Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Apple USB Touchpad (for post-February 2005 PowerBooks) driver |
| 3 | * |
| 4 | * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) |
| 5 | * Copyright (C) 2005 Johannes Berg (johannes@sipsolutions.net) |
| 6 | * Copyright (C) 2005 Stelian Pop (stelian@popies.net) |
| 7 | * Copyright (C) 2005 Frank Arnold (frank@scirocco-5v-turbo.de) |
| 8 | * Copyright (C) 2005 Peter Osterlund (petero2@telia.com) |
| 9 | * |
| 10 | * Thanks to Alex Harper <basilisk@foobox.net> for his inputs. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <linux/config.h> |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/errno.h> |
| 31 | #include <linux/init.h> |
| 32 | #include <linux/slab.h> |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/usb.h> |
| 35 | #include <linux/input.h> |
| 36 | #include <linux/usb_input.h> |
| 37 | |
| 38 | /* Apple has powerbooks which have the keyboard with different Product IDs */ |
| 39 | #define APPLE_VENDOR_ID 0x05AC |
| 40 | |
| 41 | #define ATP_DEVICE(prod) \ |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 42 | .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 43 | USB_DEVICE_ID_MATCH_INT_CLASS | \ |
| 44 | USB_DEVICE_ID_MATCH_INT_PROTOCOL, \ |
| 45 | .idVendor = APPLE_VENDOR_ID, \ |
| 46 | .idProduct = (prod), \ |
| 47 | .bInterfaceClass = 0x03, \ |
| 48 | .bInterfaceProtocol = 0x02 |
| 49 | |
| 50 | /* table of devices that work with this driver */ |
| 51 | static struct usb_device_id atp_table [] = { |
| 52 | { ATP_DEVICE(0x020E) }, |
| 53 | { ATP_DEVICE(0x020F) }, |
| 54 | { ATP_DEVICE(0x030A) }, |
| 55 | { ATP_DEVICE(0x030B) }, |
| 56 | { } /* Terminating entry */ |
| 57 | }; |
| 58 | MODULE_DEVICE_TABLE (usb, atp_table); |
| 59 | |
| 60 | /* size of a USB urb transfer */ |
| 61 | #define ATP_DATASIZE 81 |
| 62 | |
| 63 | /* |
| 64 | * number of sensors. Note that only 16 instead of 26 X (horizontal) |
| 65 | * sensors exist on 12" and 15" PowerBooks. All models have 16 Y |
| 66 | * (vertical) sensors. |
| 67 | */ |
| 68 | #define ATP_XSENSORS 26 |
| 69 | #define ATP_YSENSORS 16 |
| 70 | |
| 71 | /* amount of fuzz this touchpad generates */ |
| 72 | #define ATP_FUZZ 16 |
| 73 | |
| 74 | /* maximum pressure this driver will report */ |
| 75 | #define ATP_PRESSURE 300 |
| 76 | /* |
| 77 | * multiplication factor for the X and Y coordinates. |
| 78 | * We try to keep the touchpad aspect ratio while still doing only simple |
| 79 | * arithmetics. |
| 80 | * The factors below give coordinates like: |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 81 | * 0 <= x < 960 on 12" and 15" Powerbooks |
| 82 | * 0 <= x < 1600 on 17" Powerbooks |
| 83 | * 0 <= y < 646 |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 84 | */ |
| 85 | #define ATP_XFACT 64 |
| 86 | #define ATP_YFACT 43 |
| 87 | |
| 88 | /* |
| 89 | * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is |
| 90 | * ignored. |
| 91 | */ |
| 92 | #define ATP_THRESHOLD 5 |
| 93 | |
| 94 | /* Structure to hold all of our device specific stuff */ |
| 95 | struct atp { |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 96 | char phys[64]; |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 97 | struct usb_device * udev; /* usb device */ |
| 98 | struct urb * urb; /* usb request block */ |
| 99 | signed char * data; /* transferred data */ |
| 100 | int open; /* non-zero if opened */ |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 101 | struct input_dev *input; /* input dev */ |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 102 | int valid; /* are the sensors valid ? */ |
| 103 | int x_old; /* last reported x/y, */ |
| 104 | int y_old; /* used for smoothing */ |
| 105 | /* current value of the sensors */ |
