1 | /* |
2 | * Force feedback support for Logitech Gaming Wheels |
3 | * |
4 | * Including G27, G25, DFP, DFGT, FFEX, Momo, Momo2 & |
5 | * Speed Force Wireless (WiiWheel) |
6 | * |
7 | * Copyright (c) 2010 Simon Wood <simon@mungewell.org> |
8 | */ |
9 | |
10 | /* |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of the GNU General Public License as published by |
13 | * the Free Software Foundation; either version 2 of the License, or |
14 | * (at your option) any later version. |
15 | * |
16 | * This program is distributed in the hope that it will be useful, |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
19 | * GNU General Public License for more details. |
20 | * |
21 | * You should have received a copy of the GNU General Public License |
22 | * along with this program; if not, write to the Free Software |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
24 | */ |
25 | |
26 | |
27 | #include <linux/input.h> |
28 | #include <linux/usb.h> |
29 | #include <linux/hid.h> |
30 | |
31 | #include "usbhid/usbhid.h" |
32 | #include "hid-lg.h" |
33 | #include "hid-lg4ff.h" |
34 | #include "hid-ids.h" |
35 | |
36 | #define LG4FF_MMODE_IS_MULTIMODE 0 |
37 | #define LG4FF_MMODE_SWITCHED 1 |
38 | #define LG4FF_MMODE_NOT_MULTIMODE 2 |
39 | |
40 | #define LG4FF_MODE_NATIVE_IDX 0 |
41 | #define LG4FF_MODE_DFEX_IDX 1 |
42 | #define LG4FF_MODE_DFP_IDX 2 |
43 | #define LG4FF_MODE_G25_IDX 3 |
44 | #define LG4FF_MODE_DFGT_IDX 4 |
45 | #define LG4FF_MODE_G27_IDX 5 |
46 | #define LG4FF_MODE_G29_IDX 6 |
47 | #define LG4FF_MODE_MAX_IDX 7 |
48 | |
49 | #define LG4FF_MODE_NATIVE BIT(LG4FF_MODE_NATIVE_IDX) |
50 | #define LG4FF_MODE_DFEX BIT(LG4FF_MODE_DFEX_IDX) |
51 | #define LG4FF_MODE_DFP BIT(LG4FF_MODE_DFP_IDX) |
52 | #define LG4FF_MODE_G25 BIT(LG4FF_MODE_G25_IDX) |
53 | #define LG4FF_MODE_DFGT BIT(LG4FF_MODE_DFGT_IDX) |
54 | #define LG4FF_MODE_G27 BIT(LG4FF_MODE_G27_IDX) |
55 | #define LG4FF_MODE_G29 BIT(LG4FF_MODE_G29_IDX) |
56 | |
57 | #define LG4FF_DFEX_TAG "DF-EX" |
58 | #define LG4FF_DFEX_NAME "Driving Force / Formula EX" |
59 | #define LG4FF_DFP_TAG "DFP" |
60 | #define LG4FF_DFP_NAME "Driving Force Pro" |
61 | #define LG4FF_G25_TAG "G25" |
62 | #define LG4FF_G25_NAME "G25 Racing Wheel" |
63 | #define LG4FF_G27_TAG "G27" |
64 | #define LG4FF_G27_NAME "G27 Racing Wheel" |
65 | #define LG4FF_G29_TAG "G29" |
66 | #define LG4FF_G29_NAME "G29 Racing Wheel" |
67 | #define LG4FF_DFGT_TAG "DFGT" |
68 | #define LG4FF_DFGT_NAME "Driving Force GT" |
69 | |
70 | #define LG4FF_FFEX_REV_MAJ 0x21 |
71 | #define LG4FF_FFEX_REV_MIN 0x00 |
72 | |
73 | static void lg4ff_set_range_dfp(struct hid_device *hid, u16 range); |
74 | static void lg4ff_set_range_g25(struct hid_device *hid, u16 range); |
75 | |
76 | struct lg4ff_wheel_data { |
77 | const u32 product_id; |
78 | u16 combine; |
79 | u16 range; |
80 | const u16 min_range; |
81 | const u16 max_range; |
82 | #ifdef CONFIG_LEDS_CLASS |
83 | u8 led_state; |
84 | struct led_classdev *led[5]; |
85 | #endif |
86 | const u32 alternate_modes; |
87 | const char * const real_tag; |
88 | const char * const real_name; |
89 | const u16 real_product_id; |
90 | |
91 | void (*set_range)(struct hid_device *hid, u16 range); |
92 | }; |
93 | |
94 | struct lg4ff_device_entry { |
95 | spinlock_t report_lock; /* Protect output HID report */ |
96 | struct hid_report *report; |
97 | struct lg4ff_wheel_data wdata; |
98 | }; |
99 | |
100 | static const signed short lg4ff_wheel_effects[] = { |
101 | FF_CONSTANT, |
102 | FF_AUTOCENTER, |
103 | -1 |
104 | }; |
105 | |
106 | static const signed short no_wheel_effects[] = { |
107 | -1 |
108 | }; |
109 | |
110 | struct lg4ff_wheel { |
111 | const u32 product_id; |
112 | const signed short *ff_effects; |
113 | const u16 min_range; |
114 | const u16 max_range; |
115 | void (*set_range)(struct hid_device *hid, u16 range); |
116 | }; |
117 | |
118 | struct lg4ff_compat_mode_switch { |
119 | const u8 cmd_count; /* Number of commands to send */ |
120 | const u8 cmd[]; |
121 | }; |
122 | |
123 | struct lg4ff_wheel_ident_info { |
124 | const u32 modes; |
125 | const u16 mask; |
126 | const u16 result; |
127 | const u16 real_product_id; |
128 | }; |
129 | |
130 | struct lg4ff_multimode_wheel { |
131 | const u16 product_id; |
132 | const u32 alternate_modes; |
133 | const char *real_tag; |
134 | const char *real_name; |
135 | }; |
136 | |
137 | struct lg4ff_alternate_mode { |
138 | const u16 product_id; |
139 | const char *tag; |
140 | const char *name; |
141 | }; |
142 | |
143 | static const struct lg4ff_wheel lg4ff_devices[] = { |
144 | {USB_DEVICE_ID_LOGITECH_WINGMAN_FG, no_wheel_effects, 40, 180, NULL}, |
145 | {USB_DEVICE_ID_LOGITECH_WINGMAN_FFG, lg4ff_wheel_effects, 40, 180, NULL}, |
146 | {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
147 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
148 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_dfp}, |
149 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, |
150 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, |
151 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, |
152 | {USB_DEVICE_ID_LOGITECH_G29_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, |
153 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270, NULL}, |
154 | {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} |
155 | }; |
156 | |
157 | static const struct lg4ff_multimode_wheel lg4ff_multimode_wheels[] = { |
158 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, |
159 | LG4FF_MODE_NATIVE | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
160 | LG4FF_DFP_TAG, LG4FF_DFP_NAME}, |
161 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, |
162 | LG4FF_MODE_NATIVE | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
163 | LG4FF_G25_TAG, LG4FF_G25_NAME}, |
164 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, |
165 | LG4FF_MODE_NATIVE | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
166 | LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, |
167 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, |
168 | LG4FF_MODE_NATIVE | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
169 | LG4FF_G27_TAG, LG4FF_G27_NAME}, |
170 | {USB_DEVICE_ID_LOGITECH_G29_WHEEL, |
171 | LG4FF_MODE_NATIVE | LG4FF_MODE_G29 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
172 | LG4FF_G29_TAG, LG4FF_G29_NAME}, |
173 | }; |
174 | |
175 | static const struct lg4ff_alternate_mode lg4ff_alternate_modes[] = { |
176 | [LG4FF_MODE_NATIVE_IDX] = {0, "native" , "" }, |
177 | [LG4FF_MODE_DFEX_IDX] = {USB_DEVICE_ID_LOGITECH_WHEEL, LG4FF_DFEX_TAG, LG4FF_DFEX_NAME}, |
