drm/starfive: Add StarFive drm driver

Add starfive DRM Display driver framework

Signed-off-by: jack.zhu <jack.zhu@starfivetech.com>
Signed-off-by: keith.zhao <keith.zhao@starfivetech.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>

21 files changed, 3394 insertions, 0 deletions

diff --git a/drivers/cache/sifive_ccache.c b/drivers/cache/sifive_ccache.c
index 89ed6cd6b059..191f3b60b628 100644
--- a/drivers/cache/sifive_ccache.c
+++ b/drivers/cache/sifive_ccache.c
@@ -159,6 +159,12 @@ static void ccache_flush_range(phys_addr_t start, size_t len)
 	}
 }
 
+void sifive_ccache_flush_range(phys_addr_t start, size_t len)
+{
+	ccache_flush_range(start, len);
+}
+EXPORT_SYMBOL_GPL(sifive_ccache_flush_range);
+
 static const struct riscv_nonstd_cache_ops ccache_mgmt_ops __initconst = {
 	.wback = &ccache_flush_range,
 	.inv = &ccache_flush_range,
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index c7edba18a6f0..129d64e62fda 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -326,6 +326,8 @@ source "drivers/gpu/drm/renesas/Kconfig"
 
 source "drivers/gpu/drm/sun4i/Kconfig"
 
+source "drivers/gpu/drm/starfive/Kconfig"
+
 source "drivers/gpu/drm/omapdrm/Kconfig"
 
 source "drivers/gpu/drm/tilcdc/Kconfig"
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 104b42df2e95..c9617f005641 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -153,6 +153,7 @@ obj-$(CONFIG_DRM_ATMEL_HLCDC)	+= atmel-hlcdc/
 obj-y			+= renesas/
 obj-y			+= omapdrm/
 obj-$(CONFIG_DRM_SUN4I) += sun4i/
+obj-$(CONFIG_DRM_STARFIVE) += starfive/
 obj-y			+= tilcdc/
 obj-$(CONFIG_DRM_QXL) += qxl/
 obj-$(CONFIG_DRM_VIRTIO_GPU) += virtio/
diff --git a/drivers/gpu/drm/starfive/Kconfig b/drivers/gpu/drm/starfive/Kconfig
new file mode 100644
index 000000000000..99181d43c8f0
--- /dev/null
+++ b/drivers/gpu/drm/starfive/Kconfig
@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2021 StarFive Technology Co., Ltd.
+
+config DRM_STARFIVE
+	tristate "DRM Support for StarFive SoCs"
+	depends on DRM
+	depends on SIFIVE_CCACHE && RISCV_NONSTANDARD_CACHE_OPS
+	depends on SOC_STARFIVE || COMPILE_TEST
+	select DRM_GEM_DMA_HELPER
+	select DRM_KMS_HELPER
+	select DRM_MIPI_DSI
+	select DRM_PANEL
+	help
+	  Choose this option if you have a StarFive SoCs.
+	  The module will be called starfive-drm
+	  This driver provides kernel mode setting and
+	  buffer management to userspace.
diff --git a/drivers/gpu/drm/starfive/Makefile b/drivers/gpu/drm/starfive/Makefile
new file mode 100644
index 000000000000..8ef9e5f469fd
--- /dev/null
+++ b/drivers/gpu/drm/starfive/Makefile
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2021 StarFive Technology Co., Ltd.
+#
+starfive-drm-y := starfive_drm_drv.o \
+		  starfive_drm_gem.o \
+		  starfive_drm_crtc.o \
+		  starfive_drm_encoder.o \
+		  starfive_drm_plane.o \
+		  starfive_drm_lcdc.o \
+		  starfive_drm_vpp.o
+
+obj-$(CONFIG_DRM_STARFIVE) += starfive-drm.o
diff --git a/drivers/gpu/drm/starfive/README.txt b/drivers/gpu/drm/starfive/README.txt
new file mode 100644
index 000000000000..dadec80c98bf
--- /dev/null
+++ b/drivers/gpu/drm/starfive/README.txt
@@ -0,0 +1,56 @@
+Display Subsystem:(default FBdev)
+
+Steps switch to DRM:
+1、Disable fbdev,close below config items：
+CONFIG_FB_STARFIVE=y
+CONFIG_FB_STARFIVE_HDMI_TDA998X=y
+CONFIG_FB_STARFIVE_VIDEO=y
+
+2、open DRM hdmi pipeline,enable items:
+CONFIG_DRM_I2C_NXP_TDA998X=y
+CONFIG_DRM_I2C_NXP_TDA9950=y
+CONFIG_DRM_STARFIVE=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+
+Precautions：when use DRM hdmi pipeline,please make sure CONFIG_DRM_STARFIVE_MIPI_DSI is disable ,
+			 or will cause color abnormal.
+
+3、open DRM mipi pipeline
+
+enable items:
+	CONFIG_PHY_M31_DPHY_RX0=y
+	CONFIG_DRM_STARFIVE_MIPI_DSI=y
+
+
+change jh7100.dtsi display-encoder as below：
+
+	display-encoder {
+		compatible = "starfive,display-encoder";
+		encoder-type = <6>; //2-TMDS, 3-LVDS, 6-DSI, 8-DPI
+		status = "okay";
+
+		ports {
+			port@0 {
+				endpoint {
+					remote-endpoint = <&dsi_out_port>;
+				};
+			};
+
+			port@1 {
+				endpoint {
+					remote-endpoint = <&crtc_0_out>;
+				};
+			};
+		};
+	};
+
+install libdrm:
+make buildroot_initramfs-menuconfig
+choose:
+BR2_PACKAGE_LIBDRM=y
+BR2_PACKAGE_LIBDRM_RADEON=y
+BR2_PACKAGE_LIBDRM_AMDGPU=y
+BR2_PACKAGE_LIBDRM_NOUVEAU=y
+BR2_PACKAGE_LIBDRM_ETNAVIV=y
+BR2_PACKAGE_LIBDRM_INSTALL_TESTS=y
+
diff --git a/drivers/gpu/drm/starfive/starfive_drm_crtc.c b/drivers/gpu/drm/starfive/starfive_drm_crtc.c
new file mode 100644
index 000000000000..64907cc8f66d
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_crtc.c
@@ -0,0 +1,511 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/delay.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_fb_dma_helper.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+#include <drm/drm_gem_atomic_helper.h>
+#include "starfive_drm_drv.h"
+#include "starfive_drm_crtc.h"
+#include "starfive_drm_plane.h"
+#include "starfive_drm_lcdc.h"
+#include "starfive_drm_vpp.h"
+//#include <video/sys_comm_regs.h>
+
+static inline struct drm_encoder *
+starfive_head_atom_get_encoder(struct starfive_crtc *sf_crtc)
+{
+	struct drm_encoder *encoder = NULL;
+
+	/* We only ever have a single encoder */
+	drm_for_each_encoder_mask(encoder, sf_crtc->crtc.dev,
+				  sf_crtc->crtc.state->encoder_mask)
+		break;
+
+	return encoder;
+}
+
+static int ddrfmt_to_ppfmt(struct starfive_crtc *sf_crtc)
+{
+	int ddrfmt = sf_crtc->ddr_format;
+	int ret = 0;
+
+	sf_crtc->lcdcfmt = WIN_FMT_XRGB8888; //lcdc default used
+	sf_crtc->pp_conn_lcdc = 1;//default config
+	switch (ddrfmt) {
+	case DRM_FORMAT_UYVY:
+		sf_crtc->vpp_format = COLOR_YUV422_UYVY;
+		break;
+	case DRM_FORMAT_VYUY:
+		sf_crtc->vpp_format = COLOR_YUV422_VYUY;
+		break;
+	case DRM_FORMAT_YUYV:
+		sf_crtc->vpp_format = COLOR_YUV422_YUYV;
+		break;
+	case DRM_FORMAT_YVYU:
+		sf_crtc->vpp_format = COLOR_YUV422_YVYU;
+		break;
+	case DRM_FORMAT_YUV420:
+		sf_crtc->vpp_format = COLOR_YUV420P;
+		break;
+	case DRM_FORMAT_NV21:
+		sf_crtc->vpp_format = COLOR_YUV420_NV21;
+		break;
+	case DRM_FORMAT_NV12:
+		sf_crtc->vpp_format = COLOR_YUV420_NV12;
+		break;
+	case DRM_FORMAT_ARGB8888:
+		sf_crtc->vpp_format = COLOR_RGB888_ARGB;
+		break;
+	case DRM_FORMAT_ABGR8888:
+		sf_crtc->vpp_format = COLOR_RGB888_ABGR;
+		break;
+	case DRM_FORMAT_RGBA8888:
+		sf_crtc->vpp_format = COLOR_RGB888_RGBA;
+		break;
+	case DRM_FORMAT_BGRA8888:
+		sf_crtc->vpp_format = COLOR_RGB888_BGRA;
+		break;
+	case DRM_FORMAT_RGB565:
+		sf_crtc->vpp_format = COLOR_RGB565;
+		//sf_crtc->lcdcfmt = WIN_FMT_RGB565;
+		//this format no need pp, lcdc can direct read ddr buff
+		//sf_crtc->pp_conn_lcdc = -1;
+		break;
+	case DRM_FORMAT_XRGB1555:
+		sf_crtc->lcdcfmt = WIN_FMT_XRGB1555;
+		sf_crtc->pp_conn_lcdc = -1;//this format no need pp, lcdc can direct read ddr buff;
+		break;
+	case DRM_FORMAT_XRGB4444:
+		sf_crtc->lcdcfmt = WIN_FMT_XRGB4444;
+		sf_crtc->pp_conn_lcdc = -1;//this format no need pp, lcdc can direct read ddr buff;
+		break;
+
+	default:
+		ret = -1;
+		break;
+	}
+
+	return ret;
+}
+
+void starfive_crtc_hw_config_simple(struct starfive_crtc *starfive_crtc)
+{
+}
+
+static void starfive_crtc_destroy(struct drm_crtc *crtc)
+{
+	drm_crtc_cleanup(crtc);
+}
+
+static void starfive_crtc_destroy_state(struct drm_crtc *crtc,
+					struct drm_crtc_state *state)
+{
+	struct starfive_crtc_state *s = to_starfive_crtc_state(state);
+
+	__drm_atomic_helper_crtc_destroy_state(&s->base);
+	kfree(s);
+}
+
+static void starfive_crtc_reset(struct drm_crtc *crtc)
+{
+	struct starfive_crtc_state *crtc_state =
+	kzalloc(sizeof(*crtc_state), GFP_KERNEL);
+
+	if (crtc->state)
+		starfive_crtc_destroy_state(crtc, crtc->state);
+
+	__drm_atomic_helper_crtc_reset(crtc, &crtc_state->base);
+}
+
+static struct drm_crtc_state *starfive_crtc_duplicate_state(struct drm_crtc *crtc)
+{
+	struct starfive_crtc_state *starfive_state;
+
+	starfive_state = kzalloc(sizeof(*starfive_state), GFP_KERNEL);
+	if (!starfive_state)
+		return NULL;
+
+	__drm_atomic_helper_crtc_duplicate_state(crtc, &starfive_state->base);
+
+	return &starfive_state->base;
+}
+
+static int starfive_crtc_enable_vblank(struct drm_crtc *crtc)
+{
+	//need set hw
+	return 0;
+}
+
+static void starfive_crtc_disable_vblank(struct drm_crtc *crtc)
+{
+	//need set hw
+}
+
+static const struct drm_crtc_funcs starfive_crtc_funcs = {
+	.set_config = drm_atomic_helper_set_config,
+	.page_flip = drm_atomic_helper_page_flip,
+	.destroy = starfive_crtc_destroy,
+	.set_property = NULL,
+	.cursor_set = NULL, /* handled by drm_mode_cursor_universal */
+	.cursor_move = NULL, /* handled by drm_mode_cursor_universal */
+	.reset = starfive_crtc_reset,
+	.atomic_duplicate_state = starfive_crtc_duplicate_state,
+	.atomic_destroy_state = starfive_crtc_destroy_state,
+	//.gamma_set = drm_atomic_helper_legacy_gamma_set,
+	.enable_vblank = starfive_crtc_enable_vblank,
+	.disable_vblank = starfive_crtc_disable_vblank,
+	//.set_crc_source = starfive_crtc_set_crc_source,
+	//.get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp,
+	//.verify_crc_source = starfive_crtc_verify_crc_source,
+};
+
+static bool starfive_crtc_mode_fixup(struct drm_crtc *crtc,
+				     const struct drm_display_mode *mode,
+				     struct drm_display_mode *adjusted_mode)
+{
+	/* Nothing to do here, but this callback is mandatory. */
+	return true;
+}
+
+static int starfive_crtc_atomic_check(struct drm_crtc *crtc,
+				      struct drm_atomic_state *state)
+{
+	//state->no_vblank = true;	// hardware without VBLANK interrupt ???
