From patchwork Fri Nov 1 18:23:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Andr=C3=A9_Almeida?= X-Patchwork-Id: 13859659 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 00D17E6F07D for ; Fri, 1 Nov 2024 18:24:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BBE1510E9EF; Fri, 1 Nov 2024 18:24:27 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=igalia.com header.i=@igalia.com header.b="Wfz/pUwM"; dkim-atps=neutral Received: from fanzine2.igalia.com (fanzine.igalia.com [178.60.130.6]) by gabe.freedesktop.org (Postfix) with ESMTPS id CD11310E9EE; Fri, 1 Nov 2024 18:24:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Cc:To:In-Reply-To:References:Message-Id: Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date:From:Sender: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=NJ2HTplSW4KwnXcLWKk3RlCjYiAPM3moOM2p6p61nbM=; b=Wfz/pUwMiF+BndkF0k3J32+OLP TOWTgToX6zRjB250vlrB80A8BQo2l3GfvA1QABpgXdsGNyZOVQrhfk/R5jXG5EaPVI/3g0s4ueSxR uloPxwNWJ4PSjLCAD/W/Lfh1wctsD0VZ2axNSR7t7mDdavc8p53tEMncvUmwG+baoTBDWovQB2JSS 32vxN75lK8gif52j7YOmUn0QInkRLXhjTz2zrI+BBEyHNvhPH8dqJwt/ZJNg6eMxHfmzzCh9f6Xeq JquaI6IzPaKt5MchNsjSwkXBvBfjWodRi2iZLMtyHPpRUYL8af66LlzoQjaQ3y7HY/emPn+a+3pks CLs2mOgA==; Received: from [189.78.222.89] (helo=[192.168.15.100]) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1t6wJd-000XDx-Ie; Fri, 01 Nov 2024 19:24:09 +0100 From: =?utf-8?q?Andr=C3=A9_Almeida?= Date: Fri, 01 Nov 2024 15:23:47 -0300 Subject: [PATCH RESEND v9 1/2] drm/atomic: Let drivers decide which planes to async flip MIME-Version: 1.0 Message-Id: <20241101-tonyk-async_flip-v9-1-681814efbfbe@igalia.com> References: <20241101-tonyk-async_flip-v9-0-681814efbfbe@igalia.com> In-Reply-To: <20241101-tonyk-async_flip-v9-0-681814efbfbe@igalia.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , =?utf-8?q?Christian_K=C3=B6nig?= , Xinhui Pan , dmitry.baryshkov@linaro.org, Simon Ser , joshua@froggi.es, Xaver Hugl , Daniel Stone , ville.syrjala@linux.intel.com Cc: kernel-dev@igalia.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, =?utf-8?q?And?= =?utf-8?q?r=C3=A9_Almeida?= X-Mailer: b4 0.14.2 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Currently, DRM atomic uAPI allows only primary planes to be flipped asynchronously. However, each driver might be able to perform async flips in other different plane types. To enable drivers to set their own restrictions on which type of plane they can or cannot flip, use the existing atomic_async_check() from struct drm_plane_helper_funcs to enhance this flexibility, thus allowing different plane types to be able to do async flips as well. In order to prevent regressions and such, we keep the current policy: we skip the driver check for the primary plane, because it is always allowed to do async flips on it. Signed-off-by: André Almeida Reviewed-by: Dmitry Baryshkov Tested-by: Christopher Snowhill Reviewed-by: Christopher Snowhill Tested-by: Christopher Snowhill on Radeon RX 7700 XT --- Changes from v8: - Rebased on top of 6.12-rc1 --- drivers/gpu/drm/drm_atomic_uapi.c | 39 +++++++++++++++++++++++++++++---------- 1 file changed, 29 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c index 370dc676e3aa543c9827b50df20df78f02b738c9..a0120df4b63e6b3419b53eb3d3673882559501c6 100644 --- a/drivers/gpu/drm/drm_atomic_uapi.c +++ b/drivers/gpu/drm/drm_atomic_uapi.c @@ -27,8 +27,9 @@ * Daniel Vetter */ -#include #include +#include +#include #include #include #include @@ -1063,6 +1064,7 @@ int drm_atomic_set_property(struct drm_atomic_state *state, struct drm_plane *plane = obj_to_plane(obj); struct drm_plane_state *plane_state; struct drm_mode_config *config = &plane->dev->mode_config; + const struct drm_plane_helper_funcs *plane_funcs = plane->helper_private; plane_state = drm_atomic_get_plane_state(state, plane); if (IS_ERR(plane_state)) { @@ -1070,15 +1072,32 @@ int drm_atomic_set_property(struct drm_atomic_state *state, break; } - if (async_flip && - (plane_state->plane->type != DRM_PLANE_TYPE_PRIMARY || - (prop != config->prop_fb_id && - prop != config->prop_in_fence_fd && - prop != config->prop_fb_damage_clips))) { - ret = drm_atomic_plane_get_property(plane, plane_state, - prop, &old_val); - ret = drm_atomic_check_prop_changes(ret, old_val, prop_value, prop); - break; + if (async_flip) { + /* check if the prop does a nop change */ + if ((plane_state->plane->type != DRM_PLANE_TYPE_PRIMARY) || + (prop != config->prop_fb_id && + prop != config->prop_in_fence_fd && + prop != config->prop_fb_damage_clips)) { + ret = drm_atomic_plane_get_property(plane, plane_state, + prop, &old_val); + ret = drm_atomic_check_prop_changes(ret, old_val, prop_value, prop); + break; + } + + /* ask the driver if this non-primary plane is supported */ + if (plane->type != DRM_PLANE_TYPE_PRIMARY) { + ret = -EINVAL; + + if (plane_funcs && plane_funcs->atomic_async_check) + ret = plane_funcs->atomic_async_check(plane, state); + + if (ret) { + drm_dbg_atomic(prop->dev, + "[PLANE:%d] does not support async flips\n", + obj->id); + break; + } + } } ret = drm_atomic_plane_set_property(plane,