xref: /openbmc/linux/drivers/hid/hid-steelseries.c (revision 6c667ef6)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  HID driver for Steelseries devices
4  *
5  *  Copyright (c) 2013 Simon Wood
6  *  Copyright (c) 2023 Bastien Nocera
7  */
8 
9 /*
10  */
11 
12 #include <linux/device.h>
13 #include <linux/hid.h>
14 #include <linux/module.h>
15 #include <linux/usb.h>
16 #include <linux/leds.h>
17 
18 #include "hid-ids.h"
19 
20 #define STEELSERIES_SRWS1		BIT(0)
21 #define STEELSERIES_ARCTIS_1		BIT(1)
22 
23 struct steelseries_device {
24 	struct hid_device *hdev;
25 	unsigned long quirks;
26 
27 	struct delayed_work battery_work;
28 	spinlock_t lock;
29 	bool removed;
30 
31 	struct power_supply_desc battery_desc;
32 	struct power_supply *battery;
33 	uint8_t battery_capacity;
34 	bool headset_connected;
35 };
36 
37 #if IS_BUILTIN(CONFIG_LEDS_CLASS) || \
38     (IS_MODULE(CONFIG_LEDS_CLASS) && IS_MODULE(CONFIG_HID_STEELSERIES))
39 #define SRWS1_NUMBER_LEDS 15
40 struct steelseries_srws1_data {
41 	__u16 led_state;
42 	/* the last element is used for setting all leds simultaneously */
43 	struct led_classdev *led[SRWS1_NUMBER_LEDS + 1];
44 };
45 #endif
46 
47 /* Fixed report descriptor for Steelseries SRW-S1 wheel controller
48  *
49  * The original descriptor hides the sensitivity and assists dials
50  * a custom vendor usage page. This inserts a patch to make them
51  * appear in the 'Generic Desktop' usage.
52  */
53 
54 static __u8 steelseries_srws1_rdesc_fixed[] = {
55 0x05, 0x01,         /*  Usage Page (Desktop)                */
56 0x09, 0x08,         /*  Usage (MultiAxis), Changed          */
57 0xA1, 0x01,         /*  Collection (Application),           */
58 0xA1, 0x02,         /*      Collection (Logical),           */
59 0x95, 0x01,         /*          Report Count (1),           */
60 0x05, 0x01,         /* Changed  Usage Page (Desktop),       */
61 0x09, 0x30,         /* Changed  Usage (X),                  */
62 0x16, 0xF8, 0xF8,   /*          Logical Minimum (-1800),    */
63 0x26, 0x08, 0x07,   /*          Logical Maximum (1800),     */
64 0x65, 0x14,         /*          Unit (Degrees),             */
65 0x55, 0x0F,         /*          Unit Exponent (15),         */
66 0x75, 0x10,         /*          Report Size (16),           */
67 0x81, 0x02,         /*          Input (Variable),           */
68 0x09, 0x31,         /* Changed  Usage (Y),                  */
69 0x15, 0x00,         /*          Logical Minimum (0),        */
70 0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
71 0x75, 0x0C,         /*          Report Size (12),           */
72 0x81, 0x02,         /*          Input (Variable),           */
73 0x09, 0x32,         /* Changed  Usage (Z),                  */
74 0x15, 0x00,         /*          Logical Minimum (0),        */
75 0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
76 0x75, 0x0C,         /*          Report Size (12),           */
77 0x81, 0x02,         /*          Input (Variable),           */
78 0x05, 0x01,         /*          Usage Page (Desktop),       */
79 0x09, 0x39,         /*          Usage (Hat Switch),         */
80 0x25, 0x07,         /*          Logical Maximum (7),        */
81 0x35, 0x00,         /*          Physical Minimum (0),       */
82 0x46, 0x3B, 0x01,   /*          Physical Maximum (315),     */
