netdev - Re: [PATCH] drivers: net: phy: mdio-mux: Add support for Generic Mux controls

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Date:   Thu, 21 Feb 2019 16:17:44 +0000
From:   Peter Rosin <peda@...ntia.se>
To:     Andrew Lunn <andrew@...n.ch>, Pankaj Bansal <pankaj.bansal@....com>
CC:     Leo Li <leoyang.li@....com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] drivers: net: phy: mdio-mux: Add support for Generic Mux
 controls

On 2019-02-21 16:17, Andrew Lunn wrote:
>>>>  config MDIO_BUS_MUX
>>>>  	tristate
>>>>  	depends on OF_MDIO
>>>> +	select MULTIPLEXER
>>>>  	help
>>>>  	  This module provides a driver framework for MDIO bus
>>>>  	  multiplexers which connect one of several child MDIO busses
>>>
>>> Hi Pankaj
>>>
>>> Please add a MDIO_BUS_MUX_MULTIPLEXER and put all the code into mdio-
>>> mux-multiplexer.c
>>
>> Isn't MUX short for MULTIPLEXER ? wouldn't this be more confusing ?
> 
> Look at the pattern:
> 
> config MDIO_BUS_MUX
> config MDIO_BUS_MUX_BCM_IPROC
> config MDIO_BUS_MUX_GPIO
> config MDIO_BUS_MUX_MMIOREG
> 
> You are adding another sort of MUX, A Mux that uses a kernel
> Multiplexer.  Hence the name should be MDIO_BUS_MUX_MULTIPLEXER.
> 
> You can try to avoid confusion by using good help text:
> 
>   	help This module provides a driver for MDIO bus multiplexer
> 	  that is controlled via the kernel multiplexer subsystem. The
> 	  bus multiplexer connects one of several child MDIO busses to
> 	  a parent bus.  Child bus selection is under the control of
> 	  the kernel multiplexer subsystem.
> 
> This test basically follows the other MDIO multiplexers.

The same "problem" happened for I2C muxes, and there the driver
ended up being "i2c-mux-gpmux" with config symbol I2C_MUX_GPMUX, with
GP being short for general purpose.

If that matters...

Cheers,
Peter