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Commit d5d1e0be authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Mark Brown
Browse files

ASoC: Move DAPM widget debugfs entry creation to snd_soc_dapm_new_widgets 



Currently debugfs entries for a DAPM widgets are only added in
snd_soc_dapm_debugfs_init. If a widget is added later (for example in the
dai_link's probe callback) it will not show up in debugfs.
This patch moves the creation of the widget debugfs entry to
snd_soc_dapm_new_widgets where it will be added after the widget has been
properly instantiated.

As a side-effect this will also reduce the number of times the DAPM widget list
is iterated during a card's instantiation.

Since it is possible that snd_soc_dapm_new_widgets is invoked form the codecs or
cards probe callbacks, the creation of the debugfs dapm directory has to be
moved before these are called.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Acked-by: default avatarLiam Girdwood <lrg@ti.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 8eecaf62

sound/soc/soc-core.c

+7 −6
Original line number Diff line number Diff line
@@ -1493,6 +1493,8 @@ static int soc_probe_codec(struct snd_soc_card *card, 
	if (!try_module_get(codec->dev->driver->owner))

		return -ENODEV;



	soc_init_codec_debugfs(codec);



	if (driver->probe) {

		ret = driver->probe(codec);

		if (ret < 0) {
@@ -1513,8 +1515,6 @@ static int soc_probe_codec(struct snd_soc_card *card, 
		snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,

					driver->num_dapm_routes);



	soc_init_codec_debugfs(codec);



	/* mark codec as probed and add to card codec list */

	codec->probed = 1;

	list_add(&codec->card_list, &card->codec_dev_list);
@@ -1523,6 +1523,7 @@ static int soc_probe_codec(struct snd_soc_card *card, 
	return 0;



err_probe:

	soc_cleanup_codec_debugfs(codec);

	module_put(codec->dev->driver->owner);



	return ret;
@@ -1873,6 +1874,10 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card) 
	card->dapm.card = card;

	list_add(&card->dapm.list, &card->dapm_list);



#ifdef CONFIG_DEBUG_FS

	snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);

#endif



#ifdef CONFIG_PM_SLEEP

	/* deferred resume work */

	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
@@ -1919,10 +1924,6 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card) 
		snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,

					card->num_dapm_routes);



#ifdef CONFIG_DEBUG_FS

	snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);

#endif



	snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),

		 "%s",  card->name);

	snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),

sound/soc/soc-dapm.c

+23 −12
Original line number Diff line number Diff line
@@ -1257,7 +1257,6 @@ static const struct file_operations dapm_bias_fops = { 
void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,

	struct dentry *parent)

{

	struct snd_soc_dapm_widget *w;

	struct dentry *d;



	dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
@@ -1274,10 +1273,15 @@ void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, 
	if (!d)

		dev_warn(dapm->dev,

			 "ASoC: Failed to create bias level debugfs file\n");

}



	list_for_each_entry(w, &dapm->card->widgets, list) {

		if (!w->name || w->dapm != dapm)

			continue;

static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)

{

	struct snd_soc_dapm_context *dapm = w->dapm;

	struct dentry *d;



	if (!dapm->debugfs_dapm || !w->name)

		return;



	d = debugfs_create_file(w->name, 0444,

				dapm->debugfs_dapm, w,
@@ -1287,12 +1291,17 @@ void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, 
			"ASoC: Failed to create %s debugfs file\n",

			w->name);

}

}



#else

void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,

	struct dentry *parent)

{

}



static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)

{

}



#endif



/* test and update the power status of a mux widget */
@@ -1765,6 +1774,8 @@ int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) 
		}



		w->new = 1;



		dapm_debugfs_add_widget(w);

	}



	dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);