drivers/soc/mediatek/mtk-mmsys.c - SHIFTPHONES/kernel/common - Gitiles

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2014 MediaTek Inc.
  * Author: James Liao <jamesjj.liao@mediatek.com>
  */

 #include <linux/device.h>
 #include <linux/io.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/soc/mediatek/mtk-mmsys.h>

 #define DISP_REG_CONFIG_DISP_OVL0_MOUT_EN	0x040
 #define DISP_REG_CONFIG_DISP_OVL1_MOUT_EN	0x044
 #define DISP_REG_CONFIG_DISP_OD_MOUT_EN		0x048
 #define DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN	0x04c
 #define DISP_REG_CONFIG_DISP_UFOE_MOUT_EN	0x050
 #define DISP_REG_CONFIG_DISP_COLOR0_SEL_IN	0x084
 #define DISP_REG_CONFIG_DISP_COLOR1_SEL_IN	0x088
 #define DISP_REG_CONFIG_DSIE_SEL_IN		0x0a4
 #define DISP_REG_CONFIG_DSIO_SEL_IN		0x0a8
 #define DISP_REG_CONFIG_DPI_SEL_IN		0x0ac
 #define DISP_REG_CONFIG_DISP_RDMA2_SOUT		0x0b8
 #define DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN	0x0c4
 #define DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN	0x0c8
 #define DISP_REG_CONFIG_MMSYS_CG_CON0		0x100

 #define DISP_REG_CONFIG_DISP_OVL_MOUT_EN	0x030
 #define DISP_REG_CONFIG_OUT_SEL			0x04c
 #define DISP_REG_CONFIG_DSI_SEL			0x050
 #define DISP_REG_CONFIG_DPI_SEL			0x064

 #define OVL0_MOUT_EN_COLOR0			0x1
 #define OD_MOUT_EN_RDMA0			0x1
 #define OD1_MOUT_EN_RDMA1			BIT(16)
 #define UFOE_MOUT_EN_DSI0			0x1
 #define COLOR0_SEL_IN_OVL0			0x1
 #define OVL1_MOUT_EN_COLOR1			0x1
 #define GAMMA_MOUT_EN_RDMA1			0x1
 #define RDMA0_SOUT_DPI0				0x2
 #define RDMA0_SOUT_DPI1				0x3
 #define RDMA0_SOUT_DSI1				0x1
 #define RDMA0_SOUT_DSI2				0x4
 #define RDMA0_SOUT_DSI3				0x5
 #define RDMA1_SOUT_DPI0				0x2
 #define RDMA1_SOUT_DPI1				0x3
 #define RDMA1_SOUT_DSI1				0x1
 #define RDMA1_SOUT_DSI2				0x4
 #define RDMA1_SOUT_DSI3				0x5
 #define RDMA2_SOUT_DPI0				0x2
 #define RDMA2_SOUT_DPI1				0x3
 #define RDMA2_SOUT_DSI1				0x1
 #define RDMA2_SOUT_DSI2				0x4
 #define RDMA2_SOUT_DSI3				0x5
 #define DPI0_SEL_IN_RDMA1			0x1
 #define DPI0_SEL_IN_RDMA2			0x3
 #define DPI1_SEL_IN_RDMA1			(0x1 << 8)
 #define DPI1_SEL_IN_RDMA2			(0x3 << 8)
 #define DSI0_SEL_IN_RDMA1			0x1
 #define DSI0_SEL_IN_RDMA2			0x4
 #define DSI1_SEL_IN_RDMA1			0x1
 #define DSI1_SEL_IN_RDMA2			0x4
 #define DSI2_SEL_IN_RDMA1			(0x1 << 16)
 #define DSI2_SEL_IN_RDMA2			(0x4 << 16)
 #define DSI3_SEL_IN_RDMA1			(0x1 << 16)
 #define DSI3_SEL_IN_RDMA2			(0x4 << 16)
 #define COLOR1_SEL_IN_OVL1			0x1

