[PATCH v3 0/2] Introduce multi PM domains helpers

[Daniel Baluta <daniel.baluta@oss.nxp.com>]

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From: Daniel Baluta <daniel.baluta@nxp.com>

i.MX8QXP/i.MX8QM has IPs that need multiple power domains to be up
in order to work. In order to help drivers, we introduce multi PM
domains helpers that are able to activate/deactivate multi PM domains.

First patch introduces the helpers and second patch demonstrates how
a driver can use them instead of hardcoding the PM domains handling.

Changes since v2:
»       - fix kernel test robot reported issues (missing static inline
	for newly introduced functions in headers and arguments
	swapped for devm_kzalloc).

Changes since v1: (addressed Ranjani's comments)
»       - enhanced description for dev_multi_pm_attach return value
»       - renamed exit_unroll_pm label to exit_detach_pm

Ideally would be to have patch 1/2 merged via power tree and then I
will submit again patch 2/2 on sound tree.

Daniel Baluta (2):
  PM / domains: Introduce multi PM domains helpers
  ASoC: SOF: Use multi PM domains helpers

 drivers/base/power/common.c | 93 +++++++++++++++++++++++++++++++++++++
 include/linux/pm_domain.h   | 19 ++++++++
 sound/soc/sof/imx/imx8.c    | 60 ++++--------------------
 3 files changed, 121 insertions(+), 51 deletions(-)

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