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 | |
d991938a | 37 | #define DFGT2_REV_MIN 0x26 |
96440c8a MM |
38 | #define DFP_REV_MAJ 0x11 |
39 | #define DFP_REV_MIN 0x06 | |
40 | #define FFEX_REV_MAJ 0x21 | |
41 | #define FFEX_REV_MIN 0x00 | |
42 | #define G25_REV_MAJ 0x12 | |
43 | #define G25_REV_MIN 0x22 | |
44 | #define G27_REV_MAJ 0x12 | |
45 | #define G27_REV_MIN 0x38 | |
6b5625b2 | 46 | #define G27_2_REV_MIN 0x39 |
96440c8a | 47 | |
30bb75d7 MM |
48 | #define to_hid_device(pdev) container_of(pdev, struct hid_device, dev) |
49 | ||
50 | static void hid_lg4ff_set_range_dfp(struct hid_device *hid, u16 range); | |
51 | static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range); | |
52 | static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, char *buf); | |
53 | static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); | |
54 | ||
5c143c02 | 55 | static DEVICE_ATTR(range, S_IRWXU | S_IRWXG | S_IROTH, lg4ff_range_show, lg4ff_range_store); |
30bb75d7 | 56 | |
30bb75d7 | 57 | struct lg4ff_device_entry { |
2b24a960 | 58 | __u32 product_id; |
30bb75d7 MM |
59 | __u16 range; |
60 | __u16 min_range; | |
61 | __u16 max_range; | |
22bcefdc SW |
62 | #ifdef CONFIG_LEDS_CLASS |
63 | __u8 led_state; | |
64 | struct led_classdev *led[5]; | |
65 | #endif | |
30bb75d7 MM |
66 | struct list_head list; |
67 | void (*set_range)(struct hid_device *hid, u16 range); | |
68 | }; | |
69 | ||
7362cd22 | 70 | static const signed short lg4ff_wheel_effects[] = { |
32c88cbc SW |
71 | FF_CONSTANT, |
72 | FF_AUTOCENTER, | |
73 | -1 | |
74 | }; | |
75 | ||
7362cd22 MM |
76 | struct lg4ff_wheel { |
77 | const __u32 product_id; | |
78 | const signed short *ff_effects; | |
79 | const __u16 min_range; | |
80 | const __u16 max_range; | |
30bb75d7 | 81 | void (*set_range)(struct hid_device *hid, u16 range); |
7362cd22 MM |
82 | }; |
83 | ||
84 | static const struct lg4ff_wheel lg4ff_devices[] = { | |
30bb75d7 MM |
85 | {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, |
86 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270, NULL}, | |
87 | {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_dfp}, | |
88 | {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, | |
89 | {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, | |
90 | {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900, hid_lg4ff_set_range_g25}, | |
91 | {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270, NULL}, | |
92 | {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270, NULL} | |
7362cd22 MM |
93 | }; |
94 | ||
96440c8a MM |
95 | struct lg4ff_native_cmd { |
96 | const __u8 cmd_num; /* Number of commands to send */ | |
97 | const __u8 cmd[]; | |
98 | }; | |
99 | ||
100 | struct lg4ff_usb_revision { | |
101 | const __u16 rev_maj; | |
102 | const __u16 rev_min; | |
103 | const struct lg4ff_native_cmd *command; | |
104 | }; | |
105 | ||
106 | static const struct lg4ff_native_cmd native_dfp = { | |
107 | 1, | |
108 | {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} | |
109 | }; | |
110 | ||
111 | static const struct lg4ff_native_cmd native_dfgt = { | |
112 | 2, | |
113 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ | |
114 | 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ | |
115 | }; | |
116 | ||
117 | static const struct lg4ff_native_cmd native_g25 = { | |
118 | 1, | |
119 | {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} | |
120 | }; | |
121 | ||
122 | static const struct lg4ff_native_cmd native_g27 = { | |
123 | 2, | |
124 | {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ | |
125 | 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ | |
126 | }; | |
127 | ||
128 | static const struct lg4ff_usb_revision lg4ff_revs[] = { | |
129 | {DFGT_REV_MAJ, DFGT_REV_MIN, &native_dfgt}, /* Driving Force GT */ | |
d991938a | 130 | {DFGT_REV_MAJ, DFGT2_REV_MIN, &native_dfgt}, /* Driving Force GT v2 */ |
96440c8a MM |
131 | {DFP_REV_MAJ, DFP_REV_MIN, &native_dfp}, /* Driving Force Pro */ |
132 | {G25_REV_MAJ, G25_REV_MIN, &native_g25}, /* G25 */ | |
133 | {G27_REV_MAJ, G27_REV_MIN, &native_g27}, /* G27 */ | |
6b5625b2 | 134 | {G27_REV_MAJ, G27_2_REV_MIN, &native_g27}, /* G27 v2 */ |
96440c8a MM |
135 | }; |
136 | ||
2b24a960 MM |
137 | /* Recalculates X axis value accordingly to currently selected range */ |
138 | static __s32 lg4ff_adjust_dfp_x_axis(__s32 value, __u16 range) | |
139 | { | |
140 | __u16 max_range; | |
141 | __s32 new_value; | |
142 | ||
143 | if (range == 900) | |
144 | return value; | |
145 | else if (range == 200) | |
146 | return value; | |
147 | else if (range < 200) | |
148 | max_range = 200; | |
149 | else | |
150 | max_range = 900; | |
151 | ||
152 | new_value = 8192 + mult_frac(value - 8192, max_range, range); | |
153 | if (new_value < 0) | |
154 | return 0; | |
155 | else if (new_value > 16383) | |
156 | return 16383; | |
157 | else | |
158 | return new_value; | |
159 | } | |
160 | ||
161 | int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_field *field, | |
162 | struct hid_usage *usage, __s32 value, struct lg_drv_data *drv_data) | |
163 | { | |
164 | struct lg4ff_device_entry *entry = drv_data->device_props; | |
165 | __s32 new_value = 0; | |
166 | ||
167 | if (!entry) { | |
168 | hid_err(hid, "Device properties not found"); | |
169 | return 0; | |
170 | } | |
171 | ||
172 | switch (entry->product_id) { | |
173 | case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: | |
174 | switch (usage->code) { | |
175 | case ABS_X: | |
176 | new_value = lg4ff_adjust_dfp_x_axis(value, entry->range); | |
177 | input_event(field->hidinput->input, usage->type, usage->code, new_value); | |
178 | return 1; | |
179 | default: | |
180 | return 0; | |
181 | } | |
182 | default: | |
183 | return 0; | |
184 | } | |
185 | } | |
186 | ||
30bb75d7 | 187 | static int hid_lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) |
32c88cbc SW |
188 | { |
189 | struct hid_device *hid = input_get_drvdata(dev); | |
190 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
191 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 | 192 | __s32 *value = report->field[0]->value; |
32c88cbc SW |
193 | int x; |
194 | ||
a80fe5d6 | 195 | #define CLAMP(x) do { if (x < 0) x = 0; else if (x > 0xff) x = 0xff; } while (0) |
32c88cbc SW |
196 | |
197 | switch (effect->type) { | |
198 | case FF_CONSTANT: | |
199 | x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ | |
200 | CLAMP(x); | |
56930e7a SW |
201 | |
202 | if (x == 0x80) { | |
203 | /* De-activate force in slot-1*/ | |
204 | value[0] = 0x13; | |
205 | value[1] = 0x00; | |
206 | value[2] = 0x00; | |
207 | value[3] = 0x00; | |
208 | value[4] = 0x00; | |
209 | value[5] = 0x00; | |
210 | value[6] = 0x00; | |
211 | ||
212 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); | |
213 | return 0; | |
214 | } | |
215 | ||
74479ba8 MM |
216 | value[0] = 0x11; /* Slot 1 */ |
217 | value[1] = 0x08; | |
218 | value[2] = x; | |
219 | value[3] = 0x80; | |
220 | value[4] = 0x00; | |
221 | value[5] = 0x00; | |
222 | value[6] = 0x00; | |
32c88cbc | 223 | |
d8814272 | 224 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
32c88cbc SW |
225 | break; |
226 | } | |
227 | return 0; | |
228 | } | |
229 | ||
6e2de8e0 MM |
230 | /* Sends default autocentering command compatible with |
231 | * all wheels except Formula Force EX */ | |
232 | static void hid_lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude) | |
32c88cbc SW |
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; |
f8c23156 | 238 | __u32 expand_a, expand_b; |
1859762e SW |
239 | struct lg4ff_device_entry *entry; |
240 | struct lg_drv_data *drv_data; | |
241 | ||
242 | drv_data = hid_get_drvdata(hid); | |
243 | if (!drv_data) { | |
244 | hid_err(hid, "Private driver data not found!\n"); | |
245 | return; | |
246 | } | |
247 | ||
248 | entry = drv_data->device_props; | |
249 | if (!entry) { | |
250 | hid_err(hid, "Device properties not found!\n"); | |
251 | return; | |
252 | } | |
f8c23156 | 253 | |
d2c02da5 SW |
254 | /* De-activate Auto-Center */ |
255 | if (magnitude == 0) { | |
256 | value[0] = 0xf5; | |
257 | value[1] = 0x00; | |
258 | value[2] = 0x00; | |
259 | value[3] = 0x00; | |
260 | value[4] = 0x00; | |
261 | value[5] = 0x00; | |
262 | value[6] = 0x00; | |
263 | ||
264 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); | |
265 | return; | |
266 | } | |
267 | ||
f8c23156 SW |
268 | if (magnitude <= 0xaaaa) { |
269 | expand_a = 0x0c * magnitude; | |
270 | expand_b = 0x80 * magnitude; | |
271 | } else { | |
272 | expand_a = (0x0c * 0xaaaa) + 0x06 * (magnitude - 0xaaaa); | |
273 | expand_b = (0x80 * 0xaaaa) + 0xff * (magnitude - 0xaaaa); | |
274 | } | |
32c88cbc | 275 | |
1859762e SW |
276 | /* Adjust for non-MOMO wheels */ |
277 | switch (entry->product_id) { | |
278 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL: | |
279 | case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2: | |
280 | break; | |
281 | default: | |
282 | expand_a = expand_a >> 1; | |
283 | break; | |
284 | } | |
285 | ||
74479ba8 MM |
286 | value[0] = 0xfe; |
287 | value[1] = 0x0d; | |
f8c23156 SW |
288 | value[2] = expand_a / 0xaaaa; |
289 | value[3] = expand_a / 0xaaaa; | |
290 | value[4] = expand_b / 0xaaaa; | |
74479ba8 MM |
291 | value[5] = 0x00; |
292 | value[6] = 0x00; | |
32c88cbc | 293 | |
d8814272 | 294 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
d2c02da5 SW |
295 | |
296 | /* Activate Auto-Center */ | |
297 | value[0] = 0x14; | |
298 | value[1] = 0x00; | |
299 | value[2] = 0x00; | |
300 | value[3] = 0x00; | |
301 | value[4] = 0x00; | |
302 | value[5] = 0x00; | |
303 | value[6] = 0x00; | |
304 | ||
305 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); | |
32c88cbc SW |
306 | } |
307 | ||
6e2de8e0 MM |
308 | /* Sends autocentering command compatible with Formula Force EX */ |
309 | static void hid_lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude) | |
