int snd_ctl_hw_open(snd_ctl_t **handle, const char *name, int card, int mode)
{
int fd, ver;
char filename[sizeof(SNDRV_FILE_CONTROL) + 10];
int fmode;
snd_ctl_t *ctl;
snd_ctl_hw_t *hw;
int err;
*handle = NULL;
assert(card >= 0 && card < 32);
sprintf(filename, SNDRV_FILE_CONTROL, card);
if (mode & SND_CTL_READONLY)
fmode = O_RDONLY;
else
fmode = O_RDWR;
if (mode & SND_CTL_NONBLOCK)
fmode |= O_NONBLOCK;
if (mode & SND_CTL_ASYNC)
fmode |= O_ASYNC;
fd = snd_open_device(filename, fmode);
if (fd < 0) {
snd_card_load(card);
fd = snd_open_device(filename, fmode);
if (fd < 0)
return -errno;
}
#if 0
/*
* this is bogus, an application have to care about open filedescriptors
*/
if (fcntl(fd, F_SETFD, FD_CLOEXEC) != 0) {
SYSERR("fcntl FD_CLOEXEC failed");
err = -errno;
close(fd);
return err;
}
#endif
if (ioctl(fd, SNDRV_CTL_IOCTL_PVERSION, &ver) < 0) {
err = -errno;
close(fd);
return err;
}
if (SNDRV_PROTOCOL_INCOMPATIBLE(ver, SNDRV_CTL_VERSION_MAX)) {
close(fd);
return -SND_ERROR_INCOMPATIBLE_VERSION;
}
hw = calloc(1, sizeof(snd_ctl_hw_t));
if (hw == NULL) {
close(fd);
return -ENOMEM;
}
hw->card = card;
hw->fd = fd;
err = snd_ctl_new(&ctl, SND_CTL_TYPE_HW, name);
if (err < 0) {
close(fd);
free(hw);
}
ctl->ops = &snd_ctl_hw_ops;
ctl->private_data = hw;
ctl->poll_fd = fd;
*handle = ctl;
return 0;
}
int snd_akm4xxx_build_controls(struct snd_akm4xxx *ak)
{
unsigned int idx, num_emphs;
struct snd_kcontrol *ctl;
int err;
ctl = kmalloc(sizeof(*ctl), GFP_KERNEL);
if (! ctl)
return -ENOMEM;
for (idx = 0; idx < ak->num_dacs; ++idx) {
memset(ctl, 0, sizeof(*ctl));
strcpy(ctl->id.name, "DAC Volume");
ctl->id.index = idx + ak->idx_offset * 2;
ctl->id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
ctl->count = 1;
ctl->info = snd_akm4xxx_volume_info;
ctl->get = snd_akm4xxx_volume_get;
ctl->put = snd_akm4xxx_volume_put;
switch (ak->type) {
case SND_AK4524:
ctl->private_value = AK_COMPOSE(idx/2, (idx%2) + 6, 0, 127); /* register 6 & 7 */
break;
case SND_AK4528:
ctl->private_value = AK_COMPOSE(idx/2, (idx%2) + 4, 0, 127); /* register 4 & 5 */
break;
case SND_AK4529: {
int val = idx < 6 ? idx + 2 : (idx - 6) + 0xb; /* registers 2-7 and b,c */
ctl->private_value = AK_COMPOSE(0, val, 0, 255) | AK_INVERT;
break;
}
case SND_AK4355:
ctl->private_value = AK_COMPOSE(0, idx + 4, 0, 255); /* register 4-9, chip #0 only */
break;
case SND_AK4358:
if (idx >= 6)
ctl->private_value = AK_COMPOSE(0, idx + 5, 0, 255); /* register 4-9, chip #0 only */
else
ctl->private_value = AK_COMPOSE(0, idx + 4, 0, 255); /* register 4-9, chip #0 only */
break;
case SND_AK4381:
ctl->private_value = AK_COMPOSE(idx/2, (idx%2) + 3, 0, 255); /* register 3 & 4 */
break;
default:
err = -EINVAL;
goto __error;
}
ctl->private_data = ak;
if ((err = snd_ctl_add(ak->card, snd_ctl_new(ctl, SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE))) < 0)
goto __error;
}
for (idx = 0; idx < ak->num_adcs && ak->type == SND_AK4524; ++idx) {
memset(ctl, 0, sizeof(*ctl));
strcpy(ctl->id.name, "ADC Volume");
ctl->id.index = idx + ak->idx_offset * 2;
ctl->id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
ctl->count = 1;
ctl->info = snd_akm4xxx_volume_info;
