[PATCH v4 7/9] drm/exynos: Add driver for Exynos Scaler module

[Marek Szyprowski <m.szyprowski@samsung.com>]

From: Andrzej Pietrasiewicz <andrzej.p@samsung.com>

Exynos Scaler is a hardware module, which processes graphic data fetched
from memory and transfers the resultant dato another memory buffer.
Graphics data can be up/down-scaled, rotated, flipped and converted color
space. Scaler hardware modules are a part of Exynos5420 and newer Exynos
SoCs.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 .../devicetree/bindings/gpu/samsung-scaler.txt     |  27 +
 drivers/gpu/drm/exynos/Kconfig                     |   6 +
 drivers/gpu/drm/exynos/Makefile                    |   1 +
 drivers/gpu/drm/exynos/exynos_drm_drv.c            |   3 +
 drivers/gpu/drm/exynos/exynos_drm_drv.h            |   1 +
 drivers/gpu/drm/exynos/exynos_drm_scaler.c         | 716 +++++++++++++++++++++
 drivers/gpu/drm/exynos/regs-scaler.h               | 426 ++++++++++++
 7 files changed, 1180 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpu/samsung-scaler.txt
 create mode 100644 drivers/gpu/drm/exynos/exynos_drm_scaler.c
 create mode 100644 drivers/gpu/drm/exynos/regs-scaler.h

diff --git a/Documentation/devicetree/bindings/gpu/samsung-scaler.txt b/Documentation/devicetree/bindings/gpu/samsung-scaler.txt
new file mode 100644
index 000000000000..9c3d98105dfd
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpu/samsung-scaler.txt
@@ -0,0 +1,27 @@
+* Samsung Exynos Image Scaler
+
+Required properties:
+  - compatible : value should be one of the following:
+	(a) "samsung,exynos5420-scaler" for Scaler IP in Exynos5420
+	(b) "samsung,exynos5433-scaler" for Scaler IP in Exynos5433
+
+  - reg : Physical base address of the IP registers and length of memory
+	  mapped region.
+
+  - interrupts : Interrupt specifier for scaler interrupt, according to format
+		 specific to interrupt parent.
+
+  - clocks : Clock specifier for scaler clock, according to generic clock
+	     bindings. (See Documentation/devicetree/bindings/clock/exynos*.txt)
+
+  - clock-names : Names of clocks. For exynos scaler, it should be "mscl"
+		  on 5420 and "pclk", "aclk" and "aclk_xiu" on 5433.
+
+Example:
+	scaler@12800000 {
+		compatible = "samsung,exynos5420-scaler";
+		reg = <0x12800000 0x1294>;
+		interrupts = <0 220 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&clock CLK_MSCL0>;
+		clock-names = "mscl";
+	};
diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
index 73f06a3a8bec..bb6fad57e18a 100644
--- a/drivers/gpu/drm/exynos/Kconfig
+++ b/drivers/gpu/drm/exynos/Kconfig
@@ -109,6 +109,12 @@ config DRM_EXYNOS_ROTATOR
 	help
 	  Choose this option if you want to use Exynos Rotator for DRM.
 
+config DRM_EXYNOS_SCALER
+	bool "Scaler"
+	select DRM_EXYNOS_IPP
+	help
+	  Choose this option if you want to use Exynos Scaler for DRM.
+
 config DRM_EXYNOS_GSC
 	bool "GScaler"
 	depends on VIDEO_SAMSUNG_EXYNOS_GSC=n
diff --git a/drivers/gpu/drm/exynos/Makefile b/drivers/gpu/drm/exynos/Makefile
index f663490e949d..aa84472ac093 100644
--- a/drivers/gpu/drm/exynos/Makefile
+++ b/drivers/gpu/drm/exynos/Makefile
@@ -20,6 +20,7 @@ exynosdrm-$(CONFIG_DRM_EXYNOS_G2D)	+= exynos_drm_g2d.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_IPP)	+= exynos_drm_ipp.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_FIMC)	+= exynos_drm_fimc.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_ROTATOR)	+= exynos_drm_rotator.o
+exynosdrm-$(CONFIG_DRM_EXYNOS_SCALER)	+= exynos_drm_scaler.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_GSC)	+= exynos_drm_gsc.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_MIC)     += exynos_drm_mic.o
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 4afeffa024f3..b2582ae993ff 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -260,6 +260,9 @@ static struct exynos_drm_driver_info exynos_drm_drivers[] = {
 	}, {
 		DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
 		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
+		DRM_COMPONENT_DRIVER
 	}, {
 		DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
 		DRM_COMPONENT_DRIVER
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 8b3b31d35168..8dc8537f4fd1 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -293,6 +293,7 @@ extern struct platform_driver vidi_driver;
 extern struct platform_driver g2d_driver;
 extern struct platform_driver fimc_driver;
 extern struct platform_driver rotator_driver;
+extern struct platform_driver scaler_driver;
 extern struct platform_driver gsc_driver;
 extern struct platform_driver mic_driver;
 #endif
diff --git a/drivers/gpu/drm/exynos/exynos_drm_scaler.c b/drivers/gpu/drm/exynos/exynos_drm_scaler.c
new file mode 100644
index 000000000000..d82b474d8078
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_drm_scaler.c
@@ -0,0 +1,716 @@
+/*
+ * Copyright (C) 2017 Samsung Electronics Co.Ltd
+ * Author:
+ *	Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundationr
+ */
+
+#include <linux/kernel.h>
+#include <linux/component.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+
+#include <drm/drmP.h>
+#include <drm/exynos_drm.h>
+#include "regs-scaler.h"
+#include "exynos_drm_fb.h"
+#include "exynos_drm_drv.h"
+#include "exynos_drm_iommu.h"
+#include "exynos_drm_ipp.h"
+
+#define scaler_read(offset)		readl(scaler->regs + (offset))
+#define scaler_write(cfg, offset)	writel(cfg, scaler->regs + (offset))
+#define SCALER_MAX_CLK			4
+#define SCALER_AUTOSUSPEND_DELAY	2000
+
+struct scaler_data {
+	const char	*clk_name[SCALER_MAX_CLK];
+	unsigned	num_clk;
+	const struct exynos_drm_ipp_formats *formats;
+};
+
+struct scaler_context {
+	struct exynos_drm_ipp		ipp;
+	struct drm_device		*drm_dev;
+	struct device			*dev;
+	void __iomem			*regs;
+	struct clk			*clock[SCALER_MAX_CLK];
+	struct exynos_drm_ipp_task	*task;
+	const struct scaler_data	*scaler_data;
+};
+
+static u32 scaler_get_format(u32 drm_fmt)
+{
+	switch (drm_fmt) {
+	case DRM_FORMAT_NV21:
+		return SCALER_YUV420_2P_UV;
+	case DRM_FORMAT_NV12:
+		return SCALER_YUV420_2P_VU;
+	case DRM_FORMAT_YUV420:
+		return SCALER_YUV420_3P;
+	case DRM_FORMAT_YUYV:
+		return SCALER_YUV422_1P_YUYV;
+	case DRM_FORMAT_UYVY:
+		return SCALER_YUV422_1P_UYVY;
+	case DRM_FORMAT_YVYU:
+		return SCALER_YUV422_1P_YVYU;
+	case DRM_FORMAT_NV61:
+		return SCALER_YUV422_2P_UV;
+	case DRM_FORMAT_NV16:
+		return SCALER_YUV422_2P_VU;
+	case DRM_FORMAT_YUV422:
+		return SCALER_YUV422_3P;
+	case DRM_FORMAT_NV42:
+		return SCALER_YUV444_2P_UV;
+	case DRM_FORMAT_NV24:
+		return SCALER_YUV444_2P_VU;
+	case DRM_FORMAT_YUV444:
+		return SCALER_YUV444_3P;
+	case DRM_FORMAT_RGB565:
+		return SCALER_RGB_565;
+	case DRM_FORMAT_XRGB1555:
+		return SCALER_ARGB1555;
+	case DRM_FORMAT_ARGB1555:
+		return SCALER_ARGB1555;
+	case DRM_FORMAT_XRGB4444:
+		return SCALER_ARGB4444;
+	case DRM_FORMAT_ARGB4444:
+		return SCALER_ARGB4444;
+	case DRM_FORMAT_XRGB8888:
+		return SCALER_ARGB8888;
+	case DRM_FORMAT_ARGB8888:
+		return SCALER_ARGB8888;
+	case DRM_FORMAT_RGBX8888:
+		return SCALER_RGBA8888;
+	case DRM_FORMAT_RGBA8888:
+		return SCALER_RGBA8888;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int scaler_check(struct exynos_drm_ipp *ipp,
+			struct exynos_drm_ipp_task *task)
+{
+	struct exynos_drm_ipp_buffer *src_buf = &task->src;
+	struct exynos_drm_ipp_buffer *dst_buf = &task->dst;
+
+	if (src_buf->format->num_planes > 2 &&
+		src_buf->buf.pitch[2] != src_buf->buf.pitch[1])
+		return -EINVAL;
+
+	if (dst_buf->format->num_planes > 2 &&
+		dst_buf->buf.pitch[2] != dst_buf->buf.pitch[1])
+		return -EINVAL;
+
+	return 0;
+}
+
+static inline void scaler_enable_int(struct scaler_context *scaler)
+{
+	u32 val;
+
+	val = SCALER_INT_EN_TIMEOUT |
+		SCALER_INT_EN_ILLEGAL_BLEND |
+		SCALER_INT_EN_ILLEGAL_RATIO |
+		SCALER_INT_EN_ILLEGAL_DST_HEIGHT |
+		SCALER_INT_EN_ILLEGAL_DST_WIDTH |
+		SCALER_INT_EN_ILLEGAL_DST_V_POS |
+		SCALER_INT_EN_ILLEGAL_DST_H_POS |
+		SCALER_INT_EN_ILLEGAL_DST_C_SPAN |
+		SCALER_INT_EN_ILLEGAL_DST_Y_SPAN |
+		SCALER_INT_EN_ILLEGAL_DST_CR_BASE |
+		SCALER_INT_EN_ILLEGAL_DST_CB_BASE |
+		SCALER_INT_EN_ILLEGAL_DST_Y_BASE |
+		SCALER_INT_EN_ILLEGAL_DST_COLOR |
+		SCALER_INT_EN_ILLEGAL_SRC_HEIGHT |
+		SCALER_INT_EN_ILLEGAL_SRC_WIDTH |
+		SCALER_INT_EN_ILLEGAL_SRC_CV_POS |
+		SCALER_INT_EN_ILLEGAL_SRC_CH_POS |
+		SCALER_INT_EN_ILLEGAL_SRC_YV_POS |
+		SCALER_INT_EN_ILLEGAL_SRC_YH_POS |
+		SCALER_INT_EN_ILLEGAL_DST_SPAN |
+		SCALER_INT_EN_ILLEGAL_SRC_Y_SPAN |
+		SCALER_INT_EN_ILLEGAL_SRC_CR_BASE |
+		SCALER_INT_EN_ILLEGAL_SRC_CB_BASE |
+		SCALER_INT_EN_ILLEGAL_SRC_Y_BASE |
+		SCALER_INT_EN_ILLEGAL_SRC_COLOR |
+		SCALER_INT_EN_FRAME_END;
+	scaler_write(val, SCALER_INT_EN);
+}
+
+static inline void scaler_set_src_fmt(struct scaler_context *scaler,
+	u32 src_fmt)
+{
+	u32 val;
+
+	val = SCALER_SRC_CFG_SET_COLOR_FORMAT(src_fmt);
+	scaler_write(val, SCALER_SRC_CFG);
+}
+
+static inline void scaler_set_src_base(struct scaler_context *scaler,
+	struct exynos_drm_ipp_buffer *src_buf)
+{
+	static unsigned int bases[] = {
+		SCALER_SRC_Y_BASE,
+		SCALER_SRC_CB_BASE,
+		SCALER_SRC_CR_BASE,
+	};
+	int i;
+
+	for (i = 0; i < src_buf->format->num_planes; ++i)
+		scaler_write(src_buf->dma_addr[i], bases[i]);
+}
+
+static inline void scaler_set_src_span(struct scaler_context *scaler,
+	struct exynos_drm_ipp_buffer *src_buf)
+{
+	u32 val;
+
+	val = SCALER_SRC_SPAN_SET_Y_SPAN(src_buf->buf.pitch[0] /
+		src_buf->format->cpp[0]);
+
+	if (src_buf->format->num_planes > 1)
+		val |= SCALER_SRC_SPAN_SET_C_SPAN(src_buf->buf.pitch[1]);
+
+	scaler_write(val, SCALER_SRC_SPAN);
+}
+
+static inline void scaler_set_src_luma_pos(struct scaler_context *scaler,
+	struct drm_exynos_ipp_task_rect *src_pos)
+{
+	u32 val;
+
+	val = SCALER_SRC_Y_POS_SET_YH_POS(src_pos->x << 2);
+	val |=  SCALER_SRC_Y_POS_SET_YV_POS(src_pos->y << 2);
+	scaler_write(val, SCALER_SRC_Y_POS);
+	scaler_write(val, SCALER_SRC_C_POS); /* ATTENTION! */
+}
+
+static inline void scaler_set_src_wh(struct scaler_context *scaler,
+	struct drm_exynos_ipp_task_rect *src_pos)
+{
+	u32 val;
+
+	val = SCALER_SRC_WH_SET_WIDTH(src_pos->w);
+	val |= SCALER_SRC_WH_SET_HEIGHT(src_pos->h);
+	scaler_write(val, SCALER_SRC_WH);
+}
+
+static inline void scaler_set_dst_fmt(struct scaler_context *scaler,
+	u32 dst_fmt)
+{
