1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Apple "Magic" Wireless Mouse driver
5 * Copyright (c) 2010 Michael Poole <mdpoole@troilus.org>
6 * Copyright (c) 2010 Chase Douglas <chase.douglas@canonical.com>
12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14 #include <linux/device.h>
15 #include <linux/hid.h>
16 #include <linux/input/mt.h>
17 #include <linux/module.h>
18 #include <linux/slab.h>
19 #include <linux/workqueue.h>
23 static bool emulate_3button = true;
24 module_param(emulate_3button, bool, 0644);
25 MODULE_PARM_DESC(emulate_3button, "Emulate a middle button");
27 static int middle_button_start = -350;
28 static int middle_button_stop = +350;
30 static bool emulate_scroll_wheel = true;
31 module_param(emulate_scroll_wheel, bool, 0644);
32 MODULE_PARM_DESC(emulate_scroll_wheel, "Emulate a scroll wheel");
34 static unsigned int scroll_speed = 32;
35 static int param_set_scroll_speed(const char *val,
36 const struct kernel_param *kp) {
38 if (!val || kstrtoul(val, 0, &speed) || speed > 63)
43 module_param_call(scroll_speed, param_set_scroll_speed, param_get_uint, &scroll_speed, 0644);
44 MODULE_PARM_DESC(scroll_speed, "Scroll speed, value from 0 (slow) to 63 (fast)");
46 static bool scroll_acceleration = false;
47 module_param(scroll_acceleration, bool, 0644);
48 MODULE_PARM_DESC(scroll_acceleration, "Accelerate sequential scroll events");
50 static bool report_undeciphered;
51 module_param(report_undeciphered, bool, 0644);
52 MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state field using a MSC_RAW event");
54 #define TRACKPAD_REPORT_ID 0x28
55 #define TRACKPAD2_USB_REPORT_ID 0x02
56 #define TRACKPAD2_BT_REPORT_ID 0x31
57 #define MOUSE_REPORT_ID 0x29
58 #define MOUSE2_REPORT_ID 0x12
59 #define DOUBLE_REPORT_ID 0xf7
60 /* These definitions are not precise, but they're close enough. (Bits
61 * 0x03 seem to indicate the aspect ratio of the touch, bits 0x70 seem
62 * to be some kind of bit mask -- 0x20 may be a near-field reading,
63 * and 0x40 is actual contact, and 0x10 may be a start/stop or change
66 #define TOUCH_STATE_MASK 0xf0
67 #define TOUCH_STATE_NONE 0x00
68 #define TOUCH_STATE_START 0x30
69 #define TOUCH_STATE_DRAG 0x40
71 #define SCROLL_ACCEL_DEFAULT 7
73 /* Touch surface information. Dimension is in hundredths of a mm, min and max
75 #define MOUSE_DIMENSION_X (float)9056
76 #define MOUSE_MIN_X -1100
77 #define MOUSE_MAX_X 1258
78 #define MOUSE_RES_X ((MOUSE_MAX_X - MOUSE_MIN_X) / (MOUSE_DIMENSION_X / 100))
79 #define MOUSE_DIMENSION_Y (float)5152
80 #define MOUSE_MIN_Y -1589
81 #define MOUSE_MAX_Y 2047
82 #define MOUSE_RES_Y ((MOUSE_MAX_Y - MOUSE_MIN_Y) / (MOUSE_DIMENSION_Y / 100))
84 #define TRACKPAD_DIMENSION_X (float)13000
85 #define TRACKPAD_MIN_X -2909
86 #define TRACKPAD_MAX_X 3167
87 #define TRACKPAD_RES_X \
88 ((TRACKPAD_MAX_X - TRACKPAD_MIN_X) / (TRACKPAD_DIMENSION_X / 100))
89 #define TRACKPAD_DIMENSION_Y (float)11000
90 #define TRACKPAD_MIN_Y -2456
91 #define TRACKPAD_MAX_Y 2565
92 #define TRACKPAD_RES_Y \
93 ((TRACKPAD_MAX_Y - TRACKPAD_MIN_Y) / (TRACKPAD_DIMENSION_Y / 100))
95 #define TRACKPAD2_DIMENSION_X (float)16000
96 #define TRACKPAD2_MIN_X -3678
97 #define TRACKPAD2_MAX_X 3934
98 #define TRACKPAD2_RES_X \
99 ((TRACKPAD2_MAX_X - TRACKPAD2_MIN_X) / (TRACKPAD2_DIMENSION_X / 100))
100 #define TRACKPAD2_DIMENSION_Y (float)11490
101 #define TRACKPAD2_MIN_Y -2478
102 #define TRACKPAD2_MAX_Y 2587
103 #define TRACKPAD2_RES_Y \
104 ((TRACKPAD2_MAX_Y - TRACKPAD2_MIN_Y) / (TRACKPAD2_DIMENSION_Y / 100))
107 * struct magicmouse_sc - Tracks Magic Mouse-specific data.
108 * @input: Input device through which we report events.
109 * @quirks: Currently unused.
110 * @ntouches: Number of touches in most recent touch report.
111 * @scroll_accel: Number of consecutive scroll motions.
112 * @scroll_jiffies: Time of last scroll motion.
113 * @touches: Most recent data for a touch, indexed by tracking ID.
114 * @tracking_ids: Mapping of current touch input data to @touches.
116 struct magicmouse_sc {
117 struct input_dev *input;
118 unsigned long quirks;
122 unsigned long scroll_jiffies;
131 int tracking_ids[16];
133 struct hid_device *hdev;
134 struct delayed_work work;
137 static int magicmouse_firm_touch(struct magicmouse_sc *msc)
142 /* If there is only one "firm" touch, set touch to its
145 for (ii = 0; ii < msc->ntouches; ii++) {
146 int idx = msc->tracking_ids[ii];
147 if (msc->touches[idx].size < 8) {
148 /* Ignore this touch. */
149 } else if (touch >= 0) {
160 static void magicmouse_emit_buttons(struct magicmouse_sc *msc, int state)
162 int last_state = test_bit(BTN_LEFT, msc->input->key) << 0 |
163 test_bit(BTN_RIGHT, msc->input->key) << 1 |
164 test_bit(BTN_MIDDLE, msc->input->key) << 2;
166 if (emulate_3button) {
169 /* If some button was pressed before, keep it held
170 * down. Otherwise, if there's exactly one firm
171 * touch, use that to override the mouse's guess.
174 /* The button was released. */
175 } else if (last_state != 0) {
177 } else if ((id = magicmouse_firm_touch(msc)) >= 0) {
178 int x = msc->touches[id].x;
179 if (x < middle_button_start)
181 else if (x > middle_button_stop)
185 } /* else: we keep the mouse's guess */
187 input_report_key(msc->input, BTN_MIDDLE, state & 4);
190 input_report_key(msc->input, BTN_LEFT, state & 1);
191 input_report_key(msc->input, BTN_RIGHT, state & 2);
193 if (state != last_state)
194 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
197 static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tdata)
199 struct input_dev *input = msc->input;
200 int id, x, y, size, orientation, touch_major, touch_minor, state, down;
203 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
204 input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2) {
205 id = (tdata[6] << 2 | tdata[5] >> 6) & 0xf;
206 x = (tdata[1] << 28 | tdata[0] << 20) >> 20;
207 y = -((tdata[2] << 24 | tdata[1] << 16) >> 20);
208 size = tdata[5] & 0x3f;
209 orientation = (tdata[6] >> 2) - 32;
210 touch_major = tdata[3];
211 touch_minor = tdata[4];
212 state = tdata[7] & TOUCH_STATE_MASK;
213 down = state != TOUCH_STATE_NONE;
214 } else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
216 x = (tdata[1] << 27 | tdata[0] << 19) >> 19;
217 y = -((tdata[3] << 30 | tdata[2] << 22 | tdata[1] << 14) >> 19);
219 orientation = (tdata[8] >> 5) - 4;
220 touch_major = tdata[4];
221 touch_minor = tdata[5];
223 state = tdata[3] & 0xC0;
224 down = state == 0x80;
225 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
226 id = (tdata[7] << 2 | tdata[6] >> 6) & 0xf;
227 x = (tdata[1] << 27 | tdata[0] << 19) >> 19;
228 y = -((tdata[3] << 30 | tdata[2] << 22 | tdata[1] << 14) >> 19);
229 size = tdata[6] & 0x3f;
230 orientation = (tdata[7] >> 2) - 32;
231 touch_major = tdata[4];
232 touch_minor = tdata[5];
233 state = tdata[8] & TOUCH_STATE_MASK;
234 down = state != TOUCH_STATE_NONE;
237 /* Store tracking ID and other fields. */
238 msc->tracking_ids[raw_id] = id;
239 msc->touches[id].x = x;
240 msc->touches[id].y = y;
241 msc->touches[id].size = size;
243 /* If requested, emulate a scroll wheel by detecting small
244 * vertical touch motions.
