blob: 0ec91c18a4216a52a4a3c7d85292a22f61a6e828 [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>
19#include <linux/module.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090020#include <linux/slab.h>
Michael Poole128537c2010-02-06 12:24:36 -050021#include <linux/usb.h>
22
23#include "hid-ids.h"
24
Michael Poole71b38bd2010-02-11 00:32:57 -050025static bool emulate_3button = true;
Michael Poole128537c2010-02-06 12:24:36 -050026module_param(emulate_3button, bool, 0644);
27MODULE_PARM_DESC(emulate_3button, "Emulate a middle button");
28
29static int middle_button_start = -350;
30static int middle_button_stop = +350;
31
Michael Poole71b38bd2010-02-11 00:32:57 -050032static bool emulate_scroll_wheel = true;
Michael Poole128537c2010-02-06 12:24:36 -050033module_param(emulate_scroll_wheel, bool, 0644);
34MODULE_PARM_DESC(emulate_scroll_wheel, "Emulate a scroll wheel");
35
Chase Douglas0b778e72010-06-20 21:32:30 -040036static unsigned int scroll_speed = 32;
37static int param_set_scroll_speed(const char *val, struct kernel_param *kp) {
38 unsigned long speed;
39 if (!val || strict_strtoul(val, 0, &speed) || speed > 63)
40 return -EINVAL;
41 scroll_speed = speed;
42 return 0;
43}
44module_param_call(scroll_speed, param_set_scroll_speed, param_get_uint, &scroll_speed, 0644);
45MODULE_PARM_DESC(scroll_speed, "Scroll speed, value from 0 (slow) to 63 (fast)");
46
Chase Douglas9846f352010-06-02 10:28:27 -040047static bool scroll_acceleration = false;
48module_param(scroll_acceleration, bool, 0644);
49MODULE_PARM_DESC(scroll_acceleration, "Accelerate sequential scroll events");
50
Michael Poole71b38bd2010-02-11 00:32:57 -050051static bool report_touches = true;
Michael Poole128537c2010-02-06 12:24:36 -050052module_param(report_touches, bool, 0644);
53MODULE_PARM_DESC(report_touches, "Emit touch records (otherwise, only use them for emulation)");
54
Michael Poole71b38bd2010-02-11 00:32:57 -050055static bool report_undeciphered;
Michael Poole128537c2010-02-06 12:24:36 -050056module_param(report_undeciphered, bool, 0644);
57MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state field using a MSC_RAW event");
58
Chase Douglasa4622302010-08-31 21:56:23 -040059#define TRACKPAD_REPORT_ID 0x28
60#define MOUSE_REPORT_ID 0x29
61#define DOUBLE_REPORT_ID 0xf7
Michael Poole128537c2010-02-06 12:24:36 -050062/* These definitions are not precise, but they're close enough. (Bits
63 * 0x03 seem to indicate the aspect ratio of the touch, bits 0x70 seem
64 * to be some kind of bit mask -- 0x20 may be a near-field reading,
65 * and 0x40 is actual contact, and 0x10 may be a start/stop or change
66 * indication.)
67 */
68#define TOUCH_STATE_MASK 0xf0
69#define TOUCH_STATE_NONE 0x00
70#define TOUCH_STATE_START 0x30
71#define TOUCH_STATE_DRAG 0x40
72
Chase Douglas0b778e72010-06-20 21:32:30 -040073#define SCROLL_ACCEL_DEFAULT 7
74
Chase Douglasa4622302010-08-31 21:56:23 -040075/* Single touch emulation should only begin when no touches are currently down.
76 * This is true when single_touch_id is equal to NO_TOUCHES. If multiple touches
77 * are down and the touch providing for single touch emulation is lifted,
78 * single_touch_id is equal to SINGLE_TOUCH_UP. While single touch emulation is
Lucas De Marchi25985ed2011-03-30 22:57:33 -030079 * occurring, single_touch_id corresponds with the tracking id of the touch used.
Chase Douglasa4622302010-08-31 21:56:23 -040080 */
81#define NO_TOUCHES -1
82#define SINGLE_TOUCH_UP -2
83
Michael Poole128537c2010-02-06 12:24:36 -050084/**
85 * struct magicmouse_sc - Tracks Magic Mouse-specific data.
