linux-kernel - Re: [PATCH 2/9] soc: samsung: pmu: Add powerup

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Message-ID: <CAJKOXPcH6yubekS7u6PLCVVLh=3jF9Kn8B8S6r5Hfhxd+1r07A@mail.gmail.com>
Date:   Tue, 9 Jan 2018 12:52:11 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Chanwoo Choi <cw00.choi@...sung.com>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>, kgene@...nel.org,
        Tomasz Figa <tomasz.figa@...il.com>, chanwoo@...nel.org,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Inki Dae <inki.dae@...sung.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 2/9] soc: samsung: pmu: Add powerup_conf callback

On Tue, Jan 9, 2018 at 8:58 AM, Chanwoo Choi <cw00.choi@...sung.com> wrote:
> This patch adds the powerup_conf callback which is used to re-initialize

Do not describe every patch as this patch. It does not bring any
information because I am already looking at this patch.
http://elixir.free-electrons.com/linux/latest/source/Documentation/process/submitting-patches.rst#L151

> the PMU registers during the resume state.
>
> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
> ---
>  drivers/soc/samsung/exynos-pmu.c       | 8 ++++++++
>  drivers/soc/samsung/exynos-pmu.h       | 1 +
>  include/linux/soc/samsung/exynos-pmu.h | 1 +
>  3 files changed, 10 insertions(+)
>
> diff --git a/drivers/soc/samsung/exynos-pmu.c b/drivers/soc/samsung/exynos-pmu.c
> index f56adbd9fb8b..cfc9de518344 100644
> --- a/drivers/soc/samsung/exynos-pmu.c
> +++ b/drivers/soc/samsung/exynos-pmu.c
> @@ -58,6 +58,14 @@ void exynos_sys_powerdown_conf(enum sys_powerdown mode)
>                 pmu_data->powerdown_conf_extra(mode);
>  }
>
> +void exynos_sys_powerup_conf(enum sys_powerdown mode)
> +{
> +       const struct exynos_pmu_data *pmu_data = pmu_context->pmu_data;
> +

Follow the existing pattern of exynos_sys_powerdown_conf() to check if
pmu_context was initialized. At this commit, for Exynos5433 it is not
being set.

Best regards,
Krzysztof

> +       if (pmu_data->powerup_conf)
> +               pmu_data->powerup_conf(mode);
> +}
> +
>  /*
>   * Split the data between ARM architectures because it is relatively big
>   * and useless on other arch.
> diff --git a/drivers/soc/samsung/exynos-pmu.h b/drivers/soc/samsung/exynos-pmu.h
> index 977e4daf5a0f..efbaf8929252 100644
> --- a/drivers/soc/samsung/exynos-pmu.h
> +++ b/drivers/soc/samsung/exynos-pmu.h
> @@ -24,6 +24,7 @@ struct exynos_pmu_data {
>         void (*pmu_init)(void);
>         void (*powerdown_conf)(enum sys_powerdown);
>         void (*powerdown_conf_extra)(enum sys_powerdown);
> +       void (*powerup_conf)(enum sys_powerdown);
>  };
>
>  extern void __iomem *pmu_base_addr;
> diff --git a/include/linux/soc/samsung/exynos-pmu.h b/include/linux/soc/samsung/exynos-pmu.h
> index e57eb4b6cc5a..3aacf7b18401 100644
> --- a/include/linux/soc/samsung/exynos-pmu.h
> +++ b/include/linux/soc/samsung/exynos-pmu.h
> @@ -22,6 +22,7 @@ enum sys_powerdown {
>  };
>
>  extern void exynos_sys_powerdown_conf(enum sys_powerdown mode);
> +extern void exynos_sys_powerup_conf(enum sys_powerdown mode);
>  #ifdef CONFIG_EXYNOS_PMU
>  extern struct regmap *exynos_get_pmu_regmap(void);
>  #else
> --
> 1.9.1
>