+	u32 val;
+
+	val = SCALER_DST_CFG_SET_COLOR_FORMAT(dst_fmt);
+	scaler_write(val, SCALER_DST_CFG);
+}
+
+static inline void scaler_set_dst_base(struct scaler_context *scaler,
+	struct exynos_drm_ipp_buffer *dst_buf)
+{
+	static unsigned int bases[] = {
+		SCALER_DST_Y_BASE,
+		SCALER_DST_CB_BASE,
+		SCALER_DST_CR_BASE,
+	};
+	int i;
+
+	for (i = 0; i < dst_buf->format->num_planes; ++i)
+		scaler_write(dst_buf->dma_addr[i], bases[i]);
+}
+
+static inline void scaler_set_dst_span(struct scaler_context *scaler,
+	struct exynos_drm_ipp_buffer *dst_buf)
+{
+	u32 val;
+
+	val = SCALER_DST_SPAN_SET_Y_SPAN(dst_buf->buf.pitch[0] /
+		dst_buf->format->cpp[0]);
+
+	if (dst_buf->format->num_planes > 1)
+		val |= SCALER_DST_SPAN_SET_C_SPAN(dst_buf->buf.pitch[1]);
+
+	scaler_write(val, SCALER_DST_SPAN);
+}
+
+static inline void scaler_set_dst_luma_pos(struct scaler_context *scaler,
+	struct drm_exynos_ipp_task_rect *dst_pos)
+{
+	u32 val;
+
+	val = SCALER_DST_WH_SET_WIDTH(dst_pos->w);
+	val |= SCALER_DST_WH_SET_HEIGHT(dst_pos->h);
+	scaler_write(val, SCALER_DST_WH);
+}
+
+static inline void scaler_set_dst_wh(struct scaler_context *scaler,
+	struct drm_exynos_ipp_task_rect *dst_pos)
+{
+	u32 val;
+
+	val = SCALER_DST_POS_SET_H_POS(dst_pos->x);
+	val |= SCALER_DST_POS_SET_V_POS(dst_pos->y);
+	scaler_write(val, SCALER_DST_POS);
+}
+
+static inline void scaler_set_hv_ratio(struct scaler_context *scaler,
+	unsigned int rotation,
+	struct drm_exynos_ipp_task_rect *src_pos,
+	struct drm_exynos_ipp_task_rect *dst_pos)
+{
+	u32 val, h_ratio, v_ratio;
+
+	if (drm_rotation_90_or_270(rotation)) {
+		h_ratio = (src_pos->h << 16) / dst_pos->w;
+		v_ratio = (src_pos->w << 16) / dst_pos->h;
+	} else {
+		h_ratio = (src_pos->w << 16) / dst_pos->w;
+		v_ratio = (src_pos->h << 16) / dst_pos->h;
+	}
+
+	val = SCALER_H_RATIO_SET(h_ratio);
+	scaler_write(val, SCALER_H_RATIO);
+
+	val = SCALER_V_RATIO_SET(v_ratio);
+	scaler_write(val, SCALER_V_RATIO);
+}
+
+static inline void scaler_set_rotation(struct scaler_context *scaler,
+	unsigned int rotation)
+{
+	u32 val = 0;
+
+	if (rotation & DRM_MODE_ROTATE_90)
+		val |= SCALER_ROT_CFG_SET_ROTMODE(SCALER_ROT_MODE_90);
+	else if (rotation & DRM_MODE_ROTATE_180)
+		val |= SCALER_ROT_CFG_SET_ROTMODE(SCALER_ROT_MODE_180);
+	else if (rotation & DRM_MODE_ROTATE_270)
+		val |= SCALER_ROT_CFG_SET_ROTMODE(SCALER_ROT_MODE_270);
+	if (rotation & DRM_MODE_REFLECT_X)
+		val |= SCALER_ROT_CFG_FLIP_X_EN;
+	if (rotation & DRM_MODE_REFLECT_Y)
+		val |= SCALER_ROT_CFG_FLIP_Y_EN;
+	scaler_write(val, SCALER_ROT_CFG);
+}
+
+static inline void scaler_set_csc(struct scaler_context *scaler,
+	const struct drm_format_info *fmt)
+{
+	static const u32 csc_mtx[2][3][3] = {
+		{ /* YCbCr to RGB */
+			{0x254, 0x000, 0x331},
+			{0x254, 0xf38, 0xe60},
+			{0x254, 0x409, 0x000},
+		},
+		{ /* RGB to YCbCr */
+			{0x084, 0x102, 0x032},
+			{0xfb4, 0xf6b, 0x0e1},
+			{0x0e1, 0xf44, 0xfdc},
+		},
+	};
+	int i, j, dir;
+
+	switch (fmt->format) {
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_XRGB1555:
+	case DRM_FORMAT_ARGB1555:
+	case DRM_FORMAT_XRGB4444:
+	case DRM_FORMAT_ARGB4444:
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_RGBX8888:
+	case DRM_FORMAT_RGBA8888:
+		dir = 1;
+		break;
+	default:
+		dir = 0;
+	}
+
+	for (i = 0; i < 3; i++)
+		for (j = 0; j < 3; j++)
+			scaler_write(csc_mtx[dir][i][j], SCALER_CSC_COEF(j, i));
+}
+
+static inline void scaler_set_timer(struct scaler_context *scaler,
+	unsigned int timer, unsigned int divider)
+{
+	u32 val;
+
+	val = SCALER_TIMEOUT_CTRL_TIMER_ENABLE;
+	val |= SCALER_TIMEOUT_CTRL_SET_TIMER_VALUE(timer);
+	val |= SCALER_TIMEOUT_CTRL_SET_TIMER_DIV(divider);
+	scaler_write(val, SCALER_TIMEOUT_CTRL);
+}
+
+static inline void scaler_start_hw(struct scaler_context *scaler)
+{
+	scaler_write(SCALER_CFG_START_CMD, SCALER_CFG);
+}
+
+static int scaler_commit(struct exynos_drm_ipp *ipp,
+			  struct exynos_drm_ipp_task *task)
+{
+	struct scaler_context *scaler =
+			container_of(ipp, struct scaler_context, ipp);
+
+	u32 src_fmt = scaler_get_format(task->src.buf.fourcc);
+	struct drm_exynos_ipp_task_rect *src_pos = &task->src.rect;
+
+	u32 dst_fmt = scaler_get_format(task->dst.buf.fourcc);
+	struct drm_exynos_ipp_task_rect *dst_pos = &task->dst.rect;
+
+	scaler->task = task;
+
+	pm_runtime_get_sync(scaler->dev);
+
+	scaler_set_src_fmt(scaler, src_fmt);
+	scaler_set_src_base(scaler, &task->src);
+	scaler_set_src_span(scaler, &task->src);
+	scaler_set_src_luma_pos(scaler, src_pos);
+	scaler_set_src_wh(scaler, src_pos);
+
+	scaler_set_dst_fmt(scaler, dst_fmt);
+	scaler_set_dst_base(scaler, &task->dst);
+	scaler_set_dst_span(scaler, &task->dst);
+	scaler_set_dst_luma_pos(scaler, dst_pos);
+	scaler_set_dst_wh(scaler, dst_pos);
+
+	scaler_set_hv_ratio(scaler, task->transform.rotation, src_pos, dst_pos);
+	scaler_set_rotation(scaler, task->transform.rotation);
+
+	scaler_set_csc(scaler, task->src.format);
+
+	scaler_set_timer(scaler, 0xffff, 0xf);
+
+	scaler_enable_int(scaler);
+	scaler_start_hw(scaler);
+
+	return 0;
+}
+
+static struct exynos_drm_ipp_funcs ipp_funcs = {
+	.check	= scaler_check,
+	.commit = scaler_commit,