+	struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
+										crtc);
+	crtc_state->no_vblank = true;
+
+	return 0;
+}
+
+static void starfive_crtc_atomic_begin(struct drm_crtc *crtc,
+				       struct drm_atomic_state *old_crtc_state)
+{
+	//starfive_crtc_gamma_set(crtcp, crtc, old_crtc_state);
+}
+
+static void starfive_crtc_atomic_flush(struct drm_crtc *crtc,
+				       struct drm_atomic_state *old_crtc_state)
+{
+	struct starfive_crtc *crtcp = to_starfive_crtc(crtc);
+
+	//starfive_flush_dcache(crtcp->dma_addr, 1920*1080*2);
+	DRM_DEBUG_DRIVER("ddr_format_change [%d], dma_addr_change [%d]\n",
+			 crtcp->ddr_format_change, crtcp->dma_addr_change);
+	if (crtcp->ddr_format_change || crtcp->dma_addr_change) {
+		ddrfmt_to_ppfmt(crtcp);
+		starfive_pp_update(crtcp);
+	} else {
+		DRM_DEBUG_DRIVER("%s with no change\n", __func__);
+	}
+}
+
+static void starfive_crtc_atomic_enable(struct drm_crtc *crtc,
+					struct drm_atomic_state *state)
+{
+	struct starfive_crtc *crtcp = to_starfive_crtc(crtc);
+
+// enable crtc HW
+#ifdef CONFIG_DRM_STARFIVE_MIPI_DSI
+	dsitx_vout_init(crtcp);
+	lcdc_dsi_sel(crtcp);
+#else
+	vout_reset(crtcp);
+#endif
+	ddrfmt_to_ppfmt(crtcp);
+	starfive_pp_enable(crtcp);
+	starfive_lcdc_enable(crtcp);
+	crtcp->is_enabled = true;  // should before
+}
+
+static void starfive_crtc_atomic_disable(struct drm_crtc *crtc,
+					 struct drm_atomic_state *state)
+{
+	struct starfive_crtc *crtcp = to_starfive_crtc(crtc);
+	int pp_id;
+
+	for (pp_id = 0; pp_id < PP_NUM; pp_id++) {
+		if (crtcp->pp[pp_id].inited == 1) {
+			pp_disable_intr(crtcp, pp_id);
+			vout_disable(crtcp); // disable crtc HW
+		}
+	}
+	crtcp->is_enabled = false;
+}
+
+static enum drm_mode_status starfive_crtc_mode_valid(struct drm_crtc *crtc,
+						     const struct drm_display_mode *mode)
+{
+	int refresh = drm_mode_vrefresh(mode);
+
+	if (refresh > 60) //lcdc miss support 60+ fps
+		return MODE_BAD;
+	else
+		return MODE_OK;
+}
+
+static const struct drm_crtc_helper_funcs starfive_crtc_helper_funcs = {
+	.mode_fixup = starfive_crtc_mode_fixup,
+	.atomic_check = starfive_crtc_atomic_check,
+	.atomic_begin = starfive_crtc_atomic_begin,
+	.atomic_flush = starfive_crtc_atomic_flush,
+	.atomic_enable = starfive_crtc_atomic_enable,
+	.atomic_disable = starfive_crtc_atomic_disable,
+	.mode_valid = starfive_crtc_mode_valid,
+};
+
+static int starfive_crtc_create(struct drm_device *drm_dev,
+				struct starfive_crtc *starfive_crtc,
+				const struct drm_crtc_funcs *crtc_funcs,
+				const struct drm_crtc_helper_funcs *crtc_helper_funcs)
+{
+	struct drm_crtc *crtc = &starfive_crtc->crtc;
+	struct device *dev = drm_dev->dev;
+	struct device_node *port;
+	int ret;
+
+	starfive_crtc->planes = devm_kzalloc(dev, sizeof(struct drm_plane), GFP_KERNEL);
+	ret = starfive_plane_init(drm_dev, starfive_crtc, DRM_PLANE_TYPE_PRIMARY);
+	if (ret) {
+		dev_err(drm_dev->dev, "failed to construct primary plane\n");
+		return ret;
+	}
+
+	drm_crtc_init_with_planes(drm_dev, crtc, starfive_crtc->planes, NULL,
+				  crtc_funcs, NULL);
+	drm_crtc_helper_add(crtc, crtc_helper_funcs);
+	port = of_get_child_by_name(starfive_crtc->dev->of_node, "port");
+	if (!port) {
+		DRM_ERROR("no port node found in %s\n", dev->of_node->full_name);
+		ret = -ENOENT;
+	}
+
+	crtc->port = port;
+	return ret;
+}
+
+static int starfive_crtc_get_memres(struct platform_device *pdev, struct starfive_crtc *sf_crtc)
+{
+	static const char *const mem_res_name[] = {
+		"lcdc", "vpp0", "vpp1", "vpp2", "clk", "rst", "sys"
+	};
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mem_res_name); i++) {
+		const char *name = mem_res_name[i];
+		void __iomem *regs = devm_platform_ioremap_resource_byname(pdev, name);
+
+		if (IS_ERR(regs))
+			return PTR_ERR(regs);
+
+		if (!strcmp(name, "lcdc"))
+			sf_crtc->base_lcdc = regs;
+		else if (!strcmp(name, "vpp0"))
+			sf_crtc->base_vpp0 = regs;
+		else if (!strcmp(name, "vpp1"))
+			sf_crtc->base_vpp1 = regs;
+		else if (!strcmp(name, "vpp2"))
+			sf_crtc->base_vpp2 = regs;
+		else if (!strcmp(name, "clk"))
+			sf_crtc->base_clk = regs;
+		else if (!strcmp(name, "rst"))
+			sf_crtc->base_rst = regs;
+		else if (!strcmp(name, "sys"))
+			sf_crtc->base_syscfg = regs;
+		else
+			dev_err(&pdev->dev, "Could not match resource name\n");
+	}
+
+	return 0;
+}
+
+static int starfive_parse_dt(struct device *dev, struct starfive_crtc *sf_crtc)
+{
+	int ret;
+	struct device_node *np = dev->of_node;
+	struct device_node *child;
+	int pp_num = 0;
+
+	if (!np)
+		return -EINVAL;
+
+	sf_crtc->pp = devm_kzalloc(dev, sizeof(struct pp_mode) * PP_NUM, GFP_KERNEL);
+	if (!sf_crtc->pp)
+		return -ENOMEM;
+
+	for_each_child_of_node(np, child) {
+		if (of_property_read_u32(child, "pp-id", &pp_num)) {
+			ret = -EINVAL;
+			continue;
+		}
+		if (pp_num >= PP_NUM)
+			dev_err(dev, " pp-id number %d is not support!\n", pp_num);
+
+		sf_crtc->pp[pp_num].pp_id = pp_num;
+		sf_crtc->pp[pp_num].bus_out = of_property_read_bool(child, "sys-bus-out");
+		sf_crtc->pp[pp_num].fifo_out = of_property_read_bool(child, "fifo-out");
+		if (of_property_read_u32(child, "src-format", &sf_crtc->pp[pp_num].src.format)) {
+			dev_err(dev, "Missing src-format property in the DT.\n");
+			ret = -EINVAL;
+		}
+		if (of_property_read_u32(child, "src-width", &sf_crtc->pp[pp_num].src.width)) {
+			dev_err(dev, "Missing src-width property in the DT. w %d\n",
+				sf_crtc->pp[pp_num].src.width);
+			ret = -EINVAL;
+		}
+		if (of_property_read_u32(child, "src-height", &sf_crtc->pp[pp_num].src.height)) {
+			dev_err(dev, "Missing src-height property in the DT.\n");
+			ret = -EINVAL;
+		}
+		if (of_property_read_u32(child, "dst-format", &sf_crtc->pp[pp_num].dst.format)) {
+			dev_err(dev, "Missing dst-format property in the DT.\n");
+			ret = -EINVAL;
+		}
+		if (of_property_read_u32(child, "dst-width", &sf_crtc->pp[pp_num].dst.width)) {
+			dev_err(dev, "Missing dst-width property in the DT.\n");
+			ret = -EINVAL;
+		}
+		if (of_property_read_u32(child, "dst-height", &sf_crtc->pp[pp_num].dst.height)) {
+			dev_err(dev, "Missing dst-height property in the DT.\n");
+			ret = -EINVAL;
+		}
+		sf_crtc->pp[pp_num].inited = 1;
+	}
+
+	return ret;
+}
+
+static int starfive_crtc_bind(struct device *dev, struct device *master, void *data)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct drm_device *drm_dev = data;
+	struct starfive_crtc *crtcp;
+	int ret;
+
+	crtcp = devm_kzalloc(dev, sizeof(*crtcp), GFP_KERNEL);
+	if (!crtcp)
+		return -ENOMEM;
+
+	crtcp->dev = dev;
+	crtcp->drm_dev = drm_dev;
+	dev_set_drvdata(dev, crtcp);
+
+	spin_lock_init(&crtcp->reg_lock);
+
+	ret = starfive_crtc_get_memres(pdev, crtcp);
+	if (ret)
+		return ret;
+
+	crtcp->clk_disp_axi = devm_clk_get(dev, "disp_axi");
+	if (IS_ERR(crtcp->clk_disp_axi))
+		return dev_err_probe(dev, PTR_ERR(crtcp->clk_disp_axi),
+				     "error getting axi clock\n");
+
+	crtcp->clk_vout_src = devm_clk_get(dev, "disp_axi");
+	if (IS_ERR(crtcp->clk_vout_src))
+		return dev_err_probe(dev, PTR_ERR(crtcp->clk_vout_src),
+				     "error getting vout clock\n");
+
+	crtcp->rst_disp_axi = devm_reset_control_get_exclusive(dev, "disp_axi");
+	if (IS_ERR(crtcp->rst_disp_axi))
+		return dev_err_probe(dev, PTR_ERR(crtcp->rst_disp_axi),
+				     "error getting axi reset\n");
+
+	crtcp->rst_vout_src = devm_reset_control_get_exclusive(dev, "vout_src");
+	if (IS_ERR(crtcp->rst_vout_src))
+		return dev_err_probe(dev, PTR_ERR(crtcp->rst_vout_src),
+				     "error getting vout reset\n");
+
+	ret = starfive_parse_dt(dev, crtcp);
+
+	crtcp->pp_conn_lcdc = starfive_pp_get_2lcdc_id(crtcp);
+
+	crtcp->lcdc_irq = platform_get_irq_byname(pdev, "lcdc_irq");
+	if (crtcp->lcdc_irq < 0)
+		return dev_err_probe(dev, crtcp->lcdc_irq, "error getting lcdc irq\n");
+
+	crtcp->vpp1_irq = platform_get_irq_byname(pdev, "vpp1_irq");
+	if (crtcp->vpp1_irq < 0)
+		return dev_err_probe(dev, crtcp->vpp1_irq, "error getting vpp1 irq\n");
+
+	ret = devm_request_irq(&pdev->dev, crtcp->lcdc_irq, lcdc_isr_handler, 0,
+			       "sf_lcdc", crtcp);
+	if (ret)
+		return dev_err_probe(dev, ret, "error requesting irq %d\n", crtcp->lcdc_irq);
+
+	ret = devm_request_irq(&pdev->dev, crtcp->vpp1_irq, vpp1_isr_handler, 0,
+			       "sf_vpp1", crtcp);
+	if (ret)
+		return dev_err_probe(dev, ret, "error requesting irq %d\n", crtcp->vpp1_irq);
+
+	ret = starfive_crtc_create(drm_dev, crtcp,
+				   &starfive_crtc_funcs,
+				   &starfive_crtc_helper_funcs);
+	if (ret)
+		return ret;
+
+	crtcp->is_enabled = false;
+
+	/* starfive_set_crtc_possible_masks(drm_dev, crtcp); */
+
+	/*
+	ret = drm_self_refresh_helper_init(crtcp);
+	if (ret)
+		DRM_DEV_DEBUG_KMS(crtcp->dev,
+			"Failed to init %s with SR helpers %d, ignoring\n",
+			crtcp->name, ret);
+	*/
+
+	return 0;
+}
+
+static void starfive_crtc_unbind(struct device *dev, struct device *master, void *data)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct starfive_crtc *crtcp = dev_get_drvdata(dev);
+
+	drm_crtc_cleanup(&crtcp->crtc);
+	platform_set_drvdata(pdev, NULL);
+}
+
+static const struct component_ops starfive_crtc_component_ops = {
+	.bind   = starfive_crtc_bind,
+	.unbind = starfive_crtc_unbind,
+};
+
+static const struct of_device_id starfive_crtc_driver_dt_match[] = {
+	{ .compatible = "starfive,jh7100-crtc" },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, starfive_crtc_driver_dt_match);
+
+static int starfive_crtc_probe(struct platform_device *pdev)
+{
+	return component_add(&pdev->dev, &starfive_crtc_component_ops);
+}
+
+static int starfive_crtc_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &starfive_crtc_component_ops);
+	return 0;
+}
+
+struct platform_driver starfive_crtc_driver = {
+	.probe = starfive_crtc_probe,
+	.remove = starfive_crtc_remove,
+	.driver = {
+		.name = "starfive-crtc",
+		.of_match_table = of_match_ptr(starfive_crtc_driver_dt_match),
+	},
+};
diff --git a/drivers/gpu/drm/starfive/starfive_drm_crtc.h b/drivers/gpu/drm/starfive/starfive_drm_crtc.h
new file mode 100644
index 000000000000..b04706ae8282
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_crtc.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#ifndef _STARFIVE_DRM_CRTC_H
+#define _STARFIVE_DRM_CRTC_H
+#include <drm/drm_crtc.h>
+
+enum COLOR_FORMAT {
+	COLOR_YUV422_UYVY = 0,  //00={Y1,V0,Y0,U0}
+	COLOR_YUV422_VYUY = 1,  //01={Y1,U0,Y0,V0}
+	COLOR_YUV422_YUYV = 2,  //10={V0,Y1,U0,Y0}
+	COLOR_YUV422_YVYU = 3,  //11={U0,Y1,V0,Y0}
+
+	COLOR_YUV420P,
+	COLOR_YUV420_NV21,
+	COLOR_YUV420_NV12,
+
+	COLOR_RGB888_ARGB,
+	COLOR_RGB888_ABGR,
+	COLOR_RGB888_RGBA,
+	COLOR_RGB888_BGRA,
+	COLOR_RGB565,
+};
+
+struct starfive_crtc_state {
+	struct drm_crtc_state base;
+};
+
+#define to_starfive_crtc_state(s) \
+		container_of(s, struct starfive_crtc_state, base)
+
+struct starfive_crtc {
+	struct drm_crtc		crtc;
+	struct device		*dev;
+	struct drm_device	*drm_dev;
+	bool is_enabled;
+
+	void __iomem	*base_clk;	// 0x12240000
+	void __iomem	*base_rst;	// 0x12250000
+	void __iomem	*base_syscfg;	// 0x12260000
+	void __iomem	*base_vpp0;	// 0x12040000
+	void __iomem	*base_vpp1;	// 0x12080000
+	void __iomem	*base_vpp2;	// 0x120c0000
+	void __iomem	*base_lcdc;	// 0x12000000
+
+	struct clk *clk_disp_axi;
+	struct clk *clk_vout_src;
+
+	struct reset_control *rst_disp_axi;
+	struct reset_control *rst_vout_src;
+
+	int		lcdc_irq;
+	int		vpp0_irq;
+	int		vpp1_irq;
+	int		vpp2_irq;
+
+	struct pp_mode	*pp;
+
+	int		win_num;
+	int		pp_conn_lcdc;
+	unsigned int	ddr_format;
+	bool		ddr_format_change;
+	enum		COLOR_FORMAT vpp_format;
+	int		lcdcfmt;
+
+	/* one time only one process allowed to config the register */
+	spinlock_t	reg_lock;
+
+	struct drm_plane	*planes;
+
+	u8		lut_r[256];
+	u8		lut_g[256];
+	u8		lut_b[256];
+
+	bool		gamma_lut;
+	dma_addr_t	dma_addr;
+	bool		dma_addr_change;
+	size_t		size;
+};
+
+#define to_starfive_crtc(x) container_of(x, struct starfive_crtc, crtc)
+
+void starfive_crtc_hw_config_simple(struct starfive_crtc *starfive_crtc);
+
+#endif /* _STARFIVE_DRM_CRTC_H */
diff --git a/drivers/gpu/drm/starfive/starfive_drm_drv.c b/drivers/gpu/drm/starfive/starfive_drm_drv.c
new file mode 100644
index 000000000000..11171a6cf804
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_drv.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#include <linux/component.h>
+#include <linux/iommu.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/soc/mediatek/mtk-mmsys.h>
+#include <linux/dma-mapping.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fbdev_generic.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_gem.h>
+#include <drm/drm_gem_dma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+#include "starfive_drm_drv.h"
+#include "starfive_drm_gem.h"
+
+#define DRIVER_NAME	"starfive"
+#define DRIVER_DESC	"starfive Soc DRM"
+#define DRIVER_DATE	"20210519"
+#define DRIVER_MAJOR	1
+#define DRIVER_MINOR	0
+
+static struct drm_framebuffer *
+starfive_drm_mode_fb_create(struct drm_device *dev, struct drm_file *file,
+			    const struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	return drm_gem_fb_create(dev, file, mode_cmd);
+}
+
+static const struct drm_mode_config_funcs starfive_drm_mode_config_funcs = {
+	.fb_create = starfive_drm_mode_fb_create,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
+};
+
+static const struct drm_mode_config_helper_funcs starfive_drm_mode_config_helpers = {
+	.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
+};
+
+static const struct file_operations starfive_drm_driver_fops = {
+	.owner = THIS_MODULE,
+	.open = drm_open,
+	.mmap = starfive_drm_gem_mmap,
+	.poll = drm_poll,
+	.read = drm_read,
+	.unlocked_ioctl = drm_ioctl,
+	.compat_ioctl = drm_compat_ioctl,
+	.release = drm_release,
+};
+
+static struct drm_driver starfive_drm_driver = {
+	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
+	.dumb_create = starfive_drm_gem_dumb_create,
+	.gem_prime_import_sg_table = starfive_drm_gem_prime_import_sg_table,
+	.fops = &starfive_drm_driver_fops,
+	.name = DRIVER_NAME,
+	.desc = DRIVER_DESC,
+	.date = DRIVER_DATE,
+	.major = DRIVER_MAJOR,
+	.minor = DRIVER_MINOR,
+};
+
+static int compare_dev(struct device *dev, void *data)
+{
+	return dev == (struct device *)data;
+}
+
+static void starfive_drm_match_add(struct device *dev,
+				   struct component_match **match,
+				   struct platform_driver *const *drivers,
+				   int count)
+{
+	int i;
+
+	for (i = 0; i < count; i++) {
+		struct device_driver *drv = &drivers[i]->driver;
+		struct device *p = NULL, *d;
+
+		while ((d = platform_find_device_by_driver(p, drv))) {
+			put_device(p);
+			component_match_add(dev, match, compare_dev, d);
+			p = d;
+		}
+		put_device(p);
+	}
+}
+
+static void starfive_cleanup(struct drm_device *ddev)
+{
+	struct starfive_drm_private *private = ddev->dev_private;
+
+	drm_kms_helper_poll_fini(ddev);
+	drm_atomic_helper_shutdown(ddev);
+	drm_mode_config_cleanup(ddev);
+	component_unbind_all(ddev->dev, ddev);
+	kfree(private);
+	ddev->dev_private = NULL;
+}
+
+static int starfive_drm_bind(struct device *dev)
+{
+	struct drm_device *drm_dev;
+	struct starfive_drm_private *private;
+	int ret;
+
+	drm_dev = drm_dev_alloc(&starfive_drm_driver, dev);
+	if (IS_ERR(drm_dev))
+		return PTR_ERR(drm_dev);
+
+	dev_set_drvdata(dev, drm_dev);
+
+	private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
+	if (!private) {
+		ret = -ENOMEM;
+		goto err_free;
+	}
+
+	drm_dev->dev_private = private;
+
+	/*
+	ret = starfive_drm_init_iommu(drm_dev);
+	if (ret)
+		goto err_free;
+	*/
+
+	ret = drmm_mode_config_init(drm_dev);
+	if (ret)
+		goto err_free;
+
+	drm_dev->mode_config.min_width = 64;
+	drm_dev->mode_config.min_height = 64;
+
+	/*
+	 * set max width and height as default value(4096x4096).
+	 * this value would be used to check framebuffer size limitation
+	 * at drm_mode_addfb().
