From mboxrd@z Thu Jan 1 00:00:00 1970 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 1C2DECE79AC for ; Wed, 20 Sep 2023 09:09:53 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6156B10E46E; Wed, 20 Sep 2023 09:09:52 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 87BDC10E46E for ; Wed, 20 Sep 2023 09:09:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695200990; x=1726736990; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=JnDLKm/4pFrTz+bSw3UqJwLQ93F6hpGvFO/7l2uTlUg=; b=WGN2laHKZ6LZs8sUbRhlihtgFNGlV4uKu6InDMDPPluMjWihhsn8UAfq +6nbP6hEKP6K1ls9WEd5APt9L1O2uLbpzZr5Htbwg0u6XtkJjf9zQWhgQ /oTv5BWTqlsilsiUtlvA7UslbAJaA1RfK1s7vwPDuRJ1r/lvY7djFwTzj hhe9VcvVSA4tl1SPM2KP3EeowxnI5MieG2pBtm0JfZDC9VialKBsoaaQ3 wTmtBg4uWhjqbchw+TGoS+lI474716us2Hahf1PdiMYRBFrIQBPsQHisk oGWL+bO/HxREBAPCOFymTBT0qnewgLLFtnhvK/TQSaA1q2PURJJ7fsHUv A==; X-IronPort-AV: E=McAfee;i="6600,9927,10838"; a="446641976" X-IronPort-AV: E=Sophos;i="6.02,161,1688454000"; d="scan'208";a="446641976" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2023 02:09:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10838"; a="696225596" X-IronPort-AV: E=Sophos;i="6.02,161,1688454000"; d="scan'208";a="696225596" Received: from unknown (HELO intel.com) ([10.237.72.65]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2023 02:09:49 -0700 Date: Wed, 20 Sep 2023 12:09:40 +0300 From: "Lisovskiy, Stanislav" To: Imre Deak Message-ID: References: <20230914192659.757475-1-imre.deak@intel.com> <20230914192659.757475-18-imre.deak@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230914192659.757475-18-imre.deak@intel.com> Subject: Re: [Intel-gfx] [PATCH v3 17/25] drm/i915/dp_mst: Fix PBN calculation with FEC overhead 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: intel-gfx@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Thu, Sep 14, 2023 at 10:26:51PM +0300, Imre Deak wrote: > On 8b/10b MST links the PBN value for DSC streams must be calculated > accounting for the FEC overhead. The same applies to 8b/10b non-DSC > streams if there is another DSC stream on the same link. Fix up the PBN > calculation accordingly. > > Signed-off-by: Imre Deak Reviewed-by: Stanislav Lisovskiy > --- > drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c > index 01291bbb44693..c1fea894d3774 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c > +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c > @@ -110,7 +110,8 @@ static int intel_dp_mst_find_vcpi_slots_for_bpp(struct intel_encoder *encoder, > > crtc_state->pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, > bpp << 4, > - false); > + (dsc || crtc_state->fec_enable) && > + !intel_dp_is_uhbr(crtc_state)); > > slots = drm_dp_atomic_find_time_slots(state, &intel_dp->mst_mgr, > connector->port, > -- > 2.37.2 >