+};
+
+static inline void scaler_disable_int(struct scaler_context *scaler)
+{
+	scaler_write(0, SCALER_INT_EN);
+}
+
+static inline u32 scaler_get_int_status(struct scaler_context *scaler)
+{
+	return scaler_read(SCALER_INT_STATUS);
+}
+
+static inline bool scaler_task_done(u32 val)
+{
+	return val & SCALER_INT_STATUS_FRAME_END ? 0 : -EINVAL;
+}
+
+static irqreturn_t scaler_irq_handler(int irq, void *arg)
+{
+	struct scaler_context *scaler = arg;
+
+	u32 val = scaler_get_int_status(scaler);
+
+	scaler_disable_int(scaler);
+
+	if (scaler->task) {
+		struct exynos_drm_ipp_task *task = scaler->task;
+
+		scaler->task = NULL;
+		pm_runtime_mark_last_busy(scaler->dev);
+		pm_runtime_put_autosuspend(scaler->dev);
+		exynos_drm_ipp_task_done(task, scaler_task_done(val));
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int scaler_bind(struct device *dev, struct device *master, void *data)
+{
+	struct scaler_context *scaler = dev_get_drvdata(dev);
+	struct drm_device *drm_dev = data;
+	struct exynos_drm_ipp *ipp = &scaler->ipp;
+
+	scaler->drm_dev = drm_dev;
+	drm_iommu_attach_device(drm_dev, dev);
+
+	exynos_drm_ipp_register(drm_dev, ipp, &ipp_funcs,
+			   DRM_EXYNOS_IPP_CAP_CROP |
+			   DRM_EXYNOS_IPP_CAP_ROTATE |
+			   DRM_EXYNOS_IPP_CAP_SCALE |
+			   DRM_EXYNOS_IPP_CAP_CONVERT,
+			   scaler->scaler_data->formats, "scaler");
+
+	dev_info(dev, "The exynos scaler has been probed successfully\n");
+
+	return 0;
+}
+
+static void scaler_unbind(struct device *dev, struct device *master,
+			void *data)
+{
+	struct scaler_context *scaler = dev_get_drvdata(dev);
+	struct drm_device *drm_dev = data;
+	struct exynos_drm_ipp *ipp = &scaler->ipp;
+
+	exynos_drm_ipp_unregister(drm_dev, ipp);
+	drm_iommu_detach_device(scaler->drm_dev, scaler->dev);
+}
+
+static const struct component_ops scaler_component_ops = {
+	.bind	= scaler_bind,
+	.unbind = scaler_unbind,
+};
+
+static int scaler_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct resource	*regs_res;
+	struct scaler_context *scaler;
+	int irq;
+	int ret, i;
+
+	scaler = devm_kzalloc(dev, sizeof(*scaler), GFP_KERNEL);
+	if (!scaler)
+		return -ENOMEM;
+
+	scaler->scaler_data =
+		(struct scaler_data *)of_device_get_match_data(dev);
+
+	scaler->dev = dev;
+	regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	scaler->regs = devm_ioremap_resource(dev, regs_res);
+	if (IS_ERR(scaler->regs))
+		return PTR_ERR(scaler->regs);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		dev_err(dev, "failed to get irq\n");
+		return irq;
+	}
+
+	ret = devm_request_threaded_irq(dev, irq, NULL,	scaler_irq_handler,
+					IRQF_ONESHOT, "drm_scaler", scaler);
+	if (ret < 0) {
+		dev_err(dev, "failed to request irq\n");
+		return ret;
+	}
+
+	for (i = 0; i < scaler->scaler_data->num_clk; ++i) {
+		scaler->clock[i] = devm_clk_get(dev, scaler->scaler_data->clk_name[i]);
+		if (IS_ERR(scaler->clock[i])) {
+			dev_err(dev, "failed to get clock\n");
+			return PTR_ERR(scaler->clock[i]);
+		}
+	}
+
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_set_autosuspend_delay(dev, SCALER_AUTOSUSPEND_DELAY);
+	pm_runtime_enable(dev);
+	platform_set_drvdata(pdev, scaler);
+
+	ret = component_add(dev, &scaler_component_ops);
+	if (ret)
+		goto err_ippdrv_register;
+
+	return 0;
+
+err_ippdrv_register:
+	pm_runtime_dont_use_autosuspend(dev);
+	pm_runtime_disable(dev);
+	return ret;
+}
+
+static int scaler_remove(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+
+	component_del(dev, &scaler_component_ops);
+	pm_runtime_dont_use_autosuspend(dev);
+	pm_runtime_disable(dev);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int clk_disable_unprepare_wrapper(struct clk *clk)
+{
+	clk_disable_unprepare(clk);
+
+	return 0;
+}
+
+static int scaler_clk_ctrl(struct scaler_context *scaler, bool enable)
+{
+	int (*clk_fun)(struct clk *clk), i;
+
+	clk_fun = enable ? clk_prepare_enable : clk_disable_unprepare_wrapper;
+
+	for (i = 0; i < scaler->scaler_data->num_clk; ++i)
+		clk_fun(scaler->clock[i]);
+
+	return 0;
+}
+
+static int scaler_runtime_suspend(struct device *dev)
+{
+	struct scaler_context *scaler = dev_get_drvdata(dev);
+
+	return  scaler_clk_ctrl(scaler, false);
+}
+
+static int scaler_runtime_resume(struct device *dev)
+{
+	struct scaler_context *scaler = dev_get_drvdata(dev);
+
+	return  scaler_clk_ctrl(scaler, true);
+}
+#endif
+
+static const struct dev_pm_ops scaler_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+	SET_RUNTIME_PM_OPS(scaler_runtime_suspend, scaler_runtime_resume,
+									NULL)
+};
+
+static const struct drm_exynos_ipp_limit scaler_5420_two_pixel_hv_limits[] = {
+	{ IPP_SIZE_LIMIT(BUFFER, .h = { 16, SZ_8K }, .v = { 16, SZ_8K }) },
+	{ IPP_SIZE_LIMIT(AREA, .h.align = 2, .v.align = 2) },
+	{ IPP_SCALE_LIMIT(.h = { 65536 * 1 / 4, 65536 * 16},
+			.v = { 65536 * 1 / 4, 65536 * 16}) },
+	{ }
+};
+
+static const struct drm_exynos_ipp_limit scaler_5420_two_pixel_h_limits[] = {
+	{ IPP_SIZE_LIMIT(BUFFER, .h = { 16, SZ_8K }, .v = { 16, SZ_8K }) },
+	{ IPP_SIZE_LIMIT(AREA, .h.align = 2, .v.align = 1) },
+	{ IPP_SCALE_LIMIT(.h = { 65536 * 1 / 4, 65536 * 16},
