2 * Apple USB Touchpad (for post-February 2005 PowerBooks and MacBooks) driver
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 * Copyright (C) 2005 Michael Hanselmann (linux-kernel@hansmi.ch)
10 * Copyright (C) 2006 Nicolas Boichat (nicolas@boichat.ch)
12 * Thanks to Alex Harper <basilisk@foobox.net> for his inputs.
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 #include <linux/kernel.h>
31 #include <linux/errno.h>
32 #include <linux/init.h>
33 #include <linux/slab.h>
34 #include <linux/module.h>
35 #include <linux/usb/input.h>
37 /* Apple has powerbooks which have the keyboard with different Product IDs */
38 #define APPLE_VENDOR_ID 0x05AC
40 /* These names come from Info.plist in AppleUSBTrackpad.kext */
41 #define FOUNTAIN_ANSI_PRODUCT_ID 0x020E
42 #define FOUNTAIN_ISO_PRODUCT_ID 0x020F
44 #define FOUNTAIN_TP_ONLY_PRODUCT_ID 0x030A
46 #define GEYSER1_TP_ONLY_PRODUCT_ID 0x030B
48 #define GEYSER_ANSI_PRODUCT_ID 0x0214
49 #define GEYSER_ISO_PRODUCT_ID 0x0215
50 #define GEYSER_JIS_PRODUCT_ID 0x0216
53 #define GEYSER3_ANSI_PRODUCT_ID 0x0217
54 #define GEYSER3_ISO_PRODUCT_ID 0x0218
55 #define GEYSER3_JIS_PRODUCT_ID 0x0219
58 * Geyser IV: same as Geyser III according to Info.plist in AppleUSBTrackpad.kext
59 * -> same IOClass (AppleUSBGrIIITrackpad), same acceleration tables
61 #define GEYSER4_ANSI_PRODUCT_ID 0x021A
62 #define GEYSER4_ISO_PRODUCT_ID 0x021B
63 #define GEYSER4_JIS_PRODUCT_ID 0x021C
65 #define GEYSER4_HF_ANSI_PRODUCT_ID 0x0229
66 #define GEYSER4_HF_ISO_PRODUCT_ID 0x022A
67 #define GEYSER4_HF_JIS_PRODUCT_ID 0x022B
69 #define ATP_DEVICE(prod) \
70 .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
71 USB_DEVICE_ID_MATCH_INT_CLASS | \
72 USB_DEVICE_ID_MATCH_INT_PROTOCOL, \
73 .idVendor = APPLE_VENDOR_ID, \
74 .idProduct = (prod), \
75 .bInterfaceClass = 0x03, \
76 .bInterfaceProtocol = 0x02
78 /* table of devices that work with this driver */
79 static struct usb_device_id atp_table [] = {
80 { ATP_DEVICE(FOUNTAIN_ANSI_PRODUCT_ID) },
81 { ATP_DEVICE(FOUNTAIN_ISO_PRODUCT_ID) },
82 { ATP_DEVICE(FOUNTAIN_TP_ONLY_PRODUCT_ID) },
83 { ATP_DEVICE(GEYSER1_TP_ONLY_PRODUCT_ID) },
85 /* PowerBooks Oct 2005 */
86 { ATP_DEVICE(GEYSER_ANSI_PRODUCT_ID) },
87 { ATP_DEVICE(GEYSER_ISO_PRODUCT_ID) },
88 { ATP_DEVICE(GEYSER_JIS_PRODUCT_ID) },
90 /* Core Duo MacBook & MacBook Pro */
91 { ATP_DEVICE(GEYSER3_ANSI_PRODUCT_ID) },
92 { ATP_DEVICE(GEYSER3_ISO_PRODUCT_ID) },
93 { ATP_DEVICE(GEYSER3_JIS_PRODUCT_ID) },
95 /* Core2 Duo MacBook & MacBook Pro */
96 { ATP_DEVICE(GEYSER4_ANSI_PRODUCT_ID) },
97 { ATP_DEVICE(GEYSER4_ISO_PRODUCT_ID) },
98 { ATP_DEVICE(GEYSER4_JIS_PRODUCT_ID) },
100 { ATP_DEVICE(GEYSER4_HF_ANSI_PRODUCT_ID) },
101 { ATP_DEVICE(GEYSER4_HF_ISO_PRODUCT_ID) },
102 { ATP_DEVICE(GEYSER4_HF_JIS_PRODUCT_ID) },
104 /* Terminating entry */
107 MODULE_DEVICE_TABLE (usb, atp_table);
110 * number of sensors. Note that only 16 instead of 26 X (horizontal)
111 * sensors exist on 12" and 15" PowerBooks. All models have 16 Y
112 * (vertical) sensors.
