RE: [RFC v2 3/5] drm/exynos: add fimc ipp driver

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> -----Original Message-----
> From: Eunchul Kim [mailto:chulspro.kim@xxxxxxxxxxx]
> Sent: Monday, December 10, 2012 10:46 PM
> To: dri-devel@xxxxxxxxxxxxxxxxxxxxx; inki.dae@xxxxxxxxxxx
> Cc: jy0.jeon@xxxxxxxxxxx; yj44.cho@xxxxxxxxxxx; jmock.shin@xxxxxxxxxxx;
> jaejoon.seo@xxxxxxxxxxx; kyungmin.park@xxxxxxxxxxx;
> chulspro.kim@xxxxxxxxxxx
> Subject: [RFC v2 3/5] drm/exynos: add fimc ipp driver
> 
> FIMC is stand for Fully Interfactive Mobile Camera and
> supports image scaler/rotator/crop/flip/csc and input/output DMA
> operations.
> input DMA reads image data from the memory.
> output DMA writes image data to memory.
> FIMC supports image rotation and image effect functions.
> also supports writeback and display output operations.
> 
> Signed-off-by: Eunchul Kim <chulspro.kim@xxxxxxxxxxx>
> Signed-off-by: Jinyoung Jeon <jy0.jeon@xxxxxxxxxxx>
> ---
>  drivers/gpu/drm/exynos/Kconfig           |    6 +
>  drivers/gpu/drm/exynos/Makefile          |    1 +
>  drivers/gpu/drm/exynos/exynos_drm_drv.c  |   15 +
>  drivers/gpu/drm/exynos/exynos_drm_drv.h  |    1 +
>  drivers/gpu/drm/exynos/exynos_drm_fimc.c | 2041
> ++++++++++++++++++++++++++++++
>  drivers/gpu/drm/exynos/exynos_drm_fimc.h |   35 +
>  drivers/gpu/drm/exynos/regs-fimc.h       |  669 ++++++++++
>  include/drm/exynos_drm.h                 |   34 +
>  8 files changed, 2802 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/gpu/drm/exynos/exynos_drm_fimc.c
>  create mode 100644 drivers/gpu/drm/exynos/exynos_drm_fimc.h
>  create mode 100644 drivers/gpu/drm/exynos/regs-fimc.h
> 
> diff --git a/drivers/gpu/drm/exynos/Kconfig
> b/drivers/gpu/drm/exynos/Kconfig
> index bcf1c9d..4915ab6 100644
> --- a/drivers/gpu/drm/exynos/Kconfig
> +++ b/drivers/gpu/drm/exynos/Kconfig
> @@ -51,3 +51,9 @@ config DRM_EXYNOS_IPP
>  	depends on DRM_EXYNOS
>  	help
>  	  Choose this option if you want to use IPP feature for DRM.
> +
> +config DRM_EXYNOS_FIMC
> +	bool "Exynos DRM FIMC"
> +	depends on DRM_EXYNOS_IPP
> +	help
> +	  Choose this option if you want to use Exynos FIMC for DRM.
> diff --git a/drivers/gpu/drm/exynos/Makefile
> b/drivers/gpu/drm/exynos/Makefile
> index 6c536ce..9710024 100644
> --- a/drivers/gpu/drm/exynos/Makefile
> +++ b/drivers/gpu/drm/exynos/Makefile
> @@ -17,5 +17,6 @@ exynosdrm-$(CONFIG_DRM_EXYNOS_HDMI)	+=
> exynos_hdmi.o exynos_mixer.o \
>  exynosdrm-$(CONFIG_DRM_EXYNOS_VIDI)	+= exynos_drm_vidi.o
>  exynosdrm-$(CONFIG_DRM_EXYNOS_G2D)	+= exynos_drm_g2d.o
>  exynosdrm-$(CONFIG_DRM_EXYNOS_IPP)	+= exynos_drm_ipp.o
> +exynosdrm-$(CONFIG_DRM_EXYNOS_FIMC)	+= exynos_drm_fimc.o
> 
>  obj-$(CONFIG_DRM_EXYNOS)		+= exynosdrm.o
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c
> b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> index 0eb8a97..73f02ac 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> @@ -372,6 +372,12 @@ static int __init exynos_drm_init(void)
>  		goto out_g2d;
>  #endif
> 
> +#ifdef CONFIG_DRM_EXYNOS_FIMC
> +	ret = platform_driver_register(&fimc_driver);
> +	if (ret < 0)
> +		goto out_fimc;
> +#endif
> +
>  #ifdef CONFIG_DRM_EXYNOS_IPP
>  	ret = platform_driver_register(&ipp_driver);
>  	if (ret < 0)
> @@ -400,6 +406,11 @@ out_drm:
>  out_ipp:
>  #endif
> 
> +#ifdef CONFIG_DRM_EXYNOS_FIMC
> +	platform_driver_unregister(&fimc_driver);
> +out_fimc:
> +#endif
> +
>  #ifdef CONFIG_DRM_EXYNOS_G2D
>  	platform_driver_unregister(&g2d_driver);
>  out_g2d:
> @@ -440,6 +451,10 @@ static void __exit exynos_drm_exit(void)
>  	platform_driver_unregister(&ipp_driver);
>  #endif
> 
> +#ifdef CONFIG_DRM_EXYNOS_FIMC
> +	platform_driver_unregister(&fimc_driver);
> +#endif
> +
>  #ifdef CONFIG_DRM_EXYNOS_G2D
>  	platform_driver_unregister(&g2d_driver);
>  #endif
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h
> b/drivers/gpu/drm/exynos/exynos_drm_drv.h
> index a365788..14f9490 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
> @@ -352,5 +352,6 @@ extern struct platform_driver mixer_driver;
>  extern struct platform_driver exynos_drm_common_hdmi_driver;
>  extern struct platform_driver vidi_driver;
>  extern struct platform_driver g2d_driver;
> +extern struct platform_driver fimc_driver;
>  extern struct platform_driver ipp_driver;
>  #endif
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c
> b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
> new file mode 100644
> index 0000000..3adb452
> --- /dev/null
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
> @@ -0,0 +1,2041 @@
> +/*
> + * Copyright (C) 2012 Samsung Electronics Co.Ltd
> + * Authors:
> + *	Eunchul Kim <chulspro.kim@xxxxxxxxxxx>
> + *	Jinyoung Jeon <jy0.jeon@xxxxxxxxxxx>
> + *	Sangmin Lee <lsmin.lee@xxxxxxxxxxx>
> + *
> + * This program is free software; you can redistribute  it and/or modify
> it
> + * under  the terms of  the GNU General  Public License as published by
> the
> + * Free Software Foundation;  either version 2 of the  License, or (at
> your
> + * option) any later version.
> + *
> + */
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +#include <linux/pm_runtime.h>
> +#include <plat/map-base.h>
> +
> +#include <drm/drmP.h>
> +#include <drm/exynos_drm.h>
> +#include "regs-fimc.h"
> +#include "exynos_drm_drv.h"
> +#include "exynos_drm_gem.h"
> +#include "exynos_drm_ipp.h"
> +#include "exynos_drm_fimc.h"
> +
> +/*
> + * FIMC is stand for Fully Interactive Mobile Camera and
> + * supports image scaler/rotator and input/output DMA operations.
> + * input DMA reads image data from the memory.
> + * output DMA writes image data to memory.
> + * FIMC supports image rotation and image effect functions.
> + */
> +
> +#define FIMC_MAX_DEVS	4
> +#define FIMC_MAX_SRC	2
> +#define FIMC_MAX_DST	32
> +#define FIMC_CLK_RATE		166750000
> +#define FIMC_CLK_RATE_R2		180000000

FIMC should use fixed clock rate? I think clock rate and source or parent
clocks should be decided by machine code.

> +#define FIMC_BUF_STOP	1
> +#define FIMC_BUF_START	2
> +#define FIMC_REG_SZ		32
> +#define FIMC_WIDTH_ITU_709	1280
> +
> +#define get_fimc_context(dev)
> 	platform_get_drvdata(to_platform_device(dev))
> +#define get_ctx_from_ippdrv(ippdrv)	container_of(ippdrv,\
> +					struct fimc_context, ippdrv);
> +#define fimc_read(offset)		readl(ctx->regs + (offset));
> +#define fimc_write(cfg, offset)	writel(cfg, ctx->regs + (offset));
> +
> +enum fimc_wb {
> +	FIMC_WB_NONE,
> +	FIMC_WB_A,
> +	FIMC_WB_B,
> +};
> +
> +/*
> + * A structure of scaler.
> + *
> + * @range: narrow, wide.
> + * @bypass: unused scaler path.
> + * @up_h: horizontal scale up.
> + * @up_v: vertical scale up.
> + * @hratio: horizontal ratio.
> + * @vratio: vertical ratio.
> + */
> +struct fimc_scaler {
> +	bool	range;
> +	bool bypass;
> +	bool up_h;
> +	bool up_v;
> +	u32 hratio;
> +	u32 vratio;
> +};
> +
> +/*
> + * A structure of scaler capability.
> + *
> + * find user manual table 43-1.
> + * @in_hori: scaler input horizontal size.
> + * @bypass: scaler bypass mode.
> + * @dst_h_wo_rot: target horizontal size without output rotation.
> + * @dst_h_rot: target horizontal size with output rotation.
> + * @rl_w_wo_rot: real width without input rotation.
> + * @rl_h_rot: real height without output rotation.
> + */
> +struct fimc_capability {
> +	/* scaler */
> +	u32	in_hori;
> +	u32	bypass;
> +	/* output rotator */
> +	u32	dst_h_wo_rot;
> +	u32	dst_h_rot;
> +	/* input rotator */
> +	u32	rl_w_wo_rot;
> +	u32	rl_h_rot;
> +};
> +
> +/*
> + * A structure of fimc context.
> + *
> + * @ippdrv: prepare initialization using ippdrv.
> + * @regs_res: register resources.
> + * @regs: memory mapped io registers.
> + * @lock: locking of operations.
> + * @sclk_fimc_clk: fimc source clock.
> + * @fimc_clk: fimc clock.
> + * @wb_clk: writeback a clock.
> + * @wb_b_clk: writeback b clock.
> + * @sc: scaler infomations.
> + * @capa: scaler capability.
> + * @odr: ordering of YUV.
> + * @ver: fimc version.
> + * @pol: porarity of writeback.
> + * @id: fimc id.
> + * @irq: irq number.
> + * @suspended: qos operations.
