This source file includes following definitions.
- cec_log_addr2idx
- cec_log_addr2dev
- cec_get_edid_phys_addr
- cec_fill_conn_info_from_drm
- cec_queue_event_fh
- cec_queue_event
- cec_queue_pin_cec_event
- cec_queue_pin_hpd_event
- cec_queue_pin_5v_event
- cec_queue_msg_fh
- cec_queue_msg_monitor
- cec_queue_msg_followers
- cec_post_state_event
- cec_data_completed
- cec_data_cancel
- cec_flush
- cec_thread_func
- cec_transmit_done_ts
- cec_transmit_attempt_done_ts
- cec_wait_timeout
- cec_transmit_msg_fh
- cec_transmit_msg
- cec_received_msg_ts
- cec_config_log_addr
- cec_adap_unconfigure
- cec_config_thread_func
- cec_claim_log_addrs
- __cec_s_phys_addr
- cec_s_phys_addr
- cec_s_phys_addr_from_edid
- cec_s_conn_info
- __cec_s_log_addrs
- cec_s_log_addrs
- cec_fill_msg_report_features
- cec_feature_abort_reason
- cec_feature_abort
- cec_feature_refused
- cec_receive_notify
- cec_monitor_all_cnt_inc
- cec_monitor_all_cnt_dec
- cec_monitor_pin_cnt_inc
- cec_monitor_pin_cnt_dec
- cec_adap_status
1
2
3
4
5
6
7
8 #include <linux/errno.h>
9 #include <linux/init.h>
10 #include <linux/module.h>
11 #include <linux/kernel.h>
12 #include <linux/kmod.h>
13 #include <linux/ktime.h>
14 #include <linux/slab.h>
15 #include <linux/mm.h>
16 #include <linux/string.h>
17 #include <linux/types.h>
18
19 #include <drm/drm_connector.h>
20 #include <drm/drm_device.h>
21 #include <drm/drm_edid.h>
22 #include <drm/drm_file.h>
23
24 #include "cec-priv.h"
25
26 static void cec_fill_msg_report_features(struct cec_adapter *adap,
27 struct cec_msg *msg,
28 unsigned int la_idx);
29
30
31
32
33
34
35
36
37
38
39
40 #define CEC_XFER_TIMEOUT_MS (5 * 400 + 100)
41
42 #define call_op(adap, op, arg...) \
43 (adap->ops->op ? adap->ops->op(adap, ## arg) : 0)
44
45 #define call_void_op(adap, op, arg...) \
46 do { \
47 if (adap->ops->op) \
48 adap->ops->op(adap, ## arg); \
49 } while (0)
50
51 static int cec_log_addr2idx(const struct cec_adapter *adap, u8 log_addr)
52 {
53 int i;
54
55 for (i = 0; i < adap->log_addrs.num_log_addrs; i++)
56 if (adap->log_addrs.log_addr[i] == log_addr)
57 return i;
58 return -1;
59 }
60
61 static unsigned int cec_log_addr2dev(const struct cec_adapter *adap, u8 log_addr)
62 {
63 int i = cec_log_addr2idx(adap, log_addr);
64
65 return adap->log_addrs.primary_device_type[i < 0 ? 0 : i];
66 }
67
68 u16 cec_get_edid_phys_addr(const u8 *edid, unsigned int size,
69 unsigned int *offset)
70 {
71 unsigned int loc = cec_get_edid_spa_location(edid, size);
72
73 if (offset)
74 *offset = loc;
75 if (loc == 0)
76 return CEC_PHYS_ADDR_INVALID;
77 return (edid[loc] << 8) | edid[loc + 1];
78 }
79 EXPORT_SYMBOL_GPL(cec_get_edid_phys_addr);
80
81 void cec_fill_conn_info_from_drm(struct cec_connector_info *conn_info,
82 const struct drm_connector *connector)
83 {
84 memset(conn_info, 0, sizeof(*conn_info));
85 conn_info->type = CEC_CONNECTOR_TYPE_DRM;
86 conn_info->drm.card_no = connector->dev->primary->index;
87 conn_info->drm.connector_id = connector->base.id;
88 }
89 EXPORT_SYMBOL_GPL(cec_fill_conn_info_from_drm);
90
91
92
93
94
95
96
97
98
99 void cec_queue_event_fh(struct cec_fh *fh,
100 const struct cec_event *new_ev, u64 ts)
101 {
102 static const u16 max_events[CEC_NUM_EVENTS] = {
103 1, 1, 800, 800, 8, 8, 8, 8
104 };
105 struct cec_event_entry *entry;
106 unsigned int ev_idx = new_ev->event - 1;
107
108 if (WARN_ON(ev_idx >= ARRAY_SIZE(fh->events)))
109 return;
110
111 if (ts == 0)
112 ts = ktime_get_ns();
113
114 mutex_lock(&fh->lock);
115 if (ev_idx < CEC_NUM_CORE_EVENTS)
116 entry = &fh->core_events[ev_idx];
117 else
118 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
119 if (entry) {
120 if (new_ev->event == CEC_EVENT_LOST_MSGS &&
121 fh->queued_events[ev_idx]) {
122 entry->ev.lost_msgs.lost_msgs +=
123 new_ev->lost_msgs.lost_msgs;
124 goto unlock;
125 }
126 entry->ev = *new_ev;
127 entry->ev.ts = ts;
128
129 if (fh->queued_events[ev_idx] < max_events[ev_idx]) {
130
131 list_add_tail(&entry->list, &fh->events[ev_idx]);
132 fh->queued_events[ev_idx]++;
133 fh->total_queued_events++;
134 goto unlock;
135 }
136
137 if (ev_idx >= CEC_NUM_CORE_EVENTS) {
138 list_add_tail(&entry->list, &fh->events[ev_idx]);
139
140 entry = list_first_entry(&fh->events[ev_idx],
141 struct cec_event_entry, list);
142 list_del(&entry->list);
143 kfree(entry);
144 }
145 }
146
147 entry = list_first_entry_or_null(&fh->events[ev_idx],
148 struct cec_event_entry, list);
149 if (entry)
150 entry->ev.flags |= CEC_EVENT_FL_DROPPED_EVENTS;
151
152 unlock:
153 mutex_unlock(&fh->lock);
154 wake_up_interruptible(&fh->wait);
155 }
156
157
158 static void cec_queue_event(struct cec_adapter *adap,
159 const struct cec_event *ev)
160 {
161 u64 ts = ktime_get_ns();
162 struct cec_fh *fh;
163
164 mutex_lock(&adap->devnode.lock);
165 list_for_each_entry(fh, &adap->devnode.fhs, list)
166 cec_queue_event_fh(fh, ev, ts);
167 mutex_unlock(&adap->devnode.lock);
168 }
169
170
171 void cec_queue_pin_cec_event(struct cec_adapter *adap, bool is_high,
172 bool dropped_events, ktime_t ts)
173 {
174 struct cec_event ev = {
175 .event = is_high ? CEC_EVENT_PIN_CEC_HIGH :
176 CEC_EVENT_PIN_CEC_LOW,
177 .flags = dropped_events ? CEC_EVENT_FL_DROPPED_EVENTS : 0,
178 };
179 struct cec_fh *fh;
180
181 mutex_lock(&adap->devnode.lock);
182 list_for_each_entry(fh, &adap->devnode.fhs, list)
183 if (fh->mode_follower == CEC_MODE_MONITOR_PIN)
184 cec_queue_event_fh(fh, &ev, ktime_to_ns(ts));
185 mutex_unlock(&adap->devnode.lock);
186 }
187 EXPORT_SYMBOL_GPL(cec_queue_pin_cec_event);
188
189
190 void cec_queue_pin_hpd_event(struct cec_adapter *adap, bool is_high, ktime_t ts)
191 {
192 struct cec_event ev = {
193 .event = is_high ? CEC_EVENT_PIN_HPD_HIGH :
194 CEC_EVENT_PIN_HPD_LOW,
195 };
196 struct cec_fh *fh;
197
198 mutex_lock(&adap->devnode.lock);
199 list_for_each_entry(fh, &adap->devnode.fhs, list)
200 cec_queue_event_fh(fh, &ev, ktime_to_ns(ts));
201 mutex_unlock(&adap->devnode.lock);
202 }
203 EXPORT_SYMBOL_GPL(cec_queue_pin_hpd_event);
204
205
206 void cec_queue_pin_5v_event(struct cec_adapter *adap, bool is_high, ktime_t ts)
207 {
208 struct cec_event ev = {
209 .event = is_high ? CEC_EVENT_PIN_5V_HIGH :
210 CEC_EVENT_PIN_5V_LOW,
211 };
212 struct cec_fh *fh;
213
214 mutex_lock(&adap->devnode.lock);
215 list_for_each_entry(fh, &adap->devnode.fhs, list)
216 cec_queue_event_fh(fh, &ev, ktime_to_ns(ts));
217 mutex_unlock(&adap->devnode.lock);
218 }
219 EXPORT_SYMBOL_GPL(cec_queue_pin_5v_event);
220
221
222
223
224
225
226
227
228 static void cec_queue_msg_fh(struct cec_fh *fh, const struct cec_msg *msg)
229 {
230 static const struct cec_event ev_lost_msgs = {
231 .event = CEC_EVENT_LOST_MSGS,
232 .flags = 0,
233 {
234 .lost_msgs = { 1 },
235 },
236 };
237 struct cec_msg_entry *entry;
238
239 mutex_lock(&fh->lock);
240 entry = kmalloc(sizeof(*entry), GFP_KERNEL);
241 if (entry) {
242 entry->msg = *msg;
243
244 list_add_tail(&entry->list, &fh->msgs);
245
