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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3583CC43612 for ; Fri, 18 Jan 2019 14:53:29 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 08BA320883 for ; Fri, 18 Jan 2019 14:53:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Iw7+qtqe" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 08BA320883 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=JmnfcmTxD7AYud3+gaS+m3WRglQrN+Nc5gbcA7hQU80=; b=Iw7+qtqe4Z80Kt W8RbnF1el/abNNl8Ig5qoeJF2Ev1sT5I4Ob7L1e6YfSetckgL+mLPKr/SAeQXkHTF/Rsg7iohnUXq YquWh5XwmZV6y5tU4TE+/q9b0FiGNOsWnpzvGX8lCOW9DvJQUwUv8VszUv8j6mQNeIwHinxtXISnf I/5JrmIbsv5RHBL9ap+qRIZvHweXNdX97ydVVT1CeIzxoJ7jk61tF/1qXIgRXz12zBnSM9IhfMeS8 sCfR0h9ri4ti5ITxQsQ0saNonbaqtiA40jyaDVeR8AVQjOWY6BzU6lOot1aKYWMqETyHGPKhhy/YN 2lMQpMWGYQn77ejI31ng==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gkVWO-0008Sg-1c; Fri, 18 Jan 2019 14:53:24 +0000 Received: from mail.bootlin.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gkVUs-0006y1-Ss for linux-arm-kernel@lists.infradead.org; Fri, 18 Jan 2019 14:52:15 +0000 Received: by mail.bootlin.com (Postfix, from userid 110) id B617C20A9B; Fri, 18 Jan 2019 15:51:42 +0100 (CET) Received: from localhost.localdomain (aaubervilliers-681-1-37-87.w90-88.abo.wanadoo.fr [90.88.156.87]) by mail.bootlin.com (Postfix) with ESMTPSA id 64AD620A9B; Fri, 18 Jan 2019 15:51:42 +0100 (CET) From: Paul Kocialkowski To: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com Subject: [PATCH RESEND v5 06/23] drm/sun4i: Move the BT.601 CSC coefficients to the frontend Date: Fri, 18 Jan 2019 15:51:16 +0100 Message-Id: <20190118145133.21281-7-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190118145133.21281-1-paul.kocialkowski@bootlin.com> References: <20190118145133.21281-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190118_065151_920589_41F83033 X-CRM114-Status: GOOD ( 14.94 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Petazzoni , Maxime Ripard , Maarten Lankhorst , Paul Kocialkowski , David Airlie , Chen-Yu Tsai , Daniel Vetter , Sean Paul Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Both the backend and the frontend need the BT.601 CSC coefficients for YUV to RGB conversion. Since the backend has a dependency on the frontend (and not the other way round), move the coefficients there so that both can access them without having to duplicate them. Signed-off-by: Paul Kocialkowski Acked-by: Maxime Ripard --- drivers/gpu/drm/sun4i/sun4i_backend.c | 22 ---------------------- drivers/gpu/drm/sun4i/sun4i_frontend.c | 23 +++++++++++++++++++++++ drivers/gpu/drm/sun4i/sun4i_frontend.h | 1 + 3 files changed, 24 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c index bbadc2ab9f4d..892197f52557 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.c +++ b/drivers/gpu/drm/sun4i/sun4i_backend.c @@ -45,28 +45,6 @@ static const u32 sunxi_rgb2yuv_coef[12] = { 0x000001c1, 0x00003e88, 0x00003fb8, 0x00000808 }; -/* - * These coefficients are taken from the A33 BSP from Allwinner. - * - * The first three values of each row are coded as 13-bit signed fixed-point - * numbers, with 10 bits for the fractional part. The fourth value is a - * constant coded as a 14-bit signed fixed-point number with 4 bits for the - * fractional part. - * - * The values in table order give the following colorspace translation: - * G = 1.164 * Y - 0.391 * U - 0.813 * V + 135 - * R = 1.164 * Y + 1.596 * V - 222 - * B = 1.164 * Y + 2.018 * U + 276 - * - * This seems to be a conversion from Y[16:235] UV[16:240] to RGB[0:255], - * following the BT601 spec. - */ -static const u32 sunxi_bt601_yuv2rgb_coef[12] = { - 0x000004a7, 0x00001e6f, 0x00001cbf, 0x00000877, - 0x000004a7, 0x00000000, 0x00000662, 0x00003211, - 0x000004a7, 0x00000812, 0x00000000, 0x00002eb1, -}; - static void sun4i_backend_apply_color_correction(struct sunxi_engine *engine) { int i; diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c b/drivers/gpu/drm/sun4i/sun4i_frontend.c index 7c7a5ea0cf58..045013efdc57 100644 --- a/drivers/gpu/drm/sun4i/sun4i_frontend.c +++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c @@ -48,6 +48,29 @@ static const u32 sun4i_frontend_horz_coef[64] = { 0x03ff0000, 0x0000fd41, 0x01ff0000, 0x0000fe42, }; +/* + * These coefficients are taken from the A33 BSP from Allwinner. + * + * The first three values of each row are coded as 13-bit signed fixed-point + * numbers, with 10 bits for the fractional part. The fourth value is a + * constant coded as a 14-bit signed fixed-point number with 4 bits for the + * fractional part. + * + * The values in table order give the following colorspace translation: + * G = 1.164 * Y - 0.391 * U - 0.813 * V + 135 + * R = 1.164 * Y + 1.596 * V - 222 + * B = 1.164 * Y + 2.018 * U + 276 + * + * This seems to be a conversion from Y[16:235] UV[16:240] to RGB[0:255], + * following the BT601 spec. + */ +const u32 sunxi_bt601_yuv2rgb_coef[12] = { + 0x000004a7, 0x00001e6f, 0x00001cbf, 0x00000877, + 0x000004a7, 0x00000000, 0x00000662, 0x00003211, + 0x000004a7, 0x00000812, 0x00000000, 0x00002eb1, +}; +EXPORT_SYMBOL(sunxi_bt601_yuv2rgb_coef); + static void sun4i_frontend_scaler_init(struct sun4i_frontend *frontend) { int i; diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.h b/drivers/gpu/drm/sun4i/sun4i_frontend.h index ad146e8d8d70..3df2bd8a7a95 100644 --- a/drivers/gpu/drm/sun4i/sun4i_frontend.h +++ b/drivers/gpu/drm/sun4i/sun4i_frontend.h @@ -86,6 +86,7 @@ struct sun4i_frontend { }; extern const struct of_device_id sun4i_frontend_of_table[]; +extern const u32 sunxi_bt601_yuv2rgb_coef[12]; int sun4i_frontend_init(struct sun4i_frontend *frontend); void sun4i_frontend_exit(struct sun4i_frontend *frontend); -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel