2 * cec-adap.c - HDMI Consumer Electronics Control framework - CEC adapter
4 * Copyright 2016 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
6 * This program is free software; you may redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
11 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
12 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
13 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
14 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
15 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
16 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 #include <linux/errno.h>
21 #include <linux/init.h>
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/kmod.h>
25 #include <linux/ktime.h>
26 #include <linux/slab.h>
28 #include <linux/string.h>
29 #include <linux/types.h>
31 #include <drm/drm_edid.h>
35 static void cec_fill_msg_report_features(struct cec_adapter
*adap
,
40 * 400 ms is the time it takes for one 16 byte message to be
41 * transferred and 5 is the maximum number of retries. Add
42 * another 100 ms as a margin. So if the transmit doesn't
43 * finish before that time something is really wrong and we
46 * This is a sign that something it really wrong and a warning
49 #define CEC_XFER_TIMEOUT_MS (5 * 400 + 100)
51 #define call_op(adap, op, arg...) \
52 (adap->ops->op ? adap->ops->op(adap, ## arg) : 0)
54 #define call_void_op(adap, op, arg...) \
57 adap->ops->op(adap, ## arg); \
60 static int cec_log_addr2idx(const struct cec_adapter
*adap
, u8 log_addr
)
64 for (i
= 0; i
< adap
->log_addrs
.num_log_addrs
; i
++)
65 if (adap
->log_addrs
.log_addr
[i
] == log_addr
)
70 static unsigned int cec_log_addr2dev(const struct cec_adapter
*adap
, u8 log_addr
)
72 int i
= cec_log_addr2idx(adap
, log_addr
);
74 return adap
->log_addrs
.primary_device_type
[i
< 0 ? 0 : i
];
78 * Queue a new event for this filehandle. If ts == 0, then set it
79 * to the current time.
81 * The two events that are currently defined do not need to keep track
82 * of intermediate events, so no actual queue of events is needed,
83 * instead just store the latest state and the total number of lost
86 * Should new events be added in the future that require intermediate
87 * results to be queued as well, then a proper queue data structure is
88 * required. But until then, just keep it simple.
90 void cec_queue_event_fh(struct cec_fh
*fh
,
91 const struct cec_event
*new_ev
, u64 ts
)
93 struct cec_event
*ev
= &fh
->events
[new_ev
->event
- 1];
98 mutex_lock(&fh
->lock
);
99 if (new_ev
->event
== CEC_EVENT_LOST_MSGS
&&
100 fh
->pending_events
& (1 << new_ev
->event
)) {
102 * If there is already a lost_msgs event, then just
103 * update the lost_msgs count. This effectively
104 * merges the old and new events into one.
106 ev
->lost_msgs
.lost_msgs
+= new_ev
->lost_msgs
.lost_msgs
;
111 * Intermediate states are not interesting, so just
112 * overwrite any older event.
116 fh
->pending_events
|= 1 << new_ev
->event
;
119 mutex_unlock(&fh
->lock
);
120 wake_up_interruptible(&fh
->wait
);
123 /* Queue a new event for all open filehandles. */
124 static void cec_queue_event(struct cec_adapter
*adap
,
125 const struct cec_event
*ev
)
127 u64 ts
= ktime_get_ns();
130 mutex_lock(&adap
->devnode
.lock
);
131 list_for_each_entry(fh
, &adap
->devnode
.fhs
, list
)
132 cec_queue_event_fh(fh
, ev
, ts
);
133 mutex_unlock(&adap
->devnode
.lock
);
137 * Queue a new message for this filehandle. If there is no more room
138 * in the queue, then send the LOST_MSGS event instead.
140 static void cec_queue_msg_fh(struct cec_fh
*fh
, const struct cec_msg
*msg
)
142 static const struct cec_event ev_lost_msg
= {
144 .event
= CEC_EVENT_LOST_MSGS
,
147 .lost_msgs
.lost_msgs
= 1,
150 struct cec_msg_entry
*entry
;
152 mutex_lock(&fh
->lock
);
153 entry
= kmalloc(sizeof(*entry
), GFP_KERNEL
);
158 /* Add new msg at the end of the queue */
159 list_add_tail(&entry
->list
, &fh
->msgs
);
162 * if the queue now has more than CEC_MAX_MSG_RX_QUEUE_SZ
163 * messages, drop the oldest one and send a lost message event.
165 if (fh
->queued_msgs
== CEC_MAX_MSG_RX_QUEUE_SZ
) {
166 list_del(&entry
->list
);
170 mutex_unlock(&fh
->lock
);
171 wake_up_interruptible(&fh
->wait
);
175 mutex_unlock(&fh
->lock
);
176 cec_queue_event_fh(fh
, &ev_lost_msg
, 0);
180 * Queue the message for those filehandles that are in monitor mode.
181 * If valid_la is true (this message is for us or was sent by us),
182 * then pass it on to any monitoring filehandle. If this message
183 * isn't for us or from us, then only give it to filehandles that
184 * are in MONITOR_ALL mode.
186 * This can only happen if the CEC_CAP_MONITOR_ALL capability is
187 * set and the CEC adapter was placed in 'monitor all' mode.
189 static void cec_queue_msg_monitor(struct cec_adapter
*adap
,
190 const struct cec_msg
*msg
,
194 u32 monitor_mode
= valid_la
? CEC_MODE_MONITOR
:
195 CEC_MODE_MONITOR_ALL
;
197 mutex_lock(&adap
->devnode
.lock
);
198 list_for_each_entry(fh
, &adap
->devnode
.fhs
, list
) {
199 if (fh
->mode_follower
>= monitor_mode
)
200 cec_queue_msg_fh(fh
, msg
);
202 mutex_unlock(&adap
->devnode
.lock
);
206 * Queue the message for follower filehandles.
208 static void cec_queue_msg_followers(struct cec_adapter
*adap
,
209 const struct cec_msg
*msg
)
213 mutex_lock(&adap
->devnode
.lock
);
214 list_for_each_entry(fh
, &adap
->devnode
.fhs
, list
) {
215 if (fh
->mode_follower
== CEC_MODE_FOLLOWER
)
216 cec_queue_msg_fh(fh
, msg
);
218 mutex_unlock(&adap
->devnode
.lock
);
221 /* Notify userspace of an adapter state change. */
222 static void cec_post_state_event(struct cec_adapter
*adap
)
224 struct cec_event ev
= {
225 .event
= CEC_EVENT_STATE_CHANGE
,
228 ev
.state_change
.phys_addr
= adap
->phys_addr
;
229 ev
.state_change
.log_addr_mask
= adap
->log_addrs
.log_addr_mask
;
230 cec_queue_event(adap
, &ev
);
234 * A CEC transmit (and a possible wait for reply) completed.
235 * If this was in blocking mode, then complete it, otherwise
236 * queue the message for userspace to dequeue later.
238 * This function is called with adap->lock held.
240 static void cec_data_completed(struct cec_data
*data
)
243 * Delete this transmit from the filehandle's xfer_list since
244 * we're done with it.
246 * Note that if the filehandle is closed before this transmit
247 * finished, then the release() function will set data->fh to NULL.
248 * Without that we would be referring to a closed filehandle.
251 list_del(&data
->xfer_list
);
253 if (data
->blocking
) {
255 * Someone is blocking so mark the message as completed
258 data
->completed
= true;
262 * No blocking, so just queue the message if needed and
266 cec_queue_msg_fh(data
->fh
, &data
->msg
);
272 * A pending CEC transmit needs to be cancelled, either because the CEC
273 * adapter is disabled or the transmit takes an impossibly long time to
276 * This function is called with adap->lock held.
278 static void cec_data_cancel(struct cec_data
*data
)
281 * It's either the current transmit, or it is a pending
282 * transmit. Take the appropriate action to clear it.
284 if (data
->adap
->transmitting
== data
) {
285 data
->adap
->transmitting
= NULL
;
287 list_del_init(&data
->list
);
288 if (!(data
->msg
.tx_status
& CEC_TX_STATUS_OK
))
289 data
->adap
->transmit_queue_sz
--;
292 /* Mark it as an error */
293 data
->msg
.tx_ts
= ktime_get_ns();
294 data
->msg
.tx_status
|= CEC_TX_STATUS_ERROR
|
295 CEC_TX_STATUS_MAX_RETRIES
;
296 data
->msg
.tx_error_cnt
++;
298 /* Queue transmitted message for monitoring purposes */
299 cec_queue_msg_monitor(data
->adap
, &data
->msg
, 1);
301 cec_data_completed(data
);
305 * Flush all pending transmits and cancel any pending timeout work.
307 * This function is called with adap->lock held.
309 static void cec_flush(struct cec_adapter
*adap
)
311 struct cec_data
*data
, *n
;
314 * If the adapter is disabled, or we're asked to stop,
315 * then cancel any pending transmits.
317 while (!list_empty(&adap
->transmit_queue
)) {
318 data
= list_first_entry(&adap
->transmit_queue
,
319 struct cec_data
, list
);
320 cec_data_cancel(data
);
322 if (adap
->transmitting
)
323 cec_data_cancel(adap
->transmitting
);
325 /* Cancel the pending timeout work. */
326 list_for_each_entry_safe(data
, n
, &adap
->wait_queue
, list
) {
327 if (cancel_delayed_work(&data
->work
))
328 cec_data_cancel(data
);
330 * If cancel_delayed_work returned false, then
331 * the cec_wait_timeout function is running,
332 * which will call cec_data_completed. So no
333 * need to do anything special in that case.
