From: Takashi Iwai Date: Fri, 21 Dec 2012 13:09:42 +0000 (+0100) Subject: ALSA: hda - Implement independent HP control X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=38cf6f1a41e40a33d80924554b356fcd5b5d2751;p=linux-beck.git ALSA: hda - Implement independent HP control Similar like the implementation in patch_analog.c and patch_via.c, the generic parser can provide the independent HP PCM stream now. It's enabled when spec->indep_hp is set by the caller while parsing. Currently no dynamic PCM switching as in patch_via.c is implemented yet. The control returns -EBUSY when the value is changed during PCM operations. Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c index f3c6ace2c87f..ff15aea836da 100644 --- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -41,6 +41,7 @@ int snd_hda_gen_spec_init(struct hda_gen_spec *spec) snd_array_init(&spec->kctls, sizeof(struct snd_kcontrol_new), 32); snd_array_init(&spec->bind_ctls, sizeof(struct hda_bind_ctls *), 8); snd_array_init(&spec->paths, sizeof(struct nid_path), 8); + mutex_init(&spec->pcm_mutex); return 0; } EXPORT_SYMBOL_HDA(snd_hda_gen_spec_init); @@ -1484,6 +1485,79 @@ static int create_speaker_out_ctls(struct hda_codec *codec) "Speaker"); } +/* + * independent HP controls + */ + +static int indep_hp_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + return snd_hda_enum_bool_helper_info(kcontrol, uinfo); +} + +static int indep_hp_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct hda_codec *codec = snd_kcontrol_chip(kcontrol); + struct hda_gen_spec *spec = codec->spec; + ucontrol->value.enumerated.item[0] = spec->indep_hp_enabled; + return 0; +} + +static int indep_hp_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct hda_codec *codec = snd_kcontrol_chip(kcontrol); + struct hda_gen_spec *spec = codec->spec; + unsigned int select = ucontrol->value.enumerated.item[0]; + int ret = 0; + + mutex_lock(&spec->pcm_mutex); + if (spec->active_streams) { + ret = -EBUSY; + goto unlock; + } + + if (spec->indep_hp_enabled != select) { + spec->indep_hp_enabled = select; + if (spec->indep_hp_enabled) + spec->multiout.hp_out_nid[0] = 0; + else + spec->multiout.hp_out_nid[0] = spec->alt_dac_nid; + ret = 1; + } + unlock: + mutex_unlock(&spec->pcm_mutex); + return ret; +} + +static const struct snd_kcontrol_new indep_hp_ctl = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Independent HP", + .info = indep_hp_info, + .get = indep_hp_get, + .put = indep_hp_put, +}; + + +static int create_indep_hp_ctls(struct hda_codec *codec) +{ + struct hda_gen_spec *spec = codec->spec; + + if (!spec->indep_hp) + return 0; + if (!spec->multiout.hp_out_nid[0]) { + spec->indep_hp = 0; + return 0; + } + + spec->indep_hp_enabled = false; + spec->alt_dac_nid = spec->multiout.hp_out_nid[0]; + if (!snd_hda_gen_add_kctl(spec, NULL, &indep_hp_ctl)) + return -ENOMEM; + return 0; +} + /* * channel mode enum control */ @@ -2903,6 +2977,9 @@ int snd_hda_gen_parse_auto_config(struct hda_codec *codec, if (err < 0) return err; err = create_speaker_out_ctls(codec); + if (err < 0) + return err; + err = create_indep_hp_ctls(codec); if (err < 0) return err; err = create_shared_input(codec); @@ -3057,8 +3134,16 @@ static int playback_pcm_open(struct hda_pcm_stream *hinfo, struct snd_pcm_substream *substream) { struct hda_gen_spec *spec = codec->spec; - return snd_hda_multi_out_analog_open(codec, &spec->multiout, substream, + int err; + + mutex_lock(&spec->pcm_mutex); + err = snd_hda_multi_out_analog_open(codec, + &spec->multiout, substream, hinfo); + if (!err) + spec->active_streams |= 1 << STREAM_MULTI_OUT; + mutex_unlock(&spec->pcm_mutex); + return err; } static int playback_pcm_prepare(struct hda_pcm_stream *hinfo, @@ -3080,6 +3165,44 @@ static int playback_pcm_cleanup(struct hda_pcm_stream *hinfo, return snd_hda_multi_out_analog_cleanup(codec, &spec->multiout); } +static int playback_pcm_close(struct hda_pcm_stream *hinfo, + struct hda_codec *codec, + struct snd_pcm_substream *substream) +{ + struct hda_gen_spec *spec = codec->spec; + mutex_lock(&spec->pcm_mutex); + spec->active_streams &= ~(1 << STREAM_MULTI_OUT); + mutex_unlock(&spec->pcm_mutex); + return 0; +} + +static int alt_playback_pcm_open(struct hda_pcm_stream *hinfo, + struct hda_codec *codec, + struct snd_pcm_substream *substream) +{ + struct hda_gen_spec *spec = codec->spec; + int err = 0; + + mutex_lock(&spec->pcm_mutex); + if (!spec->indep_hp_enabled) + err = -EBUSY; + else + spec->active_streams |= 1 << STREAM_INDEP_HP; + mutex_unlock(&spec->pcm_mutex); + return err; +} + +static int alt_playback_pcm_close(struct hda_pcm_stream *hinfo, + struct hda_codec *codec, + struct snd_pcm_substream *substream) +{ + struct hda_gen_spec *spec = codec->spec; + mutex_lock(&spec->pcm_mutex); + spec->active_streams &= ~(1 << STREAM_INDEP_HP); + mutex_unlock(&spec->pcm_mutex); + return 0; +} + /* * Digital out */ @@ -3154,6 +3277,7 @@ static const struct hda_pcm_stream pcm_analog_playback = { /* NID is set in build_pcms */ .ops = { .open = playback_pcm_open, + .close = playback_pcm_close, .prepare = playback_pcm_prepare, .cleanup = playback_pcm_cleanup }, @@ -3171,6 +3295,10 @@ static const struct hda_pcm_stream pcm_analog_alt_playback = { .channels_min = 2, .channels_max = 2, /* NID is set in build_pcms */ + .ops = { + .open = alt_playback_pcm_open, + .close = alt_playback_pcm_close + }, }; static const struct hda_pcm_stream pcm_analog_alt_capture = { diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h index 85d138fc10b3..5c1569c69888 100644 --- a/sound/pci/hda/hda_generic.h +++ b/sound/pci/hda/hda_generic.h @@ -65,6 +65,9 @@ struct automic_entry { unsigned int attr; /* pin attribute (INPUT_PIN_ATTR_*) */ }; +/* active stream id */ +enum { STREAM_MULTI_OUT, STREAM_INDEP_HP }; + struct hda_gen_spec { char stream_name_analog[32]; /* analog PCM stream */ const struct hda_pcm_stream *stream_analog_playback; @@ -76,6 +79,10 @@ struct hda_gen_spec { const struct hda_pcm_stream *stream_digital_playback; const struct hda_pcm_stream *stream_digital_capture; + /* PCM */ + unsigned int active_streams; + struct mutex pcm_mutex; + /* playback */ struct hda_multi_out multiout; /* playback set-up * max_channels, dacs must be set @@ -150,6 +157,8 @@ struct hda_gen_spec { unsigned int inv_dmic_split:1; /* inverted dmic w/a for conexant */ unsigned int own_eapd_ctl:1; /* set EAPD by own function */ unsigned int vmaster_mute_enum:1; /* add vmaster mute mode enum */ + unsigned int indep_hp:1; /* independent HP supported */ + unsigned int indep_hp_enabled:1; /* independent HP enabled */ /* for virtual master */ hda_nid_t vmaster_nid;