> + */
> +struct fimc_context {
> +	struct exynos_drm_ippdrv	ippdrv;
> +	struct resource	*regs_res;
> +	void __iomem	*regs;
> +	spinlock_t	lock;
> +	struct clk	*sclk_fimc_clk;
> +	struct clk	*fimc_clk;
> +	struct clk	*wb_clk;
> +	struct clk	*wb_b_clk;
> +	struct fimc_scaler	sc;
> +	struct fimc_capability	*capa;
> +	enum exynos_drm_fimc_ver	ver;
> +	struct exynos_drm_fimc_pol	pol;
> +	int	id;
> +	int	irq;
> +	bool	suspended;
> +};
> +
> +struct fimc_capability fimc51_capa[FIMC_MAX_DEVS] = {
> +	{
> +		.in_hori = 4224,
> +		.bypass = 8192,
> +		.dst_h_wo_rot = 4224,
> +		.dst_h_rot = 1920,
> +		.rl_w_wo_rot = 8192,
> +		.rl_h_rot = 1920,
> +	}, {
> +		.in_hori = 4224,
> +		.bypass = 8192,
> +		.dst_h_wo_rot = 4224,
> +		.dst_h_rot = 1920,
> +		.rl_w_wo_rot = 8192,
> +		.rl_h_rot = 1920,
> +	}, {
> +		.in_hori = 4224,
> +		.bypass = 8192,
> +		.dst_h_wo_rot = 4224,
> +		.dst_h_rot = 1920,
> +		.rl_w_wo_rot = 8192,
> +		.rl_h_rot = 1920,
> +	}, {
> +		.in_hori = 1920,
> +		.bypass = 8192,
> +		.dst_h_wo_rot = 1920,
> +		.dst_h_rot = 1366,
> +		.rl_w_wo_rot = 8192,
> +		.rl_h_rot = 1366,
> +	},
> +};
> +
> +static void fimc_sw_reset(struct fimc_context *ctx, bool pattern)
> +{
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:pattern[%d]\n", __func__, pattern);
> +
> +	cfg = fimc_read(EXYNOS_CISRCFMT);
> +	cfg |= EXYNOS_CISRCFMT_ITU601_8BIT;
> +	if (pattern)
> +		cfg |= EXYNOS_CIGCTRL_TESTPATTERN_COLOR_BAR;
> +
> +	fimc_write(cfg, EXYNOS_CISRCFMT);
> +
> +	/* s/w reset */
> +	cfg = fimc_read(EXYNOS_CIGCTRL);
> +	cfg |= (EXYNOS_CIGCTRL_SWRST);
> +	fimc_write(cfg, EXYNOS_CIGCTRL);
> +
> +	/* s/w reset complete */
> +	cfg = fimc_read(EXYNOS_CIGCTRL);
> +	cfg &= ~EXYNOS_CIGCTRL_SWRST;
> +	fimc_write(cfg, EXYNOS_CIGCTRL);
> +
> +	/* reset sequence */
> +	fimc_write(0x0, EXYNOS_CIFCNTSEQ);
> +}
> +
> +static void fimc_set_camblk_fimd0_wb(struct fimc_context *ctx)
> +{
> +	u32 camblk_cfg;
> +
> +	DRM_DEBUG_KMS("%s\n", __func__);
> +
> +	camblk_cfg = readl(SYSREG_CAMERA_BLK);
> +	camblk_cfg &= ~(SYSREG_FIMD0WB_DEST_MASK);
> +	camblk_cfg |= ctx->id << (SYSREG_FIMD0WB_DEST_SHIFT);
> +
> +	writel(camblk_cfg, SYSREG_CAMERA_BLK);
> +}
> +
> +static void fimc_set_type_ctrl(struct fimc_context *ctx, enum fimc_wb wb)
> +{
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:wb[%d]\n", __func__, wb);
> +
> +	cfg = fimc_read(EXYNOS_CIGCTRL);
> +	cfg &= ~(EXYNOS_CIGCTRL_TESTPATTERN_MASK |
> +		EXYNOS_CIGCTRL_SELCAM_ITU_MASK |
> +		EXYNOS_CIGCTRL_SELCAM_MIPI_MASK |
> +		EXYNOS_CIGCTRL_SELCAM_FIMC_MASK |
> +		EXYNOS_CIGCTRL_SELWB_CAMIF_MASK |
> +		EXYNOS_CIGCTRL_SELWRITEBACK_MASK);
> +
> +	switch (wb) {
> +	case FIMC_WB_A:
> +		cfg |= (EXYNOS_CIGCTRL_SELWRITEBACK_A |
> +			EXYNOS_CIGCTRL_SELWB_CAMIF_WRITEBACK);
> +		break;
> +	case FIMC_WB_B:
> +		cfg |= (EXYNOS_CIGCTRL_SELWRITEBACK_B |
> +			EXYNOS_CIGCTRL_SELWB_CAMIF_WRITEBACK);
> +		break;
> +	case FIMC_WB_NONE:
> +	default:
> +		cfg |= (EXYNOS_CIGCTRL_SELCAM_ITU_A |
> +			EXYNOS_CIGCTRL_SELWRITEBACK_A |
> +			EXYNOS_CIGCTRL_SELCAM_MIPI_A |
> +			EXYNOS_CIGCTRL_SELCAM_FIMC_ITU);
> +		break;
> +	}
> +
> +	fimc_write(cfg, EXYNOS_CIGCTRL);
> +}
> +
> +static void fimc_set_polarity(struct fimc_context *ctx,
> +	struct exynos_drm_fimc_pol *pol)
> +{
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:inv_pclk[%d]inv_vsync[%d]\n",
> +		__func__, pol->inv_pclk, pol->inv_vsync);
> +	DRM_DEBUG_KMS("%s:inv_href[%d]inv_hsync[%d]\n",
> +		__func__, pol->inv_href, pol->inv_hsync);
> +
> +	cfg = fimc_read(EXYNOS_CIGCTRL);
> +	cfg &= ~(EXYNOS_CIGCTRL_INVPOLPCLK | EXYNOS_CIGCTRL_INVPOLVSYNC |
> +		 EXYNOS_CIGCTRL_INVPOLHREF | EXYNOS_CIGCTRL_INVPOLHSYNC);
> +
> +	if (pol->inv_pclk)
> +		cfg |= EXYNOS_CIGCTRL_INVPOLPCLK;
> +	if (pol->inv_vsync)
> +		cfg |= EXYNOS_CIGCTRL_INVPOLVSYNC;
> +	if (pol->inv_href)
> +		cfg |= EXYNOS_CIGCTRL_INVPOLHREF;
> +	if (pol->inv_hsync)
> +		cfg |= EXYNOS_CIGCTRL_INVPOLHSYNC;
> +
> +	fimc_write(cfg, EXYNOS_CIGCTRL);
> +}
> +
> +static void fimc_handle_jpeg(struct fimc_context *ctx, bool enable)
> +{
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:enable[%d]\n", __func__, enable);
> +
> +	cfg = fimc_read(EXYNOS_CIGCTRL);
> +	if (enable)
> +		cfg |= EXYNOS_CIGCTRL_CAM_JPEG;
> +	else
> +		cfg &= ~EXYNOS_CIGCTRL_CAM_JPEG;
> +
> +	fimc_write(cfg, EXYNOS_CIGCTRL);
> +}
> +
> +static void fimc_handle_irq(struct fimc_context *ctx, bool enable,
> +	bool overflow, bool level)
> +{
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:enable[%d]overflow[%d]level[%d]\n", __func__,
> +			enable, overflow, level);
> +
> +	cfg = fimc_read(EXYNOS_CIGCTRL);
> +	if (enable) {
> +		cfg &= ~(EXYNOS_CIGCTRL_IRQ_OVFEN |
> EXYNOS_CIGCTRL_IRQ_LEVEL);
> +		cfg |= EXYNOS_CIGCTRL_IRQ_ENABLE;
> +		if (overflow)
> +			cfg |= EXYNOS_CIGCTRL_IRQ_OVFEN;
> +		if (level)
> +			cfg |= EXYNOS_CIGCTRL_IRQ_LEVEL;
> +	} else
> +		cfg &= ~(EXYNOS_CIGCTRL_IRQ_OVFEN |
> EXYNOS_CIGCTRL_IRQ_ENABLE);
> +
> +	fimc_write(cfg, EXYNOS_CIGCTRL);
> +}
> +
> +static void fimc_clear_irq(struct fimc_context *ctx)
> +{
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s\n", __func__);
> +
> +	cfg = fimc_read(EXYNOS_CIGCTRL);
> +	cfg |= EXYNOS_CIGCTRL_IRQ_CLR;
> +	fimc_write(cfg, EXYNOS_CIGCTRL);
> +}
> +
> +static bool fimc_check_ovf(struct fimc_context *ctx)
> +{
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	u32 cfg, status, flag;
> +
> +	status = fimc_read(EXYNOS_CISTATUS);
> +	flag = EXYNOS_CISTATUS_OVFIY | EXYNOS_CISTATUS_OVFICB |
> +		EXYNOS_CISTATUS_OVFICR;
> +
> +	DRM_DEBUG_KMS("%s:flag[0x%x]\n", __func__, flag);
> +
> +	if (status & flag) {
> +		cfg = fimc_read(EXYNOS_CIWDOFST);
> +		cfg |= (EXYNOS_CIWDOFST_CLROVFIY | EXYNOS_CIWDOFST_CLROVFICB
> |
> +			EXYNOS_CIWDOFST_CLROVFICR);
> +
> +		fimc_write(cfg, EXYNOS_CIWDOFST);
> +
> +		cfg = fimc_read(EXYNOS_CIWDOFST);
> +		cfg &= ~(EXYNOS_CIWDOFST_CLROVFIY |
> EXYNOS_CIWDOFST_CLROVFICB |
> +			EXYNOS_CIWDOFST_CLROVFICR);
> +
> +		fimc_write(cfg, EXYNOS_CIWDOFST);
> +
> +		dev_err(ippdrv->dev, "occured overflow at %d, status
> 0x%x.\n",
> +			ctx->id, status);
> +		return true;
> +	}
> +
> +	return false;
> +}
> +
> +static bool fimc_check_frame_end(struct fimc_context *ctx)
> +{
> +	u32 cfg;
> +
> +	cfg = fimc_read(EXYNOS_CISTATUS);
> +
> +	DRM_DEBUG_KMS("%s:cfg[0x%x]\n", __func__, cfg);
> +
> +	if (!(cfg & EXYNOS_CISTATUS_FRAMEEND))
> +		return false;
> +
> +	cfg &= ~(EXYNOS_CISTATUS_FRAMEEND);
> +	fimc_write(cfg, EXYNOS_CISTATUS);
> +
> +	return true;
> +}
> +
> +static int fimc_get_buf_id(struct fimc_context *ctx)
> +{
> +	u32 cfg;
> +	int frame_cnt, buf_id;
> +
> +	DRM_DEBUG_KMS("%s\n", __func__);
> +
> +	cfg = fimc_read(EXYNOS_CISTATUS2);
> +	frame_cnt = EXYNOS_CISTATUS2_GET_FRAMECOUNT_BEFORE(cfg);
> +
> +	if (frame_cnt == 0)
> +		frame_cnt = EXYNOS_CISTATUS2_GET_FRAMECOUNT_PRESENT(cfg);
> +
> +	DRM_DEBUG_KMS("%s:present[%d]before[%d]\n", __func__,
> +		EXYNOS_CISTATUS2_GET_FRAMECOUNT_PRESENT(cfg),
> +		EXYNOS_CISTATUS2_GET_FRAMECOUNT_BEFORE(cfg));
> +
> +	if (frame_cnt == 0) {
> +		DRM_ERROR("failed to get frame count.\n");
> +		return -EIO;
> +	}
> +
> +	buf_id = frame_cnt - 1;
> +	DRM_DEBUG_KMS("%s:buf_id[%d]\n", __func__, buf_id);
> +
> +	return buf_id;
> +}
> +
> +static void fimc_handle_lastend(struct fimc_context *ctx, bool enable)
> +{
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:enable[%d]\n", __func__, enable);
> +
> +	cfg = fimc_read(EXYNOS_CIOCTRL);
> +	if (enable)
> +		cfg |= EXYNOS_CIOCTRL_LASTENDEN;
> +	else
> +		cfg &= ~EXYNOS_CIOCTRL_LASTENDEN;
> +
> +	fimc_write(cfg, EXYNOS_CIOCTRL);
> +}
> +
> +
> +static int fimc_src_set_fmt_order(struct fimc_context *ctx, u32 fmt)
> +{
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:fmt[0x%x]\n", __func__, fmt);
> +
> +	/* RGB */
> +	cfg = fimc_read(EXYNOS_CISCCTRL);
> +	cfg &= ~EXYNOS_CISCCTRL_INRGB_FMT_RGB_MASK;
> +
> +	switch (fmt) {
> +	case DRM_FORMAT_RGB565:
> +		cfg |= EXYNOS_CISCCTRL_INRGB_FMT_RGB565;
> +		fimc_write(cfg, EXYNOS_CISCCTRL);
> +		return 0;
> +	case DRM_FORMAT_RGB888:
> +	case DRM_FORMAT_XRGB8888:
> +		cfg |= EXYNOS_CISCCTRL_INRGB_FMT_RGB888;
> +		fimc_write(cfg, EXYNOS_CISCCTRL);
> +		return 0;
> +	default:
> +		/* bypass */
> +		break;
> +	}
> +
> +	/* YUV */
> +	cfg = fimc_read(EXYNOS_MSCTRL);
> +	cfg &= ~(EXYNOS_MSCTRL_ORDER2P_SHIFT_MASK |
> +		EXYNOS_MSCTRL_C_INT_IN_2PLANE |
> +		EXYNOS_MSCTRL_ORDER422_YCBYCR);
> +
> +	switch (fmt) {
> +	case DRM_FORMAT_YUYV:
> +		cfg |= EXYNOS_MSCTRL_ORDER422_YCBYCR;
> +		break;
> +	case DRM_FORMAT_YVYU:
> +		cfg |= EXYNOS_MSCTRL_ORDER422_YCRYCB;
> +		break;
> +	case DRM_FORMAT_UYVY:
> +		cfg |= EXYNOS_MSCTRL_ORDER422_CBYCRY;
> +		break;
> +	case DRM_FORMAT_VYUY:
> +	case DRM_FORMAT_YUV444:
> +		cfg |= EXYNOS_MSCTRL_ORDER422_CRYCBY;
> +		break;
> +	case DRM_FORMAT_NV21:
> +	case DRM_FORMAT_NV61:
> +		cfg |= (EXYNOS_MSCTRL_ORDER2P_LSB_CRCB |
> +			EXYNOS_MSCTRL_C_INT_IN_2PLANE);
> +		break;
> +	case DRM_FORMAT_YUV422:
> +	case DRM_FORMAT_YUV420:
> +	case DRM_FORMAT_YVU420:
> +		cfg |= EXYNOS_MSCTRL_C_INT_IN_3PLANE;
> +		break;
> +	case DRM_FORMAT_NV12:
> +	case DRM_FORMAT_NV12MT:
> +	case DRM_FORMAT_NV16:
> +		cfg |= (EXYNOS_MSCTRL_ORDER2P_LSB_CBCR |
> +			EXYNOS_MSCTRL_C_INT_IN_2PLANE);
> +		break;
> +	default:
> +		dev_err(ippdrv->dev, "inavlid source yuv order 0x%x.\n",
> fmt);
> +		return -EINVAL;
> +	}
> +
> +	fimc_write(cfg, EXYNOS_MSCTRL);
> +
> +	return 0;
> +}
> +
> +static int fimc_src_set_fmt(struct device *dev, u32 fmt)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:fmt[0x%x]\n", __func__, fmt);
> +
> +	cfg = fimc_read(EXYNOS_MSCTRL);
> +	cfg &= ~EXYNOS_MSCTRL_INFORMAT_RGB;
> +
> +	switch (fmt) {
> +	case DRM_FORMAT_RGB565:
> +	case DRM_FORMAT_RGB888:
> +	case DRM_FORMAT_XRGB8888:
> +		cfg |= EXYNOS_MSCTRL_INFORMAT_RGB;
> +		break;
> +	case DRM_FORMAT_YUV444:
> +		cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR420;
> +		break;
> +	case DRM_FORMAT_YUYV:
> +	case DRM_FORMAT_YVYU:
> +	case DRM_FORMAT_UYVY:
> +	case DRM_FORMAT_VYUY:
> +		cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR422_1PLANE;
> +		break;
> +	case DRM_FORMAT_NV16:
> +	case DRM_FORMAT_NV61:
> +	case DRM_FORMAT_YUV422:
