/*
* open port for OSS sequencer
*/
static int
snd_emux_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
{
struct snd_emux *emu;
struct snd_emux_port *p;
struct snd_seq_port_callback callback;
char tmpname[64];
emu = closure;
if (snd_BUG_ON(!arg || !emu))
return -ENXIO;
mutex_lock(&emu->register_mutex);
if (!snd_emux_inc_count(emu)) {
mutex_unlock(&emu->register_mutex);
return -EFAULT;
}
memset(&callback, 0, sizeof(callback));
callback.owner = THIS_MODULE;
callback.event_input = snd_emux_event_oss_input;
sprintf(tmpname, "%s OSS Port", emu->name);
p = snd_emux_create_port(emu, tmpname, 32,
1, &callback);
if (p == NULL) {
snd_printk(KERN_ERR "can't create port\n");
snd_emux_dec_count(emu);
mutex_unlock(&emu->register_mutex);
return -ENOMEM;
}
/* fill the argument data */
arg->private_data = p;
arg->addr.client = p->chset.client;
arg->addr.port = p->chset.port;
p->oss_arg = arg;
reset_port_mode(p, arg->seq_mode);
snd_emux_reset_port(p);
mutex_unlock(&emu->register_mutex);
return 0;
}
/*
* Routine that is called upon a first use of a particular port
*/
static int
snd_emux_use(void *private_data, snd_seq_port_subscribe_t *info)
{
snd_emux_port_t *p;
snd_emux_t *emu;
p = private_data;
snd_assert(p != NULL, return -EINVAL);
emu = p->emu;
snd_assert(emu != NULL, return -EINVAL);
down(&emu->register_mutex);
snd_emux_init_port(p);
snd_emux_inc_count(emu);
up(&emu->register_mutex);
return 0;
}
/*
* Routine that is called upon a first use of a particular port
*/
static int
snd_emux_use(void *private_data, struct snd_seq_port_subscribe *info)
{
struct snd_emux_port *p;
struct snd_emux *emu;
p = private_data;
snd_assert(p != NULL, return -EINVAL);
emu = p->emu;
snd_assert(emu != NULL, return -EINVAL);
mutex_lock(&emu->register_mutex);
snd_emux_init_port(p);
snd_emux_inc_count(emu);
mutex_unlock(&emu->register_mutex);
return 0;
}
/*
* Routine that is called upon a first use of a particular port
*/
static int
snd_emux_use(void *private_data, struct snd_seq_port_subscribe *info)
{
struct snd_emux_port *p;
struct snd_emux *emu;
p = private_data;
if (snd_BUG_ON(!p))
return -EINVAL;
emu = p->emu;
if (snd_BUG_ON(!emu))
return -EINVAL;
mutex_lock(&emu->register_mutex);
snd_emux_init_port(p);
snd_emux_inc_count(emu);
mutex_unlock(&emu->register_mutex);
return 0;
}
