blob: 25ddf3e3aec641fd4d883843e87e59bc0e3b0c51 [file] [log] [blame]
Michael Poole128537c2010-02-06 12:24:36 -05001/*
2 * Apple "Magic" Wireless Mouse driver
3 *
4 * Copyright (c) 2010 Michael Poole <mdpoole@troilus.org>
Chase Douglasa4622302010-08-31 21:56:23 -04005 * Copyright (c) 2010 Chase Douglas <chase.douglas@canonical.com>
Michael Poole128537c2010-02-06 12:24:36 -05006 */
7
8/*
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 */
14
Joe Perches4291ee32010-12-09 19:29:03 -080015#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16
Michael Poole128537c2010-02-06 12:24:36 -050017#include <linux/device.h>
18#include <linux/hid.h>
Yufeng Shena6d1bc12012-07-04 12:15:43 -040019#include <linux/input/mt.h>
Michael Poole128537c2010-02-06 12:24:36 -050020#include <linux/module.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090021#include <linux/slab.h>
Michael Poole128537c2010-02-06 12:24:36 -050022#include <linux/usb.h>
23
24#include "hid-ids.h"
25
Michael Poole71b38bd2010-02-11 00:32:57 -050026static bool emulate_3button = true;
Michael Poole128537c2010-02-06 12:24:36 -050027module_param(emulate_3button, bool, 0644);
28MODULE_PARM_DESC(emulate_3button, "Emulate a middle button");
29
30static int middle_button_start = -350;
31static int middle_button_stop = +350;
32
Michael Poole71b38bd2010-02-11 00:32:57 -050033static bool emulate_scroll_wheel = true;
Michael Poole128537c2010-02-06 12:24:36 -050034module_param(emulate_scroll_wheel, bool, 0644);
35MODULE_PARM_DESC(emulate_scroll_wheel, "Emulate a scroll wheel");
36
Chase Douglas0b778e72010-06-20 21:32:30 -040037static unsigned int scroll_speed = 32;
38static int param_set_scroll_speed(const char *val, struct kernel_param *kp) {
39 unsigned long speed;
40 if (!val || strict_strtoul(val, 0, &speed) || speed > 63)
41 return -EINVAL;
42 scroll_speed = speed;
43 return 0;
44}
45module_param_call(scroll_speed, param_set_scroll_speed, param_get_uint, &scroll_speed, 0644);
46MODULE_PARM_DESC(scroll_speed, "Scroll speed, value from 0 (slow) to 63 (fast)");
47
Chase Douglas9846f352010-06-02 10:28:27 -040048static bool scroll_acceleration = false;
49module_param(scroll_acceleration, bool, 0644);
50MODULE_PARM_DESC(scroll_acceleration, "Accelerate sequential scroll events");
51
Michael Poole71b38bd2010-02-11 00:32:57 -050052static bool report_undeciphered;
Michael Poole128537c2010-02-06 12:24:36 -050053module_param(report_undeciphered, bool, 0644);
54MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state field using a MSC_RAW event");
55
Chase Douglasa4622302010-08-31 21:56:23 -040056#define TRACKPAD_REPORT_ID 0x28
57#define MOUSE_REPORT_ID 0x29
58#define DOUBLE_REPORT_ID 0xf7
Michael Poole128537c2010-02-06 12:24:36 -050059/* These definitions are not precise, but they're close enough. (Bits
60 * 0x03 seem to indicate the aspect ratio of the touch, bits 0x70 seem
61 * to be some kind of bit mask -- 0x20 may be a near-field reading,
62 * and 0x40 is actual contact, and 0x10 may be a start/stop or change
63 * indication.)
