Merge commit 'refs/for-upstream/mali-dp' of git://linux-arm.org/linux-ld into drm-next

This pull requests adds initial Mali D71 support into the Arm "komeda" DRM
driver. The code has been reviewed at the end of last year, I just been
too slow with pushing it into mainline. Since it started baking in
linux-next we had a kbuild-bot issue raised and one from Joe Perches on
the MAINTAINERS entry, for which I'm including fixes here.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Liviu Dudau <Liviu.Dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401192833.GW21747@e110455-lin.cambridge.arm.com

14 files changed, 1983 insertions, 31 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index dcf0b4f65fbe..e6d476bf9e78 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1167,7 +1167,7 @@ S:	Supported
 T:	git git://linux-arm.org/linux-ld.git for-upstream/mali-dp
 F:	drivers/gpu/drm/arm/display/include/
 F:	drivers/gpu/drm/arm/display/komeda/
-F:	Documentation/devicetree/bindings/display/arm/arm,komeda.txt
+F:	Documentation/devicetree/bindings/display/arm,komeda.txt
 F:	Documentation/gpu/komeda-kms.rst
 
 ARM MALI-DP DRM DRIVER
diff --git a/drivers/gpu/drm/arm/display/include/malidp_utils.h b/drivers/gpu/drm/arm/display/include/malidp_utils.h
index 63cc47cefcf8..8cfd91196e15 100644
--- a/drivers/gpu/drm/arm/display/include/malidp_utils.h
+++ b/drivers/gpu/drm/arm/display/include/malidp_utils.h
@@ -7,10 +7,41 @@
 #ifndef _MALIDP_UTILS_
 #define _MALIDP_UTILS_
 
+#include <linux/delay.h>
+
 #define has_bit(nr, mask)	(BIT(nr) & (mask))
 #define has_bits(bits, mask)	(((bits) & (mask)) == (bits))
 
 #define dp_for_each_set_bit(bit, mask) \
 	for_each_set_bit((bit), ((unsigned long *)&(mask)), sizeof(mask) * 8)
 
+#define dp_wait_cond(__cond, __tries, __min_range, __max_range)	\
+({							\
+	int num_tries = __tries;			\
+	while (!__cond && (num_tries > 0)) {		\
+		usleep_range(__min_range, __max_range);	\
+		if (__cond)				\
+			break;				\
+		num_tries--;				\
+	}						\
+	num_tries;					\
+})
+
+/* the restriction of range is [start, end] */
+struct malidp_range {
+	u32 start;
+	u32 end;
+};
+
+static inline void set_range(struct malidp_range *rg, u32 start, u32 end)
+{
+	rg->start = start;
+	rg->end   = end;
+}
+
+static inline bool in_range(struct malidp_range *rg, u32 v)
+{
+	return (v >= rg->start) && (v <= rg->end);
+}
+
 #endif /* _MALIDP_UTILS_ */
diff --git a/drivers/gpu/drm/arm/display/komeda/Makefile b/drivers/gpu/drm/arm/display/komeda/Makefile
index 1b875e5dc0f6..d593125236ae 100644
--- a/drivers/gpu/drm/arm/display/komeda/Makefile
+++ b/drivers/gpu/drm/arm/display/komeda/Makefile
@@ -16,6 +16,7 @@ komeda-y := \
 	komeda_private_obj.o
 
