From patchwork Tue Oct 24 13:00:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?U2hhd24gU3VuZyAo5a6L5a2d6KyZKQ==?= X-Patchwork-Id: 13434385 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 835B5C07545 for ; Tue, 24 Oct 2023 13:02:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D27C110E3AE; Tue, 24 Oct 2023 13:02:14 +0000 (UTC) Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by gabe.freedesktop.org (Postfix) with ESMTPS id 09BAA10E397 for ; Tue, 24 Oct 2023 13:01:03 +0000 (UTC) X-UUID: 5f0e3510726d11eea33bb35ae8d461a2-20231024 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=GRyBqqTlazJ7bFgQXvbi5AgZ05S2kdqOYfdzuieKjqg=; b=cgLYtYGNFwOfQSfUNNW0Oic1cxR2PxSrPh5MMWRhD5rWsqiy+FBOXuNIgPHvqIUbBekj13frdOrfevJ3v5Jsq1ViGrI5atfb0fDw3fldWbIpJVAZJYO+zDzrL30sNqcWi/Zr0bI52zgCmAVGn+yJ6VBu21hSl6fzPJ2YnV3nlc4=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.32, REQID:2ba0548c-bcb7-4a6b-9b76-eabf573df9ef, IP:0, U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:5f78ec9, CLOUDID:16dab6fb-4a48-46e2-b946-12f04f20af8c, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR: NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULN X-UUID: 5f0e3510726d11eea33bb35ae8d461a2-20231024 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 199668920; Tue, 24 Oct 2023 21:00:56 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Tue, 24 Oct 2023 21:00:55 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Tue, 24 Oct 2023 21:00:55 +0800 From: Hsiao Chien Sung To: AngeloGioacchino Del Regno , CK Hu , Krzysztof Kozlowski , Matthias Brugger , Rob Herring Subject: [PATCH v11 18/23] drm/mediatek: Support MT8188 Padding in display driver Date: Tue, 24 Oct 2023 21:00:43 +0800 Message-ID: <20231024130048.14749-19-shawn.sung@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20231024130048.14749-1-shawn.sung@mediatek.com> References: <20231024130048.14749-1-shawn.sung@mediatek.com> MIME-Version: 1.0 X-MTK: N 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: Nathan Lu , Chun-Kuang Hu , Moudy Ho , Fei Shao , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Johnson Wang , "Nancy . Lin" , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, "Jason-JH . Lin" , Hsiao Chien Sung , Sean Paul , devicetree@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Padding is a new display module on MT8188, it provides ability to add pixels to width and height of a layer with specified colors. Due to hardware design, Mixer in VDOSYS1 requires width of a layer to be 2-pixel-align, or 4-pixel-align when ETHDR is enabled, we need Padding to deal with odd width. Reviewed-by: CK Hu Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Hsiao Chien Sung --- drivers/gpu/drm/mediatek/Makefile | 3 +- drivers/gpu/drm/mediatek/mtk_disp_drv.h | 4 + drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 + drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 +- drivers/gpu/drm/mediatek/mtk_padding.c | 160 ++++++++++++++++++++++++ 5 files changed, 168 insertions(+), 2 deletions(-) create mode 100644 drivers/gpu/drm/mediatek/mtk_padding.c diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile index d4d193f60271..5e4436403b8d 100644 --- a/drivers/gpu/drm/mediatek/Makefile +++ b/drivers/gpu/drm/mediatek/Makefile @@ -16,7 +16,8 @@ mediatek-drm-y := mtk_disp_aal.o \ mtk_dsi.o \ mtk_dpi.o \ mtk_ethdr.o \ - mtk_mdp_rdma.o + mtk_mdp_rdma.o \ + mtk_padding.o obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h index 8465beeab435..c44f5b31bab5 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h @@ -163,4 +163,8 @@ void mtk_mdp_rdma_config(struct device *dev, struct mtk_mdp_rdma_cfg *cfg, const u32 *mtk_mdp_rdma_get_formats(struct device *dev); size_t mtk_mdp_rdma_get_num_formats(struct device *dev); +int mtk_padding_clk_enable(struct device *dev); +void mtk_padding_clk_disable(struct device *dev); +void mtk_padding_start(struct device *dev); +void mtk_padding_stop(struct device *dev); #endif diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index cdce165c092e..62e6e9785443 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -1025,6 +1025,7 @@ static struct platform_driver * const mtk_drm_drivers[] = { &mtk_dsi_driver, &mtk_ethdr_driver, &mtk_mdp_rdma_driver, + &mtk_padding_driver, }; static int __init mtk_drm_init(void) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h