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) 2005-2008 Johannes Berg (johannes@sipsolutions.net)
6 * Copyright (C) 2005-2008 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)
11 * Copyright (C) 2007-2008 Sven Anders (anders@anduras.de)
13 * Thanks to Alex Harper <basilisk@foobox.net> for his inputs.
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 #include <linux/kernel.h>
32 #include <linux/errno.h>
33 #include <linux/init.h>
34 #include <linux/slab.h>
35 #include <linux/module.h>
36 #include <linux/usb/input.h>
39 * Note: We try to keep the touchpad aspect ratio while still doing only
41 * 0 <= x <= (xsensors - 1) * xfact
42 * 0 <= y <= (ysensors - 1) * yfact
45 int xsensors; /* number of X sensors */
46 int xsensors_17; /* 17" models have more sensors */
47 int ysensors; /* number of Y sensors */
48 int xfact; /* X multiplication factor */
49 int yfact; /* Y multiplication factor */
50 int datalen; /* size of USB transfers */
51 void (*callback)(struct urb *); /* callback function */
54 static void atp_complete_geyser_1_2(struct urb *urb);
55 static void atp_complete_geyser_3_4(struct urb *urb);
57 static const struct atp_info fountain_info = {
64 .callback = atp_complete_geyser_1_2,
67 static const struct atp_info geyser1_info = {
74 .callback = atp_complete_geyser_1_2,
77 static const struct atp_info geyser2_info = {
84 .callback = atp_complete_geyser_1_2,
87 static const struct atp_info geyser3_info = {
93 .callback = atp_complete_geyser_3_4,
96 static const struct atp_info geyser4_info = {
102 .callback = atp_complete_geyser_3_4,
105 #define ATP_DEVICE(prod, info) \
107 .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
108 USB_DEVICE_ID_MATCH_INT_CLASS | \
109 USB_DEVICE_ID_MATCH_INT_PROTOCOL, \
110 .idVendor = 0x05ac, /* Apple */ \
111 .idProduct = (prod), \
112 .bInterfaceClass = 0x03, \
113 .bInterfaceProtocol = 0x02, \
114 .driver_info = (unsigned long) &info, \
118 * Table of devices (Product IDs) that work with this driver.
119 * (The names come from Info.plist in AppleUSBTrackpad.kext,
120 * According to Info.plist Geyser IV is the same as Geyser III.)
123 static struct usb_device_id atp_table[] = {
124 /* PowerBooks Feb 2005, iBooks G4 */
125 ATP_DEVICE(0x020e, fountain_info), /* FOUNTAIN ANSI */
126 ATP_DEVICE(0x020f, fountain_info), /* FOUNTAIN ISO */
127 ATP_DEVICE(0x030a, fountain_info), /* FOUNTAIN TP ONLY */
128 ATP_DEVICE(0x030b, geyser1_info), /* GEYSER 1 TP ONLY */
130 /* PowerBooks Oct 2005 */
131 ATP_DEVICE(0x0214, geyser2_info), /* GEYSER 2 ANSI */
132 ATP_DEVICE(0x0215, geyser2_info), /* GEYSER 2 ISO */
133 ATP_DEVICE(0x0216, geyser2_info), /* GEYSER 2 JIS */
135 /* Core Duo MacBook & MacBook Pro */
136 ATP_DEVICE(0x0217, geyser3_info), /* GEYSER 3 ANSI */
137 ATP_DEVICE(0x0218, geyser3_info), /* GEYSER 3 ISO */
138 ATP_DEVICE(0x0219, geyser3_info), /* GEYSER 3 JIS */
140 /* Core2 Duo MacBook & MacBook Pro */
141 ATP_DEVICE(0x021a, geyser4_info), /* GEYSER 4 ANSI */
142 ATP_DEVICE(0x021b, geyser4_info), /* GEYSER 4 ISO */
143 ATP_DEVICE(0x021c, geyser4_info), /* GEYSER 4 JIS */
145 /* Core2 Duo MacBook3,1 */
146 ATP_DEVICE(0x0229, geyser4_info), /* GEYSER 4 HF ANSI */
147 ATP_DEVICE(0x022a, geyser4_info), /* GEYSER 4 HF ISO */
148 ATP_DEVICE(0x022b, geyser4_info), /* GEYSER 4 HF JIS */
150 /* Terminating entry */
153 MODULE_DEVICE_TABLE(usb, atp_table);
155 /* maximum number of sensors */
156 #define ATP_XSENSORS 26
157 #define ATP_YSENSORS 16
159 /* amount of fuzz this touchpad generates */
162 /* maximum pressure this driver will report */
163 #define ATP_PRESSURE 300
166 * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is
169 #define ATP_THRESHOLD 5
171 /* Geyser initialization constants */
172 #define ATP_GEYSER_MODE_READ_REQUEST_ID 1
173 #define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9
174 #define ATP_GEYSER_MODE_REQUEST_VALUE 0x300
175 #define ATP_GEYSER_MODE_REQUEST_INDEX 0
176 #define ATP_GEYSER_MODE_VENDOR_VALUE 0x04
179 * enum atp_status_bits - status bit meanings
181 * These constants represent the meaning of the status bits.
