linux-kernel - Re: [PATCH v3 1/4] devfreq: exynos-bus: Extract exynos_bus_profile

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Message-ID: <3d2c8269-cefe-0736-4fb9-729cc337db43@samsung.com>
Date:   Tue, 10 Dec 2019 13:20:43 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Artur Świgoń <a.swigon@...sung.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-pm@...r.kernel.org
Cc:     myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
        kgene@...nel.org, krzk@...nel.org, b.zolnierkie@...sung.com,
        m.szyprowski@...sung.com, inki.dae@...sung.com,
        sw0312.kim@...sung.com, k.konieczny@...sung.com,
        leonard.crestez@....com
Subject: Re: [PATCH v3 1/4] devfreq: exynos-bus: Extract
 exynos_bus_profile_init()

On 12/9/19 7:48 PM, Artur Świgoń wrote:
> This patch adds a new static function, exynos_bus_profile_init(), extracted
> from exynos_bus_probe().
> 
> Signed-off-by: Artur Świgoń <a.swigon@...sung.com>
> ---
>  drivers/devfreq/exynos-bus.c | 106 ++++++++++++++++++++---------------
>  1 file changed, 60 insertions(+), 46 deletions(-)
> 
> diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
> index c832673273a2..b8ca6b9f4b82 100644
> --- a/drivers/devfreq/exynos-bus.c
> +++ b/drivers/devfreq/exynos-bus.c
> @@ -287,12 +287,69 @@ static int exynos_bus_parse_of(struct device_node *np,
>  	return ret;
>  }
>  
> +static int exynos_bus_profile_init(struct exynos_bus *bus,
> +				   struct devfreq_dev_profile *profile)
> +{
> +	struct device *dev = bus->dev;
> +	struct devfreq_simple_ondemand_data *ondemand_data;
> +	int ret;
> +
> +	/* Initialize the struct profile and governor data for parent device */
> +	profile->polling_ms = 50;
> +	profile->target = exynos_bus_target;
> +	profile->get_dev_status = exynos_bus_get_dev_status;
> +	profile->exit = exynos_bus_exit;
> +
> +	ondemand_data = devm_kzalloc(dev, sizeof(*ondemand_data), GFP_KERNEL);
> +	if (!ondemand_data) {
> +		ret = -ENOMEM;
> +		goto err;
> +	}
> +	ondemand_data->upthreshold = 40;
> +	ondemand_data->downdifferential = 5;
> +
> +	/* Add devfreq device to monitor and handle the exynos bus */
> +	bus->devfreq = devm_devfreq_add_device(dev, profile,
> +						DEVFREQ_GOV_SIMPLE_ONDEMAND,
> +						ondemand_data);
> +	if (IS_ERR(bus->devfreq)) {
> +		dev_err(dev, "failed to add devfreq device\n");
> +		ret = PTR_ERR(bus->devfreq);
> +		goto err;
> +	}
> +
> +	/* Register opp_notifier to catch the change of OPP  */
> +	ret = devm_devfreq_register_opp_notifier(dev, bus->devfreq);
> +	if (ret < 0) {
> +		dev_err(dev, "failed to register opp notifier\n");
> +		goto err;
> +	}
> +
> +	/*
> +	 * Enable devfreq-event to get raw data which is used to determine
> +	 * current bus load.
> +	 */
> +	ret = exynos_bus_enable_edev(bus);
> +	if (ret < 0) {
> +		dev_err(dev, "failed to enable devfreq-event devices\n");
> +		goto err;
> +	}
> +
> +	ret = exynos_bus_set_event(bus);
> +	if (ret < 0) {
> +		dev_err(dev, "failed to set event to devfreq-event devices\n");
> +		goto err;
> +	}
> +
> +err:
> +	return ret;
> +}
> +
>  static int exynos_bus_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
>  	struct device_node *np = dev->of_node, *node;
>  	struct devfreq_dev_profile *profile;
> -	struct devfreq_simple_ondemand_data *ondemand_data;
>  	struct devfreq_passive_data *passive_data;
>  	struct devfreq *parent_devfreq;
>  	struct exynos_bus *bus;
> @@ -334,52 +391,9 @@ static int exynos_bus_probe(struct platform_device *pdev)
>  	if (passive)
>  		goto passive;
>  
> -	/* Initialize the struct profile and governor data for parent device */
> -	profile->polling_ms = 50;
> -	profile->target = exynos_bus_target;
> -	profile->get_dev_status = exynos_bus_get_dev_status;
> -	profile->exit = exynos_bus_exit;
> -
> -	ondemand_data = devm_kzalloc(dev, sizeof(*ondemand_data), GFP_KERNEL);
> -	if (!ondemand_data) {
> -		ret = -ENOMEM;
> +	ret = exynos_bus_profile_init(bus, profile);
> +	if (ret < 0)
>  		goto err;
> -	}
> -	ondemand_data->upthreshold = 40;
> -	ondemand_data->downdifferential = 5;
> -
> -	/* Add devfreq device to monitor and handle the exynos bus */
> -	bus->devfreq = devm_devfreq_add_device(dev, profile,
> -						DEVFREQ_GOV_SIMPLE_ONDEMAND,
> -						ondemand_data);
> -	if (IS_ERR(bus->devfreq)) {
> -		dev_err(dev, "failed to add devfreq device\n");
> -		ret = PTR_ERR(bus->devfreq);
> -		goto err;
> -	}
> -
> -	/* Register opp_notifier to catch the change of OPP  */
> -	ret = devm_devfreq_register_opp_notifier(dev, bus->devfreq);
> -	if (ret < 0) {
> -		dev_err(dev, "failed to register opp notifier\n");
> -		goto err;
> -	}
> -
> -	/*
> -	 * Enable devfreq-event to get raw data which is used to determine
> -	 * current bus load.
> -	 */
> -	ret = exynos_bus_enable_edev(bus);
> -	if (ret < 0) {
> -		dev_err(dev, "failed to enable devfreq-event devices\n");
> -		goto err;
> -	}
> -
> -	ret = exynos_bus_set_event(bus);
> -	if (ret < 0) {
> -		dev_err(dev, "failed to set event to devfreq-event devices\n");
> -		goto err;
> -	}
>  
>  	goto out;
>  passive:
> 

Applied it. Thanks.

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics