Merging upstream version 6.10.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 684 insertions, 0 deletions

diff --git a/drivers/gpu/drm/mediatek/mtk_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_ddp_comp.c
new file mode 100644
index 0000000000..be66d94be3
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_ddp_comp.c
@@ -0,0 +1,684 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2015 MediaTek Inc.
+ * Authors:
+ *	YT Shen <yt.shen@mediatek.com>
+ *	CK Hu <ck.hu@mediatek.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/soc/mediatek/mtk-cmdq.h>
+#include <drm/drm_print.h>
+
+#include "mtk_crtc.h"
+#include "mtk_ddp_comp.h"
+#include "mtk_disp_drv.h"
+#include "mtk_drm_drv.h"
+#include "mtk_plane.h"
+
+
+#define DISP_REG_DITHER_EN			0x0000
+#define DITHER_EN				BIT(0)
+#define DISP_REG_DITHER_CFG			0x0020
+#define DITHER_RELAY_MODE			BIT(0)
+#define DITHER_ENGINE_EN			BIT(1)
+#define DISP_DITHERING				BIT(2)
+#define DISP_REG_DITHER_SIZE			0x0030
+#define DISP_REG_DITHER_5			0x0114
+#define DISP_REG_DITHER_7			0x011c
+#define DISP_REG_DITHER_15			0x013c
+#define DITHER_LSB_ERR_SHIFT_R(x)		(((x) & 0x7) << 28)
+#define DITHER_ADD_LSHIFT_R(x)			(((x) & 0x7) << 20)
+#define DITHER_NEW_BIT_MODE			BIT(0)
+#define DISP_REG_DITHER_16			0x0140
+#define DITHER_LSB_ERR_SHIFT_B(x)		(((x) & 0x7) << 28)
+#define DITHER_ADD_LSHIFT_B(x)			(((x) & 0x7) << 20)
+#define DITHER_LSB_ERR_SHIFT_G(x)		(((x) & 0x7) << 12)
+#define DITHER_ADD_LSHIFT_G(x)			(((x) & 0x7) << 4)
+
+#define DISP_REG_DSC_CON			0x0000
+#define DSC_EN					BIT(0)
+#define DSC_DUAL_INOUT				BIT(2)
+#define DSC_BYPASS				BIT(4)
+#define DSC_UFOE_SEL				BIT(16)
+
+#define DISP_REG_OD_EN				0x0000
+#define DISP_REG_OD_CFG				0x0020
+#define OD_RELAYMODE				BIT(0)
+#define DISP_REG_OD_SIZE			0x0030
+
+#define DISP_REG_POSTMASK_EN			0x0000
+#define POSTMASK_EN					BIT(0)
+#define DISP_REG_POSTMASK_CFG			0x0020
+#define POSTMASK_RELAY_MODE				BIT(0)
+#define DISP_REG_POSTMASK_SIZE			0x0030
+
+#define DISP_REG_UFO_START			0x0000
+#define UFO_BYPASS				BIT(2)
+
+struct mtk_ddp_comp_dev {
+	struct clk *clk;
+	void __iomem *regs;
+	struct cmdq_client_reg cmdq_reg;
+};
+
+void mtk_ddp_write(struct cmdq_pkt *cmdq_pkt, unsigned int value,
+		   struct cmdq_client_reg *cmdq_reg, void __iomem *regs,
+		   unsigned int offset)
+{
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+	if (cmdq_pkt)
+		cmdq_pkt_write(cmdq_pkt, cmdq_reg->subsys,
+			       cmdq_reg->offset + offset, value);
+	else
+#endif
+		writel(value, regs + offset);
+}
+
+void mtk_ddp_write_relaxed(struct cmdq_pkt *cmdq_pkt, unsigned int value,
+			   struct cmdq_client_reg *cmdq_reg, void __iomem *regs,
+			   unsigned int offset)
+{
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+	if (cmdq_pkt)
+		cmdq_pkt_write(cmdq_pkt, cmdq_reg->subsys,
+			       cmdq_reg->offset + offset, value);
+	else
+#endif
+		writel_relaxed(value, regs + offset);
+}
+
+void mtk_ddp_write_mask(struct cmdq_pkt *cmdq_pkt, unsigned int value,
