Root/
1 | /* |
2 | * Force feedback support for Logitech Gaming Wheels |
3 | * |
4 | * Including G27, G25, DFP, DFGT, FFEX, Momo, Momo2 & |
5 | * Speed Force Wireless (WiiWheel) |
6 | * |
7 | * Copyright (c) 2010 Simon Wood <simon@mungewell.org> |
8 | */ |
9 | |
10 | /* |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of the GNU General Public License as published by |
13 | * the Free Software Foundation; either version 2 of the License, or |
14 | * (at your option) any later version. |
15 | * |
16 | * This program is distributed in the hope that it will be useful, |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
19 | * GNU General Public License for more details. |
20 | * |
21 | * You should have received a copy of the GNU General Public License |
22 | * along with this program; if not, write to the Free Software |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
24 | */ |
25 | |
26 | |
27 | #include <linux/input.h> |
28 | #include <linux/usb.h> |
29 | #include <linux/hid.h> |
30 | |
31 | #include "usbhid/usbhid.h" |
32 | #include "hid-lg.h" |
33 | #include "hid-ids.h" |
34 | |
35 | #define DFGT_REV_MAJ 0x13 |
36 | #define DFGT_REV_MIN 0x22 |
37 | #define DFP_REV_MAJ 0x11 |
38 | #define DFP_REV_MIN 0x06 |
39 | #define FFEX_REV_MAJ 0x21 |
40 | #define FFEX_REV_MIN 0x00 |
41 | #define G25_REV_MAJ 0x12 |
42 | #define G25_REV_MIN 0x22 |
43 | #define G27_REV_MAJ 0x12 |
44 | #define G27_REV_MIN 0x38 |
45 | |
46 | #define to_hid_device(pdev) container_of(pdev, struct hid_device, dev) |
47 | |
48 | static void hid_lg4ff_set_range_dfp(struct hid_device *hid, u16 range); |
49 | static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range); |
50 | static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, char *buf); |
51 | static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); |
52 | |
53 | static DEVICE_ATTR(range, S_IRWXU | S_IRWXG | S_IRWXO, lg4ff_range_show, lg4ff_range_store); |
54 | |
55 | struct lg4ff_device_entry { |
56 | __u32 product_id; |
57 | __u16 range; |
58 | __u16 min_range; |
59 | __u16 max_range; |
60 | #ifdef CONFIG_LEDS_CLASS |
61 | __u8 led_state; |
62 | struct led_classdev *led[5]; |
63 | #endif |
64 | struct list_head list; |
65 | void (*set_range)(struct hid_device *hid, u16 range); |
66 | }; |
67 | |
68 | static const signed short lg4ff_wheel_effects[] = { |
69 | FF_CONSTANT, |
70 | FF_AUTOCENTER, |
71 | -1 |
72 | }; |
73 | |
74 | struct lg4ff_wheel { |
75 | const __u32 product_id; |
76 | const signed short *ff_effects; |
77 | const __u16 min_range; |
78 | const __u16 max_range; |
79 | void (*set_range)(struct hid_device *hid, u16 range); |
80 | }; |
81 | |
82 | static const struct lg4ff_wheel lg4ff_devices[] = { |
83 | {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
84 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
85 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_dfp}, |
86 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, |
87 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, |
88 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, |
89 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270, NULL}, |
90 | {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} |
91 | }; |
92 | |
93 | struct lg4ff_native_cmd { |
94 | const __u8 cmd_num; /* Number of commands to send */ |
95 | const __u8 cmd[]; |
96 | }; |
97 | |
98 | struct lg4ff_usb_revision { |
99 | const __u16 rev_maj; |
100 | const __u16 rev_min; |
101 | const struct lg4ff_native_cmd *command; |
102 | }; |
103 | |
104 | static const struct lg4ff_native_cmd native_dfp = { |
105 | 1, |
106 | {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} |
107 | }; |
108 | |
109 | static const struct lg4ff_native_cmd native_dfgt = { |
110 | 2, |
111 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ |
112 | 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ |
113 | }; |
114 | |
115 | static const struct lg4ff_native_cmd native_g25 = { |
116 | 1, |
117 | {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} |
118 | }; |
119 | |
120 | static const struct lg4ff_native_cmd native_g27 = { |
121 | 2, |
122 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ |
123 | 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ |
124 | }; |
125 | |
126 | static const struct lg4ff_usb_revision lg4ff_revs[] = { |
127 | {DFGT_REV_MAJ, DFGT_REV_MIN, &native_dfgt}, /* Driving Force GT */ |
128 | {DFP_REV_MAJ, DFP_REV_MIN, &native_dfp}, /* Driving Force Pro */ |
129 | {G25_REV_MAJ, G25_REV_MIN, &native_g25}, /* G25 */ |
130 | {G27_REV_MAJ, G27_REV_MIN, &native_g27}, /* G27 */ |
131 | }; |
132 | |
133 | /* Recalculates X axis value accordingly to currently selected range */ |
134 | static __s32 lg4ff_adjust_dfp_x_axis(__s32 value, __u16 range) |
135 | { |
136 | __u16 max_range; |
137 | __s32 new_value; |
138 | |
139 | if (range == 900) |
140 | return value; |
141 | else if (range == 200) |
142 | return value; |
143 | else if (range < 200) |
144 | max_range = 200; |
145 | else |
146 | max_range = 900; |
147 | |
148 | new_value = 8192 + mult_frac(value - 8192, max_range, range); |
149 | if (new_value < 0) |
150 | return 0; |
151 | else if (new_value > 16383) |
152 | return 16383; |
153 | else |
154 | return new_value; |
155 | } |
156 | |
157 | int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_field *field, |
158 | struct hid_usage *usage, __s32 value, struct lg_drv_data *drv_data) |
159 | { |
160 | struct lg4ff_device_entry *entry = drv_data->device_props; |
161 | __s32 new_value = 0; |
162 | |
163 | if (!entry) { |
164 | hid_err(hid, "Device properties not found"); |
165 | return 0; |
166 | } |
167 | |
168 | switch (entry->product_id) { |
169 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: |
170 | switch (usage->code) { |
171 | case ABS_X: |
172 | new_value = lg4ff_adjust_dfp_x_axis(value, entry->range); |
173 | input_event(field->hidinput->input, usage->type, usage->code, new_value); |
174 | return 1; |
175 | default: |
176 | return 0; |
177 | } |
178 | default: |
179 | return 0; |
180 | } |
181 | } |
182 | |
183 | static int hid_lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
184 | { |
185 | struct hid_device *hid = input_get_drvdata(dev); |
186 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
187 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
188 | __s32 *value = report->field[0]->value; |
189 | int x; |
190 | |
191 | #define CLAMP(x) do { if (x < 0) x = 0; else if (x > 0xff) x = 0xff; } while (0) |
192 | |
193 | switch (effect->type) { |
194 | case FF_CONSTANT: |
195 | x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ |
196 | CLAMP(x); |
197 | value[0] = 0x11; /* Slot 1 */ |
198 | value[1] = 0x08; |
199 | value[2] = x; |
200 | value[3] = 0x80; |
201 | value[4] = 0x00; |
202 | value[5] = 0x00; |
203 | value[6] = 0x00; |
204 | |
205 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
206 | break; |
207 | } |
208 | return 0; |
209 | } |
210 | |
211 | /* Sends default autocentering command compatible with |
212 | * all wheels except Formula Force EX */ |
213 | static void hid_lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude) |
214 | { |
215 | struct hid_device *hid = input_get_drvdata(dev); |
216 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
217 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
218 | __s32 *value = report->field[0]->value; |
219 | |
220 | value[0] = 0xfe; |
221 | value[1] = 0x0d; |
222 | value[2] = magnitude >> 13; |
223 | value[3] = magnitude >> 13; |
224 | value[4] = magnitude >> 8; |
225 | value[5] = 0x00; |
226 | value[6] = 0x00; |
227 | |
228 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
229 | } |
230 | |