339 * Main CEC state machine
341 * Wait until the thread should be stopped, or we are not transmitting and
342 * a new transmit message is queued up, in which case we start transmitting
343 * that message. When the adapter finished transmitting the message it will
344 * call cec_transmit_done().
346 * If the adapter is disabled, then remove all queued messages instead.
348 * If the current transmit times out, then cancel that transmit.
350 int cec_thread_func(void *_adap
)
352 struct cec_adapter
*adap
= _adap
;
355 unsigned int signal_free_time
;
356 struct cec_data
*data
;
357 bool timeout
= false;
360 if (adap
->transmitting
) {
364 * We are transmitting a message, so add a timeout
365 * to prevent the state machine to get stuck waiting
366 * for this message to finalize and add a check to
367 * see if the adapter is disabled in which case the
368 * transmit should be canceled.
370 err
= wait_event_interruptible_timeout(adap
->kthread_waitq
,
372 (!adap
->is_configured
&& !adap
->is_configuring
)) ||
373 kthread_should_stop() ||
374 (!adap
->transmitting
&&
375 !list_empty(&adap
->transmit_queue
)),
376 msecs_to_jiffies(CEC_XFER_TIMEOUT_MS
));
379 /* Otherwise we just wait for something to happen. */
380 wait_event_interruptible(adap
->kthread_waitq
,
381 kthread_should_stop() ||
382 (!adap
->transmitting
&&
383 !list_empty(&adap
->transmit_queue
)));
386 mutex_lock(&adap
->lock
);
388 if ((adap
->needs_hpd
&&
389 (!adap
->is_configured
&& !adap
->is_configuring
)) ||
390 kthread_should_stop()) {
395 if (adap
->transmitting
&& timeout
) {
397 * If we timeout, then log that. This really shouldn't
398 * happen and is an indication of a faulty CEC adapter
399 * driver, or the CEC bus is in some weird state.
401 dprintk(0, "%s: message %*ph timed out!\n", __func__
,
402 adap
->transmitting
->msg
.len
,
403 adap
->transmitting
->msg
.msg
);
404 /* Just give up on this. */
405 cec_data_cancel(adap
->transmitting
);
410 * If we are still transmitting, or there is nothing new to
411 * transmit, then just continue waiting.
413 if (adap
->transmitting
|| list_empty(&adap
->transmit_queue
))
416 /* Get a new message to transmit */
417 data
= list_first_entry(&adap
->transmit_queue
,
418 struct cec_data
, list
);
419 list_del_init(&data
->list
);
420 adap
->transmit_queue_sz
--;
422 /* Make this the current transmitting message */
423 adap
->transmitting
= data
;
426 * Suggested number of attempts as per the CEC 2.0 spec:
427 * 4 attempts is the default, except for 'secondary poll
428 * messages', i.e. poll messages not sent during the adapter
429 * configuration phase when it allocates logical addresses.
431 if (data
->msg
.len
== 1 && adap
->is_configured
)
436 /* Set the suggested signal free time */
437 if (data
->attempts
) {
438 /* should be >= 3 data bit periods for a retry */
439 signal_free_time
= CEC_SIGNAL_FREE_TIME_RETRY
;
440 } else if (data
->new_initiator
) {
441 /* should be >= 5 data bit periods for new initiator */
442 signal_free_time
= CEC_SIGNAL_FREE_TIME_NEW_INITIATOR
;
445 * should be >= 7 data bit periods for sending another
446 * frame immediately after another.
448 signal_free_time
= CEC_SIGNAL_FREE_TIME_NEXT_XFER
;
450 if (data
->attempts
== 0)
451 data
->attempts
= attempts
;
453 /* Tell the adapter to transmit, cancel on error */
454 if (adap
->ops
->adap_transmit(adap
, data
->attempts
,
455 signal_free_time
, &data
->msg
))
456 cec_data_cancel(data
);
459 mutex_unlock(&adap
->lock
);
461 if (kthread_should_stop())
468 * Called by the CEC adapter if a transmit finished.
470 void cec_transmit_done(struct cec_adapter
*adap
, u8 status
, u8 arb_lost_cnt
,
471 u8 nack_cnt
, u8 low_drive_cnt
, u8 error_cnt
)
473 struct cec_data
*data
;
475 u64 ts
= ktime_get_ns();
477 dprintk(2, "%s: status %02x\n", __func__
, status
);
478 mutex_lock(&adap
->lock
);
479 data
= adap
->transmitting
;
482 * This can happen if a transmit was issued and the cable is
483 * unplugged while the transmit is ongoing. Ignore this
484 * transmit in that case.
486 dprintk(1, "%s was called without an ongoing transmit!\n",
493 /* Drivers must fill in the status! */
494 WARN_ON(status
== 0);
496 msg
->tx_status
|= status
;
497 msg
->tx_arb_lost_cnt
+= arb_lost_cnt
;
498 msg
->tx_nack_cnt
+= nack_cnt
;
499 msg
->tx_low_drive_cnt
+= low_drive_cnt
;
500 msg
->tx_error_cnt
+= error_cnt
;
502 /* Mark that we're done with this transmit */
503 adap
->transmitting
= NULL
;
506 * If there are still retry attempts left and there was an error and
507 * the hardware didn't signal that it retried itself (by setting
508 * CEC_TX_STATUS_MAX_RETRIES), then we will retry ourselves.
510 if (data
->attempts
> 1 &&
511 !(status
& (CEC_TX_STATUS_MAX_RETRIES
| CEC_TX_STATUS_OK
))) {
512 /* Retry this message */
515 dprintk(2, "retransmit: %*ph (attempts: %d, wait for 0x%02x)\n",
516 msg
->len
, msg
->msg
, data
->attempts
, msg
->reply
);
518 dprintk(2, "retransmit: %*ph (attempts: %d)\n",
519 msg
->len
, msg
->msg
, data
->attempts
);
520 /* Add the message in front of the transmit queue */
521 list_add(&data
->list
, &adap
->transmit_queue
);
522 adap
->transmit_queue_sz
++;
528 /* Always set CEC_TX_STATUS_MAX_RETRIES on error */
529 if (!(status
& CEC_TX_STATUS_OK
))
530 msg
->tx_status
|= CEC_TX_STATUS_MAX_RETRIES
;
532 /* Queue transmitted message for monitoring purposes */
533 cec_queue_msg_monitor(adap
, msg
, 1);
535 if ((status
& CEC_TX_STATUS_OK
) && adap
->is_configured
&&
538 * Queue the message into the wait queue if we want to wait
541 list_add_tail(&data
->list
, &adap
->wait_queue
);
542 schedule_delayed_work(&data
->work
,
543 msecs_to_jiffies(msg
->timeout
));
545 /* Otherwise we're done */
546 cec_data_completed(data
);
551 * Wake up the main thread to see if another message is ready
552 * for transmitting or to retry the current message.
554 wake_up_interruptible(&adap
->kthread_waitq
);
556 mutex_unlock(&adap
->lock
);
558 EXPORT_SYMBOL_GPL(cec_transmit_done
);
560 void cec_transmit_attempt_done(struct cec_adapter
*adap
, u8 status
)
562 switch (status
& ~CEC_TX_STATUS_MAX_RETRIES
) {
563 case CEC_TX_STATUS_OK
:
564 cec_transmit_done(adap
, status
, 0, 0, 0, 0);
566 case CEC_TX_STATUS_ARB_LOST
:
567 cec_transmit_done(adap
, status
, 1, 0, 0, 0);
569 case CEC_TX_STATUS_NACK
:
570 cec_transmit_done(adap
, status
, 0, 1, 0, 0);
572 case CEC_TX_STATUS_LOW_DRIVE
:
573 cec_transmit_done(adap
, status
, 0, 0, 1, 0);
575 case CEC_TX_STATUS_ERROR
:
576 cec_transmit_done(adap
, status
, 0, 0, 0, 1);
579 /* Should never happen */
580 WARN(1, "cec-%s: invalid status 0x%02x\n", adap
->name
, status
);
584 EXPORT_SYMBOL_GPL(cec_transmit_attempt_done
);
587 * Called when waiting for a reply times out.
589 static void cec_wait_timeout(struct work_struct
*work
)
591 struct cec_data
*data
= container_of(work
, struct cec_data
, work
.work
);
592 struct cec_adapter
*adap
= data
->adap
;
594 mutex_lock(&adap
->lock
);
596 * Sanity check in case the timeout and the arrival of the message
597 * happened at the same time.
599 if (list_empty(&data
->list
))
602 /* Mark the message as timed out */
603 list_del_init(&data
->list
);
604 data
->msg
.rx_ts
= ktime_get_ns();
605 data
->msg
.rx_status
= CEC_RX_STATUS_TIMEOUT
;
606 cec_data_completed(data
);
608 mutex_unlock(&adap
->lock
);
612 * Transmit a message. The fh argument may be NULL if the transmit is not
613 * associated with a specific filehandle.
615 * This function is called with adap->lock held.
