From 7c81beb048b49a9fe73254c6e6396e4b1937cdb9 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 20 Sep 2011 22:22:32 +0100 Subject: [PATCH] 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 --- sound/soc/soc-dapm.c | 112 +++++++++++++++++++++++++++------------------------ 1 file changed, 60 insertions(+), 52 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 6a1e13e..84d1d79 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -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 -- 2.7.4