From patchwork Wed Jul 6 11:04:54 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kahola X-Patchwork-Id: 9217503 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 88FD660752 for ; Thu, 7 Jul 2016 01:08:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 797C5285AA for ; Thu, 7 Jul 2016 01:08:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6E51D285AF; Thu, 7 Jul 2016 01:08:54 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2C793285AA for ; Thu, 7 Jul 2016 01:08:54 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3F13E6E0F4; Thu, 7 Jul 2016 01:08:43 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id A1E936E63C; Wed, 6 Jul 2016 11:05:22 +0000 (UTC) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga103.jf.intel.com with ESMTP; 06 Jul 2016 04:05:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,318,1464678000"; d="scan'208";a="841419758" Received: from sorvi.fi.intel.com ([10.237.72.50]) by orsmga003.jf.intel.com with ESMTP; 06 Jul 2016 04:05:22 -0700 From: Mika Kahola To: dri-devel@lists.freedesktop.org Subject: [PATCH v6 10/10] drm/i915: Add DP branch device info on debugfs Date: Wed, 6 Jul 2016 14:04:54 +0300 Message-Id: <1467803094-10473-11-git-send-email-mika.kahola@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1467803094-10473-1-git-send-email-mika.kahola@intel.com> References: <1467803094-10473-1-git-send-email-mika.kahola@intel.com> X-Mailman-Approved-At: Thu, 07 Jul 2016 01:08:42 +0000 Cc: daniel.vetter@ffwll.ch, intel-gfx@lists.freedesktop.org, jim.bride@linux.intel.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Read DisplayPort branch device info from through debugfs interface. v2: use drm_dp_helper routines to collect data v3: cleanup to match the drm_dp_helper.c patches introduced earlier in this series v4: move DP branch device info to function 'intel_dp_branch_device_info()' Signed-off-by: Mika Kahola --- drivers/gpu/drm/i915/i915_debugfs.c | 75 +++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 9989b6a..7f57b3c 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2942,16 +2942,91 @@ static void intel_panel_info(struct seq_file *m, struct intel_panel *panel) intel_seq_print_mode(m, 2, mode); } +static void intel_dp_branch_device_info(struct seq_file *m, struct intel_dp *intel_dp) +{ + struct drm_dp_revision rev; + bool detailed_cap_info = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & + DP_DETAILED_CAP_INFO_AVAILABLE; + int type; + int clk; + int bpc; + char id[6]; + + type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; + + switch (type) { + case DP_DS_PORT_TYPE_DP: + seq_printf(m, "\ttype: DisplayPort\n"); + break; + case DP_DS_PORT_TYPE_VGA: + seq_printf(m, "\ttype: VGA\n"); + break; + case DP_DS_PORT_TYPE_DVI: + seq_printf(m, "\ttype: DVI\n"); + break; + case DP_DS_PORT_TYPE_HDMI: + seq_printf(m, "\ttype: HDMI\n"); + break; + case DP_DS_PORT_TYPE_NON_EDID: + seq_printf(m, "\ttype: others without EDID support\n"); + break; + case DP_DS_PORT_TYPE_DP_DUALMODE: + seq_printf(m, "\ttype: DP++\n"); + break; + case DP_DS_PORT_TYPE_WIRELESS: + seq_printf(m, "\ttype: Wireless\n"); + break; + default: + seq_printf(m, "\ttype: N/A\n"); + } + + drm_dp_downstream_id(&intel_dp->aux, id); + seq_printf(m, "\tDevice id: %s\n", id); + + rev = drm_dp_downstream_hw_rev(&intel_dp->aux); + seq_printf(m, "\tHW revision: %.2d.%.2d\n", rev.major, rev.minor); + + rev = drm_dp_downstream_sw_rev(&intel_dp->aux); + seq_printf(m, "\tSW revision: %.2d.%.2d\n", rev.major, rev.minor); + + if (detailed_cap_info) { + clk = drm_dp_downstream_max_clock(intel_dp->dpcd, + intel_dp->downstream_ports); + + if (clk > 0) { + if (type == DP_DS_PORT_TYPE_VGA) + seq_printf(m, "\tMax dot clock: %d kHz\n", clk); + else + seq_printf(m, "\tMax TMDS clock: %d kHz\n", clk); + } + + bpc = drm_dp_downstream_max_bpc(intel_dp->dpcd, + intel_dp->downstream_ports); + + if (bpc > 0) + seq_printf(m, "\tMax bpc: %d\n", bpc); + } +} + static void intel_dp_info(struct seq_file *m, struct intel_connector *intel_connector) { struct intel_encoder *intel_encoder = intel_connector->encoder; struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); + bool is_branch_device; seq_printf(m, "\tDPCD rev: %x\n", intel_dp->dpcd[DP_DPCD_REV]); seq_printf(m, "\taudio support: %s\n", yesno(intel_dp->has_audio)); + if (intel_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) intel_panel_info(m, &intel_connector->panel); + + is_branch_device = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & + DP_DWN_STRM_PORT_PRESENT; + seq_printf(m, "\tbranch device: %s\n", yesno(is_branch_device)); + + if (is_branch_device) + intel_dp_branch_device_info(m, intel_dp); } static void intel_hdmi_info(struct seq_file *m,