617 int cec_transmit_msg_fh(struct cec_adapter
*adap
, struct cec_msg
*msg
,
618 struct cec_fh
*fh
, bool block
)
620 struct cec_data
*data
;
621 u8 last_initiator
= 0xff;
622 unsigned int timeout
;
629 msg
->tx_arb_lost_cnt
= 0;
630 msg
->tx_nack_cnt
= 0;
631 msg
->tx_low_drive_cnt
= 0;
632 msg
->tx_error_cnt
= 0;
633 msg
->sequence
= ++adap
->sequence
;
635 msg
->sequence
= ++adap
->sequence
;
637 if (msg
->reply
&& msg
->timeout
== 0) {
638 /* Make sure the timeout isn't 0. */
642 msg
->flags
&= CEC_MSG_FL_REPLY_TO_FOLLOWERS
;
647 if (msg
->len
== 0 || msg
->len
> CEC_MAX_MSG_SIZE
) {
648 dprintk(1, "%s: invalid length %d\n", __func__
, msg
->len
);
651 if (msg
->timeout
&& msg
->len
== 1) {
652 dprintk(1, "%s: can't reply for poll msg\n", __func__
);
655 memset(msg
->msg
+ msg
->len
, 0, sizeof(msg
->msg
) - msg
->len
);
657 if (cec_msg_destination(msg
) == 0xf) {
658 dprintk(1, "%s: invalid poll message\n", __func__
);
661 if (cec_has_log_addr(adap
, cec_msg_destination(msg
))) {
663 * If the destination is a logical address our adapter
664 * has already claimed, then just NACK this.
665 * It depends on the hardware what it will do with a
666 * POLL to itself (some OK this), so it is just as
667 * easy to handle it here so the behavior will be
670 msg
->tx_ts
= ktime_get_ns();
671 msg
->tx_status
= CEC_TX_STATUS_NACK
|
672 CEC_TX_STATUS_MAX_RETRIES
;
673 msg
->tx_nack_cnt
= 1;
677 if (msg
->len
> 1 && !cec_msg_is_broadcast(msg
) &&
678 cec_has_log_addr(adap
, cec_msg_destination(msg
))) {
679 dprintk(1, "%s: destination is the adapter itself\n", __func__
);
682 if (msg
->len
> 1 && adap
->is_configured
&&
683 !cec_has_log_addr(adap
, cec_msg_initiator(msg
))) {
684 dprintk(1, "%s: initiator has unknown logical address %d\n",
685 __func__
, cec_msg_initiator(msg
));
688 if (!adap
->is_configured
&& !adap
->is_configuring
) {
689 if (adap
->needs_hpd
|| msg
->msg
[0] != 0xf0) {
690 dprintk(1, "%s: adapter is unconfigured\n", __func__
);
694 dprintk(1, "%s: invalid msg->reply\n", __func__
);
699 if (adap
->transmit_queue_sz
>= CEC_MAX_MSG_TX_QUEUE_SZ
) {
700 dprintk(1, "%s: transmit queue full\n", __func__
);
704 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
708 if (msg
->len
> 1 && msg
->msg
[1] == CEC_MSG_CDC_MESSAGE
) {
709 msg
->msg
[2] = adap
->phys_addr
>> 8;
710 msg
->msg
[3] = adap
->phys_addr
& 0xff;
714 dprintk(2, "%s: %*ph (wait for 0x%02x%s)\n",
715 __func__
, msg
->len
, msg
->msg
, msg
->reply
, !block
? ", nb" : "");
717 dprintk(2, "%s: %*ph%s\n",
718 __func__
, msg
->len
, msg
->msg
, !block
? " (nb)" : "");
723 data
->blocking
= block
;
726 * Determine if this message follows a message from the same
727 * initiator. Needed to determine the free signal time later on.
730 if (!(list_empty(&adap
->transmit_queue
))) {
731 const struct cec_data
*last
;
733 last
= list_last_entry(&adap
->transmit_queue
,
734 const struct cec_data
, list
);
735 last_initiator
= cec_msg_initiator(&last
->msg
);
736 } else if (adap
->transmitting
) {
738 cec_msg_initiator(&adap
->transmitting
->msg
);
741 data
->new_initiator
= last_initiator
!= cec_msg_initiator(msg
);
742 init_completion(&data
->c
);
743 INIT_DELAYED_WORK(&data
->work
, cec_wait_timeout
);
746 list_add_tail(&data
->xfer_list
, &fh
->xfer_list
);
748 list_add_tail(&data
->list
, &adap
->transmit_queue
);
749 adap
->transmit_queue_sz
++;
750 if (!adap
->transmitting
)
751 wake_up_interruptible(&adap
->kthread_waitq
);
753 /* All done if we don't need to block waiting for completion */
758 * If we don't get a completion before this time something is really
759 * wrong and we time out.
761 timeout
= CEC_XFER_TIMEOUT_MS
;
762 /* Add the requested timeout if we have to wait for a reply as well */
764 timeout
+= msg
->timeout
;
767 * Release the lock and wait, retake the lock afterwards.
769 mutex_unlock(&adap
->lock
);
770 res
= wait_for_completion_killable_timeout(&data
->c
,
771 msecs_to_jiffies(timeout
));
772 mutex_lock(&adap
->lock
);
774 if (data
->completed
) {
775 /* The transmit completed (possibly with an error) */
781 * The wait for completion timed out or was interrupted, so mark this
782 * as non-blocking and disconnect from the filehandle since it is
783 * still 'in flight'. When it finally completes it will just drop the
786 data
->blocking
= false;
788 list_del(&data
->xfer_list
);
791 if (res
== 0) { /* timed out */
792 /* Check if the reply or the transmit failed */
793 if (msg
->timeout
&& (msg
->tx_status
& CEC_TX_STATUS_OK
))
794 msg
->rx_status
= CEC_RX_STATUS_TIMEOUT
;
796 msg
->tx_status
= CEC_TX_STATUS_MAX_RETRIES
;
798 return res
> 0 ? 0 : res
;
801 /* Helper function to be used by drivers and this framework. */
802 int cec_transmit_msg(struct cec_adapter
*adap
, struct cec_msg
*msg
,
807 mutex_lock(&adap
->lock
);
808 ret
= cec_transmit_msg_fh(adap
, msg
, NULL
, block
);
809 mutex_unlock(&adap
->lock
);
812 EXPORT_SYMBOL_GPL(cec_transmit_msg
);
815 * I don't like forward references but without this the low-level
816 * cec_received_msg() function would come after a bunch of high-level
817 * CEC protocol handling functions. That was very confusing.
819 static int cec_receive_notify(struct cec_adapter
*adap
, struct cec_msg
*msg
,
822 #define DIRECTED 0x80
823 #define BCAST1_4 0x40
824 #define BCAST2_0 0x20 /* broadcast only allowed for >= 2.0 */
825 #define BCAST (BCAST1_4 | BCAST2_0)
826 #define BOTH (BCAST | DIRECTED)
829 * Specify minimum length and whether the message is directed, broadcast
830 * or both. Messages that do not match the criteria are ignored as per
831 * the CEC specification.
833 static const u8 cec_msg_size
[256] = {
834 [CEC_MSG_ACTIVE_SOURCE
] = 4 | BCAST
,
835 [CEC_MSG_IMAGE_VIEW_ON
] = 2 | DIRECTED
,
836 [CEC_MSG_TEXT_VIEW_ON
] = 2 | DIRECTED
,
837 [CEC_MSG_INACTIVE_SOURCE
] = 4 | DIRECTED
,
838 [CEC_MSG_REQUEST_ACTIVE_SOURCE
] = 2 | BCAST
,
839 [CEC_MSG_ROUTING_CHANGE
] = 6 | BCAST
,
840 [CEC_MSG_ROUTING_INFORMATION
] = 4 | BCAST
,
841 [CEC_MSG_SET_STREAM_PATH
] = 4 | BCAST
,
842 [CEC_MSG_STANDBY
] = 2 | BOTH
,
843 [CEC_MSG_RECORD_OFF
] = 2 | DIRECTED
,
844 [CEC_MSG_RECORD_ON
] = 3 | DIRECTED
,
845 [CEC_MSG_RECORD_STATUS
] = 3 | DIRECTED
,
846 [CEC_MSG_RECORD_TV_SCREEN
] = 2 | DIRECTED
,
847 [CEC_MSG_CLEAR_ANALOGUE_TIMER
] = 13 | DIRECTED
,
848 [CEC_MSG_CLEAR_DIGITAL_TIMER
] = 16 | DIRECTED
,
849 [CEC_MSG_CLEAR_EXT_TIMER
] = 13 | DIRECTED
,
850 [CEC_MSG_SET_ANALOGUE_TIMER
] = 13 | DIRECTED
,
851 [CEC_MSG_SET_DIGITAL_TIMER
] = 16 | DIRECTED
,
852 [CEC_MSG_SET_EXT_TIMER
] = 13 | DIRECTED
,
853 [CEC_MSG_SET_TIMER_PROGRAM_TITLE
] = 2 | DIRECTED
,
854 [CEC_MSG_TIMER_CLEARED_STATUS
] = 3 | DIRECTED
,
855 [CEC_MSG_TIMER_STATUS
] = 3 | DIRECTED
,
856 [CEC_MSG_CEC_VERSION
] = 3 | DIRECTED
,
857 [CEC_MSG_GET_CEC_VERSION
] = 2 | DIRECTED
,
858 [CEC_MSG_GIVE_PHYSICAL_ADDR
] = 2 | DIRECTED
,
859 [CEC_MSG_GET_MENU_LANGUAGE
] = 2 | DIRECTED
,
860 [CEC_MSG_REPORT_PHYSICAL_ADDR
] = 5 | BCAST
,
861 [CEC_MSG_SET_MENU_LANGUAGE
] = 5 | BCAST
,
862 [CEC_MSG_REPORT_FEATURES
] = 6 | BCAST
,
863 [CEC_MSG_GIVE_FEATURES
] = 2 | DIRECTED
,
864 [CEC_MSG_DECK_CONTROL
] = 3 | DIRECTED
,
865 [CEC_MSG_DECK_STATUS
] = 3 | DIRECTED
,
866 [CEC_MSG_GIVE_DECK_STATUS
] = 3 | DIRECTED
,
867 [CEC_MSG_PLAY
] = 3 | DIRECTED
,
868 [CEC_MSG_GIVE_TUNER_DEVICE_STATUS
] = 3 | DIRECTED
,
869 [CEC_MSG_SELECT_ANALOGUE_SERVICE
] = 6 | DIRECTED
,
870 [CEC_MSG_SELECT_DIGITAL_SERVICE
] = 9 | DIRECTED
,
871 [CEC_MSG_TUNER_DEVICE_STATUS
] = 7 | DIRECTED
,
872 [CEC_MSG_TUNER_STEP_DECREMENT
] = 2 | DIRECTED
,
873 [CEC_MSG_TUNER_STEP_INCREMENT
] = 2 | DIRECTED
,
874 [CEC_MSG_DEVICE_VENDOR_ID
] = 5 | BCAST
,
875 [CEC_MSG_GIVE_DEVICE_VENDOR_ID
] = 2 | DIRECTED
,
876 [CEC_MSG_VENDOR_COMMAND
] = 2 | DIRECTED
,
877 [CEC_MSG_VENDOR_COMMAND_WITH_ID
] = 5 | BOTH
,
878 [CEC_MSG_VENDOR_REMOTE_BUTTON_DOWN
] = 2 | BOTH
,
879 [CEC_MSG_VENDOR_REMOTE_BUTTON_UP
] = 2 | BOTH
,
880 [CEC_MSG_SET_OSD_STRING
] = 3 | DIRECTED
,
881 [CEC_MSG_GIVE_OSD_NAME
] = 2 | DIRECTED
,
882 [CEC_MSG_SET_OSD_NAME
] = 2 | DIRECTED
,
883 [CEC_MSG_MENU_REQUEST
] = 3 | DIRECTED
,
884 [CEC_MSG_MENU_STATUS
] = 3 | DIRECTED
,
885 [CEC_MSG_USER_CONTROL_PRESSED
] = 3 | DIRECTED
,
886 [CEC_MSG_USER_CONTROL_RELEASED
] = 2 | DIRECTED
,
887 [CEC_MSG_GIVE_DEVICE_POWER_STATUS
] = 2 | DIRECTED
,
888 [CEC_MSG_REPORT_POWER_STATUS
] = 3 | DIRECTED
| BCAST2_0
,
889 [CEC_MSG_FEATURE_ABORT
] = 4 | DIRECTED
,
890 [CEC_MSG_ABORT
] = 2 | DIRECTED
,
891 [CEC_MSG_GIVE_AUDIO_STATUS
] = 2 | DIRECTED
,
892 [CEC_MSG_GIVE_SYSTEM_AUDIO_MODE_STATUS
] = 2 | DIRECTED
,
893 [CEC_MSG_REPORT_AUDIO_STATUS
] = 3 | DIRECTED
,
894 [CEC_MSG_REPORT_SHORT_AUDIO_DESCRIPTOR
] = 2 | DIRECTED
,
895 [CEC_MSG_REQUEST_SHORT_AUDIO_DESCRIPTOR
] = 2 | DIRECTED
,
896 [CEC_MSG_SET_SYSTEM_AUDIO_MODE
] = 3 | BOTH
,
897 [CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST
] = 2 | DIRECTED
,
898 [CEC_MSG_SYSTEM_AUDIO_MODE_STATUS
] = 3 | DIRECTED
,
899 [CEC_MSG_SET_AUDIO_RATE
] = 3 | DIRECTED
,
900 [CEC_MSG_INITIATE_ARC
] = 2 | DIRECTED
,
901 [CEC_MSG_REPORT_ARC_INITIATED
] = 2 | DIRECTED
,
902 [CEC_MSG_REPORT_ARC_TERMINATED
] = 2 | DIRECTED
,
903 [CEC_MSG_REQUEST_ARC_INITIATION
] = 2 | DIRECTED
,
904 [CEC_MSG_REQUEST_ARC_TERMINATION
] = 2 | DIRECTED
,
905 [CEC_MSG_TERMINATE_ARC
] = 2 | DIRECTED
,
906 [CEC_MSG_REQUEST_CURRENT_LATENCY
] = 4 | BCAST
,
907 [CEC_MSG_REPORT_CURRENT_LATENCY
] = 6 | BCAST
,
908 [CEC_MSG_CDC_MESSAGE
] = 2 | BCAST
,
911 /* Called by the CEC adapter if a message is received */
912 void cec_received_msg(struct cec_adapter
*adap
, struct cec_msg
*msg
)
914 struct cec_data
*data
;
915 u8 msg_init
= cec_msg_initiator(msg
);
916 u8 msg_dest
= cec_msg_destination(msg
);
917 u8 cmd
= msg
->msg
[1];
918 bool is_reply
= false;
919 bool valid_la
= true;
922 if (WARN_ON(!msg
->len
|| msg
->len
> CEC_MAX_MSG_SIZE
))
926 * Some CEC adapters will receive the messages that they transmitted.
927 * This test filters out those messages by checking if we are the
928 * initiator, and just returning in that case.
930 * Note that this won't work if this is an Unregistered device.
932 * It is bad practice if the hardware receives the message that it
933 * transmitted and luckily most CEC adapters behave correctly in this
936 if (msg_init
!= CEC_LOG_ADDR_UNREGISTERED
&&
937 cec_has_log_addr(adap
, msg_init
))
940 msg
->rx_ts
= ktime_get_ns();
941 msg
->rx_status
= CEC_RX_STATUS_OK
;
942 msg
->sequence
= msg
->reply
= msg
->timeout
= 0;
945 msg
->tx_arb_lost_cnt
= 0;
946 msg
->tx_nack_cnt
= 0;
947 msg
->tx_low_drive_cnt
= 0;
948 msg
->tx_error_cnt
= 0;
950 memset(msg
->msg
+ msg
->len
, 0, sizeof(msg
->msg
) - msg
->len
);
952 mutex_lock(&adap
->lock
);
953 dprintk(2, "%s: %*ph\n", __func__
, msg
->len
, msg
->msg
);
955 /* Check if this message was for us (directed or broadcast). */
956 if (!cec_msg_is_broadcast(msg
))
957 valid_la
= cec_has_log_addr(adap
, msg_dest
);
960 * Check if the length is not too short or if the message is a
961 * broadcast message where a directed message was expected or
962 * vice versa. If so, then the message has to be ignored (according
963 * to section CEC 7.3 and CEC 12.2).
965 if (valid_la
&& msg
->len
> 1 && cec_msg_size
[cmd
]) {
966 u8 dir_fl
= cec_msg_size
[cmd
] & BOTH
;
968 min_len
= cec_msg_size
[cmd
] & 0x1f;
969 if (msg
->len
< min_len
)
971 else if (!cec_msg_is_broadcast(msg
) && !(dir_fl
& DIRECTED
))
973 else if (cec_msg_is_broadcast(msg
) && !(dir_fl
& BCAST1_4
))
975 else if (cec_msg_is_broadcast(msg
) &&
976 adap
->log_addrs
.cec_version
>= CEC_OP_CEC_VERSION_2_0
&&
977 !(dir_fl
& BCAST2_0
))
980 if (valid_la
&& min_len
) {
981 /* These messages have special length requirements */
983 case CEC_MSG_TIMER_STATUS
:
984 if (msg
->msg
[2] & 0x10) {
985 switch (msg
->msg
[2] & 0xf) {
986 case CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE
:
987 case CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE
:
992 } else if ((msg
->msg
[2] & 0xf) == CEC_OP_PROG_ERROR_DUPLICATE
) {
997 case CEC_MSG_RECORD_ON
:
998 switch (msg
->msg
[2]) {
999 case CEC_OP_RECORD_SRC_OWN
:
1001 case CEC_OP_RECORD_SRC_DIGITAL
:
1005 case CEC_OP_RECORD_SRC_ANALOG
:
1009 case CEC_OP_RECORD_SRC_EXT_PLUG
:
1013 case CEC_OP_RECORD_SRC_EXT_PHYS_ADDR
:
1022 /* It's a valid message and not a poll or CDC message */
1023 if (valid_la
&& msg
->len
> 1 && cmd
!= CEC_MSG_CDC_MESSAGE
) {
1024 bool abort
= cmd
== CEC_MSG_FEATURE_ABORT
;
1026 /* The aborted command is in msg[2] */
1031 * Walk over all transmitted messages that are waiting for a
1034 list_for_each_entry(data
, &adap
->wait_queue
, list
) {
1035 struct cec_msg
*dst
= &data
->msg
;
1038 * The *only* CEC message that has two possible replies
1039 * is CEC_MSG_INITIATE_ARC.
1040 * In this case allow either of the two replies.
1042 if (!abort
&& dst
->msg
[1] == CEC_MSG_INITIATE_ARC
&&
1043 (cmd
== CEC_MSG_REPORT_ARC_INITIATED
||
1044 cmd
== CEC_MSG_REPORT_ARC_TERMINATED
) &&
1045 (dst
->reply
== CEC_MSG_REPORT_ARC_INITIATED
||
1046 dst
->reply
== CEC_MSG_REPORT_ARC_TERMINATED
))
1049 /* Does the command match? */
1050 if ((abort
&& cmd
!= dst
->msg
[1]) ||
1051 (!abort
&& cmd
!= dst
->reply
))
1054 /* Does the addressing match? */
1055 if (msg_init
!= cec_msg_destination(dst
) &&
1056 !cec_msg_is_broadcast(dst
))
1059 /* We got a reply */
1060 memcpy(dst
->msg
, msg
->msg
, msg
->len
);
1061 dst
->len
= msg
->len
;
1062 dst
->rx_ts
= msg
->rx_ts
;
1063 dst
->rx_status
= msg
->rx_status
;
1065 dst
->rx_status
|= CEC_RX_STATUS_FEATURE_ABORT
;
1066 msg
->flags
= dst
->flags
;
1067 /* Remove it from the wait_queue */
1068 list_del_init(&data
->list
);
1070 /* Cancel the pending timeout work */
1071 if (!cancel_delayed_work(&data
->work
)) {
1072 mutex_unlock(&adap
->lock
);
1073 flush_scheduled_work();
1074 mutex_lock(&adap
->lock
);
1077 * Mark this as a reply, provided someone is still
1078 * waiting for the answer.
1082 cec_data_completed(data
);
1086 mutex_unlock(&adap
->lock
);
1088 /* Pass the message on to any monitoring filehandles */
1089 cec_queue_msg_monitor(adap
, msg
, valid_la
);
1091 /* We're done if it is not for us or a poll message */
1092 if (!valid_la
|| msg
->len
<= 1)
1095 if (adap
->log_addrs
.log_addr_mask
== 0)
1099 * Process the message on the protocol level. If is_reply is true,
1100 * then cec_receive_notify() won't pass on the reply to the listener(s)
1101 * since that was already done by cec_data_completed() above.
1103 cec_receive_notify(adap
, msg
, is_reply
);
1105 EXPORT_SYMBOL_GPL(cec_received_msg
);
1107 /* Logical Address Handling */
1110 * Attempt to claim a specific logical address.
1112 * This function is called with adap->lock held.
1114 static int cec_config_log_addr(struct cec_adapter
*adap
,
1116 unsigned int log_addr
)
1118 struct cec_log_addrs
*las
= &adap
->log_addrs
;
1119 struct cec_msg msg
= { };
1122 if (cec_has_log_addr(adap
, log_addr
))
1125 /* Send poll message */
1127 msg
.msg
[0] = (log_addr
<< 4) | log_addr
;
1128 err
= cec_transmit_msg_fh(adap
, &msg
, NULL
, true);
1131 * While trying to poll the physical address was reset
1132 * and the adapter was unconfigured, so bail out.
1134 if (!adap
->is_configuring
)
1140 if (msg
.tx_status
& CEC_TX_STATUS_OK
)
1144 * Message not acknowledged, so this logical
1145 * address is free to use.
1147 err
= adap
->ops
->adap_log_addr(adap
, log_addr
);
1151 las
->log_addr
[idx
] = log_addr
;
1152 las
->log_addr_mask
|= 1 << log_addr
;
1153 adap
->phys_addrs
[log_addr
] = adap
->phys_addr
;
1158 * Unconfigure the adapter: clear all logical addresses and send
1159 * the state changed event.
1161 * This function is called with adap->lock held.
1163 static void cec_adap_unconfigure(struct cec_adapter
*adap
)
1165 if (!adap
->needs_hpd
||
1166 adap
->phys_addr
!= CEC_PHYS_ADDR_INVALID
)
1167 WARN_ON(adap
->ops
->adap_log_addr(adap
, CEC_LOG_ADDR_INVALID
));
1168 adap
->log_addrs
.log_addr_mask
= 0;
1169 adap
->is_configuring
= false;
1170 adap
->is_configured
= false;
1171 memset(adap
->phys_addrs
, 0xff, sizeof(adap
->phys_addrs
));
1173 wake_up_interruptible(&adap
->kthread_waitq
);
1174 cec_post_state_event(adap
);
1178 * Attempt to claim the required logical addresses.
1180 static int cec_config_thread_func(void *arg
)
1182 /* The various LAs for each type of device */
1183 static const u8 tv_log_addrs
[] = {
1184 CEC_LOG_ADDR_TV
, CEC_LOG_ADDR_SPECIFIC
,
1185 CEC_LOG_ADDR_INVALID
1187 static const u8 record_log_addrs
[] = {
1188 CEC_LOG_ADDR_RECORD_1
, CEC_LOG_ADDR_RECORD_2
,
1189 CEC_LOG_ADDR_RECORD_3
,
1190 CEC_LOG_ADDR_BACKUP_1
, CEC_LOG_ADDR_BACKUP_2
,
1191 CEC_LOG_ADDR_INVALID
1193 static const u8 tuner_log_addrs
[] = {
1194 CEC_LOG_ADDR_TUNER_1
, CEC_LOG_ADDR_TUNER_2
,
1195 CEC_LOG_ADDR_TUNER_3
, CEC_LOG_ADDR_TUNER_4
,
1196 CEC_LOG_ADDR_BACKUP_1
, CEC_LOG_ADDR_BACKUP_2
,
1197 CEC_LOG_ADDR_INVALID
1199 static const u8 playback_log_addrs
[] = {
1200 CEC_LOG_ADDR_PLAYBACK_1
, CEC_LOG_ADDR_PLAYBACK_2
,
1201 CEC_LOG_ADDR_PLAYBACK_3
,
1202 CEC_LOG_ADDR_BACKUP_1
, CEC_LOG_ADDR_BACKUP_2
,
1203 CEC_LOG_ADDR_INVALID
1205 static const u8 audiosystem_log_addrs
[] = {
1206 CEC_LOG_ADDR_AUDIOSYSTEM
,
1207 CEC_LOG_ADDR_INVALID
1209 static const u8 specific_use_log_addrs
[] = {
1210 CEC_LOG_ADDR_SPECIFIC
,
1211 CEC_LOG_ADDR_BACKUP_1
, CEC_LOG_ADDR_BACKUP_2
,
1212 CEC_LOG_ADDR_INVALID
1214 static const u8
*type2addrs
[6] = {
1215 [CEC_LOG_ADDR_TYPE_TV
] = tv_log_addrs
,
1216 [CEC_LOG_ADDR_TYPE_RECORD
] = record_log_addrs
,
1217 [CEC_LOG_ADDR_TYPE_TUNER
] = tuner_log_addrs
,
1218 [CEC_LOG_ADDR_TYPE_PLAYBACK
] = playback_log_addrs
,
1219 [CEC_LOG_ADDR_TYPE_AUDIOSYSTEM
] = audiosystem_log_addrs
,
1220 [CEC_LOG_ADDR_TYPE_SPECIFIC
] = specific_use_log_addrs
,
1222 static const u16 type2mask
[] = {
1223 [CEC_LOG_ADDR_TYPE_TV
] = CEC_LOG_ADDR_MASK_TV
,
1224 [CEC_LOG_ADDR_TYPE_RECORD
] = CEC_LOG_ADDR_MASK_RECORD
,
1225 [CEC_LOG_ADDR_TYPE_TUNER
] = CEC_LOG_ADDR_MASK_TUNER
,
1226 [CEC_LOG_ADDR_TYPE_PLAYBACK
] = CEC_LOG_ADDR_MASK_PLAYBACK
,
1227 [CEC_LOG_ADDR_TYPE_AUDIOSYSTEM
] = CEC_LOG_ADDR_MASK_AUDIOSYSTEM
,
1228 [CEC_LOG_ADDR_TYPE_SPECIFIC
] = CEC_LOG_ADDR_MASK_SPECIFIC
,
1230 struct cec_adapter
*adap
= arg
;
1231 struct cec_log_addrs
*las
= &adap
->log_addrs
;
1235 mutex_lock(&adap
->lock
);
1236 dprintk(1, "physical address: %x.%x.%x.%x, claim %d logical addresses\n",
1237 cec_phys_addr_exp(adap
->phys_addr
), las
->num_log_addrs
);
1238 las
->log_addr_mask
= 0;
1240 if (las
->log_addr_type
[0] == CEC_LOG_ADDR_TYPE_UNREGISTERED
)
1243 for (i
= 0; i
< las
->num_log_addrs
; i
++) {
1244 unsigned int type
= las
->log_addr_type
[i
];
1249 * The TV functionality can only map to physical address 0.
1250 * For any other address, try the Specific functionality
1251 * instead as per the spec.
