linux-kernel - Re: [PATCH v8 1/9] nvmem: Add a simple NVMEM framework for nvmem providers

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Date:	Thu, 23 Jul 2015 17:26:40 +0200
From:	Stefan Wahren <stefan.wahren@...e.com>
To:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Rob Herring <robh+dt@...nel.org>, Mark Brown <broonie@...nel.org>,
	s.hauer@...gutronix.de, linux-api@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, arnd@...db.de, sboyd@...eaurora.org,
	pantelis.antoniou@...sulko.com, mporter@...sulko.com,
	wxt@...k-chips.com,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [PATCH v8 1/9] nvmem: Add a simple NVMEM framework for nvmem
 providers

Hi Srinivas,

Am 20.07.2015 um 16:43 schrieb Srinivas Kandagatla:
> This patch adds just providers part of the framework just to enable easy
> review.
>
> Up until now, NVMEM drivers like eeprom were stored in drivers/misc,
> where they all had to duplicate pretty much the same code to register
> a sysfs file, allow in-kernel users to access the content of the devices
> they were driving, etc.
>
> This was also a problem as far as other in-kernel users were involved,
> since the solutions used were pretty much different from on driver to
> another, there was a rather big abstraction leak.
>
> This introduction of this framework aims at solving this. It also
> introduces DT representation for consumer devices to go get the data
> they require (MAC Addresses, SoC/Revision ID, part numbers, and so on)
> from the nvmems.
>
> Having regmap interface to this framework would give much better
> abstraction for nvmems on different buses.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> [Maxime Ripard: intial version of eeprom framework]
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> ---
>  drivers/Kconfig                |   2 +
>  drivers/Makefile               |   1 +
>  drivers/nvmem/Kconfig          |  13 ++
>  drivers/nvmem/Makefile         |   6 +
>  drivers/nvmem/core.c           | 384 +++++++++++++++++++++++++++++++++++++++++
>  include/linux/nvmem-consumer.h |  23 +++
>  include/linux/nvmem-provider.h |  47 +++++
>  7 files changed, 476 insertions(+)
>  create mode 100644 drivers/nvmem/Kconfig
>  create mode 100644 drivers/nvmem/Makefile
>  create mode 100644 drivers/nvmem/core.c
>  create mode 100644 include/linux/nvmem-consumer.h
>  create mode 100644 include/linux/nvmem-provider.h

i've tested this patch with my mxs-ocotp driver [1].

So you can add

Tested-by: Stefan Wahren <stefan.wahren@...e.com>

Regards
Stefan
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