184 * @ATP_STATUS_BUTTON: The button was pressed
185 * @ATP_STATUS_BASE_UPDATE: Update of the base values (untouched pad)
186 * @ATP_STATUS_FROM_RESET: Reset previously performed
188 enum atp_status_bits {
189 ATP_STATUS_BUTTON = BIT(0),
190 ATP_STATUS_BASE_UPDATE = BIT(2),
191 ATP_STATUS_FROM_RESET = BIT(4),
194 /* Structure to hold all of our device specific stuff */
197 struct usb_device *udev; /* usb device */
198 struct urb *urb; /* usb request block */
199 u8 *data; /* transferred data */
200 struct input_dev *input; /* input dev */
201 const struct atp_info *info; /* touchpad model */
203 bool valid; /* are the samples valid? */
204 bool size_detect_done;
205 bool overflow_warned;
206 int x_old; /* last reported x/y, */
207 int y_old; /* used for smoothing */
208 signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS];
209 signed char xy_old[ATP_XSENSORS + ATP_YSENSORS];
210 int xy_acc[ATP_XSENSORS + ATP_YSENSORS];
211 int idlecount; /* number of empty packets */
212 struct work_struct work;
215 #define dbg_dump(msg, tab) \
218 printk(KERN_DEBUG "appletouch: %s", msg); \
219 for (__i = 0; __i < ATP_XSENSORS + ATP_YSENSORS; __i++) \
220 printk(" %02x", tab[__i]); \
224 #define dprintk(format, a...) \
227 printk(KERN_DEBUG format, ##a); \
230 MODULE_AUTHOR("Johannes Berg");
231 MODULE_AUTHOR("Stelian Pop");
232 MODULE_AUTHOR("Frank Arnold");
233 MODULE_AUTHOR("Michael Hanselmann");
234 MODULE_AUTHOR("Sven Anders");
235 MODULE_DESCRIPTION("Apple PowerBook and MacBook USB touchpad driver");
236 MODULE_LICENSE("GPL");
239 * Make the threshold a module parameter
241 static int threshold = ATP_THRESHOLD;
242 module_param(threshold, int, 0644);
243 MODULE_PARM_DESC(threshold, "Discard any change in data from a sensor"
244 " (the trackpad has many of these sensors)"
245 " less than this value.");
248 module_param(debug, int, 0644);
249 MODULE_PARM_DESC(debug, "Activate debugging output");
252 * By default newer Geyser devices send standard USB HID mouse
253 * packets (Report ID 2). This code changes device mode, so it
254 * sends raw sensor reports (Report ID 5).