+			struct cmdq_client_reg *cmdq_reg, void __iomem *regs,
+			unsigned int offset, unsigned int mask)
+{
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+	if (cmdq_pkt) {
+		cmdq_pkt_write_mask(cmdq_pkt, cmdq_reg->subsys,
+				    cmdq_reg->offset + offset, value, mask);
+	} else {
+#endif
+		u32 tmp = readl(regs + offset);
+
+		tmp = (tmp & ~mask) | (value & mask);
+		writel(tmp, regs + offset);
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+	}
+#endif
+}
+
+static int mtk_ddp_clk_enable(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	return clk_prepare_enable(priv->clk);
+}
+
+static void mtk_ddp_clk_disable(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(priv->clk);
+}
+
+void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg,
+			   unsigned int bpc, unsigned int cfg,
+			   unsigned int dither_en, struct cmdq_pkt *cmdq_pkt)
+{
+	/* If bpc equal to 0, the dithering function didn't be enabled */
+	if (bpc == 0)
+		return;
+
+	if (bpc >= MTK_MIN_BPC) {
+		mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_REG_DITHER_5);
+		mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_REG_DITHER_7);
+		mtk_ddp_write(cmdq_pkt,
+			      DITHER_LSB_ERR_SHIFT_R(MTK_MAX_BPC - bpc) |
+			      DITHER_ADD_LSHIFT_R(MTK_MAX_BPC - bpc) |
+			      DITHER_NEW_BIT_MODE,
+			      cmdq_reg, regs, DISP_REG_DITHER_15);
+		mtk_ddp_write(cmdq_pkt,
+			      DITHER_LSB_ERR_SHIFT_B(MTK_MAX_BPC - bpc) |
+			      DITHER_ADD_LSHIFT_B(MTK_MAX_BPC - bpc) |
+			      DITHER_LSB_ERR_SHIFT_G(MTK_MAX_BPC - bpc) |
+			      DITHER_ADD_LSHIFT_G(MTK_MAX_BPC - bpc),
+			      cmdq_reg, regs, DISP_REG_DITHER_16);
+		mtk_ddp_write(cmdq_pkt, dither_en, cmdq_reg, regs, cfg);
+	}
+}
+
+static void mtk_dither_config(struct device *dev, unsigned int w,
+			      unsigned int h, unsigned int vrefresh,
+			      unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	mtk_ddp_write(cmdq_pkt, w << 16 | h, &priv->cmdq_reg, priv->regs, DISP_REG_DITHER_SIZE);
+	mtk_ddp_write(cmdq_pkt, DITHER_RELAY_MODE, &priv->cmdq_reg, priv->regs,
+		      DISP_REG_DITHER_CFG);
+	mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, DISP_REG_DITHER_CFG,
+			      DITHER_ENGINE_EN, cmdq_pkt);
+}
+
+static void mtk_dither_start(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	writel(DITHER_EN, priv->regs + DISP_REG_DITHER_EN);
+}
+
+static void mtk_dither_stop(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	writel_relaxed(0x0, priv->regs + DISP_REG_DITHER_EN);
+}
+
+static void mtk_dither_set(struct device *dev, unsigned int bpc,
+			   unsigned int cfg, struct cmdq_pkt *cmdq_pkt)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, cfg,
+			      DISP_DITHERING, cmdq_pkt);
+}
+
+static void mtk_dsc_config(struct device *dev, unsigned int w,
+			   unsigned int h, unsigned int vrefresh,
+			   unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	/* dsc bypass mode */
+	mtk_ddp_write_mask(cmdq_pkt, DSC_BYPASS, &priv->cmdq_reg, priv->regs,
