Can we enable SDW/SOF also for the 5.8 stable kernel or some vital pieces are
missing in 5.8?
If I am not wrong, it's a 5.9 patch, right?
I just tried with v5.8 stable and there are compilation issues due to
missed dependencies between ASoC and SoundWire subsystems.
sound/soc/intel/boards/sof_sdw.c: In function ‘sdw_startup’:
sound/soc/intel/boards/sof_sdw.c:162:9: error: implicit declaration of
function ‘sdw_startup_stream’; did you mean ‘sdw_enable_stream’?
[-Werror=implicit-function-declaration]
162 | return sdw_startup_stream(substream);
| ^~~~~~~~~~~~~~~~~~
| sdw_enable_stream
sound/soc/intel/boards/sof_sdw.c: In function ‘sdw_shutdown’:
sound/soc/intel/boards/sof_sdw.c:167:2: error: implicit declaration of
function ‘sdw_shutdown_stream’; did you mean ‘sdw_shutdown’?
[-Werror=implicit-function-declaration]
167 | sdw_shutdown_stream(substream);
| ^~~~~~~~~~~~~~~~~~~
| sdw_shutdown
I also tried with plain vanilla v5.9-rc1, and I didn't see any issues. I
think it'd be good to have this patch (and the other one with the
namespace) be added to v5.9 indeed.
That said, this just adds compilation/build support. We are still
missing PM patches that were merged by Vinod earlier this week, we
submitted the multi-link patches and the last batch will be the
bandwidth allocation.
UCM files + PulseAudio changes were shared earlier, so at this point
5.10 should hopefully be the first intercept where SoundWire 'just
works'(tm) across kernel/userspace.
