diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-dapm.c | 44 |
1 files changed, 39 insertions, 5 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index d3d17354e76..7847f80e96d 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -52,17 +52,19 @@ /* dapm power sequences - make this per codec in the future */ static int dapm_up_seq[] = { - snd_soc_dapm_pre, snd_soc_dapm_micbias, snd_soc_dapm_mic, - snd_soc_dapm_mux, snd_soc_dapm_value_mux, snd_soc_dapm_dac, - snd_soc_dapm_mixer, snd_soc_dapm_mixer_named_ctl, snd_soc_dapm_pga, - snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_post + snd_soc_dapm_pre, snd_soc_dapm_supply, snd_soc_dapm_micbias, + snd_soc_dapm_mic, snd_soc_dapm_mux, snd_soc_dapm_value_mux, + snd_soc_dapm_dac, snd_soc_dapm_mixer, snd_soc_dapm_mixer_named_ctl, + snd_soc_dapm_pga, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, + snd_soc_dapm_post }; static int dapm_down_seq[] = { snd_soc_dapm_pre, snd_soc_dapm_adc, snd_soc_dapm_hp, snd_soc_dapm_spk, snd_soc_dapm_pga, snd_soc_dapm_mixer_named_ctl, snd_soc_dapm_mixer, snd_soc_dapm_dac, snd_soc_dapm_mic, snd_soc_dapm_micbias, - snd_soc_dapm_mux, snd_soc_dapm_value_mux, snd_soc_dapm_post + snd_soc_dapm_mux, snd_soc_dapm_value_mux, snd_soc_dapm_supply, + snd_soc_dapm_post }; static int dapm_status = 1; @@ -165,6 +167,7 @@ static void dapm_set_path_status(struct snd_soc_dapm_widget *w, case snd_soc_dapm_dac: case snd_soc_dapm_micbias: case snd_soc_dapm_vmid: + case snd_soc_dapm_supply: p->connect = 1; break; /* does effect routing - dynamically connected */ @@ -435,6 +438,9 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) struct snd_soc_dapm_path *path; int con = 0; + if (widget->id == snd_soc_dapm_supply) + return 0; + if (widget->id == snd_soc_dapm_adc && widget->active) return 1; @@ -471,6 +477,9 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) struct snd_soc_dapm_path *path; int con = 0; + if (widget->id == snd_soc_dapm_supply) + return 0; + /* active stream ? */ if (widget->id == snd_soc_dapm_dac && widget->active) return 1; @@ -622,6 +631,26 @@ static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) } } +/* Check to see if a power supply is needed */ +static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) +{ + struct snd_soc_dapm_path *path; + int power = 0; + + /* Check if one of our outputs is connected */ + list_for_each_entry(path, &w->sinks, list_source) { + if (path->sink && path->sink->power_check && + path->sink->power_check(path->sink)) { + power = 1; + break; + } + } + + dapm_clear_walk(w->codec); + + return power; +} + /* * Scan a single DAPM widget for a complete audio path and update the * power status appropriately. @@ -752,6 +781,7 @@ static void dbg_dump_dapm(struct snd_soc_codec* codec, const char *action) case snd_soc_dapm_pga: case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: + case snd_soc_dapm_supply: if (w->name) { in = is_connected_input_ep(w); dapm_clear_walk(w->codec); @@ -880,6 +910,7 @@ static ssize_t dapm_widget_show(struct device *dev, case snd_soc_dapm_pga: case snd_soc_dapm_mixer: case snd_soc_dapm_mixer_named_ctl: + case snd_soc_dapm_supply: if (w->name) count += sprintf(buf + count, "%s: %s\n", w->name, w->power ? "On":"Off"); @@ -1044,6 +1075,7 @@ static int snd_soc_dapm_add_route(struct snd_soc_codec *codec, case snd_soc_dapm_vmid: case snd_soc_dapm_pre: case snd_soc_dapm_post: + case snd_soc_dapm_supply: list_add(&path->list, &codec->dapm_paths); list_add(&path->list_sink, &wsink->sources); list_add(&path->list_source, &wsource->sinks); @@ -1164,6 +1196,8 @@ int snd_soc_dapm_new_widgets(struct snd_soc_codec *codec) 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: |