#include <trace/events/asoc.h>
+#define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
+
/* dapm power sequences - make this per codec in the future */
static int dapm_up_seq[] = {
[snd_soc_dapm_pre] = 0,
kfree(buf);
}
+static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
+{
+ return !list_empty(&w->dirty);
+}
+
+void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
+{
+ if (!dapm_dirty_widget(w)) {
+ dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
+ w->name, reason);
+ list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
+ }
+}
+EXPORT_SYMBOL_GPL(dapm_mark_dirty);
+
/* create a new dapm widget */
static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
const struct snd_soc_dapm_widget *_widget)
return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
}
+/* get snd_card from DAPM context */
+static inline struct snd_card *dapm_get_snd_card(
+ struct snd_soc_dapm_context *dapm)
+{
+ if (dapm->codec)
+ return dapm->codec->card->snd_card;
+ else if (dapm->platform)
+ return dapm->platform->card->snd_card;
+ else
+ BUG();
+
+ /* unreachable */
+ return NULL;
+}
+
+/* get soc_card from DAPM context */
+static inline struct snd_soc_card *dapm_get_soc_card(
+ struct snd_soc_dapm_context *dapm)
+{
+ if (dapm->codec)
+ return dapm->codec->card;
+ else if (dapm->platform)
+ return dapm->platform->card;
+ else
+ BUG();
+
+ /* unreachable */
+ return NULL;
+}
+
+static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
+{
+ if (w->codec)
+ return snd_soc_read(w->codec, reg);
+ else if (w->platform)
+ return snd_soc_platform_read(w->platform, reg);
+
+ dev_err(w->dapm->dev, "no valid widget read method\n");
+ return -1;
+}
+
+static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
+{
+ if (w->codec)
+ return snd_soc_write(w->codec, reg, val);
+ else if (w->platform)
+ return snd_soc_platform_write(w->platform, reg, val);
+
+ dev_err(w->dapm->dev, "no valid widget write method\n");
+ return -1;
+}
+
+static int soc_widget_update_bits(struct snd_soc_dapm_widget *w,
+ unsigned short reg, unsigned int mask, unsigned int value)
+{
+ int 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 (ret < 0)
+ return ret;
+ }
+
+ return change;
+}
+
/**
* snd_soc_dapm_set_bias_level - set the bias level for the system
* @dapm: DAPM context
struct snd_soc_card *card = dapm->card;
int ret = 0;
- switch (level) {
- case SND_SOC_BIAS_ON:
- dev_dbg(dapm->dev, "Setting full bias\n");
- break;
- case SND_SOC_BIAS_PREPARE:
- dev_dbg(dapm->dev, "Setting bias prepare\n");
- break;
- case SND_SOC_BIAS_STANDBY:
- dev_dbg(dapm->dev, "Setting standby bias\n");
- break;
- case SND_SOC_BIAS_OFF:
- dev_dbg(dapm->dev, "Setting bias off\n");
- break;
- default:
- dev_err(dapm->dev, "Setting invalid bias %d\n", level);
- return -EINVAL;
- }
-
trace_snd_soc_bias_level_start(card, level);
if (card && card->set_bias_level)
- ret = card->set_bias_level(card, level);
- if (ret == 0) {
- if (dapm->codec && dapm->codec->driver->set_bias_level)
- ret = dapm->codec->driver->set_bias_level(dapm->codec, level);
+ ret = card->set_bias_level(card, dapm, level);
+ if (ret != 0)
+ goto out;
+
+ if (dapm->codec) {
+ if (dapm->codec->driver->set_bias_level)
+ ret = dapm->codec->driver->set_bias_level(dapm->codec,
+ level);
else
dapm->bias_level = level;
}
- if (ret == 0) {
- if (card && card->set_bias_level_post)
- ret = card->set_bias_level_post(card, level);
