linux-kernel - Re: [PATCH v4 7/9] cpufreq: qoriq: Use auto-registration of thermal cooling device

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Message-ID: <1b5ecceb-f7b4-903b-4158-394618fab8d3@linaro.org>
Date:   Mon, 28 Jan 2019 09:37:48 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Amit Kucheria <amit.kucheria@...aro.org>,
        linux-kernel@...r.kernel.org
Cc:     linux-arm-msm@...r.kernel.org, viresh.kumar@...aro.org,
        edubezval@...il.com, swboyd@...omium.org, dianders@...omium.org,
        mka@...omium.org, "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Markus Elfring <elfring@...rs.sourceforge.net>,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 7/9] cpufreq: qoriq: Use auto-registration of thermal
 cooling device

On 28/01/2019 07:41, Amit Kucheria wrote:
> Use the CPUFREQ_AUTO_REGISTER_COOLING_DEV flag to allow cpufreq core to
> automatically register as a thermal cooling device.
> 
> This allows removal of boiler plate code from the driver.
> 
> Signed-off-by: Amit Kucheria <amit.kucheria@...aro.org>

Reviewed-by: Daniel Lezcano <daniel.lezcano@...aro.org>


> ---
>  drivers/cpufreq/qoriq-cpufreq.c | 15 ++-------------
>  1 file changed, 2 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/cpufreq/qoriq-cpufreq.c b/drivers/cpufreq/qoriq-cpufreq.c
> index 3d773f64b4df..b206e6cb55f0 100644
> --- a/drivers/cpufreq/qoriq-cpufreq.c
> +++ b/drivers/cpufreq/qoriq-cpufreq.c
> @@ -13,7 +13,6 @@
>  #include <linux/clk.h>
>  #include <linux/clk-provider.h>
>  #include <linux/cpufreq.h>
> -#include <linux/cpu_cooling.h>
>  #include <linux/errno.h>
>  #include <linux/init.h>
>  #include <linux/kernel.h>
> @@ -31,7 +30,6 @@
>  struct cpu_data {
>  	struct clk **pclk;
>  	struct cpufreq_frequency_table *table;
> -	struct thermal_cooling_device *cdev;
>  };
>  
>  /*
> @@ -239,7 +237,6 @@ static int qoriq_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>  {
>  	struct cpu_data *data = policy->driver_data;
>  
> -	cpufreq_cooling_unregister(data->cdev);
>  	kfree(data->pclk);
>  	kfree(data->table);
>  	kfree(data);
> @@ -258,23 +255,15 @@ static int qoriq_cpufreq_target(struct cpufreq_policy *policy,
>  	return clk_set_parent(policy->clk, parent);
>  }
>  
> -
> -static void qoriq_cpufreq_ready(struct cpufreq_policy *policy)
> -{
> -	struct cpu_data *cpud = policy->driver_data;
> -
> -	cpud->cdev = of_cpufreq_cooling_register(policy);
> -}
> -
>  static struct cpufreq_driver qoriq_cpufreq_driver = {
>  	.name		= "qoriq_cpufreq",
> -	.flags		= CPUFREQ_CONST_LOOPS,
> +	.flags		= CPUFREQ_CONST_LOOPS |
> +			  CPUFREQ_AUTO_REGISTER_COOLING_DEV,
>  	.init		= qoriq_cpufreq_cpu_init,
>  	.exit		= qoriq_cpufreq_cpu_exit,
>  	.verify		= cpufreq_generic_frequency_table_verify,
>  	.target_index	= qoriq_cpufreq_target,
>  	.get		= cpufreq_generic_get,
> -	.ready		= qoriq_cpufreq_ready,
>  	.attr		= cpufreq_generic_attr,
>  };
>  
> 


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