Btw the .ignore_suspend is also set in bytcr_rt5640/51 drivers, so wondering if additional devices are broken, or if there's something off about Broadwell in general. Hans, have you heard of any regressions on Baytrail devices?
I've just tested 5.6.0 on Bay Trail + a rt5651 codec, using the bytcr_rt5651 machine driver which sets ignore_suspend, as well as on a Cherry Trail + rt5645 device using the chtrt5645 machine driver which does _not_ set ignore suspend.
Suspend/resume work fine on both and music playing before suspend continues playing after suspend.
Thanks for testing Hans.
I think we should remove those .ignore_suspend from all Baytrail/Cherrytrail drivers, no one ever enabled advanced power management except in very specific Android distributions that are no longer maintained.
Note that the bytcr_rt5651 machine driver also does:
snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone"); snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker");
Which the bdw-rt5677 seems to not do...
On the bytcr_rt5661, these two lines were added in the initial code in 2016, and it's also part of the legacy byt-rt5640, so it's likely a copy/paste more than a feature added on purpose.