From nobody Thu Nov 14 05:27:36 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E8F8CDB482 for ; Thu, 19 Oct 2023 05:57:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344723AbjJSF5B (ORCPT ); Thu, 19 Oct 2023 01:57:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232698AbjJSF4g (ORCPT ); Thu, 19 Oct 2023 01:56:36 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C457121; Wed, 18 Oct 2023 22:56:33 -0700 (PDT) X-UUID: 3c3c206a6e4411eea33bb35ae8d461a2-20231019 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=eDUePg+QR1aqlzeMKZhWj8dJGWZMQ/XyHjfGM5wMmCc=; b=bQvp1bEu+ZjH1usuZNLOQ3vvuhZzlEekDS+1Sg5aCjXhmWRF+6EALmrOOfb5tM8NT5y7BqSVkV04Iv/upxScDvx2PXKwEtV6KAVrSfReNbsZGeftM0k4XW7XkXiKuEk/9NAsecN8az7fKxFfURoUEUC0R7zzISs6dK5pRUxz12M=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.32,REQID:2f5e9928-e471-4233-bbff-b82b6565fc70,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:da671cc0-14cc-44ca-b657-2d2783296e72,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: 3c3c206a6e4411eea33bb35ae8d461a2-20231019 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 1437032716; Thu, 19 Oct 2023 13:56:24 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) 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; Thu, 19 Oct 2023 13:56:23 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 19 Oct 2023 13:56:23 +0800 From: Hsiao Chien Sung To: AngeloGioacchino Del Regno , CK Hu , Krzysztof Kozlowski , Matthias Brugger , Rob Herring CC: Chun-Kuang Hu , Philipp Zabel , David Airlie , Daniel Vetter , Fei Shao , Sean Paul , Johnson Wang , "Nancy . Lin" , Moudy Ho , Hsiao Chien Sung , "Jason-JH . Lin" , Nathan Lu , , , , , Subject: [PATCH v10 19/24] drm/mediatek: Support MT8188 Padding in display driver Date: Thu, 19 Oct 2023 13:56:14 +0800 Message-ID: <20231019055619.19358-20-shawn.sung@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20231019055619.19358-1-shawn.sung@mediatek.com> References: <20231019055619.19358-1-shawn.sung@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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/M= akefile index d4d193f60271..5e4436403b8d 100644 --- a/drivers/gpu/drm/mediatek/Makefile +++ b/drivers/gpu/drm/mediatek/Makefile @@ -16,7 +16,8 @@ mediatek-drm-y :=3D mtk_disp_aal.o \ mtk_dsi.o \ mtk_dpi.o \ mtk_ethdr.o \ - mtk_mdp_rdma.o + mtk_mdp_rdma.o \ + mtk_padding.o =20 obj-$(CONFIG_DRM_MEDIATEK) +=3D mediatek-drm.o =20 diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/medi= atek/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); =20 +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/media= tek/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= [] =3D { &mtk_dsi_driver, &mtk_ethdr_driver, &mtk_mdp_rdma_driver, + &mtk_padding_driver, }; =20 static int __init mtk_drm_init(void) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/media= tek/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/media= tek/mtk_padding.c new file mode 100644 index 000000000000..14efb6ab2341 --- /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 =3D dev_get_drvdata(dev); + + return clk_prepare_enable(padding->clk); +} + +void mtk_padding_clk_disable(struct device *dev) +{ + struct mtk_padding *padding =3D dev_get_drvdata(dev); + + clk_disable_unprepare(padding->clk); +} + +void mtk_padding_start(struct device *dev) +{ + struct mtk_padding *padding =3D 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 =3D dev_get_drvdata(dev); + + writel(0, padding->reg + PADDING_CONTROL_REG); +} + +static int mtk_padding_bind(struct device *dev, struct device *master, voi= d *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 =3D { + .bind =3D mtk_padding_bind, + .unbind =3D mtk_padding_unbind, +}; + +static int mtk_padding_probe(struct platform_device *pdev) +{ + struct device *dev =3D &pdev->dev; + struct mtk_padding *priv; + struct resource *res; + int ret; + + priv =3D devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->clk =3D 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 =3D 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 =3D 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 =3D devm_pm_runtime_enable(dev); + if (ret) + return ret; + + ret =3D 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[] =3D { + { .compatible =3D "mediatek,mt8188-padding" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mtk_padding_driver_dt_match); + +struct platform_driver mtk_padding_driver =3D { + .probe =3D mtk_padding_probe, + .remove =3D mtk_padding_remove, + .driver =3D { + .name =3D "mediatek-disp-padding", + .owner =3D THIS_MODULE, + .of_match_table =3D mtk_padding_driver_dt_match, + }, +}; --=20 2.18.0