From 024dc078558e64e4cebc62c096285430a61dd10e Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 9 Oct 2011 11:52:05 +0100 Subject: [PATCH] ASoC: Cache connected input and output recursions The number of connected input and output endpoints for a given widgets can't change during a DAPM run so there is no need to redo the recursion through branches of the tree we've already visited. Doing this on one of my test systems gives an improvement of: Power Path Neighbour Before: 63 607 731 After: 63 141 181 which scales up well as more widgets are involved in paths. Signed-off-by: Mark Brown --- include/sound/soc-dapm.h | 2 ++ sound/soc/soc-dapm.c | 60 ++++++++++++++++++++++++++++++---------- 2 files changed, 47 insertions(+), 15 deletions(-) diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index e2853daf802c..bfefc16137ea 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -495,6 +495,8 @@ struct snd_soc_dapm_widget { /* used during DAPM updates */ struct list_head power_list; struct list_head dirty; + int inputs; + int outputs; }; struct snd_soc_dapm_update { diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 22fb7355b134..258326b031cf 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -665,6 +665,9 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) struct snd_soc_dapm_path *path; int con = 0; + if (widget->outputs >= 0) + return widget->outputs; + DAPM_UPDATE_STAT(widget, path_checks); if (widget->id == snd_soc_dapm_supply) @@ -673,21 +676,29 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) switch (widget->id) { case snd_soc_dapm_adc: case snd_soc_dapm_aif_out: - if (widget->active) - return snd_soc_dapm_suspend_check(widget); + if (widget->active) { + widget->outputs = snd_soc_dapm_suspend_check(widget); + return widget->outputs; + } default: break; } if (widget->connected) { /* connected pin ? */ - if (widget->id == snd_soc_dapm_output && !widget->ext) - return snd_soc_dapm_suspend_check(widget); + if (widget->id == snd_soc_dapm_output && !widget->ext) { + widget->outputs = snd_soc_dapm_suspend_check(widget); + return widget->outputs; + } /* connected jack or spk ? */ - if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || - (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) - return snd_soc_dapm_suspend_check(widget); + if (widget->id == snd_soc_dapm_hp || + widget->id == snd_soc_dapm_spk || + (widget->id == snd_soc_dapm_line && + !list_empty(&widget->sources))) { + widget->outputs = snd_soc_dapm_suspend_check(widget); + return widget->outputs; + } } list_for_each_entry(path, &widget->sinks, list_source) { @@ -705,6 +716,8 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) } } + widget->outputs = con; + return con; } @@ -717,6 +730,9 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) struct snd_soc_dapm_path *path; int con = 0; + if (widget->inputs >= 0) + return widget->inputs; + DAPM_UPDATE_STAT(widget, path_checks); if (widget->id == snd_soc_dapm_supply) @@ -726,25 +742,35 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) switch (widget->id) { case snd_soc_dapm_dac: case snd_soc_dapm_aif_in: - if (widget->active) - return snd_soc_dapm_suspend_check(widget); + if (widget->active) { + widget->inputs = snd_soc_dapm_suspend_check(widget); + return widget->inputs; + } default: break; } if (widget->connected) { /* connected pin ? */ - if (widget->id == snd_soc_dapm_input && !widget->ext) - return snd_soc_dapm_suspend_check(widget); + if (widget->id == snd_soc_dapm_input && !widget->ext) { + widget->inputs = snd_soc_dapm_suspend_check(widget); + return widget->inputs; + } /* connected VMID/Bias for lower pops */ - if (widget->id == snd_soc_dapm_vmid) - return snd_soc_dapm_suspend_check(widget); + if (widget->id == snd_soc_dapm_vmid) { + widget->inputs = snd_soc_dapm_suspend_check(widget); + return widget->inputs; + } /* connected jack ? */ if (widget->id == snd_soc_dapm_mic || - (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) - return snd_soc_dapm_suspend_check(widget); + (widget->id == snd_soc_dapm_line && + !list_empty(&widget->sinks))) { + widget->inputs = snd_soc_dapm_suspend_check(widget); + return widget->inputs; + } + } list_for_each_entry(path, &widget->sources, list_sink) { @@ -762,6 +788,8 @@ static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) } } + widget->inputs = con; + return con; } @@ -1335,6 +1363,8 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) list_for_each_entry(w, &card->widgets, list) { w->power_checked = false; + w->inputs = -1; + w->outputs = -1; } /* Check which widgets we need to power and store them in -- 2.20.1