- }
+ if (ret != 0)
+ goto out;
+ if (card && card->set_bias_level_post)
+ ret = card->set_bias_level_post(card, dapm, level);
+out:
trace_snd_soc_bias_level_done(card, level);
return ret;
unsigned int mask = (1 << fls(max)) - 1;
unsigned int invert = mc->invert;
- val = snd_soc_read(w->codec, reg);
+ val = soc_widget_read(w, reg);
val = (val >> shift) & mask;
if ((invert && !val) || (!invert && val))
int val, item, bitmask;
for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
- ;
- val = snd_soc_read(w->codec, e->reg);
+ ;
+ val = soc_widget_read(w, e->reg);
item = (val >> e->shift_l) & (bitmask - 1);
p->connect = 0;
w->kcontrol_news[i].private_value;
int val, item;
- val = snd_soc_read(w->codec, e->reg);
+ val = soc_widget_read(w, e->reg);
val = (val >> e->shift_l) & e->mask;
for (item = 0; item < e->max; item++) {
if (val == e->values[item])
}
}
break;
- /* does not effect routing - always connected */
+ /* does not affect routing - always connected */
case snd_soc_dapm_pga:
case snd_soc_dapm_out_drv:
case snd_soc_dapm_output:
case snd_soc_dapm_supply:
case snd_soc_dapm_aif_in:
case snd_soc_dapm_aif_out:
- p->connect = 1;
- break;
- /* does effect routing - dynamically connected */
case snd_soc_dapm_hp:
case snd_soc_dapm_mic:
case snd_soc_dapm_spk:
case snd_soc_dapm_line:
+ p->connect = 1;
+ break;
+ /* does affect routing - dynamically connected */
case snd_soc_dapm_pre:
case snd_soc_dapm_post:
p->connect = 0;
if (path->name != (char *)w->kcontrol_news[i].name)
continue;
+ if (w->kcontrols[i]) {
+ path->kcontrol = w->kcontrols[i];
+ continue;
+ }
+
wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
sizeof(struct snd_soc_dapm_widget *),
wlist = kzalloc(wlistsize, GFP_KERNEL);
name + prefix_len, prefix);
ret = snd_ctl_add(card, kcontrol);
if (ret < 0) {
- dev_err(dapm->dev,
- "asoc: failed to add kcontrol %s\n", w->name);
+ dev_err(dapm->dev, "failed to add kcontrol %s: %d\n",
+ w->name, ret);
kfree(wlist);
return ret;
}
struct snd_soc_dapm_path *path;
int con = 0;
+ if (widget->outputs >= 0)
+ return widget->outputs;
+
+ DAPM_UPDATE_STAT(widget, path_checks);
+
if (widget->id == snd_soc_dapm_supply)
return 0;
switch (widget->id) {
case snd_soc_dapm_adc:
case snd_soc_dapm_aif_out:
- if (widget->active)
- return snd_soc_dapm_suspend_check(widget);
+ if (widget->active) {
+ widget->outputs = snd_soc_dapm_suspend_check(widget);
+ return widget->outputs;
+ }
default:
break;
}
if (widget->connected) {
/* connected pin ? */
- if (widget->id == snd_soc_dapm_output && !widget->ext)
- return snd_soc_dapm_suspend_check(widget);
+ if (widget->id == snd_soc_dapm_output && !widget->ext) {
+ widget->outputs = snd_soc_dapm_suspend_check(widget);
+ return widget->outputs;
+ }
/* connected jack or spk ? */
- if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk ||
- (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources)))
- return snd_soc_dapm_suspend_check(widget);
+ if (widget->id == snd_soc_dapm_hp ||
+ widget->id == snd_soc_dapm_spk ||
+ (widget->id == snd_soc_dapm_line &&
+ !list_empty(&widget->sources))) {
+ widget->outputs = snd_soc_dapm_suspend_check(widget);
+ return widget->outputs;
+ }
}
list_for_each_entry(path, &widget->sinks, list_source) {
+ DAPM_UPDATE_STAT(widget, neighbour_checks);
+
+ if (path->weak)
+ continue;
+
if (path->walked)
continue;
}
}
+ widget->outputs = con;
+
return con;
}
struct snd_soc_dapm_path *path;
