Commit | Line | Data |
---|---|---|
128537ce MP |
1 | /* |
2 | * Apple "Magic" Wireless Mouse driver | |
3 | * | |
4 | * Copyright (c) 2010 Michael Poole <mdpoole@troilus.org> | |
a462230e | 5 | * Copyright (c) 2010 Chase Douglas <chase.douglas@canonical.com> |
128537ce MP |
6 | */ |
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 | ||
4291ee30 JP |
15 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
16 | ||
128537ce MP |
17 | #include <linux/device.h> |
18 | #include <linux/hid.h> | |
a6d1bc1d | 19 | #include <linux/input/mt.h> |
128537ce | 20 | #include <linux/module.h> |
5a0e3ad6 | 21 | #include <linux/slab.h> |
128537ce MP |
22 | |
23 | #include "hid-ids.h" | |
24 | ||
71b38bd4 | 25 | static bool emulate_3button = true; |
128537ce MP |
26 | module_param(emulate_3button, bool, 0644); |
27 | MODULE_PARM_DESC(emulate_3button, "Emulate a middle button"); | |
28 | ||
29 | static int middle_button_start = -350; | |
30 | static int middle_button_stop = +350; | |
31 | ||
71b38bd4 | 32 | static bool emulate_scroll_wheel = true; |
128537ce MP |
33 | module_param(emulate_scroll_wheel, bool, 0644); |
34 | MODULE_PARM_DESC(emulate_scroll_wheel, "Emulate a scroll wheel"); | |
35 | ||
0b778e76 CD |
36 | static unsigned int scroll_speed = 32; |
37 | static int param_set_scroll_speed(const char *val, struct kernel_param *kp) { | |
38 | unsigned long speed; | |
dfc450b5 | 39 | if (!val || kstrtoul(val, 0, &speed) || speed > 63) |
0b778e76 CD |
40 | return -EINVAL; |
41 | scroll_speed = speed; | |
42 | return 0; | |
43 | } | |
44 | module_param_call(scroll_speed, param_set_scroll_speed, param_get_uint, &scroll_speed, 0644); | |
45 | MODULE_PARM_DESC(scroll_speed, "Scroll speed, value from 0 (slow) to 63 (fast)"); | |
46 | ||
9846f350 CD |
47 | static bool scroll_acceleration = false; |
48 | module_param(scroll_acceleration, bool, 0644); | |
49 | MODULE_PARM_DESC(scroll_acceleration, "Accelerate sequential scroll events"); | |
50 | ||
71b38bd4 | 51 | static bool report_undeciphered; |
128537ce MP |
52 | module_param(report_undeciphered, bool, 0644); |
53 | MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state field using a MSC_RAW event"); | |
54 | ||
a462230e CD |
55 | #define TRACKPAD_REPORT_ID 0x28 |
56 | #define MOUSE_REPORT_ID 0x29 | |
57 | #define DOUBLE_REPORT_ID 0xf7 | |
128537ce MP |
58 | /* These definitions are not precise, but they're close enough. (Bits |
59 | * 0x03 seem to indicate the aspect ratio of the touch, bits 0x70 seem | |
60 | * to be some kind of bit mask -- 0x20 may be a near-field reading, | |
61 | * and 0x40 is actual contact, and 0x10 may be a start/stop or change | |
62 | * indication.) | |
63 | */ | |
64 | #define TOUCH_STATE_MASK 0xf0 | |
65 | #define TOUCH_STATE_NONE 0x00 | |
66 | #define TOUCH_STATE_START 0x30 | |
67 | #define TOUCH_STATE_DRAG 0x40 | |
68 | ||
0b778e76 CD |
69 | #define SCROLL_ACCEL_DEFAULT 7 |
70 | ||
4f6fdf08 CD |
71 | /* Touch surface information. Dimension is in hundredths of a mm, min and max |
72 | * are in units. */ | |
73 | #define MOUSE_DIMENSION_X (float)9056 | |
74 | #define MOUSE_MIN_X -1100 | |
75 | #define MOUSE_MAX_X 1258 | |
76 | #define MOUSE_RES_X ((MOUSE_MAX_X - MOUSE_MIN_X) / (MOUSE_DIMENSION_X / 100)) | |
77 | #define MOUSE_DIMENSION_Y (float)5152 | |
78 | #define MOUSE_MIN_Y -1589 | |
79 | #define MOUSE_MAX_Y 2047 | |