114 #define ATP_XSENSORS 26
115 #define ATP_YSENSORS 16
117 /* amount of fuzz this touchpad generates */
120 /* maximum pressure this driver will report */
121 #define ATP_PRESSURE 300
123 * multiplication factor for the X and Y coordinates.
124 * We try to keep the touchpad aspect ratio while still doing only simple
126 * The factors below give coordinates like:
127 * 0 <= x < 960 on 12" and 15" Powerbooks
128 * 0 <= x < 1600 on 17" Powerbooks
135 * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is
138 #define ATP_THRESHOLD 5
140 /* Geyser initialization constants */
141 #define ATP_GEYSER_MODE_READ_REQUEST_ID 1
142 #define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9
143 #define ATP_GEYSER_MODE_REQUEST_VALUE 0x300
144 #define ATP_GEYSER_MODE_REQUEST_INDEX 0
145 #define ATP_GEYSER_MODE_VENDOR_VALUE 0x04
147 /* Structure to hold all of our device specific stuff */
150 struct usb_device * udev; /* usb device */
151 struct urb * urb; /* usb request block */
152 signed char * data; /* transferred data */
153 struct input_dev * input; /* input dev */
154 unsigned char open; /* non-zero if opened */
155 unsigned char valid; /* are the sensors valid ? */
156 unsigned char size_detect_done;
157 unsigned char overflowwarn; /* overflow warning printed? */
158 int x_old; /* last reported x/y, */
159 int y_old; /* used for smoothing */
160 /* current value of the sensors */
161 signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS];
162 /* last value of the sensors */
163 signed char xy_old[ATP_XSENSORS + ATP_YSENSORS];
164 /* accumulated sensors */
165 int xy_acc[ATP_XSENSORS + ATP_YSENSORS];
166 int datalen; /* size of an USB urb transfer */
167 int idlecount; /* number of empty packets */
168 struct work_struct work;
171 #define dbg_dump(msg, tab) \
174 printk("appletouch: %s %lld", msg, (long long)jiffies); \
175 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) \
176 printk(" %02x", tab[i]); \
180 #define dprintk(format, a...) \
182 if (debug) printk(KERN_DEBUG format, ##a); \
185 MODULE_AUTHOR("Johannes Berg, Stelian Pop, Frank Arnold, Michael Hanselmann");
186 MODULE_DESCRIPTION("Apple PowerBooks USB touchpad driver");
187 MODULE_LICENSE("GPL");
190 * Make the threshold a module parameter
192 static int threshold = ATP_THRESHOLD;
193 module_param(threshold, int, 0644);
194 MODULE_PARM_DESC(threshold, "Discards any change in data from a sensor (trackpad has hundreds of these sensors) less than this value");
196 static int debug = 1;
197 module_param(debug, int, 0644);
198 MODULE_PARM_DESC(debug, "Activate debugging output");
200 static inline int atp_is_fountain(struct atp *dev)
202 u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct);
204 return productId == FOUNTAIN_ANSI_PRODUCT_ID ||
205 productId == FOUNTAIN_ISO_PRODUCT_ID ||
206 productId == FOUNTAIN_TP_ONLY_PRODUCT_ID;
209 /* Checks if the device a Geyser 2 (ANSI, ISO, JIS) */
210 static inline int atp_is_geyser_2(struct atp *dev)
212 u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct);
214 return (productId == GEYSER_ANSI_PRODUCT_ID) ||
215 (productId == GEYSER_ISO_PRODUCT_ID) ||
216 (productId == GEYSER_JIS_PRODUCT_ID);
219 static inline int atp_is_geyser_3(struct atp *dev)
221 u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct);
223 return (productId == GEYSER3_ANSI_PRODUCT_ID) ||
224 (productId == GEYSER3_ISO_PRODUCT_ID) ||
225 (productId == GEYSER3_JIS_PRODUCT_ID) ||
226 (productId == GEYSER4_ANSI_PRODUCT_ID) ||
227 (productId == GEYSER4_ISO_PRODUCT_ID) ||
228 (productId == GEYSER4_JIS_PRODUCT_ID) ||
229 (productId == GEYSER4_HF_ANSI_PRODUCT_ID) ||
230 (productId == GEYSER4_HF_ISO_PRODUCT_ID) ||
231 (productId == GEYSER4_HF_JIS_PRODUCT_ID);
235 * By default newer Geyser devices send standard USB HID mouse
236 * packets (Report ID 2). This code changes device mode, so it
237 * sends raw sensor reports (Report ID 5).
239 static int atp_geyser_init(struct usb_device *udev)
244 size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
245 ATP_GEYSER_MODE_READ_REQUEST_ID,
246 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
247 ATP_GEYSER_MODE_REQUEST_VALUE,
248 ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000);
251 err("Could not do mode read request from device"
252 " (Geyser Raw mode)");
256 /* Apply the mode switch */
257 data[0] = ATP_GEYSER_MODE_VENDOR_VALUE;
259 size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
260 ATP_GEYSER_MODE_WRITE_REQUEST_ID,
261 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
262 ATP_GEYSER_MODE_REQUEST_VALUE,
263 ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000);
266 err("Could not do mode write request to device"
267 " (Geyser Raw mode)");
274 * Reinitialise the device. This usually stops stream of empty packets
277 static void atp_reinit(struct work_struct *work)
279 struct atp *dev = container_of(work, struct atp, work);
280 struct usb_device *udev = dev->udev;
285 atp_geyser_init(udev);
287 retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
289 err("%s - usb_submit_urb failed with result %d",
290 __FUNCTION__, retval);
294 static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact,
295 int *z, int *fingers)
298 /* values to calculate mean */
299 int pcum = 0, psum = 0;
300 int is_increasing = 0;
304 for (i = 0; i < nb_sensors; i++) {
305 if (xy_sensors[i] < threshold) {
313 * Makes the finger detection more versatile. For example,
314 * two fingers with no gap will be detected. Also, my
315 * tests show it less likely to have intermittent loss
316 * of multiple finger readings while moving around (scrolling).
