linux-kernel - Re: [PATCH v4 1/6] opp: Handle target/min/max voltage in dev_pm_opp_adjust

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Message-ID: <20191002143310.GA15898@pi3>
Date:   Wed, 2 Oct 2019 16:33:10 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Sylwester Nawrocki <s.nawrocki@...sung.com>
Cc:     vireshk@...nel.org, robh+dt@...nel.org, kgene@...nel.org,
        devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        b.zolnierkie@...sung.com, m.szyprowski@...sung.com
Subject: Re: [PATCH v4 1/6] opp: Handle target/min/max voltage in
 dev_pm_opp_adjust_voltage()

On Tue, Sep 10, 2019 at 02:36:13PM +0200, Sylwester Nawrocki wrote:
> To be squashed with patch "PM / OPP: Support adjusting OPP voltages
> at runtime".
> 
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
> ---
> Changes since v3:
>  - new patch
> 
>  drivers/opp/core.c     | 10 ++++++++--
>  include/linux/pm_opp.h |  3 ++-
>  2 files changed, 10 insertions(+), 3 deletions(-)

I'll take the ASV driver via samsung-soc but I see it depends on this
one.  Please provide me a stable tag with it or an Ack.

Best regards,
Krzysztof


> 
> diff --git a/drivers/opp/core.c b/drivers/opp/core.c
> index 407a07f29b12..4ebe5a6c280b 100644
> --- a/drivers/opp/core.c
> +++ b/drivers/opp/core.c
> @@ -2057,14 +2057,18 @@ static int _opp_set_availability(struct device *dev, unsigned long freq,
>   * dev_pm_opp_adjust_voltage() - helper to change the voltage of an OPP
>   * @dev:		device for which we do this operation
>   * @freq:		OPP frequency to adjust voltage of
> - * @u_volt:		new OPP voltage
> + * @u_volt:		new OPP target voltage
> + * @u_volt_min:		new OPP min voltage
> + * @u_volt_max:		new OPP max voltage
>   *
>   * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
>   * copy operation, returns 0 if no modifcation was done OR modification was
>   * successful.
>   */
>  int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
> -			      unsigned long u_volt)
> +			      unsigned long u_volt, unsigned long u_volt_min,
> +			      unsigned long u_volt_max)
> +
>  {
>  	struct opp_table *opp_table;
>  	struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV);
> @@ -2098,6 +2102,8 @@ int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
>  		goto adjust_unlock;
> 
>  	opp->supplies->u_volt = u_volt;
> +	opp->supplies->u_volt_min = u_volt_min;
> +	opp->supplies->u_volt_max = u_volt_max;
> 
>  	dev_pm_opp_get(opp);
>  	mutex_unlock(&opp_table->lock);
> diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
> index 86947d53e8c4..0ee1daafe6af 100644
> --- a/include/linux/pm_opp.h
> +++ b/include/linux/pm_opp.h
> @@ -113,7 +113,8 @@ void dev_pm_opp_remove(struct device *dev, unsigned long freq);
>  void dev_pm_opp_remove_all_dynamic(struct device *dev);
> 
>  int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
> -			      unsigned long u_volt);
> +			      unsigned long u_volt, unsigned long u_volt_min,
> +			      unsigned long u_volt_max);
> 
>  int dev_pm_opp_enable(struct device *dev, unsigned long freq);
> 
> --
> 2.17.1
>