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75dbb953 SW |
1 | /* |
2 | * HID driver for Steelseries SRW-S1 | |
3 | * | |
4 | * Copyright (c) 2013 Simon Wood | |
5 | */ | |
6 | ||
7 | /* | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
11 | * any later version. | |
12 | */ | |
13 | ||
14 | #include <linux/device.h> | |
2e2daff3 | 15 | #include <linux/usb.h> |
75dbb953 SW |
16 | #include <linux/hid.h> |
17 | #include <linux/module.h> | |
18 | ||
2e2daff3 | 19 | #include "usbhid/usbhid.h" |
75dbb953 SW |
20 | #include "hid-ids.h" |
21 | ||
2e2daff3 SW |
22 | #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) |
23 | #define SRWS1_NUMBER_LEDS 15 | |
24 | struct steelseries_srws1_data { | |
25 | __u16 led_state; | |
7e415762 JK |
26 | /* the last element is used for setting all leds simultaneously */ |
27 | struct led_classdev *led[SRWS1_NUMBER_LEDS + 1]; | |
2e2daff3 SW |
28 | }; |
29 | #endif | |
30 | ||
5492606d SW |
31 | /* Fixed report descriptor for Steelseries SRW-S1 wheel controller |
32 | * | |
33 | * The original descriptor hides the sensitivity and assists dials | |
34 | * a custom vendor usage page. This inserts a patch to make them | |
35 | * appear in the 'Generic Desktop' usage. | |
36 | */ | |
37 | ||
38 | static __u8 steelseries_srws1_rdesc_fixed[] = { | |
39 | 0x05, 0x01, /* Usage Page (Desktop) */ | |
40 | 0x09, 0x08, /* Usage (MultiAxis), Changed */ | |
41 | 0xA1, 0x01, /* Collection (Application), */ | |
42 | 0xA1, 0x02, /* Collection (Logical), */ | |
43 | 0x95, 0x01, /* Report Count (1), */ | |
44 | 0x05, 0x01, /* Changed Usage Page (Desktop), */ | |
45 | 0x09, 0x30, /* Changed Usage (X), */ | |
46 | 0x16, 0xF8, 0xF8, /* Logical Minimum (-1800), */ | |
47 | 0x26, 0x08, 0x07, /* Logical Maximum (1800), */ | |
48 | 0x65, 0x14, /* Unit (Degrees), */ | |
49 | 0x55, 0x0F, /* Unit Exponent (15), */ | |
50 | 0x75, 0x10, /* Report Size (16), */ | |
51 | 0x81, 0x02, /* Input (Variable), */ | |
52 | 0x09, 0x31, /* Changed Usage (Y), */ | |
53 | 0x15, 0x00, /* Logical Minimum (0), */ | |
54 | 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ | |
55 | 0x75, 0x0C, /* Report Size (12), */ | |
56 | 0x81, 0x02, /* Input (Variable), */ | |
57 | 0x09, 0x32, /* Changed Usage (Z), */ | |
58 | 0x15, 0x00, /* Logical Minimum (0), */ | |
59 | 0x26, 0xFF, 0x03, /* Logical Maximum (1023), */ | |
60 | 0x75, 0x0C, /* Report Size (12), */ | |
61 | 0x81, 0x02, /* Input (Variable), */ | |
62 | 0x05, 0x01, /* Usage Page (Desktop), */ | |
63 | 0x09, 0x39, /* Usage (Hat Switch), */ | |
64 | 0x25, 0x07, /* Logical Maximum (7), */ | |
65 | 0x35, 0x00, /* Physical Minimum (0), */ | |
66 | 0x46, 0x3B, 0x01, /* Physical Maximum (315), */ | |
67 | 0x65, 0x14, /* Unit (Degrees), */ | |
68 | 0x75, 0x04, /* Report Size (4), */ | |
69 | 0x95, 0x01, /* Report Count (1), */ | |
70 | 0x81, 0x02, /* Input (Variable), */ | |
71 | 0x25, 0x01, /* Logical Maximum (1), */ | |
72 | 0x45, 0x01, /* Physical Maximum (1), */ | |
73 | 0x65, 0x00, /* Unit, */ | |
74 | 0x75, 0x01, /* Report Size (1), */ | |
75 | 0x95, 0x03, /* Report Count (3), */ | |
76 | 0x81, 0x01, /* Input (Constant), */ | |
77 | 0x05, 0x09, /* Usage Page (Button), */ | |
78 | 0x19, 0x01, /* Usage Minimum (01h), */ | |
79 | 0x29, 0x11, /* Usage Maximum (11h), */ | |
80 | 0x95, 0x11, /* Report Count (17), */ | |
81 | 0x81, 0x02, /* Input (Variable), */ | |
82 | /* ---- Dial patch starts here ---- */ | |
83 | 0x05, 0x01, /* Usage Page (Desktop), */ | |
84 | 0x09, 0x33, /* Usage (RX), */ | |
85 | 0x75, 0x04, /* Report Size (4), */ | |
86 | 0x95, 0x02, /* Report Count (2), */ | |
87 | 0x15, 0x00, /* Logical Minimum (0), */ | |
88 | 0x25, 0x0b, /* Logical Maximum (b), */ | |
89 | 0x81, 0x02, /* Input (Variable), */ | |
90 | 0x09, 0x35, /* Usage (RZ), */ | |
91 | 0x75, 0x04, /* Report Size (4), */ | |
92 | 0x95, 0x01, /* Report Count (1), */ | |
93 | 0x25, 0x03, /* Logical Maximum (3), */ | |
94 | 0x81, 0x02, /* Input (Variable), */ | |
95 | /* ---- Dial patch ends here ---- */ | |
96 | 0x06, 0x00, 0xFF, /* Usage Page (FF00h), */ | |
97 | 0x09, 0x01, /* Usage (01h), */ | |
98 | 0x75, 0x04, /* Changed Report Size (4), */ | |
99 | 0x95, 0x0D, /* Changed Report Count (13), */ | |
100 | 0x81, 0x02, /* Input (Variable), */ | |
101 | 0xC0, /* End Collection, */ | |
102 | 0xA1, 0x02, /* Collection (Logical), */ | |
103 | 0x09, 0x02, /* Usage (02h), */ | |
104 | 0x75, 0x08, /* Report Size (8), */ | |
105 | 0x95, 0x10, /* Report Count (16), */ | |
106 | 0x91, 0x02, /* Output (Variable), */ | |
107 | 0xC0, /* End Collection, */ | |
108 | 0xC0 /* End Collection */ | |
109 | }; | |
110 | ||
2e2daff3 SW |
111 | #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) |
112 | static void steelseries_srws1_set_leds(struct hid_device *hdev, __u16 leds) | |
113 | { | |
114 | struct list_head *report_list = &hdev->report_enum[HID_OUTPUT_REPORT].report_list; | |
115 | struct hid_report *report = list_entry(report_list->next, struct hid_report, list); | |
116 | __s32 *value = report->field[0]->value; | |
117 | ||
118 | value[0] = 0x40; | |
119 | value[1] = leds & 0xFF; | |
120 | value[2] = leds >> 8; | |
121 | value[3] = 0x00; | |
122 | value[4] = 0x00; | |
123 | value[5] = 0x00; | |
124 | value[6] = 0x00; | |
125 | value[7] = 0x00; | |
126 | value[8] = 0x00; | |
127 | value[9] = 0x00; | |
128 | value[10] = 0x00; | |
129 | value[11] = 0x00; | |
130 | value[12] = 0x00; | |
131 | value[13] = 0x00; | |
132 | value[14] = 0x00; | |
133 | value[15] = 0x00; | |
134 | ||
135 | usbhid_submit_report(hdev, report, USB_DIR_OUT); | |
136 | ||
137 | /* Note: LED change does not show on device until the device is read/polled */ | |
138 | } | |
139 | ||
e25d7805 SW |
140 | static void steelseries_srws1_led_all_set_brightness(struct led_classdev *led_cdev, |
141 | enum led_brightness value) | |
142 | { | |
143 | struct device *dev = led_cdev->dev->parent; | |
144 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
145 | struct steelseries_srws1_data *drv_data = hid_get_drvdata(hid); | |
146 | ||
147 | if (!drv_data) { | |
148 | hid_err(hid, "Device data not found."); | |
149 | return; | |
150 | } | |
151 | ||
152 | if (value == LED_OFF) | |
153 | drv_data->led_state = 0; | |
154 | else | |
155 | drv_data->led_state = (1 << (SRWS1_NUMBER_LEDS + 1)) - 1; | |
156 | ||
157 | steelseries_srws1_set_leds(hid, drv_data->led_state); | |
158 | } | |
159 | ||
160 | static enum led_brightness steelseries_srws1_led_all_get_brightness(struct led_classdev *led_cdev) | |
161 | { | |
162 | struct device *dev = led_cdev->dev->parent; | |
163 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
164 | struct steelseries_srws1_data *drv_data; | |
165 | ||
166 | drv_data = hid_get_drvdata(hid); | |
167 | ||
168 | if (!drv_data) { | |
169 | hid_err(hid, "Device data not found."); | |
170 | return LED_OFF; | |
171 | } | |
172 | ||
173 | return (drv_data->led_state >> SRWS1_NUMBER_LEDS) ? LED_FULL : LED_OFF; | |
174 | } | |
175 | ||
2e2daff3 SW |
176 | static void steelseries_srws1_led_set_brightness(struct led_classdev *led_cdev, |
177 | enum led_brightness value) | |
178 | { | |
179 | struct device *dev = led_cdev->dev->parent; | |
180 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
