From mboxrd@z Thu Jan 1 00:00:00 1970 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 00BCBC433F5 for ; Thu, 20 Jan 2022 15:17:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2D47410E439; Thu, 20 Jan 2022 15:17:08 +0000 (UTC) Received: from wnew3-smtp.messagingengine.com (wnew3-smtp.messagingengine.com [64.147.123.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0BF6C10E47C for ; Thu, 20 Jan 2022 15:17:07 +0000 (UTC) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailnew.west.internal (Postfix) with ESMTP id A71E82B00155; Thu, 20 Jan 2022 10:17:05 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute5.internal (MEProxy); Thu, 20 Jan 2022 10:17:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cerno.tech; h=cc :cc:content-transfer-encoding:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm1; bh=ftFxgd+iRfBbU1N05P7hPMsIOCRbCD IKb5HI/p5Zxyw=; b=K1SEYFEVIuner7HWRgmYPTKGQNM8ZYyOscmJ7wSMz4l9ty qdI+WA1/NVNpgiuxGdgzjIVIGtpG9wHGUveG822HWO135xCZlJP2mMPIAwbW2uRD Ud9zVRedQcG4B+6oMcxUm3tHTQle6rI6HbMVTq1+VWt+by5wDmjdAmFKKM+cYhYs uEMxw8VCJ5pZwOw1gaj/vPmL/EY30er+n71kcaaLx/2pEzRUCkaSHRyQm/LanHiW JCt9+EryvY0I3NhkvJO0U1AUI6JqQ9DVv5SvThVmmuuLROdaeDN47E1o+YFD89ir Prt2Hh/jOvuVjWXYsw66k95oX4czHq8zhZ3c31uw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding:date:date :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=ftFxgd +iRfBbU1N05P7hPMsIOCRbCDIKb5HI/p5Zxyw=; b=dAbtOWGsLyeilhl8xMWdH/ mdDmxo2CWuHGAhR66fNJZ8BJfooTutr0MkbhwtukPyBjJZy8yw8M+wSsFWt8DAZO rlAvwZpLqc+VYfSgubkoPJNdevi8vMET1ZoBYYeLtD78MS+FIbdzCT47NZbXP6kZ 3QPQGVNRk4rdoNh4zcb6T4GeQECF2deKOVpUz3T5x1GKw/WPHRdYsPN6wSfukFcq ENESdPsg/XYidULGqhaAAsxPLoKQ94HIslVWWMs+9kO4nv63pTxFXUJvE9nTMq8M vk0oj9nBTT5Elt1XlP3R4N+6nAvdGSaO0Bii5arprCxiSWBts0omC3w0zNzOjQGg == X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvvddrudekgdejvdcutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhvffufffkofgjfhgggfestdekredtredttdenucfhrhhomhepofgrgihimhgv ucftihhprghrugcuoehmrgigihhmvgestggvrhhnohdrthgvtghhqeenucggtffrrghtth gvrhhnpedvkeelveefffekjefhffeuleetleefudeifeehuddugffghffhffehveevheeh vdenucevlhhushhtvghrufhiiigvpedunecurfgrrhgrmhepmhgrihhlfhhrohhmpehmrg igihhmvgestggvrhhnohdrthgvtghh X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 20 Jan 2022 10:17:04 -0500 (EST) From: Maxime Ripard To: Maarten Lankhorst , Thomas Zimmermann , Maxime Ripard , Daniel Vetter , David Airlie Subject: [PATCH v4 09/16] drm/vc4: hdmi: Define colorspace matrices Date: Thu, 20 Jan 2022 16:16:18 +0100 Message-Id: <20220120151625.594595-10-maxime@cerno.tech> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220120151625.594595-1-maxime@cerno.tech> References: <20220120151625.594595-1-maxime@cerno.tech> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: Dom Cobley , Tim Gover , Dave Stevenson , dri-devel@lists.freedesktop.org, Werner Sembach , Phil Elwell Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The current CSC setup code for the BCM2711 uses a sequence of register writes to configure the CSC depending on whether we output using a full or limited range. However, with the upcoming introduction of the YUV output, we're going to add new matrices to perform the conversions, so we should switch to something a bit more flexible that takes the matrix as an argument and programs the CSC accordingly. Acked-by: Thomas Zimmermann Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_hdmi.c | 79 +++++++++++++++++++++------------- 1 file changed, 50 insertions(+), 29 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 682c3c907cbe..7fdb49e790f3 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -775,6 +775,52 @@ static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); } + +/* + * If we need to output Full Range RGB, then use the unity matrix + * + * [ 1 0 0 0] + * [ 0 1 0 0] + * [ 0 0 1 0] + * + * Matrix is signed 2p13 fixed point, with signed 9p6 offsets + */ +static const u16 vc5_hdmi_csc_full_rgb_unity[3][4] = { + { 0x2000, 0x0000, 0x0000, 0x0000 }, + { 0x0000, 0x2000, 0x0000, 0x0000 }, + { 0x0000, 0x0000, 0x2000, 0x0000 }, +}; + +/* + * CEA VICs other than #1 require limited range RGB output unless + * overridden by an AVI infoframe. Apply a colorspace conversion to + * squash 0-255 down to 16-235. The matrix here is: + * + * [ 0.8594 0 0 16] + * [ 0 0.8594 0 16] + * [ 0 0 0.8594 16] + * + * Matrix is signed 2p13 fixed point, with signed 9p6 offsets + */ +static const u16 vc5_hdmi_csc_full_rgb_to_limited_rgb[3][4] = { + { 0x1b80, 0x0000, 0x0000, 0x0400 }, + { 0x0000, 0x1b80, 0x0000, 0x0400 }, + { 0x0000, 0x0000, 0x1b80, 0x0400 }, +}; + +static void vc5_hdmi_set_csc_coeffs(struct vc4_hdmi *vc4_hdmi, + const u16 coeffs[3][4]) +{ + lockdep_assert_held(&vc4_hdmi->hw_lock); + + HDMI_WRITE(HDMI_CSC_12_11, (coeffs[0][1] << 16) | coeffs[0][0]); + HDMI_WRITE(HDMI_CSC_14_13, (coeffs[0][3] << 16) | coeffs[0][2]); + HDMI_WRITE(HDMI_CSC_22_21, (coeffs[1][1] << 16) | coeffs[1][0]); + HDMI_WRITE(HDMI_CSC_24_23, (coeffs[1][3] << 16) | coeffs[1][2]); + HDMI_WRITE(HDMI_CSC_32_31, (coeffs[2][1] << 16) | coeffs[2][0]); + HDMI_WRITE(HDMI_CSC_34_33, (coeffs[2][3] << 16) | coeffs[2][2]); +} + static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, const struct drm_display_mode *mode) { @@ -786,35 +832,10 @@ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, 0x354021); - if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) { - /* CEA VICs other than #1 requre limited range RGB - * output unless overridden by an AVI infoframe. - * Apply a colorspace conversion to squash 0-255 down - * to 16-235. The matrix here is: - * - * [ 0.8594 0 0 16] - * [ 0 0.8594 0 16] - * [ 0 0 0.8594 16] - * [ 0 0 0 1] - * Matrix is signed 2p13 fixed point, with signed 9p6 offsets - */ - HDMI_WRITE(HDMI_CSC_12_11, (0x0000 << 16) | 0x1b80); - HDMI_WRITE(HDMI_CSC_14_13, (0x0400 << 16) | 0x0000); - HDMI_WRITE(HDMI_CSC_22_21, (0x1b80 << 16) | 0x0000); - HDMI_WRITE(HDMI_CSC_24_23, (0x0400 << 16) | 0x0000); - HDMI_WRITE(HDMI_CSC_32_31, (0x0000 << 16) | 0x0000); - HDMI_WRITE(HDMI_CSC_34_33, (0x0400 << 16) | 0x1b80); - } else { - /* Still use the matrix for full range, but make it unity. - * Matrix is signed 2p13 fixed point, with signed 9p6 offsets - */ - HDMI_WRITE(HDMI_CSC_12_11, (0x0000 << 16) | 0x2000); - HDMI_WRITE(HDMI_CSC_14_13, (0x0000 << 16) | 0x0000); - HDMI_WRITE(HDMI_CSC_22_21, (0x2000 << 16) | 0x0000); - HDMI_WRITE(HDMI_CSC_24_23, (0x0000 << 16) | 0x0000); - HDMI_WRITE(HDMI_CSC_32_31, (0x0000 << 16) | 0x0000); - HDMI_WRITE(HDMI_CSC_34_33, (0x0000 << 16) | 0x2000); - } + if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) + vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_rgb); + else + vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_unity); HDMI_WRITE(HDMI_CSC_CTL, csc_ctl); -- 2.34.1