From patchwork Mon Feb 12 13:13:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 13553174 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E9E50535D9; Mon, 12 Feb 2024 13:15:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707743709; cv=none; b=BAuEhTYbPMP/a9TecBKkKiVfsEkXtGCXsfFVldbAy5OC2od7iPwj0j67linHM4Mgnbmc7mxU8NYxMXLDWBX5y4KPK9Hs4dQSZQSlc9AV4Vw1TFOeH133NN+LCGdaPBZRfV7Iom5dhV7A6zxawY+2WUVckn7T5Rl7MqDf3aSMdvQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707743709; c=relaxed/simple; bh=l7az7PI3sr6iJExwxQ3T/NzoIC1/E5ZG/ch/JDJ1A3s=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=HyC7rNCM6S0KBeVw4LS/sXW0DfWbsgjSSorzmSuKk2cmjzeJ+ISUXU6cdSp0xDSOwJdkyAUHck1IrjwgIcClYACqEpKcPy6r9iTVL25ulm+v9bIkv9OVh8dG/4si0ZWJSGVWi3lYXkYfvvT6dycm1UG6uQVQdoEY7lR0ixcbgwg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=N8O/NQn0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="N8O/NQn0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F303CC433F1; Mon, 12 Feb 2024 13:15:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707743708; bh=l7az7PI3sr6iJExwxQ3T/NzoIC1/E5ZG/ch/JDJ1A3s=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=N8O/NQn02I4O+8iu2op4Zm2Eq6Jx+InYbm/1d+l0itl4L7iu3VhBYcjiFdvQCokqI ceV8oVw6+ukjKLL1KSdpzbzlNPrsXuJsjED7SbBnDl5D9lJqBCut7QcQ9IVfNPF/lN Nh8RuN1RpZzyW5L9pJTnfz6A+phgy8rn2OPvX5X21+aDKMROxN2zU9hHJpRBKXvUAh eY43ADmTm9U19SShlfe5ZqoF5Mjv/fio7u+1n3LykA+Q8OD2WLsOIrRU00Unv1UvGt TbTaSTETGh363AR+B0KQGbTA6YLsHRrfshogutc/uciBk1RSGQhydAiIQ839yp6axH vJp7bq/G63Icw== From: Maxime Ripard Date: Mon, 12 Feb 2024 14:13:18 +0100 Subject: [PATCH v6 35/36] drm/sun4i: hdmi: Consolidate atomic_check and mode_valid Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240212-kms-hdmi-connector-state-v6-35-f4bcdc979e6f@kernel.org> References: <20240212-kms-hdmi-connector-state-v6-0-f4bcdc979e6f@kernel.org> In-Reply-To: <20240212-kms-hdmi-connector-state-v6-0-f4bcdc979e6f@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 Cc: Hans Verkuil , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev, Maxime Ripard , Sui Jingfeng X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=4307; i=mripard@kernel.org; h=from:subject:message-id; bh=l7az7PI3sr6iJExwxQ3T/NzoIC1/E5ZG/ch/JDJ1A3s=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDKmnJEvmCJ7ZZFW76My7xJjZkz+f26+z8/LBCT4P6gz2f v35/sSXCR2lLAxiXAyyYoosMcLmS+JOzXrdycY3D2YOKxPIEAYuTgGYiPsmhr/Sr2fMXqlte4TB RG5H+/Yr17ep7TyddaxG47NP+/G5E6f/ZGRYyZ3ZO/dL8PaO9S4VRlc6hOZpebVZ6uZ2LdGOE3o ks58fAA== X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D atomic_check and mode_valid do not check for the same things which can lead to surprising result if the userspace commits a mode that didn't go through mode_valid. Let's merge the two implementations into a function called by both. Acked-by: Sui Jingfeng Signed-off-by: Maxime Ripard --- drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 74 +++++++++++++++++++++------------- 1 file changed, 47 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c index c276d984da6b..b7cf369b1906 100644 --- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c +++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c @@ -62,18 +62,6 @@ static int sun4i_hdmi_setup_avi_infoframes(struct