linux-kernel - Re: [PATCH v3 08/12] opp: Add devm_pm_opp_register_set_opp

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Date:   Mon, 18 Jan 2021 16:37:10 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Kevin Hilman <khilman@...nel.org>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        Viresh Kumar <vireshk@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>, Nishanth Menon <nm@...com>,
        Yangtao Li <tiny.windzz@...il.com>,
        Matt Merhar <mattmerhar@...tonmail.com>,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v3 08/12] opp: Add devm_pm_opp_register_set_opp_helper

On 18-01-21, 03:55, Dmitry Osipenko wrote:
> Add resource-managed version of dev_pm_opp_register_set_opp_helper().
> 
> Tested-by: Peter Geis <pgwipeout@...il.com>
> Tested-by: Nicolas Chauvet <kwizart@...il.com>
> Tested-by: Matt Merhar <mattmerhar@...tonmail.com>
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/opp/core.c     | 34 ++++++++++++++++++++++++++++++++++
>  include/linux/pm_opp.h |  8 ++++++++
>  2 files changed, 42 insertions(+)
> 
> diff --git a/drivers/opp/core.c b/drivers/opp/core.c
> index fde2ec00ab0e..8e0d2193fd5f 100644
> --- a/drivers/opp/core.c
> +++ b/drivers/opp/core.c
> @@ -2857,3 +2857,37 @@ int dev_pm_opp_set_voltage(struct device *dev, struct dev_pm_opp *opp)
>  	return ret;
>  }
>  EXPORT_SYMBOL_GPL(dev_pm_opp_set_voltage);
> +
> +static void devm_pm_opp_unregister_set_opp_helper(void *data)
> +{
> +	dev_pm_opp_unregister_set_opp_helper(data);
> +}
> +
> +/**
> + * devm_pm_opp_register_set_opp_helper() - Register custom set OPP helper
> + * @dev: Device for which the helper is getting registered.
> + * @set_opp: Custom set OPP helper.
> + *
> + * This is a resource-managed version of dev_pm_opp_register_set_opp_helper().
> + *
> + * Return: pointer to 'struct opp_table' on success and errorno otherwise.
> + */
> +struct opp_table *
> +devm_pm_opp_register_set_opp_helper(struct device *dev,
> +				    int (*set_opp)(struct dev_pm_set_opp_data *data))
> +{
> +	struct opp_table *opp_table;
> +	int err;
> +
> +	opp_table = dev_pm_opp_register_set_opp_helper(dev, set_opp);
> +	if (IS_ERR(opp_table))
> +		return opp_table;
> +
> +	err = devm_add_action_or_reset(dev, devm_pm_opp_unregister_set_opp_helper,
> +				       opp_table);
> +	if (err)
> +		return ERR_PTR(err);
> +
> +	return opp_table;
> +}
> +EXPORT_SYMBOL_GPL(devm_pm_opp_register_set_opp_helper);
> diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
> index e072148ae0e1..6de5853aaada 100644
> --- a/include/linux/pm_opp.h
> +++ b/include/linux/pm_opp.h
> @@ -169,6 +169,7 @@ void dev_pm_opp_remove_table(struct device *dev);
>  void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask);
>  int dev_pm_opp_sync_regulators(struct device *dev);
>  int dev_pm_opp_set_voltage(struct device *dev, struct dev_pm_opp *opp);
> +struct opp_table *devm_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
>  #else
>  static inline struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
>  {
> @@ -428,6 +429,13 @@ static inline int dev_pm_opp_set_voltage(struct device *dev, struct dev_pm_opp *
>  	return -ENOTSUPP;
>  }
>  
> +static inline struct opp_table *
> +devm_pm_opp_register_set_opp_helper(struct device *dev,
> +				    int (*set_opp)(struct dev_pm_set_opp_data *data))
> +{
> +	return ERR_PTR(-ENOTSUPP);
> +}
> +
>  #endif		/* CONFIG_PM_OPP */
>  
>  #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)

Applied. Thanks.

I had to apply it manually, please make sure it works fine.

-- 
viresh