+	 */
+	drm_dev->mode_config.max_width = 4096;
+	drm_dev->mode_config.max_height = 4096;
+	drm_dev->mode_config.funcs = &starfive_drm_mode_config_funcs;
+	drm_dev->mode_config.helper_private = &starfive_drm_mode_config_helpers;
+	drm_dev->mode_config.async_page_flip = 1;
+
+	ret = component_bind_all(dev, drm_dev);
+	if (ret)
+		goto err_free;
+
+	ret = drm_vblank_init(drm_dev, drm_dev->mode_config.num_crtc);
+	if (ret)
+		goto err_cleanup;
+
+	drm_mode_config_reset(drm_dev);
+
+	/* init kms poll for handling hpd */
+	drm_kms_helper_poll_init(drm_dev);
+
+	ret = drm_dev_register(drm_dev, 0);
+	if (ret)
+		goto err_cleanup;
+#ifdef CONFIG_FRAMEBUFFER_CONSOLE
+	drm_fbdev_generic_setup(drm_dev, 16);
+#endif
+	return 0;
+
+err_cleanup:
+	starfive_cleanup(drm_dev);
+err_free:
+	drm_dev_put(drm_dev);
+	return ret;
+}
+
+static void starfive_drm_unbind(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
+	drm_dev_unregister(drm_dev);
+}
+
+static const struct component_master_ops starfive_drm_ops = {
+	.bind = starfive_drm_bind,
+	.unbind = starfive_drm_unbind,
+};
+
+static struct platform_driver * const starfive_component_drivers[] = {
+	&starfive_crtc_driver,
+#ifdef CONFIG_DRM_STARFIVE_MIPI_DSI
+	&starfive_dsi_platform_driver,
+#endif
+	&starfive_encoder_driver,
+};
+
+static int starfive_drm_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct component_match *match = NULL;
+
+	starfive_drm_match_add(dev, &match,
+			       starfive_component_drivers,
+			       ARRAY_SIZE(starfive_component_drivers));
+	if (IS_ERR(match))
+		return PTR_ERR(match);
+
+	return component_master_add_with_match(dev, &starfive_drm_ops, match);
+}
+
+static int starfive_drm_remove(struct platform_device *pdev)
+{
+	component_master_del(&pdev->dev, &starfive_drm_ops);
+	return 0;
+}
+
+static const struct of_device_id starfive_drm_dt_ids[] = {
+	{ .compatible = "starfive,display-subsystem" },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, starfive_drm_dt_ids);
+
+static struct platform_driver starfive_drm_platform_driver = {
+	.probe	= starfive_drm_probe,
+	.remove	= starfive_drm_remove,
+	.driver	= {
+		.name		= "starfive-drm",
+		.of_match_table	= starfive_drm_dt_ids,
+		//.pm     = &starfive_drm_pm_ops,
+	},
+};
+
+static int __init starfive_drm_init(void)
+{
+	int ret;
+
+	ret = platform_register_drivers(starfive_component_drivers,
+					ARRAY_SIZE(starfive_component_drivers));
+	if (ret)
+		return ret;
+
+	return platform_driver_register(&starfive_drm_platform_driver);
+}
+
+static void __exit starfive_drm_exit(void)
+{
+	platform_unregister_drivers(starfive_component_drivers,
+				    ARRAY_SIZE(starfive_component_drivers));
+	platform_driver_unregister(&starfive_drm_platform_driver);
+}
+
+module_init(starfive_drm_init);
+module_exit(starfive_drm_exit);
+
+MODULE_AUTHOR("StarFive <StarFive@starfivetech.com>");
+MODULE_DESCRIPTION("StarFive SoC DRM driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/starfive/starfive_drm_drv.h b/drivers/gpu/drm/starfive/starfive_drm_drv.h
new file mode 100644
index 000000000000..b965fa5f7252
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_drv.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#ifndef _STARFIVE_DRM_DRV_H
+#define _STARFIVE_DRM_DRV_H
+
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_gem.h>
+#include <linux/module.h>
+#include <linux/component.h>
+
+struct starfive_drm_private {
+	struct drm_fb_helper fbdev_helper;
+	struct drm_gem_object *fbdev_bo;
+	struct mutex mm_lock;
+	struct drm_mm mm;
+};
+
+extern struct platform_driver starfive_crtc_driver;
+extern struct platform_driver starfive_encoder_driver;
+extern struct platform_driver starfive_dsi_platform_driver;
+
+#endif /* _STARFIVE_DRM_DRV_H_ */
diff --git a/drivers/gpu/drm/starfive/starfive_drm_encoder.c b/drivers/gpu/drm/starfive/starfive_drm_encoder.c
new file mode 100644
index 000000000000..225781a7df91
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_encoder.c
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/platform_device.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_fb_dma_helper.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+#include <drm/drm_of.h>
+#include "starfive_drm_drv.h"
+#include "starfive_drm_encoder.h"
+
+static void starfive_encoder_destroy(struct drm_encoder *encoder)
+{
+	drm_encoder_cleanup(encoder);
+	kfree(encoder);
+}
+
+static const struct drm_encoder_funcs starfive_encoder_funcs = {
+	.destroy = starfive_encoder_destroy,
+};
+
+static int starfive_encoder_bind(struct device *dev, struct device *master, void *data)
+{
+	struct drm_device *drm_dev = data;
+	struct device_node *np = dev->of_node;
+	struct starfive_encoder *encoderp;
+	int ret;
+	struct drm_panel *tmp_panel;
+	struct drm_bridge *tmp_bridge;
+	u32 crtcs = 0;
+
+	encoderp = devm_kzalloc(dev, sizeof(*encoderp), GFP_KERNEL);
+	if (!encoderp)
+		return -ENOMEM;
+
+	encoderp->dev = dev;
+	encoderp->drm_dev = drm_dev;
+	dev_set_drvdata(dev, encoderp);
+
+	if (dev->of_node) {
+		crtcs = drm_of_find_possible_crtcs(drm_dev, dev->of_node);
+
+		if (of_property_read_u32(np, "encoder-type", &encoderp->encoder_type)) {
+			DRM_ERROR("Missing encoder-type property in the DT.\n");
+			encoderp->encoder_type = DRM_MODE_ENCODER_TMDS;
+		}
+	}
+
+	/* If no CRTCs were found, fall back to our old behaviour */
+	if (crtcs == 0) {
+		dev_warn(dev, "Falling back to first CRTC\n");
+		crtcs = 1 << 0;
+	}
+
+	encoderp->encoder.possible_crtcs = crtcs;
+
+	ret = drm_encoder_init(drm_dev, &encoderp->encoder,
+			       &starfive_encoder_funcs,
+			       encoderp->encoder_type, NULL);
+	if (ret)
+		return dev_err_probe(dev, ret, "error initializing encoder\n");
+
+	ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
+					  &tmp_panel, &tmp_bridge);
+	if (ret) {
+		dev_err_probe(dev, ret, "endpoint returns %d\n", ret);
+		goto err_bridge;
+	}
+
+	if (tmp_panel)
+		DRM_INFO("found panel on endpoint\n");
+	if (tmp_bridge)
+		DRM_INFO("found bridge on endpoint\n");
+
+	ret = drm_bridge_attach(&encoderp->encoder, tmp_bridge, NULL, 0);
+	if (ret)
+		goto err_bridge;
+
+	return 0;
+
+err_bridge:
+	drm_encoder_cleanup(&encoderp->encoder);
+	return ret;
+}
+
+static void starfive_encoder_unbind(struct device *dev, struct device *master, void *data)
+{
+	struct starfive_encoder *encoderp = dev_get_drvdata(dev);
+
+	starfive_encoder_destroy(&encoderp->encoder);
+}
+
+static const struct component_ops starfive_encoder_component_ops = {
+	.bind   = starfive_encoder_bind,
+	.unbind = starfive_encoder_unbind,
+};
+
+static const struct of_device_id starfive_encoder_driver_dt_match[] = {
+	{ .compatible = "starfive,display-encoder" },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, starfive_encoder_driver_dt_match);
+
+static int starfive_encoder_probe(struct platform_device *pdev)
+{
+	return component_add(&pdev->dev, &starfive_encoder_component_ops);
+}
+
+static int starfive_encoder_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &starfive_encoder_component_ops);
+	return 0;
+}
+
+struct platform_driver starfive_encoder_driver = {
+	.probe = starfive_encoder_probe,
+	.remove = starfive_encoder_remove,
+	.driver = {
+		.name = "display-encoder",
+		.of_match_table = of_match_ptr(starfive_encoder_driver_dt_match),
+	},
+};
diff --git a/drivers/gpu/drm/starfive/starfive_drm_encoder.h b/drivers/gpu/drm/starfive/starfive_drm_encoder.h
new file mode 100644
index 000000000000..5ea21441e502
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_encoder.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#ifndef _STARFIVE_DRM_ENCODER_H
+#define _STARFIVE_DRM_ENCODER_H
+
+struct starfive_encoder {
+	struct drm_encoder	encoder;
+	struct device		*dev;
+	struct drm_device	*drm_dev;
+	bool			is_enabled;
+	int			encoder_type;
+};
+
+#define to_starfive_encoder(x) container_of(x, struct starfive_encoder, encoder)
+
+#endif /* _STARFIVE_DRM_CRTC_H */
diff --git a/drivers/gpu/drm/starfive/starfive_drm_gem.c b/drivers/gpu/drm/starfive/starfive_drm_gem.c
new file mode 100644
index 000000000000..fc6da9275fc9
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_gem.c
@@ -0,0 +1,348 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#include <linux/dma-buf.h>
+#include <linux/iommu.h>
+#include <linux/vmalloc.h>
+#include <drm/drm.h>
+#include <drm/drm_gem.h>
+#include <drm/drm_prime.h>
+#include <drm/drm_vma_manager.h>
+#include <drm/drm_gem_dma_helper.h>
+#include "starfive_drm_drv.h"
+#include "starfive_drm_gem.h"
+
+static const struct drm_gem_object_funcs starfive_gem_object_funcs;
+#if 0
+static const struct vm_operations_struct mmap_mem_ops = {
+#ifdef CONFIG_HAVE_IOREMAP_PROT
+	.access = generic_access_phys
+#endif
+};
+#endif
+
+static int starfive_drm_gem_object_mmap_dma(struct drm_gem_object *obj,
+					    struct vm_area_struct *vma)
+{
+	struct starfive_drm_gem_obj *starfive_obj = to_starfive_gem_obj(obj);
+	struct drm_device *drm = obj->dev;
+
+	return dma_mmap_attrs(drm->dev, vma, starfive_obj->kvaddr,
+			starfive_obj->dma_addr, obj->size, starfive_obj->dma_attrs);
+}
+
+static int starfive_drm_gem_object_mmap(struct drm_gem_object *obj,
+					struct vm_area_struct *vma)
+{
+	int ret;
+
+	/*
+	 * We allocated a struct page table for rk_obj, so clear
+	 * VM_PFNMAP flag that was set by drm_gem_mmap_obj()/drm_gem_mmap().
+	 */
+	vm_flags_clear(vma, VM_PFNMAP);
+	ret = starfive_drm_gem_object_mmap_dma(obj, vma);
+	if (ret)
+		drm_gem_vm_close(vma);
+
+	return ret;
+}
+
+int starfive_drm_gem_mmap_buf(struct drm_gem_object *obj,
+			      struct vm_area_struct *vma)
+{
+	int ret = drm_gem_mmap_obj(obj, obj->size, vma);
+
+	if (ret)
+		return ret;
+
+	return starfive_drm_gem_object_mmap(obj, vma);
+}
+
+int starfive_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+	struct drm_gem_object *obj;
+	int ret;
+
+	ret = drm_gem_mmap(filp, vma);
+	if (ret)
+		return ret;
+
+	obj = vma->vm_private_data;
+
+	/*
+	 * Set vm_pgoff (used as a fake buffer offset by DRM) to 0 and map the
+	 * whole buffer from the start.
+	 */
+	vma->vm_pgoff = 0;
+
+	return starfive_drm_gem_object_mmap(obj, vma);
+}
+
+void starfive_drm_gem_free_object(struct drm_gem_object *obj)
+{
+	struct starfive_drm_gem_obj *starfive_gem = to_starfive_gem_obj(obj);
+	struct drm_device *drm_dev = obj->dev;
+
+	if (starfive_gem->sg)
+		drm_prime_gem_destroy(obj, starfive_gem->sg);
+	else
+		dma_free_attrs(drm_dev->dev, obj->size, starfive_gem->kvaddr,
+			       starfive_gem->dma_addr, starfive_gem->dma_attrs);
+
+	/* release file pointer to gem object. */
+	drm_gem_object_release(obj);
+
+	kfree(starfive_gem);
+}
+
+static struct starfive_drm_gem_obj *
+starfive_drm_gem_alloc_object(struct drm_device *drm, unsigned int size)
+{
+	struct starfive_drm_gem_obj *starfive_obj;
+	struct drm_gem_object *obj;
+	int ret;
+
+	starfive_obj = kzalloc(sizeof(*starfive_obj), GFP_KERNEL);
+	if (!starfive_obj)
+		return ERR_PTR(-ENOMEM);
+
+	obj = &starfive_obj->base;
+	ret = drm_gem_object_init(drm, obj, round_up(size, PAGE_SIZE));
+	if (ret)
+		return ERR_PTR(ret);
+
+	return starfive_obj;
+}
+
+static int starfive_drm_gem_alloc_dma(struct starfive_drm_gem_obj *starfive_obj,
+				      bool alloc_kmap)
+{
+	struct drm_gem_object *obj = &starfive_obj->base;
+	struct drm_device *drm = obj->dev;
+
+	starfive_obj->dma_attrs = DMA_ATTR_WRITE_COMBINE;
+	if (!alloc_kmap)
+		starfive_obj->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
+
+	starfive_obj->kvaddr = dma_alloc_attrs(drm->dev, obj->size,
+					       &starfive_obj->dma_addr, GFP_KERNEL,
+					       starfive_obj->dma_attrs);
+
+	DRM_INFO("kvaddr = 0x%px\n", starfive_obj->kvaddr);
+	DRM_INFO("dma_addr = 0x%llx, size = %lu\n", starfive_obj->dma_addr, obj->size);
+	if (!starfive_obj->kvaddr) {
+		DRM_ERROR("failed to allocate %zu byte dma buffer", obj->size);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static int starfive_drm_gem_alloc_buf(struct starfive_drm_gem_obj *starfive_obj,
+				      bool alloc_kmap)
+{
+	return starfive_drm_gem_alloc_dma(starfive_obj, alloc_kmap);
+}
+
+static void starfive_drm_gem_release_object(struct starfive_drm_gem_obj *starfive_obj)
+{
+	drm_gem_object_release(&starfive_obj->base);
+	kfree(starfive_obj);
+}
+
+static struct starfive_drm_gem_obj *
+starfive_drm_gem_create_object(struct drm_device *drm, unsigned int size,
+			       bool alloc_kmap)
+{
+	struct starfive_drm_gem_obj *starfive_obj;
+	int ret;
+
+	starfive_obj = starfive_drm_gem_alloc_object(drm, size);
+	if (IS_ERR(starfive_obj))
+		return starfive_obj;
+
+	ret = starfive_drm_gem_alloc_buf(starfive_obj, alloc_kmap);
+	if (ret)
+		goto err_free_obj;
+
+	starfive_obj->base.funcs = &starfive_gem_object_funcs;
+
+	return starfive_obj;
+
+err_free_obj:
+	starfive_drm_gem_release_object(starfive_obj);
+	return ERR_PTR(ret);
+}
+
+static struct starfive_drm_gem_obj *
+starfive_drm_gem_create_with_handle(struct drm_file *file_priv,
+				    struct drm_device *drm,
+				    unsigned int size,
+				    unsigned int *handle)
+{
+	struct starfive_drm_gem_obj *starfive_gem;
+	struct drm_gem_object *gem;
+	int ret;
+#ifdef CONFIG_FRAMEBUFFER_CONSOLE
+	//config true, for console display
+	starfive_gem = starfive_drm_gem_create_object(drm, size, true);
+#else
+	starfive_gem = starfive_drm_gem_create_object(drm, size, false);
+#endif
+	if (IS_ERR(starfive_gem))
+		return ERR_CAST(starfive_gem);
+
+	gem = &starfive_gem->base;
+
+	/*
+	 * allocate a id of idr table where the obj is registered
+	 * and handle has the id what user can see.