int con = 0;
+ if (widget->inputs >= 0)
+ return widget->inputs;
+
+ DAPM_UPDATE_STAT(widget, path_checks);
+
if (widget->id == snd_soc_dapm_supply)
return 0;
switch (widget->id) {
case snd_soc_dapm_dac:
case snd_soc_dapm_aif_in:
- if (widget->active)
- return snd_soc_dapm_suspend_check(widget);
+ if (widget->active) {
+ widget->inputs = snd_soc_dapm_suspend_check(widget);
+ return widget->inputs;
+ }
default:
break;
}
if (widget->connected) {
/* connected pin ? */
- if (widget->id == snd_soc_dapm_input && !widget->ext)
- return snd_soc_dapm_suspend_check(widget);
+ if (widget->id == snd_soc_dapm_input && !widget->ext) {
+ widget->inputs = snd_soc_dapm_suspend_check(widget);
+ return widget->inputs;
+ }
/* connected VMID/Bias for lower pops */
- if (widget->id == snd_soc_dapm_vmid)
- return snd_soc_dapm_suspend_check(widget);
+ if (widget->id == snd_soc_dapm_vmid) {
+ widget->inputs = snd_soc_dapm_suspend_check(widget);
+ return widget->inputs;
+ }
/* connected jack ? */
if (widget->id == snd_soc_dapm_mic ||
- (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks)))
- return snd_soc_dapm_suspend_check(widget);
+ (widget->id == snd_soc_dapm_line &&
+ !list_empty(&widget->sinks))) {
+ widget->inputs = snd_soc_dapm_suspend_check(widget);
+ return widget->inputs;
+ }
+
}
list_for_each_entry(path, &widget->sources, list_sink) {
+ DAPM_UPDATE_STAT(widget, neighbour_checks);
+
+ if (path->weak)
+ continue;
+
if (path->walked)
continue;
}
}
+ widget->inputs = con;
+
return con;
}
else
val = w->off_val;
- snd_soc_update_bits(w->codec, -(w->reg + 1),
+ soc_widget_update_bits(w, -(w->reg + 1),
w->mask << w->shift, val << w->shift);
return 0;
}
EXPORT_SYMBOL_GPL(dapm_reg_event);
+static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
+{
+ if (w->power_checked)
+ return w->new_power;
+
+ if (w->force)
+ w->new_power = 1;
+ else
+ w->new_power = w->power_check(w);
+
+ w->power_checked = true;
+
+ return w->new_power;
+}
+
/* Generic check to see if a widget should be powered.
*/
static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
{
int in, out;
+ DAPM_UPDATE_STAT(w, power_checks);
+
in = is_connected_input_ep(w);
dapm_clear_walk(w->dapm);
out = is_connected_output_ep(w);
{
int in;
+ DAPM_UPDATE_STAT(w, power_checks);
+
if (w->active) {
in = is_connected_input_ep(w);
dapm_clear_walk(w->dapm);
{
int out;
+ DAPM_UPDATE_STAT(w, power_checks);
+
if (w->active) {
out = is_connected_output_ep(w);
dapm_clear_walk(w->dapm);
static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
{
struct snd_soc_dapm_path *path;
- int power = 0;
+
+ DAPM_UPDATE_STAT(w, power_checks);
/* Check if one of our outputs is connected */
list_for_each_entry(path, &w->sinks, list_source) {
+ DAPM_UPDATE_STAT(w, neighbour_checks);
+
+ if (path->weak)
+ continue;
+
if (path->connected &&
!path->connected(path->source, path->sink))
continue;
if (!path->sink)
continue;
- if (path->sink->force) {
- power = 1;
- break;
- }
-
- if (path->sink->power_check &&
- path->sink->power_check(path->sink)) {
- power = 1;
- break;
- }
+ if (dapm_widget_power_check(path->sink))
+ return 1;
}
dapm_clear_walk(w->dapm);
- return power;
+ return 0;
+}
+
+static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
+{
+ return 1;
}
static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
}
if (reg >= 0) {
+ /* Any widget will do, they should all be updating the
+ * same register.
