* dynamic configuration of codec internal audio paths and active
* DACs/ADCs.
* o Platform power domain - can support external components i.e. amps and
- * mic/meadphone insertion events.
+ * mic/headphone insertion events.
* o Automatic Mic Bias support
* o Jack insertion power event initiation - e.g. hp insertion will enable
* sinks, dacs, etc
- * o Delayed powerdown of audio susbsystem to reduce pops between a quick
+ * o Delayed power down of audio subsystem to reduce pops between a quick
* device reopen.
*
- * Todo:
- * o DAPM power change sequencing - allow for configurable per
- * codec sequences.
- * o Support for analogue bias optimisation.
- * o Support for reduced codec oversampling rates.
- * o Support for reduced codec bias currents.
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/jiffies.h>
#include <linux/debugfs.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
static int dapm_up_seq[] = {
[snd_soc_dapm_pre] = 0,
[snd_soc_dapm_supply] = 1,
+ [snd_soc_dapm_regulator_supply] = 1,
[snd_soc_dapm_micbias] = 2,
[snd_soc_dapm_aif_in] = 3,
[snd_soc_dapm_aif_out] = 3,
[snd_soc_dapm_value_mux] = 9,
[snd_soc_dapm_aif_in] = 10,
[snd_soc_dapm_aif_out] = 10,
+ [snd_soc_dapm_regulator_supply] = 11,
[snd_soc_dapm_supply] = 11,
[snd_soc_dapm_post] = 12,
};
return NULL;
}
+static void dapm_reset(struct snd_soc_card *card)
+{
+ struct snd_soc_dapm_widget *w;
+
+ memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
+
+ list_for_each_entry(w, &card->widgets, list) {
+ w->power_checked = false;
+ w->inputs = -1;
+ w->outputs = -1;
+ }
+}
+
static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
{
if (w->codec)
static int soc_widget_update_bits(struct snd_soc_dapm_widget *w,
unsigned short reg, unsigned int mask, unsigned int value)
{
- int change;
+ bool change;
unsigned int old, new;
int ret;
- ret = soc_widget_read(w, reg);
- if (ret < 0)
- return ret;
-
- old = ret;
- new = (old & ~mask) | (value & mask);
- change = old != new;
- if (change) {
- ret = soc_widget_write(w, reg, new);
+ if (w->codec && w->codec->using_regmap) {
+ ret = regmap_update_bits_check(w->codec->control_data,
+ reg, mask, value, &change);
+ if (ret != 0)
+ return ret;
+ } else {
+ ret = soc_widget_read(w, reg);
if (ret < 0)
return ret;
+
+ old = ret;
+ new = (old & ~mask) | (value & mask);
+ change = old != new;
+ if (change) {
+ ret = soc_widget_write(w, reg, new);
+ if (ret < 0)
+ return ret;
+ }
}
return change;
case snd_soc_dapm_output:
case snd_soc_dapm_adc:
case snd_soc_dapm_input:
+ case snd_soc_dapm_siggen:
case snd_soc_dapm_dac:
case snd_soc_dapm_micbias:
case snd_soc_dapm_vmid:
case snd_soc_dapm_supply:
+ case snd_soc_dapm_regulator_supply:
case snd_soc_dapm_aif_in:
case snd_soc_dapm_aif_out:
case snd_soc_dapm_hp:
DAPM_UPDATE_STAT(widget, path_checks);
- if (widget->id == snd_soc_dapm_supply)
+ switch (widget->id) {
+ case snd_soc_dapm_supply:
+ case snd_soc_dapm_regulator_supply:
return 0;
+ default:
+ break;
+ }
switch (widget->id) {
case snd_soc_dapm_adc:
DAPM_UPDATE_STAT(widget, path_checks);
- if (widget->id == snd_soc_dapm_supply)
+ switch (widget->id) {
+ case snd_soc_dapm_supply:
+ case snd_soc_dapm_regulator_supply:
return 0;
+ default:
+ break;
+ }
/* active stream ? */
switch (widget->id) {
return widget->inputs;
}
+ /* signal generator */
+ if (widget->id == snd_soc_dapm_siggen) {
+ widget->inputs = snd_soc_dapm_suspend_check(widget);
+ return widget->inputs;
+ }
}
list_for_each_entry(path, &widget->sources, list_sink) {
}
EXPORT_SYMBOL_GPL(dapm_reg_event);
+/*
+ * Handler for regulator supply widget.
