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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * ati_remote2 - ATI/Philips USB RF remote driver
4 *
5 * Copyright (C) 2005-2008 Ville Syrjala <syrjala@sci.fi>
6 * Copyright (C) 2007-2008 Peter Stokes <linux@dadeos.co.uk>
7 */
8
9#include <linux/usb/input.h>
10#include <linux/slab.h>
11#include <linux/module.h>
12
13#define DRIVER_DESC "ATI/Philips USB RF remote driver"
14
15MODULE_DESCRIPTION(DRIVER_DESC);
16MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");
17MODULE_LICENSE("GPL");
18
19/*
20 * ATI Remote Wonder II Channel Configuration
21 *
22 * The remote control can be assigned one of sixteen "channels" in order to facilitate
23 * the use of multiple remote controls within range of each other.
24 * A remote's "channel" may be altered by pressing and holding the "PC" button for
25 * approximately 3 seconds, after which the button will slowly flash the count of the
26 * currently configured "channel", using the numeric keypad enter a number between 1 and
27 * 16 and then press the "PC" button again, the button will slowly flash the count of the
28 * newly configured "channel".
29 */
30
31enum {
32 ATI_REMOTE2_MAX_CHANNEL_MASK = 0xFFFF,
33 ATI_REMOTE2_MAX_MODE_MASK = 0x1F,
34};
35
36static int ati_remote2_set_mask(const char *val,
37 const struct kernel_param *kp,
38 unsigned int max)
39{
40 unsigned int mask;
41 int ret;
42
43 if (!val)
44 return -EINVAL;
45
46 ret = kstrtouint(val, 0, &mask);
47 if (ret)
48 return ret;
49
50 if (mask & ~max)
51 return -EINVAL;
52
53 *(unsigned int *)kp->arg = mask;
54
55 return 0;
56}
57
58static int ati_remote2_set_channel_mask(const char *val,
59 const struct kernel_param *kp)
60{
61 pr_debug("%s()\n", __func__);
62
63 return ati_remote2_set_mask(val, kp, ATI_REMOTE2_MAX_CHANNEL_MASK);
64}
65
66static int ati_remote2_get_channel_mask(char *buffer,
67 const struct kernel_param *kp)
68{
69 pr_debug("%s()\n", __func__);
70
71 return sprintf(buffer, "0x%04x\n", *(unsigned int *)kp->arg);
72}
73
74static int ati_remote2_set_mode_mask(const char *val,
75 const struct kernel_param *kp)
76{
77 pr_debug("%s()\n", __func__);
78
79 return ati_remote2_set_mask(val, kp, ATI_REMOTE2_MAX_MODE_MASK);
80}
81
82static int ati_remote2_get_mode_mask(char *buffer,
83 const struct kernel_param *kp)
84{
85 pr_debug("%s()\n", __func__);
86
87 return sprintf(buffer, "0x%02x\n", *(unsigned int *)kp->arg);
88}
89
90static unsigned int channel_mask = ATI_REMOTE2_MAX_CHANNEL_MASK;
91#define param_check_channel_mask(name, p) __param_check(name, p, unsigned int)
92static const struct kernel_param_ops param_ops_channel_mask = {
93 .set = ati_remote2_set_channel_mask,
94 .get = ati_remote2_get_channel_mask,
95};
96module_param(channel_mask, channel_mask, 0644);
97MODULE_PARM_DESC(channel_mask, "Bitmask of channels to accept <15:Channel16>...<1:Channel2><0:Channel1>");
98
99static unsigned int mode_mask = ATI_REMOTE2_MAX_MODE_MASK;
100#define param_check_mode_mask(name, p) __param_check(name, p, unsigned int)
101static const struct kernel_param_ops param_ops_mode_mask = {
102 .set = ati_remote2_set_mode_mask,
103 .get = ati_remote2_get_mode_mask,
104};
105module_param(mode_mask, mode_mask, 0644);
106MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>");
107
108static const struct usb_device_id ati_remote2_id_table[] = {
109 { USB_DEVICE(0x0471, 0x0602) }, /* ATI Remote Wonder II */
110 { }
111};
112MODULE_DEVICE_TABLE(usb, ati_remote2_id_table);
113
114static DEFINE_MUTEX(ati_remote2_mutex);
115
116enum {
117 ATI_REMOTE2_OPENED = 0x1,
118 ATI_REMOTE2_SUSPENDED = 0x2,
119};
120
121enum {
122 ATI_REMOTE2_AUX1,
123 ATI_REMOTE2_AUX2,
124 ATI_REMOTE2_AUX3,
125 ATI_REMOTE2_AUX4,
126 ATI_REMOTE2_PC,
127 ATI_REMOTE2_MODES,
128};
129
130static const struct {
131 u8 hw_code;
132 u16 keycode;
133} ati_remote2_key_table[] = {
134 { 0x00, KEY_0 },
135 { 0x01, KEY_1 },
136 { 0x02, KEY_2 },
137 { 0x03, KEY_3 },
138 { 0x04, KEY_4 },
139 { 0x05, KEY_5 },
140 { 0x06, KEY_6 },
141 { 0x07, KEY_7 },
142 { 0x08, KEY_8 },
143 { 0x09, KEY_9 },
144 { 0x0c, KEY_POWER },
145 { 0x0d, KEY_MUTE },
146 { 0x10, KEY_VOLUMEUP },
147 { 0x11, KEY_VOLUMEDOWN },
148 { 0x20, KEY_CHANNELUP },
149 { 0x21, KEY_CHANNELDOWN },
150 { 0x28, KEY_FORWARD },
151 { 0x29, KEY_REWIND },
152 { 0x2c, KEY_PLAY },
153 { 0x30, KEY_PAUSE },
154 { 0x31, KEY_STOP },
155 { 0x37, KEY_RECORD },
156 { 0x38, KEY_DVD },
157 { 0x39, KEY_TV },
158 { 0x3f, KEY_PROG1 }, /* AUX1-AUX4 and PC */
159 { 0x54, KEY_MENU },
160 { 0x58, KEY_UP },
161 { 0x59, KEY_DOWN },
162 { 0x5a, KEY_LEFT },
163 { 0x5b, KEY_RIGHT },
164 { 0x5c, KEY_OK },
165 { 0x78, KEY_A },
166 { 0x79, KEY_B },
167 { 0x7a, KEY_C },
168 { 0x7b, KEY_D },
169 { 0x7c, KEY_E },
170 { 0x7d, KEY_F },
171 { 0x82, KEY_ENTER },
172 { 0x8e, KEY_VENDOR },
173 { 0x96, KEY_COFFEE },
174 { 0xa9, BTN_LEFT },
175 { 0xaa, BTN_RIGHT },
176 { 0xbe, KEY_QUESTION },
177 { 0xd0, KEY_EDIT },
178 { 0xd5, KEY_FRONT },
179 { 0xf9, KEY_INFO },
180};
181
182struct ati_remote2 {
183 struct input_dev *idev;
184 struct usb_device *udev;
185
186 struct usb_interface *intf[2];
187 struct usb_endpoint_descriptor *ep[2];
188 struct urb *urb[2];
189 void *buf[2];
190 dma_addr_t buf_dma[2];
191
192 unsigned long jiffies;
193 int mode;
194
195 char name[64];
196 char phys[64];
197
198 /* Each mode (AUX1-AUX4 and PC) can have an independent keymap. */
199 u16 keycode[ATI_REMOTE2_MODES][ARRAY_SIZE(ati_remote2_key_table)];
200
201 unsigned int flags;
202
203 unsigned int channel_mask;
204 unsigned int mode_mask;
205};
206
207static struct usb_driver ati_remote2_driver;
208
209static int ati_remote2_submit_urbs(struct ati_remote2 *ar2)
210{
211 int r;
212
213 r = usb_submit_urb(ar2->urb[0], GFP_KERNEL);
214 if (r) {
215 dev_err(&ar2->intf[0]->dev,
216 "%s(): usb_submit_urb() = %d\n", __func__, r);
217 return r;
218 }
219 r = usb_submit_urb(ar2->urb[1], GFP_KERNEL);
220 if (r) {
221 usb_kill_urb(ar2->urb[0]);
222 dev_err(&ar2->intf[1]->dev,
223 "%s(): usb_submit_urb() = %d\n", __func__, r);
224 return r;
225 }
226
227 return 0;
228}
229
230static void ati_remote2_kill_urbs(struct ati_remote2 *ar2)
231{
232 usb_kill_urb(ar2->urb[1]);
233 usb_kill_urb(ar2->urb[0]);
234}
235
236static int ati_remote2_open(struct input_dev *idev)
237{
238 struct ati_remote2 *ar2 = input_get_drvdata(idev);
239 int r;
240
241 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
242
243 r = usb_autopm_get_interface(ar2->intf[0]);
244 if (r) {
245 dev_err(&ar2->intf[0]->dev,
246 "%s(): usb_autopm_get_interface() = %d\n", __func__, r);
247 return r;
248 }
249
250 scoped_guard(mutex, &ati_remote2_mutex) {