 #define OVL_MOUT_EN_RDMA			0x1
 #define BLS_TO_DSI_RDMA1_TO_DPI1		0x8
 #define BLS_TO_DPI_RDMA1_TO_DSI			0x2
 #define DSI_SEL_IN_BLS				0x0
 #define DPI_SEL_IN_BLS				0x0
 #define DSI_SEL_IN_RDMA				0x1

 struct mtk_mmsys_driver_data {
 	const char *clk_driver;
 };

 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
 	.clk_driver = "clk-mt2701-mm",
 };

 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
 	.clk_driver = "clk-mt2712-mm",
 };

 static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = {
 	.clk_driver = "clk-mt6779-mm",
 };

 static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = {
 	.clk_driver = "clk-mt6797-mm",
 };

 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
 	.clk_driver = "clk-mt8173-mm",
 };

 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
 	.clk_driver = "clk-mt8183-mm",
 };

 static unsigned int mtk_mmsys_ddp_mout_en(enum mtk_ddp_comp_id cur,
 					  enum mtk_ddp_comp_id next,
 					  unsigned int *addr)
 {
 	unsigned int value;

 	if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
 		*addr = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN;
 		value = OVL0_MOUT_EN_COLOR0;
 	} else if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_RDMA0) {
 		*addr = DISP_REG_CONFIG_DISP_OVL_MOUT_EN;
 		value = OVL_MOUT_EN_RDMA;
 	} else if (cur == DDP_COMPONENT_OD0 && next == DDP_COMPONENT_RDMA0) {
 		*addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
 		value = OD_MOUT_EN_RDMA0;
 	} else if (cur == DDP_COMPONENT_UFOE && next == DDP_COMPONENT_DSI0) {
 		*addr = DISP_REG_CONFIG_DISP_UFOE_MOUT_EN;
 		value = UFOE_MOUT_EN_DSI0;
 	} else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
 		*addr = DISP_REG_CONFIG_DISP_OVL1_MOUT_EN;
 		value = OVL1_MOUT_EN_COLOR1;
 	} else if (cur == DDP_COMPONENT_GAMMA && next == DDP_COMPONENT_RDMA1) {
 		*addr = DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN;
 		value = GAMMA_MOUT_EN_RDMA1;
 	} else if (cur == DDP_COMPONENT_OD1 && next == DDP_COMPONENT_RDMA1) {
 		*addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
 		value = OD1_MOUT_EN_RDMA1;
 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI0) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
 		value = RDMA0_SOUT_DPI0;
 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI1) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
 		value = RDMA0_SOUT_DPI1;
 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI1) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
 		value = RDMA0_SOUT_DSI1;
 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI2) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
 		value = RDMA0_SOUT_DSI2;
 	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI3) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
 		value = RDMA0_SOUT_DSI3;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
 		value = RDMA1_SOUT_DSI1;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
 		value = RDMA1_SOUT_DSI2;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
 		value = RDMA1_SOUT_DSI3;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
 		value = RDMA1_SOUT_DPI0;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
 		value = RDMA1_SOUT_DPI1;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
 		value = RDMA2_SOUT_DPI0;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
 		value = RDMA2_SOUT_DPI1;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
 		value = RDMA2_SOUT_DSI1;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
 		value = RDMA2_SOUT_DSI2;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
 		value = RDMA2_SOUT_DSI3;
 	} else {
 		value = 0;
 	}

 	return value;
 }

 static unsigned int mtk_mmsys_ddp_sel_in(enum mtk_ddp_comp_id cur,
 					 enum mtk_ddp_comp_id next,
 					 unsigned int *addr)
 {
 	unsigned int value;

