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-rw-r--r--sound/soc/soc-dapm.c257
1 files changed, 172 insertions, 85 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 1790f83..81c4052 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);
}
}
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