251 if (!(ar2->flags & ATI_REMOTE2_SUSPENDED)) {
252 r = ati_remote2_submit_urbs(ar2);
253 if (r)
254 break;
255 }
256
257 ar2->flags |= ATI_REMOTE2_OPENED;
258 }
259
260 usb_autopm_put_interface(ar2->intf[0]);
261
262 return r;
263}
264
265static void ati_remote2_close(struct input_dev *idev)
266{
267 struct ati_remote2 *ar2 = input_get_drvdata(idev);
268
269 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
270
271 guard(mutex)(&ati_remote2_mutex);
272
273 if (!(ar2->flags & ATI_REMOTE2_SUSPENDED))
274 ati_remote2_kill_urbs(ar2);
275
276 ar2->flags &= ~ATI_REMOTE2_OPENED;
277}
278
279static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
280{
281 struct input_dev *idev = ar2->idev;
282 u8 *data = ar2->buf[0];
283 int channel, mode;
284
285 channel = data[0] >> 4;
286
287 if (!((1 << channel) & ar2->channel_mask))
288 return;
289
290 mode = data[0] & 0x0F;
291
292 if (mode > ATI_REMOTE2_PC) {
293 dev_err(&ar2->intf[0]->dev,
294 "Unknown mode byte (%02x %02x %02x %02x)\n",
295 data[3], data[2], data[1], data[0]);
296 return;
297 }
298
299 if (!((1 << mode) & ar2->mode_mask))
300 return;
301
302 input_event(idev, EV_REL, REL_X, (s8) data[1]);
303 input_event(idev, EV_REL, REL_Y, (s8) data[2]);
304 input_sync(idev);
305}
306
307static int ati_remote2_lookup(unsigned int hw_code)
308{
309 int i;
310
311 for (i = 0; i < ARRAY_SIZE(ati_remote2_key_table); i++)
312 if (ati_remote2_key_table[i].hw_code == hw_code)
313 return i;
314
315 return -1;
316}
317
318static void ati_remote2_input_key(struct ati_remote2 *ar2)
319{
320 struct input_dev *idev = ar2->idev;
321 u8 *data = ar2->buf[1];
322 int channel, mode, hw_code, index;
323
324 channel = data[0] >> 4;
325
326 if (!((1 << channel) & ar2->channel_mask))
327 return;
328
329 mode = data[0] & 0x0F;
330
331 if (mode > ATI_REMOTE2_PC) {
332 dev_err(&ar2->intf[1]->dev,
333 "Unknown mode byte (%02x %02x %02x %02x)\n",
334 data[3], data[2], data[1], data[0]);
335 return;
336 }
337
338 hw_code = data[2];
339 if (hw_code == 0x3f) {
340 /*
341 * For some incomprehensible reason the mouse pad generates
342 * events which look identical to the events from the last
343 * pressed mode key. Naturally we don't want to generate key
344 * events for the mouse pad so we filter out any subsequent
345 * events from the same mode key.
346 */
347 if (ar2->mode == mode)
348 return;
349
350 if (data[1] == 0)
351 ar2->mode = mode;
352 }
353
354 if (!((1 << mode) & ar2->mode_mask))
355 return;
356
357 index = ati_remote2_lookup(hw_code);
358 if (index < 0) {
359 dev_err(&ar2->intf[1]->dev,
360 "Unknown code byte (%02x %02x %02x %02x)\n",
361 data[3], data[2], data[1], data[0]);
362 return;
363 }
364
365 switch (data[1]) {
366 case 0: /* release */
367 break;
368 case 1: /* press */
369 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_DELAY]);
370 break;
371 case 2: /* repeat */
372
373 /* No repeat for mouse buttons. */
374 if (ar2->keycode[mode][index] == BTN_LEFT ||
375 ar2->keycode[mode][index] == BTN_RIGHT)
376 return;
377
378 if (!time_after_eq(jiffies, ar2->jiffies))
379 return;
380
381 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_PERIOD]);
382 break;
383 default:
384 dev_err(&ar2->intf[1]->dev,
385 "Unknown state byte (%02x %02x %02x %02x)\n",
386 data[3], data[2], data[1], data[0]);
387 return;
388 }
389
390 input_event(idev, EV_KEY, ar2->keycode[mode][index], data[1]);
391 input_sync(idev);
392}
393
394static void ati_remote2_complete_mouse(struct urb *urb)
395{
396 struct ati_remote2 *ar2 = urb->context;
397 int r;
398
399 switch (urb->status) {
400 case 0:
401 usb_mark_last_busy(ar2->udev);
402 ati_remote2_input_mouse(ar2);
403 break;
404 case -ENOENT:
405 case -EILSEQ:
406 case -ECONNRESET:
407 case -ESHUTDOWN:
408 dev_dbg(&ar2->intf[0]->dev,
409 "%s(): urb status = %d\n", __func__, urb->status);
410 return;
411 default:
412 usb_mark_last_busy(ar2->udev);
413 dev_err(&ar2->intf[0]->dev,
414 "%s(): urb status = %d\n", __func__, urb->status);
415 }
416
417 r = usb_submit_urb(urb, GFP_ATOMIC);
418 if (r)
419 dev_err(&ar2->intf[0]->dev,
420 "%s(): usb_submit_urb() = %d\n", __func__, r);
421}
422
423static void ati_remote2_complete_key(struct urb *urb)
424{
425 struct ati_remote2 *ar2 = urb->context;
426 int r;
427
428 switch (urb->status) {
429 case 0:
430 usb_mark_last_busy(ar2->udev);
431 ati_remote2_input_key(ar2);
432 break;
433 case -ENOENT:
434 case -EILSEQ:
435 case -ECONNRESET:
436 case -ESHUTDOWN:
437 dev_dbg(&ar2->intf[1]->dev,
438 "%s(): urb status = %d\n", __func__, urb->status);
439 return;
440 default:
441 usb_mark_last_busy(ar2->udev);
442 dev_err(&ar2->intf[1]->dev,
443 "%s(): urb status = %d\n", __func__, urb->status);
444 }
445
446 r = usb_submit_urb(urb, GFP_ATOMIC);
447 if (r)
448 dev_err(&ar2->intf[1]->dev,
449 "%s(): usb_submit_urb() = %d\n", __func__, r);
450}
451
452static int ati_remote2_getkeycode(struct input_dev *idev,
453 struct input_keymap_entry *ke)
454{
455 struct ati_remote2 *ar2 = input_get_drvdata(idev);
456 unsigned int mode;
457 int offset;
458 unsigned int index;
459 unsigned int scancode;
460
461 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
462 index = ke->index;
463 if (index >= ATI_REMOTE2_MODES *
464 ARRAY_SIZE(ati_remote2_key_table))
465 return -EINVAL;
466
467 mode = ke->index / ARRAY_SIZE(ati_remote2_key_table);
468 offset = ke->index % ARRAY_SIZE(ati_remote2_key_table);
469 scancode = (mode << 8) + ati_remote2_key_table[offset].hw_code;
470 } else {
471 if (input_scancode_to_scalar(ke, &scancode))
472 return -EINVAL;
473
474 mode = scancode >> 8;
475 if (mode > ATI_REMOTE2_PC)
476 return -EINVAL;
477
478 offset = ati_remote2_lookup(scancode & 0xff);
479 if (offset < 0)
480 return -EINVAL;
481
482 index = mode * ARRAY_SIZE(ati_remote2_key_table) + offset;
483 }
484
485 ke->keycode = ar2->keycode[mode][offset];
486 ke->len = sizeof(scancode);
487 memcpy(&ke->scancode, &scancode, sizeof(scancode));
488 ke->index = index;
489
490 return 0;
491}
492
493static int ati_remote2_setkeycode(struct input_dev *idev,
494 const struct input_keymap_entry *ke,
495 unsigned int *old_keycode)
496{
497 struct ati_remote2 *ar2 = input_get_drvdata(idev);
498 unsigned int mode;
499 int offset;
500 unsigned int index;
501 unsigned int scancode;
502
503 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
504 if (ke->index >= ATI_REMOTE2_MODES *
505 ARRAY_SIZE(ati_remote2_key_table))
506 return -EINVAL;
507
508 mode = ke->index / ARRAY_SIZE(ati_remote2_key_table);
509 offset = ke->index % ARRAY_SIZE(ati_remote2_key_table);
510 } else {
511 if (input_scancode_to_scalar(ke, &scancode))
512 return -EINVAL;
513
514 mode = scancode >> 8;
515 if (mode > ATI_REMOTE2_PC)
516 return -EINVAL;
517
518 offset = ati_remote2_lookup(scancode & 0xff);
519 if (offset < 0)
520 return -EINVAL;
521 }
522
523 *old_keycode = ar2->keycode[mode][offset];
524 ar2->keycode[mode][offset] = ke->keycode;
525 __set_bit(ke->keycode, idev->keybit);
526
527 for (mode = 0; mode < ATI_REMOTE2_MODES; mode++) {
528 for (index = 0; index < ARRAY_SIZE(ati_remote2_key_table); index++) {
529 if (ar2->keycode[mode][index] == *old_keycode)
530 return 0;
531 }
532 }
533
534 __clear_bit(*old_keycode, idev->keybit);
535
536 return 0;
537}
538
539static int ati_remote2_input_init(struct ati_remote2 *ar2)
540{
541 struct input_dev *idev;
542 int index, mode, retval;
543
544 idev = input_allocate_device();
545 if (!idev)
546 return -ENOMEM;
547
548 ar2->idev = idev;
549 input_set_drvdata(idev, ar2);
550
551 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL);
552 idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
553 BIT_MASK(BTN_RIGHT);
554 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
555
556 for (mode = 0; mode < ATI_REMOTE2_MODES; mode++) {
557 for (index = 0; index < ARRAY_SIZE(ati_remote2_key_table); index++) {
558 ar2->keycode[mode][index] = ati_remote2_key_table[index].keycode;
559 __set_bit(ar2->keycode[mode][index], idev->keybit);
560 }
561 }
562
563 /* AUX1-AUX4 and PC generate the same scancode. */
564 index = ati_remote2_lookup(0x3f);
565 ar2->keycode[ATI_REMOTE2_AUX1][index] = KEY_PROG1;
566 ar2->keycode[ATI_REMOTE2_AUX2][index] = KEY_PROG2;
567 ar2->keycode[ATI_REMOTE2_AUX3][index] = KEY_PROG3;
568 ar2->keycode[ATI_REMOTE2_AUX4][index] = KEY_PROG4;
569 ar2->keycode[ATI_REMOTE2_PC][index] = KEY_PC;
570 __set_bit(KEY_PROG1, idev->keybit);
571 __set_bit(KEY_PROG2, idev->keybit);
572 __set_bit(KEY_PROG3, idev->keybit);
573 __set_bit(KEY_PROG4, idev->keybit);
574 __set_bit(KEY_PC, idev->keybit);
575
576 idev->rep[REP_DELAY] = 250;
577 idev->rep[REP_PERIOD] = 33;
578
579 idev->open = ati_remote2_open;
580 idev->close = ati_remote2_close;
581
582 idev->getkeycode = ati_remote2_getkeycode;
583 idev->setkeycode = ati_remote2_setkeycode;
584
585 idev->name = ar2->name;
586 idev->phys = ar2->phys;
587
588 usb_to_input_id(ar2->udev, &idev->id);
589 idev->dev.parent = &ar2->udev->dev;
590
591 retval = input_register_device(idev);
592 if (retval)
593 input_free_device(idev);
594
595 return retval;
596}
597
598static int ati_remote2_urb_init(struct ati_remote2 *ar2)
599{
600 struct usb_device *udev = ar2->udev;
601 int i, pipe, maxp;
602
603 for (i = 0; i < 2; i++) {
604 ar2->buf[i] = usb_alloc_coherent(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]);
605 if (!ar2->buf[i])
606 return -ENOMEM;
607
608 ar2->urb[i] = usb_alloc_urb(0, GFP_KERNEL);
609 if (!ar2->urb[i])
610 return -ENOMEM;
611
612 pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
613 maxp = usb_maxpacket(udev, pipe);
614 maxp = maxp > 4 ? 4 : maxp;
615
616 usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
617 i ? ati_remote2_complete_key : ati_remote2_complete_mouse,
618 ar2, ar2->ep[i]->bInterval);
619 ar2->urb[i]->transfer_dma = ar2->buf_dma[i];
620 ar2->urb[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
621 }
622
623 return 0;
624}
625
626static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
627{
628 int i;
629
630 for (i = 0; i < 2; i++) {
631 usb_free_urb(ar2->urb[i]);
632 usb_free_coherent(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]);
633 }
634}
635
636static int ati_remote2_setup(struct ati_remote2 *ar2, unsigned int ch_mask)
637{
638 int r, i, channel;
639
640 /*
641 * Configure receiver to only accept input from remote "channel"
642 * channel == 0 -> Accept input from any remote channel
643 * channel == 1 -> Only accept input from remote channel 1
644 * channel == 2 -> Only accept input from remote channel 2
645 * ...
646 * channel == 16 -> Only accept input from remote channel 16
647 */
648
649 channel = 0;
650 for (i = 0; i < 16; i++) {
651 if ((1 << i) & ch_mask) {
652 if (!(~(1 << i) & ch_mask))
653 channel = i + 1;
654 break;
655 }
656 }
657
658 r = usb_control_msg(ar2->udev, usb_sndctrlpipe(ar2->udev, 0),
659 0x20,
660 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
661 channel, 0x0, NULL, 0, USB_CTRL_SET_TIMEOUT);
662 if (r) {
663 dev_err(&ar2->udev->dev, "%s - failed to set channel due to error: %d\n",
664 __func__, r);
665 return r;
666 }
667
668 return 0;
669}
670
671static ssize_t ati_remote2_show_channel_mask(struct device *dev,
672 struct device_attribute *attr,
673 char *buf)
674{
675 struct usb_device *udev = to_usb_device(dev);
676 struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
677 struct ati_remote2 *ar2 = usb_get_intfdata(intf);
678
679 return sprintf(buf, "0x%04x\n", ar2->channel_mask);
680}
681
682static ssize_t ati_remote2_store_channel_mask(struct device *dev,
683 struct device_attribute *attr,
684 const char *buf, size_t count)
685{
686 struct usb_device *udev = to_usb_device(dev);
687 struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
688 struct ati_remote2 *ar2 = usb_get_intfdata(intf);
689 unsigned int mask;
690 int r;
691
692 r = kstrtouint(buf, 0, &mask);
693 if (r)
694 return r;
695
696 if (mask & ~ATI_REMOTE2_MAX_CHANNEL_MASK)
697 return -EINVAL;
698
699 r = usb_autopm_get_interface(ar2->intf[0]);
700 if (r) {
701 dev_err(&ar2->intf[0]->dev,
702 "%s(): usb_autopm_get_interface() = %d\n", __func__, r);
703 return r;
704 }
705
706 scoped_guard(mutex, &ati_remote2_mutex) {
707 if (mask != ar2->channel_mask) {
708 r = ati_remote2_setup(ar2, mask);
709 if (!r)
710 ar2->channel_mask = mask;
711 }
712 }
713
714 usb_autopm_put_interface(ar2->intf[0]);
715
716 return r ? r : count;
717}
718
719static ssize_t ati_remote2_show_mode_mask(struct device *dev,
720 struct device_attribute *attr,
721 char *buf)
722{
723 struct usb_device *udev = to_usb_device(dev);
724 struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
725 struct ati_remote2 *ar2 = usb_get_intfdata(intf);
726
727 return sprintf(buf, "0x%02x\n", ar2->mode_mask);
728}
729
730static ssize_t ati_remote2_store_mode_mask(struct device *dev,
731 struct device_attribute *attr,
732 const char *buf, size_t count)
733{
734 struct usb_device *udev = to_usb_device(dev);
735 struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
736 struct ati_remote2 *ar2 = usb_get_intfdata(intf);
737 unsigned int mask;
738 int err;
739
740 err = kstrtouint(buf, 0, &mask);
741 if (err)
742 return err;
743
744 if (mask & ~ATI_REMOTE2_MAX_MODE_MASK)
745 return -EINVAL;
746
747 ar2->mode_mask = mask;
748
749 return count;
750}
751
752static DEVICE_ATTR(channel_mask, 0644, ati_remote2_show_channel_mask,
753 ati_remote2_store_channel_mask);
754
755static DEVICE_ATTR(mode_mask, 0644, ati_remote2_show_mode_mask,
756 ati_remote2_store_mode_mask);
757
758static struct attribute *ati_remote2_attrs[] = {
759 &dev_attr_channel_mask.attr,
760 &dev_attr_mode_mask.attr,
761 NULL,
762};
763ATTRIBUTE_GROUPS(ati_remote2);
764
765static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id)
766{
767 struct usb_device *udev = interface_to_usbdev(interface);
768 struct usb_host_interface *alt = interface->cur_altsetting;
769 struct ati_remote2 *ar2;
770 int r;
771
772 if (alt->desc.bInterfaceNumber)
773 return -ENODEV;
774
775 ar2 = kzalloc(sizeof (struct ati_remote2), GFP_KERNEL);
776 if (!ar2)
777 return -ENOMEM;
778
779 ar2->udev = udev;
780
781 /* Sanity check, first interface must have an endpoint */
782 if (alt->desc.bNumEndpoints < 1 || !alt->endpoint) {
783 dev_err(&interface->dev,
784 "%s(): interface 0 must have an endpoint\n", __func__);
785 r = -ENODEV;
786 goto fail1;
787 }
788 ar2->intf[0] = interface;
789 ar2->ep[0] = &alt->endpoint[0].desc;
790
791 /* Sanity check, the device must have two interfaces */
792 ar2->intf[1] = usb_ifnum_to_if(udev, 1);
793 if ((udev->actconfig->desc.bNumInterfaces < 2) || !ar2->intf[1]) {
794 dev_err(&interface->dev, "%s(): need 2 interfaces, found %d\n",
795 __func__, udev->actconfig->desc.bNumInterfaces);
796 r = -ENODEV;
797 goto fail1;
798 }
799
800 r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2);
801 if (r)
802 goto fail1;
803
804 /* Sanity check, second interface must have an endpoint */
805 alt = ar2->intf[1]->cur_altsetting;
806 if (alt->desc.bNumEndpoints < 1 || !alt->endpoint) {
807 dev_err(&interface->dev,
808 "%s(): interface 1 must have an endpoint\n", __func__);
809 r = -ENODEV;
810 goto fail2;
811 }
812 ar2->ep[1] = &alt->endpoint[0].desc;
813
814 r = ati_remote2_urb_init(ar2);
815 if (r)
816 goto fail3;
817
818 ar2->channel_mask = channel_mask;
819 ar2->mode_mask = mode_mask;
820
821 r = ati_remote2_setup(ar2, ar2->channel_mask);
822 if (r)
823 goto fail3;
824
825 usb_make_path(udev, ar2->phys, sizeof(ar2->phys));
826 strlcat(ar2->phys, "/input0", sizeof(ar2->phys));
827
828 strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name));
829
830 r = ati_remote2_input_init(ar2);
831 if (r)
832 goto fail3;
833
834 usb_set_intfdata(interface, ar2);
835
836 interface->needs_remote_wakeup = 1;
837
838 return 0;
839
840 fail3:
841 ati_remote2_urb_cleanup(ar2);
842 fail2:
843 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
844 fail1:
845 kfree(ar2);
846
847 return r;
848}
849
850static void ati_remote2_disconnect(struct usb_interface *interface)
851{
852 struct ati_remote2 *ar2;
853 struct usb_host_interface *alt = interface->cur_altsetting;
854
855 if (alt->desc.bInterfaceNumber)
856 return;
857
858 ar2 = usb_get_intfdata(interface);
859 usb_set_intfdata(interface, NULL);
860
861 input_unregister_device(ar2->idev);
862
863 ati_remote2_urb_cleanup(ar2);
864
865 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
866
867 kfree(ar2);
868}
869
870static int ati_remote2_suspend(struct usb_interface *interface,
871 pm_message_t message)
872{
873 struct ati_remote2 *ar2;
874 struct usb_host_interface *alt = interface->cur_altsetting;
875
876 if (alt->desc.bInterfaceNumber)
877 return 0;
878
879 ar2 = usb_get_intfdata(interface);
880
881 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
882
883 guard(mutex)(&ati_remote2_mutex);
884
885 if (ar2->flags & ATI_REMOTE2_OPENED)
886 ati_remote2_kill_urbs(ar2);
887
888 ar2->flags |= ATI_REMOTE2_SUSPENDED;
889
890 return 0;
891}
892
893static int ati_remote2_resume(struct usb_interface *interface)
894{
895 struct ati_remote2 *ar2;
896 struct usb_host_interface *alt = interface->cur_altsetting;
897 int r = 0;
898
899 if (alt->desc.bInterfaceNumber)
900 return 0;
901
902 ar2 = usb_get_intfdata(interface);
903
904 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
905
906 guard(mutex)(&ati_remote2_mutex);
907
908 if (ar2->flags & ATI_REMOTE2_OPENED)
909 r = ati_remote2_submit_urbs(ar2);
910
911 if (!r)
912 ar2->flags &= ~ATI_REMOTE2_SUSPENDED;
913
914 return r;
915}
916
917static int ati_remote2_reset_resume(struct usb_interface *interface)
918{
919 struct ati_remote2 *ar2;
920 struct usb_host_interface *alt = interface->cur_altsetting;
921 int r = 0;
922
923 if (alt->desc.bInterfaceNumber)
924 return 0;
925
926 ar2 = usb_get_intfdata(interface);
927
928 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
929
930 guard(mutex)(&ati_remote2_mutex);
931
932 r = ati_remote2_setup(ar2, ar2->channel_mask);
933 if (r)
934 return r;
935
936 if (ar2->flags & ATI_REMOTE2_OPENED)
937 r = ati_remote2_submit_urbs(ar2);
938
939 if (!r)
940 ar2->flags &= ~ATI_REMOTE2_SUSPENDED;
941
942 return r;
943}
944
945static int ati_remote2_pre_reset(struct usb_interface *interface)
946{
947 struct ati_remote2 *ar2;
948 struct usb_host_interface *alt = interface->cur_altsetting;
949
950 if (alt->desc.bInterfaceNumber)
951 return 0;
952
953 ar2 = usb_get_intfdata(interface);
954
955 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
956
957 mutex_lock(&ati_remote2_mutex);
958
959 if (ar2->flags == ATI_REMOTE2_OPENED)
960 ati_remote2_kill_urbs(ar2);
961
962 return 0;
963}
964
965static int ati_remote2_post_reset(struct usb_interface *interface)
966{
967 struct ati_remote2 *ar2;
968 struct usb_host_interface *alt = interface->cur_altsetting;
969 int r = 0;
970
971 if (alt->desc.bInterfaceNumber)
972 return 0;
973
974 ar2 = usb_get_intfdata(interface);
975
976 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
977
978 if (ar2->flags == ATI_REMOTE2_OPENED)
979 r = ati_remote2_submit_urbs(ar2);
980
981 mutex_unlock(&ati_remote2_mutex);
982
983 return r;
984}
985
986static struct usb_driver ati_remote2_driver = {
987 .name = "ati_remote2",
988 .probe = ati_remote2_probe,
989 .disconnect = ati_remote2_disconnect,
990 .dev_groups = ati_remote2_groups,
991 .id_table = ati_remote2_id_table,
992 .suspend = ati_remote2_suspend,
993 .resume = ati_remote2_resume,
994 .reset_resume = ati_remote2_reset_resume,
995 .pre_reset = ati_remote2_pre_reset,
996 .post_reset = ati_remote2_post_reset,
997 .supports_autosuspend = 1,
998};
999
1000module_usb_driver(ati_remote2_driver);
1/*
2 * ati_remote2 - ATI/Philips USB RF remote driver
3 *
4 * Copyright (C) 2005-2008 Ville Syrjala <syrjala@sci.fi>
5 * Copyright (C) 2007-2008 Peter Stokes <linux@dadeos.co.uk>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2
9 * as published by the Free Software Foundation.
