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" | |
7362cd22 | 33 | #include "hid-ids.h" |
32c88cbc | 34 | |
96440c8a MM |
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 | ||
30bb75d7 MM |
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 | ||
30bb75d7 | 55 | struct lg4ff_device_entry { |
30bb75d7 MM |
56 | __u16 range; |
57 | __u16 min_range; | |
58 | __u16 max_range; | |
22bcefdc SW |
59 | #ifdef CONFIG_LEDS_CLASS |
60 | __u8 led_state; | |
61 | struct led_classdev *led[5]; | |
62 | #endif | |
30bb75d7 MM |
63 | struct list_head list; |
64 | void (*set_range)(struct hid_device *hid, u16 range); | |
65 | }; | |
66 | ||
7362cd22 | 67 | static const signed short lg4ff_wheel_effects[] = { |
32c88cbc SW |
68 | FF_CONSTANT, |
69 | FF_AUTOCENTER, | |
70 | -1 | |
71 | }; | |
72 | ||
7362cd22 MM |
73 | struct lg4ff_wheel { |
74 | const __u32 product_id; | |
75 | const signed short *ff_effects; | |
76 | const __u16 min_range; | |
77 | const __u16 max_range; | |
30bb75d7 | 78 | void (*set_range)(struct hid_device *hid, u16 range); |
7362cd22 MM |
79 | }; |
80 | ||
81 | static const struct lg4ff_wheel lg4ff_devices[] = { | |
30bb75d7 MM |
82 | {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
83 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, | |
84 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_dfp}, | |
85 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, | |
86 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, | |
87 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, | |
88 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270, NULL}, | |
89 | {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} | |
7362cd22 MM |
90 | }; |
91 | ||
96440c8a MM |
92 | struct lg4ff_native_cmd { |
93 | const __u8 cmd_num; /* Number of commands to send */ | |
94 | const __u8 cmd[]; | |
95 | }; | |
96 | ||
97 | struct lg4ff_usb_revision { | |
98 | const __u16 rev_maj; | |
99 | const __u16 rev_min; | |
100 | const struct lg4ff_native_cmd *command; | |
101 | }; | |
102 | ||
103 | static const struct lg4ff_native_cmd native_dfp = { | |
104 | 1, | |
105 | {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} | |
106 | }; | |
107 | ||
108 | static const struct lg4ff_native_cmd native_dfgt = { | |
109 | 2, | |
110 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ | |
111 | 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ | |
112 | }; | |
113 | ||
114 | static const struct lg4ff_native_cmd native_g25 = { | |
115 | 1, | |
116 | {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} | |
117 | }; | |
118 | ||
119 | static const struct lg4ff_native_cmd native_g27 = { | |
120 | 2, | |
121 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ | |
122 | 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ | |
123 | }; | |
124 | ||
125 | static const struct lg4ff_usb_revision lg4ff_revs[] = { | |
126 | {DFGT_REV_MAJ, DFGT_REV_MIN, &native_dfgt}, /* Driving Force GT */ | |
127 | {DFP_REV_MAJ, DFP_REV_MIN, &native_dfp}, /* Driving Force Pro */ | |
128 | {G25_REV_MAJ, G25_REV_MIN, &native_g25}, /* G25 */ | |
129 | {G27_REV_MAJ, G27_REV_MIN, &native_g27}, /* G27 */ | |
130 | }; | |
131 | ||
30bb75d7 | 132 | static int hid_lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
32c88cbc SW |
133 | { |
134 | struct hid_device *hid = input_get_drvdata(dev); | |
135 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
136 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 | 137 | __s32 *value = report->field[0]->value; |
32c88cbc SW |
138 | int x; |
139 | ||
140 | #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff | |
141 | ||
142 | switch (effect->type) { | |
143 | case FF_CONSTANT: | |
144 | x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ | |
145 | CLAMP(x); | |
74479ba8 MM |
146 | value[0] = 0x11; /* Slot 1 */ |
147 | value[1] = 0x08; | |
148 | value[2] = x; | |
149 | value[3] = 0x80; | |
150 | value[4] = 0x00; | |
151 | value[5] = 0x00; | |
152 | value[6] = 0x00; | |
32c88cbc SW |
153 | |
154 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
155 | break; | |
156 | } | |
157 | return 0; | |
158 | } | |
159 | ||
6e2de8e0 MM |
160 | /* Sends default autocentering command compatible with |
161 | * all wheels except Formula Force EX */ | |
162 | static void hid_lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude) | |
32c88cbc SW |
163 | { |
164 | struct hid_device *hid = input_get_drvdata(dev); | |
165 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
166 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 | 167 | __s32 *value = report->field[0]->value; |
32c88cbc | 168 | |
74479ba8 MM |
169 | value[0] = 0xfe; |
170 | value[1] = 0x0d; | |
171 | value[2] = magnitude >> 13; | |
172 | value[3] = magnitude >> 13; | |
173 | value[4] = magnitude >> 8; | |
174 | value[5] = 0x00; | |
175 | value[6] = 0x00; | |
32c88cbc SW |
176 | |
177 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
178 | } | |
179 | ||
6e2de8e0 MM |
180 | /* Sends autocentering command compatible with Formula Force EX */ |
181 | static void hid_lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude) | |
182 | { | |
183 | struct hid_device *hid = input_get_drvdata(dev); | |
184 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
185 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 | 186 | __s32 *value = report->field[0]->value; |
6e2de8e0 | 187 | magnitude = magnitude * 90 / 65535; |
6e2de8e0 | 188 | |
74479ba8 MM |
189 | value[0] = 0xfe; |
190 | value[1] = 0x03; | |
191 | value[2] = magnitude >> 14; | |
192 | value[3] = magnitude >> 14; | |
193 | value[4] = magnitude; | |
194 | value[5] = 0x00; | |
195 | value[6] = 0x00; | |
6e2de8e0 MM |
196 | |
197 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
198 | } | |
199 | ||
30bb75d7 MM |
200 | /* Sends command to set range compatible with G25/G27/Driving Force GT */ |
201 | static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range) | |
202 | { | |
203 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
204 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 MM |
205 | __s32 *value = report->field[0]->value; |
206 | ||
30bb75d7 MM |
207 | dbg_hid("G25/G27/DFGT: setting range to %u\n", range); |
208 | ||
74479ba8 MM |
209 | value[0] = 0xf8; |
210 | value[1] = 0x81; | |
211 | value[2] = range & 0x00ff; | |
212 | value[3] = (range & 0xff00) >> 8; | |
213 | value[4] = 0x00; | |
214 | value[5] = 0x00; | |
215 | value[6] = 0x00; | |
30bb75d7 MM |
216 | |
217 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
218 | } | |
219 | ||
220 | /* Sends commands to set range compatible with Driving Force Pro wheel */ | |
221 | static void hid_lg4ff_set_range_dfp(struct hid_device *hid, __u16 range) | |
222 | { | |
223 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
224 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
225 | int start_left, start_right, full_range; | |
74479ba8 MM |
226 | __s32 *value = report->field[0]->value; |
227 | ||
30bb75d7 MM |
228 | dbg_hid("Driving Force Pro: setting range to %u\n", range); |
229 | ||
230 | /* Prepare "coarse" limit command */ | |
74479ba8 MM |
231 | value[0] = 0xf8; |
232 | value[1] = 0x00; /* Set later */ | |
233 | value[2] = 0x00; | |
234 | value[3] = 0x00; | |
235 | value[4] = 0x00; | |
236 | value[5] = 0x00; | |
237 | value[6] = 0x00; | |
30bb75d7 MM |
238 | |
239 | if (range > 200) { | |
240 | report->field[0]->value[1] = 0x03; | |
241 | full_range = 900; | |
242 | } else { | |
243 | report->field[0]->value[1] = 0x02; | |
244 | full_range = 200; | |
245 | } | |
246 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
247 | ||
248 | /* Prepare "fine" limit command */ | |
74479ba8 MM |
249 | value[0] = 0x81; |
250 | value[1] = 0x0b; | |
251 | value[2] = 0x00; | |
252 | value[3] = 0x00; | |
253 | value[4] = 0x00; | |
254 | value[5] = 0x00; | |
255 | value[6] = 0x00; | |
30bb75d7 MM |
256 | |
257 | if (range == 200 || range == 900) { /* Do not apply any fine limit */ | |
258 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
259 | return; | |
260 | } | |
261 | ||
262 | /* Construct fine limit command */ | |
263 | start_left = (((full_range - range + 1) * 2047) / full_range); | |
264 | start_right = 0xfff - start_left; | |
265 | ||
74479ba8 MM |
266 | value[2] = start_left >> 4; |
267 | value[3] = start_right >> 4; | |
268 | value[4] = 0xff; | |
269 | value[5] = (start_right & 0xe) << 4 | (start_left & 0xe); | |
270 | value[6] = 0xff; | |
30bb75d7 MM |
271 | |
272 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
273 | } | |
274 | ||
96440c8a MM |
275 | static void hid_lg4ff_switch_native(struct hid_device *hid, const struct lg4ff_native_cmd *cmd) |
276 | { | |
277 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
278 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
279 | __u8 i, j; | |
280 | ||
281 | j = 0; | |
282 | while (j < 7*cmd->cmd_num) { | |
283 | for (i = 0; i < 7; i++) | |
284 | report->field[0]->value[i] = cmd->cmd[j++]; | |
285 | ||
286 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
287 | } | |
288 | } | |
32c88cbc | 289 | |
30bb75d7 MM |
290 | /* Read current range and display it in terminal */ |
291 | static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, char *buf) | |
292 | { | |
30bb75d7 | 293 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
294 | struct lg4ff_device_entry *entry; |
295 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
296 | size_t count; |
297 | ||
3b6b17b7 MM |
298 | drv_data = hid_get_drvdata(hid); |
299 | if (!drv_data) { | |
300 | hid_err(hid, "Private driver data not found!\n"); | |
301 | return 0; | |
30bb75d7 | 302 | } |
3b6b17b7 MM |
303 | |
304 | entry = drv_data->device_props; | |
305 | if (!entry) { | |
306 | hid_err(hid, "Device properties not found!\n"); | |
30bb75d7 MM |
307 | return 0; |
308 | } | |
309 | ||
310 | count = scnprintf(buf, PAGE_SIZE, "%u\n", entry->range); | |
311 | return count; | |
312 | } | |
313 | ||
314 | /* Set range to user specified value, call appropriate function | |
315 | * according to the type of the wheel */ | |
316 | static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) | |
317 | { | |
30bb75d7 | 318 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
319 | struct lg4ff_device_entry *entry; |
320 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
321 | __u16 range = simple_strtoul(buf, NULL, 10); |
322 | ||
3b6b17b7 MM |
323 | drv_data = hid_get_drvdata(hid); |
324 | if (!drv_data) { | |
325 | hid_err(hid, "Private driver data not found!\n"); | |
326 | return 0; | |
30bb75d7 | 327 | } |
3b6b17b7 MM |
328 | |
329 | entry = drv_data->device_props; | |
330 | if (!entry) { | |
331 | hid_err(hid, "Device properties not found!\n"); | |
332 | return 0; | |
30bb75d7 MM |
333 | } |
334 | ||
335 | if (range == 0) | |
336 | range = entry->max_range; | |
337 | ||
338 | /* Check if the wheel supports range setting | |
339 | * and that the range is within limits for the wheel */ | |
340 | if (entry->set_range != NULL && range >= entry->min_range && range <= entry->max_range) { | |
341 | entry->set_range(hid, range); | |
342 | entry->range = range; | |
343 | } | |
344 | ||
345 | return count; | |
346 | } | |
347 | ||
22bcefdc SW |
348 | #ifdef CONFIG_LEDS_CLASS |
349 | static void lg4ff_set_leds(struct hid_device *hid, __u8 leds) | |
350 | { | |
351 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
352 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 MM |
353 | __s32 *value = report->field[0]->value; |
354 | ||
355 | value[0] = 0xf8; | |
356 | value[1] = 0x12; | |
357 | value[2] = leds; | |
358 | value[3] = 0x00; | |
359 | value[4] = 0x00; | |
360 | value[5] = 0x00; | |
361 | value[6] = 0x00; | |
22bcefdc SW |
362 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
363 | } | |
364 | ||
365 | static void lg4ff_led_set_brightness(struct led_classdev *led_cdev, | |
366 | enum led_brightness value) | |
367 | { | |
368 | struct device *dev = led_cdev->dev->parent; | |
369 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
370 | struct lg_drv_data *drv_data = (struct lg_drv_data *)hid_get_drvdata(hid); | |
371 | struct lg4ff_device_entry *entry; | |
372 | int i, state = 0; | |
373 | ||
374 | if (!drv_data) { | |
375 | hid_err(hid, "Device data not found."); | |
376 | return; | |
377 | } | |
378 | ||
379 | entry = (struct lg4ff_device_entry *)drv_data->device_props; | |
380 | ||
381 | if (!entry) { | |
382 | hid_err(hid, "Device properties not found."); | |
383 | return; | |
384 | } | |
385 | ||
386 | for (i = 0; i < 5; i++) { | |
387 | if (led_cdev != entry->led[i]) | |
388 | continue; | |
389 | state = (entry->led_state >> i) & 1; | |
390 | if (value == LED_OFF && state) { | |
391 | entry->led_state &= ~(1 << i); | |
392 | lg4ff_set_leds(hid, entry->led_state); | |
393 | } else if (value != LED_OFF && !state) { | |
394 | entry->led_state |= 1 << i; | |
395 | lg4ff_set_leds(hid, entry->led_state); | |
396 | } | |
397 | break; | |
398 | } | |
399 | } | |
400 | ||
401 | static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev) | |
402 | { | |
403 | struct device *dev = led_cdev->dev->parent; | |
404 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
405 | struct lg_drv_data *drv_data = (struct lg_drv_data *)hid_get_drvdata(hid); | |
406 | struct lg4ff_device_entry *entry; | |
407 | int i, value = 0; | |
408 | ||
409 | if (!drv_data) { | |
410 | hid_err(hid, "Device data not found."); | |
411 | return LED_OFF; | |
412 | } | |
413 | ||
414 | entry = (struct lg4ff_device_entry *)drv_data->device_props; | |
415 | ||
416 | if (!entry) { | |
417 | hid_err(hid, "Device properties not found."); | |
418 | return LED_OFF; | |
419 | } | |
420 | ||
421 | for (i = 0; i < 5; i++) | |
422 | if (led_cdev == entry->led[i]) { | |
423 | value = (entry->led_state >> i) & 1; | |
424 | break; | |
425 | } | |
426 | ||
427 | return value ? LED_FULL : LED_OFF; | |
428 | } | |
429 | #endif | |
430 | ||
32c88cbc SW |
431 | int lg4ff_init(struct hid_device *hid) |
432 | { | |
433 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); | |
434 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
435 | struct input_dev *dev = hidinput->input; | |
436 | struct hid_report *report; | |
437 | struct hid_field *field; | |
30bb75d7 | 438 | struct lg4ff_device_entry *entry; |
3b6b17b7 | 439 | struct lg_drv_data *drv_data; |
30bb75d7 | 440 | struct usb_device_descriptor *udesc; |
7362cd22 | 441 | int error, i, j; |
96440c8a | 442 | __u16 bcdDevice, rev_maj, rev_min; |
32c88cbc SW |
443 | |
444 | /* Find the report to use */ | |
445 | if (list_empty(report_list)) { | |
4291ee30 | 446 | hid_err(hid, "No output report found\n"); |
32c88cbc SW |
447 | return -1; |
448 | } | |
449 | ||
450 | /* Check that the report looks ok */ | |
451 | report = list_entry(report_list->next, struct hid_report, list); | |
452 | if (!report) { | |
4291ee30 | 453 | hid_err(hid, "NULL output report\n"); |
32c88cbc SW |
454 | return -1; |
455 | } | |
456 | ||
457 | field = report->field[0]; | |
458 | if (!field) { | |
4291ee30 | 459 | hid_err(hid, "NULL field\n"); |
32c88cbc SW |
460 | return -1; |
461 | } | |
30bb75d7 | 462 | |
7362cd22 MM |
463 | /* Check what wheel has been connected */ |
464 | for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { | |
465 | if (hid->product == lg4ff_devices[i].product_id) { | |
466 | dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id); | |
467 | break; | |
468 | } | |
469 | } | |
470 | ||
471 | if (i == ARRAY_SIZE(lg4ff_devices)) { | |
472 | hid_err(hid, "Device is not supported by lg4ff driver. If you think it should be, consider reporting a bug to" | |
473 | "LKML, Simon Wood <simon@mungewell.org> or Michal Maly <madcatxster@gmail.com>\n"); | |
474 | return -1; | |
475 | } | |
32c88cbc | 476 | |
96440c8a MM |
477 | /* Attempt to switch wheel to native mode when applicable */ |
478 | udesc = &(hid_to_usb_dev(hid)->descriptor); | |
479 | if (!udesc) { | |
480 | hid_err(hid, "NULL USB device descriptor\n"); | |
481 | return -1; | |
482 | } | |
483 | bcdDevice = le16_to_cpu(udesc->bcdDevice); | |
484 | rev_maj = bcdDevice >> 8; | |
485 | rev_min = bcdDevice & 0xff; | |
486 | ||
487 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_WHEEL) { | |
488 | dbg_hid("Generic wheel detected, can it do native?\n"); | |
489 | dbg_hid("USB revision: %2x.%02x\n", rev_maj, rev_min); | |
490 | ||
491 | for (j = 0; j < ARRAY_SIZE(lg4ff_revs); j++) { | |
492 | if (lg4ff_revs[j].rev_maj == rev_maj && lg4ff_revs[j].rev_min == rev_min) { | |
493 | hid_lg4ff_switch_native(hid, lg4ff_revs[j].command); | |
494 | hid_info(hid, "Switched to native mode\n"); | |
495 | } | |
496 | } | |
497 | } | |
498 | ||
7362cd22 MM |
499 | /* Set supported force feedback capabilities */ |
500 | for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) | |
501 | set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); | |
32c88cbc SW |
502 | |
503 | error = input_ff_create_memless(dev, NULL, hid_lg4ff_play); | |
504 | ||
505 | if (error) | |
506 | return error; | |
507 | ||
6e2de8e0 MM |
508 | /* Check if autocentering is available and |
509 | * set the centering force to zero by default */ | |
510 | if (test_bit(FF_AUTOCENTER, dev->ffbit)) { | |
74479ba8 | 511 | if (rev_maj == FFEX_REV_MAJ && rev_min == FFEX_REV_MIN) /* Formula Force EX expects different autocentering command */ |
6e2de8e0 MM |
512 | dev->ff->set_autocenter = hid_lg4ff_set_autocenter_ffex; |
513 | else | |
514 | dev->ff->set_autocenter = hid_lg4ff_set_autocenter_default; | |
515 | ||
516 | dev->ff->set_autocenter(dev, 0); | |
517 | } | |
32c88cbc | 518 | |
3b6b17b7 MM |
519 | /* Get private driver data */ |
520 | drv_data = hid_get_drvdata(hid); | |
521 | if (!drv_data) { | |
522 | hid_err(hid, "Cannot add device, private driver data not allocated\n"); | |
523 | return -1; | |
30bb75d7 MM |
524 | } |
525 | ||
3b6b17b7 | 526 | /* Initialize device properties */ |
8383c6bf | 527 | entry = kzalloc(sizeof(struct lg4ff_device_entry), GFP_KERNEL); |
30bb75d7 | 528 | if (!entry) { |
3b6b17b7 | 529 | hid_err(hid, "Cannot add device, insufficient memory to allocate device properties.\n"); |
30bb75d7 MM |
530 | return -ENOMEM; |
531 | } | |
3b6b17b7 MM |
532 | drv_data->device_props = entry; |
533 | ||
30bb75d7 MM |
534 | entry->min_range = lg4ff_devices[i].min_range; |
535 | entry->max_range = lg4ff_devices[i].max_range; | |
536 | entry->set_range = lg4ff_devices[i].set_range; | |
30bb75d7 MM |
537 | |
538 | /* Create sysfs interface */ | |
539 | error = device_create_file(&hid->dev, &dev_attr_range); | |
540 | if (error) | |
541 | return error; | |
542 | dbg_hid("sysfs interface created\n"); | |
543 | ||
544 | /* Set the maximum range to start with */ | |
545 | entry->range = entry->max_range; | |
546 | if (entry->set_range != NULL) | |
547 | entry->set_range(hid, entry->range); | |
548 | ||
22bcefdc SW |
549 | #ifdef CONFIG_LEDS_CLASS |
550 | /* register led subsystem - G27 only */ | |
551 | entry->led_state = 0; | |
552 | for (j = 0; j < 5; j++) | |
553 | entry->led[j] = NULL; | |
554 | ||
555 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G27_WHEEL) { | |
556 | struct led_classdev *led; | |
557 | size_t name_sz; | |
558 | char *name; | |
559 | ||
560 | lg4ff_set_leds(hid, 0); | |
561 | ||
562 | name_sz = strlen(dev_name(&hid->dev)) + 8; | |
563 | ||
564 | for (j = 0; j < 5; j++) { | |
565 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); | |
566 | if (!led) { | |
567 | hid_err(hid, "can't allocate memory for LED %d\n", j); | |
568 | goto err; | |
569 | } | |
570 | ||
571 | name = (void *)(&led[1]); | |
572 | snprintf(name, name_sz, "%s::RPM%d", dev_name(&hid->dev), j+1); | |
573 | led->name = name; | |
574 | led->brightness = 0; | |
575 | led->max_brightness = 1; | |
576 | led->brightness_get = lg4ff_led_get_brightness; | |
577 | led->brightness_set = lg4ff_led_set_brightness; | |
578 | ||
579 | entry->led[j] = led; | |
580 | error = led_classdev_register(&hid->dev, led); | |
581 | ||
582 | if (error) { | |
583 | hid_err(hid, "failed to register LED %d. Aborting.\n", j); | |
584 | err: | |
585 | /* Deregister LEDs (if any) */ | |
586 | for (j = 0; j < 5; j++) { | |
587 | led = entry->led[j]; | |
588 | entry->led[j] = NULL; | |
589 | if (!led) | |
590 | continue; | |
591 | led_classdev_unregister(led); | |
592 | kfree(led); | |
593 | } | |
594 | goto out; /* Let the driver continue without LEDs */ | |
595 | } | |
596 | } | |
597 | } | |
22bcefdc | 598 | out: |
c6e6dc87 | 599 | #endif |
64013800 | 600 | hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n"); |
32c88cbc SW |
601 | return 0; |
602 | } | |
603 | ||
30bb75d7 MM |
604 | int lg4ff_deinit(struct hid_device *hid) |
605 | { | |
30bb75d7 | 606 | struct lg4ff_device_entry *entry; |
3b6b17b7 MM |
607 | struct lg_drv_data *drv_data; |
608 | ||
6a2e176b MM |
609 | device_remove_file(&hid->dev, &dev_attr_range); |
610 | ||
3b6b17b7 MM |
611 | drv_data = hid_get_drvdata(hid); |
612 | if (!drv_data) { | |
613 | hid_err(hid, "Error while deinitializing device, no private driver data.\n"); | |
614 | return -1; | |
30bb75d7 | 615 | } |
3b6b17b7 MM |
616 | entry = drv_data->device_props; |
617 | if (!entry) { | |
618 | hid_err(hid, "Error while deinitializing device, no device properties data.\n"); | |
30bb75d7 MM |
619 | return -1; |
620 | } | |
22bcefdc SW |
621 | |
622 | #ifdef CONFIG_LEDS_CLASS | |
623 | { | |
624 | int j; | |
625 | struct led_classdev *led; | |
626 | ||
627 | /* Deregister LEDs (if any) */ | |
628 | for (j = 0; j < 5; j++) { | |
629 | ||
630 | led = entry->led[j]; | |
631 | entry->led[j] = NULL; | |
632 | if (!led) | |
633 | continue; | |
634 | led_classdev_unregister(led); | |
635 | kfree(led); | |
636 | } | |
637 | } | |
638 | #endif | |
639 | ||
3b6b17b7 MM |
640 | /* Deallocate memory */ |
641 | kfree(entry); | |
30bb75d7 | 642 | |
30bb75d7 MM |
643 | dbg_hid("Device successfully unregistered\n"); |
644 | return 0; | |
645 | } |