231 | /* Sends autocentering command compatible with Formula Force EX */ |
232 | static void hid_lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude) |
233 | { |
234 | struct hid_device *hid = input_get_drvdata(dev); |
235 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
236 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
237 | __s32 *value = report->field[0]->value; |
238 | magnitude = magnitude * 90 / 65535; |
239 | |
240 | value[0] = 0xfe; |
241 | value[1] = 0x03; |
242 | value[2] = magnitude >> 14; |
243 | value[3] = magnitude >> 14; |
244 | value[4] = magnitude; |
245 | value[5] = 0x00; |
246 | value[6] = 0x00; |
247 | |
248 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
249 | } |
250 | |
251 | /* Sends command to set range compatible with G25/G27/Driving Force GT */ |
252 | static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range) |
253 | { |
254 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
255 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
256 | __s32 *value = report->field[0]->value; |
257 | |
258 | dbg_hid("G25/G27/DFGT: setting range to %u\n", range); |
259 | |
260 | value[0] = 0xf8; |
261 | value[1] = 0x81; |
262 | value[2] = range & 0x00ff; |
263 | value[3] = (range & 0xff00) >> 8; |
264 | value[4] = 0x00; |
265 | value[5] = 0x00; |
266 | value[6] = 0x00; |
267 | |
268 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
269 | } |
270 | |
271 | /* Sends commands to set range compatible with Driving Force Pro wheel */ |
272 | static void hid_lg4ff_set_range_dfp(struct hid_device *hid, __u16 range) |
273 | { |
274 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
275 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
276 | int start_left, start_right, full_range; |
277 | __s32 *value = report->field[0]->value; |
278 | |
279 | dbg_hid("Driving Force Pro: setting range to %u\n", range); |
280 | |
281 | /* Prepare "coarse" limit command */ |
282 | value[0] = 0xf8; |
283 | value[1] = 0x00; /* Set later */ |
284 | value[2] = 0x00; |
285 | value[3] = 0x00; |
286 | value[4] = 0x00; |
287 | value[5] = 0x00; |
288 | value[6] = 0x00; |
289 | |
290 | if (range > 200) { |
291 | report->field[0]->value[1] = 0x03; |
292 | full_range = 900; |
293 | } else { |
294 | report->field[0]->value[1] = 0x02; |
295 | full_range = 200; |
296 | } |
297 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
298 | |
299 | /* Prepare "fine" limit command */ |
300 | value[0] = 0x81; |
301 | value[1] = 0x0b; |
302 | value[2] = 0x00; |
303 | value[3] = 0x00; |
304 | value[4] = 0x00; |
305 | value[5] = 0x00; |
306 | value[6] = 0x00; |
307 | |
308 | if (range == 200 || range == 900) { /* Do not apply any fine limit */ |
309 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
310 | return; |
311 | } |
312 | |
313 | /* Construct fine limit command */ |
314 | start_left = (((full_range - range + 1) * 2047) / full_range); |
315 | start_right = 0xfff - start_left; |
316 | |
317 | value[2] = start_left >> 4; |
318 | value[3] = start_right >> 4; |
319 | value[4] = 0xff; |
320 | value[5] = (start_right & 0xe) << 4 | (start_left & 0xe); |
321 | value[6] = 0xff; |
322 | |
323 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
324 | } |
325 | |
326 | static void hid_lg4ff_switch_native(struct hid_device *hid, const struct lg4ff_native_cmd *cmd) |
327 | { |
328 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
329 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
330 | __u8 i, j; |
331 | |
332 | j = 0; |
333 | while (j < 7*cmd->cmd_num) { |
334 | for (i = 0; i < 7; i++) |
335 | report->field[0]->value[i] = cmd->cmd[j++]; |
336 | |
337 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
338 | } |
339 | } |
340 | |
341 | /* Read current range and display it in terminal */ |
342 | static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, char *buf) |
343 | { |
344 | struct hid_device *hid = to_hid_device(dev); |
345 | struct lg4ff_device_entry *entry; |
346 | struct lg_drv_data *drv_data; |
347 | size_t count; |
348 | |
349 | drv_data = hid_get_drvdata(hid); |
350 | if (!drv_data) { |
351 | hid_err(hid, "Private driver data not found!\n"); |
352 | return 0; |
353 | } |
354 | |
355 | entry = drv_data->device_props; |
356 | if (!entry) { |
357 | hid_err(hid, "Device properties not found!\n"); |
358 | return 0; |
359 | } |
360 | |
361 | count = scnprintf(buf, PAGE_SIZE, "%u\n", entry->range); |
362 | return count; |
363 | } |
364 | |
365 | /* Set range to user specified value, call appropriate function |
366 | * according to the type of the wheel */ |
367 | static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
368 | { |
369 | struct hid_device *hid = to_hid_device(dev); |
370 | struct lg4ff_device_entry *entry; |
371 | struct lg_drv_data *drv_data; |
372 | __u16 range = simple_strtoul(buf, NULL, 10); |
373 | |
374 | drv_data = hid_get_drvdata(hid); |
375 | if (!drv_data) { |
376 | hid_err(hid, "Private driver data not found!\n"); |
377 | return 0; |
378 | } |
379 | |
380 | entry = drv_data->device_props; |
381 | if (!entry) { |
382 | hid_err(hid, "Device properties not found!\n"); |
383 | return 0; |
384 | } |
385 | |
386 | if (range == 0) |
387 | range = entry->max_range; |
388 | |
389 | /* Check if the wheel supports range setting |
390 | * and that the range is within limits for the wheel */ |
391 | if (entry->set_range != NULL && range >= entry->min_range && range <= entry->max_range) { |
392 | entry->set_range(hid, range); |
393 | entry->range = range; |
394 | } |
395 | |
396 | return count; |
397 | } |
398 | |
399 | #ifdef CONFIG_LEDS_CLASS |
400 | static void lg4ff_set_leds(struct hid_device *hid, __u8 leds) |
401 | { |
402 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
403 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); |
404 | __s32 *value = report->field[0]->value; |
405 | |
406 | value[0] = 0xf8; |
407 | value[1] = 0x12; |
408 | value[2] = leds; |
409 | value[3] = 0x00; |
410 | value[4] = 0x00; |
411 | value[5] = 0x00; |
412 | value[6] = 0x00; |
413 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
414 | } |
415 | |
416 | static void lg4ff_led_set_brightness(struct led_classdev *led_cdev, |
417 | enum led_brightness value) |
418 | { |
419 | struct device *dev = led_cdev->dev->parent; |
420 | struct hid_device *hid = container_of(dev, struct hid_device, dev); |
421 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
422 | struct lg4ff_device_entry *entry; |
423 | int i, state = 0; |
424 | |
425 | if (!drv_data) { |
426 | hid_err(hid, "Device data not found."); |
427 | return; |
428 | } |
429 | |
430 | entry = (struct lg4ff_device_entry *)drv_data->device_props; |
431 | |
432 | if (!entry) { |
433 | hid_err(hid, "Device properties not found."); |
434 | return; |
435 | } |
436 | |
437 | for (i = 0; i < 5; i++) { |
438 | if (led_cdev != entry->led[i]) |
439 | continue; |
440 | state = (entry->led_state >> i) & 1; |
441 | if (value == LED_OFF && state) { |
442 | entry->led_state &= ~(1 << i); |
443 | lg4ff_set_leds(hid, entry->led_state); |
444 | } else if (value != LED_OFF && !state) { |
445 | entry->led_state |= 1 << i; |
446 | lg4ff_set_leds(hid, entry->led_state); |
447 | } |
448 | break; |
449 | } |
450 | } |
451 | |
452 | static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev) |
453 | { |
454 | struct device *dev = led_cdev->dev->parent; |
455 | struct hid_device *hid = container_of(dev, struct hid_device, dev); |
456 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
457 | struct lg4ff_device_entry *entry; |
458 | int i, value = 0; |
459 | |
460 | if (!drv_data) { |
461 | hid_err(hid, "Device data not found."); |
462 | return LED_OFF; |
463 | } |
464 | |