1253 if (adap
->phys_addr
&& type
== CEC_LOG_ADDR_TYPE_TV
)
1254 type
= CEC_LOG_ADDR_TYPE_SPECIFIC
;
1256 la_list
= type2addrs
[type
];
1257 last_la
= las
->log_addr
[i
];
1258 las
->log_addr
[i
] = CEC_LOG_ADDR_INVALID
;
1259 if (last_la
== CEC_LOG_ADDR_INVALID
||
1260 last_la
== CEC_LOG_ADDR_UNREGISTERED
||
1261 !((1 << last_la
) & type2mask
[type
]))
1262 last_la
= la_list
[0];
1264 err
= cec_config_log_addr(adap
, i
, last_la
);
1265 if (err
> 0) /* Reused last LA */
1271 for (j
= 0; la_list
[j
] != CEC_LOG_ADDR_INVALID
; j
++) {
1272 /* Tried this one already, skip it */
1273 if (la_list
[j
] == last_la
)
1275 /* The backup addresses are CEC 2.0 specific */
1276 if ((la_list
[j
] == CEC_LOG_ADDR_BACKUP_1
||
1277 la_list
[j
] == CEC_LOG_ADDR_BACKUP_2
) &&
1278 las
->cec_version
< CEC_OP_CEC_VERSION_2_0
)
1281 err
= cec_config_log_addr(adap
, i
, la_list
[j
]);
1282 if (err
== 0) /* LA is in use */
1286 /* Done, claimed an LA */
1290 if (la_list
[j
] == CEC_LOG_ADDR_INVALID
)
1291 dprintk(1, "could not claim LA %d\n", i
);
1294 if (adap
->log_addrs
.log_addr_mask
== 0 &&
1295 !(las
->flags
& CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK
))
1299 if (adap
->log_addrs
.log_addr_mask
== 0) {
1300 /* Fall back to unregistered */
1301 las
->log_addr
[0] = CEC_LOG_ADDR_UNREGISTERED
;
1302 las
->log_addr_mask
= 1 << las
->log_addr
[0];
1303 for (i
= 1; i
< las
->num_log_addrs
; i
++)
1304 las
->log_addr
[i
] = CEC_LOG_ADDR_INVALID
;
1306 for (i
= las
->num_log_addrs
; i
< CEC_MAX_LOG_ADDRS
; i
++)
1307 las
->log_addr
[i
] = CEC_LOG_ADDR_INVALID
;
1308 adap
->is_configured
= true;
1309 adap
->is_configuring
= false;
1310 cec_post_state_event(adap
);
1313 * Now post the Report Features and Report Physical Address broadcast
1314 * messages. Note that these are non-blocking transmits, meaning that
1315 * they are just queued up and once adap->lock is unlocked the main
1316 * thread will kick in and start transmitting these.
1318 * If after this function is done (but before one or more of these
1319 * messages are actually transmitted) the CEC adapter is unconfigured,
1320 * then any remaining messages will be dropped by the main thread.
1322 for (i
= 0; i
< las
->num_log_addrs
; i
++) {
1323 struct cec_msg msg
= {};
1325 if (las
->log_addr
[i
] == CEC_LOG_ADDR_INVALID
||
1326 (las
->flags
& CEC_LOG_ADDRS_FL_CDC_ONLY
))
1329 msg
.msg
[0] = (las
->log_addr
[i
] << 4) | 0x0f;
1331 /* Report Features must come first according to CEC 2.0 */
1332 if (las
->log_addr
[i
] != CEC_LOG_ADDR_UNREGISTERED
&&
1333 adap
->log_addrs
.cec_version
>= CEC_OP_CEC_VERSION_2_0
) {
1334 cec_fill_msg_report_features(adap
, &msg
, i
);
1335 cec_transmit_msg_fh(adap
, &msg
, NULL
, false);
1338 /* Report Physical Address */
1339 cec_msg_report_physical_addr(&msg
, adap
->phys_addr
,
1340 las
->primary_device_type
[i
]);
1341 dprintk(1, "config: la %d pa %x.%x.%x.%x\n",
1343 cec_phys_addr_exp(adap
->phys_addr
));
1344 cec_transmit_msg_fh(adap
, &msg
, NULL
, false);
1346 adap
->kthread_config
= NULL
;
1347 complete(&adap
->config_completion
);
1348 mutex_unlock(&adap
->lock
);
1352 for (i
= 0; i
< las
->num_log_addrs
; i
++)
1353 las
->log_addr
[i
] = CEC_LOG_ADDR_INVALID
;
1354 cec_adap_unconfigure(adap
);
1355 adap
->kthread_config
= NULL
;
1356 mutex_unlock(&adap
->lock
);
1357 complete(&adap
->config_completion
);
1362 * Called from either __cec_s_phys_addr or __cec_s_log_addrs to claim the
1363 * logical addresses.
1365 * This function is called with adap->lock held.
1367 static void cec_claim_log_addrs(struct cec_adapter
*adap
, bool block
)
1369 if (WARN_ON(adap
->is_configuring
|| adap
->is_configured
))
1372 init_completion(&adap
->config_completion
);
1374 /* Ready to kick off the thread */
1375 adap
->is_configuring
= true;
1376 adap
->kthread_config
= kthread_run(cec_config_thread_func
, adap
,
1377 "ceccfg-%s", adap
->name
);
1378 if (IS_ERR(adap
->kthread_config
)) {
1379 adap
->kthread_config
= NULL
;
1381 mutex_unlock(&adap
->lock
);
1382 wait_for_completion(&adap
->config_completion
);
1383 mutex_lock(&adap
->lock
);
1387 /* Set a new physical address and send an event notifying userspace of this.
1389 * This function is called with adap->lock held.
1391 void __cec_s_phys_addr(struct cec_adapter
*adap
, u16 phys_addr
, bool block
)
1393 if (phys_addr
== adap
->phys_addr
|| adap
->devnode
.unregistered
)
1396 dprintk(1, "new physical address %x.%x.%x.%x\n",
1397 cec_phys_addr_exp(phys_addr
));
1398 if (phys_addr
== CEC_PHYS_ADDR_INVALID
||
1399 adap
->phys_addr
!= CEC_PHYS_ADDR_INVALID
) {
1400 adap
->phys_addr
= CEC_PHYS_ADDR_INVALID
;
1401 cec_post_state_event(adap
);
1402 cec_adap_unconfigure(adap
);
1403 /* Disabling monitor all mode should always succeed */
1404 if (adap
->monitor_all_cnt
)
1405 WARN_ON(call_op(adap
, adap_monitor_all_enable
, false));
1406 mutex_lock(&adap
->devnode
.lock
);
1407 if (adap
->needs_hpd
|| list_empty(&adap
->devnode
.fhs
))
1408 WARN_ON(adap
->ops
->adap_enable(adap
, false));
1409 mutex_unlock(&adap
->devnode
.lock
);
1410 if (phys_addr
== CEC_PHYS_ADDR_INVALID
)
1414 mutex_lock(&adap
->devnode
.lock
);
1415 if ((adap
->needs_hpd
|| list_empty(&adap
->devnode
.fhs
)) &&
1416 adap
->ops
->adap_enable(adap
, true)) {
1417 mutex_unlock(&adap
->devnode
.lock
);
1421 if (adap
->monitor_all_cnt
&&
1422 call_op(adap
, adap_monitor_all_enable
, true)) {
1423 if (adap
->needs_hpd
|| list_empty(&adap
->devnode
.fhs
))
1424 WARN_ON(adap
->ops
->adap_enable(adap
, false));
1425 mutex_unlock(&adap
->devnode
.lock
);
1428 mutex_unlock(&adap
->devnode
.lock
);
1430 adap
->phys_addr
= phys_addr
;
1431 cec_post_state_event(adap
);
1432 if (adap
->log_addrs
.num_log_addrs
)
1433 cec_claim_log_addrs(adap
, block
);
1436 void cec_s_phys_addr(struct cec_adapter
*adap
, u16 phys_addr
, bool block
)
1438 if (IS_ERR_OR_NULL(adap
))
1441 mutex_lock(&adap
->lock
);
1442 __cec_s_phys_addr(adap
, phys_addr
, block
);
1443 mutex_unlock(&adap
->lock
);
1445 EXPORT_SYMBOL_GPL(cec_s_phys_addr
);
1447 void cec_s_phys_addr_from_edid(struct cec_adapter
*adap
,
1448 const struct edid
*edid
)
1450 u16 pa
= CEC_PHYS_ADDR_INVALID
;
1452 if (edid
&& edid
->extensions
)
1453 pa
= cec_get_edid_phys_addr((const u8
*)edid
,
1454 EDID_LENGTH
* (edid
->extensions
+ 1), NULL
);
1455 cec_s_phys_addr(adap
, pa
, false);
1457 EXPORT_SYMBOL_GPL(cec_s_phys_addr_from_edid
);
1460 * Called from either the ioctl or a driver to set the logical addresses.
1462 * This function is called with adap->lock held.
1464 int __cec_s_log_addrs(struct cec_adapter
*adap
,
1465 struct cec_log_addrs
*log_addrs
, bool block
)
1470 if (adap
->devnode
.unregistered
)
1473 if (!log_addrs
|| log_addrs
->num_log_addrs
== 0) {
1474 adap
->log_addrs
.num_log_addrs
= 0;
1475 cec_adap_unconfigure(adap
);
1479 if (log_addrs
->flags
& CEC_LOG_ADDRS_FL_CDC_ONLY
) {
1481 * Sanitize log_addrs fields if a CDC-Only device is
1484 log_addrs
->num_log_addrs
= 1;
1485 log_addrs
->osd_name
[0] = '\0';
1486 log_addrs
->vendor_id
= CEC_VENDOR_ID_NONE
;
1487 log_addrs
->log_addr_type
[0] = CEC_LOG_ADDR_TYPE_UNREGISTERED
;
1489 * This is just an internal convention since a CDC-Only device
1490 * doesn't have to be a switch. But switches already use
1491 * unregistered, so it makes some kind of sense to pick this
1492 * as the primary device. Since a CDC-Only device never sends
1493 * any 'normal' CEC messages this primary device type is never
1494 * sent over the CEC bus.