+	 */
+	ret = drm_gem_handle_create(file_priv, gem, handle);
+	if (ret)
+		goto err_handle_create;
+
+	/* drop reference from allocate - handle holds it now. */
+	drm_gem_object_put(gem);
+
+	return starfive_gem;
+
+err_handle_create:
+	starfive_drm_gem_free_object(gem);
+
+	return ERR_PTR(ret);
+}
+
+int starfive_drm_gem_dumb_create(struct drm_file *file_priv,
+				 struct drm_device *dev,
+				 struct drm_mode_create_dumb *args)
+{
+	struct starfive_drm_gem_obj *starfive_gem;
+
+	args->pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
+	args->size = args->pitch * args->height;
+
+	starfive_gem = starfive_drm_gem_create_with_handle(file_priv, dev,
+							   args->size,
+							   &args->handle);
+
+	return PTR_ERR_OR_ZERO(starfive_gem);
+}
+
+struct sg_table *starfive_drm_gem_prime_get_sg_table(struct drm_gem_object *obj)
+{
+	struct starfive_drm_gem_obj *starfive_obj = to_starfive_gem_obj(obj);
+	struct drm_device *drm = obj->dev;
+	struct sg_table *sgt;
+	int ret;
+
+	if (starfive_obj->pages)
+		return drm_prime_pages_to_sg(obj->dev, starfive_obj->pages,
+					     starfive_obj->num_pages);
+
+	sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
+	if (!sgt)
+		return ERR_PTR(-ENOMEM);
+
+	ret = dma_get_sgtable_attrs(drm->dev, sgt, starfive_obj->kvaddr,
+				    starfive_obj->dma_addr, obj->size,
+				    starfive_obj->dma_attrs);
+	if (ret) {
+		DRM_ERROR("failed to allocate sgt, %d\n", ret);
+		kfree(sgt);
+		return ERR_PTR(ret);
+	}
+
+	return sgt;
+}
+
+static int
+starfive_drm_gem_dma_map_sg(struct drm_device *drm,
+			    struct dma_buf_attachment *attach,
+			    struct sg_table *sg,
+			    struct starfive_drm_gem_obj *starfive_obj)
+{
+	int err;
+
+	err = dma_map_sgtable(drm->dev, sg, DMA_BIDIRECTIONAL, 0);
+	if (err)
+		return err;
+
+	if (drm_prime_get_contiguous_size(sg) < attach->dmabuf->size) {
+		DRM_ERROR("failed to map sg_table to contiguous linear address.\n");
+		dma_unmap_sgtable(drm->dev, sg, DMA_BIDIRECTIONAL, 0);
+		return -EINVAL;
+	}
+
+	starfive_obj->dma_addr = sg_dma_address(sg->sgl);
+	starfive_obj->sg = sg;
+
+	return 0;
+}
+
+struct drm_gem_object *
+starfive_drm_gem_prime_import_sg_table(struct drm_device *drm,
+				       struct dma_buf_attachment *attach,
+				       struct sg_table *sg)
+{
+	struct starfive_drm_gem_obj *starfive_obj;
+	int ret;
+
+	starfive_obj = starfive_drm_gem_alloc_object(drm, attach->dmabuf->size);
+	if (IS_ERR(starfive_obj))
+		return ERR_CAST(starfive_obj);
+
+	ret = starfive_drm_gem_dma_map_sg(drm, attach, sg, starfive_obj);
+	if (ret < 0) {
+		DRM_ERROR("failed to import sg table: %d\n", ret);
+		goto err_free_obj;
+	}
+
+	return &starfive_obj->base;
+
+err_free_obj:
+	starfive_drm_gem_release_object(starfive_obj);
+	return ERR_PTR(ret);
+}
+
+int starfive_drm_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map)
+{
+	struct starfive_drm_gem_obj *starfive_obj = to_starfive_gem_obj(obj);
+
+	if (starfive_obj->pages) {
+		void *vaddr = vmap(starfive_obj->pages, starfive_obj->num_pages, VM_MAP,
+						pgprot_writecombine(PAGE_KERNEL));
+		if (!vaddr)
+			return -ENOMEM;
+		iosys_map_set_vaddr(map, vaddr);
+		return 0;
+	}
+
+	if (starfive_obj->dma_attrs & DMA_ATTR_NO_KERNEL_MAPPING)
+		return -ENOMEM;
+
+	iosys_map_set_vaddr(map, starfive_obj->kvaddr);
+
+	return 0;
+}
+
+void starfive_drm_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map)
+{
+	struct starfive_drm_gem_obj *starfive_obj = to_starfive_gem_obj(obj);
+
+	if (starfive_obj->pages) {
+		vunmap(map->vaddr);
+		return;
+	}
+	/* Nothing to do if allocated by DMA mapping API. */
+}
+
+static const struct drm_gem_object_funcs starfive_gem_object_funcs = {
+	.free		= starfive_drm_gem_free_object,
+	.get_sg_table	= starfive_drm_gem_prime_get_sg_table,
+	.vmap		= starfive_drm_gem_prime_vmap,
+	.vunmap		= starfive_drm_gem_prime_vunmap,
+	.vm_ops		= &drm_gem_dma_vm_ops,
+};
diff --git a/drivers/gpu/drm/starfive/starfive_drm_gem.h b/drivers/gpu/drm/starfive/starfive_drm_gem.h
new file mode 100644
index 000000000000..13a222a26e17
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_gem.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#ifndef _STARFIVE_DRM_GEM_H
+#define _STARFIVE_DRM_GEM_H
+
+#include <drm/drm_gem.h>
+
+struct starfive_drm_gem_obj {
+	struct drm_gem_object	base;
+	//void			*cookie; //mtk
+	void			*kvaddr;
+	dma_addr_t		dma_addr;
+	unsigned long		dma_attrs;
+
+	/* Used when IOMMU is enabled */
+	unsigned long		num_pages;
+	struct sg_table		*sg;
+	struct page		**pages;
+};
+
+#define to_starfive_gem_obj(x)	container_of(x, struct starfive_drm_gem_obj, base)
+
+void starfive_drm_gem_free_object(struct drm_gem_object *obj);
+int starfive_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
+int starfive_drm_gem_mmap_buf(struct drm_gem_object *obj,
+			      struct vm_area_struct *vma);
+int starfive_drm_gem_dumb_create(struct drm_file *file_priv,
+				 struct drm_device *dev,
+				 struct drm_mode_create_dumb *args);
+struct sg_table *starfive_drm_gem_prime_get_sg_table(struct drm_gem_object *obj);
+struct drm_gem_object *
+starfive_drm_gem_prime_import_sg_table(struct drm_device *dev,
+				       struct dma_buf_attachment *attach,
+				       struct sg_table *sg);
+int starfive_drm_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map);
+void starfive_drm_gem_prime_vunmap(struct drm_gem_object *obj, struct iosys_map *map);
+
+#endif /* _STARFIVE_DRM_GEM_H */
diff --git a/drivers/gpu/drm/starfive/starfive_drm_lcdc.c b/drivers/gpu/drm/starfive/starfive_drm_lcdc.c
new file mode 100644
index 000000000000..7e9bcbde3092
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_lcdc.c
@@ -0,0 +1,512 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/units.h>
+#include <drm/drm_crtc.h>
+#include "starfive_drm_lcdc.h"
+#include "starfive_drm_vpp.h"
+
+static u32 sf_fb_clkread32(struct starfive_crtc *sf_crtc, u32 reg)
+{
+	return ioread32(sf_crtc->base_clk + reg);
+}
+
+static void sf_fb_clkwrite32(struct starfive_crtc *sf_crtc, u32 reg, u32 val)
+{
+	iowrite32(val, sf_crtc->base_clk + reg);
+}
+
+static u32 sf_fb_lcdcread32(struct starfive_crtc *sf_crtc, u32 reg)
+{
+	return ioread32(sf_crtc->base_lcdc + reg);
+}
+
+static void sf_fb_lcdcwrite32(struct starfive_crtc *sf_crtc, u32 reg, u32 val)
+{
+	iowrite32(val, sf_crtc->base_lcdc + reg);
+}
+
+static u32 starfive_lcdc_rstread32(struct starfive_crtc *sf_crtc, u32 reg)
+{
+	return ioread32(sf_crtc->base_rst + reg);
+}
+
+static void starfive_lcdc_rstwrite32(struct starfive_crtc *sf_crtc, u32 reg, u32 val)
+{
+	iowrite32(val, sf_crtc->base_rst + reg);
+}
+
+static void lcdc_mode_cfg(struct starfive_crtc *sf_crtc, u32 work_mode, int dot_edge,
+			  int sync_edge, int r2y_bypass, int src_sel, int int_src, int int_freq)
+{
+	u32 lcdc_en = 0x1;
+	u32 cfg = lcdc_en |
+		work_mode << LCDC_WORK_MODE |
+		dot_edge << LCDC_DOTCLK_P |
+		sync_edge << LCDC_HSYNC_P |
+		sync_edge << LCDC_VSYNC_P |
+		0x0 << LCDC_DITHER_EN |
+		r2y_bypass << LCDC_R2Y_BPS |
+		src_sel << LCDC_TV_LCD_PATHSEL |
+		int_src << LCDC_INT_SEL |
+		int_freq << LCDC_INT_FREQ;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_GCTRL, cfg);
+	dev_dbg(sf_crtc->dev, "LCDC WorkMode: 0x%x, LCDC Path: %d\n", work_mode, src_sel);
+}
+
+static void lcdc_timing_cfg(struct starfive_crtc *sf_crtc,
+			    struct drm_crtc_state *state, int vunit)
+{
+	int hpw, hbk, hfp, vpw, vbk, vfp;
+	u32 htiming, vtiming, hvwid;
+
+	//h-sync
+	int hsync_len = state->adjusted_mode.crtc_hsync_end -
+		state->adjusted_mode.crtc_hsync_start;
+	//h-bp
+	int left_margin = state->adjusted_mode.crtc_htotal -
+		state->adjusted_mode.crtc_hsync_end;
+	//h-fp
+	int right_margin = state->adjusted_mode.crtc_hsync_start -
+		state->adjusted_mode.crtc_hdisplay;
+	//v-sync
+	int vsync_len = state->adjusted_mode.crtc_vsync_end -
+		state->adjusted_mode.crtc_vsync_start;
+	//v-bp
+	int upper_margin = state->adjusted_mode.crtc_vtotal -
+		state->adjusted_mode.crtc_vsync_end;
+	//v-fp
+	int lower_margin = state->adjusted_mode.crtc_vsync_start -
+		state->adjusted_mode.crtc_vdisplay;
+
+	hpw = hsync_len - 1;
+	hbk = hsync_len + left_margin;
+	hfp = right_margin;
+	vpw = vsync_len - 1;
+	vbk = vsync_len + upper_margin;
+	vfp = lower_margin;
+
+	dev_dbg(sf_crtc->dev, "%s: h-sync = %d, h-bp = %d, h-fp = %d", __func__,
+		hsync_len, left_margin, right_margin);
+	dev_dbg(sf_crtc->dev, "%s: v-sync = %d, v-bp = %d, v-fp = %d", __func__,
+		vsync_len, upper_margin, lower_margin);
+
+	htiming = hbk | hfp << LCDC_RGB_HFP;
+	vtiming = vbk | vfp << LCDC_RGB_VFP;
+	hvwid = hpw | vpw << LCDC_RGB_VPW | vunit << LCDC_RGB_UNIT;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_RGB_H_TMG, htiming);
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_RGB_V_TMG, vtiming);
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_RGB_W_TMG, hvwid);
+	dev_dbg(sf_crtc->dev, "LCDC HPW: %d, HBK: %d, HFP: %d\n", hpw, hbk, hfp);
+	dev_dbg(sf_crtc->dev, "LCDC VPW: %d, VBK: %d, VFP: %d\n", vpw, vbk, vfp);
+	dev_dbg(sf_crtc->dev, "LCDC V-Unit: %d, 0-HSYNC and 1-dotClk period\n", vunit);
+}
+
+//? background size
+//lcdc_desize_cfg(sf_dev, sf_dev->display_info.xres-1, sf_dev->display_info.yres-1);
+static void lcdc_desize_cfg(struct starfive_crtc *sf_crtc, struct drm_crtc_state *state)
+{
+	int hsize = state->adjusted_mode.crtc_hdisplay - 1;
+	int vsize = state->adjusted_mode.crtc_vdisplay - 1;
+	u32 sizecfg = hsize | vsize << LCDC_BG_VSIZE;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_BACKGROUND, sizecfg);
+	dev_dbg(sf_crtc->dev, "LCDC Dest H-Size: %d, V-Size: %d\n", hsize, vsize);
+}
+
+static void lcdc_rgb_dclk_cfg(struct starfive_crtc *sf_crtc, int dot_clk_sel)
+{
+	u32 cfg = dot_clk_sel << 16;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_RGB_DCLK, cfg);
+	dev_dbg(sf_crtc->dev, "LCDC Dot_clock_output_sel: 0x%x\n", cfg);
+}
+
+// color table
+//win0, no lock transfer
+//win3, no src_sel and addr_mode, 0 assigned to them
+//lcdc_win_cfgA(sf_dev, win_num, sf_dev->display_info.xres-1, sf_dev->display_info.yres-1,
+//		0x1, 0x0, 0x0, 0x1, 0x0, 0x0);
+static void lcdc_win_cfgA(struct starfive_crtc *sf_crtc, struct drm_crtc_state *state,
+			  int win_num, int lay_en, int clor_tab,
+			  int color_en, int addr_mode, int lock)
+{
+	int hsize = state->adjusted_mode.crtc_hdisplay - 1;
+	int vsize = state->adjusted_mode.crtc_vdisplay - 1;
+	int src_sel_v = 1;
+	u32 cfg;
+
+	if (sf_crtc->pp_conn_lcdc < 0)
+		src_sel_v = 0;
+
+	cfg = hsize | vsize << LCDC_WIN_VSIZE | lay_en << LCDC_WIN_EN |
+		clor_tab << LCDC_CC_EN | color_en << LCDC_CK_EN |
+		src_sel_v << LCDC_WIN_ISSEL | addr_mode << LCDC_WIN_PM |
+		lock << LCDC_WIN_CLK;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_WIN0_CFG_A + win_num * 0xC, cfg);
+	dev_dbg(sf_crtc->dev,
+		"LCDC Win%d H-Size: %d, V-Size: %d, lay_en: %d, Src: %d, AddrMode: %d\n",
+		win_num, hsize, vsize, lay_en, src_sel_v, addr_mode);
+}
+
+static void lcdc_win_cfgB(struct starfive_crtc *sf_crtc,
+			  int win_num, int xpos, int ypos, int argb_ord)
+{
+	int win_format = sf_crtc->lcdcfmt;
+	u32 cfg;
+
+#ifdef CONFIG_DRM_STARFIVE_MIPI_DSI
+	argb_ord = 0;
+#else
+	argb_ord = 1;
+#endif
+
+	cfg = xpos |
+		ypos << LCDC_WIN_VPOS |
+		win_format << LCDC_WIN_FMT |
+		argb_ord << LCDC_WIN_ARGB_ORDER;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_WIN0_CFG_B + win_num * 0xC, cfg);
+	dev_dbg(sf_crtc->dev,
+		"LCDC Win%d Xpos: %d, Ypos: %d, win_format: 0x%x, ARGB Order: 0x%x\n",
+		win_num, xpos, ypos, win_format, argb_ord);
+}
+
+//? Color key
+static void lcdc_win_cfgC(struct starfive_crtc *sf_crtc, int win_num, int color_key)
+{
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_WIN0_CFG_C + win_num * 0xC, color_key);
+	dev_dbg(sf_crtc->dev, "LCDC Win%d Color Key: 0x%6x\n", win_num, color_key);
+}
+
+//? hsize
+//lcdc_win_src_size(sf_dev, win_num, sf_dev->display_info.xres-1);
+static void lcdc_win_src_size(struct starfive_crtc *sf_crtc,
+			      struct drm_crtc_state *state, int win_num)
+{
+	int addr, off, winsize, pre_cfg, cfg;
+	int hsize = state->adjusted_mode.crtc_hdisplay - 1;
+
+	switch (win_num) {
+	case 0:
+		addr = LCDC_WIN01_HSIZE;
+		off = 0xfffff000;
+		winsize = hsize;
+		break;
+	case 1:
+		addr = LCDC_WIN01_HSIZE;
+		off = 0xff000fff;
+		winsize = hsize << LCDC_IMG_HSIZE;
+		break;
+	case 2:
+		addr = LCDC_WIN23_HSIZE;
+		off = 0xfffff000;
+		winsize = hsize;
+		break;
+	case 3:
+		addr = LCDC_WIN23_HSIZE;
+		off = 0xff000fff;
+		winsize = hsize << LCDC_IMG_HSIZE;
+		break;
+	case 4:
+		addr = LCDC_WIN45_HSIZE;
+		off = 0xfffff000;
+		winsize = hsize;
+		break;
+	case 5:
+		addr = LCDC_WIN45_HSIZE;
+		off = 0xff000fff;
+		winsize = hsize << LCDC_IMG_HSIZE;
+		break;
+	case 6:
+		addr = LCDC_WIN67_HSIZE;
+		off = 0xfffff000;
+		winsize = hsize;
+		break;
+	case 7:
+		addr = LCDC_WIN67_HSIZE;
+		off = 0xff000fff;
+		winsize = hsize << LCDC_IMG_HSIZE;
+		break;
+	default:
+		addr = LCDC_WIN01_HSIZE;
+		off = 0xfffff000;
+		winsize = hsize;
+		break;
+	}
+	pre_cfg = sf_fb_lcdcread32(sf_crtc, addr) & off;
+	cfg = winsize | pre_cfg;
+	sf_fb_lcdcwrite32(sf_crtc, addr, cfg);
+	dev_dbg(sf_crtc->dev, "LCDC Win%d Src Hsize: %d\n", win_num, hsize);
+}
+
+static void lcdc_alpha_val_cfg(struct starfive_crtc *sf_crtc,
+			       int val1, int val2, int val3, int val4, int sel)
+{
+	u32 val = val1 |
+		val2 << LCDC_ALPHA2 |
+		val3 << LCDC_ALPHA3 |
+		val4 << LCDC_ALPHA4 |
+		sel << LCDC_01_ALPHA_SEL;
+	u32 pre_val = sf_fb_lcdcread32(sf_crtc, LCDC_ALPHA_VALUE) & 0xfffb0000U;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_ALPHA_VALUE, pre_val | val);
+	dev_dbg(sf_crtc->dev, "LCDC Alpha 1: %x, 2: %x, 3: %x, 4: %x\n", val1, val2, val3, val4);
+}
+
+static void lcdc_panel_cfg(struct starfive_crtc *sf_crtc,
+			   int buswid, int depth, int txcycle, int pixpcycle,
+			   int rgb565sel, int rgb888sel)
+{
+	u32 cfg = buswid |
+		depth << LCDC_COLOR_DEP |
+		txcycle << LCDC_TCYCLES |
+		pixpcycle << LCDC_PIXELS |
+		rgb565sel << LCDC_565RGB_SEL |
+		rgb888sel << LCDC_888RGB_SEL;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_PANELDATAFMT, cfg);
+	dev_dbg(sf_crtc->dev, "LCDC bus bit: :%d, pixDep: 0x%x, txCyle: %d, %dpix/cycle, RGB565 2cycle_%d, RGB888 3cycle_%d\n",
+		buswid, depth, txcycle, pixpcycle, rgb565sel, rgb888sel);
+}
+
+//win_num: 0-2
+static void lcdc_win02_addr_cfg(struct starfive_crtc *sf_crtc, int addr0, int addr1)
+{
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_WIN0STARTADDR0 + sf_crtc->win_num * 0x8, addr0);
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_WIN0STARTADDR1 + sf_crtc->win_num * 0x8, addr1);
+	dev_dbg(sf_crtc->dev, "LCDC Win%d Start Addr0: 0x%8x, Addr1: 0x%8x\n",
+		sf_crtc->win_num, addr0, addr1);
+}
+
+void starfive_set_win_addr(struct starfive_crtc *sf_crtc, int addr)
+{
+	lcdc_win02_addr_cfg(sf_crtc, addr, 0x0);
+}
+
+void lcdc_enable_intr(struct starfive_crtc *sf_crtc)
+{
+	u32 cfg = ~(1U << LCDC_OUT_FRAME_END);
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_INT_MSK, cfg);
+}
+
+void lcdc_disable_intr(struct starfive_crtc *sf_crtc)
+{
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_INT_MSK, 0xff);
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_INT_CLR, 0xff);
+}
+
+int lcdc_win_sel(struct starfive_crtc *sf_crtc, enum lcdc_in_mode sel)
+{
+	int win_num;
+
+	switch (sel) {
+	case LCDC_IN_LCD_AXI:
+		win_num = LCDC_WIN_0;
+		break;
+	case LCDC_IN_VPP2:
+		win_num = LCDC_WIN_0;
+		break;
+	case LCDC_IN_VPP1:
+		win_num = LCDC_WIN_2;
+		break;
+	case LCDC_IN_VPP0:
+		win_num = LCDC_WIN_1;
+		//mapconv_pp0_sel(sf_dev, 0x0);
+		break;
+	case LCDC_IN_MAPCONVERT:
+		win_num = LCDC_WIN_1;
+		//mapconv_pp0_sel(sf_dev, 0x1);
+		break;
+	default:
+		win_num = 2;
+	}
+
+	return win_num;
+}
+
+void lcdc_dsi_sel(struct starfive_crtc *sf_crtc)
+{
+	int temp;
+	u32 lcdc_en = 0x1;
+	u32 work_mode = 0x1;
+	u32 cfg = lcdc_en | work_mode << LCDC_WORK_MODE;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_GCTRL, cfg);
+	temp = starfive_lcdc_rstread32(sf_crtc, SRST_ASSERT0);
+	temp &= ~(0x1 << BIT_RST_DSI_DPI_PIX);
+	starfive_lcdc_rstwrite32(sf_crtc, SRST_ASSERT0, temp);
+}
+
+irqreturn_t lcdc_isr_handler(int this_irq, void *dev_id)
+{
+	struct starfive_crtc *sf_crtc = dev_id;
+	//u32 intr_status = sf_fb_lcdcread32(sf_crtc, LCDC_INT_STATUS);
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_INT_CLR, 0xffffffff);
+
+	return IRQ_HANDLED;
+}
+
+void lcdc_int_cfg(struct starfive_crtc *sf_crtc, int mask)
+{
+	u32 cfg;
+
+	if (mask == 0x1)
+		cfg = 0xffffffff;
+	else
+		cfg = ~(1U << LCDC_OUT_FRAME_END); //only frame end interrupt mask
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_INT_MSK, cfg);
+}
+
+void lcdc_config(struct starfive_crtc *sf_crtc, struct drm_crtc_state *state, int win_num)
+{
+	lcdc_mode_cfg(sf_crtc, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x0);
+	lcdc_timing_cfg(sf_crtc, state, 0);
+	lcdc_desize_cfg(sf_crtc, state);
+	lcdc_rgb_dclk_cfg(sf_crtc, 0x1);
+
+	if (sf_crtc->pp_conn_lcdc < 0) //ddr->lcdc
+		lcdc_win02_addr_cfg(sf_crtc, sf_crtc->dma_addr, 0x0);
+
+	lcdc_win_cfgA(sf_crtc, state, win_num, 0x1, 0x0, 0x0, 0x0, 0x0);
+	lcdc_win_cfgB(sf_crtc, win_num, 0x0, 0x0, 0x0);
+	lcdc_win_cfgC(sf_crtc, win_num, 0xffffff);
+
+	lcdc_win_src_size(sf_crtc, state, win_num);
+	lcdc_alpha_val_cfg(sf_crtc, 0xf, 0xf, 0xf, 0xf, 0x0);
+	lcdc_panel_cfg(sf_crtc, 0x3, 0x4, 0x0, 0x0, 0x0, 0x1);  //rgb888sel?
