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ALSA: asihpi - Add volume mute controls

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Mute functionality was recently added to the DSP firmware

Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Eliot Blennerhassett 2011-07-22 15:53:03 +12:00 committed by Takashi Iwai
parent c830613574
commit fe0aa88eec
1 changed files with 50 additions and 1 deletions
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51
sound/pci/asihpi/asihpi.c
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@ -1487,11 +1487,48 @@ static int snd_asihpi_volume_put(struct snd_kcontrol *kcontrol,
static const DECLARE_TLV_DB_SCALE(db_scale_100, -10000, VOL_STEP_mB, 0);
static int snd_asihpi_volume_mute_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 1;
return 0;
}
static int snd_asihpi_volume_mute_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
u32 h_control = kcontrol->private_value;
u32 mute;
hpi_handle_error(hpi_volume_get_mute(h_control, &mute));
ucontrol->value.integer.value[0] = mute ? 0 : 1;
return 0;
}
static int snd_asihpi_volume_mute_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
u32 h_control = kcontrol->private_value;
int change = 1;
/* HPI currently only supports all or none muting of multichannel volume
ALSA Switch element has opposite sense to HPI mute: on==unmuted, off=muted
*/
int mute = ucontrol->value.integer.value[0] ? 0 : HPI_BITMASK_ALL_CHANNELS;
hpi_handle_error(hpi_volume_set_mute(h_control, mute));
return change;
}
static int __devinit snd_asihpi_volume_add(struct snd_card_asihpi *asihpi,
struct hpi_control *hpi_ctl)
{
struct snd_card *card = asihpi->card;
struct snd_kcontrol_new snd_control;
int err;
u32 mute;
asihpi_ctl_init(&snd_control, hpi_ctl, "Volume");
snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
@ -1501,7 +1538,19 @@ static int __devinit snd_asihpi_volume_add(struct snd_card_asihpi *asihpi,
snd_control.put = snd_asihpi_volume_put;
snd_control.tlv.p = db_scale_100;
return ctl_add(card, &snd_control, asihpi);
err = ctl_add(card, &snd_control, asihpi);
if (err)
return err;
if (hpi_volume_get_mute(hpi_ctl->h_control, &mute) == 0) {
asihpi_ctl_init(&snd_control, hpi_ctl, "Switch");
snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
snd_control.info = snd_asihpi_volume_mute_info;
snd_control.get = snd_asihpi_volume_mute_get;
snd_control.put = snd_asihpi_volume_mute_put;
err = ctl_add(card, &snd_control, asihpi);
}
return err;
}
/*------------------------------------------------------------