linux-kernel - Re: [PATCH v0 00/14] Make I2C terminology more inclusive for I2C Algobit and consumers

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Date: Fri, 5 Apr 2024 12:18:37 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: Easwar Hariharan <eahariha@...ux.microsoft.com>
Cc: 
	"open list:RADEON and AMDGPU DRM DRIVERS" <amd-gfx@...ts.freedesktop.org>, "open list:DRM DRIVERS" <dri-devel@...ts.freedesktop.org>, 
	open list <linux-kernel@...r.kernel.org>, 
	"open list:INTEL DRM DISPLAY FOR XE AND I915 DRIVERS" <intel-gfx@...ts.freedesktop.org>, 
	"open list:INTEL DRM DISPLAY FOR XE AND I915 DRIVERS" <intel-xe@...ts.freedesktop.org>, 
	"open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS" <nouveau@...ts.freedesktop.org>, 
	"open list:I2C SUBSYSTEM HOST DRIVERS" <linux-i2c@...r.kernel.org>, 
	"open list:BTTV VIDEO4LINUX DRIVER" <linux-media@...r.kernel.org>, "open list:FRAMEBUFFER LAYER" <linux-fbdev@...r.kernel.org>
Subject: Re: [PATCH v0 00/14] Make I2C terminology more inclusive for I2C
 Algobit and consumers

Hello Easwar,

On Fri, Mar 29, 2024 at 05:00:24PM +0000, Easwar Hariharan wrote:
> I2C v7, SMBus 3.2, and I3C specifications have replaced "master/slave"
> with more appropriate terms. Inspired by and following on to Wolfram's
> series to fix drivers/i2c/[1], fix the terminology for users of the
> I2C_ALGOBIT bitbanging interface, now that the approved verbiage exists
> in the specification.

I really appreciate that you want to assist in this task to improve the
I2C core. I do. I am afraid, however, that you took the second step
before the first one, though. As I mentioned in my original cover
letter, this is not only about renaming but also improving the I2C API
(splitting up header files...). So, drivers are not a priority right
now. They can be better fixed once the core is ready.

It is true that I changed quite some controller drivers within the i2c
realm. I did this to gain experience. As you also noticed quite some
questions came up. We need to agree on answers first. And once we are
happy with the answers we found, then IMO we can go outside of the i2c
realm and send patches to other subsystems referencing agreed
precedence. I intentionally did not go outside i2c yet. Since your
patches are already there, you probably want to foster them until they
are ready for inclusion. Yet, regarding further patches, my suggestion
is to wait until the core is ready. That might take a while, though.
However, there is enough to discuss until the core is ready. So, your
collaboration there is highly appreciated!

> The last patch updating the .master_xfer method to .xfer depends on
> patch 1 of Wolfram's series below, but the series is otherwise
> independent. It may make sense for the last patch to go in with

Please drop the last patch from this series. It will nicely remove the
dependency. Also, like above, I first want to gain experience with i2c
before going to other subsystems. That was intended.

All the best and happy hacking,

   Wolfram

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