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 | |
30bb75d7 | 74 | struct lg4ff_device_entry { |
2a552c30 MM |
75 | u32 product_id; |
76 | u16 range; | |
77 | u16 min_range; | |
78 | u16 max_range; | |
22bcefdc | 79 | #ifdef CONFIG_LEDS_CLASS |
2a552c30 | 80 | u8 led_state; |
22bcefdc SW |
81 | struct led_classdev *led[5]; |
82 | #endif | |
b96d23ec MM |
83 | u32 alternate_modes; |
84 | const char *real_tag; | |
85 | const char *real_name; | |
86 | u16 real_product_id; | |
30bb75d7 MM |
87 | struct list_head list; |
88 | void (*set_range)(struct hid_device *hid, u16 range); | |
89 | }; | |
90 | ||
7362cd22 | 91 | static const signed short lg4ff_wheel_effects[] = { |
32c88cbc SW |
92 | FF_CONSTANT, |
93 | FF_AUTOCENTER, | |
94 | -1 | |
95 | }; | |
96 | ||
7362cd22 | 97 | struct lg4ff_wheel { |
2a552c30 | 98 | const u32 product_id; |
7362cd22 | 99 | const signed short *ff_effects; |
2a552c30 MM |
100 | const u16 min_range; |
101 | const u16 max_range; | |
30bb75d7 | 102 | void (*set_range)(struct hid_device *hid, u16 range); |
7362cd22 MM |
103 | }; |
104 | ||
e7c23449 | 105 | struct lg4ff_compat_mode_switch { |
2a552c30 MM |
106 | const u8 cmd_count; /* Number of commands to send */ |
107 | const u8 cmd[]; | |
e7c23449 MM |
108 | }; |
109 | ||
110 | struct lg4ff_wheel_ident_info { | |
111 | const u16 mask; | |
112 | const u16 result; | |
113 | const u16 real_product_id; | |
114 | }; | |
115 | ||
116 | struct lg4ff_wheel_ident_checklist { | |
117 | const u32 count; | |
118 | const struct lg4ff_wheel_ident_info *models[]; | |
119 | }; | |
120 | ||
b96d23ec MM |
121 | struct lg4ff_multimode_wheel { |
122 | const u16 product_id; | |
123 | const u32 alternate_modes; | |
124 | const char *real_tag; | |
125 | const char *real_name; | |
126 | }; | |
127 | ||
128 | struct lg4ff_alternate_mode { | |
129 | const u16 product_id; | |
130 | const char *tag; | |
131 | const char *name; | |
132 | }; | |
133 | ||
7362cd22 | 134 | static const struct lg4ff_wheel lg4ff_devices[] = { |
30bb75d7 MM |
135 | {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
136 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, | |
d0afd848 MM |
137 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_dfp}, |
138 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, | |
139 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, | |
140 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900, lg4ff_set_range_g25}, | |
30bb75d7 MM |
141 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270, NULL}, |
142 | {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} | |
7362cd22 MM |
143 | }; |
144 | ||
b96d23ec MM |
145 | static const struct lg4ff_multimode_wheel lg4ff_multimode_wheels[] = { |
146 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, | |
147 | LG4FF_MODE_NATIVE | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, | |
148 | LG4FF_DFP_TAG, LG4FF_DFP_NAME}, | |
149 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, | |
150 | LG4FF_MODE_NATIVE | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, | |
151 | LG4FF_G25_TAG, LG4FF_G25_NAME}, | |
152 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, | |
153 | LG4FF_MODE_NATIVE | LG4FF_MODE_DFGT | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, | |
154 | LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, | |
155 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, | |
156 | LG4FF_MODE_NATIVE | LG4FF_MODE_G27 | LG4FF_MODE_G25 | LG4FF_MODE_DFP | LG4FF_MODE_DFEX, | |
157 | LG4FF_G27_TAG, LG4FF_G27_NAME}, | |
158 | }; | |
159 | ||
160 | static const struct lg4ff_alternate_mode lg4ff_alternate_modes[] = { | |
161 | [LG4FF_MODE_NATIVE_IDX] = {0, "native", ""}, | |
162 | [LG4FF_MODE_DFEX_IDX] = {USB_DEVICE_ID_LOGITECH_WHEEL, LG4FF_DFEX_TAG, LG4FF_DFEX_NAME}, | |
163 | [LG4FF_MODE_DFP_IDX] = {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, LG4FF_DFP_TAG, LG4FF_DFP_NAME}, | |
164 | [LG4FF_MODE_G25_IDX] = {USB_DEVICE_ID_LOGITECH_G25_WHEEL, LG4FF_G25_TAG, LG4FF_G25_NAME}, | |
165 | [LG4FF_MODE_DFGT_IDX] = {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, LG4FF_DFGT_TAG, LG4FF_DFGT_NAME}, | |
166 | [LG4FF_MODE_G27_IDX] = {USB_DEVICE_ID_LOGITECH_G27_WHEEL, LG4FF_G27_TAG, LG4FF_G27_NAME} | |
167 | }; | |
168 | ||
e7c23449 MM |
169 | /* Multimode wheel identificators */ |
170 | static const struct lg4ff_wheel_ident_info lg4ff_dfp_ident_info = { | |
171 | 0xf000, | |
172 | 0x1000, | |
173 | USB_DEVICE_ID_LOGITECH_DFP_WHEEL | |
174 | }; | |
175 | ||
176 | static const struct lg4ff_wheel_ident_info lg4ff_g25_ident_info = { | |
177 | 0xff00, | |
178 | 0x1200, | |
179 | USB_DEVICE_ID_LOGITECH_G25_WHEEL | |
180 | }; | |
181 | ||
182 | static const struct lg4ff_wheel_ident_info lg4ff_g27_ident_info = { | |
183 | 0xfff0, | |
184 | 0x1230, | |
185 | USB_DEVICE_ID_LOGITECH_G27_WHEEL | |
96440c8a MM |
186 | }; |
187 | ||
e7c23449 MM |
188 | static const struct lg4ff_wheel_ident_info lg4ff_dfgt_ident_info = { |
189 | 0xff00, | |
190 | 0x1300, | |
191 | USB_DEVICE_ID_LOGITECH_DFGT_WHEEL | |
96440c8a MM |
192 | }; |
193 | ||
e7c23449 MM |
194 | /* Multimode wheel identification checklists */ |
195 | static const struct lg4ff_wheel_ident_checklist lg4ff_main_checklist = { | |
196 | 4, | |
197 | {&lg4ff_dfgt_ident_info, | |
198 | &lg4ff_g27_ident_info, | |
199 | &lg4ff_g25_ident_info, | |
200 | &lg4ff_dfp_ident_info} | |
201 | }; | |
202 | ||
203 | /* Compatibility mode switching commands */ | |
f31a2de3 MM |
204 | /* EXT_CMD9 - Understood by G27 and DFGT */ |
205 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfex = { | |
206 | 2, | |
207 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ | |
208 | 0xf8, 0x09, 0x00, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DF-EX with detach */ | |
96440c8a MM |
209 | }; |
210 | ||
f31a2de3 | 211 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfp = { |
96440c8a | 212 | 2, |
f31a2de3 MM |
213 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
214 | 0xf8, 0x09, 0x01, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFP with detach */ | |
96440c8a MM |
215 | }; |
216 | ||
f31a2de3 MM |
217 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g25 = { |
218 | 2, | |
219 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ | |
220 | 0xf8, 0x09, 0x02, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G25 with detach */ | |
96440c8a MM |
221 | }; |
222 | ||
f31a2de3 | 223 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_dfgt = { |
96440c8a | 224 | 2, |
f31a2de3 MM |
225 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ |
226 | 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* Switch mode to DFGT with detach */ | |
227 | }; | |
228 | ||
229 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext09_g27 = { | |
230 | 2, | |
231 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* Revert mode upon USB reset */ | |
232 | 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* Switch mode to G27 with detach */ | |
233 | }; | |
234 | ||
235 | /* EXT_CMD1 - Understood by DFP, G25, G27 and DFGT */ | |
236 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext01_dfp = { | |
237 | 1, | |
238 | {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} | |
239 | }; | |
240 | ||
241 | /* EXT_CMD16 - Understood by G25 and G27 */ | |
242 | static const struct lg4ff_compat_mode_switch lg4ff_mode_switch_ext16_g25 = { | |
243 | 1, | |
244 | {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} | |
96440c8a MM |
245 | }; |
246 | ||
2b24a960 | 247 | /* Recalculates X axis value accordingly to currently selected range */ |
2a552c30 | 248 | static s32 lg4ff_adjust_dfp_x_axis(s32 value, u16 range) |
2b24a960 | 249 | { |
2a552c30 MM |
250 | u16 max_range; |
251 | s32 new_value; | |
2b24a960 MM |
252 | |
253 | if (range == 900) | |
254 | return value; | |
255 | else if (range == 200) | |
256 | return value; | |
257 | else if (range < 200) | |
258 | max_range = 200; | |
259 | else | |
260 | max_range = 900; | |
261 | ||
262 | new_value = 8192 + mult_frac(value - 8192, max_range, range); | |
263 | if (new_value < 0) | |
264 | return 0; | |
265 | else if (new_value > 16383) | |
266 | return 16383; | |
267 | else | |
268 | return new_value; | |
269 | } | |
270 | ||
271 | int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_field *field, | |
2a552c30 | 272 | struct hid_usage *usage, s32 value, struct lg_drv_data *drv_data) |
2b24a960 MM |
273 | { |
274 | struct lg4ff_device_entry *entry = drv_data->device_props; | |
2a552c30 | 275 | s32 new_value = 0; |
2b24a960 MM |
276 | |
277 | if (!entry) { | |
278 | hid_err(hid, "Device properties not found"); | |
279 | return 0; | |
280 | } | |
281 | ||
282 | switch (entry->product_id) { | |
283 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
284 | switch (usage->code) { | |
285 | case ABS_X: | |
286 | new_value = lg4ff_adjust_dfp_x_axis(value, entry->range); | |
287 | input_event(field->hidinput->input, usage->type, usage->code, new_value); | |
288 | return 1; | |
289 | default: | |
290 | return 0; | |
291 | } | |
292 | default: | |
293 | return 0; | |
294 | } | |
295 | } | |
296 | ||
d0afd848 | 297 | static int lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
32c88cbc SW |
298 | { |
299 | struct hid_device *hid = input_get_drvdata(dev); | |
300 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
301 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
2a552c30 | 302 | s32 *value = report->field[0]->value; |
32c88cbc SW |
303 | int x; |
304 | ||
a80fe5d6 | 305 | #define CLAMP(x) do { if (x < 0) x = 0; else if (x > 0xff) x = 0xff; } while (0) |
32c88cbc SW |
306 | |
307 | switch (effect->type) { | |
308 | case FF_CONSTANT: | |
309 | x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ | |
310 | CLAMP(x); | |
56930e7a SW |
311 | |
312 | if (x == 0x80) { | |
313 | /* De-activate force in slot-1*/ | |
314 | value[0] = 0x13; | |
315 | value[1] = 0x00; | |
316 | value[2] = 0x00; | |
317 | value[3] = 0x00; | |
318 | value[4] = 0x00; | |
319 | value[5] = 0x00; | |
320 | value[6] = 0x00; | |
321 | ||
322 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); | |
323 | return 0; | |
324 | } | |
325 | ||
74479ba8 MM |
326 | value[0] = 0x11; /* Slot 1 */ |
327 | value[1] = 0x08; | |
328 | value[2] = x; | |
329 | value[3] = 0x80; | |
330 | value[4] = 0x00; | |
331 | value[5] = 0x00; | |
332 | value[6] = 0x00; | |
32c88cbc | 333 | |
d8814272 | 334 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
32c88cbc SW |
335 | break; |
336 | } | |
337 | return 0; | |
338 | } | |
339 | ||
6e2de8e0 MM |
340 | /* Sends default autocentering command compatible with |
341 | * all wheels except Formula Force EX */ | |
d0afd848 | 342 | static void lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude) |
32c88cbc SW |
343 | { |
344 | struct hid_device *hid = input_get_drvdata(dev); | |
345 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
346 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
2a552c30 MM |
347 | s32 *value = report->field[0]->value; |
348 | u32 expand_a, expand_b; | |
1859762e SW |