246 if (emulate_scroll_wheel && (input->id.product !=
247 USB_DEVICE_ID_APPLE_MAGICTRACKPAD2)) {
248 unsigned long now = jiffies;
249 int step_x = msc->touches[id].scroll_x - x;
250 int step_y = msc->touches[id].scroll_y - y;
252 /* Calculate and apply the scroll motion. */
254 case TOUCH_STATE_START:
255 msc->touches[id].scroll_x = x;
256 msc->touches[id].scroll_y = y;
258 /* Reset acceleration after half a second. */
259 if (scroll_acceleration && time_before(now,
260 msc->scroll_jiffies + HZ / 2))
261 msc->scroll_accel = max_t(int,
262 msc->scroll_accel - 1, 1);
264 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
267 case TOUCH_STATE_DRAG:
268 step_x /= (64 - (int)scroll_speed) * msc->scroll_accel;
270 msc->touches[id].scroll_x -= step_x *
271 (64 - scroll_speed) * msc->scroll_accel;
272 msc->scroll_jiffies = now;
273 input_report_rel(input, REL_HWHEEL, -step_x);
276 step_y /= (64 - (int)scroll_speed) * msc->scroll_accel;
278 msc->touches[id].scroll_y -= step_y *
279 (64 - scroll_speed) * msc->scroll_accel;
280 msc->scroll_jiffies = now;
281 input_report_rel(input, REL_WHEEL, step_y);
290 input_mt_slot(input, id);
291 input_mt_report_slot_state(input, MT_TOOL_FINGER, down);
293 /* Generate the input events for this touch. */
295 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major << 2);
296 input_report_abs(input, ABS_MT_TOUCH_MINOR, touch_minor << 2);
297 input_report_abs(input, ABS_MT_ORIENTATION, -orientation);
298 input_report_abs(input, ABS_MT_POSITION_X, x);
299 input_report_abs(input, ABS_MT_POSITION_Y, y);
301 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2)
302 input_report_abs(input, ABS_MT_PRESSURE, pressure);
304 if (report_undeciphered) {
305 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
306 input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2)
307 input_event(input, EV_MSC, MSC_RAW, tdata[7]);
308 else if (input->id.product !=
309 USB_DEVICE_ID_APPLE_MAGICTRACKPAD2)
310 input_event(input, EV_MSC, MSC_RAW, tdata[8]);
315 static int magicmouse_raw_event(struct hid_device *hdev,
316 struct hid_report *report, u8 *data, int size)
318 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
319 struct input_dev *input = msc->input;
320 int x = 0, y = 0, ii, clicks = 0, npoints;
323 case TRACKPAD_REPORT_ID:
324 case TRACKPAD2_BT_REPORT_ID:
325 /* Expect four bytes of prefix, and N*9 bytes of touch data. */
326 if (size < 4 || ((size - 4) % 9) != 0)
328 npoints = (size - 4) / 9;
330 hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n",
335 for (ii = 0; ii < npoints; ii++)
336 magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
340 /* The following bits provide a device specific timestamp. They
343 * ts = data[1] >> 6 | data[2] << 2 | data[3] << 10;
346 case TRACKPAD2_USB_REPORT_ID:
347 /* Expect twelve bytes of prefix and N*9 bytes of touch data. */
348 if (size < 12 || ((size - 12) % 9) != 0)
350 npoints = (size - 12) / 9;
352 hid_warn(hdev, "invalid size value (%d) for TRACKPAD2_USB_REPORT_ID\n",
357 for (ii = 0; ii < npoints; ii++)
358 magicmouse_emit_touch(msc, ii, data + ii * 9 + 12);
362 case MOUSE_REPORT_ID:
363 /* Expect six bytes of prefix, and N*8 bytes of touch data. */
364 if (size < 6 || ((size - 6) % 8) != 0)
366 npoints = (size - 6) / 8;
368 hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n",
373 for (ii = 0; ii < npoints; ii++)
374 magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
376 /* When emulating three-button mode, it is important
377 * to have the current touch information before
378 * generating a click event.