256 static int atp_geyser_init(struct usb_device *udev)
262 size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
263 ATP_GEYSER_MODE_READ_REQUEST_ID,
264 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
265 ATP_GEYSER_MODE_REQUEST_VALUE,
266 ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000);
269 dprintk("atp_geyser_init: read error\n");
270 for (i = 0; i < 8; i++)
271 dprintk("appletouch[%d]: %d\n", i, data[i]);
273 err("Failed to read mode from device.");
277 /* Apply the mode switch */
278 data[0] = ATP_GEYSER_MODE_VENDOR_VALUE;
280 size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
281 ATP_GEYSER_MODE_WRITE_REQUEST_ID,
282 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
283 ATP_GEYSER_MODE_REQUEST_VALUE,
284 ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000);
287 dprintk("atp_geyser_init: write error\n");
288 for (i = 0; i < 8; i++)
289 dprintk("appletouch[%d]: %d\n", i, data[i]);
291 err("Failed to request geyser raw mode");
298 * Reinitialise the device. This usually stops stream of empty packets
301 static void atp_reinit(struct work_struct *work)
303 struct atp *dev = container_of(work, struct atp, work);
304 struct usb_device *udev = dev->udev;
307 dprintk("appletouch: putting appletouch to sleep (reinit)\n");
308 atp_geyser_init(udev);
310 retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
312 err("atp_reinit: usb_submit_urb failed with error %d",
316 static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact,
317 int *z, int *fingers)
320 /* values to calculate mean */
321 int pcum = 0, psum = 0;
322 int is_increasing = 0;
326 for (i = 0; i < nb_sensors; i++) {
327 if (xy_sensors[i] < threshold) {
335 * Makes the finger detection more versatile. For example,
336 * two fingers with no gap will be detected. Also, my
337 * tests show it less likely to have intermittent loss
338 * of multiple finger readings while moving around (scrolling).
340 * Changes the multiple finger detection to counting humps on
341 * sensors (transitions from nonincreasing to increasing)
342 * instead of counting transitions from low sensors (no
343 * finger reading) to high sensors (finger above
346 * - Jason Parekh <jasonparekh@gmail.com>
349 (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) {
352 } else if (i > 0 && xy_sensors[i - 1] >= xy_sensors[i]) {
357 * Subtracts threshold so a high sensor that just passes the
358 * threshold won't skew the calculated absolute coordinate.
359 * Fixes an issue where slowly moving the mouse would
360 * occasionally jump a number of pixels (slowly moving the
361 * finger makes this issue most apparent.)
363 pcum += (xy_sensors[i] - threshold) * i;
364 psum += (xy_sensors[i] - threshold);
369 return pcum * fact / psum;
375 static inline void atp_report_fingers(struct input_dev *input, int fingers)
377 input_report_key(input, BTN_TOOL_FINGER, fingers == 1);
378 input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2);
379 input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2);
382 /* Check URB status and for correct length of data package */
384 #define ATP_URB_STATUS_SUCCESS 0
385 #define ATP_URB_STATUS_ERROR 1
386 #define ATP_URB_STATUS_ERROR_FATAL 2
388 static int atp_status_check(struct urb *urb)
390 struct atp *dev = urb->context;
392 switch (urb->status) {
397 if (!dev->overflow_warned) {
398 printk(KERN_WARNING "appletouch: OVERFLOW with data "
399 "length %d, actual length is %d\n",
400 dev->info->datalen, dev->urb->actual_length);
401 dev->overflow_warned = true;
406 /* This urb is terminated, clean up */
407 dbg("atp_complete: urb shutting down with status: %d",
409 return ATP_URB_STATUS_ERROR_FATAL;
412 dbg("atp_complete: nonzero urb status received: %d",
414 return ATP_URB_STATUS_ERROR;
417 /* drop incomplete datasets */
418 if (dev->urb->actual_length != dev->info->datalen) {
419 dprintk("appletouch: incomplete data package"
420 " (first byte: %d, length: %d).\n",
421 dev->data[0], dev->urb->actual_length);
422 return ATP_URB_STATUS_ERROR;
425 return ATP_URB_STATUS_SUCCESS;
428 static void atp_detect_size(struct atp *dev)
432 /* 17" Powerbooks have extra X sensors */
433 for (i = dev->info->xsensors; i < ATP_XSENSORS; i++) {
434 if (dev->xy_cur[i]) {
436 printk(KERN_INFO "appletouch: 17\" model detected.\n");
438 input_set_abs_params(dev->input, ABS_X, 0,
439 (dev->info->xsensors_17 - 1) *
440 dev->info->xfact - 1,
448 * USB interrupt callback functions
451 /* Interrupt function for older touchpads: FOUNTAIN/GEYSER1/GEYSER2 */
453 static void atp_complete_geyser_1_2(struct urb *urb)
455 int x, y, x_z, y_z, x_f, y_f;
458 struct atp *dev = urb->context;
459 int status = atp_status_check(urb);
461 if (status == ATP_URB_STATUS_ERROR_FATAL)
463 else if (status == ATP_URB_STATUS_ERROR)
466 /* reorder the sensors values */
467 if (dev->info == &geyser2_info) {
468 memset(dev->xy_cur, 0, sizeof(dev->xy_cur));
471 * The values are laid out like this:
472 * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ...