1496 log_addrs
->primary_device_type
[0] = CEC_OP_PRIM_DEVTYPE_SWITCH
;
1497 log_addrs
->all_device_types
[0] = 0;
1498 log_addrs
->features
[0][0] = 0;
1499 log_addrs
->features
[0][1] = 0;
1502 /* Ensure the osd name is 0-terminated */
1503 log_addrs
->osd_name
[sizeof(log_addrs
->osd_name
) - 1] = '\0';
1506 if (log_addrs
->num_log_addrs
> adap
->available_log_addrs
) {
1507 dprintk(1, "num_log_addrs > %d\n", adap
->available_log_addrs
);
1512 * Vendor ID is a 24 bit number, so check if the value is
1513 * within the correct range.
1515 if (log_addrs
->vendor_id
!= CEC_VENDOR_ID_NONE
&&
1516 (log_addrs
->vendor_id
& 0xff000000) != 0) {
1517 dprintk(1, "invalid vendor ID\n");
1521 if (log_addrs
->cec_version
!= CEC_OP_CEC_VERSION_1_4
&&
1522 log_addrs
->cec_version
!= CEC_OP_CEC_VERSION_2_0
) {
1523 dprintk(1, "invalid CEC version\n");
1527 if (log_addrs
->num_log_addrs
> 1)
1528 for (i
= 0; i
< log_addrs
->num_log_addrs
; i
++)
1529 if (log_addrs
->log_addr_type
[i
] ==
1530 CEC_LOG_ADDR_TYPE_UNREGISTERED
) {
1531 dprintk(1, "num_log_addrs > 1 can't be combined with unregistered LA\n");
1535 for (i
= 0; i
< log_addrs
->num_log_addrs
; i
++) {
1536 const u8 feature_sz
= ARRAY_SIZE(log_addrs
->features
[0]);
1537 u8
*features
= log_addrs
->features
[i
];
1538 bool op_is_dev_features
= false;
1541 log_addrs
->log_addr
[i
] = CEC_LOG_ADDR_INVALID
;
1542 if (type_mask
& (1 << log_addrs
->log_addr_type
[i
])) {
1543 dprintk(1, "duplicate logical address type\n");
1546 type_mask
|= 1 << log_addrs
->log_addr_type
[i
];
1547 if ((type_mask
& (1 << CEC_LOG_ADDR_TYPE_RECORD
)) &&
1548 (type_mask
& (1 << CEC_LOG_ADDR_TYPE_PLAYBACK
))) {
1549 /* Record already contains the playback functionality */
1550 dprintk(1, "invalid record + playback combination\n");
1553 if (log_addrs
->primary_device_type
[i
] >
1554 CEC_OP_PRIM_DEVTYPE_PROCESSOR
) {
1555 dprintk(1, "unknown primary device type\n");
1558 if (log_addrs
->primary_device_type
[i
] == 2) {
1559 dprintk(1, "invalid primary device type\n");
1562 if (log_addrs
->log_addr_type
[i
] > CEC_LOG_ADDR_TYPE_UNREGISTERED
) {
1563 dprintk(1, "unknown logical address type\n");
1566 for (j
= 0; j
< feature_sz
; j
++) {
1567 if ((features
[j
] & 0x80) == 0) {
1568 if (op_is_dev_features
)
1570 op_is_dev_features
= true;
1573 if (!op_is_dev_features
|| j
== feature_sz
) {
1574 dprintk(1, "malformed features\n");
1577 /* Zero unused part of the feature array */
1578 memset(features
+ j
+ 1, 0, feature_sz
- j
- 1);
1581 if (log_addrs
->cec_version
>= CEC_OP_CEC_VERSION_2_0
) {
1582 if (log_addrs
->num_log_addrs
> 2) {
1583 dprintk(1, "CEC 2.0 allows no more than 2 logical addresses\n");
1586 if (log_addrs
->num_log_addrs
== 2) {
1587 if (!(type_mask
& ((1 << CEC_LOG_ADDR_TYPE_AUDIOSYSTEM
) |
1588 (1 << CEC_LOG_ADDR_TYPE_TV
)))) {
1589 dprintk(1, "two LAs is only allowed for audiosystem and TV\n");
1592 if (!(type_mask
& ((1 << CEC_LOG_ADDR_TYPE_PLAYBACK
) |
1593 (1 << CEC_LOG_ADDR_TYPE_RECORD
)))) {
1594 dprintk(1, "an audiosystem/TV can only be combined with record or playback\n");
1600 /* Zero unused LAs */
1601 for (i
= log_addrs
->num_log_addrs
; i
< CEC_MAX_LOG_ADDRS
; i
++) {
1602 log_addrs
->primary_device_type
[i
] = 0;
1603 log_addrs
->log_addr_type
[i
] = 0;
1604 log_addrs
->all_device_types
[i
] = 0;
1605 memset(log_addrs
->features
[i
], 0,
1606 sizeof(log_addrs
->features
[i
]));
1609 log_addrs
->log_addr_mask
= adap
->log_addrs
.log_addr_mask
;
1610 adap
->log_addrs
= *log_addrs
;
1611 if (adap
->phys_addr
!= CEC_PHYS_ADDR_INVALID
)
1612 cec_claim_log_addrs(adap
, block
);
1616 int cec_s_log_addrs(struct cec_adapter
*adap
,
1617 struct cec_log_addrs
*log_addrs
, bool block
)
1621 mutex_lock(&adap
->lock
);
1622 err
= __cec_s_log_addrs(adap
, log_addrs
, block
);
1623 mutex_unlock(&adap
->lock
);
1626 EXPORT_SYMBOL_GPL(cec_s_log_addrs
);
1628 /* High-level core CEC message handling */
1630 /* Fill in the Report Features message */
1631 static void cec_fill_msg_report_features(struct cec_adapter
*adap
,
1632 struct cec_msg
*msg
,
1633 unsigned int la_idx
)
1635 const struct cec_log_addrs
*las
= &adap
->log_addrs
;
1636 const u8
*features
= las
->features
[la_idx
];
1637 bool op_is_dev_features
= false;
1640 /* Report Features */
1641 msg
->msg
[0] = (las
->log_addr
[la_idx
] << 4) | 0x0f;
1643 msg
->msg
[1] = CEC_MSG_REPORT_FEATURES
;
1644 msg
->msg
[2] = adap
->log_addrs
.cec_version
;
1645 msg
->msg
[3] = las
->all_device_types
[la_idx
];
1647 /* Write RC Profiles first, then Device Features */
1648 for (idx
= 0; idx
< ARRAY_SIZE(las
->features
[0]); idx
++) {
1649 msg
->msg
[msg
->len
++] = features
[idx
];
1650 if ((features
[idx
] & CEC_OP_FEAT_EXT
) == 0) {
1651 if (op_is_dev_features
)
1653 op_is_dev_features
= true;
1658 /* Transmit the Feature Abort message */
1659 static int cec_feature_abort_reason(struct cec_adapter
*adap
,
1660 struct cec_msg
*msg
, u8 reason
)
1662 struct cec_msg tx_msg
= { };
1665 * Don't reply with CEC_MSG_FEATURE_ABORT to a CEC_MSG_FEATURE_ABORT
1668 if (msg
->msg
[1] == CEC_MSG_FEATURE_ABORT
)
1670 /* Don't Feature Abort messages from 'Unregistered' */
1671 if (cec_msg_initiator(msg
) == CEC_LOG_ADDR_UNREGISTERED
)
1673 cec_msg_set_reply_to(&tx_msg
, msg
);
1674 cec_msg_feature_abort(&tx_msg
, msg
->msg
[1], reason
);
1675 return cec_transmit_msg(adap
, &tx_msg
, false);
1678 static int cec_feature_abort(struct cec_adapter
*adap
, struct cec_msg
*msg
)
1680 return cec_feature_abort_reason(adap
, msg
,
1681 CEC_OP_ABORT_UNRECOGNIZED_OP
);
1684 static int cec_feature_refused(struct cec_adapter
*adap
, struct cec_msg
*msg
)
1686 return cec_feature_abort_reason(adap
, msg
,
1687 CEC_OP_ABORT_REFUSED
);
1691 * Called when a CEC message is received. This function will do any
1692 * necessary core processing. The is_reply bool is true if this message
1693 * is a reply to an earlier transmit.
1695 * The message is either a broadcast message or a valid directed message.
1697 static int cec_receive_notify(struct cec_adapter
*adap
, struct cec_msg
*msg
,
1700 bool is_broadcast
= cec_msg_is_broadcast(msg
);
1701 u8 dest_laddr
= cec_msg_destination(msg
);
1702 u8 init_laddr
= cec_msg_initiator(msg
);
1703 u8 devtype
= cec_log_addr2dev(adap
, dest_laddr
);
1704 int la_idx
= cec_log_addr2idx(adap
, dest_laddr
);
1705 bool from_unregistered
= init_laddr
== 0xf;
1706 struct cec_msg tx_cec_msg
= { };
1708 dprintk(2, "%s: %*ph\n", __func__
, msg
->len
, msg
->msg
);
1710 /* If this is a CDC-Only device, then ignore any non-CDC messages */
1711 if (cec_is_cdc_only(&adap
->log_addrs
) &&
1712 msg
->msg
[1] != CEC_MSG_CDC_MESSAGE
)
1715 if (adap
->ops
->received
) {
1716 /* Allow drivers to process the message first */
1717 if (adap
->ops
->received(adap
, msg
) != -ENOMSG
)
1722 * REPORT_PHYSICAL_ADDR, CEC_MSG_USER_CONTROL_PRESSED and
1723 * CEC_MSG_USER_CONTROL_RELEASED messages always have to be
1724 * handled by the CEC core, even if the passthrough mode is on.