+ */
+ w = list_first_entry(pending, struct snd_soc_dapm_widget,
+ power_list);
+
pop_dbg(dapm->dev, card->pop_time,
"pop test : Applying 0x%x/0x%x to %x in %dms\n",
value, mask, reg, card->pop_time);
pop_wait(card->pop_time);
- snd_soc_update_bits(dapm->codec, reg, mask, value);
+ soc_widget_update_bits(w, reg, mask, value);
}
list_for_each_entry(w, pending, power_list) {
INIT_LIST_HEAD(&pending);
cur_sort = -1;
- cur_subseq = -1;
+ cur_subseq = INT_MIN;
cur_reg = SND_SOC_NOPM;
cur_dapm = NULL;
}
struct snd_soc_dapm_context *d = data;
int ret;
- if (d->dev_power && d->bias_level == SND_SOC_BIAS_OFF) {
+ /* 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) {
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)) {
+ /* Prepare for a STADDBY->ON or ON->STANDBY transition */
+ if (d->bias_level != d->target_bias_level) {
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
if (ret != 0)
dev_err(d->dev,
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) {
+ if (d->bias_level == SND_SOC_BIAS_PREPARE &&
+ (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
+ d->target_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 apply standby bias: %d\n",
}
/* 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) {
+ if (d->bias_level == SND_SOC_BIAS_STANDBY &&
+ d->target_bias_level == SND_SOC_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) {
+ if (d->bias_level == SND_SOC_BIAS_PREPARE &&
+ d->target_bias_level == SND_SOC_BIAS_ON) {
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",
}
}
+static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
+ bool power, bool connect)
+{
+ /* If a connection is being made or broken then that update
+ * will have marked the peer dirty, otherwise the widgets are
+ * not connected and this update has no impact. */
+ if (!connect)
+ return;
+
+ /* If the peer is already in the state we're moving to then we
+ * won't have an impact on it. */
+ if (power != peer->power)
+ dapm_mark_dirty(peer, "peer state change");
+}
+
+static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
+ struct list_head *up_list,
+ struct list_head *down_list)
+{
+ struct snd_soc_dapm_path *path;
+
+ if (w->power == power)
+ return;
+
+ trace_snd_soc_dapm_widget_power(w, power);
+
+ /* If we changed our power state perhaps our neigbours changed
+ * also.
+ */
+ list_for_each_entry(path, &w->sources, list_sink) {
+ if (path->source) {
+ dapm_widget_set_peer_power(path->source, power,
+ path->connect);
+ }
+ }
+ switch (w->id) {
+ case snd_soc_dapm_supply:
+ /* Supplies can't affect their outputs, only their inputs */
+ break;
+ default:
+ list_for_each_entry(path, &w->sinks, list_source) {
+ if (path->sink) {
+ dapm_widget_set_peer_power(path->sink, power,
+ path->connect);
+ }
+ }
+ break;
+ }
+
+ if (power)
+ dapm_seq_insert(w, up_list, true);
+ else
+ dapm_seq_insert(w, down_list, false);
+
+ w->power = power;
+}
+
+static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
+ struct list_head *up_list,
+ struct list_head *down_list)
+{
+ int power;
+
+ switch (w->id) {
+ case snd_soc_dapm_pre:
+ dapm_seq_insert(w, down_list, false);
+ break;
+ case snd_soc_dapm_post:
+ dapm_seq_insert(w, up_list, true);
+ break;
+
+ default:
+ power = dapm_widget_power_check(w);
+
+ dapm_widget_set_power(w, power, up_list, down_list);
+ break;
+ }
+}
+
/*
* Scan each dapm widget for complete audio path.
* A complete path is a route that has valid endpoints i.e.:-
LIST_HEAD(up_list);
LIST_HEAD(down_list);
LIST_HEAD(async_domain);
- int power;
+ enum snd_soc_bias_level bias;
trace_snd_soc_dapm_start(card);
- list_for_each_entry(d, &card->dapm_list, list)
- if (d->n_widgets || d->codec == NULL)
- d->dev_power = 0;
-
- /* Check which widgets we need to power and store them in
- * lists indicating if they should be powered up or down.
