aboutsummaryrefslogtreecommitdiff
path: root/drivers/hid/hid-bigbenff.c
blob: 3f6abd190df43ef17cb6080505fe7761c38324fe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
// SPDX-License-Identifier: GPL-2.0+

/*
 *  LED & force feedback support for BigBen Interactive
 *
 *  0x146b:0x0902 "Bigben Interactive Bigben Game Pad"
 *  "Kid-friendly Wired Controller" PS3OFMINIPAD SONY
 *  sold for use with the PS3
 *
 *  Copyright (c) 2018 Hanno Zulla <kontakt@hanno.de>
 */

#include <linux/input.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/leds.h>
#include <linux/hid.h>

#include "hid-ids.h"


/*
 * The original descriptor for 0x146b:0x0902
 *
 *   0x05, 0x01,        // Usage Page (Generic Desktop Ctrls)
 *   0x09, 0x05,        // Usage (Game Pad)
 *   0xA1, 0x01,        // Collection (Application)
 *   0x15, 0x00,        //   Logical Minimum (0)
 *   0x25, 0x01,        //   Logical Maximum (1)
 *   0x35, 0x00,        //   Physical Minimum (0)
 *   0x45, 0x01,        //   Physical Maximum (1)
 *   0x75, 0x01,        //   Report Size (1)
 *   0x95, 0x0D,        //   Report Count (13)
 *   0x05, 0x09,        //   Usage Page (Button)
 *   0x19, 0x01,        //   Usage Minimum (0x01)
 *   0x29, 0x0D,        //   Usage Maximum (0x0D)
 *   0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
 *   0x95, 0x03,        //   Report Count (3)
 *   0x81, 0x01,        //   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
 *   0x05, 0x01,        //   Usage Page (Generic Desktop Ctrls)
 *   0x25, 0x07,        //   Logical Maximum (7)
 *   0x46, 0x3B, 0x01,  //   Physical Maximum (315)
 *   0x75, 0x04,        //   Report Size (4)
 *   0x95, 0x01,        //   Report Count (1)
 *   0x65, 0x14,        //   Unit (System: English Rotation, Length: Centimeter)
 *   0x09, 0x39,        //   Usage (Hat switch)
 *   0x81, 0x42,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,Null State)
 *   0x65, 0x00,        //   Unit (None)
 *   0x95, 0x01,        //   Report Count (1)
 *   0x81, 0x01,        //   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
 *   0x26, 0xFF, 0x00,  //   Logical Maximum (255)
 *   0x46, 0xFF, 0x00,  //   Physical Maximum (255)
 *   0x09, 0x30,        //   Usage (X)
 *   0x09, 0x31,        //   Usage (Y)
 *   0x09, 0x32,        //   Usage (Z)
 *   0x09, 0x35,        //   Usage (Rz)
 *   0x75, 0x08,        //   Report Size (8)
 *   0x95, 0x04,        //   Report Count (4)
 *   0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
 *   0x06, 0x00, 0xFF,  //   Usage Page (Vendor Defined 0xFF00)
 *   0x09, 0x20,        //   Usage (0x20)
 *   0x09, 0x21,        //   Usage (0x21)
 *   0x09, 0x22,        //   Usage (0x22)
 *   0x09, 0x23,        //   Usage (0x23)
 *   0x09, 0x24,        //   Usage (0x24)
 *   0x09, 0x25,        //   Usage (0x25)
 *   0x09, 0x26,        //   Usage (0x26)
 *   0x09, 0x27,        //   Usage (0x27)
 *   0x09, 0x28,        //   Usage (0x28)
 *   0x09, 0x29,        //   Usage (0x29)
 *   0x09, 0x2A,        //   Usage (0x2A)
 *   0x09, 0x2B,        //   Usage (0x2B)
 *   0x95, 0x0C,        //   Report Count (12)
 *   0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
 *   0x0A, 0x21, 0x26,  //   Usage (0x2621)
 *   0x95, 0x08,        //   Report Count (8)
 *   0xB1, 0x02,        //   Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
 *   0x0A, 0x21, 0x26,  //   Usage (0x2621)
 *   0x91, 0x02,        //   Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
 *   0x26, 0xFF, 0x03,  //   Logical Maximum (1023)
 *   0x46, 0xFF, 0x03,  //   Physical Maximum (1023)
 *   0x09, 0x2C,        //   Usage (0x2C)
 *   0x09, 0x2D,        //   Usage (0x2D)
 *   0x09, 0x2E,        //   Usage (0x2E)
 *   0x09, 0x2F,        //   Usage (0x2F)
 *   0x75, 0x10,        //   Report Size (16)
 *   0x95, 0x04,        //   Report Count (4)
 *   0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
 *   0xC0,              // End Collection
 */

#define PID0902_RDESC_ORIG_SIZE 137

/*
 * The fixed descriptor for 0x146b:0x0902
 *
 * - map buttons according to gamepad.rst
 * - assign right stick from Z/Rz to Rx/Ry
 * - map previously unused analog trigger data to Z/RZ
 * - simplify feature and output descriptor
 */
static __u8 pid0902_rdesc_fixed[] = {
	0x05, 0x01,        /* Usage Page (Generic Desktop Ctrls) */
	0x09, 0x05,        /* Usage (Game Pad) */
	0xA1, 0x01,        /* Collection (Application) */
	0x15, 0x00,        /*   Logical Minimum (0) */
	0x25, 0x01,        /*   Logical Maximum (1) */
	0x35, 0x00,        /*   Physical Minimum (0) */
	0x45, 0x01,        /*   Physical Maximum (1) */
	0x75, 0x01,        /*   Report Size (1) */
	0x95, 0x0D,        /*   Report Count (13) */
	0x05, 0x09,        /*   Usage Page (Button) */
	0x09, 0x05,        /*   Usage (BTN_WEST) */
	0x09, 0x01,        /*   Usage (BTN_SOUTH) */
	0x09, 0x02,        /*   Usage (BTN_EAST) */
	0x09, 0x04,        /*   Usage (BTN_NORTH) */
	0x09, 0x07,        /*   Usage (BTN_TL) */
	0x09, 0x08,        /*   Usage (BTN_TR) */
	0x09, 0x09,        /*   Usage (BTN_TL2) */
	0x09, 0x0A,        /*   Usage (BTN_TR2) */
	0x09, 0x0B,        /*   Usage (BTN_SELECT) */
	0x09, 0x0C,        /*   Usage (BTN_START) */
	0x09, 0x0E,        /*   Usage (BTN_THUMBL) */
	0x09, 0x0F,        /*   Usage (BTN_THUMBR) */
	0x09, 0x0D,        /*   Usage (BTN_MODE) */
	0x81, 0x02,        /*   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
	0x75, 0x01,        /*   Report Size (1) */
	0x95, 0x03,        /*   Report Count (3) */
	0x81, 0x01,        /*   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
	0x05, 0x01,        /*   Usage Page (Generic Desktop Ctrls) */
	0x25, 0x07,        /*   Logical Maximum (7) */
	0x46, 0x3B, 0x01,  /*   Physical Maximum (315) */
	0x75, 0x04,        /*   Report Size (4) */
	0x95, 0x01,        /*   Report Count (1) */
	0x65, 0x14,        /*   Unit (System: English Rotation, Length: Centimeter) */
	0x09, 0x39,        /*   Usage (Hat switch) */
	0x81, 0x42,        /*   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,Null State) */
	0x65, 0x00,        /*   Unit (None) */
	0x95, 0x01,        /*   Report Count (1) */
	0x81, 0x01,        /*   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
	0x26, 0xFF, 0x00,  /*   Logical Maximum (255) */
	0x46, 0xFF, 0x00,  /*   Physical Maximum (255) */
	0x09, 0x30,        /*   Usage (X) */
	0x09, 0x31,        /*   Usage (Y) */
	0x09, 0x33,        /*   Usage (Rx) */
	0x09, 0x34,        /*   Usage (Ry) */
	0x75, 0x08,        /*   Report Size (8) */
	0x95, 0x04,        /*   Report Count (4) */
	0x81, 0x02,        /*   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
	0x95, 0x0A,        /*   Report Count (10) */
	0x81, 0x01,        /*   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
	0x05, 0x01,        /*   Usage Page (Generic Desktop Ctrls) */
	0x26, 0xFF, 0x00,  /*   Logical Maximum (255) */
	0x46, 0xFF, 0x00,  /*   Physical Maximum (255) */
	0x09, 0x32,        /*   Usage (Z) */
	0x09, 0x35,        /*   Usage (Rz) */
	0x95, 0x02,        /*   Report Count (2) */
	0x81, 0x02,        /*   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
	0x95, 0x08,        /*   Report Count (8) */
	0x81, 0x01,        /*   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
	0x06, 0x00, 0xFF,  /*   Usage Page (Vendor Defined 0xFF00) */
	0xB1, 0x02,        /*   Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile) */
	0x0A, 0x21, 0x26,  /*   Usage (0x2621) */
	0x95, 0x08,        /*   Report Count (8) */
	0x91, 0x02,        /*   Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile) */
	0x0A, 0x21, 0x26,  /*   Usage (0x2621) */
	0x95, 0x08,        /*   Report Count (8) */
	0x81, 0x02,        /*   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
	0xC0,              /* End Collection */
};

