From patchwork Tue Mar 22 21:40:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 12789151 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E05E5C433EF for ; Tue, 22 Mar 2022 21:41:11 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CC7BB10E54B; Tue, 22 Mar 2022 21:41:06 +0000 (UTC) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1F2D110E54B; Tue, 22 Mar 2022 21:41:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647985266; x=1679521266; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CLH4uKIwkLXT+EpFRPMNRvpzzJdCpPrGegyk0mmu0fc=; b=cs8713D/5yQL9HTtelEpLE0+q3R7SD4ksS9Xd85RwtLqsXIK9oqsgjJC 2UcQywJbQ5yLZirYXuTKSYLo05usA7ZwPQQvlQxqeDigdgQN4zDpOKtZx //D23iWVU5ZknNtqv6gLP1Or995C82eV4rCB6LY5BCRyFJ3qUCQFwmTcz MscxgQUxCNfiVjq4D2FdGOSs2wVxO3tHytDp+d5m297cvA35oIhX0Tn4s 1UZQLj7+EwWfOelRnwVJFx4If27gRtEXwBnJVHJxTgqGIdYTla2qYRuQd LL6p7I8ECqqdpaRpOdKdvYZeqiCjcPAMw29ob+awuGL/bw5dsNWp8Ne4B Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10294"; a="321154929" X-IronPort-AV: E=Sophos;i="5.90,202,1643702400"; d="scan'208";a="321154929" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2022 14:41:05 -0700 X-IronPort-AV: E=Sophos;i="5.90,202,1643702400"; d="scan'208";a="543905276" Received: from sburacze-mobl1.ger.corp.intel.com (HELO localhost) ([10.252.58.237]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2022 14:41:04 -0700 From: Jani Nikula To: dri-devel@lists.freedesktop.org Date: Tue, 22 Mar 2022 23:40:30 +0200 Message-Id: X-Mailer: git-send-email 2.30.2 In-Reply-To: References: MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Subject: [Intel-gfx] [RFC 01/19] drm/edid: add drm_edid_extension_block_count() and drm_edid_size() X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jani.nikula@intel.com, intel-gfx@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Add abstractions for getting the number of EDID extension blocks and the total EDID size in bytes. Signed-off-by: Jani Nikula Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/drm_edid.c | 18 ++++++++++++++++++ include/drm/drm_edid.h | 2 ++ 2 files changed, 20 insertions(+) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 561f53831e29..f4b49693e666 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2198,6 +2198,24 @@ struct edid *drm_get_edid_switcheroo(struct drm_connector *connector, } EXPORT_SYMBOL(drm_get_edid_switcheroo); +/** + * drm_edid_extension_block_count - get the number of EDID extension blocks + */ +u8 drm_edid_extension_block_count(const struct edid *edid) +{ + return edid->extensions; +} +EXPORT_SYMBOL(drm_edid_extension_block_count); + +/** + * drm_edid_size - get the EDID size in bytes + */ +size_t drm_edid_size(const struct edid *edid) +{ + return (drm_edid_extension_block_count(edid) + 1) * EDID_LENGTH; +} +EXPORT_SYMBOL(drm_edid_size); + /** * drm_edid_duplicate - duplicate an EDID and the extensions * @edid: EDID to duplicate diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 144c495b99c4..7a19daa00c0c 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -564,6 +564,8 @@ struct edid *drm_get_edid(struct drm_connector *connector, u32 drm_edid_get_panel_id(struct i2c_adapter *adapter); struct edid *drm_get_edid_switcheroo(struct drm_connector *connector, struct i2c_adapter *adapter); +u8 drm_edid_extension_block_count(const struct edid *edid); +size_t drm_edid_size(const struct edid *edid); struct edid *drm_edid_duplicate(const struct edid *edid); int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid); int drm_add_override_edid_modes(struct drm_connector *connector);