diff options
Diffstat (limited to 'sound/soc/soc-dapm.c')
| -rw-r--r-- | sound/soc/soc-dapm.c | 257 |
1 files changed, 172 insertions, 85 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 1790f83ee665..81c4052c127c 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -32,6 +32,7 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> +#include <linux/async.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/bitops.h> @@ -125,17 +126,17 @@ static inline struct snd_soc_dapm_widget *dapm_cnew_widget( /** * snd_soc_dapm_set_bias_level - set the bias level for the system - * @card: audio device + * @dapm: DAPM context * @level: level to configure * * Configure the bias (power) levels for the SoC audio device. * * Returns 0 for success else error. */ -static int snd_soc_dapm_set_bias_level(struct snd_soc_card *card, - struct snd_soc_dapm_context *dapm, +static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level) { + struct snd_soc_card *card = dapm->card; int ret = 0; switch (level) { @@ -365,9 +366,20 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, struct snd_soc_dapm_widget *w) { int i, ret = 0; - size_t name_len; + size_t name_len, prefix_len; struct snd_soc_dapm_path *path; - struct snd_card *card = dapm->codec->card->snd_card; + struct snd_card *card = dapm->card->snd_card; + const char *prefix; + + if (dapm->codec) + prefix = dapm->codec->name_prefix; + else + prefix = NULL; + + if (prefix) + prefix_len = strlen(prefix) + 1; + else + prefix_len = 0; /* add kcontrol */ for (i = 0; i < w->num_kcontrols; i++) { @@ -396,8 +408,15 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, switch (w->id) { default: + /* The control will get a prefix from + * the control creation process but + * we're also using the same prefix + * for widgets so cut the prefix off + * the front of the widget name. + */ snprintf(path->long_name, name_len, "%s %s", - w->name, w->kcontrols[i].name); + w->name + prefix_len, + w->kcontrols[i].name); break; case snd_soc_dapm_mixer_named_ctl: snprintf(path->long_name, name_len, "%s", @@ -408,7 +427,7 @@ static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, path->long_name[name_len - 1] = '\0'; path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, - path->long_name); + path->long_name, prefix); ret = snd_ctl_add(card, path->kcontrol); if (ret < 0) { dev_err(dapm->dev, @@ -429,7 +448,9 @@ static int dapm_new_mux(struct snd_soc_dapm_context *dapm, { struct snd_soc_dapm_path *path = NULL; struct snd_kcontrol *kcontrol; - struct snd_card *card = dapm->codec->card->snd_card; + struct snd_card *card = dapm->card->snd_card; + const char *prefix; + size_t prefix_len; int ret = 0; if (!w->num_kcontrols) { @@ -437,7 +458,22 @@ static int dapm_new_mux(struct snd_soc_dapm_context *dapm, return -EINVAL; } - kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name); + if (dapm->codec) + prefix = dapm->codec->name_prefix; + else + prefix = NULL; + + if (prefix) + prefix_len = strlen(prefix) + 1; + else + prefix_len = 0; + + /* The control will get a prefix from the control creation + * process but we're also using the same prefix for widgets so + * cut the prefix off the front of the widget name. + */ + kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name + prefix_len, + prefix); ret = snd_ctl_add(card, kcontrol); if (ret < 0) @@ -479,7 +515,7 @@ static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) */ static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) { - int level = snd_power_get_state(widget->dapm->codec->card->snd_card); + int level = snd_power_get_state(widget->dapm->card->snd_card); switch (level) { case