 	if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
 		*addr = DISP_REG_CONFIG_DISP_COLOR0_SEL_IN;
 		value = COLOR0_SEL_IN_OVL0;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
 		*addr = DISP_REG_CONFIG_DPI_SEL_IN;
 		value = DPI0_SEL_IN_RDMA1;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
 		*addr = DISP_REG_CONFIG_DPI_SEL_IN;
 		value = DPI1_SEL_IN_RDMA1;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) {
 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
 		value = DSI0_SEL_IN_RDMA1;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
 		*addr = DISP_REG_CONFIG_DSIO_SEL_IN;
 		value = DSI1_SEL_IN_RDMA1;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
 		value = DSI2_SEL_IN_RDMA1;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
 		*addr = DISP_REG_CONFIG_DSIO_SEL_IN;
 		value = DSI3_SEL_IN_RDMA1;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
 		*addr = DISP_REG_CONFIG_DPI_SEL_IN;
 		value = DPI0_SEL_IN_RDMA2;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
 		*addr = DISP_REG_CONFIG_DPI_SEL_IN;
 		value = DPI1_SEL_IN_RDMA2;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI0) {
 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
 		value = DSI0_SEL_IN_RDMA2;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
 		*addr = DISP_REG_CONFIG_DSIO_SEL_IN;
 		value = DSI1_SEL_IN_RDMA2;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
 		value = DSI2_SEL_IN_RDMA2;
 	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
 		*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
 		value = DSI3_SEL_IN_RDMA2;
 	} else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
 		*addr = DISP_REG_CONFIG_DISP_COLOR1_SEL_IN;
 		value = COLOR1_SEL_IN_OVL1;
 	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
 		*addr = DISP_REG_CONFIG_DSI_SEL;
 		value = DSI_SEL_IN_BLS;
 	} else {
 		value = 0;
 	}

 	return value;
 }

 static void mtk_mmsys_ddp_sout_sel(void __iomem *config_regs,
 				   enum mtk_ddp_comp_id cur,
 				   enum mtk_ddp_comp_id next)
 {
 	if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
 		writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1,
 			       config_regs + DISP_REG_CONFIG_OUT_SEL);
 	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
 		writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI,
 			       config_regs + DISP_REG_CONFIG_OUT_SEL);
 		writel_relaxed(DSI_SEL_IN_RDMA,
 			       config_regs + DISP_REG_CONFIG_DSI_SEL);
 		writel_relaxed(DPI_SEL_IN_BLS,
 			       config_regs + DISP_REG_CONFIG_DPI_SEL);
 	}
 }

 void mtk_mmsys_ddp_connect(struct device *dev,
 			   enum mtk_ddp_comp_id cur,
 			   enum mtk_ddp_comp_id next)
 {
 	void __iomem *config_regs = dev_get_drvdata(dev);
 	unsigned int addr, value, reg;

 	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
 	if (value) {
 		reg = readl_relaxed(config_regs + addr) | value;
 		writel_relaxed(reg, config_regs + addr);
 	}

 	mtk_mmsys_ddp_sout_sel(config_regs, cur, next);

 	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
 	if (value) {
 		reg = readl_relaxed(config_regs + addr) | value;
 		writel_relaxed(reg, config_regs + addr);
 	}
 }
 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect);

 void mtk_mmsys_ddp_disconnect(struct device *dev,
 			      enum mtk_ddp_comp_id cur,
 			      enum mtk_ddp_comp_id next)
 {
 	void __iomem *config_regs = dev_get_drvdata(dev);
 	unsigned int addr, value, reg;

 	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
 	if (value) {
 		reg = readl_relaxed(config_regs + addr) & ~value;
 		writel_relaxed(reg, config_regs + addr);
 	}

 	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
 	if (value) {
 		reg = readl_relaxed(config_regs + addr) & ~value;
 		writel_relaxed(reg, config_regs + addr);
 	}
 }
 EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);

 static int mtk_mmsys_probe(struct platform_device *pdev)
 {
 	const struct mtk_mmsys_driver_data *data;
 	struct device *dev = &pdev->dev;
 	struct platform_device *clks;
 	struct platform_device *drm;
 	void __iomem *config_regs;
 	struct resource *mem;
 	int ret;

