A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 18:51:56 -04:00
Code Issues Projects Releases Packages Wiki Activity

ASoC: Move widgets from DAPM context to snd_soc_card

Browse source 
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 <[email protected]>
Acked-by: Liam Girdwood <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
This commit is contained in:
Jarkko Nikula 2010-12-14 12:18:31 +02:00 • committed by Mark Brown
commit 97c866defc
5 changed files with 55 additions and 23 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/sound/soc-dapm.h
View file

@ -462,7 +462,7 @@ struct snd_soc_dapm_widget {
/* DAPM context */
struct snd_soc_dapm_context {
struct list_head widgets;
int n_widgets; /* number of widgets in this context */
enum snd_soc_bias_level bias_level;
enum snd_soc_bias_level suspend_bias_level;
struct delayed_work delayed_work;

1
include/sound/soc.h
View file

@ -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