1725 * The others are just ignored if passthrough mode is on.
1727 switch (msg
->msg
[1]) {
1728 case CEC_MSG_GET_CEC_VERSION
:
1729 case CEC_MSG_GIVE_DEVICE_VENDOR_ID
:
1731 case CEC_MSG_GIVE_DEVICE_POWER_STATUS
:
1732 case CEC_MSG_GIVE_PHYSICAL_ADDR
:
1733 case CEC_MSG_GIVE_OSD_NAME
:
1734 case CEC_MSG_GIVE_FEATURES
:
1736 * Skip processing these messages if the passthrough mode
1739 if (adap
->passthrough
)
1740 goto skip_processing
;
1741 /* Ignore if addressing is wrong */
1742 if (is_broadcast
|| from_unregistered
)
1746 case CEC_MSG_USER_CONTROL_PRESSED
:
1747 case CEC_MSG_USER_CONTROL_RELEASED
:
1748 /* Wrong addressing mode: don't process */
1749 if (is_broadcast
|| from_unregistered
)
1750 goto skip_processing
;
1753 case CEC_MSG_REPORT_PHYSICAL_ADDR
:
1755 * This message is always processed, regardless of the
1756 * passthrough setting.
1758 * Exception: don't process if wrong addressing mode.
1761 goto skip_processing
;
1768 cec_msg_set_reply_to(&tx_cec_msg
, msg
);
1770 switch (msg
->msg
[1]) {
1771 /* The following messages are processed but still passed through */
1772 case CEC_MSG_REPORT_PHYSICAL_ADDR
: {
1773 u16 pa
= (msg
->msg
[2] << 8) | msg
->msg
[3];
1775 if (!from_unregistered
)
1776 adap
->phys_addrs
[init_laddr
] = pa
;
1777 dprintk(1, "reported physical address %x.%x.%x.%x for logical address %d\n",
1778 cec_phys_addr_exp(pa
), init_laddr
);
1782 case CEC_MSG_USER_CONTROL_PRESSED
:
1783 if (!(adap
->capabilities
& CEC_CAP_RC
) ||
1784 !(adap
->log_addrs
.flags
& CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU
))
1787 #ifdef CONFIG_MEDIA_CEC_RC
1788 switch (msg
->msg
[2]) {
1790 * Play function, this message can have variable length
1791 * depending on the specific play function that is used.
1795 rc_keydown(adap
->rc
, RC_TYPE_CEC
,
1798 rc_keydown(adap
->rc
, RC_TYPE_CEC
,
1799 msg
->msg
[2] << 8 | msg
->msg
[3], 0);
1802 * Other function messages that are not handled.
1803 * Currently the RC framework does not allow to supply an
1804 * additional parameter to a keypress. These "keys" contain
1805 * other information such as channel number, an input number
1807 * For the time being these messages are not processed by the
1808 * framework and are simply forwarded to the user space.
1810 case 0x56: case 0x57:
1811 case 0x67: case 0x68: case 0x69: case 0x6a:
1814 rc_keydown(adap
->rc
, RC_TYPE_CEC
, msg
->msg
[2], 0);
1820 case CEC_MSG_USER_CONTROL_RELEASED
:
1821 if (!(adap
->capabilities
& CEC_CAP_RC
) ||
1822 !(adap
->log_addrs
.flags
& CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU
))
1824 #ifdef CONFIG_MEDIA_CEC_RC
1830 * The remaining messages are only processed if the passthrough mode
1833 case CEC_MSG_GET_CEC_VERSION
:
1834 cec_msg_cec_version(&tx_cec_msg
, adap
->log_addrs
.cec_version
);
1835 return cec_transmit_msg(adap
, &tx_cec_msg
, false);
1837 case CEC_MSG_GIVE_PHYSICAL_ADDR
:
1838 /* Do nothing for CEC switches using addr 15 */
1839 if (devtype
== CEC_OP_PRIM_DEVTYPE_SWITCH
&& dest_laddr
== 15)
1841 cec_msg_report_physical_addr(&tx_cec_msg
, adap
->phys_addr
, devtype
);
1842 return cec_transmit_msg(adap
, &tx_cec_msg
, false);
1844 case CEC_MSG_GIVE_DEVICE_VENDOR_ID
:
1845 if (adap
->log_addrs
.vendor_id
== CEC_VENDOR_ID_NONE
)
1846 return cec_feature_abort(adap
, msg
);
1847 cec_msg_device_vendor_id(&tx_cec_msg
, adap
->log_addrs
.vendor_id
);
1848 return cec_transmit_msg(adap
, &tx_cec_msg
, false);
1851 /* Do nothing for CEC switches */
1852 if (devtype
== CEC_OP_PRIM_DEVTYPE_SWITCH
)
1854 return cec_feature_refused(adap
, msg
);
1856 case CEC_MSG_GIVE_OSD_NAME
: {
1857 if (adap
->log_addrs
.osd_name
[0] == 0)
1858 return cec_feature_abort(adap
, msg
);
1859 cec_msg_set_osd_name(&tx_cec_msg
, adap
->log_addrs
.osd_name
);
1860 return cec_transmit_msg(adap
, &tx_cec_msg
, false);
1863 case CEC_MSG_GIVE_FEATURES
:
1864 if (adap
->log_addrs
.cec_version
< CEC_OP_CEC_VERSION_2_0
)
1865 return cec_feature_abort(adap
, msg
);
1866 cec_fill_msg_report_features(adap
, &tx_cec_msg
, la_idx
);
1867 return cec_transmit_msg(adap
, &tx_cec_msg
, false);
1871 * Unprocessed messages are aborted if userspace isn't doing
1872 * any processing either.
1874 if (!is_broadcast
&& !is_reply
&& !adap
->follower_cnt
&&
1875 !adap
->cec_follower
&& msg
->msg
[1] != CEC_MSG_FEATURE_ABORT
)
1876 return cec_feature_abort(adap
, msg
);
1881 /* If this was a reply, then we're done, unless otherwise specified */
1882 if (is_reply
&& !(msg
->flags
& CEC_MSG_FL_REPLY_TO_FOLLOWERS
))
1886 * Send to the exclusive follower if there is one, otherwise send
1889 if (adap
->cec_follower
)
1890 cec_queue_msg_fh(adap
->cec_follower
, msg
);
1892 cec_queue_msg_followers(adap
, msg
);
1897 * Helper functions to keep track of the 'monitor all' use count.
1899 * These functions are called with adap->lock held.
1901 int cec_monitor_all_cnt_inc(struct cec_adapter
*adap
)
1905 if (adap
->monitor_all_cnt
== 0)
1906 ret
= call_op(adap
, adap_monitor_all_enable
, 1);
1908 adap
->monitor_all_cnt
++;
1912 void cec_monitor_all_cnt_dec(struct cec_adapter
*adap
)
1914 adap
->monitor_all_cnt
--;
1915 if (adap
->monitor_all_cnt
== 0)
1916 WARN_ON(call_op(adap
, adap_monitor_all_enable
, 0));
1919 #ifdef CONFIG_DEBUG_FS
1921 * Log the current state of the CEC adapter.
1922 * Very useful for debugging.
1924 int cec_adap_status(struct seq_file
*file
, void *priv
)
1926 struct cec_adapter
*adap
= dev_get_drvdata(file
->private);
1927 struct cec_data
*data
;
1929 mutex_lock(&adap
->lock
);
1930 seq_printf(file
, "configured: %d\n", adap
->is_configured
);
1931 seq_printf(file
, "configuring: %d\n", adap
->is_configuring
);
1932 seq_printf(file
, "phys_addr: %x.%x.%x.%x\n",
1933 cec_phys_addr_exp(adap
->phys_addr
));
1934 seq_printf(file
, "number of LAs: %d\n", adap
->log_addrs
.num_log_addrs
);
1935 seq_printf(file
, "LA mask: 0x%04x\n", adap
->log_addrs
.log_addr_mask
);
1936 if (adap
->cec_follower
)
1937 seq_printf(file
, "has CEC follower%s\n",
1938 adap
->passthrough
? " (in passthrough mode)" : "");
1939 if (adap
->cec_initiator
)
1940 seq_puts(file
, "has CEC initiator\n");
1941 if (adap
->monitor_all_cnt
)
1942 seq_printf(file
, "file handles in Monitor All mode: %u\n",
1943 adap
->monitor_all_cnt
);
1944 data
= adap
->transmitting
;
1946 seq_printf(file
, "transmitting message: %*ph (reply: %02x, timeout: %ums)\n",
1947 data
->msg
.len
, data
->msg
.msg
, data
->msg
.reply
,
1949 seq_printf(file
, "pending transmits: %u\n", adap
->transmit_queue_sz
);
1950 list_for_each_entry(data
, &adap
->transmit_queue
, list
) {
1951 seq_printf(file
, "queued tx message: %*ph (reply: %02x, timeout: %ums)\n",
1952 data
->msg
.len
, data
->msg
.msg
, data
->msg
.reply
,
1955 list_for_each_entry(data
, &adap
->wait_queue
, list
) {
1956 seq_printf(file
, "message waiting for reply: %*ph (reply: %02x, timeout: %ums)\n",
1957 data
->msg
.len
, data
->msg
.msg
, data
->msg
.reply
,
1961 call_void_op(adap
, adap_status
, file
);
1962 mutex_unlock(&adap
->lock
);