From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933507AbcBPXnI (ORCPT ); Tue, 16 Feb 2016 18:43:08 -0500 Received: from vps0.lunn.ch ([178.209.37.122]:49649 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933360AbcBPXnG (ORCPT ); Tue, 16 Feb 2016 18:43:06 -0500 From: Andrew Lunn To: GregKH Cc: srinivas.kandagatla@linaro.org, maxime.ripard@free-electrons.com, wsa@the-dreams.de, broonie@kernel.org, vz@mleia.com, fd@ti.com, linux-kernel@vger.kernel.org, pantelis.antoniou@konsulko.com, bgolaszewski@baylibre.com, Andrew Lunn Subject: [PATCHv4 0/7] Convert exiting EEPROM drivers to NVMEM Date: Wed, 17 Feb 2016 00:41:30 +0100 Message-Id: <1455666097-9115-1-git-send-email-andrew@lunn.ch> X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. v3: Rebase on v4.5-rc1. Add a patch to replace memory_accessor in the setup() callbacks with nvmem API calls v4: Rebase on v4.5-rc3 Fix lockdep key in patch #2 Andrew Lunn (7): 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 misc: at24: replace memory_accessor with nvmem_device_read arch/arm/mach-davinci/board-mityomapl138.c | 5 +- arch/arm/mach-davinci/common.c | 4 +- drivers/misc/eeprom/Kconfig | 6 ++ drivers/misc/eeprom/at24.c | 130 +++++++++++++------------ drivers/misc/eeprom/at25.c | 148 +++++++++++++---------------- drivers/misc/eeprom/eeprom_93xx46.c | 122 +++++++++++++++++++----- drivers/nvmem/core.c | 141 +++++++++++++++++++++++++-- include/linux/davinci_emac.h | 4 +- include/linux/memory.h | 11 --- include/linux/nvmem-provider.h | 5 +- include/linux/platform_data/at24.h | 10 +- include/linux/spi/eeprom.h | 2 - 12 files changed, 387 insertions(+), 201 deletions(-) -- 2.7.0