178 | [LG4FF_MODE_DFP_IDX] = {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, LG4FF_DFP_TAG, LG4FF_DFP_NAME}, |
179 | [LG4FF_MODE_G25_IDX] = {USB_DEVICE_ID_LOGITECH_G25_WHEEL, LG4FF_G25_TAG, LG4FF_G25_NAME}, |
180 | [LG4FF_MODE_DFGT_IDX] = {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, |
181 | [LG4FF_MODE_G27_IDX] = {USB_DEVICE_ID_LOGITECH_G27_WHEEL, LG4FF_G27_TAG, LG4FF_G27_NAME}, |
182 | [LG4FF_MODE_G29_IDX] = {USB_DEVICE_ID_LOGITECH_G29_WHEEL, LG4FF_G29_TAG, LG4FF_G29_NAME}, |
183 | }; |
184 | |
185 | /* Multimode wheel identificators */ |
186 | static const struct lg4ff_wheel_ident_info lg4ff_dfp_ident_info = { |
187 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
188 | 0xf000, |
189 | 0x1000, |
190 | USB_DEVICE_ID_LOGITECH_DFP_WHEEL |
191 | }; |
192 | |
193 | static const struct lg4ff_wheel_ident_info lg4ff_g25_ident_info = { |
194 | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
195 | 0xff00, |
196 | 0x1200, |
197 | USB_DEVICE_ID_LOGITECH_G25_WHEEL |
198 | }; |
199 | |
200 | static const struct lg4ff_wheel_ident_info lg4ff_g27_ident_info = { |
201 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
202 | 0xfff0, |
203 | 0x1230, |
204 | USB_DEVICE_ID_LOGITECH_G27_WHEEL |
205 | }; |
206 | |
207 | static const struct lg4ff_wheel_ident_info lg4ff_dfgt_ident_info = { |
208 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
209 | 0xff00, |
210 | 0x1300, |
211 | USB_DEVICE_ID_LOGITECH_DFGT_WHEEL |
212 | }; |
213 | |
214 | static const struct lg4ff_wheel_ident_info lg4ff_g29_ident_info = { |
215 | LG4FF_MODE_G29 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
216 | 0xfff8, |
217 | 0x1350, |
218 | USB_DEVICE_ID_LOGITECH_G29_WHEEL |
219 | }; |
220 | |
221 | static const struct lg4ff_wheel_ident_info lg4ff_g29_ident_info2 = { |
222 | LG4FF_MODE_G29 | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, |
223 | 0xff00, |
224 | 0x8900, |
225 | USB_DEVICE_ID_LOGITECH_G29_WHEEL |
226 | }; |
227 | |
228 | /* Multimode wheel identification checklists */ |
229 | static const struct lg4ff_wheel_ident_info *lg4ff_main_checklist[] = { |
230 | &lg4ff_g29_ident_info, |
231 | &lg4ff_g29_ident_info2, |
232 | &lg4ff_dfgt_ident_info, |
233 | &lg4ff_g27_ident_info, |
234 | &lg4ff_g25_ident_info, |
235 | &lg4ff_dfp_ident_info |
236 | }; |
237 | |
238 | /* Compatibility mode switching commands */ |
239 | /* EXT_CMD9 - Understood by G27 and DFGT */ |
240 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfex = { |
241 | 2, |
242 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
243 | 0xf8, 0x09, 0x00, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DF-EX with detach */ |
244 | }; |
245 | |
246 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfp = { |
247 | 2, |
248 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
249 | 0xf8, 0x09, 0x01, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFP with detach */ |
250 | }; |
251 | |
252 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g25 = { |
253 | 2, |
254 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
255 | 0xf8, 0x09, 0x02, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G25 with detach */ |
256 | }; |
257 | |
258 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfgt = { |
259 | 2, |
260 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
261 | 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFGT with detach */ |
262 | }; |
263 | |
264 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g27 = { |
265 | 2, |
266 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
267 | 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G27 with detach */ |
268 | }; |
269 | |
270 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g29 = { |
271 | 2, |
272 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
273 | 0xf8, 0x09, 0x05, 0x01, 0x01, 0x00, 0x00} /* Switch mode to G29 with detach */ |
274 | }; |
275 | |
276 | /* EXT_CMD1 - Understood by DFP, G25, G27 and DFGT */ |
277 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext01_dfp = { |
278 | 1, |
279 | {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} |
280 | }; |
281 | |
282 | /* EXT_CMD16 - Understood by G25 and G27 */ |
283 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext16_g25 = { |
284 | 1, |
285 | {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} |
286 | }; |
287 | |
288 | /* Recalculates X axis value accordingly to currently selected range */ |
289 | static s32 lg4ff_adjust_dfp_x_axis(s32 value, u16 range) |
290 | { |
291 | u16 max_range; |
292 | s32 new_value; |
293 | |
294 | if (range == 900) |
295 | return value; |
296 | else if (range == 200) |
297 | return value; |
298 | else if (range < 200) |
299 | max_range = 200; |
300 | else |
301 | max_range = 900; |
302 | |
303 | new_value = 8192 + mult_frac(value - 8192, max_range, range); |
304 | if (new_value < 0) |
305 | return 0; |
306 | else if (new_value > 16383) |
307 | return 16383; |
308 | else |
309 | return new_value; |
310 | } |
311 | |
312 | int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_field *field, |
313 | struct hid_usage *usage, s32 value, struct lg_drv_data *drv_data) |
314 | { |
315 | struct lg4ff_device_entry *entry = drv_data->device_props; |
316 | s32 new_value = 0; |
317 | |
318 | if (!entry) { |
319 | hid_err(hid, "Device properties not found" ); |
320 | return 0; |
321 | } |
322 | |
323 | switch (entry->wdata.product_id) { |
324 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
325 | switch (usage->code) { |
326 | case ABS_X: |
327 | new_value = lg4ff_adjust_dfp_x_axis(value, entry->wdata.range); |
328 | input_event(field->hidinput->input, usage->type, usage->code, new_value); |
329 | return 1; |
330 | default: |
331 | return 0; |
332 | } |
333 | default: |
334 | return 0; |
335 | } |
336 | } |
337 | |
338 | int lg4ff_raw_event(struct hid_device *hdev, struct hid_report *report, |
339 | u8 *rd, int size, struct lg_drv_data *drv_data) |
340 | { |
341 | int offset; |
342 | struct lg4ff_device_entry *entry = drv_data->device_props; |
343 | |
344 | if (!entry) |
345 | return 0; |
346 | |
347 | /* adjust HID report present combined pedals data */ |
348 | if (entry->wdata.combine) { |
349 | switch (entry->wdata.product_id) { |
350 | case USB_DEVICE_ID_LOGITECH_WHEEL: |
351 | rd[5] = rd[3]; |
352 | rd[6] = 0x7F; |
353 | return 1; |
354 | case USB_DEVICE_ID_LOGITECH_WINGMAN_FG: |
355 | case USB_DEVICE_ID_LOGITECH_WINGMAN_FFG: |
356 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL: |
357 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2: |