181 | struct steelseries_srws1_data *drv_data = hid_get_drvdata(hid); | |
182 | int i, state = 0; | |
183 | ||
184 | if (!drv_data) { | |
185 | hid_err(hid, "Device data not found."); | |
186 | return; | |
187 | } | |
188 | ||
189 | for (i = 0; i < SRWS1_NUMBER_LEDS; i++) { | |
190 | if (led_cdev != drv_data->led[i]) | |
191 | continue; | |
192 | ||
193 | state = (drv_data->led_state >> i) & 1; | |
194 | if (value == LED_OFF && state) { | |
195 | drv_data->led_state &= ~(1 << i); | |
196 | steelseries_srws1_set_leds(hid, drv_data->led_state); | |
197 | } else if (value != LED_OFF && !state) { | |
198 | drv_data->led_state |= 1 << i; | |
199 | steelseries_srws1_set_leds(hid, drv_data->led_state); | |
200 | } | |
201 | break; | |
202 | } | |
203 | } | |
204 | ||
205 | static enum led_brightness steelseries_srws1_led_get_brightness(struct led_classdev *led_cdev) | |
206 | { | |
207 | struct device *dev = led_cdev->dev->parent; | |
208 | struct hid_device *hid = container_of(dev, struct hid_device, dev); | |
209 | struct steelseries_srws1_data *drv_data; | |
210 | int i, value = 0; | |
211 | ||
212 | drv_data = hid_get_drvdata(hid); | |
213 | ||
214 | if (!drv_data) { | |
215 | hid_err(hid, "Device data not found."); | |
216 | return LED_OFF; | |
217 | } | |
218 | ||
219 | for (i = 0; i < SRWS1_NUMBER_LEDS; i++) | |
220 | if (led_cdev == drv_data->led[i]) { | |
221 | value = (drv_data->led_state >> i) & 1; | |
222 | break; | |
223 | } | |
224 | ||
225 | return value ? LED_FULL : LED_OFF; | |
226 | } | |
227 | ||
228 | static int steelseries_srws1_probe(struct hid_device *hdev, | |
229 | const struct hid_device_id *id) | |
230 | { | |
231 | int ret, i; | |
232 | struct led_classdev *led; | |
233 | size_t name_sz; | |
234 | char *name; | |
235 | ||
236 | struct steelseries_srws1_data *drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL); | |
237 | ||
238 | if (drv_data == NULL) { | |
239 | hid_err(hdev, "can't alloc SRW-S1 memory\n"); | |
240 | return -ENOMEM; | |
241 | } | |
242 | ||
243 | hid_set_drvdata(hdev, drv_data); | |
244 | ||
245 | ret = hid_parse(hdev); | |
246 | if (ret) { | |
247 | hid_err(hdev, "parse failed\n"); | |
248 | goto err_free; | |
249 | } | |
250 | ||
251 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
252 | if (ret) { | |
253 | hid_err(hdev, "hw start failed\n"); | |
254 | goto err_free; | |
255 | } | |
256 | ||
257 | /* register led subsystem */ | |
258 | drv_data->led_state = 0; | |
e25d7805 | 259 | for (i = 0; i < SRWS1_NUMBER_LEDS + 1; i++) |
2e2daff3 SW |
260 | drv_data->led[i] = NULL; |
261 | ||
262 | steelseries_srws1_set_leds(hdev, 0); | |
263 | ||
e25d7805 SW |
264 | name_sz = strlen(hdev->uniq) + 16; |
265 | ||
266 | /* 'ALL', for setting all LEDs simultaneously */ | |
267 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); | |
268 | if (!led) { | |
269 | hid_err(hdev, "can't allocate memory for LED ALL\n"); | |
270 | goto err_led; | |
271 | } | |
272 | ||
273 | name = (void *)(&led[1]); | |
274 | snprintf(name, name_sz, "SRWS1::%s::RPMALL", hdev->uniq); | |
275 | led->name = name; | |
276 | led->brightness = 0; | |
277 | led->max_brightness = 1; | |
278 | led->brightness_get = steelseries_srws1_led_all_get_brightness; | |
279 | led->brightness_set = steelseries_srws1_led_all_set_brightness; | |
280 | ||
281 | drv_data->led[SRWS1_NUMBER_LEDS] = led; | |
282 | ret = led_classdev_register(&hdev->dev, led); | |
283 | if (ret) | |
284 | goto err_led; | |
2e2daff3 | 285 | |
e25d7805 | 286 | /* Each individual LED */ |
2e2daff3 SW |
287 | for (i = 0; i < SRWS1_NUMBER_LEDS; i++) { |
288 | led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL); | |
289 | if (!led) { | |
290 | hid_err(hdev, "can't allocate memory for LED %d\n", i); | |
291 | goto err_led; | |
292 | } | |
293 | ||
294 | name = (void *)(&led[1]); | |
295 | snprintf(name, name_sz, "SRWS1::%s::RPM%d", hdev->uniq, i+1); | |
296 | led->name = name; | |
297 | led->brightness = 0; | |
298 | led->max_brightness = 1; | |
299 | led->brightness_get = steelseries_srws1_led_get_brightness; | |
300 | led->brightness_set = steelseries_srws1_led_set_brightness; | |
301 | ||
302 | drv_data->led[i] = led; | |
303 | ret = led_classdev_register(&hdev->dev, led); | |
304 | ||
305 | if (ret) { | |
306 | hid_err(hdev, "failed to register LED %d. Aborting.\n", i); | |
307 | err_led: | |
308 | /* Deregister all LEDs (if any) */ | |
e25d7805 | 309 | for (i = 0; i < SRWS1_NUMBER_LEDS + 1; i++) { |
2e2daff3 SW |
310 | led = drv_data->led[i]; |
311 | drv_data->led[i] = NULL; | |
312 | if (!led) | |
313 | continue; | |
314 | led_classdev_unregister(led); | |
315 | kfree(led); | |
316 | } | |
317 | goto out; /* but let the driver continue without LEDs */ | |
318 | } | |
319 | } | |
320 | out: | |
321 | return 0; | |
322 | err_free: | |
323 | kfree(drv_data); | |
324 | return ret; | |
325 | } | |
326 | ||
327 | static void steelseries_srws1_remove(struct hid_device *hdev) | |
328 | { | |
329 | int i; | |
330 | struct led_classdev *led; | |
331 | ||
332 | struct steelseries_srws1_data *drv_data = hid_get_drvdata(hdev); | |
333 | ||
334 | if (drv_data) { | |
335 | /* Deregister LEDs (if any) */ | |
e25d7805 | 336 | for (i = 0; i < SRWS1_NUMBER_LEDS + 1; i++) { |
2e2daff3 SW |
337 | led = drv_data->led[i]; |
338 | drv_data->led[i] = NULL; | |
339 | if (!led) | |
340 | continue; | |
341 | led_classdev_unregister(led); | |
342 | kfree(led); | |
343 | } | |
344 | ||
345 | } | |
346 | ||
347 | hid_hw_stop(hdev); | |
348 | kfree(drv_data); | |
349 | return; | |
350 | } | |
351 | #endif | |
352 | ||
75dbb953 SW |
353 | static __u8 *steelseries_srws1_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
354 | unsigned int *rsize) | |
355 | { | |
356 | if (*rsize >= 115 && rdesc[11] == 0x02 && rdesc[13] == 0xc8 | |
357 | && rdesc[29] == 0xbb && rdesc[40] == 0xc5) { | |
358 | hid_info(hdev, "Fixing up Steelseries SRW-S1 report descriptor\n"); | |
5492606d SW |
359 | rdesc = steelseries_srws1_rdesc_fixed; |
360 | *rsize = sizeof(steelseries_srws1_rdesc_fixed); | |
75dbb953 SW |
361 | } |
362 | return rdesc; | |
363 | } | |
364 | ||
365 | static const struct hid_device_id steelseries_srws1_devices[] = { | |
366 | { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) }, | |
367 | { } | |
368 | }; | |
369 | MODULE_DEVICE_TABLE(hid, steelseries_srws1_devices); | |
370 | ||
371 | static struct hid_driver steelseries_srws1_driver = { | |
372 | .name = "steelseries_srws1", | |
373 | .id_table = steelseries_srws1_devices, | |
2e2daff3 SW |
374 | #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) |
375 | .probe = steelseries_srws1_probe, | |
376 | .remove = steelseries_srws1_remove, | |
377 | #endif | |
75dbb953 SW |
378 | .report_fixup = steelseries_srws1_report_fixup |
379 | }; | |
380 | ||
381 | static int __init steelseries_srws1_init(void) | |
382 | { | |
383 | return hid_register_driver(&steelseries_srws1_driver); | |
384 | } | |
385 | ||
386 | static void __exit steelseries_srws1_exit(void) | |
387 | { | |
388 | hid_unregister_driver(&steelseries_srws1_driver); | |
389 | } | |
390 | ||
391 | module_init(steelseries_srws1_init); | |
392 | module_exit(steelseries_srws1_exit); | |
393 | MODULE_LICENSE("GPL"); |