310 | { | |
311 | struct hid_device *hid = input_get_drvdata(dev); | |
312 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
313 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 | 314 | __s32 *value = report->field[0]->value; |
6e2de8e0 | 315 | magnitude = magnitude * 90 / 65535; |
6e2de8e0 | 316 | |
74479ba8 MM |
317 | value[0] = 0xfe; |
318 | value[1] = 0x03; | |
319 | value[2] = magnitude >> 14; | |
320 | value[3] = magnitude >> 14; | |
321 | value[4] = magnitude; | |
322 | value[5] = 0x00; | |
323 | value[6] = 0x00; | |
6e2de8e0 | 324 | |
d8814272 | 325 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
6e2de8e0 MM |
326 | } |
327 | ||
30bb75d7 MM |
328 | /* Sends command to set range compatible with G25/G27/Driving Force GT */ |
329 | static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range) | |
330 | { | |
331 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
332 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 MM |
333 | __s32 *value = report->field[0]->value; |
334 | ||
30bb75d7 MM |
335 | dbg_hid("G25/G27/DFGT: setting range to %u\n", range); |
336 | ||
74479ba8 MM |
337 | value[0] = 0xf8; |
338 | value[1] = 0x81; | |
339 | value[2] = range & 0x00ff; | |
340 | value[3] = (range & 0xff00) >> 8; | |
341 | value[4] = 0x00; | |
342 | value[5] = 0x00; | |
343 | value[6] = 0x00; | |
30bb75d7 | 344 | |
d8814272 | 345 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
30bb75d7 MM |
346 | } |
347 | ||
348 | /* Sends commands to set range compatible with Driving Force Pro wheel */ | |
349 | static void hid_lg4ff_set_range_dfp(struct hid_device *hid, __u16 range) | |
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); | |
353 | int start_left, start_right, full_range; | |
74479ba8 MM |
354 | __s32 *value = report->field[0]->value; |
355 | ||
30bb75d7 MM |
356 | dbg_hid("Driving Force Pro: setting range to %u\n", range); |
357 | ||
358 | /* Prepare "coarse" limit command */ | |
74479ba8 | 359 | value[0] = 0xf8; |
a80fe5d6 | 360 | value[1] = 0x00; /* Set later */ |
74479ba8 MM |
361 | value[2] = 0x00; |
362 | value[3] = 0x00; | |
363 | value[4] = 0x00; | |
364 | value[5] = 0x00; | |
365 | value[6] = 0x00; | |
30bb75d7 MM |
366 | |
367 | if (range > 200) { | |
368 | report->field[0]->value[1] = 0x03; | |
369 | full_range = 900; | |
370 | } else { | |
371 | report->field[0]->value[1] = 0x02; | |
372 | full_range = 200; | |
373 | } | |
d8814272 | 374 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
30bb75d7 MM |
375 | |
376 | /* Prepare "fine" limit command */ | |
74479ba8 MM |
377 | value[0] = 0x81; |
378 | value[1] = 0x0b; | |
379 | value[2] = 0x00; | |
380 | value[3] = 0x00; | |
381 | value[4] = 0x00; | |
382 | value[5] = 0x00; | |
383 | value[6] = 0x00; | |
30bb75d7 MM |
384 | |
385 | if (range == 200 || range == 900) { /* Do not apply any fine limit */ | |
d8814272 | 386 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
30bb75d7 MM |
387 | return; |
388 | } | |
389 | ||
390 | /* Construct fine limit command */ | |
391 | start_left = (((full_range - range + 1) * 2047) / full_range); | |
392 | start_right = 0xfff - start_left; | |
393 | ||
74479ba8 MM |
394 | value[2] = start_left >> 4; |
395 | value[3] = start_right >> 4; | |
396 | value[4] = 0xff; | |