#define NUM_LEDS 4

struct bigben_device {
	struct hid_device *hid;
	struct hid_report *report;
	u8 led_state;         /* LED1 = 1 .. LED4 = 8 */
	u8 right_motor_on;    /* right motor off/on 0/1 */
	u8 left_motor_force;  /* left motor force 0-255 */
	struct led_classdev *leds[NUM_LEDS];
	bool work_led;
	bool work_ff;
	struct work_struct worker;
};


static void bigben_worker(struct work_struct *work)
{
	struct bigben_device *bigben = container_of(work,
		struct bigben_device, worker);
	struct hid_field *report_field = bigben->report->field[0];

	if (bigben->work_led) {
		bigben->work_led = false;
		report_field->value[0] = 0x01; /* 1 = led message */
		report_field->value[1] = 0x08; /* reserved value, always 8 */
		report_field->value[2] = bigben->led_state;
		report_field->value[3] = 0x00; /* padding */
		report_field->value[4] = 0x00; /* padding */
		report_field->value[5] = 0x00; /* padding */
		report_field->value[6] = 0x00; /* padding */
		report_field->value[7] = 0x00; /* padding */
		hid_hw_request(bigben->hid, bigben->report, HID_REQ_SET_REPORT);
	}

	if (bigben->work_ff) {
		bigben->work_ff = false;
		report_field->value[0] = 0x02; /* 2 = rumble effect message */
		report_field->value[1] = 0x08; /* reserved value, always 8 */
		report_field->value[2] = bigben->right_motor_on;
		report_field->value[3] = bigben->left_motor_force;
		report_field->value[4] = 0xff; /* duration 0-254 (255 = nonstop) */
		report_field->value[5] = 0x00; /* padding */
		report_field->value[6] = 0x00; /* padding */
		report_field->value[7] = 0x00; /* padding */
		hid_hw_request(bigben->hid, bigben->report, HID_REQ_SET_REPORT);
	}
}

static int hid_bigben_play_effect(struct input_dev *dev, void *data,
			 struct ff_effect *effect)
{
	struct bigben_device *bigben = data;
	u8 right_motor_on;
	u8 left_motor_force;

	if (effect->type != FF_RUMBLE)
		return 0;

	right_motor_on   = effect->u.rumble.weak_magnitude ? 1 : 0;
	left_motor_force = effect->u.rumble.strong_magnitude / 256;

	if (right_motor_on != bigben->right_motor_on ||
			left_motor_force != bigben->left_motor_force) {
		bigben->right_motor_on   = right_motor_on;
		bigben->left_motor_force = left_motor_force;
		bigben->work_ff = true;
		schedule_work(&bigben->worker);
	}

	return 0;
}

static void bigben_set_led(struct led_classdev *led,
	enum led_brightness value)
{
	struct device *dev = led->dev->parent;
	struct hid_device *hid = to_hid_device(dev);
	struct bigben_device *bigben = hid_get_drvdata(hid);
	int n;
	bool work;

	if (!bigben) {
		hid_err(hid, "no device data\n");
		return;
	}

	for (n = 0; n < NUM_LEDS; n++) {
		if (led == bigben->leds[n]) {
			if (value == LED_OFF) {
				work = (bigben->led_state & BIT(n));
				bigben->led_state &= ~BIT(n);
			} else {
				work = !(bigben->led_state & BIT(n));
				bigben->led_state |= BIT(n);
			}

