From patchwork Wed Feb 26 09:19:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AceLan Kao X-Patchwork-Id: 1244840 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=canonical.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=EIJrwtwy; dkim-atps=neutral Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48S9Hm2zL0z9sRJ; Wed, 26 Feb 2020 20:20:04 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1j6srI-0006vs-T7; Wed, 26 Feb 2020 09:20:00 +0000 Received: from mail-pj1-f67.google.com ([209.85.216.67]) by huckleberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1j6srH-0006vl-CS for kernel-team@lists.ubuntu.com; Wed, 26 Feb 2020 09:19:59 +0000 Received: by mail-pj1-f67.google.com with SMTP id m7so2037663pjs.0 for ; Wed, 26 Feb 2020 01:19:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:subject:date:message-id; bh=gkT5zBRYTzUOQ9yXVAzjrEVPw0kBdatgDW5fSDByRR8=; b=EIJrwtwy/sqrB394VW5brViaxrYr9r2bmUA388bJXderX6t3dMDl+GzWg4EaNRECyW gHfjT9hgGGasaXKERTsgzum41YdOqUjJs0QpKIeysgnMR7DGqPrhzezmO3T+LqOY/GQ3 /7AGAxutgRXcFB2DjFyxAAVMc8FS7eU1/e1KT4Nssew8C6su7FuHqAmlodyRLcHPcsWt pfnMktIcSZwtHtJoClD3BEojHAom6DK3sVlkdF6PhglauvYEZCjySwL/V5JH/fLhn+xZ iyu08zfs3GfTxseTJHkevNwgba6ZhxjOW2+po89vXvJpAYre+vcA+yQ+fLe6LXfXcj2j AWhw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:subject:date:message-id; bh=gkT5zBRYTzUOQ9yXVAzjrEVPw0kBdatgDW5fSDByRR8=; b=MlA++YI8FBISYPYqfch1i4scokPs6Xm/shFVyaXpvIlQP2K+3lj9QnOgMTQWYTS1Ya Bt9sPzEAXlgFa/A4a2G9q8QoM4bydgpOWJGemOb35zKjLKErLCfYSxATLcTiGUU5ey2b iRz2kDCeleUZ8IGPlg5bMeJKS2Q9A3ULcAb3QL5k5sa3H7r59E1t7H7q8z8WDtYF3pCx Y8tD/9rR/m57Lr0UyOYqa83fENXYL9WS3m25kA19RmCM7wD4bNofvAJOm0yekxaeccR/ 9vLMEBuCmdLtBTeA6D1B/P3i60df2AXXNMxeNEkyb2hgwjxi0ahctbKXJ2vbYrtu/hI8 92RQ== X-Gm-Message-State: APjAAAWZugrDbhG6jatQSsBHaRTjQu4wkzPufbkKvuVwoSWWc230oxe7 Col6xarbGG49sIT5lDtDEqjSYoSDPmM= X-Google-Smtp-Source: APXvYqyy4qJ0uh4cIhCID6ToE6bJBe5YNlF6RW87KjUWHmdWIJdVIwDCsNaf/sNP5xz8Cd1lfbgU6Q== X-Received: by 2002:a17:90a:e996:: with SMTP id v22mr4172827pjy.53.1582708797228; Wed, 26 Feb 2020 01:19:57 -0800 (PST) Received: from localhost (220-135-95-34.HINET-IP.hinet.net. [220.135.95.34]) by smtp.gmail.com with ESMTPSA id r11sm2015020pgi.9.2020.02.26.01.19.56 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 26 Feb 2020 01:19:56 -0800 (PST) From: AceLan Kao To: kernel-team@lists.ubuntu.com Subject: [PATCH 0/2][SRU][OEM-OSP1-B] CPU package state stuck at PC3 with nvidia dGPU in power saving mode Date: Wed, 26 Feb 2020 17:19:52 +0800 Message-Id: <20200226091954.20764-1-acelan.kao@canonical.com> X-Mailer: git-send-email 2.17.1 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" BugLibk: https://bugs.launchpad.net/bugs/1864606 [Impact] On a certain Dell laptop which comes with nvidia dGPU, the CPU package state stuck at PC3 in power saving mode(uses iGPU) [Fix] It requires below commit(from v5.3-rc1) for runtime pm to work, and to avoid conflict, have to introduce another refactor commit. d4a4f927e4dd i2c: nvidia-gpu: add runtime pm support cb7302fbe365 i2c: nvidia-gpu: refactor master_xfer [Test] Verified on the target laptop, it enters PC10 during long idle. [Regression Potential] Low, the commit simply adds runtime pm support. Ajay Gupta (2): i2c: nvidia-gpu: refactor master_xfer i2c: nvidia-gpu: add runtime pm support drivers/i2c/busses/i2c-nvidia-gpu.c | 50 +++++++++++++++++++++-------- 1 file changed, 37 insertions(+), 13 deletions(-)