2016-06-25 06:44:16 -06:00
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/*
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* cec-adap.c - HDMI Consumer Electronics Control framework - CEC adapter
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*
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* Copyright 2016 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/kmod.h>
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#include <linux/ktime.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include "cec-priv.h"
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2016-12-09 06:36:03 -07:00
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static void cec_fill_msg_report_features(struct cec_adapter *adap,
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struct cec_msg *msg,
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unsigned int la_idx);
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2016-06-25 06:44:16 -06:00
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/*
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* 400 ms is the time it takes for one 16 byte message to be
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* transferred and 5 is the maximum number of retries. Add
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* another 100 ms as a margin. So if the transmit doesn't
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* finish before that time something is really wrong and we
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* have to time out.
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*
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* This is a sign that something it really wrong and a warning
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* will be issued.
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*/
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#define CEC_XFER_TIMEOUT_MS (5 * 400 + 100)
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#define call_op(adap, op, arg...) \
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(adap->ops->op ? adap->ops->op(adap, ## arg) : 0)
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#define call_void_op(adap, op, arg...) \
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do { \
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if (adap->ops->op) \
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adap->ops->op(adap, ## arg); \
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} while (0)
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static int cec_log_addr2idx(const struct cec_adapter *adap, u8 log_addr)
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{
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int i;
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for (i = 0; i < adap->log_addrs.num_log_addrs; i++)
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if (adap->log_addrs.log_addr[i] == log_addr)
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return i;
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return -1;
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}
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static unsigned int cec_log_addr2dev(const struct cec_adapter *adap, u8 log_addr)
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{
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int i = cec_log_addr2idx(adap, log_addr);
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return adap->log_addrs.primary_device_type[i < 0 ? 0 : i];
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}
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/*
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* Queue a new event for this filehandle. If ts == 0, then set it
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* to the current time.
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*
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* The two events that are currently defined do not need to keep track
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* of intermediate events, so no actual queue of events is needed,
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* instead just store the latest state and the total number of lost
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* messages.
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*
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* Should new events be added in the future that require intermediate
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* results to be queued as well, then a proper queue data structure is
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* required. But until then, just keep it simple.
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*/
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void cec_queue_event_fh(struct cec_fh *fh,
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const struct cec_event *new_ev, u64 ts)
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{
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struct cec_event *ev = &fh->events[new_ev->event - 1];
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if (ts == 0)
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ts = ktime_get_ns();
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mutex_lock(&fh->lock);
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if (new_ev->event == CEC_EVENT_LOST_MSGS &&
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fh->pending_events & (1 << new_ev->event)) {
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/*
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* If there is already a lost_msgs event, then just
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* update the lost_msgs count. This effectively
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* merges the old and new events into one.
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*/
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ev->lost_msgs.lost_msgs += new_ev->lost_msgs.lost_msgs;
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goto unlock;
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}
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/*
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* Intermediate states are not interesting, so just
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* overwrite any older event.
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*/
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*ev = *new_ev;
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ev->ts = ts;
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fh->pending_events |= 1 << new_ev->event;
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unlock:
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mutex_unlock(&fh->lock);
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wake_up_interruptible(&fh->wait);
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}
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/* Queue a new event for all open filehandles. */
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static void cec_queue_event(struct cec_adapter *adap,
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const struct cec_event *ev)
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{
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u64 ts = ktime_get_ns();
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struct cec_fh *fh;
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2016-08-02 05:11:00 -06:00
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mutex_lock(&adap->devnode.lock);
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2016-06-25 06:44:16 -06:00
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list_for_each_entry(fh, &adap->devnode.fhs, list)
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cec_queue_event_fh(fh, ev, ts);
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2016-08-02 05:11:00 -06:00
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mutex_unlock(&adap->devnode.lock);
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2016-06-25 06:44:16 -06:00
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}
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/*
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* Queue a new message for this filehandle. If there is no more room
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* in the queue, then send the LOST_MSGS event instead.
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*/
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static void cec_queue_msg_fh(struct cec_fh *fh, const struct cec_msg *msg)
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{
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static const struct cec_event ev_lost_msg = {
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2016-07-12 16:30:55 -06:00
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.ts = 0,
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2016-06-25 06:44:16 -06:00
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.event = CEC_EVENT_LOST_MSGS,
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2016-07-12 16:30:55 -06:00
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.flags = 0,
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{
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.lost_msgs.lost_msgs = 1,
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},
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2016-06-25 06:44:16 -06:00
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};
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struct cec_msg_entry *entry;
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mutex_lock(&fh->lock);
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entry = kmalloc(sizeof(*entry), GFP_KERNEL);
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if (!entry)
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goto lost_msgs;
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entry->msg = *msg;
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/* Add new msg at the end of the queue */
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list_add_tail(&entry->list, &fh->msgs);
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/*
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2016-07-17 08:40:05 -06:00
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* if the queue now has more than CEC_MAX_MSG_RX_QUEUE_SZ
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2016-06-25 06:44:16 -06:00
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* messages, drop the oldest one and send a lost message event.
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*/
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2016-07-17 08:40:05 -06:00
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if (fh->queued_msgs == CEC_MAX_MSG_RX_QUEUE_SZ) {
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2016-06-25 06:44:16 -06:00
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list_del(&entry->list);
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goto lost_msgs;
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}
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fh->queued_msgs++;
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mutex_unlock(&fh->lock);
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wake_up_interruptible(&fh->wait);
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return;
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lost_msgs:
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mutex_unlock(&fh->lock);
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cec_queue_event_fh(fh, &ev_lost_msg, 0);
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}
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/*
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* Queue the message for those filehandles that are in monitor mode.
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* If valid_la is true (this message is for us or was sent by us),
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* then pass it on to any monitoring filehandle. If this message
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* isn't for us or from us, then only give it to filehandles that
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* are in MONITOR_ALL mode.
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*
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* This can only happen if the CEC_CAP_MONITOR_ALL capability is
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* set and the CEC adapter was placed in 'monitor all' mode.
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*/
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static void cec_queue_msg_monitor(struct cec_adapter *adap,
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const struct cec_msg *msg,
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bool valid_la)
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{
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struct cec_fh *fh;
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u32 monitor_mode = valid_la ? CEC_MODE_MONITOR :
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CEC_MODE_MONITOR_ALL;
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2016-08-02 05:11:00 -06:00
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mutex_lock(&adap->devnode.lock);
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2016-06-25 06:44:16 -06:00
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list_for_each_entry(fh, &adap->devnode.fhs, list) {
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if (fh->mode_follower >= monitor_mode)
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cec_queue_msg_fh(fh, msg);
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}
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2016-08-02 05:11:00 -06:00
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mutex_unlock(&adap->devnode.lock);
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2016-06-25 06:44:16 -06:00
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}
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/*
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* Queue the message for follower filehandles.
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*/
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static void cec_queue_msg_followers(struct cec_adapter *adap,
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const struct cec_msg *msg)
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{
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struct cec_fh *fh;
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2016-08-02 05:11:00 -06:00
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mutex_lock(&adap->devnode.lock);
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2016-06-25 06:44:16 -06:00
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list_for_each_entry(fh, &adap->devnode.fhs, list) {
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if (fh->mode_follower == CEC_MODE_FOLLOWER)
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cec_queue_msg_fh(fh, msg);
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}
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2016-08-02 05:11:00 -06:00
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mutex_unlock(&adap->devnode.lock);
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2016-06-25 06:44:16 -06:00
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}
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/* Notify userspace of an adapter state change. */
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static void cec_post_state_event(struct cec_adapter *adap)
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{
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struct cec_event ev = {
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.event = CEC_EVENT_STATE_CHANGE,
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};
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ev.state_change.phys_addr = adap->phys_addr;
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ev.state_change.log_addr_mask = adap->log_addrs.log_addr_mask;
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cec_queue_event(adap, &ev);
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}
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/*
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* A CEC transmit (and a possible wait for reply) completed.
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* If this was in blocking mode, then complete it, otherwise
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* queue the message for userspace to dequeue later.
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*
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* This function is called with adap->lock held.
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*/
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static void cec_data_completed(struct cec_data *data)
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{
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/*
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* Delete this transmit from the filehandle's xfer_list since
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* we're done with it.
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*
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* Note that if the filehandle is closed before this transmit
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* finished, then the release() function will set data->fh to NULL.
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* Without that we would be referring to a closed filehandle.
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*/
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if (data->fh)
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list_del(&data->xfer_list);
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if (data->blocking) {
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/*
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* Someone is blocking so mark the message as completed
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* and call complete.
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*/
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data->completed = true;
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complete(&data->c);
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} else {
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/*
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* No blocking, so just queue the message if needed and
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* free the memory.
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*/
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if (data->fh)
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cec_queue_msg_fh(data->fh, &data->msg);
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kfree(data);
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}
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}
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/*
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* A pending CEC transmit needs to be cancelled, either because the CEC
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* adapter is disabled or the transmit takes an impossibly long time to
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* finish.
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*
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* This function is called with adap->lock held.
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*/
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static void cec_data_cancel(struct cec_data *data)
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{
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/*
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* It's either the current transmit, or it is a pending
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* transmit. Take the appropriate action to clear it.
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*/
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2016-07-17 08:40:05 -06:00
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if (data->adap->transmitting == data) {
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2016-06-25 06:44:16 -06:00
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data->adap->transmitting = NULL;
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2016-07-17 08:40:05 -06:00
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} else {
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2016-06-25 06:44:16 -06:00
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list_del_init(&data->list);
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2016-07-17 08:40:05 -06:00
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if (!(data->msg.tx_status & CEC_TX_STATUS_OK))
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data->adap->transmit_queue_sz--;
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}
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2016-06-25 06:44:16 -06:00
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/* Mark it as an error */
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2016-07-12 08:10:42 -06:00
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data->msg.tx_ts = ktime_get_ns();
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2016-12-09 06:14:32 -07:00
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data->msg.tx_status |= CEC_TX_STATUS_ERROR |
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CEC_TX_STATUS_MAX_RETRIES;
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data->msg.tx_error_cnt++;
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2016-06-25 06:44:16 -06:00
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data->attempts = 0;
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/* Queue transmitted message for monitoring purposes */
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cec_queue_msg_monitor(data->adap, &data->msg, 1);
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cec_data_completed(data);
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}
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/*
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* Main CEC state machine
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*
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* Wait until the thread should be stopped, or we are not transmitting and
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* a new transmit message is queued up, in which case we start transmitting
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* that message. When the adapter finished transmitting the message it will
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* call cec_transmit_done().
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*
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* If the adapter is disabled, then remove all queued messages instead.
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*
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* If the current transmit times out, then cancel that transmit.
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*/
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int cec_thread_func(void *_adap)
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{
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struct cec_adapter *adap = _adap;
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for (;;) {
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unsigned int signal_free_time;
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struct cec_data *data;
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bool timeout = false;
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u8 attempts;
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if (adap->transmitting) {
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int err;
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/*
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* We are transmitting a message, so add a timeout
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* to prevent the state machine to get stuck waiting
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* for this message to finalize and add a check to
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* see if the adapter is disabled in which case the
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* transmit should be canceled.