349 | struct lg4ff_device_entry *entry; |
350 | struct lg_drv_data *drv_data; | |
351 | ||
352 | drv_data = hid_get_drvdata(hid); | |
353 | if (!drv_data) { | |
354 | hid_err(hid, "Private driver data not found!\n"); | |
355 | return; | |
356 | } | |
357 | ||
358 | entry = drv_data->device_props; | |
359 | if (!entry) { | |
360 | hid_err(hid, "Device properties not found!\n"); | |
361 | return; | |
362 | } | |
f8c23156 | 363 | |
d2c02da5 SW |
364 | /* De-activate Auto-Center */ |
365 | if (magnitude == 0) { | |
366 | value[0] = 0xf5; | |
367 | value[1] = 0x00; | |
368 | value[2] = 0x00; | |
369 | value[3] = 0x00; | |
370 | value[4] = 0x00; | |
371 | value[5] = 0x00; | |
372 | value[6] = 0x00; | |
373 | ||
374 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); | |
375 | return; | |
376 | } | |
377 | ||
f8c23156 SW |
378 | if (magnitude <= 0xaaaa) { |
379 | expand_a = 0x0c * magnitude; | |
380 | expand_b = 0x80 * magnitude; | |
381 | } else { | |
382 | expand_a = (0x0c * 0xaaaa) + 0x06 * (magnitude - 0xaaaa); | |
383 | expand_b = (0x80 * 0xaaaa) + 0xff * (magnitude - 0xaaaa); | |
384 | } | |
32c88cbc | 385 | |
1859762e SW |
386 | /* Adjust for non-MOMO wheels */ |
387 | switch (entry->product_id) { | |
388 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL: | |
389 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2: | |
390 | break; | |
391 | default: | |
392 | expand_a = expand_a >> 1; | |
393 | break; | |
394 | } | |
395 | ||
74479ba8 MM |
396 | value[0] = 0xfe; |
397 | value[1] = 0x0d; | |
f8c23156 SW |
398 | value[2] = expand_a / 0xaaaa; |
399 | value[3] = expand_a / 0xaaaa; | |
400 | value[4] = expand_b / 0xaaaa; | |
74479ba8 MM |
401 | value[5] = 0x00; |
402 | value[6] = 0x00; | |
32c88cbc | 403 | |
d8814272 | 404 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
d2c02da5 SW |
405 | |
406 | /* Activate Auto-Center */ | |
407 | value[0] = 0x14; | |
408 | value[1] = 0x00; | |
409 | value[2] = 0x00; | |
410 | value[3] = 0x00; | |
411 | value[4] = 0x00; | |
412 | value[5] = 0x00; | |
413 | value[6] = 0x00; | |
414 | ||
415 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); | |
32c88cbc SW |
416 | } |
417 | ||
6e2de8e0 | 418 | /* Sends autocentering command compatible with Formula Force EX */ |
d0afd848 | 419 | static void lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude) |
6e2de8e0 MM |
420 | { |
421 | struct hid_device *hid = input_get_drvdata(dev); | |
422 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
423 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
2a552c30 | 424 | s32 *value = report->field[0]->value; |
6e2de8e0 | 425 | magnitude = magnitude * 90 / 65535; |
6e2de8e0 | 426 | |
74479ba8 MM |
427 | value[0] = 0xfe; |
428 | value[1] = 0x03; | |
429 | value[2] = magnitude >> 14; | |
430 | value[3] = magnitude >> 14; | |
431 | value[4] = magnitude; | |
432 | value[5] = 0x00; | |
433 | value[6] = 0x00; | |
6e2de8e0 | 434 | |
d8814272 | 435 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
6e2de8e0 MM |
436 | } |
437 | ||
30bb75d7 | 438 | /* Sends command to set range compatible with G25/G27/Driving Force GT */ |
d0afd848 | 439 | static void lg4ff_set_range_g25(struct hid_device *hid, u16 range) |
30bb75d7 MM |
440 | { |
441 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
442 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
2a552c30 | 443 | s32 *value = report->field[0]->value; |
74479ba8 | 444 | |
30bb75d7 MM |
445 | dbg_hid("G25/G27/DFGT: setting range to %u\n", range); |
446 | ||
74479ba8 MM |
447 | value[0] = 0xf8; |
448 | value[1] = 0x81; | |
449 | value[2] = range & 0x00ff; | |
450 | value[3] = (range & 0xff00) >> 8; | |
451 | value[4] = 0x00; | |
452 | value[5] = 0x00; | |
453 | value[6] = 0x00; | |
30bb75d7 | 454 | |
d8814272 | 455 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
30bb75d7 MM |
456 | } |
457 | ||
458 | /* Sends commands to set range compatible with Driving Force Pro wheel */ | |
d0afd848 | 459 | static void lg4ff_set_range_dfp(struct hid_device *hid, u16 range) |
30bb75d7 MM |
460 | { |
461 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
462 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
463 | int start_left, start_right, full_range; | |
2a552c30 | 464 | s32 *value = report->field[0]->value; |
74479ba8 | 465 | |
30bb75d7 MM |
466 | dbg_hid("Driving Force Pro: setting range to %u\n", range); |
467 | ||
468 | /* Prepare "coarse" limit command */ | |
74479ba8 | 469 | value[0] = 0xf8; |
a80fe5d6 | 470 | value[1] = 0x00; /* Set later */ |
74479ba8 MM |
471 | value[2] = 0x00; |
472 | value[3] = 0x00; | |
473 | value[4] = 0x00; | |
474 | value[5] = 0x00; | |
475 | value[6] = 0x00; | |
30bb75d7 MM |
476 | |
477 | if (range > 200) { | |
478 | report->field[0]->value[1] = 0x03; | |
479 | full_range = 900; | |
480 | } else { | |
481 | report->field[0]->value[1] = 0x02; | |
482 | full_range = 200; | |
483 | } | |
d8814272 | 484 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
30bb75d7 MM |
485 | |
486 | /* Prepare "fine" limit command */ | |
74479ba8 MM |
487 | value[0] = 0x81; |
488 | value[1] = 0x0b; | |
489 | value[2] = 0x00; | |
490 | value[3] = 0x00; | |
491 | value[4] = 0x00; | |
492 | value[5] = 0x00; | |
493 | value[6] = 0x00; | |
30bb75d7 MM |
494 | |
495 | if (range == 200 || range == 900) { /* Do not apply any fine limit */ | |
d8814272 | 496 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
30bb75d7 MM |
497 | return; |
498 | } | |
499 | ||
500 | /* Construct fine limit command */ | |
