From patchwork Wed Sep 8 06:03:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SmFzb24tSkggTGluICjmnpfnnb/npaUp?= X-Patchwork-Id: 12480229 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=-17.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, USER_AGENT_GIT autolearn=unavailable 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 431C5C433EF for ; Wed, 8 Sep 2021 06:12:40 +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 118F26113C for ; Wed, 8 Sep 2021 06:12:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 118F26113C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=o8Woo9wAcl9twCwN5Gq26jlBctlGT7LP/Ot2nK4uX6Y=; b=rtcE62JAsSvufi YhO/MqxHfc4cn3OF4d14WflfXzzvlZap+aE+l6ewu7j5dFW6X0srz/eB01pJHvRbbGCKAIhjlOH2u HicUAOI6mHS2rN0lQiCTswZDQpRC93Xg3n2pMtZxMc5TqEHBDQgpXureLzdDs1t7vlJvkqPZtVXJc Llpy7hhtcM9uGw0UmJ0J1gAlP/p6C22x5bsAlqQoUoTjRc5ydi36N94CMLQ3Ujz3aQasftRMKRBjy pWQtxAY0sVD3sP12Z0Maxfk3M/y042/xdsUiZadoopgIRVZ2cSb+Bwhoq5fJy/g/MZApKqhZTdu7m f+29wD34wENihBvI6qnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mNqmx-005U8L-Sc; Wed, 08 Sep 2021 06:10:28 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mNqlb-005TSI-TS; Wed, 08 Sep 2021 06:09:06 +0000 X-UUID: 7c02d96529d64e019a429bc4586f4642-20210907 X-UUID: 7c02d96529d64e019a429bc4586f4642-20210907 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1965360097; Tue, 07 Sep 2021 23:08:46 -0700 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 7 Sep 2021 23:04:19 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 8 Sep 2021 14:04:18 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 8 Sep 2021 14:04:18 +0800 From: jason-jh.lin To: Rob Herring , Matthias Brugger , Chun-Kuang Hu , "Philipp Zabel" CC: Enric Balletbo i Serra , Maxime Coquelin , David Airlie , Daniel Vetter , Alexandre Torgue , , , , Yongqiang Niu , , , , , , , , Subject: [PATCH v10 16/17] drm/mediatek: add MERGE support for mediatek-drm Date: Wed, 8 Sep 2021 14:03:11 +0800 Message-ID: <20210908060312.24007-17-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210908060312.24007-1-jason-jh.lin@mediatek.com> References: <20210908060312.24007-1-jason-jh.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210907_230903_997015_CE42365F X-CRM114-Status: GOOD ( 28.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add MERGE engine file: MERGE module is used to merge two slice-per-line inputs into one side-by-side output. Signed-off-by: jason-jh.lin --- rebase on series [1] [1] drm/mediatek: add support for mediatek SOC MT8192 - https://patchwork.kernel.org/project/linux-mediatek/list/?series=529489 --- drivers/gpu/drm/mediatek/Makefile | 1 + drivers/gpu/drm/mediatek/mtk_disp_drv.h | 8 + drivers/gpu/drm/mediatek/mtk_disp_merge.c | 239 ++++++++++++++++++++ drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 16 ++ drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 + drivers/gpu/drm/mediatek/mtk_drm_drv.c | 4 +- drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 + 7 files changed, 269 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/mediatek/mtk_disp_merge.c diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile index 29098d7c8307..a38e88e82d12 100644 --- a/drivers/gpu/drm/mediatek/Makefile +++ b/drivers/gpu/drm/mediatek/Makefile @@ -4,6 +4,7 @@ mediatek-drm-y := mtk_disp_aal.o \ mtk_disp_ccorr.o \ mtk_disp_color.o \ mtk_disp_gamma.o \ + mtk_disp_merge.o \ mtk_disp_ovl.o \ mtk_disp_rdma.o \ mtk_drm_crtc.o \ diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h index 86c3068894b1..a33b13fe2b6e 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h @@ -55,6 +55,14 @@ void mtk_gamma_set_common(void __iomem *regs, struct