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 | ||
a2063172 MM |
46 | #define DFP_X_MIN 0 |
47 | #define DFP_X_MAX 16383 | |
48 | #define DFP_PEDAL_MIN 0 | |
49 | #define DFP_PEDAL_MAX 255 | |
50 | ||
30bb75d7 MM |
51 | #define to_hid_device(pdev) container_of(pdev, struct hid_device, dev) |
52 | ||
53 | static void hid_lg4ff_set_range_dfp(struct hid_device *hid, u16 range); | |
54 | static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range); | |
55 | static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, char *buf); | |
56 | static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); | |
57 | ||
58 | static DEVICE_ATTR(range, S_IRWXU | S_IRWXG | S_IRWXO, lg4ff_range_show, lg4ff_range_store); | |
59 | ||
30bb75d7 | 60 | struct lg4ff_device_entry { |
2b24a960 | 61 | __u32 product_id; |
30bb75d7 MM |
62 | __u16 range; |
63 | __u16 min_range; | |
64 | __u16 max_range; | |
22bcefdc SW |
65 | #ifdef CONFIG_LEDS_CLASS |
66 | __u8 led_state; | |
67 | struct led_classdev *led[5]; | |
68 | #endif | |
30bb75d7 MM |
69 | struct list_head list; |
70 | void (*set_range)(struct hid_device *hid, u16 range); | |
71 | }; | |
72 | ||
7362cd22 | 73 | static const signed short lg4ff_wheel_effects[] = { |
32c88cbc SW |
74 | FF_CONSTANT, |
75 | FF_AUTOCENTER, | |
76 | -1 | |
77 | }; | |
78 | ||
7362cd22 MM |
79 | struct lg4ff_wheel { |
80 | const __u32 product_id; | |
81 | const signed short *ff_effects; | |
82 | const __u16 min_range; | |
83 | const __u16 max_range; | |
30bb75d7 | 84 | void (*set_range)(struct hid_device *hid, u16 range); |
7362cd22 MM |
85 | }; |
86 | ||
87 | static const struct lg4ff_wheel lg4ff_devices[] = { | |
30bb75d7 MM |
88 | {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
89 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, | |
90 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_dfp}, | |
91 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, | |
92 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, | |
93 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, | |
94 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270, NULL}, | |
95 | {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} | |
7362cd22 MM |
96 | }; |
97 | ||
96440c8a MM |
98 | struct lg4ff_native_cmd { |
99 | const __u8 cmd_num; /* Number of commands to send */ | |
100 | const __u8 cmd[]; | |
101 | }; | |
102 | ||
103 | struct lg4ff_usb_revision { | |
104 | const __u16 rev_maj; | |
105 | const __u16 rev_min; | |
106 | const struct lg4ff_native_cmd *command; | |
107 | }; | |
108 | ||
109 | static const struct lg4ff_native_cmd native_dfp = { | |
110 | 1, | |
111 | {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} | |
112 | }; | |
113 | ||
114 | static const struct lg4ff_native_cmd native_dfgt = { | |
115 | 2, | |
116 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ | |
117 | 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ | |
118 | }; | |
119 | ||
120 | static const struct lg4ff_native_cmd native_g25 = { | |
121 | 1, | |
122 | {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} | |
123 | }; | |
124 | ||
125 | static const struct lg4ff_native_cmd native_g27 = { | |
126 | 2, | |
127 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ | |
128 | 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ | |
129 | }; | |
130 | ||
131 | static const struct lg4ff_usb_revision lg4ff_revs[] = { | |
132 | {DFGT_REV_MAJ, DFGT_REV_MIN, &native_dfgt}, /* Driving Force GT */ | |
133 | {DFP_REV_MAJ, DFP_REV_MIN, &native_dfp}, /* Driving Force Pro */ | |