 komeda-y += \
-	d71/d71_dev.o
+	d71/d71_dev.o \
+	d71/d71_component.o
 
 obj-$(CONFIG_DRM_KOMEDA) += komeda.o
diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
new file mode 100644
index 000000000000..c56cfc2de147
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
@@ -0,0 +1,684 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+
+#include <drm/drm_print.h>
+#include "d71_dev.h"
+#include "komeda_kms.h"
+#include "malidp_io.h"
+#include "komeda_framebuffer.h"
+
+static void get_resources_id(u32 hw_id, u32 *pipe_id, u32 *comp_id)
+{
+	u32 id = BLOCK_INFO_BLK_ID(hw_id);
+	u32 pipe = id;
+
+	switch (BLOCK_INFO_BLK_TYPE(hw_id)) {
+	case D71_BLK_TYPE_LPU_WB_LAYER:
+		id = KOMEDA_COMPONENT_WB_LAYER;
+		break;
+	case D71_BLK_TYPE_CU_SPLITTER:
+		id = KOMEDA_COMPONENT_SPLITTER;
+		break;
+	case D71_BLK_TYPE_CU_SCALER:
+		pipe = id / D71_PIPELINE_MAX_SCALERS;
+		id %= D71_PIPELINE_MAX_SCALERS;
+		id += KOMEDA_COMPONENT_SCALER0;
+		break;
+	case D71_BLK_TYPE_CU:
+		id += KOMEDA_COMPONENT_COMPIZ0;
+		break;
+	case D71_BLK_TYPE_LPU_LAYER:
+		pipe = id / D71_PIPELINE_MAX_LAYERS;
+		id %= D71_PIPELINE_MAX_LAYERS;
+		id += KOMEDA_COMPONENT_LAYER0;
+		break;
+	case D71_BLK_TYPE_DOU_IPS:
+		id += KOMEDA_COMPONENT_IPS0;
+		break;
+	case D71_BLK_TYPE_CU_MERGER:
+		id = KOMEDA_COMPONENT_MERGER;
+		break;
+	case D71_BLK_TYPE_DOU:
+		id = KOMEDA_COMPONENT_TIMING_CTRLR;
+		break;
+	default:
+		id = 0xFFFFFFFF;
+	}
+
+	if (comp_id)
+		*comp_id = id;
+
+	if (pipe_id)
+		*pipe_id = pipe;
+}
+
+static u32 get_valid_inputs(struct block_header *blk)
+{
+	u32 valid_inputs = 0, comp_id;
+	int i;
+
+	for (i = 0; i < PIPELINE_INFO_N_VALID_INPUTS(blk->pipeline_info); i++) {
+		get_resources_id(blk->input_ids[i], NULL, &comp_id);
+		if (comp_id == 0xFFFFFFFF)
+			continue;
+		valid_inputs |= BIT(comp_id);
+	}
+
+	return valid_inputs;
+}
+
+static void get_values_from_reg(void __iomem *reg, u32 offset,
+				u32 count, u32 *val)
+{
+	u32 i, addr;
+
+	for (i = 0; i < count; i++) {
+		addr = offset + (i << 2);
+		/* 0xA4 is WO register */
+		if (addr != 0xA4)
+			val[i] = malidp_read32(reg, addr);
+		else
+			val[i] = 0xDEADDEAD;
+	}
+}
+
+static void dump_block_header(struct seq_file *sf, void __iomem *reg)
+{
+	struct block_header hdr;
+	u32 i, n_input, n_output;
+
+	d71_read_block_header(reg, &hdr);
+	seq_printf(sf, "BLOCK_INFO:\t\t0x%X\n", hdr.block_info);
+	seq_printf(sf, "PIPELINE_INFO:\t\t0x%X\n", hdr.pipeline_info);
+
+	n_output = PIPELINE_INFO_N_OUTPUTS(hdr.pipeline_info);
+	n_input  = PIPELINE_INFO_N_VALID_INPUTS(hdr.pipeline_info);
+
+	for (i = 0; i < n_input; i++)
+		seq_printf(sf, "VALID_INPUT_ID%u:\t0x%X\n",
+			   i, hdr.input_ids[i]);
+
+	for (i = 0; i < n_output; i++)
+		seq_printf(sf, "OUTPUT_ID%u:\t\t0x%X\n",
+			   i, hdr.output_ids[i]);
+}
+
+static u32 to_rot_ctrl(u32 rot)
+{
+	u32 lr_ctrl = 0;
+
+	switch (rot & DRM_MODE_ROTATE_MASK) {
+	case DRM_MODE_ROTATE_0:
+		lr_ctrl |= L_ROT(L_ROT_R0);
+		break;
+	case DRM_MODE_ROTATE_90:
+		lr_ctrl |= L_ROT(L_ROT_R90);
+		break;
+	case DRM_MODE_ROTATE_180:
+		lr_ctrl |= L_ROT(L_ROT_R180);
+		break;
+	case DRM_MODE_ROTATE_270:
+		lr_ctrl |= L_ROT(L_ROT_R270);
+		break;
+	}
+
+	if (rot & DRM_MODE_REFLECT_X)
+		lr_ctrl |= L_HFLIP;
+	if (rot & DRM_MODE_REFLECT_Y)
+		lr_ctrl |= L_VFLIP;
+
+	return lr_ctrl;
+}
+
+static inline u32 to_d71_input_id(struct komeda_component_output *output)
+{
+	struct komeda_component *comp = output->component;
+
+	return comp ? (comp->hw_id + output->output_port) : 0;
+}
+
+static void d71_layer_disable(struct komeda_component *c)
+{
+	malidp_write32_mask(c->reg, BLK_CONTROL, L_EN, 0);
+}
+
+static void d71_layer_update(struct komeda_component *c,
+			     struct komeda_component_state *state)
+{
+	struct komeda_layer_state *st = to_layer_st(state);
+	struct drm_plane_state *plane_st = state->plane->state;
+	struct drm_framebuffer *fb = plane_st->fb;
+	struct komeda_fb *kfb = to_kfb(fb);
+	u32 __iomem *reg = c->reg;
+	u32 ctrl_mask = L_EN | L_ROT(L_ROT_R270) | L_HFLIP | L_VFLIP | L_TBU_EN;
+	u32 ctrl = L_EN | to_rot_ctrl(st->rot);
+	int i;
+
+	for (i = 0; i < fb->format->num_planes; i++) {
+		malidp_write32(reg,
+			       BLK_P0_PTR_LOW + i * LAYER_PER_PLANE_REGS * 4,
+			       lower_32_bits(st->addr[i]));
+		malidp_write32(reg,
+			       BLK_P0_PTR_HIGH + i * LAYER_PER_PLANE_REGS * 4,
+			       upper_32_bits(st->addr[i]));
+		if (i >= 2)
+			break;
+
+		malidp_write32(reg,
+			       BLK_P0_STRIDE + i * LAYER_PER_PLANE_REGS * 4,
+			       fb->pitches[i] & 0xFFFF);
+	}
+
+	malidp_write32(reg, LAYER_FMT, kfb->format_caps->hw_id);
+	malidp_write32(reg, BLK_IN_SIZE, HV_SIZE(st->hsize, st->vsize));
+
+	malidp_write32_mask(reg, BLK_CONTROL, ctrl_mask, ctrl);
+}
+
+static void d71_layer_dump(struct komeda_component *c, struct seq_file *sf)
+{
+	u32 v[15], i;
+	bool rich, rgb2rgb;
+	char *prefix;
+
+	get_values_from_reg(c->reg, LAYER_INFO, 1, &v[14]);
+	if (v[14] & 0x1) {
+		rich = true;
+		prefix = "LR_";
+	} else {
+		rich = false;
+		prefix = "LS_";
+	}
+
+	rgb2rgb = !!(v[14] & L_INFO_CM);
+
+	dump_block_header(sf, c->reg);
+
+	seq_printf(sf, "%sLAYER_INFO:\t\t0x%X\n", prefix, v[14]);
+
+	get_values_from_reg(c->reg, 0xD0, 1, v);
+	seq_printf(sf, "%sCONTROL:\t\t0x%X\n", prefix, v[0]);
+	if (rich) {
+		get_values_from_reg(c->reg, 0xD4, 1, v);
+		seq_printf(sf, "LR_RICH_CONTROL:\t0x%X\n", v[0]);
+	}
+	get_values_from_reg(c->reg, 0xD8, 4, v);
+	seq_printf(sf, "%sFORMAT:\t\t0x%X\n", prefix, v[0]);
+	seq_printf(sf, "%sIT_COEFFTAB:\t\t0x%X\n", prefix, v[1]);
+	seq_printf(sf, "%sIN_SIZE:\t\t0x%X\n", prefix, v[2]);
+	seq_printf(sf, "%sPALPHA:\t\t0x%X\n", prefix, v[3]);
+
+	get_values_from_reg(c->reg, 0x100, 3, v);
+	seq_printf(sf, "%sP0_PTR_LOW:\t\t0x%X\n", prefix, v[0]);
+	seq_printf(sf, "%sP0_PTR_HIGH:\t\t0x%X\n", prefix, v[1]);
+	seq_printf(sf, "%sP0_STRIDE:\t\t0x%X\n", prefix, v[2]);
+
+	get_values_from_reg(c->reg, 0x110, 2, v);
+	seq_printf(sf, "%sP1_PTR_LOW:\t\t0x%X\n", prefix, v[0]);
+	seq_printf(sf, "%sP1_PTR_HIGH:\t\t0x%X\n", prefix, v[1]);
+	if (rich) {
+		get_values_from_reg(c->reg, 0x118, 1, v);
+		seq_printf(sf, "LR_P1_STRIDE:\t\t0x%X\n", v[0]);
+
+		get_values_from_reg(c->reg, 0x120, 2, v);
+		seq_printf(sf, "LR_P2_PTR_LOW:\t\t0x%X\n", v[0]);
+		seq_printf(sf, "LR_P2_PTR_HIGH:\t\t0x%X\n", v[1]);
+
+		get_values_from_reg(c->reg, 0x130, 12, v);
+		for (i = 0; i < 12; i++)
+			seq_printf(sf, "LR_YUV_RGB_COEFF%u:\t0x%X\n", i, v[i]);
+	}
+
+	if (rgb2rgb) {
+		get_values_from_reg(c->reg, LAYER_RGB_RGB_COEFF0, 12, v);
+		for (i = 0; i < 12; i++)
+			seq_printf(sf, "LS_RGB_RGB_COEFF%u:\t0x%X\n", i, v[i]);
+	}
+
+	get_values_from_reg(c->reg, 0x160, 3, v);
+	seq_printf(sf, "%sAD_CONTROL:\t\t0x%X\n", prefix, v[0]);
+	seq_printf(sf, "%sAD_H_CROP:\t\t0x%X\n", prefix, v[1]);
+	seq_printf(sf, "%sAD_V_CROP:\t\t0x%X\n", prefix, v[2]);
+}
+
+static struct komeda_component_funcs d71_layer_funcs = {
+	.update		= d71_layer_update,
+	.disable	= d71_layer_disable,
+	.dump_register	= d71_layer_dump,
+};
+
+static int d71_layer_init(struct d71_dev *d71,
+			  struct block_header *blk, u32 __iomem *reg)
+{
+	struct komeda_component *c;
+	struct komeda_layer *layer;
+	u32 pipe_id, layer_id, layer_info;
+
+	get_resources_id(blk->block_info, &pipe_id, &layer_id);
+	c = komeda_component_add(&d71->pipes[pipe_id]->base, sizeof(*layer),
+				 layer_id,
+				 BLOCK_INFO_INPUT_ID(blk->block_info),
+				 &d71_layer_funcs, 0,
+				 get_valid_inputs(blk),
+				 1, reg, "LPU%d_LAYER%d", pipe_id, layer_id);
+	if (IS_ERR(c)) {
+		DRM_ERROR("Failed to add layer component\n");
+		return PTR_ERR(c);
+	}
+
+	layer = to_layer(c);
+	layer_info = malidp_read32(reg, LAYER_INFO);
+
+	if (layer_info & L_INFO_RF)
+		layer->layer_type = KOMEDA_FMT_RICH_LAYER;
+	else
+		layer->layer_type = KOMEDA_FMT_SIMPLE_LAYER;
+
+	set_range(&layer->hsize_in, 4, d71->max_line_size);
+	set_range(&layer->vsize_in, 4, d71->max_vsize);
+
+	malidp_write32(reg, LAYER_PALPHA, D71_PALPHA_DEF_MAP);
+
+	layer->supported_rots = DRM_MODE_ROTATE_MASK | DRM_MODE_REFLECT_MASK;
+
+	return 0;
+}
+
+static int d71_wb_layer_init(struct d71_dev *d71,
+			     struct block_header *blk, u32 __iomem *reg)
+{
+	DRM_DEBUG("Detect D71_Wb_Layer.\n");
+
+	return 0;
+}
+
+static void d71_component_disable(struct komeda_component *c)
+{
+	u32 __iomem *reg = c->reg;
+	u32 i;
+
+	malidp_write32(reg, BLK_CONTROL, 0);
+
+	for (i = 0; i < c->max_active_inputs; i++)
+		malidp_write32(reg, BLK_INPUT_ID0 + (i << 2), 0);
+}
+
+static void compiz_enable_input(u32 __iomem *id_reg,
+				u32 __iomem *cfg_reg,
+				u32 input_hw_id,
+				struct komeda_compiz_input_cfg *cin)
+{
+	u32 ctrl = CU_INPUT_CTRL_EN;
+	u8 blend = cin->pixel_blend_mode;
+
+	if (blend == DRM_MODE_BLEND_PIXEL_NONE)
+		ctrl |= CU_INPUT_CTRL_PAD;
+	else if (blend == DRM_MODE_BLEND_PREMULTI)
+		ctrl |= CU_INPUT_CTRL_PMUL;
+
+	ctrl |= CU_INPUT_CTRL_ALPHA(cin->layer_alpha);
+
+	malidp_write32(id_reg, BLK_INPUT_ID0, input_hw_id);
+
+	malidp_write32(cfg_reg, CU_INPUT0_SIZE,
+		       HV_SIZE(cin->hsize, cin->vsize));
+	malidp_write32(cfg_reg, CU_INPUT0_OFFSET,
+		       HV_OFFSET(cin->hoffset, cin->voffset));
+	malidp_write32(cfg_reg, CU_INPUT0_CONTROL, ctrl);