| 106 | signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS]; |
| 107 | /* last value of the sensors */ |
| 108 | signed char xy_old[ATP_XSENSORS + ATP_YSENSORS]; |
| 109 | /* accumulated sensors */ |
| 110 | int xy_acc[ATP_XSENSORS + ATP_YSENSORS]; |
| 111 | }; |
| 112 | |
| 113 | #define dbg_dump(msg, tab) \ |
| 114 | if (debug > 1) { \ |
| 115 | int i; \ |
| 116 | printk("appletouch: %s %lld", msg, (long long)jiffies); \ |
| 117 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) \ |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 118 | printk(" %02x", tab[i]); \ |
| 119 | printk("\n"); \ |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 120 | } |
| 121 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 122 | #define dprintk(format, a...) \ |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 123 | do { \ |
| 124 | if (debug) printk(format, ##a); \ |
| 125 | } while (0) |
| 126 | |
| 127 | MODULE_AUTHOR("Johannes Berg, Stelian Pop, Frank Arnold"); |
| 128 | MODULE_DESCRIPTION("Apple PowerBooks USB touchpad driver"); |
| 129 | MODULE_LICENSE("GPL"); |
| 130 | |
| 131 | static int debug = 1; |
| 132 | module_param(debug, int, 0644); |
| 133 | MODULE_PARM_DESC(debug, "Activate debugging output"); |
| 134 | |
| 135 | static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, |
| 136 | int *z, int *fingers) |
| 137 | { |
| 138 | int i; |
| 139 | /* values to calculate mean */ |
| 140 | int pcum = 0, psum = 0; |
| 141 | |
| 142 | *fingers = 0; |
| 143 | |
| 144 | for (i = 0; i < nb_sensors; i++) { |
| 145 | if (xy_sensors[i] < ATP_THRESHOLD) |
| 146 | continue; |
| 147 | if ((i - 1 < 0) || (xy_sensors[i - 1] < ATP_THRESHOLD)) |
| 148 | (*fingers)++; |
| 149 | pcum += xy_sensors[i] * i; |
| 150 | psum += xy_sensors[i]; |
| 151 | } |
| 152 | |
| 153 | if (psum > 0) { |
| 154 | *z = psum; |
| 155 | return pcum * fact / psum; |
| 156 | } |
| 157 | |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | static inline void atp_report_fingers(struct input_dev *input, int fingers) |
| 162 | { |
| 163 | input_report_key(input, BTN_TOOL_FINGER, fingers == 1); |
| 164 | input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); |
| 165 | input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); |
| 166 | } |
| 167 | |
| 168 | static void atp_complete(struct urb* urb, struct pt_regs* regs) |
| 169 | { |
| 170 | int x, y, x_z, y_z, x_f, y_f; |
| 171 | int retval, i; |
| 172 | struct atp *dev = urb->context; |
| 173 | |
| 174 | switch (urb->status) { |
| 175 | case 0: |
| 176 | /* success */ |
| 177 | break; |
| 178 | case -ECONNRESET: |
| 179 | case -ENOENT: |
| 180 | case -ESHUTDOWN: |
| 181 | /* This urb is terminated, clean up */ |
| 182 | dbg("%s - urb shutting down with status: %d", |
| 183 | __FUNCTION__, urb->status); |
| 184 | return; |
| 185 | default: |
| 186 | dbg("%s - nonzero urb status received: %d", |
| 187 | __FUNCTION__, urb->status); |
| 188 | goto exit; |
| 189 | } |
| 190 | |
| 191 | /* drop incomplete datasets */ |
| 192 | if (dev->urb->actual_length != ATP_DATASIZE) { |
| 193 | dprintk("appletouch: incomplete data package.\n"); |
| 194 | goto exit; |
| 195 | } |
| 196 | |
| 197 | /* reorder the sensors values */ |
| 198 | for (i = 0; i < 8; i++) { |
| 199 | /* X values */ |
| 200 | dev->xy_cur[i ] = dev->data[5 * i + 2]; |
| 201 | dev->xy_cur[i + 8] = dev->data[5 * i + 4]; |
| 202 | dev->xy_cur[i + 16] = dev->data[5 * i + 42]; |
| 203 | if (i < 2) |
| 204 | dev->xy_cur[i + 24] = dev->data[5 * i + 44]; |
| 205 | |
| 206 | /* Y values */ |
| 207 | dev->xy_cur[i + 26] = dev->data[5 * i + 1]; |
| 208 | dev->xy_cur[i + 34] = dev->data[5 * i + 3]; |
| 209 | } |
| 210 | |
| 211 | dbg_dump("sample", dev->xy_cur); |
| 212 | |
| 213 | if (!dev->valid) { |
| 214 | /* first sample */ |
| 215 | dev->valid = 1; |
| 216 | dev->x_old = dev->y_old = -1; |
| 217 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); |
| 218 | |
| 219 | /* 17" Powerbooks have 10 extra X sensors */ |
| 220 | for (i = 16; i < ATP_XSENSORS; i++) |
| 221 | if (dev->xy_cur[i]) { |
| 222 | printk("appletouch: 17\" model detected.\n"); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 223 | input_set_abs_params(dev->input, ABS_X, 0, |
| 224 | (ATP_XSENSORS - 1) * |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 225 | ATP_XFACT - 1, |
| 226 | ATP_FUZZ, 0); |
| 227 | break; |
| 228 | } |
| 229 | |
| 230 | goto exit; |
| 231 | } |
| 232 | |
| 233 | for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { |
| 234 | /* accumulate the change */ |
| 235 | signed char change = dev->xy_old[i] - dev->xy_cur[i]; |
| 236 | dev->xy_acc[i] -= change; |
| 237 | |
| 238 | /* prevent down drifting */ |
| 239 | if (dev->xy_acc[i] < 0) |
| 240 | dev->xy_acc[i] = 0; |
| 241 | } |
| 242 | |
| 243 | memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); |
| 244 | |
| 245 | dbg_dump("accumulator", dev->xy_acc); |
| 246 | |
| 247 | x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, |
| 248 | ATP_XFACT, &x_z, &x_f); |
| 249 | y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, |
| 250 | ATP_YFACT, &y_z, &y_f); |
| 251 | |
| 252 | if (x && y) { |
| 253 | if (dev->x_old != -1) { |
| 254 | x = (dev->x_old * 3 + x) >> 2; |
| 255 | y = (dev->y_old * 3 + y) >> 2; |
| 256 | dev->x_old = x; |
| 257 | dev->y_old = y; |
| 258 | |
| 259 | if (debug > 1) |
| 260 | printk("appletouch: X: %3d Y: %3d " |
| 261 | "Xz: %3d Yz: %3d\n", |
| 262 | x, y, x_z, y_z); |
| 263 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 264 | input_report_key(dev->input, BTN_TOUCH, 1); |
| 265 | input_report_abs(dev->input, ABS_X, x); |
| 266 | input_report_abs(dev->input, ABS_Y, y); |
| 267 | input_report_abs(dev->input, ABS_PRESSURE, |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 268 | min(ATP_PRESSURE, x_z + y_z)); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 269 | atp_report_fingers(dev->input, max(x_f, y_f)); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 270 | } |
| 271 | dev->x_old = x; |
| 272 | dev->y_old = y; |
| 273 | } |
| 274 | else if (!x && !y) { |
| 275 | |
| 276 | dev->x_old = dev->y_old = -1; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 277 | input_report_key(dev->input, BTN_TOUCH, 0); |
| 278 | input_report_abs(dev->input, ABS_PRESSURE, 0); |
| 279 | atp_report_fingers(dev->input, 0); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 280 | |
| 281 | /* reset the accumulator on release */ |
| 282 | memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); |
| 283 | } |
| 284 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 285 | input_report_key(dev->input, BTN_LEFT, !!dev->data[80]); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 286 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 287 | input_sync(dev->input); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 288 | |
| 289 | exit: |
| 290 | retval = usb_submit_urb(dev->urb, GFP_ATOMIC); |
| 291 | if (retval) { |
| 292 | err("%s - usb_submit_urb failed with result %d", |
| 293 | __FUNCTION__, retval); |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | static int atp_open(struct input_dev *input) |
| 298 | { |
| 299 | struct atp *dev = input->private; |
| 300 | |
| 301 | if (usb_submit_urb(dev->urb, GFP_ATOMIC)) |
| 302 | return -EIO; |
| 303 | |
| 304 | dev->open = 1; |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | static void atp_close(struct input_dev *input) |
| 309 | { |
| 310 | struct atp *dev = input->private; |
| 311 | |
| 312 | usb_kill_urb(dev->urb); |
| 313 | dev->open = 0; |