473 * '-' is an unused value.
477 for (i = 0, j = 19; i < 20; i += 2, j += 3) {
478 dev->xy_cur[i] = dev->data[j];
479 dev->xy_cur[i + 1] = dev->data[j + 1];
483 for (i = 0, j = 1; i < 9; i += 2, j += 3) {
484 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j];
485 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1];
488 for (i = 0; i < 8; i++) {
490 dev->xy_cur[i + 0] = dev->data[5 * i + 2];
491 dev->xy_cur[i + 8] = dev->data[5 * i + 4];
492 dev->xy_cur[i + 16] = dev->data[5 * i + 42];
494 dev->xy_cur[i + 24] = dev->data[5 * i + 44];
497 dev->xy_cur[ATP_XSENSORS + i] = dev->data[5 * i + 1];
498 dev->xy_cur[ATP_XSENSORS + i + 8] = dev->data[5 * i + 3];
502 dbg_dump("sample", dev->xy_cur);
507 dev->x_old = dev->y_old = -1;
509 /* Store first sample */
510 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
512 /* Perform size detection, if not done already */
513 if (unlikely(!dev->size_detect_done)) {
514 atp_detect_size(dev);
515 dev->size_detect_done = 1;
520 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) {
521 /* accumulate the change */
522 signed char change = dev->xy_old[i] - dev->xy_cur[i];
523 dev->xy_acc[i] -= change;
525 /* prevent down drifting */
526 if (dev->xy_acc[i] < 0)
530 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
532 dbg_dump("accumulator", dev->xy_acc);
534 x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS,
535 dev->info->xfact, &x_z, &x_f);
536 y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS,
537 dev->info->yfact, &y_z, &y_f);
538 key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON;
541 if (dev->x_old != -1) {
542 x = (dev->x_old * 3 + x) >> 2;
543 y = (dev->y_old * 3 + y) >> 2;
548 printk(KERN_DEBUG "appletouch: "
549 "X: %3d Y: %3d Xz: %3d Yz: %3d\n",
552 input_report_key(dev->input, BTN_TOUCH, 1);
553 input_report_abs(dev->input, ABS_X, x);
554 input_report_abs(dev->input, ABS_Y, y);
555 input_report_abs(dev->input, ABS_PRESSURE,
556 min(ATP_PRESSURE, x_z + y_z));
557 atp_report_fingers(dev->input, max(x_f, y_f));
562 } else if (!x && !y) {
564 dev->x_old = dev->y_old = -1;
565 input_report_key(dev->input, BTN_TOUCH, 0);
566 input_report_abs(dev->input, ABS_PRESSURE, 0);
567 atp_report_fingers(dev->input, 0);
569 /* reset the accumulator on release */
570 memset(dev->xy_acc, 0, sizeof(dev->xy_acc));
573 input_report_key(dev->input, BTN_LEFT, key);
574 input_sync(dev->input);
577 retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
579 err("atp_complete: usb_submit_urb failed with result %d",
583 /* Interrupt function for older touchpads: GEYSER3/GEYSER4 */
585 static void atp_complete_geyser_3_4(struct urb *urb)
587 int x, y, x_z, y_z, x_f, y_f;
590 struct atp *dev = urb->context;
591 int status = atp_status_check(urb);
593 if (status == ATP_URB_STATUS_ERROR_FATAL)
595 else if (status == ATP_URB_STATUS_ERROR)
598 /* Reorder the sensors values:
600 * The values are laid out like this:
601 * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ...
602 * '-' is an unused value.
