From patchwork Fri Feb 16 14:20:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13560091 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 E3124C48BC4 for ; Fri, 16 Feb 2024 14:27:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 19A4D10E918; Fri, 16 Feb 2024 14:27:23 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="UU/cgiU9"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0E44810EAE9; Fri, 16 Feb 2024 14:27:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1708093642; x=1739629642; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=t+Tl46SHSVfbWWXJ5i6E6dq3KpzKRJy+BlzikHqP4qM=; b=UU/cgiU9dkurufvpxN8Gd/nB6eMk4eQ/oaEgjKYbgMC1P37ucVd24jKq A18rLnfx8tW4uTCd7I9mIFTtG3IVv8xEQGC0NbwdDNqFDtnFrJOeYxmZX 1zyHS9DhS89ZZIL5uUOy0jnnbji+/d9J+FOhl9KYikCm/czZf1sxuWUKz dCL/M7j95YjPno0XY1lnOttA5uwDPsLn18SYj0x9etv66vtU8KB1OXJTx YM5ncgxits1Av3MBJWop2cbmTPeF5VVZbqnw+4Xw854nLobWzDz0QQc4V fb3hQzdnXgX8OsJ9s3z0VDIkZbg1y920i7ZEzsn9TRsmeLUDcuM6toBBF A==; X-IronPort-AV: E=McAfee;i="6600,9927,10985"; a="2076806" X-IronPort-AV: E=Sophos;i="6.06,164,1705392000"; d="scan'208";a="2076806" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Feb 2024 06:27:22 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,164,1705392000"; d="scan'208";a="3818331" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmviesa010.fm.intel.com with ESMTP; 16 Feb 2024 06:27:20 -0800 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Cc: ankit.k.nautiyal@intel.com, dri-devel@lists.freedesktop.org, Mitul Golani Subject: [PATCH 0/6] Enable Adaptive Sync SDP Support for DP Date: Fri, 16 Feb 2024 19:50:18 +0530 Message-Id: <20240216142024.1884258-1-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" An Adaptive Sync SDP allows a DP protocol converter to forward Adaptive Sync video with minimal buffering overhead within the converter. An Adaptive-Sync-capable DP protocol converter indicates its support by setting the related bit in the DPCD register. Computes AS SDP values based on the display configuration, ensuring proper handling of Variable Refresh Rate (VRR) in the context of Adaptive Sync. --v2: - Update logging to Patch-1 - use as_sdp instead of async - Put definitions to correct placeholders from where it is defined. - Update member types of as_sdp for uniformity. - Correct use of REG_BIT and REG_GENMASK. - Remove unrelated comments and changes. - Correct code indents. - separate out patch changes for intel_read/write_dp_sdp. --v3: - Add VIDEO_DIP_ASYNC_DATA_SIZE definition and comment in as_sdp_pack function to patch 2 as originally used there. [Patch 2]. - Add VIDEO_DIP_ENABLE_AS_HSW flag to intel_dp_set_infoframes [Patch 3]. --v4: - Add check for HAS_VRR before writing AS SDP. [Patch 3]. --v5: - Add missing check for HAS_VRR before reading AS SDP as well [Patch 3]. --v6: - Rebase all patches. - Compute TRANS_VRR_VSYNC. -v7: - Move vrr_vsync_start/end to compute config. - Use correct function for drm_debug_printer. -v8: - Code refactoring. - Update, VSYNC_START/END macros to VRR_VSYNC_START/END.(Ankit) - Update bit fields of VRR_VSYNC_START/END.(Ankit) - Send patches to dri-devel.(Ankit) - Update definition names for AS SDP which are starting from HSW, as these defines are applicable for ADLP+.(Ankit) - Remove unused bitfield define, AS_SDP_ENABLE. - Add support in drm for Adaptive Sync sink status, which can be used later as a check for read/write sdp. (Ankit) Mitul Golani (6): drm/dp: Add an support to indicate if sink supports AS SDP drm: Add Adaptive Sync SDP logging drm/i915/dp: Add Read/Write support for Adaptive Sync SDP drm/i915/display: Compute and Enable AS SDP drm/i915/display: Compute vrr_vsync params drm/i915/display: Read/Write AS sdp only when sink/source has enabled drivers/gpu/drm/display/drm_dp_helper.c | 37 +++++ .../drm/i915/display/intel_crtc_state_dump.c | 12 ++ drivers/gpu/drm/i915/display/intel_ddi.c | 4 + .../drm/i915/display/intel_display_device.h | 1 + .../drm/i915/display/intel_display_types.h | 2 + drivers/gpu/drm/i915/display/intel_dp.c | 130 +++++++++++++++++- drivers/gpu/drm/i915/display/intel_dp.h | 1 + drivers/gpu/drm/i915/display/intel_hdmi.c | 12 +- drivers/gpu/drm/i915/display/intel_vrr.c | 14 ++ drivers/gpu/drm/i915/i915_reg.h | 19 +++ include/drm/display/drm_dp.h | 2 + include/drm/display/drm_dp_helper.h | 34 +++++ 12 files changed, 264 insertions(+), 4 deletions(-)