Commit | Line | Data |
---|---|---|
32c88cbc | 1 | /* |
64013800 | 2 | * Force feedback support for Logitech Gaming Wheels |
32c88cbc | 3 | * |
64013800 SW |
4 | * Including G27, G25, DFP, DFGT, FFEX, Momo, Momo2 & |
5 | * Speed Force Wireless (WiiWheel) | |
32c88cbc SW |
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" | |
a54dc779 | 33 | #include "hid-lg4ff.h" |
7362cd22 | 34 | #include "hid-ids.h" |
32c88cbc | 35 | |
30bb75d7 MM |
36 | #define to_hid_device(pdev) container_of(pdev, struct hid_device, dev) |
37 | ||
b96d23ec | 38 | #define LG4FF_MMODE_IS_MULTIMODE 0 |
e7c23449 MM |
39 | #define LG4FF_MMODE_SWITCHED 1 |
40 | #define LG4FF_MMODE_NOT_MULTIMODE 2 | |
41 | ||
b96d23ec MM |
42 | #define LG4FF_MODE_NATIVE_IDX 0 |
43 | #define LG4FF_MODE_DFEX_IDX 1 | |
44 | #define LG4FF_MODE_DFP_IDX 2 | |
45 | #define LG4FF_MODE_G25_IDX 3 | |
46 | #define LG4FF_MODE_DFGT_IDX 4 | |
47 | #define LG4FF_MODE_G27_IDX 5 | |
48 | #define LG4FF_MODE_MAX_IDX 6 | |
49 | ||
50 | #define LG4FF_MODE_NATIVE BIT(LG4FF_MODE_NATIVE_IDX) | |
51 | #define LG4FF_MODE_DFEX BIT(LG4FF_MODE_DFEX_IDX) | |
52 | #define LG4FF_MODE_DFP BIT(LG4FF_MODE_DFP_IDX) | |
53 | #define LG4FF_MODE_G25 BIT(LG4FF_MODE_G25_IDX) | |
54 | #define LG4FF_MODE_DFGT BIT(LG4FF_MODE_DFGT_IDX) | |
55 | #define LG4FF_MODE_G27 BIT(LG4FF_MODE_G27_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_DFGT_TAG "DFGT" | |
66 | #define LG4FF_DFGT_NAME "Driving Force GT" | |
67 | ||
e7c23449 MM |
68 | #define LG4FF_FFEX_REV_MAJ 0x21 |
69 | #define LG4FF_FFEX_REV_MIN 0x00 | |
70 | ||
d0afd848 MM |
71 | static void lg4ff_set_range_dfp(struct hid_device *hid, u16 range); |
72 | static void lg4ff_set_range_g25(struct hid_device *hid, u16 range); | |
30bb75d7 | 73 | |
72529c65 | 74 | struct lg4ff_wheel_data { |
5d9d60ad | 75 | const u32 product_id; |
2a552c30 | 76 | u16 range; |
5d9d60ad MM |
77 | const u16 min_range; |
78 | const u16 max_range; | |
22bcefdc | 79 | #ifdef CONFIG_LEDS_CLASS |
2a552c30 | 80 | u8 led_state; |
22bcefdc SW |
81 | struct led_classdev *led[5]; |
82 | #endif | |
5d9d60ad MM |
83 | const u32 alternate_modes; |
84 | const char * const real_tag; | |
85 | const char * const real_name; | |
86 | const u16 real_product_id; | |
72529c65 | 87 | |
30bb75d7 MM |
88 | void (*set_range)(struct hid_device *hid, u16 range); |
89 | }; | |
90 | ||
72529c65 | 91 | struct lg4ff_device_entry { |
c918fe78 | 92 | spinlock_t report_lock; /* Protect output HID report */ |
c28abd8c | 93 | struct hid_report *report; |
72529c65 MM |
94 | struct lg4ff_wheel_data wdata; |
95 | }; | |
96 | ||
7362cd22 | 97 | static const signed short lg4ff_wheel_effects[] = { |
32c88cbc SW |
98 | FF_CONSTANT, |
99 | FF_AUTOCENTER, | |
100 | -1 | |
101 | }; | |
102 | ||
7362cd22 | 103 | struct lg4ff_wheel { |
2a552c30 | 104 | const u32 product_id; |
7362cd22 | 105 | const signed short *ff_effects; |
2a552c30 MM |
106 | const u16 min_range; |
107 | const u16 max_range; | |
30bb75d7 | 108 | void (*set_range)(struct hid_device *hid, u16 range); |
7362cd22 MM |
109 | }; |
110 | ||
e7c23449 | 111 | struct lg4ff_compat_mode_switch { |
2a552c30 MM |
112 | const u8 cmd_count; /* Number of commands to send */ |
113 | const u8 cmd[]; | |
e7c23449 MM |
114 | }; |
115 | ||
116 | struct lg4ff_wheel_ident_info { | |
117 | const u16 mask; | |
118 | const u16 result; | |
119 | const u16 real_product_id; | |
120 | }; | |
121 | ||
122 | struct lg4ff_wheel_ident_checklist { | |
123 | const u32 count; | |
124 | const struct lg4ff_wheel_ident_info *models[]; | |
125 | }; | |
126 | ||
b96d23ec MM |
127 | struct lg4ff_multimode_wheel { |
128 | const u16 product_id; | |
129 | const u32 alternate_modes; | |
130 | const char *real_tag; | |
131 | const char *real_name; | |
132 | }; | |
133 | ||
134 | struct lg4ff_alternate_mode { | |
135 | const u16 product_id; | |
136 | const char *tag; | |
137 | const char *name; | |
138 | }; | |
139 | ||
7362cd22 | 140 | static const struct lg4ff_wheel lg4ff_devices[] = { |
30bb75d7 MM |
141 | {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
142 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, | |
d0afd848 MM |
143 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_dfp}, |
144 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, | |
145 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, | |
146 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, | |
30bb75d7 MM |
147 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270, NULL}, |
148 | {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} | |
7362cd22 MM |
149 | }; |
150 | ||
b96d23ec MM |
151 | static const struct lg4ff_multimode_wheel lg4ff_multimode_wheels[] = { |
152 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, | |
153 | LG4FF_MODE_NATIVE | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, | |
154 | LG4FF_DFP_TAG, LG4FF_DFP_NAME}, | |
155 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, | |
156 | LG4FF_MODE_NATIVE | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, | |
157 | LG4FF_G25_TAG, LG4FF_G25_NAME}, | |
158 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, | |
159 | LG4FF_MODE_NATIVE | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, | |
160 | LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, | |
161 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, | |
162 | LG4FF_MODE_NATIVE | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, | |
163 | LG4FF_G27_TAG, LG4FF_G27_NAME}, | |
164 | }; | |
165 | ||
166 | static const struct lg4ff_alternate_mode lg4ff_alternate_modes[] = { | |
167 | [LG4FF_MODE_NATIVE_IDX] = {0, "native", ""}, | |
168 | [LG4FF_MODE_DFEX_IDX] = {USB_DEVICE_ID_LOGITECH_WHEEL, LG4FF_DFEX_TAG, LG4FF_DFEX_NAME}, | |
169 | [LG4FF_MODE_DFP_IDX] = {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, LG4FF_DFP_TAG, LG4FF_DFP_NAME}, | |
170 | [LG4FF_MODE_G25_IDX] = {USB_DEVICE_ID_LOGITECH_G25_WHEEL, LG4FF_G25_TAG, LG4FF_G25_NAME}, | |
171 | [LG4FF_MODE_DFGT_IDX] = {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, | |
172 | [LG4FF_MODE_G27_IDX] = {USB_DEVICE_ID_LOGITECH_G27_WHEEL, LG4FF_G27_TAG, LG4FF_G27_NAME} | |
173 | }; | |
174 | ||
e7c23449 MM |
175 | /* Multimode wheel identificators */ |
176 | static const struct lg4ff_wheel_ident_info lg4ff_dfp_ident_info = { | |
177 | 0xf000, | |
178 | 0x1000, | |
179 | USB_DEVICE_ID_LOGITECH_DFP_WHEEL | |
180 | }; | |
181 | ||
182 | static const struct lg4ff_wheel_ident_info lg4ff_g25_ident_info = { | |
183 | 0xff00, | |
184 | 0x1200, | |
185 | USB_DEVICE_ID_LOGITECH_G25_WHEEL | |
186 | }; | |
187 | ||