drm_crtc_state *state); void mtk_gamma_start(struct device *dev); void mtk_gamma_stop(struct device *dev); +int mtk_merge_clk_enable(struct device *dev); +void mtk_merge_clk_disable(struct device *dev); +void mtk_merge_config(struct device *dev, unsigned int width, + unsigned int height, unsigned int vrefresh, + unsigned int bpc, struct cmdq_pkt *cmdq_pkt); +void mtk_merge_start(struct device *dev); +void mtk_merge_stop(struct device *dev); + void mtk_ovl_bgclr_in_on(struct device *dev); void mtk_ovl_bgclr_in_off(struct device *dev); void mtk_ovl_bypass_shadow(struct device *dev); diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c new file mode 100644 index 000000000000..b05e1df79c3d --- /dev/null +++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c @@ -0,0 +1,239 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2021 MediaTek Inc. + */ + +#include +#include +#include +#include +#include +#include + +#include "mtk_drm_ddp_comp.h" +#include "mtk_drm_drv.h" +#include "mtk_disp_drv.h" + +#define DISP_REG_MERGE_CTRL 0x000 +#define MERGE_EN 1 +#define DISP_REG_MERGE_CFG_0 0x010 +#define DISP_REG_MERGE_CFG_4 0x020 +#define DISP_REG_MERGE_CFG_10 0x038 +/* no swap */ +#define SWAP_MODE 0 +#define FLD_SWAP_MODE GENMASK(4, 0) +#define DISP_REG_MERGE_CFG_12 0x040 +#define CFG_10_10_1PI_2PO_BUF_MODE 6 +#define CFG_10_10_2PI_2PO_BUF_MODE 8 +#define FLD_CFG_MERGE_MODE GENMASK(4, 0) +#define DISP_REG_MERGE_CFG_24 0x070 +#define DISP_REG_MERGE_CFG_25 0x074 +#define DISP_REG_MERGE_CFG_36 0x0a0 +#define ULTRA_EN BIT(0) +#define PREULTRA_EN BIT(4) +#define DISP_REG_MERGE_CFG_37 0x0a4 +/* 0: Off, 1: SRAM0, 2: SRAM1, 3: SRAM0 + SRAM1 */ +#define BUFFER_MODE 3 +#define FLD_BUFFER_MODE GENMASK(1, 0) +/* + * For the ultra and preultra settings, 6us ~ 9us is experience value + * and the maximum frequency of mmsys clock is 594MHz. + */ +#define DISP_REG_MERGE_CFG_40 0x0b0 +/* 6 us, 594M pixel/sec */ +#define ULTRA_TH_LOW (6 * 594) +/* 8 us, 594M pixel/sec */ +#define ULTRA_TH_HIGH (8 * 594) +#define FLD_ULTRA_TH_LOW GENMASK(15, 0) +#define FLD_ULTRA_TH_HIGH GENMASK(31, 16) +#define DISP_REG_MERGE_CFG_41 0x0b4 +/* 8 us, 594M pixel/sec */ +#define PREULTRA_TH_LOW (8 * 594) +/* 9 us, 594M pixel/sec */ +#define PREULTRA_TH_HIGH (9 * 594) +#define FLD_PREULTRA_TH_LOW GENMASK(15, 0) +#define FLD_PREULTRA_TH_HIGH GENMASK(31, 16) + +struct mtk_disp_merge { + void __iomem *regs; + struct clk *clk; + struct clk *async_clk; + struct cmdq_client_reg cmdq_reg; + bool fifo_en; +}; + +void mtk_merge_start(struct device *dev) +{ + struct mtk_disp_merge *priv = dev_get_drvdata(dev); + + writel(MERGE_EN, priv->regs + DISP_REG_MERGE_CTRL); +} + +void mtk_merge_stop(struct device *dev) +{ + struct mtk_disp_merge *priv = dev_get_drvdata(dev); + + writel(0x0, priv->regs + DISP_REG_MERGE_CTRL); +} + +static void mtk_merge_fifo_setting(struct mtk_disp_merge *priv, + struct cmdq_pkt *cmdq_pkt) +{ + mtk_ddp_write(cmdq_pkt, ULTRA_EN | PREULTRA_EN, + &priv->cmdq_reg, priv->regs, DISP_REG_MERGE_CFG_36); + + mtk_ddp_write_mask(cmdq_pkt, BUFFER_MODE, + &priv->cmdq_reg, priv->regs, DISP_REG_MERGE_CFG_37, + FLD_BUFFER_MODE); + + mtk_ddp_write_mask(cmdq_pkt, ULTRA_TH_LOW | ULTRA_TH_HIGH << 16, + &priv->cmdq_reg, priv->regs, DISP_REG_MERGE_CFG_40, + FLD_ULTRA_TH_LOW | FLD_ULTRA_TH_HIGH); + + mtk_ddp_write_mask(cmdq_pkt, PREULTRA_TH_LOW | PREULTRA_TH_HIGH << 16, + &priv->cmdq_reg, priv->regs, DISP_REG_MERGE_CFG_41, + FLD_PREULTRA_TH_LOW | FLD_PREULTRA_TH_HIGH); +} + +void mtk_merge_config(struct device *dev, unsigned int w, + unsigned int h, unsigned int vrefresh, + unsigned int bpc, struct cmdq_pkt *cmdq_pkt) +{ + struct mtk_disp_merge *priv = dev_get_drvdata(dev); + unsigned int mode = CFG_10_10_1PI_2PO_BUF_MODE; + + if (!h || !w) { + dev_err(dev, "%s: input width(%d) or height(%d) is invalid\n", __func__, w, h); + return; + } + + if (priv->fifo_en) { + mtk_merge_fifo_setting(priv, cmdq_pkt); + mode = CFG_10_10_2PI_2PO_BUF_MODE; + } + + mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, + DISP_REG_MERGE_CFG_0); + mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, + DISP_REG_MERGE_CFG_4); + mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, + DISP_REG_MERGE_CFG_24); + mtk_ddp_write(cmdq_pkt, h << 16 | w, &priv->cmdq_reg, priv->regs, + DISP_REG_MERGE_CFG_25); + mtk_ddp_write_mask(cmdq_pkt, SWAP_MODE, &priv->cmdq_reg, priv->regs, + DISP_REG_MERGE_CFG_10, FLD_SWAP_MODE); + mtk_ddp_write_mask(cmdq_pkt, mode, &priv->cmdq_reg, priv->regs, + DISP_REG_MERGE_CFG_12, FLD_CFG_MERGE_MODE); +} + +int mtk_merge_clk_enable(struct device *dev) +{ + int ret = 0; + struct mtk_disp_merge *priv = dev_get_drvdata(dev); + + ret = clk_prepare_enable(priv->clk); + if (ret) + pr_err("merge clk prepare enable failed\n"); + ret = clk_prepare_enable(priv->async_clk); + if (ret) + pr_err("async clk prepare enable failed\n"); + + return ret; +} + +void mtk_merge_clk_disable(struct device *dev) +{ + struct mtk_disp_merge *priv = dev_get_drvdata(dev); + + clk_disable_unprepare(priv->async_clk); + clk_disable_unprepare(priv->clk); +} + +static int mtk_disp_merge_bind(struct device *dev, struct device *master, + void *data) +{ + return 0; +} + +static void mtk_disp_merge_unbind(struct device *dev, struct device *master, + void *data) +{ +} + +static const struct component_ops mtk_disp_merge_component_ops = { + .bind = mtk_disp_merge_bind, + .unbind = mtk_disp_merge_unbind, +}; + +static int mtk_disp_merge_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct resource *res; + struct mtk_disp_merge *priv; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->regs = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->regs)) { + dev_err(dev, "failed to ioremap merge\n"); + return PTR_ERR(priv->regs); + } + + priv->clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->clk)) { + dev_err(dev, "failed to get merge clk\n"); + return PTR_ERR(priv->clk); + } + + priv->async_clk = of_clk_get(dev->of_node, 1); + if (IS_ERR(priv->async_clk)) { + ret = PTR_ERR(priv->async_clk); + dev_dbg(dev, "No merge async clock: %d\n", ret); + priv->async_clk = NULL; + } + +#if IS_REACHABLE(CONFIG_MTK_CMDQ) + ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0); + if (ret) + dev_dbg(dev, "get mediatek,gce-client-reg fail!\n"); +#endif + + priv->fifo_en = of_property_read_bool(dev->of_node, + "mediatek,merge-fifo-en"); + + platform_set_drvdata(pdev, priv); + + ret = component_add(dev, &mtk_disp_merge_component_ops); + if (ret != 0) + dev_err(dev, "Failed to add component: %d\n", ret); + + return ret; +} + +static int mtk_disp_merge_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &mtk_disp_merge_component_ops); + + return 0; +} + +static const struct of_device_id mtk_disp_merge_driver_dt_match[] = { + { .compatible = "mediatek,mt8195-disp-merge", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, mtk_disp_merge_driver_dt_match); + +struct platform_driver mtk_disp_merge_driver = { + .probe = mtk_disp_merge_probe, + .remove = mtk_disp_merge_remove, + .driver = { + .name = "mediatek-disp-merge", + .owner = THIS_MODULE, + .of_match_table = mtk_disp_merge_driver_dt_match, + }, +}; diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index ce6c90b9edef..eb9835102d79 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -328,6 +328,14 @@ static const struct mtk_ddp_comp_funcs ddp_gamma = { .stop = mtk_gamma_stop, }; +static const struct mtk_ddp_comp_funcs ddp_merge = { + .clk_enable = mtk_merge_clk_enable, + .clk_disable = mtk_merge_clk_disable, + .start = mtk_merge_start, + .stop = mtk_merge_stop, + .config = mtk_merge_config, +}; + static const struct mtk_ddp_comp_funcs ddp_od = { .clk_enable = mtk_ddp_clk_enable, .clk_disable = mtk_ddp_clk_disable, @@ -385,6 +393,7 @@ static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = { [MTK_DISP_DITHER] = "dither", [MTK_DISP_DSC] = "dsc", [MTK_DISP_GAMMA] = "gamma", + [MTK_DISP_MERGE] = "merge", [MTK_DISP_MUTEX] = "mutex", [MTK_DISP_OD] = "od", [MTK_DISP_OVL] = "ovl", @@ -421,6 +430,12 @@ static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = { [DDP_COMPONENT_DSI2] = { MTK_DSI, 2, &ddp_dsi }, [DDP_COMPONENT_DSI3] = { MTK_DSI, 3, &ddp_dsi }, [DDP_COMPONENT_GAMMA] = { MTK_DISP_GAMMA, 0, &ddp_gamma }, + [DDP_COMPONENT_MERGE0] = { MTK_DISP_MERGE, 0, &ddp_merge }, + [DDP_COMPONENT_MERGE1] = { MTK_DISP_MERGE, 1, &ddp_merge }, + [DDP_COMPONENT_MERGE2] = { MTK_DISP_MERGE, 2, &ddp_merge }, + [DDP_COMPONENT_MERGE3] = { MTK_DISP_MERGE, 3, &ddp_merge }, + [DDP_COMPONENT_MERGE4] = { MTK_DISP_MERGE, 4, &ddp_merge }, + [DDP_COMPONENT_MERGE5] = { MTK_DISP_MERGE, 5, &ddp_merge }, [DDP_COMPONENT_OD0] = { MTK_DISP_OD, 0, &ddp_od }, [DDP_COMPONENT_OD1] = { MTK_DISP_OD, 1, &ddp_od }, [DDP_COMPONENT_OVL0] = { MTK_DISP_OVL, 0, &ddp_ovl }, @@ -555,6 +570,7 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp, type == MTK_DISP_CCORR || type == MTK_DISP_COLOR || type == MTK_DISP_GAMMA || + type == MTK_DISP_MERGE || type == MTK_DISP_OVL || type == MTK_DISP_OVL_2L || type == MTK_DISP_PWM || diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index 5e6ff12f16ad..221e2e3a3c8d 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -25,6 +25,7 @@ enum mtk_ddp_comp_type { MTK_DISP_DITHER, MTK_DISP_DSC, MTK_DISP_GAMMA, + MTK_DISP_MERGE, MTK_DISP_MUTEX, MTK_DISP_OD, MTK_DISP_OVL, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index e0ddfae20d37..3cb3baff97e2 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -576,7 +576,7 @@ static int mtk_drm_probe(struct platform_device *pdev) private->comp_node[comp_id] = of_node_get(node); /* - * Currently only the AAL, CCORR, COLOR, GAMMA, OVL, RDMA, DSI, and DPI + * Currently only the AAL, CCORR, COLOR, GAMMA, MERGE, OVL, RDMA, DSI, and DPI * blocks have separate component platform drivers and initialize their own * DDP component structure. The others are initialized here. */ @@ -584,6 +584,7 @@ static int mtk_drm_probe(struct platform_device *pdev) comp_type == MTK_DISP_CCORR || comp_type == MTK_DISP_COLOR || comp_type == MTK_DISP_GAMMA || + comp_type == MTK_DISP_MERGE || comp_type == MTK_DISP_OVL || comp_type == MTK_DISP_OVL_2L || comp_type == MTK_DISP_RDMA || @@ -685,6 +686,7 @@ static struct platform_driver * const mtk_drm_drivers[] = { &mtk_disp_ccorr_driver, &mtk_disp_color_driver, &mtk_disp_gamma_driver, + &mtk_disp_merge_driver, &mtk_disp_ovl_driver, &mtk_disp_rdma_driver, &mtk_dpi_driver, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h index 3e7d1e6fbe01..a58cebd01d35 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h @@ -50,6 +50,7 @@ extern struct platform_driver mtk_disp_aal_driver; extern struct platform_driver mtk_disp_ccorr_driver; extern struct platform_driver mtk_disp_color_driver; extern struct platform_driver mtk_disp_gamma_driver; +extern struct platform_driver mtk_disp_merge_driver; extern struct platform_driver mtk_disp_ovl_driver; extern struct platform_driver mtk_disp_rdma_driver; extern struct platform_driver mtk_dpi_driver;