From patchwork Tue Apr 3 13:57:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 10321247 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 DB03660318 for ; Tue, 3 Apr 2018 14:13:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CAB4228528 for ; Tue, 3 Apr 2018 14:13:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C970C288D7; Tue, 3 Apr 2018 14:13:36 +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 17C7228D74 for ; Tue, 3 Apr 2018 14:12:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 67EED6E55E; Tue, 3 Apr 2018 14:09:17 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4D0626E55C; Tue, 3 Apr 2018 14:09:15 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Apr 2018 07:05:34 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,401,1517904000"; d="scan'208";a="30681065" Received: from mint-dev.iind.intel.com ([10.223.25.164]) by orsmga008.jf.intel.com with ESMTP; 03 Apr 2018 07:05:30 -0700 From: Ramalingam C To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, seanpaul@chromium.org, daniel@ffwll.ch, chris@chris-wilson.co.uk, jani.nikula@linux.intel.com, tomas.winkler@intel.com, alexander.usyskin@intel.com Date: Tue, 3 Apr 2018 19:27:43 +0530 Message-Id: <1522763873-23041-31-git-send-email-ramalingam.c@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1522763873-23041-1-git-send-email-ramalingam.c@intel.com> References: <1522763873-23041-1-git-send-email-ramalingam.c@intel.com> Subject: [Intel-gfx] [PATCH v3 30/40] drm/i915: Initialize HDCP2.2 and its MEI interface 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: rodrigo.vivi@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Initialize HDCP2.2 support. This includes the mei interface initialization along with required notifier registration. v2: mei interface handle is protected with mutex. [Chris Wilson] v3: Notifiers are used for the mei interface state. Signed-off-by: Ramalingam C --- drivers/gpu/drm/i915/intel_dp.c | 3 +- drivers/gpu/drm/i915/intel_drv.h | 5 +- drivers/gpu/drm/i915/intel_hdcp.c | 104 +++++++++++++++++++++++++++++++++++++- drivers/gpu/drm/i915/intel_hdmi.c | 2 +- 4 files changed, 109 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 9a4a51e79fa1..955a20208097 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -6381,7 +6381,8 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port, intel_dp_add_properties(intel_dp, connector); if (is_hdcp_supported(dev_priv, port) && !intel_dp_is_edp(intel_dp)) { - int ret = intel_hdcp_init(intel_connector, &intel_dp_hdcp_shim); + int ret = intel_hdcp_init(intel_connector, &intel_dp_hdcp_shim, + false); if (ret) DRM_DEBUG_KMS("HDCP init failed, skipping.\n"); } diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index ca06d9a158f6..2f14756b4b0e 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -442,7 +442,7 @@ struct intel_hdcp { /* mei interface related information */ struct mei_cl_device *cldev; struct mei_hdcp_data mei_data; - + struct notifier_block mei_cldev_nb; struct delayed_work hdcp2_check_work; }; @@ -1928,7 +1928,8 @@ void intel_hdcp_atomic_check(struct drm_connector *connector, struct drm_connector_state *old_state, struct drm_connector_state *new_state); int intel_hdcp_init(struct intel_connector *connector, - const struct intel_hdcp_shim *hdcp_shim); + const struct intel_hdcp_shim *hdcp_shim, + bool hdcp2_supported); int intel_hdcp_enable(struct intel_connector *connector); int intel_hdcp_disable(struct intel_connector *connector); int intel_hdcp_check_link(struct intel_connector *connector); diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c index 53d35ee8f683..6eb58a833c7d 100644 --- a/drivers/gpu/drm/i915/intel_hdcp.c +++ b/drivers/gpu/drm/i915/intel_hdcp.