+}
+
+static void d71_compiz_update(struct komeda_component *c,
+			      struct komeda_component_state *state)
+{
+	struct komeda_compiz_state *st = to_compiz_st(state);
+	u32 __iomem *reg = c->reg;
+	u32 __iomem *id_reg, *cfg_reg;
+	u32 index, input_hw_id;
+
+	for_each_changed_input(state, index) {
+		id_reg = reg + index;
+		cfg_reg = reg + index * CU_PER_INPUT_REGS;
+		input_hw_id = to_d71_input_id(&state->inputs[index]);
+		if (state->active_inputs & BIT(index)) {
+			compiz_enable_input(id_reg, cfg_reg,
+					    input_hw_id, &st->cins[index]);
+		} else {
+			malidp_write32(id_reg, BLK_INPUT_ID0, 0);
+			malidp_write32(cfg_reg, CU_INPUT0_CONTROL, 0);
+		}
+	}
+
+	malidp_write32(reg, BLK_SIZE, HV_SIZE(st->hsize, st->vsize));
+}
+
+static void d71_compiz_dump(struct komeda_component *c, struct seq_file *sf)
+{
+	u32 v[8], i;
+
+	dump_block_header(sf, c->reg);
+
+	get_values_from_reg(c->reg, 0x80, 5, v);
+	for (i = 0; i < 5; i++)
+		seq_printf(sf, "CU_INPUT_ID%u:\t\t0x%X\n", i, v[i]);
+
+	get_values_from_reg(c->reg, 0xA0, 5, v);
+	seq_printf(sf, "CU_IRQ_RAW_STATUS:\t0x%X\n", v[0]);
+	seq_printf(sf, "CU_IRQ_CLEAR:\t\t0x%X\n", v[1]);
+	seq_printf(sf, "CU_IRQ_MASK:\t\t0x%X\n", v[2]);
+	seq_printf(sf, "CU_IRQ_STATUS:\t\t0x%X\n", v[3]);
+	seq_printf(sf, "CU_STATUS:\t\t0x%X\n", v[4]);
+
+	get_values_from_reg(c->reg, 0xD0, 2, v);
+	seq_printf(sf, "CU_CONTROL:\t\t0x%X\n", v[0]);
+	seq_printf(sf, "CU_SIZE:\t\t0x%X\n", v[1]);
+
+	get_values_from_reg(c->reg, 0xDC, 1, v);
+	seq_printf(sf, "CU_BG_COLOR:\t\t0x%X\n", v[0]);
+
+	for (i = 0, v[4] = 0xE0; i < 5; i++, v[4] += 0x10) {
+		get_values_from_reg(c->reg, v[4], 3, v);
+		seq_printf(sf, "CU_INPUT%u_SIZE:\t\t0x%X\n", i, v[0]);
+		seq_printf(sf, "CU_INPUT%u_OFFSET:\t0x%X\n", i, v[1]);
+		seq_printf(sf, "CU_INPUT%u_CONTROL:\t0x%X\n", i, v[2]);
+	}
+
+	get_values_from_reg(c->reg, 0x130, 2, v);
+	seq_printf(sf, "CU_USER_LOW:\t\t0x%X\n", v[0]);
+	seq_printf(sf, "CU_USER_HIGH:\t\t0x%X\n", v[1]);
+}
+
+struct komeda_component_funcs d71_compiz_funcs = {
+	.update		= d71_compiz_update,
+	.disable	= d71_component_disable,
+	.dump_register	= d71_compiz_dump,
+};
+
+static int d71_compiz_init(struct d71_dev *d71,
+			   struct block_header *blk, u32 __iomem *reg)
+{
+	struct komeda_component *c;
+	struct komeda_compiz *compiz;
+	u32 pipe_id, comp_id;
+
+	get_resources_id(blk->block_info, &pipe_id, &comp_id);
+
+	c = komeda_component_add(&d71->pipes[pipe_id]->base, sizeof(*compiz),
+				 comp_id,
+				 BLOCK_INFO_INPUT_ID(blk->block_info),
+				 &d71_compiz_funcs,
+				 CU_NUM_INPUT_IDS, get_valid_inputs(blk),
+				 CU_NUM_OUTPUT_IDS, reg,
+				 "CU%d", pipe_id);
+	if (IS_ERR(c))
+		return PTR_ERR(c);
+
+	compiz = to_compiz(c);
+
+	set_range(&compiz->hsize, D71_MIN_LINE_SIZE, d71->max_line_size);
+	set_range(&compiz->vsize, D71_MIN_VERTICAL_SIZE, d71->max_vsize);
+
+	return 0;
+}
+
+static void d71_improc_update(struct komeda_component *c,
+			      struct komeda_component_state *state)
+{
+	struct komeda_improc_state *st = to_improc_st(state);
+	u32 __iomem *reg = c->reg;
+	u32 index, input_hw_id;
+
+	for_each_changed_input(state, index) {
+		input_hw_id = state->active_inputs & BIT(index) ?
+			      to_d71_input_id(&state->inputs[index]) : 0;
+		malidp_write32(reg, BLK_INPUT_ID0 + index * 4, input_hw_id);
+	}
+
+	malidp_write32(reg, BLK_SIZE, HV_SIZE(st->hsize, st->vsize));
+}
+
+static void d71_improc_dump(struct komeda_component *c, struct seq_file *sf)
+{
+	u32 v[12], i;
+
+	dump_block_header(sf, c->reg);
+
+	get_values_from_reg(c->reg, 0x80, 2, v);
+	seq_printf(sf, "IPS_INPUT_ID0:\t\t0x%X\n", v[0]);
+	seq_printf(sf, "IPS_INPUT_ID1:\t\t0x%X\n", v[1]);
+
+	get_values_from_reg(c->reg, 0xC0, 1, v);
+	seq_printf(sf, "IPS_INFO:\t\t0x%X\n", v[0]);
+
+	get_values_from_reg(c->reg, 0xD0, 3, v);
+	seq_printf(sf, "IPS_CONTROL:\t\t0x%X\n", v[0]);
+	seq_printf(sf, "IPS_SIZE:\t\t0x%X\n", v[1]);
+	seq_printf(sf, "IPS_DEPTH:\t\t0x%X\n", v[2]);
+
+	get_values_from_reg(c->reg, 0x130, 12, v);
+	for (i = 0; i < 12; i++)
+		seq_printf(sf, "IPS_RGB_RGB_COEFF%u:\t0x%X\n", i, v[i]);
+
+	get_values_from_reg(c->reg, 0x170, 12, v);
+	for (i = 0; i < 12; i++)
+		seq_printf(sf, "IPS_RGB_YUV_COEFF%u:\t0x%X\n", i, v[i]);
+}
+
+struct komeda_component_funcs d71_improc_funcs = {
+	.update		= d71_improc_update,
+	.disable	= d71_component_disable,
+	.dump_register	= d71_improc_dump,
+};
+
+static int d71_improc_init(struct d71_dev *d71,
+			   struct block_header *blk, u32 __iomem *reg)
+{
+	struct komeda_component *c;
+	struct komeda_improc *improc;
+	u32 pipe_id, comp_id, value;
+
+	get_resources_id(blk->block_info, &pipe_id, &comp_id);
+
+	c = komeda_component_add(&d71->pipes[pipe_id]->base, sizeof(*improc),
+				 comp_id,
+				 BLOCK_INFO_INPUT_ID(blk->block_info),
+				 &d71_improc_funcs, IPS_NUM_INPUT_IDS,
+				 get_valid_inputs(blk),
+				 IPS_NUM_OUTPUT_IDS, reg, "DOU%d_IPS", pipe_id);
+	if (IS_ERR(c)) {
+		DRM_ERROR("Failed to add improc component\n");
+		return PTR_ERR(c);
+	}
+
+	improc = to_improc(c);
+	improc->supported_color_depths = BIT(8) | BIT(10);
+	improc->supported_color_formats = DRM_COLOR_FORMAT_RGB444 |
+					  DRM_COLOR_FORMAT_YCRCB444 |
+					  DRM_COLOR_FORMAT_YCRCB422;
+	value = malidp_read32(reg, BLK_INFO);
+	if (value & IPS_INFO_CHD420)
+		improc->supported_color_formats |= DRM_COLOR_FORMAT_YCRCB420;
+
+	improc->supports_csc = true;
+	improc->supports_gamma = true;
+
+	return 0;
+}
+
+static void d71_timing_ctrlr_disable(struct komeda_component *c)
+{
+	malidp_write32_mask(c->reg, BLK_CONTROL, BS_CTRL_EN, 0);
+}
+
+static void d71_timing_ctrlr_update(struct komeda_component *c,
+				    struct komeda_component_state *state)
+{
+	struct drm_crtc_state *crtc_st = state->crtc->state;
+	u32 __iomem *reg = c->reg;
+	struct videomode vm;
+	u32 value;
+
+	drm_display_mode_to_videomode(&crtc_st->adjusted_mode, &vm);
+
+	malidp_write32(reg, BS_ACTIVESIZE, HV_SIZE(vm.hactive, vm.vactive));
+	malidp_write32(reg, BS_HINTERVALS, BS_H_INTVALS(vm.hfront_porch,
+							vm.hback_porch));
+	malidp_write32(reg, BS_VINTERVALS, BS_V_INTVALS(vm.vfront_porch,
+							vm.vback_porch));
+
+	value = BS_SYNC_VSW(vm.vsync_len) | BS_SYNC_HSW(vm.hsync_len);
+	value |= vm.flags & DISPLAY_FLAGS_VSYNC_HIGH ? BS_SYNC_VSP : 0;
+	value |= vm.flags & DISPLAY_FLAGS_HSYNC_HIGH ? BS_SYNC_HSP : 0;
+	malidp_write32(reg, BS_SYNC, value);
+
+	malidp_write32(reg, BS_PROG_LINE, D71_DEFAULT_PREPRETCH_LINE - 1);
+	malidp_write32(reg, BS_PREFETCH_LINE, D71_DEFAULT_PREPRETCH_LINE);
+
+	/* configure bs control register */
+	value = BS_CTRL_EN | BS_CTRL_VM;
+
+	malidp_write32(reg, BLK_CONTROL, value);
+}
+
+void d71_timing_ctrlr_dump(struct komeda_component *c, struct seq_file *sf)
+{
+	u32 v[8], i;
+
+	dump_block_header(sf, c->reg);
+
+	get_values_from_reg(c->reg, 0xC0, 1, v);
+	seq_printf(sf, "BS_INFO:\t\t0x%X\n", v[0]);
+
+	get_values_from_reg(c->reg, 0xD0, 8, v);
+	seq_printf(sf, "BS_CONTROL:\t\t0x%X\n", v[0]);
+	seq_printf(sf, "BS_PROG_LINE:\t\t0x%X\n", v[1]);
+	seq_printf(sf, "BS_PREFETCH_LINE:\t0x%X\n", v[2]);
+	seq_printf(sf, "BS_BG_COLOR:\t\t0x%X\n", v[3]);
+	seq_printf(sf, "BS_ACTIVESIZE:\t\t0x%X\n", v[4]);
+	seq_printf(sf, "BS_HINTERVALS:\t\t0x%X\n", v[5]);
+	seq_printf(sf, "BS_VINTERVALS:\t\t0x%X\n", v[6]);
+	seq_printf(sf, "BS_SYNC:\t\t0x%X\n", v[7]);
+
+	get_values_from_reg(c->reg, 0x100, 3, v);
+	seq_printf(sf, "BS_DRIFT_TO:\t\t0x%X\n", v[0]);
+	seq_printf(sf, "BS_FRAME_TO:\t\t0x%X\n", v[1]);
+	seq_printf(sf, "BS_TE_TO:\t\t0x%X\n", v[2]);
+
+	get_values_from_reg(c->reg, 0x110, 3, v);
+	for (i = 0; i < 3; i++)
+		seq_printf(sf, "BS_T%u_INTERVAL:\t\t0x%X\n", i, v[i]);
+
+	get_values_from_reg(c->reg, 0x120, 5, v);
+	for (i = 0; i < 2; i++) {
+		seq_printf(sf, "BS_CRC%u_LOW:\t\t0x%X\n", i, v[i << 1]);
+		seq_printf(sf, "BS_CRC%u_HIGH:\t\t0x%X\n", i, v[(i << 1) + 1]);
+	}
+	seq_printf(sf, "BS_USER:\t\t0x%X\n", v[4]);
+}
+
+struct komeda_component_funcs d71_timing_ctrlr_funcs = {
+	.update		= d71_timing_ctrlr_update,
+	.disable	= d71_timing_ctrlr_disable,
+	.dump_register	= d71_timing_ctrlr_dump,
+};
+
+static int d71_timing_ctrlr_init(struct d71_dev *d71,
+				 struct block_header *blk, u32 __iomem *reg)
+{
+	struct komeda_component *c;
+	struct komeda_timing_ctrlr *ctrlr;
+	u32 pipe_id, comp_id;
+
+	get_resources_id(blk->block_info, &pipe_id, &comp_id);
+
+	c = komeda_component_add(&d71->pipes[pipe_id]->base, sizeof(*ctrlr),
+				 KOMEDA_COMPONENT_TIMING_CTRLR,
+				 BLOCK_INFO_INPUT_ID(blk->block_info),
+				 &d71_timing_ctrlr_funcs,
+				 1, BIT(KOMEDA_COMPONENT_IPS0 + pipe_id),
+				 BS_NUM_OUTPUT_IDS, reg, "DOU%d_BS", pipe_id);
+	if (IS_ERR(c)) {
+		DRM_ERROR("Failed to add display_ctrl component\n");
+		return PTR_ERR(c);
+	}
+
+	ctrlr = to_ctrlr(c);
+
+	ctrlr->supports_dual_link = true;
+
+	return 0;
+}
+
+int d71_probe_block(struct d71_dev *d71,
+		    struct block_header *blk, u32 __iomem *reg)
+{
+	struct d71_pipeline *pipe;
+	int blk_id = BLOCK_INFO_BLK_ID(blk->block_info);
+
+	int err = 0;
+
+	switch (BLOCK_INFO_BLK_TYPE(blk->block_info)) {
+	case D71_BLK_TYPE_GCU:
+		break;
+
+	case D71_BLK_TYPE_LPU:
+		pipe = d71->pipes[blk_id];
+		pipe->lpu_addr = reg;
