From patchwork Tue Nov 27 10:43:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramalingam C X-Patchwork-Id: 10700241 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 AD58513AD for ; Tue, 27 Nov 2018 10:49:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9DF842ACA3 for ; Tue, 27 Nov 2018 10:49:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 91F712ACA8; Tue, 27 Nov 2018 10:49:11 +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 392062ACA3 for ; Tue, 27 Nov 2018 10:49:11 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 42C5F6E186; Tue, 27 Nov 2018 10:49:06 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id EF3A06E0F4; Tue, 27 Nov 2018 10:48:34 +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 orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 Nov 2018 02:48:34 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,286,1539673200"; d="scan'208";a="95578109" Received: from mint-dev.iind.intel.com ([10.223.25.164]) by orsmga008.jf.intel.com with ESMTP; 27 Nov 2018 02:48:32 -0800 From: Ramalingam C To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, daniel.vetter@ffwll.ch, tomas.winkler@intel.com Subject: [PATCH v8 33/35] drm/i915: Fix KBL HDCP2.2 encrypt status signalling Date: Tue, 27 Nov 2018 16:13:31 +0530 Message-Id: <1543315413-24302-34-git-send-email-ramalingam.c@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1543315413-24302-1-git-send-email-ramalingam.c@intel.com> References: <1543315413-24302-1-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: , Cc: uma.shankar@intel.com MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Implement the required WA sequence for KBL to fix the incorrect positioning of the window of oppurtunity and enc_en signalling. Signed-off-by: Ramalingam C --- drivers/gpu/drm/i915/intel_hdcp.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c index 9f4056e156ec..654a076c58e4 100644 --- a/drivers/gpu/drm/i915/intel_hdcp.c +++ b/drivers/gpu/drm/i915/intel_hdcp.c @@ -12,6 +12,7 @@ #include #include #include +#include #include "intel_drv.h" #include "i915_reg.h" @@ -24,6 +25,27 @@ __p == PORT_A ? MEI_DDI_A : (enum mei_hdcp_ddi)__p;\ }) +static void kbl_repositioning_enc_en_signal(struct intel_connector *connector) +{ + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); + struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector); + struct intel_hdcp *hdcp = &connector->hdcp; + struct drm_crtc *crtc = connector->base.state->crtc; + struct intel_crtc *intel_crtc = container_of(crtc, + struct intel_crtc, base); + u32 scanline; + + for (;;) { + scanline = I915_READ(PIPEDSL(intel_crtc->pipe)); + if (scanline > 100 && scanline < 200) + break; + usleep_range(25, 50); + } + + hdcp->shim->toggle_signalling(intel_dig_port, false); + hdcp->shim->toggle_signalling(intel_dig_port, true); +} + static bool intel_hdcp_is_ksv_valid(u8 *ksv) { @@ -1527,6 +1549,13 @@ static int hdcp2_enable_encryption(struct intel_connector *connector) } if (I915_READ(HDCP2_STATUS_DDI(port)) & LINK_AUTH_STATUS) { + /* + * WA: To fix incorrect positioning of the window of + * opportunity and enc_en signalling in KABYLAKE. + */ + if (IS_KABYLAKE(dev_priv) && hdcp->shim->toggle_signalling) + kbl_repositioning_enc_en_signal(connector); + /* Link is Authenticated. Now set for Encryption */ I915_WRITE(HDCP2_CTL_DDI(port), I915_READ(HDCP2_CTL_DDI(port)) |