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*/
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err = wait_event_interruptible_timeout(adap->kthread_waitq,
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kthread_should_stop() ||
|
2016-07-17 08:42:06 -06:00
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(!adap->is_configured && !adap->is_configuring) ||
|
2016-06-25 06:44:16 -06:00
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(!adap->transmitting &&
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!list_empty(&adap->transmit_queue)),
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msecs_to_jiffies(CEC_XFER_TIMEOUT_MS));
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timeout = err == 0;
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} else {
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/* Otherwise we just wait for something to happen. */
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wait_event_interruptible(adap->kthread_waitq,
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kthread_should_stop() ||
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(!adap->transmitting &&
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!list_empty(&adap->transmit_queue)));
|
|
|
|
}
|
|
|
|
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
|
2016-07-17 08:42:06 -06:00
|
|
|
if ((!adap->is_configured && !adap->is_configuring) ||
|
2016-06-25 06:44:16 -06:00
|
|
|
kthread_should_stop()) {
|
|
|
|
/*
|
|
|
|
* If the adapter is disabled, or we're asked to stop,
|
|
|
|
* then cancel any pending transmits.
|
|
|
|
*/
|
|
|
|
while (!list_empty(&adap->transmit_queue)) {
|
|
|
|
data = list_first_entry(&adap->transmit_queue,
|
|
|
|
struct cec_data, list);
|
|
|
|
cec_data_cancel(data);
|
|
|
|
}
|
|
|
|
if (adap->transmitting)
|
|
|
|
cec_data_cancel(adap->transmitting);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Cancel the pending timeout work. We have to unlock
|
|
|
|
* the mutex when flushing the work since
|
|
|
|
* cec_wait_timeout() will take it. This is OK since
|
|
|
|
* no new entries can be added to wait_queue as long
|
|
|
|
* as adap->transmitting is NULL, which it is due to
|
|
|
|
* the cec_data_cancel() above.
|
|
|
|
*/
|
|
|
|
while (!list_empty(&adap->wait_queue)) {
|
|
|
|
data = list_first_entry(&adap->wait_queue,
|
|
|
|
struct cec_data, list);
|
|
|
|
|
|
|
|
if (!cancel_delayed_work(&data->work)) {
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
flush_scheduled_work();
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
}
|
|
|
|
cec_data_cancel(data);
|
|
|
|
}
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (adap->transmitting && timeout) {
|
|
|
|
/*
|
|
|
|
* If we timeout, then log that. This really shouldn't
|
|
|
|
* happen and is an indication of a faulty CEC adapter
|
|
|
|
* driver, or the CEC bus is in some weird state.
|
|
|
|
*/
|
|
|
|
dprintk(0, "message %*ph timed out!\n",
|
|
|
|
adap->transmitting->msg.len,
|
|
|
|
adap->transmitting->msg.msg);
|
|
|
|
/* Just give up on this. */
|
|
|
|
cec_data_cancel(adap->transmitting);
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we are still transmitting, or there is nothing new to
|
|
|
|
* transmit, then just continue waiting.
|
|
|
|
*/
|
|
|
|
if (adap->transmitting || list_empty(&adap->transmit_queue))
|
|
|
|
goto unlock;
|
|
|
|
|
|
|
|
/* Get a new message to transmit */
|
|
|
|
data = list_first_entry(&adap->transmit_queue,
|
|
|
|
struct cec_data, list);
|
|
|
|
list_del_init(&data->list);
|
2016-07-17 08:40:05 -06:00
|
|
|
adap->transmit_queue_sz--;
|
2016-06-25 06:44:16 -06:00
|
|
|
/* Make this the current transmitting message */
|
|
|
|
adap->transmitting = data;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Suggested number of attempts as per the CEC 2.0 spec:
|
|
|
|
* 4 attempts is the default, except for 'secondary poll
|
|
|
|
* messages', i.e. poll messages not sent during the adapter
|
|
|
|
* configuration phase when it allocates logical addresses.
|
|
|
|
*/
|
|
|
|
if (data->msg.len == 1 && adap->is_configured)
|
|
|
|
attempts = 2;
|
|
|
|
else
|
|
|
|
attempts = 4;
|
|
|
|
|
|
|
|
/* Set the suggested signal free time */
|
|
|
|
if (data->attempts) {
|
|
|
|
/* should be >= 3 data bit periods for a retry */
|
|
|
|
signal_free_time = CEC_SIGNAL_FREE_TIME_RETRY;
|
|
|
|
} else if (data->new_initiator) {
|
|
|
|
/* should be >= 5 data bit periods for new initiator */
|
|
|
|
signal_free_time = CEC_SIGNAL_FREE_TIME_NEW_INITIATOR;
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* should be >= 7 data bit periods for sending another
|
|
|
|
* frame immediately after another.
|
|
|
|
*/
|
|
|
|
signal_free_time = CEC_SIGNAL_FREE_TIME_NEXT_XFER;
|
|
|
|
}
|
|
|
|
if (data->attempts == 0)
|
|
|
|
data->attempts = attempts;
|
|
|
|
|
|
|
|
/* Tell the adapter to transmit, cancel on error */
|
|
|
|
if (adap->ops->adap_transmit(adap, data->attempts,
|
|
|
|
signal_free_time, &data->msg))
|
|
|
|
cec_data_cancel(data);
|
|
|
|
|
|
|
|
unlock:
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
|
|
|
|
if (kthread_should_stop())
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Called by the CEC adapter if a transmit finished.
|
|
|
|
*/
|
|
|
|
void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt,
|
|
|
|
u8 nack_cnt, u8 low_drive_cnt, u8 error_cnt)
|
|
|
|
{
|
|
|
|
struct cec_data *data;
|
|
|
|
struct cec_msg *msg;
|
2016-07-12 08:10:42 -06:00
|
|
|
u64 ts = ktime_get_ns();
|
2016-06-25 06:44:16 -06:00
|
|
|
|
|
|
|
dprintk(2, "cec_transmit_done %02x\n", status);
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
data = adap->transmitting;
|
|
|
|
if (!data) {
|
|
|
|
/*
|
|
|
|
* This can happen if a transmit was issued and the cable is
|
|
|
|
* unplugged while the transmit is ongoing. Ignore this
|
|
|
|
* transmit in that case.
|
|
|
|
*/
|
|
|
|
dprintk(1, "cec_transmit_done without an ongoing transmit!\n");
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
msg = &data->msg;
|
|
|
|
|
|
|
|
/* Drivers must fill in the status! */
|
|
|
|
WARN_ON(status == 0);
|
2016-07-12 08:10:42 -06:00
|
|
|
msg->tx_ts = ts;
|
2016-06-25 06:44:16 -06:00
|
|
|
msg->tx_status |= status;
|
|
|
|
msg->tx_arb_lost_cnt += arb_lost_cnt;
|
|
|
|
msg->tx_nack_cnt += nack_cnt;
|
|
|
|
msg->tx_low_drive_cnt += low_drive_cnt;
|
|
|
|
msg->tx_error_cnt += error_cnt;
|
|
|
|
|
|
|
|
/* Mark that we're done with this transmit */
|
|
|
|
adap->transmitting = NULL;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If there are still retry attempts left and there was an error and
|
|
|
|
* the hardware didn't signal that it retried itself (by setting
|
|
|
|
* CEC_TX_STATUS_MAX_RETRIES), then we will retry ourselves.
|
|
|
|
*/
|
|
|
|
if (data->attempts > 1 &&
|
|
|
|
!(status & (CEC_TX_STATUS_MAX_RETRIES | CEC_TX_STATUS_OK))) {
|
|
|
|
/* Retry this message */
|
|
|
|
data->attempts--;
|
|
|
|
/* Add the message in front of the transmit queue */
|
|
|
|
list_add(&data->list, &adap->transmit_queue);
|
2016-07-17 08:40:05 -06:00
|
|
|
adap->transmit_queue_sz++;
|
2016-06-25 06:44:16 -06:00
|
|
|
goto wake_thread;
|
|
|
|
}
|
|
|
|
|
|
|
|
data->attempts = 0;
|
|
|
|
|
|
|
|
/* Always set CEC_TX_STATUS_MAX_RETRIES on error */
|
|
|
|
if (!(status & CEC_TX_STATUS_OK))
|
|
|
|
msg->tx_status |= CEC_TX_STATUS_MAX_RETRIES;
|
|
|
|
|
|
|
|
/* Queue transmitted message for monitoring purposes */
|
|
|
|
cec_queue_msg_monitor(adap, msg, 1);
|
|
|
|
|
2016-07-13 01:33:58 -06:00
|
|
|
if ((status & CEC_TX_STATUS_OK) && adap->is_configured &&
|
|
|
|
msg->timeout) {
|
2016-06-25 06:44:16 -06:00
|
|
|
/*
|
|
|
|
* Queue the message into the wait queue if we want to wait
|
|
|
|
* for a reply.
|
|
|
|
*/
|
|
|
|
list_add_tail(&data->list, &adap->wait_queue);
|
|
|
|
schedule_delayed_work(&data->work,
|
|
|
|
msecs_to_jiffies(msg->timeout));
|
|
|
|
} else {
|
|
|
|
/* Otherwise we're done */
|
|
|
|
cec_data_completed(data);
|
|
|
|
}
|
|
|
|
|
|
|
|
wake_thread:
|
|
|
|
/*
|
|
|
|
* Wake up the main thread to see if another message is ready
|
|
|
|
* for transmitting or to retry the current message.
|
|
|
|
*/
|
|
|
|
wake_up_interruptible(&adap->kthread_waitq);
|
|
|
|
unlock:
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(cec_transmit_done);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Called when waiting for a reply times out.
|
|
|
|
*/
|
|
|
|
static void cec_wait_timeout(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct cec_data *data = container_of(work, struct cec_data, work.work);
|
|
|
|
struct cec_adapter *adap = data->adap;
|
|
|
|
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
/*
|
|
|
|
* Sanity check in case the timeout and the arrival of the message
|
|
|
|
* happened at the same time.
|
|
|
|
*/
|
|
|
|
if (list_empty(&data->list))
|
|
|
|
goto unlock;
|
|
|
|
|
|
|
|
/* Mark the message as timed out */
|
|
|
|
list_del_init(&data->list);
|
2016-07-12 08:10:42 -06:00
|
|
|
data->msg.rx_ts = ktime_get_ns();
|
2016-06-25 06:44:16 -06:00
|
|
|
data->msg.rx_status = CEC_RX_STATUS_TIMEOUT;
|
|
|
|
cec_data_completed(data);
|
|
|
|
unlock:
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Transmit a message. The fh argument may be NULL if the transmit is not
|
|
|
|
* associated with a specific filehandle.
|
|
|
|
*
|
|
|
|
* This function is called with adap->lock held.