246 if (fh->queued_msgs < CEC_MAX_MSG_RX_QUEUE_SZ) {
247
248 fh->queued_msgs++;
249 mutex_unlock(&fh->lock);
250 wake_up_interruptible(&fh->wait);
251 return;
252 }
253
254
255
256
257
258 entry = list_first_entry(&fh->msgs, struct cec_msg_entry, list);
259 list_del(&entry->list);
260 kfree(entry);
261 }
262 mutex_unlock(&fh->lock);
263
264
265
266
267
268 cec_queue_event_fh(fh, &ev_lost_msgs, ktime_get_ns());
269 }
270
271
272
273
274
275
276
277
278
279
280
281 static void cec_queue_msg_monitor(struct cec_adapter *adap,
282 const struct cec_msg *msg,
283 bool valid_la)
284 {
285 struct cec_fh *fh;
286 u32 monitor_mode = valid_la ? CEC_MODE_MONITOR :
287 CEC_MODE_MONITOR_ALL;
288
289 mutex_lock(&adap->devnode.lock);
290 list_for_each_entry(fh, &adap->devnode.fhs, list) {
291 if (fh->mode_follower >= monitor_mode)
292 cec_queue_msg_fh(fh, msg);
293 }
294 mutex_unlock(&adap->devnode.lock);
295 }
296
297
298
299
300 static void cec_queue_msg_followers(struct cec_adapter *adap,
301 const struct cec_msg *msg)
302 {
303 struct cec_fh *fh;
304
305 mutex_lock(&adap->devnode.lock);
306 list_for_each_entry(fh, &adap->devnode.fhs, list) {
307 if (fh->mode_follower == CEC_MODE_FOLLOWER)
308 cec_queue_msg_fh(fh, msg);
309 }
310 mutex_unlock(&adap->devnode.lock);
311 }
312
313
314 static void cec_post_state_event(struct cec_adapter *adap)
315 {
316 struct cec_event ev = {
317 .event = CEC_EVENT_STATE_CHANGE,
318 };
319
320 ev.state_change.phys_addr = adap->phys_addr;
321 ev.state_change.log_addr_mask = adap->log_addrs.log_addr_mask;
322 cec_queue_event(adap, &ev);
323 }
324
325
326
327
328
329
330
331
332 static void cec_data_completed(struct cec_data *data)
333 {
334
335
336
337
338
339
340
341
342 if (data->fh)
343 list_del(&data->xfer_list);
344
345 if (data->blocking) {
346
347
348
349
350 data->completed = true;
351 complete(&data->c);
352 } else {
353
354
355
356
357 if (data->fh)
358 cec_queue_msg_fh(data->fh, &data->msg);
359 kfree(data);
360 }
361 }
362
363
364
365
366
367
368
369
370 static void cec_data_cancel(struct cec_data *data, u8 tx_status)
371 {
372
373
374
375
376 if (data->adap->transmitting == data) {
377 data->adap->transmitting = NULL;
378 } else {
379 list_del_init(&data->list);
380 if (!(data->msg.tx_status & CEC_TX_STATUS_OK))
381 if (!WARN_ON(!data->adap->transmit_queue_sz))
382 data->adap->transmit_queue_sz--;
383 }
384
385 if (data->msg.tx_status & CEC_TX_STATUS_OK) {
386 data->msg.rx_ts = ktime_get_ns();
387 data->msg.rx_status = CEC_RX_STATUS_ABORTED;
388 } else {
389 data->msg.tx_ts = ktime_get_ns();
390 data->msg.tx_status |= tx_status |
391 CEC_TX_STATUS_MAX_RETRIES;
392 data->msg.tx_error_cnt++;
393 data->attempts = 0;
394 }
395
396
397 cec_queue_msg_monitor(data->adap, &data->msg, 1);
398
399 cec_data_completed(data);
400 }
401
402
403
404
405
406
407 static void cec_flush(struct cec_adapter *adap)
408 {
409 struct cec_data *data, *n;
410
411
412
413
414
415 while (!list_empty(&adap->transmit_queue)) {
416 data = list_first_entry(&adap->transmit_queue,
417 struct cec_data, list);
418 cec_data_cancel(data, CEC_TX_STATUS_ABORTED);
419 }
420 if (adap->transmitting)
421 cec_data_cancel(adap->transmitting, CEC_TX_STATUS_ABORTED);
422
423
424 list_for_each_entry_safe(data, n, &adap->wait_queue, list) {
425 if (cancel_delayed_work(&data->work))
426 cec_data_cancel(data, CEC_TX_STATUS_OK);
427
428
429
430
431
432
433 }
434
435
436
437
438
439
440 if (WARN_ON(adap->transmit_queue_sz))
441 adap->transmit_queue_sz = 0;
442 }
443
444
445
446
447
448
449
450
451
452
453
454
455
456 int cec_thread_func(void *_adap)
457 {
458 struct cec_adapter *adap = _adap;
459
460 for (;;) {
461 unsigned int signal_free_time;
462 struct cec_data *data;
463 bool timeout = false;
464 u8 attempts;
465
466 if (adap->transmit_in_progress) {
467 int err;
468
469
470
471
472
473
474
475
476 err = wait_event_interruptible_timeout(adap->kthread_waitq,
477 (adap->needs_hpd &&
478 (!adap->is_configured && !adap->is_configuring)) ||
479 kthread_should_stop() ||
480 (!adap->transmit_in_progress &&
481 !list_empty(&adap->transmit_queue)),
482 msecs_to_jiffies(CEC_XFER_TIMEOUT_MS));
483 timeout = err == 0;
484 } else {
485
486 wait_event_interruptible(adap->kthread_waitq,
487 kthread_should_stop() ||
488 (!adap->transmit_in_progress &&
489 !list_empty(&adap->transmit_queue)));
490 }
491
492 mutex_lock(&adap->lock);
493
494 if ((adap->needs_hpd &&
495 (!adap->is_configured && !adap->is_configuring)) ||
496 kthread_should_stop()) {
497 cec_flush(adap);
498 goto unlock;
499 }
500
501 if (adap->transmit_in_progress && timeout) {
502
503
504
505
506
507
508
509
510 if (adap->transmitting) {
511 pr_warn("cec-%s: message %*ph timed out\n", adap->name,
512 adap->transmitting->msg.len,
513 adap->transmitting->msg.msg);
514
515 cec_data_cancel(adap->transmitting,
516 CEC_TX_STATUS_TIMEOUT);
517 } else {
518 pr_warn("cec-%s: transmit timed out\n", adap->name);
519 }
520 adap->transmit_in_progress = false;
521 adap->tx_timeouts++;
522 goto unlock;
523 }
524
525
526
527
528
529 if (adap->transmit_in_progress || list_empty(&adap->transmit_queue))
530 goto unlock;
531
532
533 data = list_first_entry(&adap->transmit_queue,
534 struct cec_data, list);
535 list_del_init(&data->list);
536 if (!WARN_ON(!data->adap->transmit_queue_sz))
537 adap->transmit_queue_sz--;
538
539
540 adap->transmitting = data;
541
542
543
544
545
546
547
548 if (data->msg.len == 1 && adap->is_configured)
549 attempts = 2;
550 else
551 attempts = 4;
552
553
554 if (data->attempts) {
555
556 signal_free_time = CEC_SIGNAL_FREE_TIME_RETRY;
557 } else if (adap->last_initiator !=
558 cec_msg_initiator(&data->msg)) {
559
560 signal_free_time = CEC_SIGNAL_FREE_TIME_NEW_INITIATOR;
561 adap->last_initiator = cec_msg_initiator(&data->msg);
562 } else {
563
564
565
566
567 signal_free_time = CEC_SIGNAL_FREE_TIME_NEXT_XFER;
568 }
569 if (data->attempts == 0)
570 data->attempts = attempts;
571
572
573 if (adap->ops->adap_transmit(adap, data->attempts,
574 signal_free_time, &data->msg))
575 cec_data_cancel(data, CEC_TX_STATUS_ABORTED);
576 else
577 adap->transmit_in_progress = true;
578
579 unlock:
580 mutex_unlock(&adap->lock);
581
582 if (kthread_should_stop())
583 break;
584 }
585 return 0;
586 }
587
588
589
590
591 void cec_transmit_done_ts(struct cec_adapter *adap, u8 status,
592 u8 arb_lost_cnt, u8 nack_cnt, u8 low_drive_cnt,
593 u8 error_cnt, ktime_t ts)
594 {
595 struct cec_data *data;
596 struct cec_msg *msg;
597 unsigned int attempts_made = arb_lost_cnt + nack_cnt +
598 low_drive_cnt + error_cnt;
599
600 dprintk(2, "%s: status 0x%02x\n", __func__, status);
601 if (attempts_made < 1)
602 attempts_made = 1;
603
604 mutex_lock(&adap->lock);
605 data = adap->transmitting;
606 if (!data) {
607
608
609
610
611
612 if (!adap->transmit_in_progress)
613 dprintk(1, "%s was called without an ongoing transmit!\n",
614 __func__);
615 adap->transmit_in_progress = false;