397 | value[5] = (start_right & 0xe) << 4 | (start_left & 0xe); | |
398 | value[6] = 0xff; | |
30bb75d7 | 399 | |
d8814272 | 400 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
30bb75d7 MM |
401 | } |
402 | ||
96440c8a MM |
403 | static void hid_lg4ff_switch_native(struct hid_device *hid, const struct lg4ff_native_cmd *cmd) |
404 | { | |
405 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
406 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
407 | __u8 i, j; | |
408 | ||
409 | j = 0; | |
410 | while (j < 7*cmd->cmd_num) { | |
411 | for (i = 0; i < 7; i++) | |
412 | report->field[0]->value[i] = cmd->cmd[j++]; | |
413 | ||
d8814272 | 414 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
96440c8a MM |
415 | } |
416 | } | |
32c88cbc | 417 | |
30bb75d7 MM |
418 | /* Read current range and display it in terminal */ |
419 | static ssize_t lg4ff_range_show(struct device *dev, struct device_attribute *attr, char *buf) | |
420 | { | |
30bb75d7 | 421 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
422 | struct lg4ff_device_entry *entry; |
423 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
424 | size_t count; |
425 | ||
3b6b17b7 MM |
426 | drv_data = hid_get_drvdata(hid); |
427 | if (!drv_data) { | |
428 | hid_err(hid, "Private driver data not found!\n"); | |
429 | return 0; | |
30bb75d7 | 430 | } |
3b6b17b7 MM |
431 | |
432 | entry = drv_data->device_props; | |
433 | if (!entry) { | |
434 | hid_err(hid, "Device properties not found!\n"); | |
30bb75d7 MM |
435 | return 0; |
436 | } | |
437 | ||
438 | count = scnprintf(buf, PAGE_SIZE, "%u\n", entry->range); | |
439 | return count; | |
440 | } | |
441 | ||
442 | /* Set range to user specified value, call appropriate function | |
443 | * according to the type of the wheel */ | |
444 | static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) | |
445 | { | |
30bb75d7 | 446 | struct hid_device *hid = to_hid_device(dev); |
3b6b17b7 MM |
447 | struct lg4ff_device_entry *entry; |
448 | struct lg_drv_data *drv_data; | |
30bb75d7 MM |
449 | __u16 range = simple_strtoul(buf, NULL, 10); |
450 | ||
3b6b17b7 MM |
451 | drv_data = hid_get_drvdata(hid); |
452 | if (!drv_data) { | |
453 | hid_err(hid, "Private driver data not found!\n"); | |
454 | return 0; | |
30bb75d7 | 455 | } |
3b6b17b7 MM |
456 | |
457 | entry = drv_data->device_props; | |
458 | if (!entry) { | |
459 | hid_err(hid, "Device properties not found!\n"); | |
460 | return 0; | |
30bb75d7 MM |
461 | } |
462 | ||
463 | if (range == 0) | |
464 | range = entry->max_range; | |
465 | ||
466 | /* Check if the wheel supports range setting | |
467 | * and that the range is within limits for the wheel */ | |
468 | if (entry->set_range != NULL && range >= entry->min_range && range <= entry->max_range) { | |
469 | entry->set_range(hid, range); | |
470 | entry->range = range; | |
471 | } | |
472 | ||
473 | return count; | |
474 | } | |
475 | ||
22bcefdc SW |
476 | #ifdef CONFIG_LEDS_CLASS |
477 | static void lg4ff_set_leds(struct hid_device *hid, __u8 leds) | |
478 | { | |
479 | struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; | |
480 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
74479ba8 MM |
481 | __s32 *value = report->field[0]->value; |
482 | ||
483 | value[0] = 0xf8; | |
484 | value[1] = 0x12; | |
485 | value[2] = leds; | |