134 | {G25_REV_MAJ, G25_REV_MIN, &native_g25}, /* G25 */ | |
135 | {G27_REV_MAJ, G27_REV_MIN, &native_g27}, /* G27 */ | |
136 | }; | |
137 | ||
2b24a960 MM |
138 | /* Recalculates X axis value accordingly to currently selected range */ |
139 | static __s32 lg4ff_adjust_dfp_x_axis(__s32 value, __u16 range) | |
140 | { | |
141 | __u16 max_range; | |
142 | __s32 new_value; | |
143 | ||
144 | if (range == 900) | |
145 | return value; | |
146 | else if (range == 200) | |
147 | return value; | |
148 | else if (range < 200) | |
149 | max_range = 200; | |
150 | else | |
151 | max_range = 900; | |
152 | ||
153 | new_value = 8192 + mult_frac(value - 8192, max_range, range); | |
154 | if (new_value < 0) | |
155 | return 0; | |
156 | else if (new_value > 16383) | |
157 | return 16383; | |
158 | else | |
159 | return new_value; | |
160 | } | |
161 | ||
162 | int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_field *field, | |
163 | struct hid_usage *usage, __s32 value, struct lg_drv_data *drv_data) | |
164 | { | |
165 | struct lg4ff_device_entry *entry = drv_data->device_props; | |
166 | __s32 new_value = 0; | |
167 | ||
168 | if (!entry) { | |
169 | hid_err(hid, "Device properties not found"); | |
170 | return 0; | |
171 | } | |
172 | ||
173 | switch (entry->product_id) { | |
174 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
175 | switch (usage->code) { | |
176 | case ABS_X: | |
177 | new_value = lg4ff_adjust_dfp_x_axis(value, entry->range); | |
178 | input_event(field->hidinput->input, usage->type, usage->code, new_value); | |
179 | return 1; | |
180 | default: | |
181 | return 0; | |
182 | } | |
183 | default: | |
184 | return 0; | |
185 | } | |
186 | } | |
187 | ||
30bb75d7 | 188 | static int hid_lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
32c88cbc SW |
189 | { |
190 | struct hid_device *hid = input_get_drvdata(dev); | |
191 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
192 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 | 193 | __s32 *value = report->field[0]->value; |
32c88cbc SW |
194 | int x; |
195 | ||
a80fe5d6 | 196 | #define CLAMP(x) do { if (x < 0) x = 0; else if (x > 0xff) x = 0xff; } while (0) |
32c88cbc SW |
197 | |
198 | switch (effect->type) { | |
199 | case FF_CONSTANT: | |
200 | x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ | |
201 | CLAMP(x); | |
74479ba8 MM |
202 | value[0] = 0x11; /* Slot 1 */ |
203 | value[1] = 0x08; | |
204 | value[2] = x; | |
205 | value[3] = 0x80; | |
206 | value[4] = 0x00; | |
207 | value[5] = 0x00; | |
208 | value[6] = 0x00; | |
32c88cbc SW |
209 | |
210 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
211 | break; | |
212 | } | |
213 | return 0; | |
214 | } | |
215 | ||
6e2de8e0 MM |
216 | /* Sends default autocentering command compatible with |
217 | * all wheels except Formula Force EX */ | |
218 | static void hid_lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude) | |
32c88cbc SW |
219 | { |
220 | struct hid_device *hid = input_get_drvdata(dev); | |
221 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
222 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 | 223 | __s32 *value = report->field[0]->value; |
32c88cbc | 224 | |
74479ba8 MM |
225 | value[0] = 0xfe; |
226 | value[1] = 0x0d; | |
227 | value[2] = magnitude >> 13; | |
228 | value[3] = magnitude >> 13; | |
229 | value[4] = magnitude >> 8; | |
230 | value[5] = 0x00; | |
231 | value[6] = 0x00; | |
32c88cbc SW |
232 | |
233 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
234 | } | |
235 | ||
6e2de8e0 MM |
236 | /* Sends autocentering command compatible with Formula Force EX */ |
237 | static void hid_lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude) | |
238 | { | |
239 | struct hid_device *hid = input_get_drvdata(dev); | |
240 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
241 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 | 242 | __s32 *value = report->field[0]->value; |
6e2de8e0 | 243 | magnitude = magnitude * 90 / 65535; |
6e2de8e0 | 244 | |
74479ba8 MM |
245 | value[0] = 0xfe; |
246 | value[1] = 0x03; | |
247 | value[2] = magnitude >> 14; | |
248 | value[3] = magnitude >> 14; | |
249 | value[4] = magnitude; | |
250 | value[5] = 0x00; | |
251 | value[6] = 0x00; | |
6e2de8e0 MM |
252 | |
253 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
254 | } | |
255 | ||
30bb75d7 MM |
256 | /* Sends command to set range compatible with G25/G27/Driving Force GT */ |
257 | static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range) | |
258 | { | |
259 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
260 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 MM |
261 | __s32 *value = report->field[0]->value; |
262 | ||
30bb75d7 MM |
263 | dbg_hid("G25/G27/DFGT: setting range to %u\n", range); |
264 | ||
74479ba8 MM |
265 | value[0] = 0xf8; |
266 | value[1] = 0x81; | |
267 | value[2] = range & 0x00ff; | |
268 | value[3] = (range & 0xff00) >> 8; | |
269 | value[4] = 0x00; | |
270 | value[5] = 0x00; | |
271 | value[6] = 0x00; | |
30bb75d7 MM |
272 | |
273 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
274 | } | |
275 | ||
276 | /* Sends commands to set range compatible with Driving Force Pro wheel */ | |
277 | static void hid_lg4ff_set_range_dfp(struct hid_device *hid, __u16 range) | |
278 | { | |
279 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
280 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
281 | int start_left, start_right, full_range; | |
74479ba8 MM |
282 | __s32 *value = report->field[0]->value; |
283 | ||
30bb75d7 MM |
284 | dbg_hid("Driving Force Pro: setting range to %u\n", range); |
285 | ||
286 | /* Prepare "coarse" limit command */ | |
74479ba8 | 287 | value[0] = 0xf8; |
a80fe5d6 | 288 | value[1] = 0x00; /* Set later */ |
74479ba8 MM |
289 | value[2] = 0x00; |
290 | value[3] = 0x00; | |
291 | value[4] = 0x00; | |
292 | value[5] = 0x00; | |
293 | value[6] = 0x00; | |
30bb75d7 MM |
294 | |
295 | if (range > 200) { | |
296 | report->field[0]->value[1] = 0x03; | |
297 | full_range = 900; | |
298 | } else { | |
299 | report->field[0]->value[1] = 0x02; | |
300 | full_range = 200; | |
301 | } | |
302 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
303 | ||
304 | /* Prepare "fine" limit command */ | |
74479ba8 MM |
305 | value[0] = 0x81; |
306 | value[1] = 0x0b; | |
307 | value[2] = 0x00; | |
308 | value[3] = 0x00; | |
309 | value[4] = 0x00; | |
310 | value[5] = 0x00; | |
311 | value[6] = 0x00; | |
30bb75d7 MM |
312 | |
313 | if (range == 200 || range == 900) { /* Do not apply any fine limit */ | |
314 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
315 | return; | |
316 | } | |
317 | ||
318 | /* Construct fine limit command */ | |
319 | start_left = (((full_range - range + 1) * 2047) / full_range); | |
320 | start_right = 0xfff - start_left; | |
321 | ||
74479ba8 MM |
322 | value[2] = start_left >> 4; |
323 | value[3] = start_right >> 4; | |
324 | value[4] = 0xff; | |
325 | value[5] = (start_right & 0xe) << 4 | (start_left & 0xe); | |
326 | value[6] = 0xff; | |
