From patchwork Mon May 23 10:50:55 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kahola X-Patchwork-Id: 9131545 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 98E9360459 for ; Mon, 23 May 2016 11:02:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8D8352822E for ; Mon, 23 May 2016 11:02:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8268828233; Mon, 23 May 2016 11:02:15 +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 4D1B22822E for ; Mon, 23 May 2016 11:02:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7D2986E599; Mon, 23 May 2016 11:02:05 +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 1D5916E583; Mon, 23 May 2016 10:51:21 +0000 (UTC) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP; 23 May 2016 03:51:21 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,355,1459839600"; d="scan'208";a="982783371" Received: from sorvi.fi.intel.com ([10.237.72.50]) by orsmga002.jf.intel.com with ESMTP; 23 May 2016 03:51:20 -0700 From: Mika Kahola To: dri-devel@lists.freedesktop.org Subject: [PATCH v3 10/12] drm/i915: Read DP branch device HW revision Date: Mon, 23 May 2016 13:50:55 +0300 Message-Id: <1464000657-16867-11-git-send-email-mika.kahola@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1464000657-16867-1-git-send-email-mika.kahola@intel.com> References: <1464000657-16867-1-git-send-email-mika.kahola@intel.com> X-Mailman-Approved-At: Mon, 23 May 2016 11:02:04 +0000 Cc: intel-gfx@lists.freedesktop.org, jim.bride@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 HW revision is mandatory field for DisplayPort branch devices. This is defined in DPCD register field 0x509. Signed-off-by: Mika Kahola --- drivers/gpu/drm/i915/intel_dp.c | 5 +++++ include/drm/drm_dp_helper.h | 2 ++ 2 files changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 2b768da..12ab26b 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -3463,6 +3463,11 @@ intel_dp_probe_oui(struct intel_dp *intel_dp) if (drm_dp_dpcd_read(&intel_dp->aux, DP_BRANCH_ID, intel_dp->bd.id, sizeof(intel_dp->bd.id)) == sizeof(intel_dp->bd.id)) DRM_DEBUG_KMS("Device ID: %s\n", intel_dp->bd.id); + + if (drm_dp_dpcd_read(&intel_dp->aux, DP_BRANCH_HW_REV, &intel_dp->bd.hw_rev, + sizeof(intel_dp->bd.hw_rev)) == sizeof(intel_dp->bd.hw_rev)) + DRM_DEBUG_KMS("HW revision: %.2d.%.2d\n", + intel_dp->bd.hw_rev & 0xf, (intel_dp->bd.hw_rev>>4) & 0xf); } } diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index f1fc4e2..d0965ca 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -458,6 +458,7 @@ #define DP_SINK_OUI 0x400 #define DP_BRANCH_OUI 0x500 #define DP_BRANCH_ID 0x503 +#define DP_BRANCH_HW_REV 0x509 #define DP_SET_POWER 0x600 # define DP_SET_POWER_D0 0x1 @@ -871,6 +872,7 @@ struct drm_dp_bd { int type; bool hpd; uint8_t id[6]; + uint8_t hw_rev; union { struct drm_dp_vga vga; struct drm_dp_dvi dvi;