616 goto wake_thread;
617 }
618 adap->transmit_in_progress = false;
619
620 msg = &data->msg;
621
622
623 WARN_ON(status == 0);
624 msg->tx_ts = ktime_to_ns(ts);
625 msg->tx_status |= status;
626 msg->tx_arb_lost_cnt += arb_lost_cnt;
627 msg->tx_nack_cnt += nack_cnt;
628 msg->tx_low_drive_cnt += low_drive_cnt;
629 msg->tx_error_cnt += error_cnt;
630
631
632 adap->transmitting = NULL;
633
634
635
636
637
638
639 if (data->attempts > attempts_made &&
640 !(status & (CEC_TX_STATUS_MAX_RETRIES | CEC_TX_STATUS_OK))) {
641
642 data->attempts -= attempts_made;
643 if (msg->timeout)
644 dprintk(2, "retransmit: %*ph (attempts: %d, wait for 0x%02x)\n",
645 msg->len, msg->msg, data->attempts, msg->reply);
646 else
647 dprintk(2, "retransmit: %*ph (attempts: %d)\n",
648 msg->len, msg->msg, data->attempts);
649
650 list_add(&data->list, &adap->transmit_queue);
651 adap->transmit_queue_sz++;
652 goto wake_thread;
653 }
654
655 data->attempts = 0;
656
657
658 if (!(status & CEC_TX_STATUS_OK))
659 msg->tx_status |= CEC_TX_STATUS_MAX_RETRIES;
660
661
662 cec_queue_msg_monitor(adap, msg, 1);
663
664 if ((status & CEC_TX_STATUS_OK) && adap->is_configured &&
665 msg->timeout) {
666
667
668
669
670 list_add_tail(&data->list, &adap->wait_queue);
671 schedule_delayed_work(&data->work,
672 msecs_to_jiffies(msg->timeout));
673 } else {
674
675 cec_data_completed(data);
676 }
677
678 wake_thread:
679
680
681
682
683 wake_up_interruptible(&adap->kthread_waitq);
684 mutex_unlock(&adap->lock);
685 }
686 EXPORT_SYMBOL_GPL(cec_transmit_done_ts);
687
688 void cec_transmit_attempt_done_ts(struct cec_adapter *adap,
689 u8 status, ktime_t ts)
690 {
691 switch (status & ~CEC_TX_STATUS_MAX_RETRIES) {
692 case CEC_TX_STATUS_OK:
693 cec_transmit_done_ts(adap, status, 0, 0, 0, 0, ts);
694 return;
695 case CEC_TX_STATUS_ARB_LOST:
696 cec_transmit_done_ts(adap, status, 1, 0, 0, 0, ts);
697 return;
698 case CEC_TX_STATUS_NACK:
699 cec_transmit_done_ts(adap, status, 0, 1, 0, 0, ts);
700 return;
701 case CEC_TX_STATUS_LOW_DRIVE:
702 cec_transmit_done_ts(adap, status, 0, 0, 1, 0, ts);
703 return;
704 case CEC_TX_STATUS_ERROR:
705 cec_transmit_done_ts(adap, status, 0, 0, 0, 1, ts);
706 return;
707 default:
708
709 WARN(1, "cec-%s: invalid status 0x%02x\n", adap->name, status);
710 return;
711 }
712 }
713 EXPORT_SYMBOL_GPL(cec_transmit_attempt_done_ts);
714
715
716
717
718 static void cec_wait_timeout(struct work_struct *work)
719 {
720 struct cec_data *data = container_of(work, struct cec_data, work.work);
721 struct cec_adapter *adap = data->adap;
722
723 mutex_lock(&adap->lock);
724
725
726
727
728 if (list_empty(&data->list))
729 goto unlock;
730
731
732 list_del_init(&data->list);
733 data->msg.rx_ts = ktime_get_ns();
734 data->msg.rx_status = CEC_RX_STATUS_TIMEOUT;
735 cec_data_completed(data);
736 unlock:
737 mutex_unlock(&adap->lock);
738 }
739
740
741
742
743
744
745
746 int cec_transmit_msg_fh(struct cec_adapter *adap, struct cec_msg *msg,
747 struct cec_fh *fh, bool block)
748 {
749 struct cec_data *data;
750 bool is_raw = msg_is_raw(msg);
751
752 msg->rx_ts = 0;
753 msg->tx_ts = 0;
754 msg->rx_status = 0;
755 msg->tx_status = 0;
756 msg->tx_arb_lost_cnt = 0;
757 msg->tx_nack_cnt = 0;
758 msg->tx_low_drive_cnt = 0;
759 msg->tx_error_cnt = 0;
760 msg->sequence = 0;
761
762 if (msg->reply && msg->timeout == 0) {
763
764 msg->timeout = 1000;
765 }
766 msg->flags &= CEC_MSG_FL_REPLY_TO_FOLLOWERS | CEC_MSG_FL_RAW;
767
768 if (!msg->timeout)
769 msg->flags &= ~CEC_MSG_FL_REPLY_TO_FOLLOWERS;
770
771
772 if (msg->len == 0 || msg->len > CEC_MAX_MSG_SIZE) {
773 dprintk(1, "%s: invalid length %d\n", __func__, msg->len);
774 return -EINVAL;
775 }
776
777 memset(msg->msg + msg->len, 0, sizeof(msg->msg) - msg->len);
778
779 if (msg->timeout)
780 dprintk(2, "%s: %*ph (wait for 0x%02x%s)\n",
781 __func__, msg->len, msg->msg, msg->reply,
782 !block ? ", nb" : "");
783 else
784 dprintk(2, "%s: %*ph%s\n",
785 __func__, msg->len, msg->msg, !block ? " (nb)" : "");
786
787 if (msg->timeout && msg->len == 1) {
788 dprintk(1, "%s: can't reply to poll msg\n", __func__);
789 return -EINVAL;
790 }
791
792 if (is_raw) {
793 if (!capable(CAP_SYS_RAWIO))
794 return -EPERM;
795 } else {
796
797 if ((adap->log_addrs.flags & CEC_LOG_ADDRS_FL_CDC_ONLY) &&
798 (msg->len == 1 || msg->msg[1] != CEC_MSG_CDC_MESSAGE)) {
799 dprintk(1, "%s: not a CDC message\n", __func__);
800 return -EINVAL;
801 }
802
803 if (msg->len >= 4 && msg->msg[1] == CEC_MSG_CDC_MESSAGE) {
804 msg->msg[2] = adap->phys_addr >> 8;
805 msg->msg[3] = adap->phys_addr & 0xff;
806 }
807
808 if (msg->len == 1) {
809 if (cec_msg_destination(msg) == 0xf) {
810 dprintk(1, "%s: invalid poll message\n",
811 __func__);
812 return -EINVAL;
813 }
814 if (cec_has_log_addr(adap, cec_msg_destination(msg))) {
815
816
817
818
819
820
821
822
823 msg->tx_ts = ktime_get_ns();
824 msg->tx_status = CEC_TX_STATUS_NACK |
825 CEC_TX_STATUS_MAX_RETRIES;
826 msg->tx_nack_cnt = 1;
827 msg->sequence = ++adap->sequence;
828 if (!msg->sequence)
829 msg->sequence = ++adap->sequence;
830 return 0;
831 }
832 }
833 if (msg->len > 1 && !cec_msg_is_broadcast(msg) &&
834 cec_has_log_addr(adap, cec_msg_destination(msg))) {
835 dprintk(1, "%s: destination is the adapter itself\n",
836 __func__);
837 return -EINVAL;
838 }
839 if (msg->len > 1 && adap->is_configured &&
840 !cec_has_log_addr(adap, cec_msg_initiator(msg))) {
841 dprintk(1, "%s: initiator has unknown logical address %d\n",
842 __func__, cec_msg_initiator(msg));
843 return -EINVAL;
844 }
845
846
847
848
849
850
851 if (!adap->is_configured && !adap->is_configuring &&
852 (msg->len > 2 ||
853 cec_msg_destination(msg) != CEC_LOG_ADDR_TV ||
854 (msg->len == 2 && msg->msg[1] != CEC_MSG_IMAGE_VIEW_ON &&
855 msg->msg[1] != CEC_MSG_TEXT_VIEW_ON))) {
856 dprintk(1, "%s: adapter is unconfigured\n", __func__);
857 return -ENONET;
858 }
859 }
860
861 if (!adap->is_configured && !adap->is_configuring) {
862 if (adap->needs_hpd) {
863 dprintk(1, "%s: adapter is unconfigured and needs HPD\n",
864 __func__);
865 return -ENONET;
866 }
867 if (msg->reply) {
868 dprintk(1, "%s: invalid msg->reply\n", __func__);
869 return -EINVAL;
870 }
871 }
872
873 if (adap->transmit_queue_sz >= CEC_MAX_MSG_TX_QUEUE_SZ) {
874 dprintk(2, "%s: transmit queue full\n", __func__);
875 return -EBUSY;
876 }
877
878 data = kzalloc(sizeof(*data), GFP_KERNEL);
879 if (!data)
880 return -ENOMEM;
881
882 msg->sequence = ++adap->sequence;
883 if (!msg->sequence)
884 msg->sequence = ++adap->sequence;
885
886 data->msg = *msg;
887 data->fh = fh;
888 data->adap = adap;
889 data->blocking = block;
890
891 init_completion(&data->c);
892 INIT_DELAYED_WORK(&data->work, cec_wait_timeout);
893
894 if (fh)
895 list_add_tail(&data->xfer_list, &fh->xfer_list);
896
897 list_add_tail(&data->list, &adap->transmit_queue);
898 adap->transmit_queue_sz++;
899 if (!adap->transmitting)
900 wake_up_interruptible(&adap->kthread_waitq);
901
902
