From patchwork Fri Dec 1 06:05:46 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Jernej_=C5=A0krabec?= X-Patchwork-Id: 10086477 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A58A56035E for ; Fri, 1 Dec 2017 08:20:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9112C2A51F for ; Fri, 1 Dec 2017 08:20:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 85F4B2A522; Fri, 1 Dec 2017 08:20:51 +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=-4.2 required=2.0 tests=BAYES_00, 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 243D82A51F for ; Fri, 1 Dec 2017 08:20:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 901736EC17; Fri, 1 Dec 2017 08:20:41 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.siol.net (mailoutvs3.siol.net [213.250.19.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1860B6EBEC for ; Fri, 1 Dec 2017 06:07:09 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTP id BE9A6520829; Fri, 1 Dec 2017 07:07:07 +0100 (CET) X-Virus-Scanned: amavisd-new at psrvmta09.zcs-production.pri Received: from mail.siol.net ([127.0.0.1]) by localhost (psrvmta09.zcs-production.pri [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id wKyw6x5Vr_P8; Fri, 1 Dec 2017 07:07:07 +0100 (CET) Received: from mail.siol.net (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTPS id 08A32520802; Fri, 1 Dec 2017 07:07:07 +0100 (CET) Received: from localhost.localdomain (cpe-86-58-68-135.ftth.triera.net [86.58.68.135]) (Authenticated sender: 031275009) by mail.siol.net (Postfix) with ESMTPSA id AB06452086C; Fri, 1 Dec 2017 07:07:04 +0100 (CET) From: Jernej Skrabec To: maxime.ripard@free-electrons.com Subject: [PATCH v2 23/27] drm/sun4i: Add DE2 CSC library Date: Fri, 1 Dec 2017 07:05:46 +0100 Message-Id: <20171201060550.10392-24-jernej.skrabec@siol.net> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20171201060550.10392-1-jernej.skrabec@siol.net> References: <20171201060550.10392-1-jernej.skrabec@siol.net> X-Mailman-Approved-At: Fri, 01 Dec 2017 08:20:40 +0000 Cc: airlied@linux.ie, linux-sunxi@googlegroups.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, wens@csie.org, linux-arm-kernel@lists.infradead.org, icenowy@aosc.io X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP DE2 have many CSC units - channel input CSC, channel output CSC and mixer output CSC and maybe more. Fortunately, they have all same register layout, only base offsets differs. Add support only for channel output CSC for now. Signed-off-by: Jernej Skrabec --- drivers/gpu/drm/sun4i/Makefile | 2 +- drivers/gpu/drm/sun4i/sun8i_csc.c | 93 +++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/sun4i/sun8i_csc.h | 36 +++++++++++++++ 3 files changed, 130 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/sun4i/sun8i_csc.c create mode 100644 drivers/gpu/drm/sun4i/sun8i_csc.h diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile index a458ddbf4a8e..82a6ac57fbe3 100644 --- a/drivers/gpu/drm/sun4i/Makefile +++ b/drivers/gpu/drm/sun4i/Makefile @@ -11,7 +11,7 @@ sun4i-drm-hdmi-y += sun4i_hdmi_tmds_clk.o sun8i-mixer-y += sun8i_mixer.o sun8i_ui_layer.o \ sun8i_vi_layer.o sun8i_ui_scaler.o \ - sun8i_vi_scaler.o + sun8i_vi_scaler.o sun8i_csc.o sun4i-tcon-y += sun4i_crtc.o sun4i-tcon-y += sun4i_dotclock.o