linux-kernel - Re: [PATCH] thermal: rockchip: enable hwmon

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Date:   Mon,  2 Dec 2019 06:52:56 -0800 (PST)
From:   Stefan Schaeckeler <schaecsn@....net>
To:     rui.zhang@...el.com, edubezval@...il.com,
        daniel.lezcano@...aro.org, amit.kucheria@...durent.com,
        heiko@...ech.de, linux-pm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] thermal: rockchip: enable hwmon

Hello linux power management mailing list and others,

New month, new try. Could someone review this patch, please. I would really
like to see the Rockchip RK3399 temperature sensors hooked up to the hwmon API.

~ Stefan

> Enable hwmon for the soc and gpu temperature sensors.
>
> Signed-off-by: Stefan Schaeckeler <schaecsn@....net>
>
> ---
>  drivers/thermal/rockchip_thermal.c | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
> index 343c2f5c5a25..e47c60010259 100644
> --- a/drivers/thermal/rockchip_thermal.c
> +++ b/drivers/thermal/rockchip_thermal.c
> @@ -19,6 +19,8 @@
>  #include <linux/mfd/syscon.h>
>  #include <linux/pinctrl/consumer.h>
>
> +#include "thermal_hwmon.h"
> +
>  /**
>   * If the temperature over a period of time High,
>   * the resulting TSHUT gave CRU module,let it reset the entire chip,
> @@ -1321,8 +1323,15 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
>
>  	thermal->chip->control(thermal->regs, true);
>
> -	for (i = 0; i < thermal->chip->chn_num; i++)
> +	for (i = 0; i < thermal->chip->chn_num; i++) {
>  		rockchip_thermal_toggle_sensor(&thermal->sensors[i], true);
> +		thermal->sensors[i].tzd->tzp->no_hwmon = false;
> +		error = thermal_add_hwmon_sysfs(thermal->sensors[i].tzd);
> +		if (error)
> +			dev_warn(&pdev->dev,
> +				 "failed to register sensor %d with hwmon: %d\n",
> +				 i, error);
> +	}
>
>  	platform_set_drvdata(pdev, thermal);
>
> @@ -1344,6 +1353,7 @@ static int rockchip_thermal_remove(struct platform_device *pdev)
>  	for (i = 0; i < thermal->chip->chn_num; i++) {
>  		struct rockchip_thermal_sensor *sensor = &thermal->sensors[i];
>
> +		thermal_remove_hwmon_sysfs(sensor->tzd);
>  		rockchip_thermal_toggle_sensor(sensor, false);
>  	}
>
> --
> 2.24.0
>