30bb75d7 MM |
327 | |
328 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
329 | } | |
330 | ||
96440c8a MM |
331 | static void hid_lg4ff_switch_native(struct hid_device *hid, const struct lg4ff_native_cmd *cmd) |
332 | { | |
333 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
334 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
335 | __u8 i, j; | |
336 | ||
337 | j = 0; | |
338 | while (j < 7*cmd->cmd_num) { | |
339 | for (i = 0; i < 7; i++) | |
340 | report->field[0]->value[i] = cmd->cmd[j++]; | |
341 | ||
342 | usbhid_submit_report(hid, report, USB_DIR_OUT); | |
343 | } | |
344 | } | |
32c88cbc | 345 | |
30bb75d7 MM |
346 | /* Read current range and display it in terminal */ |
347 | static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, char *buf) | |
348 | { | |
30bb75d7 | 349 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
350 | struct lg4ff_device_entry *entry; |
351 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
352 | size_t count; |
353 | ||
3b6b17b7 MM |
354 | drv_data = hid_get_drvdata(hid); |
355 | if (!drv_data) { | |
356 | hid_err(hid, "Private driver data not found!\n"); | |
357 | return 0; | |
30bb75d7 | 358 | } |
3b6b17b7 MM |
359 | |
360 | entry = drv_data->device_props; | |
361 | if (!entry) { | |
362 | hid_err(hid, "Device properties not found!\n"); | |
30bb75d7 MM |
363 | return 0; |
364 | } | |
365 | ||
366 | count = scnprintf(buf, PAGE_SIZE, "%u\n", entry->range); | |
367 | return count; | |
368 | } | |
369 | ||
370 | /* Set range to user specified value, call appropriate function | |
371 | * according to the type of the wheel */ | |
372 | static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) | |
373 | { | |
30bb75d7 | 374 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
375 | struct lg4ff_device_entry *entry; |
376 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
377 | __u16 range = simple_strtoul(buf, NULL, 10); |
378 | ||
3b6b17b7 MM |
379 | drv_data = hid_get_drvdata(hid); |
380 | if (!drv_data) { | |
381 | hid_err(hid, "Private driver data not found!\n"); | |
382 | return 0; | |
30bb75d7 | 383 | } |
3b6b17b7 MM |
384 | |
385 | entry = drv_data->device_props; | |
386 | if (!entry) { | |
387 | hid_err(hid, "Device properties not found!\n"); | |
388 | return 0; | |
30bb75d7 MM |
389 | } |
390 | ||
391 | if (range == 0) | |
392 | range = entry->max_range; | |
393 | ||
394 | /* Check if the wheel supports range setting | |
395 | * and that the range is within limits for the wheel */ | |
396 | if (entry->set_range != NULL && range >= entry->min_range && range <= entry->max_range) { | |
397 | entry->set_range(hid, range); | |
398 | entry->range = range; | |
399 | } | |
400 | ||
401 | return count; | |
402 | } | |
403 | ||
22bcefdc SW |
404 | #ifdef CONFIG_LEDS_CLASS |
405 | static void lg4ff_set_leds(struct hid_device *hid, __u8 leds) | |
406 | { | |
407 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
408 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 MM |
409 | __s32 *value = report->field[0]->value; |
410 | ||
411 | value[0] = 0xf8; | |
412 | value[1] = 0x12; | |
413 | value[2] = leds; | |
414 | value[3] = 0x00; | |
415 | value[4] = 0x00; | |
416 | value[5] = 0x00; | |
417 | value[6] = 0x00; | |
22bcefdc SW |
418 | usbhid_submit_report(hid, report, USB_DIR_OUT); |
419 | } | |
420 | ||
421 | static void lg4ff_led_set_brightness(struct led_classdev *led_cdev, | |
422 | enum led_brightness value) | |
423 | { | |
424 | struct device *dev = led_cdev->dev->parent; | |
