RFC ASoC: Use DMI name in sound card long name

From: Mengdong Lin <[email protected]>

This series is based on Liam's idea to use DMI name as the sound card short name in the audio workshop. After testing on serveral machines, we changed the design a little:
- Not change the card name (short name), keep it simple. So the card ID won't change as well.
- Use short name and DMI name together to make a readable and unqique long name.

Machine drivers can use a new API to get this feature.

We hope to get aligned on the kernel side at first, then we'll update UCM code in alsa-lib: when the sound server ask UCM to open a sound card, UCM will try to find the best configuration file that matches the card long name, and only if not avaiable, fallback to the default configuration file that matches the card name (short name).

Liam Girdwood (1):
ASoC: core: Add API to use DMI name in sound card long name

Mengdong Lin (1):
ASoC: Intel: Use DMI name for sound card long name in Broadwell
machine driver

 include/sound/soc.h                |   5 ++
 sound/soc/intel/boards/broadwell.c |   2 +
 sound/soc/soc-core.c               | 134 +++++++++++++++++++++++++++++++++++++
 3 files changed, 141 insertions(+)

2.5.0