903 if (!block)
904 return 0;
905
906
907
908
909 mutex_unlock(&adap->lock);
910 wait_for_completion_killable(&data->c);
911 if (!data->completed)
912 cancel_delayed_work_sync(&data->work);
913 mutex_lock(&adap->lock);
914
915
916 if (!data->completed)
917 cec_data_cancel(data, CEC_TX_STATUS_ABORTED);
918
919
920 *msg = data->msg;
921 kfree(data);
922 return 0;
923 }
924
925
926 int cec_transmit_msg(struct cec_adapter *adap, struct cec_msg *msg,
927 bool block)
928 {
929 int ret;
930
931 mutex_lock(&adap->lock);
932 ret = cec_transmit_msg_fh(adap, msg, NULL, block);
933 mutex_unlock(&adap->lock);
934 return ret;
935 }
936 EXPORT_SYMBOL_GPL(cec_transmit_msg);
937
938
939
940
941
942
943 static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg,
944 bool is_reply);
945
946 #define DIRECTED 0x80
947 #define BCAST1_4 0x40
948 #define BCAST2_0 0x20
949 #define BCAST (BCAST1_4 | BCAST2_0)
950 #define BOTH (BCAST | DIRECTED)
951
952
953
954
955
956
957 static const u8 cec_msg_size[256] = {
958 [CEC_MSG_ACTIVE_SOURCE] = 4 | BCAST,
959 [CEC_MSG_IMAGE_VIEW_ON] = 2 | DIRECTED,
960 [CEC_MSG_TEXT_VIEW_ON] = 2 | DIRECTED,
961 [CEC_MSG_INACTIVE_SOURCE] = 4 | DIRECTED,
962 [CEC_MSG_REQUEST_ACTIVE_SOURCE] = 2 | BCAST,
963 [CEC_MSG_ROUTING_CHANGE] = 6 | BCAST,
964 [CEC_MSG_ROUTING_INFORMATION] = 4 | BCAST,
965 [CEC_MSG_SET_STREAM_PATH] = 4 | BCAST,
966 [CEC_MSG_STANDBY] = 2 | BOTH,
967 [CEC_MSG_RECORD_OFF] = 2 | DIRECTED,
968 [CEC_MSG_RECORD_ON] = 3 | DIRECTED,
969 [CEC_MSG_RECORD_STATUS] = 3 | DIRECTED,
970 [CEC_MSG_RECORD_TV_SCREEN] = 2 | DIRECTED,
971 [CEC_MSG_CLEAR_ANALOGUE_TIMER] = 13 | DIRECTED,
972 [CEC_MSG_CLEAR_DIGITAL_TIMER] = 16 | DIRECTED,
973 [CEC_MSG_CLEAR_EXT_TIMER] = 13 | DIRECTED,
974 [CEC_MSG_SET_ANALOGUE_TIMER] = 13 | DIRECTED,
975 [CEC_MSG_SET_DIGITAL_TIMER] = 16 | DIRECTED,
976 [CEC_MSG_SET_EXT_TIMER] = 13 | DIRECTED,
977 [CEC_MSG_SET_TIMER_PROGRAM_TITLE] = 2 | DIRECTED,
978 [CEC_MSG_TIMER_CLEARED_STATUS] = 3 | DIRECTED,
979 [CEC_MSG_TIMER_STATUS] = 3 | DIRECTED,
980 [CEC_MSG_CEC_VERSION] = 3 | DIRECTED,
981 [CEC_MSG_GET_CEC_VERSION] = 2 | DIRECTED,
982 [CEC_MSG_GIVE_PHYSICAL_ADDR] = 2 | DIRECTED,
983 [CEC_MSG_GET_MENU_LANGUAGE] = 2 | DIRECTED,
984 [CEC_MSG_REPORT_PHYSICAL_ADDR] = 5 | BCAST,
985 [CEC_MSG_SET_MENU_LANGUAGE] = 5 | BCAST,
986 [CEC_MSG_REPORT_FEATURES] = 6 | BCAST,
987 [CEC_MSG_GIVE_FEATURES] = 2 | DIRECTED,
988 [CEC_MSG_DECK_CONTROL] = 3 | DIRECTED,
989 [CEC_MSG_DECK_STATUS] = 3 | DIRECTED,
990 [CEC_MSG_GIVE_DECK_STATUS] = 3 | DIRECTED,
991 [CEC_MSG_PLAY] = 3 | DIRECTED,
992 [CEC_MSG_GIVE_TUNER_DEVICE_STATUS] = 3 | DIRECTED,
993 [CEC_MSG_SELECT_ANALOGUE_SERVICE] = 6 | DIRECTED,
994 [CEC_MSG_SELECT_DIGITAL_SERVICE] = 9 | DIRECTED,
995 [CEC_MSG_TUNER_DEVICE_STATUS] = 7 | DIRECTED,
996 [CEC_MSG_TUNER_STEP_DECREMENT] = 2 | DIRECTED,
997 [CEC_MSG_TUNER_STEP_INCREMENT] = 2 | DIRECTED,
998 [CEC_MSG_DEVICE_VENDOR_ID] = 5 | BCAST,
999 [CEC_MSG_GIVE_DEVICE_VENDOR_ID] = 2 | DIRECTED,
1000 [CEC_MSG_VENDOR_COMMAND] = 2 | DIRECTED,
1001 [CEC_MSG_VENDOR_COMMAND_WITH_ID] = 5 | BOTH,
1002 [CEC_MSG_VENDOR_REMOTE_BUTTON_DOWN] = 2 | BOTH,
1003 [CEC_MSG_VENDOR_REMOTE_BUTTON_UP] = 2 | BOTH,
1004 [CEC_MSG_SET_OSD_STRING] = 3 | DIRECTED,
1005 [CEC_MSG_GIVE_OSD_NAME] = 2 | DIRECTED,
1006 [CEC_MSG_SET_OSD_NAME] = 2 | DIRECTED,
1007 [CEC_MSG_MENU_REQUEST] = 3 | DIRECTED,
1008 [CEC_MSG_MENU_STATUS] = 3 | DIRECTED,
1009 [CEC_MSG_USER_CONTROL_PRESSED] = 3 | DIRECTED,
1010 [CEC_MSG_USER_CONTROL_RELEASED] = 2 | DIRECTED,
1011 [CEC_MSG_GIVE_DEVICE_POWER_STATUS] = 2 | DIRECTED,
1012 [CEC_MSG_REPORT_POWER_STATUS] = 3 | DIRECTED | BCAST2_0,
1013 [CEC_MSG_FEATURE_ABORT] = 4 | DIRECTED,
1014 [CEC_MSG_ABORT] = 2 | DIRECTED,
1015 [CEC_MSG_GIVE_AUDIO_STATUS] = 2 | DIRECTED,
1016 [CEC_MSG_GIVE_SYSTEM_AUDIO_MODE_STATUS] = 2 | DIRECTED,
1017 [CEC_MSG_REPORT_AUDIO_STATUS] = 3 | DIRECTED,
1018 [CEC_MSG_REPORT_SHORT_AUDIO_DESCRIPTOR] = 2 | DIRECTED,
1019 [CEC_MSG_REQUEST_SHORT_AUDIO_DESCRIPTOR] = 2 | DIRECTED,
1020 [CEC_MSG_SET_SYSTEM_AUDIO_MODE] = 3 | BOTH,
1021 [CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST] = 2 | DIRECTED,
1022 [CEC_MSG_SYSTEM_AUDIO_MODE_STATUS] = 3 | DIRECTED,
1023 [CEC_MSG_SET_AUDIO_RATE] = 3 | DIRECTED,
1024 [CEC_MSG_INITIATE_ARC] = 2 | DIRECTED,
1025 [CEC_MSG_REPORT_ARC_INITIATED] = 2 | DIRECTED,
1026 [CEC_MSG_REPORT_ARC_TERMINATED] = 2 | DIRECTED,
1027 [CEC_MSG_REQUEST_ARC_INITIATION] = 2 | DIRECTED,
1028 [CEC_MSG_REQUEST_ARC_TERMINATION] = 2 | DIRECTED,
1029 [CEC_MSG_TERMINATE_ARC] = 2 | DIRECTED,
1030 [CEC_MSG_REQUEST_CURRENT_LATENCY] = 4 | BCAST,
1031 [CEC_MSG_REPORT_CURRENT_LATENCY] = 6 | BCAST,
1032 [CEC_MSG_CDC_MESSAGE] = 2 | BCAST,
1033 };
1034
1035
1036 void cec_received_msg_ts(struct cec_adapter *adap,
1037 struct cec_msg *msg, ktime_t ts)
1038 {
1039 struct cec_data *data;
1040 u8 msg_init = cec_msg_initiator(msg);
1041 u8 msg_dest = cec_msg_destination(msg);
1042 u8 cmd = msg->msg[1];
1043 bool is_reply = false;
1044 bool valid_la = true;
1045 u8 min_len = 0;
1046
1047 if (WARN_ON(!msg->len || msg->len > CEC_MAX_MSG_SIZE))
1048 return;
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061 if (msg_init != CEC_LOG_ADDR_UNREGISTERED &&
1062 cec_has_log_addr(adap, msg_init))
1063 return;
1064
1065 msg->rx_ts = ktime_to_ns(ts);
1066 msg->rx_status = CEC_RX_STATUS_OK;
1067 msg->sequence = msg->reply = msg->timeout = 0;
1068 msg->tx_status = 0;
1069 msg->tx_ts = 0;
1070 msg->tx_arb_lost_cnt = 0;
1071 msg->tx_nack_cnt = 0;
1072 msg->tx_low_drive_cnt = 0;
1073 msg->tx_error_cnt = 0;
1074 msg->flags = 0;
1075 memset(msg->msg + msg->len, 0, sizeof(msg->msg) - msg->len);
1076
1077 mutex_lock(&adap->lock);
1078 dprintk(2, "%s: %*ph\n", __func__, msg->len, msg->msg);
1079
1080 adap->last_initiator = 0xff;
1081
1082
1083 if (!cec_msg_is_broadcast(msg))
1084 valid_la = cec_has_log_addr(adap, msg_dest);
1085
1086
1087
1088
1089
1090
1091
1092 if (valid_la && msg->len > 1 && cec_msg_size[cmd]) {
1093 u8 dir_fl = cec_msg_size[cmd] & BOTH;
1094
1095 min_len = cec_msg_size[cmd] & 0x1f;
1096 if (msg->len < min_len)
1097 valid_la = false;
1098 else if (!cec_msg_is_broadcast(msg) && !(dir_fl & DIRECTED))
1099 valid_la = false;
1100 else if (cec_msg_is_broadcast(msg) && !(dir_fl & BCAST))
1101 valid_la = false;
1102 else if (cec_msg_is_broadcast(msg) &&
1103 adap->log_addrs.cec_version < CEC_OP_CEC_VERSION_2_0 &&
1104 !(dir_fl & BCAST1_4))
1105 valid_la = false;
1106 }
1107 if (valid_la && min_len) {
1108
1109 switch (cmd) {
1110 case CEC_MSG_TIMER_STATUS:
1111 if (msg->msg[2] & 0x10) {
1112 switch (msg->msg[2] & 0xf) {
1113 case CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE:
1114 case CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE:
1115 if (msg->len < 5)
1116 valid_la = false;
1117 break;
1118 }
1119 } else if ((msg->msg[2] & 0xf) == CEC_OP_PROG_ERROR_DUPLICATE) {
1120 if (msg->len < 5)
1121 valid_la = false;
1122 }
1123 break;
1124 case CEC_MSG_RECORD_ON:
1125 switch (msg->msg[2]) {
