From nobody Mon Feb 9 14:14:24 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F0ADC0015E for ; Fri, 7 Jul 2023 22:41:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232245AbjGGWle (ORCPT ); Fri, 7 Jul 2023 18:41:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55440 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231245AbjGGWlZ (ORCPT ); Fri, 7 Jul 2023 18:41:25 -0400 Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 067D82127 for ; Fri, 7 Jul 2023 15:41:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To: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=HPO0XUJvL8MHQ9quXzm+tMdaWyxXHw4tFqRhJIQaDP4=; b=WTX3qzd2WgPiBRfVMnXdnjDkIL Xt0tfRouRdRFvzV9YPftRJk2trpmEsvBPLJ3D9GGBpRcqsdmC3apU+KoZ5BevgZl1busI9l1mz1MX dtEbJ8YtsgDv8dP5mjdbKsYbZwa1kJk+tsOEoQYojXADWMlZ2IGsalDpPFlEjQ+UyeD8VEn0v9y/f 1FYs9V5hbFaNNJESmn9mUNJwKbqoTQIdH4KGiu9u13tEyygtJzkwXu9k4IfYdINwhUT7Z14RheXdD WiZK9OgNzgh2o0/gnmbdoWqgMLK9hsdO9jNq2dgHu1j+lonJ72Y9Wja+HW/W4unSa+/MXqRb8n3lZ ma9X2ryQ==; Received: from [187.74.70.209] (helo=steammachine.lan) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1qHu8g-00AP6e-Aw; Sat, 08 Jul 2023 00:41:22 +0200 From: =?UTF-8?q?Andr=C3=A9=20Almeida?= To: dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, wayland-devel@lists.freedesktop.org Cc: kernel-dev@igalia.com, alexander.deucher@amd.com, christian.koenig@amd.com, pierre-eric.pelloux-prayer@amd.com, Simon Ser , Rob Clark , Pekka Paalanen , Daniel Vetter , Daniel Stone , =?UTF-8?q?=27Marek=20Ol=C5=A1=C3=A1k=27?= , Dave Airlie , =?UTF-8?q?Michel=20D=C3=A4nzer?= , Randy Dunlap , hwentlan@amd.com, joshua@froggi.es, ville.syrjala@linux.intel.com, =?UTF-8?q?Andr=C3=A9=20Almeida?= Subject: [PATCH v5 2/6] drm: introduce DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP Date: Fri, 7 Jul 2023 19:40:55 -0300 Message-ID: <20230707224059.305474-3-andrealmeid@igalia.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230707224059.305474-1-andrealmeid@igalia.com> References: <20230707224059.305474-1-andrealmeid@igalia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Simon Ser This new kernel capability indicates whether async page-flips are supported via the atomic uAPI. DRM clients can use it to check for support before feeding DRM_MODE_PAGE_FLIP_ASYNC to the kernel. Make it clear that DRM_CAP_ASYNC_PAGE_FLIP is for legacy uAPI only. Signed-off-by: Simon Ser Reviewed-by: Andr=C3=A9 Almeida Reviewed-by: Alex Deucher Signed-off-by: Andr=C3=A9 Almeida --- v4: no changes --- drivers/gpu/drm/drm_ioctl.c | 5 +++++ include/uapi/drm/drm.h | 10 +++++++++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 7c9d66ee917d..8f756b99260d 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -302,6 +302,11 @@ static int drm_getcap(struct drm_device *dev, void *da= ta, struct drm_file *file_ case DRM_CAP_CRTC_IN_VBLANK_EVENT: req->value =3D 1; break; + case DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP: + req->value =3D drm_core_check_feature(dev, DRIVER_ATOMIC) && + dev->mode_config.async_page_flip && + !dev->mode_config.atomic_async_page_flip_not_supported; + break; default: return -EINVAL; } diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index a87bbbbca2d4..54c558f81f3c 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -706,7 +706,8 @@ struct drm_gem_open { /** * DRM_CAP_ASYNC_PAGE_FLIP * - * If set to 1, the driver supports &DRM_MODE_PAGE_FLIP_ASYNC. + * If set to 1, the driver supports &DRM_MODE_PAGE_FLIP_ASYNC for legacy + * page-flips. */ #define DRM_CAP_ASYNC_PAGE_FLIP 0x7 /** @@ -767,6 +768,13 @@ struct drm_gem_open { * Documentation/gpu/drm-mm.rst, section "DRM Sync Objects". */ #define DRM_CAP_SYNCOBJ_TIMELINE 0x14 +/** + * DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP + * + * If set to 1, the driver supports &DRM_MODE_PAGE_FLIP_ASYNC for atomic + * commits. + */ +#define DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP 0x15 =20 /* DRM_IOCTL_GET_CAP ioctl argument type */ struct drm_get_cap { --=20 2.41.0