netdev - Re: [PATCH 00/14] ARM: davinci: step towards removing at24_platform

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Date:   Wed, 27 Jun 2018 11:40:42 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Sekhar Nori <nsekhar@...com>, Kevin Hilman <khilman@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Grygorii Strashko <grygorii.strashko@...com>,
        "David S . Miller" <davem@...emloft.net>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Lukas Wunner <lukas@...ner.de>, Rob Herring <robh@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>,
        David Lechner <david@...hnology.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-omap@...r.kernel.org, netdev@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH 00/14] ARM: davinci: step towards removing at24_platform_data

2018-06-26 15:38 GMT+02:00 Bartosz Golaszewski <brgl@...ev.pl>:
> 2018-06-26 15:21 GMT+02:00 Andrew Lunn <andrew@...n.ch>:
>>> I see. I see it this way: the setup callback comes from the time when
>>> we didn't have nvmem and should go away. I will protest loud whenever
>>> someone will try to use it again and will work towards removing it as
>>> soon as possible.
>>
>> The setup() callback could be moved into the nvmem framework, rather
>> than in the at24 driver. Make the call when the cells have been
>> connected to the backing store.
>>
>
> This would at least make it more generic. And maybe I could also get
> rid of the setup callback from the mityomapl138 board file.
>
> Bart
>
>>> I will give your problem a thought and will try to get back with some
>>> proposals - maybe we should, as you suggested, extend nvmem even
>>> further to allow to remove nvmem info entries etc.
>>
>> That does not help me too much. I have the same problem with i2c and
>> MDIO. So i actually prefer to keep this the same as all others.
>>
>>         Andrew

Hi Andrew,

MTD subsystem has the struct mtd_notifier and register_mtd_user(). I'm
wondering if we could implement something like this as a generic nvmem
functionality.

What do you think?

Bart