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=-9.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable 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 F0A13C433E4 for ; Tue, 18 Aug 2020 07:25:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CDC292063A for ; Tue, 18 Aug 2020 07:25:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="X1MqwaV5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726634AbgHRHZ0 (ORCPT ); Tue, 18 Aug 2020 03:25:26 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:50367 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726357AbgHRHZX (ORCPT ); Tue, 18 Aug 2020 03:25:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1597735521; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:in-reply-to:in-reply-to:references:references; bh=92Ca05uy8jh6nULr3MA2yPy/bEf6QwrjQ+ISqlFQbww=; b=X1MqwaV5TaAaqgoiDeJ4/TP7L9upwtUinKmxc5gA4P0FfHwzOMaPqVmWK+CTK4Yn369vh+ bzo1jzp6fmm7vE4EXHkgqeH0rCBf1+rHNCQ9a07pHkD3/A+6kG8Pb/LUTHayXWcGmH4JCQ zsnJjHH4A55Tlp7IOg2j/F+3cNHwPzk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-377-Ga7orqJ2PjuSAubauhmWMQ-1; Tue, 18 Aug 2020 03:25:17 -0400 X-MC-Unique: Ga7orqJ2PjuSAubauhmWMQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6B0BD1DDFD; Tue, 18 Aug 2020 07:25:16 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-195.ams2.redhat.com [10.36.112.195]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0BC8E10098A7; Tue, 18 Aug 2020 07:25:12 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 2FAAB9D59; Tue, 18 Aug 2020 09:25:12 +0200 (CEST) From: Gerd Hoffmann To: dri-devel@lists.freedesktop.org Cc: Daniel Vetter , Gerd Hoffmann , 1882851@bugs.launchpad.net, David Airlie , Chia-I Wu , virtualization@lists.linux-foundation.org (open list:VIRTIO GPU DRIVER), linux-kernel@vger.kernel.org (open list) Subject: [PATCH 1/2] drm/virtio: fix unblank Date: Tue, 18 Aug 2020 09:25:10 +0200 Message-Id: <20200818072511.6745-2-kraxel@redhat.com> In-Reply-To: <20200818072511.6745-1-kraxel@redhat.com> References: <20200818072511.6745-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When going through a disable/enable cycle without changing the framebuffer the optimization added by commit 3954ff10e06e ("drm/virtio: skip set_scanout if framebuffer didn't change") causes the screen stay blank. Add a bool to force an update to fix that. v2: use drm_atomic_crtc_needs_modeset() (Daniel). Cc: 1882851@bugs.launchpad.net Fixes: 3954ff10e06e ("drm/virtio: skip set_scanout if framebuffer didn't change") Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_drv.h | 1 + drivers/gpu/drm/virtio/virtgpu_display.c | 11 +++++++++++ drivers/gpu/drm/virtio/virtgpu_plane.c | 4 +++- 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index 9ff9f4ac0522..4ab1b0ba2925 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -138,6 +138,7 @@ struct virtio_gpu_output { int cur_x; int cur_y; bool enabled; + bool needs_modeset; }; #define drm_crtc_to_virtio_gpu_output(x) \ container_of(x, struct virtio_gpu_output, crtc) diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c index 2c2742b8d657..6c26b41f4e0d 100644 --- a/drivers/gpu/drm/virtio/virtgpu_display.c +++ b/drivers/gpu/drm/virtio/virtgpu_display.c @@ -123,6 +123,17 @@ static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc, static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { + struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc); + + /* + * virtio-gpu can't do modeset and plane update operations + * independant from each other. So the actual modeset happens + * in the plane update callback, and here we just check + * whenever we must force the modeset. + */ + if (drm_atomic_crtc_needs_modeset(crtc->state)) { + output->needs_modeset = true; + } } static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = { diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c index 52d24179bcec..65757409d9ed 100644 --- a/drivers/gpu/drm/virtio/virtgpu_plane.c +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c @@ -163,7 +163,9 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane, plane->state->src_w != old_state->src_w || plane->state->src_h != old_state->src_h || plane->state->src_x != old_state->src_x || - plane->state->src_y != old_state->src_y) { + plane->state->src_y != old_state->src_y || + output->needs_modeset) { + output->needs_modeset = false; DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n", bo->hw_res_handle, plane->state->crtc_w, plane->state->crtc_h, -- 2.18.4