+			   DISP_REG_DSC_CON, DSC_BYPASS);
+	mtk_ddp_write_mask(cmdq_pkt, DSC_UFOE_SEL, &priv->cmdq_reg, priv->regs,
+			   DISP_REG_DSC_CON, DSC_UFOE_SEL);
+	mtk_ddp_write_mask(cmdq_pkt, DSC_DUAL_INOUT, &priv->cmdq_reg, priv->regs,
+			   DISP_REG_DSC_CON, DSC_DUAL_INOUT);
+}
+
+static void mtk_dsc_start(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	/* write with mask to reserve the value set in mtk_dsc_config */
+	mtk_ddp_write_mask(NULL, DSC_EN, &priv->cmdq_reg, priv->regs, DISP_REG_DSC_CON, DSC_EN);
+}
+
+static void mtk_dsc_stop(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	writel_relaxed(0x0, priv->regs + DISP_REG_DSC_CON);
+}
+
+static void mtk_od_config(struct device *dev, unsigned int w,
+			  unsigned int h, unsigned int vrefresh,
+			  unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	mtk_ddp_write(cmdq_pkt, w << 16 | h, &priv->cmdq_reg, priv->regs, DISP_REG_OD_SIZE);
+	mtk_ddp_write(cmdq_pkt, OD_RELAYMODE, &priv->cmdq_reg, priv->regs, DISP_REG_OD_CFG);
+	mtk_dither_set(dev, bpc, DISP_REG_OD_CFG, cmdq_pkt);
+}
+
+static void mtk_od_start(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	writel(1, priv->regs + DISP_REG_OD_EN);
+}
+
+static void mtk_postmask_config(struct device *dev, unsigned int w,
+				unsigned int h, unsigned int vrefresh,
+				unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	mtk_ddp_write(cmdq_pkt, w << 16 | h, &priv->cmdq_reg, priv->regs,
+		      DISP_REG_POSTMASK_SIZE);
+	mtk_ddp_write(cmdq_pkt, POSTMASK_RELAY_MODE, &priv->cmdq_reg,
+		      priv->regs, DISP_REG_POSTMASK_CFG);
+}
+
+static void mtk_postmask_start(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	writel(POSTMASK_EN, priv->regs + DISP_REG_POSTMASK_EN);
+}
+
+static void mtk_postmask_stop(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	writel_relaxed(0x0, priv->regs + DISP_REG_POSTMASK_EN);
+}
+
+static void mtk_ufoe_start(struct device *dev)
+{
+	struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
+
+	writel(UFO_BYPASS, priv->regs + DISP_REG_UFO_START);
+}
+
+static const struct mtk_ddp_comp_funcs ddp_aal = {
+	.clk_enable = mtk_aal_clk_enable,
+	.clk_disable = mtk_aal_clk_disable,
+	.gamma_get_lut_size = mtk_aal_gamma_get_lut_size,
+	.gamma_set = mtk_aal_gamma_set,
+	.config = mtk_aal_config,
+	.start = mtk_aal_start,
+	.stop = mtk_aal_stop,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_ccorr = {
+	.clk_enable = mtk_ccorr_clk_enable,
+	.clk_disable = mtk_ccorr_clk_disable,
+	.config = mtk_ccorr_config,
+	.start = mtk_ccorr_start,
+	.stop = mtk_ccorr_stop,
+	.ctm_set = mtk_ccorr_ctm_set,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_color = {
+	.clk_enable = mtk_color_clk_enable,
+	.clk_disable = mtk_color_clk_disable,
+	.config = mtk_color_config,
+	.start = mtk_color_start,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_dither = {
+	.clk_enable = mtk_ddp_clk_enable,
+	.clk_disable = mtk_ddp_clk_disable,
+	.config = mtk_dither_config,
+	.start = mtk_dither_start,
