From patchwork Thu Jul 26 14:14:10 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kumar, Mahesh" X-Patchwork-Id: 10545959 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 84BA314E0 for ; Thu, 26 Jul 2018 14:12:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 73CE72B3B2 for ; Thu, 26 Jul 2018 14:12:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 680402B3BD; Thu, 26 Jul 2018 14:12:29 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2B5052B3B2 for ; Thu, 26 Jul 2018 14:12:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 88B2B6E781; Thu, 26 Jul 2018 14:12:28 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8F6CE6E781 for ; Thu, 26 Jul 2018 14:12:23 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Jul 2018 07:12:23 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,405,1526367600"; d="scan'208";a="70584351" Received: from unknown (HELO localhost.localdomain) ([10.223.25.241]) by fmsmga002.fm.intel.com with ESMTP; 26 Jul 2018 07:12:21 -0700 From: Mahesh Kumar To: intel-gfx@lists.freedesktop.org Date: Thu, 26 Jul 2018 19:44:10 +0530 Message-Id: <20180726141410.2185-6-mahesh1.kumar@intel.com> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180726141410.2185-1-mahesh1.kumar@intel.com> References: <20180726141410.2185-1-mahesh1.kumar@intel.com> Subject: [Intel-gfx] [PATCH 5/5] drm/i915/skl+: don't trust IPC value set by BIOS X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: rodrigo.vivi@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP If KMS decide to disable IPC make sure we override IPC configuration set by BIOS. Signed-off-by: Mahesh Kumar --- drivers/gpu/drm/i915/intel_pm.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 39e400d5f555..77b34fe546a8 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -6097,10 +6097,8 @@ void intel_enable_ipc(struct drm_i915_private *dev_priv) u32 val; /* Display WA #0477 WaDisableIPC: skl */ - if (IS_SKYLAKE(dev_priv) || !dev_priv->ipc_capable_mem) { + if (IS_SKYLAKE(dev_priv) || !dev_priv->ipc_capable_mem) dev_priv->ipc_enabled = false; - return; - } val = I915_READ(DISP_ARB_CTL2);