ASoC: Allow topology to create DAI links

From: Mengdong Lin <[email protected]>

This series allows DAI links to be created from topology info.

The components with topology info can come in two ways:
- As a component for cpu dai or codec dai of a DAI link predefined by machine driver.
- As a auxiliary components defined by the machine driver for a soc card. For this case, the machine driver even need not define any DAI links.

The ASoC core will find and probe these components when instantiating the soc card. When probing the components, topology info will be loaded and DAI links can be created by the topology core. And then ASoC core will find and bind new DAI links after probing the components.

We implement a DAI link list and define API for adding/removing DAI links from topology.

Mengdong Lin (5):
ASoC: Implement DAI links in a list & define API to add/remove a link
ASoC: Define add/remove_dai_link ops for a soc card
ASoC: soc_bind_dai_link() directly returns success for a bound DAI
link
ASoC: Bind new DAI links after probing components
ASoC: The soc card can have auxiliary components

 include/sound/soc.h  |  29 +++++++++-
 sound/soc/soc-core.c | 153 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 180 insertions(+), 2 deletions(-)

2.5.0