|
|
|
|
*/
|
|
|
|
int cec_transmit_msg_fh(struct cec_adapter *adap, struct cec_msg *msg,
|
|
|
|
struct cec_fh *fh, bool block)
|
|
|
|
{
|
|
|
|
struct cec_data *data;
|
|
|
|
u8 last_initiator = 0xff;
|
|
|
|
unsigned int timeout;
|
|
|
|
int res = 0;
|
|
|
|
|
2016-07-16 06:44:13 -06:00
|
|
|
msg->rx_ts = 0;
|
|
|
|
msg->tx_ts = 0;
|
|
|
|
msg->rx_status = 0;
|
|
|
|
msg->tx_status = 0;
|
|
|
|
msg->tx_arb_lost_cnt = 0;
|
|
|
|
msg->tx_nack_cnt = 0;
|
|
|
|
msg->tx_low_drive_cnt = 0;
|
|
|
|
msg->tx_error_cnt = 0;
|
|
|
|
msg->sequence = ++adap->sequence;
|
|
|
|
if (!msg->sequence)
|
|
|
|
msg->sequence = ++adap->sequence;
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
if (msg->reply && msg->timeout == 0) {
|
|
|
|
/* Make sure the timeout isn't 0. */
|
|
|
|
msg->timeout = 1000;
|
|
|
|
}
|
2016-11-04 03:52:11 -06:00
|
|
|
if (msg->timeout)
|
|
|
|
msg->flags &= CEC_MSG_FL_REPLY_TO_FOLLOWERS;
|
|
|
|
else
|
|
|
|
msg->flags = 0;
|
2016-06-25 06:44:16 -06:00
|
|
|
|
|
|
|
/* Sanity checks */
|
|
|
|
if (msg->len == 0 || msg->len > CEC_MAX_MSG_SIZE) {
|
|
|
|
dprintk(1, "cec_transmit_msg: invalid length %d\n", msg->len);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (msg->timeout && msg->len == 1) {
|
|
|
|
dprintk(1, "cec_transmit_msg: can't reply for poll msg\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2016-07-17 02:16:40 -06:00
|
|
|
memset(msg->msg + msg->len, 0, sizeof(msg->msg) - msg->len);
|
2016-06-25 06:44:16 -06:00
|
|
|
if (msg->len == 1) {
|
2017-02-11 04:24:46 -07:00
|
|
|
if (cec_msg_destination(msg) == 0xf) {
|
2016-06-25 06:44:16 -06:00
|
|
|
dprintk(1, "cec_transmit_msg: invalid poll message\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (cec_has_log_addr(adap, cec_msg_destination(msg))) {
|
|
|
|
/*
|
|
|
|
* If the destination is a logical address our adapter
|
|
|
|
* has already claimed, then just NACK this.
|
|
|
|
* It depends on the hardware what it will do with a
|
|
|
|
* POLL to itself (some OK this), so it is just as
|
|
|
|
* easy to handle it here so the behavior will be
|
|
|
|
* consistent.
|
|
|
|
*/
|
2016-07-15 08:13:49 -06:00
|
|
|
msg->tx_ts = ktime_get_ns();
|
2016-06-25 06:44:16 -06:00
|
|
|
msg->tx_status = CEC_TX_STATUS_NACK |
|
|
|
|
CEC_TX_STATUS_MAX_RETRIES;
|
|
|
|
msg->tx_nack_cnt = 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (msg->len > 1 && !cec_msg_is_broadcast(msg) &&
|
|
|
|
cec_has_log_addr(adap, cec_msg_destination(msg))) {
|
|
|
|
dprintk(1, "cec_transmit_msg: destination is the adapter itself\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2017-02-11 04:24:46 -07:00
|
|
|
if (msg->len > 1 && adap->is_configured &&
|
2016-06-25 06:44:16 -06:00
|
|
|
!cec_has_log_addr(adap, cec_msg_initiator(msg))) {
|
|
|
|
dprintk(1, "cec_transmit_msg: initiator has unknown logical address %d\n",
|
|
|
|
cec_msg_initiator(msg));
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (!adap->is_configured && !adap->is_configuring)
|
|
|
|
return -ENONET;
|
|
|
|
|
2016-07-17 08:40:05 -06:00
|
|
|
if (adap->transmit_queue_sz >= CEC_MAX_MSG_TX_QUEUE_SZ)
|
|
|
|
return -EBUSY;
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
|
|
|
if (!data)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
if (msg->len > 1 && msg->msg[1] == CEC_MSG_CDC_MESSAGE) {
|
|
|
|
msg->msg[2] = adap->phys_addr >> 8;
|
|
|
|
msg->msg[3] = adap->phys_addr & 0xff;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (msg->timeout)
|
|
|
|
dprintk(2, "cec_transmit_msg: %*ph (wait for 0x%02x%s)\n",
|
|
|
|
msg->len, msg->msg, msg->reply, !block ? ", nb" : "");
|
|
|
|
else
|
|
|
|
dprintk(2, "cec_transmit_msg: %*ph%s\n",
|
|
|
|
msg->len, msg->msg, !block ? " (nb)" : "");
|
|
|
|
|
|
|
|
data->msg = *msg;
|
|
|
|
data->fh = fh;
|
|
|
|
data->adap = adap;
|
|
|
|
data->blocking = block;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine if this message follows a message from the same
|
|
|
|
* initiator. Needed to determine the free signal time later on.
|
|
|
|
*/
|
|
|
|
if (msg->len > 1) {
|
|
|
|
if (!(list_empty(&adap->transmit_queue))) {
|
|
|
|
const struct cec_data *last;
|
|
|
|
|
|
|
|
last = list_last_entry(&adap->transmit_queue,
|
|
|
|
const struct cec_data, list);
|
|
|
|
last_initiator = cec_msg_initiator(&last->msg);
|
|
|
|
} else if (adap->transmitting) {
|
|
|
|
last_initiator =
|
|
|
|
cec_msg_initiator(&adap->transmitting->msg);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
data->new_initiator = last_initiator != cec_msg_initiator(msg);
|
|
|
|
init_completion(&data->c);
|
|
|
|
INIT_DELAYED_WORK(&data->work, cec_wait_timeout);
|
|
|
|
|
|
|
|
if (fh)
|
|
|
|
list_add_tail(&data->xfer_list, &fh->xfer_list);
|
|
|
|
list_add_tail(&data->list, &adap->transmit_queue);
|
2016-07-17 08:40:05 -06:00
|
|
|
adap->transmit_queue_sz++;
|
2016-06-25 06:44:16 -06:00
|
|
|
if (!adap->transmitting)
|
|
|
|
wake_up_interruptible(&adap->kthread_waitq);
|
|
|
|
|
|
|
|
/* All done if we don't need to block waiting for completion */
|
|
|
|
if (!block)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we don't get a completion before this time something is really
|
|
|
|
* wrong and we time out.
|
|
|
|
*/
|
|
|
|
timeout = CEC_XFER_TIMEOUT_MS;
|
|
|
|
/* Add the requested timeout if we have to wait for a reply as well */
|
|
|
|
if (msg->timeout)
|
|
|
|
timeout += msg->timeout;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Release the lock and wait, retake the lock afterwards.
|
|
|
|
*/
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
res = wait_for_completion_killable_timeout(&data->c,
|
|
|
|
msecs_to_jiffies(timeout));
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
|
|
|
|
if (data->completed) {
|
|
|
|
/* The transmit completed (possibly with an error) */
|
|
|
|
*msg = data->msg;
|
|
|
|
kfree(data);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* The wait for completion timed out or was interrupted, so mark this
|
|
|
|
* as non-blocking and disconnect from the filehandle since it is
|
|
|
|
* still 'in flight'. When it finally completes it will just drop the
|
|
|
|
* result silently.
|
|
|
|
*/
|
|
|
|
data->blocking = false;
|
|
|
|
if (data->fh)
|
|
|
|
list_del(&data->xfer_list);
|
|
|
|
data->fh = NULL;
|
|
|
|
|
|
|
|
if (res == 0) { /* timed out */
|
|
|
|
/* Check if the reply or the transmit failed */
|
|
|
|
if (msg->timeout && (msg->tx_status & CEC_TX_STATUS_OK))
|
|
|
|
msg->rx_status = CEC_RX_STATUS_TIMEOUT;
|
|
|
|
else
|
|
|
|
msg->tx_status = CEC_TX_STATUS_MAX_RETRIES;
|
|
|
|
}
|
|
|
|
return res > 0 ? 0 : res;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Helper function to be used by drivers and this framework. */
|
|
|
|
int cec_transmit_msg(struct cec_adapter *adap, struct cec_msg *msg,
|
|
|
|
bool block)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
ret = cec_transmit_msg_fh(adap, msg, NULL, block);
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(cec_transmit_msg);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* I don't like forward references but without this the low-level
|
|
|
|
* cec_received_msg() function would come after a bunch of high-level
|
|
|
|
* CEC protocol handling functions. That was very confusing.
|
|
|
|
*/
|
|
|
|
static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg,
|
|
|
|
bool is_reply);
|
|
|
|
|
2016-11-01 06:48:22 -06:00
|
|
|
#define DIRECTED 0x80
|
|
|
|
#define BCAST1_4 0x40
|
|
|
|
#define BCAST2_0 0x20 /* broadcast only allowed for >= 2.0 */
|
|
|
|
#define BCAST (BCAST1_4 | BCAST2_0)
|
|
|
|
#define BOTH (BCAST | DIRECTED)
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Specify minimum length and whether the message is directed, broadcast
|
|
|
|
* or both. Messages that do not match the criteria are ignored as per
|
|
|
|
* the CEC specification.
