linux-kernel - Re: [PATCH v4 4/6] thermal: tsens: Add support for SDM845

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Message-ID: <20180702185132.GC2050@tuxbook-pro>
Date:   Mon, 2 Jul 2018 11:51:32 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Amit Kucheria <amit.kucheria@...aro.org>
Cc:     linux-kernel@...r.kernel.org, rnayak@...eaurora.org,
        linux-arm-msm@...r.kernel.org, edubezval@...il.com,
        smohanad@...eaurora.org, vivek.gautam@...eaurora.org,
        andy.gross@...aro.org, Zhang Rui <rui.zhang@...el.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Kees Cook <keescook@...omium.org>, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v4 4/6] thermal: tsens: Add support for SDM845

On Mon 02 Jul 05:44 PDT 2018, Amit Kucheria wrote:

> SDM845 uses v2.4.0 of the TSENS IP block but the get_temp() function
> appears to be identical across v2.x.y in code seen so far. We use the
> generic get_temp() function.
> 

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Regards,
Bjorn

> Signed-off-by: Amit Kucheria <amit.kucheria@...aro.org>
> ---
>  Documentation/devicetree/bindings/thermal/qcom-tsens.txt | 2 ++
>  drivers/thermal/qcom/tsens-v2.c                          | 6 +++++-
>  drivers/thermal/qcom/tsens.c                             | 6 ++++++
>  drivers/thermal/qcom/tsens.h                             | 5 ++++-
>  4 files changed, 17 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/qcom-tsens.txt b/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
> index 06195e8..075182e 100644
> --- a/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
> +++ b/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
> @@ -5,6 +5,8 @@ Required properties:
>   - "qcom,msm8916-tsens" : For 8916 Family of SoCs
>   - "qcom,msm8974-tsens" : For 8974 Family of SoCs
>   - "qcom,msm8996-tsens" : For 8996 Family of SoCs
> + - "qcom,tsens-v2.4.0"  : For SDM845 Family of SoCs
> + - "qcom,tsens-v2"      : Generic fallback binding for any Soc using 2.x.y version of the tsens IP
>  
>  - reg: Address range of the thermal registers
>  - #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.
> diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c
> index 2eca7ff..1871945 100644
> --- a/drivers/thermal/qcom/tsens-v2.c
> +++ b/drivers/thermal/qcom/tsens-v2.c
> @@ -69,8 +69,12 @@ static const struct tsens_ops ops_generic_v2 = {
>  	.get_temp	= get_temp_tsens_v2,
>  };
>  
> +const struct tsens_data data_tsens_v2 = {
> +	.ops            = &ops_generic_v2,
> +};
> +
> +/* Kept around for backward compatibility with old msm8996.dtsi */
>  const struct tsens_data data_8996 = {
>  	.num_sensors	= 13,
>  	.ops		= &ops_generic_v2,
>  };
> -
> diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
> index 3440166c..992ed17 100644
> --- a/drivers/thermal/qcom/tsens.c
> +++ b/drivers/thermal/qcom/tsens.c
> @@ -72,6 +72,12 @@ static const struct of_device_id tsens_table[] = {
>  	}, {
>  		.compatible = "qcom,msm8996-tsens",
>  		.data = &data_8996,
> +	}, {
> +		.compatible = "qcom,tsens-v2.4.0",
> +		.data = &data_tsens_v2,
> +	}, {
> +		.compatible = "qcom,tsens-v2",
> +		.data = &data_tsens_v2,
>  	},
>  	{}
>  };
> diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
> index dc56e1e..69212cb 100644
> --- a/drivers/thermal/qcom/tsens.h
> +++ b/drivers/thermal/qcom/tsens.h
> @@ -87,6 +87,9 @@ void compute_intercept_slope(struct tsens_device *, u32 *, u32 *, u32);
>  int init_common(struct tsens_device *);
>  int get_temp_common(struct tsens_device *, int, int *);
>  
> -extern const struct tsens_data data_8916, data_8974, data_8960, data_8996;
> +/* TSENS v1 targets */
> +extern const struct tsens_data data_8916, data_8974, data_8960;
> +/* TSENS v2 targets */
> +extern const struct tsens_data data_8996, data_tsens_v2;
>  
>  #endif /* __QCOM_TSENS_H__ */
> -- 
> 2.7.4
>