From patchwork Thu Mar 11 15:34:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Roper X-Patchwork-Id: 12131899 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D4156C433E9 for ; Thu, 11 Mar 2021 15:34:49 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 7AF0864F46 for ; Thu, 11 Mar 2021 15:34:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7AF0864F46 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DB8C46EDEC; Thu, 11 Mar 2021 15:34:40 +0000 (UTC) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7BA036EDF6 for ; Thu, 11 Mar 2021 15:34:32 +0000 (UTC) IronPort-SDR: xW+RnqEMQtBZnmeWJvOWxXBegMHbCD8Ef6r/BRndS5CJCIex3iqSqknhb/GFwV2FSuiN5Cb/DE zlulVHZGnn7A== X-IronPort-AV: E=McAfee;i="6000,8403,9920"; a="175797257" X-IronPort-AV: E=Sophos;i="5.81,241,1610438400"; d="scan'208";a="175797257" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2021 07:34:32 -0800 IronPort-SDR: Y/MLtortGJFBRqcMSs2doFN4g3T316HjqPVnkL9szMPZXqQDic5jthpaSMB53O/9RljjQSrOwl odCaqL+JXtOg== X-IronPort-AV: E=Sophos;i="5.81,241,1610438400"; d="scan'208";a="589251702" Received: from mdroper-desk1.fm.intel.com ([10.1.27.168]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2021 07:34:31 -0800 From: Matt Roper To: intel-gfx@lists.freedesktop.org Date: Thu, 11 Mar 2021 07:34:13 -0800 Message-Id: <20210311153415.3024607-22-matthew.d.roper@intel.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20210311153415.3024607-1-matthew.d.roper@intel.com> References: <20210311153415.3024607-1-matthew.d.roper@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v2 21/23] drm/i915/xelpd: Calculate VDSC RC parameters 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: Juha-Pekka Heikkil , Mohammed Khajapasha Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Vandita Kulkarni Add methods to calculate rc parameters for all bpps, against the fixed arrays that we already have for 8,10,12 valid o/p bpps, to cover RGB 444 formats. Our hw doesn't support YUV compression yet. The calculations used here are from VESA C model for DSC 1.1 v2: - Checkpatch fixes Cc: Manasi Navare Cc: Juha-Pekka Heikkil Signed-off-by: Vandita Kulkarni Signed-off-by: Mohammed Khajapasha Signed-off-by: Matt Roper --- drivers/gpu/drm/i915/display/intel_vdsc.c | 96 ++++++++++++++++++++--- 1 file changed, 86 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c index 0696c76646df..db1a64222e7d 100644 --- a/drivers/gpu/drm/i915/display/intel_vdsc.c +++ b/drivers/gpu/drm/i915/display/intel_vdsc.c @@ -5,7 +5,7 @@ * Author: Gaurav K Singh * Manasi Navare */ - +#include #include "i915_drv.h" #include "intel_display_types.h" #include "intel_dsi.h" @@ -376,12 +376,73 @@ static bool is_pipe_dsc(const struct intel_crtc_state *crtc_state) return true; } +static void +calculate_rc_params(struct rc_parameters *rc, + struct drm_dsc_config *vdsc_cfg) +{ + int bpc = vdsc_cfg->bits_per_component; + int bpp = vdsc_cfg->bits_per_pixel >> 4; + int ofs_und6[] = { 0, -2, -2, -4, -6, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12 }; + int ofs_und8[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; + int ofs_und12[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; + int ofs_und15[] = { 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12 }; + int qp_bpc_modifier = (bpc - 8) * 2; + u32 res, buf_i; + + if (vdsc_cfg->slice_height >= 8) + rc->first_line_bpg_offset = 12 + DIV_ROUND_UP((9 * min(34, vdsc_cfg->slice_height - 8)), 100); + else + rc->first_line_bpg_offset = 2 * (vdsc_cfg->slice_height - 1); + + /* Our hw supports only 444 modes as of today */ + if (bpp >= 12) + rc->initial_offset = 2048; + else if (bpp >= 10) + rc->initial_offset = 5632 - DIV_ROUND_UP(((bpp - 10) * 3584), 2); + else if (bpp >= 8) + rc->initial_offset = 6144 - DIV_ROUND_UP(((bpp - 8) * 512), 2); + else + rc->initial_offset = 6144; + + /* initial_xmit_delay = rc_model_size/2/compression_bpp */ + rc->initial_xmit_delay = DIV_ROUND_UP(DSC_RC_MODEL_SIZE_CONST, 2 * bpp); + + rc->flatness_min_qp = 3 + qp_bpc_modifier; + rc->flatness_max_qp = 12 + qp_bpc_modifier; + + rc->rc_quant_incr_limit0 = 11 + qp_bpc_modifier; + rc->rc_quant_incr_limit1 = 11 + qp_bpc_modifier; + + for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) { + /* Calculate range_bgp_offset */ + if (bpp <= 6) { + rc->rc_range_params[buf_i].range_bpg_offset = ofs_und6[buf_i]; + } else if (bpp <= 8) { + res = DIV_ROUND_UP(((bpp - 6) * (ofs_und8[buf_i] - ofs_und6[buf_i])), 2); + rc->rc_range_params[buf_i].range_bpg_offset = + ofs_und6[buf_i] + res; + } else if (bpp <= 12) { + rc->rc_range_params[buf_i].range_bpg_offset = + ofs_und8[buf_i]; + } else if (bpp <= 15) { + res = DIV_ROUND_UP(((bpp - 12) * (ofs_und15[buf_i] - ofs_und12[buf_i])), 3); + rc->rc_range_params[buf_i].range_bpg_offset = + ofs_und12[buf_i] + res; + } else { + rc->rc_range_params[buf_i].range_bpg_offset = + ofs_und15[buf_i]; + } + } +} + int intel_dsc_compute_params(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config) { + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct drm_dsc_config *vdsc_cfg = &pipe_config->dsc.config; u16 compressed_bpp = pipe_config->dsc.compressed_bpp; const struct rc_parameters *rc_params; + struct rc_parameters *rc = NULL; u8 i = 0; vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay; @@ -416,9 +477,24 @@ int intel_dsc_compute_params(struct intel_encoder *encoder, vdsc_cfg->rc_buf_thresh[13] = 0x7D; } - rc_params = get_rc_params(compressed_bpp, vdsc_cfg->bits_per_component); - if (!rc_params) - return -EINVAL; + /* + * From XE_LPD onwards we supports compression bpps in steps of 1 + * upto uncompressed bpp-1, hence add calculations for all the rc + * parameters + */ + if (DISPLAY_VER(dev_priv) >= 13) { + rc = kmalloc(sizeof(*rc), GFP_KERNEL); + if (!rc) + return -ENOMEM; + + calculate_rc_params(rc, vdsc_cfg); + rc_params = rc; + } else { + rc_params = get_rc_params(compressed_bpp, + vdsc_cfg->bits_per_component); + if (!rc_params) + return -EINVAL; + } vdsc_cfg->first_line_bpg_offset = rc_params->first_line_bpg_offset; vdsc_cfg->initial_xmit_delay = rc_params->initial_xmit_delay; @@ -444,20 +520,20 @@ int intel_dsc_compute_params(struct intel_encoder *encoder, /* * BitsPerComponent value determines mux_word_size: - * When BitsPerComponent is 12bpc, muxWordSize will be equal to 64 bits - * When BitsPerComponent is 8 or 10bpc, muxWordSize will be equal to - * 48 bits + * When BitsPerComponent is less than or 10bpc, muxWordSize will be equal to + * 48 bits otherwise 64 */ - if (vdsc_cfg->bits_per_component == 8 || - vdsc_cfg->bits_per_component == 10) + if (vdsc_cfg->bits_per_component <= 10) vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC; - else if (vdsc_cfg->bits_per_component == 12) + else vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC; /* InitialScaleValue is a 6 bit value with 3 fractional bits (U3.3) */ vdsc_cfg->initial_scale_value = (vdsc_cfg->rc_model_size << 3) / (vdsc_cfg->rc_model_size - vdsc_cfg->initial_offset); + kfree(rc); + return 0; }