425 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
4629fd16 | 426 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
427 | struct lg4ff_device_entry *entry; |
428 | int i, state = 0; | |
429 | ||
430 | if (!drv_data) { | |
431 | hid_err(hid, "Device data not found."); | |
432 | return; | |
433 | } | |
434 | ||
435 | entry = (struct lg4ff_device_entry *)drv_data->device_props; | |
436 | ||
437 | if (!entry) { | |
438 | hid_err(hid, "Device properties not found."); | |
439 | return; | |
440 | } | |
441 | ||
442 | for (i = 0; i < 5; i++) { | |
443 | if (led_cdev != entry->led[i]) | |
444 | continue; | |
445 | state = (entry->led_state >> i) & 1; | |
446 | if (value == LED_OFF && state) { | |
447 | entry->led_state &= ~(1 << i); | |
448 | lg4ff_set_leds(hid, entry->led_state); | |
449 | } else if (value != LED_OFF && !state) { | |
450 | entry->led_state |= 1 << i; | |
451 | lg4ff_set_leds(hid, entry->led_state); | |
452 | } | |
453 | break; | |
454 | } | |
455 | } | |
456 | ||
457 | static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev) | |
458 | { | |
459 | struct device *dev = led_cdev->dev->parent; | |
460 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
4629fd16 | 461 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
462 | struct lg4ff_device_entry *entry; |
463 | int i, value = 0; | |
464 | ||
465 | if (!drv_data) { | |
466 | hid_err(hid, "Device data not found."); | |
467 | return LED_OFF; | |
468 | } | |
469 | ||
470 | entry = (struct lg4ff_device_entry *)drv_data->device_props; | |
471 | ||
472 | if (!entry) { | |
473 | hid_err(hid, "Device properties not found."); | |
474 | return LED_OFF; | |
475 | } | |
476 | ||
477 | for (i = 0; i < 5; i++) | |
478 | if (led_cdev == entry->led[i]) { | |
479 | value = (entry->led_state >> i) & 1; | |
480 | break; | |
481 | } | |
482 | ||
483 | return value ? LED_FULL : LED_OFF; | |
484 | } | |
485 | #endif | |
486 | ||
32c88cbc SW |
487 | int lg4ff_init(struct hid_device *hid) |
488 | { | |
489 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); | |
490 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
491 | struct input_dev *dev = hidinput->input; | |
492 | struct hid_report *report; | |
493 | struct hid_field *field; | |
30bb75d7 | 494 | struct lg4ff_device_entry *entry; |
3b6b17b7 | 495 | struct lg_drv_data *drv_data; |
30bb75d7 | 496 | struct usb_device_descriptor *udesc; |
7362cd22 | 497 | int error, i, j; |
96440c8a | 498 | __u16 bcdDevice, rev_maj, rev_min; |
32c88cbc SW |
499 | |
500 | /* Find the report to use */ | |
501 | if (list_empty(report_list)) { | |
4291ee30 | 502 | hid_err(hid, "No output report found\n"); |
32c88cbc SW |
503 | return -1; |
504 | } | |
505 | ||
506 | /* Check that the report looks ok */ | |
507 | report = list_entry(report_list->next, struct hid_report, list); | |
508 | if (!report) { | |
4291ee30 | 509 | hid_err(hid, "NULL output report\n"); |
32c88cbc SW |
510 | return -1; |
511 | } | |
512 | ||
513 | field = report->field[0]; | |
514 | if (!field) { | |
4291ee30 | 515 | hid_err(hid, "NULL field\n"); |
32c88cbc SW |
516 | return -1; |
517 | } | |
30bb75d7 | 518 | |
7362cd22 MM |
519 | /* Check what wheel has been connected */ |
520 | for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { | |
521 | if (hid->product == lg4ff_devices[i].product_id) { | |
522 | dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id); | |
523 | break; | |
524 | } | |
525 | } | |
526 | ||
527 | if (i == ARRAY_SIZE(lg4ff_devices)) { | |
