From 91a5fca4b1987324f829efeff3bc5efb2ce6e752 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Wed, 27 Apr 2011 18:34:31 +0200 Subject: [PATCH] ASoC: Add dapm_find_widget helper This patch adds a helper function for searching DAPM widgets by name. This allows to streamline functions which operate on widgets by name. It also allows to get rid of copy'n'pasted code which was added to fallback to widgets from other contexts if the widget was not found in the current context. Signed-off-by: Lars-Peter Clausen Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- sound/soc/soc-dapm.c | 115 +++++++++++++++++-------------------------- 1 file changed, 45 insertions(+), 70 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 856471703bd..378f08adee5 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -1458,40 +1458,43 @@ static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) } } -static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, - const char *pin, int status) +static struct snd_soc_dapm_widget *dapm_find_widget( + struct snd_soc_dapm_context *dapm, const char *pin, + bool search_other_contexts) { struct snd_soc_dapm_widget *w; + struct snd_soc_dapm_widget *fallback = NULL; list_for_each_entry(w, &dapm->card->widgets, list) { - if (w->dapm != dapm) - continue; if (!strcmp(w->name, pin)) { - dev_dbg(w->dapm->dev, "dapm: pin %s = %d\n", - pin, status); - w->connected = status; - /* Allow disabling of forced pins */ - if (status == 0) - w->force = 0; - return 0; + if (w->dapm == dapm) + return w; + else + fallback = w; } } - /* Try again in other contexts */ - list_for_each_entry(w, &dapm->card->widgets, list) { - if (!strcmp(w->name, pin)) { - dev_dbg(w->dapm->dev, "dapm: pin %s = %d\n", - pin, status); - w->connected = status; - /* Allow disabling of forced pins */ - if (status == 0) - w->force = 0; - return 0; - } + if (search_other_contexts) + return fallback; + + return NULL; +} + +static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, + const char *pin, int status) +{ + struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); + + if (!w) { + dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); + return -EINVAL; } - dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); - return -EINVAL; + w->connected = status; + if (status == 0) + w->force = 0; + + return 0; } /** @@ -2316,33 +2319,18 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) { - struct snd_soc_dapm_widget *w; + struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); - list_for_each_entry(w, &dapm->card->widgets, list) { - if (w->dapm != dapm) - continue; - if (!strcmp(w->name, pin)) { - dev_dbg(w->dapm->dev, - "dapm: force enable pin %s\n", pin); - w->connected = 1; - w->force = 1; - return 0; - } + if (!w) { + dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); + return -EINVAL; } - /* Try again with other contexts */ - list_for_each_entry(w, &dapm->card->widgets, list) { - if (!strcmp(w->name, pin)) { - dev_dbg(w->dapm->dev, - "dapm: force enable pin %s\n", pin); - w->connected = 1; - w->force = 1; - return 0; - } - } + dev_dbg(w->dapm->dev, "dapm: force enable pin %s\n", pin); + w->connected = 1; + w->force = 1; - dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); - return -EINVAL; + return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); @@ -2394,20 +2382,10 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, const char *pin) { - struct snd_soc_dapm_widget *w; + struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); - list_for_each_entry(w, &dapm->card->widgets, list) { - if (w->dapm != dapm) - continue; - if (!strcmp(w->name, pin)) - return w->connected; - } - - /* Try again in other contexts */ - list_for_each_entry(w, &dapm->card->widgets, list) { - if (!strcmp(w->name, pin)) - return w->connected; - } + if (w) + return w->connected; return 0; } @@ -2427,19 +2405,16 @@ EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, const char *pin) { - struct snd_soc_dapm_widget *w; + struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); - list_for_each_entry(w, &dapm->card->widgets, list) { - if (w->dapm != dapm) - continue; - if (!strcmp(w->name, pin)) { - w->ignore_suspend = 1; - return 0; - } + if (!w) { + dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); + return -EINVAL; } - dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); - return -EINVAL; + w->ignore_suspend = 1; + + return 0; } EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); -- 2.20.1