64 */
65#define TOUCH_STATE_MASK 0xf0
66#define TOUCH_STATE_NONE 0x00
67#define TOUCH_STATE_START 0x30
68#define TOUCH_STATE_DRAG 0x40
69
Chase Douglas0b778e72010-06-20 21:32:30 -040070#define SCROLL_ACCEL_DEFAULT 7
71
Chase Douglas4f6fdf02011-08-05 09:16:57 -070072/* Touch surface information. Dimension is in hundredths of a mm, min and max
73 * are in units. */
74#define MOUSE_DIMENSION_X (float)9056
75#define MOUSE_MIN_X -1100
76#define MOUSE_MAX_X 1258
77#define MOUSE_RES_X ((MOUSE_MAX_X - MOUSE_MIN_X) / (MOUSE_DIMENSION_X / 100))
78#define MOUSE_DIMENSION_Y (float)5152
79#define MOUSE_MIN_Y -1589
80#define MOUSE_MAX_Y 2047
81#define MOUSE_RES_Y ((MOUSE_MAX_Y - MOUSE_MIN_Y) / (MOUSE_DIMENSION_Y / 100))
82
83#define TRACKPAD_DIMENSION_X (float)13000
84#define TRACKPAD_MIN_X -2909
85#define TRACKPAD_MAX_X 3167
86#define TRACKPAD_RES_X \
87 ((TRACKPAD_MAX_X - TRACKPAD_MIN_X) / (TRACKPAD_DIMENSION_X / 100))
88#define TRACKPAD_DIMENSION_Y (float)11000
89#define TRACKPAD_MIN_Y -2456
90#define TRACKPAD_MAX_Y 2565
91#define TRACKPAD_RES_Y \
92 ((TRACKPAD_MAX_Y - TRACKPAD_MIN_Y) / (TRACKPAD_DIMENSION_Y / 100))
93
Michael Poole128537c2010-02-06 12:24:36 -050094/**
95 * struct magicmouse_sc - Tracks Magic Mouse-specific data.
96 * @input: Input device through which we report events.
97 * @quirks: Currently unused.
Michael Poole128537c2010-02-06 12:24:36 -050098 * @ntouches: Number of touches in most recent touch report.
99 * @scroll_accel: Number of consecutive scroll motions.
100 * @scroll_jiffies: Time of last scroll motion.
101 * @touches: Most recent data for a touch, indexed by tracking ID.
102 * @tracking_ids: Mapping of current touch input data to @touches.
103 */
104struct magicmouse_sc {
105 struct input_dev *input;
106 unsigned long quirks;
107
Michael Poole128537c2010-02-06 12:24:36 -0500108 int ntouches;
109 int scroll_accel;
110 unsigned long scroll_jiffies;
111
112 struct {
113 short x;
114 short y;
Chase Douglasc0426682010-06-20 21:32:31 -0400115 short scroll_x;
Michael Poole128537c2010-02-06 12:24:36 -0500116 short scroll_y;
117 u8 size;
118 } touches[16];
119 int tracking_ids[16];
120};
121
122static int magicmouse_firm_touch(struct magicmouse_sc *msc)
123{
124 int touch = -1;
125 int ii;
126
127 /* If there is only one "firm" touch, set touch to its
128 * tracking ID.
129 */
130 for (ii = 0; ii < msc->ntouches; ii++) {
131 int idx = msc->tracking_ids[ii];
132 if (msc->touches[idx].size < 8) {
133 /* Ignore this touch. */
134 } else if (touch >= 0) {
135 touch = -1;
136 break;
137 } else {
138 touch = idx;
139 }
140 }
141
142 return touch;
143}
144
145static void magicmouse_emit_buttons(struct magicmouse_sc *msc, int state)
146{
Michael Poole71b38bd2010-02-11 00:32:57 -0500147 int last_state = test_bit(BTN_LEFT, msc->input->key) << 0 |
148 test_bit(BTN_RIGHT, msc->input->key) << 1 |
149 test_bit(BTN_MIDDLE, msc->input->key) << 2;
Michael Poole128537c2010-02-06 12:24:36 -0500150
151 if (emulate_3button) {
152 int id;
153
154 /* If some button was pressed before, keep it held
155 * down. Otherwise, if there's exactly one firm
156 * touch, use that to override the mouse's guess.
