[PATCH] thermal: mediatek: add sensors-support

[PATCH] thermal: mediatek: add sensors-support

[Frank Wunderlich]

From: Frank Wunderlich <frank-w@public-files.de>

add HWMON-support to mediateks thermanl driver to allow lm-sensors
userspace tools read soc temperature

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
---
 drivers/thermal/mtk_thermal.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
index 149c6d7fd5a0..e22d77d57458 100644
--- a/drivers/thermal/mtk_thermal.c
+++ b/drivers/thermal/mtk_thermal.c
@@ -23,6 +23,8 @@
 #include <linux/reset.h>
 #include <linux/types.h>
 
+#include "thermal_hwmon.h"
+
 /* AUXADC Registers */
 #define AUXADC_CON1_SET_V	0x008
 #define AUXADC_CON1_CLR_V	0x00c
@@ -983,6 +985,13 @@ static void mtk_thermal_release_periodic_ts(struct mtk_thermal *mt,
 	writel((tmp & (~0x10e)), mt->thermal_base + TEMP_MSRCTL1);
 }
 
+static void mtk_thermal_hwmon_action(void *data)
+{
+	struct thermal_zone_device *zone = data;
+
+	thermal_remove_hwmon_sysfs(zone);
+}
+
 static int mtk_thermal_probe(struct platform_device *pdev)
 {
 	int ret, i, ctrl_id;
@@ -1087,6 +1096,19 @@ static int mtk_thermal_probe(struct platform_device *pdev)
 		goto err_disable_clk_peri_therm;
 	}
 
+#ifdef CONFIG_THERMAL_HWMON
+	tzdev->tzp->no_hwmon = false;
+	ret = thermal_add_hwmon_sysfs(tzdev);
+	if (ret)
+		dev_err(&pdev->dev, "error in thermal_add_hwmon_sysfs");
+
+	ret = devm_add_action(&pdev->dev, mtk_thermal_hwmon_action, tzdev);
+	if (ret) {
+		dev_err(&pdev->dev, "error in devm_add_action");
+		mtk_thermal_hwmon_action(tzdev);
+	}
+#endif
+
 	return 0;
 
 err_disable_clk_peri_therm:
-- 
2.25.1


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Aw: [PATCH] thermal: mediatek: add sensors-support

[Frank Wunderlich]

Hi,

any opinion (except typo)?

thermanl => thermal

regards Frank


> Gesendet: Samstag, 20. März 2021 um 10:06 Uhr
> Von: "Frank Wunderlich" <linux@fw-web.de>
> add HWMON-support to mediateks thermanl driver to allow lm-sensors
> userspace tools read soc temperature


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Re: [PATCH] thermal: mediatek: add sensors-support

[Daniel Lezcano]

On 20/03/2021 09:06, Frank Wunderlich wrote:
> From: Frank Wunderlich <frank-w@public-files.de>
> 
> add HWMON-support to mediateks thermanl driver to allow lm-sensors
> userspace tools read soc temperature
> 
> Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
> ---
>  drivers/thermal/mtk_thermal.c | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
> index 149c6d7fd5a0..e22d77d57458 100644
> --- a/drivers/thermal/mtk_thermal.c
> +++ b/drivers/thermal/mtk_thermal.c
> @@ -23,6 +23,8 @@
>  #include <linux/reset.h>
>  #include <linux/types.h>
>  
> +#include "thermal_hwmon.h"
> +
>  /* AUXADC Registers */
>  #define AUXADC_CON1_SET_V	0x008
>  #define AUXADC_CON1_CLR_V	0x00c
> @@ -983,6 +985,13 @@ static void mtk_thermal_release_periodic_ts(struct mtk_thermal *mt,
>  	writel((tmp & (~0x10e)), mt->thermal_base + TEMP_MSRCTL1);
>  }
>  
> +static void mtk_thermal_hwmon_action(void *data)
> +{
> +	struct thermal_zone_device *zone = data;
> +
> +	thermal_remove_hwmon_sysfs(zone);
> +}
> +
>  static int mtk_thermal_probe(struct platform_device *pdev)
>  {
>  	int ret, i, ctrl_id;
> @@ -1087,6 +1096,19 @@ static int mtk_thermal_probe(struct platform_device *pdev)
>  		goto err_disable_clk_peri_therm;
>  	}
>  
> +#ifdef CONFIG_THERMAL_HWMON

No #ifdef in C file.

