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 A7F16C6778C for ; Tue, 3 Jul 2018 09:21:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D05021A14 for ; Tue, 3 Jul 2018 09:21:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6D05021A14 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.vnet.ibm.com 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 S1754692AbeGCJVk (ORCPT ); Tue, 3 Jul 2018 05:21:40 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:38036 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754469AbeGCJVg (ORCPT ); Tue, 3 Jul 2018 05:21:36 -0400 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w639Jcwu130110 for ; Tue, 3 Jul 2018 05:21:36 -0400 Received: from e06smtp02.uk.ibm.com (e06smtp02.uk.ibm.com [195.75.94.98]) by mx0a-001b2d01.pphosted.com with ESMTP id 2k02jp9f24-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 03 Jul 2018 05:21:35 -0400 Received: from localhost by e06smtp02.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 3 Jul 2018 10:21:29 +0100 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w639LSgM29032648 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 3 Jul 2018 09:21:28 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 56FFAA4057; Tue, 3 Jul 2018 12:21:54 +0100 (BST) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5EA4BA4051; Tue, 3 Jul 2018 12:21:52 +0100 (BST) Received: from aksadiga.in.ibm.com (unknown [9.124.35.93]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 3 Jul 2018 12:21:52 +0100 (BST) From: Akshay Adiga To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-pm@vger.kernel.org Cc: rjw@rjwysocki.net, stewart@linux.vnet.ibm.com, benh@kernel.crashing.org, svaidy@linux.vnet.ibm.com, ego@linux.vnet.ibm.com, npiggin@gmail.com, mpe@ellerman.id.au, Akshay Adiga Subject: [PATCH v3 0/2] powernv/cpuidle Device-tree parsing cleanup Date: Tue, 3 Jul 2018 14:50:54 +0530 X-Mailer: git-send-email 2.5.5 X-TM-AS-GCONF: 00 x-cbid: 18070309-0008-0000-0000-0000024F1F0D X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18070309-0009-0000-0000-000021B52C96 Message-Id: <1530609656-13301-1-git-send-email-akshay.adiga@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-07-03_03:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=861 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807030106 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Device-tree parsed multiple time in powernv cpuidle and powernv hotplug code. First to identify supported flags. Second time, to identify deepest_state and first deep state. Third time, during cpuidle init to find the available idle states. Any change in device-tree format will lead to make changes in these 3 places. Errors in device-tree can be handled in a better manner. This series adds code to parse device tree once and save in global structure. Changes from v2 : - Fix build error (moved a hunk from patch 1 to patch 2) Changes from v1 : - fold first 2 patches into 1 - rename pm_ctrl_reg_* as psscr_* - added comment stating removal of pmicr parsing code - removed parsing code for pmicr - add member valid in pnv_idle_states_t to indicate if the psscr-mask/val are valid combination, - Change function description of pnv_parse_cpuidle_dt - Added error handling code. Akshay Adiga (2): powernv/cpuidle: Parse dt idle properties into global structure powernv/cpuidle: Use parsed device tree values for cpuidle_init arch/powerpc/include/asm/cpuidle.h | 13 ++ arch/powerpc/platforms/powernv/idle.c | 216 ++++++++++++++++---------- drivers/cpuidle/cpuidle-powernv.c | 154 ++++-------------- 3 files changed, 177 insertions(+), 206 deletions(-) -- 2.18.0.rc2.85.g1fb9df7