|
|
|
|
*/
|
|
|
|
static const u8 cec_msg_size[256] = {
|
|
|
|
[CEC_MSG_ACTIVE_SOURCE] = 4 | BCAST,
|
|
|
|
[CEC_MSG_IMAGE_VIEW_ON] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_TEXT_VIEW_ON] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_INACTIVE_SOURCE] = 4 | DIRECTED,
|
|
|
|
[CEC_MSG_REQUEST_ACTIVE_SOURCE] = 2 | BCAST,
|
|
|
|
[CEC_MSG_ROUTING_CHANGE] = 6 | BCAST,
|
|
|
|
[CEC_MSG_ROUTING_INFORMATION] = 4 | BCAST,
|
|
|
|
[CEC_MSG_SET_STREAM_PATH] = 4 | BCAST,
|
|
|
|
[CEC_MSG_STANDBY] = 2 | BOTH,
|
|
|
|
[CEC_MSG_RECORD_OFF] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_RECORD_ON] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_RECORD_STATUS] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_RECORD_TV_SCREEN] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_CLEAR_ANALOGUE_TIMER] = 13 | DIRECTED,
|
|
|
|
[CEC_MSG_CLEAR_DIGITAL_TIMER] = 16 | DIRECTED,
|
|
|
|
[CEC_MSG_CLEAR_EXT_TIMER] = 13 | DIRECTED,
|
|
|
|
[CEC_MSG_SET_ANALOGUE_TIMER] = 13 | DIRECTED,
|
|
|
|
[CEC_MSG_SET_DIGITAL_TIMER] = 16 | DIRECTED,
|
|
|
|
[CEC_MSG_SET_EXT_TIMER] = 13 | DIRECTED,
|
|
|
|
[CEC_MSG_SET_TIMER_PROGRAM_TITLE] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_TIMER_CLEARED_STATUS] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_TIMER_STATUS] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_CEC_VERSION] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_GET_CEC_VERSION] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_GIVE_PHYSICAL_ADDR] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_GET_MENU_LANGUAGE] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_REPORT_PHYSICAL_ADDR] = 5 | BCAST,
|
|
|
|
[CEC_MSG_SET_MENU_LANGUAGE] = 5 | BCAST,
|
|
|
|
[CEC_MSG_REPORT_FEATURES] = 6 | BCAST,
|
|
|
|
[CEC_MSG_GIVE_FEATURES] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_DECK_CONTROL] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_DECK_STATUS] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_GIVE_DECK_STATUS] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_PLAY] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_GIVE_TUNER_DEVICE_STATUS] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_SELECT_ANALOGUE_SERVICE] = 6 | DIRECTED,
|
|
|
|
[CEC_MSG_SELECT_DIGITAL_SERVICE] = 9 | DIRECTED,
|
|
|
|
[CEC_MSG_TUNER_DEVICE_STATUS] = 7 | DIRECTED,
|
|
|
|
[CEC_MSG_TUNER_STEP_DECREMENT] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_TUNER_STEP_INCREMENT] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_DEVICE_VENDOR_ID] = 5 | BCAST,
|
|
|
|
[CEC_MSG_GIVE_DEVICE_VENDOR_ID] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_VENDOR_COMMAND] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_VENDOR_COMMAND_WITH_ID] = 5 | BOTH,
|
|
|
|
[CEC_MSG_VENDOR_REMOTE_BUTTON_DOWN] = 2 | BOTH,
|
|
|
|
[CEC_MSG_VENDOR_REMOTE_BUTTON_UP] = 2 | BOTH,
|
|
|
|
[CEC_MSG_SET_OSD_STRING] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_GIVE_OSD_NAME] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_SET_OSD_NAME] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_MENU_REQUEST] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_MENU_STATUS] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_USER_CONTROL_PRESSED] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_USER_CONTROL_RELEASED] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_GIVE_DEVICE_POWER_STATUS] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_REPORT_POWER_STATUS] = 3 | DIRECTED | BCAST2_0,
|
|
|
|
[CEC_MSG_FEATURE_ABORT] = 4 | DIRECTED,
|
|
|
|
[CEC_MSG_ABORT] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_GIVE_AUDIO_STATUS] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_GIVE_SYSTEM_AUDIO_MODE_STATUS] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_REPORT_AUDIO_STATUS] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_REPORT_SHORT_AUDIO_DESCRIPTOR] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_REQUEST_SHORT_AUDIO_DESCRIPTOR] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_SET_SYSTEM_AUDIO_MODE] = 3 | BOTH,
|
|
|
|
[CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_SYSTEM_AUDIO_MODE_STATUS] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_SET_AUDIO_RATE] = 3 | DIRECTED,
|
|
|
|
[CEC_MSG_INITIATE_ARC] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_REPORT_ARC_INITIATED] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_REPORT_ARC_TERMINATED] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_REQUEST_ARC_INITIATION] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_REQUEST_ARC_TERMINATION] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_TERMINATE_ARC] = 2 | DIRECTED,
|
|
|
|
[CEC_MSG_REQUEST_CURRENT_LATENCY] = 4 | BCAST,
|
2016-12-06 06:17:12 -07:00
|
|
|
[CEC_MSG_REPORT_CURRENT_LATENCY] = 6 | BCAST,
|
2016-11-01 06:48:22 -06:00
|
|
|
[CEC_MSG_CDC_MESSAGE] = 2 | BCAST,
|
|
|
|
};
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
/* Called by the CEC adapter if a message is received */
|
|
|
|
void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg)
|
|
|
|
{
|
|
|
|
struct cec_data *data;
|
|
|
|
u8 msg_init = cec_msg_initiator(msg);
|
|
|
|
u8 msg_dest = cec_msg_destination(msg);
|
2016-11-01 06:48:22 -06:00
|
|
|
u8 cmd = msg->msg[1];
|
2016-06-25 06:44:16 -06:00
|
|
|
bool is_reply = false;
|
|
|
|
bool valid_la = true;
|
2016-11-01 06:48:22 -06:00
|
|
|
u8 min_len = 0;
|
2016-06-25 06:44:16 -06:00
|
|
|
|
2016-07-12 08:10:41 -06:00
|
|
|
if (WARN_ON(!msg->len || msg->len > CEC_MAX_MSG_SIZE))
|
|
|
|
return;
|
|
|
|
|
2016-11-21 08:15:45 -07:00
|
|
|
/*
|
|
|
|
* Some CEC adapters will receive the messages that they transmitted.
|
|
|
|
* This test filters out those messages by checking if we are the
|
|
|
|
* initiator, and just returning in that case.
|
|
|
|
*
|
|
|
|
* Note that this won't work if this is an Unregistered device.
|
|
|
|
*
|
|
|
|
* It is bad practice if the hardware receives the message that it
|
|
|
|
* transmitted and luckily most CEC adapters behave correctly in this
|
|
|
|
* respect.
|
|
|
|
*/
|
|
|
|
if (msg_init != CEC_LOG_ADDR_UNREGISTERED &&
|
|
|
|
cec_has_log_addr(adap, msg_init))
|
|
|
|
return;
|
|
|
|
|
2016-07-12 08:10:42 -06:00
|
|
|
msg->rx_ts = ktime_get_ns();
|
2016-06-25 06:44:16 -06:00
|
|
|
msg->rx_status = CEC_RX_STATUS_OK;
|
|
|
|
msg->sequence = msg->reply = msg->timeout = 0;
|
2016-07-12 08:10:42 -06:00
|
|
|
msg->tx_status = 0;
|
|
|
|
msg->tx_ts = 0;
|
2016-11-09 07:10:59 -07:00
|
|
|
msg->tx_arb_lost_cnt = 0;
|
|
|
|
msg->tx_nack_cnt = 0;
|
|
|
|
msg->tx_low_drive_cnt = 0;
|
|
|
|
msg->tx_error_cnt = 0;
|
2016-06-25 06:44:16 -06:00
|
|
|
msg->flags = 0;
|
2016-07-17 02:16:40 -06:00
|
|
|
memset(msg->msg + msg->len, 0, sizeof(msg->msg) - msg->len);
|
2016-06-25 06:44:16 -06:00
|
|
|
|
2016-07-12 08:10:42 -06:00
|
|
|
mutex_lock(&adap->lock);
|
2016-06-25 06:44:16 -06:00
|
|
|
dprintk(2, "cec_received_msg: %*ph\n", msg->len, msg->msg);
|
|
|
|
|
|
|
|
/* Check if this message was for us (directed or broadcast). */
|
|
|
|
if (!cec_msg_is_broadcast(msg))
|
|
|
|
valid_la = cec_has_log_addr(adap, msg_dest);
|
|
|
|
|
2016-11-01 06:48:22 -06:00
|
|
|
/*
|
|
|
|
* Check if the length is not too short or if the message is a
|
|
|
|
* broadcast message where a directed message was expected or
|
|
|
|
* vice versa. If so, then the message has to be ignored (according
|
|
|
|
* to section CEC 7.3 and CEC 12.2).
|
|
|
|
*/
|
|
|
|
if (valid_la && msg->len > 1 && cec_msg_size[cmd]) {
|
|
|
|
u8 dir_fl = cec_msg_size[cmd] & BOTH;
|
|
|
|
|
|
|
|
min_len = cec_msg_size[cmd] & 0x1f;
|
|
|
|
if (msg->len < min_len)
|
|
|
|
valid_la = false;
|
|
|
|
else if (!cec_msg_is_broadcast(msg) && !(dir_fl & DIRECTED))
|
|
|
|
valid_la = false;
|
|
|
|
else if (cec_msg_is_broadcast(msg) && !(dir_fl & BCAST1_4))
|
|
|
|
valid_la = false;
|
|
|
|
else if (cec_msg_is_broadcast(msg) &&
|
|
|
|
adap->log_addrs.cec_version >= CEC_OP_CEC_VERSION_2_0 &&
|
|
|
|
!(dir_fl & BCAST2_0))
|
|
|
|
valid_la = false;
|
|
|
|
}
|
|
|
|
if (valid_la && min_len) {
|
|
|
|
/* These messages have special length requirements */
|
|
|
|
switch (cmd) {
|
|
|
|
case CEC_MSG_TIMER_STATUS:
|
|
|
|
if (msg->msg[2] & 0x10) {
|
|
|
|
switch (msg->msg[2] & 0xf) {
|
|
|
|
case CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE:
|
|
|
|
case CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE:
|
|
|
|
if (msg->len < 5)
|
|
|
|
valid_la = false;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} else if ((msg->msg[2] & 0xf) == CEC_OP_PROG_ERROR_DUPLICATE) {
|
|
|
|
if (msg->len < 5)
|
|
|
|
valid_la = false;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case CEC_MSG_RECORD_ON:
|
|
|
|
switch (msg->msg[2]) {
|
|
|
|
case CEC_OP_RECORD_SRC_OWN:
|
|
|
|
break;
|
|
|
|
case CEC_OP_RECORD_SRC_DIGITAL:
|
|
|
|
if (msg->len < 10)
|
|
|
|
valid_la = false;
|
|
|
|
break;
|
|
|
|
case CEC_OP_RECORD_SRC_ANALOG:
|
|
|
|
if (msg->len < 7)
|
|
|
|
valid_la = false;
|
|
|
|
break;
|
|
|
|
case CEC_OP_RECORD_SRC_EXT_PLUG:
|
|
|
|
if (msg->len < 4)
|
|
|
|
valid_la = false;
|
|
|
|
break;
|
|
|
|
case CEC_OP_RECORD_SRC_EXT_PHYS_ADDR:
|
|
|
|
if (msg->len < 5)
|
|
|
|
valid_la = false;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
/* It's a valid message and not a poll or CDC message */
|
2016-11-01 06:48:22 -06:00
|
|
|
if (valid_la && msg->len > 1 && cmd != CEC_MSG_CDC_MESSAGE) {
|
2016-06-25 06:44:16 -06:00
|
|
|
bool abort = cmd == CEC_MSG_FEATURE_ABORT;
|
|
|
|
|
|
|
|
/* The aborted command is in msg[2] */
|
|
|
|
if (abort)
|
|
|
|
cmd = msg->msg[2];
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Walk over all transmitted messages that are waiting for a
|
|
|
|
* reply.
|
|
|
|
*/
|
|
|
|
list_for_each_entry(data, &adap->wait_queue, list) {
|
|
|
|
struct cec_msg *dst = &data->msg;
|
|
|
|
|
2016-11-01 07:07:17 -06:00
|
|
|
/*
|
|
|
|
* The *only* CEC message that has two possible replies
|
|
|
|
* is CEC_MSG_INITIATE_ARC.
|
|
|
|
* In this case allow either of the two replies.
|
|
|
|
*/
|
|
|
|
if (!abort && dst->msg[1] == CEC_MSG_INITIATE_ARC &&
|
|
|
|
(cmd == CEC_MSG_REPORT_ARC_INITIATED ||
|
|
|
|
cmd == CEC_MSG_REPORT_ARC_TERMINATED) &&
|
|
|
|
(dst->reply == CEC_MSG_REPORT_ARC_INITIATED ||
|
|
|
|
dst->reply == CEC_MSG_REPORT_ARC_TERMINATED))
|
|
|
|
dst->reply = cmd;
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
/* Does the command match? */
|
|
|
|
if ((abort && cmd != dst->msg[1]) ||
|
|
|
|
(!abort && cmd != dst->reply))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* Does the addressing match? */
|
|
|
|
if (msg_init != cec_msg_destination(dst) &&
|
|
|
|
!cec_msg_is_broadcast(dst))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* We got a reply */
|
2016-07-12 08:10:42 -06:00
|
|
|
memcpy(dst->msg, msg->msg, msg->len);
|
|
|
|
dst->len = msg->len;
|
|
|
|
dst->rx_ts = msg->rx_ts;
|
|
|
|
dst->rx_status = msg->rx_status;
|
2016-07-13 01:33:58 -06:00
|
|
|
if (abort)
|
2016-06-25 06:44:16 -06:00
|
|
|
dst->rx_status |= CEC_RX_STATUS_FEATURE_ABORT;
|
2016-11-01 04:55:05 -06:00
|
|
|
msg->flags = dst->flags;
|
2016-06-25 06:44:16 -06:00
|
|
|
/* Remove it from the wait_queue */
|
|
|
|
list_del_init(&data->list);
|
|
|
|
|
|
|
|
/* Cancel the pending timeout work */
|
|
|
|
if (!cancel_delayed_work(&data->work)) {
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
flush_scheduled_work();
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Mark this as a reply, provided someone is still
|
|
|
|
* waiting for the answer.
