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Commit 5f10c4a9 authored by Maxim Levitsky's avatar Maxim Levitsky Committed by Jaroslav Kysela
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[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: default avatarMaxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 0fb87bb4

sound/pci/hda/patch_sigmatel.c

+58 −0
Original line number Diff line number Diff line
@@ -147,6 +147,7 @@ struct sigmatel_spec { 
	/* 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 @@ static int stac92xx_mux_enum_put(struct snd_kcontrol *kcontrol, struct snd_ctl_e 
				     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 @@ static struct hda_verb stac9205_core_init[] = { 
		.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 @@ static struct snd_kcontrol_new stac922x_mixer[] = { 
/* 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 stac9227_mixer[] = { 


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 @@ static struct snd_kcontrol_new stac9205_mixer[] = { 
		.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),