ALSA: hda - Add input volume control for each mic/line-in pin
The input pins on cirrus codecs have also input amps. Let's make control elemetns for them. Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -742,6 +742,27 @@ static struct hda_bind_ctls *make_bind_capture(struct hda_codec *codec,
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return bind;
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}
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/* add a (input-boost) volume control to the given input pin */
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static int add_input_volume_control(struct hda_codec *codec,
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struct auto_pin_cfg *cfg,
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int item)
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{
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hda_nid_t pin = cfg->inputs[item].pin;
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u32 caps;
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const char *label;
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struct snd_kcontrol *kctl;
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if (!(get_wcaps(codec, pin) & AC_WCAP_IN_AMP))
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return 0;
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caps = query_amp_caps(codec, pin, HDA_INPUT);
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caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
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if (caps <= 1)
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return 0;
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label = hda_get_autocfg_input_label(codec, cfg, item);
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return add_volume(codec, label, 0,
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HDA_COMPOSE_AMP_VAL(pin, 3, 0, HDA_INPUT), 1, &kctl);
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}
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static int build_input(struct hda_codec *codec)
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{
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struct cs_spec *spec = codec->spec;
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@ -781,6 +802,12 @@ static int build_input(struct hda_codec *codec)
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return err;
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}
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for (i = 0; i < spec->num_inputs; i++) {
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err = add_input_volume_control(codec, &spec->autocfg, i);
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if (err < 0)
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return err;
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}
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return 0;
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}
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