From patchwork Thu Aug 17 14:24:55 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: 13356585 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 B0A2BC2FC2E for ; Thu, 17 Aug 2023 14:31:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1CA0910E4B5; Thu, 17 Aug 2023 14:30:51 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0430F10E4B8; Thu, 17 Aug 2023 14:30:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1692282648; x=1723818648; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=gQh1+B1q3y3lprRY2ymtI84SbpAyiwqFma1xwgEwsro=; b=UhBpSmR7A7wYu8XATL8JCQSNt0c+YQ608sYtp8zDdFaRu1/RJuo8p+ju FgAb5Jhx1t7S6vfPRjt7LjqTDskZza+t5yAhOPIqaAXmLBKzYH4EUmIPk ziBOSjT8dfKNsO11wROuL8VF5XWBRyBtBWXNlRU7tA7ZkAU5diN2mevf0 GxVzr1kivd0sAYiQ5gepJ6yVh4X0mXtLlfpNDKS2kwMEy+2c6qt+WLfoq ygpEL1PAd2kOoGmsqudrNd2DChV4a+A8pxyTg1PaJY2fnomo014KR0Sr/ 2dwMVRiRbzlRqMzNJcASt3RJxGcrxMxDLRPYPDpBw9rrbak6k9N/DAdzR g==; X-IronPort-AV: E=McAfee;i="6600,9927,10805"; a="376581749" X-IronPort-AV: E=Sophos;i="6.01,180,1684825200"; d="scan'208";a="376581749" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Aug 2023 07:28:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10805"; a="858244134" X-IronPort-AV: E=Sophos;i="6.01,180,1684825200"; d="scan'208";a="858244134" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Aug 2023 07:28:51 -0700 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Thu, 17 Aug 2023 19:54:55 +0530 Message-Id: <20230817142459.89764-15-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230817142459.89764-1-ankit.k.nautiyal@intel.com> References: <20230817142459.89764-1-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 14/18] drm/i915/dp: Add DSC BPC/BPP constraints while selecting pipe bpp with DSC 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" Currently we check if the pipe_bpp selected is >= the min DSC bpc/bpp requirement. We do not check if it is <= the max DSC bpc/bpp requirement. Add checks for max DSC BPC/BPP constraints while computing the pipe_bpp when DSC is in use. v2: Fix the commit message. Signed-off-by: Ankit Nautiyal Reviewed-by: Stanislav Lisovskiy --- drivers/gpu/drm/i915/display/intel_dp.c | 34 +++++++++++++++++-------- 1 file changed, 24 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 6dfad64b8379..109d7756ede4 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1691,13 +1691,27 @@ u8 intel_dp_dsc_min_src_input_bpc(struct drm_i915_private *i915) } static -bool is_dsc_pipe_bpp_sufficient(struct drm_i915_private *i915, int pipe_bpp) +bool is_dsc_pipe_bpp_sufficient(struct drm_i915_private *i915, + struct drm_connector_state *conn_state, + struct link_config_limits *limits, + int pipe_bpp) { - return pipe_bpp >= intel_dp_dsc_min_src_input_bpc(i915) * 3; + u8 dsc_max_bpc, dsc_min_bpc, dsc_max_pipe_bpp, dsc_min_pipe_bpp; + + dsc_max_bpc = min(intel_dp_dsc_max_src_input_bpc(i915), conn_state->max_requested_bpc); + dsc_min_bpc = intel_dp_dsc_min_src_input_bpc(i915); + + dsc_max_pipe_bpp = min(dsc_max_bpc * 3, limits->max_bpp); + dsc_min_pipe_bpp = max(dsc_min_bpc * 3, limits->min_bpp); + + return pipe_bpp >= dsc_min_pipe_bpp && + pipe_bpp <= dsc_max_pipe_bpp; } static -int intel_dp_force_dsc_pipe_bpp(struct intel_dp *intel_dp) +int intel_dp_force_dsc_pipe_bpp(struct intel_dp *intel_dp, + struct drm_connector_state *conn_state, + struct link_config_limits *limits) { struct drm_i915_private *i915 = dp_to_i915(intel_dp); int forced_bpp; @@ -1707,7 +1721,7 @@ int intel_dp_force_dsc_pipe_bpp(struct intel_dp *intel_dp) forced_bpp = intel_dp->force_dsc_bpc * 3; - if (is_dsc_pipe_bpp_sufficient(i915, forced_bpp)) { + if (is_dsc_pipe_bpp_sufficient(i915, conn_state, limits, forced_bpp)) { drm_dbg_kms(&i915->drm, "Input DSC BPC forced to %d\n", intel_dp->force_dsc_bpc); return forced_bpp; } @@ -1729,16 +1743,16 @@ static int intel_dp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp, u16 output_bpp, dsc_max_compressed_bpp = 0; int forced_bpp, pipe_bpp; - forced_bpp = intel_dp_force_dsc_pipe_bpp(intel_dp); + forced_bpp = intel_dp_force_dsc_pipe_bpp(intel_dp, conn_state, limits); if (forced_bpp) { pipe_bpp = forced_bpp; } else { pipe_bpp = intel_dp_dsc_compute_max_bpp(intel_dp, conn_state->max_requested_bpc); - if (!is_dsc_pipe_bpp_sufficient(i915, pipe_bpp)) { + if (!is_dsc_pipe_bpp_sufficient(i915, conn_state, limits, pipe_bpp)) { drm_dbg_kms(&i915->drm, - "Computed BPC less than min supported by source for DSC\n"); + "Computed BPC is not in DSC BPC limits\n"); return -EINVAL; } } @@ -1780,7 +1794,7 @@ static int intel_edp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp, struct drm_i915_private *i915 = dp_to_i915(intel_dp); int pipe_bpp, forced_bpp; - forced_bpp = intel_dp_force_dsc_pipe_bpp(intel_dp); + forced_bpp = intel_dp_force_dsc_pipe_bpp(intel_dp, conn_state, limits); if (forced_bpp) { pipe_bpp = forced_bpp; @@ -1788,9 +1802,9 @@ static int intel_edp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp, /* For eDP use max bpp that can be supported with DSC. */ pipe_bpp = intel_dp_dsc_compute_max_bpp(intel_dp, conn_state->max_requested_bpc); - if (!is_dsc_pipe_bpp_sufficient(i915, pipe_bpp)) { + if (!is_dsc_pipe_bpp_sufficient(i915, conn_state, limits, pipe_bpp)) { drm_dbg_kms(&i915->drm, - "Computed BPC less than min supported by source for DSC\n"); + "Computed BPC is not in DSC BPC limits\n"); return -EINVAL; } }