+}
+
+void lcdc_run(struct starfive_crtc *sf_crtc, u32 win_mode, u32 lcd_trig)
+{
+	u32 runcfg = win_mode << LCDC_EN_CFG_MODE | lcd_trig;
+
+	sf_fb_lcdcwrite32(sf_crtc, LCDC_SWITCH, runcfg);
+	dev_dbg(sf_crtc->dev, "Start run LCDC\n");
+}
+
+static int sf_fb_lcdc_clk_cfg(struct starfive_crtc *sf_crtc, struct drm_crtc_state *state)
+{
+	u32 reg_val = clk_get_rate(sf_crtc->clk_vout_src) / (state->mode.clock * HZ_PER_KHZ);
+	u32 tmp_val;
+
+	dev_dbg(sf_crtc->dev, "%s: reg_val = %u\n", __func__, reg_val);
+
+	switch (state->adjusted_mode.crtc_hdisplay) {
+	case 640:
+		tmp_val = sf_fb_clkread32(sf_crtc, CLK_LCDC_OCLK_CTRL);
+		tmp_val &= ~(0x3F);
+		tmp_val |= (59 & 0x3F);
+		sf_fb_clkwrite32(sf_crtc, CLK_LCDC_OCLK_CTRL, tmp_val);
+		break;
+	case 840:
+		tmp_val = sf_fb_clkread32(sf_crtc, CLK_LCDC_OCLK_CTRL);
+		tmp_val &= ~(0x3F);
+		tmp_val |= (54 & 0x3F);
+		sf_fb_clkwrite32(sf_crtc, CLK_LCDC_OCLK_CTRL, tmp_val);
+		break;
+	case 1024:
+		tmp_val = sf_fb_clkread32(sf_crtc, CLK_LCDC_OCLK_CTRL);
+		tmp_val &= ~(0x3F);
+		tmp_val |= (30 & 0x3F);
+		sf_fb_clkwrite32(sf_crtc, CLK_LCDC_OCLK_CTRL, tmp_val);
+		break;
+	case 1280:
+		tmp_val = sf_fb_clkread32(sf_crtc, CLK_LCDC_OCLK_CTRL);
+		tmp_val &= ~(0x3F);
+		tmp_val |= (30 & 0x3F);
+		sf_fb_clkwrite32(sf_crtc, CLK_LCDC_OCLK_CTRL, tmp_val);
+		break;
+	case 1440:
+		tmp_val = sf_fb_clkread32(sf_crtc, CLK_LCDC_OCLK_CTRL);
+		tmp_val &= ~(0x3F);
+		tmp_val |= (30 & 0x3F);
+		sf_fb_clkwrite32(sf_crtc, CLK_LCDC_OCLK_CTRL, tmp_val);
+		break;
+	case 1680:
+		tmp_val = sf_fb_clkread32(sf_crtc, CLK_LCDC_OCLK_CTRL);
+		tmp_val &= ~(0x3F);
+		tmp_val |= (24 & 0x3F);	//24 30MHZ
+		sf_fb_clkwrite32(sf_crtc, CLK_LCDC_OCLK_CTRL, tmp_val);
+		break;
+	case 1920:
+		tmp_val = sf_fb_clkread32(sf_crtc, CLK_LCDC_OCLK_CTRL);
+		tmp_val &= ~(0x3F);
+		tmp_val |= (10 & 0x3F); //20 30MHz , 15  40Mhz, 10 60Mhz
+		sf_fb_clkwrite32(sf_crtc, CLK_LCDC_OCLK_CTRL, tmp_val);
+		break;
+	case 2048:
+		tmp_val = sf_fb_clkread32(sf_crtc, CLK_LCDC_OCLK_CTRL);
+		tmp_val &= ~(0x3F);
+		tmp_val |= (10 & 0x3F);
+		sf_fb_clkwrite32(sf_crtc, CLK_LCDC_OCLK_CTRL, tmp_val);
+		break;
+	default:
+		tmp_val = sf_fb_clkread32(sf_crtc, CLK_LCDC_OCLK_CTRL);
+		tmp_val &= ~(0x3F);
+		tmp_val |= (reg_val & 0x3F);
+		sf_fb_clkwrite32(sf_crtc, CLK_LCDC_OCLK_CTRL, tmp_val);
+	}
+
+	return 0;
+}
+
+static int sf_fb_lcdc_init(struct starfive_crtc *sf_crtc, struct drm_crtc_state *state)
+{
+	int pp_id;
+	int lcd_in_pp;
+	int win_num;
+
+	pp_id = sf_crtc->pp_conn_lcdc;
+	if (pp_id < 0) {
+		dev_dbg(sf_crtc->dev, "DDR to LCDC\n");
+		lcd_in_pp = LCDC_IN_LCD_AXI;
+		win_num = lcdc_win_sel(sf_crtc, lcd_in_pp);
+		sf_crtc->win_num = win_num;
+		lcdc_config(sf_crtc, state, win_num);
+	} else {
+		dev_dbg(sf_crtc->dev, "DDR to VPP to LCDC\n");
+		lcd_in_pp = (pp_id == 0) ? LCDC_IN_VPP0 :
+			((pp_id == 1) ? LCDC_IN_VPP1 : LCDC_IN_VPP2);
+		win_num = lcdc_win_sel(sf_crtc, lcd_in_pp);
+		sf_crtc->win_num = win_num;
+		lcdc_config(sf_crtc, state, win_num);
+	}
+
+	return 0;
+}
+
+int starfive_lcdc_enable(struct starfive_crtc *sf_crtc)
+{
+	struct drm_crtc_state *state = sf_crtc->crtc.state;
+
+	lcdc_disable_intr(sf_crtc);
+
+	if (sf_fb_lcdc_clk_cfg(sf_crtc, state)) {
+		dev_err(sf_crtc->dev, "lcdc clock configure fail\n");
+		return -EINVAL;
+	}
+
+	if (sf_fb_lcdc_init(sf_crtc, state)) {
+		dev_err(sf_crtc->dev, "lcdc init fail\n");
+		return -EINVAL;
+	}
+
+	lcdc_run(sf_crtc, sf_crtc->win_num, LCDC_RUN);
+	lcdc_enable_intr(sf_crtc);
+
+	return 0;
+}
+
+MODULE_AUTHOR("StarFive Technology Co., Ltd.");
+MODULE_DESCRIPTION("loadable LCDC driver for StarFive");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/starfive/starfive_drm_lcdc.h b/drivers/gpu/drm/starfive/starfive_drm_lcdc.h
new file mode 100644
index 000000000000..6d03ef82debe
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_lcdc.h
@@ -0,0 +1,160 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#ifndef __SF_FB_LCDC_H__
+#define __SF_FB_LCDC_H__
+
+#include "starfive_drm_crtc.h"
+
+enum lcdc_in_mode {
+	LCDC_IN_LCD_AXI = 0,
+	LCDC_IN_VPP2,
+	LCDC_IN_VPP1,
+	LCDC_IN_VPP0,
+	LCDC_IN_MAPCONVERT,
+};
+
+enum lcdc_win_num {
+	LCDC_WIN_0 = 0,
+	LCDC_WIN_1,
+	LCDC_WIN_2,
+	LCDC_WIN_3,
+	LCDC_WIN_4,
+	LCDC_WIN_5,
+};
+
+enum WIN_FMT {
+	WIN_FMT_RGB565 = 4,
+	WIN_FMT_XRGB1555,
+	WIN_FMT_XRGB4444,
+	WIN_FMT_XRGB8888,
+};
+
+#define LCDC_STOP	0
+#define LCDC_RUN	1
+
+//lcdc registers
+#define LCDC_SWITCH		0x0000
+#define LCDC_GCTRL		0x0004
+#define LCDC_INT_STATUS		0x0008
+#define LCDC_INT_MSK		0x000C
+#define LCDC_INT_CLR		0x0010
+#define LCDC_RGB_H_TMG		0x0014
+#define LCDC_RGB_V_TMG		0x0018
+#define LCDC_RGB_W_TMG		0x001C
+#define LCDC_RGB_DCLK		0x0020
+#define LCDC_M_CS_CTRL		0x0024
+#define LCDC_DeltaRGB_CFG	0x0028
+#define LCDC_BACKGROUND		0x002C
+#define LCDC_WIN0_CFG_A		0x0030
+#define LCDC_WIN0_CFG_B		0x0034
+#define LCDC_WIN0_CFG_C		0x0038
+#define LCDC_WIN1_CFG_A		0x003C
+#define LCDC_WIN1_CFG_B		0x0040
+#define LCDC_WIN1_CFG_C		0x0044
+#define LCDC_WIN2_CFG_A		0x0048
+#define LCDC_WIN2_CFG_B		0x004C
+#define LCDC_WIN2_CFG_C		0x0050
+#define LCDC_WIN3_CFG_A		0x0054
+#define LCDC_WIN3_CFG_B		0x0058
+#define LCDC_WIN3_CFG_C		0x005C
+#define LCDC_WIN01_HSIZE	0x0090
+#define LCDC_WIN23_HSIZE	0x0094
+#define LCDC_WIN45_HSIZE	0x0098
+#define LCDC_WIN67_HSIZE	0x009C
+#define LCDC_ALPHA_VALUE	0x00A0
+#define LCDC_PANELDATAFMT	0x00A4
+#define LCDC_WIN0STARTADDR0	0x00B8
+#define LCDC_WIN0STARTADDR1	0x00BC
+
+/* Definition controller bit for LCDC registers */
+//for LCDC_SWITCH
+#define LCDC_DTRANS_SWITCH		0
+#define LCDC_MPU_START			1
+#define LCDC_EN_CFG_MODE		2
+//for LCDC_GCTRL
+#define LCDC_EN				0
+#define LCDC_WORK_MODE			1
+#define LCDC_A0_P			4
+#define LCDC_ENABLE_P			5
+#define LCDC_DOTCLK_P			6
+#define LCDC_HSYNC_P			7
+#define LCDC_VSYNC_P			8
+#define LCDC_DITHER_EN			9
+#define LCDC_R2Y_BPS			10
+#define LCDC_MS_SEL			11
+#define LCDC_TV_LCD_PATHSEL		12
+#define LCDC_INTERLACE			13
+#define LCDC_CBCR_ORDER			14
+#define LCDC_INT_SEL			15
+#define LCDC_INT_FREQ			24
+//for LCDC_INT_MSK
+#define LCDC_OUT_FRAME_END		5
+//for RGB_H_TMG,RGB_V_TMG,RGB_W_TMG
+#define LCDC_RGB_HBK			0
+#define LCDC_RGB_HFP			16
+#define LCDC_RGB_VBK			0
+#define LCDC_RGB_VFP			16
+#define LCDC_RGB_HPW			0
+#define LCDC_RGB_VPW			8
+#define LCDC_RGB_UNIT			16
+//for BACKGROUND
+#define LCDC_BG_HSIZE			0
+#define LCDC_BG_VSIZE			12
+//for WINx_CFG_A/B/C
+#define LCDC_WIN_HSIZE			0
+#define LCDC_WIN_VSIZE			12
+#define LCDC_WIN_EN			24
+#define LCDC_CC_EN			25
+#define LCDC_CK_EN			26
+#define LCDC_WIN_ISSEL			27
+#define LCDC_WIN_PM			28
+#define LCDC_WIN_CLK			30
+#define LCDC_WIN_HPOS			0
+#define LCDC_WIN_VPOS			12
+#define LCDC_WIN_FMT			24
+#define LCDC_WIN_ARGB_ORDER		27
+#define LCDC_WIN_CC			0
+//for WINxx_HSIZE
+#define LCDC_IMG_HSIZE			12
+//for LCDC_ALPHA_VALUE
+#define LCDC_ALPHA1			0
+#define LCDC_ALPHA2			4
+#define LCDC_ALPHA3			8
+#define LCDC_ALPHA4			12
+#define LCDC_A_GLBL_ALPHA		16
+#define LCDC_B_GLBL_ALPHA		17
+#define LCDC_01_ALPHA_SEL		18
+//for LCDC_PANELDATAFMT
+#define LCDC_BUS_W			0
+#define LCDC_TCYCLES			2
+#define LCDC_COLOR_DEP			4
+#define LCDC_PIXELS			7
+#define LCDC_332RGB_SEL			8
+#define LCDC_444RGB_SEL			9
+#define LCDC_666RGB_SEL			12
+#define LCDC_565RGB_SEL			16
+#define LCDC_888RGB_SEL			18
+
+//sysrst registers
+#define SRST_ASSERT0		0x00
+#define SRST_STATUS0		0x04
+/* Definition controller bit for syd rst registers */
+#define BIT_RST_DSI_DPI_PIX	17
+
+void lcdc_enable_intr(struct starfive_crtc *sf_crtc);
+void lcdc_disable_intr(struct starfive_crtc *sf_crtc);
+irqreturn_t lcdc_isr_handler(int this_irq, void *dev_id);
+void lcdc_int_cfg(struct starfive_crtc *sf_crtc, int mask);
+void lcdc_config(struct starfive_crtc *sf_crtc,
+		 struct drm_crtc_state *old_state,
+		 int win_num);
+int lcdc_win_sel(struct starfive_crtc *sf_crtc, enum lcdc_in_mode sel);
+void lcdc_dsi_sel(struct starfive_crtc *sf_crtc);
+void lcdc_run(struct starfive_crtc *sf_crtc,
+	      u32 win_mode, u32 lcd_trig);
+void starfive_set_win_addr(struct starfive_crtc *sf_crtc, int addr);
+int starfive_lcdc_enable(struct starfive_crtc *sf_crtc);
+
+#endif
diff --git a/drivers/gpu/drm/starfive/starfive_drm_plane.c b/drivers/gpu/drm/starfive/starfive_drm_plane.c
new file mode 100644
index 000000000000..119a9fe32769
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_plane.c
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#include <drm/drm.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_gem_atomic_helper.h>
+#include "starfive_drm_crtc.h"
+#include "starfive_drm_plane.h"
+#include "starfive_drm_gem.h"
+#include "starfive_drm_lcdc.h"
+#include "starfive_drm_vpp.h"
+
+static const u32 formats[] = {
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+
+	DRM_FORMAT_YUV420,
+	DRM_FORMAT_NV21,
+	DRM_FORMAT_NV12,
+
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_ABGR8888,
+};
+
+static void starfive_plane_destroy(struct drm_plane *plane)
+{
+	drm_plane_cleanup(plane);
+}
+
+static const struct drm_plane_funcs starfive_plane_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.destroy = starfive_plane_destroy,
+	.set_property = NULL,
+	.reset = drm_atomic_helper_plane_reset,
+	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+};
+
+static void starfive_plane_atomic_disable(struct drm_plane *plane,
+					  struct drm_atomic_state *old_state)
+{
+}
+
+static int starfive_plane_atomic_check(struct drm_plane *plane,
+				       struct drm_atomic_state *state)
+{
+	struct drm_plane_state *new_plane_state =
+		drm_atomic_get_new_plane_state(state, plane);
+	struct drm_framebuffer *fb = new_plane_state->fb;
+	struct drm_crtc_state *crtc_state;
+
+	if (!fb)
+		return 0;
+
+	if (WARN_ON(!new_plane_state->crtc))
+		return 0;
+
+	/*
+	ret = starfive_drm_plane_check(state->crtc, plane,
+				       to_starfive_plane_state(state));
+	if (ret)
+		return ret;
+	*/
+
+	//crtc_state = drm_atomic_get_crtc_state(new_plane_state->state, new_plane_state->crtc);
+	crtc_state = drm_atomic_get_crtc_state(state, new_plane_state->crtc);
+	if (IS_ERR(crtc_state))
+		return PTR_ERR(crtc_state);
+
+	return drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
+				DRM_PLANE_NO_SCALING,
+				DRM_PLANE_NO_SCALING,
+				true, true);
+}
+
+static void starfive_plane_atomic_update(struct drm_plane *plane,
+					 struct drm_atomic_state *old_state)
+{
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(old_state,
+										plane);
+	struct drm_crtc *crtc = new_state->crtc;
+	struct drm_framebuffer *fb = new_state->fb;
+	//struct drm_plane_state *state = plane->state;
+	//struct drm_crtc *crtc = state->crtc;
+	//struct drm_framebuffer *fb = state->fb;
+
+	dma_addr_t dma_addr;
+	struct drm_gem_object *obj;
+	struct starfive_drm_gem_obj *starfive_obj;
+	unsigned int pitch, format;
+
+	struct starfive_crtc *sf_crtc = to_starfive_crtc(crtc);
+
+	if (!crtc || WARN_ON(!fb))
+		return;
+
+	//if (!plane->state->visible) {
+	if (!new_state->visible) {
+		starfive_plane_atomic_disable(plane, old_state);
+		return;
+	}
+
+	obj = fb->obj[0];
+	starfive_obj = to_starfive_gem_obj(obj);
+	dma_addr = starfive_obj->dma_addr;
+	pitch = fb->pitches[0];
+	format = fb->format->format;
+
+	//dma_addr += (plane->state->src.x1 >> 16) * fb->format->cpp[0];
+	//dma_addr += (plane->state->src.y1 >> 16) * pitch;
+	dma_addr += (new_state->src.x1 >> 16) * fb->format->cpp[0];
+	dma_addr += (new_state->src.y1 >> 16) * pitch;
+	if (sf_crtc->ddr_format != format) {