380 x = (int)(((data[3] & 0x0c) << 28) | (data[1] << 22)) >> 22;
381 y = (int)(((data[3] & 0x30) << 26) | (data[2] << 22)) >> 22;
384 /* The following bits provide a device specific timestamp. They
387 * ts = data[3] >> 6 | data[4] << 2 | data[5] << 10;
390 case MOUSE2_REPORT_ID:
391 /* Size is either 8 or (14 + 8 * N) */
392 if (size != 8 && (size < 14 || (size - 14) % 8 != 0))
394 npoints = (size - 14) / 8;
396 hid_warn(hdev, "invalid size value (%d) for MOUSE2_REPORT_ID\n",
401 for (ii = 0; ii < npoints; ii++)
402 magicmouse_emit_touch(msc, ii, data + ii * 8 + 14);
404 /* When emulating three-button mode, it is important
405 * to have the current touch information before
406 * generating a click event.
408 x = (int)((data[3] << 24) | (data[2] << 16)) >> 16;
409 y = (int)((data[5] << 24) | (data[4] << 16)) >> 16;
412 /* The following bits provide a device specific timestamp. They
415 * ts = data[11] >> 6 | data[12] << 2 | data[13] << 10;
418 case DOUBLE_REPORT_ID:
419 /* Sometimes the trackpad sends two touch reports in one
422 magicmouse_raw_event(hdev, report, data + 2, data[1]);
423 magicmouse_raw_event(hdev, report, data + 2 + data[1],
430 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
431 input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2) {
432 magicmouse_emit_buttons(msc, clicks & 3);
433 input_report_rel(input, REL_X, x);
434 input_report_rel(input, REL_Y, y);
435 } else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
436 input_mt_sync_frame(input);
437 input_report_key(input, BTN_MOUSE, clicks & 1);
438 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
439 input_report_key(input, BTN_MOUSE, clicks & 1);
440 input_mt_report_pointer_emulation(input, true);
447 static int magicmouse_event(struct hid_device *hdev, struct hid_field *field,
448 struct hid_usage *usage, __s32 value)
450 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
451 if (msc->input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 &&
452 field->report->id == MOUSE2_REPORT_ID) {
454 * magic_mouse_raw_event has done all the work. Skip hidinput.
456 * Specifically, hidinput may modify BTN_LEFT and BTN_RIGHT,
457 * breaking emulate_3button.
