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

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Date:   Mon, 1 Feb 2021 15:50:18 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        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



On 29/01/2021 19:20, Pierre-Louis Bossart wrote:
> 
>>   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!

> 
>> +    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!

--srini
>