501 | start_left = (((full_range - range + 1) * 2047) / full_range); | |
502 | start_right = 0xfff - start_left; | |
503 | ||
74479ba8 MM |
504 | value[2] = start_left >> 4; |
505 | value[3] = start_right >> 4; | |
506 | value[4] = 0xff; | |
507 | value[5] = (start_right & 0xe) << 4 | (start_left & 0xe); | |
508 | value[6] = 0xff; | |
30bb75d7 | 509 | |
d8814272 | 510 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
30bb75d7 MM |
511 | } |
512 | ||
f31a2de3 MM |
513 | static const struct lg4ff_compat_mode_switch *lg4ff_get_mode_switch_command(const u16 real_product_id, const u16 target_product_id) |
514 | { | |
515 | switch (real_product_id) { | |
516 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
517 | switch (target_product_id) { | |
518 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
519 | return &lg4ff_mode_switch_ext01_dfp; | |
520 | /* DFP can only be switched to its native mode */ | |
521 | default: | |
522 | return NULL; | |
523 | } | |
524 | break; | |
525 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: | |
526 | switch (target_product_id) { | |
527 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
528 | return &lg4ff_mode_switch_ext01_dfp; | |
529 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: | |
530 | return &lg4ff_mode_switch_ext16_g25; | |
531 | /* G25 can only be switched to DFP mode or its native mode */ | |
532 | default: | |
533 | return NULL; | |
534 | } | |
535 | break; | |
536 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: | |
537 | switch (target_product_id) { | |
538 | case USB_DEVICE_ID_LOGITECH_WHEEL: | |
539 | return &lg4ff_mode_switch_ext09_dfex; | |
540 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
541 | return &lg4ff_mode_switch_ext09_dfp; | |
542 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: | |
543 | return &lg4ff_mode_switch_ext09_g25; | |
544 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: | |
545 | return &lg4ff_mode_switch_ext09_g27; | |
546 | /* G27 can only be switched to DF-EX, DFP, G25 or its native mode */ | |
547 | default: | |
548 | return NULL; | |
549 | } | |
550 | break; | |
551 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: | |
552 | switch (target_product_id) { | |
553 | case USB_DEVICE_ID_LOGITECH_WHEEL: | |
554 | return &lg4ff_mode_switch_ext09_dfex; | |
555 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
556 | return &lg4ff_mode_switch_ext09_dfp; | |
557 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: | |
558 | return &lg4ff_mode_switch_ext09_dfgt; | |
559 | /* DFGT can only be switched to DF-EX, DFP or its native mode */ | |
560 | default: | |
561 | return NULL; | |
562 | } | |
563 | break; | |
564 | /* No other wheels have multiple modes */ | |
565 | default: | |
566 | return NULL; | |
567 | } | |
568 | } | |
569 | ||
e7c23449 | 570 | static int lg4ff_switch_compatibility_mode(struct hid_device *hid, const struct lg4ff_compat_mode_switch *s) |
96440c8a | 571 | { |
c1740d13 MM |
572 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
573 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
2a552c30 | 574 | s32 *value = report->field[0]->value; |
e7c23449 | 575 | u8 i; |
96440c8a | 576 | |
e7c23449 | 577 | for (i = 0; i < s->cmd_count; i++) { |
c1740d13 | 578 | u8 j; |
96440c8a | 579 | |
c1740d13 MM |
580 | for (j = 0; j < 7; j++) |
581 | value[j] = s->cmd[j + (7*i)]; | |
582 | ||
583 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); | |
96440c8a | 584 | } |
c1740d13 | 585 | hid_hw_wait(hid); |
e7c23449 | 586 | return 0; |
96440c8a | 587 | } |
32c88cbc | 588 | |
b96d23ec MM |
589 | static ssize_t lg4ff_alternate_modes_show(struct device *dev, struct device_attribute *attr, char *buf) |
590 | { | |
591 | struct hid_device *hid = to_hid_device(dev); | |
592 | struct lg4ff_device_entry *entry; | |
593 | struct lg_drv_data *drv_data; | |
594 | ssize_t count = 0; | |
595 | int i; | |
596 | ||
597 | drv_data = hid_get_drvdata(hid); | |
598 | if (!drv_data) { | |
599 | hid_err(hid, "Private driver data not found!\n"); | |
600 | return 0; | |
601 | } | |
602 | ||
603 | entry = drv_data->device_props; | |
604 | if (!entry) { | |
605 | hid_err(hid, "Device properties not found!\n"); | |
606 | return 0; | |
607 | } | |
608 | ||
609 | if (!entry->real_name) { | |
610 | hid_err(hid, "NULL pointer to string\n"); | |
611 | return 0; | |
612 | } | |
613 | ||
614 | for (i = 0; i < LG4FF_MODE_MAX_IDX; i++) { | |
615 | if (entry->alternate_modes & BIT(i)) { | |
616 | /* Print tag and full name */ | |
617 | count += scnprintf(buf + count, PAGE_SIZE - count, "%s: %s", | |
618 | lg4ff_alternate_modes[i].tag, | |
619 | !lg4ff_alternate_modes[i].product_id ? entry->real_name : lg4ff_alternate_modes[i].name); | |
620 | if (count >= PAGE_SIZE - 1) | |
621 | return count; | |
622 | ||
623 | /* Mark the currently active mode with an asterisk */ | |
624 | if (lg4ff_alternate_modes[i].product_id == entry->product_id || | |
625 | (lg4ff_alternate_modes[i].product_id == 0 && entry->product_id == entry->real_product_id)) | |
626 | count += scnprintf(buf + count, PAGE_SIZE - count, " *\n"); | |
627 | else | |
628 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
629 | ||
630 | if (count >= PAGE_SIZE - 1) | |
631 | return count; | |
632 | } | |
633 | } | |
634 | ||
635 | return count; | |
636 | } | |
637 | ||
638 | static ssize_t lg4ff_alternate_modes_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) | |
639 | { | |
f31a2de3 MM |
640 | struct hid_device *hid = to_hid_device(dev); |
641 | struct lg4ff_device_entry *entry; | |