10 */
11
12#include <linux/usb/input.h>
13#include <linux/slab.h>
14
15#define DRIVER_DESC "ATI/Philips USB RF remote driver"
16#define DRIVER_VERSION "0.3"
17
18MODULE_DESCRIPTION(DRIVER_DESC);
19MODULE_VERSION(DRIVER_VERSION);
20MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");
21MODULE_LICENSE("GPL");
22
23/*
24 * ATI Remote Wonder II Channel Configuration
25 *
26 * The remote control can by assigned one of sixteen "channels" in order to facilitate
27 * the use of multiple remote controls within range of each other.
28 * A remote's "channel" may be altered by pressing and holding the "PC" button for
29 * approximately 3 seconds, after which the button will slowly flash the count of the
30 * currently configured "channel", using the numeric keypad enter a number between 1 and
31 * 16 and then press the "PC" button again, the button will slowly flash the count of the
32 * newly configured "channel".
33 */
34
35enum {
36 ATI_REMOTE2_MAX_CHANNEL_MASK = 0xFFFF,
37 ATI_REMOTE2_MAX_MODE_MASK = 0x1F,
38};
39
40static int ati_remote2_set_mask(const char *val,
41 const struct kernel_param *kp,
42 unsigned int max)
43{
44 unsigned long mask;
45 int ret;
46
47 if (!val)
48 return -EINVAL;
49
50 ret = strict_strtoul(val, 0, &mask);
51 if (ret)
52 return ret;
53
54 if (mask & ~max)
55 return -EINVAL;
56
57 *(unsigned int *)kp->arg = mask;
58
59 return 0;
60}
61
62static int ati_remote2_set_channel_mask(const char *val,
63 const struct kernel_param *kp)
64{
65 pr_debug("%s()\n", __func__);
66
67 return ati_remote2_set_mask(val, kp, ATI_REMOTE2_MAX_CHANNEL_MASK);
68}
69
70static int ati_remote2_get_channel_mask(char *buffer,
71 const struct kernel_param *kp)
72{
73 pr_debug("%s()\n", __func__);
74
75 return sprintf(buffer, "0x%04x", *(unsigned int *)kp->arg);
76}
77
78static int ati_remote2_set_mode_mask(const char *val,
79 const struct kernel_param *kp)
80{
81 pr_debug("%s()\n", __func__);
82
83 return ati_remote2_set_mask(val, kp, ATI_REMOTE2_MAX_MODE_MASK);
84}
85
86static int ati_remote2_get_mode_mask(char *buffer,
87 const struct kernel_param *kp)
88{
89 pr_debug("%s()\n", __func__);
90
91 return sprintf(buffer, "0x%02x", *(unsigned int *)kp->arg);
92}
93
94static unsigned int channel_mask = ATI_REMOTE2_MAX_CHANNEL_MASK;
95#define param_check_channel_mask(name, p) __param_check(name, p, unsigned int)
96static struct kernel_param_ops param_ops_channel_mask = {
97 .set = ati_remote2_set_channel_mask,
98 .get = ati_remote2_get_channel_mask,
99};
100module_param(channel_mask, channel_mask, 0644);
101MODULE_PARM_DESC(channel_mask, "Bitmask of channels to accept <15:Channel16>...<1:Channel2><0:Channel1>");
102
103static unsigned int mode_mask = ATI_REMOTE2_MAX_MODE_MASK;
104#define param_check_mode_mask(name, p) __param_check(name, p, unsigned int)
105static struct kernel_param_ops param_ops_mode_mask = {
106 .set = ati_remote2_set_mode_mask,
107 .get = ati_remote2_get_mode_mask,
108};
109module_param(mode_mask, mode_mask, 0644);
110MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>");
111
112static struct usb_device_id ati_remote2_id_table[] = {
113 { USB_DEVICE(0x0471, 0x0602) }, /* ATI Remote Wonder II */
114 { }
115};
116MODULE_DEVICE_TABLE(usb, ati_remote2_id_table);
117
118static DEFINE_MUTEX(ati_remote2_mutex);
119
120enum {
121 ATI_REMOTE2_OPENED = 0x1,
122 ATI_REMOTE2_SUSPENDED = 0x2,
123};
124
125enum {
126 ATI_REMOTE2_AUX1,
127 ATI_REMOTE2_AUX2,
128 ATI_REMOTE2_AUX3,
129 ATI_REMOTE2_AUX4,
130 ATI_REMOTE2_PC,
131 ATI_REMOTE2_MODES,
132};
133
134static const struct {
135 u8 hw_code;
136 u16 keycode;
137} ati_remote2_key_table[] = {
138 { 0x00, KEY_0 },
139 { 0x01, KEY_1 },
140 { 0x02, KEY_2 },
141 { 0x03, KEY_3 },
142 { 0x04, KEY_4 },
143 { 0x05, KEY_5 },
144 { 0x06, KEY_6 },
145 { 0x07, KEY_7 },
146 { 0x08, KEY_8 },
147 { 0x09, KEY_9 },
148 { 0x0c, KEY_POWER },
149 { 0x0d, KEY_MUTE },
150 { 0x10, KEY_VOLUMEUP },
151 { 0x11, KEY_VOLUMEDOWN },
152 { 0x20, KEY_CHANNELUP },
153 { 0x21, KEY_CHANNELDOWN },
154 { 0x28, KEY_FORWARD },
155 { 0x29, KEY_REWIND },
156 { 0x2c, KEY_PLAY },
157 { 0x30, KEY_PAUSE },
158 { 0x31, KEY_STOP },
159 { 0x37, KEY_RECORD },
160 { 0x38, KEY_DVD },
161 { 0x39, KEY_TV },
162 { 0x3f, KEY_PROG1 }, /* AUX1-AUX4 and PC */
163 { 0x54, KEY_MENU },
164 { 0x58, KEY_UP },
165 { 0x59, KEY_DOWN },
166 { 0x5a, KEY_LEFT },
167 { 0x5b, KEY_RIGHT },
168 { 0x5c, KEY_OK },
169 { 0x78, KEY_A },
170 { 0x79, KEY_B },
171 { 0x7a, KEY_C },
172 { 0x7b, KEY_D },
173 { 0x7c, KEY_E },
174 { 0x7d, KEY_F },
175 { 0x82, KEY_ENTER },
176 { 0x8e, KEY_VENDOR },
177 { 0x96, KEY_COFFEE },
178 { 0xa9, BTN_LEFT },
179 { 0xaa, BTN_RIGHT },
180 { 0xbe, KEY_QUESTION },
181 { 0xd0, KEY_EDIT },
182 { 0xd5, KEY_FRONT },
183 { 0xf9, KEY_INFO },
184};
185
186struct ati_remote2 {
187 struct input_dev *idev;
188 struct usb_device *udev;
189
190 struct usb_interface *intf[2];
191 struct usb_endpoint_descriptor *ep[2];
192 struct urb *urb[2];
193 void *buf[2];
194 dma_addr_t buf_dma[2];
195
196 unsigned long jiffies;
197 int mode;
198
199 char name[64];
200 char phys[64];
201
202 /* Each mode (AUX1-AUX4 and PC) can have an independent keymap. */
203 u16 keycode[ATI_REMOTE2_MODES][ARRAY_SIZE(ati_remote2_key_table)];
204
205 unsigned int flags;
206
207 unsigned int channel_mask;
208 unsigned int mode_mask;
209};
210
211static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id);
212static void ati_remote2_disconnect(struct usb_interface *interface);
213static int ati_remote2_suspend(struct usb_interface *interface, pm_message_t message);
214static int ati_remote2_resume(struct usb_interface *interface);
215static int ati_remote2_reset_resume(struct usb_interface *interface);
216static int ati_remote2_pre_reset(struct usb_interface *interface);
217static int ati_remote2_post_reset(struct usb_interface *interface);
218
219static struct usb_driver ati_remote2_driver = {
220 .name = "ati_remote2",
221 .probe = ati_remote2_probe,
222 .disconnect = ati_remote2_disconnect,
223 .id_table = ati_remote2_id_table,