157 */
158 if (state == 0) {
159 /* The button was released. */
160 } else if (last_state != 0) {
161 state = last_state;
162 } else if ((id = magicmouse_firm_touch(msc)) >= 0) {
163 int x = msc->touches[id].x;
164 if (x < middle_button_start)
165 state = 1;
166 else if (x > middle_button_stop)
167 state = 2;
168 else
169 state = 4;
170 } /* else: we keep the mouse's guess */
171
172 input_report_key(msc->input, BTN_MIDDLE, state & 4);
173 }
174
175 input_report_key(msc->input, BTN_LEFT, state & 1);
176 input_report_key(msc->input, BTN_RIGHT, state & 2);
177
178 if (state != last_state)
Chase Douglas0b778e72010-06-20 21:32:30 -0400179 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
Michael Poole128537c2010-02-06 12:24:36 -0500180}
181
182static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tdata)
183{
184 struct input_dev *input = msc->input;
Chase Douglasa4622302010-08-31 21:56:23 -0400185 int id, x, y, size, orientation, touch_major, touch_minor, state, down;
186
187 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
188 id = (tdata[6] << 2 | tdata[5] >> 6) & 0xf;
189 x = (tdata[1] << 28 | tdata[0] << 20) >> 20;
190 y = -((tdata[2] << 24 | tdata[1] << 16) >> 20);
191 size = tdata[5] & 0x3f;
192 orientation = (tdata[6] >> 2) - 32;
193 touch_major = tdata[3];
194 touch_minor = tdata[4];
195 state = tdata[7] & TOUCH_STATE_MASK;
196 down = state != TOUCH_STATE_NONE;
197 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
198 id = (tdata[7] << 2 | tdata[6] >> 6) & 0xf;
199 x = (tdata[1] << 27 | tdata[0] << 19) >> 19;
200 y = -((tdata[3] << 30 | tdata[2] << 22 | tdata[1] << 14) >> 19);
201 size = tdata[6] & 0x3f;
202 orientation = (tdata[7] >> 2) - 32;
203 touch_major = tdata[4];
204 touch_minor = tdata[5];
205 state = tdata[8] & TOUCH_STATE_MASK;
206 down = state != TOUCH_STATE_NONE;
207 }
Michael Poole128537c2010-02-06 12:24:36 -0500208
209 /* Store tracking ID and other fields. */
210 msc->tracking_ids[raw_id] = id;
211 msc->touches[id].x = x;
212 msc->touches[id].y = y;
Chase Douglas6de048b2010-08-31 21:56:20 -0400213 msc->touches[id].size = size;
Michael Poole128537c2010-02-06 12:24:36 -0500214
215 /* If requested, emulate a scroll wheel by detecting small
Chase Douglasef566d32010-06-02 10:28:25 -0400216 * vertical touch motions.
Michael Poole128537c2010-02-06 12:24:36 -0500217 */
Chase Douglasef566d32010-06-02 10:28:25 -0400218 if (emulate_scroll_wheel) {
Michael Poole128537c2010-02-06 12:24:36 -0500219 unsigned long now = jiffies;
Chase Douglasc0426682010-06-20 21:32:31 -0400220 int step_x = msc->touches[id].scroll_x - x;
221 int step_y = msc->touches[id].scroll_y - y;
Michael Poole128537c2010-02-06 12:24:36 -0500222
Michael Poole128537c2010-02-06 12:24:36 -0500223 /* Calculate and apply the scroll motion. */
Chase Douglas6de048b2010-08-31 21:56:20 -0400224 switch (state) {
Michael Poole128537c2010-02-06 12:24:36 -0500225 case TOUCH_STATE_START:
Chase Douglasc0426682010-06-20 21:32:31 -0400226 msc->touches[id].scroll_x = x;
Michael Poole128537c2010-02-06 12:24:36 -0500227 msc->touches[id].scroll_y = y;
Chase Douglas0b778e72010-06-20 21:32:30 -0400228
229 /* Reset acceleration after half a second. */
230 if (scroll_acceleration && time_before(now,