642 | struct lg_drv_data *drv_data; | |
643 | const struct lg4ff_compat_mode_switch *s; | |
644 | u16 target_product_id = 0; | |
645 | int i, ret; | |
646 | char *lbuf; | |
647 | ||
648 | drv_data = hid_get_drvdata(hid); | |
649 | if (!drv_data) { | |
650 | hid_err(hid, "Private driver data not found!\n"); | |
651 | return -EINVAL; | |
652 | } | |
653 | ||
654 | entry = drv_data->device_props; | |
655 | if (!entry) { | |
656 | hid_err(hid, "Device properties not found!\n"); | |
657 | return -EINVAL; | |
658 | } | |
659 | ||
660 | /* Allow \n at the end of the input parameter */ | |
661 | lbuf = kasprintf(GFP_KERNEL, "%s", buf); | |
662 | if (!lbuf) | |
663 | return -ENOMEM; | |
664 | ||
665 | i = strlen(lbuf); | |
666 | if (lbuf[i-1] == '\n') { | |
667 | if (i == 1) { | |
668 | kfree(lbuf); | |
669 | return -EINVAL; | |
670 | } | |
671 | lbuf[i-1] = '\0'; | |
672 | } | |
673 | ||
674 | for (i = 0; i < LG4FF_MODE_MAX_IDX; i++) { | |
675 | const u16 mode_product_id = lg4ff_alternate_modes[i].product_id; | |
676 | const char *tag = lg4ff_alternate_modes[i].tag; | |
677 | ||
678 | if (entry->alternate_modes & BIT(i)) { | |
679 | if (!strcmp(tag, lbuf)) { | |
680 | if (!mode_product_id) | |
681 | target_product_id = entry->real_product_id; | |
682 | else | |
683 | target_product_id = mode_product_id; | |
684 | break; | |
685 | } | |
686 | } | |
687 | } | |
688 | ||
689 | if (i == LG4FF_MODE_MAX_IDX) { | |
690 | hid_info(hid, "Requested mode \"%s\" is not supported by the device\n", lbuf); | |
691 | kfree(lbuf); | |
692 | return -EINVAL; | |
693 | } | |
694 | kfree(lbuf); /* Not needed anymore */ | |
695 | ||
696 | if (target_product_id == entry->product_id) /* Nothing to do */ | |
697 | return count; | |
698 | ||
699 | /* Automatic switching has to be disabled for the switch to DF-EX mode to work correctly */ | |
700 | if (target_product_id == USB_DEVICE_ID_LOGITECH_WHEEL && !lg4ff_no_autoswitch) { | |
701 | 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", | |
702 | entry->real_name); | |
703 | return -EINVAL; | |
704 | } | |
705 | ||
706 | /* Take care of hardware limitations */ | |
707 | if ((entry->real_product_id == USB_DEVICE_ID_LOGITECH_DFP_WHEEL || entry->real_product_id == USB_DEVICE_ID_LOGITECH_G25_WHEEL) && | |
708 | entry->product_id > target_product_id) { | |
709 | hid_info(hid, "\"%s\" cannot be switched back into \"%s\" mode\n", entry->real_name, lg4ff_alternate_modes[i].name); | |
710 | return -EINVAL; | |
711 | } | |
712 | ||
713 | s = lg4ff_get_mode_switch_command(entry->real_product_id, target_product_id); | |
714 | if (!s) { | |
715 | hid_err(hid, "Invalid target product ID %X\n", target_product_id); | |
716 | return -EINVAL; | |
717 | } | |
718 | ||
719 | ret = lg4ff_switch_compatibility_mode(hid, s); | |
720 | return (ret == 0 ? count : ret); | |
b96d23ec MM |
721 | } |
722 | static DEVICE_ATTR(alternate_modes, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, lg4ff_alternate_modes_show, lg4ff_alternate_modes_store); | |
723 | ||
30bb75d7 | 724 | /* Read current range and display it in terminal */ |
2f1cec32 VD |
725 | static ssize_t range_show(struct device *dev, struct device_attribute *attr, |
726 | char *buf) | |
30bb75d7 | 727 | { |
30bb75d7 | 728 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
729 | struct lg4ff_device_entry *entry; |
730 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
731 | size_t count; |
732 | ||
3b6b17b7 MM |
733 | drv_data = hid_get_drvdata(hid); |
734 | if (!drv_data) { | |
735 | hid_err(hid, "Private driver data not found!\n"); | |
736 | return 0; | |
30bb75d7 | 737 | } |
3b6b17b7 MM |
738 | |
739 | entry = drv_data->device_props; | |
740 | if (!entry) { | |
741 | hid_err(hid, "Device properties not found!\n"); | |
30bb75d7 MM |
742 | return 0; |
743 | } | |
744 | ||
745 | count = scnprintf(buf, PAGE_SIZE, "%u\n", entry->range); | |
746 | return count; | |
747 | } | |
748 | ||
749 | /* Set range to user specified value, call appropriate function | |
750 | * according to the type of the wheel */ | |
2f1cec32 VD |
751 | static ssize_t range_store(struct device *dev, struct device_attribute *attr, |
752 | const char *buf, size_t count) | |
30bb75d7 | 753 | { |
30bb75d7 | 754 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
755 | struct lg4ff_device_entry *entry; |
756 | struct lg_drv_data *drv_data; | |
2a552c30 | 757 | u16 range = simple_strtoul(buf, NULL, 10); |
30bb75d7 | 758 | |
3b6b17b7 MM |
759 | drv_data = hid_get_drvdata(hid); |
760 | if (!drv_data) { | |
761 | hid_err(hid, "Private driver data not found!\n"); | |
29ff6657 | 762 | return -EINVAL; |
30bb75d7 | 763 | } |
3b6b17b7 MM |
764 | |
765 | entry = drv_data->device_props; | |
766 | if (!entry) { | |
767 | hid_err(hid, "Device properties not found!\n"); | |
29ff6657 | 768 | return -EINVAL; |
30bb75d7 MM |
769 | } |
770 | ||
771 | if (range == 0) | |
772 | range = entry->max_range; | |
773 | ||
774 | /* Check if the wheel supports range setting | |
775 | * and that the range is within limits for the wheel */ | |
776 | if (entry->set_range != NULL && range >= entry->min_range && range <= entry->max_range) { | |
777 | entry->set_range(hid, range); | |
778 | entry->range = range; | |
779 | } | |
780 | ||
781 | return count; | |
782 | } | |
2f1cec32 | 783 | static DEVICE_ATTR_RW(range); |
30bb75d7 | 784 | |
b96d23ec MM |
785 | static ssize_t lg4ff_real_id_show(struct device *dev, struct device_attribute *attr, char *buf) |
786 | { | |
787 | struct hid_device *hid = to_hid_device(dev); | |