80 | #define MOUSE_RES_Y ((MOUSE_MAX_Y - MOUSE_MIN_Y) / (MOUSE_DIMENSION_Y / 100)) | |
81 | ||
82 | #define TRACKPAD_DIMENSION_X (float)13000 | |
83 | #define TRACKPAD_MIN_X -2909 | |
84 | #define TRACKPAD_MAX_X 3167 | |
85 | #define TRACKPAD_RES_X \ | |
86 | ((TRACKPAD_MAX_X - TRACKPAD_MIN_X) / (TRACKPAD_DIMENSION_X / 100)) | |
87 | #define TRACKPAD_DIMENSION_Y (float)11000 | |
88 | #define TRACKPAD_MIN_Y -2456 | |
89 | #define TRACKPAD_MAX_Y 2565 | |
90 | #define TRACKPAD_RES_Y \ | |
91 | ((TRACKPAD_MAX_Y - TRACKPAD_MIN_Y) / (TRACKPAD_DIMENSION_Y / 100)) | |
92 | ||
128537ce MP |
93 | /** |
94 | * struct magicmouse_sc - Tracks Magic Mouse-specific data. | |
95 | * @input: Input device through which we report events. | |
96 | * @quirks: Currently unused. | |
128537ce MP |
97 | * @ntouches: Number of touches in most recent touch report. |
98 | * @scroll_accel: Number of consecutive scroll motions. | |
99 | * @scroll_jiffies: Time of last scroll motion. | |
100 | * @touches: Most recent data for a touch, indexed by tracking ID. | |
101 | * @tracking_ids: Mapping of current touch input data to @touches. | |
102 | */ | |
103 | struct magicmouse_sc { | |
104 | struct input_dev *input; | |
105 | unsigned long quirks; | |
106 | ||
128537ce MP |
107 | int ntouches; |
108 | int scroll_accel; | |
109 | unsigned long scroll_jiffies; | |
110 | ||
111 | struct { | |
112 | short x; | |
113 | short y; | |
c0426688 | 114 | short scroll_x; |
128537ce MP |
115 | short scroll_y; |
116 | u8 size; | |
117 | } touches[16]; | |
118 | int tracking_ids[16]; | |
119 | }; | |
120 | ||
121 | static int magicmouse_firm_touch(struct magicmouse_sc *msc) | |
122 | { | |
123 | int touch = -1; | |
124 | int ii; | |
125 | ||
126 | /* If there is only one "firm" touch, set touch to its | |
127 | * tracking ID. | |
128 | */ | |
129 | for (ii = 0; ii < msc->ntouches; ii++) { | |
130 | int idx = msc->tracking_ids[ii]; | |
131 | if (msc->touches[idx].size < 8) { | |
132 | /* Ignore this touch. */ | |
133 | } else if (touch >= 0) { | |
134 | touch = -1; | |
135 | break; | |
136 | } else { | |
137 | touch = idx; | |
138 | } | |
139 | } | |
140 | ||
141 | return touch; | |
142 | } | |
143 | ||
144 | static void magicmouse_emit_buttons(struct magicmouse_sc *msc, int state) | |
145 | { | |
71b38bd4 MP |
146 | int last_state = test_bit(BTN_LEFT, msc->input->key) << 0 | |
147 | test_bit(BTN_RIGHT, msc->input->key) << 1 | | |
148 | test_bit(BTN_MIDDLE, msc->input->key) << 2; | |
128537ce MP |
149 | |
150 | if (emulate_3button) { | |
151 | int id; | |
152 | ||
153 | /* If some button was pressed before, keep it held | |
154 | * down. Otherwise, if there's exactly one firm | |
155 | * touch, use that to override the mouse's guess. | |
156 | */ | |
157 | if (state == 0) { | |
158 | /* The button was released. */ | |
159 | } else if (last_state != 0) { | |
160 | state = last_state; | |
161 | } else if ((id = magicmouse_firm_touch(msc)) >= 0) { | |
162 | int x = msc->touches[id].x; | |
163 | if (x < middle_button_start) | |
164 | state = 1; | |
165 | else if (x > middle_button_stop) | |
166 | state = 2; | |
167 | else | |
168 | state = 4; | |
169 | } /* else: we keep the mouse's guess */ | |
170 | ||
171 | input_report_key(msc->input, BTN_MIDDLE, state & 4); | |
172 | } | |
173 | ||
174 | input_report_key(msc->input, BTN_LEFT, state & 1); | |
