linux-kernel - Re: [PATCH v6 07/12] thermal: of-thermal: allow setting trip

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Date:	Tue, 23 Feb 2016 10:16:37 +0800
From:	Wei Ni <wni@...dia.com>
To:	<thierry.reding@...il.com>, <edubezval@...il.com>,
	<rui.zhang@...el.com>
CC:	<MLongnecker@...dia.com>, <swarren@...dotorg.org>,
	<mikko.perttunen@...si.fi>, <linux-tegra@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>
Subject: Re: [PATCH v6 07/12] thermal: of-thermal: allow setting trip_temp
 on hardware

Add linux-pm@...r.kernel.org in the CC list.

On 2016年02月22日 16:09, Wei Ni wrote:
> In current of-thermal, the .set_trip_temp only support to
> set trip_temp for SW. But some sensors support to set
> trip_temp on hardware, so that can trigger interrupt,
> shutdown or any other events.
> This patch adds .set_trip_temp() callback in
> thermal_zone_of_device_ops{}, so that the sensor device can
> use it to set trip_temp on hardware.
> 
> Signed-off-by: Wei Ni <wni@...dia.com>
> ---
>  drivers/thermal/of-thermal.c | 8 ++++++++
>  include/linux/thermal.h      | 1 +
>  2 files changed, 9 insertions(+)
> 
> diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
> index be4eedcb839a..fbfc5a52dc27 100644
> --- a/drivers/thermal/of-thermal.c
> +++ b/drivers/thermal/of-thermal.c
> @@ -331,6 +331,14 @@ static int of_thermal_set_trip_temp(struct thermal_zone_device *tz, int trip,
>  	if (trip >= data->ntrips || trip < 0)
>  		return -EDOM;
>  
> +	if (data->ops->set_trip_temp) {
> +		int ret;
> +
> +		ret = data->ops->set_trip_temp(data->sensor_data, trip, temp);
> +		if (ret)
> +			return ret;
> +	}
> +
>  	/* thermal framework should take care of data->mask & (1 << trip) */
>  	data->trips[trip].temperature = temp;
>  
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index e13a1ace50e9..e69296dc583b 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -338,6 +338,7 @@ struct thermal_zone_of_device_ops {
>  	int (*get_temp)(void *, int *);
>  	int (*get_trend)(void *, long *);
>  	int (*set_emul_temp)(void *, int);
> +	int (*set_trip_temp)(void *, int, int);
>  };
>  
>  /**
>