+			.v = { 65536 * 1 / 4, 65536 * 16}) },
+	{ }
+};
+
+static const struct drm_exynos_ipp_limit scaler_5420_one_pixel_limits[] = {
+	{ IPP_SIZE_LIMIT(BUFFER, .h = { 16, SZ_8K }, .v = { 16, SZ_8K }) },
+	{ IPP_SCALE_LIMIT(.h = { 65536 * 1 / 4, 65536 * 16},
+			.v = { 65536 * 1 / 4, 65536 * 16}) },
+	{ }
+};
+
+static const struct exynos_drm_ipp_formats exynos5420_formats[] = {
+	/* SCALER_YUV420_2P_UV */
+	{ IPP_SRCDST_FORMAT(NV21, scaler_5420_two_pixel_hv_limits) },
+
+	/* SCALER_YUV420_2P_VU */
+	{ IPP_SRCDST_FORMAT(NV12, scaler_5420_two_pixel_hv_limits) },
+
+	/* SCALER_YUV420_3P */
+	{ IPP_SRCDST_FORMAT(YUV420, scaler_5420_two_pixel_hv_limits) },
+
+	/* SCALER_YUV422_1P_YUYV */
+	{ IPP_SRCDST_FORMAT(YUYV, scaler_5420_two_pixel_h_limits) },
+
+	/* SCALER_YUV422_1P_UYVY */
+	{ IPP_SRCDST_FORMAT(UYVY, scaler_5420_two_pixel_h_limits) },
+
+	/* SCALER_YUV422_1P_YVYU */
+	{ IPP_SRCDST_FORMAT(YVYU, scaler_5420_two_pixel_h_limits) },
+
+	/* SCALER_YUV422_2P_UV */
+	{ IPP_SRCDST_FORMAT(NV61, scaler_5420_two_pixel_h_limits) },
+
+	/* SCALER_YUV422_2P_VU */
+	{ IPP_SRCDST_FORMAT(NV16, scaler_5420_two_pixel_h_limits) },
+
+	/* SCALER_YUV422_3P */
+	{ IPP_SRCDST_FORMAT(YUV422, scaler_5420_two_pixel_h_limits) },
+
+	/* SCALER_YUV444_2P_UV */
+	{ IPP_SRCDST_FORMAT(NV42, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_YUV444_2P_VU */
+	{ IPP_SRCDST_FORMAT(NV24, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_YUV444_3P */
+	{ IPP_SRCDST_FORMAT(YUV444, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_RGB_565 */
+	{ IPP_SRCDST_FORMAT(RGB565, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_ARGB1555 */
+	{ IPP_SRCDST_FORMAT(XRGB1555, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_ARGB1555 */
+	{ IPP_SRCDST_FORMAT(ARGB1555, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_ARGB4444 */
+	{ IPP_SRCDST_FORMAT(XRGB4444, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_ARGB4444 */
+	{ IPP_SRCDST_FORMAT(ARGB4444, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_ARGB8888 */
+	{ IPP_SRCDST_FORMAT(XRGB8888, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_ARGB8888 */
+	{ IPP_SRCDST_FORMAT(ARGB8888, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_RGBA8888 */
+	{ IPP_SRCDST_FORMAT(RGBX8888, scaler_5420_one_pixel_limits) },
+
+	/* SCALER_RGBA8888 */
+	{ IPP_SRCDST_FORMAT(RGBA8888, scaler_5420_one_pixel_limits) },
+
+	{ },
+};
+
+static const struct scaler_data exynos5420_data = {
+	.clk_name	= {"mscl"},
+	.num_clk	= 1,
+	.formats	= exynos5420_formats,
+};
+
+static const struct scaler_data exynos5433_data = {
+	.clk_name	= {"pclk", "aclk", "aclk_xiu"},
+	.num_clk	= 3,
+	.formats	= exynos5420_formats, /* intentional */
+};
+
+static const struct of_device_id exynos_scaler_match[] = {
+	{
+		.compatible = "samsung,exynos5420-scaler",
+		.data = &exynos5420_data,
+	},
+	{
+		.compatible = "samsung,exynos5433-scaler",
+		.data = &exynos5433_data,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, exynos_scaler_match);
+
+struct platform_driver scaler_driver = {
+	.probe		= scaler_probe,
+	.remove		= scaler_remove,
+	.driver		= {
+		.name	= "exynos-scaler",
+		.owner	= THIS_MODULE,
+		.pm	= &scaler_pm_ops,
+		.of_match_table = exynos_scaler_match,
+	},
+};
diff --git a/drivers/gpu/drm/exynos/regs-scaler.h b/drivers/gpu/drm/exynos/regs-scaler.h
new file mode 100644
index 000000000000..fc7ccad75e74
--- /dev/null
+++ b/drivers/gpu/drm/exynos/regs-scaler.h
@@ -0,0 +1,426 @@
+/* drivers/gpu/drm/exynos/regs-scaler.h
+ *
+ * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * Register definition file for Samsung scaler driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef EXYNOS_REGS_SCALER_H
+#define EXYNOS_REGS_SCALER_H
+
+/* Register part */
+
+/* Global setting */
+#define SCALER_STATUS			0x0	/* no shadow */
+#define SCALER_CFG			0x4
+
+/* Interrupt */
+#define SCALER_INT_EN			0x8	/* no shadow */
+#define SCALER_INT_STATUS		0xc	/* no shadow */
+
+/* SRC */
+#define SCALER_SRC_CFG			0x10
+#define SCALER_SRC_Y_BASE		0x14
+#define SCALER_SRC_CB_BASE		0x18
+#define SCALER_SRC_CR_BASE		0x294
+#define SCALER_SRC_SPAN			0x1c
+#define SCALER_SRC_Y_POS		0x20
+#define SCALER_SRC_WH			0x24
+#define SCALER_SRC_C_POS		0x28
+
+/* DST */
+#define SCALER_DST_CFG			0x30
+#define SCALER_DST_Y_BASE		0x34
+#define SCALER_DST_CB_BASE		0x38
+#define SCALER_DST_CR_BASE		0x298
+#define SCALER_DST_SPAN			0x3c
+#define SCALER_DST_WH			0x40
+#define SCALER_DST_POS			0x44
+
+/* Ratio */
+#define SCALER_H_RATIO			0x50
+#define SCALER_V_RATIO			0x54
+
+/* Rotation */
+#define SCALER_ROT_CFG			0x58
+
+/* Coefficient */
+/*
+ * YHCOEF_{x}{A|B|C|D}			CHCOEF_{x}{A|B|C|D}
+ *
+ *	A	B	C	D	A	B	C	D
+ * 0	60	64	68	6c	140	144	148	14c
+ * 1	70	74	78	7c	150	154	158	15c
+ * 2	80	84	88	8c	160	164	168	16c
+ * 3	90	94	98	9c	170	174	178	17c
+ * 4	a0	a4	a8	ac	180	184	188	18c
+ * 5	b0	b4	b8	bc	190	194	198	19c
+ * 6	c0	c4	c8	cc	1a0	1a4	1a8	1ac
+ * 7	d0	d4	d8	dc	1b0	1b4	1b8	1bc
+ * 8	e0	e4	e8	ec	1c0	1c4	1c8	1cc
+ *
+ *
+ * YVCOEF_{x}{A|B}			CVCOEF_{x}{A|B}
+ *
+ *	A	B			A	B
+ * 0	f0	f4			1d0	1d4
+ * 1	f8	fc			1d8	1dc
+ * 2	100	104			1e0	1e4
+ * 3	108	10c			1e8	1ec