231 msc->scroll_jiffies + HZ / 2))
232 msc->scroll_accel = max_t(int,
233 msc->scroll_accel - 1, 1);
234 else
235 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
236
Michael Poole128537c2010-02-06 12:24:36 -0500237 break;
238 case TOUCH_STATE_DRAG:
Chase Douglasc0426682010-06-20 21:32:31 -0400239 step_x /= (64 - (int)scroll_speed) * msc->scroll_accel;
240 if (step_x != 0) {
241 msc->touches[id].scroll_x -= step_x *
Chase Douglas0b778e72010-06-20 21:32:30 -0400242 (64 - scroll_speed) * msc->scroll_accel;
Michael Poole128537c2010-02-06 12:24:36 -0500243 msc->scroll_jiffies = now;
Chase Douglasc0426682010-06-20 21:32:31 -0400244 input_report_rel(input, REL_HWHEEL, -step_x);
245 }
246
247 step_y /= (64 - (int)scroll_speed) * msc->scroll_accel;
248 if (step_y != 0) {
249 msc->touches[id].scroll_y -= step_y *
250 (64 - scroll_speed) * msc->scroll_accel;
251 msc->scroll_jiffies = now;
252 input_report_rel(input, REL_WHEEL, step_y);
Michael Poole128537c2010-02-06 12:24:36 -0500253 }
254 break;
255 }
256 }
257
Yufeng Shena6d1bc12012-07-04 12:15:43 -0400258 if (down)
Chase Douglasa4622302010-08-31 21:56:23 -0400259 msc->ntouches++;
Yufeng Shena6d1bc12012-07-04 12:15:43 -0400260
261 input_mt_slot(input, id);
262 input_mt_report_slot_state(input, MT_TOOL_FINGER, down);
Chase Douglasa4622302010-08-31 21:56:23 -0400263
Michael Poole128537c2010-02-06 12:24:36 -0500264 /* Generate the input events for this touch. */
Yufeng Shen62643072012-07-04 12:14:43 -0400265 if (down) {
Henrik Rydberg921990b2010-08-31 21:56:24 -0400266 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major << 2);
267 input_report_abs(input, ABS_MT_TOUCH_MINOR, touch_minor << 2);
Henrik Rydberg2d9ca4e2011-03-09 18:38:57 +0100268 input_report_abs(input, ABS_MT_ORIENTATION, -orientation);
Michael Poole128537c2010-02-06 12:24:36 -0500269 input_report_abs(input, ABS_MT_POSITION_X, x);
270 input_report_abs(input, ABS_MT_POSITION_Y, y);
271
Chase Douglasa4622302010-08-31 21:56:23 -0400272 if (report_undeciphered) {
273 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE)
274 input_event(input, EV_MSC, MSC_RAW, tdata[7]);
275 else /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
276 input_event(input, EV_MSC, MSC_RAW, tdata[8]);
277 }
Michael Poole128537c2010-02-06 12:24:36 -0500278 }
279}
280
281static int magicmouse_raw_event(struct hid_device *hdev,
282 struct hid_report *report, u8 *data, int size)
283{
284 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
285 struct input_dev *input = msc->input;
Chase Douglasa4622302010-08-31 21:56:23 -0400286 int x = 0, y = 0, ii, clicks = 0, npoints;
Michael Poole128537c2010-02-06 12:24:36 -0500287
288 switch (data[0]) {
Chase Douglasa4622302010-08-31 21:56:23 -0400289 case TRACKPAD_REPORT_ID:
290 /* Expect four bytes of prefix, and N*9 bytes of touch data. */
291 if (size < 4 || ((size - 4) % 9) != 0)
292 return 0;
293 npoints = (size - 4) / 9;
294 msc->ntouches = 0;
295 for (ii = 0; ii < npoints; ii++)
296 magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
297
Chase Douglasa4622302010-08-31 21:56:23 -0400298 clicks = data[1];
299
300 /* The following bits provide a device specific timestamp. They
301 * are unused here.