606 for (i = 0, j = 19; i < 20; i += 2, j += 3) {
607 dev->xy_cur[i] = dev->data[j + 1];
608 dev->xy_cur[i + 1] = dev->data[j + 2];
611 for (i = 0, j = 1; i < 9; i += 2, j += 3) {
612 dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1];
613 dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2];
616 dbg_dump("sample", dev->xy_cur);
618 /* Just update the base values (i.e. touchpad in untouched state) */
619 if (dev->data[dev->info->datalen - 1] & ATP_STATUS_BASE_UPDATE) {
621 dprintk(KERN_DEBUG "appletouch: updated base values\n");
623 memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old));
627 for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) {
628 /* calculate the change */
629 dev->xy_acc[i] = dev->xy_cur[i] - dev->xy_old[i];
631 /* this is a round-robin value, so couple with that */
632 if (dev->xy_acc[i] > 127)
633 dev->xy_acc[i] -= 256;
635 if (dev->xy_acc[i] < -127)
636 dev->xy_acc[i] += 256;
638 /* prevent down drifting */
639 if (dev->xy_acc[i] < 0)
643 dbg_dump("accumulator", dev->xy_acc);
645 x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS,
646 dev->info->xfact, &x_z, &x_f);
647 y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS,
648 dev->info->yfact, &y_z, &y_f);
649 key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON;
652 if (dev->x_old != -1) {
653 x = (dev->x_old * 3 + x) >> 2;
654 y = (dev->y_old * 3 + y) >> 2;
659 printk(KERN_DEBUG "appletouch: X: %3d Y: %3d "
663 input_report_key(dev->input, BTN_TOUCH, 1);
664 input_report_abs(dev->input, ABS_X, x);
665 input_report_abs(dev->input, ABS_Y, y);
666 input_report_abs(dev->input, ABS_PRESSURE,
667 min(ATP_PRESSURE, x_z + y_z));
668 atp_report_fingers(dev->input, max(x_f, y_f));
673 } else if (!x && !y) {
675 dev->x_old = dev->y_old = -1;
676 input_report_key(dev->input, BTN_TOUCH, 0);
677 input_report_abs(dev->input, ABS_PRESSURE, 0);
678 atp_report_fingers(dev->input, 0);
680 /* reset the accumulator on release */
681 memset(dev->xy_acc, 0, sizeof(dev->xy_acc));
684 input_report_key(dev->input, BTN_LEFT, key);
685 input_sync(dev->input);
688 * Geysers 3/4 will continue to send packets continually after
689 * the first touch unless reinitialised. Do so if it's been
690 * idle for a while in order to avoid waking the kernel up
691 * several hundred times a second.
695 * Button must not be pressed when entering suspend,
696 * otherwise we will never release the button.
698 if (!x && !y && !key) {
700 if (dev->idlecount == 10) {
701 dev->x_old = dev->y_old = -1;
703 schedule_work(&dev->work);
704 /* Don't resubmit urb here, wait for reinit */
711 retval = usb_submit_urb(dev->urb, GFP_ATOMIC);
713 err("atp_complete: usb_submit_urb failed with result %d",
717 static int atp_open(struct input_dev *input)
719 struct atp *dev = input_get_drvdata(input);
721 if (usb_submit_urb(dev->urb, GFP_ATOMIC))
728 static void atp_close(struct input_dev *input)
730 struct atp *dev = input_get_drvdata(input);
732 usb_kill_urb(dev->urb);
733 cancel_work_sync(&dev->work);
737 static int atp_handle_geyser(struct atp *dev)
739 struct usb_device *udev = dev->udev;
741 if (dev->info != &fountain_info) {
742 /* switch to raw sensor mode */
743 if (atp_geyser_init(udev))
746 printk(KERN_INFO "appletouch: Geyser mode initialized.\n");
752 static int atp_probe(struct usb_interface *iface,
753 const struct usb_device_id *id)
756 struct input_dev *input_dev;
757 struct usb_device *udev = interface_to_usbdev(iface);
758 struct usb_host_interface *iface_desc;
759 struct usb_endpoint_descriptor *endpoint;
760 int int_in_endpointAddr = 0;
761 int i, error = -ENOMEM;
762 const struct atp_info *info = (const struct atp_info *)id->driver_info;
764 /* set up the endpoint information */
765 /* use only the first interrupt-in endpoint */
