From patchwork Thu Aug 10 13:03:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Ankit Nautiyal X-Patchwork-Id: 13349431 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 0E824C001E0 for ; Thu, 10 Aug 2023 13:08:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A923510E521; Thu, 10 Aug 2023 13:08:12 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id A4D5210E520; Thu, 10 Aug 2023 13:08:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1691672890; x=1723208890; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=xffm2gzIbRTovND0yRxSLa3iG1sNZmoiz2R1pOqTM54=; b=dSm0RzNF9/7lgt2wnyTfpDUyT6mgCKY2vLlcT94sB3/TH9TjT9NGwWVO R9CQMxQsHE8lABUY8aOdn9SY2WZVr5lgrPs5mfjd4pS4PKXnbwknfuTs+ Fhf5srW4eVpwAPhaah5Hf4vhlGxrf/kfuS2A8Rcfei+0RJaB8zxHCJu7U xa/YP7E4YdWe/MqHvY5Fpzp58Ll+k3rWSd0aeBGIS5/eABCTbsqzLmY+1 qdlkKPho1dCSG0aGTf3UnCHsXJC/cfiomW+2uqGPIM7r1Dv6MlfaH0Ug5 oSlbOvfgu7CPRnmzHlejIR+mu8eWYmneWPidr4lT7Fmkxs/izcD4B+Hd3 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10797"; a="356358518" X-IronPort-AV: E=Sophos;i="6.01,162,1684825200"; d="scan'208";a="356358518" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Aug 2023 06:06:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10797"; a="709142929" X-IronPort-AV: E=Sophos;i="6.01,162,1684825200"; d="scan'208";a="709142929" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Aug 2023 06:06:40 -0700 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Thu, 10 Aug 2023 18:33:00 +0530 Message-Id: <20230810130319.3708392-2-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230810130319.3708392-1-ankit.k.nautiyal@intel.com> References: <20230810130319.3708392-1-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 01/20] drm/i915/dp: Consider output_format while computing dsc bpp 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" While using DSC the compressed bpp is computed assuming RGB output format. Consider the output_format and compute the compressed bpp during mode valid and compute config steps. For DP-MST we currently use RGB output format only, so continue using RGB while computing compressed bpp for MST case. v2: Use output_bpp instead for pipe_bpp to clamp compressed_bpp. (Ville) Signed-off-by: Ankit Nautiyal Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/i915/display/intel_dp.c | 19 +++++++++++++++++-- drivers/gpu/drm/i915/display/intel_dp.h | 1 + drivers/gpu/drm/i915/display/intel_dp_mst.c | 1 + 3 files changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 12bd2f322e62..f138dfa5a2a2 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -744,6 +744,7 @@ u16 intel_dp_dsc_get_output_bpp(struct drm_i915_private *i915, u32 link_clock, u32 lane_count, u32 mode_clock, u32 mode_hdisplay, bool bigjoiner, + enum intel_output_format output_format, u32 pipe_bpp, u32 timeslots) { @@ -768,6 +769,10 @@ u16 intel_dp_dsc_get_output_bpp(struct drm_i915_private *i915, bits_per_pixel = ((link_clock * lane_count) * timeslots) / (intel_dp_mode_to_fec_clock(mode_clock) * 8); + /* Bandwidth required for 420 is half, that of 444 format */ + if (output_format == INTEL_OUTPUT_FORMAT_YCBCR420) + bits_per_pixel *= 2; + drm_dbg_kms(&i915->drm, "Max link bpp is %u for %u timeslots " "total bw %u pixel clock %u\n", bits_per_pixel, timeslots, @@ -1161,11 +1166,16 @@ intel_dp_mode_valid(struct drm_connector *_connector, if (HAS_DSC(dev_priv) && drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd)) { + enum intel_output_format sink_format, output_format; + int pipe_bpp; + + sink_format = intel_dp_sink_format(connector, mode); + output_format = intel_dp_output_format(connector, sink_format); /* * TBD pass the connector BPC, * for now U8_MAX so that max BPC on that platform would be picked */ - int pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp, U8_MAX); + pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp, U8_MAX); /* * Output bpp is stored in 6.4 format so right shift by 4 to get the @@ -1185,6 +1195,7 @@ intel_dp_mode_valid(struct drm_connector *_connector, target_clock, mode->hdisplay, bigjoiner, + output_format, pipe_bpp, 64) >> 4; dsc_slice_count = intel_dp_dsc_get_slice_count(intel_dp, @@ -1724,6 +1735,7 @@ int intel_dp_dsc_compute_config(struct intel_dp *intel_dp, adjusted_mode->crtc_clock, adjusted_mode->crtc_hdisplay, pipe_config->bigjoiner_pipes, + pipe_config->output_format, pipe_bpp, timeslots); /* @@ -1759,9 +1771,12 @@ int intel_dp_dsc_compute_config(struct intel_dp *intel_dp, * calculation procedure is bit different for MST case. */ if (compute_pipe_bpp) { + u16 output_bpp = intel_dp_output_bpp(pipe_config->output_format, + pipe_config->pipe_bpp); + pipe_config->dsc.compressed_bpp = min_t(u16, dsc_max_output_bpp >> 4, - pipe_config->pipe_bpp); + output_bpp); } pipe_config->dsc.slice_count = dsc_dp_slice_count; drm_dbg_kms(&dev_priv->drm, "DSC: compressed bpp %d slice count %d\n", diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h index 22099de3ca45..bb4f976af296 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.h +++ b/drivers/gpu/drm/i915/display/intel_dp.h @@ -111,6 +111,7 @@ u16 intel_dp_dsc_get_output_bpp(struct drm_i915_private *i915, u32 link_clock, u32 lane_count, u32 mode_clock, u32 mode_hdisplay, bool bigjoiner, + enum intel_output_format output_format, u32 pipe_bpp, u32 timeslots); u8 intel_dp_dsc_get_slice_count(struct intel_dp *intel_dp, diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index e3f176a093d2..aa8d9d570626 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -973,6 +973,7 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector, target_clock, mode->hdisplay, bigjoiner, + INTEL_OUTPUT_FORMAT_RGB, pipe_bpp, 64) >> 4; dsc_slice_count = intel_dp_dsc_get_slice_count(intel_dp,