linux-kernel - Re: [PATCH v1 08/10] thermal: tsens: Get rid of 'id' field

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Message-ID: <20180809205519.GP160295@google.com>
Date:   Thu, 9 Aug 2018 13:55:19 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Amit Kucheria <amit.kucheria@...aro.org>
Cc:     linux-kernel@...r.kernel.org, rnayak@...eaurora.org,
        linux-arm-msm@...r.kernel.org, bjorn.andersson@...aro.org,
        edubezval@...il.com, smohanad@...eaurora.org,
        andy.gross@...aro.org, dianders@...omium.org,
        Zhang Rui <rui.zhang@...el.com>, linux-pm@...r.kernel.org
Subject: Re: [PATCH v1 08/10] thermal: tsens: Get rid of 'id' field

On Thu, Aug 09, 2018 at 06:02:40PM +0530, Amit Kucheria wrote:
> The hw_id field in 'struct tsens_sensor' can do the job of tracking
> unique ids for each sensor connected to each tsens device instance. It
> also allows hw_ids to be overridden (e.g. 8916) in cases where some
> sensors in a sequence are disabled on a particular platform.
> 
> Use the hw_id field instead of the id field consistently across the
> tsens code.
> 
> While, we're at it, document the fields of struct tsens_sensor.
> 
> Signed-off-by: Amit Kucheria <amit.kucheria@...aro.org>
> ---
>  drivers/thermal/qcom/tsens.c |  5 ++---
>  drivers/thermal/qcom/tsens.h | 10 +++++++++-
>  2 files changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
> index 9a8e8f7b4ae1..fb728ec5d77f 100644
> --- a/drivers/thermal/qcom/tsens.c
> +++ b/drivers/thermal/qcom/tsens.c
> @@ -17,7 +17,7 @@ static int tsens_get_temp(void *data, int *temp)
>  	const struct tsens_sensor *s = data;
>  	struct tsens_device *tmdev = s->tmdev;
>  
> -	return tmdev->ops->get_temp(tmdev, s->id, temp);
> +	return tmdev->ops->get_temp(tmdev, s->hw_id, temp);
>  }
>  
>  static int tsens_get_trend(void *p, int trip, enum thermal_trend *trend)
> @@ -26,7 +26,7 @@ static int tsens_get_trend(void *p, int trip, enum thermal_trend *trend)
>  	struct tsens_device *tmdev = s->tmdev;
>  
>  	if (tmdev->ops->get_trend)
> -		return  tmdev->ops->get_trend(tmdev, s->id, trend);
> +		return  tmdev->ops->get_trend(tmdev, s->hw_id, trend);
>  
>  	return -ENOTSUPP;
>  }
> @@ -83,7 +83,6 @@ static int tsens_register(struct tsens_device *tmdev)
>  
>  	for (i = 0;  i < tmdev->num_sensors; i++) {
>  		tmdev->sensor[i].tmdev = tmdev;
> -		tmdev->sensor[i].id = i;
>  		tzd = devm_thermal_zone_of_sensor_register(tmdev->dev, i,
>  							   &tmdev->sensor[i],
>  							   &tsens_of_ops);
> diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
> index b9c4bcf255fa..2a3174dfc1a9 100644
> --- a/drivers/thermal/qcom/tsens.h
> +++ b/drivers/thermal/qcom/tsens.h
> @@ -14,11 +14,19 @@
>  
>  struct tsens_device;
>  
> +/**
> + * struct tsens_sensor - sensor-specific data
> + * @tmdev: tsens device instance this sensor is connected to
> + * @tzd: thermal zone corresponding to this sensor
> + * @offset: offset from calibration data to convert ADC data to degrees
> + * @hw_id: unique sensor ID for each sensor connected to tsens device instance
> + * @slope: slope from calibration data to convert ADC data to degrees
> + * @status: 8960-specific status register addresses
> + */
>  struct tsens_sensor {
>  	struct tsens_device		*tmdev;
>  	struct thermal_zone_device	*tzd;
>  	int				offset;
> -	int				id;
>  	int				hw_id;
>  	int				slope;
>  	u32				status;

Reviewed-by: Matthias Kaehlcke <mka@...omium.org>