486 | value[3] = 0x00; | |
487 | value[4] = 0x00; | |
488 | value[5] = 0x00; | |
489 | value[6] = 0x00; | |
d8814272 | 490 | hid_hw_request(hid, report, HID_REQ_SET_REPORT); |
22bcefdc SW |
491 | } |
492 | ||
493 | static void lg4ff_led_set_brightness(struct led_classdev *led_cdev, | |
494 | enum led_brightness value) | |
495 | { | |
496 | struct device *dev = led_cdev->dev->parent; | |
497 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
4629fd16 | 498 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
499 | struct lg4ff_device_entry *entry; |
500 | int i, state = 0; | |
501 | ||
502 | if (!drv_data) { | |
503 | hid_err(hid, "Device data not found."); | |
504 | return; | |
505 | } | |
506 | ||
507 | entry = (struct lg4ff_device_entry *)drv_data->device_props; | |
508 | ||
509 | if (!entry) { | |
510 | hid_err(hid, "Device properties not found."); | |
511 | return; | |
512 | } | |
513 | ||
514 | for (i = 0; i < 5; i++) { | |
515 | if (led_cdev != entry->led[i]) | |
516 | continue; | |
517 | state = (entry->led_state >> i) & 1; | |
518 | if (value == LED_OFF && state) { | |
519 | entry->led_state &= ~(1 << i); | |
520 | lg4ff_set_leds(hid, entry->led_state); | |
521 | } else if (value != LED_OFF && !state) { | |
522 | entry->led_state |= 1 << i; | |
523 | lg4ff_set_leds(hid, entry->led_state); | |
524 | } | |
525 | break; | |
526 | } | |
527 | } | |
528 | ||
529 | static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cdev) | |
530 | { | |
531 | struct device *dev = led_cdev->dev->parent; | |
532 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
4629fd16 | 533 | struct lg_drv_data *drv_data = hid_get_drvdata(hid); |
22bcefdc SW |
534 | struct lg4ff_device_entry *entry; |
535 | int i, value = 0; | |
536 | ||
537 | if (!drv_data) { | |
538 | hid_err(hid, "Device data not found."); | |
539 | return LED_OFF; | |
540 | } | |
541 | ||
542 | entry = (struct lg4ff_device_entry *)drv_data->device_props; | |
543 | ||
544 | if (!entry) { | |
545 | hid_err(hid, "Device properties not found."); | |
546 | return LED_OFF; | |
547 | } | |
548 | ||
549 | for (i = 0; i < 5; i++) | |
550 | if (led_cdev == entry->led[i]) { | |
551 | value = (entry->led_state >> i) & 1; | |
552 | break; | |
553 | } | |
554 | ||
555 | return value ? LED_FULL : LED_OFF; | |
556 | } | |
557 | #endif | |
558 | ||
32c88cbc SW |
559 | int lg4ff_init(struct hid_device *hid) |
560 | { | |
561 | struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); | |
32c88cbc | 562 | struct input_dev *dev = hidinput->input; |
30bb75d7 | 563 | struct lg4ff_device_entry *entry; |
3b6b17b7 | 564 | struct lg_drv_data *drv_data; |
30bb75d7 | 565 | struct usb_device_descriptor *udesc; |
7362cd22 | 566 | int error, i, j; |
96440c8a | 567 | __u16 bcdDevice, rev_maj, rev_min; |
32c88cbc | 568 | |
32c88cbc | 569 | /* Check that the report looks ok */ |
0fb6bd06 | 570 | if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7)) |
32c88cbc | 571 | return -1; |
30bb75d7 | 572 | |
7362cd22 MM |
573 | /* Check what wheel has been connected */ |
574 | for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { | |
575 | if (hid->product == lg4ff_devices[i].product_id) { | |
576 | dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id); | |
577 | break; | |
578 | } | |
579 | } | |
580 | ||
581 | if (i == ARRAY_SIZE(lg4ff_devices)) { | |
582 | hid_err(hid, "Device is not supported by lg4ff driver. If you think it should be, consider reporting a bug to" | |
583 | "LKML, Simon Wood <simon@mungewell.org> or Michal Maly <madcatxster@gmail.com>\n"); | |
584 | return -1; | |
585 | } | |
32c88cbc | 586 | |
96440c8a MM |
587 | /* Attempt to switch wheel to native mode when applicable */ |
588 | udesc = &(hid_to_usb_dev(hid)->descriptor); | |
589 | if (!udesc) { | |
590 | hid_err(hid, "NULL USB device descriptor\n"); | |
591 | return -1; | |
592 | } | |
593 | bcdDevice = le16_to_cpu(udesc->bcdDevice); | |
594 | rev_maj = bcdDevice >> 8; | |
595 | rev_min = bcdDevice & 0xff; | |
596 | ||
597 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_WHEEL) { | |
598 | dbg_hid("Generic wheel detected, can it do native?\n"); | |
599 | dbg_hid("USB revision: %2x.%02x\n", rev_maj, rev_min); | |
600 | ||
601 | for (j = 0; j < ARRAY_SIZE(lg4ff_revs); j++) { | |
602 | if (lg4ff_revs[j].rev_maj == rev_maj && lg4ff_revs[j].rev_min == rev_min) { | |
603 | hid_lg4ff_switch_native(hid, lg4ff_revs[j].command); | |
604 | hid_info(hid, "Switched to native mode\n"); | |
605 | } | |
606 | } | |
607 | } | |
608 | ||
7362cd22 MM |
609 | /* Set supported force feedback capabilities */ |
610 | for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) | |
611 | set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); | |
32c88cbc SW |
612 | |
613 | error = input_ff_create_memless(dev, NULL, hid_lg4ff_play); | |
614 | ||
615 | if (error) | |
616 | return error; | |
617 | ||
3b6b17b7 MM |
618 | /* Get private driver data */ |
619 | drv_data = hid_get_drvdata(hid); | |
620 | if (!drv_data) { | |
621 | hid_err(hid, "Cannot add device, private driver data not allocated\n"); | |
622 | return -1; | |
30bb75d7 MM |
623 | } |
624 | ||
3b6b17b7 | 625 | /* Initialize device properties */ |
8383c6bf | 626 | entry = kzalloc(sizeof(struct lg4ff_device_entry), GFP_KERNEL); |
30bb75d7 | 627 | if (!entry) { |
3b6b17b7 | 628 | hid_err(hid, "Cannot add device, insufficient memory to allocate device properties.\n"); |
30bb75d7 MM |
629 | return -ENOMEM; |
630 | } | |
3b6b17b7 MM |
631 | drv_data->device_props = entry; |
632 | ||
2b24a960 | 633 | entry->product_id = lg4ff_devices[i].product_id; |
30bb75d7 MM |
634 | entry->min_range = lg4ff_devices[i].min_range; |
635 | entry->max_range = lg4ff_devices[i].max_range; | |
636 | entry->set_range = lg4ff_devices[i].set_range; | |
30bb75d7 | 637 | |
114a55cf SW |
638 | /* Check if autocentering is available and |
639 | * set the centering force to zero by default */ | |
640 | if (test_bit(FF_AUTOCENTER, dev->ffbit)) { | |
641 | if (rev_maj == FFEX_REV_MAJ && rev_min == FFEX_REV_MIN) /* Formula Force EX expects different autocentering command */ | |
642 | dev->ff->set_autocenter = hid_lg4ff_set_autocenter_ffex; | |
643 | else | |
644 | dev->ff->set_autocenter = hid_lg4ff_set_autocenter_default; | |
645 | ||
646 | dev->ff->set_autocenter(dev, 0); | |
647 | } | |
648 | ||
30bb75d7 MM |
649 | /* Create sysfs interface */ |
650 | error = device_create_file(&hid->dev, &dev_attr_range); | |
651 | if (error) | |
652 | return error; | |
653 | dbg_hid("sysfs interface created\n"); | |
654 | ||
655 | /* Set the maximum range to start with */ | |