SNDRV_CTL_POWER_D3hot: @@ -734,10 +770,23 @@ static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) static int dapm_seq_compare(struct snd_soc_dapm_widget *a, struct snd_soc_dapm_widget *b, - int sort[]) + bool power_up) { + int *sort; + + if (power_up) + sort = dapm_up_seq; + else + sort = dapm_down_seq; + if (sort[a->id] != sort[b->id]) return sort[a->id] - sort[b->id]; + if (a->subseq != b->subseq) { + if (power_up) + return a->subseq - b->subseq; + else + return b->subseq - a->subseq; + } if (a->reg != b->reg) return a->reg - b->reg; if (a->dapm != b->dapm) @@ -749,12 +798,12 @@ static int dapm_seq_compare(struct snd_soc_dapm_widget *a, /* Insert a widget in order into a DAPM power sequence. */ static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, struct list_head *list, - int sort[]) + bool power_up) { struct snd_soc_dapm_widget *w; list_for_each_entry(w, list, power_list) - if (dapm_seq_compare(new_widget, w, sort) < 0) { + if (dapm_seq_compare(new_widget, w, power_up) < 0) { list_add_tail(&new_widget->power_list, &w->power_list); return; } @@ -865,26 +914,42 @@ static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, * handled. */ static void dapm_seq_run(struct snd_soc_dapm_context *dapm, - struct list_head *list, int event, int sort[]) + struct list_head *list, int event, bool power_up) { struct snd_soc_dapm_widget *w, *n; LIST_HEAD(pending); int cur_sort = -1; + int cur_subseq = -1; int cur_reg = SND_SOC_NOPM; struct snd_soc_dapm_context *cur_dapm = NULL; - int ret; + int ret, i; + int *sort; + + if (power_up) + sort = dapm_up_seq; + else + sort = dapm_down_seq; list_for_each_entry_safe(w, n, list, power_list) { ret = 0; /* Do we need to apply any queued changes? */ if (sort[w->id] != cur_sort || w->reg != cur_reg || - w->dapm != cur_dapm) { + w->dapm != cur_dapm || w->subseq != cur_subseq) { if (!list_empty(&pending)) dapm_seq_run_coalesced(cur_dapm, &pending); + if (cur_dapm && cur_dapm->seq_notifier) { + for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) + if (sort[i] == cur_sort) + cur_dapm->seq_notifier(cur_dapm, + i, + cur_subseq); + } + INIT_LIST_HEAD(&pending); cur_sort = -1; + cur_subseq = -1; cur_reg = SND_SOC_NOPM; cur_dapm = NULL; } @@ -929,6 +994,7 @@ static void dapm_seq_run(struct snd_soc_dapm_context *dapm, default: /* Queue it up for application */ cur_sort = sort[w->id]; + cur_subseq = w->subseq; cur_reg = w->reg; cur_dapm = w->dapm; list_move(&w->power_list, &pending); @@ -942,6 +1008,13 @@ static void dapm_seq_run(struct snd_soc_dapm_context *dapm, if (!list_empty(&pending)) dapm_seq_run_coalesced(cur_dapm, &pending); + + if (cur_dapm && cur_dapm->seq_notifier) { + for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) + if (sort[i] == cur_sort) + cur_dapm->seq_notifier(cur_dapm, + i, cur_subseq); + } } static void dapm_widget_update(struct snd_soc_dapm_context *dapm) @@ -977,7 +1050,62 @@ static void dapm_widget_update(struct snd_soc_dapm_context *dapm) } } +/* Async callback run prior to DAPM sequences - brings to _PREPARE if + * they're changing state. + */ +static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) +{ + struct snd_soc_dapm_context *d = data; + int ret; + if (d->dev_power && d->bias_level == SND_SOC_BIAS_OFF) { + ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); + if (ret != 0) + dev_err(d->dev, + "Failed to turn on bias: %d\n", ret); + } + + /* If we're changing to all on or all off then prepare */ + if ((d->dev_power && d->bias_level == SND_SOC_BIAS_STANDBY) || + (!d->dev_power && d->bias_level == SND_SOC_BIAS_ON)) { + ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); + if (ret != 