From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartosz Golaszewski Subject: [PATCH v2 0/9] eeprom: at24: at24cs series serial number read Date: Tue, 27 Oct 2015 12:43:44 +0100 Message-ID: <1445946233-6071-1-git-send-email-bgolaszewski@baylibre.com> Return-path: Received: from mail-wm0-f41.google.com ([74.125.82.41]:35312 "EHLO mail-wm0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752408AbbJ0LvA (ORCPT ); Tue, 27 Oct 2015 07:51:00 -0400 Received: by wmll128 with SMTP id l128so245236wml.0 for ; Tue, 27 Oct 2015 04:50:59 -0700 (PDT) Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: Wolfram Sang Cc: linux-i2c , LKML , Bartosz Golaszewski Chips from the at24cs EEPROM series have an additional read-only memory area containing a factory pre-programmed serial number. In order to access it, a dummy write must be executed before reading the serial number bytes. This series adds support for reading the serial number through a sysfs attribute. While we're at it: some of the patches contain readability tweaks and code organization fixes. Tested with at24cs64 and at24cs02 chips (for both 16 and 8 bit address pointers). v2: - protect the serial number read with a mutex v1: https://lkml.org/lkml/2015/10/20/162 Bartosz Golaszewski (9): eeprom: at24: platform_data: use BIT() macro eeprom: at24: new flag in platform_data eeprom: at24: tie up an additional address for at24cs series eeprom: at24: support reading of the serial number eeprom: at24: export the serial number through sysfs eeprom: at24: improve the device_id table readability eeprom: at24: add the at24cs series to the list of supported devices eeprom: at24: remove a reduntant if eeprom: at24: readability tweaks drivers/misc/eeprom/at24.c | 187 +++++++++++++++++++++++++++++++------ include/linux/platform_data/at24.h | 9 +- 2 files changed, 166 insertions(+), 30 deletions(-) -- 2.1.4