linux-kernel - [PatchV2 0/6] Convert exiting EEPROM drivers to NVMEM

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Date:	Mon, 21 Dec 2015 09:21:07 +0100
From:	Andrew Lunn <andrew@...n.ch>
To:	GregKH <greg@...ah.com>, srinivas.kandagatla@...aro.org,
	maxime.ripard@...e-electrons.com, wsa@...-dreams.de,
	broonie@...nel.org, vz@...ia.com
Cc:	afd@...com, linux-kernel@...r.kernel.org,
	pantelis.antoniou@...sulko.com, Andrew Lunn <andrew@...n.ch>
Subject: [PatchV2 0/6] Convert exiting EEPROM drivers to NVMEM

This patch set converts the old EEPROM drivers in driver/misc/eeprom to
use the NVMEM framework. These drivers export there content in /sys as
read only to root, since the EEPROM may contain sensitive information.
So the first patch adds a flag so the NVMEM framework will create its
file in /sys as root read only.

To keep backwards compatibility with these older drivers, the contents
of the EEPROM must be exports in sysfs in a file called eeprom in the
devices node in sys, where as the NVMEM places them under class/nvmem.
So add this optional backwards compatible to the framework, again
using a flag.

Then convert the at24, at25 and 93xx46 by adding regmap support,
removing each drivers own /sys code and registering with the NVMEM
framework.

AT24 and 93xx46 has been boot tested, at25 compile tested only.

v2:

nvmem_register() now supports a backwards compatible flag, and the
Kconfig option has been removed.

Andrew Lunn (6):
  nvmem: Add flag to export NVMEM to root only
  nvmem: Add backwards compatibility support for older EEPROM drivers.
  eeprom: at24: extend driver to plug into the NVMEM framework
  eeprom: at25: Remove in kernel API for accessing the EEPROM
  eeprom: at25: extend driver to plug into the NVMEM framework
  eeprom: 93xx46: extend driver to plug into the NVMEM framework

 drivers/misc/eeprom/Kconfig         |   6 ++
 drivers/misc/eeprom/at24.c          | 121 +++++++++++++++++++----------
 drivers/misc/eeprom/at25.c          | 148 +++++++++++++++++-------------------
 drivers/misc/eeprom/eeprom_93xx46.c | 122 ++++++++++++++++++++++-------
 drivers/nvmem/core.c                | 134 +++++++++++++++++++++++++++++---
 include/linux/nvmem-provider.h      |   5 +-
 include/linux/spi/eeprom.h          |   2 -
 7 files changed, 378 insertions(+), 160 deletions(-)

-- 
2.6.3

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