linux-kernel - Re: [PATCH V3 3/4] thermal/drivers/tsens: Add support for IPQ5018 tsens

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Message-ID: <cbe6eae5-3490-eb3e-7f28-87ec2c600875@gmail.com>
Date:   Wed, 4 Oct 2023 21:07:35 +0200
From:   Robert Marko <robimarko@...il.com>
To:     Sricharan R <srichara@...-platform-upstream01.qualcomm.com>,
        krzysztof.kozlowski@...aro.org, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org,
        srinivas.kandagatla@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        thara.gopinath@...il.com, rafael@...nel.org,
        daniel.lezcano@...aro.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, dmitry.baryshkov@...aro.org,
        quic_srichara@...cinc.com
Subject: Re: [PATCH V3 3/4] thermal/drivers/tsens: Add support for IPQ5018
 tsens


On 22. 09. 2023. 13:51, Sricharan R wrote:
> From: Sricharan Ramabadhran <quic_srichara@...cinc.com>
>
> IPQ5018 has tsens IP V1.0, 4 sensors and 1 interrupt.
> The soc does not have a RPM, hence tsens has to be reset and
> enabled in the driver init. Adding the driver support for same.
>
> Signed-off-by: Sricharan Ramabadhran <quic_srichara@...cinc.com>
> ---
>   [v3] Fixed Dmitry's comments for error checks in init_ipq5018
>
>   drivers/thermal/qcom/tsens-v1.c | 60 +++++++++++++++++++++++++++++++++
>   drivers/thermal/qcom/tsens.c    |  3 ++
>   drivers/thermal/qcom/tsens.h    |  2 +-
>   3 files changed, 64 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/thermal/qcom/tsens-v1.c b/drivers/thermal/qcom/tsens-v1.c
> index dc1c4ae2d8b0..acee2064f83e 100644
> --- a/drivers/thermal/qcom/tsens-v1.c
> +++ b/drivers/thermal/qcom/tsens-v1.c
> @@ -79,6 +79,18 @@ static struct tsens_features tsens_v1_feat = {
>   	.trip_max_temp	= 120000,
>   };
>   
> +static struct tsens_features tsens_v1_ipq5018_feat = {
> +	.ver_major	= VER_1_X,
> +	.crit_int	= 0,
> +	.combo_int	= 0,
> +	.adc		= 1,
> +	.srot_split	= 1,
> +	.max_sensors	= 11,
> +	.trip_min_temp	= -40000,
> +	.trip_max_temp	= 120000,
> +	.ignore_enable	= 1,
> +};
> +
>   static const struct reg_field tsens_v1_regfields[MAX_REGFIELDS] = {
>   	/* ----- SROT ------ */
>   	/* VERSION */
> @@ -150,6 +162,41 @@ static int __init init_8956(struct tsens_priv *priv) {
>   	return init_common(priv);
>   }
>   
> +static int init_ipq5018(struct tsens_priv *priv)

__init is missing after int, otherwise I get modpost warning while building:
WARNING: modpost: vmlinux: section mismatch in reference: 
init_ipq5018+0x14 (section: .text) -> init_common (section: .init.text)

Regards,
Robert

> +{
> +	int ret;
> +	u32 mask;
> +
> +	ret = init_common(priv);
> +	if (ret < 0) {
> +		dev_err(priv->dev, "Init common failed %d\n", ret);
> +		return ret;
> +	}
> +
> +	ret = regmap_field_write(priv->rf[TSENS_SW_RST], 1);
> +	if (ret) {
> +		dev_err(priv->dev, "Reset failed\n");
> +		return ret;
> +	}
> +
> +	mask = GENMASK(priv->num_sensors, 0);
> +	ret = regmap_field_update_bits(priv->rf[SENSOR_EN], mask, mask);
> +	if (ret) {
> +		dev_err(priv->dev, "Sensor Enable failed\n");
> +		return ret;
> +	}
> +
> +	ret = regmap_field_write(priv->rf[TSENS_EN], 1);
> +	if (ret) {
> +		dev_err(priv->dev, "Enable failed\n");
> +		return ret;
> +	}
> +
> +	ret = regmap_field_write(priv->rf[TSENS_SW_RST], 0);
> +
> +	return ret;
> +}
> +
>   static const struct tsens_ops ops_generic_v1 = {
>   	.init		= init_common,
>   	.calibrate	= calibrate_v1,
> @@ -187,3 +234,16 @@ struct tsens_plat_data data_8976 = {
>   	.feat		= &tsens_v1_feat,
>   	.fields		= tsens_v1_regfields,
>   };
> +
> +const struct tsens_ops ops_ipq5018 = {
> +	.init		= init_ipq5018,
> +	.calibrate	= tsens_calibrate_common,
> +	.get_temp	= get_temp_tsens_valid,
> +};
> +
> +struct tsens_plat_data data_ipq5018 = {
> +	.num_sensors	= 5,
> +	.ops		= &ops_ipq5018,
> +	.feat		= &tsens_v1_ipq5018_feat,
> +	.fields		= tsens_v1_regfields,
> +};
> diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
> index 0a43ccf02ec4..c792b9dc6676 100644
> --- a/drivers/thermal/qcom/tsens.c
> +++ b/drivers/thermal/qcom/tsens.c
> @@ -1101,6 +1101,9 @@ static SIMPLE_DEV_PM_OPS(tsens_pm_ops, tsens_suspend, tsens_resume);
>   
>   static const struct of_device_id tsens_table[] = {
>   	{
> +		.compatible = "qcom,ipq5018-tsens",
> +		.data = &data_ipq5018,
> +	}, {
>   		.compatible = "qcom,ipq8064-tsens",
>   		.data = &data_8960,
>   	}, {
> diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
> index e254cd2df904..b6594b546d11 100644
> --- a/drivers/thermal/qcom/tsens.h
> +++ b/drivers/thermal/qcom/tsens.h
> @@ -645,7 +645,7 @@ extern struct tsens_plat_data data_8960;
>   extern struct tsens_plat_data data_8226, data_8909, data_8916, data_8939, data_8974, data_9607;
>   
>   /* TSENS v1 targets */
> -extern struct tsens_plat_data data_tsens_v1, data_8976, data_8956;
> +extern struct tsens_plat_data data_tsens_v1, data_8976, data_8956, data_ipq5018;
>   
>   /* TSENS v2 targets */
>   extern struct tsens_plat_data data_8996, data_ipq8074, data_tsens_v2;