diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index 8da3c2409060..055242e69dc3 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -432,6 +432,11 @@ enum snd_soc_dapm_type { snd_soc_dapm_dai, /* link to DAI structure */ }; +enum snd_soc_dapm_subclass { + SND_SOC_DAPM_CLASS_INIT = 0, + SND_SOC_DAPM_CLASS_PCM = 1, +}; + /* * DAPM audio route definition. * diff --git a/include/sound/soc.h b/include/sound/soc.h index 70de2f82e872..66fd9bc9789d 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -805,6 +805,7 @@ struct snd_soc_card { struct list_head list; struct mutex mutex; + struct mutex dapm_mutex; bool instantiated; diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index a6da20a72d43..4a145cb43018 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3126,6 +3126,7 @@ int snd_soc_register_card(struct snd_soc_card *card) INIT_LIST_HEAD(&card->dapm_dirty); card->instantiated = 0; mutex_init(&card->mutex); + mutex_init(&card->dapm_mutex); mutex_lock(&client_mutex); list_add(&card->list, &card_list); diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 6241490fff30..78aa19257143 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -1949,6 +1949,8 @@ static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, */ int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) { + int ret; + /* * Suppress early reports (eg, jacks syncing their state) to avoid * silly DAPM runs during card startup. @@ -1956,7 +1958,10 @@ int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) if (!dapm->card || !dapm->card->instantiated) return 0; - return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); + mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM); + ret = dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); + mutex_unlock(&dapm->card->dapm_mutex); + return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); @@ -2122,6 +2127,7 @@ int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, { int i, ret; + mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); for (i = 0; i < num; i++) { ret = snd_soc_dapm_add_route(dapm, route); if (ret < 0) { @@ -2131,6 +2137,7 @@ int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, } route++; } + mutex_unlock(&dapm->card->dapm_mutex); return 0; } @@ -2203,12 +2210,14 @@ int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, int i, err; int ret = 0; + mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); for (i = 0; i < num; i++) { err = snd_soc_dapm_weak_route(dapm, route); if (err) ret = err; route++; } + mutex_unlock(&dapm->card->dapm_mutex); return ret; } @@ -2227,6 +2236,8 @@ int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) struct snd_soc_dapm_widget *w; unsigned int val; + mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); + list_for_each_entry(w, &dapm->card->widgets, list) { if (w->new) @@ -2236,8 +2247,10 @@ int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) w->kcontrols = kzalloc(w->num_kcontrols * sizeof(struct snd_kcontrol *), GFP_KERNEL); - if (!w->kcontrols) + if (!w->kcontrols) { + mutex_unlock(&dapm->card->dapm_mutex); return -ENOMEM; + } } switch(w->id) { @@ -2277,6 +2290,7 @@ int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) } dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); + mutex_unlock(&dapm->card->dapm_mutex); return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); @@ -2336,6 +2350,7 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); struct snd_soc_dapm_widget *widget = wlist->widgets[0]; struct snd_soc_codec *codec = widget->codec; + struct snd_soc_card *card = codec->card; struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; unsigned int reg = mc->reg; @@ -2362,7 +2377,7 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, /* old connection must be powered down */ connect = invert ? 1 : 0; - mutex_lock(&codec->mutex); + mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM); change = snd_soc_test_bits(widget->codec, reg, mask, val); if (change) { @@ -2384,7 +2399,7 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, } } - mutex_unlock(&codec->mutex); + mutex_unlock(&card->dapm_mutex); return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); @@ -2433,6 +2448,7 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); struct snd_soc_dapm_widget *widget = wlist->widgets[0]; struct snd_soc_codec *codec = widget->codec; + struct snd_soc_card *card = codec->card; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int val, mux, change; unsigned int mask, bitmask; @@ -2453,7 +2469,7 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, mask |= (bitmask - 1) << e->shift_r; } - mutex_lock(&codec->mutex); + mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM); change = snd_soc_test_bits(widget->codec, e->reg, mask, val); if (change) { @@ -2475,7 +2491,7 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, } } - mutex_unlock(&codec->mutex); + mutex_unlock(&card->dapm_mutex); return change; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); @@ -2512,6 +2528,7 @@ int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); struct snd_soc_dapm_widget *widget = wlist->widgets[0]; struct snd_soc_codec *codec = widget->codec; + struct snd_soc_card *card = codec->card; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; int change; @@ -2521,7 +2538,7 @@ int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, if (ucontrol->value.enumerated.item[0] >= e->max) return -EINVAL; - mutex_lock(&codec->mutex); + mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM); change = widget->value != ucontrol->value.enumerated.item[0]; if (change) { @@ -2534,7 +2551,7 @@ int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, } } - mutex_unlock(&codec->mutex); + mutex_unlock(&card->dapm_mutex); return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); @@ -2599,6 +2616,7 @@ int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol); struct snd_soc_dapm_widget *widget = wlist->widgets[0]; struct snd_soc_codec *codec = widget->codec; + struct snd_soc_card *card = codec->card; struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int val, mux, change; unsigned int mask; @@ -2617,7 +2635,7 @@ int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, mask |= e->mask << e->shift_r; } - mutex_lock(&codec->mutex); + mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM); change = snd_soc_test_bits(widget->codec, e->reg, mask, val); if (change) { @@ -2639,7 +2657,7 @@ int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, } } - mutex_unlock(&codec->mutex); + mutex_unlock(&card->dapm_mutex); return change; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); @@ -2676,12 +2694,12 @@ int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); const char *pin = (const char *)kcontrol->private_value; - mutex_lock(&card->mutex); + mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM); ucontrol->value.integer.value[0] = snd_soc_dapm_get_pin_status(&card->dapm, pin); - mutex_unlock(&card->mutex); + mutex_unlock(&card->dapm_mutex); return 0; } @@ -2699,17 +2717,16 @@ int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); const char *pin = (const char *)kcontrol->private_value; - mutex_lock(&card->mutex); + mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM); if (ucontrol->value.integer.value[0]) snd_soc_dapm_enable_pin(&card->dapm, pin); else snd_soc_dapm_disable_pin(&card->dapm, pin); + mutex_unlock(&card->dapm_mutex); + snd_soc_dapm_sync(&card->dapm); - - mutex_unlock(&card->mutex); - return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); @@ -2827,6 +2844,7 @@ int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, struct snd_soc_dapm_widget *w; int i; + 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); if (!w) { @@ -2837,6 +2855,7 @@ int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, } widget++; } + mutex_unlock(&dapm->card->dapm_mutex); return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); @@ -2991,11 +3010,11 @@ static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, struct snd_soc_dai *dai, int event) { - struct snd_soc_codec *codec = rtd->codec; + struct snd_soc_card *card = rtd->card; - mutex_lock(&codec->mutex); - soc_dapm_stream_event(&codec->dapm, stream, dai, event); - mutex_unlock(&codec->mutex); + mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM); + soc_dapm_stream_event(&card->dapm, stream, dai, event); + mutex_unlock(&card->dapm_mutex); return 0; }