358 | rd[4] = rd[3]; |
359 | rd[5] = 0x7F; |
360 | return 1; |
361 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
362 | rd[5] = rd[4]; |
363 | rd[6] = 0x7F; |
364 | return 1; |
365 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
366 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: |
367 | offset = 5; |
368 | break; |
369 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: |
370 | case USB_DEVICE_ID_LOGITECH_G29_WHEEL: |
371 | offset = 6; |
372 | break; |
373 | case USB_DEVICE_ID_LOGITECH_WII_WHEEL: |
374 | offset = 3; |
375 | break; |
376 | default: |
377 | return 0; |
378 | } |
379 | |
380 | /* Compute a combined axis when wheel does not supply it */ |
381 | rd[offset] = (0xFF + rd[offset] - rd[offset+1]) >> 1; |
382 | rd[offset+1] = 0x7F; |
383 | return 1; |
384 | } |
385 | |
386 | return 0; |
387 | } |
388 | |
389 | static void lg4ff_init_wheel_data(struct lg4ff_wheel_data * const wdata, const struct lg4ff_wheel *wheel, |
390 | const struct lg4ff_multimode_wheel *mmode_wheel, |
391 | const u16 real_product_id) |
392 | { |
393 | u32 alternate_modes = 0; |
394 | const char *real_tag = NULL; |
395 | const char *real_name = NULL; |
396 | |
397 | if (mmode_wheel) { |
398 | alternate_modes = mmode_wheel->alternate_modes; |
399 | real_tag = mmode_wheel->real_tag; |
400 | real_name = mmode_wheel->real_name; |
401 | } |
402 | |
403 | { |
404 | struct lg4ff_wheel_data t_wdata = { .product_id = wheel->product_id, |
405 | .real_product_id = real_product_id, |
406 | .combine = 0, |
407 | .min_range = wheel->min_range, |
408 | .max_range = wheel->max_range, |
409 | .set_range = wheel->set_range, |
410 | .alternate_modes = alternate_modes, |
411 | .real_tag = real_tag, |
412 | .real_name = real_name }; |
413 | |
414 | memcpy(wdata, &t_wdata, sizeof(t_wdata)); |
415 | } |
416 | } |
417 | |
418 | static int lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
419 | { |
420 | struct hid_device *hid = input_get_drvdata(dev); |
421 | struct lg4ff_device_entry *entry; |
422 | struct lg_drv_data *drv_data; |
423 | unsigned long flags; |
424 | s32 *value; |
425 | int x; |
426 | |
427 | drv_data = hid_get_drvdata(hid); |
428 | if (!drv_data) { |
429 | hid_err(hid, "Private driver data not found!\n" ); |
430 | return -EINVAL; |
431 | } |
432 | |
433 | entry = drv_data->device_props; |
434 | if (!entry) { |
435 | hid_err(hid, "Device properties not found!\n" ); |
436 | return -EINVAL; |
437 | } |
438 | value = entry->report->field[0]->value; |
439 | |
440 | #define CLAMP(x) do { if (x < 0) x = 0; else if (x > 0xff) x = 0xff; } while (0) |
441 | |
442 | switch (effect->type) { |
443 | case FF_CONSTANT: |
444 | x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ |
445 | CLAMP(x); |
446 | |
447 | spin_lock_irqsave(&entry->report_lock, flags); |
448 | if (x == 0x80) { |
449 | /* De-activate force in slot-1*/ |
450 | value[0] = 0x13; |
451 | value[1] = 0x00; |
452 | value[2] = 0x00; |
453 | value[3] = 0x00; |
454 | value[4] = 0x00; |
455 | value[5] = 0x00; |
456 | value[6] = 0x00; |
457 | |
458 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
459 | spin_unlock_irqrestore(&entry->report_lock, flags); |
460 | return 0; |
461 | } |
462 | |
463 | value[0] = 0x11; /* Slot 1 */ |
464 | value[1] = 0x08; |
465 | value[2] = x; |
466 | value[3] = 0x80; |
467 | value[4] = 0x00; |
468 | value[5] = 0x00; |
469 | value[6] = 0x00; |
470 | |
471 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
472 | spin_unlock_irqrestore(&entry->report_lock, flags); |
473 | break; |
474 | } |
475 | return 0; |
476 | } |
477 | |
478 | /* Sends default autocentering command compatible with |
479 | * all wheels except Formula Force EX */ |
480 | static void lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude) |
481 | { |
482 | struct hid_device *hid = input_get_drvdata(dev); |
483 | s32 *value; |
484 | u32 expand_a, expand_b; |
485 | struct lg4ff_device_entry *entry; |
486 | struct lg_drv_data *drv_data; |
487 | unsigned long flags; |
488 | |
489 | drv_data = hid_get_drvdata(hid); |
490 | if (!drv_data) { |
491 | hid_err(hid, "Private driver data not found!\n" ); |
492 | return; |
493 | } |
494 | |
495 | entry = drv_data->device_props; |
496 | if (!entry) { |
497 | hid_err(hid, "Device properties not found!\n" ); |
498 | return; |
499 | } |
500 | value = entry->report->field[0]->value; |
501 | |
502 | /* De-activate Auto-Center */ |
503 | spin_lock_irqsave(&entry->report_lock, flags); |
504 | if (magnitude == 0) { |
505 | value[0] = 0xf5; |
506 | value[1] = 0x00; |
507 | value[2] = 0x00; |
508 | value[3] = 0x00; |
509 | value[4] = 0x00; |
510 | value[5] = 0x00; |
511 | value[6] = 0x00; |
512 | |
513 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
514 | spin_unlock_irqrestore(&entry->report_lock, flags); |
515 | return; |
516 | } |
517 | |
518 | if (magnitude <= 0xaaaa) { |
519 | expand_a = 0x0c * magnitude; |
520 | expand_b = 0x80 * magnitude; |
521 | } else { |
522 | expand_a = (0x0c * 0xaaaa) + 0x06 * (magnitude - 0xaaaa); |
523 | expand_b = (0x80 * 0xaaaa) + 0xff * (magnitude - 0xaaaa); |
524 | } |
525 | |
526 | /* Adjust for non-MOMO wheels */ |
527 | switch (entry->wdata.product_id) { |
528 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL: |
529 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2: |
530 | break; |
531 | default: |
532 | expand_a = expand_a >> 1; |
533 | break; |
534 | } |
535 | |
536 | value[0] = 0xfe; |
537 | value[1] = 0x0d; |
538 | value[2] = expand_a / 0xaaaa; |
539 | value[3] = expand_a / 0xaaaa; |
540 | value[4] = expand_b / 0xaaaa; |
541 | value[5] = 0x00; |
542 | value[6] = 0x00; |
543 | |
544 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
545 | |
546 | /* Activate Auto-Center */ |
547 | value[0] = 0x14; |
548 | value[1] = 0x00; |
549 | value[2] = 0x00; |
550 | value[3] = 0x00; |
551 | value[4] = 0x00; |
552 | value[5] = 0x00; |
553 | value[6] = 0x00; |
554 | |
555 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
556 | spin_unlock_irqrestore(&entry->report_lock, flags); |
557 | } |
558 | |
559 | /* Sends autocentering command compatible with Formula Force EX */ |
560 | static void lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude) |
561 | { |
562 | struct hid_device *hid = input_get_drvdata(dev); |
563 | struct lg4ff_device_entry *entry; |
564 | struct lg_drv_data *drv_data; |
565 | unsigned long flags; |
566 | s32 *value; |
567 | magnitude = magnitude * 90 / 65535; |
568 | |
569 | drv_data = hid_get_drvdata(hid); |
570 | if (!drv_data) { |
571 | hid_err(hid, "Private driver data not found!\n" ); |