318 * Changes the multiple finger detection to counting humps on
319 * sensors (transitions from nonincreasing to increasing)
320 * instead of counting transitions from low sensors (no
321 * finger reading) to high sensors (finger above
324 * - Jason Parekh <jasonparekh@gmail.com>
326 if (i < 1 || (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) {
329 } else if (i > 0 && xy_sensors[i - 1] >= xy_sensors[i]) {
334 * Subtracts threshold so a high sensor that just passes the threshold
335 * won't skew the calculated absolute coordinate. Fixes an issue
336 * where slowly moving the mouse would occassionaly jump a number of
337 * pixels (let me restate--slowly moving the mouse makes this issue
340 pcum += (xy_sensors[i] - threshold) * i;
341 psum += (xy_sensors[i] - threshold);
346 return pcum * fact / psum;
352 static inline void atp_report_fingers(struct input_dev *input, int fingers)
354 input_report_key(input, BTN_TOOL_FINGER, fingers == 1);
355 input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2);
356 input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2);
359 static void atp_complete(struct urb* urb)
361 int x, y, x_z, y_z, x_f, y_f;
364 struct atp *dev = urb->context;
366 switch (urb->status) {
371 if(!dev->overflowwarn) {
372 printk(KERN_WARNING "appletouch: OVERFLOW with data "
373 "length %d, actual length is %d\n",
374 dev->datalen, dev->urb->actual_length);
375 dev->overflowwarn = 1;
380 /* This urb is terminated, clean up */
381 dbg("%s - urb shutting down with status: %d",
382 __FUNCTION__, urb->status);
385 dbg("%s - nonzero urb status received: %d",
386 __FUNCTION__, urb->status);
390 /* drop incomplete datasets */
391 if (dev->urb->actual_length != dev->datalen) {
392 dprintk("appletouch: incomplete data package"
393 " (first byte: %d, length: %d).\n",
394 dev->data[0], dev->urb->actual_length);
398 /* reorder the sensors values */
399 if (atp_is_geyser_3(dev)) {
400 memset(dev->xy_cur, 0, sizeof(dev->xy_cur));
403 * The values are laid out like this:
404 * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ...
405 * '-' is an unused value.
409 for (i = 0, j = 19; i < 20; i += 2, j += 3) {
410 dev->xy_cur[i] = dev->data[j + 1];
411 dev->xy_cur[i + 1] = dev->data[j + 2];
414 for (i = 0, j = 1; i < 9; i += 2, j += 3) {
415 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1];
416 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2];
418 } else if (atp_is_geyser_2(dev)) {
419 memset(dev->xy_cur, 0, sizeof(dev->xy_cur));
422 * The values are laid out like this:
423 * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ...
424 * '-' is an unused value.
428 for (i = 0, j = 19; i < 20; i += 2, j += 3) {
429 dev->xy_cur[i] = dev->data[j];