|
|
|
|
*/
|
|
|
|
if (data->fh)
|
|
|
|
is_reply = true;
|
|
|
|
cec_data_completed(data);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
|
|
|
|
/* Pass the message on to any monitoring filehandles */
|
|
|
|
cec_queue_msg_monitor(adap, msg, valid_la);
|
|
|
|
|
|
|
|
/* We're done if it is not for us or a poll message */
|
|
|
|
if (!valid_la || msg->len <= 1)
|
|
|
|
return;
|
|
|
|
|
2016-08-12 10:32:07 -06:00
|
|
|
if (adap->log_addrs.log_addr_mask == 0)
|
|
|
|
return;
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
/*
|
|
|
|
* Process the message on the protocol level. If is_reply is true,
|
|
|
|
* then cec_receive_notify() won't pass on the reply to the listener(s)
|
|
|
|
* since that was already done by cec_data_completed() above.
|
|
|
|
*/
|
|
|
|
cec_receive_notify(adap, msg, is_reply);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(cec_received_msg);
|
|
|
|
|
|
|
|
/* Logical Address Handling */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Attempt to claim a specific logical address.
|
|
|
|
*
|
|
|
|
* This function is called with adap->lock held.
|
|
|
|
*/
|
|
|
|
static int cec_config_log_addr(struct cec_adapter *adap,
|
|
|
|
unsigned int idx,
|
|
|
|
unsigned int log_addr)
|
|
|
|
{
|
|
|
|
struct cec_log_addrs *las = &adap->log_addrs;
|
|
|
|
struct cec_msg msg = { };
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (cec_has_log_addr(adap, log_addr))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* Send poll message */
|
|
|
|
msg.len = 1;
|
2017-02-11 04:24:46 -07:00
|
|
|
msg.msg[0] = (log_addr << 4) | log_addr;
|
2016-06-25 06:44:16 -06:00
|
|
|
err = cec_transmit_msg_fh(adap, &msg, NULL, true);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* While trying to poll the physical address was reset
|
|
|
|
* and the adapter was unconfigured, so bail out.
|
|
|
|
*/
|
|
|
|
if (!adap->is_configuring)
|
|
|
|
return -EINTR;
|
|
|
|
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
if (msg.tx_status & CEC_TX_STATUS_OK)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Message not acknowledged, so this logical
|
|
|
|
* address is free to use.
|
|
|
|
*/
|
|
|
|
err = adap->ops->adap_log_addr(adap, log_addr);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
las->log_addr[idx] = log_addr;
|
|
|
|
las->log_addr_mask |= 1 << log_addr;
|
|
|
|
adap->phys_addrs[log_addr] = adap->phys_addr;
|
|
|
|
|
|
|
|
dprintk(2, "claimed addr %d (%d)\n", log_addr,
|
|
|
|
las->primary_device_type[idx]);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Unconfigure the adapter: clear all logical addresses and send
|
|
|
|
* the state changed event.
|
|
|
|
*
|
|
|
|
* This function is called with adap->lock held.
|
|
|
|
*/
|
|
|
|
static void cec_adap_unconfigure(struct cec_adapter *adap)
|
|
|
|
{
|
|
|
|
WARN_ON(adap->ops->adap_log_addr(adap, CEC_LOG_ADDR_INVALID));
|
|
|
|
adap->log_addrs.log_addr_mask = 0;
|
|
|
|
adap->is_configuring = false;
|
|
|
|
adap->is_configured = false;
|
|
|
|
memset(adap->phys_addrs, 0xff, sizeof(adap->phys_addrs));
|
|
|
|
wake_up_interruptible(&adap->kthread_waitq);
|
|
|
|
cec_post_state_event(adap);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Attempt to claim the required logical addresses.
|
|
|
|
*/
|
|
|
|
static int cec_config_thread_func(void *arg)
|
|
|
|
{
|
|
|
|
/* The various LAs for each type of device */
|
|
|
|
static const u8 tv_log_addrs[] = {
|
|
|
|
CEC_LOG_ADDR_TV, CEC_LOG_ADDR_SPECIFIC,
|
|
|
|
CEC_LOG_ADDR_INVALID
|
|
|
|
};
|
|
|
|
static const u8 record_log_addrs[] = {
|
|
|
|
CEC_LOG_ADDR_RECORD_1, CEC_LOG_ADDR_RECORD_2,
|
|
|
|
CEC_LOG_ADDR_RECORD_3,
|
|
|
|
CEC_LOG_ADDR_BACKUP_1, CEC_LOG_ADDR_BACKUP_2,
|
|
|
|
CEC_LOG_ADDR_INVALID
|
|
|
|
};
|
|
|
|
static const u8 tuner_log_addrs[] = {
|
|
|
|
CEC_LOG_ADDR_TUNER_1, CEC_LOG_ADDR_TUNER_2,
|
|
|
|
CEC_LOG_ADDR_TUNER_3, CEC_LOG_ADDR_TUNER_4,
|
|
|
|
CEC_LOG_ADDR_BACKUP_1, CEC_LOG_ADDR_BACKUP_2,
|
|
|
|
CEC_LOG_ADDR_INVALID
|
|
|
|
};
|
|
|
|
static const u8 playback_log_addrs[] = {
|
|
|
|
CEC_LOG_ADDR_PLAYBACK_1, CEC_LOG_ADDR_PLAYBACK_2,
|
|
|
|
CEC_LOG_ADDR_PLAYBACK_3,
|
|
|
|
CEC_LOG_ADDR_BACKUP_1, CEC_LOG_ADDR_BACKUP_2,
|
|
|
|
CEC_LOG_ADDR_INVALID
|
|
|
|
};
|
|
|
|
static const u8 audiosystem_log_addrs[] = {
|
|
|
|
CEC_LOG_ADDR_AUDIOSYSTEM,
|
|
|
|
CEC_LOG_ADDR_INVALID
|
|
|
|
};
|
|
|
|
static const u8 specific_use_log_addrs[] = {
|
|
|
|
CEC_LOG_ADDR_SPECIFIC,
|
|
|
|
CEC_LOG_ADDR_BACKUP_1, CEC_LOG_ADDR_BACKUP_2,
|
|
|
|
CEC_LOG_ADDR_INVALID
|
|
|
|
};
|
|
|
|
static const u8 *type2addrs[6] = {
|
|
|
|
[CEC_LOG_ADDR_TYPE_TV] = tv_log_addrs,
|
|
|
|
[CEC_LOG_ADDR_TYPE_RECORD] = record_log_addrs,
|
|
|
|
[CEC_LOG_ADDR_TYPE_TUNER] = tuner_log_addrs,
|
|
|
|
[CEC_LOG_ADDR_TYPE_PLAYBACK] = playback_log_addrs,
|
|
|
|
[CEC_LOG_ADDR_TYPE_AUDIOSYSTEM] = audiosystem_log_addrs,
|
|
|
|
[CEC_LOG_ADDR_TYPE_SPECIFIC] = specific_use_log_addrs,
|
|
|
|
};
|
|
|
|
static const u16 type2mask[] = {
|
|
|
|
[CEC_LOG_ADDR_TYPE_TV] = CEC_LOG_ADDR_MASK_TV,
|
|
|
|
[CEC_LOG_ADDR_TYPE_RECORD] = CEC_LOG_ADDR_MASK_RECORD,
|
|
|
|
[CEC_LOG_ADDR_TYPE_TUNER] = CEC_LOG_ADDR_MASK_TUNER,
|
|
|
|
[CEC_LOG_ADDR_TYPE_PLAYBACK] = CEC_LOG_ADDR_MASK_PLAYBACK,
|
|
|
|
[CEC_LOG_ADDR_TYPE_AUDIOSYSTEM] = CEC_LOG_ADDR_MASK_AUDIOSYSTEM,
|
|
|
|
[CEC_LOG_ADDR_TYPE_SPECIFIC] = CEC_LOG_ADDR_MASK_SPECIFIC,
|
|
|
|
};
|
|
|
|
struct cec_adapter *adap = arg;
|
|
|
|
struct cec_log_addrs *las = &adap->log_addrs;
|
|
|
|
int err;
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
dprintk(1, "physical address: %x.%x.%x.%x, claim %d logical addresses\n",
|
|
|
|
cec_phys_addr_exp(adap->phys_addr), las->num_log_addrs);
|
|
|
|
las->log_addr_mask = 0;
|
|
|
|
|
|
|
|
if (las->log_addr_type[0] == CEC_LOG_ADDR_TYPE_UNREGISTERED)
|
|
|
|
goto configured;
|
|
|
|
|
|
|
|
for (i = 0; i < las->num_log_addrs; i++) {
|
|
|
|
unsigned int type = las->log_addr_type[i];
|
|
|
|
const u8 *la_list;
|
|
|
|
u8 last_la;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The TV functionality can only map to physical address 0.
|
|
|
|
* For any other address, try the Specific functionality
|
|
|
|
* instead as per the spec.
