drivers/gpu/drm/mediatek/mtk_disp_rdma.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2015 MediaTek Inc.
  */

 #include <drm/drm_fourcc.h>

 #include <linux/clk.h>
 #include <linux/component.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/soc/mediatek/mtk-cmdq.h>

 #include "mtk_disp_drv.h"
 #include "mtk_drm_crtc.h"
 #include "mtk_drm_ddp_comp.h"
 #include "mtk_drm_drv.h"

 #define DISP_REG_RDMA_INT_ENABLE		0x0000
 #define DISP_REG_RDMA_INT_STATUS		0x0004
 #define RDMA_TARGET_LINE_INT				BIT(5)
 #define RDMA_FIFO_UNDERFLOW_INT				BIT(4)
 #define RDMA_EOF_ABNORMAL_INT				BIT(3)
 #define RDMA_FRAME_END_INT				BIT(2)
 #define RDMA_FRAME_START_INT				BIT(1)
 #define RDMA_REG_UPDATE_INT				BIT(0)
 #define DISP_REG_RDMA_GLOBAL_CON		0x0010
 #define RDMA_ENGINE_EN					BIT(0)
 #define RDMA_MODE_MEMORY				BIT(1)
 #define DISP_REG_RDMA_SIZE_CON_0		0x0014
 #define RDMA_MATRIX_ENABLE				BIT(17)
 #define RDMA_MATRIX_INT_MTX_SEL				GENMASK(23, 20)
 #define RDMA_MATRIX_INT_MTX_BT601_to_RGB		(6 << 20)
 #define DISP_REG_RDMA_SIZE_CON_1		0x0018
 #define DISP_REG_RDMA_TARGET_LINE		0x001c
 #define DISP_RDMA_MEM_CON			0x0024
 #define MEM_MODE_INPUT_FORMAT_RGB565			(0x000 << 4)
 #define MEM_MODE_INPUT_FORMAT_RGB888			(0x001 << 4)
 #define MEM_MODE_INPUT_FORMAT_RGBA8888			(0x002 << 4)
 #define MEM_MODE_INPUT_FORMAT_ARGB8888			(0x003 << 4)
 #define MEM_MODE_INPUT_FORMAT_UYVY			(0x004 << 4)
 #define MEM_MODE_INPUT_FORMAT_YUYV			(0x005 << 4)
 #define MEM_MODE_INPUT_SWAP				BIT(8)
 #define DISP_RDMA_MEM_SRC_PITCH			0x002c
 #define DISP_RDMA_MEM_GMC_SETTING_0		0x0030
 #define DISP_REG_RDMA_FIFO_CON			0x0040
 #define RDMA_FIFO_UNDERFLOW_EN				BIT(31)
 #define RDMA_FIFO_PSEUDO_SIZE(bytes)			(((bytes) / 16) << 16)
 #define RDMA_OUTPUT_VALID_FIFO_THRESHOLD(bytes)		((bytes) / 16)
 #define RDMA_FIFO_SIZE(rdma)			((rdma)->data->fifo_size)
 #define DISP_RDMA_MEM_START_ADDR		0x0f00

 #define RDMA_MEM_GMC				0x40402020

 static const u32 mt8173_formats[] = {
 	DRM_FORMAT_XRGB8888,
 	DRM_FORMAT_ARGB8888,
 	DRM_FORMAT_BGRX8888,
 	DRM_FORMAT_BGRA8888,
 	DRM_FORMAT_ABGR8888,
 	DRM_FORMAT_XBGR8888,
 	DRM_FORMAT_RGB888,
 	DRM_FORMAT_BGR888,
 	DRM_FORMAT_RGB565,
 	DRM_FORMAT_UYVY,
 	DRM_FORMAT_YUYV,
 };

 struct mtk_disp_rdma_data {
 	unsigned int fifo_size;
 	const u32 *formats;
 	size_t num_formats;
 };

 /*
  * struct mtk_disp_rdma - DISP_RDMA driver structure
  * @data: local driver data
  */
 struct mtk_disp_rdma {
 	struct clk			*clk;
 	void __iomem			*regs;
 	struct cmdq_client_reg		cmdq_reg;
 	const struct mtk_disp_rdma_data	*data;
 	void				(*vblank_cb)(void *data);
 	void				*vblank_cb_data;
 	u32				fifo_size;
 };

 static irqreturn_t mtk_disp_rdma_irq_handler(int irq, void *dev_id)
 {
 	struct mtk_disp_rdma *priv = dev_id;