83 0x65, 0x14,         /*          Unit (Degrees),             */
84 0x75, 0x04,         /*          Report Size (4),            */
85 0x95, 0x01,         /*          Report Count (1),           */
86 0x81, 0x02,         /*          Input (Variable),           */
87 0x25, 0x01,         /*          Logical Maximum (1),        */
88 0x45, 0x01,         /*          Physical Maximum (1),       */
89 0x65, 0x00,         /*          Unit,                       */
90 0x75, 0x01,         /*          Report Size (1),            */
91 0x95, 0x03,         /*          Report Count (3),           */
92 0x81, 0x01,         /*          Input (Constant),           */
93 0x05, 0x09,         /*          Usage Page (Button),        */
94 0x19, 0x01,         /*          Usage Minimum (01h),        */
95 0x29, 0x11,         /*          Usage Maximum (11h),        */
96 0x95, 0x11,         /*          Report Count (17),          */
97 0x81, 0x02,         /*          Input (Variable),           */
98                     /*   ---- Dial patch starts here ----   */
99 0x05, 0x01,         /*          Usage Page (Desktop),       */
100 0x09, 0x33,         /*          Usage (RX),                 */
101 0x75, 0x04,         /*          Report Size (4),            */
102 0x95, 0x02,         /*          Report Count (2),           */
103 0x15, 0x00,         /*          Logical Minimum (0),        */
104 0x25, 0x0b,         /*          Logical Maximum (b),        */
105 0x81, 0x02,         /*          Input (Variable),           */
106 0x09, 0x35,         /*          Usage (RZ),                 */
107 0x75, 0x04,         /*          Report Size (4),            */
108 0x95, 0x01,         /*          Report Count (1),           */
109 0x25, 0x03,         /*          Logical Maximum (3),        */
110 0x81, 0x02,         /*          Input (Variable),           */
111                     /*    ---- Dial patch ends here ----    */
112 0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
113 0x09, 0x01,         /*          Usage (01h),                */
114 0x75, 0x04,         /* Changed  Report Size (4),            */
115 0x95, 0x0D,         /* Changed  Report Count (13),          */
116 0x81, 0x02,         /*          Input (Variable),           */
117 0xC0,               /*      End Collection,                 */
118 0xA1, 0x02,         /*      Collection (Logical),           */
119 0x09, 0x02,         /*          Usage (02h),                */
120 0x75, 0x08,         /*          Report Size (8),            */
121 0x95, 0x10,         /*          Report Count (16),          */
122 0x91, 0x02,         /*          Output (Variable),          */
123 0xC0,               /*      End Collection,                 */
124 0xC0                /*  End Collection                      */
125 };
126 
127 #if IS_BUILTIN(CONFIG_LEDS_CLASS) || \
128     (IS_MODULE(CONFIG_LEDS_CLASS) && IS_MODULE(CONFIG_HID_STEELSERIES))
steelseries_srws1_set_leds(struct hid_device * hdev,__u16 leds)129 static void steelseries_srws1_set_leds(struct hid_device *hdev, __u16 leds)
130 {
131 	struct list_head *report_list = &hdev->report_enum[HID_OUTPUT_REPORT].report_list;
132 	struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
133 	__s32 *value = report->field[0]->value;
134 
135 	value[0] = 0x40;
136 	value[1] = leds & 0xFF;
137 	value[2] = leds >> 8;
138 	value[3] = 0x00;
139 	value[4] = 0x00;
140 	value[5] = 0x00;
141 	value[6] = 0x00;
142 	value[7] = 0x00;
143 	value[8] = 0x00;
144 	value[9] = 0x00;
145 	value[10] = 0x00;
146 	value[11] = 0x00;
147 	value[12] = 0x00;
148 	value[13] = 0x00;
149 	value[14] = 0x00;
150 	value[15] = 0x00;
151 
152 	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
153 
154 	/* Note: LED change does not show on device until the device is read/polled */
155 }
156 
steelseries_srws1_led_all_set_brightness(struct led_classdev * led_cdev,enum led_brightness value)157 static void steelseries_srws1_led_all_set_brightness(struct led_classdev *led_cdev,
158 			enum led_brightness value)
159 {
160 	struct device *dev = led_cdev->dev->parent;
161 	struct hid_device *hid = to_hid_device(dev);
162 	struct steelseries_srws1_data *drv_data = hid_get_drvdata(hid);
163 
164 	if (!drv_data) {
165 		hid_err(hid, "Device data not found.");
166 		return;
167 	}
168 
169 	if (value == LED_OFF)
170 		drv_data->led_state = 0;
171 	else
172 		drv_data->led_state = (1 << (SRWS1_NUMBER_LEDS + 1)) - 1;
173 
174 	steelseries_srws1_set_leds(hid, drv_data->led_state);
175 }
176 
steelseries_srws1_led_all_get_brightness(struct led_classdev * led_cdev)177 static enum led_brightness steelseries_srws1_led_all_get_brightness(struct led_classdev *led_cdev)
178 {
179 	struct device *dev = led_cdev->dev->parent;
180 	struct hid_device *hid = to_hid_device(dev);
181 	struct steelseries_srws1_data *drv_data;
182 
183 	drv_data = hid_get_drvdata(hid);
184 
185 	if (!drv_data) {
186 		hid_err(hid, "Device data not found.");
187 		return LED_OFF;
188 	}
189 
190 	return (drv_data->led_state >> SRWS1_NUMBER_LEDS) ? LED_FULL : LED_OFF;
191 }
192 
steelseries_srws1_led_set_brightness(struct led_classdev * led_cdev,enum led_brightness value)193 static void steelseries_srws1_led_set_brightness(struct led_classdev *led_cdev,
194 			enum led_brightness value)
195 {
196 	struct device *dev = led_cdev->dev->parent;
197 	struct hid_device *hid = to_hid_device(dev);
198 	struct steelseries_srws1_data *drv_data = hid_get_drvdata(hid);
199 	int i, state = 0;
200 
201 	if (!drv_data) {
202 		hid_err(hid, "Device data not found.");
203 		return;
204 	}
205 
206 	for (i = 0; i < SRWS1_NUMBER_LEDS; i++) {
207 		if (led_cdev != drv_data->led[i])
208 			continue;
209 
210 		state = (drv_data->led_state >> i) & 1;
211 		if (value == LED_OFF && state) {
212 			drv_data->led_state &= ~(1 << i);
213 			steelseries_srws1_set_leds(hid, drv_data->led_state);
214 		} else if (value != LED_OFF && !state) {
215 			drv_data->led_state |= 1 << i;
216 			steelseries_srws1_set_leds(hid, drv_data->led_state);
217 		}
218 		break;
219 	}
220 }
221 
steelseries_srws1_led_get_brightness(struct led_classdev * led_cdev)222 static enum led_brightness steelseries_srws1_led_get_brightness(struct led_classdev *led_cdev)
223 {
224 	struct device *dev = led_cdev->dev->parent;
225 	struct hid_device *hid = to_hid_device(dev);
226 	struct steelseries_srws1_data *drv_data;
227 	int i, value = 0;
228 
229 	drv_data = hid_get_drvdata(hid);
230 
231 	if (!drv_data) {
232 		hid_err(hid, "Device data not found.");
233 		return LED_OFF;
234 	}
235 
236 	for (i = 0; i < SRWS1_NUMBER_LEDS; i++)
237 		if (led_cdev == drv_data->led[i]) {
238 			value = (drv_data->led_state >> i) & 1;
239 			break;
240 		}
241 