175 | input_report_key(msc->input, BTN_RIGHT, state & 2); | |
176 | ||
177 | if (state != last_state) | |
0b778e76 | 178 | msc->scroll_accel = SCROLL_ACCEL_DEFAULT; |
128537ce MP |
179 | } |
180 | ||
181 | static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tdata) | |
182 | { | |
183 | struct input_dev *input = msc->input; | |
a462230e CD |
184 | int id, x, y, size, orientation, touch_major, touch_minor, state, down; |
185 | ||
186 | if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) { | |
187 | id = (tdata[6] << 2 | tdata[5] >> 6) & 0xf; | |
188 | x = (tdata[1] << 28 | tdata[0] << 20) >> 20; | |
189 | y = -((tdata[2] << 24 | tdata[1] << 16) >> 20); | |
190 | size = tdata[5] & 0x3f; | |
191 | orientation = (tdata[6] >> 2) - 32; | |
192 | touch_major = tdata[3]; | |
193 | touch_minor = tdata[4]; | |
194 | state = tdata[7] & TOUCH_STATE_MASK; | |
195 | down = state != TOUCH_STATE_NONE; | |
196 | } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ | |
197 | id = (tdata[7] << 2 | tdata[6] >> 6) & 0xf; | |
198 | x = (tdata[1] << 27 | tdata[0] << 19) >> 19; | |
199 | y = -((tdata[3] << 30 | tdata[2] << 22 | tdata[1] << 14) >> 19); | |
200 | size = tdata[6] & 0x3f; | |
201 | orientation = (tdata[7] >> 2) - 32; | |
202 | touch_major = tdata[4]; | |
203 | touch_minor = tdata[5]; | |
204 | state = tdata[8] & TOUCH_STATE_MASK; | |
205 | down = state != TOUCH_STATE_NONE; | |
206 | } | |
128537ce MP |
207 | |
208 | /* Store tracking ID and other fields. */ | |
209 | msc->tracking_ids[raw_id] = id; | |
210 | msc->touches[id].x = x; | |
211 | msc->touches[id].y = y; | |
6de048bf | 212 | msc->touches[id].size = size; |
128537ce MP |
213 | |
214 | /* If requested, emulate a scroll wheel by detecting small | |
ef566d30 | 215 | * vertical touch motions. |
128537ce | 216 | */ |
ef566d30 | 217 | if (emulate_scroll_wheel) { |
128537ce | 218 | unsigned long now = jiffies; |
c0426688 CD |
219 | int step_x = msc->touches[id].scroll_x - x; |
220 | int step_y = msc->touches[id].scroll_y - y; | |
128537ce | 221 | |
128537ce | 222 | /* Calculate and apply the scroll motion. */ |
6de048bf | 223 | switch (state) { |
128537ce | 224 | case TOUCH_STATE_START: |
c0426688 | 225 | msc->touches[id].scroll_x = x; |
128537ce | 226 | msc->touches[id].scroll_y = y; |
0b778e76 CD |
227 | |
228 | /* Reset acceleration after half a second. */ | |
229 | if (scroll_acceleration && time_before(now, | |
230 | msc->scroll_jiffies + HZ / 2)) | |
231 | msc->scroll_accel = max_t(int, | |
232 | msc->scroll_accel - 1, 1); | |
233 | else | |
234 | msc->scroll_accel = SCROLL_ACCEL_DEFAULT; | |
235 | ||
128537ce MP |
236 | break; |
237 | case TOUCH_STATE_DRAG: | |
c0426688 CD |
238 | step_x /= (64 - (int)scroll_speed) * msc->scroll_accel; |
239 | if (step_x != 0) { | |
240 | msc->touches[id].scroll_x -= step_x * | |
0b778e76 | 241 | (64 - scroll_speed) * msc->scroll_accel; |
128537ce | 242 | msc->scroll_jiffies = now; |
c0426688 CD |
243 | input_report_rel(input, REL_HWHEEL, -step_x); |
244 | } | |
245 | ||
246 | step_y /= (64 - (int)scroll_speed) * msc->scroll_accel; | |
247 | if (step_y != 0) { | |
248 | msc->touches[id].scroll_y -= step_y * | |
249 | (64 - scroll_speed) * msc->scroll_accel; | |
250 | msc->scroll_jiffies = now; | |
251 | input_report_rel(input, REL_WHEEL, step_y); | |
128537ce MP |
252 | } |
253 | break; | |
254 | } | |
255 | } | |