- */
- list_for_each_entry(w, &card->widgets, list) {
- switch (w->id) {
- case snd_soc_dapm_pre:
- dapm_seq_insert(w, &down_list, false);
- break;
- case snd_soc_dapm_post:
- dapm_seq_insert(w, &up_list, true);
- break;
+ list_for_each_entry(d, &card->dapm_list, list) {
+ if (d->n_widgets || d->codec == NULL) {
+ if (d->idle_bias_off)
+ d->target_bias_level = SND_SOC_BIAS_OFF;
+ else
+ d->target_bias_level = SND_SOC_BIAS_STANDBY;
+ }
+ }
- default:
- if (!w->power_check)
- continue;
+ memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
- if (!w->force)
- power = w->power_check(w);
- else
- power = 1;
- if (power)
- w->dapm->dev_power = 1;
+ list_for_each_entry(w, &card->widgets, list) {
+ w->power_checked = false;
+ w->inputs = -1;
+ w->outputs = -1;
+ }
- if (w->power == power)
- continue;
+ /* Check which widgets we need to power and store them in
+ * lists indicating if they should be powered up or down. We
+ * only check widgets that have been flagged as dirty but note
+ * that new widgets may be added to the dirty list while we
+ * iterate.
+ */
+ list_for_each_entry(w, &card->dapm_dirty, dirty) {
+ dapm_power_one_widget(w, &up_list, &down_list);
+ }
- trace_snd_soc_dapm_widget_power(w, power);
+ list_for_each_entry(w, &card->widgets, list) {
+ list_del_init(&w->dirty);
- if (power)
- dapm_seq_insert(w, &up_list, true);
- else
- dapm_seq_insert(w, &down_list, false);
+ if (w->power) {
+ d = w->dapm;
- w->power = power;
- break;
+ /* 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.
+ */
+ switch (w->id) {
+ case snd_soc_dapm_supply:
+ case snd_soc_dapm_micbias:
+ if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
+ d->target_bias_level = SND_SOC_BIAS_STANDBY;
+ break;
+ default:
+ d->target_bias_level = SND_SOC_BIAS_ON;
+ break;
+ }
}
+
}
/* If there are no DAPM widgets then try to figure out power from the
switch (event) {
case SND_SOC_DAPM_STREAM_START:
case SND_SOC_DAPM_STREAM_RESUME:
- dapm->dev_power = 1;
+ dapm->target_bias_level = SND_SOC_BIAS_ON;
break;
case SND_SOC_DAPM_STREAM_STOP:
- dapm->dev_power = !!dapm->codec->active;
+ if (dapm->codec->active)
+ dapm->target_bias_level = SND_SOC_BIAS_ON;
+ else
+ dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
break;
case SND_SOC_DAPM_STREAM_SUSPEND:
- dapm->dev_power = 0;
+ dapm->target_bias_level = SND_SOC_BIAS_STANDBY;
break;
case SND_SOC_DAPM_STREAM_NOP:
- switch (dapm->bias_level) {
- case SND_SOC_BIAS_STANDBY:
- case SND_SOC_BIAS_OFF:
- dapm->dev_power = 0;
- break;
- default:
- dapm->dev_power = 1;
- break;
- }
+ dapm->target_bias_level = dapm->bias_level;
break;
default:
break;
}
}
- /* Force all contexts in the card to the same bias state */
- power = 0;
+ /* Force all contexts in the card to the same bias state if
+ * they're not ground referenced.