86 * @input: Input device through which we report events.
87 * @quirks: Currently unused.
Michael Poole128537c2010-02-06 12:24:36 -050088 * @ntouches: Number of touches in most recent touch report.
89 * @scroll_accel: Number of consecutive scroll motions.
90 * @scroll_jiffies: Time of last scroll motion.
91 * @touches: Most recent data for a touch, indexed by tracking ID.
92 * @tracking_ids: Mapping of current touch input data to @touches.
93 */
94struct magicmouse_sc {
95 struct input_dev *input;
96 unsigned long quirks;
97
Michael Poole128537c2010-02-06 12:24:36 -050098 int ntouches;
99 int scroll_accel;
100 unsigned long scroll_jiffies;
101
102 struct {
103 short x;
104 short y;
Chase Douglasc0426682010-06-20 21:32:31 -0400105 short scroll_x;
Michael Poole128537c2010-02-06 12:24:36 -0500106 short scroll_y;
107 u8 size;
108 } touches[16];
109 int tracking_ids[16];
Chase Douglasa4622302010-08-31 21:56:23 -0400110 int single_touch_id;
Michael Poole128537c2010-02-06 12:24:36 -0500111};
112
113static int magicmouse_firm_touch(struct magicmouse_sc *msc)
114{
115 int touch = -1;
116 int ii;
117
118 /* If there is only one "firm" touch, set touch to its
119 * tracking ID.
120 */
121 for (ii = 0; ii < msc->ntouches; ii++) {
122 int idx = msc->tracking_ids[ii];
123 if (msc->touches[idx].size < 8) {
124 /* Ignore this touch. */
125 } else if (touch >= 0) {
126 touch = -1;
127 break;
128 } else {
129 touch = idx;
130 }
131 }
132
133 return touch;
134}
135
136static void magicmouse_emit_buttons(struct magicmouse_sc *msc, int state)
137{
Michael Poole71b38bd2010-02-11 00:32:57 -0500138 int last_state = test_bit(BTN_LEFT, msc->input->key) << 0 |
139 test_bit(BTN_RIGHT, msc->input->key) << 1 |
140 test_bit(BTN_MIDDLE, msc->input->key) << 2;
Michael Poole128537c2010-02-06 12:24:36 -0500141
142 if (emulate_3button) {
143 int id;
144
145 /* If some button was pressed before, keep it held
146 * down. Otherwise, if there's exactly one firm
147 * touch, use that to override the mouse's guess.
148 */
149 if (state == 0) {
150 /* The button was released. */
151 } else if (last_state != 0) {
152 state = last_state;
153 } else if ((id = magicmouse_firm_touch(msc)) >= 0) {
154 int x = msc->touches[id].x;
155 if (x < middle_button_start)
156 state = 1;
157 else if (x > middle_button_stop)
158 state = 2;
159 else
160 state = 4;
161 } /* else: we keep the mouse's guess */
162
163 input_report_key(msc->input, BTN_MIDDLE, state & 4);
164 }
165
166 input_report_key(msc->input, BTN_LEFT, state & 1);
167 input_report_key(msc->input, BTN_RIGHT, state & 2);
168
169 if (state != last_state)
Chase Douglas0b778e72010-06-20 21:32:30 -0400170 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
Michael Poole128537c2010-02-06 12:24:36 -0500171}
172
173static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tdata)
174{
175 struct input_dev *input = msc->input;
Chase Douglasa4622302010-08-31 21:56:23 -0400176 int id, x, y, size, orientation, touch_major, touch_minor, state, down;
177
178 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
179 id = (tdata[6] << 2 | tdata[5] >> 6) & 0xf;
180 x = (tdata[1] << 28 | tdata[0] << 20) >> 20;
181 y = -((tdata[2] << 24 | tdata[1] << 16) >> 20);
182 size = tdata[5] & 0x3f;
183 orientation = (tdata[6] >> 2) - 32;
184 touch_major = tdata[3];
185 touch_minor = tdata[4];
186 state = tdata[7] & TOUCH_STATE_MASK;
187 down = state != TOUCH_STATE_NONE;
188 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
189 id = (tdata[7] << 2 | tdata[6] >> 6) & 0xf;
190 x = (tdata[1] << 27 | tdata[0] << 19) >> 19;
191 y = -((tdata[3] << 30 | tdata[2] << 22 | tdata[1] << 14) >> 19);
192 size = tdata[6] & 0x3f;
193 orientation = (tdata[7] >> 2) - 32;
194 touch_major = tdata[4];
195 touch_minor = tdata[5];
196 state = tdata[8] & TOUCH_STATE_MASK;
197 down = state != TOUCH_STATE_NONE;
198 }
Michael Poole128537c2010-02-06 12:24:36 -0500199
200 /* Store tracking ID and other fields. */
201 msc->tracking_ids[raw_id] = id;
202 msc->touches[id].x = x;
203 msc->touches[id].y = y;
Chase Douglas6de048b2010-08-31 21:56:20 -0400204 msc->touches[id].size = size;
Michael Poole128537c2010-02-06 12:24:36 -0500205
206 /* If requested, emulate a scroll wheel by detecting small
Chase Douglasef566d32010-06-02 10:28:25 -0400207 * vertical touch motions.