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "intel_drv.h" #include "i915_reg.h" @@ -25,6 +26,7 @@ static int _intel_hdcp2_enable(struct intel_connector *connector); static int _intel_hdcp2_disable(struct intel_connector *connector); static void intel_hdcp2_check_work(struct work_struct *work); static int intel_hdcp2_check_link(struct intel_connector *connector); +static int intel_hdcp2_init(struct intel_connector *connector); static int intel_hdcp_poll_ksv_fifo(struct intel_digital_port *intel_dig_port, const struct intel_hdcp_shim *shim) @@ -686,11 +688,15 @@ bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port) } int intel_hdcp_init(struct intel_connector *connector, - const struct intel_hdcp_shim *hdcp_shim) + const struct intel_hdcp_shim *hdcp_shim, + bool hdcp2_supported) { struct intel_hdcp *hdcp = &connector->hdcp; int ret; + if (!hdcp_shim) + return -EINVAL; + ret = drm_connector_attach_content_protection_property( &connector->base); if (ret) @@ -699,7 +705,12 @@ int intel_hdcp_init(struct intel_connector *connector, hdcp->hdcp_shim = hdcp_shim; mutex_init(&hdcp->hdcp_mutex); INIT_DELAYED_WORK(&hdcp->hdcp_check_work, intel_hdcp_check_work); + INIT_DELAYED_WORK(&hdcp->hdcp2_check_work, intel_hdcp2_check_work); INIT_WORK(&hdcp->hdcp_prop_work, intel_hdcp_prop_work); + + if (hdcp2_supported) + intel_hdcp2_init(connector); + return 0; } @@ -1565,3 +1576,94 @@ static void intel_hdcp2_check_work(struct work_struct *work) schedule_delayed_work(&hdcp->hdcp2_check_work, DRM_HDCP2_CHECK_PERIOD_MS); } + +static inline int initialize_mei_hdcp_data(struct intel_connector *connector) +{ + struct intel_hdcp *hdcp = &connector->hdcp; + struct mei_hdcp_data *data = &hdcp->mei_data; + enum port port; + + if (connector->encoder) { + port = connector->encoder->port; + data->port = GET_MEI_DDI_INDEX(port); + } + + data->port_type = INTEGRATED; + data->protocol = hdcp->hdcp_shim->hdcp_protocol(); + + data->k = 1; + if (!data->streams) + data->streams = kcalloc(data->k, + sizeof(struct hdcp2_streamid_type), + GFP_KERNEL); + if (!data->streams) + return -ENOMEM; + + data->streams[0].stream_id = 0; + data->streams[0].stream_type = hdcp->content_type; + + return 0; +} + +static void intel_hdcp2_exit(struct intel_connector *connector) +{ + intel_hdcp_disable(connector); + kfree(connector->hdcp.mei_data.streams); +} + +static int mei_cldev_notify(struct notifier_block *nb, unsigned long event, + void *cldev) +{ + struct intel_hdcp *hdcp = container_of(nb, struct intel_hdcp, + mei_cldev_nb); + struct intel_connector *intel_connector = container_of(hdcp, + struct intel_connector, + hdcp); + + DRM_ERROR("MEI_HDCP Notification. Interface: %s\n", + cldev ? "UP" : "Down"); + + if (event == MEI_CLDEV_ENABLED) { + hdcp->cldev = cldev; + initialize_mei_hdcp_data(intel_connector); + } else { + hdcp->cldev = NULL; + intel_hdcp2_exit(intel_connector); + } + return NOTIFY_OK; +} + +static inline +bool is_hdcp2_supported(struct drm_i915_private *dev_priv) +{ + return (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv) || + IS_KABYLAKE(dev_priv)); +} + +static int intel_hdcp2_init(struct intel_connector *connector) +{ + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); + struct intel_hdcp *hdcp = &connector->hdcp; + int ret; + + if (!is_hdcp2_supported(dev_priv)) + return -EINVAL; + + hdcp->hdcp2_supported = true; + + hdcp->mei_cldev_nb.notifier_call = mei_cldev_notify; + ret = mei_cldev_register_notify(&hdcp->mei_cldev_nb); + if (ret) { + DRM_ERROR("mei_cldev not available. %d\n", ret); + goto exit; + } + + ret = initialize_mei_hdcp_data(connector); + if (ret) + mei_cldev_unregister_notify(&hdcp->mei_cldev_nb); + +exit: + if (ret) + hdcp->hdcp2_supported = false; + return ret; +} diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 1baef4ac7ecb..b8b1086c0cbd 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -2342,7 +2342,7 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port, if (is_hdcp_supported(dev_priv, port)) { int ret = intel_hdcp_init(intel_connector, - &intel_hdmi_hdcp_shim); + &intel_hdmi_hdcp_shim, false); if (ret) DRM_DEBUG_KMS("HDCP init failed, skipping.\n"); }