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>
diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
index 3444bd7..f2b35e1 100644
--- a/sound/pci/asihpi/asihpi.c
+++ b/sound/pci/asihpi/asihpi.c
@@ -1487,11 +1487,48 @@
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 @@
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;
}
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