linux-kernel - RE: [PATCH 1/3] thermal: imx: remove cpufreq cooling registration

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Message-ID: <AM3PR04MB1315B6320421800346313075F59C0@AM3PR04MB1315.eurprd04.prod.outlook.com>
Date:   Mon, 14 May 2018 09:10:56 +0000
From:   Anson Huang <anson.huang@....com>
To:     Bastian Stender <bst@...gutronix.de>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "rjw@...ysocki.net" <rjw@...ysocki.net>,
        "viresh.kumar@...aro.org" <viresh.kumar@...aro.org>,
        "rui.zhang@...el.com" <rui.zhang@...el.com>,
        "edubezval@...il.com" <edubezval@...il.com>
CC:     "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/3] thermal: imx: remove cpufreq cooling registration



Anson Huang
Best Regards!


> -----Original Message-----
> From: Bastian Stender [mailto:bst@...gutronix.de]
> Sent: Monday, May 14, 2018 4:37 PM
> To: Anson Huang <anson.huang@....com>; shawnguo@...nel.org;
> s.hauer@...gutronix.de; kernel@...gutronix.de; Fabio Estevam
> <fabio.estevam@....com>; robh+dt@...nel.org; mark.rutland@....com;
> rjw@...ysocki.net; viresh.kumar@...aro.org; rui.zhang@...el.com;
> edubezval@...il.com
> Cc: devicetree@...r.kernel.org; linux-pm@...r.kernel.org; dl-linux-imx
> <linux-imx@....com>; linux-arm-kernel@...ts.infradead.org;
> linux-kernel@...r.kernel.org
> Subject: Re: [PATCH 1/3] thermal: imx: remove cpufreq cooling registration
> 
> Hi,
> 
> On 05/14/2018 10:09 AM, Anson Huang wrote:
> > This patch removes cpufreq cooling registration in thermal .probe
> > function, cpufreq cooling should be done in cpufreq driver when it is
> > ready.
> >
> > Signed-off-by: Anson Huang <Anson.Huang@....com>
> 
> It seems you are trying to achieve something similar to a patch I sent a couple
> of month ago. Unfortunately I did not have the time to rework it yet:
> 
> 
> https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatch
> work.kernel.org%2Fpatch%2F10059085%2F&data=02%7C01%7Canson.huang
> %40nxp.com%7C179da3635cab4a14deef08d5b975ecb6%7C686ea1d3bc2b4c6f
> a92cd99c5c301635%7C0%7C0%7C636618838508978629&sdata=BcQ9tc%2BE
> CZ%2Fk4AsZFxshgmvSsPg7eRN0ASzP8LO8yBI%3D&reserved=0
> 
> Some of the comments might apply here too.
 
Ah, I did NOT notice this thread, so how to proceed, will you continue to finish your patch?
If yes, then you can just ignore/skip my patch, thanks.

Anson.

> 
> Regards,
> Bastian
> 
> > ---
> >   drivers/thermal/imx_thermal.c | 16 ----------------
> >   1 file changed, 16 deletions(-)
> >
> > diff --git a/drivers/thermal/imx_thermal.c
> > b/drivers/thermal/imx_thermal.c index c30dc21..8eedb97 100644
> > --- a/drivers/thermal/imx_thermal.c
> > +++ b/drivers/thermal/imx_thermal.c
> > @@ -9,7 +9,6 @@
> >
> >   #include <linux/clk.h>
> >   #include <linux/cpufreq.h>
> > -#include <linux/cpu_cooling.h>
> >   #include <linux/delay.h>
> >   #include <linux/device.h>
> >   #include <linux/init.h>
> > @@ -207,7 +206,6 @@ static struct thermal_soc_data thermal_imx7d_data
> = {
> >   struct imx_thermal_data {
> >   	struct cpufreq_policy *policy;
> >   	struct thermal_zone_device *tz;
> > -	struct thermal_cooling_device *cdev;
> >   	enum thermal_device_mode mode;
> >   	struct regmap *tempmon;
> >   	u32 c1, c2; /* See formula in imx_init_calib() */ @@ -729,22
> > +727,12 @@ static int imx_thermal_probe(struct platform_device *pdev)
> >   		return -EPROBE_DEFER;
> >   	}
> >
> > -	data->cdev = cpufreq_cooling_register(data->policy);
> > -	if (IS_ERR(data->cdev)) {
> > -		ret = PTR_ERR(data->cdev);
> > -		dev_err(&pdev->dev,
> > -			"failed to register cpufreq cooling device: %d\n", ret);
> > -		cpufreq_cpu_put(data->policy);
> > -		return ret;
> > -	}
> > -
> >   	data->thermal_clk = devm_clk_get(&pdev->dev, NULL);
> >   	if (IS_ERR(data->thermal_clk)) {
> >   		ret = PTR_ERR(data->thermal_clk);
> >   		if (ret != -EPROBE_DEFER)
> >   			dev_err(&pdev->dev,
> >   				"failed to get thermal clk: %d\n", ret);
> > -		cpufreq_cooling_unregister(data->cdev);
> >   		cpufreq_cpu_put(data->policy);
> >   		return ret;
> >   	}
> > @@ -759,7 +747,6 @@ static int imx_thermal_probe(struct platform_device
> *pdev)
> >   	ret = clk_prepare_enable(data->thermal_clk);
> >   	if (ret) {
> >   		dev_err(&pdev->dev, "failed to enable thermal clk: %d\n", ret);
> > -		cpufreq_cooling_unregister(data->cdev);
> >   		cpufreq_cpu_put(data->policy);
> >   		return ret;
> >   	}
> > @@ -775,7 +762,6 @@ static int imx_thermal_probe(struct platform_device
> *pdev)
> >   		dev_err(&pdev->dev,
> >   			"failed to register thermal zone device %d\n", ret);
> >   		clk_disable_unprepare(data->thermal_clk);
> > -		cpufreq_cooling_unregister(data->cdev);
> >   		cpufreq_cpu_put(data->policy);
> >   		return ret;
> >   	}
> > @@ -811,7 +797,6 @@ static int imx_thermal_probe(struct platform_device
> *pdev)
> >   		dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret);
> >   		clk_disable_unprepare(data->thermal_clk);
> >   		thermal_zone_device_unregister(data->tz);
> > -		cpufreq_cooling_unregister(data->cdev);
> >   		cpufreq_cpu_put(data->policy);
> >   		return ret;
> >   	}
> > @@ -831,7 +816,6 @@ static int imx_thermal_remove(struct
> platform_device *pdev)
> >   		clk_disable_unprepare(data->thermal_clk);
> >
> >   	thermal_zone_device_unregister(data->tz);
> > -	cpufreq_cooling_unregister(data->cdev);
> >   	cpufreq_cpu_put(data->policy);
> >
> >   	return 0;
> >
> 
> --
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