188 | static const struct lg4ff_wheel_ident_info lg4ff_g27_ident_info = { | |
189 | 0xfff0, | |
190 | 0x1230, | |
191 | USB_DEVICE_ID_LOGITECH_G27_WHEEL | |
96440c8a MM |
192 | }; |
193 | ||
e7c23449 MM |
194 | static const struct lg4ff_wheel_ident_info lg4ff_dfgt_ident_info = { |
195 | 0xff00, | |
196 | 0x1300, | |
197 | USB_DEVICE_ID_LOGITECH_DFGT_WHEEL | |
96440c8a MM |
198 | }; |
199 | ||
e7c23449 MM |
200 | /* Multimode wheel identification checklists */ |
201 | static const struct lg4ff_wheel_ident_checklist lg4ff_main_checklist = { | |
202 | 4, | |
203 | {&lg4ff_dfgt_ident_info, | |
204 | &lg4ff_g27_ident_info, | |
205 | &lg4ff_g25_ident_info, | |
206 | &lg4ff_dfp_ident_info} | |
207 | }; | |
208 | ||
209 | /* Compatibility mode switching commands */ | |
f31a2de3 MM |
210 | /* EXT_CMD9 - Understood by G27 and DFGT */ |
211 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfex = { | |
212 | 2, | |
213 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ | |
214 | 0xf8, 0x09, 0x00, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DF-EX with detach */ | |
96440c8a MM |
215 | }; |
216 | ||
f31a2de3 | 217 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfp = { |
96440c8a | 218 | 2, |
f31a2de3 MM |
219 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
220 | 0xf8, 0x09, 0x01, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFP with detach */ | |
96440c8a MM |
221 | }; |
222 | ||
f31a2de3 MM |
223 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g25 = { |
224 | 2, | |
225 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ | |
226 | 0xf8, 0x09, 0x02, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G25 with detach */ | |
96440c8a MM |
227 | }; |
228 | ||
f31a2de3 | 229 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfgt = { |
96440c8a | 230 | 2, |
f31a2de3 MM |
231 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
232 | 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFGT with detach */ | |
233 | }; | |
234 | ||
235 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g27 = { | |
236 | 2, | |
237 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ | |
238 | 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G27 with detach */ | |
239 | }; | |
240 | ||
241 | /* EXT_CMD1 - Understood by DFP, G25, G27 and DFGT */ | |
242 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext01_dfp = { | |
243 | 1, | |
244 | {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} | |
245 | }; | |
246 | ||
247 | /* EXT_CMD16 - Understood by G25 and G27 */ | |
248 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext16_g25 = { | |
249 | 1, | |
250 | {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} | |
96440c8a MM |
251 | }; |
252 | ||
2b24a960 | 253 | /* Recalculates X axis value accordingly to currently selected range */ |
2a552c30 | 254 | static s32 lg4ff_adjust_dfp_x_axis(s32 value, u16 range) |
2b24a960 | 255 | { |
2a552c30 MM |
256 | u16 max_range; |
257 | s32 new_value; | |
2b24a960 MM |
258 | |
259 | if (range == 900) | |
260 | return value; | |
261 | else if (range == 200) | |
262 | return value; | |
263 | else if (range < 200) | |
264 | max_range = 200; | |
265 | else | |
266 | max_range = 900; | |
267 | ||
268 | new_value = 8192 + mult_frac(value - 8192, max_range, range); | |
269 | if (new_value < 0) | |
270 | return 0; | |
271 | else if (new_value > 16383) | |
272 | return 16383; | |
273 | else | |
274 | return new_value; | |
275 | } | |
276 | ||
277 | int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_field *field, | |
2a552c30 | 278 | struct hid_usage *usage, s32 value, struct lg_drv_data *drv_data) |
2b24a960 MM |
279 | { |
280 | struct lg4ff_device_entry *entry = drv_data->device_props; | |
2a552c30 | 281 | s32 new_value = 0; |
2b24a960 MM |
282 | |
283 | if (!entry) { | |
284 | hid_err(hid, "Device properties not found"); | |
285 | return 0; | |
286 | } | |
287 | ||
72529c65 | 288 | switch (entry->wdata.product_id) { |
2b24a960 MM |
289 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
290 | switch (usage->code) { | |
291 | case ABS_X: | |
72529c65 | 292 | new_value = lg4ff_adjust_dfp_x_axis(value, entry->wdata.range); |
2b24a960 MM |
293 | input_event(field->hidinput->input, usage->type, usage->code, new_value); |
294 | return 1; | |
295 | default: | |
296 | return 0; | |
297 | } | |
298 | default: | |
299 | return 0; | |
300 | } | |
301 | } | |
302 | ||
5d9d60ad MM |
303 | static void lg4ff_init_wheel_data(struct lg4ff_wheel_data * const wdata, const struct lg4ff_wheel *wheel, |
304 | const struct lg4ff_multimode_wheel *mmode_wheel, | |
305 | const u16 real_product_id) | |
306 | { | |
307 | u32 alternate_modes = 0; | |
308 | const char *real_tag = NULL; | |
309 | const char *real_name = NULL; | |
310 | ||
311 | if (mmode_wheel) { | |
312 | alternate_modes = mmode_wheel->alternate_modes; | |
313 | real_tag = mmode_wheel->real_tag; | |
314 | real_name = mmode_wheel->real_name; | |
315 | } | |
316 | ||
317 | { | |
318 | struct lg4ff_wheel_data t_wdata = { .product_id = wheel->product_id, | |
319 | .real_product_id = real_product_id, | |
320 | .min_range = wheel->min_range, | |
321 | .max_range = wheel->max_range, | |
322 | .set_range = wheel->set_range, | |
323 | .alternate_modes = alternate_modes, | |
324 | .real_tag = real_tag, | |
325 | .real_name = real_name }; | |
326 | ||
327 | memcpy(wdata, &t_wdata, sizeof(t_wdata)); | |
328 | } | |
329 | } | |
330 | ||
d0afd848 | 331 | static int lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
32c88cbc SW |
332 | { |
333 | struct hid_device *hid = input_get_drvdata(dev); | |
c918fe78 MM |
334 | struct lg4ff_device_entry *entry; |
335 | struct lg_drv_data *drv_data; | |
336 | unsigned long flags; | |
c28abd8c | 337 | s32 *value; |
32c88cbc SW |
338 | int x; |
339 | ||
c918fe78 MM |
340 | drv_data = hid_get_drvdata(hid); |
341 | if (!drv_data) { | |
342 | hid_err(hid, "Private driver data not found!\n"); | |
343 | return -EINVAL; | |
344 | } | |
345 | ||
346 | entry = drv_data->device_props; | |
347 | if (!entry) { | |
348 | hid_err(hid, "Device properties not found!\n"); | |
349 | return -EINVAL; | |
350 | } | |
c28abd8c | 351 | value = entry->report->field[0]->value; |
c918fe78 | 352 | |
a80fe5d6 | 353 | #define CLAMP(x) do { if (x < 0) x = 0; else if (x > 0xff) x = 0xff; } while (0) |
32c88cbc SW |
354 | |
355 | switch (effect->type) { | |
356 | case FF_CONSTANT: | |
357 | x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ | |
358 | CLAMP(x); | |
56930e7a | 359 | |
c918fe78 | 360 | spin_lock_irqsave(&entry->report_lock, flags); |