788 | struct lg4ff_device_entry *entry; | |
789 | struct lg_drv_data *drv_data; | |
790 | size_t count; | |
791 | ||
792 | drv_data = hid_get_drvdata(hid); | |
793 | if (!drv_data) { | |
794 | hid_err(hid, "Private driver data not found!\n"); | |
795 | return 0; | |
796 | } | |
797 | ||
798 | entry = drv_data->device_props; | |
799 | if (!entry) { | |
800 | hid_err(hid, "Device properties not found!\n"); | |
801 | return 0; | |
802 | } | |
803 | ||
804 | if (!entry->real_tag || !entry->real_name) { | |
805 | hid_err(hid, "NULL pointer to string\n"); | |
806 | return 0; | |
807 | } | |
808 | ||
809 | count = scnprintf(buf, PAGE_SIZE, "%s: %s\n", entry->real_tag, entry->real_name); | |
810 | return count; | |
811 | } | |
812 | ||
813 | static ssize_t lg4ff_real_id_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) | |
814 | { | |
815 | /* Real ID is a read-only value */ | |
816 | return -EPERM; | |
817 | } | |
818 | static DEVICE_ATTR(real_id, S_IRUGO, lg4ff_real_id_show, lg4ff_real_id_store); | |
819 | ||
22bcefdc | 820 | #ifdef CONFIG_LEDS_CLASS |
2a552c30 | 821 | static void lg4ff_set_leds(struct hid_device *hid, u8 leds) |
22bcefdc SW |
822 | { |
823 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
824 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
2a552c30 | 825 | s32 *value = report->field[0]->value; |
74479ba8 MM |
826 | |
827 | value[0] = 0xf8; | |
828 | value[1] = 0x12; | |
829 | value[2] = leds; | |
830 | value[3] = 0x00; | |
831 | value[4] = 0x00; | |
832 | value[5] = 0x00; | |
833 | value[6] = 0x00; | |
d8814272 | 834 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
22bcefdc SW |
835 | } |
836 | ||
837 | static void lg4ff_led_set_brightness(struct led_classdev *led_cdev, | |
838 | enum led_brightness value) | |
839 | { | |
840 | struct device *dev = led_cdev->dev->parent; | |
841 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
4629fd16 | 842 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
843 | struct lg4ff_device_entry *entry; |
844 | int i, state = 0; | |
845 | ||
846 | if (!drv_data) { | |
847 | hid_err(hid, "Device data not found."); | |
848 | return; | |
849 | } | |
850 | ||
851 | entry = (struct lg4ff_device_entry *)drv_data->device_props; | |
852 | ||
853 | if (!entry) { | |
854 | hid_err(hid, "Device properties not found."); | |
855 | return; | |
856 | } | |
857 | ||
858 | for (i = 0; i < 5; i++) { | |
859 | if (led_cdev != entry->led[i]) | |
860 | continue; | |
861 | state = (entry->led_state >> i) & 1; | |
862 | if (value == LED_OFF && state) { | |
863 | entry->led_state &= ~(1 << i); | |
864 | lg4ff_set_leds(hid, entry->led_state); | |
865 | } else if (value != LED_OFF && !state) { | |
866 | entry->led_state |= 1 << i; | |
867 | lg4ff_set_leds(hid, entry->led_state); | |
868 | } | |
869 | break; | |
870 | } | |
871 | } | |
872 | ||
873 | static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev) | |
874 | { | |
875 | struct device *dev = led_cdev->dev->parent; | |
876 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
4629fd16 | 877 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
878 | struct lg4ff_device_entry *entry; |
879 | int i, value = 0; | |
880 | ||
881 | if (!drv_data) { | |
882 | hid_err(hid, "Device data not found."); | |
883 | return LED_OFF; | |
884 | } | |
885 | ||
886 | entry = (struct lg4ff_device_entry *)drv_data->device_props; | |
887 | ||
888 | if (!entry) { | |
889 | hid_err(hid, "Device properties not found."); | |
890 | return LED_OFF; | |
891 | } | |
892 | ||
893 | for (i = 0; i < 5; i++) | |
894 | if (led_cdev == entry->led[i]) { | |
895 | value = (entry->led_state >> i) & 1; | |
896 | break; | |
897 | } | |
898 | ||
899 | return value ? LED_FULL : LED_OFF; | |
900 | } | |
901 | #endif | |
902 | ||
e7c23449 MM |
903 | static u16 lg4ff_identify_multimode_wheel(struct hid_device *hid, const u16 reported_product_id, const u16 bcdDevice) |
904 | { | |
905 | const struct lg4ff_wheel_ident_checklist *checklist; | |
906 | int i, from_idx, to_idx; | |
907 | ||
908 | switch (reported_product_id) { | |
909 | case USB_DEVICE_ID_LOGITECH_WHEEL: | |
910 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
911 | checklist = &lg4ff_main_checklist; | |
912 | from_idx = 0; | |
913 | to_idx = checklist->count - 1; | |
914 | break; | |
915 | case USB_DEVICE_ID_LOGITECH_G25_WHEEL: | |
916 | checklist = &lg4ff_main_checklist; | |
917 | from_idx = 0; | |
918 | to_idx = checklist->count - 2; /* End identity check at G25 */ | |
919 | break; | |
920 | case USB_DEVICE_ID_LOGITECH_G27_WHEEL: | |
921 | checklist = &lg4ff_main_checklist; | |
922 | from_idx = 1; /* Start identity check at G27 */ | |
923 | to_idx = checklist->count - 3; /* End identity check at G27 */ | |
924 | break; | |
925 | case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL: | |
926 | checklist = &lg4ff_main_checklist; | |
927 | from_idx = 0; | |
928 | to_idx = checklist->count - 4; /* End identity check at DFGT */ | |
929 | break; | |
930 | default: | |
931 | return 0; | |
932 | } | |
933 | ||
934 | for (i = from_idx; i <= to_idx; i++) { | |
935 | const u16 mask = checklist->models[i]->mask; | |
936 | const u16 result = checklist->models[i]->result; | |
937 | const u16 real_product_id = checklist->models[i]->real_product_id; | |
938 | ||
939 | if ((bcdDevice & mask) == result) { | |
940 | dbg_hid("Found wheel with real PID %X whose reported PID is %X\n", real_product_id, reported_product_id); | |
941 | return real_product_id; | |
942 | } | |
943 | } | |
944 | ||
f31a2de3 MM |