242 	return value ? LED_FULL : LED_OFF;
243 }
244 
steelseries_srws1_probe(struct hid_device * hdev,const struct hid_device_id * id)245 static int steelseries_srws1_probe(struct hid_device *hdev,
246 		const struct hid_device_id *id)
247 {
248 	int ret, i;
249 	struct led_classdev *led;
250 	size_t name_sz;
251 	char *name;
252 
253 	struct steelseries_srws1_data *drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
254 
255 	if (drv_data == NULL) {
256 		hid_err(hdev, "can't alloc SRW-S1 memory\n");
257 		return -ENOMEM;
258 	}
259 
260 	hid_set_drvdata(hdev, drv_data);
261 
262 	ret = hid_parse(hdev);
263 	if (ret) {
264 		hid_err(hdev, "parse failed\n");
265 		goto err_free;
266 	}
267 
268 	if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 0, 0, 16)) {
269 		ret = -ENODEV;
270 		goto err_free;
271 	}
272 
273 	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
274 	if (ret) {
275 		hid_err(hdev, "hw start failed\n");
276 		goto err_free;
277 	}
278 
279 	/* register led subsystem */
280 	drv_data->led_state = 0;
281 	for (i = 0; i < SRWS1_NUMBER_LEDS + 1; i++)
282 		drv_data->led[i] = NULL;
283 
284 	steelseries_srws1_set_leds(hdev, 0);
285 
286 	name_sz = strlen(hdev->uniq) + 16;
287 
288 	/* 'ALL', for setting all LEDs simultaneously */
289 	led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL);
290 	if (!led) {
291 		hid_err(hdev, "can't allocate memory for LED ALL\n");
292 		goto err_led;
293 	}
294 
295 	name = (void *)(&led[1]);
296 	snprintf(name, name_sz, "SRWS1::%s::RPMALL", hdev->uniq);
297 	led->name = name;
298 	led->brightness = 0;
299 	led->max_brightness = 1;
300 	led->brightness_get = steelseries_srws1_led_all_get_brightness;
301 	led->brightness_set = steelseries_srws1_led_all_set_brightness;
302 
303 	drv_data->led[SRWS1_NUMBER_LEDS] = led;
304 	ret = led_classdev_register(&hdev->dev, led);
305 	if (ret)
306 		goto err_led;
307 
308 	/* Each individual LED */
309 	for (i = 0; i < SRWS1_NUMBER_LEDS; i++) {
310 		led = kzalloc(sizeof(struct led_classdev)+name_sz, GFP_KERNEL);
311 		if (!led) {
312 			hid_err(hdev, "can't allocate memory for LED %d\n", i);
313 			goto err_led;
314 		}
315 
316 		name = (void *)(&led[1]);
317 		snprintf(name, name_sz, "SRWS1::%s::RPM%d", hdev->uniq, i+1);
318 		led->name = name;
319 		led->brightness = 0;
320 		led->max_brightness = 1;
321 		led->brightness_get = steelseries_srws1_led_get_brightness;
322 		led->brightness_set = steelseries_srws1_led_set_brightness;
323 
324 		drv_data->led[i] = led;
325 		ret = led_classdev_register(&hdev->dev, led);
326 
327 		if (ret) {
328 			hid_err(hdev, "failed to register LED %d. Aborting.\n", i);
329 err_led:
330 			/* Deregister all LEDs (if any) */
331 			for (i = 0; i < SRWS1_NUMBER_LEDS + 1; i++) {
332 				led = drv_data->led[i];
333 				drv_data->led[i] = NULL;
334 				if (!led)
335 					continue;
336 				led_classdev_unregister(led);
337 				kfree(led);
338 			}
339 			goto out;	/* but let the driver continue without LEDs */
340 		}
341 	}
342 out:
343 	return 0;
344 err_free:
345 	kfree(drv_data);
346 	return ret;
347 }
348 
steelseries_srws1_remove(struct hid_device * hdev)349 static void steelseries_srws1_remove(struct hid_device *hdev)
350 {
351 	int i;
352 	struct led_classdev *led;
353 
354 	struct steelseries_srws1_data *drv_data = hid_get_drvdata(hdev);
355 
356 	if (drv_data) {