1126 case CEC_OP_RECORD_SRC_OWN:
1127 break;
1128 case CEC_OP_RECORD_SRC_DIGITAL:
1129 if (msg->len < 10)
1130 valid_la = false;
1131 break;
1132 case CEC_OP_RECORD_SRC_ANALOG:
1133 if (msg->len < 7)
1134 valid_la = false;
1135 break;
1136 case CEC_OP_RECORD_SRC_EXT_PLUG:
1137 if (msg->len < 4)
1138 valid_la = false;
1139 break;
1140 case CEC_OP_RECORD_SRC_EXT_PHYS_ADDR:
1141 if (msg->len < 5)
1142 valid_la = false;
1143 break;
1144 }
1145 break;
1146 }
1147 }
1148
1149
1150 if (valid_la && msg->len > 1 && cmd != CEC_MSG_CDC_MESSAGE) {
1151 bool abort = cmd == CEC_MSG_FEATURE_ABORT;
1152
1153
1154 if (abort)
1155 cmd = msg->msg[2];
1156
1157
1158
1159
1160
1161 list_for_each_entry(data, &adap->wait_queue, list) {
1162 struct cec_msg *dst = &data->msg;
1163
1164
1165
1166
1167
1168
1169 if (!abort && dst->msg[1] == CEC_MSG_INITIATE_ARC &&
1170 (cmd == CEC_MSG_REPORT_ARC_INITIATED ||
1171 cmd == CEC_MSG_REPORT_ARC_TERMINATED) &&
1172 (dst->reply == CEC_MSG_REPORT_ARC_INITIATED ||
1173 dst->reply == CEC_MSG_REPORT_ARC_TERMINATED))
1174 dst->reply = cmd;
1175
1176
1177 if ((abort && cmd != dst->msg[1]) ||
1178 (!abort && cmd != dst->reply))
1179 continue;
1180
1181
1182 if (msg_init != cec_msg_destination(dst) &&
1183 !cec_msg_is_broadcast(dst))
1184 continue;
1185
1186
1187 memcpy(dst->msg, msg->msg, msg->len);
1188 dst->len = msg->len;
1189 dst->rx_ts = msg->rx_ts;
1190 dst->rx_status = msg->rx_status;
1191 if (abort)
1192 dst->rx_status |= CEC_RX_STATUS_FEATURE_ABORT;
1193 msg->flags = dst->flags;
1194
1195 list_del_init(&data->list);
1196
1197
1198 if (!cancel_delayed_work(&data->work)) {
1199 mutex_unlock(&adap->lock);
1200 flush_scheduled_work();
1201 mutex_lock(&adap->lock);
1202 }
1203
1204
1205
1206
1207 if (data->fh)
1208 is_reply = true;
1209 cec_data_completed(data);
1210 break;
1211 }
1212 }
1213 mutex_unlock(&adap->lock);
1214
1215
1216 cec_queue_msg_monitor(adap, msg, valid_la);
1217
1218
1219 if (!valid_la || msg->len <= 1)
1220 return;
1221
1222 if (adap->log_addrs.log_addr_mask == 0)
1223 return;
1224
1225
1226
1227
1228
1229
1230 cec_receive_notify(adap, msg, is_reply);
1231 }
1232 EXPORT_SYMBOL_GPL(cec_received_msg_ts);
1233
1234
1235
1236
1237
1238
1239
1240
1241 static int cec_config_log_addr(struct cec_adapter *adap,
1242 unsigned int idx,
1243 unsigned int log_addr)
1244 {
1245 struct cec_log_addrs *las = &adap->log_addrs;
1246 struct cec_msg msg = { };
1247 const unsigned int max_retries = 2;
1248 unsigned int i;
1249 int err;
1250
1251 if (cec_has_log_addr(adap, log_addr))
1252 return 0;
1253
1254
1255 msg.len = 1;
1256 msg.msg[0] = (log_addr << 4) | log_addr;
1257
1258 for (i = 0; i < max_retries; i++) {
1259 err = cec_transmit_msg_fh(adap, &msg, NULL, true);
1260
1261
1262
1263
1264
1265 if (!adap->is_configuring)
1266 return -EINTR;
1267
1268 if (err)
1269 return err;
1270
1271
1272
1273
1274
1275 if (msg.tx_status & CEC_TX_STATUS_ABORTED)
1276 return -EINTR;
1277 if (msg.tx_status & CEC_TX_STATUS_OK)
1278 return 0;
1279 if (msg.tx_status & CEC_TX_STATUS_NACK)
1280 break;
1281
1282
1283
1284
1285
1286 }
1287
1288
1289
1290
1291
1292
1293
1294 if (i == max_retries)
1295 return 0;
1296
1297
1298
1299
1300
1301 err = adap->ops->adap_log_addr(adap, log_addr);
1302 if (err)
1303 return err;
1304
1305 las->log_addr[idx] = log_addr;
1306 las->log_addr_mask |= 1 << log_addr;
1307 adap->phys_addrs[log_addr] = adap->phys_addr;
1308 return 1;
1309 }
1310
1311
1312
1313
1314
1315
1316
1317 static void cec_adap_unconfigure(struct cec_adapter *adap)
1318 {
1319 if (!adap->needs_hpd ||
1320 adap->phys_addr != CEC_PHYS_ADDR_INVALID)
1321 WARN_ON(adap->ops->adap_log_addr(adap, CEC_LOG_ADDR_INVALID));
1322 adap->log_addrs.log_addr_mask = 0;
1323 adap->is_configuring = false;
1324 adap->is_configured = false;
1325 memset(adap->phys_addrs, 0xff, sizeof(adap->phys_addrs));
1326 cec_flush(adap);
1327 wake_up_interruptible(&adap->kthread_waitq);
1328 cec_post_state_event(adap);
1329 }
1330
1331
1332
1333
1334 static int cec_config_thread_func(void *arg)
1335 {
1336
1337 static const u8 tv_log_addrs[] = {
1338 CEC_LOG_ADDR_TV, CEC_LOG_ADDR_SPECIFIC,
1339 CEC_LOG_ADDR_INVALID
1340 };
1341 static const u8 record_log_addrs[] = {
1342 CEC_LOG_ADDR_RECORD_1, CEC_LOG_ADDR_RECORD_2,
1343 CEC_LOG_ADDR_RECORD_3,
1344 CEC_LOG_ADDR_BACKUP_1, CEC_LOG_ADDR_BACKUP_2,
1345 CEC_LOG_ADDR_INVALID
1346 };
1347 static const u8 tuner_log_addrs[] = {
1348 CEC_LOG_ADDR_TUNER_1, CEC_LOG_ADDR_TUNER_2,
1349 CEC_LOG_ADDR_TUNER_3, CEC_LOG_ADDR_TUNER_4,
1350 CEC_LOG_ADDR_BACKUP_1, CEC_LOG_ADDR_BACKUP_2,
1351 CEC_LOG_ADDR_INVALID
1352 };
1353 static const u8 playback_log_addrs[] = {
1354 CEC_LOG_ADDR_PLAYBACK_1, CEC_LOG_ADDR_PLAYBACK_2,
1355 CEC_LOG_ADDR_PLAYBACK_3,
1356 CEC_LOG_ADDR_BACKUP_1, CEC_LOG_ADDR_BACKUP_2,
1357 CEC_LOG_ADDR_INVALID
1358 };
1359 static const u8 audiosystem_log_addrs[] = {
1360 CEC_LOG_ADDR_AUDIOSYSTEM,
1361 CEC_LOG_ADDR_INVALID
1362 };
1363 static const u8 specific_use_log_addrs[] = {
1364 CEC_LOG_ADDR_SPECIFIC,
1365 CEC_LOG_ADDR_BACKUP_1, CEC_LOG_ADDR_BACKUP_2,
1366 CEC_LOG_ADDR_INVALID
1367 };
1368 static const u8 *type2addrs[6] = {
1369 [CEC_LOG_ADDR_TYPE_TV] = tv_log_addrs,
1370 [CEC_LOG_ADDR_TYPE_RECORD] = record_log_addrs,
1371 [CEC_LOG_ADDR_TYPE_TUNER] = tuner_log_addrs,
1372 [CEC_LOG_ADDR_TYPE_PLAYBACK] = playback_log_addrs,
1373 [CEC_LOG_ADDR_TYPE_AUDIOSYSTEM] = audiosystem_log_addrs,
1374 [CEC_LOG_ADDR_TYPE_SPECIFIC] = specific_use_log_addrs,
1375 };
1376 static const u16 type2mask[] = {
1377 [CEC_LOG_ADDR_TYPE_TV] = CEC_LOG_ADDR_MASK_TV,
1378 [CEC_LOG_ADDR_TYPE_RECORD] = CEC_LOG_ADDR_MASK_RECORD,
1379 [CEC_LOG_ADDR_TYPE_TUNER] = CEC_LOG_ADDR_MASK_TUNER,
1380 [CEC_LOG_ADDR_TYPE_PLAYBACK] = CEC_LOG_ADDR_MASK_PLAYBACK,
1381 [CEC_LOG_ADDR_TYPE_AUDIOSYSTEM] = CEC_LOG_ADDR_MASK_AUDIOSYSTEM,
1382 [CEC_LOG_ADDR_TYPE_SPECIFIC] = CEC_LOG_ADDR_MASK_SPECIFIC,
1383 };
1384 struct cec_adapter *adap = arg;
1385 struct cec_log_addrs *las = &adap->log_addrs;
1386 int err;
1387 int i, j;
1388
1389 mutex_lock(&adap->lock);
1390 dprintk(1, "physical address: %x.%x.%x.%x, claim %d logical addresses\n",
1391 cec_phys_addr_exp(adap->phys_addr), las->num_log_addrs);
1392 las->log_addr_mask = 0;
1393
1394 if (las->log_addr_type[0] == CEC_LOG_ADDR_TYPE_UNREGISTERED)
1395 goto configured;
1396
1397 for (i = 0; i < las->num_log_addrs; i++) {
1398 unsigned int type = las->log_addr_type[i];
1399 const u8 *la_list;
1400 u8 last_la;
1401
1402
1403
1404
1405
1406
1407 if (adap->phys_addr && type == CEC_LOG_ADDR_TYPE_TV)
1408 type = CEC_LOG_ADDR_TYPE_SPECIFIC;
1409
1410 la_list = type2addrs[type];
1411 last_la = las->log_addr[i];
1412 las->log_addr[i] = CEC_LOG_ADDR_INVALID;
1413 if (last_la == CEC_LOG_ADDR_INVALID ||
1414 last_la == CEC_LOG_ADDR_UNREGISTERED ||
1415 !((1 << last_la) & type2mask[type]))
1416 last_la = la_list[0];
1417
1418 err = cec_config_log_addr(adap, i, last_la);
1419 if (err > 0)
1420 continue;