+ */
+int dapm_regulator_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ return regulator_enable(w->priv);
+ else
+ return regulator_disable_deferred(w->priv, w->shift);
+}
+EXPORT_SYMBOL_GPL(dapm_regulator_event);
+
static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
{
if (w->power_checked)
/* If we're off and we're not supposed to be go into STANDBY */
if (d->bias_level == SND_SOC_BIAS_OFF &&
d->target_bias_level != SND_SOC_BIAS_OFF) {
+ if (d->dev)
+ pm_runtime_get_sync(d->dev);
+
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
if (ret != 0)
dev_err(d->dev,
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 (d->dev)
+ pm_runtime_put(d->dev);
}
/* If we just powered up then move to active bias */
}
switch (w->id) {
case snd_soc_dapm_supply:
+ case snd_soc_dapm_regulator_supply:
/* Supplies can't affect their outputs, only their inputs */
break;
default:
}
}
- memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
-
- list_for_each_entry(w, &card->widgets, list) {
- w->power_checked = false;
- w->inputs = -1;
- w->outputs = -1;
- }
+ dapm_reset(card);
/* Check which widgets we need to power and store them in
* lists indicating if they should be powered up or down. We
/* Supplies and micbiases only bring the
* context up to STANDBY as unless something
* else is active and passing audio they
- * generally don't require full power.
+ * generally don't require full power. Signal
+ * generators are virtual pins and have no
+ * power impact themselves.
*/
switch (w->id) {
+ case snd_soc_dapm_siggen:
+ break;
case snd_soc_dapm_supply:
+ case snd_soc_dapm_regulator_supply:
case snd_soc_dapm_micbias:
if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
d->target_bias_level = SND_SOC_BIAS_STANDBY;
dapm->target_bias_level = SND_SOC_BIAS_ON;
break;
case SND_SOC_DAPM_STREAM_STOP:
- if (dapm->codec->active)
+ if (dapm->codec && dapm->codec->active)
dapm->target_bias_level = SND_SOC_BIAS_ON;
else
dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
&async_domain);
async_synchronize_full_domain(&async_domain);
+ /* do we need to notify any clients that DAPM event is complete */
+ list_for_each_entry(d, &card->dapm_list, list) {
+ if (d->stream_event)
+ d->stream_event(d, event);
+ }
+
pop_dbg(dapm->dev, card->pop_time,
"DAPM sequencing finished, waiting %dms\n", card->pop_time);
pop_wait(card->pop_time);
#endif
/* test and update the power status of a mux widget */
-static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
- struct snd_kcontrol *kcontrol, int change,
- int mux, struct soc_enum *e)
+int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
+ struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
{
struct snd_soc_dapm_path *path;
int found = 0;
widget->id != snd_soc_dapm_value_mux)
return -ENODEV;
- if (!change)
- return 0;
-
/* find dapm widget path assoc with kcontrol */
list_for_each_entry(path, &widget->dapm->card->paths, list) {
if (path->kcontrol != kcontrol)
return 0;
}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
/* test and update the power status of a mixer or switch widget */
-static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
+int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
struct snd_kcontrol *kcontrol, int connect)
{
struct snd_soc_dapm_path *path;
return 0;
}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
/* show dapm widget status in sys fs */
static ssize_t dapm_widget_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct snd_soc_pcm_runtime *rtd =
- container_of(dev, struct snd_soc_pcm_runtime, dev);
+ struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
struct snd_soc_codec *codec =rtd->codec;
struct snd_soc_dapm_widget *w;
int count = 0;
case snd_soc_dapm_mixer:
case snd_soc_dapm_mixer_named_ctl:
case snd_soc_dapm_supply:
