From patchwork Wed Sep 15 20:38:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Paul X-Patchwork-Id: 12497473 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F9E4C433F5 for ; Wed, 15 Sep 2021 20:39:19 +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 4D9F56112E for ; Wed, 15 Sep 2021 20:39:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 4D9F56112E 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 B7E866EA43; Wed, 15 Sep 2021 20:39:15 +0000 (UTC) Received: from mail-qk1-x736.google.com (mail-qk1-x736.google.com [IPv6:2607:f8b0:4864:20::736]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6ABA36EA45 for ; Wed, 15 Sep 2021 20:39:12 +0000 (UTC) Received: by mail-qk1-x736.google.com with SMTP id y144so4993085qkb.6 for ; Wed, 15 Sep 2021 13:39:12 -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=7VKNIawHsc9XfVBMaX3UI0a5fXLtwxAelU6sLUv9cVg=; b=P7lrmd802XwFaNC/UEbXGT3AytPsE6o5zfofPk7e79j29KW8LpvvdSL16bP1MvGwVn f0x8EtzIwS9esG9m6iiRMsLOyqM+H9Yg3l3bUtbDJQUEA1c6F30oUJy1UXq47oONdMan pD9kT1al8i+CLI7KTU0B+oqqRub21tGKujdbyrbWG5gxjwKIwxAF6GXvqJ71aSpd35Go 0YVPXfn4pi5z35bGZLEUJ9yqIaGy+1TDZbXYA3Bx0GTooiaKugttbMju4/7g1hQtJN6l 0aa7yfAyLtyOyMzbIz1VKYD1jPusrCphjqH2mIGX4HYAody+EjxRnZ1VwR1HkTSv++yz BVRQ== 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=7VKNIawHsc9XfVBMaX3UI0a5fXLtwxAelU6sLUv9cVg=; b=VDJzw6WeRNzJfMvbwjJ6X7DgAE/aEE4j3x/mi6XQK9aaUlBXA88jdKq2SHLhkv7z88 P/KzTz5n3DGcVzcvr/WPK9WdipBrVZMPye4E+fmyjiof4PGHyL6TMOpV1VkTRsobf7xi JjQ2mSmv9yegLBj7cKFJE1AKH8DZfbwa61SMUn5F0iuDkgPTjL6BCGVW1ndWbkgFcqI+ ZvQnu/X0z5UxbBXEOW/VSHCVpVvco7rfpwzP+uFz9wA8UmlKxiyGZGXFu+issj39cOSi jrE+UaT0j+PsW8PH1HEvdJ8p+xaw7EWExUaWJk9vk8InoI9VsxM3g8YIzzojSq4eBs3e f+RQ== X-Gm-Message-State: AOAM530yVfit9y29idUelK60886OoacXMRT/aNO6BwBB/slV5mpz1T7h jQw4eZaFYNhbbbeHeiTNQiw8zHWsvVPbIQ== X-Google-Smtp-Source: ABdhPJw53JIxzIzHZ5jFB7n0tL0br7FXivG7BZyDE52wJF9ed+4LclausrvAVnB8f6mXx/vobR7DnA== X-Received: by 2002:a05:620a:2549:: with SMTP id s9mr1931589qko.256.1631738351399; Wed, 15 Sep 2021 13:39:11 -0700 (PDT) Received: from localhost ([167.100.64.199]) by smtp.gmail.com with ESMTPSA id e21sm769109qtg.40.2021.09.15.13.39.10 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Wed, 15 Sep 2021 13:39:10 -0700 (PDT) From: Sean Paul To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, freedreno@lists.freedesktop.org Cc: swboyd@chromium.org, Sean Paul , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter Subject: [PATCH v2 06/13] drm/i915/hdcp: Retain hdcp_capable return codes Date: Wed, 15 Sep 2021 16:38:25 -0400 Message-Id: <20210915203834.1439-7-sean@poorly.run> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20210915203834.1439-1-sean@poorly.run> References: <20210915203834.1439-1-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. Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20210913175747.47456-7-sean@poorly.run #v1 Changes in v2: -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 68f4ba8c46e7..5ffd31e9908f 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);