1421
1422 if (err < 0)
1423 goto unconfigure;
1424
1425 for (j = 0; la_list[j] != CEC_LOG_ADDR_INVALID; j++) {
1426
1427 if (la_list[j] == last_la)
1428 continue;
1429
1430 if ((la_list[j] == CEC_LOG_ADDR_BACKUP_1 ||
1431 la_list[j] == CEC_LOG_ADDR_BACKUP_2) &&
1432 las->cec_version < CEC_OP_CEC_VERSION_2_0)
1433 continue;
1434
1435 err = cec_config_log_addr(adap, i, la_list[j]);
1436 if (err == 0)
1437 continue;
1438 if (err < 0)
1439 goto unconfigure;
1440
1441 break;
1442 }
1443
1444 if (la_list[j] == CEC_LOG_ADDR_INVALID)
1445 dprintk(1, "could not claim LA %d\n", i);
1446 }
1447
1448 if (adap->log_addrs.log_addr_mask == 0 &&
1449 !(las->flags & CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK))
1450 goto unconfigure;
1451
1452 configured:
1453 if (adap->log_addrs.log_addr_mask == 0) {
1454
1455 las->log_addr[0] = CEC_LOG_ADDR_UNREGISTERED;
1456 las->log_addr_mask = 1 << las->log_addr[0];
1457 for (i = 1; i < las->num_log_addrs; i++)
1458 las->log_addr[i] = CEC_LOG_ADDR_INVALID;
1459 }
1460 for (i = las->num_log_addrs; i < CEC_MAX_LOG_ADDRS; i++)
1461 las->log_addr[i] = CEC_LOG_ADDR_INVALID;
1462 adap->is_configured = true;
1463 adap->is_configuring = false;
1464 cec_post_state_event(adap);
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476 for (i = 0; i < las->num_log_addrs; i++) {
1477 struct cec_msg msg = {};
1478
1479 if (las->log_addr[i] == CEC_LOG_ADDR_INVALID ||
1480 (las->flags & CEC_LOG_ADDRS_FL_CDC_ONLY))
1481 continue;
1482
1483 msg.msg[0] = (las->log_addr[i] << 4) | 0x0f;
1484
1485
1486 if (las->log_addr[i] != CEC_LOG_ADDR_UNREGISTERED &&
1487 adap->log_addrs.cec_version >= CEC_OP_CEC_VERSION_2_0) {
1488 cec_fill_msg_report_features(adap, &msg, i);
1489 cec_transmit_msg_fh(adap, &msg, NULL, false);
1490 }
1491
1492
1493 cec_msg_report_physical_addr(&msg, adap->phys_addr,
1494 las->primary_device_type[i]);
1495 dprintk(1, "config: la %d pa %x.%x.%x.%x\n",
1496 las->log_addr[i],
1497 cec_phys_addr_exp(adap->phys_addr));
1498 cec_transmit_msg_fh(adap, &msg, NULL, false);
1499
1500
1501 if (adap->log_addrs.vendor_id != CEC_VENDOR_ID_NONE) {
1502 cec_msg_device_vendor_id(&msg,
1503 adap->log_addrs.vendor_id);
1504 cec_transmit_msg_fh(adap, &msg, NULL, false);
1505 }
1506 }
1507 adap->kthread_config = NULL;
1508 complete(&adap->config_completion);
1509 mutex_unlock(&adap->lock);
1510 return 0;
1511
1512 unconfigure:
1513 for (i = 0; i < las->num_log_addrs; i++)
1514 las->log_addr[i] = CEC_LOG_ADDR_INVALID;
1515 cec_adap_unconfigure(adap);
1516 adap->kthread_config = NULL;
1517 mutex_unlock(&adap->lock);
1518 complete(&adap->config_completion);
1519 return 0;
1520 }
1521
1522
1523
1524
1525
1526
1527
1528 static void cec_claim_log_addrs(struct cec_adapter *adap, bool block)
1529 {
1530 if (WARN_ON(adap->is_configuring || adap->is_configured))
1531 return;
1532
1533 init_completion(&adap->config_completion);
1534
1535
1536 adap->is_configuring = true;
1537 adap->kthread_config = kthread_run(cec_config_thread_func, adap,
1538 "ceccfg-%s", adap->name);
1539 if (IS_ERR(adap->kthread_config)) {
1540 adap->kthread_config = NULL;
1541 } else if (block) {
1542 mutex_unlock(&adap->lock);
1543 wait_for_completion(&adap->config_completion);
1544 mutex_lock(&adap->lock);
1545 }
1546 }
1547
1548
1549
1550
1551
1552 void __cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block)
1553 {
1554 if (phys_addr == adap->phys_addr)
1555 return;
1556 if (phys_addr != CEC_PHYS_ADDR_INVALID && adap->devnode.unregistered)
1557 return;
1558
1559 dprintk(1, "new physical address %x.%x.%x.%x\n",
1560 cec_phys_addr_exp(phys_addr));
1561 if (phys_addr == CEC_PHYS_ADDR_INVALID ||
1562 adap->phys_addr != CEC_PHYS_ADDR_INVALID) {
1563 adap->phys_addr = CEC_PHYS_ADDR_INVALID;
1564 cec_post_state_event(adap);
1565 cec_adap_unconfigure(adap);
1566
1567 if (adap->monitor_all_cnt)
1568 WARN_ON(call_op(adap, adap_monitor_all_enable, false));
1569 mutex_lock(&adap->devnode.lock);
1570 if (adap->needs_hpd || list_empty(&adap->devnode.fhs)) {
1571 WARN_ON(adap->ops->adap_enable(adap, false));
1572 adap->transmit_in_progress = false;
1573 wake_up_interruptible(&adap->kthread_waitq);
1574 }
1575 mutex_unlock(&adap->devnode.lock);
1576 if (phys_addr == CEC_PHYS_ADDR_INVALID)
1577 return;
1578 }
1579
1580 mutex_lock(&adap->devnode.lock);
1581 adap->last_initiator = 0xff;
1582 adap->transmit_in_progress = false;
1583
1584 if ((adap->needs_hpd || list_empty(&adap->devnode.fhs)) &&
1585 adap->ops->adap_enable(adap, true)) {
1586 mutex_unlock(&adap->devnode.lock);
1587 return;
1588 }
1589
1590 if (adap->monitor_all_cnt &&
1591 call_op(adap, adap_monitor_all_enable, true)) {
1592 if (adap->needs_hpd || list_empty(&adap->devnode.fhs))
1593 WARN_ON(adap->ops->adap_enable(adap, false));
1594 mutex_unlock(&adap->devnode.lock);
1595 return;
1596 }
1597 mutex_unlock(&adap->devnode.lock);
1598
1599 adap->phys_addr = phys_addr;
1600 cec_post_state_event(adap);
1601 if (adap->log_addrs.num_log_addrs)
1602 cec_claim_log_addrs(adap, block);
1603 }
1604
1605 void cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block)
1606 {
1607 if (IS_ERR_OR_NULL(adap))
1608 return;
1609
1610 mutex_lock(&adap->lock);
1611 __cec_s_phys_addr(adap, phys_addr, block);
1612 mutex_unlock(&adap->lock);
1613 }
1614 EXPORT_SYMBOL_GPL(cec_s_phys_addr);
1615
1616 void cec_s_phys_addr_from_edid(struct cec_adapter *adap,
1617 const struct edid *edid)
1618 {
1619 u16 pa = CEC_PHYS_ADDR_INVALID;
1620
1621 if (edid && edid->extensions)
1622 pa = cec_get_edid_phys_addr((const u8 *)edid,
1623 EDID_LENGTH * (edid->extensions + 1), NULL);
1624 cec_s_phys_addr(adap, pa, false);
1625 }
1626 EXPORT_SYMBOL_GPL(cec_s_phys_addr_from_edid);
1627
1628 void cec_s_conn_info(struct cec_adapter *adap,
1629 const struct cec_connector_info *conn_info)
1630 {
1631 if (IS_ERR_OR_NULL(adap))
1632 return;
1633
1634 if (!(adap->capabilities & CEC_CAP_CONNECTOR_INFO))
1635 return;
1636
1637 mutex_lock(&adap->lock);
1638 if (conn_info)
1639 adap->conn_info = *conn_info;
1640 else
1641 memset(&adap->conn_info, 0, sizeof(adap->conn_info));
1642 cec_post_state_event(adap);
1643 mutex_unlock(&adap->lock);
1644 }
1645 EXPORT_SYMBOL_GPL(cec_s_conn_info);
1646
1647
1648
1649
1650
1651
1652 int __cec_s_log_addrs(struct cec_adapter *adap,
1653 struct cec_log_addrs *log_addrs, bool block)
1654 {
1655 u16 type_mask = 0;
1656 int i;
1657
1658 if (adap->devnode.unregistered)
1659 return -ENODEV;
1660
1661 if (!log_addrs || log_addrs->num_log_addrs == 0) {
1662 cec_adap_unconfigure(adap);
1663 adap->log_addrs.num_log_addrs = 0;
1664 for (i = 0; i < CEC_MAX_LOG_ADDRS; i++)
1665 adap->log_addrs.log_addr[i] = CEC_LOG_ADDR_INVALID;
1666 adap->log_addrs.osd_name[0] = '\0';
1667 adap->log_addrs.vendor_id = CEC_VENDOR_ID_NONE;
1668 adap->log_addrs.cec_version = CEC_OP_CEC_VERSION_2_0;
1669 return 0;
1670 }
1671
1672 if (log_addrs->flags & CEC_LOG_ADDRS_FL_CDC_ONLY) {
1673
1674
1675
1676
