From patchwork Mon Jun 6 13:29:12 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kahola X-Patchwork-Id: 9158153 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 DC64660759 for ; Mon, 6 Jun 2016 13:29:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CFF0B28210 for ; Mon, 6 Jun 2016 13:29:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C4E1A282EE; Mon, 6 Jun 2016 13:29:56 +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 944B628210 for ; Mon, 6 Jun 2016 13:29:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D91F36E51A; Mon, 6 Jun 2016 13:29:54 +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 ESMTP id 750CA6E51C; Mon, 6 Jun 2016 13:29:36 +0000 (UTC) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP; 06 Jun 2016 06:29:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,427,1459839600"; d="scan'208";a="969814888" Received: from sorvi.fi.intel.com ([10.237.72.50]) by orsmga001.jf.intel.com with ESMTP; 06 Jun 2016 06:29:35 -0700 From: Mika Kahola To: dri-devel@lists.freedesktop.org Date: Mon, 6 Jun 2016 16:29:12 +0300 Message-Id: <1465219753-3737-11-git-send-email-mika.kahola@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1465219753-3737-1-git-send-email-mika.kahola@intel.com> References: <1465219753-3737-1-git-send-email-mika.kahola@intel.com> Cc: daniel.vetter@ffwll.ch, intel-gfx@lists.freedesktop.org Subject: [Intel-gfx] [PATCH v4 10/11] drm/i915: Update bits per component for display info 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 DisplayPort branch device may define max supported bits per component. Update display info based on this value if bpc is defined. Signed-off-by: Mika Kahola --- drivers/gpu/drm/i915/intel_dp.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 1b94347..ad3ff37 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -3932,6 +3932,17 @@ intel_dp_detect_dpcd(struct intel_dp *intel_dp) { uint8_t *dpcd = intel_dp->dpcd; uint8_t type; + uint8_t cap[4]; + + if (dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT) { + int bpc; + + drm_dp_downstream_port_cap(&intel_dp->aux, dpcd, cap); + bpc = drm_dp_downstream_max_bpc(dpcd, cap); + + if (bpc > 0) + intel_dp->attached_connector->base.display_info.bpc = bpc; + } if (!intel_dp_get_dpcd(intel_dp)) return connector_status_disconnected; @@ -3969,6 +3980,7 @@ intel_dp_detect_dpcd(struct intel_dp *intel_dp) return connector_status_unknown; } + /* Anything else is out of spec, warn and ignore */ DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); return connector_status_disconnected;