430 dev->xy_cur[i + 1] = dev->data[j + 1];
434 for (i = 0, j = 1; i < 9; i += 2, j += 3) {
435 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j];
436 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1];
439 for (i = 0; i < 8; i++) {
441 dev->xy_cur[i ] = dev->data[5 * i + 2];
442 dev->xy_cur[i + 8] = dev->data[5 * i + 4];
443 dev->xy_cur[i + 16] = dev->data[5 * i + 42];
445 dev->xy_cur[i + 24] = dev->data[5 * i + 44];
448 dev->xy_cur[i + 26] = dev->data[5 * i + 1];
449 dev->xy_cur[i + 34] = dev->data[5 * i + 3];
453 dbg_dump("sample", dev->xy_cur);
458 dev->x_old = dev->y_old = -1;
459 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
461 if (dev->size_detect_done ||
462 atp_is_geyser_3(dev)) /* No 17" Macbooks (yet) */
465 /* 17" Powerbooks have extra X sensors */
466 for (i = (atp_is_geyser_2(dev) ? 15 : 16); i < ATP_XSENSORS; i++) {
470 printk(KERN_INFO "appletouch: 17\" model detected.\n");
471 if (atp_is_geyser_2(dev))
472 input_set_abs_params(dev->input, ABS_X, 0,
477 input_set_abs_params(dev->input, ABS_X, 0,
484 dev->size_detect_done = 1;
488 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) {
489 /* accumulate the change */
490 signed char change = dev->xy_old[i] - dev->xy_cur[i];
491 dev->xy_acc[i] -= change;
493 /* prevent down drifting */
494 if (dev->xy_acc[i] < 0)
498 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
500 dbg_dump("accumulator", dev->xy_acc);
502 x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS,
503 ATP_XFACT, &x_z, &x_f);
504 y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS,
505 ATP_YFACT, &y_z, &y_f);
506 key = dev->data[dev->datalen - 1] & 1;
509 if (dev->x_old != -1) {
510 x = (dev->x_old * 3 + x) >> 2;
511 y = (dev->y_old * 3 + y) >> 2;
516 printk(KERN_DEBUG "appletouch: X: %3d Y: %3d "
520 input_report_key(dev->input, BTN_TOUCH, 1);
521 input_report_abs(dev->input, ABS_X, x);
522 input_report_abs(dev->input, ABS_Y, y);
523 input_report_abs(dev->input, ABS_PRESSURE,
524 min(ATP_PRESSURE, x_z + y_z));
525 atp_report_fingers(dev->input, max(x_f, y_f));
530 } else if (!x && !y) {
532 dev->x_old = dev->y_old = -1;
533 input_report_key(dev->input, BTN_TOUCH, 0);
534 input_report_abs(dev->input, ABS_PRESSURE, 0);
535 atp_report_fingers(dev->input, 0);
537 /* reset the accumulator on release */
538 memset(dev->xy_acc, 0, sizeof(dev->xy_acc));
541 input_report_key(dev->input, BTN_LEFT, key);
542 input_sync(dev->input);
545 * Many Geysers will continue to send packets continually after
546 * the first touch unless reinitialised. Do so if it's been
547 * idle for a while in order to avoid waking the kernel up
548 * several hundred times a second. Re-initialization does not
549 * work on Fountain touchpads.