1677 log_addrs->num_log_addrs = 1;
1678 log_addrs->osd_name[0] = '\0';
1679 log_addrs->vendor_id = CEC_VENDOR_ID_NONE;
1680 log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_UNREGISTERED;
1681
1682
1683
1684
1685
1686
1687
1688
1689 log_addrs->primary_device_type[0] = CEC_OP_PRIM_DEVTYPE_SWITCH;
1690 log_addrs->all_device_types[0] = 0;
1691 log_addrs->features[0][0] = 0;
1692 log_addrs->features[0][1] = 0;
1693 }
1694
1695
1696 log_addrs->osd_name[sizeof(log_addrs->osd_name) - 1] = '\0';
1697
1698
1699 if (log_addrs->num_log_addrs > adap->available_log_addrs) {
1700 dprintk(1, "num_log_addrs > %d\n", adap->available_log_addrs);
1701 return -EINVAL;
1702 }
1703
1704
1705
1706
1707
1708 if (log_addrs->vendor_id != CEC_VENDOR_ID_NONE &&
1709 (log_addrs->vendor_id & 0xff000000) != 0) {
1710 dprintk(1, "invalid vendor ID\n");
1711 return -EINVAL;
1712 }
1713
1714 if (log_addrs->cec_version != CEC_OP_CEC_VERSION_1_4 &&
1715 log_addrs->cec_version != CEC_OP_CEC_VERSION_2_0) {
1716 dprintk(1, "invalid CEC version\n");
1717 return -EINVAL;
1718 }
1719
1720 if (log_addrs->num_log_addrs > 1)
1721 for (i = 0; i < log_addrs->num_log_addrs; i++)
1722 if (log_addrs->log_addr_type[i] ==
1723 CEC_LOG_ADDR_TYPE_UNREGISTERED) {
1724 dprintk(1, "num_log_addrs > 1 can't be combined with unregistered LA\n");
1725 return -EINVAL;
1726 }
1727
1728 for (i = 0; i < log_addrs->num_log_addrs; i++) {
1729 const u8 feature_sz = ARRAY_SIZE(log_addrs->features[0]);
1730 u8 *features = log_addrs->features[i];
1731 bool op_is_dev_features = false;
1732 unsigned j;
1733
1734 log_addrs->log_addr[i] = CEC_LOG_ADDR_INVALID;
1735 if (type_mask & (1 << log_addrs->log_addr_type[i])) {
1736 dprintk(1, "duplicate logical address type\n");
1737 return -EINVAL;
1738 }
1739 type_mask |= 1 << log_addrs->log_addr_type[i];
1740 if ((type_mask & (1 << CEC_LOG_ADDR_TYPE_RECORD)) &&
1741 (type_mask & (1 << CEC_LOG_ADDR_TYPE_PLAYBACK))) {
1742
1743 dprintk(1, "invalid record + playback combination\n");
1744 return -EINVAL;
1745 }
1746 if (log_addrs->primary_device_type[i] >
1747 CEC_OP_PRIM_DEVTYPE_PROCESSOR) {
1748 dprintk(1, "unknown primary device type\n");
1749 return -EINVAL;
1750 }
1751 if (log_addrs->primary_device_type[i] == 2) {
1752 dprintk(1, "invalid primary device type\n");
1753 return -EINVAL;
1754 }
1755 if (log_addrs->log_addr_type[i] > CEC_LOG_ADDR_TYPE_UNREGISTERED) {
1756 dprintk(1, "unknown logical address type\n");
1757 return -EINVAL;
1758 }
1759 for (j = 0; j < feature_sz; j++) {
1760 if ((features[j] & 0x80) == 0) {
1761 if (op_is_dev_features)
1762 break;
1763 op_is_dev_features = true;
1764 }
1765 }
1766 if (!op_is_dev_features || j == feature_sz) {
1767 dprintk(1, "malformed features\n");
1768 return -EINVAL;
1769 }
1770
1771 memset(features + j + 1, 0, feature_sz - j - 1);
1772 }
1773
1774 if (log_addrs->cec_version >= CEC_OP_CEC_VERSION_2_0) {
1775 if (log_addrs->num_log_addrs > 2) {
1776 dprintk(1, "CEC 2.0 allows no more than 2 logical addresses\n");
1777 return -EINVAL;
1778 }
1779 if (log_addrs->num_log_addrs == 2) {
1780 if (!(type_mask & ((1 << CEC_LOG_ADDR_TYPE_AUDIOSYSTEM) |
1781 (1 << CEC_LOG_ADDR_TYPE_TV)))) {
1782 dprintk(1, "two LAs is only allowed for audiosystem and TV\n");
1783 return -EINVAL;
1784 }
1785 if (!(type_mask & ((1 << CEC_LOG_ADDR_TYPE_PLAYBACK) |
1786 (1 << CEC_LOG_ADDR_TYPE_RECORD)))) {
1787 dprintk(1, "an audiosystem/TV can only be combined with record or playback\n");
1788 return -EINVAL;
1789 }
1790 }
1791 }
1792
1793
1794 for (i = log_addrs->num_log_addrs; i < CEC_MAX_LOG_ADDRS; i++) {
1795 log_addrs->primary_device_type[i] = 0;
1796 log_addrs->log_addr_type[i] = 0;
1797 log_addrs->all_device_types[i] = 0;
1798 memset(log_addrs->features[i], 0,
1799 sizeof(log_addrs->features[i]));
1800 }
1801
1802 log_addrs->log_addr_mask = adap->log_addrs.log_addr_mask;
1803 adap->log_addrs = *log_addrs;
1804 if (adap->phys_addr != CEC_PHYS_ADDR_INVALID)
1805 cec_claim_log_addrs(adap, block);
1806 return 0;
1807 }
1808
1809 int cec_s_log_addrs(struct cec_adapter *adap,
1810 struct cec_log_addrs *log_addrs, bool block)
1811 {
1812 int err;
1813
1814 mutex_lock(&adap->lock);
1815 err = __cec_s_log_addrs(adap, log_addrs, block);
1816 mutex_unlock(&adap->lock);
1817 return err;
1818 }
1819 EXPORT_SYMBOL_GPL(cec_s_log_addrs);
1820
1821
1822
1823
1824 static void cec_fill_msg_report_features(struct cec_adapter *adap,
1825 struct cec_msg *msg,
1826 unsigned int la_idx)
1827 {
1828 const struct cec_log_addrs *las = &adap->log_addrs;
1829 const u8 *features = las->features[la_idx];
1830 bool op_is_dev_features = false;
1831 unsigned int idx;
1832
1833
1834 msg->msg[0] = (las->log_addr[la_idx] << 4) | 0x0f;
1835 msg->len = 4;
1836 msg->msg[1] = CEC_MSG_REPORT_FEATURES;
1837 msg->msg[2] = adap->log_addrs.cec_version;
1838 msg->msg[3] = las->all_device_types[la_idx];
1839
1840
1841 for (idx = 0; idx < ARRAY_SIZE(las->features[0]); idx++) {
1842 msg->msg[msg->len++] = features[idx];
1843 if ((features[idx] & CEC_OP_FEAT_EXT) == 0) {
1844 if (op_is_dev_features)
1845 break;
1846 op_is_dev_features = true;
1847 }
1848 }
1849 }
1850
1851
1852 static int cec_feature_abort_reason(struct cec_adapter *adap,
1853 struct cec_msg *msg, u8 reason)
1854 {
1855 struct cec_msg tx_msg = { };
1856
1857
1858
1859
1860
1861 if (msg->msg[1] == CEC_MSG_FEATURE_ABORT)
1862 return 0;
1863
1864 if (cec_msg_initiator(msg) == CEC_LOG_ADDR_UNREGISTERED)
1865 return 0;
1866 cec_msg_set_reply_to(&tx_msg, msg);
1867 cec_msg_feature_abort(&tx_msg, msg->msg[1], reason);
1868 return cec_transmit_msg(adap, &tx_msg, false);
1869 }
1870
1871 static int cec_feature_abort(struct cec_adapter *adap, struct cec_msg *msg)
1872 {
1873 return cec_feature_abort_reason(adap, msg,
1874 CEC_OP_ABORT_UNRECOGNIZED_OP);
1875 }
1876
1877 static int cec_feature_refused(struct cec_adapter *adap, struct cec_msg *msg)
1878 {
1879 return cec_feature_abort_reason(adap, msg,
1880 CEC_OP_ABORT_REFUSED);
1881 }
1882
1883
1884
1885
1886
1887
1888
1889
1890 static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg,
1891 bool is_reply)
1892 {
1893 bool is_broadcast = cec_msg_is_broadcast(msg);
1894 u8 dest_laddr = cec_msg_destination(msg);
1895 u8 init_laddr = cec_msg_initiator(msg);
1896 u8 devtype = cec_log_addr2dev(adap, dest_laddr);
1897 int la_idx = cec_log_addr2idx(adap, dest_laddr);
1898 bool from_unregistered = init_laddr == 0xf;
1899 struct cec_msg tx_cec_msg = { };
1900
1901 dprintk(2, "%s: %*ph\n", __func__, msg->len, msg->msg);
1902
1903
1904 if (cec_is_cdc_only(&adap->log_addrs) &&
1905 msg->msg[1] != CEC_MSG_CDC_MESSAGE)
1906 return 0;
1907
1908 if (adap->ops->received) {
1909
1910 if (adap->ops->received(adap, msg) != -ENOMSG)
1911 return 0;
1912 }
1913
1914
1915
1916
1917
1918
1919
1920 switch (msg->msg[1]) {
1921 case CEC_MSG_GET_CEC_VERSION:
1922 case CEC_MSG_ABORT:
1923 case CEC_MSG_GIVE_DEVICE_POWER_STATUS:
1924 case CEC_MSG_GIVE_OSD_NAME:
1925