224 .suspend = ati_remote2_suspend,
225 .resume = ati_remote2_resume,
226 .reset_resume = ati_remote2_reset_resume,
227 .pre_reset = ati_remote2_pre_reset,
228 .post_reset = ati_remote2_post_reset,
229 .supports_autosuspend = 1,
230};
231
232static int ati_remote2_submit_urbs(struct ati_remote2 *ar2)
233{
234 int r;
235
236 r = usb_submit_urb(ar2->urb[0], GFP_KERNEL);
237 if (r) {
238 dev_err(&ar2->intf[0]->dev,
239 "%s(): usb_submit_urb() = %d\n", __func__, r);
240 return r;
241 }
242 r = usb_submit_urb(ar2->urb[1], GFP_KERNEL);
243 if (r) {
244 usb_kill_urb(ar2->urb[0]);
245 dev_err(&ar2->intf[1]->dev,
246 "%s(): usb_submit_urb() = %d\n", __func__, r);
247 return r;
248 }
249
250 return 0;
251}
252
253static void ati_remote2_kill_urbs(struct ati_remote2 *ar2)
254{
255 usb_kill_urb(ar2->urb[1]);
256 usb_kill_urb(ar2->urb[0]);
257}
258
259static int ati_remote2_open(struct input_dev *idev)
260{
261 struct ati_remote2 *ar2 = input_get_drvdata(idev);
262 int r;
263
264 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
265
266 r = usb_autopm_get_interface(ar2->intf[0]);
267 if (r) {
268 dev_err(&ar2->intf[0]->dev,
269 "%s(): usb_autopm_get_interface() = %d\n", __func__, r);
270 goto fail1;
271 }
272
273 mutex_lock(&ati_remote2_mutex);
274
275 if (!(ar2->flags & ATI_REMOTE2_SUSPENDED)) {
276 r = ati_remote2_submit_urbs(ar2);
277 if (r)
278 goto fail2;
279 }
280
281 ar2->flags |= ATI_REMOTE2_OPENED;
282
283 mutex_unlock(&ati_remote2_mutex);
284
285 usb_autopm_put_interface(ar2->intf[0]);
286
287 return 0;
288
289 fail2:
290 mutex_unlock(&ati_remote2_mutex);
291 usb_autopm_put_interface(ar2->intf[0]);
292 fail1:
293 return r;
294}
295
296static void ati_remote2_close(struct input_dev *idev)
297{
298 struct ati_remote2 *ar2 = input_get_drvdata(idev);
299
300 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
301
302 mutex_lock(&ati_remote2_mutex);
303
304 if (!(ar2->flags & ATI_REMOTE2_SUSPENDED))
305 ati_remote2_kill_urbs(ar2);
306
307 ar2->flags &= ~ATI_REMOTE2_OPENED;
308
309 mutex_unlock(&ati_remote2_mutex);
310}
311
312static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
313{
314 struct input_dev *idev = ar2->idev;
315 u8 *data = ar2->buf[0];
316 int channel, mode;
317
318 channel = data[0] >> 4;
319
320 if (!((1 << channel) & ar2->channel_mask))
321 return;
322
323 mode = data[0] & 0x0F;
324
325 if (mode > ATI_REMOTE2_PC) {
326 dev_err(&ar2->intf[0]->dev,
327 "Unknown mode byte (%02x %02x %02x %02x)\n",
328 data[3], data[2], data[1], data[0]);
329 return;
330 }
331
332 if (!((1 << mode) & ar2->mode_mask))
333 return;
334
335 input_event(idev, EV_REL, REL_X, (s8) data[1]);
336 input_event(idev, EV_REL, REL_Y, (s8) data[2]);
337 input_sync(idev);
338}
339
340static int ati_remote2_lookup(unsigned int hw_code)
341{
342 int i;
343
344 for (i = 0; i < ARRAY_SIZE(ati_remote2_key_table); i++)
345 if (ati_remote2_key_table[i].hw_code == hw_code)
346 return i;
347
348 return -1;
349}
350
351static void ati_remote2_input_key(struct ati_remote2 *ar2)
352{
353 struct input_dev *idev = ar2->idev;
354 u8 *data = ar2->buf[1];
355 int channel, mode, hw_code, index;
356
357 channel = data[0] >> 4;
358
359 if (!((1 << channel) & ar2->channel_mask))
360 return;
361
362 mode = data[0] & 0x0F;
363
364 if (mode > ATI_REMOTE2_PC) {
365 dev_err(&ar2->intf[1]->dev,
366 "Unknown mode byte (%02x %02x %02x %02x)\n",
367 data[3], data[2], data[1], data[0]);
368 return;
369 }
370
371 hw_code = data[2];
372 if (hw_code == 0x3f) {
373 /*
374 * For some incomprehensible reason the mouse pad generates
375 * events which look identical to the events from the last
376 * pressed mode key. Naturally we don't want to generate key
377 * events for the mouse pad so we filter out any subsequent
378 * events from the same mode key.
379 */
380 if (ar2->mode == mode)
381 return;
382
383 if (data[1] == 0)
384 ar2->mode = mode;
385 }
386
387 if (!((1 << mode) & ar2->mode_mask))
388 return;
389
390 index = ati_remote2_lookup(hw_code);
391 if (index < 0) {
392 dev_err(&ar2->intf[1]->dev,
393 "Unknown code byte (%02x %02x %02x %02x)\n",
394 data[3], data[2], data[1], data[0]);
395 return;
396 }
397
398 switch (data[1]) {
399 case 0: /* release */
400 break;
401 case 1: /* press */
402 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_DELAY]);
403 break;
404 case 2: /* repeat */
405
406 /* No repeat for mouse buttons. */
407 if (ar2->keycode[mode][index] == BTN_LEFT ||
408 ar2->keycode[mode][index] == BTN_RIGHT)
409 return;
410
411 if (!time_after_eq(jiffies, ar2->jiffies))
412 return;
413
414 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_PERIOD]);
415 break;
416 default:
417 dev_err(&ar2->intf[1]->dev,
418 "Unknown state byte (%02x %02x %02x %02x)\n",
419 data[3], data[2], data[1], data[0]);
420 return;
421 }
422
423 input_event(idev, EV_KEY, ar2->keycode[mode][index], data[1]);
424 input_sync(idev);
425}
426
427static void ati_remote2_complete_mouse(struct urb *urb)
428{
429 struct ati_remote2 *ar2 = urb->context;
430 int r;
431
432 switch (urb->status) {
433 case 0:
434 usb_mark_last_busy(ar2->udev);
435 ati_remote2_input_mouse(ar2);
436 break;
437 case -ENOENT:
438 case -EILSEQ:
439 case -ECONNRESET:
440 case -ESHUTDOWN:
441 dev_dbg(&ar2->intf[0]->dev,
442 "%s(): urb status = %d\n", __func__, urb->status);
443 return;
444 default:
445 usb_mark_last_busy(ar2->udev);
446 dev_err(&ar2->intf[0]->dev,
447 "%s(): urb status = %d\n", __func__, urb->status);
448 }
449
450 r = usb_submit_urb(urb, GFP_ATOMIC);
451 if (r)
452 dev_err(&ar2->intf[0]->dev,
453 "%s(): usb_submit_urb() = %d\n", __func__, r);
454}
455
456static void ati_remote2_complete_key(struct urb *urb)
457{
458 struct ati_remote2 *ar2 = urb->context;
459 int r;
460
461 switch (urb->status) {
462 case 0:
463 usb_mark_last_busy(ar2->udev);
464 ati_remote2_input_key(ar2);
465 break;
466 case -ENOENT:
467 case -EILSEQ:
468 case -ECONNRESET:
469 case -ESHUTDOWN:
470 dev_dbg(&ar2->intf[1]->dev,
471 "%s(): urb status = %d\n", __func__, urb->status);
