From patchwork Fri Jan 18 14:43:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 10770429 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 26D471390 for ; Fri, 18 Jan 2019 14:44:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 15BF92863B for ; Fri, 18 Jan 2019 14:44:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0A1CE29966; Fri, 18 Jan 2019 14:44:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A949D2863B for ; Fri, 18 Jan 2019 14:44:41 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D91306F7E8; Fri, 18 Jan 2019 14:44:36 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.bootlin.com (mail.bootlin.com [62.4.15.54]) by gabe.freedesktop.org (Postfix) with ESMTP id 4F4D56E054 for ; Fri, 18 Jan 2019 14:43:53 +0000 (UTC) Received: by mail.bootlin.com (Postfix, from userid 110) id 06F9120DCD; Fri, 18 Jan 2019 15:43:52 +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 518FC20A9B; Fri, 18 Jan 2019 15:43:50 +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 v5 07/23] drm/sun4i: frontend: Configure and enable YUV to RGB CSC when needed Date: Fri, 18 Jan 2019 15:43:12 +0100 Message-Id: <20190118144328.20649-8-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190118144328.20649-1-paul.kocialkowski@bootlin.com> References: <20190118144328.20649-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Petazzoni , Maxime Ripard , Paul Kocialkowski , David Airlie , Chen-Yu Tsai , Sean Paul Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP In prevision of adding support for YUV formats, set the YUV to RGB colorspace conversion coefficients if required and don't bypass the CSC engine when converting. The BT601 coefficients from the A33 BSP are copied over from the backend code. Because of module inter-dependency, we can't have the frontend use these coefficients from the backend directly. Signed-off-by: Paul Kocialkowski --- drivers/gpu/drm/sun4i/sun4i_frontend.c | 23 +++++++++++++++++++++-- drivers/gpu/drm/sun4i/sun4i_frontend.h | 2 ++ 2 files changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c b/drivers/gpu/drm/sun4i/sun4i_frontend.c index 045013efdc57..bf37a4ea81c5 100644 --- a/drivers/gpu/drm/sun4i/sun4i_frontend.c +++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c @@ -213,6 +213,8 @@ int sun4i_frontend_update_formats(struct sun4i_frontend *frontend, const struct drm_format_info *format = fb->format; u32 out_fmt_val; u32 in_fmt_val, in_mod_val, in_ps_val; + unsigned int i; + u32 bypass; int ret; ret = sun4i_frontend_drm_format_to_input_fmt(format, &in_fmt_val); @@ -250,9 +252,26 @@ int sun4i_frontend_update_formats(struct sun4i_frontend *frontend, regmap_write(frontend->regs, SUN4I_FRONTEND_CH0_VERTPHASE1_REG, 0x400); regmap_write(frontend->regs, SUN4I_FRONTEND_CH1_VERTPHASE1_REG, 0x400); + /* + * Checking the input format is sufficient since we currently only + * support RGB output formats to the backend. If YUV output formats + * ever get supported, an YUV input and output would require bypassing + * the CSC engine too. + */ + if (format->is_yuv) { + /* Setup the CSC engine for YUV to RGB conversion. */ + bypass = 0; + + for (i = 0; i < ARRAY_SIZE(sunxi_bt601_yuv2rgb_coef); i++) + regmap_write(frontend->regs, + SUN4I_FRONTEND_CSC_COEF_REG(i), + sunxi_bt601_yuv2rgb_coef[i]); + } else { + bypass = SUN4I_FRONTEND_BYPASS_CSC_EN; + } + regmap_update_bits(frontend->regs, SUN4I_FRONTEND_BYPASS_REG, - SUN4I_FRONTEND_BYPASS_CSC_EN, - SUN4I_FRONTEND_BYPASS_CSC_EN); + SUN4I_FRONTEND_BYPASS_CSC_EN, bypass); regmap_write(frontend->regs, SUN4I_FRONTEND_INPUT_FMT_REG, in_mod_val | in_fmt_val | in_ps_val); diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.h b/drivers/gpu/drm/sun4i/sun4i_frontend.h index 3df2bd8a7a95..17b46ecf7d9e 100644 --- a/drivers/gpu/drm/sun4i/sun4i_frontend.h +++ b/drivers/gpu/drm/sun4i/sun4i_frontend.h @@ -35,6 +35,8 @@ #define SUN4I_FRONTEND_OUTPUT_FMT_DATA_FMT_BGRX8888 1 #define SUN4I_FRONTEND_OUTPUT_FMT_DATA_FMT_XRGB8888 2 +#define SUN4I_FRONTEND_CSC_COEF_REG(c) (0x070 + (0x4 * (c))) + #define SUN4I_FRONTEND_CH0_INSIZE_REG 0x100 #define SUN4I_FRONTEND_INSIZE(h, w) ((((h) - 1) << 16) | (((w) - 1)))