1926
1927
1928
1929 if (!adap->passthrough && from_unregistered)
1930 return 0;
1931
1932 case CEC_MSG_GIVE_DEVICE_VENDOR_ID:
1933 case CEC_MSG_GIVE_FEATURES:
1934 case CEC_MSG_GIVE_PHYSICAL_ADDR:
1935
1936
1937
1938
1939 if (adap->passthrough)
1940 goto skip_processing;
1941
1942 if (is_broadcast)
1943 return 0;
1944 break;
1945
1946 case CEC_MSG_USER_CONTROL_PRESSED:
1947 case CEC_MSG_USER_CONTROL_RELEASED:
1948
1949 if (is_broadcast || from_unregistered)
1950 goto skip_processing;
1951 break;
1952
1953 case CEC_MSG_REPORT_PHYSICAL_ADDR:
1954
1955
1956
1957
1958
1959
1960 if (!is_broadcast)
1961 goto skip_processing;
1962 break;
1963
1964 default:
1965 break;
1966 }
1967
1968 cec_msg_set_reply_to(&tx_cec_msg, msg);
1969
1970 switch (msg->msg[1]) {
1971
1972 case CEC_MSG_REPORT_PHYSICAL_ADDR: {
1973 u16 pa = (msg->msg[2] << 8) | msg->msg[3];
1974
1975 if (!from_unregistered)
1976 adap->phys_addrs[init_laddr] = pa;
1977 dprintk(1, "reported physical address %x.%x.%x.%x for logical address %d\n",
1978 cec_phys_addr_exp(pa), init_laddr);
1979 break;
1980 }
1981
1982 case CEC_MSG_USER_CONTROL_PRESSED:
1983 if (!(adap->capabilities & CEC_CAP_RC) ||
1984 !(adap->log_addrs.flags & CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU))
1985 break;
1986
1987 #ifdef CONFIG_MEDIA_CEC_RC
1988 switch (msg->msg[2]) {
1989
1990
1991
1992
1993 case 0x60:
1994 if (msg->len == 2)
1995 rc_keydown(adap->rc, RC_PROTO_CEC,
1996 msg->msg[2], 0);
1997 else
1998 rc_keydown(adap->rc, RC_PROTO_CEC,
1999 msg->msg[2] << 8 | msg->msg[3], 0);
2000 break;
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010 case 0x56: case 0x57:
2011 case 0x67: case 0x68: case 0x69: case 0x6a:
2012 break;
2013 default:
2014 rc_keydown(adap->rc, RC_PROTO_CEC, msg->msg[2], 0);
2015 break;
2016 }
2017 #endif
2018 break;
2019
2020 case CEC_MSG_USER_CONTROL_RELEASED:
2021 if (!(adap->capabilities & CEC_CAP_RC) ||
2022 !(adap->log_addrs.flags & CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU))
2023 break;
2024 #ifdef CONFIG_MEDIA_CEC_RC
2025 rc_keyup(adap->rc);
2026 #endif
2027 break;
2028
2029
2030
2031
2032
2033 case CEC_MSG_GET_CEC_VERSION:
2034 cec_msg_cec_version(&tx_cec_msg, adap->log_addrs.cec_version);
2035 return cec_transmit_msg(adap, &tx_cec_msg, false);
2036
2037 case CEC_MSG_GIVE_PHYSICAL_ADDR:
2038
2039 if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH && dest_laddr == 15)
2040 return 0;
2041 cec_msg_report_physical_addr(&tx_cec_msg, adap->phys_addr, devtype);
2042 return cec_transmit_msg(adap, &tx_cec_msg, false);
2043
2044 case CEC_MSG_GIVE_DEVICE_VENDOR_ID:
2045 if (adap->log_addrs.vendor_id == CEC_VENDOR_ID_NONE)
2046 return cec_feature_abort(adap, msg);
2047 cec_msg_device_vendor_id(&tx_cec_msg, adap->log_addrs.vendor_id);
2048 return cec_transmit_msg(adap, &tx_cec_msg, false);
2049
2050 case CEC_MSG_ABORT:
2051
2052 if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH)
2053 return 0;
2054 return cec_feature_refused(adap, msg);
2055
2056 case CEC_MSG_GIVE_OSD_NAME: {
2057 if (adap->log_addrs.osd_name[0] == 0)
2058 return cec_feature_abort(adap, msg);
2059 cec_msg_set_osd_name(&tx_cec_msg, adap->log_addrs.osd_name);
2060 return cec_transmit_msg(adap, &tx_cec_msg, false);
2061 }
2062
2063 case CEC_MSG_GIVE_FEATURES:
2064 if (adap->log_addrs.cec_version < CEC_OP_CEC_VERSION_2_0)
2065 return cec_feature_abort(adap, msg);
2066 cec_fill_msg_report_features(adap, &tx_cec_msg, la_idx);
2067 return cec_transmit_msg(adap, &tx_cec_msg, false);
2068
2069 default:
2070
2071
2072
2073
2074 if (!is_broadcast && !is_reply && !adap->follower_cnt &&
2075 !adap->cec_follower && msg->msg[1] != CEC_MSG_FEATURE_ABORT)
2076 return cec_feature_abort(adap, msg);
2077 break;
2078 }
2079
2080 skip_processing:
2081
2082 if (is_reply && !(msg->flags & CEC_MSG_FL_REPLY_TO_FOLLOWERS))
2083 return 0;
2084
2085
2086
2087
2088
2089 if (adap->cec_follower)
2090 cec_queue_msg_fh(adap->cec_follower, msg);
2091 else
2092 cec_queue_msg_followers(adap, msg);
2093 return 0;
2094 }
2095
2096
2097
2098
2099
2100
2101 int cec_monitor_all_cnt_inc(struct cec_adapter *adap)
2102 {
2103 int ret = 0;
2104
2105 if (adap->monitor_all_cnt == 0)
2106 ret = call_op(adap, adap_monitor_all_enable, 1);
2107 if (ret == 0)
2108 adap->monitor_all_cnt++;
2109 return ret;
2110 }
2111
2112 void cec_monitor_all_cnt_dec(struct cec_adapter *adap)
2113 {
2114 adap->monitor_all_cnt--;
2115 if (adap->monitor_all_cnt == 0)
2116 WARN_ON(call_op(adap, adap_monitor_all_enable, 0));
2117 }
2118
2119
2120
2121
2122
2123
2124 int cec_monitor_pin_cnt_inc(struct cec_adapter *adap)
2125 {
2126 int ret = 0;
2127
2128 if (adap->monitor_pin_cnt == 0)
2129 ret = call_op(adap, adap_monitor_pin_enable, 1);
2130 if (ret == 0)
2131 adap->monitor_pin_cnt++;
2132 return ret;
2133 }
2134
2135 void cec_monitor_pin_cnt_dec(struct cec_adapter *adap)
2136 {
2137 adap->monitor_pin_cnt--;
2138 if (adap->monitor_pin_cnt == 0)
2139 WARN_ON(call_op(adap, adap_monitor_pin_enable, 0));
2140 }
2141
2142 #ifdef CONFIG_DEBUG_FS
2143
2144
2145
2146
2147 int cec_adap_status(struct seq_file *file, void *priv)
2148 {
2149 struct cec_adapter *adap = dev_get_drvdata(file->private);
2150 struct cec_data *data;
2151
2152 mutex_lock(&adap->lock);
2153 seq_printf(file, "configured: %d\n", adap->is_configured);
2154 seq_printf(file, "configuring: %d\n", adap->is_configuring);
2155 seq_printf(file, "phys_addr: %x.%x.%x.%x\n",
2156 cec_phys_addr_exp(adap->phys_addr));
2157 seq_printf(file, "number of LAs: %d\n", adap->log_addrs.num_log_addrs);
2158 seq_printf(file, "LA mask: 0x%04x\n", adap->log_addrs.log_addr_mask);
2159 if (adap->cec_follower)
2160 seq_printf(file, "has CEC follower%s\n",
2161 adap->passthrough ? " (in passthrough mode)" : "");
2162 if (adap->cec_initiator)
2163 seq_puts(file, "has CEC initiator\n");
2164 if (adap->monitor_all_cnt)
2165 seq_printf(file, "file handles in Monitor All mode: %u\n",
2166 adap->monitor_all_cnt);
2167 if (adap->tx_timeouts) {
2168 seq_printf(file, "transmit timeouts: %u\n",
2169 adap->tx_timeouts);
2170 adap->tx_timeouts = 0;
2171 }
2172 data = adap->transmitting;
2173 if (data)
2174 seq_printf(file, "transmitting message: %*ph (reply: %02x, timeout: %ums)\n",
2175 data->msg.len, data->msg.msg, data->msg.reply,
2176 data->msg.timeout);
2177 seq_printf(file, "pending transmits: %u\n", adap->transmit_queue_sz);
2178 list_for_each_entry(data, &adap->transmit_queue, list) {
2179 seq_printf(file, "queued tx message: %*ph (reply: %02x, timeout: %ums)\n",
2180 data->msg.len, data->msg.msg, data->msg.reply,
2181 data->msg.timeout);
2182 }
2183 list_for_each_entry(data, &adap->wait_queue, list) {
2184 seq_printf(file, "message waiting for reply: %*ph (reply: %02x, timeout: %ums)\n",
2185 data->msg.len, data->msg.msg, data->msg.reply,
2186 data->msg.timeout);
2187 }
2188
2189 call_void_op(adap, adap_status, file);
2190 mutex_unlock(&adap->lock);
2191 return 0;
2192 }
2193 #endif