572 | return; |
573 | } |
574 | |
575 | entry = drv_data->device_props; |
576 | if (!entry) { |
577 | hid_err(hid, "Device properties not found!\n" ); |
578 | return; |
579 | } |
580 | value = entry->report->field[0]->value; |
581 | |
582 | spin_lock_irqsave(&entry->report_lock, flags); |
583 | value[0] = 0xfe; |
584 | value[1] = 0x03; |
585 | value[2] = magnitude >> 14; |
586 | value[3] = magnitude >> 14; |
587 | value[4] = magnitude; |
588 | value[5] = 0x00; |
589 | value[6] = 0x00; |
590 | |
591 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
592 | spin_unlock_irqrestore(&entry->report_lock, flags); |
593 | } |
594 | |
595 | /* Sends command to set range compatible with G25/G27/Driving Force GT */ |
596 | static void lg4ff_set_range_g25(struct hid_device *hid, u16 range) |
597 | { |
598 | struct lg4ff_device_entry *entry; |
599 | struct lg_drv_data *drv_data; |
600 | unsigned long flags; |
601 | s32 *value; |
602 | |
603 | drv_data = hid_get_drvdata(hid); |
604 | if (!drv_data) { |
605 | hid_err(hid, "Private driver data not found!\n" ); |
606 | return; |
607 | } |
608 | |
609 | entry = drv_data->device_props; |
610 | if (!entry) { |
611 | hid_err(hid, "Device properties not found!\n" ); |
612 | return; |
613 | } |
614 | value = entry->report->field[0]->value; |
615 | dbg_hid("G25/G27/DFGT: setting range to %u\n" , range); |
616 | |
617 | spin_lock_irqsave(&entry->report_lock, flags); |
618 | value[0] = 0xf8; |
619 | value[1] = 0x81; |
620 | value[2] = range & 0x00ff; |
621 | value[3] = (range & 0xff00) >> 8; |
622 | value[4] = 0x00; |
623 | value[5] = 0x00; |
624 | value[6] = 0x00; |
625 | |
626 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
627 | spin_unlock_irqrestore(&entry->report_lock, flags); |
628 | } |
629 | |
630 | /* Sends commands to set range compatible with Driving Force Pro wheel */ |
631 | static void lg4ff_set_range_dfp(struct hid_device *hid, u16 range) |
632 | { |
633 | struct lg4ff_device_entry *entry; |
634 | struct lg_drv_data *drv_data; |
635 | unsigned long flags; |
636 | int start_left, start_right, full_range; |
637 | s32 *value; |
638 | |
639 | drv_data = hid_get_drvdata(hid); |
640 | if (!drv_data) { |
641 | hid_err(hid, "Private driver data not found!\n" ); |
642 | return; |
643 | } |
644 | |
645 | entry = drv_data->device_props; |
646 | if (!entry) { |
647 | hid_err(hid, "Device properties not found!\n" ); |
648 | return; |
649 | } |
650 | value = entry->report->field[0]->value; |
651 | dbg_hid("Driving Force Pro: setting range to %u\n" , range); |
652 | |
653 | /* Prepare "coarse" limit command */ |
654 | spin_lock_irqsave(&entry->report_lock, flags); |
655 | value[0] = 0xf8; |
656 | value[1] = 0x00; /* Set later */ |
657 | value[2] = 0x00; |
658 | value[3] = 0x00; |
659 | value[4] = 0x00; |
660 | value[5] = 0x00; |
661 | value[6] = 0x00; |
662 | |
663 | if (range > 200) { |
664 | value[1] = 0x03; |
665 | full_range = 900; |
666 | } else { |
667 | value[1] = 0x02; |
668 | full_range = 200; |
669 | } |
670 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
671 | |
672 | /* Prepare "fine" limit command */ |
673 | value[0] = 0x81; |
674 | value[1] = 0x0b; |
675 | value[2] = 0x00; |
676 | value[3] = 0x00; |
677 | value[4] = 0x00; |
678 | value[5] = 0x00; |
679 | value[6] = 0x00; |
680 | |
681 | if (range == 200 || range == 900) { /* Do not apply any fine limit */ |
682 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
683 | spin_unlock_irqrestore(&entry->report_lock, flags); |
684 | return; |
685 | } |
686 | |
687 | /* Construct fine limit command */ |
688 | start_left = (((full_range - range + 1) * 2047) / full_range); |
689 | start_right = 0xfff - start_left; |
690 | |
691 | value[2] = start_left >> 4; |
692 | value[3] = start_right >> 4; |
693 | value[4] = 0xff; |
694 | value[5] = (start_right & 0xe) << 4 | (start_left & 0xe); |
695 | value[6] = 0xff; |
696 | |
697 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
698 | spin_unlock_irqrestore(&entry->report_lock, flags); |
699 | } |
700 | |
701 | static const struct lg4ff_compat_mode_switch *lg4ff_get_mode_switch_command(const u16 real_product_id, const u16 target_product_id) |
702 | { |
703 | switch (real_product_id) { |
704 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
705 | switch (target_product_id) { |
706 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
707 | return &lg4ff_mode_switch_ext01_dfp; |
708 | /* DFP can only be switched to its native mode */ |
709 | default: |
710 | return NULL; |
711 | } |
712 | break; |
713 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
714 | switch (target_product_id) { |
715 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
716 | return &lg4ff_mode_switch_ext01_dfp; |
717 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
718 | return &lg4ff_mode_switch_ext16_g25; |
719 | /* G25 can only be switched to DFP mode or its native mode */ |
720 | default: |
721 | return NULL; |
722 | } |
723 | break; |
724 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: |
725 | switch (target_product_id) { |
726 | case USB_DEVICE_ID_LOGITECH_WHEEL: |
727 | return &lg4ff_mode_switch_ext09_dfex; |
728 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
729 | return &lg4ff_mode_switch_ext09_dfp; |
730 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
731 | return &lg4ff_mode_switch_ext09_g25; |
732 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: |
733 | return &lg4ff_mode_switch_ext09_g27; |
734 | /* G27 can only be switched to DF-EX, DFP, G25 or its native mode */ |
735 | default: |
736 | return NULL; |
737 | } |
738 | break; |
739 | case USB_DEVICE_ID_LOGITECH_G29_WHEEL: |
740 | switch (target_product_id) { |
741 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
742 | return &lg4ff_mode_switch_ext09_dfp; |
743 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: |
744 | return &lg4ff_mode_switch_ext09_dfgt; |
745 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: |
746 | return &lg4ff_mode_switch_ext09_g25; |
747 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: |
748 | return &lg4ff_mode_switch_ext09_g27; |
749 | case USB_DEVICE_ID_LOGITECH_G29_WHEEL: |
750 | return &lg4ff_mode_switch_ext09_g29; |
751 | /* G29 can only be switched to DF-EX, DFP, DFGT, G25, G27 or its native mode */ |
752 | default: |
753 | return NULL; |
754 | } |
755 | break; |
756 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: |
757 | switch (target_product_id) { |
758 | case USB_DEVICE_ID_LOGITECH_WHEEL: |
759 | return &lg4ff_mode_switch_ext09_dfex; |