256 | ||
a6d1bc1d | 257 | if (down) |
a462230e | 258 | msc->ntouches++; |
a6d1bc1d YS |
259 | |
260 | input_mt_slot(input, id); | |
261 | input_mt_report_slot_state(input, MT_TOOL_FINGER, down); | |
a462230e | 262 | |
128537ce | 263 | /* Generate the input events for this touch. */ |
6264307e | 264 | if (down) { |
921990b7 HR |
265 | input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major << 2); |
266 | input_report_abs(input, ABS_MT_TOUCH_MINOR, touch_minor << 2); | |
2d9ca4e9 | 267 | input_report_abs(input, ABS_MT_ORIENTATION, -orientation); |
128537ce MP |
268 | input_report_abs(input, ABS_MT_POSITION_X, x); |
269 | input_report_abs(input, ABS_MT_POSITION_Y, y); | |
270 | ||
a462230e CD |
271 | if (report_undeciphered) { |
272 | if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) | |
273 | input_event(input, EV_MSC, MSC_RAW, tdata[7]); | |
274 | else /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ | |
275 | input_event(input, EV_MSC, MSC_RAW, tdata[8]); | |
276 | } | |
128537ce MP |
277 | } |
278 | } | |
279 | ||
280 | static int magicmouse_raw_event(struct hid_device *hdev, | |
281 | struct hid_report *report, u8 *data, int size) | |
282 | { | |
283 | struct magicmouse_sc *msc = hid_get_drvdata(hdev); | |
284 | struct input_dev *input = msc->input; | |
a462230e | 285 | int x = 0, y = 0, ii, clicks = 0, npoints; |
128537ce MP |
286 | |
287 | switch (data[0]) { | |
a462230e CD |
288 | case TRACKPAD_REPORT_ID: |
289 | /* Expect four bytes of prefix, and N*9 bytes of touch data. */ | |
290 | if (size < 4 || ((size - 4) % 9) != 0) | |
291 | return 0; | |
292 | npoints = (size - 4) / 9; | |
c54def7b JK |
293 | if (npoints > 15) { |
294 | hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n", | |
295 | size); | |
296 | return 0; | |
297 | } | |
a462230e CD |
298 | msc->ntouches = 0; |
299 | for (ii = 0; ii < npoints; ii++) | |
300 | magicmouse_emit_touch(msc, ii, data + ii * 9 + 4); | |
301 | ||
a462230e CD |
302 | clicks = data[1]; |
303 | ||
304 | /* The following bits provide a device specific timestamp. They | |
305 | * are unused here. | |
306 | * | |
307 | * ts = data[1] >> 6 | data[2] << 2 | data[3] << 10; | |
308 | */ | |
309 | break; | |
310 | case MOUSE_REPORT_ID: | |
128537ce MP |
311 | /* Expect six bytes of prefix, and N*8 bytes of touch data. */ |
312 | if (size < 6 || ((size - 6) % 8) != 0) | |
313 | return 0; | |
0228db70 | 314 | npoints = (size - 6) / 8; |
c54def7b JK |
315 | if (npoints > 15) { |
316 | hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n", | |
317 | size); | |
318 | return 0; | |
319 | } | |
0228db70 CD |
320 | msc->ntouches = 0; |
321 | for (ii = 0; ii < npoints; ii++) | |
128537ce | 322 | magicmouse_emit_touch(msc, ii, data + ii * 8 + 6); |
e3612e86 | 323 | |
128537ce MP |
324 | /* When emulating three-button mode, it is important |
325 | * to have the current touch information before | |
326 | * generating a click event. | |
327 | */ | |
7d876c05 MP |
328 | x = (int)(((data[3] & 0x0c) << 28) | (data[1] << 22)) >> 22; |
329 | y = (int)(((data[3] & 0x30) << 26) | (data[2] << 22)) >> 22; | |
128537ce | 330 | clicks = data[3]; |
c61b7cee CD |
331 | |
332 | /* The following bits provide a device specific timestamp. They | |
333 | * are unused here. | |
334 | * | |
335 | * ts = data[3] >> 6 | data[4] << 2 | data[5] << 10; | |
336 | */ | |