+ * 4	110	114			1f0	1f4
+ * 5	118	11c			1f8	1fc
+ * 6	120	124			200	204
+ * 7	128	12c			208	20c
+ * 8	130	134			210	214
+ */
+#define _SCALER_HCOEF_DELTA(r, c)	((r) * 0x10 + (c) * 0x4)
+#define _SCALER_VCOEF_DELTA(r, c)	((r) * 0x8 + (c) * 0x4)
+
+#define SCALER_YHCOEF(r, c)		(0x60 + _SCALER_HCOEF_DELTA((r), (c)))
+#define SCALER_YVCOEF(r, c)		(0xf0 + _SCALER_VCOEF_DELTA((r), (c)))
+#define SCALER_CHCOEF(r, c)		(0x140 + _SCALER_HCOEF_DELTA((r), (c)))
+#define SCALER_CVCOEF(r, c)		(0x1d0 + _SCALER_VCOEF_DELTA((r), (c)))
+
+
+/* Color Space Conversion */
+#define SCALER_CSC_COEF(x, y)		(0x220 + (y) * 0xc + (x) * 0x4)
+
+/* Dithering */
+#define SCALER_DITH_CFG			0x250
+
+/* Version Number */
+#define SCALER_VER			0x260	/* no shadow */
+
+/* Cycle count and Timeout */
+#define SCALER_CYCLE_COUNT		0x278	/* no shadow */
+#define SCALER_TIMEOUT_CTRL		0x2c0	/* no shadow */
+#define SCALER_TIMEOUT_CNT		0x2c4	/* no shadow */
+
+/* Blending */
+#define SCALER_SRC_BLEND_COLOR		0x280
+#define SCALER_SRC_BLEND_ALPHA		0x284
+#define SCALER_DST_BLEND_COLOR		0x288
+#define SCALER_DST_BLEND_ALPHA		0x28c
+
+/* Color Fill */
+#define SCALER_FILL_COLOR		0x290
+
+/* Multiple Command Queue */
+#define SCALER_ADDR_Q_CONFIG		0x2a0	/* no shadow */
+#define SCALER_SRC_ADDR_Q_STATUS	0x2a4	/* no shadow */
+#define SCALER_SRC_ADDR_Q		0x2a8	/* no shadow */
+
+/* CRC */
+#define SCALER_CRC_COLOR00_10		0x2b0	/* no shadow */
+#define SCALER_CRC_COLOR20_30		0x2b4	/* no shadow */
+#define SCALER_CRC_COLOR01_11		0x2b8	/* no shadow */
+#define SCALER_CRC_COLOR21_31		0x2bc	/* no shadow */
+
+/* Shadow Registers */
+#define SCALER_SHADOW_OFFSET		0x1000
+
+
+/* Bit definition part */
+#define SCALER_MASK(hi_b, lo_b)		((1 << ((hi_b) - (lo_b) + 1)) - 1)
+#define SCALER_GET(reg, hi_b, lo_b)	\
+	(((reg) >> (lo_b)) & SCALER_MASK(hi_b, lo_b))
+#define SCALER_SET(val, hi_b, lo_b) \
+	(((val) & SCALER_MASK(hi_b, lo_b)) << lo_b)
+
+/* SCALER_STATUS */
+#define SCALER_STATUS_SCALER_RUNNING		(1 << 1)
+#define SCALER_STATUS_SCALER_READY_CLK_DOWN	(1 << 0)
+
+/* SCALER_CFG */
+#define SCALER_CFG_FILL_EN			(1 << 24)
+#define SCALER_CFG_BLEND_COLOR_DIVIDE_ALPHA_EN	(1 << 17)
+#define SCALER_CFG_BLEND_EN			(1 << 16)
+#define SCALER_CFG_CSC_Y_OFFSET_SRC_EN		(1 << 10)
+#define SCALER_CFG_CSC_Y_OFFSET_DST_EN		(1 << 9)
+#define SCALER_CFG_16_BURST_MODE		(1 << 8)
+#define SCALER_CFG_SOFT_RESET			(1 << 1)
+#define SCALER_CFG_START_CMD			(1 << 0)
+
+/* SCALER_INT_EN */
+#define SCALER_INT_EN_TIMEOUT			(1 << 31)
+#define SCALER_INT_EN_ILLEGAL_BLEND		(1 << 24)
+#define SCALER_INT_EN_ILLEGAL_RATIO		(1 << 23)
+#define SCALER_INT_EN_ILLEGAL_DST_HEIGHT	(1 << 22)
+#define SCALER_INT_EN_ILLEGAL_DST_WIDTH		(1 << 21)
+#define SCALER_INT_EN_ILLEGAL_DST_V_POS		(1 << 20)
+#define SCALER_INT_EN_ILLEGAL_DST_H_POS		(1 << 19)
+#define SCALER_INT_EN_ILLEGAL_DST_C_SPAN	(1 << 18)
+#define SCALER_INT_EN_ILLEGAL_DST_Y_SPAN	(1 << 17)
+#define SCALER_INT_EN_ILLEGAL_DST_CR_BASE	(1 << 16)
+#define SCALER_INT_EN_ILLEGAL_DST_CB_BASE	(1 << 15)
+#define SCALER_INT_EN_ILLEGAL_DST_Y_BASE	(1 << 14)
+#define SCALER_INT_EN_ILLEGAL_DST_COLOR		(1 << 13)
+#define SCALER_INT_EN_ILLEGAL_SRC_HEIGHT	(1 << 12)
+#define SCALER_INT_EN_ILLEGAL_SRC_WIDTH		(1 << 11)
+#define SCALER_INT_EN_ILLEGAL_SRC_CV_POS	(1 << 10)
+#define SCALER_INT_EN_ILLEGAL_SRC_CH_POS	(1 << 9)
+#define SCALER_INT_EN_ILLEGAL_SRC_YV_POS	(1 << 8)
+#define SCALER_INT_EN_ILLEGAL_SRC_YH_POS	(1 << 7)
+#define SCALER_INT_EN_ILLEGAL_DST_SPAN		(1 << 6)
+#define SCALER_INT_EN_ILLEGAL_SRC_Y_SPAN	(1 << 5)
+#define SCALER_INT_EN_ILLEGAL_SRC_CR_BASE	(1 << 4)
+#define SCALER_INT_EN_ILLEGAL_SRC_CB_BASE	(1 << 3)
+#define SCALER_INT_EN_ILLEGAL_SRC_Y_BASE	(1 << 2)
+#define SCALER_INT_EN_ILLEGAL_SRC_COLOR		(1 << 1)
+#define SCALER_INT_EN_FRAME_END			(1 << 0)
+
+/* SCALER_INT_STATUS */
+#define SCALER_INT_STATUS_TIMEOUT		(1 << 31)
+#define SCALER_INT_STATUS_ILLEGAL_BLEND		(1 << 24)
+#define SCALER_INT_STATUS_ILLEGAL_RATIO		(1 << 23)
+#define SCALER_INT_STATUS_ILLEGAL_DST_HEIGHT	(1 << 22)
+#define SCALER_INT_STATUS_ILLEGAL_DST_WIDTH	(1 << 21)
+#define SCALER_INT_STATUS_ILLEGAL_DST_V_POS	(1 << 20)
+#define SCALER_INT_STATUS_ILLEGAL_DST_H_POS	(1 << 19)
+#define SCALER_INT_STATUS_ILLEGAL_DST_C_SPAN	(1 << 18)
+#define SCALER_INT_STATUS_ILLEGAL_DST_Y_SPAN	(1 << 17)
+#define SCALER_INT_STATUS_ILLEGAL_DST_CR_BASE	(1 << 16)
+#define SCALER_INT_STATUS_ILLEGAL_DST_CB_BASE	(1 << 15)
+#define SCALER_INT_STATUS_ILLEGAL_DST_Y_BASE	(1 << 14)
+#define SCALER_INT_STATUS_ILLEGAL_DST_COLOR	(1 << 13)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_HEIGHT	(1 << 12)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_WIDTH	(1 << 11)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_CV_POS	(1 << 10)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_CH_POS	(1 << 9)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_YV_POS	(1 << 8)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_YH_POS	(1 << 7)
+#define SCALER_INT_STATUS_ILLEGAL_DST_SPAN	(1 << 6)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_Y_SPAN	(1 << 5)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_CR_BASE	(1 << 4)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_CB_BASE	(1 << 3)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_Y_BASE	(1 << 2)