 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	config_regs = devm_ioremap_resource(dev, mem);
 	if (IS_ERR(config_regs)) {
 		ret = PTR_ERR(config_regs);
 		dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
 			ret);
 		return ret;
 	}

 	platform_set_drvdata(pdev, config_regs);

 	data = of_device_get_match_data(&pdev->dev);

 	clks = platform_device_register_data(&pdev->dev, data->clk_driver,
 					     PLATFORM_DEVID_AUTO, NULL, 0);
 	if (IS_ERR(clks))
 		return PTR_ERR(clks);

 	drm = platform_device_register_data(&pdev->dev, "mediatek-drm",
 					    PLATFORM_DEVID_AUTO, NULL, 0);
 	if (IS_ERR(drm)) {
 		platform_device_unregister(clks);
 		return PTR_ERR(drm);
 	}

 	return 0;
 }

 static const struct of_device_id of_match_mtk_mmsys[] = {
 	{
 		.compatible = "mediatek,mt2701-mmsys",
 		.data = &mt2701_mmsys_driver_data,
 	},
 	{
 		.compatible = "mediatek,mt2712-mmsys",
 		.data = &mt2712_mmsys_driver_data,
 	},
 	{
 		.compatible = "mediatek,mt6779-mmsys",
 		.data = &mt6779_mmsys_driver_data,
 	},
 	{
 		.compatible = "mediatek,mt6797-mmsys",
 		.data = &mt6797_mmsys_driver_data,
 	},
 	{
 		.compatible = "mediatek,mt8173-mmsys",
 		.data = &mt8173_mmsys_driver_data,
 	},
 	{
 		.compatible = "mediatek,mt8183-mmsys",
 		.data = &mt8183_mmsys_driver_data,
 	},
 	{ }
 };

 static struct platform_driver mtk_mmsys_drv = {
 	.driver = {
 		.name = "mtk-mmsys",
 		.of_match_table = of_match_mtk_mmsys,
 	},
 	.probe = mtk_mmsys_probe,
 };

 builtin_platform_driver(mtk_mmsys_drv);
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* Copyright (c) 2014 MediaTek Inc.
	* Author: James Liao <jamesjj.liao@mediatek.com>
	*/

	#include <linux/device.h>
	#include <linux/io.h>
	#include <linux/of_device.h>
	#include <linux/platform_device.h>
	#include <linux/soc/mediatek/mtk-mmsys.h>

	#define DISP_REG_CONFIG_DISP_OVL0_MOUT_EN 0x040
	#define DISP_REG_CONFIG_DISP_OVL1_MOUT_EN 0x044
	#define DISP_REG_CONFIG_DISP_OD_MOUT_EN 0x048
	#define DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN 0x04c
	#define DISP_REG_CONFIG_DISP_UFOE_MOUT_EN 0x050
	#define DISP_REG_CONFIG_DISP_COLOR0_SEL_IN 0x084
	#define DISP_REG_CONFIG_DISP_COLOR1_SEL_IN 0x088
	#define DISP_REG_CONFIG_DSIE_SEL_IN 0x0a4
	#define DISP_REG_CONFIG_DSIO_SEL_IN 0x0a8
	#define DISP_REG_CONFIG_DPI_SEL_IN 0x0ac
	#define DISP_REG_CONFIG_DISP_RDMA2_SOUT 0x0b8
	#define DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN 0x0c4
	#define DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN 0x0c8
	#define DISP_REG_CONFIG_MMSYS_CG_CON0 0x100

	#define DISP_REG_CONFIG_DISP_OVL_MOUT_EN 0x030
	#define DISP_REG_CONFIG_OUT_SEL 0x04c
	#define DISP_REG_CONFIG_DSI_SEL 0x050
	#define DISP_REG_CONFIG_DPI_SEL 0x064