 	/* Clear frame completion interrupt */
 	writel(0x0, priv->regs + DISP_REG_RDMA_INT_STATUS);

 	if (!priv->vblank_cb)
 		return IRQ_NONE;

 	priv->vblank_cb(priv->vblank_cb_data);

 	return IRQ_HANDLED;
 }

 static void rdma_update_bits(struct device *dev, unsigned int reg,
 			     unsigned int mask, unsigned int val)
 {
 	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);
 	unsigned int tmp = readl(rdma->regs + reg);

 	tmp = (tmp & ~mask) | (val & mask);
 	writel(tmp, rdma->regs + reg);
 }

 void mtk_rdma_register_vblank_cb(struct device *dev,
 				 void (*vblank_cb)(void *),
 				 void *vblank_cb_data)
 {
 	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

 	rdma->vblank_cb = vblank_cb;
 	rdma->vblank_cb_data = vblank_cb_data;
 }

 void mtk_rdma_unregister_vblank_cb(struct device *dev)
 {
 	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

 	rdma->vblank_cb = NULL;
 	rdma->vblank_cb_data = NULL;
 }

 void mtk_rdma_enable_vblank(struct device *dev)
 {
 	rdma_update_bits(dev, DISP_REG_RDMA_INT_ENABLE, RDMA_FRAME_END_INT,
 			 RDMA_FRAME_END_INT);
 }

 void mtk_rdma_disable_vblank(struct device *dev)
 {
 	rdma_update_bits(dev, DISP_REG_RDMA_INT_ENABLE, RDMA_FRAME_END_INT, 0);
 }

 const u32 *mtk_rdma_get_formats(struct device *dev)
 {
 	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

 	return rdma->data->formats;
 }

 size_t mtk_rdma_get_num_formats(struct device *dev)
 {
 	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

 	return rdma->data->num_formats;
 }

 int mtk_rdma_clk_enable(struct device *dev)
 {
 	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

 	return clk_prepare_enable(rdma->clk);
 }

 void mtk_rdma_clk_disable(struct device *dev)
 {
 	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

 	clk_disable_unprepare(rdma->clk);
 }

 void mtk_rdma_start(struct device *dev)
 {
 	rdma_update_bits(dev, DISP_REG_RDMA_GLOBAL_CON, RDMA_ENGINE_EN,
 			 RDMA_ENGINE_EN);
 }

 void mtk_rdma_stop(struct device *dev)
 {
 	rdma_update_bits(dev, DISP_REG_RDMA_GLOBAL_CON, RDMA_ENGINE_EN, 0);
 }

 void mtk_rdma_config(struct device *dev, unsigned int width,
 		     unsigned int height, unsigned int vrefresh,
 		     unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
 {
 	unsigned int threshold;
 	unsigned int reg;
 	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);
 	u32 rdma_fifo_size;

 	mtk_ddp_write_mask(cmdq_pkt, width, &rdma->cmdq_reg, rdma->regs,
 			   DISP_REG_RDMA_SIZE_CON_0, 0xfff);
 	mtk_ddp_write_mask(cmdq_pkt, height, &rdma->cmdq_reg, rdma->regs,
 			   DISP_REG_RDMA_SIZE_CON_1, 0xfffff);

 	if (rdma->fifo_size)
 		rdma_fifo_size = rdma->fifo_size;
 	else
 		rdma_fifo_size = RDMA_FIFO_SIZE(rdma);

 	/*
 	 * Enable FIFO underflow since DSI and DPI can't be blocked.
 	 * Keep the FIFO pseudo size reset default of 8 KiB. Set the
 	 * output threshold to 70% of max fifo size to make sure the
 	 * threhold will not overflow
 	 */
 	threshold = rdma_fifo_size * 7 / 10;
 	reg = RDMA_FIFO_UNDERFLOW_EN |
 	      RDMA_FIFO_PSEUDO_SIZE(rdma_fifo_size) |
 	      RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold);
 	mtk_ddp_write(cmdq_pkt, reg, &rdma->cmdq_reg, rdma->regs, DISP_REG_RDMA_FIFO_CON);
 }