464 static int magicmouse_setup_input(struct input_dev *input, struct hid_device *hdev)
469 __set_bit(EV_KEY, input->evbit);
471 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
472 input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2) {
473 __set_bit(BTN_LEFT, input->keybit);
474 __set_bit(BTN_RIGHT, input->keybit);
476 __set_bit(BTN_MIDDLE, input->keybit);
478 __set_bit(EV_REL, input->evbit);
479 __set_bit(REL_X, input->relbit);
480 __set_bit(REL_Y, input->relbit);
481 if (emulate_scroll_wheel) {
482 __set_bit(REL_WHEEL, input->relbit);
483 __set_bit(REL_HWHEEL, input->relbit);
485 } else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
486 /* setting the device name to ensure the same driver settings
487 * get loaded, whether connected through bluetooth or USB
489 input->name = "Apple Inc. Magic Trackpad 2";
491 __clear_bit(EV_MSC, input->evbit);
492 __clear_bit(BTN_0, input->keybit);
493 __clear_bit(BTN_RIGHT, input->keybit);
494 __clear_bit(BTN_MIDDLE, input->keybit);
495 __set_bit(BTN_MOUSE, input->keybit);
496 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
497 __set_bit(BTN_TOOL_FINGER, input->keybit);
499 mt_flags = INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
501 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
502 /* input->keybit is initialized with incorrect button info
503 * for Magic Trackpad. There really is only one physical
504 * button (BTN_LEFT == BTN_MOUSE). Make sure we don't
505 * advertise buttons that don't exist...
507 __clear_bit(BTN_RIGHT, input->keybit);
508 __clear_bit(BTN_MIDDLE, input->keybit);
509 __set_bit(BTN_MOUSE, input->keybit);
510 __set_bit(BTN_TOOL_FINGER, input->keybit);
511 __set_bit(BTN_TOOL_DOUBLETAP, input->keybit);
512 __set_bit(BTN_TOOL_TRIPLETAP, input->keybit);
513 __set_bit(BTN_TOOL_QUADTAP, input->keybit);
514 __set_bit(BTN_TOOL_QUINTTAP, input->keybit);
515 __set_bit(BTN_TOUCH, input->keybit);
516 __set_bit(INPUT_PROP_POINTER, input->propbit);
517 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
521 __set_bit(EV_ABS, input->evbit);
523 error = input_mt_init_slots(input, 16, mt_flags);
526 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255 << 2,
528 input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 255 << 2,
531 /* Note: Touch Y position from the device is inverted relative
532 * to how pointer motion is reported (and relative to how USB
533 * HID recommends the coordinates work). This driver keeps
534 * the origin at the same position, and just uses the additive
535 * inverse of the reported Y.
537 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
538 input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2) {
539 input_set_abs_params(input, ABS_MT_ORIENTATION, -31, 32, 1, 0);
540 input_set_abs_params(input, ABS_MT_POSITION_X,
541 MOUSE_MIN_X, MOUSE_MAX_X, 4, 0);
542 input_set_abs_params(input, ABS_MT_POSITION_Y,
543 MOUSE_MIN_Y, MOUSE_MAX_Y, 4, 0);
545 input_abs_set_res(input, ABS_MT_POSITION_X,
547 input_abs_set_res(input, ABS_MT_POSITION_Y,
549 } else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
550 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 253, 0, 0);
551 input_set_abs_params(input, ABS_PRESSURE, 0, 253, 0, 0);
552 input_set_abs_params(input, ABS_MT_ORIENTATION, -3, 4, 0, 0);
553 input_set_abs_params(input, ABS_X, TRACKPAD2_MIN_X,
554 TRACKPAD2_MAX_X, 0, 0);
555 input_set_abs_params(input, ABS_Y, TRACKPAD2_MIN_Y,
556 TRACKPAD2_MAX_Y, 0, 0);
557 input_set_abs_params(input, ABS_MT_POSITION_X,
558 TRACKPAD2_MIN_X, TRACKPAD2_MAX_X, 0, 0);
