From patchwork Wed Apr 19 15:43:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Yacoub X-Patchwork-Id: 13217062 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 3345BC77B73 for ; Wed, 19 Apr 2023 15:43:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C181810EA0B; Wed, 19 Apr 2023 15:43:37 +0000 (UTC) Received: from mail-yw1-x112e.google.com (mail-yw1-x112e.google.com [IPv6:2607:f8b0:4864:20::112e]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3C2B610EA05 for ; Wed, 19 Apr 2023 15:43:30 +0000 (UTC) Received: by mail-yw1-x112e.google.com with SMTP id 00721157ae682-552ae3e2cbeso3699027b3.13 for ; Wed, 19 Apr 2023 08:43:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1681919010; x=1684511010; 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=AgM5DNAbByQcSOHaY5mvGMNpO1uYMrywa3bmao8OTZM=; b=mbM921hSm2JhkPdN5YdwotQkK/gCGxk1O8z+6CnwMKG8BFZjZk0DkEzOLcD2lWTo/c zCtViLcGlCVmucOYUhWlyZx9gJk/1FPiMeGqbSZouaQyjygz4ysuO07ipm+g5Mxs5Qhq ooR25rOmGBKwL2PctrNxpcYDj0VZRHaO0+DwY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681919010; x=1684511010; 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=AgM5DNAbByQcSOHaY5mvGMNpO1uYMrywa3bmao8OTZM=; b=JPoTCodYJvcdGaeLXX7jZyBv0GNqxhwkxJuge2troD+cND//VFG+yy6ph75z6SAdA/ 8/qhYiZmayOPXFxCZegNY0sxcb5EXD4UG2vE2Tn/mYVc9TE4olUm1p9c7NZt5RjOTXZy c4q5Ok8STVgt+4vKE8P4o4uCoG/4nypE0QD1vVhU99S+2zibBfQu5Z38BiBW8PGoliO2 P86Ra9OfgI+Nq14yHnZo25oG3ML/63gcb0YvQuMcvKn95rBI48L5iPka39cErey98xJk y8lHNUTRT/jNoY+9ZftGOq9e9qBw5rSxf46ZXHifO/fVNFBFX07wZ8YUxjZ/EqroCo2Q mFgw== X-Gm-Message-State: AAQBX9cPKegljVvMq1UR2qJhfHw6FXFysDqyzGzBVU7rKDUKisFnGkb0 g4zEt9EU2UKloZEDa9OJM2PZLg== X-Google-Smtp-Source: AKy350bny0qBnMgS8oAY0ZjZzTFchIzAlYHYYWPFmkzTjVp+EJxAnrqvB9Iatjq/kLAzR2YY5pwQSw== X-Received: by 2002:a0d:d687:0:b0:552:d924:cb44 with SMTP id y129-20020a0dd687000000b00552d924cb44mr3679261ywd.10.1681919009826; Wed, 19 Apr 2023 08:43:29 -0700 (PDT) Received: from localhost ([2620:0:1035:15:55c6:7cf1:a68:79b0]) by smtp.gmail.com with UTF8SMTPSA id 189-20020a8117c6000000b00545a08184b1sm4485845ywx.65.2023.04.19.08.43.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 19 Apr 2023 08:43:29 -0700 (PDT) From: Mark Yacoub X-Google-Original-From: Mark Yacoub To: David Airlie , Daniel Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Subject: [PATCH v10 02/10] drm/hdcp: Avoid changing crtc state in hdcp atomic check Date: Wed, 19 Apr 2023 11:43:12 -0400 Message-ID: <20230419154321.1993419-3-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 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: , Cc: suraj.kandpal@intel.com, 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: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Sean Paul Instead of forcing a modeset in the hdcp atomic check, rename to drm_hdcp_has_changed and return true if the content protection value is changing and let the driver decide whether a modeset is required or not. Acked-by: Jani Nikula Reviewed-by: Rodrigo Vivi 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: -Rebase: modifications in drm_hdcp_helper.c instead of drm_hdcp.c Changes in v7: -Renamed the function from drm_hdcp_atomic_check to drm_hdcp_has_changed (Dmitry Baryshkov) drivers/gpu/drm/display/drm_hdcp_helper.c | 39 ++++++++++++++------- drivers/gpu/drm/i915/display/intel_atomic.c | 6 ++-- include/drm/display/drm_hdcp_helper.h | 2 +- 3 files changed, 30 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/display/drm_hdcp_helper.c b/drivers/gpu/drm/display/drm_hdcp_helper.c index 7ca390b3ea106..34baf2b97cd87 100644 --- a/drivers/gpu/drm/display/drm_hdcp_helper.c +++ b/drivers/gpu/drm/display/drm_hdcp_helper.c @@ -422,18 +422,21 @@ void drm_hdcp_update_content_protection(struct drm_connector *connector, EXPORT_SYMBOL(drm_hdcp_update_content_protection); /** - * drm_hdcp_atomic_check - Helper for drivers to call during connector->atomic_check + * drm_hdcp_has_changed - Helper for drivers to call during connector->atomic_check * * @state: pointer to the atomic state being checked * @connector: drm_connector on which content