+	.stop = mtk_dither_stop,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_dpi = {
+	.start = mtk_dpi_start,
+	.stop = mtk_dpi_stop,
+	.encoder_index = mtk_dpi_encoder_index,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_dsc = {
+	.clk_enable = mtk_ddp_clk_enable,
+	.clk_disable = mtk_ddp_clk_disable,
+	.config = mtk_dsc_config,
+	.start = mtk_dsc_start,
+	.stop = mtk_dsc_stop,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_dsi = {
+	.start = mtk_dsi_ddp_start,
+	.stop = mtk_dsi_ddp_stop,
+	.encoder_index = mtk_dsi_encoder_index,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_gamma = {
+	.clk_enable = mtk_gamma_clk_enable,
+	.clk_disable = mtk_gamma_clk_disable,
+	.gamma_get_lut_size = mtk_gamma_get_lut_size,
+	.gamma_set = mtk_gamma_set,
+	.config = mtk_gamma_config,
+	.start = mtk_gamma_start,
+	.stop = mtk_gamma_stop,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_merge = {
+	.clk_enable = mtk_merge_clk_enable,
+	.clk_disable = mtk_merge_clk_disable,
+	.start = mtk_merge_start,
+	.stop = mtk_merge_stop,
+	.config = mtk_merge_config,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_od = {
+	.clk_enable = mtk_ddp_clk_enable,
+	.clk_disable = mtk_ddp_clk_disable,
+	.config = mtk_od_config,
+	.start = mtk_od_start,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_ovl = {
+	.clk_enable = mtk_ovl_clk_enable,
+	.clk_disable = mtk_ovl_clk_disable,
+	.config = mtk_ovl_config,
+	.start = mtk_ovl_start,
+	.stop = mtk_ovl_stop,
+	.register_vblank_cb = mtk_ovl_register_vblank_cb,
+	.unregister_vblank_cb = mtk_ovl_unregister_vblank_cb,
+	.enable_vblank = mtk_ovl_enable_vblank,
+	.disable_vblank = mtk_ovl_disable_vblank,
+	.supported_rotations = mtk_ovl_supported_rotations,
+	.layer_nr = mtk_ovl_layer_nr,
+	.layer_check = mtk_ovl_layer_check,
+	.layer_config = mtk_ovl_layer_config,
+	.bgclr_in_on = mtk_ovl_bgclr_in_on,
+	.bgclr_in_off = mtk_ovl_bgclr_in_off,
+	.get_formats = mtk_ovl_get_formats,
+	.get_num_formats = mtk_ovl_get_num_formats,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_postmask = {
+	.clk_enable = mtk_ddp_clk_enable,
+	.clk_disable = mtk_ddp_clk_disable,
+	.config = mtk_postmask_config,
+	.start = mtk_postmask_start,
+	.stop = mtk_postmask_stop,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_rdma = {
+	.clk_enable = mtk_rdma_clk_enable,
+	.clk_disable = mtk_rdma_clk_disable,
+	.config = mtk_rdma_config,
+	.start = mtk_rdma_start,
+	.stop = mtk_rdma_stop,
+	.register_vblank_cb = mtk_rdma_register_vblank_cb,
+	.unregister_vblank_cb = mtk_rdma_unregister_vblank_cb,
+	.enable_vblank = mtk_rdma_enable_vblank,
+	.disable_vblank = mtk_rdma_disable_vblank,
+	.layer_nr = mtk_rdma_layer_nr,
+	.layer_config = mtk_rdma_layer_config,
+	.get_formats = mtk_rdma_get_formats,
+	.get_num_formats = mtk_rdma_get_num_formats,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_ufoe = {
+	.clk_enable = mtk_ddp_clk_enable,
+	.clk_disable = mtk_ddp_clk_disable,
+	.start = mtk_ufoe_start,
+};
