The topology core needs to be able to create individual widget controls at runtime and driver init. Add a regular locked and unlocked API calls to facilitate this requirement.

The unlocked call is used by the topology core during component driver probing where the card dapm_mutex is held by the ASoC core and the locked version at non component driver probe time.

Signed-off-by: Liam Girdwood liam.r.girdwood@linux.intel.com --- sound/soc/soc-dapm.c | 34 ++++++++++++++++++++++++++-------- 1 file changed, 26 insertions(+), 8 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index defe0f0..62406d8 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -52,8 +52,8 @@ static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm, const char *control, int (*connected)(struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink)); -static struct snd_soc_dapm_widget * -snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, +struct snd_soc_dapm_widget * +snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_widget *widget);

/* dapm power sequences - make this per codec in the future */ @@ -342,7 +342,8 @@ static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,

data->value = template.on_val;

- data->widget = snd_soc_dapm_new_control(widget->dapm, + data->widget = + snd_soc_dapm_new_control_unlocked(widget->dapm, &template); if (!data->widget) { kfree(data); @@ -3053,8 +3054,25 @@ int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);

-static struct snd_soc_dapm_widget * +struct snd_soc_dapm_widget * snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, + const struct snd_soc_dapm_widget *widget) +{ + struct snd_soc_dapm_widget *w; + + mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); + w = snd_soc_dapm_new_control_unlocked(dapm, widget); + if (!w) + dev_err(dapm->dev, + "ASoC: Failed to create DAPM control %s\n", + widget->name); + + mutex_unlock(&dapm->card->dapm_mutex); + return w; +} + +struct snd_soc_dapm_widget * +snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, const struct snd_soc_dapm_widget *widget) { struct snd_soc_dapm_widget *w; @@ -3199,7 +3217,7 @@ int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,

mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); for (i = 0; i < num; i++) { - w = snd_soc_dapm_new_control(dapm, widget); + w = snd_soc_dapm_new_control_unlocked(dapm, widget); if (!w) { dev_err(dapm->dev, "ASoC: Failed to create DAPM control %s\n", @@ -3437,7 +3455,7 @@ int snd_soc_dapm_new_pcm(struct snd_soc_card *card,

dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);

- w = snd_soc_dapm_new_control(&card->dapm, &template); + w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template); if (!w) { dev_err(card->dev, "ASoC: Failed to create %s widget\n", link_name); @@ -3488,7 +3506,7 @@ int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, dev_dbg(dai->dev, "ASoC: adding %s widget\n", template.name);

- w = snd_soc_dapm_new_control(dapm, &template); + w = snd_soc_dapm_new_control_unlocked(dapm, &template); if (!w) { dev_err(dapm->dev, "ASoC: Failed to create %s widget\n", dai->driver->playback.stream_name); @@ -3507,7 +3525,7 @@ int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, dev_dbg(dai->dev, "ASoC: adding %s widget\n", template.name);

- w = snd_soc_dapm_new_control(dapm, &template); + w = snd_soc_dapm_new_control_unlocked(dapm, &template); if (!w) { dev_err(dapm->dev, "ASoC: Failed to create %s widget\n", dai->driver->capture.stream_name);