> +		cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR422;
> +		break;
> +	case DRM_FORMAT_YUV420:
> +	case DRM_FORMAT_YVU420:
> +	case DRM_FORMAT_NV12:
> +	case DRM_FORMAT_NV21:
> +	case DRM_FORMAT_NV12MT:
> +		cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR420;
> +		break;
> +	default:
> +		dev_err(ippdrv->dev, "inavlid source format 0x%x.\n", fmt);
> +		return -EINVAL;
> +	}
> +
> +	fimc_write(cfg, EXYNOS_MSCTRL);
> +
> +	cfg = fimc_read(EXYNOS_CIDMAPARAM);
> +	cfg &= ~EXYNOS_CIDMAPARAM_R_MODE_MASK;
> +
> +	if (fmt == DRM_FORMAT_NV12MT)
> +		cfg |= EXYNOS_CIDMAPARAM_R_MODE_64X32;
> +	else
> +		cfg |= EXYNOS_CIDMAPARAM_R_MODE_LINEAR;
> +
> +	fimc_write(cfg, EXYNOS_CIDMAPARAM);
> +
> +	return fimc_src_set_fmt_order(ctx, fmt);
> +}
> +
> +static int fimc_src_set_transf(struct device *dev,
> +		enum drm_exynos_degree degree,
> +		enum drm_exynos_flip flip)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	u32 cfg1, cfg2;
> +
> +	DRM_DEBUG_KMS("%s:degree[%d]flip[0x%x]\n", __func__,
> +		degree, flip);
> +
> +	cfg1 = fimc_read(EXYNOS_MSCTRL);
> +	cfg1 &= ~(EXYNOS_MSCTRL_FLIP_X_MIRROR |
> +		EXYNOS_MSCTRL_FLIP_Y_MIRROR);
> +
> +	cfg2 = fimc_read(EXYNOS_CITRGFMT);
> +	cfg2 &= ~EXYNOS_CITRGFMT_INROT90_CLOCKWISE;
> +
> +	switch (degree) {
> +	case EXYNOS_DRM_DEGREE_0:
> +		if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> +			cfg1 |= EXYNOS_MSCTRL_FLIP_X_MIRROR;
> +		if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> +			cfg1 |= EXYNOS_MSCTRL_FLIP_Y_MIRROR;
> +		break;
> +	case EXYNOS_DRM_DEGREE_90:
> +		cfg2 |= EXYNOS_CITRGFMT_INROT90_CLOCKWISE;
> +		if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> +			cfg1 |= EXYNOS_MSCTRL_FLIP_X_MIRROR;
> +		if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> +			cfg1 |= EXYNOS_MSCTRL_FLIP_Y_MIRROR;
> +		break;
> +	case EXYNOS_DRM_DEGREE_180:
> +		cfg1 |= (EXYNOS_MSCTRL_FLIP_X_MIRROR |
> +			EXYNOS_MSCTRL_FLIP_Y_MIRROR);
> +		if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> +			cfg1 &= ~EXYNOS_MSCTRL_FLIP_X_MIRROR;
> +		if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> +			cfg1 &= ~EXYNOS_MSCTRL_FLIP_Y_MIRROR;
> +		break;
> +	case EXYNOS_DRM_DEGREE_270:
> +		cfg1 |= (EXYNOS_MSCTRL_FLIP_X_MIRROR |
> +			EXYNOS_MSCTRL_FLIP_Y_MIRROR);
> +		cfg2 |= EXYNOS_CITRGFMT_INROT90_CLOCKWISE;
> +		if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> +			cfg1 &= ~EXYNOS_MSCTRL_FLIP_X_MIRROR;
> +		if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> +			cfg1 &= ~EXYNOS_MSCTRL_FLIP_Y_MIRROR;
> +		break;
> +	default:
> +		dev_err(ippdrv->dev, "inavlid degree value %d.\n", degree);
> +		return -EINVAL;
> +	}
> +
> +	fimc_write(cfg1, EXYNOS_MSCTRL);
> +	fimc_write(cfg2, EXYNOS_CITRGFMT);
> +
> +	return (cfg2 & EXYNOS_CITRGFMT_INROT90_CLOCKWISE) ? 1 : 0;
> +}
> +
> +static int fimc_set_window(struct fimc_context *ctx,
> +	struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
> +{
> +	u32 cfg, h1, h2, v1, v2;
> +
> +	/* cropped image */
> +	h1 = pos->x;
> +	h2 = sz->hsize - pos->w - pos->x;
> +	v1 = pos->y;
> +	v2 = sz->vsize - pos->h - pos->y;
> +
> +	DRM_DEBUG_KMS("%s:x[%d]y[%d]w[%d]h[%d]hsize[%d]vsize[%d]\n",
> +	__func__, pos->x, pos->y, pos->w, pos->h, sz->hsize, sz->vsize);
> +	DRM_DEBUG_KMS("%s:h1[%d]h2[%d]v1[%d]v2[%d]\n", __func__,
> +		h1, h2, v1, v2);
> +
> +	/*
> +	 * set window offset 1, 2 size
> +	 * check figure 43-21 in user manual
> +	 */
> +	cfg = fimc_read(EXYNOS_CIWDOFST);
> +	cfg &= ~(EXYNOS_CIWDOFST_WINHOROFST_MASK |
> +		EXYNOS_CIWDOFST_WINVEROFST_MASK);
> +	cfg |= (EXYNOS_CIWDOFST_WINHOROFST(h1) |
> +		EXYNOS_CIWDOFST_WINVEROFST(v1));
> +	cfg |= EXYNOS_CIWDOFST_WINOFSEN;
> +	fimc_write(cfg, EXYNOS_CIWDOFST);
> +
> +	cfg = (EXYNOS_CIWDOFST2_WINHOROFST2(h2) |
> +		EXYNOS_CIWDOFST2_WINVEROFST2(v2));
> +	fimc_write(cfg, EXYNOS_CIWDOFST2);
> +
> +	return 0;
> +}
> +
> +static int fimc_src_set_size(struct device *dev, int swap,
> +	struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct drm_exynos_pos img_pos = *pos;
> +	struct drm_exynos_sz img_sz = *sz;
> +	u32 cfg;
> +
> +	/* ToDo: check width and height */
> +
> +	DRM_DEBUG_KMS("%s:swap[%d]hsize[%d]vsize[%d]\n",
> +		__func__, swap, sz->hsize, sz->vsize);
> +
> +	/* original size */
> +	cfg = (EXYNOS_ORGISIZE_HORIZONTAL(img_sz.hsize) |
> +		EXYNOS_ORGISIZE_VERTICAL(img_sz.vsize));
> +
> +	fimc_write(cfg, EXYNOS_ORGISIZE);
> +
> +	DRM_DEBUG_KMS("%s:x[%d]y[%d]w[%d]h[%d]\n", __func__,
> +		pos->x, pos->y, pos->w, pos->h);
> +
> +	if (swap) {
> +		img_pos.w = pos->h;
> +		img_pos.h = pos->w;
> +		img_sz.hsize = sz->vsize;
> +		img_sz.vsize = sz->hsize;
> +	}
> +
> +	/* set input DMA image size */
> +	cfg = fimc_read(EXYNOS_CIREAL_ISIZE);
> +	cfg &= ~(EXYNOS_CIREAL_ISIZE_HEIGHT_MASK |
> +		EXYNOS_CIREAL_ISIZE_WIDTH_MASK);
> +	cfg |= (EXYNOS_CIREAL_ISIZE_WIDTH(img_pos.w) |
> +		EXYNOS_CIREAL_ISIZE_HEIGHT(img_pos.h));
> +	fimc_write(cfg, EXYNOS_CIREAL_ISIZE);
> +
> +	/*
> +	 * set input FIFO image size
> +	 * for now, we support only ITU601 8 bit mode
> +	 */
> +	cfg = (EXYNOS_CISRCFMT_ITU601_8BIT |
> +		EXYNOS_CISRCFMT_SOURCEHSIZE(img_sz.hsize) |
> +		EXYNOS_CISRCFMT_SOURCEVSIZE(img_sz.vsize));
> +	fimc_write(cfg, EXYNOS_CISRCFMT);
> +
> +	/* offset Y(RGB), Cb, Cr */
> +	cfg = (EXYNOS_CIIYOFF_HORIZONTAL(img_pos.x) |
> +		EXYNOS_CIIYOFF_VERTICAL(img_pos.y));
> +	fimc_write(cfg, EXYNOS_CIIYOFF);
> +	cfg = (EXYNOS_CIICBOFF_HORIZONTAL(img_pos.x) |
> +		EXYNOS_CIICBOFF_VERTICAL(img_pos.y));
> +	fimc_write(cfg, EXYNOS_CIICBOFF);
> +	cfg = (EXYNOS_CIICROFF_HORIZONTAL(img_pos.x) |
> +		EXYNOS_CIICROFF_VERTICAL(img_pos.y));
> +	fimc_write(cfg, EXYNOS_CIICROFF);
> +
> +	return fimc_set_window(ctx, &img_pos, &img_sz);
> +}
> +
> +static int fimc_src_set_addr(struct device *dev,
> +			struct drm_exynos_ipp_buf_info *buf_info, u32
buf_id,
> +			enum drm_exynos_ipp_buf_type buf_type)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	struct drm_exynos_ipp_cmd_node *c_node = ippdrv->cmd;
> +	struct drm_exynos_ipp_property *property;
> +	struct drm_exynos_ipp_config *config;
> +
> +	if (!c_node) {
> +		DRM_ERROR("failed to get c_node.\n");
> +		return -EINVAL;
> +	}
> +
> +	property = &c_node->property;
> +	if (!property) {
> +		DRM_ERROR("failed to get property.\n");
> +		return -EINVAL;
> +	}
> +
> +	DRM_DEBUG_KMS("%s:prop_id[%d]buf_id[%d]buf_type[%d]\n", __func__,
> +		property->prop_id, buf_id, buf_type);
> +
> +	if (buf_id > FIMC_MAX_SRC) {
> +		dev_info(ippdrv->dev, "inavlid buf_id %d.\n", buf_id);
> +		return -ENOMEM;
> +	}
> +
> +	/* address register set */
> +	switch (buf_type) {
> +	case IPP_BUF_ENQUEUE:
> +		config = &property->config[EXYNOS_DRM_OPS_SRC];
> +		fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y],
> +			EXYNOS_CIIYSA(buf_id));

YUV format should always be used as Source buffer?