0) + dev_err(d->dev, + "Failed to prepare bias: %d\n", ret); + } +} + +/* Async callback run prior to DAPM sequences - brings to their final + * state. + */ +static void dapm_post_sequence_async(void *data, async_cookie_t cookie) +{ + struct snd_soc_dapm_context *d = data; + int ret; + + /* If we just powered the last thing off drop to standby bias */ + if (d->bias_level == SND_SOC_BIAS_PREPARE && !d->dev_power) { + ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); + if (ret != 0) + dev_err(d->dev, "Failed to apply standby bias: %d\n", + ret); + } + + /* If we're in standby and can support bias off then do that */ + if (d->bias_level == SND_SOC_BIAS_STANDBY && d->idle_bias_off) { + ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); + if (ret != 0) + dev_err(d->dev, "Failed to turn off bias: %d\n", ret); + } + + /* If we just powered up then move to active bias */ + if (d->bias_level == SND_SOC_BIAS_PREPARE && d->dev_power) { + ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); + if (ret != 0) + dev_err(d->dev, "Failed to apply active bias: %d\n", + ret); + } +} /* * Scan each dapm widget for complete audio path. @@ -990,12 +1118,12 @@ static void dapm_widget_update(struct snd_soc_dapm_context *dapm) */ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) { - struct snd_soc_card *card = dapm->codec->card; + struct snd_soc_card *card = dapm->card; struct snd_soc_dapm_widget *w; struct snd_soc_dapm_context *d; LIST_HEAD(up_list); LIST_HEAD(down_list); - int ret = 0; + LIST_HEAD(async_domain); int power; trace_snd_soc_dapm_start(card); @@ -1010,10 +1138,10 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) list_for_each_entry(w, &card->widgets, list) { switch (w->id) { case snd_soc_dapm_pre: - dapm_seq_insert(w, &down_list, dapm_down_seq); + dapm_seq_insert(w, &down_list, false); break; case snd_soc_dapm_post: - dapm_seq_insert(w, &up_list, dapm_up_seq); + dapm_seq_insert(w, &up_list, true); break; default: @@ -1033,9 +1161,9 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) trace_snd_soc_dapm_widget_power(w, power); if (power) - dapm_seq_insert(w, &up_list, dapm_up_seq); + dapm_seq_insert(w, &up_list, true); else - dapm_seq_insert(w, &down_list, dapm_down_seq); + dapm_seq_insert(w, &down_list, false); w->power = power; break; @@ -1073,65 +1201,25 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) } } - list_for_each_entry(d, &dapm->card->dapm_list, list) { - if (d->dev_power && d->bias_level == SND_SOC_BIAS_OFF) { - ret = snd_soc_dapm_set_bias_level(card, d, - SND_SOC_BIAS_STANDBY); - if (ret != 0) - dev_err(d->dev, - "Failed to turn on bias: %d\n", ret); - } - - /* If we're changing to all on or all off then prepare */ - if ((d->dev_power && d->bias_level == SND_SOC_BIAS_STANDBY) || - (!d->dev_power && d->bias_level == SND_SOC_BIAS_ON)) { - ret = snd_soc_dapm_set_bias_level(card, d, - SND_SOC_BIAS_PREPARE); - if (ret != 0) - dev_err(d->dev, - "Failed to prepare bias: %d\n", ret); - } - } + /* Run all the bias changes in parallel */ + list_for_each_entry(d, &dapm->card->dapm_list, list) + async_schedule_domain(dapm_pre_sequence_async, d, + &async_domain); + async_synchronize_full_domain(&async_domain); /* Power down widgets first; try to avoid amplifying pops. */ - dapm_seq_run(dapm, &down_list, event, dapm_down_seq); + dapm_seq_run(dapm, &down_list, event, false); dapm_widget_update(dapm); /* Now power up. */ - dapm_seq_run(dapm, &up_list, event, dapm_up_seq); - - list_for_each_entry(d, &dapm->card->dapm_list, list) { - /* If we just powered the last thing off drop to standby bias */ - if (d->bias_level == SND_SOC_BIAS_PREPARE && !d->dev_power) { - ret = snd_soc_dapm_set_bias_level(card, d, - SND_SOC_BIAS_STANDBY); - if (ret != 0) - dev_err(d->dev, - "Failed to apply standby bias: %d\n", - ret); - } + dapm_seq_run(dapm, &up_list, event, true); - /* If we're in standby and can support bias off then do that */ - if (d->bias_level == SND_SOC_BIAS_STANDBY && - d->idle_bias_off) { - ret = snd_soc_dapm_set_bias_level(card, d, - SND_SOC_BIAS_OFF); - if (ret != 0) - dev_err(d->dev, - "Failed to turn off bias: %d\n", ret); - } - - /* If we just powered up then move to active bias */ - if (d->bias_level == SND_SOC_BIAS_PREPARE && d->dev_power) { - ret = snd_soc_dapm_set_bias_level(card, d, - SND_SOC_BIAS_ON); - if (ret != 0) - dev_err(d->dev, - "Failed to apply active bias: %d\n", - ret); - } - } + /* Run all the bias changes in parallel */ + list_for_each_entry(d, &dapm->card->dapm_list, list) + async_schedule_domain(dapm_post_sequence_async, d, + &async_domain); + async_synchronize_full_domain(&async_domain); pop_dbg(dapm->dev, card->pop_time, "DAPM sequencing finished, waiting %dms\n", card->pop_time); @@ -1189,7 +1277,7 @@ static ssize_t dapm_widget_power_read_file(struct file *file, if (p->connect) ret += snprintf(buf + ret, PAGE_SIZE - ret, - " in %s %s\n", + " in \"%s\" \"%s\"\n", p->name ? p->name : "static", p->source->name); } @@ -1199,7 +1287,7 @@ static ssize_t dapm_widget_power_read_file(struct file *file, if (p->connect) ret += snprintf(buf + ret, PAGE_SIZE - ret, - " out %s %s\n", + " out \"%s\" \"%s\"\n", p->name ? p->name : "static", p->sink->name); } @@ -1464,7 +1552,7 @@ static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, char prefixed_source[80]; int ret = 0; - if (dapm->codec->name_prefix) { + if (dapm->codec && dapm->codec->name_prefix) { snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", dapm->codec->name_prefix, route->sink); sink = prefixed_sink; @@ -2114,14 +2202,14 @@ int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, return -ENOMEM; name_len = strlen(widget->name) + 1; - if (dapm->codec->name_prefix) + if (dapm->codec && dapm->codec->name_prefix) name_len += 1 + strlen(dapm->codec->name_prefix); w->name = kmalloc(name_len, GFP_KERNEL); if (w->name == NULL) { kfree(w); return -ENOMEM; } - if (dapm->codec->name_prefix) + if (dapm->codec && dapm->codec->name_prefix) snprintf(w->name, name_len, "%s %s", dapm->codec->name_prefix, widget->name); else @@ -2226,7 +2314,6 @@ int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, mutex_unlock(&codec->mutex); return 0; } -EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event); /** * snd_soc_dapm_enable_pin - enable pin. @@ -2393,7 +2480,7 @@ static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) if (w->dapm != dapm) continue; if (w->power) { - dapm_seq_insert(w, &down_list, dapm_down_seq); + dapm_seq_insert(w, &down_list, false); w->power = 0; powerdown = 1; } @@ -2403,9 +2490,9 @@ static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) * standby. */ if (powerdown) { - snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_PREPARE); - dapm_seq_run(dapm, &down_list, 0, dapm_down_seq); - snd_soc_dapm_set_bias_level(NULL, dapm, SND_SOC_BIAS_STANDBY); + snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); + dapm_seq_run(dapm, &down_list, 0, false); + snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); } } @@ -2418,7 +2505,7 @@ void snd_soc_dapm_shutdown(struct snd_soc_card *card) list_for_each_entry(codec, &card->codec_dev_list, list) { soc_dapm_shutdown_codec(&codec->dapm); - snd_soc_dapm_set_bias_level(card, &codec->dapm, SND_SOC_BIAS_OFF); + snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); } } |