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 { |
2b24a960 | 56 | __u32 product_id; |
30bb75d7 MM |
57 | __u16 range; |
58 | __u16 min_range; | |
59 | __u16 max_range; | |
22bcefdc SW |
60 | #ifdef CONFIG_LEDS_CLASS |
61 | __u8 led_state; | |
62 | struct led_classdev *led[5]; | |
63 | #endif | |
30bb75d7 MM |
64 | struct list_head list; |
65 | void (*set_range)(struct hid_device *hid, u16 range); | |
66 | }; | |
67 | ||
7362cd22 | 68 | static const signed short lg4ff_wheel_effects[] = { |
32c88cbc SW |
69 | FF_CONSTANT, |
70 | FF_AUTOCENTER, | |
71 | -1 | |
72 | }; | |
73 | ||
7362cd22 MM |
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; | |
30bb75d7 | 79 | void (*set_range)(struct hid_device *hid, u16 range); |
7362cd22 MM |
80 | }; |
81 | ||
82 | static const struct lg4ff_wheel lg4ff_devices[] = { | |
30bb75d7 MM |
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} | |
7362cd22 MM |
91 | }; |
92 | ||
96440c8a MM |
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 | ||
2b24a960 MM |
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 | ||
30bb75d7 | 183 | static int hid_lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
32c88cbc SW |
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); | |
74479ba8 | 188 | __s32 *value = report->field[0]->value; |
32c88cbc SW |
189 | int x; |
190 | ||
a80fe5d6 | 191 | #define CLAMP(x) do { if (x < 0) x = 0; else if (x > 0xff) x = 0xff; } while (0) |
32c88cbc SW |
192 | |
193 | switch (effect->type) { | |
194 | case FF_CONSTANT: | |
195 | x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ | |
196 | CLAMP(x); | |
74479ba8 MM |
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; | |
32c88cbc SW |
204 | |
205 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
206 | break; | |
207 | } | |
208 | return 0; | |
209 | } | |
210 | ||
6e2de8e0 MM |
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) | |
32c88cbc SW |
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); | |
74479ba8 | 218 | __s32 *value = report->field[0]->value; |
32c88cbc | 219 | |
74479ba8 MM |
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; | |
32c88cbc SW |
227 | |
228 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
229 | } | |
230 | ||
6e2de8e0 MM |
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); | |
74479ba8 | 237 | __s32 *value = report->field[0]->value; |
6e2de8e0 | 238 | magnitude = magnitude * 90 / 65535; |
6e2de8e0 | 239 | |
74479ba8 MM |
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; | |
6e2de8e0 MM |
247 | |
248 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
249 | } | |
250 | ||
30bb75d7 MM |
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); | |
74479ba8 MM |
256 | __s32 *value = report->field[0]->value; |
257 | ||
30bb75d7 MM |
258 | dbg_hid("G25/G27/DFGT: setting range to %u\n", range); |
259 | ||
74479ba8 MM |
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; | |
30bb75d7 MM |
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; | |
74479ba8 MM |
277 | __s32 *value = report->field[0]->value; |
278 | ||
30bb75d7 MM |
279 | dbg_hid("Driving Force Pro: setting range to %u\n", range); |
280 | ||
281 | /* Prepare "coarse" limit command */ | |
74479ba8 | 282 | value[0] = 0xf8; |
a80fe5d6 | 283 | value[1] = 0x00; /* Set later */ |
74479ba8 MM |
284 | value[2] = 0x00; |
285 | value[3] = 0x00; | |
286 | value[4] = 0x00; | |
287 | value[5] = 0x00; | |
288 | value[6] = 0x00; | |
30bb75d7 MM |
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 */ | |
74479ba8 MM |
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; | |
30bb75d7 MM |
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 | ||
74479ba8 MM |
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; | |
30bb75d7 MM |
322 | |
323 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
324 | } | |
325 | ||
96440c8a MM |
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 | } | |
32c88cbc | 340 | |
30bb75d7 MM |
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 | { | |
30bb75d7 | 344 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
345 | struct lg4ff_device_entry *entry; |
346 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
347 | size_t count; |
348 | ||
3b6b17b7 MM |
349 | drv_data = hid_get_drvdata(hid); |
350 | if (!drv_data) { | |
351 | hid_err(hid, "Private driver data not found!\n"); | |
352 | return 0; | |
30bb75d7 | 353 | } |
3b6b17b7 MM |
354 | |
355 | entry = drv_data->device_props; | |
356 | if (!entry) { | |
357 | hid_err(hid, "Device properties not found!\n"); | |
30bb75d7 MM |
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 | { | |