+
+static const struct mtk_ddp_comp_funcs ddp_ovl_adaptor = {
+	.power_on = mtk_ovl_adaptor_power_on,
+	.power_off = mtk_ovl_adaptor_power_off,
+	.clk_enable = mtk_ovl_adaptor_clk_enable,
+	.clk_disable = mtk_ovl_adaptor_clk_disable,
+	.config = mtk_ovl_adaptor_config,
+	.start = mtk_ovl_adaptor_start,
+	.stop = mtk_ovl_adaptor_stop,
+	.layer_nr = mtk_ovl_adaptor_layer_nr,
+	.layer_config = mtk_ovl_adaptor_layer_config,
+	.register_vblank_cb = mtk_ovl_adaptor_register_vblank_cb,
+	.unregister_vblank_cb = mtk_ovl_adaptor_unregister_vblank_cb,
+	.enable_vblank = mtk_ovl_adaptor_enable_vblank,
+	.disable_vblank = mtk_ovl_adaptor_disable_vblank,
+	.dma_dev_get = mtk_ovl_adaptor_dma_dev_get,
+	.connect = mtk_ovl_adaptor_connect,
+	.disconnect = mtk_ovl_adaptor_disconnect,
+	.add = mtk_ovl_adaptor_add_comp,
+	.remove = mtk_ovl_adaptor_remove_comp,
+	.get_formats = mtk_ovl_adaptor_get_formats,
+	.get_num_formats = mtk_ovl_adaptor_get_num_formats,
+	.mode_valid = mtk_ovl_adaptor_mode_valid,
+};
+
+static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = {
+	[MTK_DISP_AAL] = "aal",
+	[MTK_DISP_BLS] = "bls",
+	[MTK_DISP_CCORR] = "ccorr",
+	[MTK_DISP_COLOR] = "color",
+	[MTK_DISP_DITHER] = "dither",
+	[MTK_DISP_DSC] = "dsc",
+	[MTK_DISP_GAMMA] = "gamma",
+	[MTK_DISP_MERGE] = "merge",
+	[MTK_DISP_MUTEX] = "mutex",
+	[MTK_DISP_OD] = "od",
+	[MTK_DISP_OVL] = "ovl",
+	[MTK_DISP_OVL_2L] = "ovl-2l",
+	[MTK_DISP_OVL_ADAPTOR] = "ovl_adaptor",
+	[MTK_DISP_POSTMASK] = "postmask",
+	[MTK_DISP_PWM] = "pwm",
+	[MTK_DISP_RDMA] = "rdma",
+	[MTK_DISP_UFOE] = "ufoe",
+	[MTK_DISP_WDMA] = "wdma",
+	[MTK_DP_INTF] = "dp-intf",
+	[MTK_DPI] = "dpi",
+	[MTK_DSI] = "dsi",
+};
+
+struct mtk_ddp_comp_match {
+	enum mtk_ddp_comp_type type;
+	int alias_id;
+	const struct mtk_ddp_comp_funcs *funcs;
+};
+
+static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_DRM_ID_MAX] = {
+	[DDP_COMPONENT_AAL0]		= { MTK_DISP_AAL,		0, &ddp_aal },
+	[DDP_COMPONENT_AAL1]		= { MTK_DISP_AAL,		1, &ddp_aal },
+	[DDP_COMPONENT_BLS]		= { MTK_DISP_BLS,		0, NULL },
+	[DDP_COMPONENT_CCORR]		= { MTK_DISP_CCORR,		0, &ddp_ccorr },
+	[DDP_COMPONENT_COLOR0]		= { MTK_DISP_COLOR,		0, &ddp_color },
+	[DDP_COMPONENT_COLOR1]		= { MTK_DISP_COLOR,		1, &ddp_color },
+	[DDP_COMPONENT_DITHER0]		= { MTK_DISP_DITHER,		0, &ddp_dither },
+	[DDP_COMPONENT_DP_INTF0]	= { MTK_DP_INTF,		0, &ddp_dpi },
+	[DDP_COMPONENT_DP_INTF1]	= { MTK_DP_INTF,		1, &ddp_dpi },
+	[DDP_COMPONENT_DPI0]		= { MTK_DPI,			0, &ddp_dpi },
+	[DDP_COMPONENT_DPI1]		= { MTK_DPI,			1, &ddp_dpi },
+	[DDP_COMPONENT_DRM_OVL_ADAPTOR]	= { MTK_DISP_OVL_ADAPTOR,	0, &ddp_ovl_adaptor },
+	[DDP_COMPONENT_DSC0]		= { MTK_DISP_DSC,		0, &ddp_dsc },
+	[DDP_COMPONENT_DSC1]		= { MTK_DISP_DSC,		1, &ddp_dsc },
+	[DDP_COMPONENT_DSI0]		= { MTK_DSI,			0, &ddp_dsi },
+	[DDP_COMPONENT_DSI1]		= { MTK_DSI,			1, &ddp_dsi },
+	[DDP_COMPONENT_DSI2]		= { MTK_DSI,			2, &ddp_dsi },
+	[DDP_COMPONENT_DSI3]		= { MTK_DSI,			3, &ddp_dsi },
+	[DDP_COMPONENT_GAMMA]		= { MTK_DISP_GAMMA,		0, &ddp_gamma },