Michael Poole128537c2010-02-06 12:24:36 -0500208 */
Chase Douglasef566d32010-06-02 10:28:25 -0400209 if (emulate_scroll_wheel) {
Michael Poole128537c2010-02-06 12:24:36 -0500210 unsigned long now = jiffies;
Chase Douglasc0426682010-06-20 21:32:31 -0400211 int step_x = msc->touches[id].scroll_x - x;
212 int step_y = msc->touches[id].scroll_y - y;
Michael Poole128537c2010-02-06 12:24:36 -0500213
Michael Poole128537c2010-02-06 12:24:36 -0500214 /* Calculate and apply the scroll motion. */
Chase Douglas6de048b2010-08-31 21:56:20 -0400215 switch (state) {
Michael Poole128537c2010-02-06 12:24:36 -0500216 case TOUCH_STATE_START:
Chase Douglasc0426682010-06-20 21:32:31 -0400217 msc->touches[id].scroll_x = x;
Michael Poole128537c2010-02-06 12:24:36 -0500218 msc->touches[id].scroll_y = y;
Chase Douglas0b778e72010-06-20 21:32:30 -0400219
220 /* Reset acceleration after half a second. */
221 if (scroll_acceleration && time_before(now,
222 msc->scroll_jiffies + HZ / 2))
223 msc->scroll_accel = max_t(int,
224 msc->scroll_accel - 1, 1);
225 else
226 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
227
Michael Poole128537c2010-02-06 12:24:36 -0500228 break;
229 case TOUCH_STATE_DRAG:
Chase Douglasc0426682010-06-20 21:32:31 -0400230 step_x /= (64 - (int)scroll_speed) * msc->scroll_accel;
231 if (step_x != 0) {
232 msc->touches[id].scroll_x -= step_x *
Chase Douglas0b778e72010-06-20 21:32:30 -0400233 (64 - scroll_speed) * msc->scroll_accel;
Michael Poole128537c2010-02-06 12:24:36 -0500234 msc->scroll_jiffies = now;
Chase Douglasc0426682010-06-20 21:32:31 -0400235 input_report_rel(input, REL_HWHEEL, -step_x);
236 }
237
238 step_y /= (64 - (int)scroll_speed) * msc->scroll_accel;
239 if (step_y != 0) {
240 msc->touches[id].scroll_y -= step_y *
241 (64 - scroll_speed) * msc->scroll_accel;
242 msc->scroll_jiffies = now;
243 input_report_rel(input, REL_WHEEL, step_y);
Michael Poole128537c2010-02-06 12:24:36 -0500244 }
245 break;
246 }
247 }
248
Chase Douglasa4622302010-08-31 21:56:23 -0400249 if (down) {
250 msc->ntouches++;
251 if (msc->single_touch_id == NO_TOUCHES)
252 msc->single_touch_id = id;
253 } else if (msc->single_touch_id == id)
254 msc->single_touch_id = SINGLE_TOUCH_UP;
255
Michael Poole128537c2010-02-06 12:24:36 -0500256 /* Generate the input events for this touch. */
Chase Douglase3612e82010-07-05 09:57:52 -0400257 if (report_touches && down) {
Michael Poole128537c2010-02-06 12:24:36 -0500258 input_report_abs(input, ABS_MT_TRACKING_ID, id);
Henrik Rydberg921990b2010-08-31 21:56:24 -0400259 input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major << 2);
260 input_report_abs(input, ABS_MT_TOUCH_MINOR, touch_minor << 2);
Henrik Rydberg2d9ca4e2011-03-09 18:38:57 +0100261 input_report_abs(input, ABS_MT_ORIENTATION, -orientation);
Michael Poole128537c2010-02-06 12:24:36 -0500262 input_report_abs(input, ABS_MT_POSITION_X, x);
