From patchwork Fri Feb 15 20:50:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: kernel test robot via dri-devel X-Patchwork-Id: 10816021 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 0BFE71399 for ; Fri, 15 Feb 2019 22:15:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F01182FED1 for ; Fri, 15 Feb 2019 22:15:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E4EB52FFE4; Fri, 15 Feb 2019 22:15:38 +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=unavailable 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 B0A102FED1 for ; Fri, 15 Feb 2019 22:15:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6266F6EBB4; Fri, 15 Feb 2019 22:15:31 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id AC7116EB85; Fri, 15 Feb 2019 20:57:40 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Feb 2019 12:57:40 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,373,1544515200"; d="scan'208";a="134685221" Received: from mint-dev.iind.intel.com ([10.223.25.164]) by orsmga002.jf.intel.com with ESMTP; 15 Feb 2019 12:57:38 -0800 To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, daniel.vetter@ffwll.ch, tomas.winkler@intel.com, uma.shankar@intel.com Subject: [PATCH v14 10/32] drm/i915: Handle HDCP2.2 downstream topology change Date: Sat, 16 Feb 2019 02:20:59 +0530 Message-Id: <1550263881-16082-11-git-send-email-ramalingam.c@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1550263881-16082-1-git-send-email-ramalingam.c@intel.com> References: <1550263881-16082-1-git-send-email-ramalingam.c@intel.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Ramalingam C via dri-devel From: kernel test robot via dri-devel Reply-To: Ramalingam C MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP When repeater notifies a downstream topology change, this patch reauthenticate the repeater alone without disabling the hdcp encryption. If that fails then complete reauthentication is executed. v2: Rebased. v3: Typo in commit msg is fixed [Uma] v4: Rebased as part of patch reordering. Minor style fixes. v5: Rebased. v6: Rebased. v7: Errors due to sinks are reported as DEBUG logs. Signed-off-by: Ramalingam C Reviewed-by: Uma Shankar --- drivers/gpu/drm/i915/intel_hdcp.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c index 00fae3963caf..fe0445c0eaac 100644 --- a/drivers/gpu/drm/i915/intel_hdcp.c +++ b/drivers/gpu/drm/i915/intel_hdcp.c @@ -1626,8 +1626,24 @@ static int intel_hdcp2_check_link(struct intel_connector *connector) goto out; } - DRM_DEBUG_KMS("[%s:%d] HDCP2.2 link failed, retrying auth\n", - connector->base.name, connector->base.base.id); + if (ret == HDCP_TOPOLOGY_CHANGE) { + if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED) + goto out; + + DRM_DEBUG_KMS("HDCP2.2 Downstream topology change\n"); + ret = hdcp2_authenticate_repeater_topology(connector); + if (!ret) { + hdcp->value = DRM_MODE_CONTENT_PROTECTION_ENABLED; + schedule_work(&hdcp->prop_work); + goto out; + } + DRM_DEBUG_KMS("[%s:%d] Repeater topology auth failed.(%d)\n", + connector->base.name, connector->base.base.id, + ret); + } else { + DRM_DEBUG_KMS("[%s:%d] HDCP2.2 link failed, retrying auth\n", + connector->base.name, connector->base.base.id); + } ret = _intel_hdcp2_disable(connector); if (ret) {