From patchwork Thu Dec 19 21:34:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 13915866 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 C8AF6E7718B for ; Thu, 19 Dec 2024 21:35:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5266910EDE3; Thu, 19 Dec 2024 21:35:33 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="NCeGYytA"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2E0A910EDE3; 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19 Dec 2024 13:35:32 -0800 X-CSE-ConnectionGUID: Uj6i1FsYTWupecOOCefUIQ== X-CSE-MsgGUID: 3T+Y2GECQhyYWa8AeIeZDg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,248,1728975600"; d="scan'208";a="129146332" Received: from mjarzebo-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.246.207]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Dec 2024 13:35:30 -0800 From: Jani Nikula To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org, jani.nikula@intel.com, imre.deak@intel.com Subject: [PATCH v2 14/16] drm/i915/ddi: handle 128b/132b SST in intel_ddi_read_func_ctl() Date: Thu, 19 Dec 2024 23:34:03 +0200 Message-Id: X-Mailer: git-send-email 2.39.5 In-Reply-To: References: MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo 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" We'll only ever get here in MST mode from MST stream encoders; the primary encoder's ->get_config() won't be called when we've detected it's MST. v2: Read mst_master_transcoder in 128b/132b SST path (Imre) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_ddi.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 04118f2eea94..37b771f07d59 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -4026,6 +4026,11 @@ static void intel_ddi_read_func_ctl_dp_sst(struct intel_encoder *encoder, crtc_state->lane_count = ((ddi_func_ctl & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1; + if (DISPLAY_VER(display) >= 12 && + (ddi_func_ctl & TRANS_DDI_MODE_SELECT_MASK) == TRANS_DDI_MODE_SELECT_FDI_OR_128B132B) + crtc_state->mst_master_transcoder = + REG_FIELD_GET(TRANS_DDI_MST_TRANSPORT_SELECT_MASK, ddi_func_ctl); + intel_cpu_transcoder_get_m1_n1(crtc, cpu_transcoder, &crtc_state->dp_m_n); intel_cpu_transcoder_get_m2_n2(crtc, cpu_transcoder, &crtc_state->dp_m2_n2); @@ -4120,9 +4125,19 @@ static void intel_ddi_read_func_ctl(struct intel_encoder *encoder, intel_ddi_read_func_ctl_fdi(encoder, pipe_config, ddi_func_ctl); } else if (ddi_mode == TRANS_DDI_MODE_SELECT_DP_SST) { intel_ddi_read_func_ctl_dp_sst(encoder, pipe_config, ddi_func_ctl); - } else if (ddi_mode == TRANS_DDI_MODE_SELECT_DP_MST || - (ddi_mode == TRANS_DDI_MODE_SELECT_FDI_OR_128B132B && HAS_DP20(display))) { + } else if (ddi_mode == TRANS_DDI_MODE_SELECT_DP_MST) { intel_ddi_read_func_ctl_dp_mst(encoder, pipe_config, ddi_func_ctl); + } else if (ddi_mode == TRANS_DDI_MODE_SELECT_FDI_OR_128B132B && HAS_DP20(display)) { + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + + /* + * If this is true, we know we're being called from mst stream + * encoder's ->get_config(). + */ + if (intel_dp->is_mst) + intel_ddi_read_func_ctl_dp_mst(encoder, pipe_config, ddi_func_ctl); + else + intel_ddi_read_func_ctl_dp_sst(encoder, pipe_config, ddi_func_ctl); } }