559 input_set_abs_params(input, ABS_MT_POSITION_Y,
560 TRACKPAD2_MIN_Y, TRACKPAD2_MAX_Y, 0, 0);
562 input_abs_set_res(input, ABS_X, TRACKPAD2_RES_X);
563 input_abs_set_res(input, ABS_Y, TRACKPAD2_RES_Y);
564 input_abs_set_res(input, ABS_MT_POSITION_X, TRACKPAD2_RES_X);
565 input_abs_set_res(input, ABS_MT_POSITION_Y, TRACKPAD2_RES_Y);
566 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
567 input_set_abs_params(input, ABS_MT_ORIENTATION, -31, 32, 1, 0);
568 input_set_abs_params(input, ABS_X, TRACKPAD_MIN_X,
569 TRACKPAD_MAX_X, 4, 0);
570 input_set_abs_params(input, ABS_Y, TRACKPAD_MIN_Y,
571 TRACKPAD_MAX_Y, 4, 0);
572 input_set_abs_params(input, ABS_MT_POSITION_X,
573 TRACKPAD_MIN_X, TRACKPAD_MAX_X, 4, 0);
574 input_set_abs_params(input, ABS_MT_POSITION_Y,
575 TRACKPAD_MIN_Y, TRACKPAD_MAX_Y, 4, 0);
577 input_abs_set_res(input, ABS_X, TRACKPAD_RES_X);
578 input_abs_set_res(input, ABS_Y, TRACKPAD_RES_Y);
579 input_abs_set_res(input, ABS_MT_POSITION_X,
581 input_abs_set_res(input, ABS_MT_POSITION_Y,
585 input_set_events_per_packet(input, 60);
587 if (report_undeciphered &&
588 input->id.product != USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
589 __set_bit(EV_MSC, input->evbit);
590 __set_bit(MSC_RAW, input->mscbit);
594 * hid-input may mark device as using autorepeat, but neither
595 * the trackpad, nor the mouse actually want it.
597 __clear_bit(EV_REP, input->evbit);
602 static int magicmouse_input_mapping(struct hid_device *hdev,
603 struct hid_input *hi, struct hid_field *field,
604 struct hid_usage *usage, unsigned long **bit, int *max)
606 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
609 msc->input = hi->input;
611 /* Magic Trackpad does not give relative data after switching to MT */
612 if ((hi->input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD ||
613 hi->input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) &&
614 field->flags & HID_MAIN_ITEM_RELATIVE)
620 static int magicmouse_input_configured(struct hid_device *hdev,
621 struct hid_input *hi)
624 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
627 ret = magicmouse_setup_input(msc->input, hdev);
629 hid_err(hdev, "magicmouse setup input failed (%d)\n", ret);
630 /* clean msc->input to notify probe() of the failure */
638 static int magicmouse_enable_multitouch(struct hid_device *hdev)
641 const u8 feature_mt[] = { 0xD7, 0x01 };
642 const u8 feature_mt_mouse2[] = { 0xF1, 0x02, 0x01 };
643 const u8 feature_mt_trackpad2_usb[] = { 0x02, 0x01 };
644 const u8 feature_mt_trackpad2_bt[] = { 0xF1, 0x02, 0x01 };
649 if (hdev->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
650 if (hdev->vendor == BT_VENDOR_ID_APPLE) {
651 feature_size = sizeof(feature_mt_trackpad2_bt);
652 feature = feature_mt_trackpad2_bt;
653 } else { /* USB_VENDOR_ID_APPLE */
654 feature_size = sizeof(feature_mt_trackpad2_usb);
655 feature = feature_mt_trackpad2_usb;
657 } else if (hdev->product == USB_DEVICE_ID_APPLE_MAGICMOUSE2) {
658 feature_size = sizeof(feature_mt_mouse2);
659 feature = feature_mt_mouse2;
661 feature_size = sizeof(feature_mt);
662 feature = feature_mt;
665 buf = kmemdup(feature, feature_size, GFP_KERNEL);
669 ret = hid_hw_raw_request(hdev, buf[0], buf, feature_size,
670 HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
675 static void magicmouse_enable_mt_work(struct work_struct *work)
677 struct magicmouse_sc *msc =
678 container_of(work, struct magicmouse_sc, work.work);
681 ret = magicmouse_enable_multitouch(msc->hdev);
683 hid_err(msc->hdev, "unable to request touch data (%d)\n", ret);