| 314 | } |
| 315 | |
| 316 | static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id) |
| 317 | { |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 318 | struct atp *dev; |
| 319 | struct input_dev *input_dev; |
| 320 | struct usb_device *udev = interface_to_usbdev(iface); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 321 | struct usb_host_interface *iface_desc; |
| 322 | struct usb_endpoint_descriptor *endpoint; |
| 323 | int int_in_endpointAddr = 0; |
| 324 | int i, retval = -ENOMEM; |
| 325 | |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 326 | |
| 327 | /* set up the endpoint information */ |
| 328 | /* use only the first interrupt-in endpoint */ |
| 329 | iface_desc = iface->cur_altsetting; |
| 330 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { |
| 331 | endpoint = &iface_desc->endpoint[i].desc; |
| 332 | if (!int_in_endpointAddr && |
| 333 | (endpoint->bEndpointAddress & USB_DIR_IN) && |
| 334 | ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) |
| 335 | == USB_ENDPOINT_XFER_INT)) { |
| 336 | /* we found an interrupt in endpoint */ |
| 337 | int_in_endpointAddr = endpoint->bEndpointAddress; |
| 338 | break; |
| 339 | } |
| 340 | } |
| 341 | if (!int_in_endpointAddr) { |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 342 | err("Could not find int-in endpoint"); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 343 | return -EIO; |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 344 | } |
| 345 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 346 | /* allocate memory for our device state and initialize it */ |
| 347 | dev = kzalloc(sizeof(struct atp), GFP_KERNEL); |
| 348 | input_dev = input_allocate_device(); |
| 349 | if (!dev || !input_dev) { |
| 350 | err("Out of memory"); |
| 351 | goto err_free_devs; |
| 352 | } |
| 353 | |
| 354 | dev->udev = udev; |
| 355 | dev->input = input_dev; |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 356 | |
| 357 | dev->urb = usb_alloc_urb(0, GFP_KERNEL); |
| 358 | if (!dev->urb) { |
| 359 | retval = -ENOMEM; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 360 | goto err_free_devs; |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 361 | } |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 362 | |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 363 | dev->data = usb_buffer_alloc(dev->udev, ATP_DATASIZE, GFP_KERNEL, |
| 364 | &dev->urb->transfer_dma); |
| 365 | if (!dev->data) { |
| 366 | retval = -ENOMEM; |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 367 | goto err_free_urb; |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 368 | } |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 369 | |
| 370 | usb_fill_int_urb(dev->urb, udev, |
| 371 | usb_rcvintpipe(udev, int_in_endpointAddr), |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 372 | dev->data, ATP_DATASIZE, atp_complete, dev, 1); |
| 373 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 374 | usb_make_path(udev, dev->phys, sizeof(dev->phys)); |
| 375 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 376 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 377 | input_dev->name = "appletouch"; |
| 378 | input_dev->phys = dev->phys; |
| 379 | usb_to_input_id(dev->udev, &input_dev->id); |
| 380 | input_dev->cdev.dev = &iface->dev; |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 381 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 382 | input_dev->private = dev; |
| 383 | input_dev->open = atp_open; |
| 384 | input_dev->close = atp_close; |
| 385 | |
| 386 | set_bit(EV_ABS, input_dev->evbit); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 387 | |
| 388 | /* |
| 389 | * 12" and 15" Powerbooks only have 16 x sensors, |
| 390 | * 17" models are detected later. |
| 391 | */ |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 392 | input_set_abs_params(input_dev, ABS_X, 0, |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 393 | (16 - 1) * ATP_XFACT - 1, ATP_FUZZ, 0); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 394 | input_set_abs_params(input_dev, ABS_Y, 0, |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 395 | (ATP_YSENSORS - 1) * ATP_YFACT - 1, ATP_FUZZ, 0); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 396 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 397 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 398 | set_bit(EV_KEY, input_dev->evbit); |
| 399 | set_bit(BTN_TOUCH, input_dev->keybit); |
| 400 | set_bit(BTN_TOOL_FINGER, input_dev->keybit); |
| 401 | set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); |
| 402 | set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); |
| 403 | set_bit(BTN_LEFT, input_dev->keybit); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 404 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 405 | input_register_device(dev->input); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 406 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 407 | /* save our data pointer in this interface device */ |
| 408 | usb_set_intfdata(iface, dev); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 409 | |
| 410 | return 0; |
| 411 | |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 412 | err_free_urb: |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 413 | usb_free_urb(dev->urb); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 414 | err_free_devs: |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 415 | usb_set_intfdata(iface, NULL); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 416 | kfree(dev); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 417 | input_free_device(input_dev); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 418 | return retval; |
| 419 | } |
| 420 | |
| 421 | static void atp_disconnect(struct usb_interface *iface) |
| 422 | { |
| 423 | struct atp *dev = usb_get_intfdata(iface); |
| 424 | |
| 425 | usb_set_intfdata(iface, NULL); |
| 426 | if (dev) { |
| 427 | usb_kill_urb(dev->urb); |
Dmitry Torokhov | c5b7c7c | 2005-09-15 02:01:47 -0500 | [diff] [blame] | 428 | input_unregister_device(dev->input); |
Stelian Pop | f7214ff | 2005-09-08 10:19:48 +0200 | [diff] [blame] | 429 | usb_free_urb(dev->urb); |
| 430 | usb_buffer_free(dev->udev, ATP_DATASIZE, |
| 431 | dev->data, dev->urb->transfer_dma); |
| 432 | kfree(dev); |
| 433 | } |
| 434 | printk(KERN_INFO "input: appletouch disconnected\n"); |
| 435 | } |
| 436 | |
| 437 | static int atp_suspend(struct usb_interface *iface, pm_message_t message) |
| 438 | { |
| 439 | struct atp *dev = usb_get_intfdata(iface); |
| 440 | usb_kill_urb(dev->urb); |
| 441 | dev->valid = 0; |
| 442 | return 0; |
| 443 | } |
| 444 | |
| 445 | static int atp_resume(struct usb_interface *iface) |
| 446 | { |
| 447 | struct atp *dev = usb_get_intfdata(iface); |
| 448 | if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) |
| 449 | return -EIO; |
| 450 | |
| 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | static struct usb_driver atp_driver = { |
| 455 | .owner = THIS_MODULE, |
| 456 | .name = "appletouch", |
| 457 | .probe = atp_probe, |
| 458 | .disconnect = atp_disconnect, |
| 459 | .suspend = atp_suspend, |
| 460 | .resume = atp_resume, |
| 461 | .id_table = atp_table, |
| 462 | }; |
| 463 | |
| 464 | static int __init atp_init(void) |
| 465 | { |
| 466 | return usb_register(&atp_driver); |
| 467 | } |
| 468 | |
| 469 | static void __exit atp_exit(void) |
| 470 | { |
| 471 | usb_deregister(&atp_driver); |
| 472 | } |
| 473 | |
| 474 | module_init(atp_init); |
| 475 | module_exit(atp_exit); |