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ALSA: hda: slave digital out support
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Added support for playing a stream on multiple digital outs. This is done
by defining codec->slave_dig_outs as array of hda_nid_t with a null-terminated entry to set the
slave SPDIF outs, in which the slave outs have cloned settings of the master out (e.g. dig_out_nid).

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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Matthew Ranostay authored and Jaroslav Kysela committed Sep 9, 2008
1 parent de30d36 commit de51ca1
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Showing 2 changed files with 51 additions and 2 deletions.
52 changes: 50 additions & 2 deletions sound/pci/hda/hda_codec.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1454,12 +1454,22 @@ static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol,
codec->spdif_ctls = val;

if (change) {
hda_nid_t *d;
snd_hda_codec_write_cache(codec, nid, 0,
AC_VERB_SET_DIGI_CONVERT_1,
val & 0xff);
snd_hda_codec_write_cache(codec, nid, 0,
AC_VERB_SET_DIGI_CONVERT_2,
val >> 8);

for (d = codec->slave_dig_outs; *d; d++) {
snd_hda_codec_write_cache(codec, *d, 0,
AC_VERB_SET_DIGI_CONVERT_1,
val & 0xff);
snd_hda_codec_write_cache(codec, *d, 0,
AC_VERB_SET_DIGI_CONVERT_2,
val >> 8);
}
}

mutex_unlock(&codec->spdif_mutex);
Expand Down Expand Up @@ -1491,10 +1501,16 @@ static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol,
val |= AC_DIG1_ENABLE;
change = codec->spdif_ctls != val;
if (change) {
hda_nid_t *d;
codec->spdif_ctls = val;
snd_hda_codec_write_cache(codec, nid, 0,
AC_VERB_SET_DIGI_CONVERT_1,
val & 0xff);

for (d = codec->slave_dig_outs; *d; d++)
snd_hda_codec_write_cache(codec, *d, 0,
AC_VERB_SET_DIGI_CONVERT_1,
val & 0xff);
/* unmute amp switch (if any) */
if ((get_wcaps(codec, nid) & AC_WCAP_OUT_AMP) &&
(val & AC_DIG1_ENABLE))
Expand Down Expand Up @@ -1643,9 +1659,14 @@ static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol,
mutex_lock(&codec->spdif_mutex);
change = codec->spdif_in_enable != val;
if (change) {
hda_nid_t *d;
codec->spdif_in_enable = val;
snd_hda_codec_write_cache(codec, nid, 0,
AC_VERB_SET_DIGI_CONVERT_1, val);

for (d = codec->slave_dig_outs; *d; d++)
snd_hda_codec_write_cache(codec, *d, 0,
AC_VERB_SET_DIGI_CONVERT_1, val);
}
mutex_unlock(&codec->spdif_mutex);
return change;
Expand Down Expand Up @@ -2589,15 +2610,30 @@ int snd_hda_input_mux_put(struct hda_codec *codec,
static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid,
unsigned int stream_tag, unsigned int format)
{
hda_nid_t *d;

/* turn off SPDIF once; otherwise the IEC958 bits won't be updated */
if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE))
if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE)) {
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
codec->spdif_ctls & ~AC_DIG1_ENABLE & 0xff);

for (d = codec->slave_dig_outs; *d; d++)
snd_hda_codec_write(codec, *d, 0,
AC_VERB_SET_DIGI_CONVERT_1,
codec->spdif_ctls & ~AC_DIG1_ENABLE & 0xff);
}
snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
/* turn on again (if needed) */
if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE))
if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE)) {
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
codec->spdif_ctls & 0xff);

for (d = codec->slave_dig_outs; *d; d++)
snd_hda_codec_write(codec, *d, 0,
AC_VERB_SET_DIGI_CONVERT_1,
codec->spdif_ctls & 0xff);
}

}

/*
Expand All @@ -2621,8 +2657,12 @@ int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
unsigned int format,
struct snd_pcm_substream *substream)
{
hda_nid_t *nid;
mutex_lock(&codec->spdif_mutex);
setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format);
if (codec->slave_dig_outs)
for (nid = codec->slave_dig_outs; *nid; nid++)
setup_dig_out_stream(codec, *nid, stream_tag, format);
mutex_unlock(&codec->spdif_mutex);
return 0;
}
Expand Down Expand Up @@ -2689,6 +2729,7 @@ int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
struct snd_pcm_substream *substream)
{
hda_nid_t *nids = mout->dac_nids;
hda_nid_t *d;
int chs = substream->runtime->channels;
int i;

Expand All @@ -2702,9 +2743,16 @@ int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
mout->dig_out_used = HDA_DIG_ANALOG_DUP;
setup_dig_out_stream(codec, mout->dig_out_nid,
stream_tag, format);
if (codec->slave_dig_outs)
for (d = codec->slave_dig_outs; *d; d++)
setup_dig_out_stream(codec, *d,
stream_tag, format);
} else {
mout->dig_out_used = 0;
snd_hda_codec_cleanup_stream(codec, mout->dig_out_nid);
if (codec->slave_dig_outs)
for (d = codec->slave_dig_outs; *d; d++)
snd_hda_codec_cleanup_stream(codec, *d);
}
}
mutex_unlock(&codec->spdif_mutex);
Expand Down
1 change: 1 addition & 0 deletions sound/pci/hda/hda_codec.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -725,6 +725,7 @@ struct hda_codec {
unsigned int spdif_status; /* IEC958 status bits */
unsigned short spdif_ctls; /* SPDIF control bits */
unsigned int spdif_in_enable; /* SPDIF input enable? */
hda_nid_t *slave_dig_outs; /* optional digital out slave widgets */

struct snd_hwdep *hwdep; /* assigned hwdep device */

Expand Down

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