From patchwork Sun Sep 16 10:53:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Chauhan, Madhav" X-Patchwork-Id: 10601825 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9076714DA for ; Sun, 16 Sep 2018 17:47:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8117C29400 for ; Sun, 16 Sep 2018 17:47:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 75CAB296BE; Sun, 16 Sep 2018 17:47:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3864D29400 for ; Sun, 16 Sep 2018 17:47:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 18AC76E2AD; Sun, 16 Sep 2018 17:43:46 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 08AE46E007 for ; Sun, 16 Sep 2018 11:04:47 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Sep 2018 04:04:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,381,1531810800"; d="scan'208";a="74701340" Received: from madhav-desktop.iind.intel.com ([10.223.25.13]) by orsmga006.jf.intel.com with ESMTP; 16 Sep 2018 04:04:35 -0700 From: Madhav Chauhan To: intel-gfx@lists.freedesktop.org Date: Sun, 16 Sep 2018 16:23:41 +0530 Message-Id: <1537095223-5184-19-git-send-email-madhav.chauhan@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1537095223-5184-1-git-send-email-madhav.chauhan@intel.com> References: <1537095223-5184-1-git-send-email-madhav.chauhan@intel.com> Subject: [Intel-gfx] [PATCH v6 18/20] drm/i915/icl: Enable DSI transcoders 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@intel.com, komala.b.rangappa@intel.com, rodrigo.vivi@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP This patch enables DSI transcoders by writing to TRANS_CONF registers and wait for its state to be enabled. Signed-off-by: Madhav Chauhan --- drivers/gpu/drm/i915/icl_dsi.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index e7f6005..ae8877a 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -596,6 +596,28 @@ static void gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder, } } +static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); + enum port port; + enum transcoder dsi_trans; + u32 tmp; + + for_each_dsi_port(port, intel_dsi->ports) { + dsi_trans = dsi_port_to_transcoder(port); + tmp = I915_READ(PIPECONF(dsi_trans)); + tmp |= PIPECONF_ENABLE; + I915_WRITE(PIPECONF(dsi_trans), tmp); + + /* wait for transcoder to be enabled */ + if (intel_wait_for_register(dev_priv, PIPECONF(dsi_trans), + I965_PIPECONF_ACTIVE, + I965_PIPECONF_ACTIVE, 10)) + DRM_ERROR("DSI transcoder not enabled\n"); + } +} + static void gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder, const struct intel_crtc_state *pipe_config) { @@ -635,4 +657,6 @@ gen11_dsi_pre_enable(struct intel_encoder *encoder, /* step6c: configure transcoder timings */ gen11_dsi_set_transcoder_timings(encoder, pipe_config); + /* step6d: enable dsi transcoder */ + gen11_dsi_enable_transcoder(encoder); }