56930e7a SW |
361 | if (x == 0x80) { |
362 | /* De-activate force in slot-1*/ | |
363 | value[0] = 0x13; | |
364 | value[1] = 0x00; | |
365 | value[2] = 0x00; | |
366 | value[3] = 0x00; | |
367 | value[4] = 0x00; | |
368 | value[5] = 0x00; | |
369 | value[6] = 0x00; | |
370 | ||
c28abd8c | 371 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
c918fe78 | 372 | spin_unlock_irqrestore(&entry->report_lock, flags); |
56930e7a SW |
373 | return 0; |
374 | } | |
375 | ||
74479ba8 MM |
376 | value[0] = 0x11; /* Slot 1 */ |
377 | value[1] = 0x08; | |
378 | value[2] = x; | |
379 | value[3] = 0x80; | |
380 | value[4] = 0x00; | |
381 | value[5] = 0x00; | |
382 | value[6] = 0x00; | |
32c88cbc | 383 | |
c28abd8c | 384 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
c918fe78 | 385 | spin_unlock_irqrestore(&entry->report_lock, flags); |
32c88cbc SW |
386 | break; |
387 | } | |
388 | return 0; | |
389 | } | |
390 | ||
6e2de8e0 MM |
391 | /* Sends default autocentering command compatible with |
392 | * all wheels except Formula Force EX */ | |
d0afd848 | 393 | static void lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude) |
32c88cbc SW |
394 | { |
395 | struct hid_device *hid = input_get_drvdata(dev); | |
396 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
397 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
2a552c30 MM |
398 | s32 *value = report->field[0]->value; |
399 | u32 expand_a, expand_b; | |
1859762e SW |
400 | struct lg4ff_device_entry *entry; |
401 | struct lg_drv_data *drv_data; | |
c918fe78 | 402 | unsigned long flags; |
1859762e SW |
403 | |
404 | drv_data = hid_get_drvdata(hid); | |
405 | if (!drv_data) { | |
406 | hid_err(hid, "Private driver data not found!\n"); | |
407 | return; | |
408 | } | |
409 | ||
410 | entry = drv_data->device_props; | |
411 | if (!entry) { | |
412 | hid_err(hid, "Device properties not found!\n"); | |
413 | return; | |
414 | } | |
c28abd8c | 415 | value = entry->report->field[0]->value; |
f8c23156 | 416 | |
d2c02da5 | 417 | /* De-activate Auto-Center */ |
c918fe78 | 418 | spin_lock_irqsave(&entry->report_lock, flags); |
d2c02da5 SW |
419 | if (magnitude == 0) { |
420 | value[0] = 0xf5; | |
421 | value[1] = 0x00; | |
422 | value[2] = 0x00; | |
423 | value[3] = 0x00; | |
424 | value[4] = 0x00; | |
425 | value[5] = 0x00; | |
426 | value[6] = 0x00; | |
427 | ||
c28abd8c | 428 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
c918fe78 | 429 | spin_unlock_irqrestore(&entry->report_lock, flags); |
d2c02da5 SW |
430 | return; |
431 | } | |
432 | ||
f8c23156 SW |
433 | if (magnitude <= 0xaaaa) { |
434 | expand_a = 0x0c * magnitude; | |
435 | expand_b = 0x80 * magnitude; | |
436 | } else { | |
437 | expand_a = (0x0c * 0xaaaa) + 0x06 * (magnitude - 0xaaaa); | |
438 | expand_b = (0x80 * 0xaaaa) + 0xff * (magnitude - 0xaaaa); | |
439 | } | |
32c88cbc | 440 | |
1859762e | 441 | /* Adjust for non-MOMO wheels */ |
72529c65 | 442 | switch (entry->wdata.product_id) { |
1859762e SW |
443 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL: |
444 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2: | |
445 | break; | |
446 | default: | |
447 | expand_a = expand_a >> 1; | |
448 | break; | |
449 | } | |
450 | ||
74479ba8 MM |
451 | value[0] = 0xfe; |
452 | value[1] = 0x0d; | |
f8c23156 SW |
453 | value[2] = expand_a / 0xaaaa; |
454 | value[3] = expand_a / 0xaaaa; | |
455 | value[4] = expand_b / 0xaaaa; | |
74479ba8 MM |
456 | value[5] = 0x00; |
457 | value[6] = 0x00; | |
32c88cbc | 458 | |
c28abd8c | 459 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
d2c02da5 SW |
460 | |
461 | /* Activate Auto-Center */ | |
462 | value[0] = 0x14; | |
463 | value[1] = 0x00; | |
464 | value[2] = 0x00; | |
465 | value[3] = 0x00; | |
466 | value[4] = 0x00; | |
467 | value[5] = 0x00; | |
468 | value[6] = 0x00; | |
469 | ||
c28abd8c | 470 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
c918fe78 | 471 | spin_unlock_irqrestore(&entry->report_lock, flags); |
32c88cbc SW |
472 | } |
473 | ||
6e2de8e0 | 474 | /* Sends autocentering command compatible with Formula Force EX */ |
d0afd848 | 475 | static void lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude) |
6e2de8e0 MM |
476 | { |
477 | struct hid_device *hid = input_get_drvdata(dev); | |
c918fe78 MM |
478 | struct lg4ff_device_entry *entry; |
479 | struct lg_drv_data *drv_data; | |
480 | unsigned long flags; | |
c28abd8c | 481 | s32 *value; |
6e2de8e0 | 482 | magnitude = magnitude * 90 / 65535; |
6e2de8e0 | 483 | |
c918fe78 MM |
484 | drv_data = hid_get_drvdata(hid); |
485 | if (!drv_data) { | |
486 | hid_err(hid, "Private driver data not found!\n"); | |
487 | return; | |
488 | } | |
489 | ||
490 | entry = drv_data->device_props; | |
491 | if (!entry) { | |
492 | hid_err(hid, "Device properties not found!\n"); | |
493 | return; | |
494 | } | |
c28abd8c | 495 | value = entry->report->field[0]->value; |
c918fe78 MM |
496 | |
497 | spin_lock_irqsave(&entry->report_lock, flags); | |
74479ba8 MM |
498 | value[0] = 0xfe; |
499 | value[1] = 0x03; | |
500 | value[2] = magnitude >> 14; | |
501 | value[3] = magnitude >> 14; | |
502 | value[4] = magnitude; | |
503 | value[5] = 0x00; | |
504 | value[6] = 0x00; | |
6e2de8e0 | 505 | |
c28abd8c | 506 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
c918fe78 | 507 | spin_unlock_irqrestore(&entry->report_lock, flags); |
6e2de8e0 MM |
508 | } |
509 | ||
30bb75d7 | 510 | /* Sends command to set range compatible with G25/G27/Driving Force GT */ |
d0afd848 | 511 | static void lg4ff_set_range_g25(struct hid_device *hid, u16 range) |
30bb75d7 | 512 | { |
c918fe78 MM |
513 | struct lg4ff_device_entry *entry; |
514 | struct lg_drv_data *drv_data; | |
515 | unsigned long flags; | |
c28abd8c | 516 | s32 *value; |
74479ba8 | 517 | |
c918fe78 MM |
518 | drv_data = hid_get_drvdata(hid); |
519 | if (!drv_data) { | |
520 | hid_err(hid, "Private driver data not found!\n"); | |
521 | return; | |
522 | } | |
523 | ||
524 | entry = drv_data->device_props; | |
525 | if (!entry) { | |
526 | hid_err(hid, "Device properties not found!\n"); | |
527 | return; | |
528 | } | |
c28abd8c | 529 | value = entry->report->field[0]->value; |
30bb75d7 MM |
530 | dbg_hid("G25/G27/DFGT: setting range to %u\n", range); |
531 | ||
c918fe78 | 532 | spin_lock_irqsave(&entry->report_lock, flags); |
74479ba8 MM |
533 | value[0] = 0xf8; |
534 | value[1] = 0x81; | |
535 | value[2] = range & 0x00ff; | |
536 | value[3] = (range & 0xff00) >> 8; | |
537 | value[4] = 0x00; | |
538 | value[5] = 0x00; | |
539 | value[6] = 0x00; | |
