From mboxrd@z Thu Jan 1 00:00:00 1970 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 2CBEFC61D97 for ; Wed, 22 Nov 2023 11:04:36 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A482B10E5F9; Wed, 22 Nov 2023 11:04:35 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id E5A4510E5F9 for ; Wed, 22 Nov 2023 11:04:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1700651073; x=1732187073; h=from:to:subject:in-reply-to:references:date:message-id: mime-version; bh=FywcLLFcK8mZ88QyxEhYSNvfRcF5sieQBUVe8ftRB60=; b=bVJCtNMMvolafE4AbluuI+wfxKRc0PC7kj7uNdgZdCAG2kaKjWkLck70 XfPlXXD5h/V5HqH1RkcE+v32hi+zEgYi/3YCoWqGFKPThKdApgSDiYAgG L5kX2xtd7HEam1wyjcjzWFGKhVzGjGpKrzYiQlD38lnDiFoULO24bo570 RXf68byVtxWcNLWbHimjPcxy85iXHwvd0RhhhyhZhcuMjbeCe89onOHjN 8AAku3V/6CLaZeVYjGgNOc7oD9l2EbJic/ItKHJ4Jk/LbDS0BX33t002G EGT8UKhboZWJEATPjUUSKVJdcOZCmUby/G3rqJV7PnjNSRSFkkvfwSmYy A==; X-IronPort-AV: E=McAfee;i="6600,9927,10901"; a="377062016" X-IronPort-AV: E=Sophos;i="6.04,218,1695711600"; d="scan'208";a="377062016" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Nov 2023 03:04:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10901"; a="910755074" X-IronPort-AV: E=Sophos;i="6.04,218,1695711600"; d="scan'208";a="910755074" Received: from tjquresh-mobl.ger.corp.intel.com (HELO localhost) ([10.252.41.76]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Nov 2023 03:04:32 -0800 From: Jani Nikula To: Mitul Golani , intel-gfx@lists.freedesktop.org In-Reply-To: <20231122065926.4076690-1-mitulkumar.ajitkumar.golani@intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <20231122065926.4076690-1-mitulkumar.ajitkumar.golani@intel.com> Date: Wed, 22 Nov 2023 13:04:29 +0200 Message-ID: <87cyw2m4le.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain Subject: Re: [Intel-gfx] [PATCH 0/3] Implement CMRR Support 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Wed, 22 Nov 2023, Mitul Golani wrote: > CMRR is a display feature that uses adaptive sync > framework to vary Vtotal slightly to match the > content rate exactly without frame drops. This > feature is a variation of VRR where it varies Vtotal > slightly (between additional 0 and 1 Vtotal scanlines) > to match content rate exactly without frame drops > using the adaptive sync framework. Please check and use the -v option of git-send-email. BR, Jani. > > enable this feature by programing new registers for > CMRR enable, CMRR_M, CMRR_N, vmin=vmax=flipline.The > CMRR_M/CMRR_N ratio represents the fractional part > in (actual refresh rate/target refresh rate) * origVTotal. > > Mitul Golani (3): > drm/i915: Define and compute Transcoder CMRR registers > drm/i915: Add Enable/Disable for CMRR based on VRR state > drm/i915: Compute CMRR and calculate vtotal > > .../drm/i915/display/intel_crtc_state_dump.c | 4 +- > drivers/gpu/drm/i915/display/intel_display.c | 54 +++++++- > .../drm/i915/display/intel_display_device.h | 1 + > .../drm/i915/display/intel_display_types.h | 6 + > drivers/gpu/drm/i915/display/intel_vrr.c | 129 ++++++++++++++++-- > drivers/gpu/drm/i915/i915_reg.h | 10 ++ > 6 files changed, 184 insertions(+), 20 deletions(-) -- Jani Nikula, Intel