|
|
|
|
*/
|
|
|
|
if (adap->phys_addr && type == CEC_LOG_ADDR_TYPE_TV)
|
|
|
|
type = CEC_LOG_ADDR_TYPE_SPECIFIC;
|
|
|
|
|
|
|
|
la_list = type2addrs[type];
|
|
|
|
last_la = las->log_addr[i];
|
|
|
|
las->log_addr[i] = CEC_LOG_ADDR_INVALID;
|
|
|
|
if (last_la == CEC_LOG_ADDR_INVALID ||
|
|
|
|
last_la == CEC_LOG_ADDR_UNREGISTERED ||
|
2017-01-10 04:44:54 -07:00
|
|
|
!((1 << last_la) & type2mask[type]))
|
2016-06-25 06:44:16 -06:00
|
|
|
last_la = la_list[0];
|
|
|
|
|
|
|
|
err = cec_config_log_addr(adap, i, last_la);
|
|
|
|
if (err > 0) /* Reused last LA */
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (err < 0)
|
|
|
|
goto unconfigure;
|
|
|
|
|
|
|
|
for (j = 0; la_list[j] != CEC_LOG_ADDR_INVALID; j++) {
|
|
|
|
/* Tried this one already, skip it */
|
|
|
|
if (la_list[j] == last_la)
|
|
|
|
continue;
|
|
|
|
/* The backup addresses are CEC 2.0 specific */
|
|
|
|
if ((la_list[j] == CEC_LOG_ADDR_BACKUP_1 ||
|
|
|
|
la_list[j] == CEC_LOG_ADDR_BACKUP_2) &&
|
|
|
|
las->cec_version < CEC_OP_CEC_VERSION_2_0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
err = cec_config_log_addr(adap, i, la_list[j]);
|
|
|
|
if (err == 0) /* LA is in use */
|
|
|
|
continue;
|
|
|
|
if (err < 0)
|
|
|
|
goto unconfigure;
|
|
|
|
/* Done, claimed an LA */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (la_list[j] == CEC_LOG_ADDR_INVALID)
|
|
|
|
dprintk(1, "could not claim LA %d\n", i);
|
|
|
|
}
|
|
|
|
|
2016-08-10 06:24:45 -06:00
|
|
|
if (adap->log_addrs.log_addr_mask == 0 &&
|
|
|
|
!(las->flags & CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK))
|
|
|
|
goto unconfigure;
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
configured:
|
|
|
|
if (adap->log_addrs.log_addr_mask == 0) {
|
|
|
|
/* Fall back to unregistered */
|
|
|
|
las->log_addr[0] = CEC_LOG_ADDR_UNREGISTERED;
|
|
|
|
las->log_addr_mask = 1 << las->log_addr[0];
|
2016-08-14 05:27:09 -06:00
|
|
|
for (i = 1; i < las->num_log_addrs; i++)
|
|
|
|
las->log_addr[i] = CEC_LOG_ADDR_INVALID;
|
2016-06-25 06:44:16 -06:00
|
|
|
}
|
2016-12-09 06:54:06 -07:00
|
|
|
for (i = las->num_log_addrs; i < CEC_MAX_LOG_ADDRS; i++)
|
|
|
|
las->log_addr[i] = CEC_LOG_ADDR_INVALID;
|
2016-06-25 06:44:16 -06:00
|
|
|
adap->is_configured = true;
|
|
|
|
adap->is_configuring = false;
|
|
|
|
cec_post_state_event(adap);
|
|
|
|
|
2016-12-09 07:00:49 -07:00
|
|
|
/*
|
|
|
|
* Now post the Report Features and Report Physical Address broadcast
|
|
|
|
* messages. Note that these are non-blocking transmits, meaning that
|
|
|
|
* they are just queued up and once adap->lock is unlocked the main
|
|
|
|
* thread will kick in and start transmitting these.
|
|
|
|
*
|
|
|
|
* If after this function is done (but before one or more of these
|
|
|
|
* messages are actually transmitted) the CEC adapter is unconfigured,
|
|
|
|
* then any remaining messages will be dropped by the main thread.
|
|
|
|
*/
|
2016-06-25 06:44:16 -06:00
|
|
|
for (i = 0; i < las->num_log_addrs; i++) {
|
2016-12-09 06:36:03 -07:00
|
|
|
struct cec_msg msg = {};
|
|
|
|
|
2016-11-02 03:41:41 -06:00
|
|
|
if (las->log_addr[i] == CEC_LOG_ADDR_INVALID ||
|
|
|
|
(las->flags & CEC_LOG_ADDRS_FL_CDC_ONLY))
|
2016-06-25 06:44:16 -06:00
|
|
|
continue;
|
|
|
|
|
2016-12-09 06:36:03 -07:00
|
|
|
msg.msg[0] = (las->log_addr[i] << 4) | 0x0f;
|
|
|
|
|
|
|
|
/* Report Features must come first according to CEC 2.0 */
|
|
|
|
if (las->log_addr[i] != CEC_LOG_ADDR_UNREGISTERED &&
|
|
|
|
adap->log_addrs.cec_version >= CEC_OP_CEC_VERSION_2_0) {
|
|
|
|
cec_fill_msg_report_features(adap, &msg, i);
|
2016-12-09 07:00:49 -07:00
|
|
|
cec_transmit_msg_fh(adap, &msg, NULL, false);
|
2016-12-09 06:36:03 -07:00
|
|
|
}
|
|
|
|
|
2016-12-09 06:48:34 -07:00
|
|
|
/* Report Physical Address */
|
|
|
|
cec_msg_report_physical_addr(&msg, adap->phys_addr,
|
|
|
|
las->primary_device_type[i]);
|
|
|
|
dprintk(2, "config: la %d pa %x.%x.%x.%x\n",
|
|
|
|
las->log_addr[i],
|
|
|
|
cec_phys_addr_exp(adap->phys_addr));
|
2016-12-09 07:00:49 -07:00
|
|
|
cec_transmit_msg_fh(adap, &msg, NULL, false);
|
2016-06-25 06:44:16 -06:00
|
|
|
}
|
|
|
|
adap->kthread_config = NULL;
|
|
|
|
complete(&adap->config_completion);
|
2016-12-09 07:00:49 -07:00
|
|
|
mutex_unlock(&adap->lock);
|
2016-06-25 06:44:16 -06:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
unconfigure:
|
|
|
|
for (i = 0; i < las->num_log_addrs; i++)
|
|
|
|
las->log_addr[i] = CEC_LOG_ADDR_INVALID;
|
|
|
|
cec_adap_unconfigure(adap);
|
|
|
|
adap->kthread_config = NULL;
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
complete(&adap->config_completion);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Called from either __cec_s_phys_addr or __cec_s_log_addrs to claim the
|
|
|
|
* logical addresses.
|
|
|
|
*
|
|
|
|
* This function is called with adap->lock held.
|
|
|
|
*/
|
|
|
|
static void cec_claim_log_addrs(struct cec_adapter *adap, bool block)
|
|
|
|
{
|
|
|
|
if (WARN_ON(adap->is_configuring || adap->is_configured))
|
|
|
|
return;
|
|
|
|
|
|
|
|
init_completion(&adap->config_completion);
|
|
|
|
|
|
|
|
/* Ready to kick off the thread */
|
|
|
|
adap->is_configuring = true;
|
|
|
|
adap->kthread_config = kthread_run(cec_config_thread_func, adap,
|
|
|
|
"ceccfg-%s", adap->name);
|
|
|
|
if (IS_ERR(adap->kthread_config)) {
|
|
|
|
adap->kthread_config = NULL;
|
|
|
|
} else if (block) {
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
wait_for_completion(&adap->config_completion);
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set a new physical address and send an event notifying userspace of this.
|
|
|
|
*
|
|
|
|
* This function is called with adap->lock held.
|
|
|
|
*/
|
|
|
|
void __cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block)
|
|
|
|
{
|
2016-07-10 07:11:17 -06:00
|
|
|
if (phys_addr == adap->phys_addr || adap->devnode.unregistered)
|
2016-06-25 06:44:16 -06:00
|
|
|
return;
|
|
|
|
|
|
|
|
if (phys_addr == CEC_PHYS_ADDR_INVALID ||
|
|
|
|
adap->phys_addr != CEC_PHYS_ADDR_INVALID) {
|
|
|
|
adap->phys_addr = CEC_PHYS_ADDR_INVALID;
|
|
|
|
cec_post_state_event(adap);
|
|
|
|
cec_adap_unconfigure(adap);
|
|
|
|
/* Disabling monitor all mode should always succeed */
|
|
|
|
if (adap->monitor_all_cnt)
|
|
|
|
WARN_ON(call_op(adap, adap_monitor_all_enable, false));
|
|
|
|
WARN_ON(adap->ops->adap_enable(adap, false));
|
|
|
|
if (phys_addr == CEC_PHYS_ADDR_INVALID)
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (adap->ops->adap_enable(adap, true))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (adap->monitor_all_cnt &&
|
|
|
|
call_op(adap, adap_monitor_all_enable, true)) {
|
|
|
|
WARN_ON(adap->ops->adap_enable(adap, false));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
adap->phys_addr = phys_addr;
|
|
|
|
cec_post_state_event(adap);
|
|
|
|
if (adap->log_addrs.num_log_addrs)
|
|
|
|
cec_claim_log_addrs(adap, block);
|
|
|
|
}
|
|
|
|
|
|
|
|
void cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block)
|
|
|
|
{
|
|
|
|
if (IS_ERR_OR_NULL(adap))
|
|
|
|
return;
|
|
|
|
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
__cec_s_phys_addr(adap, phys_addr, block);
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(cec_s_phys_addr);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Called from either the ioctl or a driver to set the logical addresses.
|
|
|
|
*
|
|
|
|
* This function is called with adap->lock held.
|
|
|
|
*/
|
|
|
|
int __cec_s_log_addrs(struct cec_adapter *adap,
|
|
|
|
struct cec_log_addrs *log_addrs, bool block)
|
|
|
|
{
|
|
|
|
u16 type_mask = 0;
|
|
|
|
int i;
|
|
|
|
|
2016-07-10 07:11:17 -06:00
|
|
|
if (adap->devnode.unregistered)
|
|
|
|
return -ENODEV;
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
if (!log_addrs || log_addrs->num_log_addrs == 0) {
|
|
|
|
adap->log_addrs.num_log_addrs = 0;
|
|
|
|
cec_adap_unconfigure(adap);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2016-11-02 03:41:41 -06:00
|
|
|
if (log_addrs->flags & CEC_LOG_ADDRS_FL_CDC_ONLY) {
|
|
|
|
/*
|
|
|
|
* Sanitize log_addrs fields if a CDC-Only device is
|
|
|
|
* requested.
|
|
|
|
*/
|
|
|
|
log_addrs->num_log_addrs = 1;
|
|
|
|
log_addrs->osd_name[0] = '\0';
|
|
|
|
log_addrs->vendor_id = CEC_VENDOR_ID_NONE;
|
|
|
|
log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_UNREGISTERED;
|
|
|
|
/*
|
|
|
|
* This is just an internal convention since a CDC-Only device
|
|
|
|
* doesn't have to be a switch. But switches already use
|
|
|
|
* unregistered, so it makes some kind of sense to pick this
|
|
|
|
* as the primary device. Since a CDC-Only device never sends
|
|
|
|
* any 'normal' CEC messages this primary device type is never
|
|
|
|
* sent over the CEC bus.
|
|
|
|
*/
|
|
|
|
log_addrs->primary_device_type[0] = CEC_OP_PRIM_DEVTYPE_SWITCH;
|
|
|
|
log_addrs->all_device_types[0] = 0;
|
|
|
|
log_addrs->features[0][0] = 0;
|
|
|
|
log_addrs->features[0][1] = 0;
|
|
|
|
}
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
/* Ensure the osd name is 0-terminated */
|
|
|
|
log_addrs->osd_name[sizeof(log_addrs->osd_name) - 1] = '\0';
|
|
|
|
|
|
|
|
/* Sanity checks */
|
|
|
|
if (log_addrs->num_log_addrs > adap->available_log_addrs) {
|
|
|
|
dprintk(1, "num_log_addrs > %d\n", adap->available_log_addrs);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Vendor ID is a 24 bit number, so check if the value is
|
|
|
|
* within the correct range.