+ */
+ bias = SND_SOC_BIAS_OFF;
list_for_each_entry(d, &card->dapm_list, list)
- if (d->dev_power)
- power = 1;
+ if (d->target_bias_level > bias)
+ bias = d->target_bias_level;
list_for_each_entry(d, &card->dapm_list, list)
- d->dev_power = power;
+ if (!d->idle_bias_off)
+ d->target_bias_level = bias;
+ trace_snd_soc_dapm_walk_done(card);
/* Run all the bias changes in parallel */
list_for_each_entry(d, &dapm->card->dapm_list, list)
found = 1;
/* we now need to match the string in the enum to the path */
- if (!(strcmp(path->name, e->texts[mux])))
+ if (!(strcmp(path->name, e->texts[mux]))) {
path->connect = 1; /* new connection */
- else
+ dapm_mark_dirty(path->source, "mux connection");
+ } else {
+ if (path->connect)
+ dapm_mark_dirty(path->source,
+ "mux disconnection");
path->connect = 0; /* old connection must be powered down */
+ }
}
- if (found)
+ if (found) {
+ dapm_mark_dirty(widget, "mux change");
dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
+ }
return 0;
}
/* found, now check type */
found = 1;
path->connect = connect;
- break;
+ dapm_mark_dirty(path->source, "mixer connection");
}
- if (found)
+ if (found) {
+ dapm_mark_dirty(widget, "mixer update");
dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
+ }
return 0;
}
w->connected = status;
if (status == 0)
w->force = 0;
+ dapm_mark_dirty(w, "pin configuration");
return 0;
}
*/
int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
{
+ /*
+ * Suppress early reports (eg, jacks syncing their state) to avoid
+ * silly DAPM runs during card startup.
+ */
+ if (!dapm->card || !dapm->card->instantiated)
+ return 0;
+
return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
+static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
+ const struct snd_soc_dapm_route *route)
+{
+ struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
+ route->source,
+ true);
+ struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
+ route->sink,
+ true);
+ struct snd_soc_dapm_path *path;
+ int count = 0;
+
+ if (!source) {
+ dev_err(dapm->dev, "Unable to find source %s for weak route\n",
+ route->source);
+ return -ENODEV;
+ }
+
+ if (!sink) {
+ dev_err(dapm->dev, "Unable to find sink %s for weak route\n",
+ route->sink);
+ return -ENODEV;
+ }
+
+ if (route->control || route->connected)
+ dev_warn(dapm->dev, "Ignoring control for weak route %s->%s\n",
+ route->source, route->sink);
+
+ list_for_each_entry(path, &source->sinks, list_source) {
+ if (path->sink == sink) {
+ path->weak = 1;
+ count++;
+ }
+ }
+
+ if (count == 0)
+ dev_err(dapm->dev, "No path found for weak route %s->%s\n",
+ route->source, route->sink);
+ if (count > 1)
+ dev_warn(dapm->dev, "%d paths found for weak route %s->%s\n",
+ count, route->source, route->sink);
+
+ return 0;
+}
+
+/**
+ * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
+ * @dapm: DAPM context
+ * @route: audio routes
+ * @num: number of routes
+ *
+ * Mark existing routes matching those specified in the passed array
+ * as being weak, meaning that they are ignored for the purpose of
+ * power decisions. The main intended use case is for sidetone paths
+ * which couple audio between other independent paths if they are both
+ * active in order to make the combination work better at the user
+ * level but which aren't intended to be "used".
+ *
+ * Note that CODEC drivers should not use this as sidetone type paths
+ * can frequently also be used as bypass paths.
