int sound_install_audiodrv(int vers, char *name, struct audio_driver *driver,
int driver_size, int flags, unsigned int format_mask,
void *devc, int dma1, int dma2)
{
struct audio_driver *d;
struct audio_operations *op;
int num;
if (vers != AUDIO_DRIVER_VERSION || driver_size > sizeof(struct audio_driver)) {
printk(KERN_ERR "Sound: Incompatible audio driver for %s\n", name);
return -(EINVAL);
}
num = sound_alloc_audiodev();
if (num == -1) {
printk(KERN_ERR "sound: Too many audio drivers\n");
return -(EBUSY);
}
d = (struct audio_driver *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct audio_driver)));
if (sound_nblocks < 1024)
sound_nblocks++;
op = (struct audio_operations *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct audio_operations)));
if (sound_nblocks < 1024)
sound_nblocks++;
if (d == NULL || op == NULL) {
printk(KERN_ERR "Sound: Can't allocate driver for (%s)\n", name);
sound_unload_audiodev(num);
return -(ENOMEM);
}
memset((char *) op, 0, sizeof(struct audio_operations));
init_waitqueue_head(&op->in_sleeper);
init_waitqueue_head(&op->out_sleeper);
init_waitqueue_head(&op->poll_sleeper);
if (driver_size < sizeof(struct audio_driver))
memset((char *) d, 0, sizeof(struct audio_driver));
memcpy((char *) d, (char *) driver, driver_size);
op->d = d;
strlcpy(op->name, name, sizeof(op->name));
op->flags = flags;
op->format_mask = format_mask;
op->devc = devc;
/*
* Hardcoded defaults
*/
audio_devs[num] = op;
DMAbuf_init(num, dma1, dma2);
audio_init_devices();
return num;
}
void
soundcard_init (void)
{
#ifndef MODULE
module_register_chrdev (sound_major, "sound", &sound_fops);
chrdev_registered = 1;
#endif
soundcard_configured = 1;
sndtable_init (); /* Initialize call tables and detect cards */
#ifdef CONFIG_LOWLEVEL_SOUND
{
extern void sound_init_lowlevel_drivers (void);
sound_init_lowlevel_drivers ();
}
#endif
if (sndtable_get_cardcount () == 0)
return; /* No cards detected */
#ifdef CONFIG_AUDIO
if (num_audiodevs) /* Audio devices present */
{
DMAbuf_init ();
audio_init ();
}
#endif
#ifdef CONFIG_MIDI
if (num_midis)
MIDIbuf_init ();
#endif
#ifdef CONFIG_SEQUENCER
if (num_midis + num_synths)
sequencer_init ();
#endif
}
static void
start_services()
{
int soundcards_installed;
if (!(soundcards_installed = sndtable_get_cardcount()))
return ; /* No cards detected */
#ifdef CONFIG_AUDIO
if (num_audiodevs) /* Audio devices present */
DMAbuf_init();
#endif
#ifdef CONFIG_MIDI
if (num_midis)
/* MIDIbuf_init(0) */;
#endif
#ifdef CONFIG_SEQUENCER
if (num_midis + num_synths)
sequencer_init();
#endif
}