|
|
|
|
*/
|
|
|
|
if (log_addrs->vendor_id != CEC_VENDOR_ID_NONE &&
|
|
|
|
(log_addrs->vendor_id & 0xff000000) != 0)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (log_addrs->cec_version != CEC_OP_CEC_VERSION_1_4 &&
|
|
|
|
log_addrs->cec_version != CEC_OP_CEC_VERSION_2_0)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (log_addrs->num_log_addrs > 1)
|
|
|
|
for (i = 0; i < log_addrs->num_log_addrs; i++)
|
|
|
|
if (log_addrs->log_addr_type[i] ==
|
|
|
|
CEC_LOG_ADDR_TYPE_UNREGISTERED) {
|
|
|
|
dprintk(1, "num_log_addrs > 1 can't be combined with unregistered LA\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < log_addrs->num_log_addrs; i++) {
|
2016-07-18 00:44:10 -06:00
|
|
|
const u8 feature_sz = ARRAY_SIZE(log_addrs->features[0]);
|
2016-06-25 06:44:16 -06:00
|
|
|
u8 *features = log_addrs->features[i];
|
|
|
|
bool op_is_dev_features = false;
|
2016-11-04 06:52:10 -06:00
|
|
|
unsigned j;
|
2016-06-25 06:44:16 -06:00
|
|
|
|
|
|
|
log_addrs->log_addr[i] = CEC_LOG_ADDR_INVALID;
|
|
|
|
if (type_mask & (1 << log_addrs->log_addr_type[i])) {
|
|
|
|
dprintk(1, "duplicate logical address type\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
type_mask |= 1 << log_addrs->log_addr_type[i];
|
|
|
|
if ((type_mask & (1 << CEC_LOG_ADDR_TYPE_RECORD)) &&
|
|
|
|
(type_mask & (1 << CEC_LOG_ADDR_TYPE_PLAYBACK))) {
|
|
|
|
/* Record already contains the playback functionality */
|
|
|
|
dprintk(1, "invalid record + playback combination\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (log_addrs->primary_device_type[i] >
|
|
|
|
CEC_OP_PRIM_DEVTYPE_PROCESSOR) {
|
|
|
|
dprintk(1, "unknown primary device type\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (log_addrs->primary_device_type[i] == 2) {
|
|
|
|
dprintk(1, "invalid primary device type\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (log_addrs->log_addr_type[i] > CEC_LOG_ADDR_TYPE_UNREGISTERED) {
|
|
|
|
dprintk(1, "unknown logical address type\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2016-11-04 06:52:10 -06:00
|
|
|
for (j = 0; j < feature_sz; j++) {
|
|
|
|
if ((features[j] & 0x80) == 0) {
|
2016-06-25 06:44:16 -06:00
|
|
|
if (op_is_dev_features)
|
|
|
|
break;
|
|
|
|
op_is_dev_features = true;
|
|
|
|
}
|
|
|
|
}
|
2016-11-04 06:52:10 -06:00
|
|
|
if (!op_is_dev_features || j == feature_sz) {
|
2016-06-25 06:44:16 -06:00
|
|
|
dprintk(1, "malformed features\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2016-07-18 00:44:10 -06:00
|
|
|
/* Zero unused part of the feature array */
|
2016-11-04 06:52:10 -06:00
|
|
|
memset(features + j + 1, 0, feature_sz - j - 1);
|
2016-06-25 06:44:16 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
if (log_addrs->cec_version >= CEC_OP_CEC_VERSION_2_0) {
|
|
|
|
if (log_addrs->num_log_addrs > 2) {
|
|
|
|
dprintk(1, "CEC 2.0 allows no more than 2 logical addresses\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (log_addrs->num_log_addrs == 2) {
|
|
|
|
if (!(type_mask & ((1 << CEC_LOG_ADDR_TYPE_AUDIOSYSTEM) |
|
|
|
|
(1 << CEC_LOG_ADDR_TYPE_TV)))) {
|
|
|
|
dprintk(1, "Two LAs is only allowed for audiosystem and TV\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (!(type_mask & ((1 << CEC_LOG_ADDR_TYPE_PLAYBACK) |
|
|
|
|
(1 << CEC_LOG_ADDR_TYPE_RECORD)))) {
|
|
|
|
dprintk(1, "An audiosystem/TV can only be combined with record or playback\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-07-18 00:44:10 -06:00
|
|
|
/* Zero unused LAs */
|
|
|
|
for (i = log_addrs->num_log_addrs; i < CEC_MAX_LOG_ADDRS; i++) {
|
|
|
|
log_addrs->primary_device_type[i] = 0;
|
|
|
|
log_addrs->log_addr_type[i] = 0;
|
|
|
|
log_addrs->all_device_types[i] = 0;
|
|
|
|
memset(log_addrs->features[i], 0,
|
|
|
|
sizeof(log_addrs->features[i]));
|
|
|
|
}
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
log_addrs->log_addr_mask = adap->log_addrs.log_addr_mask;
|
|
|
|
adap->log_addrs = *log_addrs;
|
|
|
|
if (adap->phys_addr != CEC_PHYS_ADDR_INVALID)
|
|
|
|
cec_claim_log_addrs(adap, block);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int cec_s_log_addrs(struct cec_adapter *adap,
|
|
|
|
struct cec_log_addrs *log_addrs, bool block)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
err = __cec_s_log_addrs(adap, log_addrs, block);
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(cec_s_log_addrs);
|
|
|
|
|
|
|
|
/* High-level core CEC message handling */
|
|
|
|
|
2016-12-09 06:36:03 -07:00
|
|
|
/* Fill in the Report Features message */
|
|
|
|
static void cec_fill_msg_report_features(struct cec_adapter *adap,
|
|
|
|
struct cec_msg *msg,
|
|
|
|
unsigned int la_idx)
|
2016-06-25 06:44:16 -06:00
|
|
|
{
|
|
|
|
const struct cec_log_addrs *las = &adap->log_addrs;
|
|
|
|
const u8 *features = las->features[la_idx];
|
|
|
|
bool op_is_dev_features = false;
|
|
|
|
unsigned int idx;
|
|
|
|
|
|
|
|
/* Report Features */
|
2016-12-09 06:36:03 -07:00
|
|
|
msg->msg[0] = (las->log_addr[la_idx] << 4) | 0x0f;
|
|
|
|
msg->len = 4;
|
|
|
|
msg->msg[1] = CEC_MSG_REPORT_FEATURES;
|
|
|
|
msg->msg[2] = adap->log_addrs.cec_version;
|
|
|
|
msg->msg[3] = las->all_device_types[la_idx];
|
2016-06-25 06:44:16 -06:00
|
|
|
|
|
|
|
/* Write RC Profiles first, then Device Features */
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(las->features[0]); idx++) {
|
2016-12-09 06:36:03 -07:00
|
|
|
msg->msg[msg->len++] = features[idx];
|
2016-06-25 06:44:16 -06:00
|
|
|
if ((features[idx] & CEC_OP_FEAT_EXT) == 0) {
|
|
|
|
if (op_is_dev_features)
|
|
|
|
break;
|
|
|
|
op_is_dev_features = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Transmit the Feature Abort message */
|
|
|
|
static int cec_feature_abort_reason(struct cec_adapter *adap,
|
|
|
|
struct cec_msg *msg, u8 reason)
|
|
|
|
{
|
|
|
|
struct cec_msg tx_msg = { };
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Don't reply with CEC_MSG_FEATURE_ABORT to a CEC_MSG_FEATURE_ABORT
|
|
|
|
* message!
|
|
|
|
*/
|
|
|
|
if (msg->msg[1] == CEC_MSG_FEATURE_ABORT)
|
|
|
|
return 0;
|
|
|
|
cec_msg_set_reply_to(&tx_msg, msg);
|
|
|
|
cec_msg_feature_abort(&tx_msg, msg->msg[1], reason);
|
|
|
|
return cec_transmit_msg(adap, &tx_msg, false);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cec_feature_abort(struct cec_adapter *adap, struct cec_msg *msg)
|
|
|
|
{
|
|
|
|
return cec_feature_abort_reason(adap, msg,
|
|
|
|
CEC_OP_ABORT_UNRECOGNIZED_OP);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cec_feature_refused(struct cec_adapter *adap, struct cec_msg *msg)
|
|
|
|
{
|
|
|
|
return cec_feature_abort_reason(adap, msg,
|
|
|
|
CEC_OP_ABORT_REFUSED);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Called when a CEC message is received. This function will do any
|
|
|
|
* necessary core processing. The is_reply bool is true if this message
|
|
|
|
* is a reply to an earlier transmit.
|
|
|
|
*
|
|
|
|
* The message is either a broadcast message or a valid directed message.
|
|
|
|
*/
|
|
|
|
static int cec_receive_notify(struct cec_adapter *adap, struct cec_msg *msg,
|
|
|
|
bool is_reply)
|
|
|
|
{
|
|
|
|
bool is_broadcast = cec_msg_is_broadcast(msg);
|
|
|
|
u8 dest_laddr = cec_msg_destination(msg);
|
|
|
|
u8 init_laddr = cec_msg_initiator(msg);
|
|
|
|
u8 devtype = cec_log_addr2dev(adap, dest_laddr);
|
|
|
|
int la_idx = cec_log_addr2idx(adap, dest_laddr);
|
|
|
|
bool from_unregistered = init_laddr == 0xf;
|
|
|
|
struct cec_msg tx_cec_msg = { };
|
|
|
|
|
|
|
|
dprintk(1, "cec_receive_notify: %*ph\n", msg->len, msg->msg);
|
|
|
|
|
2016-11-02 03:41:41 -06:00
|
|
|
/* If this is a CDC-Only device, then ignore any non-CDC messages */
|
|
|
|
if (cec_is_cdc_only(&adap->log_addrs) &&
|
|
|
|
msg->msg[1] != CEC_MSG_CDC_MESSAGE)
|
|
|
|
return 0;
|
|
|
|
|
2016-06-25 06:44:16 -06:00
|
|
|
if (adap->ops->received) {
|
|
|
|
/* Allow drivers to process the message first */
|
|
|
|
if (adap->ops->received(adap, msg) != -ENOMSG)
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* REPORT_PHYSICAL_ADDR, CEC_MSG_USER_CONTROL_PRESSED and
|
|
|
|
* CEC_MSG_USER_CONTROL_RELEASED messages always have to be
|
|
|
|
* handled by the CEC core, even if the passthrough mode is on.
|
|
|
|
* The others are just ignored if passthrough mode is on.
|
|
|
|
*/
|
|
|
|
switch (msg->msg[1]) {
|
|
|
|
case CEC_MSG_GET_CEC_VERSION:
|
|
|
|
case CEC_MSG_GIVE_DEVICE_VENDOR_ID:
|
|
|
|
case CEC_MSG_ABORT:
|
|
|
|
case CEC_MSG_GIVE_DEVICE_POWER_STATUS:
|
|
|
|
case CEC_MSG_GIVE_PHYSICAL_ADDR:
|
|
|
|
case CEC_MSG_GIVE_OSD_NAME:
|
|
|
|
case CEC_MSG_GIVE_FEATURES:
|
|
|
|
/*
|
|
|
|
* Skip processing these messages if the passthrough mode
|
|
|
|
* is on.
|
|
|
|
*/
|
|
|
|
if (adap->passthrough)
|
|
|
|
goto skip_processing;
|
|
|
|
/* Ignore if addressing is wrong */
|
|
|
|
if (is_broadcast || from_unregistered)
|
|
|
|
return 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CEC_MSG_USER_CONTROL_PRESSED:
|
|
|
|
case CEC_MSG_USER_CONTROL_RELEASED:
|
|
|
|
/* Wrong addressing mode: don't process */
|
|
|
|
if (is_broadcast || from_unregistered)
|
|
|
|
goto skip_processing;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CEC_MSG_REPORT_PHYSICAL_ADDR:
|
|
|
|
/*
|
|
|
|
* This message is always processed, regardless of the
|
|
|
|
* passthrough setting.
|
|
|
|
*
|
|
|
|
* Exception: don't process if wrong addressing mode.