686 static int magicmouse_probe(struct hid_device *hdev,
687 const struct hid_device_id *id)
689 struct magicmouse_sc *msc;
690 struct hid_report *report;
693 if (id->vendor == USB_VENDOR_ID_APPLE &&
694 id->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 &&
695 hdev->type != HID_TYPE_USBMOUSE)
698 msc = devm_kzalloc(&hdev->dev, sizeof(*msc), GFP_KERNEL);
700 hid_err(hdev, "can't alloc magicmouse descriptor\n");
704 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
706 INIT_DEFERRABLE_WORK(&msc->work, magicmouse_enable_mt_work);
708 msc->quirks = id->driver_data;
709 hid_set_drvdata(hdev, msc);
711 ret = hid_parse(hdev);
713 hid_err(hdev, "magicmouse hid parse failed\n");
717 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
719 hid_err(hdev, "magicmouse hw start failed\n");
724 hid_err(hdev, "magicmouse input not registered\n");
729 if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE)
730 report = hid_register_report(hdev, HID_INPUT_REPORT,
732 else if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE2)
733 report = hid_register_report(hdev, HID_INPUT_REPORT,
734 MOUSE2_REPORT_ID, 0);
735 else if (id->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
736 if (id->vendor == BT_VENDOR_ID_APPLE)
737 report = hid_register_report(hdev, HID_INPUT_REPORT,
738 TRACKPAD2_BT_REPORT_ID, 0);
739 else /* USB_VENDOR_ID_APPLE */
740 report = hid_register_report(hdev, HID_INPUT_REPORT,
741 TRACKPAD2_USB_REPORT_ID, 0);
742 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
743 report = hid_register_report(hdev, HID_INPUT_REPORT,
744 TRACKPAD_REPORT_ID, 0);
745 report = hid_register_report(hdev, HID_INPUT_REPORT,
746 DOUBLE_REPORT_ID, 0);
750 hid_err(hdev, "unable to register touch report\n");
757 * Some devices repond with 'invalid report id' when feature
758 * report switching it into multitouch mode is sent to it.
760 * This results in -EIO from the _raw low-level transport callback,
761 * but there seems to be no other way of switching the mode.
762 * Thus the super-ugly hacky success check below.
764 ret = magicmouse_enable_multitouch(hdev);
765 if (ret != -EIO && ret < 0) {
766 hid_err(hdev, "unable to request touch data (%d)\n", ret);
769 if (ret == -EIO && id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE2) {
770 schedule_delayed_work(&msc->work, msecs_to_jiffies(500));
779 static void magicmouse_remove(struct hid_device *hdev)
781 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
784 cancel_delayed_work_sync(&msc->work);
789 static const struct hid_device_id magic_mice[] = {
790 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
791 USB_DEVICE_ID_APPLE_MAGICMOUSE), .driver_data = 0 },
792 { HID_BLUETOOTH_DEVICE(BT_VENDOR_ID_APPLE,
793 USB_DEVICE_ID_APPLE_MAGICMOUSE2), .driver_data = 0 },
794 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
795 USB_DEVICE_ID_APPLE_MAGICTRACKPAD), .driver_data = 0 },
796 { HID_BLUETOOTH_DEVICE(BT_VENDOR_ID_APPLE,
797 USB_DEVICE_ID_APPLE_MAGICTRACKPAD2), .driver_data = 0 },
798 { HID_USB_DEVICE(USB_VENDOR_ID_APPLE,
799 USB_DEVICE_ID_APPLE_MAGICTRACKPAD2), .driver_data = 0 },
802 MODULE_DEVICE_TABLE(hid, magic_mice);
804 static struct hid_driver magicmouse_driver = {
805 .name = "magicmouse",
806 .id_table = magic_mice,
807 .probe = magicmouse_probe,
808 .remove = magicmouse_remove,
809 .raw_event = magicmouse_raw_event,
810 .event = magicmouse_event,
811 .input_mapping = magicmouse_input_mapping,
812 .input_configured = magicmouse_input_configured,
814 module_hid_driver(magicmouse_driver);
816 MODULE_LICENSE("GPL");