From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frans Klaver Subject: [PATCH v4 0/2] Add support for ltc2952 poweroff Date: Thu, 9 Oct 2014 16:50:40 +0200 Message-ID: <1412866242-6474-1-git-send-email-frans.klaver@xsens.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from filter1.ibarracuda.nl ([83.247.7.10]:45112 "EHLO filter1.ibarracuda.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751684AbaJIOw2 (ORCPT ); Thu, 9 Oct 2014 10:52:28 -0400 Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Sebastian Reichel Cc: Frans Klaver , Dmitry Eremin-Solenikov , David Woodhouse , Grant Likely , Rob Herring , =?UTF-8?q?Ren=C3=A9=20Moll?= , Tjerk Hofmeijer , Guenter Roeck , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org This is version 4 of the series that adds support for the ltc2952 power= path chip. This series adds a driver for the LTC2952, an external power control ch= ip, which signals the OS to shut down. Additionally this driver lets the kernel p= ower down the board. This driver was tested with: - kernel version 3.15.8, 3.17 - ARM based processor (TI AM335x series) v3..v4: - Rename *kill to *poweroff - Use managed resources (devm_*) where possible - Handle irq failures on trigger gpio as if no trigger input was defi= ned - Drop no-op suspend/resume functions - Check value before starting timer - it may be possible that the tim= er fails to start on first pass, but starts on second pass. While this is un= likely, it will throw off the entire system. Just check the actual gpio val= ue to be sure.=20 - Reduce, almost eliminate, use of globals (I dislike them) - Fix some style issues - Now also tested on v3.17 v2..v3: - Allow absence of button input pin (and document that) - Fix some whitespace issues - Straighten out control flow here and there - Get rid of gpio array. This was only used in setup/cleanup cases. I= t never mattered elsewhere - Add some explanation to the commit message that introduces the driv= er - Add other contributors - Update Ren=C3=A9's e-mail; his Xsens e-mail is no longer valid - Now also tested on v3.17-rc7 Ren=C3=A9 Moll (2): power: reset: add LTC2952 poweroff support power: reset: document LTC2952 poweroff support .../bindings/power/reset/ltc2952-poweroff.txt | 31 ++ drivers/power/reset/Kconfig | 10 + drivers/power/reset/Makefile | 1 + drivers/power/reset/ltc2952-poweroff.c | 327 +++++++++++++= ++++++++ 4 files changed, 369 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/ltc29= 52-poweroff.txt create mode 100644 drivers/power/reset/ltc2952-poweroff.c --=20 2.1.0