528 | hid_err(hid, "Device is not supported by lg4ff driver. If you think it should be, consider reporting a bug to" | |
529 | "LKML, Simon Wood <simon@mungewell.org> or Michal Maly <madcatxster@gmail.com>\n"); | |
530 | return -1; | |
531 | } | |
32c88cbc | 532 | |
96440c8a MM |
533 | /* Attempt to switch wheel to native mode when applicable */ |
534 | udesc = &(hid_to_usb_dev(hid)->descriptor); | |
535 | if (!udesc) { | |
536 | hid_err(hid, "NULL USB device descriptor\n"); | |
537 | return -1; | |
538 | } | |
539 | bcdDevice = le16_to_cpu(udesc->bcdDevice); | |
540 | rev_maj = bcdDevice >> 8; | |
541 | rev_min = bcdDevice & 0xff; | |
542 | ||
543 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_WHEEL) { | |
544 | dbg_hid("Generic wheel detected, can it do native?\n"); | |
545 | dbg_hid("USB revision: %2x.%02x\n", rev_maj, rev_min); | |
546 | ||
547 | for (j = 0; j < ARRAY_SIZE(lg4ff_revs); j++) { | |
548 | if (lg4ff_revs[j].rev_maj == rev_maj && lg4ff_revs[j].rev_min == rev_min) { | |
549 | hid_lg4ff_switch_native(hid, lg4ff_revs[j].command); | |
550 | hid_info(hid, "Switched to native mode\n"); | |
551 | } | |
552 | } | |
553 | } | |
554 | ||
7362cd22 MM |
555 | /* Set supported force feedback capabilities */ |
556 | for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) | |
557 | set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); | |
32c88cbc SW |
558 | |
559 | error = input_ff_create_memless(dev, NULL, hid_lg4ff_play); | |
560 | ||
561 | if (error) | |
562 | return error; | |
563 | ||
6e2de8e0 MM |
564 | /* Check if autocentering is available and |
565 | * set the centering force to zero by default */ | |
566 | if (test_bit(FF_AUTOCENTER, dev->ffbit)) { | |
74479ba8 | 567 | if (rev_maj == FFEX_REV_MAJ && rev_min == FFEX_REV_MIN) /* Formula Force EX expects different autocentering command */ |
6e2de8e0 MM |
568 | dev->ff->set_autocenter = hid_lg4ff_set_autocenter_ffex; |
569 | else | |
570 | dev->ff->set_autocenter = hid_lg4ff_set_autocenter_default; | |
571 | ||
572 | dev->ff->set_autocenter(dev, 0); | |
573 | } | |
32c88cbc | 574 | |
3b6b17b7 MM |
575 | /* Get private driver data */ |
576 | drv_data = hid_get_drvdata(hid); | |
577 | if (!drv_data) { | |
578 | hid_err(hid, "Cannot add device, private driver data not allocated\n"); | |
579 | return -1; | |
30bb75d7 MM |
580 | } |
581 | ||
3b6b17b7 | 582 | /* Initialize device properties */ |
8383c6bf | 583 | entry = kzalloc(sizeof(struct lg4ff_device_entry), GFP_KERNEL); |
30bb75d7 | 584 | if (!entry) { |
3b6b17b7 | 585 | hid_err(hid, "Cannot add device, insufficient memory to allocate device properties.\n"); |
30bb75d7 MM |
586 | return -ENOMEM; |
587 | } | |
3b6b17b7 MM |
588 | drv_data->device_props = entry; |
589 | ||
2b24a960 | 590 | entry->product_id = lg4ff_devices[i].product_id; |
30bb75d7 MM |
591 | entry->min_range = lg4ff_devices[i].min_range; |
592 | entry->max_range = lg4ff_devices[i].max_range; | |
593 | entry->set_range = lg4ff_devices[i].set_range; | |
30bb75d7 MM |
594 | |
595 | /* Create sysfs interface */ | |
596 | error = device_create_file(&hid->dev, &dev_attr_range); | |
597 | if (error) | |
598 | return error; | |
599 | dbg_hid("sysfs interface created\n"); | |
600 | ||
a2063172 MM |
601 | /* Set default axes parameters */ |
602 | switch (lg4ff_devices[i].product_id) { | |
603 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
604 | dbg_hid("Setting axes parameters for Driving Force Pro\n"); | |
605 | input_set_abs_params(dev, ABS_X, DFP_X_MIN, DFP_X_MAX, 0, 0); | |