30bb75d7 | 540 | |
c28abd8c | 541 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
c918fe78 | 542 | spin_unlock_irqrestore(&entry->report_lock, flags); |
30bb75d7 MM |
543 | } |
544 | ||
545 | /* Sends commands to set range compatible with Driving Force Pro wheel */ | |
d0afd848 | 546 | static void lg4ff_set_range_dfp(struct hid_device *hid, u16 range) |
30bb75d7 | 547 | { |
c918fe78 MM |
548 | struct lg4ff_device_entry *entry; |
549 | struct lg_drv_data *drv_data; | |
550 | unsigned long flags; | |
c28abd8c MM |
551 | int start_left, start_right, full_range; |
552 | s32 *value; | |
74479ba8 | 553 | |
c918fe78 MM |
554 | drv_data = hid_get_drvdata(hid); |
555 | if (!drv_data) { | |
556 | hid_err(hid, "Private driver data not found!\n"); | |
557 | return; | |
558 | } | |
559 | ||
560 | entry = drv_data->device_props; | |
561 | if (!entry) { | |
562 | hid_err(hid, "Device properties not found!\n"); | |
563 | return; | |
564 | } | |
c28abd8c | 565 | value = entry->report->field[0]->value; |
30bb75d7 MM |
566 | dbg_hid("Driving Force Pro: setting range to %u\n", range); |
567 | ||
568 | /* Prepare "coarse" limit command */ | |
c918fe78 | 569 | spin_lock_irqsave(&entry->report_lock, flags); |
74479ba8 | 570 | value[0] = 0xf8; |
a80fe5d6 | 571 | value[1] = 0x00; /* Set later */ |
74479ba8 MM |
572 | value[2] = 0x00; |
573 | value[3] = 0x00; | |
574 | value[4] = 0x00; | |
575 | value[5] = 0x00; | |
576 | value[6] = 0x00; | |
30bb75d7 MM |
577 | |
578 | if (range > 200) { | |
c28abd8c | 579 | value[1] = 0x03; |
30bb75d7 MM |
580 | full_range = 900; |
581 | } else { | |
c28abd8c | 582 | value[1] = 0x02; |
30bb75d7 MM |
583 | full_range = 200; |
584 | } | |
c28abd8c | 585 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
30bb75d7 MM |
586 | |
587 | /* Prepare "fine" limit command */ | |
74479ba8 MM |
588 | value[0] = 0x81; |
589 | value[1] = 0x0b; | |
590 | value[2] = 0x00; | |
591 | value[3] = 0x00; | |
592 | value[4] = 0x00; | |
593 | value[5] = 0x00; | |
594 | value[6] = 0x00; | |
30bb75d7 MM |
595 | |
596 | if (range == 200 || range == 900) { /* Do not apply any fine limit */ | |
c28abd8c | 597 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
c918fe78 | 598 | spin_unlock_irqrestore(&entry->report_lock, flags); |
30bb75d7 MM |
599 | return; |
600 | } | |
601 | ||
602 | /* Construct fine limit command */ | |
603 | start_left = (((full_range - range + 1) * 2047) / full_range); | |
604 | start_right = 0xfff - start_left; | |
605 | ||
74479ba8 MM |
606 | value[2] = start_left >> 4; |
607 | value[3] = start_right >> 4; | |
608 | value[4] = 0xff; | |
609 | value[5] = (start_right & 0xe) << 4 | (start_left & 0xe); | |
610 | value[6] = 0xff; | |
30bb75d7 | 611 | |
c28abd8c | 612 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
c918fe78 | 613 | spin_unlock_irqrestore(&entry->report_lock, flags); |
30bb75d7 MM |
614 | } |
615 | ||
f31a2de3 MM |
616 | static const struct lg4ff_compat_mode_switch *lg4ff_get_mode_switch_command(const u16 real_product_id, const u16 target_product_id) |
617 | { | |
618 | switch (real_product_id) { | |
619 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
620 | switch (target_product_id) { | |
621 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
622 | return &lg4ff_mode_switch_ext01_dfp; | |
623 | /* DFP can only be switched to its native mode */ | |
624 | default: | |
625 | return NULL; | |
626 | } | |
627 | break; | |
628 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: | |
629 | switch (target_product_id) { | |
630 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
631 | return &lg4ff_mode_switch_ext01_dfp; | |
632 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: | |
633 | return &lg4ff_mode_switch_ext16_g25; | |
634 | /* G25 can only be switched to DFP mode or its native mode */ | |
635 | default: | |
636 | return NULL; | |
637 | } | |
638 | break; | |
639 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: | |
640 | switch (target_product_id) { | |
641 | case USB_DEVICE_ID_LOGITECH_WHEEL: | |
642 | return &lg4ff_mode_switch_ext09_dfex; | |
643 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
644 | return &lg4ff_mode_switch_ext09_dfp; | |
645 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: | |
646 | return &lg4ff_mode_switch_ext09_g25; | |
647 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: | |
648 | return &lg4ff_mode_switch_ext09_g27; | |
649 | /* G27 can only be switched to DF-EX, DFP, G25 or its native mode */ | |
650 | default: | |
651 | return NULL; | |
652 | } | |
653 | break; | |
654 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: | |
655 | switch (target_product_id) { | |
656 | case USB_DEVICE_ID_LOGITECH_WHEEL: | |
657 | return &lg4ff_mode_switch_ext09_dfex; | |
658 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
659 | return &lg4ff_mode_switch_ext09_dfp; | |
660 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: | |
661 | return &lg4ff_mode_switch_ext09_dfgt; | |
662 | /* DFGT can only be switched to DF-EX, DFP or its native mode */ | |
663 | default: | |
664 | return NULL; | |
665 | } | |
666 | break; | |
667 | /* No other wheels have multiple modes */ | |
668 | default: | |
669 | return NULL; | |
670 | } | |
671 | } | |
672 | ||
e7c23449 | 673 | static int lg4ff_switch_compatibility_mode(struct hid_device *hid, const struct lg4ff_compat_mode_switch *s) |
96440c8a | 674 | { |
c918fe78 MM |
675 | struct lg4ff_device_entry *entry; |
676 | struct lg_drv_data *drv_data; | |
677 | unsigned long flags; | |
c28abd8c | 678 | s32 *value; |
e7c23449 | 679 | u8 i; |
96440c8a | 680 | |
c918fe78 MM |
681 | drv_data = hid_get_drvdata(hid); |
682 | if (!drv_data) { | |
683 | hid_err(hid, "Private driver data not found!\n"); | |
684 | return -EINVAL; | |
685 | } | |
686 | ||
687 | entry = drv_data->device_props; | |
688 | if (!entry) { | |
689 | hid_err(hid, "Device properties not found!\n"); | |
690 | return -EINVAL; | |
691 | } | |
c28abd8c | 692 | value = entry->report->field[0]->value; |
c918fe78 MM |
693 | |
694 | spin_lock_irqsave(&entry->report_lock, flags); | |
e7c23449 | 695 | for (i = 0; i < s->cmd_count; i++) { |
c1740d13 | 696 | u8 j; |
96440c8a | 697 | |
c1740d13 MM |
698 | for (j = 0; j < 7; j++) |
699 | value[j] = s->cmd[j + (7*i)]; | |
700 | ||
c28abd8c | 701 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
96440c8a | 702 | } |
c918fe78 | 703 | spin_unlock_irqrestore(&entry->report_lock, flags); |
c1740d13 | 704 | hid_hw_wait(hid); |
e7c23449 | 705 | return 0; |
96440c8a | 706 | } |
32c88cbc | 707 | |
b96d23ec MM |
