From patchwork Thu Jun 10 20:38:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leandro Ribeiro X-Patchwork-Id: 12313901 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 9D282C48BD1 for ; Thu, 10 Jun 2021 20:38:47 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 5386F61412 for ; Thu, 10 Jun 2021 20:38:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5386F61412 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 821C188437; Thu, 10 Jun 2021 20:38:45 +0000 (UTC) Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6875288437 for ; Thu, 10 Jun 2021 20:38:44 +0000 (UTC) Received: from localhost.localdomain (unknown [IPv6:2804:431:e7dc:1201:ddd3:c6b:bb28:7501]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: leandrohrb) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 8F4F51F442E8; Thu, 10 Jun 2021 21:38:41 +0100 (BST) From: Leandro Ribeiro To: dri-devel@lists.freedesktop.org Subject: [PATCH v5 1/1] drm/doc: document drm_mode_get_plane Date: Thu, 10 Jun 2021 17:38:24 -0300 Message-Id: <20210610203824.50965-2-leandro.ribeiro@collabora.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210610203824.50965-1-leandro.ribeiro@collabora.com> References: <20210610203824.50965-1-leandro.ribeiro@collabora.com> MIME-Version: 1.0 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: , Cc: airlied@linux.ie, pekka.paalanen@collabora.co.uk, kernel@collabora.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add a small description and document struct fields of drm_mode_get_plane. Signed-off-by: Leandro Ribeiro Reviewed-by: Pekka Paalanen --- include/uapi/drm/drm_mode.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) -- 2.31.1 diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index 9b6722d45f36..698559d9336b 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -312,16 +312,51 @@ struct drm_mode_set_plane { __u32 src_w; }; +/** + * struct drm_mode_get_plane - Get plane metadata. + * + * Userspace can perform a GETPLANE ioctl to retrieve information about a + * plane. + * + * To retrieve the number of formats supported, set @count_format_types to zero + * and call the ioctl. @count_format_types will be updated with the value. + * + * To retrieve these formats, allocate an array with the memory needed to store + * @count_format_types formats. Point @format_type_ptr to this array and call + * the ioctl again (with @count_format_types still set to the value returned in + * the first ioctl call). + */ struct drm_mode_get_plane { + /** + * @plane_id: Object ID of the plane whose information should be + * retrieved. Set by caller. + */ __u32 plane_id; + /** @crtc_id: Object ID of the current CRTC. */ __u32 crtc_id; + /** @fb_id: Object ID of the current fb. */ __u32 fb_id; + /** + * @possible_crtcs: Bitmask of CRTC's compatible with the plane. CRTC's + * are created and they receive an index, which corresponds to their + * position in the bitmask. Bit N corresponds to + * :ref:`CRTC index` N. + */ __u32 possible_crtcs; + /** + * @gamma_size: Number of entries of the legacy gamma lookup table. + * Deprecated. + */ __u32 gamma_size; + /** @count_format_types: Number of formats. */ __u32 count_format_types; + /** + * @format_type_ptr: Pointer to ``__u32`` array of formats that are + * supported by the plane. These formats do not require modifiers. + */ __u64 format_type_ptr; };