linux-kernel - Re: [PATCH 1/6] soundwire: qcom: add support to missing transport params

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Date:   Mon, 1 Feb 2021 10:33:09 -0600
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        vkoul@...nel.org
Cc:     yung-chuan.liao@...ux.intel.com, sanyog.r.kale@...el.com,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH 1/6] soundwire: qcom: add support to missing transport
 params


>>>   struct qcom_swrm_port_config {
>>>       u8 si;
>>>       u8 off1;
>>>       u8 off2;
>>>       u8 bp_mode;
>>> +    u8 hstart;
>>> +    u8 hstop;
>>> +    u8 word_length;
>>> +    u8 bgp_count;
>>
>> I couldn't figure out what 'bgp' was and had to search. Not sure how 
>> you came up with this abbreviation of "qcom,ports-block-group-count". 
>> Adding a comment wouldn't hurt.
> 
> I will rename this to blk_group_count which makes more sense!

sounds good.


>>
>>> +    u8 lane_control;
>>
>> Are you able to use lane_control != 0 ? I thought we were missing 
>> stuff at the bus.c level?
> Am not sure what is missing in bus.c but we do use lane_control for RX 
> slave on WCD938x codec. This uses datalane 1 for HPH and lane0 for 
> Compander/Class-H and other ports.
> 
> And it works!

Ah, good to know, thanks for the pointer.