708 | static ssize_t lg4ff_alternate_modes_show(struct device *dev, struct device_attribute *attr, char *buf) |
709 | { | |
710 | struct hid_device *hid = to_hid_device(dev); | |
711 | struct lg4ff_device_entry *entry; | |
712 | struct lg_drv_data *drv_data; | |
713 | ssize_t count = 0; | |
714 | int i; | |
715 | ||
716 | drv_data = hid_get_drvdata(hid); | |
717 | if (!drv_data) { | |
718 | hid_err(hid, "Private driver data not found!\n"); | |
719 | return 0; | |
720 | } | |
721 | ||
722 | entry = drv_data->device_props; | |
723 | if (!entry) { | |
724 | hid_err(hid, "Device properties not found!\n"); | |
725 | return 0; | |
726 | } | |
727 | ||
72529c65 | 728 | if (!entry->wdata.real_name) { |
b96d23ec MM |
729 | hid_err(hid, "NULL pointer to string\n"); |
730 | return 0; | |
731 | } | |
732 | ||
733 | for (i = 0; i < LG4FF_MODE_MAX_IDX; i++) { | |
72529c65 | 734 | if (entry->wdata.alternate_modes & BIT(i)) { |
b96d23ec MM |
735 | /* Print tag and full name */ |
736 | count += scnprintf(buf + count, PAGE_SIZE - count, "%s: %s", | |
737 | lg4ff_alternate_modes[i].tag, | |
72529c65 | 738 | !lg4ff_alternate_modes[i].product_id ? entry->wdata.real_name : lg4ff_alternate_modes[i].name); |
b96d23ec MM |
739 | if (count >= PAGE_SIZE - 1) |
740 | return count; | |
741 | ||
742 | /* Mark the currently active mode with an asterisk */ | |
72529c65 MM |
743 | if (lg4ff_alternate_modes[i].product_id == entry->wdata.product_id || |
744 | (lg4ff_alternate_modes[i].product_id == 0 && entry->wdata.product_id == entry->wdata.real_product_id)) | |
b96d23ec MM |
745 | count += scnprintf(buf + count, PAGE_SIZE - count, " *\n"); |
746 | else | |
747 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
748 | ||
749 | if (count >= PAGE_SIZE - 1) | |
750 | return count; | |
751 | } | |
752 | } | |
753 | ||
754 | return count; | |
755 | } | |
756 | ||
757 | static ssize_t lg4ff_alternate_modes_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) | |
758 | { | |
f31a2de3 MM |
759 | struct hid_device *hid = to_hid_device(dev); |
760 | struct lg4ff_device_entry *entry; | |
761 | struct lg_drv_data *drv_data; | |
762 | const struct lg4ff_compat_mode_switch *s; | |
763 | u16 target_product_id = 0; | |
764 | int i, ret; | |
765 | char *lbuf; | |
766 | ||
767 | drv_data = hid_get_drvdata(hid); | |
768 | if (!drv_data) { | |
769 | hid_err(hid, "Private driver data not found!\n"); | |
770 | return -EINVAL; | |
771 | } | |
772 | ||
773 | entry = drv_data->device_props; | |
774 | if (!entry) { | |
775 | hid_err(hid, "Device properties not found!\n"); | |
776 | return -EINVAL; | |
777 | } | |
778 | ||
779 | /* Allow \n at the end of the input parameter */ | |
780 | lbuf = kasprintf(GFP_KERNEL, "%s", buf); | |
781 | if (!lbuf) | |
782 | return -ENOMEM; | |
783 | ||
784 | i = strlen(lbuf); | |
785 | if (lbuf[i-1] == '\n') { | |
786 | if (i == 1) { | |
787 | kfree(lbuf); | |
788 | return -EINVAL; | |
789 | } | |
790 | lbuf[i-1] = '\0'; | |
791 | } | |
792 | ||
793 | for (i = 0; i < LG4FF_MODE_MAX_IDX; i++) { | |
794 | const u16 mode_product_id = lg4ff_alternate_modes[i].product_id; | |
795 | const char *tag = lg4ff_alternate_modes[i].tag; | |
796 | ||
72529c65 | 797 | if (entry->wdata.alternate_modes & BIT(i)) { |
f31a2de3 MM |
798 | if (!strcmp(tag, lbuf)) { |
799 | if (!mode_product_id) | |
72529c65 | 800 | target_product_id = entry->wdata.real_product_id; |
f31a2de3 MM |
801 | else |
802 | target_product_id = mode_product_id; | |
803 | break; | |
804 | } | |
805 | } | |
806 | } | |
807 | ||
808 | if (i == LG4FF_MODE_MAX_IDX) { | |
809 | hid_info(hid, "Requested mode \"%s\" is not supported by the device\n", lbuf); | |
810 | kfree(lbuf); | |
811 | return -EINVAL; | |
812 | } | |
813 | kfree(lbuf); /* Not needed anymore */ | |
814 | ||
72529c65 | 815 | if (target_product_id == entry->wdata.product_id) /* Nothing to do */ |
f31a2de3 MM |
816 | return count; |
817 | ||
818 | /* Automatic switching has to be disabled for the switch to DF-EX mode to work correctly */ | |
819 | if (target_product_id == USB_DEVICE_ID_LOGITECH_WHEEL && !lg4ff_no_autoswitch) { | |
820 | 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", | |
72529c65 | 821 | entry->wdata.real_name); |
f31a2de3 MM |
822 | return -EINVAL; |
823 | } | |
824 | ||
825 | /* Take care of hardware limitations */ | |
72529c65 MM |
826 | if ((entry->wdata.real_product_id == USB_DEVICE_ID_LOGITECH_DFP_WHEEL || entry->wdata.real_product_id == USB_DEVICE_ID_LOGITECH_G25_WHEEL) && |
827 | entry->wdata.product_id > target_product_id) { | |
828 | hid_info(hid, "\"%s\" cannot be switched back into \"%s\" mode\n", entry->wdata.real_name, lg4ff_alternate_modes[i].name); | |
f31a2de3 MM |
829 | return -EINVAL; |
830 | } | |
831 | ||
72529c65 | 832 | s = lg4ff_get_mode_switch_command(entry->wdata.real_product_id, target_product_id); |
f31a2de3 MM |
833 | if (!s) { |
834 | hid_err(hid, "Invalid target product ID %X\n", target_product_id); | |
835 | return -EINVAL; | |
836 | } | |
837 | ||
838 | ret = lg4ff_switch_compatibility_mode(hid, s); | |
839 | return (ret == 0 ? count : ret); | |
b96d23ec MM |
840 | } |
841 | static DEVICE_ATTR(alternate_modes, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, lg4ff_alternate_modes_show, lg4ff_alternate_modes_store); | |
842 | ||
fbf85e2a MM |
843 | /* Export the currently set range of the wheel */ |
844 | static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, | |
845 | char *buf) | |
30bb75d7 | 846 | { |
30bb75d7 | 847 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
848 | struct lg4ff_device_entry *entry; |
849 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
850 | size_t count; |
851 | ||
3b6b17b7 MM |
852 | drv_data = hid_get_drvdata(hid); |
853 | if (!drv_data) { | |
854 | hid_err(hid, "Private driver data not found!\n"); | |
855 | return 0; | |
30bb75d7 | 856 | } |
3b6b17b7 MM |
857 | |
858 | entry = drv_data->device_props; | |
859 | if (!entry) { | |
860 | hid_err(hid, "Device properties not found!\n"); | |
30bb75d7 MM |
861 | return 0; |
862 | } | |
863 | ||
72529c65 | 864 | count = scnprintf(buf, PAGE_SIZE, "%u\n", entry->wdata.range); |
30bb75d7 MM |
865 | return count; |
866 | } | |
867 | ||
868 | /* Set range to user specified value, call appropriate function | |
869 | * according to the type of the wheel */ | |
fbf85e2a MM |
870 | static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, |
871 | const char *buf, size_t count) | |
30bb75d7 | 872 | { |
30bb75d7 | 873 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
874 | struct lg4ff_device_entry *entry; |