 static unsigned int rdma_fmt_convert(struct mtk_disp_rdma *rdma,
 				     unsigned int fmt)
 {
 	/* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX"
 	 * is defined in mediatek HW data sheet.
 	 * The alphabet order in XXX is no relation to data
 	 * arrangement in memory.
 	 */
 	switch (fmt) {
 	default:
 	case DRM_FORMAT_RGB565:
 		return MEM_MODE_INPUT_FORMAT_RGB565;
 	case DRM_FORMAT_BGR565:
 		return MEM_MODE_INPUT_FORMAT_RGB565 | MEM_MODE_INPUT_SWAP;
 	case DRM_FORMAT_RGB888:
 		return MEM_MODE_INPUT_FORMAT_RGB888;
 	case DRM_FORMAT_BGR888:
 		return MEM_MODE_INPUT_FORMAT_RGB888 | MEM_MODE_INPUT_SWAP;
 	case DRM_FORMAT_RGBX8888:
 	case DRM_FORMAT_RGBA8888:
 		return MEM_MODE_INPUT_FORMAT_ARGB8888;
 	case DRM_FORMAT_BGRX8888:
 	case DRM_FORMAT_BGRA8888:
 		return MEM_MODE_INPUT_FORMAT_ARGB8888 | MEM_MODE_INPUT_SWAP;
 	case DRM_FORMAT_XRGB8888:
 	case DRM_FORMAT_ARGB8888:
 		return MEM_MODE_INPUT_FORMAT_RGBA8888;
 	case DRM_FORMAT_XBGR8888:
 	case DRM_FORMAT_ABGR8888:
 		return MEM_MODE_INPUT_FORMAT_RGBA8888 | MEM_MODE_INPUT_SWAP;
 	case DRM_FORMAT_UYVY:
 		return MEM_MODE_INPUT_FORMAT_UYVY;
 	case DRM_FORMAT_YUYV:
 		return MEM_MODE_INPUT_FORMAT_YUYV;
 	}
 }

 unsigned int mtk_rdma_layer_nr(struct device *dev)
 {
 	return 1;
 }

 void mtk_rdma_layer_config(struct device *dev, unsigned int idx,
 			   struct mtk_plane_state *state,
 			   struct cmdq_pkt *cmdq_pkt)
 {
 	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);
 	struct mtk_plane_pending_state *pending = &state->pending;
 	unsigned int addr = pending->addr;
 	unsigned int pitch = pending->pitch & 0xffff;
 	unsigned int fmt = pending->format;
 	unsigned int con;

 	con = rdma_fmt_convert(rdma, fmt);
 	mtk_ddp_write_relaxed(cmdq_pkt, con, &rdma->cmdq_reg, rdma->regs, DISP_RDMA_MEM_CON);

 	if (fmt == DRM_FORMAT_UYVY || fmt == DRM_FORMAT_YUYV) {
 		mtk_ddp_write_mask(cmdq_pkt, RDMA_MATRIX_ENABLE, &rdma->cmdq_reg, rdma->regs,
 				   DISP_REG_RDMA_SIZE_CON_0,
 				   RDMA_MATRIX_ENABLE);
 		mtk_ddp_write_mask(cmdq_pkt, RDMA_MATRIX_INT_MTX_BT601_to_RGB,
 				   &rdma->cmdq_reg, rdma->regs, DISP_REG_RDMA_SIZE_CON_0,
 				   RDMA_MATRIX_INT_MTX_SEL);
 	} else {
 		mtk_ddp_write_mask(cmdq_pkt, 0, &rdma->cmdq_reg, rdma->regs,
 				   DISP_REG_RDMA_SIZE_CON_0,
 				   RDMA_MATRIX_ENABLE);
 	}
 	mtk_ddp_write_relaxed(cmdq_pkt, addr, &rdma->cmdq_reg, rdma->regs,
 			      DISP_RDMA_MEM_START_ADDR);
 	mtk_ddp_write_relaxed(cmdq_pkt, pitch, &rdma->cmdq_reg, rdma->regs,
 			      DISP_RDMA_MEM_SRC_PITCH);
 	mtk_ddp_write(cmdq_pkt, RDMA_MEM_GMC, &rdma->cmdq_reg, rdma->regs,
 		      DISP_RDMA_MEM_GMC_SETTING_0);
 	mtk_ddp_write_mask(cmdq_pkt, RDMA_MODE_MEMORY, &rdma->cmdq_reg, rdma->regs,
 			   DISP_REG_RDMA_GLOBAL_CON, RDMA_MODE_MEMORY);