			if (work) {
				bigben->work_led = true;
				schedule_work(&bigben->worker);
			}
			return;
		}
	}
}

static enum led_brightness bigben_get_led(struct led_classdev *led)
{
	struct device *dev = led->dev->parent;
	struct hid_device *hid = to_hid_device(dev);
	struct bigben_device *bigben = hid_get_drvdata(hid);
	int n;

	if (!bigben) {
		hid_err(hid, "no device data\n");
		return LED_OFF;
	}

	for (n = 0; n < NUM_LEDS; n++) {
		if (led == bigben->leds[n])
			return (bigben->led_state & BIT(n)) ? LED_ON : LED_OFF;
	}

	return LED_OFF;
}

static void bigben_remove(struct hid_device *hid)
{
	struct bigben_device *bigben = hid_get_drvdata(hid);

	cancel_work_sync(&bigben->worker);
	hid_hw_close(hid);
	hid_hw_stop(hid);
}

static int bigben_probe(struct hid_device *hid,
	const struct hid_device_id *id)
{
	struct bigben_device *bigben;
	struct hid_input *hidinput;
	struct list_head *report_list;
	struct led_classdev *led;
	char *name;
	size_t name_sz;
	int n, error;

	bigben = devm_kzalloc(&hid->dev, sizeof(*bigben), GFP_KERNEL);
	if (!bigben)
		return -ENOMEM;
	hid_set_drvdata(hid, bigben);
	bigben->hid = hid;

	error = hid_parse(hid);
	if (error) {
		hid_err(hid, "parse failed\n");
		return error;
	}

	error = hid_hw_start(hid, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
	if (error) {
		hid_err(hid, "hw start failed\n");
		return error;
	}

	report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
	bigben->report = list_entry(report_list->next,
		struct hid_report, list);

	hidinput = list_first_entry(&hid->inputs, struct hid_input, list);
	set_bit(FF_RUMBLE, hidinput->input->ffbit);

	INIT_WORK(&bigben->worker, bigben_worker);

	error = input_ff_create_memless(hidinput->input, bigben,
		hid_bigben_play_effect);
	if (error)
		return error;

	name_sz = strlen(dev_name(&hid->dev)) + strlen(":red:bigben#") + 1;

	for (n = 0; n < NUM_LEDS; n++) {
		led = devm_kzalloc(
			&hid->dev,
			sizeof(struct led_classdev) + name_sz,
			GFP_KERNEL
		);
		if (!led)
			return -ENOMEM;
		name = (void *)(&led[1]);
		snprintf(name, name_sz,
			"%s:red:bigben%d",
			dev_name(&hid->dev), n + 1
		);
		led->name = name;
		led->brightness = (n == 0) ? LED_ON : LED_OFF;
		led->max_brightness = 1;
		led->brightness_get = bigben_get_led;
		led->brightness_set = bigben_set_led;
		bigben->leds[n] = led;
		error = devm_led_classdev_register(&hid->dev, led);
		if (error)
			return error;
	}

	/* initial state: LED1 is on, no rumble effect */
	bigben->led_state = BIT(0);
	bigben->right_motor_on = 0;
	bigben->left_motor_force = 0;
	bigben->work_led = true;
	bigben->work_ff = true;
	schedule_work(&bigben->worker);

	hid_info(hid, "LED and force feedback support for BigBen gamepad\n");

	return 0;
}

static __u8 *bigben_report_fixup(struct hid_device *hid, __u8 *rdesc,
	unsigned int *rsize)
{
	if (*rsize == PID0902_RDESC_ORIG_SIZE) {
		rdesc = pid0902_rdesc_fixed;
		*rsize = sizeof(pid0902_rdesc_fixed);
	} else
		hid_warn(hid, "unexpected rdesc, please submit for review\n");
	return rdesc;
}

static const struct hid_device_id bigben_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_BIGBEN, USB_DEVICE_ID_BIGBEN_PS3OFMINIPAD) },
	{ }
};
MODULE_DEVICE_TABLE(hid, bigben_devices);

static struct hid_driver bigben_driver = {
	.name = "bigben",
	.id_table = bigben_devices,
	.probe = bigben_probe,
	.report_fixup = bigben_report_fixup,
	.remove = bigben_remove,
};
module_hid_driver(bigben_driver);

MODULE_LICENSE("GPL");