From patchwork Fri Mar 10 20:23:45 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukas Wunner X-Patchwork-Id: 9617919 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6AD9F60415 for ; Fri, 10 Mar 2017 20:25:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 686A62877C for ; Fri, 10 Mar 2017 20:25:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5B3532879A; Fri, 10 Mar 2017 20:25:04 +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=-4.2 required=2.0 tests=BAYES_00, 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 E6DEC2877C for ; Fri, 10 Mar 2017 20:25:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 50B7E6EEDC; Fri, 10 Mar 2017 20:25:03 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mailout2.hostsharing.net (mailout2.hostsharing.net [83.223.90.233]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4F95B6EEDD for ; Fri, 10 Mar 2017 20:25:01 +0000 (UTC) Received: from h08.hostsharing.net (h08.hostsharing.net [83.223.95.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mailout2.hostsharing.net (Postfix) with ESMTPS id 3443910167A72; Fri, 10 Mar 2017 21:25:02 +0100 (CET) Received: from localhost (5-38-90-81.adsl.cmo.de [81.90.38.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by h08.hostsharing.net (Postfix) with ESMTPSA id 73346612CA77; Fri, 10 Mar 2017 21:24:57 +0100 (CET) X-Mailbox-Line: From 701a8e89ce8ac39734736ab779558b6a4042a19e Mon Sep 17 00:00:00 2001 Message-Id: <701a8e89ce8ac39734736ab779558b6a4042a19e.1489145162.git.lukas@wunner.de> In-Reply-To: References: From: Lukas Wunner Date: Fri, 10 Mar 2017 21:23:45 +0100 Subject: [PATCH v2 3/5] drm/amdgpu: Don't register Thunderbolt eGPU with vga_switcheroo To: dri-devel@lists.freedesktop.org, Daniel Vetter X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP An external Thunderbolt GPU can neither drive the laptop's panel nor be powered off by the platform, so there's no point in registering it with vga_switcheroo. In fact, when the external GPU is runtime suspended, vga_switcheroo will cut power to the internal discrete GPU, resulting in a lockup. Moreover AMD's Windows driver special-cases Thunderbolt as well. Acked-by: Alex Deucher Signed-off-by: Lukas Wunner --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 +++++-- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 3 ++- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 6abb238b25c9..a8e1465a2bac 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1763,7 +1763,9 @@ int amdgpu_device_init(struct amdgpu_device *adev, runtime = true; if (amdgpu_device_is_px(ddev)) runtime = true; - vga_switcheroo_register_client(adev->pdev, &amdgpu_switcheroo_ops, runtime); + if (!pci_is_thunderbolt_attached(adev->pdev)) + vga_switcheroo_register_client(adev->pdev, + &amdgpu_switcheroo_ops, runtime); if (runtime) vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain); @@ -1926,7 +1928,8 @@ void amdgpu_device_fini(struct amdgpu_device *adev) amdgpu_atombios_fini(adev); kfree(adev->bios); adev->bios = NULL; - vga_switcheroo_unregister_client(adev->pdev); + if (!pci_is_thunderbolt_attached(adev->pdev)) + vga_switcheroo_unregister_client(adev->pdev); if (adev->flags & AMD_IS_PX) vga_switcheroo_fini_domain_pm_ops(adev->dev); vga_client_register(adev->pdev, NULL, NULL, NULL); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 61d94c745672..2f3b236721c9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -103,7 +103,8 @@ int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags) amdgpu_has_atpx() && (amdgpu_is_atpx_hybrid() || amdgpu_has_atpx_dgpu_power_cntl()) && - ((flags & AMD_IS_APU) == 0)) + ((flags & AMD_IS_APU) == 0) && + !pci_is_thunderbolt_attached(dev->pdev)) flags |= AMD_IS_PX; /* amdgpu_device_init should report only fatal error