From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755464AbbA2SN0 (ORCPT ); Thu, 29 Jan 2015 13:13:26 -0500 Received: from mailout4.w1.samsung.com ([210.118.77.14]:19472 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751784AbbA2SNX (ORCPT ); Thu, 29 Jan 2015 13:13:23 -0500 X-AuditID: cbfec7f4-b7f126d000001e9a-9c-54ca77aec5d3 From: Karol Wrona To: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Cc: "Rafael J. Wysocki" , Amit Daniel Kachhap , Ulf Hansson , Bartlomiej Zolnierkiewicz , Kyungmin Park , Karol Wrona , Karol Wrona Subject: [RFC PATCH 0/1] PM / domains: Add support for virtual power domains Date: Thu, 29 Jan 2015 19:12:55 +0100 Message-id: <1422555176-13054-1-git-send-email-k.wrona@samsung.com> X-Mailer: git-send-email 1.7.9.5 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrNJMWRmVeSWpSXmKPExsVy+t/xq7rryk+FGMz/aGPRcDXEYuOM9awW 84+cY7U4tWw/k8XZpjfsFpd3zWGz+Nx7hNHizOlLrBbH14Zb7Fm3hcmBy2PnrLvsHneu7WHz 2HK1ncWjb8sqRo/Pm+QCWKO4bFJSczLLUov07RK4Ms6vPMBcsJi94v27jWwNjA9Yuxg5OSQE TCS23b3ABmGLSVy4tx7I5uIQEljKKDFnzVImCKePSaKj5ytYB5uAukTzjsXMILaIQITE8Vu9 rCBFzAIbmCQ+THnBBJIQFvCR6NhzGKyBRUBV4sH+djCbV8BZYsvuq0A2B9A6BYk5k2wmMHIv YGRYxSiaWppcUJyUnmuoV5yYW1yal66XnJ+7iRESQF92MC4+ZnWIUYCDUYmHd+amkyFCrIll xZW5hxglOJiVRHjnFZ8KEeJNSaysSi3Kjy8qzUktPsTIxMEp1cA44Uhl/GJpsVU7XKPvPdGr PxYlLbp3gYnR+j43o7VnZpSmXt/GdDvplZ4oo4D9ztwMnwdCaybP7PZ+uMr9bd/UqU4F26y5 o98/OvF0zbZJl9/GBh2+vOz0Nz2lFr/pt26di1rie2etLVv8R/bmZXfFrWLS7Xf8uRDA6f6h 6/sOPqf9pxee1p9wX4mlOCPRUIu5qDgRAFFKA1X+AQAA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, This patch adds virtual power domain handling. Some comments are needed if such approach has any sense. The goal is to know the state of devices residing in domain which is never gated or are gated only during sleep. I.e. in Exynos3250 SoC there is one domain which is only put into retention in LPD state and to enter it some devices (i.e. mmc host controller) have to be inactive. Using domains and runtime PM it would be able to give an information to PM core that the SoC is ready for deeper power state. TODO: binding doc, add child-parent hierarchy Thanks, Karol Karol Wrona (1): PM / domains: Add support for virtual power domains drivers/base/power/Makefile | 3 +- drivers/base/power/pm_domains_virt.c | 54 ++++++++++++++++++++++++++++++++++ 2 files changed, 56 insertions(+), 1 deletion(-) create mode 100644 drivers/base/power/pm_domains_virt.c -- 1.7.9.5