diff options
| -rw-r--r-- | Documentation/sound/alsa/soc/dapm.txt | 1 | ||||
| -rw-r--r-- | include/sound/soc-dapm.h | 7 | ||||
| -rw-r--r-- | sound/soc/soc-dapm.c | 44 |
3 files changed, 46 insertions, 6 deletions
diff --git a/Documentation/sound/alsa/soc/dapm.txt b/Documentation/sound/alsa/soc/dapm.txt index 9e6763264a2..9ac842be9b4 100644 --- a/Documentation/sound/alsa/soc/dapm.txt +++ b/Documentation/sound/alsa/soc/dapm.txt @@ -62,6 +62,7 @@ Audio DAPM widgets fall into a number of types:- o Mic - Mic (and optional Jack) o Line - Line Input/Output (and optional Jack) o Speaker - Speaker + o Supply - Power or clock supply widget used by other widgets. o Pre - Special PRE widget (exec before all others) o Post - Special POST widget (exec after all others) diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index 839a97b6326..533f9f25649 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -154,12 +154,16 @@ .shift = wshift, .invert = winvert, \ .event = wevent, .event_flags = wflags} -/* generic register modifier widget */ +/* generic widgets */ #define SND_SOC_DAPM_REG(wid, wname, wreg, wshift, wmask, won_val, woff_val) \ { .id = wid, .name = wname, .kcontrols = NULL, .num_kcontrols = 0, \ .reg = -((wreg) + 1), .shift = wshift, .mask = wmask, \ .on_val = won_val, .off_val = woff_val, .event = dapm_reg_event, \ .event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD} +#define SND_SOC_DAPM_SUPPLY(wname, wreg, wshift, winvert, wevent, wflags) \ +{ .id = snd_soc_dapm_supply, .name = wname, .reg = wreg, \ + .shift = wshift, .invert = winvert, .event = wevent, \ + .event_flags = wflags} /* dapm kcontrol types */ #define SOC_DAPM_SINGLE(xname, reg, shift, max, invert) \ @@ -308,6 +312,7 @@ enum snd_soc_dapm_type { snd_soc_dapm_vmid, /* codec bias/vmid - to minimise pops */ snd_soc_dapm_pre, /* machine specific pre widget - exec first */ snd_soc_dapm_post, /* machine specific post widget - exec last */ + snd_soc_dapm_supply, /* power/clock supply */ }; /* 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: |