From patchwork Mon Sep 11 05:05:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13378778 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 551F4EE57DF for ; Mon, 11 Sep 2023 05:11:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8615A10E11D; Mon, 11 Sep 2023 05:11:41 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id C290410E059 for ; Mon, 11 Sep 2023 05:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694409096; x=1725945096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=imUaRW1yH6mGu6a26nHxfCVHfLfWt8ljB8rUUKy/OHQ=; b=dlIPhZ9MBgKu5hpzyySxj8+Fc3xLSa5BsX7esOhjuJpB1I/s+irZXEpV 3dAJcJyc8DgYSTXyuf8lQFjO37FHKVWXf5WzxGmoaKbTUp+fvJFGRUYOW /p+esqJPIOfHQruiX5iKG4IXwfIz53OW8il1EovUnIWmaJdtoWqTb/wKe 5InawVH4A90qfSi0joeqiOXl/k6Utyk92VFbhuj/ZQNQYh2voFDMCLbEq Trp/nJSSwejtifQXPwOEmFRGbewpi42u3UYth8aIwXaLuLoldYLGYub5b 0w1f0mTFUVk2oVfc7ATEvd7NWmdH2T1T1jh/BeYuY/8g5D7blHv9pXNdU w==; X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="377911995" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="377911995" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2023 22:11:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="808692875" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="808692875" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga008.fm.intel.com with ESMTP; 10 Sep 2023 22:11:26 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Sep 2023 10:35:49 +0530 Message-Id: <20230911050549.763538-9-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 8/8] drm/i915/dsc: Allow DSC only with fractional bpp when forced from debugfs 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" From: Swati Sharma If force_dsc_fractional_bpp_en is set through debugfs allow DSC iff compressed bpp is fractional. Continue if the computed compressed bpp turns out to be a integer. v2: -Use helpers for fractional, integral bits of bits_per_pixel. (Suraj) -Fix comment (Suraj) Signed-off-by: Swati Sharma Reviewed-by: Suraj Kandpal --- drivers/gpu/drm/i915/display/intel_dp.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 90c92f3dc62a..f6bfbd89bc3f 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1904,6 +1904,9 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp, for (compressed_bppx16 = dsc_max_bpp; compressed_bppx16 >= dsc_min_bpp; compressed_bppx16 -= bppx16_step) { + if (intel_dp->force_dsc_fractional_bpp_en && + !to_bpp_frac_dec(compressed_bppx16)) + continue; ret = dsc_compute_link_config(intel_dp, pipe_config, limits, @@ -1911,6 +1914,10 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp, timeslots); if (ret == 0) { pipe_config->dsc.compressed_bpp_x16 = compressed_bppx16; + if (intel_dp->force_dsc_fractional_bpp_en && + to_bpp_frac_dec(compressed_bppx16)) + drm_dbg_kms(&i915->drm, "Forcing DSC fractional bpp\n"); + return 0; } }