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ALSA: hda - Re-implementation of VIA Independent-HP sharing with side stream

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This patch adds the re-implementation of Independent-HP mode in the
case where the DAC is shared between HP and side-channel streams.
Now the driver tries to parse the output-path using the pre-parsed
side-channel DAC for the independent HP output, too.

When a playback PCM stream is opened with this shared mode, the
Independent-HP mixer switch can't be changed for avoiding the conflict,
thus it returns -EBUSY error.

One remaining unintuitive issue is that the DAC volume is still
controlled as "Side" volume although it's shared by both independent-HP
and side streams.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-06-30 17:24:47 +02:00
parent e322a36d39
commit 2525050518
1 changed files with 37 additions and 6 deletions
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43
sound/pci/hda/patch_via.c
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@ -128,6 +128,7 @@ struct via_spec {
struct hda_multi_out multiout;
hda_nid_t slave_dig_outs[2];
hda_nid_t hp_dac_nid;
bool hp_indep_shared; /* indep HP-DAC is shared with side ch */
int num_active_streams;
struct nid_path out_path[4];
@ -714,19 +715,33 @@ static int via_independent_hp_put(struct snd_kcontrol *kcontrol,
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
struct via_spec *spec = codec->spec;
int cur;
spec->hp_independent_mode = !!ucontrol->value.enumerated.item[0];
if (spec->hp_independent_mode) {
/* no independent-hp status change during PCM playback is running */
if (spec->num_active_streams)
return -EBUSY;
cur = !!ucontrol->value.enumerated.item[0];
if (spec->hp_independent_mode == cur)
return 0;
spec->hp_independent_mode = cur;
if (cur) {
activate_output_path(codec, &spec->hp_dep_path, false, false);
activate_output_path(codec, &spec->hp_path, true, false);
if (spec->hp_indep_shared)
activate_output_path(codec, &spec->out_path[HDA_SIDE],
false, false);
} else {
activate_output_path(codec, &spec->hp_path, false, false);
activate_output_path(codec, &spec->hp_dep_path, true, false);
if (spec->hp_indep_shared)
activate_output_path(codec, &spec->out_path[HDA_SIDE],
true, false);
}
/* update jack power state */
set_widgets_power_state(codec);
return 0;
return 1;
}
static const struct snd_kcontrol_new via_hp_mixer = {
@ -942,10 +957,19 @@ static int via_playback_multi_pcm_open(struct hda_pcm_stream *hinfo,
struct snd_pcm_substream *substream)
{
struct via_spec *spec = codec->spec;
const struct auto_pin_cfg *cfg = &spec->autocfg;
int err;
if (!spec->hp_independent_mode)
spec->multiout.hp_nid = spec->hp_dac_nid;
spec->multiout.hp_nid = 0;
spec->multiout.num_dacs = cfg->line_outs + spec->smart51_nums;
if (!spec->hp_independent_mode) {
if (!spec->hp_indep_shared)
spec->multiout.hp_nid = spec->hp_dac_nid;
} else {
if (spec->hp_indep_shared)
spec->multiout.num_dacs = cfg->line_outs - 1;
}
spec->multiout.max_channels = spec->multiout.num_dacs * 2;
set_stream_active(codec, true);
err = snd_hda_multi_out_analog_open(codec, &spec->multiout, substream,
hinfo);
@ -1815,13 +1839,20 @@ static int via_auto_create_hp_ctls(struct hda_codec *codec, hda_nid_t pin)
if (parse_output_path(codec, pin, 0, &spec->hp_path))
spec->hp_dac_nid = spec->hp_path.path[0];
else if (spec->multiout.dac_nids[HDA_SIDE] &&
parse_output_path(codec, pin,
spec->multiout.dac_nids[HDA_SIDE],
&spec->hp_path)) {
spec->hp_dac_nid = spec->hp_path.path[0];
spec->hp_indep_shared = true;
}
if (!parse_output_path(codec, pin, spec->multiout.dac_nids[HDA_FRONT],
&spec->hp_dep_path) &&
!spec->hp_dac_nid)
return 0;
if (spec->hp_dac_nid)
if (spec->hp_dac_nid && !spec->hp_indep_shared)
path = &spec->hp_path;
else
path = &spec->hp_dep_path;