diff --git a/drivers/gpu/drm/sun4i/sun8i_csc.c b/drivers/gpu/drm/sun4i/sun8i_csc.c new file mode 100644 index 000000000000..b14925b40ccf --- /dev/null +++ b/drivers/gpu/drm/sun4i/sun8i_csc.c @@ -0,0 +1,93 @@ +/* + * Copyright (C) Jernej Skrabec + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + */ + +#include + +#include "sun8i_csc.h" +#include "sun8i_mixer.h" + +static const u32 ccsc_base[2][2] = { + {CCSC00_OFFSET, CCSC01_OFFSET}, + {CCSC10_OFFSET, CCSC11_OFFSET}, +}; + +/* + * Factors are in two's complement format, 10 bits for fractinal part. + * First tree values in each line are multiplication factor and last + * value is constant, which is added at the end. + */ +static const u32 yuv2rgb[] = { + 0x000004A8, 0x00000000, 0x00000662, 0xFFFC845A, + 0x000004A8, 0xFFFFFE6F, 0xFFFFFCBF, 0x00021DF4, + 0x000004A8, 0x00000813, 0x00000000, 0xFFFBAC4A, +}; + +static const u32 yvu2rgb[] = { + 0x000004A8, 0x00000662, 0x00000000, 0xFFFC845A, + 0x000004A8, 0xFFFFFCBF, 0xFFFFFE6F, 0x00021DF4, + 0x000004A8, 0x00000000, 0x00000813, 0xFFFBAC4A, +}; + +static void sun8i_csc_set_coefficients(struct regmap *map, u32 base, + enum sun8i_csc_mode mode) +{ + const u32 *table; + int i, data; + + switch (mode) { + case SUN8I_CSC_MODE_YUV2RGB: + table = yuv2rgb; + break; + case SUN8I_CSC_MODE_YVU2RGB: + table = yvu2rgb; + break; + default: + DRM_WARN("Wrong CSC mode specified.\n"); + return; + } + + for (i = 0; i < 12; i++) { + data = table[i]; + /* For some reason, 0x200 must be added to constant parts */ + if (((i + 1) & 3) == 0) + data += 0x200; + regmap_write(map, SUN8I_CSC_COEFF(base, i), data); + } +} + +static void sun8i_csc_enable(struct regmap *map, u32 base, bool enable) +{ + u32 val; + + if (enable) + val = SUN8I_CSC_CTRL_EN; + else + val = 0; + + regmap_update_bits(map, SUN8I_CSC_CTRL(base), SUN8I_CSC_CTRL_EN, val); +} + +void sun8i_csc_set_ccsc_coefficients(struct sun8i_mixer *mixer, int layer, + enum sun8i_csc_mode mode) +{ + u32 base; + + base = ccsc_base[mixer->cfg->ccsc][layer]; + + sun8i_csc_set_coefficients(mixer->engine.regs, base, mode); +} + +void sun8i_csc_enable_ccsc(struct sun8i_mixer *mixer, int layer, bool enable) +{ + u32 base; + + base = ccsc_base[mixer->cfg->ccsc][layer]; + + sun8i_csc_enable(mixer->engine.regs, base, enable); +} diff --git a/drivers/gpu/drm/sun4i/sun8i_csc.h b/drivers/gpu/drm/sun4i/sun8i_csc.h new file mode 100644 index 000000000000..880e8fbb0855 --- /dev/null +++ b/drivers/gpu/drm/sun4i/sun8i_csc.h @@ -0,0 +1,36 @@ +/* + * Copyright (C) Jernej Skrabec + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + */ + +#ifndef _SUN8I_CSC_H_ +#define _SUN8I_CSC_H_ + +struct sun8i_mixer; + +/* VI channel CSC units offsets */ +#define CCSC00_OFFSET 0xAA050 +#define CCSC01_OFFSET 0xFA000 +#define CCSC10_OFFSET 0xA0000 +#define CCSC11_OFFSET 0xF0000 + +#define SUN8I_CSC_CTRL(base) (base + 0x0) +#define SUN8I_CSC_COEFF(base, i) (base + 0x10 + 4 * i) + +#define SUN8I_CSC_CTRL_EN BIT(0) + +enum sun8i_csc_mode { + SUN8I_CSC_MODE_OFF, + SUN8I_CSC_MODE_YUV2RGB, + SUN8I_CSC_MODE_YVU2RGB, +}; + +void sun8i_csc_set_ccsc_coefficients(struct sun8i_mixer *mixer, int layer, + enum sun8i_csc_mode mode); +void sun8i_csc_enable_ccsc(struct sun8i_mixer *mixer, int layer, bool enable); + +#endif