From patchwork Wed Sep 20 14:35:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 13392889 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 7ED99CE79DC for ; Wed, 20 Sep 2023 14:36:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A9ED810E4D7; Wed, 20 Sep 2023 14:35:57 +0000 (UTC) Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id EB52F10E4D5 for ; Wed, 20 Sep 2023 14:35:54 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 530C761C11; Wed, 20 Sep 2023 14:35:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C4BF8C433C9; Wed, 20 Sep 2023 14:35:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695220554; bh=JesZ3/fGi45agkZSRIpZKjw+nUimuCRXqZlxL7MJq34=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=rN6jdbxR+lin7qkeZL8yAqr/9jAXLXWnjbHZLeMB3wWStx51gdaKnwaxY4i882Tzn nvDHWD/Sq+Ts4Rz+N91IJz2929Pg8QrcsD9wsk122eC01Z91DvG1eYbfT5hqq1F+CN dGRQ/N0DItDe+mUiWq3X12tKUAjBdxoUXPgeEP8t4qALwXRQd+qgmtpxrM8lZadLCm hmR4j1P67xycAaOAbEYkcdU8kcI7VIjEXV13xFm2ApyA/JTfkxhtT+DSxIMhfxq1Zq oEC68LBlpqGJYB3uVR5TBDWhqwc+c9FlSNdPM0DyymJdjzyxyt/7zutX+7/74Bv78T EDd+FdC9Y0WBw== From: Maxime Ripard Date: Wed, 20 Sep 2023 16:35:19 +0200 Subject: [PATCH RFC v2 04/37] drm/connector: hdmi: Add helper to get the RGB range MIME-Version: 1.0 Message-Id: <20230920-kms-hdmi-connector-state-v2-4-17932daddd7d@kernel.org> References: <20230920-kms-hdmi-connector-state-v2-0-17932daddd7d@kernel.org> In-Reply-To: <20230920-kms-hdmi-connector-state-v2-0-17932daddd7d@kernel.org> To: Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Emma Anholt , Jonathan Corbet , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=3424; i=mripard@kernel.org; h=from:subject:message-id; bh=JesZ3/fGi45agkZSRIpZKjw+nUimuCRXqZlxL7MJq34=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDKnczJbnTpQ8z3V13da+PPDPnKPHGC5skdTlOr3x/S4Wu /T5DVEFHaUsDGJcDLJiiiwxwuZL4k7Net3JxjcPZg4rE8gQBi5OAZhISBDD/5AFbUndRWYKhxny b5xofhR9Tl/LQ7PfUc06N3zryfolKxgZVhdcd78bEheQzxT0e7OP7ZlfbOUq00O+hSc/yTlpvMe MBwA= X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D 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: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Hans Verkuil , linux-rockchip@lists.infradead.org, Maxime Ripard , linux-sunxi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" HDMI controller drivers will need to figure out the RGB range they need to configure based on a given atomic state. Let's provide a helper to provide that information. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/drm_atomic_state_helper.c | 39 +++++++++++++++++++++++++++++++ include/drm/drm_atomic_state_helper.h | 5 ++++ 2 files changed, 44 insertions(+) diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c index 4b24ebb7e3e8..0f7e5ba555b8 100644 --- a/drivers/gpu/drm/drm_atomic_state_helper.c +++ b/drivers/gpu/drm/drm_atomic_state_helper.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -621,6 +622,15 @@ int drm_atomic_helper_connector_tv_check(struct drm_connector *connector, } EXPORT_SYMBOL(drm_atomic_helper_connector_tv_check); +static const struct drm_display_mode * +connector_state_get_adjusted_mode(const struct drm_connector_state *state) +{ + struct drm_crtc *crtc = state->crtc; + struct drm_crtc_state *crtc_state = crtc->state; + + return &crtc_state->adjusted_mode; +} + /** * drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state * @connector: DRM Connector @@ -656,6 +666,35 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, } EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check); +/** + * drm_atomic_helper_connector_hdmi_is_full_range() - Checks whether a state uses Full-Range RGB + * @connector: the HDMI connector this state refers to + * @state: the HDMI connector state to check + * + * RETURNS: + * True if @state requires a Full range RGB output, False otherwise + */ +bool +drm_atomic_helper_connector_hdmi_is_full_range(const struct drm_connector *connector, + const struct drm_connector_state *state) +{ + const struct drm_display_mode *mode = + connector_state_get_adjusted_mode(state); + const struct drm_display_info *display = &connector->display_info; + + if (state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_FULL) + return true; + + if (state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_LIMITED) + return false; + + if (!display->is_hdmi) + return true; + + return drm_default_rgb_quant_range(mode); +} +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_is_full_range); + /** * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state * @connector: connector object diff --git a/include/drm/drm_atomic_state_helper.h b/include/drm/drm_atomic_state_helper.h index d59d2b3aef9a..c6d941b9e846 100644 --- a/include/drm/drm_atomic_state_helper.h +++ b/include/drm/drm_atomic_state_helper.h @@ -88,6 +88,11 @@ void __drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state); void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, struct drm_connector_state *state); + +bool +drm_atomic_helper_connector_hdmi_is_full_range(const struct drm_connector *connector, + const struct drm_connector_state *state); + void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj, struct drm_private_state *state);