+		break;
+
+	case D71_BLK_TYPE_LPU_LAYER:
+		err = d71_layer_init(d71, blk, reg);
+		break;
+
+	case D71_BLK_TYPE_LPU_WB_LAYER:
+		err = d71_wb_layer_init(d71, blk, reg);
+		break;
+
+	case D71_BLK_TYPE_CU:
+		pipe = d71->pipes[blk_id];
+		pipe->cu_addr = reg;
+		err = d71_compiz_init(d71, blk, reg);
+		break;
+
+	case D71_BLK_TYPE_CU_SPLITTER:
+	case D71_BLK_TYPE_CU_SCALER:
+	case D71_BLK_TYPE_CU_MERGER:
+		break;
+
+	case D71_BLK_TYPE_DOU:
+		pipe = d71->pipes[blk_id];
+		pipe->dou_addr = reg;
+		break;
+
+	case D71_BLK_TYPE_DOU_IPS:
+		err = d71_improc_init(d71, blk, reg);
+		break;
+
+	case D71_BLK_TYPE_DOU_FT_COEFF:
+		pipe = d71->pipes[blk_id];
+		pipe->dou_ft_coeff_addr = reg;
+		break;
+
+	case D71_BLK_TYPE_DOU_BS:
+		err = d71_timing_ctrlr_init(d71, blk, reg);
+		break;
+
+	case D71_BLK_TYPE_GLB_LT_COEFF:
+		break;
+
+	case D71_BLK_TYPE_GLB_SCL_COEFF:
+		d71->glb_scl_coeff_addr[blk_id] = reg;
+		break;
+
+	default:
+		DRM_ERROR("Unknown block (block_info: 0x%x) is found\n",
+			  blk->block_info);
+		err = -EINVAL;
+		break;
+	}
+
+	return err;
+}
diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
index edbf9daa1545..72631d673f85 100644
--- a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
@@ -4,13 +4,375 @@
  * Author: James.Qian.Wang <james.qian.wang@arm.com>
  *
  */
+
+#include <drm/drm_print.h>
+#include "d71_dev.h"
 #include "malidp_io.h"
-#include "komeda_dev.h"
+
+static u64 get_lpu_event(struct d71_pipeline *d71_pipeline)
+{
+	u32 __iomem *reg = d71_pipeline->lpu_addr;
+	u32 status, raw_status;
+	u64 evts = 0ULL;
+
+	raw_status = malidp_read32(reg, BLK_IRQ_RAW_STATUS);
+	if (raw_status & LPU_IRQ_IBSY)
+		evts |= KOMEDA_EVENT_IBSY;
+	if (raw_status & LPU_IRQ_EOW)
+		evts |= KOMEDA_EVENT_EOW;
+
+	if (raw_status & (LPU_IRQ_ERR | LPU_IRQ_IBSY)) {
+		u32 restore = 0, tbu_status;
+		/* Check error of LPU status */
+		status = malidp_read32(reg, BLK_STATUS);
+		if (status & LPU_STATUS_AXIE) {
+			restore |= LPU_STATUS_AXIE;
+			evts |= KOMEDA_ERR_AXIE;
+		}
+		if (status & LPU_STATUS_ACE0) {
+			restore |= LPU_STATUS_ACE0;
+			evts |= KOMEDA_ERR_ACE0;
+		}
+		if (status & LPU_STATUS_ACE1) {
+			restore |= LPU_STATUS_ACE1;
+			evts |= KOMEDA_ERR_ACE1;
+		}
+		if (status & LPU_STATUS_ACE2) {
+			restore |= LPU_STATUS_ACE2;
+			evts |= KOMEDA_ERR_ACE2;
+		}
+		if (status & LPU_STATUS_ACE3) {
+			restore |= LPU_STATUS_ACE3;
+			evts |= KOMEDA_ERR_ACE3;
+		}
+		if (restore != 0)
+			malidp_write32_mask(reg, BLK_STATUS, restore, 0);
+
+		restore = 0;
+		/* Check errors of TBU status */
+		tbu_status = malidp_read32(reg, LPU_TBU_STATUS);
+		if (tbu_status & LPU_TBU_STATUS_TCF) {
+			restore |= LPU_TBU_STATUS_TCF;
+			evts |= KOMEDA_ERR_TCF;
+		}
+		if (tbu_status & LPU_TBU_STATUS_TTNG) {
+			restore |= LPU_TBU_STATUS_TTNG;
+			evts |= KOMEDA_ERR_TTNG;
+		}
+		if (tbu_status & LPU_TBU_STATUS_TITR) {
+			restore |= LPU_TBU_STATUS_TITR;
+			evts |= KOMEDA_ERR_TITR;
+		}
+		if (tbu_status & LPU_TBU_STATUS_TEMR) {
+			restore |= LPU_TBU_STATUS_TEMR;
+			evts |= KOMEDA_ERR_TEMR;
+		}
+		if (tbu_status & LPU_TBU_STATUS_TTF) {
+			restore |= LPU_TBU_STATUS_TTF;
+			evts |= KOMEDA_ERR_TTF;
+		}
+		if (restore != 0)
+			malidp_write32_mask(reg, LPU_TBU_STATUS, restore, 0);
+	}
+
+	malidp_write32(reg, BLK_IRQ_CLEAR, raw_status);
+	return evts;
+}
+
+static u64 get_cu_event(struct d71_pipeline *d71_pipeline)
+{
+	u32 __iomem *reg = d71_pipeline->cu_addr;
+	u32 status, raw_status;
+	u64 evts = 0ULL;
+
+	raw_status = malidp_read32(reg, BLK_IRQ_RAW_STATUS);
+	if (raw_status & CU_IRQ_OVR)
+		evts |= KOMEDA_EVENT_OVR;
+
+	if (raw_status & (CU_IRQ_ERR | CU_IRQ_OVR)) {
+		status = malidp_read32(reg, BLK_STATUS) & 0x7FFFFFFF;
+		if (status & CU_STATUS_CPE)
+			evts |= KOMEDA_ERR_CPE;
+		if (status & CU_STATUS_ZME)
+			evts |= KOMEDA_ERR_ZME;
+		if (status & CU_STATUS_CFGE)
+			evts |= KOMEDA_ERR_CFGE;
+		if (status)
+			malidp_write32_mask(reg, BLK_STATUS, status, 0);
+	}
+
+	malidp_write32(reg, BLK_IRQ_CLEAR, raw_status);
+
+	return evts;
+}
+
+static u64 get_dou_event(struct d71_pipeline *d71_pipeline)
+{
+	u32 __iomem *reg = d71_pipeline->dou_addr;
+	u32 status, raw_status;
+	u64 evts = 0ULL;
+
+	raw_status = malidp_read32(reg, BLK_IRQ_RAW_STATUS);
+	if (raw_status & DOU_IRQ_PL0)
+		evts |= KOMEDA_EVENT_VSYNC;
+	if (raw_status & DOU_IRQ_UND)
+		evts |= KOMEDA_EVENT_URUN;
+
+	if (raw_status & (DOU_IRQ_ERR | DOU_IRQ_UND)) {
+		u32 restore  = 0;
+
+		status = malidp_read32(reg, BLK_STATUS);
+		if (status & DOU_STATUS_DRIFTTO) {
+			restore |= DOU_STATUS_DRIFTTO;
+			evts |= KOMEDA_ERR_DRIFTTO;
+		}
+		if (status & DOU_STATUS_FRAMETO) {
+			restore |= DOU_STATUS_FRAMETO;
+			evts |= KOMEDA_ERR_FRAMETO;
+		}
+		if (status & DOU_STATUS_TETO) {
+			restore |= DOU_STATUS_TETO;
+			evts |= KOMEDA_ERR_TETO;
+		}
+		if (status & DOU_STATUS_CSCE) {
+			restore |= DOU_STATUS_CSCE;
+			evts |= KOMEDA_ERR_CSCE;
+		}
+
+		if (restore != 0)
+			malidp_write32_mask(reg, BLK_STATUS, restore, 0);
+	}
+
+	malidp_write32(reg, BLK_IRQ_CLEAR, raw_status);
+	return evts;
+}
+
+static u64 get_pipeline_event(struct d71_pipeline *d71_pipeline, u32 gcu_status)
+{
+	u32 evts = 0ULL;
+
+	if (gcu_status & (GLB_IRQ_STATUS_LPU0 | GLB_IRQ_STATUS_LPU1))
+		evts |= get_lpu_event(d71_pipeline);
+
+	if (gcu_status & (GLB_IRQ_STATUS_CU0 | GLB_IRQ_STATUS_CU1))
+		evts |= get_cu_event(d71_pipeline);
+
+	if (gcu_status & (GLB_IRQ_STATUS_DOU0 | GLB_IRQ_STATUS_DOU1))
+		evts |= get_dou_event(d71_pipeline);
+
+	return evts;
+}
+
+static irqreturn_t
+d71_irq_handler(struct komeda_dev *mdev, struct komeda_events *evts)
+{
+	struct d71_dev *d71 = mdev->chip_data;
+	u32 status, gcu_status, raw_status;
+
+	gcu_status = malidp_read32(d71->gcu_addr, GLB_IRQ_STATUS);
+
+	if (gcu_status & GLB_IRQ_STATUS_GCU) {
+		raw_status = malidp_read32(d71->gcu_addr, BLK_IRQ_RAW_STATUS);
+		if (raw_status & GCU_IRQ_CVAL0)
+			evts->pipes[0] |= KOMEDA_EVENT_FLIP;
+		if (raw_status & GCU_IRQ_CVAL1)
+			evts->pipes[1] |= KOMEDA_EVENT_FLIP;
+		if (raw_status & GCU_IRQ_ERR) {
+			status = malidp_read32(d71->gcu_addr, BLK_STATUS);
+			if (status & GCU_STATUS_MERR) {
+				evts->global |= KOMEDA_ERR_MERR;
+				malidp_write32_mask(d71->gcu_addr, BLK_STATUS,
+						    GCU_STATUS_MERR, 0);
+			}
+		}
+
+		malidp_write32(d71->gcu_addr, BLK_IRQ_CLEAR, raw_status);
+	}
+
+	if (gcu_status & GLB_IRQ_STATUS_PIPE0)
+		evts->pipes[0] |= get_pipeline_event(d71->pipes[0], gcu_status);
+
+	if (gcu_status & GLB_IRQ_STATUS_PIPE1)
+		evts->pipes[1] |= get_pipeline_event(d71->pipes[1], gcu_status);
+
+	return gcu_status ? IRQ_HANDLED : IRQ_NONE;
+}
+
+#define ENABLED_GCU_IRQS	(GCU_IRQ_CVAL0 | GCU_IRQ_CVAL1 | \
+				 GCU_IRQ_MODE | GCU_IRQ_ERR)
+#define ENABLED_LPU_IRQS	(LPU_IRQ_IBSY | LPU_IRQ_ERR | LPU_IRQ_EOW)
+#define ENABLED_CU_IRQS		(CU_IRQ_OVR | CU_IRQ_ERR)
+#define ENABLED_DOU_IRQS	(DOU_IRQ_UND | DOU_IRQ_ERR)
+
+static int d71_enable_irq(struct komeda_dev *mdev)
+{
+	struct d71_dev *d71 = mdev->chip_data;
+	struct d71_pipeline *pipe;
+	u32 i;
+
+	malidp_write32_mask(d71->gcu_addr, BLK_IRQ_MASK,
+			    ENABLED_GCU_IRQS, ENABLED_GCU_IRQS);
+	for (i = 0; i < d71->num_pipelines; i++) {
+		pipe = d71->pipes[i];
+		malidp_write32_mask(pipe->cu_addr,  BLK_IRQ_MASK,
+				    ENABLED_CU_IRQS, ENABLED_CU_IRQS);
+		malidp_write32_mask(pipe->lpu_addr, BLK_IRQ_MASK,
+				    ENABLED_LPU_IRQS, ENABLED_LPU_IRQS);
+		malidp_write32_mask(pipe->dou_addr, BLK_IRQ_MASK,
+				    ENABLED_DOU_IRQS, ENABLED_DOU_IRQS);
+	}
+	return 0;
+}
+
+static int d71_disable_irq(struct komeda_dev *mdev)
+{
+	struct d71_dev *d71 = mdev->chip_data;
+	struct d71_pipeline *pipe;
+	u32 i;
+
+	malidp_write32_mask(d71->gcu_addr, BLK_IRQ_MASK, ENABLED_GCU_IRQS, 0);
+	for (i = 0; i < d71->num_pipelines; i++) {
+		pipe = d71->pipes[i];
+		malidp_write32_mask(pipe->cu_addr,  BLK_IRQ_MASK,
+				    ENABLED_CU_IRQS, 0);
+		malidp_write32_mask(pipe->lpu_addr, BLK_IRQ_MASK,
+				    ENABLED_LPU_IRQS, 0);
+		malidp_write32_mask(pipe->dou_addr, BLK_IRQ_MASK,
+				    ENABLED_DOU_IRQS, 0);
+	}
+	return 0;
+}
+
+static int d71_reset(struct d71_dev *d71)
+{
+	u32 __iomem *gcu = d71->gcu_addr;
+	int ret;
+
+	malidp_write32_mask(gcu, BLK_CONTROL,
+			    GCU_CONTROL_SRST, GCU_CONTROL_SRST);
+
+	ret = dp_wait_cond(!(malidp_read32(gcu, BLK_CONTROL) & GCU_CONTROL_SRST),
+			   100, 1000, 10000);
+
+	return ret > 0 ? 0 : -ETIMEDOUT;
+}
+
+void d71_read_block_header(u32 __iomem *reg, struct block_header *blk)
+{
+	int i;
+
+	blk->block_info = malidp_read32(reg, BLK_BLOCK_INFO);
+	if (BLOCK_INFO_BLK_TYPE(blk->block_info) == D71_BLK_TYPE_RESERVED)
+		return;
+
+	blk->pipeline_info = malidp_read32(reg, BLK_PIPELINE_INFO);
+
+	/* get valid input and output ids */
+	for (i = 0; i < PIPELINE_INFO_N_VALID_INPUTS(blk->pipeline_info); i++)
+		blk->input_ids[i] = malidp_read32(reg + i, BLK_VALID_INPUT_ID0);
+	for (i = 0; i < PIPELINE_INFO_N_OUTPUTS(blk->pipeline_info); i++)
+		blk->output_ids[i] = malidp_read32(reg + i, BLK_OUTPUT_ID0);
+}
+
+static void d71_cleanup(struct komeda_dev *mdev)
+{
+	struct d71_dev *d71 = mdev->chip_data;
+
+	if (!d71)
+		return;
+
+	devm_kfree(mdev->dev, d71);
+	mdev->chip_data = NULL;
+}
 