 }

 static int mtk_disp_rdma_bind(struct device *dev, struct device *master,
 			      void *data)
 {
 	return 0;

 }

 static void mtk_disp_rdma_unbind(struct device *dev, struct device *master,
 				 void *data)
 {
 }

 static const struct component_ops mtk_disp_rdma_component_ops = {
 	.bind	= mtk_disp_rdma_bind,
 	.unbind = mtk_disp_rdma_unbind,
 };

 static int mtk_disp_rdma_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_disp_rdma *priv;
 	struct resource *res;
 	int irq;
 	int ret;

 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;

 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
 		return irq;

 	priv->clk = devm_clk_get(dev, NULL);
 	if (IS_ERR(priv->clk)) {
 		dev_err(dev, "failed to get rdma clk\n");
 		return PTR_ERR(priv->clk);
 	}

 	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 rdma\n");
 		return PTR_ERR(priv->regs);
 	}
 #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

 	if (of_find_property(dev->of_node, "mediatek,rdma-fifo-size", &ret)) {
 		ret = of_property_read_u32(dev->of_node,
 					   "mediatek,rdma-fifo-size",
 					   &priv->fifo_size);
 		if (ret) {
 			dev_err(dev, "Failed to get rdma fifo size\n");
 			return ret;
 		}
 	}

 	/* Disable and clear pending interrupts */
 	writel(0x0, priv->regs + DISP_REG_RDMA_INT_ENABLE);
 	writel(0x0, priv->regs + DISP_REG_RDMA_INT_STATUS);

 	ret = devm_request_irq(dev, irq, mtk_disp_rdma_irq_handler,
 			       IRQF_TRIGGER_NONE, dev_name(dev), priv);
 	if (ret < 0) {
 		dev_err(dev, "Failed to request irq %d: %d\n", irq, ret);
 		return ret;
 	}

 	priv->data = of_device_get_match_data(dev);

 	platform_set_drvdata(pdev, priv);

 	pm_runtime_enable(dev);

 	ret = component_add(dev, &mtk_disp_rdma_component_ops);
 	if (ret) {
 		pm_runtime_disable(dev);
 		dev_err(dev, "Failed to add component: %d\n", ret);
 	}

 	return ret;
 }

 static void mtk_disp_rdma_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &mtk_disp_rdma_component_ops);

 	pm_runtime_disable(&pdev->dev);
 }

 static const struct mtk_disp_rdma_data mt2701_rdma_driver_data = {
 	.fifo_size = SZ_4K,
 	.formats = mt8173_formats,
 	.num_formats = ARRAY_SIZE(mt8173_formats),
 };

 static const struct mtk_disp_rdma_data mt8173_rdma_driver_data = {
 	.fifo_size = SZ_8K,
 	.formats = mt8173_formats,
 	.num_formats = ARRAY_SIZE(mt8173_formats),
 };

 static const struct mtk_disp_rdma_data mt8183_rdma_driver_data = {
 	.fifo_size = 5 * SZ_1K,
 	.formats = mt8173_formats,
 	.num_formats = ARRAY_SIZE(mt8173_formats),
 };

 static const struct mtk_disp_rdma_data mt8195_rdma_driver_data = {
 	.fifo_size = 1920,
 	.formats = mt8173_formats,
 	.num_formats = ARRAY_SIZE(mt8173_formats),
 };

 static const struct of_device_id mtk_disp_rdma_driver_dt_match[] = {
 	{ .compatible = "mediatek,mt2701-disp-rdma",
 	  .data = &mt2701_rdma_driver_data},
 	{ .compatible = "mediatek,mt8173-disp-rdma",
 	  .data = &mt8173_rdma_driver_data},
 	{ .compatible = "mediatek,mt8183-disp-rdma",
 	  .data = &mt8183_rdma_driver_data},
 	{ .compatible = "mediatek,mt8195-disp-rdma",
 	  .data = &mt8195_rdma_driver_data},
 	{},
 };
 MODULE_DEVICE_TABLE(of, mtk_disp_rdma_driver_dt_match);

 struct platform_driver mtk_disp_rdma_driver = {
 	.probe		= mtk_disp_rdma_probe,
 	.remove_new	= mtk_disp_rdma_remove,
 	.driver		= {
 		.name	= "mediatek-disp-rdma",
 		.owner	= THIS_MODULE,
 		.of_match_table = mtk_disp_rdma_driver_dt_match,
 	},
 };
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* Copyright (c) 2015 MediaTek Inc.
	*/