|
|
|
|
*/
|
|
|
|
if (!is_broadcast)
|
|
|
|
goto skip_processing;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
cec_msg_set_reply_to(&tx_cec_msg, msg);
|
|
|
|
|
|
|
|
switch (msg->msg[1]) {
|
|
|
|
/* The following messages are processed but still passed through */
|
2016-06-30 04:08:53 -06:00
|
|
|
case CEC_MSG_REPORT_PHYSICAL_ADDR: {
|
|
|
|
u16 pa = (msg->msg[2] << 8) | msg->msg[3];
|
|
|
|
|
|
|
|
if (!from_unregistered)
|
|
|
|
adap->phys_addrs[init_laddr] = pa;
|
|
|
|
dprintk(1, "Reported physical address %x.%x.%x.%x for logical address %d\n",
|
|
|
|
cec_phys_addr_exp(pa), init_laddr);
|
2016-06-25 06:44:16 -06:00
|
|
|
break;
|
2016-06-30 04:08:53 -06:00
|
|
|
}
|
2016-06-25 06:44:16 -06:00
|
|
|
|
|
|
|
case CEC_MSG_USER_CONTROL_PRESSED:
|
2016-11-01 03:59:34 -06:00
|
|
|
if (!(adap->capabilities & CEC_CAP_RC) ||
|
|
|
|
!(adap->log_addrs.flags & CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU))
|
2016-06-25 06:44:16 -06:00
|
|
|
break;
|
|
|
|
|
2016-07-01 04:33:10 -06:00
|
|
|
#if IS_REACHABLE(CONFIG_RC_CORE)
|
2016-06-25 06:44:16 -06:00
|
|
|
switch (msg->msg[2]) {
|
|
|
|
/*
|
|
|
|
* Play function, this message can have variable length
|
|
|
|
* depending on the specific play function that is used.
|
|
|
|
*/
|
|
|
|
case 0x60:
|
|
|
|
if (msg->len == 2)
|
|
|
|
rc_keydown(adap->rc, RC_TYPE_CEC,
|
|
|
|
msg->msg[2], 0);
|
|
|
|
else
|
|
|
|
rc_keydown(adap->rc, RC_TYPE_CEC,
|
|
|
|
msg->msg[2] << 8 | msg->msg[3], 0);
|
|
|
|
break;
|
|
|
|
/*
|
|
|
|
* Other function messages that are not handled.
|
|
|
|
* Currently the RC framework does not allow to supply an
|
|
|
|
* additional parameter to a keypress. These "keys" contain
|
|
|
|
* other information such as channel number, an input number
|
|
|
|
* etc.
|
|
|
|
* For the time being these messages are not processed by the
|
|
|
|
* framework and are simply forwarded to the user space.
|
|
|
|
*/
|
|
|
|
case 0x56: case 0x57:
|
|
|
|
case 0x67: case 0x68: case 0x69: case 0x6a:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
rc_keydown(adap->rc, RC_TYPE_CEC, msg->msg[2], 0);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CEC_MSG_USER_CONTROL_RELEASED:
|
2016-11-01 03:59:34 -06:00
|
|
|
if (!(adap->capabilities & CEC_CAP_RC) ||
|
|
|
|
!(adap->log_addrs.flags & CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU))
|
2016-06-25 06:44:16 -06:00
|
|
|
break;
|
2016-07-01 04:33:10 -06:00
|
|
|
#if IS_REACHABLE(CONFIG_RC_CORE)
|
2016-06-25 06:44:16 -06:00
|
|
|
rc_keyup(adap->rc);
|
|
|
|
#endif
|
|
|
|
break;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The remaining messages are only processed if the passthrough mode
|
|
|
|
* is off.
|
|
|
|
*/
|
|
|
|
case CEC_MSG_GET_CEC_VERSION:
|
|
|
|
cec_msg_cec_version(&tx_cec_msg, adap->log_addrs.cec_version);
|
|
|
|
return cec_transmit_msg(adap, &tx_cec_msg, false);
|
|
|
|
|
|
|
|
case CEC_MSG_GIVE_PHYSICAL_ADDR:
|
|
|
|
/* Do nothing for CEC switches using addr 15 */
|
|
|
|
if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH && dest_laddr == 15)
|
|
|
|
return 0;
|
|
|
|
cec_msg_report_physical_addr(&tx_cec_msg, adap->phys_addr, devtype);
|
|
|
|
return cec_transmit_msg(adap, &tx_cec_msg, false);
|
|
|
|
|
|
|
|
case CEC_MSG_GIVE_DEVICE_VENDOR_ID:
|
|
|
|
if (adap->log_addrs.vendor_id == CEC_VENDOR_ID_NONE)
|
|
|
|
return cec_feature_abort(adap, msg);
|
|
|
|
cec_msg_device_vendor_id(&tx_cec_msg, adap->log_addrs.vendor_id);
|
|
|
|
return cec_transmit_msg(adap, &tx_cec_msg, false);
|
|
|
|
|
|
|
|
case CEC_MSG_ABORT:
|
|
|
|
/* Do nothing for CEC switches */
|
|
|
|
if (devtype == CEC_OP_PRIM_DEVTYPE_SWITCH)
|
|
|
|
return 0;
|
|
|
|
return cec_feature_refused(adap, msg);
|
|
|
|
|
|
|
|
case CEC_MSG_GIVE_OSD_NAME: {
|
|
|
|
if (adap->log_addrs.osd_name[0] == 0)
|
|
|
|
return cec_feature_abort(adap, msg);
|
|
|
|
cec_msg_set_osd_name(&tx_cec_msg, adap->log_addrs.osd_name);
|
|
|
|
return cec_transmit_msg(adap, &tx_cec_msg, false);
|
|
|
|
}
|
|
|
|
|
|
|
|
case CEC_MSG_GIVE_FEATURES:
|
2016-12-09 06:28:19 -07:00
|
|
|
if (adap->log_addrs.cec_version < CEC_OP_CEC_VERSION_2_0)
|
|
|
|
return cec_feature_abort(adap, msg);
|
2016-12-09 06:36:03 -07:00
|
|
|
cec_fill_msg_report_features(adap, &tx_cec_msg, la_idx);
|
|
|
|
return cec_transmit_msg(adap, &tx_cec_msg, false);
|
2016-06-25 06:44:16 -06:00
|
|
|
|
|
|
|
default:
|
|
|
|
/*
|
|
|
|
* Unprocessed messages are aborted if userspace isn't doing
|
|
|
|
* any processing either.
|
|
|
|
*/
|
2016-08-24 02:36:53 -06:00
|
|
|
if (!is_broadcast && !is_reply && !adap->follower_cnt &&
|
2016-06-25 06:44:16 -06:00
|
|
|
!adap->cec_follower && msg->msg[1] != CEC_MSG_FEATURE_ABORT)
|
|
|
|
return cec_feature_abort(adap, msg);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
skip_processing:
|
2016-11-01 04:55:05 -06:00
|
|
|
/* If this was a reply, then we're done, unless otherwise specified */
|
|
|
|
if (is_reply && !(msg->flags & CEC_MSG_FL_REPLY_TO_FOLLOWERS))
|
2016-06-25 06:44:16 -06:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Send to the exclusive follower if there is one, otherwise send
|
|
|
|
* to all followers.
|
|
|
|
*/
|
|
|
|
if (adap->cec_follower)
|
|
|
|
cec_queue_msg_fh(adap->cec_follower, msg);
|
|
|
|
else
|
|
|
|
cec_queue_msg_followers(adap, msg);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Helper functions to keep track of the 'monitor all' use count.
|
|
|
|
*
|
|
|
|
* These functions are called with adap->lock held.
|
|
|
|
*/
|
|
|
|
int cec_monitor_all_cnt_inc(struct cec_adapter *adap)
|
|
|
|
{
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
if (adap->monitor_all_cnt == 0)
|
|
|
|
ret = call_op(adap, adap_monitor_all_enable, 1);
|
|
|
|
if (ret == 0)
|
|
|
|
adap->monitor_all_cnt++;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
void cec_monitor_all_cnt_dec(struct cec_adapter *adap)
|
|
|
|
{
|
|
|
|
adap->monitor_all_cnt--;
|
|
|
|
if (adap->monitor_all_cnt == 0)
|
|
|
|
WARN_ON(call_op(adap, adap_monitor_all_enable, 0));
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_MEDIA_CEC_DEBUG
|
|
|
|
/*
|
|
|
|
* Log the current state of the CEC adapter.
|
|
|
|
* Very useful for debugging.
|
|
|
|
*/
|
|
|
|
int cec_adap_status(struct seq_file *file, void *priv)
|
|
|
|
{
|
|
|
|
struct cec_adapter *adap = dev_get_drvdata(file->private);
|
|
|
|
struct cec_data *data;
|
|
|
|
|
|
|
|
mutex_lock(&adap->lock);
|
|
|
|
seq_printf(file, "configured: %d\n", adap->is_configured);
|
|
|
|
seq_printf(file, "configuring: %d\n", adap->is_configuring);
|
|
|
|
seq_printf(file, "phys_addr: %x.%x.%x.%x\n",
|
|
|
|
cec_phys_addr_exp(adap->phys_addr));
|
|
|
|
seq_printf(file, "number of LAs: %d\n", adap->log_addrs.num_log_addrs);
|
|
|
|
seq_printf(file, "LA mask: 0x%04x\n", adap->log_addrs.log_addr_mask);
|
|
|
|
if (adap->cec_follower)
|
|
|
|
seq_printf(file, "has CEC follower%s\n",
|
|
|
|
adap->passthrough ? " (in passthrough mode)" : "");
|
|
|
|
if (adap->cec_initiator)
|
|
|
|
seq_puts(file, "has CEC initiator\n");
|
|
|
|
if (adap->monitor_all_cnt)
|
|
|
|
seq_printf(file, "file handles in Monitor All mode: %u\n",
|
|
|
|
adap->monitor_all_cnt);
|
|
|
|
data = adap->transmitting;
|
|
|
|
if (data)
|
2016-07-17 08:40:05 -06:00
|
|
|
seq_printf(file, "transmitting message: %*ph (reply: %02x, timeout: %ums)\n",
|
|
|
|
data->msg.len, data->msg.msg, data->msg.reply,
|
|
|
|
data->msg.timeout);
|
|
|
|
seq_printf(file, "pending transmits: %u\n", adap->transmit_queue_sz);
|
2016-06-25 06:44:16 -06:00
|
|
|
list_for_each_entry(data, &adap->transmit_queue, list) {
|
2016-07-17 08:40:05 -06:00
|
|
|
seq_printf(file, "queued tx message: %*ph (reply: %02x, timeout: %ums)\n",
|
|
|
|
data->msg.len, data->msg.msg, data->msg.reply,
|
|
|
|
data->msg.timeout);
|
2016-06-25 06:44:16 -06:00
|
|
|
}
|
|
|
|
list_for_each_entry(data, &adap->wait_queue, list) {
|
2016-07-17 08:40:05 -06:00
|
|
|
seq_printf(file, "message waiting for reply: %*ph (reply: %02x, timeout: %ums)\n",
|
|
|
|
data->msg.len, data->msg.msg, data->msg.reply,
|
|
|
|
data->msg.timeout);
|
2016-06-25 06:44:16 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
call_void_op(adap, adap_status, file);
|
|
|
|
mutex_unlock(&adap->lock);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|