+ case snd_soc_dapm_regulator_supply:
if (w->name)
count += sprintf(buf + count, "%s: %s\n",
w->name, w->power ? "On":"Off");
case snd_soc_dapm_out_drv:
case snd_soc_dapm_input:
case snd_soc_dapm_output:
+ case snd_soc_dapm_siggen:
case snd_soc_dapm_micbias:
case snd_soc_dapm_vmid:
case snd_soc_dapm_pre:
case snd_soc_dapm_post:
case snd_soc_dapm_supply:
+ case snd_soc_dapm_regulator_supply:
case snd_soc_dapm_aif_in:
case snd_soc_dapm_aif_out:
list_add(&path->list, &dapm->card->paths);
update.val = val;
widget->dapm->update = &update;
- dapm_mixer_update_power(widget, kcontrol, connect);
+ snd_soc_dapm_mixer_update_power(widget, kcontrol, connect);
widget->dapm->update = NULL;
}
update.val = val;
widget->dapm->update = &update;
- dapm_mux_update_power(widget, kcontrol, change, mux, e);
+ snd_soc_dapm_mux_update_power(widget, kcontrol, mux, e);
widget->dapm->update = NULL;
}
widget->value = ucontrol->value.enumerated.item[0];
- dapm_mux_update_power(widget, kcontrol, change,
- widget->value, e);
+ snd_soc_dapm_mux_update_power(widget, kcontrol, widget->value, e);
}
}
update.val = val;
widget->dapm->update = &update;
- dapm_mux_update_power(widget, kcontrol, change, mux, e);
+ snd_soc_dapm_mux_update_power(widget, kcontrol, mux, e);
widget->dapm->update = NULL;
}
int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
const char *pin = (const char *)kcontrol->private_value;
- mutex_lock(&codec->mutex);
+ mutex_lock(&card->mutex);
ucontrol->value.integer.value[0] =
- snd_soc_dapm_get_pin_status(&codec->dapm, pin);
+ snd_soc_dapm_get_pin_status(&card->dapm, pin);
- mutex_unlock(&codec->mutex);
+ mutex_unlock(&card->mutex);
return 0;
}
int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
const char *pin = (const char *)kcontrol->private_value;
- mutex_lock(&codec->mutex);
+ mutex_lock(&card->mutex);
if (ucontrol->value.integer.value[0])
- snd_soc_dapm_enable_pin(&codec->dapm, pin);
+ snd_soc_dapm_enable_pin(&card->dapm, pin);
else
- snd_soc_dapm_disable_pin(&codec->dapm, pin);
+ snd_soc_dapm_disable_pin(&card->dapm, pin);
- snd_soc_dapm_sync(&codec->dapm);
+ snd_soc_dapm_sync(&card->dapm);
- mutex_unlock(&codec->mutex);
+ mutex_unlock(&card->mutex);
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
-/**
- * snd_soc_dapm_new_control - create new dapm control
- * @dapm: DAPM context
- * @widget: widget template
- *
- * Creates a new dapm control based upon the template.
- *
- * Returns 0 for success else error.
- */
-int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
- const struct snd_soc_dapm_widget *widget)
+static 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;
size_t name_len;
+ int ret;
if ((w = dapm_cnew_widget(widget)) == NULL)
- return -ENOMEM;
+ return NULL;
+
+ switch (w->id) {
+ case snd_soc_dapm_regulator_supply:
+ w->priv = devm_regulator_get(dapm->dev, w->name);
+ if (IS_ERR(w->priv)) {
+ ret = PTR_ERR(w->priv);
+ dev_err(dapm->dev, "Failed to request %s: %d\n",
+ w->name, ret);
+ return NULL;
+ }
+ break;
+ default:
+ break;
+ }
name_len = strlen(widget->name) + 1;
if (dapm->codec && dapm->codec->name_prefix)
w->name = kmalloc(name_len, GFP_KERNEL);
if (w->name == NULL) {
kfree(w);
- return -ENOMEM;
+ return NULL;
}
if (dapm->codec && dapm->codec->name_prefix)
snprintf(w->name, name_len, "%s %s",
w->power_check = dapm_generic_check_power;
break;
case snd_soc_dapm_supply:
+ case snd_soc_dapm_regulator_supply:
w->power_check = dapm_supply_check_power;
break;
default:
/* machine layer set ups unconnected pins and insertions */
w->connected = 1;
- return 0;
+ return w;
}
-EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
/**
* snd_soc_dapm_new_controls - create new dapm controls
const struct snd_soc_dapm_widget *widget,
int num)
{
- int i, ret;
+ struct snd_soc_dapm_widget *w;