766 iface_desc = iface->cur_altsetting;
767 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
768 endpoint = &iface_desc->endpoint[i].desc;
769 if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) {
770 /* we found an interrupt in endpoint */
771 int_in_endpointAddr = endpoint->bEndpointAddress;
775 if (!int_in_endpointAddr) {
776 err("Could not find int-in endpoint");
780 /* allocate memory for our device state and initialize it */
781 dev = kzalloc(sizeof(struct atp), GFP_KERNEL);
782 input_dev = input_allocate_device();
783 if (!dev || !input_dev) {
784 err("Out of memory");
789 dev->input = input_dev;
791 dev->overflow_warned = false;
793 dev->urb = usb_alloc_urb(0, GFP_KERNEL);
797 dev->data = usb_buffer_alloc(dev->udev, dev->info->datalen, GFP_KERNEL,
798 &dev->urb->transfer_dma);
802 usb_fill_int_urb(dev->urb, udev,
803 usb_rcvintpipe(udev, int_in_endpointAddr),
804 dev->data, dev->info->datalen,
805 dev->info->callback, dev, 1);
807 error = atp_handle_geyser(dev);
809 goto err_free_buffer;
811 usb_make_path(udev, dev->phys, sizeof(dev->phys));
812 strlcat(dev->phys, "/input0", sizeof(dev->phys));
814 input_dev->name = "appletouch";
815 input_dev->phys = dev->phys;
816 usb_to_input_id(dev->udev, &input_dev->id);
817 input_dev->dev.parent = &iface->dev;
819 input_set_drvdata(input_dev, dev);
821 input_dev->open = atp_open;
822 input_dev->close = atp_close;
824 set_bit(EV_ABS, input_dev->evbit);
826 input_set_abs_params(input_dev, ABS_X, 0,
827 (dev->info->xsensors - 1) * dev->info->xfact - 1,
829 input_set_abs_params(input_dev, ABS_Y, 0,
830 (dev->info->ysensors - 1) * dev->info->yfact - 1,
832 input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 0, 0);
834 set_bit(EV_KEY, input_dev->evbit);
835 set_bit(BTN_TOUCH, input_dev->keybit);
836 set_bit(BTN_TOOL_FINGER, input_dev->keybit);
837 set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
838 set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
839 set_bit(BTN_LEFT, input_dev->keybit);
841 error = input_register_device(dev->input);
843 goto err_free_buffer;
845 /* save our data pointer in this interface device */
846 usb_set_intfdata(iface, dev);
848 INIT_WORK(&dev->work, atp_reinit);
853 usb_buffer_free(dev->udev, dev->info->datalen,
854 dev->data, dev->urb->transfer_dma);
856 usb_free_urb(dev->urb);
858 usb_set_intfdata(iface, NULL);
860 input_free_device(input_dev);
864 static void atp_disconnect(struct usb_interface *iface)
866 struct atp *dev = usb_get_intfdata(iface);
868 usb_set_intfdata(iface, NULL);
870 usb_kill_urb(dev->urb);
871 input_unregister_device(dev->input);
872 usb_buffer_free(dev->udev, dev->info->datalen,
873 dev->data, dev->urb->transfer_dma);
874 usb_free_urb(dev->urb);
877 printk(KERN_INFO "input: appletouch disconnected\n");
880 static int atp_recover(struct atp *dev)
884 error = atp_handle_geyser(dev);
888 if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
894 static int atp_suspend(struct usb_interface *iface, pm_message_t message)
896 struct atp *dev = usb_get_intfdata(iface);
898 usb_kill_urb(dev->urb);
902 static int atp_resume(struct usb_interface *iface)
904 struct atp *dev = usb_get_intfdata(iface);
906 if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC))
912 static int atp_reset_resume(struct usb_interface *iface)
914 struct atp *dev = usb_get_intfdata(iface);
916 return atp_recover(dev);
919 static struct usb_driver atp_driver = {
920 .name = "appletouch",
922 .disconnect = atp_disconnect,
923 .suspend = atp_suspend,
924 .resume = atp_resume,
925 .reset_resume = atp_reset_resume,
926 .id_table = atp_table,
929 static int __init atp_init(void)
931 return usb_register(&atp_driver);
934 static void __exit atp_exit(void)
936 usb_deregister(&atp_driver);
939 module_init(atp_init);
940 module_exit(atp_exit);