760 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
761 | return &lg4ff_mode_switch_ext09_dfp; |
762 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: |
763 | return &lg4ff_mode_switch_ext09_dfgt; |
764 | /* DFGT can only be switched to DF-EX, DFP or its native mode */ |
765 | default: |
766 | return NULL; |
767 | } |
768 | break; |
769 | /* No other wheels have multiple modes */ |
770 | default: |
771 | return NULL; |
772 | } |
773 | } |
774 | |
775 | static int lg4ff_switch_compatibility_mode(struct hid_device *hid, const struct lg4ff_compat_mode_switch *s) |
776 | { |
777 | struct lg4ff_device_entry *entry; |
778 | struct lg_drv_data *drv_data; |
779 | unsigned long flags; |
780 | s32 *value; |
781 | u8 i; |
782 | |
783 | drv_data = hid_get_drvdata(hid); |
784 | if (!drv_data) { |
785 | hid_err(hid, "Private driver data not found!\n" ); |
786 | return -EINVAL; |
787 | } |
788 | |
789 | entry = drv_data->device_props; |
790 | if (!entry) { |
791 | hid_err(hid, "Device properties not found!\n" ); |
792 | return -EINVAL; |
793 | } |
794 | value = entry->report->field[0]->value; |
795 | |
796 | spin_lock_irqsave(&entry->report_lock, flags); |
797 | for (i = 0; i < s->cmd_count; i++) { |
798 | u8 j; |
799 | |
800 | for (j = 0; j < 7; j++) |
801 | value[j] = s->cmd[j + (7*i)]; |
802 | |
803 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
804 | } |
805 | spin_unlock_irqrestore(&entry->report_lock, flags); |
806 | hid_hw_wait(hid); |
807 | return 0; |
808 | } |
809 | |
810 | static ssize_t lg4ff_alternate_modes_show(struct device *dev, struct device_attribute *attr, char *buf) |
811 | { |
812 | struct hid_device *hid = to_hid_device(dev); |
813 | struct lg4ff_device_entry *entry; |
814 | struct lg_drv_data *drv_data; |
815 | ssize_t count = 0; |
816 | int i; |
817 | |
818 | drv_data = hid_get_drvdata(hid); |
819 | if (!drv_data) { |
820 | hid_err(hid, "Private driver data not found!\n" ); |
821 | return 0; |
822 | } |
823 | |
824 | entry = drv_data->device_props; |
825 | if (!entry) { |
826 | hid_err(hid, "Device properties not found!\n" ); |
827 | return 0; |
828 | } |
829 | |
830 | if (!entry->wdata.real_name) { |
831 | hid_err(hid, "NULL pointer to string\n" ); |
832 | return 0; |
833 | } |
834 | |
835 | for (i = 0; i < LG4FF_MODE_MAX_IDX; i++) { |
836 | if (entry->wdata.alternate_modes & BIT(i)) { |
837 | /* Print tag and full name */ |
838 | count += scnprintf(buf + count, PAGE_SIZE - count, "%s: %s" , |
839 | lg4ff_alternate_modes[i].tag, |
840 | !lg4ff_alternate_modes[i].product_id ? entry->wdata.real_name : lg4ff_alternate_modes[i].name); |
841 | if (count >= PAGE_SIZE - 1) |
842 | return count; |
843 | |
844 | /* Mark the currently active mode with an asterisk */ |
845 | if (lg4ff_alternate_modes[i].product_id == entry->wdata.product_id || |
846 | (lg4ff_alternate_modes[i].product_id == 0 && entry->wdata.product_id == entry->wdata.real_product_id)) |
847 | count += scnprintf(buf + count, PAGE_SIZE - count, " *\n" ); |
848 | else |
849 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n" ); |
850 | |
851 | if (count >= PAGE_SIZE - 1) |
852 | return count; |
853 | } |
854 | } |
855 | |
856 | return count; |
857 | } |
858 | |
859 | static ssize_t lg4ff_alternate_modes_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
860 | { |
861 | struct hid_device *hid = to_hid_device(dev); |
862 | struct lg4ff_device_entry *entry; |
863 | struct lg_drv_data *drv_data; |
864 | const struct lg4ff_compat_mode_switch *s; |
865 | u16 target_product_id = 0; |
866 | int i, ret; |
867 | char *lbuf; |
868 | |
869 | drv_data = hid_get_drvdata(hid); |
870 | if (!drv_data) { |
871 | hid_err(hid, "Private driver data not found!\n" ); |
872 | return -EINVAL; |
873 | } |
874 | |
875 | entry = drv_data->device_props; |
876 | if (!entry) { |
877 | hid_err(hid, "Device properties not found!\n" ); |
878 | return -EINVAL; |
879 | } |
880 | |
881 | /* Allow \n at the end of the input parameter */ |
882 | lbuf = kasprintf(GFP_KERNEL, "%s" , buf); |
883 | if (!lbuf) |
884 | return -ENOMEM; |
885 | |
886 | i = strlen(lbuf); |
887 | if (lbuf[i-1] == '\n') { |
888 | if (i == 1) { |
889 | kfree(lbuf); |
890 | return -EINVAL; |
891 | } |
892 | lbuf[i-1] = '\0'; |
893 | } |
894 | |
895 | for (i = 0; i < LG4FF_MODE_MAX_IDX; i++) { |
896 | const u16 mode_product_id = lg4ff_alternate_modes[i].product_id; |
897 | const char *tag = lg4ff_alternate_modes[i].tag; |
898 | |
899 | if (entry->wdata.alternate_modes & BIT(i)) { |
900 | if (!strcmp(tag, lbuf)) { |
901 | if (!mode_product_id) |
902 | target_product_id = entry->wdata.real_product_id; |
903 | else |
904 | target_product_id = mode_product_id; |
905 | break; |
906 | } |
907 | } |
908 | } |
909 | |
910 | if (i == LG4FF_MODE_MAX_IDX) { |
911 | hid_info(hid, "Requested mode \"%s\" is not supported by the device\n" , lbuf); |
912 | kfree(lbuf); |
913 | return -EINVAL; |
914 | } |
915 | kfree(lbuf); /* Not needed anymore */ |
916 | |
917 | if (target_product_id == entry->wdata.product_id) /* Nothing to do */ |
918 | return count; |
919 | |
920 | /* Automatic switching has to be disabled for the switch to DF-EX mode to work correctly */ |
921 | if (target_product_id == USB_DEVICE_ID_LOGITECH_WHEEL && !lg4ff_no_autoswitch) { |
922 | hid_info(hid, "\"%s\" cannot be switched to \"DF-EX\" mode. Load the \"hid_logitech\" module with \"lg4ff_no_autoswitch=1\" parameter set and try again\n" , |
923 | entry->wdata.real_name); |
924 | return -EINVAL; |
925 | } |
926 | |
927 | /* Take care of hardware limitations */ |
928 | if ((entry->wdata.real_product_id == USB_DEVICE_ID_LOGITECH_DFP_WHEEL || entry->wdata.real_product_id == USB_DEVICE_ID_LOGITECH_G25_WHEEL) && |
929 | entry->wdata.product_id > target_product_id) { |
930 | hid_info(hid, "\"%s\" cannot be switched back into \"%s\" mode\n" , entry->wdata.real_name, lg4ff_alternate_modes[i].name); |
931 | return -EINVAL; |
932 | } |
933 | |
934 | s = lg4ff_get_mode_switch_command(entry->wdata.real_product_id, target_product_id); |
935 | if (!s) { |
936 | hid_err(hid, "Invalid target product ID %X\n" , target_product_id); |
937 | return -EINVAL; |
938 | } |
939 | |
940 | ret = lg4ff_switch_compatibility_mode(hid, s); |
941 | return (ret == 0 ? count : ret); |
942 | } |
943 | static DEVICE_ATTR(alternate_modes, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, lg4ff_alternate_modes_show, lg4ff_alternate_modes_store); |
944 | |
945 | static ssize_t lg4ff_combine_show(struct device *dev, struct device_attribute *attr, |
946 | char *buf) |
947 | { |
948 | struct hid_device *hid = to_hid_device(dev); |
