asoc: codecs: Add ep92 version read and NULL check

Provide chipid and version info in sysfs.
Fix error handling and avoid polling when device is not present.

Change-Id: Ie31b14e494e527ede001c334e3617f16fd687a28
Signed-off-by: Ralf Herz <rherz@codeaurora.org>
此提交包含在:
Ralf Herz
2018-10-23 16:11:49 +02:00
提交者 Meng Wang
父節點 b9c563ff6f
當前提交 1efff87050

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