302 *
303 * ts = data[1] >> 6 | data[2] << 2 | data[3] << 10;
304 */
305 break;
306 case MOUSE_REPORT_ID:
Michael Poole128537c2010-02-06 12:24:36 -0500307 /* Expect six bytes of prefix, and N*8 bytes of touch data. */
308 if (size < 6 || ((size - 6) % 8) != 0)
309 return 0;
Chase Douglas0228db72010-09-02 16:49:52 +0200310 npoints = (size - 6) / 8;
311 msc->ntouches = 0;
312 for (ii = 0; ii < npoints; ii++)
Michael Poole128537c2010-02-06 12:24:36 -0500313 magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
Chase Douglase3612e82010-07-05 09:57:52 -0400314
Michael Poole128537c2010-02-06 12:24:36 -0500315 /* When emulating three-button mode, it is important
316 * to have the current touch information before
317 * generating a click event.
318 */
Michael Poole7d876c02010-07-05 10:50:09 -0400319 x = (int)(((data[3] & 0x0c) << 28) | (data[1] << 22)) >> 22;
320 y = (int)(((data[3] & 0x30) << 26) | (data[2] << 22)) >> 22;
Michael Poole128537c2010-02-06 12:24:36 -0500321 clicks = data[3];
Chase Douglasc61b7ce2010-09-02 16:51:54 +0200322
323 /* The following bits provide a device specific timestamp. They
324 * are unused here.
325 *
326 * ts = data[3] >> 6 | data[4] << 2 | data[5] << 10;
327 */
Michael Poole128537c2010-02-06 12:24:36 -0500328 break;
Chase Douglasa4622302010-08-31 21:56:23 -0400329 case DOUBLE_REPORT_ID:
330 /* Sometimes the trackpad sends two touch reports in one
331 * packet.
332 */
333 magicmouse_raw_event(hdev, report, data + 2, data[1]);
334 magicmouse_raw_event(hdev, report, data + 2 + data[1],
335 size - 2 - data[1]);
336 break;
Michael Poole128537c2010-02-06 12:24:36 -0500337 default:
338 return 0;
339 }
340
Chase Douglasa4622302010-08-31 21:56:23 -0400341 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
342 magicmouse_emit_buttons(msc, clicks & 3);
343 input_report_rel(input, REL_X, x);
344 input_report_rel(input, REL_Y, y);
345 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
346 input_report_key(input, BTN_MOUSE, clicks & 1);
Yufeng Shena6d1bc12012-07-04 12:15:43 -0400347 input_mt_report_pointer_emulation(input, true);
Chase Douglasa4622302010-08-31 21:56:23 -0400348 }
349
Michael Poole128537c2010-02-06 12:24:36 -0500350 input_sync(input);
351 return 1;
352}
353
Yufeng Shena6d1bc12012-07-04 12:15:43 -0400354static int magicmouse_setup_input(struct input_dev *input, struct hid_device *hdev)
Michael Poole128537c2010-02-06 12:24:36 -0500355{
Yufeng Shena6d1bc12012-07-04 12:15:43 -0400356 int error;
357
Michael Poole71b38bd2010-02-11 00:32:57 -0500358 __set_bit(EV_KEY, input->evbit);
Michael Poole128537c2010-02-06 12:24:36 -0500359
Chase Douglasa4622302010-08-31 21:56:23 -0400360 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
361 __set_bit(BTN_LEFT, input->keybit);
362 __set_bit(BTN_RIGHT, input->keybit);
363 if (emulate_3button)
364 __set_bit(BTN_MIDDLE, input->keybit);
365
366 __set_bit(EV_REL, input->evbit);
367 __set_bit(REL_X, input->relbit);
368 __set_bit(REL_Y, input->relbit);
369 if (emulate_scroll_wheel) {
370 __set_bit(REL_WHEEL, input->relbit);
371 __set_bit(REL_HWHEEL, input->relbit);
372 }
373 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
Daniel van Vugtbca62142011-10-14 13:39:34 +0800374 /* input->keybit is initialized with incorrect button info
375 * for Magic Trackpad. There really is only one physical
376 * button (BTN_LEFT == BTN_MOUSE). Make sure we don't
377 * advertise buttons that don't exist...