465 | entry = (struct lg4ff_device_entry *)drv_data->device_props; |
466 | |
467 | if (!entry) { |
468 | hid_err(hid, "Device properties not found."); |
469 | return LED_OFF; |
470 | } |
471 | |
472 | for (i = 0; i < 5; i++) |
473 | if (led_cdev == entry->led[i]) { |
474 | value = (entry->led_state >> i) & 1; |
475 | break; |
476 | } |
477 | |
478 | return value ? LED_FULL : LED_OFF; |
479 | } |
480 | #endif |
481 | |
482 | int lg4ff_init(struct hid_device *hid) |
483 | { |
484 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
485 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
486 | struct input_dev *dev = hidinput->input; |
487 | struct hid_report *report; |
488 | struct hid_field *field; |
489 | struct lg4ff_device_entry *entry; |
490 | struct lg_drv_data *drv_data; |
491 | struct usb_device_descriptor *udesc; |
492 | int error, i, j; |
493 | __u16 bcdDevice, rev_maj, rev_min; |
494 | |
495 | /* Find the report to use */ |
496 | if (list_empty(report_list)) { |
497 | hid_err(hid, "No output report found\n"); |
498 | return -1; |
499 | } |
500 | |
501 | /* Check that the report looks ok */ |
502 | report = list_entry(report_list->next, struct hid_report, list); |
503 | if (!report) { |
504 | hid_err(hid, "NULL output report\n"); |
505 | return -1; |
506 | } |
507 | |
508 | field = report->field[0]; |
509 | if (!field) { |
510 | hid_err(hid, "NULL field\n"); |
511 | return -1; |
512 | } |
513 | |
514 | /* Check what wheel has been connected */ |
515 | for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { |
516 | if (hid->product == lg4ff_devices[i].product_id) { |
517 | dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id); |
518 | break; |
519 | } |
520 | } |
521 | |
522 | if (i == ARRAY_SIZE(lg4ff_devices)) { |
523 | hid_err(hid, "Device is not supported by lg4ff driver. If you think it should be, consider reporting a bug to" |
524 | "LKML, Simon Wood <simon@mungewell.org> or Michal Maly <madcatxster@gmail.com>\n"); |
525 | return -1; |
526 | } |
527 | |
528 | /* Attempt to switch wheel to native mode when applicable */ |
529 | udesc = &(hid_to_usb_dev(hid)->descriptor); |
530 | if (!udesc) { |
531 | hid_err(hid, "NULL USB device descriptor\n"); |
532 | return -1; |
533 | } |
534 | bcdDevice = le16_to_cpu(udesc->bcdDevice); |
535 | rev_maj = bcdDevice >> 8; |
536 | rev_min = bcdDevice & 0xff; |
537 | |
538 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_WHEEL) { |
539 | dbg_hid("Generic wheel detected, can it do native?\n"); |
540 | dbg_hid("USB revision: %2x.%02x\n", rev_maj, rev_min); |
541 | |
542 | for (j = 0; j < ARRAY_SIZE(lg4ff_revs); j++) { |
543 | if (lg4ff_revs[j].rev_maj == rev_maj && lg4ff_revs[j].rev_min == rev_min) { |
544 | hid_lg4ff_switch_native(hid, lg4ff_revs[j].command); |
545 | hid_info(hid, "Switched to native mode\n"); |
546 | } |
547 | } |
548 | } |
549 | |
550 | /* Set supported force feedback capabilities */ |
551 | for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) |
552 | set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); |
553 | |
554 | error = input_ff_create_memless(dev, NULL, hid_lg4ff_play); |
555 | |
556 | if (error) |
557 | return error; |
558 | |
559 | /* Check if autocentering is available and |
560 | * set the centering force to zero by default */ |
561 | if (test_bit(FF_AUTOCENTER, dev->ffbit)) { |
562 | if (rev_maj == FFEX_REV_MAJ && rev_min == FFEX_REV_MIN) /* Formula Force EX expects different autocentering command */ |
563 | dev->ff->set_autocenter = hid_lg4ff_set_autocenter_ffex; |
564 | else |
565 | dev->ff->set_autocenter = hid_lg4ff_set_autocenter_default; |
566 | |
567 | dev->ff->set_autocenter(dev, 0); |
568 | } |
569 | |
570 | /* Get private driver data */ |
571 | drv_data = hid_get_drvdata(hid); |
572 | if (!drv_data) { |
573 | hid_err(hid, "Cannot add device, private driver data not allocated\n"); |