472 return;
473 default:
474 usb_mark_last_busy(ar2->udev);
475 dev_err(&ar2->intf[1]->dev,
476 "%s(): urb status = %d\n", __func__, urb->status);
477 }
478
479 r = usb_submit_urb(urb, GFP_ATOMIC);
480 if (r)
481 dev_err(&ar2->intf[1]->dev,
482 "%s(): usb_submit_urb() = %d\n", __func__, r);
483}
484
485static int ati_remote2_getkeycode(struct input_dev *idev,
486 struct input_keymap_entry *ke)
487{
488 struct ati_remote2 *ar2 = input_get_drvdata(idev);
489 unsigned int mode;
490 int offset;
491 unsigned int index;
492 unsigned int scancode;
493
494 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
495 index = ke->index;
496 if (index >= ATI_REMOTE2_MODES *
497 ARRAY_SIZE(ati_remote2_key_table))
498 return -EINVAL;
499
500 mode = ke->index / ARRAY_SIZE(ati_remote2_key_table);
501 offset = ke->index % ARRAY_SIZE(ati_remote2_key_table);
502 scancode = (mode << 8) + ati_remote2_key_table[offset].hw_code;
503 } else {
504 if (input_scancode_to_scalar(ke, &scancode))
505 return -EINVAL;
506
507 mode = scancode >> 8;
508 if (mode > ATI_REMOTE2_PC)
509 return -EINVAL;
510
511 offset = ati_remote2_lookup(scancode & 0xff);
512 if (offset < 0)
513 return -EINVAL;
514
515 index = mode * ARRAY_SIZE(ati_remote2_key_table) + offset;
516 }
517
518 ke->keycode = ar2->keycode[mode][offset];
519 ke->len = sizeof(scancode);
520 memcpy(&ke->scancode, &scancode, sizeof(scancode));
521 ke->index = index;
522
523 return 0;
524}
525
526static int ati_remote2_setkeycode(struct input_dev *idev,
527 const struct input_keymap_entry *ke,
528 unsigned int *old_keycode)
529{
530 struct ati_remote2 *ar2 = input_get_drvdata(idev);
531 unsigned int mode;
532 int offset;
533 unsigned int index;
534 unsigned int scancode;
535
536 if (ke->flags & INPUT_KEYMAP_BY_INDEX) {
537 if (ke->index >= ATI_REMOTE2_MODES *
538 ARRAY_SIZE(ati_remote2_key_table))
539 return -EINVAL;
540
541 mode = ke->index / ARRAY_SIZE(ati_remote2_key_table);
542 offset = ke->index % ARRAY_SIZE(ati_remote2_key_table);
543 } else {
544 if (input_scancode_to_scalar(ke, &scancode))
545 return -EINVAL;
546
547 mode = scancode >> 8;
548 if (mode > ATI_REMOTE2_PC)
549 return -EINVAL;
550
551 offset = ati_remote2_lookup(scancode & 0xff);
552 if (offset < 0)
553 return -EINVAL;
554 }
555
556 *old_keycode = ar2->keycode[mode][offset];
557 ar2->keycode[mode][offset] = ke->keycode;
558 __set_bit(ke->keycode, idev->keybit);
559
560 for (mode = 0; mode < ATI_REMOTE2_MODES; mode++) {
561 for (index = 0; index < ARRAY_SIZE(ati_remote2_key_table); index++) {
562 if (ar2->keycode[mode][index] == *old_keycode)
563 return 0;
564 }
565 }
566
567 __clear_bit(*old_keycode, idev->keybit);
568
569 return 0;
570}
571
572static int ati_remote2_input_init(struct ati_remote2 *ar2)
573{
574 struct input_dev *idev;
575 int index, mode, retval;
576
577 idev = input_allocate_device();
578 if (!idev)
579 return -ENOMEM;
580
581 ar2->idev = idev;
582 input_set_drvdata(idev, ar2);
583
584 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL);
585 idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
586 BIT_MASK(BTN_RIGHT);
587 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
588
589 for (mode = 0; mode < ATI_REMOTE2_MODES; mode++) {
590 for (index = 0; index < ARRAY_SIZE(ati_remote2_key_table); index++) {
591 ar2->keycode[mode][index] = ati_remote2_key_table[index].keycode;
592 __set_bit(ar2->keycode[mode][index], idev->keybit);
593 }
594 }
595
596 /* AUX1-AUX4 and PC generate the same scancode. */
597 index = ati_remote2_lookup(0x3f);
598 ar2->keycode[ATI_REMOTE2_AUX1][index] = KEY_PROG1;
599 ar2->keycode[ATI_REMOTE2_AUX2][index] = KEY_PROG2;
600 ar2->keycode[ATI_REMOTE2_AUX3][index] = KEY_PROG3;
601 ar2->keycode[ATI_REMOTE2_AUX4][index] = KEY_PROG4;
602 ar2->keycode[ATI_REMOTE2_PC][index] = KEY_PC;
603 __set_bit(KEY_PROG1, idev->keybit);
604 __set_bit(KEY_PROG2, idev->keybit);
605 __set_bit(KEY_PROG3, idev->keybit);
606 __set_bit(KEY_PROG4, idev->keybit);
607 __set_bit(KEY_PC, idev->keybit);
608
609 idev->rep[REP_DELAY] = 250;
610 idev->rep[REP_PERIOD] = 33;
611
612 idev->open = ati_remote2_open;
613 idev->close = ati_remote2_close;
614
615 idev->getkeycode = ati_remote2_getkeycode;
616 idev->setkeycode = ati_remote2_setkeycode;
617
618 idev->name = ar2->name;
619 idev->phys = ar2->phys;
620
621 usb_to_input_id(ar2->udev, &idev->id);
622 idev->dev.parent = &ar2->udev->dev;
623
624 retval = input_register_device(idev);
625 if (retval)
626 input_free_device(idev);
627
628 return retval;
629}
630
631static int ati_remote2_urb_init(struct ati_remote2 *ar2)
632{
633 struct usb_device *udev = ar2->udev;
634 int i, pipe, maxp;
635
636 for (i = 0; i < 2; i++) {
637 ar2->buf[i] = usb_alloc_coherent(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]);
638 if (!ar2->buf[i])
639 return -ENOMEM;
640
641 ar2->urb[i] = usb_alloc_urb(0, GFP_KERNEL);
642 if (!ar2->urb[i])
643 return -ENOMEM;
644
645 pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
646 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
647 maxp = maxp > 4 ? 4 : maxp;
648
649 usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
650 i ? ati_remote2_complete_key : ati_remote2_complete_mouse,
651 ar2, ar2->ep[i]->bInterval);
652 ar2->urb[i]->transfer_dma = ar2->buf_dma[i];
653 ar2->urb[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
654 }
655
656 return 0;
657}
658
659static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
660{
661 int i;
662
663 for (i = 0; i < 2; i++) {
664 usb_free_urb(ar2->urb[i]);
665 usb_free_coherent(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]);
666 }
667}
668
669static int ati_remote2_setup(struct ati_remote2 *ar2, unsigned int ch_mask)
670{
671 int r, i, channel;
672
673 /*
674 * Configure receiver to only accept input from remote "channel"
675 * channel == 0 -> Accept input from any remote channel
676 * channel == 1 -> Only accept input from remote channel 1
677 * channel == 2 -> Only accept input from remote channel 2
678 * ...