ctl->get = snd_akm4xxx_volume_get;
ctl->put = snd_akm4xxx_volume_put;
ctl->private_value = AK_COMPOSE(idx/2, (idx%2) + 4, 0, 127); /* register 4 & 5 */
ctl->private_data = ak;
if ((err = snd_ctl_add(ak->card, snd_ctl_new(ctl, SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE))) < 0)
goto __error;
memset(ctl, 0, sizeof(*ctl));
strcpy(ctl->id.name, "IPGA Analog Capture Volume");
ctl->id.index = idx + ak->idx_offset * 2;
ctl->id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
ctl->count = 1;
ctl->info = snd_akm4xxx_ipga_gain_info;
ctl->get = snd_akm4xxx_ipga_gain_get;
ctl->put = snd_akm4xxx_ipga_gain_put;
ctl->private_value = AK_COMPOSE(idx/2, (idx%2) + 4, 0, 0); /* register 4 & 5 */
ctl->private_data = ak;
if ((err = snd_ctl_add(ak->card, snd_ctl_new(ctl, SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE))) < 0)
goto __error;
}
if (ak->type == SND_AK4355 || ak->type == SND_AK4358)
num_emphs = 1;
else
num_emphs = ak->num_dacs / 2;
for (idx = 0; idx < num_emphs; idx++) {
memset(ctl, 0, sizeof(*ctl));
strcpy(ctl->id.name, "Deemphasis");
ctl->id.index = idx + ak->idx_offset;
ctl->id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
ctl->count = 1;
ctl->info = snd_akm4xxx_deemphasis_info;
ctl->get = snd_akm4xxx_deemphasis_get;
ctl->put = snd_akm4xxx_deemphasis_put;
switch (ak->type) {
case SND_AK4524:
case SND_AK4528:
ctl->private_value = AK_COMPOSE(idx, 3, 0, 0); /* register 3 */
break;
case SND_AK4529: {
int shift = idx == 3 ? 6 : (2 - idx) * 2;
ctl->private_value = AK_COMPOSE(0, 8, shift, 0); /* register 8 with shift */
break;
}
case SND_AK4355:
case SND_AK4358:
ctl->private_value = AK_COMPOSE(idx, 3, 0, 0);
break;
case SND_AK4381:
ctl->private_value = AK_COMPOSE(idx, 1, 1, 0);
break;
}
ctl->private_data = ak;
if ((err = snd_ctl_add(ak->card, snd_ctl_new(ctl, SNDRV_CTL_ELEM_ACCESS_READ|SNDRV_CTL_ELEM_ACCESS_WRITE))) < 0)
goto __error;
}
err = 0;
__error:
kfree(ctl);
return err;
}
int snd_ctl_hw_open(snd_ctl_t **handle, const char *name, int card, int mode)
{
int fd, ver;
char filename[sizeof(SNDRV_FILE_CONTROL) + 10];
int fmode;
snd_ctl_t *ctl;
snd_ctl_hw_t *hw;
int err;
*handle = NULL;
if (CHECK_SANITY(card < 0 || card >= 32)) {
SNDMSG("Invalid card index %d", card);
return -EINVAL;
}
sprintf(filename, SNDRV_FILE_CONTROL, card);
if (mode & SND_CTL_READONLY)
fmode = O_RDONLY;
else
fmode = O_RDWR;
if (mode & SND_CTL_NONBLOCK)
fmode |= O_NONBLOCK;
if (mode & SND_CTL_ASYNC)
fmode |= O_ASYNC;
fd = snd_open_device(filename, fmode);
if (fd < 0) {
snd_card_load(card);
fd = snd_open_device(filename, fmode);
if (fd < 0)
return -errno;
}
if (ioctl(fd, SNDRV_CTL_IOCTL_PVERSION, &ver) < 0) {
err = -errno;
close(fd);
return err;
}
if (SNDRV_PROTOCOL_INCOMPATIBLE(ver, SNDRV_CTL_VERSION_MAX)) {
close(fd);
return -SND_ERROR_INCOMPATIBLE_VERSION;
}
hw = calloc(1, sizeof(snd_ctl_hw_t));
if (hw == NULL) {
close(fd);
return -ENOMEM;
}
hw->card = card;
hw->fd = fd;
hw->protocol = ver;
err = snd_ctl_new(&ctl, SND_CTL_TYPE_HW, name);
if (err < 0) {
close(fd);
free(hw);
return err;
}
ctl->ops = &snd_ctl_hw_ops;
ctl->private_data = hw;
ctl->poll_fd = fd;
*handle = ctl;
return 0;
}