+ */
+int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
+ const struct snd_soc_dapm_route *route, int num)
+{
+ int i, err;
+ int ret = 0;
+
+ for (i = 0; i < num; i++) {
+ err = snd_soc_dapm_weak_route(dapm, route);
+ if (err)
+ ret = err;
+ route++;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
+
/**
* snd_soc_dapm_new_widgets - add new dapm widgets
* @dapm: DAPM context
case snd_soc_dapm_switch:
case snd_soc_dapm_mixer:
case snd_soc_dapm_mixer_named_ctl:
- w->power_check = dapm_generic_check_power;
dapm_new_mixer(w);
break;
case snd_soc_dapm_mux:
case snd_soc_dapm_virt_mux:
case snd_soc_dapm_value_mux:
- w->power_check = dapm_generic_check_power;
dapm_new_mux(w);
break;
- case snd_soc_dapm_adc:
- case snd_soc_dapm_aif_out:
- w->power_check = dapm_adc_check_power;
- break;
- case snd_soc_dapm_dac:
- case snd_soc_dapm_aif_in:
- w->power_check = dapm_dac_check_power;
- break;
case snd_soc_dapm_pga:
case snd_soc_dapm_out_drv:
- w->power_check = dapm_generic_check_power;
dapm_new_pga(w);
break;
- case snd_soc_dapm_input:
- case snd_soc_dapm_output:
- case snd_soc_dapm_micbias:
- case snd_soc_dapm_spk:
- case snd_soc_dapm_hp:
- case snd_soc_dapm_mic:
- case snd_soc_dapm_line:
- w->power_check = dapm_generic_check_power;
- break;
- case snd_soc_dapm_supply:
- w->power_check = dapm_supply_check_power;
- case snd_soc_dapm_vmid:
- case snd_soc_dapm_pre:
- case snd_soc_dapm_post:
+ default:
break;
}
/* Read the initial power state from the device */
if (w->reg >= 0) {
- val = snd_soc_read(w->codec, w->reg);
+ val = soc_widget_read(w, w->reg);
val &= 1 << w->shift;
if (w->invert)
val = !val;
w->new = 1;
+ dapm_mark_dirty(w, "new widget");
dapm_debugfs_add_widget(w);
}
else
snprintf(w->name, name_len, "%s", widget->name);
+ switch (w->id) {
+ case snd_soc_dapm_switch:
+ case snd_soc_dapm_mixer:
+ case snd_soc_dapm_mixer_named_ctl:
+ w->power_check = dapm_generic_check_power;
+ break;
+ case snd_soc_dapm_mux:
+ case snd_soc_dapm_virt_mux:
+ case snd_soc_dapm_value_mux:
+ w->power_check = dapm_generic_check_power;
+ break;
+ case snd_soc_dapm_adc:
+ case snd_soc_dapm_aif_out:
+ w->power_check = dapm_adc_check_power;
+ break;
+ case snd_soc_dapm_dac:
+ case snd_soc_dapm_aif_in:
+ w->power_check = dapm_dac_check_power;
+ break;
+ case snd_soc_dapm_pga:
+ case snd_soc_dapm_out_drv:
+ case snd_soc_dapm_input:
+ case snd_soc_dapm_output:
+ case snd_soc_dapm_micbias:
+ case snd_soc_dapm_spk:
+ case snd_soc_dapm_hp:
+ case snd_soc_dapm_mic:
+ case snd_soc_dapm_line:
+ w->power_check = dapm_generic_check_power;
+ break;
+ case snd_soc_dapm_supply:
+ w->power_check = dapm_supply_check_power;
+ break;
+ default:
+ w->power_check = dapm_always_on_check_power;
+ break;
+ }
+
dapm->n_widgets++;
w->dapm = dapm;
w->codec = dapm->codec;
+ w->platform = dapm->platform;
INIT_LIST_HEAD(&w->sources);
INIT_LIST_HEAD(&w->sinks);
INIT_LIST_HEAD(&w->list);
+ INIT_LIST_HEAD(&w->dirty);
list_add(&w->list, &dapm->card->widgets);
/* machine layer set ups unconnected pins and insertions */
{
if (!w->sname || w->dapm != dapm)
continue;
- dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n",
+ 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)) {
+ dapm_mark_dirty(w, "stream event");
switch(event) {
case SND_SOC_DAPM_STREAM_START:
w->active = 1;
}
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);
}
/**
dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin);
w->connected = 1;
w->force = 1;
+ dapm_mark_dirty(w, "force enable");
return 0;
}
/**
* snd_soc_dapm_free - free dapm resources
- * @card: SoC device
+ * @dapm: DAPM context
*
* Free all dapm widgets and resources.
*/
projects / ~andy / linux / blobdiff