linux-kernel - Re: [PATCH V3 3/4] thermal: qcom: Add support for multiple generations of devices

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Message-ID: <7e659952-98b0-bfcd-1087-cdd0538d2250@quicinc.com>
Date:   Sun, 23 Jan 2022 20:20:02 +0530
From:   Jishnu Prakash <quic_jprakash@...cinc.com>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        <agross@...nel.org>, <bjorn.andersson@...aro.org>,
        <devicetree@...r.kernel.org>, <mka@...omium.org>,
        <robh+dt@...nel.org>, <knaack.h@....de>, <lars@...afoo.de>,
        <pmeerw@...erw.net>, <manivannan.sadhasivam@...aro.org>,
        <linus.walleij@...aro.org>, <quic_kgunda@...cinc.com>,
        <quic_aghayal@...cinc.com>, <daniel.lezcano@...aro.org>,
        <rui.zhang@...el.com>, <quic_subbaram@...cinc.com>,
        <jic23@...nel.org>, <amitk@...nel.org>,
        Thara Gopinath <thara.gopinath@...aro.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        <linux-pm@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <linux-arm-msm-owner@...r.kernel.org>, <linux-iio@...r.kernel.org>
Subject: Re: [PATCH V3 3/4] thermal: qcom: Add support for multiple
 generations of devices

Hi Dmitry,


On 11/29/2021 7:55 AM, Dmitry Baryshkov wrote:
> On 23/11/2021 08:57, Jishnu Prakash wrote:
>> Refactor code to support multiple generations of ADC_TM devices
>> by defining gen number, irq name and disable, configure and isr
>> APIs in the individual data structs.
>>
>> Signed-off-by: Jishnu Prakash <quic_jprakash@...cinc.com>
>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
>
> Minor question below.
>
>> ---
>>   drivers/thermal/qcom/qcom-spmi-adc-tm5.c | 76 
>> ++++++++++++++++++++------------
>>   1 file changed, 48 insertions(+), 28 deletions(-)
>>
>> diff --git a/drivers/thermal/qcom/qcom-spmi-adc-tm5.c 
>> b/drivers/thermal/qcom/qcom-spmi-adc-tm5.c
>> index 824671c..fc8cd45 100644
>> --- a/drivers/thermal/qcom/qcom-spmi-adc-tm5.c
>> +++ b/drivers/thermal/qcom/qcom-spmi-adc-tm5.c
>> @@ -78,11 +78,10 @@ enum adc5_timer_select {
>>       ADC5_TIMER_SEL_NONE,
>>   };
>>   -struct adc_tm5_data {
>> -    const u32    full_scale_code_volt;
>> -    unsigned int    *decimation;
>> -    unsigned int    *hw_settle;
>> -    bool        is_hc;
>> +enum adc5_gen {
>> +    ADC_TM5,
>> +    ADC_TM_HC,
>> +    ADC_TM5_MAX
>>   };
>>     enum adc_tm5_cal_method {
>> @@ -92,6 +91,18 @@ enum adc_tm5_cal_method {
>>   };
>>     struct adc_tm5_chip;
>> +struct adc_tm5_channel;
>> +
>> +struct adc_tm5_data {
>> +    const u32 full_scale_code_volt;
>> +    unsigned int *decimation;
>> +    unsigned int *hw_settle;
>> +    int (*disable_channel)(struct adc_tm5_channel *channel);
>> +    int (*configure)(struct adc_tm5_channel *channel, int low, int 
>> high);
>> +    irqreturn_t (*isr)(int irq, void *data);
>> +    char *irq_name;
>> +    int gen;
>> +};
>
> Any reason for moving the adc_tm5_data definition? It is still prefix 
> with the adc_tmp5_channel declaration.


There's no strong reason, I just thought it would look better to keep 
all the major struct definitions together after the enum definitions.


>
>>     /**
>>    * struct adc_tm5_channel - ADC Thermal Monitoring channel data.
>> @@ -139,22 +150,6 @@ struct adc_tm5_chip {
>>       u16            base;
>>   };
>>   -static const struct adc_tm5_data adc_tm5_data_pmic = {
>> -    .full_scale_code_volt = 0x70e4,
>> -    .decimation = (unsigned int []) { 250, 420, 840 },
>> -    .hw_settle = (unsigned int []) { 15, 100, 200, 300, 400, 500, 
>> 600, 700,
>> -                     1000, 2000, 4000, 8000, 16000, 32000,
>> -                     64000, 128000 },
>> -};
>> -
>> -static const struct adc_tm5_data adc_tm_hc_data_pmic = {
>> -    .full_scale_code_volt = 0x70e4,
>> -    .decimation = (unsigned int []) { 256, 512, 1024 },
>> -    .hw_settle = (unsigned int []) { 0, 100, 200, 300, 400, 500, 
>> 600, 700,
>> -                     1000, 2000, 4000, 6000, 8000, 10000 },
>> -    .is_hc = true,
>> -};
>> -

Thanks,

Jishnu