From patchwork Thu Jul 13 10:33:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Nautiyal, Ankit K" X-Patchwork-Id: 13311801 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 15CCFC001DF for ; Thu, 13 Jul 2023 10:38:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7F78910E696; Thu, 13 Jul 2023 10:38:30 +0000 (UTC) Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id D74CD10E68E; Thu, 13 Jul 2023 10:38:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689244698; x=1720780698; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=V2pol8a+DjM3zFPYNYUBy33YOS9251Cm2mGhTAr38Wo=; b=NbyIle0NlJiS8d+tp2v7UzJi1oO5HFqG0F1M+a+btIN7JuwXB8NzsZ1E /EjKLmzv8CryuJroP/M2z4eIzeNw5dtNdg4CfQWaxC1q/ODkmDOYxajOk o2DYwrxdnExd8tZsfbWaWD3Xm8R2C6EaiiF9M9tblR3OQJQohMogkRx1w xSfVn0kIuOU0mVIB92dIFAVtYusQ0zt7zrhf7983Wk4gc6mywaMy/tMYy sYrRrGoL+3AzatINakjdmKz6mhiaTy2NgdP7JLO/EFqOqRQOjQdIOEV4G s0cqUXwcSNPTPwS9OGDtLTt4b0qSQdU/uuRgKWWRXm446zPJkjCZ8hvYg g==; X-IronPort-AV: E=McAfee;i="6600,9927,10769"; a="428897700" X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="428897700" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jul 2023 03:38:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10769"; a="895965461" X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="895965461" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jul 2023 03:38:16 -0700 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 17/19] drm/i915/dp: Separate out function to get compressed bpp with joiner Date: Thu, 13 Jul 2023 16:03:44 +0530 Message-Id: <20230713103346.1163315-18-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230713103346.1163315-1-ankit.k.nautiyal@intel.com> References: <20230713103346.1163315-1-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: stanislav.lisovskiy@intel.com, anusha.srivatsa@intel.com, navaremanasi@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Pull the code to get joiner constraints on maximum compressed bpp into separate function. Signed-off-by: Ankit Nautiyal --- drivers/gpu/drm/i915/display/intel_dp.c | 49 ++++++++++++++----------- 1 file changed, 28 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index c39039e214ff..54fc60eb94a0 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -740,6 +740,30 @@ u32 intel_dp_dsc_nearest_valid_bpp(struct drm_i915_private *i915, u32 bpp, u32 p return bits_per_pixel; } +static +u32 get_max_compressed_bpp_with_joiner(struct drm_i915_private *i915, + u32 mode_clock, u32 mode_hdisplay, + bool bigjoiner) +{ + u32 max_bpp_small_joiner_ram; + + /* Small Joiner Check: output bpp <= joiner RAM (bits) / Horiz. width */ + max_bpp_small_joiner_ram = small_joiner_ram_size_bits(i915) / mode_hdisplay; + + if (bigjoiner) { + int bigjoiner_interface_bits = DISPLAY_VER(i915) >= 14 ? 36 : 24; + u32 max_bpp_bigjoiner = + i915->display.cdclk.max_cdclk_freq * 2 * bigjoiner_interface_bits / + intel_dp_mode_to_fec_clock(mode_clock); + + max_bpp_small_joiner_ram *= 2; + + return min(max_bpp_small_joiner_ram, max_bpp_bigjoiner); + } + + return max_bpp_small_joiner_ram; +} + u16 intel_dp_dsc_get_max_compressed_bpp(struct drm_i915_private *i915, u32 link_clock, u32 lane_count, u32 mode_clock, u32 mode_hdisplay, @@ -748,7 +772,7 @@ u16 intel_dp_dsc_get_max_compressed_bpp(struct drm_i915_private *i915, u32 pipe_bpp, u32 timeslots) { - u32 bits_per_pixel, max_bpp_small_joiner_ram; + u32 bits_per_pixel, joiner_max_bpp; /* * Available Link Bandwidth(Kbits/sec) = (NumberOfLanes)* @@ -788,27 +812,10 @@ u16 intel_dp_dsc_get_max_compressed_bpp(struct drm_i915_private *i915, (link_clock * lane_count * 8), intel_dp_mode_to_fec_clock(mode_clock)); - /* Small Joiner Check: output bpp <= joiner RAM (bits) / Horiz. width */ - max_bpp_small_joiner_ram = small_joiner_ram_size_bits(i915) / - mode_hdisplay; - - if (bigjoiner) - max_bpp_small_joiner_ram *= 2; - - /* - * Greatest allowed DSC BPP = MIN (output BPP from available Link BW - * check, output bpp from small joiner RAM check) - */ - bits_per_pixel = min(bits_per_pixel, max_bpp_small_joiner_ram); + joiner_max_bpp = get_max_compressed_bpp_with_joiner(i915, mode_clock, + mode_hdisplay, bigjoiner); - if (bigjoiner) { - int bigjoiner_interface_bits = DISPLAY_VER(i915) >= 14 ? 36 : 24; - u32 max_bpp_bigjoiner = - i915->display.cdclk.max_cdclk_freq * 2 * bigjoiner_interface_bits / - intel_dp_mode_to_fec_clock(mode_clock); - - bits_per_pixel = min(bits_per_pixel, max_bpp_bigjoiner); - } + bits_per_pixel = min(bits_per_pixel, joiner_max_bpp); bits_per_pixel = intel_dp_dsc_nearest_valid_bpp(i915, bits_per_pixel, pipe_bpp);