From patchwork Wed Oct 16 18:47:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Navare, Manasi" X-Patchwork-Id: 11193941 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A97F71668 for ; Wed, 16 Oct 2019 18:45:52 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 9172E218DE for ; Wed, 16 Oct 2019 18:45:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9172E218DE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 51A846E42E; Wed, 16 Oct 2019 18:45:50 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id BF8246E427 for ; Wed, 16 Oct 2019 18:45:48 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Oct 2019 11:45:47 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,304,1566889200"; d="scan'208";a="208466727" Received: from labuser-z97x-ud5h.jf.intel.com ([10.54.75.49]) by fmsmga001.fm.intel.com with ESMTP; 16 Oct 2019 11:45:47 -0700 From: Manasi Navare To: intel-gfx@lists.freedesktop.org Date: Wed, 16 Oct 2019 11:47:45 -0700 Message-Id: <20191016184749.28213-2-manasi.d.navare@intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20191015230519.15022-1-manasi.d.navare@intel.com> References: <20191015230519.15022-1-manasi.d.navare@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v10 2/6] drm/i915/display/icl: Enable TRANSCODER PORT SYNC for tiled displays across separate ports X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , Daniel Vetter Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" In case of tiled displays where different tiles are displayed across different ports, we need to synchronize the transcoders involved. This patch implements the transcoder port sync feature for synchronizing one master transcoder with one or more slave transcoders. This is only enbaled in slave transcoder and the master transcoder is unaware that it is operating in this mode. This has been tested with tiled display connected to ICL. v7: * Rebase on Maarten's patches v6: * Use master_trans +1 and address missing trans_edp case (Ville) v5: * Add TRANSCODER_D case and MISSING_CASE (Maarten) v4: Rebase v3: * Check of DP_MST moved to atomic_check (Maarten) v2: * Do not use RMW, just write to the register in commit (Jani N) Cc: Daniel Vetter Cc: Ville Syrjälä Cc: Maarten Lankhorst Cc: Matt Roper Cc: Jani Nikula Signed-off-by: Manasi Navare Reviewed-by: Maarten Lankhorst --- drivers/gpu/drm/i915/display/intel_display.c | 33 ++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index a5fcc82656bf..64c6fca014fc 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -4405,6 +4405,36 @@ static void icl_set_pipe_chicken(struct intel_crtc *crtc) I915_WRITE(PIPE_CHICKEN(pipe), tmp); } +static void icl_enable_trans_port_sync(const struct intel_crtc_state *crtc_state) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + u32 trans_ddi_func_ctl2_val; + u8 master_select; + + /* + * Configure the master select and enable Transcoder Port Sync for + * Slave CRTCs transcoder. + */ + if (crtc_state->master_transcoder == INVALID_TRANSCODER) + return; + + if (crtc_state->master_transcoder == TRANSCODER_EDP) + master_select = 0; + else + master_select = crtc_state->master_transcoder + 1; + + /* Set the master select bits for Tranascoder Port Sync */ + trans_ddi_func_ctl2_val = (PORT_SYNC_MODE_MASTER_SELECT(master_select) & + PORT_SYNC_MODE_MASTER_SELECT_MASK) << + PORT_SYNC_MODE_MASTER_SELECT_SHIFT; + /* Enable Transcoder Port Sync */ + trans_ddi_func_ctl2_val |= PORT_SYNC_MODE_ENABLE; + + I915_WRITE(TRANS_DDI_FUNC_CTL2(crtc_state->cpu_transcoder), + trans_ddi_func_ctl2_val); +} + static void intel_fdi_normal_train(struct intel_crtc *crtc) { struct drm_device *dev = crtc->base.dev; @@ -6429,6 +6459,9 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config, if (!transcoder_is_dsi(cpu_transcoder)) intel_set_pipe_timings(pipe_config); + if (INTEL_GEN(dev_priv) >= 11) + icl_enable_trans_port_sync(pipe_config); + intel_set_pipe_src_size(pipe_config); if (cpu_transcoder != TRANSCODER_EDP &&