 static int d71_enum_resources(struct komeda_dev *mdev)
 {
-	/* TODO add enum resources */
-	return -1;
+	struct d71_dev *d71;
+	struct komeda_pipeline *pipe;
+	struct block_header blk;
+	u32 __iomem *blk_base;
+	u32 i, value, offset;
+	int err;
+
+	d71 = devm_kzalloc(mdev->dev, sizeof(*d71), GFP_KERNEL);
+	if (!d71)
+		return -ENOMEM;
+
+	mdev->chip_data = d71;
+	d71->mdev = mdev;
+	d71->gcu_addr = mdev->reg_base;
+	d71->periph_addr = mdev->reg_base + (D71_BLOCK_OFFSET_PERIPH >> 2);
+
+	err = d71_reset(d71);
+	if (err) {
+		DRM_ERROR("Fail to reset d71 device.\n");
+		goto err_cleanup;
+	}
+
+	/* probe GCU */
+	value = malidp_read32(d71->gcu_addr, GLB_CORE_INFO);
+	d71->num_blocks = value & 0xFF;
+	d71->num_pipelines = (value >> 8) & 0x7;
+
+	if (d71->num_pipelines > D71_MAX_PIPELINE) {
+		DRM_ERROR("d71 supports %d pipelines, but got: %d.\n",
+			  D71_MAX_PIPELINE, d71->num_pipelines);
+		err = -EINVAL;
+		goto err_cleanup;
+	}
+
+	/* probe PERIPH */
+	value = malidp_read32(d71->periph_addr, BLK_BLOCK_INFO);
+	if (BLOCK_INFO_BLK_TYPE(value) != D71_BLK_TYPE_PERIPH) {
+		DRM_ERROR("access blk periph but got blk: %d.\n",
+			  BLOCK_INFO_BLK_TYPE(value));
+		err = -EINVAL;
+		goto err_cleanup;
+	}
+
+	value = malidp_read32(d71->periph_addr, PERIPH_CONFIGURATION_ID);
+
+	d71->max_line_size	= value & PERIPH_MAX_LINE_SIZE ? 4096 : 2048;
+	d71->max_vsize		= 4096;
+	d71->num_rich_layers	= value & PERIPH_NUM_RICH_LAYERS ? 2 : 1;
+	d71->supports_dual_link	= value & PERIPH_SPLIT_EN ? true : false;
+	d71->integrates_tbu	= value & PERIPH_TBU_EN ? true : false;
+
+	for (i = 0; i < d71->num_pipelines; i++) {
+		pipe = komeda_pipeline_add(mdev, sizeof(struct d71_pipeline),
+					   NULL);
+		if (IS_ERR(pipe)) {
+			err = PTR_ERR(pipe);
+			goto err_cleanup;
+		}
+		d71->pipes[i] = to_d71_pipeline(pipe);
+	}
+
+	/* loop the register blks and probe */
+	i = 2; /* exclude GCU and PERIPH */
+	offset = D71_BLOCK_SIZE; /* skip GCU */
+	while (i < d71->num_blocks) {
+		blk_base = mdev->reg_base + (offset >> 2);
+
+		d71_read_block_header(blk_base, &blk);
+		if (BLOCK_INFO_BLK_TYPE(blk.block_info) != D71_BLK_TYPE_RESERVED) {
+			err = d71_probe_block(d71, &blk, blk_base);
+			if (err)
+				goto err_cleanup;
+			i++;
+		}
+
+		offset += D71_BLOCK_SIZE;
+	}
+
+	DRM_DEBUG("total %d (out of %d) blocks are found.\n",
+		  i, d71->num_blocks);
+
+	return 0;
+
+err_cleanup:
+	d71_cleanup(mdev);
+	return err;
 }
 
