Re: [PATCH v7 0/7] i2c-atr and FPDLink

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On 18/01/2023 18:01, Andy Shevchenko wrote:
On Wed, Jan 18, 2023 at 02:40:24PM +0200, Tomi Valkeinen wrote:
Hi,

You can find the v6 from:

https://lore.kernel.org/all/20230105140307.272052-1-tomi.valkeinen@xxxxxxxxxxxxxxxx/

Main changes:

* i2c-atr: Use bus notifier. This allows us to drop the patch that adds
   the attach_client/detach_client callbacks. On the downside, it removes
   the option for error handling if the translation setup fails, and also
   doesn't provide us the pointer to the i2c_board_info. I belive both
   are acceptable downsides.

* Use fwnode in the fpdlink drivers instead of OF

* Addressed all the review comments (I hope)

* Lots of cosmetic or minor fixes which I came up while doing the fwnode
   change

I believe my comments to the first driver applies to the next two, so please
address them whenever you are agree / it's possible / it makes sense.

About ATR implementation. We have the i2c bus (Linux representation of
the driver model) and i2c_adapter and i2c_client objects there. Can't we
have an i2c_client_aliased in similar way and be transparent with users?

Can you clarify what you mean here?

The i2c_clients are not aware of the i2c-atr. They are normal i2c clients. The FPD-Link drivers are aware of the ATR, as the FPD-Link hardware contains the ATR support.

 Tomi




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