	#include <drm/drm_fourcc.h>

	#include <linux/clk.h>
	#include <linux/component.h>
	#include <linux/module.h>
	#include <linux/of.h>
	#include <linux/platform_device.h>
	#include <linux/pm_runtime.h>
	#include <linux/soc/mediatek/mtk-cmdq.h>

	#include "mtk_disp_drv.h"
	#include "mtk_drm_crtc.h"
	#include "mtk_drm_ddp_comp.h"
	#include "mtk_drm_drv.h"

	#define DISP_REG_RDMA_INT_ENABLE 0x0000
	#define DISP_REG_RDMA_INT_STATUS 0x0004
	#define RDMA_TARGET_LINE_INT BIT(5)
	#define RDMA_FIFO_UNDERFLOW_INT BIT(4)
	#define RDMA_EOF_ABNORMAL_INT BIT(3)
	#define RDMA_FRAME_END_INT BIT(2)
	#define RDMA_FRAME_START_INT BIT(1)
	#define RDMA_REG_UPDATE_INT BIT(0)
	#define DISP_REG_RDMA_GLOBAL_CON 0x0010
	#define RDMA_ENGINE_EN BIT(0)
	#define RDMA_MODE_MEMORY BIT(1)
	#define DISP_REG_RDMA_SIZE_CON_0 0x0014
	#define RDMA_MATRIX_ENABLE BIT(17)
	#define RDMA_MATRIX_INT_MTX_SEL GENMASK(23, 20)
	#define RDMA_MATRIX_INT_MTX_BT601_to_RGB (6 << 20)
	#define DISP_REG_RDMA_SIZE_CON_1 0x0018
	#define DISP_REG_RDMA_TARGET_LINE 0x001c
	#define DISP_RDMA_MEM_CON 0x0024
	#define MEM_MODE_INPUT_FORMAT_RGB565 (0x000 << 4)
	#define MEM_MODE_INPUT_FORMAT_RGB888 (0x001 << 4)
	#define MEM_MODE_INPUT_FORMAT_RGBA8888 (0x002 << 4)
	#define MEM_MODE_INPUT_FORMAT_ARGB8888 (0x003 << 4)
	#define MEM_MODE_INPUT_FORMAT_UYVY (0x004 << 4)
	#define MEM_MODE_INPUT_FORMAT_YUYV (0x005 << 4)
	#define MEM_MODE_INPUT_SWAP BIT(8)
	#define DISP_RDMA_MEM_SRC_PITCH 0x002c
	#define DISP_RDMA_MEM_GMC_SETTING_0 0x0030
	#define DISP_REG_RDMA_FIFO_CON 0x0040
	#define RDMA_FIFO_UNDERFLOW_EN BIT(31)
	#define RDMA_FIFO_PSEUDO_SIZE(bytes) (((bytes) / 16) << 16)
	#define RDMA_OUTPUT_VALID_FIFO_THRESHOLD(bytes) ((bytes) / 16)
	#define RDMA_FIFO_SIZE(rdma) ((rdma)->data->fifo_size)
	#define DISP_RDMA_MEM_START_ADDR 0x0f00

	#define RDMA_MEM_GMC 0x40402020

	static const u32 mt8173_formats[] = {
	DRM_FORMAT_XRGB8888,
	DRM_FORMAT_ARGB8888,
	DRM_FORMAT_BGRX8888,
	DRM_FORMAT_BGRA8888,
	DRM_FORMAT_ABGR8888,
	DRM_FORMAT_XBGR8888,
	DRM_FORMAT_RGB888,
	DRM_FORMAT_BGR888,
	DRM_FORMAT_RGB565,
	DRM_FORMAT_UYVY,
	DRM_FORMAT_YUYV,
	};

	struct mtk_disp_rdma_data {
	unsigned int fifo_size;
	const u32 *formats;
	size_t num_formats;
	};

	/*
	* struct mtk_disp_rdma - DISP_RDMA driver structure
	* @data: local driver data
	*/
	struct mtk_disp_rdma {
	struct clk *clk;
	void __iomem *regs;
	struct cmdq_client_reg cmdq_reg;
	const struct mtk_disp_rdma_data *data;
	void (vblank_cb)(void data);
	void *vblank_cb_data;
	u32 fifo_size;
	};

	static irqreturn_t mtk_disp_rdma_irq_handler(int irq, void *dev_id)
	{
	struct mtk_disp_rdma *priv = dev_id;

	/* Clear frame completion interrupt */
	writel(0x0, priv->regs + DISP_REG_RDMA_INT_STATUS);

	if (!priv->vblank_cb)
	return IRQ_NONE;

	priv->vblank_cb(priv->vblank_cb_data);

	return IRQ_HANDLED;
	}

	static void rdma_update_bits(struct device *dev, unsigned int reg,
	unsigned int mask, unsigned int val)
	{
	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);
	unsigned int tmp = readl(rdma->regs + reg);

	tmp = (tmp & ~mask) \| (val & mask);
	writel(tmp, rdma->regs + reg);
	}

	void mtk_rdma_register_vblank_cb(struct device *dev,
	void (vblank_cb)(void ),
	void *vblank_cb_data)
	{
	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

	rdma->vblank_cb = vblank_cb;
	rdma->vblank_cb_data = vblank_cb_data;
	}

	void mtk_rdma_unregister_vblank_cb(struct device *dev)
	{
	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

	rdma->vblank_cb = NULL;
	rdma->vblank_cb_data = NULL;
	}

	void mtk_rdma_enable_vblank(struct device *dev)
	{
	rdma_update_bits(dev, DISP_REG_RDMA_INT_ENABLE, RDMA_FRAME_END_INT,
	RDMA_FRAME_END_INT);
	}

	void mtk_rdma_disable_vblank(struct device *dev)
	{
	rdma_update_bits(dev, DISP_REG_RDMA_INT_ENABLE, RDMA_FRAME_END_INT, 0);
	}

	const u32 mtk_rdma_get_formats(struct device dev)
	{
	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

	return rdma->data->formats;
	}

	size_t mtk_rdma_get_num_formats(struct device *dev)
	{
	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

	return rdma->data->num_formats;
	}

	int mtk_rdma_clk_enable(struct device *dev)
	{
	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

	return clk_prepare_enable(rdma->clk);
	}

	void mtk_rdma_clk_disable(struct device *dev)
	{
	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);

	clk_disable_unprepare(rdma->clk);
	}

	void mtk_rdma_start(struct device *dev)
	{
	rdma_update_bits(dev, DISP_REG_RDMA_GLOBAL_CON, RDMA_ENGINE_EN,
	RDMA_ENGINE_EN);
	}

	void mtk_rdma_stop(struct device *dev)
	{
	rdma_update_bits(dev, DISP_REG_RDMA_GLOBAL_CON, RDMA_ENGINE_EN, 0);
	}

	void mtk_rdma_config(struct device *dev, unsigned int width,
	unsigned int height, unsigned int vrefresh,
	unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
	{
	unsigned int threshold;
	unsigned int reg;
	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);
	u32 rdma_fifo_size;

	mtk_ddp_write_mask(cmdq_pkt, width, &rdma->cmdq_reg, rdma->regs,
	DISP_REG_RDMA_SIZE_CON_0, 0xfff);
	mtk_ddp_write_mask(cmdq_pkt, height, &rdma->cmdq_reg, rdma->regs,
	DISP_REG_RDMA_SIZE_CON_1, 0xfffff);

	if (rdma->fifo_size)
	rdma_fifo_size = rdma->fifo_size;
	else
	rdma_fifo_size = RDMA_FIFO_SIZE(rdma);

	/*
	* Enable FIFO underflow since DSI and DPI can't be blocked.
	* Keep the FIFO pseudo size reset default of 8 KiB. Set the
	* output threshold to 70% of max fifo size to make sure the
	* threhold will not overflow
	*/
	threshold = rdma_fifo_size * 7 / 10;
	reg = RDMA_FIFO_UNDERFLOW_EN \|
	RDMA_FIFO_PSEUDO_SIZE(rdma_fifo_size) \|
	RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold);
	mtk_ddp_write(cmdq_pkt, reg, &rdma->cmdq_reg, rdma->regs, DISP_REG_RDMA_FIFO_CON);
	}