 #define __HW_ID(__group, __format) \
@@ -93,13 +455,12 @@ static void d71_init_fmt_tbl(struct komeda_dev *mdev)
 static struct komeda_dev_funcs d71_chip_funcs = {
 	.init_format_table = d71_init_fmt_tbl,
 	.enum_resources	= d71_enum_resources,
-	.cleanup	= NULL,
+	.cleanup	= d71_cleanup,
+	.irq_handler	= d71_irq_handler,
+	.enable_irq	= d71_enable_irq,
+	.disable_irq	= d71_disable_irq,
 };
 
-#define GLB_ARCH_ID		0x000
-#define GLB_CORE_ID		0x004
-#define GLB_CORE_INFO		0x008
-
 struct komeda_dev_funcs *
 d71_identify(u32 __iomem *reg_base, struct komeda_chip_info *chip)
 {
diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.h b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.h
new file mode 100644
index 000000000000..7465c57d9774
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#ifndef _D71_DEV_H_
+#define _D71_DEV_H_
+
+#include "komeda_dev.h"
+#include "komeda_pipeline.h"
+#include "d71_regs.h"
+
+struct d71_pipeline {
+	struct komeda_pipeline base;
+
+	/* d71 private pipeline blocks */
+	u32 __iomem	*lpu_addr;
+	u32 __iomem	*cu_addr;
+	u32 __iomem	*dou_addr;
+	u32 __iomem	*dou_ft_coeff_addr; /* forward transform coeffs table */
+};
+
+struct d71_dev {
+	struct komeda_dev *mdev;
+
+	int	num_blocks;
+	int	num_pipelines;
+	int	num_rich_layers;
+	u32	max_line_size;
+	u32	max_vsize;
+	u32	supports_dual_link : 1;
+	u32	integrates_tbu : 1;
+
+	/* global register blocks */
+	u32 __iomem	*gcu_addr;
+	/* scaling coeffs table */
+	u32 __iomem	*glb_scl_coeff_addr[D71_MAX_GLB_SCL_COEFF];
+	u32 __iomem	*periph_addr;
+
+	struct d71_pipeline *pipes[D71_MAX_PIPELINE];
+};
+
+#define to_d71_pipeline(x)	container_of(x, struct d71_pipeline, base)
+
+int d71_probe_block(struct d71_dev *d71,
+		    struct block_header *blk, u32 __iomem *reg);
+void d71_read_block_header(u32 __iomem *reg, struct block_header *blk);
+
+#endif /* !_D71_DEV_H_ */
diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_regs.h b/drivers/gpu/drm/arm/display/komeda/d71/d71_regs.h
new file mode 100644
index 000000000000..2d5e6d00b42c
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_regs.h
@@ -0,0 +1,530 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#ifndef _D71_REG_H_
+#define _D71_REG_H_
+
+/* Common block registers offset */
+#define BLK_BLOCK_INFO		0x000
+#define BLK_PIPELINE_INFO	0x004
+#define BLK_VALID_INPUT_ID0	0x020
+#define BLK_OUTPUT_ID0		0x060
+#define BLK_INPUT_ID0		0x080
+#define BLK_IRQ_RAW_STATUS	0x0A0
+#define BLK_IRQ_CLEAR		0x0A4
+#define BLK_IRQ_MASK		0x0A8
+#define BLK_IRQ_STATUS		0x0AC
+#define BLK_STATUS		0x0B0
+#define BLK_INFO		0x0C0
+#define BLK_CONTROL		0x0D0
+#define BLK_SIZE		0x0D4
+#define BLK_IN_SIZE		0x0E0
+
+#define BLK_P0_PTR_LOW		0x100
+#define BLK_P0_PTR_HIGH		0x104
+#define BLK_P0_STRIDE		0x108
+#define BLK_P1_PTR_LOW		0x110
+#define BLK_P1_PTR_HIGH		0x114
+#define BLK_P1_STRIDE		0x118
+#define BLK_P2_PTR_LOW		0x120
+#define BLK_P2_PTR_HIGH		0x124
+
+#define BLOCK_INFO_N_SUBBLKS(x)	((x) & 0x000F)
+#define BLOCK_INFO_BLK_ID(x)	(((x) & 0x00F0) >> 4)
+#define BLOCK_INFO_BLK_TYPE(x)	(((x) & 0xFF00) >> 8)
+#define BLOCK_INFO_INPUT_ID(x)	((x) & 0xFFF0)
+#define BLOCK_INFO_TYPE_ID(x)	(((x) & 0x0FF0) >> 4)
+
+#define PIPELINE_INFO_N_OUTPUTS(x)	((x) & 0x000F)
+#define PIPELINE_INFO_N_VALID_INPUTS(x)	(((x) & 0x0F00) >> 8)
+
+/* Common block control register bits */
+#define BLK_CTRL_EN		BIT(0)
+/* Common size macro */
+#define HV_SIZE(h, v)		(((h) & 0x1FFF) + (((v) & 0x1FFF) << 16))
+#define HV_OFFSET(h, v)		(((h) & 0xFFF) + (((v) & 0xFFF) << 16))
+#define HV_CROP(h, v)		(((h) & 0xFFF) + (((v) & 0xFFF) << 16))
+
+/* AD_CONTROL register */
+#define AD_CONTROL		0x160
+
+/* AD_CONTROL register bits */
+#define AD_AEN			BIT(0)
+#define AD_YT			BIT(1)
+#define AD_BS			BIT(2)
+#define AD_WB			BIT(3)
+#define AD_TH			BIT(4)
+
+/* Global Control Unit */
+#define GLB_ARCH_ID		0x000
+#define GLB_CORE_ID		0x004
+#define GLB_CORE_INFO		0x008
+#define GLB_IRQ_STATUS		0x010
+
+#define GCU_CONFIG_VALID0	0x0D4
+#define GCU_CONFIG_VALID1	0x0D8
+
+/* GCU_CONTROL_BITS */
+#define GCU_CONTROL_MODE(x)	((x) & 0x7)
+#define GCU_CONTROL_SRST	BIT(16)
+
+/* GCU opmode */
+#define INACTIVE_MODE		0
+#define TBU_CONNECT_MODE	1
+#define TBU_DISCONNECT_MODE	2
+#define DO0_ACTIVE_MODE		3
+#define DO1_ACTIVE_MODE		4
+#define DO01_ACTIVE_MODE	5
+
+/* GLB_IRQ_STATUS bits */
+#define GLB_IRQ_STATUS_GCU	BIT(0)
+#define GLB_IRQ_STATUS_LPU0	BIT(8)
+#define GLB_IRQ_STATUS_LPU1	BIT(9)
+#define GLB_IRQ_STATUS_ATU0	BIT(10)
+#define GLB_IRQ_STATUS_ATU1	BIT(11)
+#define GLB_IRQ_STATUS_ATU2	BIT(12)
+#define GLB_IRQ_STATUS_ATU3	BIT(13)
+#define GLB_IRQ_STATUS_CU0	BIT(16)
+#define GLB_IRQ_STATUS_CU1	BIT(17)
+#define GLB_IRQ_STATUS_DOU0	BIT(24)
+#define GLB_IRQ_STATUS_DOU1	BIT(25)
+
+#define GLB_IRQ_STATUS_PIPE0	(GLB_IRQ_STATUS_LPU0 |\
+				 GLB_IRQ_STATUS_ATU0 |\
+				 GLB_IRQ_STATUS_ATU1 |\
+				 GLB_IRQ_STATUS_CU0 |\
+				 GLB_IRQ_STATUS_DOU0)
+
+#define GLB_IRQ_STATUS_PIPE1	(GLB_IRQ_STATUS_LPU1 |\
+				 GLB_IRQ_STATUS_ATU2 |\
+				 GLB_IRQ_STATUS_ATU3 |\
+				 GLB_IRQ_STATUS_CU1 |\
+				 GLB_IRQ_STATUS_DOU1)
+
+#define GLB_IRQ_STATUS_ATU	(GLB_IRQ_STATUS_ATU0 |\
+				 GLB_IRQ_STATUS_ATU1 |\
+				 GLB_IRQ_STATUS_ATU2 |\
+				 GLB_IRQ_STATUS_ATU3)
+
+/* GCU_IRQ_BITS */
+#define GCU_IRQ_CVAL0		BIT(0)
+#define GCU_IRQ_CVAL1		BIT(1)
+#define GCU_IRQ_MODE		BIT(4)
+#define GCU_IRQ_ERR		BIT(11)
+
+/* GCU_STATUS_BITS */
+#define GCU_STATUS_MODE(x)	((x) & 0x7)
+#define GCU_STATUS_MERR		BIT(4)
+#define GCU_STATUS_TCS0		BIT(8)
+#define GCU_STATUS_TCS1		BIT(9)
+#define GCU_STATUS_ACTIVE	BIT(31)
+
+/* GCU_CONFIG_VALIDx BITS */
+#define GCU_CONFIG_CVAL		BIT(0)
+
+/* PERIPHERAL registers */
+#define PERIPH_MAX_LINE_SIZE	BIT(0)
+#define PERIPH_NUM_RICH_LAYERS	BIT(4)
+#define PERIPH_SPLIT_EN		BIT(8)
+#define PERIPH_TBU_EN		BIT(12)
+#define PERIPH_AFBC_DMA_EN	BIT(16)
+#define PERIPH_CONFIGURATION_ID	0x1D4
+
+/* LPU register */
+#define LPU_TBU_STATUS		0x0B4
+#define LPU_RAXI_CONTROL	0x0D0
+#define LPU_WAXI_CONTROL	0x0D4
+#define LPU_TBU_CONTROL		0x0D8
+
+/* LPU_xAXI_CONTROL_BITS */
+#define TO_RAXI_AOUTSTDCAPB(x)	(x)
+#define TO_RAXI_BOUTSTDCAPB(x)	((x) << 8)
+#define TO_RAXI_BEN(x)		((x) << 15)
+#define TO_xAXI_BURSTLEN(x)	((x) << 16)
+#define TO_xAXI_AxQOS(x)	((x) << 24)
+#define TO_xAXI_ORD(x)		((x) << 31)
+#define TO_WAXI_OUTSTDCAPB(x)	(x)
+
+#define RAXI_AOUTSTDCAPB_MASK	0x7F
+#define RAXI_BOUTSTDCAPB_MASK	0x7F00
+#define RAXI_BEN_MASK		BIT(15)
+#define xAXI_BURSTLEN_MASK	0x3F0000
+#define xAXI_AxQOS_MASK		0xF000000
+#define xAXI_ORD_MASK		BIT(31)
+#define WAXI_OUTSTDCAPB_MASK	0x3F
+
+/* LPU_TBU_CONTROL BITS */
+#define TO_TBU_DOUTSTDCAPB(x)	(x)
+#define TBU_DOUTSTDCAPB_MASK	0x3F
+
+/* LPU_IRQ_BITS */
+#define LPU_IRQ_IBSY		BIT(10)
+#define LPU_IRQ_ERR		BIT(11)
+#define LPU_IRQ_EOW		BIT(12)
+#define LPU_IRQ_PL0		BIT(13)
+
+/* LPU_STATUS_BITS */
+#define LPU_STATUS_AXIED(x)	((x) & 0xF)
+#define LPU_STATUS_AXIE		BIT(4)
+#define LPU_STATUS_AXIRP	BIT(5)
+#define LPU_STATUS_AXIWP	BIT(6)
+#define LPU_STATUS_ACE0		BIT(16)
+#define LPU_STATUS_ACE1		BIT(17)
+#define LPU_STATUS_ACE2		BIT(18)
+#define LPU_STATUS_ACE3		BIT(19)
+#define LPU_STATUS_ACTIVE	BIT(31)
+
+#define AXIEID_MASK		0xF
+#define AXIE_MASK		LPU_STATUS_AXIE
+#define AXIRP_MASK		LPU_STATUS_AXIRP
+#define AXIWP_MASK		LPU_STATUS_AXIWP
+
+#define FROM_AXIEID(reg)	((reg) & AXIEID_MASK)
+#define TO_AXIE(x)		((x) << 4)
+#define FROM_AXIRP(reg)		(((reg) & AXIRP_MASK) >> 5)
+#define FROM_AXIWP(reg)		(((reg) & AXIWP_MASK) >> 6)
+
+/* LPU_TBU_STATUS_BITS */
+#define LPU_TBU_STATUS_TCF	BIT(1)
+#define LPU_TBU_STATUS_TTNG	BIT(2)
+#define LPU_TBU_STATUS_TITR	BIT(8)
+#define LPU_TBU_STATUS_TEMR	BIT(16)
+#define LPU_TBU_STATUS_TTF	BIT(31)
+
+/* LPU_TBU_CONTROL BITS */
+#define LPU_TBU_CTRL_TLBPEN	BIT(16)
+
+/* CROSSBAR CONTROL BITS */
+#define CBU_INPUT_CTRL_EN	BIT(0)
+#define CBU_NUM_INPUT_IDS	5
+#define CBU_NUM_OUTPUT_IDS	5
+
+/* CU register */
+#define CU_BG_COLOR		0x0DC
+#define CU_INPUT0_SIZE		0x0E0
+#define CU_INPUT0_OFFSET	0x0E4
+#define CU_INPUT0_CONTROL	0x0E8
+#define CU_INPUT1_SIZE		0x0F0
+#define CU_INPUT1_OFFSET	0x0F4
+#define CU_INPUT1_CONTROL	0x0F8
+#define CU_INPUT2_SIZE		0x100
+#define CU_INPUT2_OFFSET	0x104
+#define CU_INPUT2_CONTROL	0x108
+#define CU_INPUT3_SIZE		0x110
+#define CU_INPUT3_OFFSET	0x114
+#define CU_INPUT3_CONTROL	0x118
+#define CU_INPUT4_SIZE		0x120
+#define CU_INPUT4_OFFSET	0x124
+#define CU_INPUT4_CONTROL	0x128
+
+#define CU_PER_INPUT_REGS	4
+
+#define CU_NUM_INPUT_IDS	5
+#define CU_NUM_OUTPUT_IDS	1
+
+/* CU control register bits */
+#define CU_CTRL_COPROC		BIT(0)
+
+/* CU_IRQ_BITS */
+#define CU_IRQ_OVR		BIT(9)
+#define CU_IRQ_ERR		BIT(11)
+
+/* CU_STATUS_BITS */
+#define CU_STATUS_CPE		BIT(0)
+#define CU_STATUS_ZME		BIT(1)
+#define CU_STATUS_CFGE		BIT(2)
+#define CU_STATUS_ACTIVE	BIT(31)
+
+/* CU input control register bits */
+#define CU_INPUT_CTRL_EN	BIT(0)
+#define CU_INPUT_CTRL_PAD	BIT(1)
+#define CU_INPUT_CTRL_PMUL	BIT(2)
+#define CU_INPUT_CTRL_ALPHA(x)	(((x) & 0xFF) << 8)
+
+/* DOU register */
+
+/* DOU_IRQ_BITS */
+#define DOU_IRQ_UND		BIT(8)
+#define DOU_IRQ_ERR		BIT(11)
+#define DOU_IRQ_PL0		BIT(13)
+#define DOU_IRQ_PL1		BIT(14)
+
+/* DOU_STATUS_BITS */
+#define DOU_STATUS_DRIFTTO	BIT(0)
+#define DOU_STATUS_FRAMETO	BIT(1)
+#define DOU_STATUS_TETO		BIT(2)
+#define DOU_STATUS_CSCE		BIT(8)
+#define DOU_STATUS_ACTIVE	BIT(31)
+
+/* Layer registers */
+#define LAYER_INFO		0x0C0
+#define LAYER_R_CONTROL		0x0D4
+#define LAYER_FMT		0x0D8
+#define LAYER_LT_COEFFTAB	0x0DC
+#define LAYER_PALPHA		0x0E4
+
+#define LAYER_YUV_RGB_COEFF0	0x130
+
+#define LAYER_AD_H_CROP		0x164
+#define LAYER_AD_V_CROP		0x168
+
+#define LAYER_RGB_RGB_COEFF0	0x170
+
+/* L_CONTROL_BITS */
+#define L_EN			BIT(0)
+#define L_IT			BIT(4)
+#define L_R2R			BIT(5)
+#define L_FT			BIT(6)
+#define L_ROT(x)		(((x) & 3) << 8)
+#define L_HFLIP			BIT(10)
+#define L_VFLIP			BIT(11)
+#define L_TBU_EN		BIT(16)
+#define L_A_RCACHE(x)		(((x) & 0xF) << 28)
+#define L_ROT_R0		0
+#define L_ROT_R90		1
+#define L_ROT_R180		2
+#define L_ROT_R270		3
+
+/* LAYER_R_CONTROL BITS */
+#define LR_CHI422_BILINEAR	0
+#define LR_CHI422_REPLICATION	1
+#define LR_CHI420_JPEG		(0 << 2)
+#define LR_CHI420_MPEG		(1 << 2)
+
+#define L_ITSEL(x)		((x) & 0xFFF)
+#define L_FTSEL(x)		(((x) & 0xFFF) << 16)
+
+#define LAYER_PER_PLANE_REGS	4
+
+/* Layer_WR registers */
+#define LAYER_WR_PROG_LINE	0x0D4
+#define LAYER_WR_FORMAT		0x0D8
+
+/* Layer_WR control bits */
+#define LW_OFM			BIT(4)
+#define LW_LALPHA(x)		(((x) & 0xFF) << 8)
+#define LW_A_WCACHE(x)		(((x) & 0xF) << 28)
+#define LW_TBU_EN		BIT(16)
+
+#define AxCACHE_MASK		0xF0000000
+
+/* Layer AXI R/W cache setting */
+#define AxCACHE_B		BIT(0)	/* Bufferable */
+#define AxCACHE_M		BIT(1)	/* Modifiable */
+#define AxCACHE_RA		BIT(2)	/* Read-Allocate */
+#define AxCACHE_WA		BIT(3)	/* Write-Allocate */
+
+/* Layer info bits */
+#define L_INFO_RF		BIT(0)
+#define L_INFO_CM		BIT(1)
+#define L_INFO_ABUF_SIZE(x)	(((x) >> 4) & 0x7)
+
+/* Scaler registers */
+#define SC_COEFFTAB		0x0DC
+#define SC_OUT_SIZE		0x0E4
+#define SC_H_CROP		0x0E8
+#define SC_V_CROP		0x0EC
+#define SC_H_INIT_PH		0x0F0
+#define SC_H_DELTA_PH		0x0F4
+#define SC_V_INIT_PH		0x0F8
+#define SC_V_DELTA_PH		0x0FC
+#define SC_ENH_LIMITS		0x130
+#define SC_ENH_COEFF0		0x134
+
+#define SC_MAX_ENH_COEFF	9
+
+/* SC_CTRL_BITS */
+#define SC_CTRL_SCL		BIT(0)
+#define SC_CTRL_LS		BIT(1)
+#define SC_CTRL_AP		BIT(4)
+#define SC_CTRL_IENH		BIT(8)
+#define SC_CTRL_RGBSM		BIT(16)
+#define SC_CTRL_ASM		BIT(17)
+
+#define SC_VTSEL(vtal)		((vtal) << 16)
+
+#define SC_NUM_INPUTS_IDS	1
+#define SC_NUM_OUTPUTS_IDS	1
+
+#define MG_NUM_INPUTS_IDS	2
+#define MG_NUM_OUTPUTS_IDS	1
+
+/* Merger registers */
+#define MG_INPUT_ID0		BLK_INPUT_ID0
+#define MG_INPUT_ID1		(MG_INPUT_ID0 + 4)
+#define MG_SIZE			BLK_SIZE
+
+/* Splitter registers */
+#define SP_OVERLAP_SIZE		0xD8
+
+/* Backend registers */
+#define BS_INFO			0x0C0
+#define BS_PROG_LINE		0x0D4
+#define BS_PREFETCH_LINE	0x0D8
+#define BS_BG_COLOR		0x0DC
+#define BS_ACTIVESIZE		0x0E0
+#define BS_HINTERVALS		0x0E4
+#define BS_VINTERVALS		0x0E8
+#define BS_SYNC			0x0EC
+#define BS_DRIFT_TO		0x100
+#define BS_FRAME_TO		0x104
+#define BS_TE_TO		0x108
+#define BS_T0_INTERVAL		0x110
+#define BS_T1_INTERVAL		0x114
+#define BS_T2_INTERVAL		0x118
+#define BS_CRC0_LOW		0x120
+#define BS_CRC0_HIGH		0x124
+#define BS_CRC1_LOW		0x128
+#define BS_CRC1_HIGH		0x12C
+#define BS_USER			0x130
+
+/* BS control register bits */
+#define BS_CTRL_EN		BIT(0)
+#define BS_CTRL_VM		BIT(1)
+#define BS_CTRL_BM		BIT(2)
+#define BS_CTRL_HMASK		BIT(4)
+#define BS_CTRL_VD		BIT(5)
+#define BS_CTRL_TE		BIT(8)
+#define BS_CTRL_TS		BIT(9)
+#define BS_CTRL_TM		BIT(12)
+#define BS_CTRL_DL		BIT(16)
+#define BS_CTRL_SBS		BIT(17)
+#define BS_CTRL_CRC		BIT(18)
+#define BS_CTRL_PM		BIT(20)
+
+/* BS active size/intervals */
+#define BS_H_INTVALS(hfp, hbp)	(((hfp) & 0xFFF) + (((hbp) & 0x3FF) << 16))
+#define BS_V_INTVALS(vfp, vbp)  (((vfp) & 0x3FFF) + (((vbp) & 0xFF) << 16))
+
+/* BS_SYNC bits */
+#define BS_SYNC_HSW(x)		((x) & 0x3FF)
+#define BS_SYNC_HSP		BIT(12)
+#define BS_SYNC_VSW(x)		(((x) & 0xFF) << 16)
+#define BS_SYNC_VSP		BIT(28)
+
+#define BS_NUM_INPUT_IDS	0
+#define BS_NUM_OUTPUT_IDS	0
+
+/* Image process registers */
+#define IPS_DEPTH		0x0D8
+#define IPS_RGB_RGB_COEFF0	0x130
+#define IPS_RGB_YUV_COEFF0	0x170
+
+#define IPS_DEPTH_MARK		0xF
+
+/* IPS control register bits */
+#define IPS_CTRL_RGB		BIT(0)
+#define IPS_CTRL_FT		BIT(4)
+#define IPS_CTRL_YUV		BIT(8)
+#define IPS_CTRL_CHD422		BIT(9)
+#define IPS_CTRL_CHD420		BIT(10)
+#define IPS_CTRL_LPF		BIT(11)
+#define IPS_CTRL_DITH		BIT(12)
+#define IPS_CTRL_CLAMP		BIT(16)
+#define IPS_CTRL_SBS		BIT(17)
+
+/* IPS info register bits */
+#define IPS_INFO_CHD420		BIT(10)
+
+#define IPS_NUM_INPUT_IDS	2
+#define IPS_NUM_OUTPUT_IDS	1
+
+/* FT_COEFF block registers */
+#define FT_COEFF0		0x80
+#define GLB_IT_COEFF		0x80
+
+/* GLB_SC_COEFF registers */
+#define GLB_SC_COEFF_ADDR	0x0080
+#define GLB_SC_COEFF_DATA	0x0084
+#define GLB_LT_COEFF_DATA	0x0080
+
+#define GLB_SC_COEFF_MAX_NUM	1024
+#define GLB_LT_COEFF_NUM	65
+/* GLB_SC_ADDR */
+#define SC_COEFF_R_ADDR		BIT(18)
+#define SC_COEFF_G_ADDR		BIT(17)
+#define SC_COEFF_B_ADDR		BIT(16)
+
+#define SC_COEFF_DATA(x, y)	(((y) & 0xFFFF) | (((x) & 0xFFFF) << 16))
+
+enum d71_blk_type {
+	D71_BLK_TYPE_GCU		= 0x00,
+	D71_BLK_TYPE_LPU		= 0x01,
+	D71_BLK_TYPE_CU			= 0x02,
+	D71_BLK_TYPE_DOU		= 0x03,
+	D71_BLK_TYPE_AEU		= 0x04,
+	D71_BLK_TYPE_GLB_LT_COEFF	= 0x05,
+	D71_BLK_TYPE_GLB_SCL_COEFF	= 0x06, /* SH/SV scaler coeff */
+	D71_BLK_TYPE_GLB_SC_COEFF	= 0x07,
+	D71_BLK_TYPE_PERIPH		= 0x08,
+	D71_BLK_TYPE_LPU_TRUSTED	= 0x09,
+	D71_BLK_TYPE_AEU_TRUSTED	= 0x0A,
+	D71_BLK_TYPE_LPU_LAYER		= 0x10,
+	D71_BLK_TYPE_LPU_WB_LAYER	= 0x11,
+	D71_BLK_TYPE_CU_SPLITTER	= 0x20,
+	D71_BLK_TYPE_CU_SCALER		= 0x21,
+	D71_BLK_TYPE_CU_MERGER		= 0x22,
+	D71_BLK_TYPE_DOU_IPS		= 0x30,
+	D71_BLK_TYPE_DOU_BS		= 0x31,
+	D71_BLK_TYPE_DOU_FT_COEFF	= 0x32,
+	D71_BLK_TYPE_AEU_DS		= 0x40,
+	D71_BLK_TYPE_AEU_AES		= 0x41,
+	D71_BLK_TYPE_RESERVED		= 0xFF
+};
+
+/* Constant of components */
+#define D71_MAX_PIPELINE		2
+#define D71_PIPELINE_MAX_SCALERS	2
+#define D71_PIPELINE_MAX_LAYERS		4
+
+#define D71_MAX_GLB_IT_COEFF		3
+#define D71_MAX_GLB_SCL_COEFF		4
+
+#define D71_MAX_LAYERS_PER_LPU		4
+#define D71_BLOCK_MAX_INPUT		9
+#define D71_BLOCK_MAX_OUTPUT		5
+#define D71_MAX_SC_PER_CU		2
+
+#define D71_BLOCK_OFFSET_PERIPH		0xFE00
+#define D71_BLOCK_SIZE			0x0200
+
+#define D71_DEFAULT_PREPRETCH_LINE	5
+#define D71_BUS_WIDTH_16_BYTES		16
+
+#define D71_MIN_LINE_SIZE		64
+#define D71_MIN_VERTICAL_SIZE		64
+#define D71_SC_MIN_LIN_SIZE		4
+#define D71_SC_MIN_VERTICAL_SIZE	4
+#define D71_SC_MAX_LIN_SIZE		2048
+#define D71_SC_MAX_VERTICAL_SIZE	4096
+
+#define D71_SC_MAX_UPSCALING		64
+#define D71_SC_MAX_DOWNSCALING		6
+#define D71_SC_SPLIT_OVERLAP		8
+#define D71_SC_ENH_SPLIT_OVERLAP	1
+
+#define D71_MG_MIN_MERGED_SIZE		4
+#define D71_MG_MAX_MERGED_HSIZE		4032
+#define D71_MG_MAX_MERGED_VSIZE		4096
+
+#define D71_PALPHA_DEF_MAP		0xFFAA5500
+#define D71_LAYER_CONTROL_DEFAULT	0x30000000
+#define D71_WB_LAYER_CONTROL_DEFAULT	0x3000FF00
+#define D71_BS_CONTROL_DEFAULT		0x00000002
+
+struct block_header {
+	u32 block_info;
+	u32 pipeline_info;
+	u32 input_ids[D71_BLOCK_MAX_INPUT];
+	u32 output_ids[D71_BLOCK_MAX_OUTPUT];
+};
+
+static inline u32 get_block_type(struct block_header *blk)
+{
+	return BLOCK_INFO_BLK_TYPE(blk->block_info);
+}
+
+#endif /* !_D71_REG_H_ */
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
index 3ca5718aa0c2..f88a14927be9 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
@@ -18,6 +18,24 @@
 #include "komeda_dev.h"
 #include "komeda_kms.h"
 