+		sf_crtc->ddr_format = format;
+		sf_crtc->ddr_format_change = true;
+	} else {
+		sf_crtc->ddr_format_change = false;
+	}
+
+	if (sf_crtc->dma_addr != dma_addr) {
+		sf_crtc->dma_addr = dma_addr;
+		sf_crtc->dma_addr_change = true;
+	} else {
+		sf_crtc->dma_addr_change = false;
+	}
+	sf_crtc->size = obj->size;
+}
+
+static int starfive_plane_atomic_async_check(struct drm_plane *plane,
+					     struct drm_atomic_state *state)
+{
+	struct drm_crtc_state *crtc_state;
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
+
+	if (plane != new_plane_state->crtc->cursor)
+		return -EINVAL;
+
+	if (!plane->state)
+		return -EINVAL;
+
+	if (!plane->state->fb)
+		return -EINVAL;
+
+	//if (new_plane_state->state)
+	//   crtc_state = drm_atomic_get_existing_crtc_state(new_plane_state->state,
+	//						   new_plane_state->crtc);
+	//else /* Special case for asynchronous cursor updates. */
+	//  crtc_state = new_plane_state->crtc->state;
+
+	if (state)
+		crtc_state = drm_atomic_get_existing_crtc_state(state,
+								new_plane_state->crtc);
+	else /* Special case for asynchronous cursor updates. */
+		//crtc_state = plane->crtc->state;
+		crtc_state = new_plane_state->crtc->state;
+
+	return drm_atomic_helper_check_plane_state(plane->state, crtc_state,
+				DRM_PLANE_NO_SCALING,
+				DRM_PLANE_NO_SCALING,
+				true, true);
+}
+
+static void starfive_plane_atomic_async_update(struct drm_plane *plane,
+					       struct drm_atomic_state *new_state)
+{
+	struct drm_plane_state *new_plane_state =
+		drm_atomic_get_new_plane_state(new_state, plane);
+	struct starfive_crtc *crtcp = to_starfive_crtc(plane->state->crtc);
+
+	plane->state->crtc_x = new_plane_state->crtc_x;
+	plane->state->crtc_y = new_plane_state->crtc_y;
+	plane->state->crtc_h = new_plane_state->crtc_h;
+	plane->state->crtc_w = new_plane_state->crtc_w;
+	plane->state->src_x = new_plane_state->src_x;
+	plane->state->src_y = new_plane_state->src_y;
+	plane->state->src_h = new_plane_state->src_h;
+	plane->state->src_w = new_plane_state->src_w;
+	swap(plane->state->fb, new_plane_state->fb);
+
+	if (crtcp->is_enabled) {
+		starfive_plane_atomic_update(plane, new_state);
+		spin_lock(&crtcp->reg_lock);
+		starfive_crtc_hw_config_simple(crtcp);
+		spin_unlock(&crtcp->reg_lock);
+	}
+}
+
+static const struct drm_plane_helper_funcs starfive_plane_helper_funcs = {
+	.atomic_check = starfive_plane_atomic_check,
+	.atomic_update = starfive_plane_atomic_update,
+	//.prepare_fb = drm_gem_fb_prepare_fb,
+	.prepare_fb = drm_gem_plane_helper_prepare_fb,
+	.atomic_disable = starfive_plane_atomic_disable,
+	.atomic_async_check = starfive_plane_atomic_async_check,
+	.atomic_async_update = starfive_plane_atomic_async_update,
+};
+
+int starfive_plane_init(struct drm_device *dev,
+			struct starfive_crtc *starfive_crtc,
+			enum drm_plane_type type)
+{
+	int ret;
+
+	ret = drm_universal_plane_init(dev, starfive_crtc->planes, 0,
+				       &starfive_plane_funcs, formats,
+				       ARRAY_SIZE(formats), NULL, type, NULL);
+	if (ret) {
+		dev_err(dev->dev, "failed to initialize plane\n");
+		return ret;
+	}
+
+	drm_plane_helper_add(starfive_crtc->planes, &starfive_plane_helper_funcs);
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/starfive/starfive_drm_plane.h b/drivers/gpu/drm/starfive/starfive_drm_plane.h
new file mode 100644
index 000000000000..04c3637d4fa6
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_plane.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#ifndef _STARFIVE_DRM_PLANE_H
+#define _STARFIVE_DRM_PLANE_H
+
+int starfive_plane_init(struct drm_device *dev,
+			struct starfive_crtc *starfive_crtc,
+			enum drm_plane_type type);
+
+#endif /* _STARFIVE_DRM_PLANE_H */
diff --git a/drivers/gpu/drm/starfive/starfive_drm_vpp.c b/drivers/gpu/drm/starfive/starfive_drm_vpp.c
new file mode 100644
index 000000000000..7a118222bd93
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_vpp.c
@@ -0,0 +1,766 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/reset.h>
+#include <linux/delay.h>
+#include "starfive_drm_vpp.h"
+#include "starfive_drm_crtc.h"
+#include <soc/sifive/sifive_ccache.h>
+
+static inline void sf_set_clear(void __iomem *addr, u32 reg, u32 set, u32 clear)
+{
+	u32 value = ioread32(addr + reg);
+
+	value &= ~clear;
+	value |= set;
+	iowrite32(value, addr + reg);
+}
+
+static u32 sf_fb_sysread32(struct starfive_crtc *sf_crtc, u32 reg)
+{
+	return ioread32(sf_crtc->base_syscfg + reg);
+}
+
+static void sf_fb_syswrite32(struct starfive_crtc *sf_crtc, u32 reg, u32 val)
+{
+	iowrite32(val, sf_crtc->base_syscfg + reg);
+}
+
+static u32 sf_fb_vppread32(struct starfive_crtc *sf_crtc, int pp_num, u32 reg)
+{
+	void __iomem *base_vpp;
+
+	switch (pp_num) {
+	case 0:
+		base_vpp = sf_crtc->base_vpp0;
+		break;
+	case 1:
+		base_vpp = sf_crtc->base_vpp1;
+		break;
+	case 2:
+		base_vpp = sf_crtc->base_vpp2;
+		break;
+	default:
+		dev_err(sf_crtc->dev, "Err：invalid vpp Number!\n");
+		return 0;
+	}
+
+	return ioread32(base_vpp + reg);
+}
+
+static void sf_fb_vppwrite32(struct starfive_crtc *sf_crtc, int pp_num, u32 reg, u32 val)
+{
+	void __iomem *base_vpp;
+
+	switch (pp_num) {
+	case 0:
+		base_vpp = sf_crtc->base_vpp0;
+		break;
+	case 1:
+		base_vpp = sf_crtc->base_vpp1;
+		break;
+	case 2:
+		base_vpp = sf_crtc->base_vpp2;
+		break;
+	default:
+		dev_err(sf_crtc->dev, "Err：invalid vpp Number!\n");
+		return;
+	}
+	iowrite32(val, base_vpp + reg);
+}
+
+void mapconv_pp0_sel(struct starfive_crtc *sf_crtc, int sel)
+{
+	u32 temp;
+
+	temp = sf_fb_sysread32(sf_crtc, SYS_MAP_CONV);
+	temp &= ~(0x1);
+	temp |= (sel & 0x1);
+	sf_fb_syswrite32(sf_crtc, SYS_MAP_CONV, temp);
+}
+
+static void pp_output_cfg(struct starfive_crtc *sf_crtc,
+			  int pp_num, int out_sel, int prog_inter, int desformat,
+			  int pt_mode)
+{
+	int cfg = out_sel | prog_inter << PP_INTERLACE |
+		desformat << PP_DES_FORMAT |
+		pt_mode << PP_POINTER_MODE;
+	int pre_cfg = sf_fb_vppread32(sf_crtc, pp_num, PP_CTRL1) & 0xffff8f0U;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_CTRL1, cfg | pre_cfg);
+	dev_dbg(sf_crtc->dev, "PP%d out_sel: %d, outFormat: 0x%x, Out Interlace: %d, pt_mode: %d\n",
+		pp_num, out_sel, desformat, prog_inter, pt_mode);
+}
+
+static void pp_srcfmt_cfg(struct starfive_crtc *sf_crtc, int pp_num, int srcformat,
+			  int yuv420_inter, int yuv422_mode, int yuv420_mode, int argb_ord)
+{
+	int cfg = srcformat << PP_SRC_FORMAT_N |
+		yuv420_inter << PP_420_ITLC |
+		yuv422_mode << PP_SRC_422_YUV_POS |
+		yuv420_mode << PP_SRC_420_YUV_POS |
+		argb_ord << PP_SRC_ARGB_ORDER;
+	int pre_cfg = sf_fb_vppread32(sf_crtc, pp_num, PP_CTRL1) & 0x83ffff0fU;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_CTRL1, cfg | pre_cfg);
+	dev_dbg(sf_crtc->dev, "PP%d Src Format: 0x%x, YUV420 Interlace: %d, YUV422: %d, YUV420: %d, ARGB Order: %d\n",
+		pp_num, srcformat, yuv420_inter, yuv422_mode, yuv420_mode, argb_ord);
+}
+
+static void pp_r2yscal_bypass(struct starfive_crtc *sf_crtc,
+			      int pp_num, int r2y_byp, int scal_byp, int y2r_byp)
+{
+	int bypass = (r2y_byp | scal_byp << 1 | y2r_byp << 2) << PP_R2Y_BPS;
+	int pre_cfg = sf_fb_vppread32(sf_crtc, pp_num, PP_CTRL1) & 0xffff8fffU;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_CTRL1, bypass | pre_cfg);
+	dev_dbg(sf_crtc->dev, "PP%d Bypass R2Y: %d, Y2R: %d, MainSacle: %d\n",
+		pp_num, r2y_byp, y2r_byp, scal_byp);
+}
+
+static void pp_argb_alpha(struct starfive_crtc *sf_crtc, int pp_num, int alpha)
+{
+	int pre_cfg = sf_fb_vppread32(sf_crtc, pp_num, PP_CTRL1) & 0xff00ffffU;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_CTRL1, alpha << PP_ARGB_ALPHA | pre_cfg);
+	dev_dbg(sf_crtc->dev, "PP%d Alpha: 0x%4x\n", pp_num, alpha);
+}
+
+//rgbNum: 1-3
+static void pp_r2y_coeff(struct starfive_crtc *sf_crtc,
+			 int pp_num, int coef_num, int rcoef, int gcoef, int bcoef, int off)
+{
+	int rgcoeff = rcoef | gcoef << PP_COEF_G1;
+	int bcoefoff = bcoef | off << PP_OFFSET_1;
+	u32 addr1 = (coef_num - 1) * 0x8 + PP_R2Y_COEF1;
+	u32 addr2 = (coef_num - 1) * 0x8 + PP_R2Y_COEF2;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, addr1, rgcoeff);
+	sf_fb_vppwrite32(sf_crtc, pp_num, addr2, bcoefoff);
+	dev_dbg(sf_crtc->dev, "PP%d coef_num: %d, rCoef: 0x%4x, gCoef: 0x%4x, bCoef: 0x%4x, off: 0x%4x\n",
+		pp_num, coef_num, rcoef, gcoef, bcoef, off);
+}
+
+static void pp_output_fmt_cfg(struct starfive_crtc *sf_crtc,
+			      int pp_num, int yuv420_inter, int yuv422_mode)
+{
+	int pre_cfg = sf_fb_vppread32(sf_crtc, pp_num, PP_CTRL2) & 0xfffffffeU;
+
+	pre_cfg = pre_cfg |
+		yuv420_inter << PP_DES_420_ORDER |
+		yuv422_mode << PP_DES_422_ORDER;
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_CTRL2, pre_cfg);
+	dev_dbg(sf_crtc->dev, "PP%d Lock Transfer: %d\n", pp_num, yuv422_mode);
+}
+
+static void pp_lock_trans_cfg(struct starfive_crtc *sf_crtc, int pp_num, int lock_trans)
+{
+	int pre_cfg = sf_fb_vppread32(sf_crtc, pp_num, PP_CTRL2) & 0xfffffffeU;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_CTRL2, lock_trans | pre_cfg);
+	dev_dbg(sf_crtc->dev, "PP%d Lock Transfer: %d\n", pp_num, lock_trans);
+}
+
+static void pp_int_interval_cfg(struct starfive_crtc *sf_crtc, int pp_num, int interval)
+{
+	int pre_cfg = sf_fb_vppread32(sf_crtc, pp_num, PP_CTRL2) & 0xffff00ffU;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_CTRL2, interval << PP_INT_INTERVAL | pre_cfg);
+	dev_dbg(sf_crtc->dev, "PP%d Frame Interrupt interval: %d Frames\n", pp_num, interval);
+}
+
+static void pp_src_size_cfg(struct starfive_crtc *sf_crtc, int pp_num, int hsize, int vsize)
+{
+	int size = hsize | vsize << PP_SRC_VSIZE;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_SRC_SIZE, size);
+	dev_dbg(sf_crtc->dev, "PP%d HSize: %d, VSize: %d\n", pp_num, hsize, vsize);
+}
+
+//0-no drop, 1-1/2, 2-1/4, down to 1/32
+static void pp_drop_cfg(struct starfive_crtc *sf_crtc, int pp_num, int hdrop, int vdrop)
+{
+	int drop = hdrop | vdrop << PP_DROP_VRATION;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_DROP_CTRL, drop);
+	dev_dbg(sf_crtc->dev, "PP%d HDrop: %d, VDrop: %d\n", pp_num, hdrop, vdrop);
+}
+
+static void pp_des_size_cfg(struct starfive_crtc *sf_crtc, int pp_num, int hsize, int vsize)
+{
+	int size = hsize | vsize << PP_DES_VSIZE;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_DES_SIZE, size);
+	dev_dbg(sf_crtc->dev, "PP%d HSize: %d, VSize: %d\n", pp_num, hsize, vsize);
+}
+
+static void pp_des_addr_cfg(struct starfive_crtc *sf_crtc,
+			    int pp_num, int yaddr, int uaddr, int vaddr)
+{
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_DES_Y_SA, yaddr);
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_DES_U_SA, uaddr);
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_DES_V_SA, vaddr);
+	dev_dbg(sf_crtc->dev, "PP%d des-Addr Y: 0x%8x, U: 0x%8x, V: 0x%8x\n",
+		pp_num, yaddr, uaddr, vaddr);
+}
+
+static void pp_des_offset_cfg(struct starfive_crtc *sf_crtc,
+			      int pp_num, int yoff, int uoff, int voff)
+{
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_DES_Y_OFS, yoff);
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_DES_U_OFS, uoff);
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_DES_V_OFS, voff);
+	dev_dbg(sf_crtc->dev, "PP%d des-Offset Y: 0x%4x, U: 0x%4x, V: 0x%4x\n",
+		pp_num, yoff, uoff, voff);
+}
+
+void pp_intcfg(struct starfive_crtc *sf_crtc, int pp_num, int int_mask)
+{
+	int intcfg = ~(0x1 << 0);
+
+	if (int_mask)
+		intcfg = 0xf;
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_INT_MASK, intcfg);
+}
+
+//next source frame Y/RGB start address, ?
