From patchwork Thu Apr 2 02:59:30 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chandra Konduru X-Patchwork-Id: 6143711 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7E0799F350 for ; Thu, 2 Apr 2015 03:00:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 704C120398 for ; Thu, 2 Apr 2015 03:00:33 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 1317C2038D for ; Thu, 2 Apr 2015 03:00:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 730597215E; Wed, 1 Apr 2015 20:00:31 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id 7D4357215A for ; Wed, 1 Apr 2015 20:00:29 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga103.jf.intel.com with ESMTP; 01 Apr 2015 20:00:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,507,1422950400"; d="scan'208";a="674115558" Received: from cmkondur-desk2.fm.intel.com ([10.19.123.59]) by orsmga001.jf.intel.com with ESMTP; 01 Apr 2015 20:00:29 -0700 From: Chandra Konduru To: intel-gfx@lists.freedesktop.org Date: Wed, 1 Apr 2015 19:59:30 -0700 Message-Id: <1427943589-6254-2-git-send-email-chandra.konduru@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1427943589-6254-1-git-send-email-chandra.konduru@intel.com> References: <1427943589-6254-1-git-send-email-chandra.konduru@intel.com> Cc: ander.conselvan.de.oliveira@intel.com, daniel.vetter@intel.com Subject: [Intel-gfx] [PATCH 01/20] drm/i915: Adding drm helper function drm_plane_from_index(). X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Adding drm helper function to return plane pointer from index where index is a returned by drm_plane_index. v2: -avoided nested loop by adding loop count (Daniel) Signed-off-by: Chandra Konduru Reviewed-by: Matt Roper --- drivers/gpu/drm/drm_crtc.c | 22 ++++++++++++++++++++++ include/drm/drm_crtc.h | 1 + 2 files changed, 23 insertions(+) diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index d576a4d..0f0159b 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1289,6 +1289,28 @@ unsigned int drm_plane_index(struct drm_plane *plane) EXPORT_SYMBOL(drm_plane_index); /** + * drm_plane_from_index - find the registered plane at an index + * @idx: index of registered plane to find for + * + * Given a plane index, return the registered plane from DRM device's + * list of planes with matching index. + */ +struct drm_plane * +drm_plane_from_index(struct drm_device *dev, int idx) +{ + struct drm_plane *plane; + unsigned int i = 0; + + list_for_each_entry(plane, &dev->mode_config.plane_list, head) { + if (i == idx) + return plane; + i++; + } + return NULL; +} +EXPORT_SYMBOL(drm_plane_from_index); + +/** * drm_plane_force_disable - Forcibly disable a plane * @plane: plane to disable * diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 7b5c661..6b30036 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1264,6 +1264,7 @@ extern int drm_plane_init(struct drm_device *dev, bool is_primary); extern void drm_plane_cleanup(struct drm_plane *plane); extern unsigned int drm_plane_index(struct drm_plane *plane); +extern struct drm_plane * drm_plane_from_index(struct drm_device *dev, int idx); extern void drm_plane_force_disable(struct drm_plane *plane); extern int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format);