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ASoC: Factor out per-widget DAPM power checks 

The indentation is getting a little deep. Should be straight code motion,
no functional changes.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2011-09-20 22:22:32 +01:00
parent de02d0786d
commit 7c81beb048
1 changed files with 60 additions and 52 deletions
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112
sound/soc/soc-dapm.c
View File

@ -1191,6 +1191,65 @@ static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
}
}
static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
struct list_head *up_list,
struct list_head *down_list)
{
struct snd_soc_dapm_context *d;
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:
if (!w->power_check)
break;
if (!w->force)
power = w->power_check(w);
else
power = 1;
if (power) {
d = w->dapm;
/* 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 (w->power == power)
break;
trace_snd_soc_dapm_widget_power(w, power);
if (power)
dapm_seq_insert(w, up_list, true);
else
dapm_seq_insert(w, down_list, false);
w->power = power;
break;
}
}
/*
* Scan each dapm widget for complete audio path.
* A complete path is a route that has valid endpoints i.e.:-
@ -1209,7 +1268,6 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
LIST_HEAD(down_list);
LIST_HEAD(async_domain);
enum snd_soc_bias_level bias;
int power;
trace_snd_soc_dapm_start(card);
@ -1228,57 +1286,7 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
* 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;
default:
if (!w->power_check)
continue;
if (!w->force)
power = w->power_check(w);
else
power = 1;
if (power) {
d = w->dapm;
/* 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 (w->power == power)
continue;
trace_snd_soc_dapm_widget_power(w, power);
if (power)
dapm_seq_insert(w, &up_list, true);
else
dapm_seq_insert(w, &down_list, false);
w->power = power;
break;
}
dapm_power_one_widget(w, &up_list, &down_list);
}
/* If there are no DAPM widgets then try to figure out power from the