949 | struct lg4ff_device_entry *entry; |
950 | struct lg_drv_data *drv_data; |
951 | size_t count; |
952 | |
953 | drv_data = hid_get_drvdata(hid); |
954 | if (!drv_data) { |
955 | hid_err(hid, "Private driver data not found!\n" ); |
956 | return 0; |
957 | } |
958 | |
959 | entry = drv_data->device_props; |
960 | if (!entry) { |
961 | hid_err(hid, "Device properties not found!\n" ); |
962 | return 0; |
963 | } |
964 | |
965 | count = scnprintf(buf, PAGE_SIZE, "%u\n" , entry->wdata.combine); |
966 | return count; |
967 | } |
968 | |
969 | static ssize_t lg4ff_combine_store(struct device *dev, struct device_attribute *attr, |
970 | const char *buf, size_t count) |
971 | { |
972 | struct hid_device *hid = to_hid_device(dev); |
973 | struct lg4ff_device_entry *entry; |
974 | struct lg_drv_data *drv_data; |
975 | u16 combine = simple_strtoul(buf, NULL, 10); |
976 | |
977 | drv_data = hid_get_drvdata(hid); |
978 | if (!drv_data) { |
979 | hid_err(hid, "Private driver data not found!\n" ); |
980 | return -EINVAL; |
981 | } |
982 | |
983 | entry = drv_data->device_props; |
984 | if (!entry) { |
985 | hid_err(hid, "Device properties not found!\n" ); |
986 | return -EINVAL; |
987 | } |
988 | |
989 | if (combine > 1) |
990 | combine = 1; |
991 | |
992 | entry->wdata.combine = combine; |
993 | return count; |
994 | } |
995 | static DEVICE_ATTR(combine_pedals, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, lg4ff_combine_show, lg4ff_combine_store); |
996 | |
997 | /* Export the currently set range of the wheel */ |
998 | static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, |
999 | char *buf) |
1000 | { |
1001 | struct hid_device *hid = to_hid_device(dev); |
1002 | struct lg4ff_device_entry *entry; |
1003 | struct lg_drv_data *drv_data; |
1004 | size_t count; |
1005 | |
1006 | drv_data = hid_get_drvdata(hid); |
1007 | if (!drv_data) { |
1008 | hid_err(hid, "Private driver data not found!\n" ); |
1009 | return 0; |
1010 | } |
1011 | |
1012 | entry = drv_data->device_props; |
1013 | if (!entry) { |
1014 | hid_err(hid, "Device properties not found!\n" ); |
1015 | return 0; |
1016 | } |
1017 | |
1018 | count = scnprintf(buf, PAGE_SIZE, "%u\n" , entry->wdata.range); |
1019 | return count; |
1020 | } |
1021 | |
1022 | /* Set range to user specified value, call appropriate function |
1023 | * according to the type of the wheel */ |
1024 | static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, |
1025 | const char *buf, size_t count) |
1026 | { |
1027 | struct hid_device *hid = to_hid_device(dev); |
1028 | struct lg4ff_device_entry *entry; |
1029 | struct lg_drv_data *drv_data; |
1030 | u16 range = simple_strtoul(buf, NULL, 10); |
1031 | |
1032 | drv_data = hid_get_drvdata(hid); |
1033 | if (!drv_data) { |
1034 | hid_err(hid, "Private driver data not found!\n" ); |
1035 | return -EINVAL; |
1036 | } |
1037 | |
1038 | entry = drv_data->device_props; |
1039 | if (!entry) { |
1040 | hid_err(hid, "Device properties not found!\n" ); |
1041 | return -EINVAL; |
1042 | } |
1043 | |
1044 | if (range == 0) |
1045 | range = entry->wdata.max_range; |
1046 | |
1047 | /* Check if the wheel supports range setting |
1048 | * and that the range is within limits for the wheel */ |
1049 | if (entry->wdata.set_range && range >= entry->wdata.min_range && range <= entry->wdata.max_range) { |
1050 | entry->wdata.set_range(hid, range); |
1051 | entry->wdata.range = range; |
1052 | } |
1053 | |
1054 | return count; |
1055 | } |
1056 | static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, lg4ff_range_show, lg4ff_range_store); |
1057 | |
1058 | static ssize_t lg4ff_real_id_show(struct device *dev, struct device_attribute *attr, char *buf) |
1059 | { |
1060 | struct hid_device *hid = to_hid_device(dev); |
1061 | struct lg4ff_device_entry *entry; |
1062 | struct lg_drv_data *drv_data; |
1063 | size_t count; |
1064 | |
1065 | drv_data = hid_get_drvdata(hid); |
1066 | if (!drv_data) { |
1067 | hid_err(hid, "Private driver data not found!\n" ); |
1068 | return 0; |
1069 | } |
1070 | |
1071 | entry = drv_data->device_props; |
1072 | if (!entry) { |
1073 | hid_err(hid, "Device properties not found!\n" ); |
1074 | return 0; |
1075 | } |
1076 | |
1077 | if (!entry->wdata.real_tag || !entry->wdata.real_name) { |
1078 | hid_err(hid, "NULL pointer to string\n" ); |
1079 | return 0; |
1080 | } |
1081 | |
1082 | count = scnprintf(buf, PAGE_SIZE, "%s: %s\n" , entry->wdata.real_tag, entry->wdata.real_name); |
1083 | return count; |
1084 | } |
1085 | |
1086 | static ssize_t lg4ff_real_id_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1087 | { |
1088 | /* Real ID is a read-only value */ |
1089 | return -EPERM; |
1090 | } |
1091 | static DEVICE_ATTR(real_id, S_IRUGO, lg4ff_real_id_show, lg4ff_real_id_store); |
1092 | |
1093 | #ifdef CONFIG_LEDS_CLASS |
1094 | static void lg4ff_set_leds(struct hid_device *hid, u8 leds) |
1095 | { |
1096 | struct lg_drv_data *drv_data; |
1097 | struct lg4ff_device_entry *entry; |
1098 | unsigned long flags; |
1099 | s32 *value; |
1100 | |
1101 | drv_data = hid_get_drvdata(hid); |
1102 | if (!drv_data) { |
1103 | hid_err(hid, "Private driver data not found!\n" ); |
1104 | return; |
1105 | } |
1106 | |
1107 | entry = drv_data->device_props; |
1108 | if (!entry) { |
1109 | hid_err(hid, "Device properties not found!\n" ); |
1110 | return; |
1111 | } |
1112 | value = entry->report->field[0]->value; |
1113 | |
1114 | spin_lock_irqsave(&entry->report_lock, flags); |
1115 | value[0] = 0xf8; |
1116 | value[1] = 0x12; |
1117 | value[2] = leds; |
1118 | value[3] = 0x00; |
1119 | value[4] = 0x00; |
1120 | value[5] = 0x00; |
1121 | value[6] = 0x00; |
1122 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
1123 | spin_unlock_irqrestore(&entry->report_lock, flags); |
1124 | } |
1125 | |
1126 | static void lg4ff_led_set_brightness(struct led_classdev *led_cdev, |
1127 | enum led_brightness value) |
1128 | { |
1129 | struct device *dev = led_cdev->dev->parent; |
1130 | struct hid_device *hid = to_hid_device(dev); |
1131 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
1132 | struct lg4ff_device_entry *entry; |
1133 | int i, state = 0; |
1134 | |
1135 | if (!drv_data) { |
1136 | hid_err(hid, "Device data not found." ); |
1137 | return; |
1138 | } |
1139 | |
1140 | entry = drv_data->device_props; |
1141 | |
1142 | if (!entry) { |
1143 | hid_err(hid, "Device properties not found." ); |
1144 | return; |
1145 | } |
1146 | |
1147 | for (i = 0; i < 5; i++) { |
1148 | if (led_cdev != entry->wdata.led[i]) |
1149 | continue; |
