linux-kernel - Re: [PATCH 6/6] thermal/drivers/tsens: Add IPQ5332 support

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Date:   Mon, 10 Jul 2023 18:03:50 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Praveenkumar I <quic_ipkumar@...cinc.com>
Cc:     agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        amitk@...nel.org, thara.gopinath@...il.com, rafael@...nel.org,
        daniel.lezcano@...aro.org, rui.zhang@...el.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        quic_varada@...cinc.com
Subject: Re: [PATCH 6/6] thermal/drivers/tsens: Add IPQ5332 support

On Mon, 10 Jul 2023 at 16:47, Praveenkumar I <quic_ipkumar@...cinc.com> wrote:
>
>
> On 7/10/2023 4:54 PM, Dmitry Baryshkov wrote:
> > On 10/07/2023 13:37, Praveenkumar I wrote:
> >> IPQ5332 uses tsens v2.3.3 IP and it is having combined interrupt as
> >> like IPQ8074. But as the SoCs does not have RPM, kernel needs to
> >> take care of sensor enablement and calibration. Hence introduced
> >> new ops and data for IPQ5332 and reused the feature_config from
> >> IPQ8074.
> >>
> >> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> >> ---
> >>   drivers/thermal/qcom/tsens-v2.c | 13 +++++++++++++
> >>   drivers/thermal/qcom/tsens.c    |  3 +++
> >>   drivers/thermal/qcom/tsens.h    |  2 +-
> >>   3 files changed, 17 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/thermal/qcom/tsens-v2.c
> >> b/drivers/thermal/qcom/tsens-v2.c
> >> index db48b1d95348..8b6e3876fd2c 100644
> >> --- a/drivers/thermal/qcom/tsens-v2.c
> >> +++ b/drivers/thermal/qcom/tsens-v2.c
> >> @@ -237,6 +237,19 @@ struct tsens_plat_data data_ipq8074 = {
> >>       .fields    = tsens_v2_regfields,
> >>   };
> >>   +static const struct tsens_ops ops_ipq5332_v2 = {
> >
> > Please drop v2. It is unclear if it refers to tsens being v2 or being
> > specific to ipq5332 v2.
> Sure, will drop v2.
> >
> >> +    .init        = init_common,
> >> +    .get_temp    = get_temp_tsens_valid,
> >> +    .calibrate    = tsens_v2_calibration,
> >> +};
> >> +
> >> +struct tsens_plat_data data_ipq5332 = {
> >> +    .sensors_to_en    = 0xF800,
> >
> > This doesn't seem to match the offsets that you have enabled in the DTSI.
> In order to overcome the DT binding check failure, added all the
> available QFPROM offsets in the DTSI. Else DT binding check failing on
> "nvmem-cell-names".

This is not a way to overcome issues in DT bindings. Please fix DT
bindings instead by using alternatives, enums, etc.

> >
> >> +    .ops        = &ops_ipq5332_v2,
> >> +    .feat        = &ipq8074_feat,
> >> +    .fields        = tsens_v2_regfields,
> >> +};
> >> +
> >>   /* Kept around for backward compatibility with old msm8996.dtsi */
> >>   struct tsens_plat_data data_8996 = {
> >>       .num_sensors    = 13,
> >> diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
> >> index 169690355dad..e8ba2901cda8 100644
> >> --- a/drivers/thermal/qcom/tsens.c
> >> +++ b/drivers/thermal/qcom/tsens.c
> >> @@ -1140,6 +1140,9 @@ static const struct of_device_id tsens_table[] = {
> >>       }, {
> >>           .compatible = "qcom,ipq8074-tsens",
> >>           .data = &data_ipq8074,
> >> +    }, {
> >> +        .compatible = "qcom,ipq5332-tsens",
> >> +        .data = &data_ipq5332,
> >>       }, {
> >>           .compatible = "qcom,mdm9607-tsens",
> >>           .data = &data_9607,
> >> diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
> >> index f8897bc8944e..36040f9beebc 100644
> >> --- a/drivers/thermal/qcom/tsens.h
> >> +++ b/drivers/thermal/qcom/tsens.h
> >> @@ -701,6 +701,6 @@ extern struct tsens_plat_data data_8226,
> >> data_8909, data_8916, data_8939, data_8
> >>   extern struct tsens_plat_data data_tsens_v1, data_8976, data_8956;
> >>     /* TSENS v2 targets */
> >> -extern struct tsens_plat_data data_8996, data_ipq8074, data_tsens_v2;
> >> +extern struct tsens_plat_data data_8996, data_ipq8074, data_ipq5332,
> >> data_tsens_v2;
> >>     #endif /* __QCOM_TSENS_H__ */
> >
> --
> Thanks,
> Praveenkumar



-- 
With best wishes
Dmitry