+ int i;
for (i = 0; i < num; i++) {
- ret = snd_soc_dapm_new_control(dapm, widget);
- if (ret < 0) {
+ w = snd_soc_dapm_new_control(dapm, widget);
+ if (!w) {
dev_err(dapm->dev,
- "ASoC: Failed to create DAPM control %s: %d\n",
- widget->name, ret);
- return ret;
+ "ASoC: Failed to create DAPM control %s\n",
+ widget->name);
+ return -ENOMEM;
}
widget++;
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
- const char *stream, int event)
+ int stream, struct snd_soc_dai *dai,
+ int event)
{
struct snd_soc_dapm_widget *w;
+ const char *stream_name;
+
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+ stream_name = dai->driver->playback.stream_name;
+ else
+ stream_name = dai->driver->capture.stream_name;
+
+ if (!stream_name)
+ return;
list_for_each_entry(w, &dapm->card->widgets, list)
{
if (!w->sname || w->dapm != dapm)
continue;
dev_vdbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n",
- w->name, w->sname, stream, event);
- if (strstr(w->sname, stream)) {
+ w->name, w->sname, stream_name, event);
+ if (strstr(w->sname, stream_name)) {
dapm_mark_dirty(w, "stream event");
switch(event) {
case SND_SOC_DAPM_STREAM_START:
}
dapm_power_widgets(dapm, event);
-
- /* do we need to notify any clients that DAPM stream is complete */
- if (dapm->stream_event)
- dapm->stream_event(dapm, event);
}
/**
*
* Returns 0 for success else error.
*/
-int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd,
- const char *stream, int event)
+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;
- if (stream == NULL)
- return 0;
-
mutex_lock(&codec->mutex);
- soc_dapm_stream_event(&codec->dapm, stream, event);
+ soc_dapm_stream_event(&codec->dapm, stream, dai, event);
mutex_unlock(&codec->mutex);
return 0;
}
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
+static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
+ struct snd_soc_dapm_widget *w)
+{
+ struct snd_soc_dapm_path *p;
+
+ list_for_each_entry(p, &card->paths, list) {
+ if ((p->source == w) || (p->sink == w)) {
+ dev_dbg(card->dev,
+ "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
+ p->source->name, p->source->id, p->source->dapm,
+ p->sink->name, p->sink->id, p->sink->dapm);
+
+ /* Connected to something other than the codec */
+ if (p->source->dapm != p->sink->dapm)
+ return true;
+ /*
+ * Loopback connection from codec external pin to
+ * codec external pin
+ */
+ if (p->sink->id == snd_soc_dapm_input) {
+ switch (p->source->id) {
+ case snd_soc_dapm_output:
+ case snd_soc_dapm_micbias:
+ return true;
+ default:
+ break;
+ }
+ }
+ }
+ }
+
+ return false;
+}
+
+/**
+ * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
+ * @codec: The codec whose pins should be processed
+ *
+ * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
+ * which are unused. Pins are used if they are connected externally to the
+ * codec, whether that be to some other device, or a loop-back connection to
+ * the codec itself.
+ */
+void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
+{
+ struct snd_soc_card *card = codec->card;
+ struct snd_soc_dapm_context *dapm = &codec->dapm;
+ struct snd_soc_dapm_widget *w;
+
+ dev_dbg(codec->dev, "Auto NC: DAPMs: card:%p codec:%p\n",
+ &card->dapm, &codec->dapm);
+
+ list_for_each_entry(w, &card->widgets, list) {
+ if (w->dapm != dapm)
+ continue;
+ switch (w->id) {
+ case snd_soc_dapm_input:
+ case snd_soc_dapm_output:
+ case snd_soc_dapm_micbias:
+ dev_dbg(codec->dev, "Auto NC: Checking widget %s\n",
+ w->name);
+ if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
+ dev_dbg(codec->dev,
+ "... Not in map; disabling\n");
+ snd_soc_dapm_nc_pin(dapm, w->name);
+ }
+ break;
+ default:
+ break;
+ }
+ }
+}
+
/**
* snd_soc_dapm_free - free dapm resources
* @dapm: DAPM context
projects / deliverable / linux.git / blobdiff