From patchwork Wed Apr 19 15:43:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Yacoub X-Patchwork-Id: 13217076 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 0E56DC77B78 for ; Wed, 19 Apr 2023 15:43:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BBEBA10EA16; Wed, 19 Apr 2023 15:43:41 +0000 (UTC) Received: from mail-yb1-xb34.google.com (mail-yb1-xb34.google.com [IPv6:2607:f8b0:4864:20::b34]) by gabe.freedesktop.org (Postfix) with ESMTPS id 008B610EA12 for ; Wed, 19 Apr 2023 15:43:38 +0000 (UTC) Received: by mail-yb1-xb34.google.com with SMTP id t15so70184ybb.1 for ; Wed, 19 Apr 2023 08:43:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1681919018; x=1684511018; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=HhPwP/r3eANjET0XqGIj7KU+Rdn8Nz8tK5t+1SGdmRM=; b=ZzWlvweaZ9z3sZctwQiBceEgF06cTeYVSJsvnbKMxB6G68DkqKNL7sHA8dAhak1uqR OptqayZqvQqsYhx9toQb3yMFr6I/LwMwrCpBHs09SGtmewSSu0uZeAUqQD1qVR5ZTvop fVOm3DmriHi2kXtlTmiqH0EshPM5ZHznLTkfw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681919018; x=1684511018; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=HhPwP/r3eANjET0XqGIj7KU+Rdn8Nz8tK5t+1SGdmRM=; b=fTbPJvZRcqZKJwpP2swvSW6D5nZ42cDBJ2i3ZRnQiAIEyXG+FqmDi8D+n/p9JYspu2 ogSb+fMP9D3BcFJkeb6cJu7aZHZarjmS2Fh0bt0iiTOcxTK6WKaOG9J9OZXp+7n1a5pN BxJKR9RVIeGjDurz14VkggIq1uUzdub0giPkXTuGd9Y3jgGbC3xPEt2kiX0lKKnYXNlS RcRQTi+GOhXaUcRKawuOVwDJYE+JCSJQR3QIUCn4heh8v52liWWZCOuSWhFcU6L9HYpZ XCSRCM1uJUKOIlifk1DCfwazbuuJUpSNIISQZDkZ/Euqc8QO1dUI6fXWy9NPxoKLRmGS kEpA== X-Gm-Message-State: AAQBX9cN9VBmVAKStD/Xrzn4A5WS+ez72oNwMWSS04RyBRCTxlBXF/cR Nm9kPv13IUHJvogzDfvyaLCmVQ== X-Google-Smtp-Source: AKy350bMLFnkn4jV0tuG5W2FvvugqDCNjQIN4D1P0mSDn2zmXkRi3aTgxayHp0dV3RQgI9g411WE3Q== X-Received: by 2002:a25:c50f:0:b0:b96:ab2d:368f with SMTP id v15-20020a25c50f000000b00b96ab2d368fmr113007ybe.39.1681919018628; Wed, 19 Apr 2023 08:43:38 -0700 (PDT) Received: from localhost ([2620:0:1035:15:55c6:7cf1:a68:79b0]) by smtp.gmail.com with UTF8SMTPSA id z5-20020a259cc5000000b00b95068ccaeesm1301416ybo.55.2023.04.19.08.43.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 19 Apr 2023 08:43:38 -0700 (PDT) From: Mark Yacoub X-Google-Original-From: Mark Yacoub To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter Date: Wed, 19 Apr 2023 11:43:16 -0400 Message-ID: <20230419154321.1993419-7-markyacoub@google.com> X-Mailer: git-send-email 2.40.0.634.g4ca3ef3211-goog In-Reply-To: <20230419154321.1993419-1-markyacoub@google.com> References: <20230419154321.1993419-1-markyacoub@google.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v10 06/10] drm/i915/hdcp: Retain hdcp_capable return codes X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jani Nikula , Mark Yacoub , intel-gfx@lists.freedesktop.org, dianders@chromium.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, seanpaul@chromium.org, dmitry.baryshkov@linaro.org, freedreno@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Reviewed-by: Rodrigo Vivi Reviewed-by: Suraj Kandpal Signed-off-by: Sean Paul Signed-off-by: Mark Yacoub --- Changes in v2: -None Changes in v3: -None Changes in v4: -None Changes in v5: -None Changes in v6: -Rebased Changes in v7: -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 7bcd90384a46d..a14b86a07e545 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -494,6 +494,7 @@ static void intel_panel_info(struct seq_file *m, 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) { @@ -501,8 +502,12 @@ 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 0a20bc41be55d..61a862ae1f286 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -177,50 +177,49 @@ 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->display.hdcp.comp_mutex); if (!dev_priv->display.hdcp.comp_added || !dev_priv->display.hdcp.master) { mutex_unlock(&dev_priv->display.hdcp.comp_mutex); - return false; + return 0; } mutex_unlock(&dev_priv->display.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, @@ -2355,6 +2354,7 @@ 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) @@ -2373,21 +2373,27 @@ 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, @@ -2395,7 +2401,6 @@ 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 7c5fd84a7b65a..f06f6e5a2b1ad 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);