	static unsigned int rdma_fmt_convert(struct mtk_disp_rdma *rdma,
	unsigned int fmt)
	{
	/* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX"
	* is defined in mediatek HW data sheet.
	* The alphabet order in XXX is no relation to data
	* arrangement in memory.
	*/
	switch (fmt) {
	default:
	case DRM_FORMAT_RGB565:
	return MEM_MODE_INPUT_FORMAT_RGB565;
	case DRM_FORMAT_BGR565:
	return MEM_MODE_INPUT_FORMAT_RGB565 \| MEM_MODE_INPUT_SWAP;
	case DRM_FORMAT_RGB888:
	return MEM_MODE_INPUT_FORMAT_RGB888;
	case DRM_FORMAT_BGR888:
	return MEM_MODE_INPUT_FORMAT_RGB888 \| MEM_MODE_INPUT_SWAP;
	case DRM_FORMAT_RGBX8888:
	case DRM_FORMAT_RGBA8888:
	return MEM_MODE_INPUT_FORMAT_ARGB8888;
	case DRM_FORMAT_BGRX8888:
	case DRM_FORMAT_BGRA8888:
	return MEM_MODE_INPUT_FORMAT_ARGB8888 \| MEM_MODE_INPUT_SWAP;
	case DRM_FORMAT_XRGB8888:
	case DRM_FORMAT_ARGB8888:
	return MEM_MODE_INPUT_FORMAT_RGBA8888;
	case DRM_FORMAT_XBGR8888:
	case DRM_FORMAT_ABGR8888:
	return MEM_MODE_INPUT_FORMAT_RGBA8888 \| MEM_MODE_INPUT_SWAP;
	case DRM_FORMAT_UYVY:
	return MEM_MODE_INPUT_FORMAT_UYVY;
	case DRM_FORMAT_YUYV:
	return MEM_MODE_INPUT_FORMAT_YUYV;
	}
	}

	unsigned int mtk_rdma_layer_nr(struct device *dev)
	{
	return 1;
	}

	void mtk_rdma_layer_config(struct device *dev, unsigned int idx,
	struct mtk_plane_state *state,
	struct cmdq_pkt *cmdq_pkt)
	{
	struct mtk_disp_rdma *rdma = dev_get_drvdata(dev);
	struct mtk_plane_pending_state *pending = &state->pending;
	unsigned int addr = pending->addr;
	unsigned int pitch = pending->pitch & 0xffff;
	unsigned int fmt = pending->format;
	unsigned int con;

	con = rdma_fmt_convert(rdma, fmt);
	mtk_ddp_write_relaxed(cmdq_pkt, con, &rdma->cmdq_reg, rdma->regs, DISP_RDMA_MEM_CON);

	if (fmt == DRM_FORMAT_UYVY \|\| fmt == DRM_FORMAT_YUYV) {
	mtk_ddp_write_mask(cmdq_pkt, RDMA_MATRIX_ENABLE, &rdma->cmdq_reg, rdma->regs,
	DISP_REG_RDMA_SIZE_CON_0,
	RDMA_MATRIX_ENABLE);
	mtk_ddp_write_mask(cmdq_pkt, RDMA_MATRIX_INT_MTX_BT601_to_RGB,
	&rdma->cmdq_reg, rdma->regs, DISP_REG_RDMA_SIZE_CON_0,
	RDMA_MATRIX_INT_MTX_SEL);
	} else {
	mtk_ddp_write_mask(cmdq_pkt, 0, &rdma->cmdq_reg, rdma->regs,
	DISP_REG_RDMA_SIZE_CON_0,
	RDMA_MATRIX_ENABLE);
	}
	mtk_ddp_write_relaxed(cmdq_pkt, addr, &rdma->cmdq_reg, rdma->regs,
	DISP_RDMA_MEM_START_ADDR);
	mtk_ddp_write_relaxed(cmdq_pkt, pitch, &rdma->cmdq_reg, rdma->regs,
	DISP_RDMA_MEM_SRC_PITCH);
	mtk_ddp_write(cmdq_pkt, RDMA_MEM_GMC, &rdma->cmdq_reg, rdma->regs,
	DISP_RDMA_MEM_GMC_SETTING_0);
	mtk_ddp_write_mask(cmdq_pkt, RDMA_MODE_MEMORY, &rdma->cmdq_reg, rdma->regs,
	DISP_REG_RDMA_GLOBAL_CON, RDMA_MODE_MEMORY);