263 input_report_abs(input, ABS_MT_POSITION_Y, y);
264
Chase Douglasa4622302010-08-31 21:56:23 -0400265 if (report_undeciphered) {
266 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE)
267 input_event(input, EV_MSC, MSC_RAW, tdata[7]);
268 else /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
269 input_event(input, EV_MSC, MSC_RAW, tdata[8]);
270 }
Michael Poole128537c2010-02-06 12:24:36 -0500271
272 input_mt_sync(input);
273 }
274}
275
276static int magicmouse_raw_event(struct hid_device *hdev,
277 struct hid_report *report, u8 *data, int size)
278{
279 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
280 struct input_dev *input = msc->input;
Chase Douglasa4622302010-08-31 21:56:23 -0400281 int x = 0, y = 0, ii, clicks = 0, npoints;
Michael Poole128537c2010-02-06 12:24:36 -0500282
283 switch (data[0]) {
Chase Douglasa4622302010-08-31 21:56:23 -0400284 case TRACKPAD_REPORT_ID:
285 /* Expect four bytes of prefix, and N*9 bytes of touch data. */
286 if (size < 4 || ((size - 4) % 9) != 0)
287 return 0;
288 npoints = (size - 4) / 9;
289 msc->ntouches = 0;
290 for (ii = 0; ii < npoints; ii++)
291 magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
292
293 /* We don't need an MT sync here because trackpad emits a
294 * BTN_TOUCH event in a new frame when all touches are released.
295 */
296 if (msc->ntouches == 0)
297 msc->single_touch_id = NO_TOUCHES;
298
299 clicks = data[1];
300
301 /* The following bits provide a device specific timestamp. They
302 * are unused here.
303 *
304 * ts = data[1] >> 6 | data[2] << 2 | data[3] << 10;
305 */
306 break;
307 case MOUSE_REPORT_ID:
Michael Poole128537c2010-02-06 12:24:36 -0500308 /* Expect six bytes of prefix, and N*8 bytes of touch data. */
309 if (size < 6 || ((size - 6) % 8) != 0)
310 return 0;
Chase Douglas0228db72010-09-02 16:49:52 +0200311 npoints = (size - 6) / 8;
312 msc->ntouches = 0;
313 for (ii = 0; ii < npoints; ii++)
Michael Poole128537c2010-02-06 12:24:36 -0500314 magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
Chase Douglase3612e82010-07-05 09:57:52 -0400315
Chase Douglas0228db72010-09-02 16:49:52 +0200316 if (report_touches && msc->ntouches == 0)
317 input_mt_sync(input);
Chase Douglase3612e82010-07-05 09:57:52 -0400318
Michael Poole128537c2010-02-06 12:24:36 -0500319 /* When emulating three-button mode, it is important
320 * to have the current touch information before
321 * generating a click event.
322 */
Michael Poole7d876c02010-07-05 10:50:09 -0400323 x = (int)(((data[3] & 0x0c) << 28) | (data[1] << 22)) >> 22;
324 y = (int)(((data[3] & 0x30) << 26) | (data[2] << 22)) >> 22;
Michael Poole128537c2010-02-06 12:24:36 -0500325 clicks = data[3];
Chase Douglasc61b7ce2010-09-02 16:51:54 +0200326
327 /* The following bits provide a device specific timestamp. They
328 * are unused here.