> +	tzdev->tzp->no_hwmon = false;
> +	ret = thermal_add_hwmon_sysfs(tzdev);
> +	if (ret)
> +		dev_err(&pdev->dev, "error in thermal_add_hwmon_sysfs");
> +
> +	ret = devm_add_action(&pdev->dev, mtk_thermal_hwmon_action, tzdev);

devm_thermal_add_hwmon_sysfs() ?

> +	if (ret) {
> +		dev_err(&pdev->dev, "error in devm_add_action");
> +		mtk_thermal_hwmon_action(tzdev);
> +	}
> +#endif
> +
>  	return 0;
>  
>  err_disable_clk_peri_therm:
> 


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Aw: Re: [PATCH] thermal: mediatek: add sensors-support

[Frank Wunderlich]

Hi,

> Gesendet: Dienstag, 20. April 2021 um 14:07 Uhr
> Von: "Daniel Lezcano" <daniel.lezcano@linaro.org>

> No #ifdef in C file.
...

> devm_thermal_add_hwmon_sysfs() ?

based on your comments this should be enough/right?

#if IS_ENABLED(CONFIG_THERMAL_HWMON)
    tzdev->tzp->no_hwmon = false;
    ret = devm_thermal_add_hwmon_sysfs(tzdev);
    if (ret)
        dev_err(&pdev->dev, "error in thermal_add_hwmon_sysfs");
#endif

if yes i send out v2, at least it works on my device

regards Frank



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Re: Aw: Re: [PATCH] thermal: mediatek: add sensors-support

[Daniel Lezcano]

Hi Frank,

On 20/04/2021 16:59, Frank Wunderlich wrote:
> Hi,
> 
>> Gesendet: Dienstag, 20. April 2021 um 14:07 Uhr
>> Von: "Daniel Lezcano" <daniel.lezcano@linaro.org>
> 
>> No #ifdef in C file.
> ...
> 
>> devm_thermal_add_hwmon_sysfs() ?
> 
> based on your comments this should be enough/right?
> 
> #if IS_ENABLED(CONFIG_THERMAL_HWMON)
>     tzdev->tzp->no_hwmon = false;>     ret = devm_thermal_add_hwmon_sysfs(tzdev);
>     if (ret)
>         dev_err(&pdev->dev, "error in thermal_add_hwmon_sysfs");
> #endif
> 
> if yes i send out v2, at least it works on my device

just the following lines should work:

	ret = devm_thermal_add_hwmon_sysfs(tzdev);
	if (ret)
		dev_err(&pdev->dev, "error in thermal_add_hwmon_sysfs");


The no_hwmon usage is a bit fuzzy in the thermal core code.


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Re: Aw: Re: [PATCH] thermal: mediatek: add sensors-support

[Frank Wunderlich]

Am 20. April 2021 17:18:32 MESZ schrieb Daniel Lezcano <daniel.lezcano@linaro.org>:
>
>Hi Frank,

>The no_hwmon usage is a bit fuzzy in the thermal core code.

Maybe add depency in Kconfig? Else we can get undefined symbols on linking

regards Frank

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Re: Aw: Re: [PATCH] thermal: mediatek: add sensors-support

[Daniel Lezcano]

On 20/04/2021 17:24, Frank Wunderlich wrote:
> Am 20. April 2021 17:18:32 MESZ schrieb Daniel Lezcano <daniel.lezcano@linaro.org>:
>>
>> Hi Frank,
> 
>> The no_hwmon usage is a bit fuzzy in the thermal core code.
> 
> Maybe add depency in Kconfig? Else we can get undefined symbols on linking
> 
> regards Frank

Nope, there are the stubs in thermal_hwmon.h



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