551 if (!atp_is_fountain(dev)) {
552 if (!x && !y && !key) {
554 if (dev->idlecount == 10) {
556 schedule_work(&dev->work);
557 /* Don't resubmit urb here, wait for reinit */
565 retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
567 err("%s - usb_submit_urb failed with result %d",
568 __FUNCTION__, retval);
572 static int atp_open(struct input_dev *input)
574 struct atp *dev = input_get_drvdata(input);
576 if (usb_submit_urb(dev->urb, GFP_ATOMIC))
583 static void atp_close(struct input_dev *input)
585 struct atp *dev = input_get_drvdata(input);
587 usb_kill_urb(dev->urb);
588 cancel_work_sync(&dev->work);
592 static int atp_handle_geyser(struct atp *dev)
594 struct usb_device *udev = dev->udev;
596 if (!atp_is_fountain(dev)) {
597 /* switch to raw sensor mode */
598 if (atp_geyser_init(udev))
601 printk(KERN_INFO "appletouch: Geyser mode initialized.\n");
607 static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id)
610 struct input_dev *input_dev;
611 struct usb_device *udev = interface_to_usbdev(iface);
612 struct usb_host_interface *iface_desc;
613 struct usb_endpoint_descriptor *endpoint;
614 int int_in_endpointAddr = 0;
615 int i, error = -ENOMEM;
617 /* set up the endpoint information */
618 /* use only the first interrupt-in endpoint */
619 iface_desc = iface->cur_altsetting;
620 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
621 endpoint = &iface_desc->endpoint[i].desc;
622 if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) {
623 /* we found an interrupt in endpoint */
624 int_in_endpointAddr = endpoint->bEndpointAddress;
628 if (!int_in_endpointAddr) {
629 err("Could not find int-in endpoint");
633 /* allocate memory for our device state and initialize it */
634 dev = kzalloc(sizeof(struct atp), GFP_KERNEL);
635 input_dev = input_allocate_device();
636 if (!dev || !input_dev) {
637 err("Out of memory");
642 dev->input = input_dev;
643 dev->overflowwarn = 0;
644 if (atp_is_geyser_3(dev))
646 else if (atp_is_geyser_2(dev))
651 dev->urb = usb_alloc_urb(0, GFP_KERNEL);
655 dev->data = usb_buffer_alloc(dev->udev, dev->datalen, GFP_KERNEL,
656 &dev->urb->transfer_dma);
660 usb_fill_int_urb(dev->urb, udev,
661 usb_rcvintpipe(udev, int_in_endpointAddr),
662 dev->data, dev->datalen, atp_complete, dev, 1);
664 error = atp_handle_geyser(dev);
666 goto err_free_buffer;
668 usb_make_path(udev, dev->phys, sizeof(dev->phys));
669 strlcat(dev->phys, "/input0", sizeof(dev->phys));
671 input_dev->name = "appletouch";
672 input_dev->phys = dev->phys;
673 usb_to_input_id(dev->udev, &input_dev->id);
674 input_dev->dev.parent = &iface->dev;
676 input_set_drvdata(input_dev, dev);
678 input_dev->open = atp_open;
679 input_dev->close = atp_close;
681 set_bit(EV_ABS, input_dev->evbit);
683 if (atp_is_geyser_3(dev)) {
685 * MacBook have 20 X sensors, 10 Y sensors
687 input_set_abs_params(input_dev, ABS_X, 0,
688 ((20 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0);
689 input_set_abs_params(input_dev, ABS_Y, 0,
690 ((10 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0);
691 } else if (atp_is_geyser_2(dev)) {
693 * Oct 2005 15" PowerBooks have 15 X sensors, 17" are detected
696 input_set_abs_params(input_dev, ABS_X, 0,
697 ((15 - 1) * ATP_XFACT) - 1, ATP_FUZZ, 0);
698 input_set_abs_params(input_dev, ABS_Y, 0,
699 ((9 - 1) * ATP_YFACT) - 1, ATP_FUZZ, 0);
702 * 12" and 15" Powerbooks only have 16 x sensors,
703 * 17" models are detected later.
705 input_set_abs_params(input_dev, ABS_X, 0,
706 (16 - 1) * ATP_XFACT - 1, ATP_FUZZ, 0);
707 input_set_abs_params(input_dev, ABS_Y, 0,
708 (ATP_YSENSORS - 1) * ATP_YFACT - 1, ATP_FUZZ, 0);
710 input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0);
712 set_bit(EV_KEY, input_dev->evbit);
713 set_bit(BTN_TOUCH, input_dev->keybit);
714 set_bit(BTN_TOOL_FINGER, input_dev->keybit);
715 set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
716 set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
717 set_bit(BTN_LEFT, input_dev->keybit);
719 error = input_register_device(dev->input);
721 goto err_free_buffer;
723 /* save our data pointer in this interface device */
724 usb_set_intfdata(iface, dev);
726 INIT_WORK(&dev->work, atp_reinit);
731 usb_buffer_free(dev->udev, dev->datalen,
732 dev->data, dev->urb->transfer_dma);
734 usb_free_urb(dev->urb);
736 usb_set_intfdata(iface, NULL);
738 input_free_device(input_dev);
742 static void atp_disconnect(struct usb_interface *iface)
744 struct atp *dev = usb_get_intfdata(iface);
746 usb_set_intfdata(iface, NULL);
748 usb_kill_urb(dev->urb);
749 input_unregister_device(dev->input);
750 usb_buffer_free(dev->udev, dev->datalen,
751 dev->data, dev->urb->transfer_dma);
752 usb_free_urb(dev->urb);
755 printk(KERN_INFO "input: appletouch disconnected\n");
758 static int atp_recover(struct atp *dev)
762 error = atp_handle_geyser(dev);
766 if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
772 static int atp_suspend(struct usb_interface *iface, pm_message_t message)
774 struct atp *dev = usb_get_intfdata(iface);
776 usb_kill_urb(dev->urb);
782 static int atp_resume(struct usb_interface *iface)
784 struct atp *dev = usb_get_intfdata(iface);
786 if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
792 static int atp_reset_resume(struct usb_interface *iface)
794 struct atp *dev = usb_get_intfdata(iface);
796 return atp_recover(dev);
799 static struct usb_driver atp_driver = {
800 .name = "appletouch",
802 .disconnect = atp_disconnect,
803 .suspend = atp_suspend,
804 .resume = atp_resume,
805 .reset_resume = atp_reset_resume,
806 .id_table = atp_table,
809 static int __init atp_init(void)
811 return usb_register(&atp_driver);
814 static void __exit atp_exit(void)
816 usb_deregister(&atp_driver);
819 module_init(atp_init);
820 module_exit(atp_exit);