	}

	static int mtk_disp_rdma_bind(struct device dev, struct device master,
	void *data)
	{
	return 0;

	}

	static void mtk_disp_rdma_unbind(struct device dev, struct device master,
	void *data)
	{
	}

	static const struct component_ops mtk_disp_rdma_component_ops = {
	.bind = mtk_disp_rdma_bind,
	.unbind = mtk_disp_rdma_unbind,
	};

	static int mtk_disp_rdma_probe(struct platform_device *pdev)
	{
	struct device *dev = &pdev->dev;
	struct mtk_disp_rdma *priv;
	struct resource *res;
	int irq;
	int ret;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
	return -ENOMEM;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
	return irq;

	priv->clk = devm_clk_get(dev, NULL);
	if (IS_ERR(priv->clk)) {
	dev_err(dev, "failed to get rdma clk\n");
	return PTR_ERR(priv->clk);
	}

	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 rdma\n");
	return PTR_ERR(priv->regs);
	}
	#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

	if (of_find_property(dev->of_node, "mediatek,rdma-fifo-size", &ret)) {
	ret = of_property_read_u32(dev->of_node,
	"mediatek,rdma-fifo-size",
	&priv->fifo_size);
	if (ret) {
	dev_err(dev, "Failed to get rdma fifo size\n");
	return ret;
	}
	}

	/* Disable and clear pending interrupts */
	writel(0x0, priv->regs + DISP_REG_RDMA_INT_ENABLE);
	writel(0x0, priv->regs + DISP_REG_RDMA_INT_STATUS);

	ret = devm_request_irq(dev, irq, mtk_disp_rdma_irq_handler,
	IRQF_TRIGGER_NONE, dev_name(dev), priv);
	if (ret < 0) {
	dev_err(dev, "Failed to request irq %d: %d\n", irq, ret);
	return ret;
	}

	priv->data = of_device_get_match_data(dev);

	platform_set_drvdata(pdev, priv);

	pm_runtime_enable(dev);

	ret = component_add(dev, &mtk_disp_rdma_component_ops);
	if (ret) {
	pm_runtime_disable(dev);
	dev_err(dev, "Failed to add component: %d\n", ret);
	}

	return ret;
	}

	static void mtk_disp_rdma_remove(struct platform_device *pdev)
	{
	component_del(&pdev->dev, &mtk_disp_rdma_component_ops);

	pm_runtime_disable(&pdev->dev);
	}

	static const struct mtk_disp_rdma_data mt2701_rdma_driver_data = {
	.fifo_size = SZ_4K,
	.formats = mt8173_formats,
	.num_formats = ARRAY_SIZE(mt8173_formats),
	};

	static const struct mtk_disp_rdma_data mt8173_rdma_driver_data = {
	.fifo_size = SZ_8K,
	.formats = mt8173_formats,
	.num_formats = ARRAY_SIZE(mt8173_formats),
	};

	static const struct mtk_disp_rdma_data mt8183_rdma_driver_data = {
	.fifo_size = 5 * SZ_1K,
	.formats = mt8173_formats,
	.num_formats = ARRAY_SIZE(mt8173_formats),
	};

	static const struct mtk_disp_rdma_data mt8195_rdma_driver_data = {
	.fifo_size = 1920,
	.formats = mt8173_formats,
	.num_formats = ARRAY_SIZE(mt8173_formats),
	};

	static const struct of_device_id mtk_disp_rdma_driver_dt_match[] = {
	{ .compatible = "mediatek,mt2701-disp-rdma",
	.data = &mt2701_rdma_driver_data},
	{ .compatible = "mediatek,mt8173-disp-rdma",
	.data = &mt8173_rdma_driver_data},
	{ .compatible = "mediatek,mt8183-disp-rdma",
	.data = &mt8183_rdma_driver_data},
	{ .compatible = "mediatek,mt8195-disp-rdma",
	.data = &mt8195_rdma_driver_data},
	{},
	};
	MODULE_DEVICE_TABLE(of, mtk_disp_rdma_driver_dt_match);

	struct platform_driver mtk_disp_rdma_driver = {
	.probe = mtk_disp_rdma_probe,
	.remove_new = mtk_disp_rdma_remove,
	.driver = {
	.name = "mediatek-disp-rdma",
	.owner = THIS_MODULE,
	.of_match_table = mtk_disp_rdma_driver_dt_match,
	},
	};