+	[DDP_COMPONENT_MERGE0]		= { MTK_DISP_MERGE,		0, &ddp_merge },
+	[DDP_COMPONENT_MERGE1]		= { MTK_DISP_MERGE,		1, &ddp_merge },
+	[DDP_COMPONENT_MERGE2]		= { MTK_DISP_MERGE,		2, &ddp_merge },
+	[DDP_COMPONENT_MERGE3]		= { MTK_DISP_MERGE,		3, &ddp_merge },
+	[DDP_COMPONENT_MERGE4]		= { MTK_DISP_MERGE,		4, &ddp_merge },
+	[DDP_COMPONENT_MERGE5]		= { MTK_DISP_MERGE,		5, &ddp_merge },
+	[DDP_COMPONENT_OD0]		= { MTK_DISP_OD,		0, &ddp_od },
+	[DDP_COMPONENT_OD1]		= { MTK_DISP_OD,		1, &ddp_od },
+	[DDP_COMPONENT_OVL0]		= { MTK_DISP_OVL,		0, &ddp_ovl },
+	[DDP_COMPONENT_OVL1]		= { MTK_DISP_OVL,		1, &ddp_ovl },
+	[DDP_COMPONENT_OVL_2L0]		= { MTK_DISP_OVL_2L,		0, &ddp_ovl },
+	[DDP_COMPONENT_OVL_2L1]		= { MTK_DISP_OVL_2L,		1, &ddp_ovl },
+	[DDP_COMPONENT_OVL_2L2]		= { MTK_DISP_OVL_2L,		2, &ddp_ovl },
+	[DDP_COMPONENT_POSTMASK0]	= { MTK_DISP_POSTMASK,		0, &ddp_postmask },
+	[DDP_COMPONENT_PWM0]		= { MTK_DISP_PWM,		0, NULL },
+	[DDP_COMPONENT_PWM1]		= { MTK_DISP_PWM,		1, NULL },
+	[DDP_COMPONENT_PWM2]		= { MTK_DISP_PWM,		2, NULL },
+	[DDP_COMPONENT_RDMA0]		= { MTK_DISP_RDMA,		0, &ddp_rdma },
+	[DDP_COMPONENT_RDMA1]		= { MTK_DISP_RDMA,		1, &ddp_rdma },
+	[DDP_COMPONENT_RDMA2]		= { MTK_DISP_RDMA,		2, &ddp_rdma },
+	[DDP_COMPONENT_RDMA4]		= { MTK_DISP_RDMA,		4, &ddp_rdma },
+	[DDP_COMPONENT_UFOE]		= { MTK_DISP_UFOE,		0, &ddp_ufoe },
+	[DDP_COMPONENT_WDMA0]		= { MTK_DISP_WDMA,		0, NULL },
+	[DDP_COMPONENT_WDMA1]		= { MTK_DISP_WDMA,		1, NULL },
+};
+
+static bool mtk_ddp_comp_find(struct device *dev,
+			      const unsigned int *path,
+			      unsigned int path_len,
+			      struct mtk_ddp_comp *ddp_comp)
+{
+	unsigned int i;
+
+	if (path == NULL)
+		return false;
+
+	for (i = 0U; i < path_len; i++)
+		if (dev == ddp_comp[path[i]].dev)
+			return true;
+
+	return false;
+}
+
+static int mtk_ddp_comp_find_in_route(struct device *dev,
+				      const struct mtk_drm_route *routes,
+				      unsigned int num_routes,
+				      struct mtk_ddp_comp *ddp_comp)
+{
+	unsigned int i;
+
+	if (!routes)
+		return -EINVAL;
+
+	for (i = 0; i < num_routes; i++)
+		if (dev == ddp_comp[routes[i].route_ddp].dev)
+			return BIT(routes[i].crtc_id);
+
+	return -ENODEV;
+}
+
+static bool mtk_ddp_path_available(const unsigned int *path,
+				   unsigned int path_len,
+				   struct device_node **comp_node)
+{
+	unsigned int i;
+
+	if (!path || !path_len)
+		return false;
+
+	for (i = 0U; i < path_len; i++) {
+		/* OVL_ADAPTOR doesn't have a device node */
+		if (path[i] == DDP_COMPONENT_DRM_OVL_ADAPTOR)
+			continue;
+
+		if (!comp_node[path[i]])
+			return false;
+	}
+
+	return true;
+}
+
+int mtk_ddp_comp_get_id(struct device_node *node,
+			enum mtk_ddp_comp_type comp_type)
+{
+	int id = of_alias_get_id(node, mtk_ddp_comp_stem[comp_type]);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mtk_ddp_matches); i++) {
+		if (comp_type == mtk_ddp_matches[i].type &&
+		    (id < 0 || id == mtk_ddp_matches[i].alias_id))
+			return i;
+	}