574 | return -1; |
575 | } |
576 | |
577 | /* Initialize device properties */ |
578 | entry = kzalloc(sizeof(struct lg4ff_device_entry), GFP_KERNEL); |
579 | if (!entry) { |
580 | hid_err(hid, "Cannot add device, insufficient memory to allocate device properties.\n"); |
581 | return -ENOMEM; |
582 | } |
583 | drv_data->device_props = entry; |
584 | |
585 | entry->product_id = lg4ff_devices[i].product_id; |
586 | entry->min_range = lg4ff_devices[i].min_range; |
587 | entry->max_range = lg4ff_devices[i].max_range; |
588 | entry->set_range = lg4ff_devices[i].set_range; |
589 | |
590 | /* Create sysfs interface */ |
591 | error = device_create_file(&hid->dev, &dev_attr_range); |
592 | if (error) |
593 | return error; |
594 | dbg_hid("sysfs interface created\n"); |
595 | |
596 | /* Set the maximum range to start with */ |
597 | entry->range = entry->max_range; |
598 | if (entry->set_range != NULL) |
599 | entry->set_range(hid, entry->range); |
600 | |
601 | #ifdef CONFIG_LEDS_CLASS |
602 | /* register led subsystem - G27 only */ |
603 | entry->led_state = 0; |
604 | for (j = 0; j < 5; j++) |
605 | entry->led[j] = NULL; |
606 | |
607 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G27_WHEEL) { |
608 | struct led_classdev *led; |
609 | size_t name_sz; |
610 | char *name; |
611 | |
612 | lg4ff_set_leds(hid, 0); |
613 | |
614 | name_sz = strlen(dev_name(&hid->dev)) + 8; |
615 | |
616 | for (j = 0; j < 5; j++) { |
617 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); |
618 | if (!led) { |
619 | hid_err(hid, "can't allocate memory for LED %d\n", j); |
620 | goto err; |
621 | } |
622 | |
623 | name = (void *)(&led[1]); |
624 | snprintf(name, name_sz, "%s::RPM%d", dev_name(&hid->dev), j+1); |
625 | led->name = name; |
626 | led->brightness = 0; |
627 | led->max_brightness = 1; |
628 | led->brightness_get = lg4ff_led_get_brightness; |
629 | led->brightness_set = lg4ff_led_set_brightness; |
630 | |
631 | entry->led[j] = led; |
632 | error = led_classdev_register(&hid->dev, led); |
633 | |
634 | if (error) { |
635 | hid_err(hid, "failed to register LED %d. Aborting.\n", j); |
636 | err: |
637 | /* Deregister LEDs (if any) */ |
638 | for (j = 0; j < 5; j++) { |
639 | led = entry->led[j]; |
640 | entry->led[j] = NULL; |
641 | if (!led) |
642 | continue; |
643 | led_classdev_unregister(led); |
644 | kfree(led); |
645 | } |
646 | goto out; /* Let the driver continue without LEDs */ |
647 | } |
648 | } |
649 | } |
650 | out: |
651 | #endif |
652 | hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n"); |
653 | return 0; |
654 | } |
655 | |
656 | |
657 | |
658 | int lg4ff_deinit(struct hid_device *hid) |
659 | { |
660 | struct lg4ff_device_entry *entry; |
661 | struct lg_drv_data *drv_data; |
662 | |
663 | device_remove_file(&hid->dev, &dev_attr_range); |
664 | |
665 | drv_data = hid_get_drvdata(hid); |
666 | if (!drv_data) { |
667 | hid_err(hid, "Error while deinitializing device, no private driver data.\n"); |
668 | return -1; |
669 | } |
670 | entry = drv_data->device_props; |
671 | if (!entry) { |
672 | hid_err(hid, "Error while deinitializing device, no device properties data.\n"); |
673 | return -1; |
674 | } |
675 | |
676 | #ifdef CONFIG_LEDS_CLASS |
677 | { |
678 | int j; |
679 | struct led_classdev *led; |
680 | |
681 | /* Deregister LEDs (if any) */ |
682 | for (j = 0; j < 5; j++) { |
683 | |
684 | led = entry->led[j]; |
685 | entry->led[j] = NULL; |
686 | if (!led) |
687 | continue; |
688 | led_classdev_unregister(led); |
689 | kfree(led); |
690 | } |
691 | } |
692 | #endif |
693 | |
694 | /* Deallocate memory */ |
695 | kfree(entry); |
696 | |
697 | dbg_hid("Device successfully unregistered\n"); |
698 | return 0; |
699 | } |
700 |
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v2.6.34-rc5
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