linux-kernel - Re: [PATCH v10 2/8] drivers: thermal: tsens: Don't hardcode sensor slope

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Date:   Thu, 18 Mar 2021 17:15:15 -0400
From:   Thara Gopinath <thara.gopinath@...aro.org>
To:     Ansuel Smith <ansuelsmth@...il.com>,
        Amit Kucheria <amitk@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v10 2/8] drivers: thermal: tsens: Don't hardcode sensor
 slope



On 2/17/21 2:40 PM, Ansuel Smith wrote:
> Function compute_intercept_slope hardcode the sensor slope to
> SLOPE_DEFAULT. Change this and use the default value only if a slope is
> not defined. This is needed for tsens VER_0 that has a hardcoded slope
> table.
> 
> Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>

Reviewed-by: Thara Gopinath <thara.gopinath@...aro.org>

Warm Regards
Thara

> ---
>   drivers/thermal/qcom/tsens.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
> index f9126909892b..842f518fdf84 100644
> --- a/drivers/thermal/qcom/tsens.c
> +++ b/drivers/thermal/qcom/tsens.c
> @@ -86,7 +86,8 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *p1,
>   			"%s: sensor%d - data_point1:%#x data_point2:%#x\n",
>   			__func__, i, p1[i], p2[i]);
>   
> -		priv->sensor[i].slope = SLOPE_DEFAULT;
> +		if (!priv->sensor[i].slope)
> +			priv->sensor[i].slope = SLOPE_DEFAULT;
>   		if (mode == TWO_PT_CALIB) {
>   			/*
>   			 * slope (m) = adc_code2 - adc_code1 (y2 - y1)/
> 

-- 
Warm Regards
Thara