Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Subject: Re: [PATCH v4 4/9] cpufreq: imx6q: Use auto-registration of thermal
 cooling device
To:     Amit Kucheria <amit.kucheria@linaro.org>,
        linux-kernel@vger.kernel.org
Cc:     linux-arm-msm@vger.kernel.org, viresh.kumar@linaro.org,
        edubezval@gmail.com, swboyd@chromium.org, dianders@chromium.org,
        mka@chromium.org, "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Anson Huang <anson.huang@nxp.com>,
        Shawn Guo <shawnguo@kernel.org>,
        Bastian Stender <bst@pengutronix.de>, linux-pm@vger.kernel.org
References: <cover.1548654899.git.amit.kucheria@linaro.org>
 <6e8ab1213d82b6de5294c0f579a24150aafaf558.1548654899.git.amit.kucheria@linaro.org>
From:   Daniel Lezcano <daniel.lezcano@linaro.org>
Message-ID: <b9a74679-eaf9-626e-f6c5-1112351275b0@linaro.org>
Date:   Mon, 28 Jan 2019 09:34:54 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101
 Thunderbird/60.2.1
MIME-Version: 1.0
In-Reply-To: <6e8ab1213d82b6de5294c0f579a24150aafaf558.1548654899.git.amit.kucheria@linaro.org>
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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@linaro.org>

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

> ---
>  drivers/cpufreq/imx6q-cpufreq.c | 24 ++----------------------
>  1 file changed, 2 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
> index 9fedf627e000..9935df234fa1 100644
> --- a/drivers/cpufreq/imx6q-cpufreq.c
> +++ b/drivers/cpufreq/imx6q-cpufreq.c
> @@ -9,7 +9,6 @@
>  #include <linux/clk.h>
>  #include <linux/cpu.h>
>  #include <linux/cpufreq.h>
> -#include <linux/cpu_cooling.h>
>  #include <linux/err.h>
>  #include <linux/module.h>
>  #include <linux/nvmem-consumer.h>
> @@ -52,7 +51,6 @@ static struct clk_bulk_data clks[] = {
>  };
>  
>  static struct device *cpu_dev;
> -static struct thermal_cooling_device *cdev;
>  static bool free_opp;
>  static struct cpufreq_frequency_table *freq_table;
>  static unsigned int max_freq;
> @@ -193,16 +191,6 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
>  	return 0;
>  }
>  
> -static void imx6q_cpufreq_ready(struct cpufreq_policy *policy)
> -{
> -	cdev = of_cpufreq_cooling_register(policy);
> -
> -	if (!cdev)
> -		dev_err(cpu_dev,
> -			"running cpufreq without cooling device: %ld\n",
> -			PTR_ERR(cdev));
> -}
> -
>  static int imx6q_cpufreq_init(struct cpufreq_policy *policy)
>  {
>  	int ret;
> @@ -214,22 +202,14 @@ static int imx6q_cpufreq_init(struct cpufreq_policy *policy)
>  	return ret;
>  }
>  
> -static int imx6q_cpufreq_exit(struct cpufreq_policy *policy)
> -{
> -	cpufreq_cooling_unregister(cdev);
> -
> -	return 0;
> -}
> -
>  static struct cpufreq_driver imx6q_cpufreq_driver = {
> -	.flags = CPUFREQ_NEED_INITIAL_FREQ_CHECK,
> +	.flags = CPUFREQ_NEED_INITIAL_FREQ_CHECK |
> +		 CPUFREQ_AUTO_REGISTER_COOLING_DEV,
>  	.verify = cpufreq_generic_frequency_table_verify,
>  	.target_index = imx6q_set_target,
>  	.get = cpufreq_generic_get,
>  	.init = imx6q_cpufreq_init,
> -	.exit = imx6q_cpufreq_exit,
>  	.name = "imx6q-cpufreq",
> -	.ready = imx6q_cpufreq_ready,
>  	.attr = cpufreq_generic_attr,
>  	.suspend = cpufreq_generic_suspend,
>  };
> 


-- 
 <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog