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authorRaymond Yau <superquad.vortex2@gmail.com>2012-01-17 11:32:17 +0800
committerTakashi Iwai <tiwai@suse.de>2012-01-24 15:25:08 +0100
commitbb92b7c4ed4f7d5102bb1623cc8a1a9960ddfc08 (patch)
treed92a7641af16f2b7952a4c091756e067650c11b2 /sound/pci/au88x0/au88x0_pcm.c
parentdcd6c92267155e70a94b3927bce681ce74b80d1f (diff)
ALSA: Au88x0 - Implement subdevice volume controls
- add "PCM Playback Volume" controls for 16 playback subdevices This allow application to change the volume of each subdevice by using hardware mixer of au88x0 and default is zero gain/attenunation. Signed-off-by: Raymond Yau <superquad.vortex2@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/au88x0/au88x0_pcm.c')
-rw-r--r--sound/pci/au88x0/au88x0_pcm.c127
1 files changed, 123 insertions, 4 deletions
diff --git a/sound/pci/au88x0/au88x0_pcm.c b/sound/pci/au88x0/au88x0_pcm.c
index 0ef2f9712208..e59f120742a4 100644
--- a/sound/pci/au88x0/au88x0_pcm.c
+++ b/sound/pci/au88x0/au88x0_pcm.c
@@ -122,6 +122,18 @@ static struct snd_pcm_hw_constraint_list hw_constraints_au8830_channels = {
.mask = 0,
};
#endif
+
+static void vortex_notify_pcm_vol_change(struct snd_card *card,
+ struct snd_kcontrol *kctl, int activate)
+{
+ if (activate)
+ kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ else
+ kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+ snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE |
+ SNDRV_CTL_EVENT_MASK_INFO, &(kctl->id));
+}
+
/* open callback */
static int snd_vortex_pcm_open(struct snd_pcm_substream *substream)
{
@@ -230,12 +242,14 @@ snd_vortex_pcm_hw_params(struct snd_pcm_substream *substream,
if (stream != NULL)
vortex_adb_allocroute(chip, stream->dma,
stream->nr_ch, stream->dir,
- stream->type);
+ stream->type,
+ substream->number);
/* Alloc routes. */
dma =
vortex_adb_allocroute(chip, -1,
params_channels(hw_params),
- substream->stream, type);
+ substream->stream, type,
+ substream->number);
if (dma < 0) {
spin_unlock_irq(&chip->lock);
return dma;
@@ -246,6 +260,11 @@ snd_vortex_pcm_hw_params(struct snd_pcm_substream *substream,
vortex_adbdma_setbuffers(chip, dma,
params_period_bytes(hw_params),
params_periods(hw_params));
+ if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB) {
+ chip->pcm_vol[substream->number].active = 1;
+ vortex_notify_pcm_vol_change(chip->card,
+ chip->pcm_vol[substream->number].kctl, 1);
+ }
}
#ifndef CHIP_AU8810
else {
@@ -275,10 +294,18 @@ static int snd_vortex_pcm_hw_free(struct snd_pcm_substream *substream)
spin_lock_irq(&chip->lock);
// Delete audio routes.
if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
- if (stream != NULL)
+ if (stream != NULL) {
+ if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB) {
+ chip->pcm_vol[substream->number].active = 0;
+ vortex_notify_pcm_vol_change(chip->card,
+ chip->pcm_vol[substream->number].kctl,
+ 0);
+ }
vortex_adb_allocroute(chip, stream->dma,
stream->nr_ch, stream->dir,
- stream->type);
+ stream->type,
+ substream->number);
+ }
}
#ifndef CHIP_AU8810
else {
@@ -506,6 +533,83 @@ static struct snd_kcontrol_new snd_vortex_mixer_spdif[] __devinitdata = {
},
};
+/* subdevice PCM Volume control */
+
+static int snd_vortex_pcm_vol_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ vortex_t *vortex = snd_kcontrol_chip(kcontrol);
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = (VORTEX_IS_QUAD(vortex) ? 4 : 2);
+ uinfo->value.integer.min = -128;
+ uinfo->value.integer.max = 32;
+ return 0;
+}
+
+static int snd_vortex_pcm_vol_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int i;
+ vortex_t *vortex = snd_kcontrol_chip(kcontrol);
+ int subdev = kcontrol->id.subdevice;
+ struct pcm_vol *p = &vortex->pcm_vol[subdev];
+ int max_chn = (VORTEX_IS_QUAD(vortex) ? 4 : 2);
+ for (i = 0; i < max_chn; i++)
+ ucontrol->value.integer.value[i] = p->vol[i];
+ return 0;
+}
+
+static int snd_vortex_pcm_vol_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int i;
+ int changed = 0;
+ int mixin;
+ unsigned char vol;
+ vortex_t *vortex = snd_kcontrol_chip(kcontrol);
+ int subdev = kcontrol->id.subdevice;
+ struct pcm_vol *p = &vortex->pcm_vol[subdev];
+ int max_chn = (VORTEX_IS_QUAD(vortex) ? 4 : 2);
+ for (i = 0; i < max_chn; i++) {
+ if (p->vol[i] != ucontrol->value.integer.value[i]) {
+ p->vol[i] = ucontrol->value.integer.value[i];
+ if (p->active) {
+ switch (vortex->dma_adb[p->dma].nr_ch) {
+ case 1:
+ mixin = p->mixin[0];
+ break;
+ case 2:
+ default:
+ mixin = p->mixin[(i < 2) ? i : (i - 2)];
+ break;
+ case 4:
+ mixin = p->mixin[i];
+ break;
+ };
+ vol = p->vol[i];
+ vortex_mix_setinputvolumebyte(vortex,
+ vortex->mixplayb[i], mixin, vol);
+ }
+ changed = 1;
+ }
+ }
+ return changed;
+}
+
+static const DECLARE_TLV_DB_MINMAX(vortex_pcm_vol_db_scale, -9600, 2400);
+
+static struct snd_kcontrol_new snd_vortex_pcm_vol __devinitdata = {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "PCM Playback Volume",
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
+ SNDRV_CTL_ELEM_ACCESS_TLV_READ |
+ SNDRV_CTL_ELEM_ACCESS_INACTIVE,
+ .info = snd_vortex_pcm_vol_info,
+ .get = snd_vortex_pcm_vol_get,
+ .put = snd_vortex_pcm_vol_put,
+ .tlv = { .p = vortex_pcm_vol_db_scale },
+};
+
/* create a pcm device */
static int __devinit snd_vortex_new_pcm(vortex_t *chip, int idx, int nr)
{
@@ -555,5 +659,20 @@ static int __devinit snd_vortex_new_pcm(vortex_t *chip, int idx, int nr)
return err;
}
}
+ if (VORTEX_PCM_TYPE(pcm) == VORTEX_PCM_ADB) {
+ for (i = 0; i < NR_PCM; i++) {
+ chip->pcm_vol[i].active = 0;
+ chip->pcm_vol[i].dma = -1;
+ kctl = snd_ctl_new1(&snd_vortex_pcm_vol, chip);
+ if (!kctl)
+ return -ENOMEM;
+ chip->pcm_vol[i].kctl = kctl;
+ kctl->id.device = 0;
+ kctl->id.subdevice = i;
+ err = snd_ctl_add(chip->card, kctl);
+ if (err < 0)
+ return err;
+ }
+ }
return 0;
}