+#define SCALER_INT_STATUS_ILLEGAL_SRC_COLOR	(1 << 1)
+#define SCALER_INT_STATUS_FRAME_END		(1 << 0)
+
+/* SCALER_SRC_CFG */
+#define SCALER_SRC_CFG_TILE_EN			(1 << 10)
+#define SCALER_SRC_CFG_GET_BYTE_SWAP(r)		SCALER_GET(r, 6, 5)
+#define SCALER_SRC_CFG_SET_BYTE_SWAP(v)		SCALER_SET(v, 6, 5)
+#define SCALER_SRC_CFG_GET_COLOR_FORMAT(r)	SCALER_GET(r, 4, 0)
+#define SCALER_SRC_CFG_SET_COLOR_FORMAT(v)	SCALER_SET(v, 4, 0)
+#define SCALER_YUV420_2P_UV			0
+#define SCALER_YUV422_2P_UV			2
+#define SCALER_YUV444_2P_UV			3
+#define SCALER_RGB_565				4
+#define SCALER_ARGB1555				5
+#define SCALER_ARGB8888				6
+#define SCALER_ARGB8888_PRE			7
+#define SCALER_YUV422_1P_YVYU			9
+#define SCALER_YUV422_1P_YUYV			10
+#define SCALER_YUV422_1P_UYVY			11
+#define SCALER_ARGB4444				12
+#define SCALER_L8A8				13
+#define SCALER_RGBA8888				14
+#define SCALER_L8				15
+#define SCALER_YUV420_2P_VU			16
+#define SCALER_YUV422_2P_VU			18
+#define SCALER_YUV444_2P_VU			19
+#define SCALER_YUV420_3P			20
+#define SCALER_YUV422_3P			22
+#define SCALER_YUV444_3P			23
+
+/* SCALER_SRC_SPAN */
+#define SCALER_SRC_SPAN_GET_C_SPAN(r)		SCALER_GET(r, 29, 16)
+#define SCALER_SRC_SPAN_SET_C_SPAN(v)		SCALER_SET(v, 29, 16)
+#define SCALER_SRC_SPAN_GET_Y_SPAN(r)		SCALER_GET(r, 13, 0)
+#define SCALER_SRC_SPAN_SET_Y_SPAN(v)		SCALER_SET(v, 13, 0)
+
+/* SCALER_SRC_Y_POS */
+#define SCALER_SRC_Y_POS_GET_YH_POS(r)		SCALER_GET(r, 31, 16)
+#define SCALER_SRC_Y_POS_SET_YH_POS(v)		SCALER_SET(v, 31, 16)
+#define SCALER_SRC_Y_POS_GET_YV_POS(r)		SCALER_GET(r, 15, 0)
+#define SCALER_SRC_Y_POS_SET_YV_POS(v)		SCALER_SET(v, 15, 0)
+
+/* SCALER_SRC_WH */
+#define SCALER_SRC_WH_GET_WIDTH(r)		SCALER_GET(r, 29, 16)
+#define SCALER_SRC_WH_SET_WIDTH(v)		SCALER_SET(v, 29, 16)
+#define SCALER_SRC_WH_GET_HEIGHT(r)		SCALER_GET(r, 13, 0)
+#define SCALER_SRC_WH_SET_HEIGHT(v)		SCALER_SET(v, 13, 0)
+
+/* SCALER_SRC_C_POS */
+#define SCALER_SRC_C_POS_GET_CH_POS(r)		SCALER_GET(r, 31, 16)
+#define SCALER_SRC_C_POS_SET_CH_POS(v)		SCALER_SET(v, 31, 16)
+#define SCALER_SRC_C_POS_GET_CV_POS(r)		SCALER_GET(r, 15, 0)
+#define SCALER_SRC_C_POS_SET_CV_POS(v)		SCALER_SET(v, 15, 0)
+
+/* SCALER_DST_CFG */
+#define SCALER_DST_CFG_GET_BYTE_SWAP(r)		SCALER_GET(r, 6, 5)
+#define SCALER_DST_CFG_SET_BYTE_SWAP(v)		SCALER_SET(v, 6, 5)
+#define SCALER_DST_CFG_GET_COLOR_FORMAT(r)	SCALER_GET(r, 4, 0)
+#define SCALER_DST_CFG_SET_COLOR_FORMAT(v)	SCALER_SET(v, 4, 0)
+
+/* SCALER_DST_SPAN */
+#define SCALER_DST_SPAN_GET_C_SPAN(r)		SCALER_GET(r, 29, 16)
+#define SCALER_DST_SPAN_SET_C_SPAN(v)		SCALER_SET(v, 29, 16)
+#define SCALER_DST_SPAN_GET_Y_SPAN(r)		SCALER_GET(r, 13, 0)
+#define SCALER_DST_SPAN_SET_Y_SPAN(v)		SCALER_SET(v, 13, 0)
+
+/* SCALER_DST_WH */
+#define SCALER_DST_WH_GET_WIDTH(r)		SCALER_GET(r, 29, 16)
+#define SCALER_DST_WH_SET_WIDTH(v)		SCALER_SET(v, 29, 16)
+#define SCALER_DST_WH_GET_HEIGHT(r)		SCALER_GET(r, 13, 0)
+#define SCALER_DST_WH_SET_HEIGHT(v)		SCALER_SET(v, 13, 0)
+
+/* SCALER_DST_POS */
+#define SCALER_DST_POS_GET_H_POS(r)		SCALER_GET(r, 29, 16)
+#define SCALER_DST_POS_SET_H_POS(v)		SCALER_SET(v, 29, 16)
+#define SCALER_DST_POS_GET_V_POS(r)		SCALER_GET(r, 13, 0)
+#define SCALER_DST_POS_SET_V_POS(v)		SCALER_SET(v, 13, 0)
+
+/* SCALER_H_RATIO */
+#define SCALER_H_RATIO_GET(r)			SCALER_GET(r, 18, 0)
+#define SCALER_H_RATIO_SET(v)			SCALER_SET(v, 18, 0)
+
+/* SCALER_V_RATIO */
+#define SCALER_V_RATIO_GET(r)			SCALER_GET(r, 18, 0)
+#define SCALER_V_RATIO_SET(v)			SCALER_SET(v, 18, 0)
+
+/* SCALER_ROT_CFG */
+#define SCALER_ROT_CFG_FLIP_X_EN		(1 << 3)
+#define SCALER_ROT_CFG_FLIP_Y_EN		(1 << 2)
+#define SCALER_ROT_CFG_GET_ROTMODE(r)		SCALER_GET(r, 1, 0)
+#define SCALER_ROT_CFG_SET_ROTMODE(v)		SCALER_SET(v, 1, 0)
+#define SCALER_ROT_MODE_90			1
+#define SCALER_ROT_MODE_180			2
+#define SCALER_ROT_MODE_270			3
+
+/* SCALER_HCOEF, SCALER_VCOEF */
+#define SCALER_COEF_SHIFT(i)			(16 * (1 - (i) % 2))
+#define SCALER_COEF_GET(r, i)			\
+				(((r) >> SCALER_COEF_SHIFT(i)) & 0x1ff)
+#define SCALER_COEF_SET(v, i)			\
+				(((v) & 0x1ff) << SCALER_COEF_SHIFT(i))
+
+/* SCALER_CSC_COEFxy */
+#define SCALER_CSC_COEF_GET(r)			SCALER_GET(r, 11, 0)
+#define SCALER_CSC_COEF_SET(v)			SCALER_SET(v, 11, 0)
+
+/* SCALER_DITH_CFG */
+#define SCALER_DITH_CFG_GET_R_TYPE(r)		SCALER_GET(r, 8, 6)
+#define SCALER_DITH_CFG_SET_R_TYPE(v)		SCALER_SET(v, 8, 6)
+#define SCALER_DITH_CFG_GET_G_TYPE(r)		SCALER_GET(r, 5, 3)
+#define SCALER_DITH_CFG_SET_G_TYPE(v)		SCALER_SET(v, 5, 3)
+#define SCALER_DITH_CFG_GET_B_TYPE(r)		SCALER_GET(r, 2, 0)
+#define SCALER_DITH_CFG_SET_B_TYPE(v)		SCALER_SET(v, 2, 0)
+
+/* SCALER_TIMEOUT_CTRL */
+#define SCALER_TIMEOUT_CTRL_GET_TIMER_VALUE(r)	SCALER_GET(r, 31, 16)
+#define SCALER_TIMEOUT_CTRL_SET_TIMER_VALUE(v)	SCALER_SET(v, 31, 16)
+#define SCALER_TIMEOUT_CTRL_GET_TIMER_DIV(r)	SCALER_GET(r, 7, 4)
+#define SCALER_TIMEOUT_CTRL_SET_TIMER_DIV(v)	SCALER_SET(v, 7, 4)
+#define SCALER_TIMEOUT_CTRL_TIMER_ENABLE	(1 << 0)
+
+/* SCALER_TIMEOUT_CNT */
+#define SCALER_TIMEOUT_CTRL_GET_TIMER_COUNT(r)	SCALER_GET(r, 31, 16)