329 *
330 * ts = data[3] >> 6 | data[4] << 2 | data[5] << 10;
331 */
Michael Poole128537c2010-02-06 12:24:36 -0500332 break;
Chase Douglasa4622302010-08-31 21:56:23 -0400333 case DOUBLE_REPORT_ID:
334 /* Sometimes the trackpad sends two touch reports in one
335 * packet.
336 */
337 magicmouse_raw_event(hdev, report, data + 2, data[1]);
338 magicmouse_raw_event(hdev, report, data + 2 + data[1],
339 size - 2 - data[1]);
340 break;
Michael Poole128537c2010-02-06 12:24:36 -0500341 default:
342 return 0;
343 }
344
Chase Douglasa4622302010-08-31 21:56:23 -0400345 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
346 magicmouse_emit_buttons(msc, clicks & 3);
347 input_report_rel(input, REL_X, x);
348 input_report_rel(input, REL_Y, y);
349 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
350 input_report_key(input, BTN_MOUSE, clicks & 1);
351 input_report_key(input, BTN_TOUCH, msc->ntouches > 0);
352 input_report_key(input, BTN_TOOL_FINGER, msc->ntouches == 1);
353 input_report_key(input, BTN_TOOL_DOUBLETAP, msc->ntouches == 2);
354 input_report_key(input, BTN_TOOL_TRIPLETAP, msc->ntouches == 3);
355 input_report_key(input, BTN_TOOL_QUADTAP, msc->ntouches == 4);
356 if (msc->single_touch_id >= 0) {
357 input_report_abs(input, ABS_X,
358 msc->touches[msc->single_touch_id].x);
359 input_report_abs(input, ABS_Y,
360 msc->touches[msc->single_touch_id].y);
361 }
362 }
363
Michael Poole128537c2010-02-06 12:24:36 -0500364 input_sync(input);
365 return 1;
366}
367
Michael Poole128537c2010-02-06 12:24:36 -0500368static void magicmouse_setup_input(struct input_dev *input, struct hid_device *hdev)
369{
Michael Poole71b38bd2010-02-11 00:32:57 -0500370 __set_bit(EV_KEY, input->evbit);
Michael Poole128537c2010-02-06 12:24:36 -0500371
Chase Douglasa4622302010-08-31 21:56:23 -0400372 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
373 __set_bit(BTN_LEFT, input->keybit);
374 __set_bit(BTN_RIGHT, input->keybit);
375 if (emulate_3button)
376 __set_bit(BTN_MIDDLE, input->keybit);
377
378 __set_bit(EV_REL, input->evbit);
379 __set_bit(REL_X, input->relbit);
380 __set_bit(REL_Y, input->relbit);
381 if (emulate_scroll_wheel) {
382 __set_bit(REL_WHEEL, input->relbit);
383 __set_bit(REL_HWHEEL, input->relbit);
384 }
385 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
386 __set_bit(BTN_MOUSE, input->keybit);
387 __set_bit(BTN_TOOL_FINGER, input->keybit);
388 __set_bit(BTN_TOOL_DOUBLETAP, input->keybit);
389 __set_bit(BTN_TOOL_TRIPLETAP, input->keybit);
390 __set_bit(BTN_TOOL_QUADTAP, input->keybit);
391 __set_bit(BTN_TOUCH, input->keybit);
Chase Douglasc0426682010-06-20 21:32:31 -0400392 }
Michael Poole128537c2010-02-06 12:24:36 -0500393
394 if (report_touches) {
Michael Poole71b38bd2010-02-11 00:32:57 -0500395 __set_bit(EV_ABS, input->evbit);
Michael Poole128537c2010-02-06 12:24:36 -0500396
Michael Poole71b38bd2010-02-11 00:32:57 -0500397 input_set_abs_params(input, ABS_MT_TRACKING_ID, 0, 15, 0, 0);
398 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255, 4, 0);
399 input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 255, 4, 0);
Henrik Rydberg2d9ca4e2011-03-09 18:38:57 +0100400 input_set_abs_params(input, ABS_MT_ORIENTATION, -31, 32, 1, 0);
Chase Douglasa4622302010-08-31 21:56:23 -0400401
Michael Poole128537c2010-02-06 12:24:36 -0500402 /* Note: Touch Y position from the device is inverted relative
403 * to how pointer motion is reported (and relative to how USB
404 * HID recommends the coordinates work). This driver keeps
405 * the origin at the same position, and just uses the additive
406 * inverse of the reported Y.