606 | input_set_abs_params(dev, ABS_Y, DFP_PEDAL_MIN, DFP_PEDAL_MAX, 0, 0); | |
607 | input_set_abs_params(dev, ABS_RZ, DFP_PEDAL_MIN, DFP_PEDAL_MAX, 0, 0); | |
608 | break; | |
609 | default: | |
610 | break; | |
611 | } | |
612 | ||
30bb75d7 MM |
613 | /* Set the maximum range to start with */ |
614 | entry->range = entry->max_range; | |
615 | if (entry->set_range != NULL) | |
616 | entry->set_range(hid, entry->range); | |
617 | ||
22bcefdc SW |
618 | #ifdef CONFIG_LEDS_CLASS |
619 | /* register led subsystem - G27 only */ | |
620 | entry->led_state = 0; | |
621 | for (j = 0; j < 5; j++) | |
622 | entry->led[j] = NULL; | |
623 | ||
624 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G27_WHEEL) { | |
625 | struct led_classdev *led; | |
626 | size_t name_sz; | |
627 | char *name; | |
628 | ||
629 | lg4ff_set_leds(hid, 0); | |
630 | ||
631 | name_sz = strlen(dev_name(&hid->dev)) + 8; | |
632 | ||
633 | for (j = 0; j < 5; j++) { | |
634 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); | |
635 | if (!led) { | |
636 | hid_err(hid, "can't allocate memory for LED %d\n", j); | |
637 | goto err; | |
638 | } | |
639 | ||
640 | name = (void *)(&led[1]); | |
641 | snprintf(name, name_sz, "%s::RPM%d", dev_name(&hid->dev), j+1); | |
642 | led->name = name; | |
643 | led->brightness = 0; | |
644 | led->max_brightness = 1; | |
645 | led->brightness_get = lg4ff_led_get_brightness; | |
646 | led->brightness_set = lg4ff_led_set_brightness; | |
647 | ||
648 | entry->led[j] = led; | |
649 | error = led_classdev_register(&hid->dev, led); | |
650 | ||
651 | if (error) { | |
652 | hid_err(hid, "failed to register LED %d. Aborting.\n", j); | |
653 | err: | |
654 | /* Deregister LEDs (if any) */ | |
655 | for (j = 0; j < 5; j++) { | |
656 | led = entry->led[j]; | |
657 | entry->led[j] = NULL; | |
658 | if (!led) | |
659 | continue; | |
660 | led_classdev_unregister(led); | |
661 | kfree(led); | |
662 | } | |
663 | goto out; /* Let the driver continue without LEDs */ | |
664 | } | |
665 | } | |
666 | } | |
22bcefdc | 667 | out: |
c6e6dc87 | 668 | #endif |
64013800 | 669 | hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n"); |
32c88cbc SW |
670 | return 0; |
671 | } | |
672 | ||
2b24a960 MM |
673 | |
674 | ||
30bb75d7 MM |
675 | int lg4ff_deinit(struct hid_device *hid) |
676 | { | |
30bb75d7 | 677 | struct lg4ff_device_entry *entry; |
3b6b17b7 MM |
678 | struct lg_drv_data *drv_data; |
679 | ||
6a2e176b MM |
680 | device_remove_file(&hid->dev, &dev_attr_range); |
681 | ||
3b6b17b7 MM |
682 | drv_data = hid_get_drvdata(hid); |
683 | if (!drv_data) { | |
684 | hid_err(hid, "Error while deinitializing device, no private driver data.\n"); | |
685 | return -1; | |
30bb75d7 | 686 | } |
3b6b17b7 MM |
687 | entry = drv_data->device_props; |
688 | if (!entry) { | |
689 | hid_err(hid, "Error while deinitializing device, no device properties data.\n"); | |
30bb75d7 MM |
690 | return -1; |
691 | } | |
22bcefdc SW |
692 | |
693 | #ifdef CONFIG_LEDS_CLASS | |
694 | { | |
695 | int j; | |
696 | struct led_classdev *led; | |
697 | ||
698 | /* Deregister LEDs (if any) */ | |
699 | for (j = 0; j < 5; j++) { | |
700 | ||
701 | led = entry->led[j]; | |
702 | entry->led[j] = NULL; | |
703 | if (!led) | |
704 | continue; | |
705 | led_classdev_unregister(led); | |
706 | kfree(led); | |
707 | } | |
708 | } | |
709 | #endif | |
710 | ||
3b6b17b7 MM |
711 | /* Deallocate memory */ |
712 | kfree(entry); | |
30bb75d7 | 713 | |
30bb75d7 MM |
714 | dbg_hid("Device successfully unregistered\n"); |
715 | return 0; | |
716 | } |