+void pp_src_addr_next(struct starfive_crtc *sf_crtc, int pp_num, int ysa, int usa, int vsa)
+{
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_SRC_Y_SA_NXT, ysa);
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_SRC_U_SA_NXT, usa);
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_SRC_V_SA_NXT, vsa);
+	dev_dbg(sf_crtc->dev,
+		"PP%d next Y startAddr: 0x%8x, U startAddr: 0x%8x, V startAddr: 0x%8x\n",
+		pp_num, ysa, usa, vsa);
+}
+
+void pp_src_offset_cfg(struct starfive_crtc *sf_crtc, int pp_num, int yoff, int uoff, int voff)
+{
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_SRC_Y_OFS, yoff);
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_SRC_U_OFS, uoff);
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_SRC_V_OFS, voff);
+	dev_dbg(sf_crtc->dev, "PP%d src-Offset Y: 0x%4x, U: 0x%4x, V: 0x%4x\n",
+		pp_num, yoff, uoff, voff);
+}
+
+void pp_nxt_addr_load(struct starfive_crtc *sf_crtc, int pp_num, int nxt_par, int nxt_pos)
+{
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_LOAD_NXT_PAR, nxt_par | nxt_pos);
+	dev_dbg(sf_crtc->dev, "PP%d next addrPointer: %d, %d set Regs\n", pp_num, nxt_par, nxt_pos);
+}
+
+void pp_run(struct starfive_crtc *sf_crtc, int pp_num, int start)
+{
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_SWITCH, start);
+	//if (start)
+	//	dev_dbg(sf_crtc->dev, "Now start the PP%d\n\n", pp_num);
+}
+
+void pp1_enable_intr(struct starfive_crtc *sf_crtc)
+{
+	sf_fb_vppwrite32(sf_crtc, 1, PP_INT_MASK, 0x0);
+}
+
+void pp_enable_intr(struct starfive_crtc *sf_crtc, int pp_num)
+{
+	u32 cfg = 0xfffe;
+
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_INT_MASK, cfg);
+}
+
+void pp_disable_intr(struct starfive_crtc *sf_crtc, int pp_num)
+{
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_INT_MASK, 0xf);
+	sf_fb_vppwrite32(sf_crtc, pp_num, PP_INT_CLR, 0xf);
+}
+
+static void pp_srcfmt_set(struct starfive_crtc *sf_crtc, int pp_num, struct pp_video_mode *src)
+{
+	switch (src->format) {
+	case COLOR_YUV422_YVYU:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_YUV422, 0x0, COLOR_YUV422_YVYU, 0x0, 0x0);
+		break;
+	case COLOR_YUV422_VYUY:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_YUV422, 0x0, COLOR_YUV422_VYUY, 0x0, 0x0);
+		break;
+	case COLOR_YUV422_YUYV:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_YUV422, 0x0, COLOR_YUV422_YUYV, 0x0, 0x0);
+		break;
+	case COLOR_YUV422_UYVY:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_YUV422, 0x0, COLOR_YUV422_UYVY, 0x0, 0x0);
+		break;
+	case COLOR_YUV420P:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_YUV420P, 0x0, 0, 0x0, 0x0);
+		break;
+	case COLOR_YUV420_NV21:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_YUV420I, 0x1, 0,
+			      COLOR_YUV420_NV21 - COLOR_YUV420_NV21, 0x0);
+		break;
+	case COLOR_YUV420_NV12:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_YUV420I, 0x1, 0,
+			      COLOR_YUV420_NV12 - COLOR_YUV420_NV21, 0x0);
+		break;
+	case COLOR_RGB888_ARGB:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_GRB888, 0x0, 0x0,
+			      0x0, COLOR_RGB888_ARGB - COLOR_RGB888_ARGB);
+		break;
+	case COLOR_RGB888_ABGR:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_GRB888, 0x0, 0x0,
+			      0x0, COLOR_RGB888_ABGR - COLOR_RGB888_ARGB);
+		break;
+	case COLOR_RGB888_RGBA:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_GRB888, 0x0, 0x0,
+			      0x0, COLOR_RGB888_RGBA - COLOR_RGB888_ARGB);
+		break;
+	case COLOR_RGB888_BGRA:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_GRB888, 0x0, 0x0,
+			      0x0, COLOR_RGB888_BGRA - COLOR_RGB888_ARGB);
+		break;
+	case COLOR_RGB565:
+		pp_srcfmt_cfg(sf_crtc, pp_num, PP_SRC_RGB565, 0x0, 0x0, 0x0, 0x0);
+		break;
+	}
+}
+
+static void pp_dstfmt_set(struct starfive_crtc *sf_crtc, int pp_num, struct pp_video_mode *dst)
+{
+	unsigned int outsel = 1;
+
+	if (dst->addr)
+		outsel = 0;
+
+	switch (dst->format) {
+	case COLOR_YUV422_YVYU:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_YUV422, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, 0, COLOR_YUV422_UYVY - COLOR_YUV422_YVYU);
+		break;
+	case COLOR_YUV422_VYUY:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_YUV422, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, 0, COLOR_YUV422_UYVY - COLOR_YUV422_VYUY);
+		break;
+	case COLOR_YUV422_YUYV:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_YUV422, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, 0, COLOR_YUV422_UYVY - COLOR_YUV422_YUYV);
+		break;
+	case COLOR_YUV422_UYVY:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_YUV422, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, 0, COLOR_YUV422_UYVY - COLOR_YUV422_YVYU);
+		break;
+	case COLOR_YUV420P:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_YUV420P, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, 0, 0);
+		break;
+	case COLOR_YUV420_NV21:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_YUV420I, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, COLOR_YUV420_NV21 - COLOR_YUV420_NV21, 0);
+		break;
+	case COLOR_YUV420_NV12:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_YUV420I, 0x0);///0x2, 0x0);
+		//pp_output_fmt_cfg(pp_num, COLOR_YUV420_NV12 - COLOR_YUV420_NV21, 0);
+		break;
+	case COLOR_RGB888_ARGB:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_ARGB888, 0x0);
+		//pp_output_fmt_cfg(pp_num, 0, 0);
+		break;
+	case COLOR_RGB888_ABGR:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_ABGR888, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, 0, 0);
+		break;
+	case COLOR_RGB888_RGBA:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_RGBA888, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, 0, 0);
+		break;
+	case COLOR_RGB888_BGRA:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_BGRA888, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, 0, 0);
+		break;
+	case COLOR_RGB565:
+		pp_output_cfg(sf_crtc, pp_num, outsel, 0x0, PP_DST_RGB565, 0x0);
+		pp_output_fmt_cfg(sf_crtc, pp_num, 0, 0);
+		break;
+	}
+}
+
+static void pp_format_set(struct starfive_crtc *sf_crtc, int pp_num,
+			  struct pp_video_mode *src, struct pp_video_mode *dst)
+{
+	/* 1:bypass, 0:not bypass */
+	unsigned int scale_byp = 1;
+
+	pp_srcfmt_set(sf_crtc, pp_num, src);
+	pp_dstfmt_set(sf_crtc, pp_num, dst);
+
+	if (src->height != dst->height || src->width != dst->width)
+		scale_byp = 0;
+
+	if (src->format >= COLOR_RGB888_ARGB && dst->format <= COLOR_YUV420_NV12) {
+		/* rgb -> yuv-420 */
+		pp_r2yscal_bypass(sf_crtc, pp_num, NOT_BYPASS, scale_byp, BYPASS);
+		pp_r2y_coeff(sf_crtc, pp_num, 1, R2Y_COEF_R1, R2Y_COEF_G1,
+			     R2Y_COEF_B1, R2Y_OFFSET1);
+		pp_r2y_coeff(sf_crtc, pp_num, 2, R2Y_COEF_R2, R2Y_COEF_G2,
+			     R2Y_COEF_B2, R2Y_OFFSET2);
+		pp_r2y_coeff(sf_crtc, pp_num, 3, R2Y_COEF_R3, R2Y_COEF_G3,
+			     R2Y_COEF_B3, R2Y_OFFSET3);
+	} else if (src->format <= COLOR_YUV420_NV12 && dst->format >= COLOR_RGB888_ARGB) {
+		/* yuv-420 -> rgb */
+		pp_r2yscal_bypass(sf_crtc, pp_num, BYPASS, scale_byp, NOT_BYPASS);
+	} else if (src->format <= COLOR_YUV422_YVYU && dst->format <= COLOR_YUV420_NV12) {
+		/* yuv422 -> yuv420 */
+		pp_r2yscal_bypass(sf_crtc, pp_num, BYPASS, scale_byp, BYPASS);
+	} else {
+		/* rgb565->argb888 */
+		pp_r2yscal_bypass(sf_crtc, pp_num, BYPASS, scale_byp, BYPASS);
+	} //else if ((src->format >= COLOR_RGB888_ARGB) && (dst->format >= COLOR_RGB888_ARGB)) {
+		/* rgb -> rgb */
+		// pp_r2yscal_bypass(pp_num, BYPASS, scale_byp, BYPASS);
+	//}
+	pp_argb_alpha(sf_crtc, pp_num, 0xff);
+
+	if (dst->addr)
+		pp_lock_trans_cfg(sf_crtc, pp_num, SYS_BUS_OUTPUT);
+	else
+		pp_lock_trans_cfg(sf_crtc, pp_num, FIFO_OUTPUT);
+
+	pp_int_interval_cfg(sf_crtc, pp_num, 0x1);
+}
+
+static void pp_size_set(struct starfive_crtc *sf_crtc, int pp_num,
+			struct pp_video_mode *src, struct pp_video_mode *dst)
+{
+	u32 src_addr, dstaddr;
+	unsigned int y_rgb_ofst = 0, uofst = 0, v_uvofst = 0;
+	unsigned int next_y_rgb_addr = 0, next_u_addr = 0, next_v_addr = 0;
+	unsigned int i = 0;
+	unsigned int size;
+
+	pp_src_size_cfg(sf_crtc, pp_num, src->width - 1, src->height - 1);
+	pp_drop_cfg(sf_crtc, pp_num, 0x0, 0x0);///0:no drop
+	pp_des_size_cfg(sf_crtc, pp_num, dst->width - 1, dst->height - 1);
+
+	src_addr = src->addr + (i << 30); //PP_SRC_BASE_ADDR + (i << 30);
+	size = src->width * src->height;
+
+	if (src->format >= COLOR_RGB888_ARGB) {
+		next_y_rgb_addr = src_addr;
+		next_u_addr = 0;
+		next_v_addr = 0;
+
+		//pp_src_addr_next(pp_num, src_addr, 0, 0);
+		//pp_src_offset_cfg(pp_num, 0x0, 0x0, 0x0);
+	} else {
+		if (src->format == COLOR_YUV420_NV21) {    //ok
+			next_y_rgb_addr = src_addr;
+			next_u_addr = src_addr + size + 1;
+			next_v_addr = src_addr + size;
+			v_uvofst = size;
+		} else if (src->format == COLOR_YUV420_NV12) {
+			next_y_rgb_addr = src_addr;
+			next_u_addr = src_addr + size;
+			next_v_addr = src_addr + size + 1;
+			v_uvofst = size;
+		} else if (src->format == COLOR_YUV420P) {
+			next_y_rgb_addr = src_addr;
+			next_u_addr = src_addr + size;
+			next_v_addr = src_addr + size * 5 / 4;
+		} else if (src->format == COLOR_YUV422_YVYU) {   //ok
+			next_y_rgb_addr = src_addr;
+			next_u_addr = src_addr + 1;
+			next_v_addr = src_addr + 3;
+		} else if (src->format == COLOR_YUV422_VYUY) {   //ok
+			next_y_rgb_addr = src_addr + 1;
+			next_u_addr = src_addr + 2;
+			next_v_addr = src_addr;
+		} else if (src->format == COLOR_YUV422_YUYV) {   //ok
+			next_y_rgb_addr = src_addr;
+			next_u_addr = src_addr + 1;
+			next_v_addr = src_addr + 2;
+		} else if (src->format == COLOR_YUV422_UYVY) {  //ok
+			next_y_rgb_addr = src_addr + 1;
+			next_u_addr = src_addr;
+			next_v_addr = src_addr + 2;
+		}
+	}
+	pp_src_addr_next(sf_crtc, pp_num, next_y_rgb_addr, next_u_addr, next_v_addr);
+	pp_src_offset_cfg(sf_crtc, pp_num, y_rgb_ofst, uofst, v_uvofst);
+	/* source addr not change */
+	pp_nxt_addr_load(sf_crtc, pp_num, 0x1, (i & 0x1));
+
+	if (dst->addr) {
+		dstaddr = dst->addr;
+		size = dst->height * dst->width;
+		y_rgb_ofst = 0;
+		uofst = 0;
+		v_uvofst = 0;
+
+		if (dst->format >= COLOR_RGB888_ARGB) {
+			next_y_rgb_addr = dstaddr;
+			next_u_addr = 0;
+			next_v_addr = 0;
+		} else {
+			if (dst->format == COLOR_YUV420_NV21) {
+				/* yyyyvuvuvu */
+				next_y_rgb_addr = dstaddr;
+				next_u_addr = dstaddr + size;
+				next_v_addr = 0;//dstaddr + size;
+			} else if (dst->format == COLOR_YUV420_NV12) {
+				/* yyyyuvuvuv */
+				next_y_rgb_addr = dstaddr;
+				next_u_addr = dstaddr + size;
+				next_v_addr = dstaddr + size + 1;
+				uofst = size;
+			} else if (dst->format == COLOR_YUV420P) {
+				next_y_rgb_addr = dstaddr;
+				next_u_addr = dstaddr + size;
+				next_v_addr = dstaddr + size * 5 / 4;
+			} else if (dst->format == COLOR_YUV422_YVYU) {
+				next_y_rgb_addr = dstaddr;
+				next_u_addr = dstaddr + 1;
+				next_v_addr = dstaddr + 3;
+			} else if (dst->format == COLOR_YUV422_VYUY) {
+				next_y_rgb_addr = dstaddr + 1;
+				next_u_addr = dstaddr + 2;
+				next_v_addr = dstaddr;
+			} else if (dst->format == COLOR_YUV422_YUYV) {
+				next_y_rgb_addr = dstaddr;
+				next_u_addr = dstaddr + 1;
+				next_v_addr = dstaddr + 2;
+			} else if (dst->format == COLOR_YUV422_UYVY) {
+				next_y_rgb_addr = dstaddr + 1;
+				next_u_addr = dstaddr;
+				next_v_addr = dstaddr + 2;
+			}
+		}
+		pp_des_addr_cfg(sf_crtc, pp_num, next_y_rgb_addr, next_u_addr, next_v_addr);
+		pp_des_offset_cfg(sf_crtc, pp_num, y_rgb_ofst, uofst, v_uvofst);
+	}
+}
+
+static void pp_config(struct starfive_crtc *sf_crtc, int pp_num,
+		      struct pp_video_mode *src, struct pp_video_mode *dst)
+{
+	//pp_disable_intr(sf_dev, pp_num);
+	pp_format_set(sf_crtc, pp_num, src, dst);
+	pp_size_set(sf_crtc, pp_num, src, dst);
+}
+
+irqreturn_t vpp1_isr_handler(int this_irq, void *dev_id)
+{
+	struct starfive_crtc *sf_crtc = dev_id;
+
+	sf_fb_vppread32(sf_crtc, 1, PP_INT_STATUS);
+	sf_fb_vppwrite32(sf_crtc, 1, PP_INT_CLR, 0xf);
+	sifive_ccache_flush_range(sf_crtc->dma_addr, sf_crtc->size);
+
+	return IRQ_HANDLED;
+}
+
+static void starfive_pp_enable_intr(struct starfive_crtc *sf_crtc, int enable)
+{
+	int pp_id;
+
+	for (pp_id = 0; pp_id < PP_NUM; pp_id++) {
+		if (sf_crtc->pp[pp_id].inited == 1) {
+			if (enable)
+				pp_enable_intr(sf_crtc, pp_id);
+			else
+				pp_disable_intr(sf_crtc, pp_id);
+		}
+	}
+}
+
+static int starfive_pp_video_mode_init(struct starfive_crtc *sf_crtc,
+				       struct pp_video_mode *src,
+				       struct pp_video_mode *dst,
+				       int pp_id)
+{
+	if (!src || !dst) {
+		dev_err(sf_crtc->dev, "Invalid argument!\n");
+		return -EINVAL;
+	}
+
+	if (pp_id < PP_NUM && pp_id >= 0) {
+		src->format = sf_crtc->vpp_format;
+		src->width = sf_crtc->crtc.state->adjusted_mode.hdisplay;
+		src->height = sf_crtc->crtc.state->adjusted_mode.vdisplay;
+		src->addr = sf_crtc->dma_addr;
+		//src->addr = 0xa0000000;
+		dst->format = sf_crtc->pp[pp_id].dst.format;
+		dst->width = sf_crtc->crtc.state->adjusted_mode.hdisplay;
+		dst->height = sf_crtc->crtc.state->adjusted_mode.vdisplay;
+		if (sf_crtc->pp[pp_id].bus_out) /*out to ddr*/
+			dst->addr = 0xfc000000;
+		else if (sf_crtc->pp[pp_id].fifo_out) /*out to lcdc*/
+			dst->addr = 0;
+	} else {
+		dev_err(sf_crtc->dev, "pp_id %d is not support\n", pp_id);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int starfive_pp_init(struct starfive_crtc *sf_crtc)
+{
+	int pp_id;
+	int ret = 0;
+	struct pp_video_mode src, dst;
+
+	for (pp_id = 0; pp_id < PP_NUM; pp_id++) {
+		if (sf_crtc->pp[pp_id].inited == 1) {
+			ret = starfive_pp_video_mode_init(sf_crtc, &src, &dst, pp_id);
+			if (!ret)
+				pp_config(sf_crtc, pp_id, &src, &dst);
+		}
+	}
+
+	return ret;
+}
+
+static int starfive_pp_run(struct starfive_crtc *sf_crtc)
+{
+	int pp_id;
+	int ret = 0;
+
+	for (pp_id = 0; pp_id < PP_NUM; pp_id++) {
+		if (sf_crtc->pp[pp_id].inited == 1)
+			pp_run(sf_crtc, pp_id, PP_RUN);
+	}
+
+	return ret;
+}
+
+int starfive_pp_enable(struct starfive_crtc *sf_crtc)
+{
+	starfive_pp_enable_intr(sf_crtc, PP_INTR_DISABLE);
+
+	if (starfive_pp_init(sf_crtc))
+		return -ENODEV;
+
+	starfive_pp_run(sf_crtc);
+	starfive_pp_enable_intr(sf_crtc, PP_INTR_ENABLE);
+
+	return 0;
+}
+
+int starfive_pp_update(struct starfive_crtc *sf_crtc)
+{
+	int pp_id;
+	int ret = 0;
+	struct pp_video_mode src, dst;
+
+	for (pp_id = 0; pp_id < PP_NUM; pp_id++) {
+		if (sf_crtc->pp[pp_id].inited == 1) {
+			ret = starfive_pp_video_mode_init(sf_crtc, &src, &dst, pp_id);
+			if (!ret) {
+				if (sf_crtc->ddr_format_change)
+					pp_format_set(sf_crtc, pp_id, &src, &dst);
+
+				if (sf_crtc->dma_addr_change)
+					pp_size_set(sf_crtc, pp_id, &src, &dst);
+			}
+		}
+	}
+
+	return 0;
+}
+
+int starfive_pp_get_2lcdc_id(struct starfive_crtc *sf_crtc)
+{
+	int pp_id;
+
+	for (pp_id = 0; pp_id < PP_NUM; pp_id++) {
+		if (sf_crtc->pp[pp_id].inited == 1) {
+			if (sf_crtc->pp[pp_id].fifo_out == 1 && !sf_crtc->pp[pp_id].bus_out)
+				return pp_id;
+		}
+	}
+
+	if (pp_id == PP_NUM - 1)
+		dev_warn(sf_crtc->dev, "NO pp connect to LCDC\n");
+
+	return -ENODEV;
+}
+
+void dsitx_vout_init(struct starfive_crtc *sf_crtc)
+{
+	u32 temp;
+
+	reset_control_assert(sf_crtc->rst_vout_src);
+	reset_control_assert(sf_crtc->rst_disp_axi);
+	clk_prepare_enable(sf_crtc->clk_disp_axi);
+	clk_prepare_enable(sf_crtc->clk_vout_src);
+	reset_control_deassert(sf_crtc->rst_vout_src);
+	reset_control_deassert(sf_crtc->rst_disp_axi);
+
+	sf_set_clear(sf_crtc->base_clk, clk_disp0_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_disp1_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_lcdc_oclk_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_lcdc_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_vpp0_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_vpp1_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_vpp2_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_ppi_tx_esc_clk_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_dsi_apb_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_dsi_sys_clk_ctrl_REG, BIT(31), BIT(31));
+
+	sf_set_clear(sf_crtc->base_rst, vout_rstgen_assert0_REG, ~0x1981ec, 0x1981ec);
+
+	do {
+		temp = ioread32(sf_crtc->base_rst + vout_rstgen_status0_REG);
+		temp &= 0x1981ec;
+	} while (temp != 0x1981ec);
+}
+
+void vout_reset(struct starfive_crtc *sf_crtc)
+{
+	u32 temp;
+
+	iowrite32(0xFFFFFFFF, sf_crtc->base_rst);
+
+	clk_prepare_enable(sf_crtc->clk_disp_axi);
+	clk_prepare_enable(sf_crtc->clk_vout_src);
+	reset_control_deassert(sf_crtc->rst_vout_src);
+	reset_control_deassert(sf_crtc->rst_disp_axi);
+
+	sf_set_clear(sf_crtc->base_clk, clk_disp0_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_disp1_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_lcdc_oclk_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_lcdc_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_vpp0_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_vpp1_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_vpp2_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_mapconv_apb_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_mapconv_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_pixrawout_apb_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_pixrawout_axi_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_csi2tx_strm0_apb_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_csi2tx_strm0_pixclk_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_ppi_tx_esc_clk_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_dsi_apb_ctrl_REG, BIT(31), BIT(31));
+	sf_set_clear(sf_crtc->base_clk, clk_dsi_sys_clk_ctrl_REG, BIT(31), BIT(31));
+
+	sf_set_clear(sf_crtc->base_rst, vout_rstgen_assert0_REG, ~0x19bfff, 0x19bfff);
+	do {
+		temp = ioread32(sf_crtc->base_rst + vout_rstgen_status0_REG);
+		temp &= 0x19bfff;
+	} while (temp != 0x19bfff);
+}
+
+void vout_disable(struct starfive_crtc *sf_crtc)
+{
+	iowrite32(0xFFFFFFFF, sf_crtc->base_rst);
+
+	clk_disable_unprepare(sf_crtc->clk_disp_axi);
+	clk_disable_unprepare(sf_crtc->clk_vout_src);
+	reset_control_assert(sf_crtc->rst_vout_src);
+	reset_control_assert(sf_crtc->rst_disp_axi);
+}
+
+MODULE_AUTHOR("StarFive Technology Co., Ltd.");
+MODULE_DESCRIPTION("loadable VPP driver for StarFive");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/starfive/starfive_drm_vpp.h b/drivers/gpu/drm/starfive/starfive_drm_vpp.h
new file mode 100644
index 000000000000..12a1928987c3
--- /dev/null
+++ b/drivers/gpu/drm/starfive/starfive_drm_vpp.h
@@ -0,0 +1,201 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#ifndef __SF_FB_VPP_H__
+#define __SF_FB_VPP_H__
+
+#include "starfive_drm_crtc.h"
+
+#define PP_ID_0	0
+#define PP_ID_1	1
+#define PP_ID_2	2
+
+#define PP_NUM	3
+
+#define PP_STOP	0
+#define PP_RUN	1
+
+#define PP_INTR_ENABLE	1
+#define PP_INTR_DISABLE	0
+//PP coefficients
+#define R2Y_COEF_R1	77
+#define R2Y_COEF_G1	150
+#define R2Y_COEF_B1	29
+#define R2Y_OFFSET1	0
+#define R2Y_COEF_R2	(0x400 | 43)
+#define R2Y_COEF_G2	(0x400 | 85)
+#define R2Y_COEF_B2	128
+#define R2Y_OFFSET2	128
+#define R2Y_COEF_R3	128
+#define R2Y_COEF_G3	(0x400 | 107)
+#define R2Y_COEF_B3	(0x400 | 21)
+#define R2Y_OFFSET3	128
+
+//sys registers
+#define SYS_CONF_LCDC		0x00
+#define SYS_CONF_PP		0x04
+#define SYS_MAP_CONV		0x08
+
+//vout clk registers
+#define CLK_LCDC_OCLK_CTRL	0x14
+
+enum PP_LCD_PATH {
+	SYS_BUS_OUTPUT = 0,
+	FIFO_OUTPUT = 1,
+};
+
+enum PP_COLOR_CONVERT_SCALE {
+	NOT_BYPASS = 0,
+	BYPASS,
+};
+
+enum PP_SRC_FORMAT {
+	PP_SRC_YUV420P = 0,
+	PP_SRC_YUV422,
+	PP_SRC_YUV420I,
+	PP_RESERVED,
+	PP_SRC_GRB888,
+	PP_SRC_RGB565,
+};
+
+enum PP_DST_FORMAT {
+	PP_DST_YUV420P = 0,
+	PP_DST_YUV422,
+	PP_DST_YUV420I,
+	PP_DST_RGBA888,
+	PP_DST_ARGB888,
+	PP_DST_RGB565,
+	PP_DST_ABGR888,
+	PP_DST_BGRA888,
+};
+
+struct pp_video_mode {
+	enum COLOR_FORMAT format;
+	unsigned int height;
+	unsigned int width;
+	unsigned int addr;
+};
+
+struct pp_mode {
+	char pp_id;
+	bool bus_out;	/*out to ddr*/
+	bool fifo_out;	/*out to lcdc*/
+	bool inited;
+	struct pp_video_mode src;
+	struct pp_video_mode dst;
+};
+
+//vpp registers
+#define PP_SWITCH		0x0000
+#define PP_CTRL1		0x0004
+#define PP_CTRL2		0x0008
+#define PP_SRC_SIZE		0x000C
+#define PP_DROP_CTRL		0x0010
+#define PP_DES_SIZE		0x0014
+#define PP_Scale_Hratio		0x0018
+#define PP_Scale_Vratio		0x001C
+#define PP_Scale_limit		0x0020
+#define PP_SRC_Y_SA_NXT		0x0024
+#define PP_SRC_U_SA_NXT		0x0028
+#define PP_SRC_V_SA_NXT		0x002c
+#define PP_LOAD_NXT_PAR		0x0030
+#define PP_SRC_Y_SA0		0x0034
+#define PP_SRC_U_SA0		0x0038
+#define PP_SRC_V_SA0		0x003c
+#define PP_SRC_Y_OFS		0x0040
+#define PP_SRC_U_OFS		0x0044
+#define PP_SRC_V_OFS		0x0048
+#define PP_SRC_Y_SA1		0x004C
+#define PP_SRC_U_SA1		0x0050
+#define PP_SRC_V_SA1		0x0054
+#define PP_DES_Y_SA		0x0058
+#define PP_DES_U_SA		0x005C
+#define PP_DES_V_SA		0x0060
+#define PP_DES_Y_OFS		0x0064
+#define PP_DES_U_OFS		0x0068
+#define PP_DES_V_OFS		0x006C
+#define PP_INT_STATUS		0x0070
+#define PP_INT_MASK		0x0074
+#define PP_INT_CLR		0x0078
+#define PP_R2Y_COEF1		0x007C
+#define PP_R2Y_COEF2		0x0080
+
+/* Definition controller bit for LCDC registers */
+//for PP_SWITCH
+#define PP_TRIG			0
+//for PP_CTRL1
+#define PP_LCDPATH_EN		0
+#define PP_INTERLACE		1
+#define PP_POINTER_MODE		2
+#define PP_SRC_FORMAT_N		4
+#define PP_420_ITLC		7
+#define PP_DES_FORMAT		8
+#define PP_R2Y_BPS		12
+#define PP_MSCALE_BPS		13
+#define PP_Y2R_BPS		14
+#define PP_ARGB_ALPHA		16
+#define PP_UV_IN_ADD_128	24
+#define PP_UV_OUT_ADD_128	25
+#define PP_SRC_422_YUV_POS	26
+#define PP_SRC_420_YUV_POS	28
+#define PP_SRC_ARGB_ORDER	29
+//for PP_CTRL2
+#define PP_LOCK_EN		0
+#define PP_INT_INTERVAL		8
+#define PP_DES_422_ORDER	16
+#define PP_DES_420_ORDER	18
+//for PP_SRC_SIZE
+#define PP_SRC_HSIZE		0
+#define PP_SRC_VSIZE		16
+//for PP_DROP_CTRL
+#define PP_DROP_HRATION		0
+#define PP_DROP_VRATION		4
+//for PP_DES_SIZE
+#define PP_DES_HSIZE		0
+#define PP_DES_VSIZE		16
+//for PP_R2Y_COEF1
+#define PP_COEF_R1		0
+#define PP_COEF_G1		16
+//for PP_R2Y_COEF2
+#define PP_COEF_B1		0
+#define PP_OFFSET_1		16
+
+#define vout_rstgen_assert0_REG			0x0
+#define vout_rstgen_status0_REG			0x4
+#define clk_vout_apb_ctrl_REG			0x0
+#define clk_mapconv_apb_ctrl_REG		0x4
+#define clk_mapconv_axi_ctrl_REG		0x8
+#define clk_disp0_axi_ctrl_REG			0xC
+#define clk_disp1_axi_ctrl_REG			0x10
+#define clk_lcdc_oclk_ctrl_REG			0x14
+#define clk_lcdc_axi_ctrl_REG			0x18
+#define clk_vpp0_axi_ctrl_REG			0x1C
+#define clk_vpp1_axi_ctrl_REG			0x20
+#define clk_vpp2_axi_ctrl_REG			0x24
+#define clk_pixrawout_apb_ctrl_REG		0x28
+#define clk_pixrawout_axi_ctrl_REG		0x2C
+#define clk_csi2tx_strm0_pixclk_ctrl_REG	0x30
+#define clk_csi2tx_strm0_apb_ctrl_REG		0x34
+#define clk_dsi_sys_clk_ctrl_REG		0x38
+#define clk_dsi_apb_ctrl_REG			0x3C
+#define clk_ppi_tx_esc_clk_ctrl_REG		0x40
+
+void mapconv_pp0_sel(struct starfive_crtc *sf_crtc, int sel);
+void pp_src_addr_next(struct starfive_crtc *sf_crtc, int pp_num, int ysa, int usa, int vsa);
+void pp_src_offset_cfg(struct starfive_crtc *sf_crtc, int pp_num, int yoff, int uoff, int voff);
+void pp_nxt_addr_load(struct starfive_crtc *sf_crtc, int pp_num, int nxt_par, int nxt_pos);
+void pp_intcfg(struct starfive_crtc *sf_crtc, int pp_num, int int_mask);
+irqreturn_t vpp1_isr_handler(int this_irq, void *dev_id);
+void pp1_enable_intr(struct starfive_crtc *sf_crtc);
+void pp_enable_intr(struct starfive_crtc *sf_crtc, int pp_num);
+void pp_disable_intr(struct starfive_crtc *sf_crtc, int pp_num);
+void pp_run(struct starfive_crtc *sf_crtc, int pp_num, int start);
+int starfive_pp_enable(struct starfive_crtc *sf_crtc);
+int starfive_pp_get_2lcdc_id(struct starfive_crtc *sf_crtc);
+int starfive_pp_update(struct starfive_crtc *sf_crtc);
+void vout_disable(struct starfive_crtc *sf_crtc);
+void vout_reset(struct starfive_crtc *sf_crtc);
+void dsitx_vout_init(struct starfive_crtc *sf_crtc);
+
+#endif
diff --git a/include/soc/sifive/sifive_ccache.h b/include/soc/sifive/sifive_ccache.h
index 4d4ed49388a0..e34d5060eb99 100644
--- a/include/soc/sifive/sifive_ccache.h
+++ b/include/soc/sifive/sifive_ccache.h
@@ -13,4 +13,6 @@ extern int unregister_sifive_ccache_error_notifier(struct notifier_block *nb);
 #define SIFIVE_CCACHE_ERR_TYPE_CE 0
 #define SIFIVE_CCACHE_ERR_TYPE_UE 1
 
+void sifive_ccache_flush_range(phys_addr_t start, size_t len);
+
 #endif /* __SOC_SIFIVE_CCACHE_H */