407 */
Chase Douglasa4622302010-08-31 21:56:23 -0400408 if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
409 input_set_abs_params(input, ABS_MT_POSITION_X, -1100,
410 1358, 4, 0);
411 input_set_abs_params(input, ABS_MT_POSITION_Y, -1589,
412 2047, 4, 0);
413 } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
414 input_set_abs_params(input, ABS_X, -2909, 3167, 4, 0);
415 input_set_abs_params(input, ABS_Y, -2456, 2565, 4, 0);
416 input_set_abs_params(input, ABS_MT_POSITION_X, -2909,
417 3167, 4, 0);
418 input_set_abs_params(input, ABS_MT_POSITION_Y, -2456,
419 2565, 4, 0);
420 }
Chase Douglascc5e0f02011-04-01 17:03:39 -0400421
422 input_set_events_per_packet(input, 60);
Michael Poole128537c2010-02-06 12:24:36 -0500423 }
424
425 if (report_undeciphered) {
Michael Poole71b38bd2010-02-11 00:32:57 -0500426 __set_bit(EV_MSC, input->evbit);
427 __set_bit(MSC_RAW, input->mscbit);
Michael Poole128537c2010-02-06 12:24:36 -0500428 }
429}
430
Michael Poole64eb1052010-09-24 13:58:18 +0200431static int magicmouse_input_mapping(struct hid_device *hdev,
432 struct hid_input *hi, struct hid_field *field,
433 struct hid_usage *usage, unsigned long **bit, int *max)
434{
435 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
436
437 if (!msc->input)
438 msc->input = hi->input;
439
Chase Douglas6a66bbd2010-12-08 15:08:04 -0800440 /* Magic Trackpad does not give relative data after switching to MT */
441 if (hi->input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD &&
442 field->flags & HID_MAIN_ITEM_RELATIVE)
443 return -1;
444
Michael Poole64eb1052010-09-24 13:58:18 +0200445 return 0;
446}
447
Michael Poole128537c2010-02-06 12:24:36 -0500448static int magicmouse_probe(struct hid_device *hdev,
449 const struct hid_device_id *id)
450{
Chase Douglas07735902010-08-31 21:56:19 -0400451 __u8 feature[] = { 0xd7, 0x01 };
Michael Poole128537c2010-02-06 12:24:36 -0500452 struct magicmouse_sc *msc;
453 struct hid_report *report;
454 int ret;
455
456 msc = kzalloc(sizeof(*msc), GFP_KERNEL);
457 if (msc == NULL) {
Joe Perches4291ee32010-12-09 19:29:03 -0800458 hid_err(hdev, "can't alloc magicmouse descriptor\n");
Michael Poole128537c2010-02-06 12:24:36 -0500459 return -ENOMEM;
460 }
461
Chase Douglas0b778e72010-06-20 21:32:30 -0400462 msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
463
Michael Poole128537c2010-02-06 12:24:36 -0500464 msc->quirks = id->driver_data;
465 hid_set_drvdata(hdev, msc);
466
Chase Douglasa4622302010-08-31 21:56:23 -0400467 msc->single_touch_id = NO_TOUCHES;
468
Michael Poole128537c2010-02-06 12:24:36 -0500469 ret = hid_parse(hdev);
470 if (ret) {
Joe Perches4291ee32010-12-09 19:29:03 -0800471 hid_err(hdev, "magicmouse hid parse failed\n");
Michael Poole128537c2010-02-06 12:24:36 -0500472 goto err_free;
473 }
474
Jiri Kosina23d02112010-05-12 16:01:26 +0200475 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
Michael Poole128537c2010-02-06 12:24:36 -0500476 if (ret) {
Joe Perches4291ee32010-12-09 19:29:03 -0800477 hid_err(hdev, "magicmouse hw start failed\n");
Michael Poole128537c2010-02-06 12:24:36 -0500478 goto err_free;
479 }
480
Michael Poole64eb1052010-09-24 13:58:18 +0200481 /* We do this after hid-input is done parsing reports so that
482 * hid-input uses the most natural button and axis IDs.
483 */
484 if (msc->input)
485 magicmouse_setup_input(msc->input, hdev);
Jiri Kosina23d02112010-05-12 16:01:26 +0200486
Chase Douglasa4622302010-08-31 21:56:23 -0400487 if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE)
488 report = hid_register_report(hdev, HID_INPUT_REPORT,
489 MOUSE_REPORT_ID);
490 else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
491 report = hid_register_report(hdev, HID_INPUT_REPORT,
492 TRACKPAD_REPORT_ID);
493 report = hid_register_report(hdev, HID_INPUT_REPORT,
494 DOUBLE_REPORT_ID);
495 }
496
Michael Poole128537c2010-02-06 12:24:36 -0500497 if (!report) {
Joe Perches4291ee32010-12-09 19:29:03 -0800498 hid_err(hdev, "unable to register touch report\n");
Michael Poole128537c2010-02-06 12:24:36 -0500499 ret = -ENOMEM;
Michael Poole71b38bd2010-02-11 00:32:57 -0500500 goto err_stop_hw;
Michael Poole128537c2010-02-06 12:24:36 -0500501 }
502 report->size = 6;
503
Chase Douglas07735902010-08-31 21:56:19 -0400504 ret = hdev->hid_output_raw_report(hdev, feature, sizeof(feature),
Michael Poole128537c2010-02-06 12:24:36 -0500505 HID_FEATURE_REPORT);
Jiri Kosinac3a49242011-06-16 12:21:34 +0200506 if (ret != sizeof(feature)) {
Joe Perches4291ee32010-12-09 19:29:03 -0800507 hid_err(hdev, "unable to request touch data (%d)\n", ret);
Michael Poole71b38bd2010-02-11 00:32:57 -0500508 goto err_stop_hw;
Michael Poole128537c2010-02-06 12:24:36 -0500509 }
510
Michael Poole128537c2010-02-06 12:24:36 -0500511 return 0;
Michael Poole71b38bd2010-02-11 00:32:57 -0500512err_stop_hw:
513 hid_hw_stop(hdev);
514err_free:
Michael Poole128537c2010-02-06 12:24:36 -0500515 kfree(msc);
516 return ret;
517}
518
519static void magicmouse_remove(struct hid_device *hdev)
520{
Michael Poole28918c22010-03-09 06:47:35 -0500521 struct magicmouse_sc *msc = hid_get_drvdata(hdev);
522
Michael Poole128537c2010-02-06 12:24:36 -0500523 hid_hw_stop(hdev);
Michael Poole28918c22010-03-09 06:47:35 -0500524 kfree(msc);
Michael Poole128537c2010-02-06 12:24:36 -0500525}
526
527static const struct hid_device_id magic_mice[] = {
Chase Douglasa4622302010-08-31 21:56:23 -0400528 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
529 USB_DEVICE_ID_APPLE_MAGICMOUSE), .driver_data = 0 },
530 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
531 USB_DEVICE_ID_APPLE_MAGICTRACKPAD), .driver_data = 0 },
Michael Poole128537c2010-02-06 12:24:36 -0500532 { }
533};
534MODULE_DEVICE_TABLE(hid, magic_mice);
535
536static struct hid_driver magicmouse_driver = {
537 .name = "magicmouse",
538 .id_table = magic_mice,
539 .probe = magicmouse_probe,
540 .remove = magicmouse_remove,
541 .raw_event = magicmouse_raw_event,
Michael Poole64eb1052010-09-24 13:58:18 +0200542 .input_mapping = magicmouse_input_mapping,
Michael Poole128537c2010-02-06 12:24:36 -0500543};
544
545static int __init magicmouse_init(void)
546{
547 int ret;
548
549 ret = hid_register_driver(&magicmouse_driver);
550 if (ret)
Joe Perches4291ee32010-12-09 19:29:03 -0800551 pr_err("can't register magicmouse driver\n");
Michael Poole128537c2010-02-06 12:24:36 -0500552
553 return ret;
554}
555
556static void __exit magicmouse_exit(void)
557{
558 hid_unregister_driver(&magicmouse_driver);
559}
560
561module_init(magicmouse_init);
562module_exit(magicmouse_exit);
563MODULE_LICENSE("GPL");