+void komeda_crtc_handle_event(struct komeda_crtc   *kcrtc,
+			      struct komeda_events *evts)
+{
+	struct drm_crtc *crtc = &kcrtc->base;
+	u32 events = evts->pipes[kcrtc->master->id];
+
+	if (events & KOMEDA_EVENT_VSYNC)
+		drm_crtc_handle_vblank(crtc);
+
+	/* will handle it together with the write back support */
+	if (events & KOMEDA_EVENT_EOW)
+		DRM_DEBUG("EOW.\n");
+
+	/* will handle it with crtc->flush */
+	if (events & KOMEDA_EVENT_FLIP)
+		DRM_DEBUG("FLIP Done.\n");
+}
+
 struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = {
 };
 
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
index 70e9bb7fa30c..24548b87e182 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
@@ -8,11 +8,57 @@
 #include <linux/of_device.h>
 #include <linux/of_graph.h>
 #include <linux/platform_device.h>
+#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#endif
 
 #include <drm/drm_print.h>
 
 #include "komeda_dev.h"
 
+static int komeda_register_show(struct seq_file *sf, void *x)
+{
+	struct komeda_dev *mdev = sf->private;
+	int i;
+
+	if (mdev->funcs->dump_register)
+		mdev->funcs->dump_register(mdev, sf);
+
+	for (i = 0; i < mdev->n_pipelines; i++)
+		komeda_pipeline_dump_register(mdev->pipelines[i], sf);
+
+	return 0;
+}
+
+static int komeda_register_open(struct inode *inode, struct file *filp)
+{
+	return single_open(filp, komeda_register_show, inode->i_private);
+}
+
+static const struct file_operations komeda_register_fops = {
+	.owner		= THIS_MODULE,
+	.open		= komeda_register_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+#ifdef CONFIG_DEBUG_FS
+static void komeda_debugfs_init(struct komeda_dev *mdev)
+{
+	if (!debugfs_initialized())
+		return;
+
+	mdev->debugfs_root = debugfs_create_dir("komeda", NULL);
+	if (IS_ERR_OR_NULL(mdev->debugfs_root))
+		return;
+
+	debugfs_create_file("register", 0444, mdev->debugfs_root,
+			    mdev, &komeda_register_fops);
+}
+#endif
+
 static int komeda_parse_pipe_dt(struct komeda_dev *mdev, struct device_node *np)
 {
 	struct komeda_pipeline *pipe;
@@ -53,6 +99,7 @@ static int komeda_parse_pipe_dt(struct komeda_dev *mdev, struct device_node *np)
 
 static int komeda_parse_dt(struct device *dev, struct komeda_dev *mdev)
 {
+	struct platform_device *pdev = to_platform_device(dev);
 	struct device_node *child, *np = dev->of_node;
 	struct clk *clk;
 	int ret;
@@ -62,6 +109,11 @@ static int komeda_parse_dt(struct device *dev, struct komeda_dev *mdev)
 		return PTR_ERR(clk);
 
 	mdev->mclk = clk;
+	mdev->irq  = platform_get_irq(pdev, 0);
+	if (mdev->irq < 0) {
+		DRM_ERROR("could not get IRQ number.\n");
+		return mdev->irq;
+	}
 
 	for_each_available_child_of_node(np, child) {
 		if (of_node_cmp(child->name, "pipeline") == 0) {
@@ -147,6 +199,16 @@ struct komeda_dev *komeda_dev_create(struct device *dev)
 		goto err_cleanup;
 	}
 
+	err = komeda_assemble_pipelines(mdev);
+	if (err) {
+		DRM_ERROR("assemble display pipelines failed.\n");
+		goto err_cleanup;
+	}
+
+#ifdef CONFIG_DEBUG_FS
+	komeda_debugfs_init(mdev);
+#endif
+
 	return mdev;
 
 err_cleanup:
@@ -160,6 +222,10 @@ void komeda_dev_destroy(struct komeda_dev *mdev)
 	struct komeda_dev_funcs *funcs = mdev->funcs;
 	int i;
 
+#ifdef CONFIG_DEBUG_FS
+	debugfs_remove_recursive(mdev->debugfs_root);
+#endif
+
 	for (i = 0; i < mdev->n_pipelines; i++) {
 		komeda_pipeline_destroy(mdev, mdev->pipelines[i]);
 		mdev->pipelines[i] = NULL;
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
index 0f77dead6a23..8eae2620ce77 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
@@ -13,6 +13,33 @@
 #include "malidp_product.h"
 #include "komeda_format_caps.h"
 
+#define KOMEDA_EVENT_VSYNC		BIT_ULL(0)
+#define KOMEDA_EVENT_FLIP		BIT_ULL(1)
+#define KOMEDA_EVENT_URUN		BIT_ULL(2)
+#define KOMEDA_EVENT_IBSY		BIT_ULL(3)
+#define KOMEDA_EVENT_OVR		BIT_ULL(4)
+#define KOMEDA_EVENT_EOW		BIT_ULL(5)
+#define KOMEDA_EVENT_MODE		BIT_ULL(6)
+
+#define KOMEDA_ERR_TETO			BIT_ULL(14)
+#define KOMEDA_ERR_TEMR			BIT_ULL(15)
+#define KOMEDA_ERR_TITR			BIT_ULL(16)
+#define KOMEDA_ERR_CPE			BIT_ULL(17)
+#define KOMEDA_ERR_CFGE			BIT_ULL(18)
+#define KOMEDA_ERR_AXIE			BIT_ULL(19)
+#define KOMEDA_ERR_ACE0			BIT_ULL(20)
+#define KOMEDA_ERR_ACE1			BIT_ULL(21)
+#define KOMEDA_ERR_ACE2			BIT_ULL(22)
+#define KOMEDA_ERR_ACE3			BIT_ULL(23)
+#define KOMEDA_ERR_DRIFTTO		BIT_ULL(24)
+#define KOMEDA_ERR_FRAMETO		BIT_ULL(25)
+#define KOMEDA_ERR_CSCE			BIT_ULL(26)
+#define KOMEDA_ERR_ZME			BIT_ULL(27)
+#define KOMEDA_ERR_MERR			BIT_ULL(28)
+#define KOMEDA_ERR_TCF			BIT_ULL(29)
+#define KOMEDA_ERR_TTNG			BIT_ULL(30)
+#define KOMEDA_ERR_TTF			BIT_ULL(31)
+
 /* malidp device id */
 enum {
 	MALI_D71 = 0,
@@ -39,6 +66,11 @@ struct komeda_product_data {
 
 struct komeda_dev;
 
+struct komeda_events {
+	u64 global;
+	u64 pipes[KOMEDA_MAX_PIPELINES];
+};
+
 /**
  * struct komeda_dev_funcs
  *
@@ -60,6 +92,20 @@ struct komeda_dev_funcs {
 	int (*enum_resources)(struct komeda_dev *mdev);
 	/** @cleanup: call to chip to cleanup komeda_dev->chip data */
 	void (*cleanup)(struct komeda_dev *mdev);
+	/**
+	 * @irq_handler:
+	 *
+	 * for CORE to get the HW event from the CHIP when interrupt happened.
+	 */
+	irqreturn_t (*irq_handler)(struct komeda_dev *mdev,
+				   struct komeda_events *events);
+	/** @enable_irq: enable irq */
+	int (*enable_irq)(struct komeda_dev *mdev);
+	/** @disable_irq: disable irq */
+	int (*disable_irq)(struct komeda_dev *mdev);
+
+	/** @dump_register: Optional, dump registers to seq_file */
+	void (*dump_register)(struct komeda_dev *mdev, struct seq_file *seq);
 };
 
 /**
@@ -81,6 +127,9 @@ struct komeda_dev {
 	/** @mck: HW main engine clk */
 	struct clk *mclk;
 
+	/** @irq: irq number */
+	int irq;
+
 	int n_pipelines;
 	struct komeda_pipeline *pipelines[KOMEDA_MAX_PIPELINES];
 
@@ -93,6 +142,8 @@ struct komeda_dev {
 	 * destroyed by &komeda_dev_funcs.cleanup()
 	 */
 	void *chip_data;
+
+	struct dentry *debugfs_root;
 };
 
 static inline bool
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
index 47a58ab20434..b214edbfbbc6 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
@@ -13,6 +13,7 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_irq.h>
 #include <drm/drm_vblank.h>
 
 #include "komeda_dev.h"
@@ -33,10 +34,31 @@ static int komeda_gem_cma_dumb_create(struct drm_file *file,
 	return drm_gem_cma_dumb_create_internal(file, dev, args);
 }
 
