From patchwork Thu Dec 29 12:41:28 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Guo X-Patchwork-Id: 89273 Delivered-To: patch@linaro.org Received: by 10.140.20.101 with SMTP id 92csp5969770qgi; Thu, 29 Dec 2016 04:42:30 -0800 (PST) X-Received: by 10.99.113.18 with SMTP id m18mr69549062pgc.115.1483015350158; Thu, 29 Dec 2016 04:42:30 -0800 (PST) Return-Path: Received: from gabe.freedesktop.org (gabe.freedesktop.org. [131.252.210.177]) by mx.google.com with ESMTPS id r4si21690042pfl.94.2016.12.29.04.42.29 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 29 Dec 2016 04:42:30 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of dri-devel-bounces@lists.freedesktop.org designates 131.252.210.177 as permitted sender) client-ip=131.252.210.177; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of dri-devel-bounces@lists.freedesktop.org designates 131.252.210.177 as permitted sender) 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 9E9F16E0D2; Thu, 29 Dec 2016 12:41:57 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id B12F26E0D2 for ; Thu, 29 Dec 2016 12:41:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C915220481; Thu, 29 Dec 2016 12:41:54 +0000 (UTC) Received: from localhost.localdomain (li411-102.members.linode.com [106.187.91.102]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 201C62051F; Thu, 29 Dec 2016 12:41:51 +0000 (UTC) From: Shawn Guo To: dri-devel@lists.freedesktop.org Subject: [PATCH 1/3] drm: add crtc helper drm_crtc_from_index() Date: Thu, 29 Dec 2016 20:41:28 +0800 Message-Id: <1483015290-16660-2-git-send-email-shawnguo@kernel.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1483015290-16660-1-git-send-email-shawnguo@kernel.org> References: <1483015290-16660-1-git-send-email-shawnguo@kernel.org> X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=ham 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 Cc: Daniel Vetter , Shawn Guo X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Shawn Guo It adds a crtc helper drm_crtc_from_index() to find the registered CRTC with a given index, just like drm_plane_from_index(). Signed-off-by: Shawn Guo --- drivers/gpu/drm/drm_crtc.c | 20 ++++++++++++++++++++ include/drm/drm_crtc.h | 1 + 2 files changed, 21 insertions(+) diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index e75f62cd8a65..5c1bb1f34697 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -47,6 +47,26 @@ #include "drm_internal.h" /** + * drm_crtc_from_index - find the registered CRTC at an index + * @dev: DRM device + * @idx: index of registered CRTC to find for + * + * Given a CRTC index, return the registered CRTC from DRM device's + * list of CRTCs with matching index. + */ +struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx) +{ + struct drm_crtc *crtc; + + drm_for_each_crtc(crtc, dev) + if (idx == crtc->index) + return crtc; + + return NULL; +} +EXPORT_SYMBOL(drm_crtc_from_index); + +/** * drm_crtc_force_disable - Forcibly turn off a CRTC * @crtc: CRTC to turn off * diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 946672f97e1e..a5627eb8621f 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -830,6 +830,7 @@ void drm_crtc_get_hv_timing(const struct drm_display_mode *mode, int drm_crtc_force_disable_all(struct drm_device *dev); int drm_mode_set_config_internal(struct drm_mode_set *set); +struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx); /* Helpers */ static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,