+
+/* SCALER_SRC_BLEND_COLOR */
+#define SCALER_SRC_BLEND_COLOR_SEL_INV		(1 << 31)
+#define SCALER_SRC_BLEND_COLOR_GET_SEL(r)	SCALER_GET(r, 30, 29)
+#define SCALER_SRC_BLEND_COLOR_SET_SEL(v)	SCALER_SET(v, 30, 29)
+#define SCALER_SRC_BLEND_COLOR_OP_SEL_INV	(1 << 28)
+#define SCALER_SRC_BLEND_COLOR_GET_OP_SEL(r)	SCALER_GET(r, 27, 24)
+#define SCALER_SRC_BLEND_COLOR_SET_OP_SEL(v)	SCALER_SET(v, 27, 24)
+#define SCALER_SRC_BLEND_COLOR_GET_COLOR0(r)	SCALER_GET(r, 23, 16)
+#define SCALER_SRC_BLEND_COLOR_SET_COLOR0(v)	SCALER_SET(v, 23, 16)
+#define SCALER_SRC_BLEND_COLOR_GET_COLOR1(r)	SCALER_GET(r, 15, 8)
+#define SCALER_SRC_BLEND_COLOR_SET_COLOR1(v)	SCALER_SET(v, 15, 8)
+#define SCALER_SRC_BLEND_COLOR_GET_COLOR2(r)	SCALER_GET(r, 7, 0)
+#define SCALER_SRC_BLEND_COLOR_SET_COLOR2(v)	SCALER_SET(v, 7, 0)
+
+/* SCALER_SRC_BLEND_ALPHA */
+#define SCALER_SRC_BLEND_ALPHA_SEL_INV		(1 << 31)
+#define SCALER_SRC_BLEND_ALPHA_GET_SEL(r)	SCALER_GET(r, 30, 29)
+#define SCALER_SRC_BLEND_ALPHA_SET_SEL(v)	SCALER_SET(v, 30, 29)
+#define SCALER_SRC_BLEND_ALPHA_OP_SEL_INV	(1 << 28)
+#define SCALER_SRC_BLEND_ALPHA_GET_OP_SEL(r)	SCALER_GET(r, 27, 24)
+#define SCALER_SRC_BLEND_ALPHA_SET_OP_SEL(v)	SCALER_SET(v, 27, 24)
+#define SCALER_SRC_BLEND_ALPHA_GET_ALPHA(r)	SCALER_GET(r, 7, 0)
+#define SCALER_SRC_BLEND_ALPHA_SET_ALPHA(v)	SCALER_SET(v, 7, 0)
+
+/* SCALER_DST_BLEND_COLOR */
+#define SCALER_DST_BLEND_COLOR_SEL_INV		(1 << 31)
+#define SCALER_DST_BLEND_COLOR_GET_SEL(r)	SCALER_GET(r, 30, 29)
+#define SCALER_DST_BLEND_COLOR_SET_SEL(v)	SCALER_SET(v, 30, 29)
+#define SCALER_DST_BLEND_COLOR_OP_SEL_INV	(1 << 28)
+#define SCALER_DST_BLEND_COLOR_GET_OP_SEL(r)	SCALER_GET(r, 27, 24)
+#define SCALER_DST_BLEND_COLOR_SET_OP_SEL(v)	SCALER_SET(v, 27, 24)
+#define SCALER_DST_BLEND_COLOR_GET_COLOR0(r)	SCALER_GET(r, 23, 16)
+#define SCALER_DST_BLEND_COLOR_SET_COLOR0(v)	SCALER_SET(v, 23, 16)
+#define SCALER_DST_BLEND_COLOR_GET_COLOR1(r)	SCALER_GET(r, 15, 8)
+#define SCALER_DST_BLEND_COLOR_SET_COLOR1(v)	SCALER_SET(v, 15, 8)
+#define SCALER_DST_BLEND_COLOR_GET_COLOR2(r)	SCALER_GET(r, 7, 0)
+#define SCALER_DST_BLEND_COLOR_SET_COLOR2(v)	SCALER_SET(v, 7, 0)
+
+/* SCALER_DST_BLEND_ALPHA */
+#define SCALER_DST_BLEND_ALPHA_SEL_INV		(1 << 31)
+#define SCALER_DST_BLEND_ALPHA_GET_SEL(r)	SCALER_GET(r, 30, 29)
+#define SCALER_DST_BLEND_ALPHA_SET_SEL(v)	SCALER_SET(v, 30, 29)
+#define SCALER_DST_BLEND_ALPHA_OP_SEL_INV	(1 << 28)
+#define SCALER_DST_BLEND_ALPHA_GET_OP_SEL(r)	SCALER_GET(r, 27, 24)
+#define SCALER_DST_BLEND_ALPHA_SET_OP_SEL(v)	SCALER_SET(v, 27, 24)
+#define SCALER_DST_BLEND_ALPHA_GET_ALPHA(r)	SCALER_GET(r, 7, 0)
+#define SCALER_DST_BLEND_ALPHA_SET_ALPHA(v)	SCALER_SET(v, 7, 0)
+
+/* SCALER_FILL_COLOR */
+#define SCALER_FILL_COLOR_GET_ALPHA(r)		SCALER_GET(r, 31, 24)
+#define SCALER_FILL_COLOR_SET_ALPHA(v)		SCALER_SET(v, 31, 24)
+#define SCALER_FILL_COLOR_GET_FILL_COLOR0(r)	SCALER_GET(r, 23, 16)
+#define SCALER_FILL_COLOR_SET_FILL_COLOR0(v)	SCALER_SET(v, 23, 16)
+#define SCALER_FILL_COLOR_GET_FILL_COLOR1(r)	SCALER_GET(r, 15, 8)
+#define SCALER_FILL_COLOR_SET_FILL_COLOR1(v)	SCALER_SET(v, 15, 8)
+#define SCALER_FILL_COLOR_GET_FILL_COLOR2(r)	SCALER_GET(r, 7, 0)
+#define SCALER_FILL_COLOR_SET_FILL_COLOR2(v)	SCALER_SET(v, 7, 0)
+
+/* SCALER_ADDR_Q_CONFIG */
+#define SCALER_ADDR_Q_CONFIG_RST		(1 << 0)
+
+/* SCALER_SRC_ADDR_Q_STATUS */
+#define SCALER_SRC_ADDR_Q_STATUS_Y_FULL		(1 << 23)
+#define SCALER_SRC_ADDR_Q_STATUS_Y_EMPTY	(1 << 22)
+#define SCALER_SRC_ADDR_Q_STATUS_GET_Y_WR_IDX(r)	SCALER_GET(r, 21, 16)
+#define SCALER_SRC_ADDR_Q_STATUS_CB_FULL	(1 << 15)
+#define SCALER_SRC_ADDR_Q_STATUS_CB_EMPTY	(1 << 14)
+#define SCALER_SRC_ADDR_Q_STATUS_GET_CB_WR_IDX(r)	SCALER_GET(r, 13, 8)
+#define SCALER_SRC_ADDR_Q_STATUS_CR_FULL	(1 << 7)
+#define SCALER_SRC_ADDR_Q_STATUS_CR_EMPTY	(1 << 6)
+#define SCALER_SRC_ADDR_Q_STATUS_GET_CR_WR_IDX(r)	SCALER_GET(r, 5, 0)
+
+/* SCALER_DST_ADDR_Q_STATUS */
+#define SCALER_DST_ADDR_Q_STATUS_Y_FULL		(1 << 23)
+#define SCALER_DST_ADDR_Q_STATUS_Y_EMPTY	(1 << 22)
+#define SCALER_DST_ADDR_Q_STATUS_GET_Y_WR_IDX(r)	SCALER_GET(r, 21, 16)
+#define SCALER_DST_ADDR_Q_STATUS_CB_FULL	(1 << 15)
+#define SCALER_DST_ADDR_Q_STATUS_CB_EMPTY	(1 << 14)
+#define SCALER_DST_ADDR_Q_STATUS_GET_CB_WR_IDX(r)	SCALER_GET(r, 13, 8)
+#define SCALER_DST_ADDR_Q_STATUS_CR_FULL	(1 << 7)
+#define SCALER_DST_ADDR_Q_STATUS_CR_EMPTY	(1 << 6)
+#define SCALER_DST_ADDR_Q_STATUS_GET_CR_WR_IDX(r)	SCALER_GET(r, 5, 0)
+
+/* SCALER_CRC_COLOR00_10 */
+#define SCALER_CRC_COLOR00_10_GET_00(r)		SCALER_GET(r, 31, 16)
+#define SCALER_CRC_COLOR00_10_GET_10(r)		SCALER_GET(r, 15, 0)
+
+/* SCALER_CRC_COLOR20_30 */
+#define SCALER_CRC_COLOR20_30_GET_20(r)		SCALER_GET(r, 31, 16)
+#define SCALER_CRC_COLOR20_30_GET_30(r)		SCALER_GET(r, 15, 0)
+
+/* SCALER_CRC_COLOR01_11 */
+#define SCALER_CRC_COLOR01_11_GET_01(r)		SCALER_GET(r, 31, 16)
+#define SCALER_CRC_COLOR01_11_GET_11(r)		SCALER_GET(r, 15, 0)
+
+/* SCALER_CRC_COLOR21_31 */
+#define SCALER_CRC_COLOR21_31_GET_21(r)		SCALER_GET(r, 31, 16)
+#define SCALER_CRC_COLOR21_31_GET_31(r)		SCALER_GET(r, 15, 0)
+
+#endif /* EXYNOS_REGS_SCALER_H */
-- 
2.14.2