From patchwork Fri Jun 10 12:28:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kahola X-Patchwork-Id: 9169621 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 1740A604DB for ; Fri, 10 Jun 2016 12:28:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0934C20700 for ; Fri, 10 Jun 2016 12:28:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F27522833F; Fri, 10 Jun 2016 12:28:44 +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=ham 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 B0E5D20700 for ; Fri, 10 Jun 2016 12:28:44 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3BECA89D7B; Fri, 10 Jun 2016 12:28:39 +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 ESMTP id D1AA089958; Fri, 10 Jun 2016 12:28:26 +0000 (UTC) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP; 10 Jun 2016 05:28:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,449,1459839600"; d="scan'208";a="994991498" Received: from sorvi.fi.intel.com ([10.237.72.50]) by orsmga002.jf.intel.com with ESMTP; 10 Jun 2016 05:28:24 -0700 From: Mika Kahola To: dri-devel@lists.freedesktop.org Date: Fri, 10 Jun 2016 15:28:05 +0300 Message-Id: <1465561685-3939-11-git-send-email-mika.kahola@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1465561685-3939-1-git-send-email-mika.kahola@intel.com> References: <1465561685-3939-1-git-send-email-mika.kahola@intel.com> Cc: intel-gfx@lists.freedesktop.org Subject: [Intel-gfx] [PATCH v5 10/10] drm/i915: Add DP branch device info on debugfs X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Signed-off-by: Mika Kahola --- drivers/gpu/drm/i915/i915_debugfs.c | 72 +++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index e4f2c55..442df3a 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2943,9 +2943,81 @@ static void intel_dp_info(struct seq_file *m, { struct intel_encoder *intel_encoder = intel_connector->encoder; struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); + struct drm_dp_revision rev; + bool is_branch_device; + bool detailed_cap_info = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & + DP_DETAILED_CAP_INFO_AVAILABLE; + int type; + int clk; + int bpc; + int cap_size; + uint8_t cap[4]; + char id[6]; 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)); + + 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) { + 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); + } + } + if (intel_encoder->type == INTEL_OUTPUT_EDP) intel_panel_info(m, &intel_connector->panel); }