From patchwork Fri Oct 1 15:11:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Paul X-Patchwork-Id: 12530909 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33155C433F5 for ; Fri, 1 Oct 2021 15:12:21 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F1E3361242 for ; Fri, 1 Oct 2021 15:12:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org F1E3361242 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=poorly.run Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E10CC6EE37; Fri, 1 Oct 2021 15:12:19 +0000 (UTC) Received: from mail-qt1-x829.google.com (mail-qt1-x829.google.com [IPv6:2607:f8b0:4864:20::829]) by gabe.freedesktop.org (Postfix) with ESMTPS id 778646EE37 for ; Fri, 1 Oct 2021 15:12:17 +0000 (UTC) Received: by mail-qt1-x829.google.com with SMTP id x9so9298456qtv.0 for ; Fri, 01 Oct 2021 08:12:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=poorly.run; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=zO0Mw9LdsVfRaHWkvMYUuYsnRqdPaXisDZ87KwKS47g=; b=SJrlAFAHbj7M0DNgLaD5QCpa9T0k1BseQhAHpv8tvh2aogjf1s4V8a05C1z7ckSVRq scjctvq0D0tC/WfEf/GLVhNi6zxqPnCYnleDJt+SRJZfqT3xUj1wvqUSo+Lk/wAb2NGg AWhubd9SR9/cFCGHdAMMtZfGMUY+nABR0mHvhw1h6ABKIAp93N1kAN8IwN6uEOtT9G+j aRYZ+DDNCWFRplTtIWPBYY2AYTynIxeKR3Ll02JNqB3nUq86tTTvGy0rd3INxtk3Pwen qKMPSbC9DhYIElmMvmMbjew+TG8hVD+TWCXDtHsS+wCTyuNB+lY0RfMUBq1hzpYRYSij uvDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=zO0Mw9LdsVfRaHWkvMYUuYsnRqdPaXisDZ87KwKS47g=; b=g8Q/CWjPc9YighdRCjqyrhQOje9V0ZC150y+DH9RsIaw+vVVwQ121JMaz1AEaKWfJp flPnL+8BGIcyXAWW3VSRu2j+zrkNPcKD0ItOvCHmoLCb4COf4MxtoTFOu1CQH6AglqMl wUm/U5nfTVwD+o1A94DzjdMo3oVXM9/8NUYMGIyrWba9PhQW36K4K/YZtZnFh8HHkD8X zn/NuLQP8sjU0+7wTZUfbym5kr4eaWvBEO0LMnarqOVMbnu3t/GppjR5xQUju7vPMIWs IeTpsAbi5Kw4tQK/UnZ/ku7eK+4GsQTjh6RX25fRFHq8a6yjKxWfyq4W4CmmvWzJ5hyF iiUg== X-Gm-Message-State: AOAM530LESz82rq7Zx4ccquseWPdOLLMtxCPz17rteoQVw4SqcJ8hZ7s iTodQKqvO9QVUyawNYNZotX6zUT9jP/XJw== X-Google-Smtp-Source: ABdhPJz1Wd/bBfJfN8/leNcGZsbyUFU0djXaZQac/m2vbKW+0rbrOSLsrxjbxO7u4yN/a72FEx9FYg== X-Received: by 2002:ac8:4c99:: with SMTP id j25mr13735434qtv.191.1633101136293; Fri, 01 Oct 2021 08:12:16 -0700 (PDT) Received: from localhost ([167.100.64.199]) by smtp.gmail.com with ESMTPSA id x8sm3450015qtv.5.2021.10.01.08.12.15 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 01 Oct 2021 08:12:16 -0700 (PDT) From: Sean Paul To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, freedreno@lists.freedesktop.org Cc: swboyd@chromium.org, jani.nikula@linux.intel.com, Sean Paul , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter Subject: [PATCH v3 06/14] drm/i915/hdcp: Retain hdcp_capable return codes Date: Fri, 1 Oct 2021 11:11:35 -0400 Message-Id: <20211001151145.55916-7-sean@poorly.run> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20211001151145.55916-1-sean@poorly.run> References: <20211001151145.55916-1-sean@poorly.run> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Sean Paul The shim functions return error codes, but they are discarded in intel_hdcp.c. This patch plumbs the return codes through so they are properly handled. Acked-by: Jani Nikula Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20210913175747.47456-7-sean@poorly.run #v1 Link: https://patchwork.freedesktop.org/patch/msgid/20210915203834.1439-7-sean@poorly.run #v2 Changes in v2: -None Changes in v3: -None --- .../drm/i915/display/intel_display_debugfs.c | 9 +++- drivers/gpu/drm/i915/display/intel_hdcp.c | 51 ++++++++++--------- drivers/gpu/drm/i915/display/intel_hdcp.h | 4 +- 3 files changed, 37 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index 309d74fd86ce..88e71aeb88a2 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -644,6 +644,7 @@ static void intel_panel_info(struct seq_file *m, struct intel_panel *panel) static void intel_hdcp_info(struct seq_file *m, struct intel_connector *intel_connector) { + int ret; bool hdcp_cap, hdcp2_cap; if (!intel_connector->hdcp.shim) { @@ -651,8 +652,12 @@ static void intel_hdcp_info(struct seq_file *m, goto out; } - hdcp_cap = intel_hdcp_capable(intel_connector); - hdcp2_cap = intel_hdcp2_capable(intel_connector); + ret = intel_hdcp_capable(intel_connector, &hdcp_cap); + if (ret) + hdcp_cap = false; + ret = intel_hdcp2_capable(intel_connector, &hdcp2_cap); + if (ret) + hdcp2_cap = false; if (hdcp_cap) seq_puts(m, "HDCP1.4 "); diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c index af166baf8c71..59275919e7b9 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -153,50 +153,49 @@ int intel_hdcp_read_valid_bksv(struct intel_digital_port *dig_port, } /* Is HDCP1.4 capable on Platform and Sink */ -bool intel_hdcp_capable(struct intel_connector *connector) +int intel_hdcp_capable(struct intel_connector *connector, bool *capable) { struct intel_digital_port *dig_port = intel_attached_dig_port(connector); const struct intel_hdcp_shim *shim = connector->hdcp.shim; - bool capable = false; u8 bksv[5]; + *capable = false; + if (!shim) - return capable; + return 0; - if (shim->hdcp_capable) { - shim->hdcp_capable(dig_port, &capable); - } else { - if (!intel_hdcp_read_valid_bksv(dig_port, shim, bksv)) - capable = true; - } + if (shim->hdcp_capable) + return shim->hdcp_capable(dig_port, capable); + + if (!intel_hdcp_read_valid_bksv(dig_port, shim, bksv)) + *capable = true; - return capable; + return 0; } /* Is HDCP2.2 capable on Platform and Sink */ -bool intel_hdcp2_capable(struct intel_connector *connector) +int intel_hdcp2_capable(struct intel_connector *connector, bool *capable) { struct intel_digital_port *dig_port = intel_attached_dig_port(connector); struct drm_i915_private *dev_priv = to_i915(connector->base.dev); struct intel_hdcp *hdcp = &connector->hdcp; - bool capable = false; + + *capable = false; /* I915 support for HDCP2.2 */ if (!hdcp->hdcp2_supported) - return false; + return 0; /* MEI interface is solid */ mutex_lock(&dev_priv->hdcp_comp_mutex); if (!dev_priv->hdcp_comp_added || !dev_priv->hdcp_master) { mutex_unlock(&dev_priv->hdcp_comp_mutex); - return false; + return 0; } mutex_unlock(&dev_priv->hdcp_comp_mutex); /* Sink's capability for HDCP2.2 */ - hdcp->shim->hdcp_2_2_capable(dig_port, &capable); - - return capable; + return hdcp->shim->hdcp_2_2_capable(dig_port, capable); } static bool intel_hdcp_in_use(struct drm_i915_private *dev_priv, @@ -2332,6 +2331,7 @@ int intel_hdcp_enable(struct intel_connector *connector, struct intel_digital_port *dig_port = intel_attached_dig_port(connector); struct intel_hdcp *hdcp = &connector->hdcp; unsigned long check_link_interval = DRM_HDCP_CHECK_PERIOD_MS; + bool capable; int ret = -EINVAL; if (!hdcp->shim) @@ -2350,21 +2350,27 @@ int intel_hdcp_enable(struct intel_connector *connector, * Considering that HDCP2.2 is more secure than HDCP1.4, If the setup * is capable of HDCP2.2, it is preferred to use HDCP2.2. */ - if (intel_hdcp2_capable(connector)) { + ret = intel_hdcp2_capable(connector, &capable); + if (capable) { ret = _intel_hdcp2_enable(connector); - if (!ret) + if (!ret) { check_link_interval = DRM_HDCP2_CHECK_PERIOD_MS; + goto out; + } } /* * When HDCP2.2 fails and Content Type is not Type1, HDCP1.4 will * be attempted. */ - if (ret && intel_hdcp_capable(connector) && - hdcp->content_type != DRM_MODE_HDCP_CONTENT_TYPE1) { + ret = intel_hdcp_capable(connector, &capable); + if (ret) + goto out; + + if (capable && hdcp->content_type != DRM_MODE_HDCP_CONTENT_TYPE1) ret = _intel_hdcp_enable(connector); - } +out: if (!ret) { schedule_delayed_work(&hdcp->check_work, check_link_interval); intel_hdcp_update_value(connector, @@ -2372,7 +2378,6 @@ int intel_hdcp_enable(struct intel_connector *connector, true); } -out: mutex_unlock(&dig_port->hdcp_mutex); mutex_unlock(&hdcp->mutex); return ret; diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h b/drivers/gpu/drm/i915/display/intel_hdcp.h index 7c5fd84a7b65..f06f6e5a2b1a 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.h +++ b/drivers/gpu/drm/i915/display/intel_hdcp.h @@ -33,8 +33,8 @@ void intel_hdcp_update_pipe(struct intel_atomic_state *state, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state); bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port); -bool intel_hdcp_capable(struct intel_connector *connector); -bool intel_hdcp2_capable(struct intel_connector *connector); +int intel_hdcp_capable(struct intel_connector *connector, bool *capable); +int intel_hdcp2_capable(struct intel_connector *connector, bool *capable); void intel_hdcp_component_init(struct drm_i915_private *dev_priv); void intel_hdcp_component_fini(struct drm_i915_private *dev_priv); void intel_hdcp_cleanup(struct intel_connector *connector);