sun4i_hdmi *hdmi, return 0; } -static int sun4i_hdmi_atomic_check(struct drm_encoder *encoder, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state) -{ - struct drm_display_mode *mode = &crtc_state->mode; - - if (mode->flags & DRM_MODE_FLAG_DBLCLK) - return -EINVAL; - - return 0; -} - static void sun4i_hdmi_disable(struct drm_encoder *encoder, struct drm_atomic_state *state) { @@ -166,31 +154,61 @@ static void sun4i_hdmi_enable(struct drm_encoder *encoder, writel(val, hdmi->base + SUN4I_HDMI_VID_CTRL_REG); } -static enum drm_mode_status sun4i_hdmi_mode_valid(struct drm_encoder *encoder, - const struct drm_display_mode *mode) +static const struct drm_encoder_helper_funcs sun4i_hdmi_helper_funcs = { + .atomic_disable = sun4i_hdmi_disable, + .atomic_enable = sun4i_hdmi_enable, +}; + +static enum drm_mode_status +sun4i_hdmi_connector_clock_valid(const struct drm_connector *connector, + const struct drm_display_mode *mode, + unsigned long long clock) { - struct sun4i_hdmi *hdmi = drm_encoder_to_sun4i_hdmi(encoder); - unsigned long rate = mode->clock * 1000; - unsigned long diff = rate / 200; /* +-0.5% allowed by HDMI spec */ + const struct sun4i_hdmi *hdmi = drm_connector_to_sun4i_hdmi(connector); + unsigned long diff = clock / 200; /* +-0.5% allowed by HDMI spec */ long rounded_rate; + if (mode->flags & DRM_MODE_FLAG_DBLCLK) + return MODE_BAD; + /* 165 MHz is the typical max pixelclock frequency for HDMI <= 1.2 */ - if (rate > 165000000) + if (clock > 165000000) return MODE_CLOCK_HIGH; - rounded_rate = clk_round_rate(hdmi->tmds_clk, rate); + + rounded_rate = clk_round_rate(hdmi->tmds_clk, clock); if (rounded_rate > 0 && - max_t(unsigned long, rounded_rate, rate) - - min_t(unsigned long, rounded_rate, rate) < diff) + max_t(unsigned long, rounded_rate, clock) - + min_t(unsigned long, rounded_rate, clock) < diff) return MODE_OK; + return MODE_NOCLOCK; } -static const struct drm_encoder_helper_funcs sun4i_hdmi_helper_funcs = { - .atomic_check = sun4i_hdmi_atomic_check, - .atomic_disable = sun4i_hdmi_disable, - .atomic_enable = sun4i_hdmi_enable, - .mode_valid = sun4i_hdmi_mode_valid, -}; +static int sun4i_hdmi_connector_atomic_check(struct drm_connector *connector, + struct drm_atomic_state *state) +{ + struct drm_connector_state *conn_state = + drm_atomic_get_new_connector_state(state, connector); + struct drm_crtc *crtc = conn_state->crtc; + struct drm_crtc_state *crtc_state = crtc->state; + struct drm_display_mode *mode = &crtc_state->adjusted_mode; + enum drm_mode_status status; + + status = sun4i_hdmi_connector_clock_valid(connector, mode, + mode->clock * 1000); + if (status != MODE_OK) + return -EINVAL; + + return 0; +} + +static enum drm_mode_status +sun4i_hdmi_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + return sun4i_hdmi_connector_clock_valid(connector, mode, + mode->clock * 1000); +} static int sun4i_hdmi_get_modes(struct drm_connector *connector) { @@ -236,6 +254,8 @@ static struct i2c_adapter *sun4i_hdmi_get_ddc(struct device *dev) } static const struct drm_connector_helper_funcs sun4i_hdmi_connector_helper_funcs = { + .atomic_check = sun4i_hdmi_connector_atomic_check, + .mode_valid = sun4i_hdmi_connector_mode_valid, .get_modes = sun4i_hdmi_get_modes, };