At Wed, 16 Aug 2006 15:00:47 +0200,
I wrote:
>
> At Wed, 16 Aug 2006 13:45:44 +0400,
> Andrew L. Neporada wrote:
> >
> > Hi.
> >
> > I am trying to put microphone on Connexant HDA codec to work
> > (codec PCI ID 14f1:5045, "lspci -v" and
> > "cat /proc/asound/card0/codec#0" output attached).
> >
> > Currently (with kernel 2.6.17 and alsa-driver 1.0.12rc1) playback works,
> > but there is no Mic support (no Mic control in alsamixer, no sound
> > recording).
>
> Good to hear that playback actually works on some machine.
> How is the mixer status? Check the generated file via "alsactl -f
> somefile store".
>
> The problem looks like that the input amp value isn't raised for the
> audio-input node 0x1a. Could be a bug of generic parser routine.
Could you try the patch below? Then you'll have "Mic Capture Volume",
etc. Raise it via alsamixer after changing to the capture mode via
tab key, for example.
Takashi
diff -r 3afd242c5c58 pci/hda/hda_generic.c
--- a/pci/hda/hda_generic.c Wed Aug 16 15:25:23 2006 +0200
+++ b/pci/hda/hda_generic.c Wed Aug 16 15:40:10 2006 +0200
@@ -743,28 +743,57 @@ static int build_input_controls(struct h
{
struct hda_gspec *spec = codec->spec;
struct hda_gnode *adc_node = spec->adc_node;
- int err;
-
- if (! adc_node)
+ int i, err;
+ static struct snd_kcontrol_new cap_sel = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Capture Source",
+ .info = capture_source_info,
+ .get = capture_source_get,
+ .put = capture_source_put,
+ };
+
+ if (! adc_node || ! spec->input_mux.num_items)
return 0; /* not found */
+ spec->cur_cap_src = 0;
+ select_input_connection(codec, adc_node,
+ spec->input_mux.items[0].index);
+
/* create capture volume and switch controls if the ADC has an amp */
- err = create_mixer(codec, adc_node, 0, NULL, "Capture");
+ /* do we have only a single item? */
+ if (spec->input_mux.num_items == 1) {
+ err = create_mixer(codec, adc_node,
+ spec->input_mux.items[0].index,
+ NULL, "Capture");
+ if (err < 0)
+ return err;
+ return 0;
+ }
/* create input MUX if multiple sources are available */
- if (spec->input_mux.num_items > 1) {
- static struct snd_kcontrol_new cap_sel = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Capture Source",
- .info = capture_source_info,
- .get = capture_source_get,
- .put = capture_source_put,
- };
- if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&cap_sel, codec))) < 0)
- return err;
- spec->cur_cap_src = 0;
- select_input_connection(codec, adc_node, spec->input_mux.items[0].index);
- }
+ if ((err = snd_ctl_add(codec->bus->card,
+ snd_ctl_new1(&cap_sel, codec))) < 0)
+ return err;
+
+ /* no volume control? */
+ if (! (adc_node->wid_caps & AC_WCAP_IN_AMP) ||
+ ! (adc_node->amp_in_caps & AC_AMPCAP_NUM_STEPS))
+ return 0;
+
+ for (i = 0; i < spec->input_mux.num_items; i++) {
+ struct snd_kcontrol_new knew;
+ char name[32];
+ sprintf(name, "%s Capture Volume",
+ spec->input_mux.items[i].label);
+ knew = (struct snd_kcontrol_new)
+ HDA_CODEC_VOLUME(name, adc_node->nid,
+ spec->input_mux.items[i].index,
+ HDA_INPUT);
+ if ((err = snd_ctl_add(codec->bus->card,
+ snd_ctl_new1(&knew, codec))) < 0)
+ return err;
+ }
+
return 0;
}
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