128537ce | 337 | break; |
a462230e CD |
338 | case DOUBLE_REPORT_ID: |
339 | /* Sometimes the trackpad sends two touch reports in one | |
340 | * packet. | |
341 | */ | |
342 | magicmouse_raw_event(hdev, report, data + 2, data[1]); | |
343 | magicmouse_raw_event(hdev, report, data + 2 + data[1], | |
344 | size - 2 - data[1]); | |
345 | break; | |
128537ce MP |
346 | default: |
347 | return 0; | |
348 | } | |
349 | ||
a462230e CD |
350 | if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) { |
351 | magicmouse_emit_buttons(msc, clicks & 3); | |
352 | input_report_rel(input, REL_X, x); | |
353 | input_report_rel(input, REL_Y, y); | |
354 | } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ | |
355 | input_report_key(input, BTN_MOUSE, clicks & 1); | |
a6d1bc1d | 356 | input_mt_report_pointer_emulation(input, true); |
a462230e CD |
357 | } |
358 | ||
128537ce MP |
359 | input_sync(input); |
360 | return 1; | |
361 | } | |
362 | ||
a6d1bc1d | 363 | static int magicmouse_setup_input(struct input_dev *input, struct hid_device *hdev) |
128537ce | 364 | { |
a6d1bc1d YS |
365 | int error; |
366 | ||
71b38bd4 | 367 | __set_bit(EV_KEY, input->evbit); |
a462230e CD |
368 | |
369 | if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) { | |
370 | __set_bit(BTN_LEFT, input->keybit); | |
371 | __set_bit(BTN_RIGHT, input->keybit); | |
372 | if (emulate_3button) | |
373 | __set_bit(BTN_MIDDLE, input->keybit); | |
374 | ||
375 | __set_bit(EV_REL, input->evbit); | |
376 | __set_bit(REL_X, input->relbit); | |
377 | __set_bit(REL_Y, input->relbit); | |
378 | if (emulate_scroll_wheel) { | |
379 | __set_bit(REL_WHEEL, input->relbit); | |
380 | __set_bit(REL_HWHEEL, input->relbit); | |
381 | } | |
382 | } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ | |
bca62142 DV |
383 | /* input->keybit is initialized with incorrect button info |
384 | * for Magic Trackpad. There really is only one physical | |
385 | * button (BTN_LEFT == BTN_MOUSE). Make sure we don't | |
386 | * advertise buttons that don't exist... | |
387 | */ | |
388 | __clear_bit(BTN_RIGHT, input->keybit); | |
389 | __clear_bit(BTN_MIDDLE, input->keybit); | |
a462230e CD |
390 | __set_bit(BTN_MOUSE, input->keybit); |
391 | __set_bit(BTN_TOOL_FINGER, input->keybit); | |
392 | __set_bit(BTN_TOOL_DOUBLETAP, input->keybit); | |
393 | __set_bit(BTN_TOOL_TRIPLETAP, input->keybit); | |
394 | __set_bit(BTN_TOOL_QUADTAP, input->keybit); | |
a6d1bc1d | 395 | __set_bit(BTN_TOOL_QUINTTAP, input->keybit); |
a462230e | 396 | __set_bit(BTN_TOUCH, input->keybit); |
503f7d53 CD |
397 | __set_bit(INPUT_PROP_POINTER, input->propbit); |
398 | __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); | |
c0426688 | 399 | } |
128537ce | 400 | |
cc5e0f08 | 401 | |
6264307e YS |
402 | __set_bit(EV_ABS, input->evbit); |
403 | ||
b4adbbef | 404 | error = input_mt_init_slots(input, 16, 0); |
a6d1bc1d YS |
405 | if (error) |
406 | return error; | |
6264307e YS |
407 | input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255 << 2, |
408 | 4, 0); | |
409 | input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 255 << 2, | |
410 | 4, 0); | |
411 | input_set_abs_params(input, ABS_MT_ORIENTATION, -31, 32, 1, 0); | |
412 | ||
413 | /* Note: Touch Y position from the device is inverted relative | |
414 | * to how pointer motion is reported (and relative to how USB | |
