linux-kernel - Re: [RFC PATCH v2 0/2] Introduce multi PM domains helpers

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Message-ID: <CAEnQRZDsfSohbkbLd73AjN=2C3C6MTBdKqt84DHXkscjpq9rKQ@mail.gmail.com>
Date:   Mon, 30 Mar 2020 11:38:13 +0300
From:   Daniel Baluta <daniel.baluta@...il.com>
To:     Daniel Baluta <daniel.baluta@....nxp.com>,
        Aisheng Dong <aisheng.dong@....com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        rafael.j.wysocki@...el.com
Cc:     rjw@...ysocki.net, "Brown, Len" <len.brown@...el.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Fabio Estevam <festevam@...il.com>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        linux-pm@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sascha Hauer <s.hauer@...gutronix.de>, khilman@...nel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Daniel Baluta <daniel.baluta@....com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Paul Olaru <paul.olaru@....com>,
        dl-linux-imx <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        "S.j. Wang" <shengjiu.wang@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC PATCH v2 0/2] Introduce multi PM domains helpers

Rafael / Ulf / Aisheng,

Any comments?

On Wed, Mar 4, 2020 at 2:20 PM Daniel Baluta <daniel.baluta@....nxp.com> wrote:
>
> From: Daniel Baluta <daniel.baluta@....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 v1: (addressed Ranjani's comments)
>         - enhanced description for dev_multi_pm_attach return value
>         - renamed exit_unroll_pm label to exit_detach_pm
>
> 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(-)
>
> --
> 2.17.1
>