357 		/* Deregister LEDs (if any) */
358 		for (i = 0; i < SRWS1_NUMBER_LEDS + 1; i++) {
359 			led = drv_data->led[i];
360 			drv_data->led[i] = NULL;
361 			if (!led)
362 				continue;
363 			led_classdev_unregister(led);
364 			kfree(led);
365 		}
366 
367 	}
368 
369 	hid_hw_stop(hdev);
370 	kfree(drv_data);
371 	return;
372 }
373 #endif
374 
375 #define STEELSERIES_HEADSET_BATTERY_TIMEOUT_MS	3000
376 
377 #define ARCTIS_1_BATTERY_RESPONSE_LEN		8
378 static const char arctis_1_battery_request[] = { 0x06, 0x12 };
379 
steelseries_headset_arctis_1_fetch_battery(struct hid_device * hdev)380 static int steelseries_headset_arctis_1_fetch_battery(struct hid_device *hdev)
381 {
382 	u8 *write_buf;
383 	int ret;
384 
385 	/* Request battery information */
386 	write_buf = kmemdup(arctis_1_battery_request, sizeof(arctis_1_battery_request), GFP_KERNEL);
387 	if (!write_buf)
388 		return -ENOMEM;
389 
390 	ret = hid_hw_raw_request(hdev, arctis_1_battery_request[0],
391 				 write_buf, sizeof(arctis_1_battery_request),
392 				 HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
393 	if (ret < (int)sizeof(arctis_1_battery_request)) {
394 		hid_err(hdev, "hid_hw_raw_request() failed with %d\n", ret);
395 		ret = -ENODATA;
396 	}
397 	kfree(write_buf);
398 	return ret;
399 }
400 
steelseries_headset_fetch_battery(struct hid_device * hdev)401 static void steelseries_headset_fetch_battery(struct hid_device *hdev)
402 {
403 	struct steelseries_device *sd = hid_get_drvdata(hdev);
404 	int ret = 0;
405 
406 	if (sd->quirks & STEELSERIES_ARCTIS_1)
407 		ret = steelseries_headset_arctis_1_fetch_battery(hdev);
408 
409 	if (ret < 0)
410 		hid_dbg(hdev,
411 			"Battery query failed (err: %d)\n", ret);
412 }
413 
steelseries_headset_battery_timer_tick(struct work_struct * work)414 static void steelseries_headset_battery_timer_tick(struct work_struct *work)
415 {
416 	struct steelseries_device *sd = container_of(work,
417 		struct steelseries_device, battery_work.work);
418 	struct hid_device *hdev = sd->hdev;
419 
420 	steelseries_headset_fetch_battery(hdev);
421 }
422 
steelseries_headset_battery_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)423 static int steelseries_headset_battery_get_property(struct power_supply *psy,
424 				enum power_supply_property psp,
425 				union power_supply_propval *val)
426 {
427 	struct steelseries_device *sd = power_supply_get_drvdata(psy);
428 	int ret = 0;
429 
430 	switch (psp) {
431 	case POWER_SUPPLY_PROP_PRESENT:
432 		val->intval = 1;
433 		break;
434 	case POWER_SUPPLY_PROP_STATUS:
435 		val->intval = sd->headset_connected ?
436 			POWER_SUPPLY_STATUS_DISCHARGING :
437 			POWER_SUPPLY_STATUS_UNKNOWN;
438 		break;
439 	case POWER_SUPPLY_PROP_SCOPE:
440 		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
441 		break;
442 	case POWER_SUPPLY_PROP_CAPACITY:
443 		val->intval = sd->battery_capacity;
444 		break;
445 	default:
446 		ret = -EINVAL;
447 		break;
448 	}
449 	return ret;
450 }
451 
452 static void
steelseries_headset_set_wireless_status(struct hid_device * hdev,bool connected)453 steelseries_headset_set_wireless_status(struct hid_device *hdev,
454 					bool connected)
455 {
456 	struct usb_interface *intf;
457 
458 	if (!hid_is_usb(hdev))
459 		return;
460 
461 	intf = to_usb_interface(hdev->dev.parent);
462 	usb_set_wireless_status(intf, connected ?
