diff options
| author | Eliot Blennerhassett <eblennerhassett@audioscience.com> | 2011-07-22 07:53:03 +0400 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-07-22 09:54:20 +0400 |
| commit | fe0aa88eecfc0a9caa6f6298eb600eb7a55d8a17 (patch) | |
| tree | 4c6e4fe4e7e8afe0ee5eeef31341c701dd397330 /sound | |
| parent | c8306135746687b30048f8bd949d2dfb8d6c697a (diff) | |
| download | linux-fe0aa88eecfc0a9caa6f6298eb600eb7a55d8a17.tar.xz | |
ALSA: asihpi - Add volume mute controls
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>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/asihpi/asihpi.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c index 3444bd7d3268..f2b35e1bdc90 100644 --- a/sound/pci/asihpi/asihpi.c +++ b/sound/pci/asihpi/asihpi.c @@ -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; } /*------------------------------------------------------------ |