[v11,7/7] pinctrl: qcom: Update clock voting as optional

Update bulk clock voting to optional voting as ADSP bypass platform doesn't
need macro and decodec clocks, as these macro and dcodec GDSC switches are
maintained as power domains and operated from lpass clock drivers.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Co-developed-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Signed-off-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
---
 drivers/pinctrl/qcom/pinctrl-lpass-lpi.c        | 12 +++++++++---
 drivers/pinctrl/qcom/pinctrl-lpass-lpi.h        |  1 +
 drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c |  1 +
 3 files changed, 11 insertions(+), 3 deletions(-)

On 3/15/2022 10:27 PM, Bjorn Andersson wrote:
Thanks for your time Bjorn!!!
> On Tue 15 Mar 10:50 CDT 2022, Srinivasa Rao Mandadapu wrote:
>
>> Update bulk clock voting to optional voting as ADSP bypass platform doesn't
>> need macro and decodec clocks, as these macro and dcodec GDSC switches are
>> maintained as power domains and operated from lpass clock drivers.
>>
> Sorry for missing your reply on my question on the previous version, I
> think this sounds reasonable.
Okay. Thanks!!!
>
>> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
>> Co-developed-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
>> Signed-off-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
>> ---
>>   drivers/pinctrl/qcom/pinctrl-lpass-lpi.c        | 12 +++++++++---
>>   drivers/pinctrl/qcom/pinctrl-lpass-lpi.h        |  1 +
>>   drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c |  1 +
>>   3 files changed, 11 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
>> index 0216ca1..3fc473a 100644
>> --- a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
>> +++ b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
>> @@ -401,9 +401,15 @@ int lpi_pinctrl_probe(struct platform_device *pdev)
>>   		return dev_err_probe(dev, PTR_ERR(pctrl->slew_base),
>>   				     "Slew resource not provided\n");
>>   
>> -	ret = devm_clk_bulk_get(dev, MAX_LPI_NUM_CLKS, pctrl->clks);
>> -	if (ret)
>> -		return dev_err_probe(dev, ret, "Can't get clocks\n");
>> +	if (data->is_clk_optional) {
>> +		ret = devm_clk_bulk_get_optional(dev, MAX_LPI_NUM_CLKS, pctrl->clks);
>> +		if (ret)
>> +			return dev_err_probe(dev, ret, "Can't get clocks\n");
> Dug into the clk_bulk_get() functions, and __clk_bulk_get() will print
> an error telling you which clock it failed to get. So I don't think your
> more generic error here doesn't add any value.
>
> Just return ret;
Okay will change accordingly.
>
>> +	} else {
>> +		ret = devm_clk_bulk_get(dev, MAX_LPI_NUM_CLKS, pctrl->clks);
>> +		if (ret)
>> +			return dev_err_probe(dev, ret, "Can't get clocks\n");
>> +	}
> Depending on your taste, you could do:
>
> 	if (data->is_clk_optional)
> 		ret = devm_clk_bulk_get_optional();
> 	else
> 		ret = devm_clk_bulk_get();
>
> 	if (ret)
> 		return ret;
Okay. Will change accordingly.
>>   
>>   	ret = clk_bulk_prepare_enable(MAX_LPI_NUM_CLKS, pctrl->clks);
>>   	if (ret)
>> diff --git a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.h b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.h
>> index afbac2a..3bcede6 100644
>> --- a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.h
>> +++ b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.h
>> @@ -77,6 +77,7 @@ struct lpi_pinctrl_variant_data {
>>   	int ngroups;
>>   	const struct lpi_function *functions;
>>   	int nfunctions;
>> +	int is_clk_optional;
> bool here please.
Okay. Will update.
>
>>   };
>>   
>>   int lpi_pinctrl_probe(struct platform_device *pdev);
>> diff --git a/drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c
>> index d67ff25..304d8a2 100644
>> --- a/drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c
>> +++ b/drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c
>> @@ -142,6 +142,7 @@ static const struct lpi_pinctrl_variant_data sc7280_lpi_data = {
>>   	.ngroups = ARRAY_SIZE(sc7280_groups),
>>   	.functions = sc7280_functions,
>>   	.nfunctions = ARRAY_SIZE(sc7280_functions),
>> +	.is_clk_optional = 1,
> true
Okay.
>
> Regards,
> Bjorn
>
>>   };
>>   
>>   static const struct of_device_id lpi_pinctrl_of_match[] = {
>> -- 
>> 2.7.4
>>