Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752607AbdFNV7t (ORCPT ); Wed, 14 Jun 2017 17:59:49 -0400 Received: from mail-pg0-f43.google.com ([74.125.83.43]:35596 "EHLO mail-pg0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751600AbdFNV7s (ORCPT ); Wed, 14 Jun 2017 17:59:48 -0400 From: Jaghathiswari Rankappagounder Natarajan To: zbr@ioremap.net, linux-kernel@vger.kernel.org, linux@roeck-us.net, jdelvare@suse.com, linux-hwmon@vger.kernel.org Cc: Jaghathiswari Rankappagounder Natarajan Subject: [PATCH linux v1 0/3] Export 1-wire thermal sensors as hwmon device Date: Wed, 14 Jun 2017 14:59:41 -0700 Message-Id: <20170614215944.24984-1-jaghu@google.com> X-Mailer: git-send-email 2.13.1.508.gb3defc5cc-goog Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1781 Lines: 46 Our board has 4 DS18B20 1-wire temperature sensors. Each 1-wire bus and the sensor under it is already configured against the Linux 1-wire driver (called w1). They have a sysfs file(e.g. /sys/bus/w1/devices/w1_bus_master1/28-000007704f4c/w1_slave) which, when read, runs code to read the temperature. We'd like the temperatures to show up in hwmon, so that the BMC IPMI sensor plumbing can forward those to host. This patchset is based on linux mainline version v4.10. Tested: Yes; On a board with 4 DS18B20 1-wire temperature sensors: root@zaius:/sys/class/hwmon# ls hwmon0 hwmon1 hwmon2 hwmon3 hwmon4 hwmon5 root@zaius:/sys/class/hwmon# cd hwmon0 root@zaius:/sys/class/hwmon/hwmon0# ls device name subsystem temp1_input uevent root@zaius:/sys/class/hwmon/hwmon0# cat temp1_input 24500 root@zaius:/sys/class/hwmon/hwmon0# cd .. root@zaius:/sys/class/hwmon# cd hwmon1 root@zaius:/sys/class/hwmon/hwmon1# cat temp1_input 26562 root@zaius:/sys/class/hwmon/hwmon1# cd .. root@zaius:/sys/class/hwmon# cd hwmon2 root@zaius:/sys/class/hwmon/hwmon2# cat temp1_input 27250 root@zaius:/sys/class/hwmon/hwmon2# cd .. root@zaius:/sys/class/hwmon# cd hwmon3 root@zaius:/sys/class/hwmon/hwmon3# cat temp1_input 22250 root@zaius:/sys/class/hwmon/hwmon3# Jaghathiswari Rankappagounder Natarajan (3): drivers: w1: add hwmon support structures drivers: w1: refactor w1_slave_show to make the temp reading functionality separate drivers: w1: add hwmon temp support for w1_therm drivers/w1/slaves/w1_therm.c | 124 ++++++++++++++++++++++++++++++++----------- drivers/w1/w1.c | 20 ++++++- drivers/w1/w1.h | 2 + drivers/w1/w1_family.h | 2 + 4 files changed, 117 insertions(+), 31 deletions(-) -- 2.13.1.508.gb3defc5cc-goog