30bb75d7 | 369 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
370 | struct lg4ff_device_entry *entry; |
371 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
372 | __u16 range = simple_strtoul(buf, NULL, 10); |
373 | ||
3b6b17b7 MM |
374 | drv_data = hid_get_drvdata(hid); |
375 | if (!drv_data) { | |
376 | hid_err(hid, "Private driver data not found!\n"); | |
377 | return 0; | |
30bb75d7 | 378 | } |
3b6b17b7 MM |
379 | |
380 | entry = drv_data->device_props; | |
381 | if (!entry) { | |
382 | hid_err(hid, "Device properties not found!\n"); | |
383 | return 0; | |
30bb75d7 MM |
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 | ||
22bcefdc SW |
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); | |
74479ba8 MM |
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; | |
22bcefdc SW |
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); | |
4629fd16 | 421 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
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); | |
4629fd16 | 456 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
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 | ||
32c88cbc SW |
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; | |
30bb75d7 | 489 | struct lg4ff_device_entry *entry; |
3b6b17b7 | 490 | struct lg_drv_data *drv_data; |
30bb75d7 | 491 | struct usb_device_descriptor *udesc; |
7362cd22 | 492 | int error, i, j; |
96440c8a | 493 | __u16 bcdDevice, rev_maj, rev_min; |
32c88cbc SW |
494 | |
495 | /* Find the report to use */ | |
496 | if (list_empty(report_list)) { | |
4291ee30 | 497 | hid_err(hid, "No output report found\n"); |
32c88cbc SW |
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) { | |
4291ee30 | 504 | hid_err(hid, "NULL output report\n"); |
32c88cbc SW |
505 | return -1; |
506 | } | |
507 | ||
508 | field = report->field[0]; | |
509 | if (!field) { | |
4291ee30 | 510 | hid_err(hid, "NULL field\n"); |
32c88cbc SW |
511 | return -1; |
512 | } | |
30bb75d7 | 513 | |
7362cd22 MM |
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 | } | |
32c88cbc | 527 | |
96440c8a MM |
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 | ||
7362cd22 MM |
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); | |
32c88cbc SW |
553 | |
554 | error = input_ff_create_memless(dev, NULL, hid_lg4ff_play); | |
555 | ||
556 | if (error) | |
557 | return error; | |
558 | ||
6e2de8e0 MM |
559 | /* Check if autocentering is available and |
560 | * set the centering force to zero by default */ | |
561 | if (test_bit(FF_AUTOCENTER, dev->ffbit)) { | |
74479ba8 | 562 | if (rev_maj == FFEX_REV_MAJ && rev_min == FFEX_REV_MIN) /* Formula Force EX expects different autocentering command */ |
6e2de8e0 MM |
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 | } | |
32c88cbc | 569 | |
3b6b17b7 MM |
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; | |
30bb75d7 MM |
575 | } |
576 | ||
3b6b17b7 | 577 | /* Initialize device properties */ |
8383c6bf | 578 | entry = kzalloc(sizeof(struct lg4ff_device_entry), GFP_KERNEL); |
30bb75d7 | 579 | if (!entry) { |
3b6b17b7 | 580 | hid_err(hid, "Cannot add device, insufficient memory to allocate device properties.\n"); |
30bb75d7 MM |
581 | return -ENOMEM; |
582 | } | |
3b6b17b7 MM |
583 | drv_data->device_props = entry; |
584 | ||
2b24a960 | 585 | entry->product_id = lg4ff_devices[i].product_id; |
30bb75d7 MM |
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; | |
30bb75d7 MM |
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 | ||
22bcefdc SW |
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 | } | |
22bcefdc | 650 | out: |
c6e6dc87 | 651 | #endif |
64013800 | 652 | hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n"); |
32c88cbc SW |
653 | return 0; |
654 | } | |
655 | ||
2b24a960 MM |
656 | |
657 | ||
30bb75d7 MM |
658 | int lg4ff_deinit(struct hid_device *hid) |
659 | { | |
30bb75d7 | 660 | struct lg4ff_device_entry *entry; |
3b6b17b7 MM |
661 | struct lg_drv_data *drv_data; |
662 | ||
6a2e176b MM |
663 | device_remove_file(&hid->dev, &dev_attr_range); |
664 | ||
3b6b17b7 MM |
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; | |
30bb75d7 | 669 | } |
3b6b17b7 MM |
670 | entry = drv_data->device_props; |
671 | if (!entry) { | |
672 | hid_err(hid, "Error while deinitializing device, no device properties data.\n"); | |
30bb75d7 MM |
673 | return -1; |
674 | } | |
22bcefdc SW |
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 | ||
3b6b17b7 MM |
694 | /* Deallocate memory */ |
695 | kfree(entry); | |
30bb75d7 | 696 | |
30bb75d7 MM |
697 | dbg_hid("Device successfully unregistered\n"); |
698 | return 0; | |
699 | } |