378 */
379 __clear_bit(BTN_RIGHT, input->keybit);
380 __clear_bit(BTN_MIDDLE, input->keybit);
Chase Douglasa4622302010-08-31 21:56:23 -0400381 __set_bit(BTN_MOUSE, input->keybit);
382 __set_bit(BTN_TOOL_FINGER, input->keybit);
383 __set_bit(BTN_TOOL_DOUBLETAP, input->keybit);
384 __set_bit(BTN_TOOL_TRIPLETAP, input->keybit);
385 __set_bit(BTN_TOOL_QUADTAP, input->keybit);
Yufeng Shena6d1bc12012-07-04 12:15:43 -0400386 __set_bit(BTN_TOOL_QUINTTAP, input->keybit);
Chase Douglasa4622302010-08-31 21:56:23 -0400387 __set_bit(BTN_TOUCH, input->keybit);
Chase Douglas503f7d52012-02-13 20:12:31 -0800388 __set_bit(INPUT_PROP_POINTER, input->propbit);
389 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
Chase Douglasc0426682010-06-20 21:32:31 -0400390 }
Michael Poole128537c2010-02-06 12:24:36 -0500391
Michael Poole128537c2010-02-06 12:24:36 -0500392
Yufeng Shen62643072012-07-04 12:14:43 -0400393 __set_bit(EV_ABS, input->evbit);
Chase Douglasa4622302010-08-31 21:56:23 -0400394
Henrik Rydbergb4adbbe2012-08-11 22:07:55 +0200395 error = input_mt_init_slots(input, 16, 0);
Yufeng Shena6d1bc12012-07-04 12:15:43 -0400396 if (error)
397 return error;
Yufeng Shen62643072012-07-04 12:14:43 -0400398 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255 << 2,
399 4, 0);
400 input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 255 << 2,
401 4, 0);
402 input_set_abs_params(input, ABS_MT_ORIENTATION, -31, 32, 1, 0);
Chase Douglas4f6fdf02011-08-05 09:16:57 -0700403
Yufeng Shen62643072012-07-04 12:14:43 -0400404 /* Note: Touch Y position from the device is inverted relative
405 * to how pointer motion is reported (and relative to how USB
406 * HID recommends the coordinates work). This driver keeps
407 * the origin at the same position, and just uses the additive
408 * inverse of the reported Y.
409 */
410 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
411 input_set_abs_params(input, ABS_MT_POSITION_X,
412 MOUSE_MIN_X, MOUSE_MAX_X, 4, 0);
413 input_set_abs_params(input, ABS_MT_POSITION_Y,
414 MOUSE_MIN_Y, MOUSE_MAX_Y, 4, 0);
Chase Douglas4f6fdf02011-08-05 09:16:57 -0700415
Yufeng Shen62643072012-07-04 12:14:43 -0400416 input_abs_set_res(input, ABS_MT_POSITION_X,
417 MOUSE_RES_X);
418 input_abs_set_res(input, ABS_MT_POSITION_Y,
419 MOUSE_RES_Y);
420 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
421 input_set_abs_params(input, ABS_X, TRACKPAD_MIN_X,
422 TRACKPAD_MAX_X, 4, 0);
423 input_set_abs_params(input, ABS_Y, TRACKPAD_MIN_Y,
424 TRACKPAD_MAX_Y, 4, 0);
425 input_set_abs_params(input, ABS_MT_POSITION_X,
426 TRACKPAD_MIN_X, TRACKPAD_MAX_X, 4, 0);
427 input_set_abs_params(input, ABS_MT_POSITION_Y,
428 TRACKPAD_MIN_Y, TRACKPAD_MAX_Y, 4, 0);
Chase Douglascc5e0f02011-04-01 17:03:39 -0400429
Yufeng Shen62643072012-07-04 12:14:43 -0400430 input_abs_set_res(input, ABS_X, TRACKPAD_RES_X);
431 input_abs_set_res(input, ABS_Y, TRACKPAD_RES_Y);
