Re: [RFC PATCH] Soundwire: Initialize multi_link with fwnode props

[Pierre-Louis Bossart]

On 8/15/22 06:28, Khalid Masum wrote:
> On 8/15/22 00:46, Andy Shevchenko wrote:
>> On Sun, Aug 14, 2022 at 11:31 AM Khalid Masum
>> <khalid.masum.92@xxxxxxxxx> wrote:
>>>
>>> According to the TODO, In sw_bus_master_add, bus->multi_link is to be
>>> populated with properties from FW node props. Make this happen by
>>> creating a new fwnode_handle flag FWNODE_FLAG_MULTI_LINKED and use
>>> the flag to store the multi_link value from intel_link_startup. Use
>>> this flag to initialize bus->multi_link.
>>
>> ...
>>
>>>          /*
>>>           * Initialize multi_link flag
>>> -        * TODO: populate this flag by reading property from FW node
>>>           */
>>> -       bus->multi_link = false;
>>> +       bus->multi_link = (fwnode->flags & FWNODE_FLAG_MULTI_LINKED)
>>> +               == FWNODE_FLAG_MULTI_LINKED;
>>
>> NAK (as far as I understood the context of the comment and the change
>> itself).
>>
>> These flags are for devlink, we do not mix FW properties with those
>> internal flags anyhow. The comment suggests that this should be az
>> property. Also commit message doesn't explain the relation to devlink.
>>
> That is a good information to know. Thanks.
> 
> I shall try to find out if I can somehow get multi_link's value from
> fwnode in any other way and look into devlink in the process.
> 
> If you have any suggestions regarding this TODO, please let me know.

The suggestion is to remove the TODO and leave the code as is: the
capabilities enabled for multi-link are required as part of the
programming sequences, even when a stream uses a single link we still
use the syncArm/syncGo sequences.

Please don't change this.