From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3677CC3279B for ; Fri, 6 Jul 2018 05:36:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DF21423FDC for ; Fri, 6 Jul 2018 05:36:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DF21423FDC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=zonque.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932485AbeGFFgD (ORCPT ); Fri, 6 Jul 2018 01:36:03 -0400 Received: from mail.bugwerft.de ([46.23.86.59]:37574 "EHLO mail.bugwerft.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932300AbeGFFgA (ORCPT ); Fri, 6 Jul 2018 01:36:00 -0400 Received: from localhost.localdomain (pD95EF57F.dip0.t-ipconnect.de [217.94.245.127]) by mail.bugwerft.de (Postfix) with ESMTPSA id A468728DBF6; Fri, 6 Jul 2018 05:35:56 +0000 (UTC) From: Daniel Mack To: zbr@ioremap.net, robh+dt@kernel.org, mark.rutland@arm.com, szabolcs.gyurko@tlt.hu Cc: sre@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, robert.jarzmik@free.fr, Daniel Mack Subject: [PATCH v4 0/5] Add devicetree functionality to w1 busses and ds2760 Date: Fri, 6 Jul 2018 07:35:47 +0200 Message-Id: <20180706053552.11438-1-daniel@zonque.org> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch set contains five patches that bring devicetree functionality to w1 bus masters and slaves in general. As an example, the ds2760 driver is made aware of devicetree probing. Other drivers can easily be ported later. W1 masters scan their bus in order to discover slave devices. Once one is found, a driver matching the family of the device is instanciated which handles it. To add devicetree functionality, all that's needed for now is a call to of_find_matching_node() when a slave device is attached, so the corresponding of_node pointer is set. The series also contains a patch that merges the w1 slave driver for the ds2760 battery monitor into its only user, the ds2760 supply driver. The indirection with two drivers never had any benefit, and here is a good opportunity to clean this up. Patch #1 and #2 add DT bindings documentation Patch #3 adds the call to of_find_matching_node() Patch #4 merges the w1 slave and the supply driver for ds2760 Patch #5 makes the ds2760 supply driver aware of DT environments This works fine on a PXA3xx based board with a battery attached to the w1-gpio bus master controller. Changelog: v3 → v4: * Property name cleanups * Dropped maxim,current-accumulator property * Split 1st patch of v3 in two v2 → v3: * Fixed a typo in the documentation and added more real-world example for the bindings. Pointed out by Rob Herring. Daniel Mack (4): dt-bindings: w1: document generic onewire and DS2760 bindings w1: core: match sub-nodes of bus masters in devicetree power: supply: ds2760_battery: merge ds2760 supply driver with its w1 slave companion power: supply: ds2760_battery: add devicetree probing Daniel Mack (5): dt-bindings: w1: document generic onewire bindings dt-bindings: w1: document bindings for ds2760 battery monitor w1: core: match sub-nodes of bus masters in devicetree power: supply: ds2760_battery: merge ds2760 supply driver with its w1 slave companion power: supply: ds2760_battery: add devicetree probing .../bindings/power/supply/maxim,ds2760.txt | 26 ++ .../devicetree/bindings/w1/w1-gpio.txt | 11 +- Documentation/devicetree/bindings/w1/w1.txt | 25 ++ drivers/power/supply/Kconfig | 2 +- drivers/power/supply/ds2760_battery.c | 348 +++++++++++++----- drivers/w1/slaves/Kconfig | 12 - drivers/w1/slaves/Makefile | 1 - drivers/w1/slaves/w1_ds2760.c | 175 --------- drivers/w1/slaves/w1_ds2760.h | 59 --- drivers/w1/w1.c | 3 + include/linux/w1.h | 2 + 11 files changed, 323 insertions(+), 341 deletions(-) create mode 100644 Documentation/devicetree/bindings/power/supply/maxim,ds2760.txt create mode 100644 Documentation/devicetree/bindings/w1/w1.txt delete mode 100644 drivers/w1/slaves/w1_ds2760.c delete mode 100644 drivers/w1/slaves/w1_ds2760.h -- 2.17.1