From patchwork Wed Feb 14 14:13:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 10219087 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 C579F60467 for ; Wed, 14 Feb 2018 14:20:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B7EDA288FC for ; Wed, 14 Feb 2018 14:20:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AC85728FEE; Wed, 14 Feb 2018 14:20:40 +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]) (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 556F0288FC for ; Wed, 14 Feb 2018 14:20:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 661186E421; Wed, 14 Feb 2018 14:20:36 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id F0DB06E421 for ; Wed, 14 Feb 2018 14:20:35 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Feb 2018 06:20:35 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,512,1511856000"; d="scan'208";a="204076910" Received: from mint-dev.iind.intel.com ([10.223.25.164]) by fmsmga005.fm.intel.com with ESMTP; 14 Feb 2018 06:20:33 -0800 From: Ramalingam C To: seanpaul@chromium.org, intel-gfx@lists.freedesktop.org, rodrigo.vivi@intel.com, daniel.vetter@ffwll.ch Date: Wed, 14 Feb 2018 19:43:36 +0530 Message-Id: <1518617638-21684-22-git-send-email-ramalingam.c@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1518617638-21684-1-git-send-email-ramalingam.c@intel.com> References: <1518617638-21684-1-git-send-email-ramalingam.c@intel.com> Subject: [Intel-gfx] [PATCH 21/43] misc/mei/hdcp: Closing wired HDCP2.2 Tx Session X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tomas.winkler@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Request the ME to terminate the HDCP2.2 session for a port. On Success, ME FW will mark the intel port as Deauthenticated and terminate the wired HDCP2.2 Tx session started due to the cmd WIRED_INITIATE_HDCP2_SESSION. Signed-off-by: Ramalingam C --- drivers/misc/mei/mei_hdcp.c | 63 +++++++++++++++++++++++++++++++++++++++++++++ include/linux/mei_hdcp.h | 5 ++++ 2 files changed, 68 insertions(+) diff --git a/drivers/misc/mei/mei_hdcp.c b/drivers/misc/mei/mei_hdcp.c index 030c1604eb57..b4012bd259b8 100644 --- a/drivers/misc/mei/mei_hdcp.c +++ b/drivers/misc/mei/mei_hdcp.c @@ -773,6 +773,69 @@ int mei_enable_hdcp_authentication(struct mei_hdcp_data *data) } EXPORT_SYMBOL(mei_enable_hdcp_authentication); +/** + * me_close_hdcp_session: + * Function to close the Wired HDCP Tx session of ME FW. + * This also disables the authenticated state of the port. + * + * @data : Intel HW specific Data + * + * Returns 0 on Success, <0 on Failure + */ +int mei_close_hdcp_session(struct mei_hdcp_data *data) +{ + struct wired_cmd_close_session_in session_close_in = { { 0 } }; + struct wired_cmd_close_session_out session_close_out = { { 0 } }; + enum me_status status; + struct device *dev; + ssize_t byte; + + if (!data) + return -EINVAL; + + /* check for the mei_device enabled or not */ + if (!mei_cldev_active_and_enabled(data->cldev)) + return -ENODEV; + + dev = &data->cldev->dev; + + /* Fill header details */ + session_close_in.header.api_version = HDCP_API_VERSION; + session_close_in.header.command_id = WIRED_CLOSE_SESSION; + session_close_in.header.status = ME_HDCP_STATUS_SUCCESS; + session_close_in.header.buffer_len = + WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN; + + /* Fill in the In Data */ + session_close_in.port.integrated_port_type = data->port_type; + session_close_in.port.physical_port = data->port; + + + /* Request to ME */ + byte = mei_cldev_send(data->cldev, (u8 *)&session_close_in, + sizeof(session_close_in)); + if (byte < 0) { + dev_err(dev, "mei_cldev_send failed. %d\n", (int)byte); + return byte; + } + + /* Response from ME */ + byte = mei_cldev_recv(data->cldev, (u8 *)&session_close_out, + sizeof(session_close_out)); + if (byte < 0) { + dev_err(dev, "mei_cldev_recv failed. %d\n", (int)byte); + return byte; + } + + status = (enum me_status)session_close_out.header.status; + if (status != ME_HDCP_STATUS_SUCCESS) { + dev_err(dev, "Session Close Failed. status: 0x%X\n", status); + return -1; + } + return 0; +} +EXPORT_SYMBOL(mei_close_hdcp_session); + static int mei_hdcp_probe(struct mei_cl_device *cldev, const struct mei_cl_device_id *id) { diff --git a/include/linux/mei_hdcp.h b/include/linux/mei_hdcp.h index cb8bf3b0f022..031251a1424a 100644 --- a/include/linux/mei_hdcp.h +++ b/include/linux/mei_hdcp.h @@ -129,6 +129,7 @@ mei_repeater_check_flow_prepare_ack(struct mei_hdcp_data *data, int mei_verify_mprime(struct mei_hdcp_data *data, struct hdcp2_rep_stream_ready *stream_ready); int mei_enable_hdcp_authentication(struct mei_hdcp_data *data); +int mei_close_hdcp_session(struct mei_hdcp_data *data); #else static inline int mei_hdcp_cldev_get_reference(void *client_data, @@ -206,5 +207,9 @@ static inline int mei_enable_hdcp_authentication(struct mei_hdcp_data *data) { return -ENODEV; } +static inline int mei_close_hdcp_session(struct mei_hdcp_data *data) +{ + return -ENODEV; +} #endif /* defined (CONFIG_INTEL_MEI_HDCP) */ #endif /* defined (_LINUX_MEI_HDCP_H) */