415 | * HID recommends the coordinates work). This driver keeps | |
416 | * the origin at the same position, and just uses the additive | |
417 | * inverse of the reported Y. | |
418 | */ | |
419 | if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) { | |
420 | input_set_abs_params(input, ABS_MT_POSITION_X, | |
421 | MOUSE_MIN_X, MOUSE_MAX_X, 4, 0); | |
422 | input_set_abs_params(input, ABS_MT_POSITION_Y, | |
423 | MOUSE_MIN_Y, MOUSE_MAX_Y, 4, 0); | |
424 | ||
425 | input_abs_set_res(input, ABS_MT_POSITION_X, | |
426 | MOUSE_RES_X); | |
427 | input_abs_set_res(input, ABS_MT_POSITION_Y, | |
428 | MOUSE_RES_Y); | |
429 | } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ | |
430 | input_set_abs_params(input, ABS_X, TRACKPAD_MIN_X, | |
431 | TRACKPAD_MAX_X, 4, 0); | |
432 | input_set_abs_params(input, ABS_Y, TRACKPAD_MIN_Y, | |
433 | TRACKPAD_MAX_Y, 4, 0); | |
434 | input_set_abs_params(input, ABS_MT_POSITION_X, | |
435 | TRACKPAD_MIN_X, TRACKPAD_MAX_X, 4, 0); | |
436 | input_set_abs_params(input, ABS_MT_POSITION_Y, | |
437 | TRACKPAD_MIN_Y, TRACKPAD_MAX_Y, 4, 0); | |
438 | ||
439 | input_abs_set_res(input, ABS_X, TRACKPAD_RES_X); | |
440 | input_abs_set_res(input, ABS_Y, TRACKPAD_RES_Y); | |
441 | input_abs_set_res(input, ABS_MT_POSITION_X, | |
442 | TRACKPAD_RES_X); | |
443 | input_abs_set_res(input, ABS_MT_POSITION_Y, | |
444 | TRACKPAD_RES_Y); | |
128537ce MP |
445 | } |
446 | ||
6264307e YS |
447 | input_set_events_per_packet(input, 60); |
448 | ||
128537ce | 449 | if (report_undeciphered) { |
71b38bd4 MP |
450 | __set_bit(EV_MSC, input->evbit); |
451 | __set_bit(MSC_RAW, input->mscbit); | |
128537ce | 452 | } |
a6d1bc1d YS |
453 | |
454 | return 0; | |
128537ce MP |
455 | } |
456 | ||
64eb105d MP |
457 | static int magicmouse_input_mapping(struct hid_device *hdev, |
458 | struct hid_input *hi, struct hid_field *field, | |
459 | struct hid_usage *usage, unsigned long **bit, int *max) | |
460 | { | |
461 | struct magicmouse_sc *msc = hid_get_drvdata(hdev); | |
462 | ||
463 | if (!msc->input) | |
464 | msc->input = hi->input; | |
465 | ||
6a66bbd6 CD |
466 | /* Magic Trackpad does not give relative data after switching to MT */ |
467 | if (hi->input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD && | |
468 | field->flags & HID_MAIN_ITEM_RELATIVE) | |
469 | return -1; | |
470 | ||
64eb105d MP |
471 | return 0; |
472 | } | |
473 | ||
f1a9a149 BT |
474 | static void magicmouse_input_configured(struct hid_device *hdev, |
475 | struct hid_input *hi) | |
476 | ||
477 | { | |
478 | struct magicmouse_sc *msc = hid_get_drvdata(hdev); | |
479 | ||
480 | int ret = magicmouse_setup_input(msc->input, hdev); | |
481 | if (ret) { | |
482 | hid_err(hdev, "magicmouse setup input failed (%d)\n", ret); | |
483 | /* clean msc->input to notify probe() of the failure */ | |
484 | msc->input = NULL; | |
485 | } | |
486 | } | |
487 | ||
488 | ||
128537ce MP |
489 | static int magicmouse_probe(struct hid_device *hdev, |
490 | const struct hid_device_id *id) | |
491 | { | |
0773590c | 492 | __u8 feature[] = { 0xd7, 0x01 }; |
128537ce MP |
493 | struct magicmouse_sc *msc; |
494 | struct hid_report *report; | |
495 | int ret; | |
496 | ||
abf832bf | 497 | msc = devm_kzalloc(&hdev->dev, sizeof(*msc), GFP_KERNEL); |
128537ce | 498 | if (msc == NULL) { |
4291ee30 | 499 | hid_err(hdev, "can't alloc magicmouse descriptor\n"); |
