From patchwork Mon Nov 7 07:20:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ankit Nautiyal X-Patchwork-Id: 13033888 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 65B2CC433FE for ; Mon, 7 Nov 2022 07:20:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 28CCA10E20C; Mon, 7 Nov 2022 07:20:20 +0000 (UTC) Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id CF0B910E0B7; Mon, 7 Nov 2022 07:20:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1667805612; x=1699341612; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LZZES9SxIbnZY22Oa2AuSBYCrPrwcPc/TylqpBdUn6U=; b=UGU7jU6JlcSIZT96shFdSiDk9sda5PT9atCF1h/7dwGkbeUgwkDfL4v1 twEgyMqCLAetW0pIPvvxkZ7l8Zbne7Bmr/MFAHJfp2wnHfydrFrXTEILu Y7g9knjlL6kdOAE4B3cbC8sbzHWOL/d9wq/WnkEBp5Fk9NURFERbor47g b3/Xn8IgLwtrjj42AF5wdwOUcKoOojaxzX//ODsKmZaKq6BE4S6lHUYdu /fVw5NgPyCr3Kdelj5cxfy8wOdboChBy45p7gPO714C+fOfPnOplhn4NX MUSghda8dwI75dFrDDulqp21oskGrFBF/WQyVOX6gdlad48uLp+zy/HGn A==; X-IronPort-AV: E=McAfee;i="6500,9779,10523"; a="372463321" X-IronPort-AV: E=Sophos;i="5.96,143,1665471600"; d="scan'208";a="372463321" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2022 23:20:11 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10523"; a="704767228" X-IronPort-AV: E=Sophos;i="5.96,143,1665471600"; d="scan'208";a="704767228" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2022 23:20:09 -0800 From: Ankit Nautiyal To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [RFC 01/15] drm/edid: Add helper to get max FRL rate for an HDMI sink Date: Mon, 7 Nov 2022 12:50:31 +0530 Message-Id: <20221107072045.628895-2-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221107072045.628895-1-ankit.k.nautiyal@intel.com> References: <20221107072045.628895-1-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vandita.kulkarni@intel.com, uma.shankar@intel.com, mika.kahola@intel.com, radhakrishna.sripada@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add the helpers for getting the max FRL rate with and without DSC for an HDMI sink. Signed-off-by: Ankit Nautiyal --- drivers/gpu/drm/drm_edid.c | 38 ++++++++++++++++++++++++++++++++++++++ include/drm/drm_edid.h | 2 ++ 2 files changed, 40 insertions(+) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index b2d61c05f559..5961399c31ba 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -7182,3 +7182,41 @@ static void _drm_update_tile_info(struct drm_connector *connector, connector->tile_group = NULL; } } + +/** + * drm_hdmi_sink_max_frl_rate - get the max frl rate, if supported + * @connector - connector with HDMI sink + * + * RETURNS: + * max frl rate supported by the HDMI sink, 0 if FRL not supported + */ +int drm_hdmi_sink_max_frl_rate(struct drm_connector *connector) +{ + int max_lanes = connector->display_info.hdmi.max_lanes; + int rate_per_lane = connector->display_info.hdmi.max_frl_rate_per_lane; + + return max_lanes * rate_per_lane; +} +EXPORT_SYMBOL(drm_hdmi_sink_max_frl_rate); + +/** + * drm_hdmi_sink_dsc_max_frl_rate - get the max frl rate from HDMI sink with + * DSC1.2 compression. + * @connector - connector with HDMI sink + * + * RETURNS: + * max frl rate supported by the HDMI sink with DSC1.2, 0 if FRL not supported + */ +int drm_hdmi_sink_dsc_max_frl_rate(struct drm_connector *connector) +{ + int max_dsc_lanes, dsc_rate_per_lane; + + if (!connector->display_info.hdmi.dsc_cap.v_1p2) + return 0; + + max_dsc_lanes = connector->display_info.hdmi.dsc_cap.max_lanes; + dsc_rate_per_lane = connector->display_info.hdmi.dsc_cap.max_frl_rate_per_lane; + + return max_dsc_lanes * dsc_rate_per_lane; +} +EXPORT_SYMBOL(drm_hdmi_sink_dsc_max_frl_rate); diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 372963600f1d..c567826eee58 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -611,5 +611,7 @@ int drm_edid_connector_update(struct drm_connector *connector, const struct drm_edid *edid); const u8 *drm_find_edid_extension(const struct drm_edid *drm_edid, int ext_id, int *ext_index); +int drm_hdmi_sink_max_frl_rate(struct drm_connector *connector); +int drm_hdmi_sink_dsc_max_frl_rate(struct drm_connector *connector); #endif /* __DRM_EDID_H__ */