432 input_abs_set_res(input, ABS_MT_POSITION_X,
433 TRACKPAD_RES_X);
434 input_abs_set_res(input, ABS_MT_POSITION_Y,
435 TRACKPAD_RES_Y);
Michael Poole128537c2010-02-06 12:24:36 -0500436 }
437
Yufeng Shen62643072012-07-04 12:14:43 -0400438 input_set_events_per_packet(input, 60);
439
Michael Poole128537c2010-02-06 12:24:36 -0500440 if (report_undeciphered) {
Michael Poole71b38bd2010-02-11 00:32:57 -0500441 __set_bit(EV_MSC, input->evbit);
442 __set_bit(MSC_RAW, input->mscbit);
Michael Poole128537c2010-02-06 12:24:36 -0500443 }
Yufeng Shena6d1bc12012-07-04 12:15:43 -0400444
445 return 0;
Michael Poole128537c2010-02-06 12:24:36 -0500446}
447
Michael Poole64eb1052010-09-24 13:58:18 +0200448static int magicmouse_input_mapping(struct hid_device *hdev,
449 struct hid_input *hi, struct hid_field *field,
450 struct hid_usage *usage, unsigned long **bit, int *max)
451{
452 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
453
454 if (!msc->input)
455 msc->input = hi->input;
456
Chase Douglas6a66bbd2010-12-08 15:08:04 -0800457 /* Magic Trackpad does not give relative data after switching to MT */
458 if (hi->input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD &&
459 field->flags & HID_MAIN_ITEM_RELATIVE)
460 return -1;
461
Michael Poole64eb1052010-09-24 13:58:18 +0200462 return 0;
463}
464
Michael Poole128537c2010-02-06 12:24:36 -0500465static int magicmouse_probe(struct hid_device *hdev,
466 const struct hid_device_id *id)
467{
Chase Douglas07735902010-08-31 21:56:19 -0400468 __u8 feature[] = { 0xd7, 0x01 };
Michael Poole128537c2010-02-06 12:24:36 -0500469 struct magicmouse_sc *msc;
470 struct hid_report *report;
471 int ret;
472
473 msc = kzalloc(sizeof(*msc), GFP_KERNEL);
474 if (msc == NULL) {
Joe Perches4291ee32010-12-09 19:29:03 -0800475 hid_err(hdev, "can't alloc magicmouse descriptor\n");
Michael Poole128537c2010-02-06 12:24:36 -0500476 return -ENOMEM;
477 }
478
Chase Douglas0b778e72010-06-20 21:32:30 -0400479 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
480
Michael Poole128537c2010-02-06 12:24:36 -0500481 msc->quirks = id->driver_data;
482 hid_set_drvdata(hdev, msc);
483
484 ret = hid_parse(hdev);
485 if (ret) {
Joe Perches4291ee32010-12-09 19:29:03 -0800486 hid_err(hdev, "magicmouse hid parse failed\n");
Michael Poole128537c2010-02-06 12:24:36 -0500487 goto err_free;
488 }
489
Jiri Kosina23d02112010-05-12 16:01:26 +0200490 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
Michael Poole128537c2010-02-06 12:24:36 -0500491 if (ret) {
Joe Perches4291ee32010-12-09 19:29:03 -0800492 hid_err(hdev, "magicmouse hw start failed\n");
Michael Poole128537c2010-02-06 12:24:36 -0500493 goto err_free;
494 }
495
Michael Poole64eb1052010-09-24 13:58:18 +0200496 /* We do this after hid-input is done parsing reports so that
497 * hid-input uses the most natural button and axis IDs.
