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| author | Jarkko Nikula <jhnikula@gmail.com> | 2010-12-14 12:18:31 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-12-15 18:01:01 +0000 |
| commit | 97c866defc0fc6e18b49603ac19f732f53e79c46 (patch) | |
| tree | 66ba8412fad0974ebf9a30c45ad5d81f26607e6e /include/sound/soc.h | |
| parent | 8ddab3f5107c3955e70e87a632d4d179ddba1189 (diff) | |
| download | lwn-97c866defc0fc6e18b49603ac19f732f53e79c46.tar.gz lwn-97c866defc0fc6e18b49603ac19f732f53e79c46.zip | |
ASoC: Move widgets from DAPM context to snd_soc_card
Decoupling widgets from DAPM context is required when extending the ASoC
core to cross-device paths. Even the list of widgets are now kept in
struct snd_soc_card, the widget listing in sysfs and debugs remain sorted
per device.
This patch makes possible to build cross-device paths but does not extend
yet the DAPM to handle codec bias and widget power changes of an another
device.
Cross-device paths are registered by listing the widgets from device A in
a map for device B. In case of conflicting widget names between the devices,
a uniform name prefix is needed to separate them. See commit ead9b91
"ASoC: Add optional name_prefix for kcontrol, widget and route names" for
help.
An example below shows a path that connects MONO out of A into Line In of B:
static const struct snd_soc_dapm_route mapA[] = {
{"MONO", NULL, "DAC"},
};
static const struct snd_soc_dapm_route mapB[] = {
{"Line In", NULL, "MONO"},
};
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound/soc.h')
| -rw-r--r-- | include/sound/soc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index 466895b627b5..d5fb8618fdba 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -661,6 +661,7 @@ struct snd_soc_card { struct list_head platform_dev_list; struct list_head dai_dev_list; + struct list_head widgets; struct list_head paths; #ifdef CONFIG_DEBUG_FS |