void cec_register_cec_notifier(struct cec_adapter *adap,
struct cec_notifier *notifier)
{
if (WARN_ON(!cec_is_registered(adap)))
return;
adap->notifier = notifier;
cec_notifier_register(adap->notifier, adap, cec_cec_notify);
}
static long cec_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct cec_fh *fh = filp->private_data;
struct cec_adapter *adap = fh->adap;
bool block = !(filp->f_flags & O_NONBLOCK);
void __user *parg = (void __user *)arg;
if (!cec_is_registered(adap))
return -ENODEV;
switch (cmd) {
case CEC_ADAP_G_CAPS:
return cec_adap_g_caps(adap, parg);
case CEC_ADAP_G_PHYS_ADDR:
return cec_adap_g_phys_addr(adap, parg);
case CEC_ADAP_S_PHYS_ADDR:
return cec_adap_s_phys_addr(adap, fh, block, parg);
case CEC_ADAP_G_LOG_ADDRS:
return cec_adap_g_log_addrs(adap, parg);
case CEC_ADAP_S_LOG_ADDRS:
return cec_adap_s_log_addrs(adap, fh, block, parg);
case CEC_TRANSMIT:
return cec_transmit(adap, fh, block, parg);
case CEC_RECEIVE:
return cec_receive(adap, fh, block, parg);
case CEC_DQEVENT:
return cec_dqevent(adap, fh, block, parg);
case CEC_G_MODE:
return cec_g_mode(adap, fh, parg);
case CEC_S_MODE:
return cec_s_mode(adap, fh, parg);
default:
return -ENOTTY;
}
}
static __poll_t cec_poll(struct file *filp,
struct poll_table_struct *poll)
{
struct cec_fh *fh = filp->private_data;
struct cec_adapter *adap = fh->adap;
__poll_t res = 0;
if (!cec_is_registered(adap))
return EPOLLERR | EPOLLHUP;
mutex_lock(&adap->lock);
if (adap->is_configured &&
adap->transmit_queue_sz < CEC_MAX_MSG_TX_QUEUE_SZ)
res |= EPOLLOUT | EPOLLWRNORM;
if (fh->queued_msgs)
res |= EPOLLIN | EPOLLRDNORM;
if (fh->total_queued_events)
res |= EPOLLPRI;
poll_wait(filp, &fh->wait, poll);
mutex_unlock(&adap->lock);
return res;
}
/* Override for the release function */
static int cec_release(struct inode *inode, struct file *filp)
{
struct cec_devnode *devnode = cec_devnode_data(filp);
struct cec_adapter *adap = to_cec_adapter(devnode);
struct cec_fh *fh = filp->private_data;
unsigned int i;
mutex_lock(&adap->lock);
if (adap->cec_initiator == fh)
adap->cec_initiator = NULL;
if (adap->cec_follower == fh) {
adap->cec_follower = NULL;
adap->passthrough = false;
}
if (fh->mode_follower == CEC_MODE_FOLLOWER)
adap->follower_cnt--;
if (fh->mode_follower == CEC_MODE_MONITOR_PIN)
cec_monitor_pin_cnt_dec(adap);
if (fh->mode_follower == CEC_MODE_MONITOR_ALL)
cec_monitor_all_cnt_dec(adap);
mutex_unlock(&adap->lock);
mutex_lock(&devnode->lock);
list_del(&fh->list);
if (cec_is_registered(adap) && list_empty(&devnode->fhs) &&
!adap->needs_hpd && adap->phys_addr == CEC_PHYS_ADDR_INVALID) {
WARN_ON(adap->ops->adap_enable(adap, false));
}
mutex_unlock(&devnode->lock);
/* Unhook pending transmits from this filehandle. */
mutex_lock(&adap->lock);
while (!list_empty(&fh->xfer_list)) {
struct cec_data *data =
list_first_entry(&fh->xfer_list, struct cec_data, xfer_list);
data->blocking = false;
data->fh = NULL;
list_del(&data->xfer_list);
}
mutex_unlock(&adap->lock);
while (!list_empty(&fh->msgs)) {
struct cec_msg_entry *entry =
list_first_entry(&fh->msgs, struct cec_msg_entry, list);
list_del(&entry->list);
kfree(entry);
}
for (i = CEC_NUM_CORE_EVENTS; i < CEC_NUM_EVENTS; i++) {
while (!list_empty(&fh->events[i])) {
struct cec_event_entry *entry =
list_first_entry(&fh->events[i],
struct cec_event_entry, list);
list_del(&entry->list);
kfree(entry);
}
}
kfree(fh);
cec_put_device(devnode);
filp->private_data = NULL;
return 0;
}
