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ASoC: dapm - Add methods to retrieve snd_card and soc_card from dapm context. 

In preparation for ASoC Dynamic PCM (AKA DSP) support.

Provide convenience methods to retrieve the soc_card or snd_card from a
DAPM context.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Liam Girdwood 2011-07-20 12:23:33 +01:00 committed by Mark Brown
parent d7c3e9525a
commit 4805608ac1
1 changed files with 30 additions and 0 deletions
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30
sound/soc/soc-dapm.c
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@ -124,6 +124,36 @@ static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
}
/* get snd_card from DAPM context */
static inline struct snd_card *dapm_get_snd_card(
struct snd_soc_dapm_context *dapm)
{
if (dapm->codec)
return dapm->codec->card->snd_card;
else if (dapm->platform)
return dapm->platform->card->snd_card;
else
BUG();
/* unreachable */
return NULL;
}
/* get soc_card from DAPM context */
static inline struct snd_soc_card *dapm_get_soc_card(
struct snd_soc_dapm_context *dapm)
{
if (dapm->codec)
return dapm->codec->card;
else if (dapm->platform)
return dapm->platform->card;
else
BUG();
/* unreachable */
return NULL;
}
static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
{
if (w->codec)