On Mon, May 30, 2022 at 09:23:14AM -0400, Sasha Levin wrote:
From: Charles Keepax ckeepax@opensource.cirrus.com
[ Upstream commit ff69ec96b87dccb3a29edef8cec5d4fefbbc2055 ]
The endianness flag is used on the CODEC side to specify an ambivalence to endian, typically because it is lost over the hardware link. This device receives audio over an I2S DAI and as such should have endianness applied.
A fixup is also required to use the width directly rather than relying on the format in hw_params, now both little and big endian would be supported. It is worth noting this changes the behaviour of S24_LE to use a word length of 24 rather than 32. This would appear to be a correction since the fact S24_LE is stored as 32 bits should not be presented over the bus.
This series of commits doesn't feel like a good idea for stable, it will probably be safe but it's effectively new feature stuff so out of scope and there's some possibility we might uncover some bug which might've been being masked.