656 | entry->range = entry->max_range; | |
657 | if (entry->set_range != NULL) | |
658 | entry->set_range(hid, entry->range); | |
659 | ||
22bcefdc SW |
660 | #ifdef CONFIG_LEDS_CLASS |
661 | /* register led subsystem - G27 only */ | |
662 | entry->led_state = 0; | |
663 | for (j = 0; j < 5; j++) | |
664 | entry->led[j] = NULL; | |
665 | ||
666 | if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_G27_WHEEL) { | |
667 | struct led_classdev *led; | |
668 | size_t name_sz; | |
669 | char *name; | |
670 | ||
671 | lg4ff_set_leds(hid, 0); | |
672 | ||
673 | name_sz = strlen(dev_name(&hid->dev)) + 8; | |
674 | ||
675 | for (j = 0; j < 5; j++) { | |
676 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); | |
677 | if (!led) { | |
678 | hid_err(hid, "can't allocate memory for LED %d\n", j); | |
679 | goto err; | |
680 | } | |
681 | ||
682 | name = (void *)(&led[1]); | |
683 | snprintf(name, name_sz, "%s::RPM%d", dev_name(&hid->dev), j+1); | |
684 | led->name = name; | |
685 | led->brightness = 0; | |
686 | led->max_brightness = 1; | |
687 | led->brightness_get = lg4ff_led_get_brightness; | |
688 | led->brightness_set = lg4ff_led_set_brightness; | |
689 | ||
690 | entry->led[j] = led; | |
691 | error = led_classdev_register(&hid->dev, led); | |
692 | ||
693 | if (error) { | |
694 | hid_err(hid, "failed to register LED %d. Aborting.\n", j); | |
695 | err: | |
696 | /* Deregister LEDs (if any) */ | |
697 | for (j = 0; j < 5; j++) { | |
698 | led = entry->led[j]; | |
699 | entry->led[j] = NULL; | |
700 | if (!led) | |
701 | continue; | |
702 | led_classdev_unregister(led); | |
703 | kfree(led); | |
704 | } | |
705 | goto out; /* Let the driver continue without LEDs */ | |
706 | } | |
707 | } | |
708 | } | |
22bcefdc | 709 | out: |
c6e6dc87 | 710 | #endif |
64013800 | 711 | hid_info(hid, "Force feedback support for Logitech Gaming Wheels\n"); |
32c88cbc SW |
712 | return 0; |
713 | } | |
714 | ||
2b24a960 MM |
715 | |
716 | ||
30bb75d7 MM |
717 | int lg4ff_deinit(struct hid_device *hid) |
718 | { | |
30bb75d7 | 719 | struct lg4ff_device_entry *entry; |
3b6b17b7 MM |
720 | struct lg_drv_data *drv_data; |
721 | ||
6a2e176b MM |
722 | device_remove_file(&hid->dev, &dev_attr_range); |
723 | ||
3b6b17b7 MM |
724 | drv_data = hid_get_drvdata(hid); |
725 | if (!drv_data) { | |
726 | hid_err(hid, "Error while deinitializing device, no private driver data.\n"); | |
727 | return -1; | |
30bb75d7 | 728 | } |
3b6b17b7 MM |
729 | entry = drv_data->device_props; |
730 | if (!entry) { | |
731 | hid_err(hid, "Error while deinitializing device, no device properties data.\n"); | |
30bb75d7 MM |
732 | return -1; |
733 | } | |
22bcefdc SW |
734 | |
735 | #ifdef CONFIG_LEDS_CLASS | |
736 | { | |
737 | int j; | |
738 | struct led_classdev *led; | |
739 | ||
740 | /* Deregister LEDs (if any) */ | |
741 | for (j = 0; j < 5; j++) { | |
742 | ||
743 | led = entry->led[j]; | |
744 | entry->led[j] = NULL; | |
745 | if (!led) | |
746 | continue; | |
747 | led_classdev_unregister(led); | |
748 | kfree(led); | |
749 | } | |
750 | } | |
751 | #endif | |
752 | ||
3b6b17b7 MM |
753 | /* Deallocate memory */ |
754 | kfree(entry); | |
30bb75d7 | 755 | |
30bb75d7 MM |
756 | dbg_hid("Device successfully unregistered\n"); |
757 | return 0; | |
758 | } |