+
+	return -EINVAL;
+}
+
+int mtk_find_possible_crtcs(struct drm_device *drm, struct device *dev)
+{
+	struct mtk_drm_private *private = drm->dev_private;
+	const struct mtk_mmsys_driver_data *data;
+	struct mtk_drm_private *priv_n;
+	int i = 0, j;
+	int ret;
+
+	for (j = 0; j < private->data->mmsys_dev_num; j++) {
+		priv_n = private->all_drm_private[j];
+		data = priv_n->data;
+
+		if (mtk_ddp_path_available(data->main_path, data->main_len,
+					   priv_n->comp_node)) {
+			if (mtk_ddp_comp_find(dev, data->main_path,
+					      data->main_len,
+					      priv_n->ddp_comp))
+				return BIT(i);
+			i++;
+		}
+
+		if (mtk_ddp_path_available(data->ext_path, data->ext_len,
+					   priv_n->comp_node)) {
+			if (mtk_ddp_comp_find(dev, data->ext_path,
+					      data->ext_len,
+					      priv_n->ddp_comp))
+				return BIT(i);
+			i++;
+		}
+
+		if (mtk_ddp_path_available(data->third_path, data->third_len,
+					   priv_n->comp_node)) {
+			if (mtk_ddp_comp_find(dev, data->third_path,
+					      data->third_len,
+					      priv_n->ddp_comp))
+				return BIT(i);
+			i++;
+		}
+	}
+
+	ret = mtk_ddp_comp_find_in_route(dev,
+					 private->data->conn_routes,
+					 private->data->num_conn_routes,
+					 private->ddp_comp);
+
+	if (ret < 0)
+		DRM_INFO("Failed to find comp in ddp table, ret = %d\n", ret);
+
+	return ret;
+}
+
+int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp,
+		      unsigned int comp_id)
+{
+	struct platform_device *comp_pdev;
+	enum mtk_ddp_comp_type type;
+	struct mtk_ddp_comp_dev *priv;
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+	int ret;
+#endif
+
+	if (comp_id >= DDP_COMPONENT_DRM_ID_MAX)
+		return -EINVAL;
+
+	type = mtk_ddp_matches[comp_id].type;
+
+	comp->id = comp_id;
+	comp->funcs = mtk_ddp_matches[comp_id].funcs;
+	/* Not all drm components have a DTS device node, such as ovl_adaptor,
+	 * which is the drm bring up sub driver
+	 */
+	if (!node)
+		return 0;
+
+	comp_pdev = of_find_device_by_node(node);
+	if (!comp_pdev) {
+		DRM_INFO("Waiting for device %s\n", node->full_name);
+		return -EPROBE_DEFER;
+	}
+	comp->dev = &comp_pdev->dev;
+
+	if (type == MTK_DISP_AAL ||
+	    type == MTK_DISP_BLS ||
+	    type == MTK_DISP_CCORR ||
+	    type == MTK_DISP_COLOR ||
+	    type == MTK_DISP_GAMMA ||
+	    type == MTK_DISP_MERGE ||
+	    type == MTK_DISP_OVL ||
+	    type == MTK_DISP_OVL_2L ||
+	    type == MTK_DISP_PWM ||
+	    type == MTK_DISP_RDMA ||
+	    type == MTK_DPI ||
+	    type == MTK_DP_INTF ||
+	    type == MTK_DSI)
+		return 0;
+
+	priv = devm_kzalloc(comp->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->regs = of_iomap(node, 0);
+	priv->clk = of_clk_get(node, 0);
+	if (IS_ERR(priv->clk))
+		return PTR_ERR(priv->clk);
+
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+	ret = cmdq_dev_get_client_reg(comp->dev, &priv->cmdq_reg, 0);
+	if (ret)
+		dev_dbg(comp->dev, "get mediatek,gce-client-reg fail!\n");
+#endif
+
+	platform_set_drvdata(comp_pdev, priv);
+
+	return 0;
+}