945 | /* No match found. This is either Driving Force or an unknown |
946 | * wheel model, do not touch it */ | |
e7c23449 MM |
947 | dbg_hid("Wheel with bcdDevice %X was not recognized as multimode wheel, leaving in its current mode\n", bcdDevice); |
948 | return 0; | |
949 | } | |
950 | ||
951 | static int lg4ff_handle_multimode_wheel(struct hid_device *hid, u16 *real_product_id, const u16 bcdDevice) | |
952 | { | |
953 | const u16 reported_product_id = hid->product; | |
954 | int ret; | |
955 | ||
956 | *real_product_id = lg4ff_identify_multimode_wheel(hid, reported_product_id, bcdDevice); | |
957 | /* Probed wheel is not a multimode wheel */ | |
958 | if (!*real_product_id) { | |
959 | *real_product_id = reported_product_id; | |
960 | dbg_hid("Wheel is not a multimode wheel\n"); | |
961 | return LG4FF_MMODE_NOT_MULTIMODE; | |
962 | } | |
963 | ||
964 | /* Switch from "Driving Force" mode to native mode automatically. | |
965 | * Otherwise keep the wheel in its current mode */ | |
966 | if (reported_product_id == USB_DEVICE_ID_LOGITECH_WHEEL && | |
a54dc779 MM |
967 | reported_product_id != *real_product_id && |
968 | !lg4ff_no_autoswitch) { | |
f31a2de3 | 969 | const struct lg4ff_compat_mode_switch *s = lg4ff_get_mode_switch_command(*real_product_id, *real_product_id); |
e7c23449 | 970 | |
f31a2de3 | 971 | if (!s) { |
e7c23449 | 972 | hid_err(hid, "Invalid product id %X\n", *real_product_id); |
b96d23ec | 973 | return LG4FF_MMODE_NOT_MULTIMODE; |
e7c23449 MM |
974 | } |
975 | ||
976 | ret = lg4ff_switch_compatibility_mode(hid, s); | |
977 | if (ret) { | |
978 | /* Wheel could not have been switched to native mode, | |
979 | * leave it in "Driving Force" mode and continue */ | |
980 | hid_err(hid, "Unable to switch wheel mode, errno %d\n", ret); | |
b96d23ec | 981 | return LG4FF_MMODE_IS_MULTIMODE; |
e7c23449 MM |
982 | } |
983 | return LG4FF_MMODE_SWITCHED; | |
984 | } | |
985 | ||
b96d23ec | 986 | return LG4FF_MMODE_IS_MULTIMODE; |
e7c23449 MM |
987 | } |
988 | ||
989 | ||
32c88cbc SW |
990 | int lg4ff_init(struct hid_device *hid) |
991 | { | |
992 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); | |
32c88cbc | 993 | struct input_dev *dev = hidinput->input; |
e7c23449 MM |
994 | const struct usb_device_descriptor *udesc = &(hid_to_usb_dev(hid)->descriptor); |
995 | const u16 bcdDevice = le16_to_cpu(udesc->bcdDevice); | |
30bb75d7 | 996 | struct lg4ff_device_entry *entry; |
3b6b17b7 | 997 | struct lg_drv_data *drv_data; |
b96d23ec MM |
998 | int error, i, j; |
999 | int mmode_ret, mmode_idx = -1; | |
e7c23449 | 1000 | u16 real_product_id; |
32c88cbc | 1001 | |
32c88cbc | 1002 | /* Check that the report looks ok */ |
0fb6bd06 | 1003 | if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7)) |
32c88cbc | 1004 | return -1; |
30bb75d7 | 1005 | |
e7c23449 MM |
1006 | /* Check if a multimode wheel has been connected and |
1007 | * handle it appropriately */ | |
b96d23ec | 1008 | mmode_ret = lg4ff_handle_multimode_wheel(hid, &real_product_id, bcdDevice); |
e7c23449 MM |
1009 | |
1010 | /* Wheel has been told to switch to native mode. There is no point in going on | |
1011 | * with the initialization as the wheel will do a USB reset when it switches mode | |
1012 | */ | |
b96d23ec | 1013 | if (mmode_ret == LG4FF_MMODE_SWITCHED) |
e7c23449 MM |
1014 | return 0; |
1015 | ||
7362cd22 MM |
1016 | /* Check what wheel has been connected */ |
1017 | for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { | |
1018 | if (hid->product == lg4ff_devices[i].product_id) { | |
1019 | dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id); | |
1020 | break; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | if (i == ARRAY_SIZE(lg4ff_devices)) { | |
1025 | hid_err(hid, "Device is not supported by lg4ff driver. If you think it should be, consider reporting a bug to" | |
1026 | "LKML, Simon Wood <simon@mungewell.org> or Michal Maly <madcatxster@gmail.com>\n"); | |
1027 | return -1; | |
1028 | } | |
32c88cbc | 1029 | |
b96d23ec MM |
1030 | if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
1031 | for (mmode_idx = 0; mmode_idx < ARRAY_SIZE(lg4ff_multimode_wheels); mmode_idx++) { | |
1032 | if (real_product_id == lg4ff_multimode_wheels[mmode_idx].product_id) | |
1033 | break; | |
1034 | } | |
1035 | ||
1036 | if (mmode_idx == ARRAY_SIZE(lg4ff_multimode_wheels)) { | |
1037 | hid_err(hid, "Device product ID %X is not listed as a multimode wheel", real_product_id); | |
1038 | return -1; | |
1039 | } | |
1040 | } | |
1041 | ||
7362cd22 MM |
1042 | /* Set supported force feedback capabilities */ |
1043 | for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) | |
1044 | set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); | |
32c88cbc | 1045 | |
d0afd848 | 1046 | error = input_ff_create_memless(dev, NULL, lg4ff_play); |
32c88cbc SW |
1047 | |
1048 | if (error) | |
1049 | return error; | |
1050 | ||
3b6b17b7 MM |
1051 | /* Get private driver data */ |
1052 | drv_data = hid_get_drvdata(hid); | |
1053 | if (!drv_data) { | |
1054 | hid_err(hid, "Cannot add device, private driver data not allocated\n"); | |
1055 | return -1; | |
30bb75d7 MM |
1056 | } |
1057 | ||
3b6b17b7 | 1058 | /* Initialize device properties */ |
8383c6bf | 1059 | entry = kzalloc(sizeof(struct lg4ff_device_entry), GFP_KERNEL); |
30bb75d7 | 1060 | if (!entry) { |
3b6b17b7 | 1061 | hid_err(hid, "Cannot add device, insufficient memory to allocate device properties.\n"); |
30bb75d7 MM |
1062 | return -ENOMEM; |
1063 | } | |
3b6b17b7 MM |
1064 | drv_data->device_props = entry; |