875 | struct lg_drv_data *drv_data; | |
2a552c30 | 876 | u16 range = simple_strtoul(buf, NULL, 10); |
30bb75d7 | 877 | |
3b6b17b7 MM |
878 | drv_data = hid_get_drvdata(hid); |
879 | if (!drv_data) { | |
880 | hid_err(hid, "Private driver data not found!\n"); | |
29ff6657 | 881 | return -EINVAL; |
30bb75d7 | 882 | } |
3b6b17b7 MM |
883 | |
884 | entry = drv_data->device_props; | |
885 | if (!entry) { | |
886 | hid_err(hid, "Device properties not found!\n"); | |
29ff6657 | 887 | return -EINVAL; |
30bb75d7 MM |
888 | } |
889 | ||
890 | if (range == 0) | |
72529c65 | 891 | range = entry->wdata.max_range; |
30bb75d7 MM |
892 | |
893 | /* Check if the wheel supports range setting | |
894 | * and that the range is within limits for the wheel */ | |
72529c65 MM |
895 | if (entry->wdata.set_range && range >= entry->wdata.min_range && range <= entry->wdata.max_range) { |
896 | entry->wdata.set_range(hid, range); | |
897 | entry->wdata.range = range; | |
30bb75d7 MM |
898 | } |
899 | ||
900 | return count; | |
901 | } | |
fbf85e2a | 902 | static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, lg4ff_range_show, lg4ff_range_store); |
30bb75d7 | 903 | |
b96d23ec MM |
904 | static ssize_t lg4ff_real_id_show(struct device *dev, struct device_attribute *attr, char *buf) |
905 | { | |
906 | struct hid_device *hid = to_hid_device(dev); | |
907 | struct lg4ff_device_entry *entry; | |
908 | struct lg_drv_data *drv_data; | |
909 | size_t count; | |
910 | ||
911 | drv_data = hid_get_drvdata(hid); | |
912 | if (!drv_data) { | |
913 | hid_err(hid, "Private driver data not found!\n"); | |
914 | return 0; | |
915 | } | |
916 | ||
917 | entry = drv_data->device_props; | |
918 | if (!entry) { | |
919 | hid_err(hid, "Device properties not found!\n"); | |
920 | return 0; | |
921 | } | |
922 | ||
72529c65 | 923 | if (!entry->wdata.real_tag || !entry->wdata.real_name) { |
b96d23ec MM |
924 | hid_err(hid, "NULL pointer to string\n"); |
925 | return 0; | |
926 | } | |
927 | ||
72529c65 | 928 | count = scnprintf(buf, PAGE_SIZE, "%s: %s\n", entry->wdata.real_tag, entry->wdata.real_name); |
b96d23ec MM |
929 | return count; |
930 | } | |
931 | ||
932 | static ssize_t lg4ff_real_id_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) | |
933 | { | |
934 | /* Real ID is a read-only value */ | |
935 | return -EPERM; | |
936 | } | |
937 | static DEVICE_ATTR(real_id, S_IRUGO, lg4ff_real_id_show, lg4ff_real_id_store); | |
938 | ||
22bcefdc | 939 | #ifdef CONFIG_LEDS_CLASS |
2a552c30 | 940 | static void lg4ff_set_leds(struct hid_device *hid, u8 leds) |
22bcefdc | 941 | { |
c918fe78 MM |
942 | struct lg_drv_data *drv_data; |
943 | struct lg4ff_device_entry *entry; | |
944 | unsigned long flags; | |
c28abd8c | 945 | s32 *value; |
74479ba8 | 946 | |
c918fe78 MM |
947 | drv_data = hid_get_drvdata(hid); |
948 | if (!drv_data) { | |
949 | hid_err(hid, "Private driver data not found!\n"); | |
950 | return; | |
951 | } | |
952 | ||
953 | entry = drv_data->device_props; | |
954 | if (!entry) { | |
955 | hid_err(hid, "Device properties not found!\n"); | |
956 | return; | |
957 | } | |
c28abd8c | 958 | value = entry->report->field[0]->value; |
c918fe78 MM |
959 | |
960 | spin_lock_irqsave(&entry->report_lock, flags); | |
74479ba8 MM |
961 | value[0] = 0xf8; |
962 | value[1] = 0x12; | |
963 | value[2] = leds; | |
964 | value[3] = 0x00; | |
965 | value[4] = 0x00; | |
966 | value[5] = 0x00; | |
967 | value[6] = 0x00; | |
c28abd8c | 968 | hid_hw_request(hid, entry->report, HID_REQ_SET_REPORT); |
c918fe78 | 969 | spin_unlock_irqrestore(&entry->report_lock, flags); |
22bcefdc SW |
970 | } |
971 | ||
972 | static void lg4ff_led_set_brightness(struct led_classdev *led_cdev, | |
973 | enum led_brightness value) | |
974 | { | |
975 | struct device *dev = led_cdev->dev->parent; | |
976 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
4629fd16 | 977 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
978 | struct lg4ff_device_entry *entry; |
979 | int i, state = 0; | |
980 | ||
981 | if (!drv_data) { | |
982 | hid_err(hid, "Device data not found."); | |
983 | return; | |
984 | } | |
985 | ||
371a1d9e | 986 | entry = drv_data->device_props; |
22bcefdc SW |
987 | |
988 | if (!entry) { | |
989 | hid_err(hid, "Device properties not found."); | |
990 | return; | |
991 | } | |
992 | ||
993 | for (i = 0; i < 5; i++) { | |
72529c65 | 994 | if (led_cdev != entry->wdata.led[i]) |
22bcefdc | 995 | continue; |
72529c65 | 996 | state = (entry->wdata.led_state >> i) & 1; |
22bcefdc | 997 | if (value == LED_OFF && state) { |
72529c65 MM |
998 | entry->wdata.led_state &= ~(1 << i); |
999 | lg4ff_set_leds(hid, entry->wdata.led_state); | |
22bcefdc | 1000 | } else if (value != LED_OFF && !state) { |
72529c65 MM |
1001 | entry->wdata.led_state |= 1 << i; |
1002 | lg4ff_set_leds(hid, entry->wdata.led_state); | |
22bcefdc SW |
1003 | } |
1004 | break; | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev) | |
1009 | { | |
1010 | struct device *dev = led_cdev->dev->parent; | |
1011 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
4629fd16 | 1012 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
1013 | struct lg4ff_device_entry *entry; |
1014 | int i, value = 0; | |
1015 | ||
1016 | if (!drv_data) { | |
1017 | hid_err(hid, "Device data not found."); | |
1018 | return LED_OFF; | |
1019 | } | |
1020 | ||
371a1d9e | 1021 | entry = drv_data->device_props; |
22bcefdc SW |
1022 | |
1023 | if (!entry) { | |
1024 | hid_err(hid, "Device properties not found."); | |
1025 | return LED_OFF; | |
1026 | } | |
1027 | ||
1028 | for (i = 0; i < 5; i++) | |
72529c65 MM |
1029 | if (led_cdev == entry->wdata.led[i]) { |
1030 | value = (entry->wdata.led_state >> i) & 1; | |
22bcefdc SW |
1031 | break; |
1032 | } | |
1033 | ||
1034 | return value ? LED_FULL : LED_OFF; | |
1035 | } | |
1036 | #endif | |
1037 | ||
e7c23449 MM |
1038 | static u16 lg4ff_identify_multimode_wheel(struct hid_device *hid, const u16 reported_product_id, const u16 bcdDevice) |
1039 | { | |
1040 | const struct lg4ff_wheel_ident_checklist *checklist; | |
1041 | int i, from_idx, to_idx; | |
1042 | ||
1043 | switch (reported_product_id) { | |
1044 | case USB_DEVICE_ID_LOGITECH_WHEEL: | |
1045 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
1046 | checklist = &lg4ff_main_checklist; | |
1047 | from_idx = 0; | |
1048 | to_idx = checklist->count - 1; | |
1049 | break; | |
1050 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: | |
1051 | checklist = &lg4ff_main_checklist; | |
1052 | from_idx = 0; | |