protection state needs an update * * This function can be used by display drivers to perform an atomic check on the - * hdcp state elements. If hdcp state has changed, this function will set - * mode_changed on the crtc driving the connector so it can update its hardware - * to match the hdcp state. + * hdcp state elements. If hdcp state has changed in a manner which requires the + * driver to enable or disable content protection, this function will return + * true. + * + * Returns: + * true if the driver must enable/disable hdcp, false otherwise */ -void drm_hdcp_atomic_check(struct drm_connector *connector, - struct drm_atomic_state *state) +bool drm_hdcp_has_changed(struct drm_connector *connector, + struct drm_atomic_state *state) { struct drm_connector_state *new_conn_state, *old_conn_state; struct drm_crtc_state *new_crtc_state; @@ -450,19 +453,31 @@ void drm_hdcp_atomic_check(struct drm_connector *connector, * If the connector is being disabled with CP enabled, mark it * desired so it's re-enabled when the connector is brought back */ - if (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED) + if (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED) { new_conn_state->content_protection = DRM_MODE_CONTENT_PROTECTION_DESIRED; - return; + return true; + } + return false; } new_crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc); if (drm_atomic_crtc_needs_modeset(new_crtc_state) && (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED && - new_hdcp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED)) + new_hdcp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED)) { new_conn_state->content_protection = DRM_MODE_CONTENT_PROTECTION_DESIRED; + return true; + } + + /* + * Coming back from UNDESIRED state, CRTC change or re-enablement requires + * the driver to try CP enable. + */ + if (new_hdcp == DRM_MODE_CONTENT_PROTECTION_DESIRED && + new_conn_state->crtc != old_conn_state->crtc) + return true; /* * Nothing to do if content type is unchanged and one of: @@ -477,9 +492,9 @@ void drm_hdcp_atomic_check(struct drm_connector *connector, new_hdcp == DRM_MODE_CONTENT_PROTECTION_DESIRED)) { if (old_conn_state->hdcp_content_type == new_conn_state->hdcp_content_type) - return; + return false; } - new_crtc_state->mode_changed = true; + return true; } -EXPORT_SYMBOL(drm_hdcp_atomic_check); +EXPORT_SYMBOL(drm_hdcp_has_changed); diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c index e9d00b6a63d39..23a6ba315a22e 100644 --- a/drivers/gpu/drm/i915/display/intel_atomic.c +++ b/drivers/gpu/drm/i915/display/intel_atomic.c @@ -124,8 +124,6 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn, to_intel_digital_connector_state(old_state); struct drm_crtc_state *crtc_state; - drm_hdcp_atomic_check(conn, state); - if (!new_state->crtc) return 0; @@ -141,8 +139,8 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn, new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio || new_conn_state->base.content_type != old_conn_state->base.content_type || new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode || - new_conn_state->base.privacy_screen_sw_state != old_conn_state->base.privacy_screen_sw_state || - !drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) + !drm_connector_atomic_hdr_metadata_equal(old_state, new_state) || + drm_hdcp_has_changed(conn, state)) crtc_state->mode_changed = true; return 0; diff --git a/include/drm/display/drm_hdcp_helper.h b/include/drm/display/drm_hdcp_helper.h index dd02b2e72a502..703421fcdf96c 100644 --- a/include/drm/display/drm_hdcp_helper.h +++ b/include/drm/display/drm_hdcp_helper.h @@ -19,7 +19,7 @@ int drm_hdcp_check_ksvs_revoked(struct drm_device *dev, u8 *ksvs, u32 ksv_count) int drm_connector_attach_content_protection_property(struct drm_connector *connector, bool hdcp_content_type); void drm_hdcp_update_content_protection(struct drm_connector *connector, u64 val); -void drm_hdcp_atomic_check(struct drm_connector *connector, +bool drm_hdcp_has_changed(struct drm_connector *connector, struct drm_atomic_state *state); #endif