参照元†
- struct snd_soc_card *card
- struct snd_kcontrol *kcontrol
- int mux
- struct soc_enum *e
返り値†
/* test and update the power status of a mux widget */
static int soc_dapm_mux_update_power(struct snd_soc_card *card,
struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
{
struct snd_soc_dapm_path *path;
int found = 0;
bool connect;
lockdep_assert_held(&card->dapm_mutex);
/* find dapm widget path assoc with kcontrol */
dapm_kcontrol_for_each_path(path, kcontrol) {
found = 1;
/* we now need to match the string in the enum to the path */
if (!(strcmp(path->name, e->texts[mux])))
connect = true;
else
connect = false;
soc_dapm_connect_path(path, connect, "mux update");
}
if (found)
dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
return found;
}
コメント†