1053 | to_idx = checklist->count - 2; /* End identity check at G25 */ | |
1054 | break; | |
1055 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: | |
1056 | checklist = &lg4ff_main_checklist; | |
1057 | from_idx = 1; /* Start identity check at G27 */ | |
1058 | to_idx = checklist->count - 3; /* End identity check at G27 */ | |
1059 | break; | |
1060 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: | |
1061 | checklist = &lg4ff_main_checklist; | |
1062 | from_idx = 0; | |
1063 | to_idx = checklist->count - 4; /* End identity check at DFGT */ | |
1064 | break; | |
1065 | default: | |
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | for (i = from_idx; i <= to_idx; i++) { | |
1070 | const u16 mask = checklist->models[i]->mask; | |
1071 | const u16 result = checklist->models[i]->result; | |
1072 | const u16 real_product_id = checklist->models[i]->real_product_id; | |
1073 | ||
1074 | if ((bcdDevice & mask) == result) { | |
1075 | dbg_hid("Found wheel with real PID %X whose reported PID is %X\n", real_product_id, reported_product_id); | |
1076 | return real_product_id; | |
1077 | } | |
1078 | } | |
1079 | ||
f31a2de3 MM |
1080 | /* No match found. This is either Driving Force or an unknown |
1081 | * wheel model, do not touch it */ | |
e7c23449 MM |
1082 | dbg_hid("Wheel with bcdDevice %X was not recognized as multimode wheel, leaving in its current mode\n", bcdDevice); |
1083 | return 0; | |
1084 | } | |
1085 | ||
1086 | static int lg4ff_handle_multimode_wheel(struct hid_device *hid, u16 *real_product_id, const u16 bcdDevice) | |
1087 | { | |
1088 | const u16 reported_product_id = hid->product; | |
1089 | int ret; | |
1090 | ||
1091 | *real_product_id = lg4ff_identify_multimode_wheel(hid, reported_product_id, bcdDevice); | |
1092 | /* Probed wheel is not a multimode wheel */ | |
1093 | if (!*real_product_id) { | |
1094 | *real_product_id = reported_product_id; | |
1095 | dbg_hid("Wheel is not a multimode wheel\n"); | |
1096 | return LG4FF_MMODE_NOT_MULTIMODE; | |
1097 | } | |
1098 | ||
1099 | /* Switch from "Driving Force" mode to native mode automatically. | |
1100 | * Otherwise keep the wheel in its current mode */ | |
1101 | if (reported_product_id == USB_DEVICE_ID_LOGITECH_WHEEL && | |
a54dc779 MM |
1102 | reported_product_id != *real_product_id && |
1103 | !lg4ff_no_autoswitch) { | |
f31a2de3 | 1104 | const struct lg4ff_compat_mode_switch *s = lg4ff_get_mode_switch_command(*real_product_id, *real_product_id); |
e7c23449 | 1105 | |
f31a2de3 | 1106 | if (!s) { |
e7c23449 | 1107 | hid_err(hid, "Invalid product id %X\n", *real_product_id); |
b96d23ec | 1108 | return LG4FF_MMODE_NOT_MULTIMODE; |
e7c23449 MM |
1109 | } |
1110 | ||
1111 | ret = lg4ff_switch_compatibility_mode(hid, s); | |
1112 | if (ret) { | |
1113 | /* Wheel could not have been switched to native mode, | |
1114 | * leave it in "Driving Force" mode and continue */ | |
1115 | hid_err(hid, "Unable to switch wheel mode, errno %d\n", ret); | |
b96d23ec | 1116 | return LG4FF_MMODE_IS_MULTIMODE; |
e7c23449 MM |
1117 | } |
1118 | return LG4FF_MMODE_SWITCHED; | |
1119 | } | |
1120 | ||
b96d23ec | 1121 | return LG4FF_MMODE_IS_MULTIMODE; |
e7c23449 MM |
1122 | } |
1123 | ||
1124 | ||
32c88cbc SW |
1125 | int lg4ff_init(struct hid_device *hid) |
1126 | { | |
1127 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); | |
32c88cbc | 1128 | struct input_dev *dev = hidinput->input; |
c28abd8c MM |
1129 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
1130 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
e7c23449 MM |
1131 | const struct usb_device_descriptor *udesc = &(hid_to_usb_dev(hid)->descriptor); |
1132 | const u16 bcdDevice = le16_to_cpu(udesc->bcdDevice); | |
5d9d60ad | 1133 | const struct lg4ff_multimode_wheel *mmode_wheel = NULL; |
30bb75d7 | 1134 | struct lg4ff_device_entry *entry; |
3b6b17b7 | 1135 | struct lg_drv_data *drv_data; |
b96d23ec MM |
1136 | int error, i, j; |
1137 | int mmode_ret, mmode_idx = -1; | |
e7c23449 | 1138 | u16 real_product_id; |
32c88cbc | 1139 | |
32c88cbc | 1140 | /* Check that the report looks ok */ |
0fb6bd06 | 1141 | if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7)) |
32c88cbc | 1142 | return -1; |
30bb75d7 | 1143 | |
72529c65 MM |
1144 | drv_data = hid_get_drvdata(hid); |
1145 | if (!drv_data) { | |
1146 | hid_err(hid, "Cannot add device, private driver data not allocated\n"); | |
1147 | return -1; | |
1148 | } | |
1149 | entry = kzalloc(sizeof(*entry), GFP_KERNEL); | |
1150 | if (!entry) | |
1151 | return -ENOMEM; | |
c918fe78 | 1152 | spin_lock_init(&entry->report_lock); |
c28abd8c | 1153 | entry->report = report; |
72529c65 MM |
1154 | drv_data->device_props = entry; |
1155 | ||
e7c23449 MM |
1156 | /* Check if a multimode wheel has been connected and |
1157 | * handle it appropriately */ | |
b96d23ec | 1158 | mmode_ret = lg4ff_handle_multimode_wheel(hid, &real_product_id, bcdDevice); |
e7c23449 MM |
1159 | |
1160 | /* Wheel has been told to switch to native mode. There is no point in going on | |
1161 | * with the initialization as the wheel will do a USB reset when it switches mode | |
1162 | */ | |
b96d23ec | 1163 | if (mmode_ret == LG4FF_MMODE_SWITCHED) |
e7c23449 | 1164 | return 0; |
72529c65 MM |
1165 | else if (mmode_ret < 0) { |
1166 | hid_err(hid, "Unable to switch device mode during initialization, errno %d\n", mmode_ret); | |
1167 | error = mmode_ret; | |
1168 | goto err_init; | |
1169 | } | |
e7c23449 | 1170 | |
7362cd22 MM |
1171 | /* Check what wheel has been connected */ |
1172 | for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { | |
1173 | if (hid->product == lg4ff_devices[i].product_id) { | |
1174 | dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id); | |
1175 | break; | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | if (i == ARRAY_SIZE(lg4ff_devices)) { | |
9c2a6bd1 MM |
1180 | hid_err(hid, "This device is flagged to be handled by the lg4ff module but this module does not know how to handle it. " |
1181 | "Please report this as a bug to LKML, Simon Wood <simon@mungewell.org> or " | |
1182 | "Michal Maly <madcatxster@devoid-pointer.net>\n"); | |
72529c65 MM |
1183 | error = -1; |
1184 | goto err_init; | |
7362cd22 | 1185 | } |
32c88cbc | 1186 | |
b96d23ec MM |
1187 | if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
1188 | for (mmode_idx = 0; mmode_idx < ARRAY_SIZE(lg4ff_multimode_wheels); mmode_idx++) { | |
1189 | if (real_product_id == lg4ff_multimode_wheels[mmode_idx].product_id) | |
1190 | break; | |
1191 | } | |
1192 | ||
1193 | if (mmode_idx == ARRAY_SIZE(lg4ff_multimode_wheels)) { | |