1065 | ||
2b24a960 | 1066 | entry->product_id = lg4ff_devices[i].product_id; |
b96d23ec | 1067 | entry->real_product_id = real_product_id; |
30bb75d7 MM |
1068 | entry->min_range = lg4ff_devices[i].min_range; |
1069 | entry->max_range = lg4ff_devices[i].max_range; | |
1070 | entry->set_range = lg4ff_devices[i].set_range; | |
b96d23ec MM |
1071 | if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
1072 | BUG_ON(mmode_idx == -1); | |
1073 | entry->alternate_modes = lg4ff_multimode_wheels[mmode_idx].alternate_modes; | |
1074 | entry->real_tag = lg4ff_multimode_wheels[mmode_idx].real_tag; | |
1075 | entry->real_name = lg4ff_multimode_wheels[mmode_idx].real_name; | |
1076 | } | |
30bb75d7 | 1077 | |
114a55cf SW |
1078 | /* Check if autocentering is available and |
1079 | * set the centering force to zero by default */ | |
1080 | if (test_bit(FF_AUTOCENTER, dev->ffbit)) { | |
e7c23449 MM |
1081 | /* Formula Force EX expects different autocentering command */ |
1082 | if ((bcdDevice >> 8) == LG4FF_FFEX_REV_MAJ && | |
1083 | (bcdDevice & 0xff) == LG4FF_FFEX_REV_MIN) | |
d0afd848 | 1084 | dev->ff->set_autocenter = lg4ff_set_autocenter_ffex; |
114a55cf | 1085 | else |
d0afd848 | 1086 | dev->ff->set_autocenter = lg4ff_set_autocenter_default; |
114a55cf SW |
1087 | |
1088 | dev->ff->set_autocenter(dev, 0); | |
1089 | } | |
1090 | ||
30bb75d7 MM |
1091 | /* Create sysfs interface */ |
1092 | error = device_create_file(&hid->dev, &dev_attr_range); | |
1093 | if (error) | |
1094 | return error; | |
b96d23ec MM |
1095 | if (mmode_ret == LG4FF_MMODE_IS_MULTIMODE) { |
1096 | error = device_create_file(&hid->dev, &dev_attr_real_id); | |
1097 | if (error) | |
1098 | return error; | |
1099 | error = device_create_file(&hid->dev, &dev_attr_alternate_modes); | |
1100 | if (error) | |
1101 | return error; | |
1102 | } | |
30bb75d7 MM |
1103 | dbg_hid("sysfs interface created\n"); |
1104 | ||
1105 | /* Set the maximum range to start with */ | |
1106 | entry->range = entry->max_range; | |
1107 | if (entry->set_range != NULL) | |
1108 | entry->set_range(hid, entry->range); | |
1109 | ||
22bcefdc SW |
1110 | #ifdef CONFIG_LEDS_CLASS |
1111 | /* register led subsystem - G27 only */ | |
1112 | entry->led_state = 0; | |
1113 | for (j = 0; j < 5; j++) | |
1114 | entry->led[j] = NULL; | |
1115 | ||
1116 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G27_WHEEL) { | |
1117 | struct led_classdev *led; | |
1118 | size_t name_sz; | |
1119 | char *name; | |
1120 | ||
1121 | lg4ff_set_leds(hid, 0); | |
1122 | ||
1123 | name_sz = strlen(dev_name(&hid->dev)) + 8; | |
1124 | ||
1125 | for (j = 0; j < 5; j++) { | |
1126 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); | |
1127 | if (!led) { | |
1128 | hid_err(hid, "can't allocate memory for LED %d\n", j); | |
1129 | goto err; | |
1130 | } | |
1131 | ||
1132 | name = (void *)(&led[1]); | |
1133 | snprintf(name, name_sz, "%s::RPM%d", dev_name(&hid->dev), j+1); | |
1134 | led->name = name; | |
1135 | led->brightness = 0; | |
1136 | led->max_brightness = 1; | |
1137 | led->brightness_get = lg4ff_led_get_brightness; | |
1138 | led->brightness_set = lg4ff_led_set_brightness; | |
1139 | ||
1140 | entry->led[j] = led; | |
1141 | error = led_classdev_register(&hid->dev, led); | |
1142 | ||
1143 | if (error) { | |
1144 | hid_err(hid, "failed to register LED %d. Aborting.\n", j); | |
1145 | err: | |
1146 | /* Deregister LEDs (if any) */ | |
1147 | for (j = 0; j < 5; j++) { | |
1148 | led = entry->led[j]; | |
1149 | entry->led[j] = NULL; | |
1150 | if (!led) | |
1151 | continue; | |
1152 | led_classdev_unregister(led); | |
1153 | kfree(led); | |
1154 | } | |
1155 | goto out; /* Let the driver continue without LEDs */ | |
1156 | } | |
1157 | } | |
1158 | } | |
22bcefdc | 1159 | out: |
c6e6dc87 | 1160 | #endif |
64013800 | 1161 | hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n"); |
32c88cbc SW |
1162 | return 0; |
1163 | } | |
1164 | ||
30bb75d7 MM |
1165 | int lg4ff_deinit(struct hid_device *hid) |
1166 | { | |
30bb75d7 | 1167 | struct lg4ff_device_entry *entry; |
3b6b17b7 MM |
1168 | struct lg_drv_data *drv_data; |
1169 | ||
3b6b17b7 MM |
1170 | drv_data = hid_get_drvdata(hid); |
1171 | if (!drv_data) { | |
1172 | hid_err(hid, "Error while deinitializing device, no private driver data.\n"); | |
1173 | return -1; | |
30bb75d7 | 1174 | } |
3b6b17b7 | 1175 | entry = drv_data->device_props; |
e7c23449 MM |
1176 | if (!entry) |
1177 | goto out; /* Nothing more to do */ | |
1178 | ||
1179 | device_remove_file(&hid->dev, &dev_attr_range); | |
22bcefdc | 1180 | |
b96d23ec MM |
1181 | /* Multimode devices will have at least the "MODE_NATIVE" bit set */ |
1182 | if (entry->alternate_modes) { | |
1183 | device_remove_file(&hid->dev, &dev_attr_real_id); | |
1184 | device_remove_file(&hid->dev, &dev_attr_alternate_modes); | |
1185 | } | |
1186 | ||
22bcefdc SW |
1187 | #ifdef CONFIG_LEDS_CLASS |
1188 | { | |
1189 | int j; | |
1190 | struct led_classdev *led; | |
1191 | ||
1192 | /* Deregister LEDs (if any) */ | |
1193 | for (j = 0; j < 5; j++) { | |
1194 | ||
1195 | led = entry->led[j]; | |
1196 | entry->led[j] = NULL; | |
1197 | if (!led) | |
1198 | continue; | |
1199 | led_classdev_unregister(led); | |
1200 | kfree(led); | |
1201 | } | |
1202 | } | |
1203 | #endif | |
1204 | ||
3b6b17b7 MM |
1205 | /* Deallocate memory */ |
1206 | kfree(entry); | |
30bb75d7 | 1207 | |
e7c23449 | 1208 | out: |
30bb75d7 MM |
1209 | dbg_hid("Device successfully unregistered\n"); |
1210 | return 0; | |
1211 | } |