1150 | state = (entry->wdata.led_state >> i) & 1; |
1151 | if (value == LED_OFF && state) { |
1152 | entry->wdata.led_state &= ~(1 << i); |
1153 | lg4ff_set_leds(hid, entry->wdata.led_state); |
1154 | } else if (value != LED_OFF && !state) { |
1155 | entry->wdata.led_state |= 1 << i; |
1156 | lg4ff_set_leds(hid, entry->wdata.led_state); |
1157 | } |
1158 | break; |
1159 | } |
1160 | } |
1161 | |
1162 | static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev) |
1163 | { |
1164 | struct device *dev = led_cdev->dev->parent; |
1165 | struct hid_device *hid = to_hid_device(dev); |
1166 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
1167 | struct lg4ff_device_entry *entry; |
1168 | int i, value = 0; |
1169 | |
1170 | if (!drv_data) { |
1171 | hid_err(hid, "Device data not found." ); |
1172 | return LED_OFF; |
1173 | } |
1174 | |
1175 | entry = drv_data->device_props; |
1176 | |
1177 | if (!entry) { |
1178 | hid_err(hid, "Device properties not found." ); |
1179 | return LED_OFF; |
1180 | } |
1181 | |
1182 | for (i = 0; i < 5; i++) |
1183 | if (led_cdev == entry->wdata.led[i]) { |
1184 | value = (entry->wdata.led_state >> i) & 1; |
1185 | break; |
1186 | } |
1187 | |
1188 | return value ? LED_FULL : LED_OFF; |
1189 | } |
1190 | #endif |
1191 | |
1192 | static u16 lg4ff_identify_multimode_wheel(struct hid_device *hid, const u16 reported_product_id, const u16 bcdDevice) |
1193 | { |
1194 | u32 current_mode; |
1195 | int i; |
1196 | |
1197 | /* identify current mode from USB PID */ |
1198 | for (i = 1; i < ARRAY_SIZE(lg4ff_alternate_modes); i++) { |
1199 | dbg_hid("Testing whether PID is %X\n" , lg4ff_alternate_modes[i].product_id); |
1200 | if (reported_product_id == lg4ff_alternate_modes[i].product_id) |
1201 | break; |
1202 | } |
1203 | |
1204 | if (i == ARRAY_SIZE(lg4ff_alternate_modes)) |
1205 | return 0; |
1206 | |
1207 | current_mode = BIT(i); |
1208 | |
1209 | for (i = 0; i < ARRAY_SIZE(lg4ff_main_checklist); i++) { |
1210 | const u16 mask = lg4ff_main_checklist[i]->mask; |
1211 | const u16 result = lg4ff_main_checklist[i]->result; |
1212 | const u16 real_product_id = lg4ff_main_checklist[i]->real_product_id; |
1213 | |
1214 | if ((current_mode & lg4ff_main_checklist[i]->modes) && \ |
1215 | (bcdDevice & mask) == result) { |
1216 | dbg_hid("Found wheel with real PID %X whose reported PID is %X\n" , real_product_id, reported_product_id); |
1217 | return real_product_id; |
1218 | } |
1219 | } |
1220 | |
1221 | /* No match found. This is either Driving Force or an unknown |
1222 | * wheel model, do not touch it */ |
1223 | dbg_hid("Wheel with bcdDevice %X was not recognized as multimode wheel, leaving in its current mode\n" , bcdDevice); |
1224 | return 0; |
1225 | } |
1226 | |
1227 | static int lg4ff_handle_multimode_wheel(struct hid_device *hid, u16 *real_product_id, const u16 bcdDevice) |
1228 | { |
1229 | const u16 reported_product_id = hid->product; |
1230 | int ret; |
1231 | |
1232 | *real_product_id = lg4ff_identify_multimode_wheel(hid, reported_product_id, bcdDevice); |
1233 | /* Probed wheel is not a multimode wheel */ |
1234 | if (!*real_product_id) { |
1235 | *real_product_id = reported_product_id; |
1236 | dbg_hid("Wheel is not a multimode wheel\n" ); |
1237 | return LG4FF_MMODE_NOT_MULTIMODE; |
1238 | } |
1239 | |
1240 | /* Switch from "Driving Force" mode to native mode automatically. |
1241 | * Otherwise keep the wheel in its current mode */ |
1242 | if (reported_product_id == USB_DEVICE_ID_LOGITECH_WHEEL && |
1243 | reported_product_id != *real_product_id && |
1244 | !lg4ff_no_autoswitch) { |
1245 | const struct lg4ff_compat_mode_switch *s = lg4ff_get_mode_switch_command(*real_product_id, *real_product_id); |
1246 | |
1247 | if (!s) { |
1248 | hid_err(hid, "Invalid product id %X\n" , *real_product_id); |
1249 | return LG4FF_MMODE_NOT_MULTIMODE; |
1250 | } |
1251 | |
1252 | ret = lg4ff_switch_compatibility_mode(hid, s); |
1253 | if (ret) { |
1254 | /* Wheel could not have been switched to native mode, |
1255 | * leave it in "Driving Force" mode and continue */ |
1256 | hid_err(hid, "Unable to switch wheel mode, errno %d\n" , ret); |
1257 | return LG4FF_MMODE_IS_MULTIMODE; |
1258 | } |
1259 | return LG4FF_MMODE_SWITCHED; |
1260 | } |
1261 | |
1262 | return LG4FF_MMODE_IS_MULTIMODE; |
1263 | } |
1264 | |
1265 | |
1266 | int lg4ff_init(struct hid_device *hid) |
1267 | { |
1268 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
1269 | struct input_dev *dev = hidinput->input; |
1270 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
1271 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
1272 | const struct usb_device_descriptor *udesc = &(hid_to_usb_dev(hid)->descriptor); |
1273 | const u16 bcdDevice = le16_to_cpu(udesc->bcdDevice); |
1274 | const struct lg4ff_multimode_wheel *mmode_wheel = NULL; |
1275 | struct lg4ff_device_entry *entry; |
1276 | struct lg_drv_data *drv_data; |
1277 | int error, i, j; |
1278 | int mmode_ret, mmode_idx = -1; |
1279 | u16 real_product_id; |
1280 | |
1281 | /* Check that the report looks ok */ |
1282 | if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7)) |
1283 | return -1; |
1284 | |
1285 | drv_data = hid_get_drvdata(hid); |
1286 | if (!drv_data) { |
1287 | hid_err(hid, "Cannot add device, private driver data not allocated\n" ); |
1288 | return -1; |
1289 | } |
1290 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
1291 | if (!entry) |
1292 | return -ENOMEM; |
1293 | spin_lock_init(&entry->report_lock); |
1294 | entry->report = report; |
1295 | drv_data->device_props = entry; |
1296 | |
1297 | /* Check if a multimode wheel has been connected and |
1298 | * handle it appropriately */ |
1299 | mmode_ret = lg4ff_handle_multimode_wheel(hid, &real_product_id, bcdDevice); |
1300 | |
1301 | /* Wheel has been told to switch to native mode. There is no point in going on |
1302 | * with the initialization as the wheel will do a USB reset when it switches mode |
1303 | */ |
1304 | if (mmode_ret == LG4FF_MMODE_SWITCHED) |
1305 | return 0; |
1306 | else if (mmode_ret < 0) { |
1307 | hid_err(hid, "Unable to switch device mode during initialization, errno %d\n" , mmode_ret); |
1308 | error = mmode_ret; |
1309 | goto err_init; |
1310 | } |
1311 | |
1312 | /* Check what wheel has been connected */ |
1313 | for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { |
1314 | if (hid->product == lg4ff_devices[i].product_id) { |
1315 | dbg_hid("Found compatible device, product ID %04X\n" , lg4ff_devices[i].product_id); |
1316 | break; |
1317 | } |
1318 | } |
1319 | |
1320 | if (i == ARRAY_SIZE(lg4ff_devices)) { |
