316 | usb_to_input_id(udev, &input_dev->id); |
| 317 | input_dev->cdev.dev = &intf->dev; |
| 318 | input_dev->private = touchkit; |
| 319 | input_dev->open = touchkit_open; |
| 320 | input_dev->close = touchkit_close; |
| 321 | |
| 322 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); |
| 323 | input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH); |
| 324 | input_set_abs_params(input_dev, ABS_X, TOUCHKIT_MIN_XC, TOUCHKIT_MAX_XC, |
| 325 | TOUCHKIT_XC_FUZZ, TOUCHKIT_XC_FLAT); |
| 326 | input_set_abs_params(input_dev, ABS_Y, TOUCHKIT_MIN_YC, TOUCHKIT_MAX_YC, |
| 327 | TOUCHKIT_YC_FUZZ, TOUCHKIT_YC_FLAT); |
| 328 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | usb_fill_int_urb(touchkit->irq, touchkit->udev, |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 330 | usb_rcvintpipe(touchkit->udev, 0x81), |
| 331 | touchkit->data, TOUCHKIT_REPORT_DATA_SIZE, |
| 332 | touchkit_irq, touchkit, endpoint->bInterval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
Juergen Schindele | a001100 | 2006-01-09 08:51:48 +0100 | [diff] [blame] | 334 | touchkit->irq->transfer_dma = touchkit->data_dma; |
| 335 | touchkit->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 336 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 337 | input_register_device(touchkit->input); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | usb_set_intfdata(intf, touchkit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | return 0; |
| 341 | |
| 342 | out_free_buffers: |
| 343 | touchkit_free_buffers(udev, touchkit); |
| 344 | out_free: |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 345 | input_free_device(input_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | kfree(touchkit); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 347 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | static void touchkit_disconnect(struct usb_interface *intf) |
| 351 | { |
| 352 | struct touchkit_usb *touchkit = usb_get_intfdata(intf); |
| 353 | |
| 354 | dbg("%s - called", __FUNCTION__); |
| 355 | |
| 356 | if (!touchkit) |
| 357 | return; |
| 358 | |
| 359 | dbg("%s - touchkit is initialized, cleaning up", __FUNCTION__); |
| 360 | usb_set_intfdata(intf, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | usb_kill_urb(touchkit->irq); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 362 | input_unregister_device(touchkit->input); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | usb_free_urb(touchkit->irq); |
| 364 | touchkit_free_buffers(interface_to_usbdev(intf), touchkit); |
| 365 | kfree(touchkit); |
| 366 | } |
| 367 | |
| 368 | MODULE_DEVICE_TABLE(usb, touchkit_devices); |
| 369 | |
| 370 | static struct usb_driver touchkit_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | .name = "touchkitusb", |
| 372 | .probe = touchkit_probe, |
| 373 | .disconnect = touchkit_disconnect, |
| 374 | .id_table = touchkit_devices, |
| 375 | }; |
| 376 | |
| 377 | static int __init touchkit_init(void) |
| 378 | { |
| 379 | return usb_register(&touchkit_driver); |
| 380 | } |
| 381 | |
| 382 | static void __exit touchkit_cleanup(void) |
| 383 | { |
| 384 | usb_deregister(&touchkit_driver); |
| 385 | } |
| 386 | |
| 387 | module_init(touchkit_init); |
| 388 | module_exit(touchkit_cleanup); |
| 389 | |
| 390 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 391 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 392 | MODULE_LICENSE("GPL"); |