	#define OVL0_MOUT_EN_COLOR0 0x1
	#define OD_MOUT_EN_RDMA0 0x1
	#define OD1_MOUT_EN_RDMA1 BIT(16)
	#define UFOE_MOUT_EN_DSI0 0x1
	#define COLOR0_SEL_IN_OVL0 0x1
	#define OVL1_MOUT_EN_COLOR1 0x1
	#define GAMMA_MOUT_EN_RDMA1 0x1
	#define RDMA0_SOUT_DPI0 0x2
	#define RDMA0_SOUT_DPI1 0x3
	#define RDMA0_SOUT_DSI1 0x1
	#define RDMA0_SOUT_DSI2 0x4
	#define RDMA0_SOUT_DSI3 0x5
	#define RDMA1_SOUT_DPI0 0x2
	#define RDMA1_SOUT_DPI1 0x3
	#define RDMA1_SOUT_DSI1 0x1
	#define RDMA1_SOUT_DSI2 0x4
	#define RDMA1_SOUT_DSI3 0x5
	#define RDMA2_SOUT_DPI0 0x2
	#define RDMA2_SOUT_DPI1 0x3
	#define RDMA2_SOUT_DSI1 0x1
	#define RDMA2_SOUT_DSI2 0x4
	#define RDMA2_SOUT_DSI3 0x5
	#define DPI0_SEL_IN_RDMA1 0x1
	#define DPI0_SEL_IN_RDMA2 0x3
	#define DPI1_SEL_IN_RDMA1 (0x1 << 8)
	#define DPI1_SEL_IN_RDMA2 (0x3 << 8)
	#define DSI0_SEL_IN_RDMA1 0x1
	#define DSI0_SEL_IN_RDMA2 0x4
	#define DSI1_SEL_IN_RDMA1 0x1
	#define DSI1_SEL_IN_RDMA2 0x4
	#define DSI2_SEL_IN_RDMA1 (0x1 << 16)
	#define DSI2_SEL_IN_RDMA2 (0x4 << 16)
	#define DSI3_SEL_IN_RDMA1 (0x1 << 16)
	#define DSI3_SEL_IN_RDMA2 (0x4 << 16)
	#define COLOR1_SEL_IN_OVL1 0x1

	#define OVL_MOUT_EN_RDMA 0x1
	#define BLS_TO_DSI_RDMA1_TO_DPI1 0x8
	#define BLS_TO_DPI_RDMA1_TO_DSI 0x2
	#define DSI_SEL_IN_BLS 0x0
	#define DPI_SEL_IN_BLS 0x0
	#define DSI_SEL_IN_RDMA 0x1

	struct mtk_mmsys_driver_data {
	const char *clk_driver;
	};

	static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
	.clk_driver = "clk-mt2701-mm",
	};

	static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
	.clk_driver = "clk-mt2712-mm",
	};

	static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = {
	.clk_driver = "clk-mt6779-mm",
	};

	static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = {
	.clk_driver = "clk-mt6797-mm",
	};

	static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
	.clk_driver = "clk-mt8173-mm",
	};

	static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
	.clk_driver = "clk-mt8183-mm",
	};

	static unsigned int mtk_mmsys_ddp_mout_en(enum mtk_ddp_comp_id cur,
	enum mtk_ddp_comp_id next,
	unsigned int *addr)
	{
	unsigned int value;

	if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
	*addr = DISP_REG_CONFIG_DISP_OVL0_MOUT_EN;
	value = OVL0_MOUT_EN_COLOR0;
	} else if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_RDMA0) {
	*addr = DISP_REG_CONFIG_DISP_OVL_MOUT_EN;
	value = OVL_MOUT_EN_RDMA;
	} else if (cur == DDP_COMPONENT_OD0 && next == DDP_COMPONENT_RDMA0) {
	*addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
	value = OD_MOUT_EN_RDMA0;
	} else if (cur == DDP_COMPONENT_UFOE && next == DDP_COMPONENT_DSI0) {
	*addr = DISP_REG_CONFIG_DISP_UFOE_MOUT_EN;
	value = UFOE_MOUT_EN_DSI0;
	} else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
	*addr = DISP_REG_CONFIG_DISP_OVL1_MOUT_EN;
	value = OVL1_MOUT_EN_COLOR1;
	} else if (cur == DDP_COMPONENT_GAMMA && next == DDP_COMPONENT_RDMA1) {
	*addr = DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN;
	value = GAMMA_MOUT_EN_RDMA1;
	} else if (cur == DDP_COMPONENT_OD1 && next == DDP_COMPONENT_RDMA1) {
	*addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
	value = OD1_MOUT_EN_RDMA1;
	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI0) {
	*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
	value = RDMA0_SOUT_DPI0;
	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DPI1) {
	*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
	value = RDMA0_SOUT_DPI1;
	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI1) {
	*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
	value = RDMA0_SOUT_DSI1;
	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI2) {
	*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
	value = RDMA0_SOUT_DSI2;
	} else if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_DSI3) {
	*addr = DISP_REG_CONFIG_DISP_RDMA0_SOUT_EN;
	value = RDMA0_SOUT_DSI3;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
	*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
	value = RDMA1_SOUT_DSI1;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
	*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
	value = RDMA1_SOUT_DSI2;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
	*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
	value = RDMA1_SOUT_DSI3;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
	*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
	value = RDMA1_SOUT_DPI0;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
	*addr = DISP_REG_CONFIG_DISP_RDMA1_SOUT_EN;
	value = RDMA1_SOUT_DPI1;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
	*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
	value = RDMA2_SOUT_DPI0;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
	*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
	value = RDMA2_SOUT_DPI1;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
	*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
	value = RDMA2_SOUT_DSI1;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
	*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
	value = RDMA2_SOUT_DSI2;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
	*addr = DISP_REG_CONFIG_DISP_RDMA2_SOUT;
	value = RDMA2_SOUT_DSI3;
	} else {
	value = 0;
	}