679 * channel == 16 -> Only accept input from remote channel 16
680 */
681
682 channel = 0;
683 for (i = 0; i < 16; i++) {
684 if ((1 << i) & ch_mask) {
685 if (!(~(1 << i) & ch_mask))
686 channel = i + 1;
687 break;
688 }
689 }
690
691 r = usb_control_msg(ar2->udev, usb_sndctrlpipe(ar2->udev, 0),
692 0x20,
693 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
694 channel, 0x0, NULL, 0, USB_CTRL_SET_TIMEOUT);
695 if (r) {
696 dev_err(&ar2->udev->dev, "%s - failed to set channel due to error: %d\n",
697 __func__, r);
698 return r;
699 }
700
701 return 0;
702}
703
704static ssize_t ati_remote2_show_channel_mask(struct device *dev,
705 struct device_attribute *attr,
706 char *buf)
707{
708 struct usb_device *udev = to_usb_device(dev);
709 struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
710 struct ati_remote2 *ar2 = usb_get_intfdata(intf);
711
712 return sprintf(buf, "0x%04x\n", ar2->channel_mask);
713}
714
715static ssize_t ati_remote2_store_channel_mask(struct device *dev,
716 struct device_attribute *attr,
717 const char *buf, size_t count)
718{
719 struct usb_device *udev = to_usb_device(dev);
720 struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
721 struct ati_remote2 *ar2 = usb_get_intfdata(intf);
722 unsigned long mask;
723 int r;
724
725 if (strict_strtoul(buf, 0, &mask))
726 return -EINVAL;
727
728 if (mask & ~ATI_REMOTE2_MAX_CHANNEL_MASK)
729 return -EINVAL;
730
731 r = usb_autopm_get_interface(ar2->intf[0]);
732 if (r) {
733 dev_err(&ar2->intf[0]->dev,
734 "%s(): usb_autopm_get_interface() = %d\n", __func__, r);
735 return r;
736 }
737
738 mutex_lock(&ati_remote2_mutex);
739
740 if (mask != ar2->channel_mask) {
741 r = ati_remote2_setup(ar2, mask);
742 if (!r)
743 ar2->channel_mask = mask;
744 }
745
746 mutex_unlock(&ati_remote2_mutex);
747
748 usb_autopm_put_interface(ar2->intf[0]);
749
750 return r ? r : count;
751}
752
753static ssize_t ati_remote2_show_mode_mask(struct device *dev,
754 struct device_attribute *attr,
755 char *buf)
756{
757 struct usb_device *udev = to_usb_device(dev);
758 struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
759 struct ati_remote2 *ar2 = usb_get_intfdata(intf);
760
761 return sprintf(buf, "0x%02x\n", ar2->mode_mask);
762}
763
764static ssize_t ati_remote2_store_mode_mask(struct device *dev,
765 struct device_attribute *attr,
766 const char *buf, size_t count)
767{
768 struct usb_device *udev = to_usb_device(dev);
769 struct usb_interface *intf = usb_ifnum_to_if(udev, 0);
770 struct ati_remote2 *ar2 = usb_get_intfdata(intf);
771 unsigned long mask;
772
773 if (strict_strtoul(buf, 0, &mask))
774 return -EINVAL;
775
776 if (mask & ~ATI_REMOTE2_MAX_MODE_MASK)
777 return -EINVAL;
778
779 ar2->mode_mask = mask;
780
781 return count;
782}
783
784static DEVICE_ATTR(channel_mask, 0644, ati_remote2_show_channel_mask,
785 ati_remote2_store_channel_mask);
786
787static DEVICE_ATTR(mode_mask, 0644, ati_remote2_show_mode_mask,
788 ati_remote2_store_mode_mask);
789
790static struct attribute *ati_remote2_attrs[] = {
791 &dev_attr_channel_mask.attr,
792 &dev_attr_mode_mask.attr,
793 NULL,
794};
795
796static struct attribute_group ati_remote2_attr_group = {
797 .attrs = ati_remote2_attrs,
798};
799
800static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id)
801{
802 struct usb_device *udev = interface_to_usbdev(interface);
803 struct usb_host_interface *alt = interface->cur_altsetting;
804 struct ati_remote2 *ar2;
805 int r;
806
807 if (alt->desc.bInterfaceNumber)
808 return -ENODEV;
809
810 ar2 = kzalloc(sizeof (struct ati_remote2), GFP_KERNEL);
811 if (!ar2)
812 return -ENOMEM;
813
814 ar2->udev = udev;
815
816 ar2->intf[0] = interface;
817 ar2->ep[0] = &alt->endpoint[0].desc;
818
819 ar2->intf[1] = usb_ifnum_to_if(udev, 1);
820 r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2);
821 if (r)
822 goto fail1;
823 alt = ar2->intf[1]->cur_altsetting;
824 ar2->ep[1] = &alt->endpoint[0].desc;
825
826 r = ati_remote2_urb_init(ar2);
827 if (r)
828 goto fail2;
829
830 ar2->channel_mask = channel_mask;
831 ar2->mode_mask = mode_mask;
832
833 r = ati_remote2_setup(ar2, ar2->channel_mask);
834 if (r)
835 goto fail2;
836
837 usb_make_path(udev, ar2->phys, sizeof(ar2->phys));
838 strlcat(ar2->phys, "/input0", sizeof(ar2->phys));
839
840 strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name));
841
842 r = sysfs_create_group(&udev->dev.kobj, &ati_remote2_attr_group);
843 if (r)
844 goto fail2;
845
846 r = ati_remote2_input_init(ar2);
847 if (r)
848 goto fail3;
849
850 usb_set_intfdata(interface, ar2);
851
852 interface->needs_remote_wakeup = 1;
853
854 return 0;
855
856 fail3:
857 sysfs_remove_group(&udev->dev.kobj, &ati_remote2_attr_group);
858 fail2:
859 ati_remote2_urb_cleanup(ar2);
860 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
861 fail1:
862 kfree(ar2);
863
864 return r;
865}
866
867static void ati_remote2_disconnect(struct usb_interface *interface)
868{
869 struct ati_remote2 *ar2;
870 struct usb_host_interface *alt = interface->cur_altsetting;
871
872 if (alt->desc.bInterfaceNumber)
873 return;
874
875 ar2 = usb_get_intfdata(interface);
876 usb_set_intfdata(interface, NULL);
877
878 input_unregister_device(ar2->idev);
879
880 sysfs_remove_group(&ar2->udev->dev.kobj, &ati_remote2_attr_group);
881
882 ati_remote2_urb_cleanup(ar2);
883
884 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
885
886 kfree(ar2);
887}
888
889static int ati_remote2_suspend(struct usb_interface *interface,
890 pm_message_t message)
891{
892 struct ati_remote2 *ar2;
893 struct usb_host_interface *alt = interface->cur_altsetting;
894
895 if (alt->desc.bInterfaceNumber)
896 return 0;
897
898 ar2 = usb_get_intfdata(interface);
899
900 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
901
902 mutex_lock(&ati_remote2_mutex);
903
904 if (ar2->flags & ATI_REMOTE2_OPENED)
905 ati_remote2_kill_urbs(ar2);
906
907 ar2->flags |= ATI_REMOTE2_SUSPENDED;
908
909 mutex_unlock(&ati_remote2_mutex);
910
911 return 0;
912}
913
914static int ati_remote2_resume(struct usb_interface *interface)
915{
916 struct ati_remote2 *ar2;
917 struct usb_host_interface *alt = interface->cur_altsetting;
918 int r = 0;
919
920 if (alt->desc.bInterfaceNumber)
921 return 0;
922
923 ar2 = usb_get_intfdata(interface);
924
925 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
926
927 mutex_lock(&ati_remote2_mutex);
928
929 if (ar2->flags & ATI_REMOTE2_OPENED)
930 r = ati_remote2_submit_urbs(ar2);
931
932 if (!r)
933 ar2->flags &= ~ATI_REMOTE2_SUSPENDED;
934
935 mutex_unlock(&ati_remote2_mutex);
936
937 return r;
938}
939
940static int ati_remote2_reset_resume(struct usb_interface *interface)
941{
942 struct ati_remote2 *ar2;
943 struct usb_host_interface *alt = interface->cur_altsetting;
944 int r = 0;
945
946 if (alt->desc.bInterfaceNumber)
947 return 0;
948
949 ar2 = usb_get_intfdata(interface);
950
951 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
952
953 mutex_lock(&ati_remote2_mutex);
954
955 r = ati_remote2_setup(ar2, ar2->channel_mask);
956 if (r)
957 goto out;
958
959 if (ar2->flags & ATI_REMOTE2_OPENED)
960 r = ati_remote2_submit_urbs(ar2);
961
962 if (!r)
963 ar2->flags &= ~ATI_REMOTE2_SUSPENDED;
964
965 out:
966 mutex_unlock(&ati_remote2_mutex);
967
968 return r;
969}
970
971static int ati_remote2_pre_reset(struct usb_interface *interface)
972{
973 struct ati_remote2 *ar2;
974 struct usb_host_interface *alt = interface->cur_altsetting;
975
976 if (alt->desc.bInterfaceNumber)
977 return 0;
978
979 ar2 = usb_get_intfdata(interface);
980
981 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
982
983 mutex_lock(&ati_remote2_mutex);
984
985 if (ar2->flags == ATI_REMOTE2_OPENED)
986 ati_remote2_kill_urbs(ar2);
987
988 return 0;
989}
990
991static int ati_remote2_post_reset(struct usb_interface *interface)
992{
993 struct ati_remote2 *ar2;
994 struct usb_host_interface *alt = interface->cur_altsetting;
995 int r = 0;
996
997 if (alt->desc.bInterfaceNumber)
998 return 0;
999
1000 ar2 = usb_get_intfdata(interface);
1001
1002 dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__);
1003
1004 if (ar2->flags == ATI_REMOTE2_OPENED)
1005 r = ati_remote2_submit_urbs(ar2);
1006
1007 mutex_unlock(&ati_remote2_mutex);
1008
1009 return r;
1010}
1011
1012static int __init ati_remote2_init(void)
1013{
1014 int r;
1015
1016 r = usb_register(&ati_remote2_driver);
1017 if (r)
1018 printk(KERN_ERR "ati_remote2: usb_register() = %d\n", r);
1019 else
1020 printk(KERN_INFO "ati_remote2: " DRIVER_DESC " " DRIVER_VERSION "\n");
1021
1022 return r;
1023}
1024
1025static void __exit ati_remote2_exit(void)
1026{
1027 usb_deregister(&ati_remote2_driver);
1028}
1029
1030module_init(ati_remote2_init);
1031module_exit(ati_remote2_exit);