498 */
Yufeng Shena6d1bc12012-07-04 12:15:43 -0400499 if (msc->input) {
500 ret = magicmouse_setup_input(msc->input, hdev);
501 if (ret) {
502 hid_err(hdev, "magicmouse setup input failed (%d)\n", ret);
503 goto err_stop_hw;
504 }
505 }
Jiri Kosina23d02112010-05-12 16:01:26 +0200506
Chase Douglasa4622302010-08-31 21:56:23 -0400507 if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE)
508 report = hid_register_report(hdev, HID_INPUT_REPORT,
509 MOUSE_REPORT_ID);
510 else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
511 report = hid_register_report(hdev, HID_INPUT_REPORT,
512 TRACKPAD_REPORT_ID);
513 report = hid_register_report(hdev, HID_INPUT_REPORT,
514 DOUBLE_REPORT_ID);
515 }
516
Michael Poole128537c2010-02-06 12:24:36 -0500517 if (!report) {
Joe Perches4291ee32010-12-09 19:29:03 -0800518 hid_err(hdev, "unable to register touch report\n");
Michael Poole128537c2010-02-06 12:24:36 -0500519 ret = -ENOMEM;
Michael Poole71b38bd2010-02-11 00:32:57 -0500520 goto err_stop_hw;
Michael Poole128537c2010-02-06 12:24:36 -0500521 }
522 report->size = 6;
523
Jiri Kosina35d851d2011-08-25 14:21:37 +0200524 /*
525 * Some devices repond with 'invalid report id' when feature
526 * report switching it into multitouch mode is sent to it.
527 *
528 * This results in -EIO from the _raw low-level transport callback,
529 * but there seems to be no other way of switching the mode.
530 * Thus the super-ugly hacky success check below.
531 */
Chase Douglas07735902010-08-31 21:56:19 -0400532 ret = hdev->hid_output_raw_report(hdev, feature, sizeof(feature),
Michael Poole128537c2010-02-06 12:24:36 -0500533 HID_FEATURE_REPORT);
Jiri Kosina35d851d2011-08-25 14:21:37 +0200534 if (ret != -EIO && ret != sizeof(feature)) {
Joe Perches4291ee32010-12-09 19:29:03 -0800535 hid_err(hdev, "unable to request touch data (%d)\n", ret);
Michael Poole71b38bd2010-02-11 00:32:57 -0500536 goto err_stop_hw;
Michael Poole128537c2010-02-06 12:24:36 -0500537 }
538
Michael Poole128537c2010-02-06 12:24:36 -0500539 return 0;
Michael Poole71b38bd2010-02-11 00:32:57 -0500540err_stop_hw:
541 hid_hw_stop(hdev);
542err_free:
Michael Poole128537c2010-02-06 12:24:36 -0500543 kfree(msc);
544 return ret;
545}
546
547static void magicmouse_remove(struct hid_device *hdev)
548{
Michael Poole28918c22010-03-09 06:47:35 -0500549 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
550
Michael Poole128537c2010-02-06 12:24:36 -0500551 hid_hw_stop(hdev);
Michael Poole28918c22010-03-09 06:47:35 -0500552 kfree(msc);
Michael Poole128537c2010-02-06 12:24:36 -0500553}
554
555static const struct hid_device_id magic_mice[] = {
Chase Douglasa4622302010-08-31 21:56:23 -0400556 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
557 USB_DEVICE_ID_APPLE_MAGICMOUSE), .driver_data = 0 },
558 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
559 USB_DEVICE_ID_APPLE_MAGICTRACKPAD), .driver_data = 0 },
Michael Poole128537c2010-02-06 12:24:36 -0500560 { }
561};
562MODULE_DEVICE_TABLE(hid, magic_mice);
563
564static struct hid_driver magicmouse_driver = {
565 .name = "magicmouse",
566 .id_table = magic_mice,
567 .probe = magicmouse_probe,
568 .remove = magicmouse_remove,
569 .raw_event = magicmouse_raw_event,
Michael Poole64eb1052010-09-24 13:58:18 +0200570 .input_mapping = magicmouse_input_mapping,
Michael Poole128537c2010-02-06 12:24:36 -0500571};
572
573static int __init magicmouse_init(void)
574{
575 int ret;
576
577 ret = hid_register_driver(&magicmouse_driver);
578 if (ret)
Joe Perches4291ee32010-12-09 19:29:03 -0800579 pr_err("can't register magicmouse driver\n");
Michael Poole128537c2010-02-06 12:24:36 -0500580
581 return ret;
582}
583
584static void __exit magicmouse_exit(void)
585{
586 hid_unregister_driver(&magicmouse_driver);
587}
588
589module_init(magicmouse_init);
590module_exit(magicmouse_exit);
591MODULE_LICENSE("GPL");