+static irqreturn_t komeda_kms_irq_handler(int irq, void *data)
+{
+	struct drm_device *drm = data;
+	struct komeda_dev *mdev = drm->dev_private;
+	struct komeda_kms_dev *kms = to_kdev(drm);
+	struct komeda_events evts;
+	irqreturn_t status;
+	u32 i;
+
+	/* Call into the CHIP to recognize events */
+	memset(&evts, 0, sizeof(evts));
+	status = mdev->funcs->irq_handler(mdev, &evts);
+
+	/* Notify the crtc to handle the events */
+	for (i = 0; i < kms->n_crtcs; i++)
+		komeda_crtc_handle_event(&kms->crtcs[i], &evts);
+
+	return status;
+}
+
 static struct drm_driver komeda_kms_driver = {
 	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC |
-			   DRIVER_PRIME,
+			   DRIVER_PRIME | DRIVER_HAVE_IRQ,
 	.lastclose			= drm_fb_helper_lastclose,
+	.irq_handler			= komeda_kms_irq_handler,
 	.gem_free_object_unlocked	= drm_gem_cma_free_object,
 	.gem_vm_ops			= &drm_gem_cma_vm_ops,
 	.dumb_create			= komeda_gem_cma_dumb_create,
@@ -144,12 +166,22 @@ struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
 
 	drm_mode_config_reset(drm);
 
-	err = drm_dev_register(drm, 0);
+	err = drm_irq_install(drm, mdev->irq);
 	if (err)
 		goto cleanup_mode_config;
 
+	err = mdev->funcs->enable_irq(mdev);
+	if (err)
+		goto uninstall_irq;
+
+	err = drm_dev_register(drm, 0);
+	if (err)
+		goto uninstall_irq;
+
 	return kms;
 
+uninstall_irq:
+	drm_irq_uninstall(drm);
 cleanup_mode_config:
 	drm_mode_config_cleanup(drm);
 free_kms:
@@ -162,7 +194,9 @@ void komeda_kms_detach(struct komeda_kms_dev *kms)
 	struct drm_device *drm = &kms->base;
 	struct komeda_dev *mdev = drm->dev_private;
 
+	mdev->funcs->disable_irq(mdev);
 	drm_dev_unregister(drm);
+	drm_irq_uninstall(drm);
 	component_unbind_all(mdev->dev, drm);
 	komeda_kms_cleanup_private_objs(mdev);
 	drm_mode_config_cleanup(drm);
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
index 874e9c9f0749..15ac8b85506c 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
@@ -12,6 +12,8 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_device.h>
 #include <drm/drm_writeback.h>
+#include <video/videomode.h>
+#include <video/display_timing.h>
 
 /** struct komeda_plane - komeda instance of drm_plane */
 struct komeda_plane {
@@ -108,6 +110,9 @@ int komeda_kms_add_private_objs(struct komeda_kms_dev *kms,
 				struct komeda_dev *mdev);
 void komeda_kms_cleanup_private_objs(struct komeda_dev *mdev);
 
+void komeda_crtc_handle_event(struct komeda_crtc   *kcrtc,
+			      struct komeda_events *evts);
+
 struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev);
 void komeda_kms_detach(struct komeda_kms_dev *kms);
 
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c
index f1908e9ef128..07398efc40f5 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c
@@ -19,17 +19,17 @@ komeda_pipeline_add(struct komeda_dev *mdev, size_t size,
 	if (mdev->n_pipelines + 1 > KOMEDA_MAX_PIPELINES) {
 		DRM_ERROR("Exceed max support %d pipelines.\n",
 			  KOMEDA_MAX_PIPELINES);
-		return NULL;
+		return ERR_PTR(-ENOSPC);
 	}
 
 	if (size < sizeof(*pipe)) {
 		DRM_ERROR("Request pipeline size too small.\n");
-		return NULL;
+		return ERR_PTR(-EINVAL);
 	}
 
 	pipe = devm_kzalloc(mdev->dev, size, GFP_KERNEL);
 	if (!pipe)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	pipe->mdev = mdev;
 	pipe->id   = mdev->n_pipelines;
@@ -142,32 +142,32 @@ komeda_component_add(struct komeda_pipeline *pipe,
 	if (max_active_inputs > KOMEDA_COMPONENT_N_INPUTS) {
 		WARN(1, "please large KOMEDA_COMPONENT_N_INPUTS to %d.\n",
 		     max_active_inputs);
-		return NULL;
+		return ERR_PTR(-ENOSPC);
 	}
 
 	pos = komeda_pipeline_get_component_pos(pipe, id);
 	if (!pos || (*pos))
-		return NULL;
+		return ERR_PTR(-EINVAL);
 
 	if (has_bit(id, KOMEDA_PIPELINE_LAYERS)) {
 		idx = id - KOMEDA_COMPONENT_LAYER0;
 		num = &pipe->n_layers;
 		if (idx != pipe->n_layers) {
 			DRM_ERROR("please add Layer by id sequence.\n");
-			return NULL;
+			return ERR_PTR(-EINVAL);
 		}
 	} else if (has_bit(id,  KOMEDA_PIPELINE_SCALERS)) {
 		idx = id - KOMEDA_COMPONENT_SCALER0;
 		num = &pipe->n_scalers;
 		if (idx != pipe->n_scalers) {
 			DRM_ERROR("please add Scaler by id sequence.\n");
-			return NULL;
+			return ERR_PTR(-EINVAL);
 		}
 	}
 
 	c = devm_kzalloc(pipe->mdev->dev, comp_sz, GFP_KERNEL);
 	if (!c)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	c->id = id;
 	c->hw_id = hw_id;
@@ -200,3 +200,98 @@ void komeda_component_destroy(struct komeda_dev *mdev,
 {
 	devm_kfree(mdev->dev, c);
 }
+
+static void komeda_component_dump(struct komeda_component *c)
+{
+	if (!c)
+		return;
+
+	DRM_DEBUG("	%s: ID %d-0x%08lx.\n",
+		  c->name, c->id, BIT(c->id));
+	DRM_DEBUG("		max_active_inputs:%d, supported_inputs: 0x%08x.\n",
+		  c->max_active_inputs, c->supported_inputs);
+	DRM_DEBUG("		max_active_outputs:%d, supported_outputs: 0x%08x.\n",
+		  c->max_active_outputs, c->supported_outputs);
+}
+
+static void komeda_pipeline_dump(struct komeda_pipeline *pipe)
+{
+	struct komeda_component *c;
+	int id;
+
+	DRM_INFO("Pipeline-%d: n_layers: %d, n_scalers: %d, output: %s\n",
+		 pipe->id, pipe->n_layers, pipe->n_scalers,
+		 pipe->of_output_dev ? pipe->of_output_dev->full_name : "none");
+
+	dp_for_each_set_bit(id, pipe->avail_comps) {
+		c = komeda_pipeline_get_component(pipe, id);
+
+		komeda_component_dump(c);
+	}
+}
+
+static void komeda_component_verify_inputs(struct komeda_component *c)
+{
+	struct komeda_pipeline *pipe = c->pipeline;
+	struct komeda_component *input;
+	int id;
+
+	dp_for_each_set_bit(id, c->supported_inputs) {
+		input = komeda_pipeline_get_component(pipe, id);
+		if (!input) {
+			c->supported_inputs &= ~(BIT(id));
+			DRM_WARN("Can not find input(ID-%d) for component: %s.\n",
+				 id, c->name);
+			continue;
+		}
+
+		input->supported_outputs |= BIT(c->id);
+	}
+}
+
+static void komeda_pipeline_assemble(struct komeda_pipeline *pipe)
+{
+	struct komeda_component *c;
+	int id;
+
+	dp_for_each_set_bit(id, pipe->avail_comps) {
+		c = komeda_pipeline_get_component(pipe, id);
+
+		komeda_component_verify_inputs(c);
+	}
+}
+
+int komeda_assemble_pipelines(struct komeda_dev *mdev)
+{
+	struct komeda_pipeline *pipe;
+	int i;
+
+	for (i = 0; i < mdev->n_pipelines; i++) {
+		pipe = mdev->pipelines[i];
+
+		komeda_pipeline_assemble(pipe);
+		komeda_pipeline_dump(pipe);
+	}
+
+	return 0;
+}
+
+void komeda_pipeline_dump_register(struct komeda_pipeline *pipe,
+				   struct seq_file *sf)
+{
+	struct komeda_component *c;
+	u32 id;
+
+	seq_printf(sf, "\n======== Pipeline-%d ==========\n", pipe->id);
+
+	if (pipe->funcs && pipe->funcs->dump_register)
+		pipe->funcs->dump_register(pipe, sf);
+
+	dp_for_each_set_bit(id, pipe->avail_comps) {
+		c = komeda_pipeline_get_component(pipe, id);
+
+		seq_printf(sf, "\n------%s------\n", c->name);
+		if (c->funcs->dump_register)
+			c->funcs->dump_register(c, sf);
+	}
+}
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
index 8c950bc8ae96..c30a790d0712 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
@@ -204,51 +204,74 @@ static inline u16 component_changed_inputs(struct komeda_component_state *st)
 	return component_disabling_inputs(st) | st->changed_active_inputs;
 }
 
+#define for_each_changed_input(st, i)	\
+	for ((i) = 0; (i) < (st)->component->max_active_inputs; (i)++)	\
+		if (has_bit((i), component_changed_inputs(st)))
+
 #define to_comp(__c)	(((__c) == NULL) ? NULL : &((__c)->base))
 #define to_cpos(__c)	((struct komeda_component **)&(__c))
 
-/* these structures are going to be filled in in uture patches */
 struct komeda_layer {
 	struct komeda_component base;
-	/* layer specific features and caps */
-	int layer_type; /* RICH, SIMPLE or WB */
+	/* accepted h/v input range before rotation */
+	struct malidp_range hsize_in, vsize_in;
+	u32 layer_type; /* RICH, SIMPLE or WB */
+	u32 supported_rots;
 };
 
 struct komeda_layer_state {
 	struct komeda_component_state base;
 	/* layer specific configuration state */
+	u16 hsize, vsize;
+	u32 rot;
+	dma_addr_t addr[3];
 };
 
-struct komeda_compiz {
+struct komeda_scaler {
 	struct komeda_component base;
-	/* compiz specific features and caps */
+	/* scaler features and caps */
 };
 
-struct komeda_compiz_state {
+struct komeda_scaler_state {
 	struct komeda_component_state base;
-	/* compiz specific configuration state */
 };
 
-struct komeda_scaler {
+struct komeda_compiz {
 	struct komeda_component base;
-	/* scaler features and caps */
+	struct malidp_range hsize, vsize;
 };
 
-struct komeda_scaler_state {
+struct komeda_compiz_input_cfg {
+	u16 hsize, vsize;
+	u16 hoffset, voffset;
+	u8 pixel_blend_mode, layer_alpha;
+};
+
+struct komeda_compiz_state {
 	struct komeda_component_state base;
+	/* composition size */
+	u16 hsize, vsize;
+	struct komeda_compiz_input_cfg cins[KOMEDA_COMPONENT_N_INPUTS];
 };
 
 struct komeda_improc {
 	struct komeda_component base;
+	u32 supported_color_formats;  /* DRM_RGB/YUV444/YUV420*/
+	u32 supported_color_depths; /* BIT(8) | BIT(10)*/
+	u8 supports_degamma : 1;
+	u8 supports_csc : 1;
+	u8 supports_gamma : 1;
 };
 
 struct komeda_improc_state {
 	struct komeda_component_state base;
+	u16 hsize, vsize;
 };
 
 /* display timing controller */
 struct komeda_timing_ctrlr {
 	struct komeda_component base;
+	u8 supports_dual_link : 1;
 };
 
 struct komeda_timing_ctrlr_state {
@@ -340,10 +363,13 @@ komeda_pipeline_add(struct komeda_dev *mdev, size_t size,
 		    struct komeda_pipeline_funcs *funcs);
 void komeda_pipeline_destroy(struct komeda_dev *mdev,
 			     struct komeda_pipeline *pipe);
-
+int komeda_assemble_pipelines(struct komeda_dev *mdev);
 struct komeda_component *
 komeda_pipeline_get_component(struct komeda_pipeline *pipe, int id);
 
+void komeda_pipeline_dump_register(struct komeda_pipeline *pipe,
+				   struct seq_file *sf);
+
 /* component APIs */
 struct komeda_component *
 komeda_component_add(struct komeda_pipeline *pipe,