1194 | hid_err(hid, "Device product ID %X is not listed as a multimode wheel", real_product_id); | |
72529c65 MM |
1195 | error = -1; |
1196 | goto err_init; | |
b96d23ec MM |
1197 | } |
1198 | } | |
1199 | ||
7362cd22 MM |
1200 | /* Set supported force feedback capabilities */ |
1201 | for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) | |
1202 | set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); | |
32c88cbc | 1203 | |
d0afd848 | 1204 | error = input_ff_create_memless(dev, NULL, lg4ff_play); |
32c88cbc SW |
1205 | |
1206 | if (error) | |
72529c65 | 1207 | goto err_init; |
30bb75d7 | 1208 | |
5d9d60ad | 1209 | /* Initialize device properties */ |
b96d23ec MM |
1210 | if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
1211 | BUG_ON(mmode_idx == -1); | |
5d9d60ad | 1212 | mmode_wheel = &lg4ff_multimode_wheels[mmode_idx]; |
b96d23ec | 1213 | } |
5d9d60ad | 1214 | lg4ff_init_wheel_data(&entry->wdata, &lg4ff_devices[i], mmode_wheel, real_product_id); |
30bb75d7 | 1215 | |
114a55cf SW |
1216 | /* Check if autocentering is available and |
1217 | * set the centering force to zero by default */ | |
1218 | if (test_bit(FF_AUTOCENTER, dev->ffbit)) { | |
e7c23449 MM |
1219 | /* Formula Force EX expects different autocentering command */ |
1220 | if ((bcdDevice >> 8) == LG4FF_FFEX_REV_MAJ && | |
1221 | (bcdDevice & 0xff) == LG4FF_FFEX_REV_MIN) | |
d0afd848 | 1222 | dev->ff->set_autocenter = lg4ff_set_autocenter_ffex; |
114a55cf | 1223 | else |
d0afd848 | 1224 | dev->ff->set_autocenter = lg4ff_set_autocenter_default; |
114a55cf SW |
1225 | |
1226 | dev->ff->set_autocenter(dev, 0); | |
1227 | } | |
1228 | ||
30bb75d7 MM |
1229 | /* Create sysfs interface */ |
1230 | error = device_create_file(&hid->dev, &dev_attr_range); | |
1231 | if (error) | |
d61a70ec | 1232 | hid_warn(hid, "Unable to create sysfs interface for \"range\", errno %d\n", error); |
b96d23ec MM |
1233 | if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
1234 | error = device_create_file(&hid->dev, &dev_attr_real_id); | |
1235 | if (error) | |
d61a70ec | 1236 | hid_warn(hid, "Unable to create sysfs interface for \"real_id\", errno %d\n", error); |
b96d23ec MM |
1237 | error = device_create_file(&hid->dev, &dev_attr_alternate_modes); |
1238 | if (error) | |
d61a70ec | 1239 | hid_warn(hid, "Unable to create sysfs interface for \"alternate_modes\", errno %d\n", error); |
b96d23ec | 1240 | } |
30bb75d7 MM |
1241 | dbg_hid("sysfs interface created\n"); |
1242 | ||
1243 | /* Set the maximum range to start with */ | |
72529c65 MM |
1244 | entry->wdata.range = entry->wdata.max_range; |
1245 | if (entry->wdata.set_range) | |
1246 | entry->wdata.set_range(hid, entry->wdata.range); | |
30bb75d7 | 1247 | |
22bcefdc SW |
1248 | #ifdef CONFIG_LEDS_CLASS |
1249 | /* register led subsystem - G27 only */ | |
72529c65 | 1250 | entry->wdata.led_state = 0; |
22bcefdc | 1251 | for (j = 0; j < 5; j++) |
72529c65 | 1252 | entry->wdata.led[j] = NULL; |
22bcefdc SW |
1253 | |
1254 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G27_WHEEL) { | |
1255 | struct led_classdev *led; | |
1256 | size_t name_sz; | |
1257 | char *name; | |
1258 | ||
1259 | lg4ff_set_leds(hid, 0); | |
1260 | ||
1261 | name_sz = strlen(dev_name(&hid->dev)) + 8; | |
1262 | ||
1263 | for (j = 0; j < 5; j++) { | |
1264 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); | |
1265 | if (!led) { | |
1266 | hid_err(hid, "can't allocate memory for LED %d\n", j); | |
72529c65 | 1267 | goto err_leds; |
22bcefdc SW |
1268 | } |
1269 | ||
1270 | name = (void *)(&led[1]); | |
1271 | snprintf(name, name_sz, "%s::RPM%d", dev_name(&hid->dev), j+1); | |
1272 | led->name = name; | |
1273 | led->brightness = 0; | |
1274 | led->max_brightness = 1; | |
1275 | led->brightness_get = lg4ff_led_get_brightness; | |
1276 | led->brightness_set = lg4ff_led_set_brightness; | |
1277 | ||
72529c65 | 1278 | entry->wdata.led[j] = led; |
22bcefdc SW |
1279 | error = led_classdev_register(&hid->dev, led); |
1280 | ||
1281 | if (error) { | |
1282 | hid_err(hid, "failed to register LED %d. Aborting.\n", j); | |
72529c65 | 1283 | err_leds: |
22bcefdc SW |
1284 | /* Deregister LEDs (if any) */ |
1285 | for (j = 0; j < 5; j++) { | |
72529c65 MM |
1286 | led = entry->wdata.led[j]; |
1287 | entry->wdata.led[j] = NULL; | |
22bcefdc SW |
1288 | if (!led) |
1289 | continue; | |
1290 | led_classdev_unregister(led); | |
1291 | kfree(led); | |
1292 | } | |
1293 | goto out; /* Let the driver continue without LEDs */ | |
1294 | } | |
1295 | } | |
1296 | } | |
22bcefdc | 1297 | out: |
c6e6dc87 | 1298 | #endif |
64013800 | 1299 | hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n"); |
32c88cbc | 1300 | return 0; |
72529c65 MM |
1301 | |
1302 | err_init: | |
1303 | drv_data->device_props = NULL; | |
1304 | kfree(entry); | |
1305 | return error; | |
32c88cbc SW |
1306 | } |
1307 | ||
30bb75d7 MM |
1308 | int lg4ff_deinit(struct hid_device *hid) |
1309 | { | |
30bb75d7 | 1310 | struct lg4ff_device_entry *entry; |
3b6b17b7 MM |
1311 | struct lg_drv_data *drv_data; |
1312 | ||
3b6b17b7 MM |
1313 | drv_data = hid_get_drvdata(hid); |
1314 | if (!drv_data) { | |
1315 | hid_err(hid, "Error while deinitializing device, no private driver data.\n"); | |
1316 | return -1; | |
30bb75d7 | 1317 | } |
3b6b17b7 | 1318 | entry = drv_data->device_props; |
e7c23449 MM |
1319 | if (!entry) |
1320 | goto out; /* Nothing more to do */ | |
1321 | ||
b96d23ec | 1322 | /* Multimode devices will have at least the "MODE_NATIVE" bit set */ |
72529c65 | 1323 | if (entry->wdata.alternate_modes) { |
b96d23ec MM |
1324 | device_remove_file(&hid->dev, &dev_attr_real_id); |
1325 | device_remove_file(&hid->dev, &dev_attr_alternate_modes); | |
1326 | } | |
1327 | ||
72529c65 | 1328 | device_remove_file(&hid->dev, &dev_attr_range); |
22bcefdc SW |
1329 | #ifdef CONFIG_LEDS_CLASS |
1330 | { | |
1331 | int j; | |
1332 | struct led_classdev *led; | |
1333 | ||
1334 | /* Deregister LEDs (if any) */ | |
1335 | for (j = 0; j < 5; j++) { | |
1336 | ||
72529c65 MM |
1337 | led = entry->wdata.led[j]; |
1338 | entry->wdata.led[j] = NULL; | |
22bcefdc SW |
1339 | if (!led) |
1340 | continue; | |
1341 | led_classdev_unregister(led); | |
1342 | kfree(led); | |
1343 | } | |
1344 | } | |
1345 | #endif | |
b211a638 MM |
1346 | hid_hw_stop(hid); |
1347 | drv_data->device_props = NULL; | |
22bcefdc | 1348 | |
3b6b17b7 | 1349 | kfree(entry); |
e7c23449 | 1350 | out: |
30bb75d7 MM |
1351 | dbg_hid("Device successfully unregistered\n"); |
1352 | return 0; | |
1353 | } |