	return value;
	}

	static unsigned int mtk_mmsys_ddp_sel_in(enum mtk_ddp_comp_id cur,
	enum mtk_ddp_comp_id next,
	unsigned int *addr)
	{
	unsigned int value;

	if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_COLOR0) {
	*addr = DISP_REG_CONFIG_DISP_COLOR0_SEL_IN;
	value = COLOR0_SEL_IN_OVL0;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
	*addr = DISP_REG_CONFIG_DPI_SEL_IN;
	value = DPI0_SEL_IN_RDMA1;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI1) {
	*addr = DISP_REG_CONFIG_DPI_SEL_IN;
	value = DPI1_SEL_IN_RDMA1;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI0) {
	*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
	value = DSI0_SEL_IN_RDMA1;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI1) {
	*addr = DISP_REG_CONFIG_DSIO_SEL_IN;
	value = DSI1_SEL_IN_RDMA1;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI2) {
	*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
	value = DSI2_SEL_IN_RDMA1;
	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DSI3) {
	*addr = DISP_REG_CONFIG_DSIO_SEL_IN;
	value = DSI3_SEL_IN_RDMA1;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI0) {
	*addr = DISP_REG_CONFIG_DPI_SEL_IN;
	value = DPI0_SEL_IN_RDMA2;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DPI1) {
	*addr = DISP_REG_CONFIG_DPI_SEL_IN;
	value = DPI1_SEL_IN_RDMA2;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI0) {
	*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
	value = DSI0_SEL_IN_RDMA2;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI1) {
	*addr = DISP_REG_CONFIG_DSIO_SEL_IN;
	value = DSI1_SEL_IN_RDMA2;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI2) {
	*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
	value = DSI2_SEL_IN_RDMA2;
	} else if (cur == DDP_COMPONENT_RDMA2 && next == DDP_COMPONENT_DSI3) {
	*addr = DISP_REG_CONFIG_DSIE_SEL_IN;
	value = DSI3_SEL_IN_RDMA2;
	} else if (cur == DDP_COMPONENT_OVL1 && next == DDP_COMPONENT_COLOR1) {
	*addr = DISP_REG_CONFIG_DISP_COLOR1_SEL_IN;
	value = COLOR1_SEL_IN_OVL1;
	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
	*addr = DISP_REG_CONFIG_DSI_SEL;
	value = DSI_SEL_IN_BLS;
	} else {
	value = 0;
	}

	return value;
	}

	static void mtk_mmsys_ddp_sout_sel(void __iomem *config_regs,
	enum mtk_ddp_comp_id cur,
	enum mtk_ddp_comp_id next)
	{
	if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DSI0) {
	writel_relaxed(BLS_TO_DSI_RDMA1_TO_DPI1,
	config_regs + DISP_REG_CONFIG_OUT_SEL);
	} else if (cur == DDP_COMPONENT_BLS && next == DDP_COMPONENT_DPI0) {
	writel_relaxed(BLS_TO_DPI_RDMA1_TO_DSI,
	config_regs + DISP_REG_CONFIG_OUT_SEL);
	writel_relaxed(DSI_SEL_IN_RDMA,
	config_regs + DISP_REG_CONFIG_DSI_SEL);
	writel_relaxed(DPI_SEL_IN_BLS,
	config_regs + DISP_REG_CONFIG_DPI_SEL);
	}
	}