1321 | hid_err(hid, "This device is flagged to be handled by the lg4ff module but this module does not know how to handle it. " |
1322 | "Please report this as a bug to LKML, Simon Wood <simon@mungewell.org> or " |
1323 | "Michal Maly <madcatxster@devoid-pointer.net>\n" ); |
1324 | error = -1; |
1325 | goto err_init; |
1326 | } |
1327 | |
1328 | if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
1329 | for (mmode_idx = 0; mmode_idx < ARRAY_SIZE(lg4ff_multimode_wheels); mmode_idx++) { |
1330 | if (real_product_id == lg4ff_multimode_wheels[mmode_idx].product_id) |
1331 | break; |
1332 | } |
1333 | |
1334 | if (mmode_idx == ARRAY_SIZE(lg4ff_multimode_wheels)) { |
1335 | hid_err(hid, "Device product ID %X is not listed as a multimode wheel" , real_product_id); |
1336 | error = -1; |
1337 | goto err_init; |
1338 | } |
1339 | } |
1340 | |
1341 | /* Set supported force feedback capabilities */ |
1342 | for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) |
1343 | set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); |
1344 | |
1345 | error = input_ff_create_memless(dev, NULL, lg4ff_play); |
1346 | |
1347 | if (error) |
1348 | goto err_init; |
1349 | |
1350 | /* Initialize device properties */ |
1351 | if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
1352 | BUG_ON(mmode_idx == -1); |
1353 | mmode_wheel = &lg4ff_multimode_wheels[mmode_idx]; |
1354 | } |
1355 | lg4ff_init_wheel_data(&entry->wdata, &lg4ff_devices[i], mmode_wheel, real_product_id); |
1356 | |
1357 | /* Check if autocentering is available and |
1358 | * set the centering force to zero by default */ |
1359 | if (test_bit(FF_AUTOCENTER, dev->ffbit)) { |
1360 | /* Formula Force EX expects different autocentering command */ |
1361 | if ((bcdDevice >> 8) == LG4FF_FFEX_REV_MAJ && |
1362 | (bcdDevice & 0xff) == LG4FF_FFEX_REV_MIN) |
1363 | dev->ff->set_autocenter = lg4ff_set_autocenter_ffex; |
1364 | else |
1365 | dev->ff->set_autocenter = lg4ff_set_autocenter_default; |
1366 | |
1367 | dev->ff->set_autocenter(dev, 0); |
1368 | } |
1369 | |
1370 | /* Create sysfs interface */ |
1371 | error = device_create_file(&hid->dev, &dev_attr_combine_pedals); |
1372 | if (error) |
1373 | hid_warn(hid, "Unable to create sysfs interface for \"combine\", errno %d\n" , error); |
1374 | error = device_create_file(&hid->dev, &dev_attr_range); |
1375 | if (error) |
1376 | hid_warn(hid, "Unable to create sysfs interface for \"range\", errno %d\n" , error); |
1377 | if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
1378 | error = device_create_file(&hid->dev, &dev_attr_real_id); |
1379 | if (error) |
1380 | hid_warn(hid, "Unable to create sysfs interface for \"real_id\", errno %d\n" , error); |
1381 | error = device_create_file(&hid->dev, &dev_attr_alternate_modes); |
1382 | if (error) |
1383 | hid_warn(hid, "Unable to create sysfs interface for \"alternate_modes\", errno %d\n" , error); |
1384 | } |
1385 | dbg_hid("sysfs interface created\n" ); |
1386 | |
1387 | /* Set the maximum range to start with */ |
1388 | entry->wdata.range = entry->wdata.max_range; |
1389 | if (entry->wdata.set_range) |
1390 | entry->wdata.set_range(hid, entry->wdata.range); |
1391 | |
1392 | #ifdef CONFIG_LEDS_CLASS |
1393 | /* register led subsystem - G27/G29 only */ |
1394 | entry->wdata.led_state = 0; |
1395 | for (j = 0; j < 5; j++) |
1396 | entry->wdata.led[j] = NULL; |
1397 | |
1398 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G27_WHEEL || |
1399 | lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G29_WHEEL) { |
1400 | struct led_classdev *led; |
1401 | size_t name_sz; |
1402 | char *name; |
1403 | |
1404 | lg4ff_set_leds(hid, 0); |
1405 | |
1406 | name_sz = strlen(dev_name(&hid->dev)) + 8; |
1407 | |
1408 | for (j = 0; j < 5; j++) { |
1409 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); |
1410 | if (!led) { |
1411 | hid_err(hid, "can't allocate memory for LED %d\n" , j); |
1412 | goto err_leds; |
1413 | } |
1414 | |
1415 | name = (void *)(&led[1]); |
1416 | snprintf(name, name_sz, "%s::RPM%d" , dev_name(&hid->dev), j+1); |
1417 | led->name = name; |
1418 | led->brightness = 0; |
1419 | led->max_brightness = 1; |
1420 | led->brightness_get = lg4ff_led_get_brightness; |
1421 | led->brightness_set = lg4ff_led_set_brightness; |
1422 | |
1423 | entry->wdata.led[j] = led; |
1424 | error = led_classdev_register(&hid->dev, led); |
1425 | |
1426 | if (error) { |
1427 | hid_err(hid, "failed to register LED %d. Aborting.\n" , j); |
1428 | err_leds: |
1429 | /* Deregister LEDs (if any) */ |
1430 | for (j = 0; j < 5; j++) { |
1431 | led = entry->wdata.led[j]; |
1432 | entry->wdata.led[j] = NULL; |
1433 | if (!led) |
1434 | continue; |
1435 | led_classdev_unregister(led); |
1436 | kfree(led); |
1437 | } |
1438 | goto out; /* Let the driver continue without LEDs */ |
1439 | } |
1440 | } |
1441 | } |
1442 | out: |
1443 | #endif |
1444 | hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n" ); |
1445 | return 0; |
1446 | |
1447 | err_init: |
1448 | drv_data->device_props = NULL; |
1449 | kfree(entry); |
1450 | return error; |
1451 | } |
1452 | |
1453 | int lg4ff_deinit(struct hid_device *hid) |
1454 | { |
1455 | struct lg4ff_device_entry *entry; |
1456 | struct lg_drv_data *drv_data; |
1457 | |
1458 | drv_data = hid_get_drvdata(hid); |
1459 | if (!drv_data) { |
1460 | hid_err(hid, "Error while deinitializing device, no private driver data.\n" ); |
1461 | return -1; |
1462 | } |
1463 | entry = drv_data->device_props; |
1464 | if (!entry) |
1465 | goto out; /* Nothing more to do */ |
1466 | |
1467 | /* Multimode devices will have at least the "MODE_NATIVE" bit set */ |
1468 | if (entry->wdata.alternate_modes) { |
1469 | device_remove_file(&hid->dev, &dev_attr_real_id); |
1470 | device_remove_file(&hid->dev, &dev_attr_alternate_modes); |
1471 | } |
1472 | |
1473 | device_remove_file(&hid->dev, &dev_attr_combine_pedals); |
1474 | device_remove_file(&hid->dev, &dev_attr_range); |
1475 | #ifdef CONFIG_LEDS_CLASS |
1476 | { |
1477 | int j; |
1478 | struct led_classdev *led; |
1479 | |
1480 | /* Deregister LEDs (if any) */ |
1481 | for (j = 0; j < 5; j++) { |
1482 | |
1483 | led = entry->wdata.led[j]; |
1484 | entry->wdata.led[j] = NULL; |
1485 | if (!led) |
1486 | continue; |
1487 | led_classdev_unregister(led); |
1488 | kfree(led); |
1489 | } |
1490 | } |
1491 | #endif |
1492 | hid_hw_stop(hid); |
1493 | drv_data->device_props = NULL; |
1494 | |
1495 | kfree(entry); |
1496 | out: |
1497 | dbg_hid("Device successfully unregistered\n" ); |
1498 | return 0; |
1499 | } |
1500 | |