463 				USB_WIRELESS_STATUS_CONNECTED :
464 				USB_WIRELESS_STATUS_DISCONNECTED);
465 }
466 
467 static enum power_supply_property steelseries_headset_battery_props[] = {
468 	POWER_SUPPLY_PROP_PRESENT,
469 	POWER_SUPPLY_PROP_STATUS,
470 	POWER_SUPPLY_PROP_SCOPE,
471 	POWER_SUPPLY_PROP_CAPACITY,
472 };
473 
steelseries_headset_battery_register(struct steelseries_device * sd)474 static int steelseries_headset_battery_register(struct steelseries_device *sd)
475 {
476 	static atomic_t battery_no = ATOMIC_INIT(0);
477 	struct power_supply_config battery_cfg = { .drv_data = sd, };
478 	unsigned long n;
479 	int ret;
480 
481 	sd->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
482 	sd->battery_desc.properties = steelseries_headset_battery_props;
483 	sd->battery_desc.num_properties = ARRAY_SIZE(steelseries_headset_battery_props);
484 	sd->battery_desc.get_property = steelseries_headset_battery_get_property;
485 	sd->battery_desc.use_for_apm = 0;
486 	n = atomic_inc_return(&battery_no) - 1;
487 	sd->battery_desc.name = devm_kasprintf(&sd->hdev->dev, GFP_KERNEL,
488 						    "steelseries_headset_battery_%ld", n);
489 	if (!sd->battery_desc.name)
490 		return -ENOMEM;
491 
492 	/* avoid the warning of 0% battery while waiting for the first info */
493 	steelseries_headset_set_wireless_status(sd->hdev, false);
494 	sd->battery_capacity = 100;
495 
496 	sd->battery = devm_power_supply_register(&sd->hdev->dev,
497 			&sd->battery_desc, &battery_cfg);
498 	if (IS_ERR(sd->battery)) {
499 		ret = PTR_ERR(sd->battery);
500 		hid_err(sd->hdev,
501 				"%s:power_supply_register failed with error %d\n",
502 				__func__, ret);
503 		return ret;
504 	}
505 	power_supply_powers(sd->battery, &sd->hdev->dev);
506 
507 	INIT_DELAYED_WORK(&sd->battery_work, steelseries_headset_battery_timer_tick);
508 	steelseries_headset_fetch_battery(sd->hdev);
509 
510 	return 0;
511 }
512 
steelseries_probe(struct hid_device * hdev,const struct hid_device_id * id)513 static int steelseries_probe(struct hid_device *hdev, const struct hid_device_id *id)
514 {
515 	struct steelseries_device *sd;
516 	int ret;
517 
518 	sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL);
519 	if (!sd)
520 		return -ENOMEM;
521 	hid_set_drvdata(hdev, sd);
522 	sd->hdev = hdev;
523 	sd->quirks = id->driver_data;
524 
525 	if (sd->quirks & STEELSERIES_SRWS1) {
526 #if IS_BUILTIN(CONFIG_LEDS_CLASS) || \
527     (IS_MODULE(CONFIG_LEDS_CLASS) && IS_MODULE(CONFIG_HID_STEELSERIES))
528 		return steelseries_srws1_probe(hdev, id);
529 #else
530 		return -ENODEV;
531 #endif
532 	}
533 
534 	ret = hid_parse(hdev);
535 	if (ret)
536 		return ret;
537 
538 	spin_lock_init(&sd->lock);
539 
540 	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
541 	if (ret)
542 		return ret;
543 
544 	if (steelseries_headset_battery_register(sd) < 0)
545 		hid_err(sd->hdev,
546 			"Failed to register battery for headset\n");
547 
548 	return ret;
549 }
550 
steelseries_remove(struct hid_device * hdev)551 static void steelseries_remove(struct hid_device *hdev)
552 {
553 	struct steelseries_device *sd = hid_get_drvdata(hdev);
554 	unsigned long flags;
555 
556 	if (sd->quirks & STEELSERIES_SRWS1) {
557 #if IS_BUILTIN(CONFIG_LEDS_CLASS) || \
558     (IS_MODULE(CONFIG_LEDS_CLASS) && IS_MODULE(CONFIG_HID_STEELSERIES))
559 		steelseries_srws1_remove(hdev);
560 #endif
561 		return;
562 	}
563 
564 	spin_lock_irqsave(&sd->lock, flags);
565 	sd->removed = true;
566 	spin_unlock_irqrestore(&sd->lock, flags);
567 
568 	cancel_delayed_work_sync(&sd->battery_work);
569 
570 	hid_hw_stop(hdev);
571 }
572 
steelseries_srws1_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * rsize)573 static __u8 *steelseries_srws1_report_fixup(struct hid_device *hdev, __u8 *rdesc,
574 		unsigned int *rsize)
575 {
576 	if (hdev->vendor != USB_VENDOR_ID_STEELSERIES ||
577 	    hdev->product != USB_DEVICE_ID_STEELSERIES_SRWS1)
578 		return rdesc;
579 
580 	if (*rsize >= 115 && rdesc[11] == 0x02 && rdesc[13] == 0xc8
581 			&& rdesc[29] == 0xbb && rdesc[40] == 0xc5) {
582 		hid_info(hdev, "Fixing up Steelseries SRW-S1 report descriptor\n");
583 		rdesc = steelseries_srws1_rdesc_fixed;
584 		*rsize = sizeof(steelseries_srws1_rdesc_fixed);
585 	}
586 	return rdesc;
587 }
588 
steelseries_headset_raw_event(struct hid_device * hdev,struct hid_report * report,u8 * read_buf,int size)589 static int steelseries_headset_raw_event(struct hid_device *hdev,
590 					struct hid_report *report, u8 *read_buf,
591 					int size)
592 {
593 	struct steelseries_device *sd = hid_get_drvdata(hdev);
594 	int capacity = sd->battery_capacity;
595 	bool connected = sd->headset_connected;
596 	unsigned long flags;
597 
598 	/* Not a headset */
599 	if (sd->quirks & STEELSERIES_SRWS1)
600 		return 0;
601 
602 	if (sd->quirks & STEELSERIES_ARCTIS_1) {
603 		hid_dbg(sd->hdev,
604 			"Parsing raw event for Arctis 1 headset (%*ph)\n", size, read_buf);
605 		if (size < ARCTIS_1_BATTERY_RESPONSE_LEN ||
606 		    memcmp (read_buf, arctis_1_battery_request, sizeof(arctis_1_battery_request)))
607 			return 0;
608 		if (read_buf[2] == 0x01) {
609 			connected = false;
610 			capacity = 100;
611 		} else {
612 			connected = true;
613 			capacity = read_buf[3];
614 		}
615 	}
616 
617 	if (connected != sd->headset_connected) {
618 		hid_dbg(sd->hdev,
619 			"Connected status changed from %sconnected to %sconnected\n",
620 			sd->headset_connected ? "" : "not ",
621 			connected ? "" : "not ");
622 		sd->headset_connected = connected;
623 		steelseries_headset_set_wireless_status(hdev, connected);
624 	}
625 
626 	if (capacity != sd->battery_capacity) {
627 		hid_dbg(sd->hdev,
628 			"Battery capacity changed from %d%% to %d%%\n",
629 			sd->battery_capacity, capacity);
630 		sd->battery_capacity = capacity;
631 		power_supply_changed(sd->battery);
632 	}
633 
634 	spin_lock_irqsave(&sd->lock, flags);
635 	if (!sd->removed)
636 		schedule_delayed_work(&sd->battery_work,
637 				msecs_to_jiffies(STEELSERIES_HEADSET_BATTERY_TIMEOUT_MS));
638 	spin_unlock_irqrestore(&sd->lock, flags);
639 
640 	return 0;
641 }
642 
643 static const struct hid_device_id steelseries_devices[] = {
644 	{ HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1),
645 	  .driver_data = STEELSERIES_SRWS1 },
646 
647 	{ /* SteelSeries Arctis 1 Wireless for XBox */
648 	  HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, 0x12b6),
649 	.driver_data = STEELSERIES_ARCTIS_1 },
650 
651 	{ }
652 };
653 MODULE_DEVICE_TABLE(hid, steelseries_devices);
654 
655 static struct hid_driver steelseries_driver = {
656 	.name = "steelseries",
657 	.id_table = steelseries_devices,
658 	.probe = steelseries_probe,
659 	.remove = steelseries_remove,
660 	.report_fixup = steelseries_srws1_report_fixup,
661 	.raw_event = steelseries_headset_raw_event,
662 };
663 
664 module_hid_driver(steelseries_driver);
665 MODULE_LICENSE("GPL");
666 MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>");
667 MODULE_AUTHOR("Simon Wood <simon@mungewell.org>");
668