From patchwork Fri Mar 29 02:40:16 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 2360921 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) by patchwork1.kernel.org (Postfix) with ESMTP id 6C7DE3FD40 for ; Fri, 29 Mar 2013 02:48:24 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [IPv6:::1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 3A80FB7F; Fri, 29 Mar 2013 02:45:55 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTP id 1B93698F for ; Fri, 29 Mar 2013 02:45:50 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from kirsty.vergenet.net (kirsty.vergenet.net [202.4.237.240]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 162E720177 for ; Fri, 29 Mar 2013 02:45:48 +0000 (UTC) Received: from ayumi.akashicho.tokyo.vergenet.net (p8120-ipbfp1001kobeminato.hyogo.ocn.ne.jp [118.10.137.120]) by kirsty.vergenet.net (Postfix) with ESMTP id DC5CC2C69E2; Fri, 29 Mar 2013 13:45:35 +1100 (EST) Received: by ayumi.akashicho.tokyo.vergenet.net (Postfix, from userid 7100) id 76251EDEA32; Fri, 29 Mar 2013 11:45:34 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Fri, 29 Mar 2013 11:40:16 +0900 Message-Id: <1364525119-31791-88-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1364525119-31791-1-git-send-email-horms+renesas@verge.net.au> References: <1364525119-31791-1-git-send-email-horms+renesas@verge.net.au> X-Spam-Status: No, score=-3.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, RP_MATCHES_RCVD autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: Magnus Damm Subject: [LTSI-dev] [PATCH/RFC 087/390] drm: get cea video id code for a given display mode X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org From: Stephane Marchesin This patch adds support for getting CEA Video ID Code for a given display mode after matching with edid_cea_modes list. Its index in the list added with one, gives the desired code. This exported function will be used by hdmi drivers for composing AVI info frame data. Signed-off-by: Stephane Marchesin Signed-off-by: Rahul Sharma Signed-off-by: Dave Airlie (cherry picked from commit a4799037c3234830e9feb1823d87f905fb4d080a) Signed-off-by: Simon Horman --- drivers/gpu/drm/drm_edid.c | 20 ++++++++++++++++++++ include/drm/drm_crtc.h | 1 + 2 files changed, 21 insertions(+) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index d738a38..0f5b1a4 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1516,6 +1516,26 @@ u8 *drm_find_cea_extension(struct edid *edid) } EXPORT_SYMBOL(drm_find_cea_extension); +/* + * Looks for a CEA mode matching given drm_display_mode. + * Returns its CEA Video ID code, or 0 if not found. + */ +u8 drm_match_cea_mode(struct drm_display_mode *to_match) +{ + struct drm_display_mode *cea_mode; + u8 mode; + + for (mode = 0; mode < drm_num_cea_modes; mode++) { + cea_mode = (struct drm_display_mode *)&edid_cea_modes[mode]; + + if (drm_mode_equal(to_match, cea_mode)) + return mode + 1; + } + return 0; +} +EXPORT_SYMBOL(drm_match_cea_mode); + + static int do_cea_modes (struct drm_connector *connector, u8 *db, u8 len) { diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 49dd8c2..1f5f1d6 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1037,6 +1037,7 @@ extern int drm_mode_gamma_get_ioctl(struct drm_device *dev, extern int drm_mode_gamma_set_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern u8 *drm_find_cea_extension(struct edid *edid); +extern u8 drm_match_cea_mode(struct drm_display_mode *to_match); extern bool drm_detect_hdmi_monitor(struct edid *edid); extern bool drm_detect_monitor_audio(struct edid *edid); extern int drm_mode_page_flip_ioctl(struct drm_device *dev,