[ALSA] hda-codec - add support for analog loopback to STAC9204/9205/922x/927x
The analog loopback routes the sound just before it enters ADC0
to output of DAC0.
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 297f740..c94775c 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -147,6 +147,7 @@
/* i/o switches */
unsigned int io_switch[2];
unsigned int clfe_swap;
+ unsigned int aloopback;
struct hda_pcm pcm_rec[2]; /* PCM information */
@@ -296,6 +297,49 @@
spec->mux_nids[adc_idx], &spec->cur_mux[adc_idx]);
}
+#define stac92xx_aloopback_info snd_ctl_boolean_mono_info
+
+static int stac92xx_aloopback_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct sigmatel_spec *spec = codec->spec;
+
+ ucontrol->value.integer.value[0] = spec->aloopback;
+ return 0;
+}
+
+static int stac92xx_aloopback_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct sigmatel_spec *spec = codec->spec;
+ unsigned int dac_mode;
+
+ if (spec->aloopback == ucontrol->value.integer.value[0])
+ return 0;
+
+ spec->aloopback = ucontrol->value.integer.value[0];
+
+
+ dac_mode = snd_hda_codec_read(codec, codec->afg, 0,
+ kcontrol->private_value & 0xFFFF, 0x0);
+
+ if (spec->aloopback) {
+ snd_hda_power_up(codec);
+ dac_mode |= 0x40;
+ } else {
+ snd_hda_power_down(codec);
+ dac_mode &= ~0x40;
+ }
+
+ snd_hda_codec_write_cache(codec, codec->afg, 0,
+ kcontrol->private_value >> 16, dac_mode);
+
+ return 1;
+}
+
+
static struct hda_verb stac9200_core_init[] = {
/* set dac0mux for dac converter */
{ 0x07, AC_VERB_SET_CONNECT_SEL, 0x00},
@@ -346,6 +390,17 @@
.put = stac92xx_mux_enum_put, \
}
+#define STAC_ANALOG_LOOPBACK(verb_read,verb_write) \
+ { \
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+ .name = "Analog Loopback", \
+ .count = 1, \
+ .info = stac92xx_aloopback_info, \
+ .get = stac92xx_aloopback_get, \
+ .put = stac92xx_aloopback_put, \
+ .private_value = verb_read | (verb_write << 16), \
+ }
+
static struct snd_kcontrol_new stac9200_mixer[] = {
HDA_CODEC_VOLUME("Master Playback Volume", 0xb, 0, HDA_OUTPUT),
@@ -377,6 +432,7 @@
/* This needs to be generated dynamically based on sequence */
static struct snd_kcontrol_new stac9227_mixer[] = {
STAC_INPUT_SOURCE,
+ STAC_ANALOG_LOOPBACK(0xFEB, 0x7EB),
HDA_CODEC_VOLUME("Capture Volume", 0x15, 0x0, HDA_OUTPUT),
HDA_CODEC_MUTE("Capture Switch", 0x1b, 0x0, HDA_OUTPUT),
{ } /* end */
@@ -384,6 +440,7 @@
static struct snd_kcontrol_new stac927x_mixer[] = {
STAC_INPUT_SOURCE,
+ STAC_ANALOG_LOOPBACK(0xFEB, 0x7EB),
HDA_CODEC_VOLUME("InMux Capture Volume", 0x15, 0x0, HDA_OUTPUT),
HDA_CODEC_VOLUME("InVol Capture Volume", 0x18, 0x0, HDA_INPUT),
HDA_CODEC_MUTE("ADCMux Capture Switch", 0x1b, 0x0, HDA_OUTPUT),
@@ -400,6 +457,7 @@
.put = stac92xx_dmux_enum_put,
},
STAC_INPUT_SOURCE,
+ STAC_ANALOG_LOOPBACK(0xFE0, 0x7E0),
HDA_CODEC_VOLUME("InMux Capture Volume", 0x19, 0x0, HDA_OUTPUT),
HDA_CODEC_VOLUME("InVol Capture Volume", 0x1b, 0x0, HDA_INPUT),
HDA_CODEC_MUTE("ADCMux Capture Switch", 0x1d, 0x0, HDA_OUTPUT),