[PATCH v2 01/96] ASoC: soc-component: Add legacy_dai_naming flag

[Charles Keepax <ckeepax@opensource.cirrus.com>]

Historically, the legacy DAI naming scheme was applied to platform
drivers and the newer scheme to CODEC drivers. During componentisation
the core lost the knowledge of if a driver was a CODEC or platform, they
were all now components. To continue to support the legacy naming on
older platform drivers a flag was added to the snd_soc_component_driver
structure, non_legacy_dai_naming, to indicate to use the new scheme and
this was applied to all CODECs as part of the migration.

However, a slight issue appears to be developing with respect to this
flag being opt in for the non-legacy scheme, which presumably we want to
be the primary scheme used. Many codec drivers appear to forget to
include this flag:

  grep -l -r "snd_soc_component_driver" sound/soc/codecs/*.c |
  xargs grep -L "non_legacy_dai_naming" | wc
     48      48    556

It would seem more sensible to change the flag to legacy_dai_naming
making the new scheme opt out. As a first step this patch adds a new
flag for this so that the users can be updated.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---
 include/sound/soc-component.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/sound/soc-component.h b/include/sound/soc-component.h
index 5c4cfa70b018c..96c2f5fffc51e 100644
--- a/include/sound/soc-component.h
+++ b/include/sound/soc-component.h
@@ -179,6 +179,7 @@ struct snd_soc_component_driver {
 	 * analogue).
 	 */
 	unsigned int endianness:1;
+	unsigned int legacy_dai_naming:1;
 	unsigned int non_legacy_dai_naming:1;
 
 	/* this component uses topology and ignore machine driver FEs */
-- 
2.30.2