From patchwork Fri Mar 29 02:39:02 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 2360271 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) by patchwork2.kernel.org (Postfix) with ESMTP id 61144DF2A1 for ; Fri, 29 Mar 2013 02:46:06 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [IPv6:::1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 195FF9AD; Fri, 29 Mar 2013 02:45:38 +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 2D0B3984 for ; Fri, 29 Mar 2013 02:45:35 +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 2EF5720123 for ; Fri, 29 Mar 2013 02:45:33 +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 7EE77267163; Fri, 29 Mar 2013 13:45:30 +1100 (EST) Received: by ayumi.akashicho.tokyo.vergenet.net (Postfix, from userid 7100) id 85DD9EDEA30; Fri, 29 Mar 2013 11:45:27 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Fri, 29 Mar 2013 11:39:02 +0900 Message-Id: <1364525119-31791-14-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 013/390] drm: Parse color format information in CEA blocks 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: Lars-Peter Clausen The CEA extension block has a field which describes which YCbCr modes are supported by the device, use it to fill the drm_display_info color_formats fields. Also the existence of a CEA extension block is used as indication that the device supports RGB. Signed-off-by: Lars-Peter Clausen Reviewed-by: Jesse Barnes Signed-off-by: Dave Airlie (cherry picked from commit a988bc728f93b58d7d4c6657513c89a5f0eb4706) Signed-off-by: Simon Horman --- drivers/gpu/drm/drm_edid.c | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 9c4d2fb..095dd00 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1312,6 +1312,8 @@ add_detailed_modes(struct drm_connector *connector, struct edid *edid, #define VENDOR_BLOCK 0x03 #define SPEAKER_BLOCK 0x04 #define EDID_BASIC_AUDIO (1 << 6) +#define EDID_CEA_YCRCB444 (1 << 5) +#define EDID_CEA_YCRCB422 (1 << 4) /** * Search EDID for CEA extension block. @@ -1666,13 +1668,29 @@ static void drm_add_display_info(struct edid *edid, info->bpc = 0; info->color_formats = 0; - /* Only defined for 1.4 with digital displays */ - if (edid->revision < 4) + if (edid->revision < 3) return; if (!(edid->input & DRM_EDID_INPUT_DIGITAL)) return; + /* Get data from CEA blocks if present */ + edid_ext = drm_find_cea_extension(edid); + if (edid_ext) { + info->cea_rev = edid_ext[1]; + + /* The existence of a CEA block should imply RGB support */ + info->color_formats = DRM_COLOR_FORMAT_RGB444; + if (edid_ext[3] & EDID_CEA_YCRCB444) + info->color_formats |= DRM_COLOR_FORMAT_YCRCB444; + if (edid_ext[3] & EDID_CEA_YCRCB422) + info->color_formats |= DRM_COLOR_FORMAT_YCRCB422; + } + + /* Only defined for 1.4 with digital displays */ + if (edid->revision < 4) + return; + switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) { case DRM_EDID_DIGITAL_DEPTH_6: info->bpc = 6; @@ -1698,18 +1716,11 @@ static void drm_add_display_info(struct edid *edid, break; } - info->color_formats = DRM_COLOR_FORMAT_RGB444; + info->color_formats |= DRM_COLOR_FORMAT_RGB444; if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB444) info->color_formats |= DRM_COLOR_FORMAT_YCRCB444; if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB422) info->color_formats |= DRM_COLOR_FORMAT_YCRCB422; - - /* Get data from CEA blocks if present */ - edid_ext = drm_find_cea_extension(edid); - if (!edid_ext) - return; - - info->cea_rev = edid_ext[1]; } /**