index 8dca68ea1b94..d2efd715699f 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h @@ -72,5 +72,5 @@ extern struct platform_driver mtk_dpi_driver; extern struct platform_driver mtk_dsi_driver; extern struct platform_driver mtk_ethdr_driver; extern struct platform_driver mtk_mdp_rdma_driver; - +extern struct platform_driver mtk_padding_driver; #endif /* MTK_DRM_DRV_H */ diff --git a/drivers/gpu/drm/mediatek/mtk_padding.c b/drivers/gpu/drm/mediatek/mtk_padding.c new file mode 100644 index 000000000000..0d6451c149b6 --- /dev/null +++ b/drivers/gpu/drm/mediatek/mtk_padding.c @@ -0,0 +1,160 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023 MediaTek Inc. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "mtk_disp_drv.h" +#include "mtk_drm_crtc.h" +#include "mtk_drm_ddp_comp.h" + +#define PADDING_CONTROL_REG 0x00 +#define PADDING_BYPASS BIT(0) +#define PADDING_ENABLE BIT(1) +#define PADDING_PIC_SIZE_REG 0x04 +#define PADDING_H_REG 0x08 /* horizontal */ +#define PADDING_V_REG 0x0c /* vertical */ +#define PADDING_COLOR_REG 0x10 + +/** + * struct mtk_padding - Basic information of the Padding + * @clk: Clock of the module + * @reg: Virtual address of the Padding for CPU to access + * @cmdq_reg: CMDQ setting of the Padding + * + * Every Padding should have different clock source, register base, and + * CMDQ settings, we stored these differences all together. + */ +struct mtk_padding { + struct clk *clk; + void __iomem *reg; + struct cmdq_client_reg cmdq_reg; +}; + +int mtk_padding_clk_enable(struct device *dev) +{ + struct mtk_padding *padding = dev_get_drvdata(dev); + + return clk_prepare_enable(padding->clk); +} + +void mtk_padding_clk_disable(struct device *dev) +{ + struct mtk_padding *padding = dev_get_drvdata(dev); + + clk_disable_unprepare(padding->clk); +} + +void mtk_padding_start(struct device *dev) +{ + struct mtk_padding *padding = dev_get_drvdata(dev); + + writel(PADDING_ENABLE | PADDING_BYPASS, + padding->reg + PADDING_CONTROL_REG); + + /* + * Notice that even the padding is in bypass mode, + * all the settings must be cleared to 0 or + * undefined behaviors could happen + */ + writel(0, padding->reg + PADDING_PIC_SIZE_REG); + writel(0, padding->reg + PADDING_H_REG); + writel(0, padding->reg + PADDING_V_REG); + writel(0, padding->reg + PADDING_COLOR_REG); +} + +void mtk_padding_stop(struct device *dev) +{ + struct mtk_padding *padding = dev_get_drvdata(dev); + + writel(0, padding->reg + PADDING_CONTROL_REG); +} + +static int mtk_padding_bind(struct device *dev, struct device *master, void *data) +{ + return 0; +} + +static void mtk_padding_unbind(struct device *dev, struct device *master, void *data) +{ +} + +static const struct component_ops mtk_padding_component_ops = { + .bind = mtk_padding_bind, + .unbind = mtk_padding_unbind, +}; + +static int mtk_padding_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mtk_padding *priv; + struct resource *res; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->clk)) { + dev_err(dev, "failed to get clk\n"); + return PTR_ERR(priv->clk); + } + + priv->reg = devm_platform_get_and_ioremap_resource(pdev, 0, &res); + if (IS_ERR(priv->reg)) { + dev_err(dev, "failed to do ioremap\n"); + return PTR_ERR(priv->reg); + } + +#if IS_REACHABLE(CONFIG_MTK_CMDQ) + ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0); + if (ret) { + dev_err(dev, "failed to get gce client reg\n"); + return ret; + } +#endif + + platform_set_drvdata(pdev, priv); + + ret = devm_pm_runtime_enable(dev); + if (ret) + return ret; + + ret = component_add(dev, &mtk_padding_component_ops); + if (ret) { + pm_runtime_disable(dev); + return dev_err_probe(dev, ret, "failed to add component\n"); + } + + return 0; +} + +static int mtk_padding_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &mtk_padding_component_ops); + return 0; +} + +static const struct of_device_id mtk_padding_driver_dt_match[] = { + { .compatible = "mediatek,mt8188-disp-padding" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mtk_padding_driver_dt_match); + +struct platform_driver mtk_padding_driver = { + .probe = mtk_padding_probe, + .remove = mtk_padding_remove, + .driver = { + .name = "mediatek-disp-padding", + .owner = THIS_MODULE, + .of_match_table = mtk_padding_driver_dt_match, + }, +};