128537ce MP |
500 | return -ENOMEM; |
501 | } | |
502 | ||
0b778e76 CD |
503 | msc->scroll_accel = SCROLL_ACCEL_DEFAULT; |
504 | ||
128537ce MP |
505 | msc->quirks = id->driver_data; |
506 | hid_set_drvdata(hdev, msc); | |
507 | ||
508 | ret = hid_parse(hdev); | |
509 | if (ret) { | |
4291ee30 | 510 | hid_err(hdev, "magicmouse hid parse failed\n"); |
abf832bf | 511 | return ret; |
128537ce MP |
512 | } |
513 | ||
23d02116 | 514 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
128537ce | 515 | if (ret) { |
4291ee30 | 516 | hid_err(hdev, "magicmouse hw start failed\n"); |
abf832bf | 517 | return ret; |
128537ce MP |
518 | } |
519 | ||
f1a9a149 BT |
520 | if (!msc->input) { |
521 | hid_err(hdev, "magicmouse input not registered\n"); | |
522 | ret = -ENOMEM; | |
523 | goto err_stop_hw; | |
a6d1bc1d | 524 | } |
23d02116 | 525 | |
a462230e CD |
526 | if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE) |
527 | report = hid_register_report(hdev, HID_INPUT_REPORT, | |
528 | MOUSE_REPORT_ID); | |
529 | else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ | |
530 | report = hid_register_report(hdev, HID_INPUT_REPORT, | |
531 | TRACKPAD_REPORT_ID); | |
532 | report = hid_register_report(hdev, HID_INPUT_REPORT, | |
533 | DOUBLE_REPORT_ID); | |
534 | } | |
535 | ||
128537ce | 536 | if (!report) { |
4291ee30 | 537 | hid_err(hdev, "unable to register touch report\n"); |
128537ce | 538 | ret = -ENOMEM; |
71b38bd4 | 539 | goto err_stop_hw; |
128537ce MP |
540 | } |
541 | report->size = 6; | |
542 | ||
35d851df JK |
543 | /* |
544 | * Some devices repond with 'invalid report id' when feature | |
545 | * report switching it into multitouch mode is sent to it. | |
546 | * | |
547 | * This results in -EIO from the _raw low-level transport callback, | |
548 | * but there seems to be no other way of switching the mode. | |
549 | * Thus the super-ugly hacky success check below. | |
550 | */ | |
b0dd72aa BT |
551 | ret = hid_hw_raw_request(hdev, feature[0], feature, sizeof(feature), |
552 | HID_FEATURE_REPORT, HID_REQ_SET_REPORT); | |
35d851df | 553 | if (ret != -EIO && ret != sizeof(feature)) { |
4291ee30 | 554 | hid_err(hdev, "unable to request touch data (%d)\n", ret); |
71b38bd4 | 555 | goto err_stop_hw; |
128537ce MP |
556 | } |
557 | ||
128537ce | 558 | return 0; |
71b38bd4 MP |
559 | err_stop_hw: |
560 | hid_hw_stop(hdev); | |
128537ce MP |
561 | return ret; |
562 | } | |
563 | ||
128537ce | 564 | static const struct hid_device_id magic_mice[] = { |
a462230e CD |
565 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, |
566 | USB_DEVICE_ID_APPLE_MAGICMOUSE), .driver_data = 0 }, | |
567 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, | |
568 | USB_DEVICE_ID_APPLE_MAGICTRACKPAD), .driver_data = 0 }, | |
128537ce MP |
569 | { } |
570 | }; | |
571 | MODULE_DEVICE_TABLE(hid, magic_mice); | |
572 | ||
573 | static struct hid_driver magicmouse_driver = { | |
574 | .name = "magicmouse", | |
575 | .id_table = magic_mice, | |
576 | .probe = magicmouse_probe, | |
128537ce | 577 | .raw_event = magicmouse_raw_event, |
64eb105d | 578 | .input_mapping = magicmouse_input_mapping, |
f1a9a149 | 579 | .input_configured = magicmouse_input_configured, |
128537ce | 580 | }; |
f425458e | 581 | module_hid_driver(magicmouse_driver); |
128537ce | 582 | |
128537ce | 583 | MODULE_LICENSE("GPL"); |