	void mtk_mmsys_ddp_connect(struct device *dev,
	enum mtk_ddp_comp_id cur,
	enum mtk_ddp_comp_id next)
	{
	void __iomem *config_regs = dev_get_drvdata(dev);
	unsigned int addr, value, reg;

	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
	if (value) {
	reg = readl_relaxed(config_regs + addr) \| value;
	writel_relaxed(reg, config_regs + addr);
	}

	mtk_mmsys_ddp_sout_sel(config_regs, cur, next);

	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
	if (value) {
	reg = readl_relaxed(config_regs + addr) \| value;
	writel_relaxed(reg, config_regs + addr);
	}
	}
	EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_connect);

	void mtk_mmsys_ddp_disconnect(struct device *dev,
	enum mtk_ddp_comp_id cur,
	enum mtk_ddp_comp_id next)
	{
	void __iomem *config_regs = dev_get_drvdata(dev);
	unsigned int addr, value, reg;

	value = mtk_mmsys_ddp_mout_en(cur, next, &addr);
	if (value) {
	reg = readl_relaxed(config_regs + addr) & ~value;
	writel_relaxed(reg, config_regs + addr);
	}

	value = mtk_mmsys_ddp_sel_in(cur, next, &addr);
	if (value) {
	reg = readl_relaxed(config_regs + addr) & ~value;
	writel_relaxed(reg, config_regs + addr);
	}
	}
	EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);

	static int mtk_mmsys_probe(struct platform_device *pdev)
	{
	const struct mtk_mmsys_driver_data *data;
	struct device *dev = &pdev->dev;
	struct platform_device *clks;
	struct platform_device *drm;
	void __iomem *config_regs;
	struct resource *mem;
	int ret;

	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	config_regs = devm_ioremap_resource(dev, mem);
	if (IS_ERR(config_regs)) {
	ret = PTR_ERR(config_regs);
	dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
	ret);
	return ret;
	}

	platform_set_drvdata(pdev, config_regs);

	data = of_device_get_match_data(&pdev->dev);

	clks = platform_device_register_data(&pdev->dev, data->clk_driver,
	PLATFORM_DEVID_AUTO, NULL, 0);
	if (IS_ERR(clks))
	return PTR_ERR(clks);

	drm = platform_device_register_data(&pdev->dev, "mediatek-drm",
	PLATFORM_DEVID_AUTO, NULL, 0);
	if (IS_ERR(drm)) {
	platform_device_unregister(clks);
	return PTR_ERR(drm);
	}

	return 0;
	}

	static const struct of_device_id of_match_mtk_mmsys[] = {
	{
	.compatible = "mediatek,mt2701-mmsys",
	.data = &mt2701_mmsys_driver_data,
	},
	{
	.compatible = "mediatek,mt2712-mmsys",
	.data = &mt2712_mmsys_driver_data,
	},
	{
	.compatible = "mediatek,mt6779-mmsys",
	.data = &mt6779_mmsys_driver_data,
	},
	{
	.compatible = "mediatek,mt6797-mmsys",
	.data = &mt6797_mmsys_driver_data,
	},
	{
	.compatible = "mediatek,mt8173-mmsys",
	.data = &mt8173_mmsys_driver_data,
	},
	{
	.compatible = "mediatek,mt8183-mmsys",
	.data = &mt8183_mmsys_driver_data,
	},
	{ }
	};

	static struct platform_driver mtk_mmsys_drv = {
	.driver = {
	.name = "mtk-mmsys",
	.of_match_table = of_match_mtk_mmsys,
	},
	.probe = mtk_mmsys_probe,
	};

	builtin_platform_driver(mtk_mmsys_drv);