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Commit e6b85f3c authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Add pcm_playback_hook to hda_gen_spec 



The new hook which is called at each PCM playback ops.
It can be used to control the codec-specific power-saving feature in
each codec driver.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent c2c80383

sound/pci/hda/hda_generic.c

+60 −5
Original line number Diff line number Diff line
@@ -3261,6 +3261,16 @@ EXPORT_SYMBOL_HDA(snd_hda_gen_build_controls); 
 * PCM definitions

 */



static void call_pcm_playback_hook(struct hda_pcm_stream *hinfo,

				   struct hda_codec *codec,

				   struct snd_pcm_substream *substream,

				   int action)

{

	struct hda_gen_spec *spec = codec->spec;

	if (spec->pcm_playback_hook)

		spec->pcm_playback_hook(hinfo, codec, substream, action);

}



/*

 * Analog playback callbacks

 */
@@ -3275,8 +3285,11 @@ static int playback_pcm_open(struct hda_pcm_stream *hinfo, 
	err = snd_hda_multi_out_analog_open(codec,

					    &spec->multiout, substream,

					     hinfo);

	if (!err)

	if (!err) {

		spec->active_streams |= 1 << STREAM_MULTI_OUT;

		call_pcm_playback_hook(hinfo, codec, substream,

				       HDA_GEN_PCM_ACT_OPEN);

	}

	mutex_unlock(&spec->pcm_mutex);

	return err;

}
@@ -3288,8 +3301,14 @@ static int playback_pcm_prepare(struct hda_pcm_stream *hinfo, 
				struct snd_pcm_substream *substream)

{

	struct hda_gen_spec *spec = codec->spec;

	return snd_hda_multi_out_analog_prepare(codec, &spec->multiout,

	int err;



	err = snd_hda_multi_out_analog_prepare(codec, &spec->multiout,

					       stream_tag, format, substream);

	if (!err)

		call_pcm_playback_hook(hinfo, codec, substream,

				       HDA_GEN_PCM_ACT_PREPARE);

	return err;

}



static int playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
@@ -3297,7 +3316,13 @@ static int playback_pcm_cleanup(struct hda_pcm_stream *hinfo, 
				struct snd_pcm_substream *substream)

{

	struct hda_gen_spec *spec = codec->spec;

	return snd_hda_multi_out_analog_cleanup(codec, &spec->multiout);

	int err;



	err = snd_hda_multi_out_analog_cleanup(codec, &spec->multiout);

	if (!err)

		call_pcm_playback_hook(hinfo, codec, substream,

				       HDA_GEN_PCM_ACT_CLEANUP);

	return err;

}



static int playback_pcm_close(struct hda_pcm_stream *hinfo,
@@ -3307,6 +3332,8 @@ static int playback_pcm_close(struct hda_pcm_stream *hinfo, 
	struct hda_gen_spec *spec = codec->spec;

	mutex_lock(&spec->pcm_mutex);

	spec->active_streams &= ~(1 << STREAM_MULTI_OUT);

	call_pcm_playback_hook(hinfo, codec, substream,

			       HDA_GEN_PCM_ACT_CLOSE);

	mutex_unlock(&spec->pcm_mutex);

	return 0;

}
@@ -3323,6 +3350,8 @@ static int alt_playback_pcm_open(struct hda_pcm_stream *hinfo, 
		err = -EBUSY;

	else

		spec->active_streams |= 1 << STREAM_INDEP_HP;

	call_pcm_playback_hook(hinfo, codec, substream,

			       HDA_GEN_PCM_ACT_OPEN);

	mutex_unlock(&spec->pcm_mutex);

	return err;

}
@@ -3334,10 +3363,34 @@ static int alt_playback_pcm_close(struct hda_pcm_stream *hinfo, 
	struct hda_gen_spec *spec = codec->spec;

	mutex_lock(&spec->pcm_mutex);

	spec->active_streams &= ~(1 << STREAM_INDEP_HP);

	call_pcm_playback_hook(hinfo, codec, substream,

			       HDA_GEN_PCM_ACT_CLOSE);

	mutex_unlock(&spec->pcm_mutex);

	return 0;

}



static int alt_playback_pcm_prepare(struct hda_pcm_stream *hinfo,

				    struct hda_codec *codec,

				    unsigned int stream_tag,

				    unsigned int format,

				    struct snd_pcm_substream *substream)

{

	snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);

	call_pcm_playback_hook(hinfo, codec, substream,

			       HDA_GEN_PCM_ACT_PREPARE);

	return 0;

}



static int alt_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,

				    struct hda_codec *codec,

				    struct snd_pcm_substream *substream)

{

	snd_hda_codec_cleanup_stream(codec, hinfo->nid);

	call_pcm_playback_hook(hinfo, codec, substream,

			       HDA_GEN_PCM_ACT_CLEANUP);

	return 0;

}



/*

 * Digital out

 */
@@ -3432,7 +3485,9 @@ static const struct hda_pcm_stream pcm_analog_alt_playback = { 
	/* NID is set in build_pcms */

	.ops = {

		.open = alt_playback_pcm_open,

		.close = alt_playback_pcm_close

		.close = alt_playback_pcm_close,

		.prepare = alt_playback_pcm_prepare,

		.cleanup = alt_playback_pcm_cleanup

	},

};

sound/pci/hda/hda_generic.h

+14 −0
Original line number Diff line number Diff line
@@ -69,6 +69,14 @@ struct automic_entry { 
/* active stream id */

enum { STREAM_MULTI_OUT, STREAM_INDEP_HP };



/* PCM hook action */

enum {

	HDA_GEN_PCM_ACT_OPEN,

	HDA_GEN_PCM_ACT_PREPARE,

	HDA_GEN_PCM_ACT_CLEANUP,

	HDA_GEN_PCM_ACT_CLOSE,

};



struct hda_gen_spec {

	char stream_name_analog[32];	/* analog PCM stream */

	const struct hda_pcm_stream *stream_analog_playback;
@@ -191,6 +199,12 @@ struct hda_gen_spec { 
	void (*automute_hook)(struct hda_codec *codec);

	void (*cap_sync_hook)(struct hda_codec *codec);



	/* PCM playback hook */

	void (*pcm_playback_hook)(struct hda_pcm_stream *hinfo,

				  struct hda_codec *codec,

				  struct snd_pcm_substream *substream,

				  int action);



	/* automute / autoswitch hooks */

	void (*hp_automute_hook)(struct hda_codec *codec,

				 struct hda_jack_tbl *tbl);