> +
> +		if (config->fmt == DRM_FORMAT_YVU420) {
> +			fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
> +				EXYNOS_CIICBSA(buf_id));
> +			fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
> +				EXYNOS_CIICRSA(buf_id));
> +		} else {
> +			fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
> +				EXYNOS_CIICBSA(buf_id));
> +			fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
> +				EXYNOS_CIICRSA(buf_id));
> +		}
> +		break;
> +	case IPP_BUF_DEQUEUE:
> +		fimc_write(0x0, EXYNOS_CIIYSA(buf_id));
> +		fimc_write(0x0, EXYNOS_CIICBSA(buf_id));
> +		fimc_write(0x0, EXYNOS_CIICRSA(buf_id));
> +		break;
> +	default:
> +		/* bypass */
> +		break;
> +	}
> +
> +	return 0;
> +}
> +
> +static struct exynos_drm_ipp_ops fimc_src_ops = {
> +	.set_fmt = fimc_src_set_fmt,
> +	.set_transf = fimc_src_set_transf,
> +	.set_size = fimc_src_set_size,
> +	.set_addr = fimc_src_set_addr,
> +};
> +
> +static int fimc_dst_set_fmt_order(struct fimc_context *ctx, u32 fmt)
> +{

Combine fimc_src/dst_set_fmt_order function. And you could use each offset
to check if src or dst.


> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:fmt[0x%x]\n", __func__, fmt);
> +
> +	/* RGB */
> +	cfg = fimc_read(EXYNOS_CISCCTRL);
> +	cfg &= ~EXYNOS_CISCCTRL_OUTRGB_FMT_RGB_MASK;
> +
> +	switch (fmt) {
> +	case DRM_FORMAT_RGB565:
> +		cfg |= EXYNOS_CISCCTRL_OUTRGB_FMT_RGB565;
> +		fimc_write(cfg, EXYNOS_CISCCTRL);
> +		return 0;
> +	case DRM_FORMAT_RGB888:
> +		cfg |= EXYNOS_CISCCTRL_OUTRGB_FMT_RGB888;
> +		fimc_write(cfg, EXYNOS_CISCCTRL);
> +		return 0;
> +	case DRM_FORMAT_XRGB8888:
> +		cfg |= (EXYNOS_CISCCTRL_OUTRGB_FMT_RGB888 |
> +			EXYNOS_CISCCTRL_EXTRGB_EXTENSION);
> +		fimc_write(cfg, EXYNOS_CISCCTRL);
> +		break;
> +	default:
> +		/* bypass */
> +		break;
> +	}
> +
> +	/* YUV */
> +	cfg = fimc_read(EXYNOS_CIOCTRL);
> +	cfg &= ~(EXYNOS_CIOCTRL_ORDER2P_MASK |
> +		EXYNOS_CIOCTRL_ORDER422_MASK |
> +		EXYNOS_CIOCTRL_YCBCR_PLANE_MASK);
> +
> +	switch (fmt) {
> +	case DRM_FORMAT_XRGB8888:
> +		cfg |= EXYNOS_CIOCTRL_ALPHA_OUT;
> +		break;
> +	case DRM_FORMAT_YUYV:
> +		cfg |= EXYNOS_CIOCTRL_ORDER422_YCBYCR;
> +		break;
> +	case DRM_FORMAT_YVYU:
> +		cfg |= EXYNOS_CIOCTRL_ORDER422_YCRYCB;
> +		break;
> +	case DRM_FORMAT_UYVY:
> +		cfg |= EXYNOS_CIOCTRL_ORDER422_CBYCRY;
> +		break;
> +	case DRM_FORMAT_VYUY:
> +		cfg |= EXYNOS_CIOCTRL_ORDER422_CRYCBY;
> +		break;
> +	case DRM_FORMAT_NV21:
> +	case DRM_FORMAT_NV61:
> +		cfg |= EXYNOS_CIOCTRL_ORDER2P_LSB_CRCB;
> +		cfg |= EXYNOS_CIOCTRL_YCBCR_2PLANE;
> +		break;
> +	case DRM_FORMAT_YUV422:
> +	case DRM_FORMAT_YUV420:
> +	case DRM_FORMAT_YVU420:
> +		cfg |= EXYNOS_CIOCTRL_YCBCR_3PLANE;
> +		break;
> +	case DRM_FORMAT_NV12:
> +	case DRM_FORMAT_NV12MT:
> +	case DRM_FORMAT_NV16:
> +		cfg |= EXYNOS_CIOCTRL_ORDER2P_LSB_CBCR;
> +		cfg |= EXYNOS_CIOCTRL_YCBCR_2PLANE;
> +		break;
> +	default:
> +		dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n",
> fmt);
> +		return -EINVAL;
> +	}
> +
> +	fimc_write(cfg, EXYNOS_CIOCTRL);
> +
> +	return 0;
> +}
> +
> +static int fimc_dst_set_fmt(struct device *dev, u32 fmt)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:fmt[0x%x]\n", __func__, fmt);
> +
> +	cfg = fimc_read(EXYNOS_CIEXTEN);
> +
> +	if (fmt == DRM_FORMAT_AYUV) {
> +		cfg |= EXYNOS_CIEXTEN_YUV444_OUT;
> +		fimc_write(cfg, EXYNOS_CIEXTEN);
> +	} else {
> +		cfg &= ~EXYNOS_CIEXTEN_YUV444_OUT;
> +		fimc_write(cfg, EXYNOS_CIEXTEN);
> +
> +		cfg = fimc_read(EXYNOS_CITRGFMT);
> +		cfg &= ~EXYNOS_CITRGFMT_OUTFORMAT_MASK;
> +
> +		switch (fmt) {
> +		case DRM_FORMAT_RGB565:
> +		case DRM_FORMAT_RGB888:
> +		case DRM_FORMAT_XRGB8888:
> +			cfg |= EXYNOS_CITRGFMT_OUTFORMAT_RGB;
> +			break;
> +		case DRM_FORMAT_YUYV:
> +		case DRM_FORMAT_YVYU:
> +		case DRM_FORMAT_UYVY:
> +		case DRM_FORMAT_VYUY:
> +			cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR422_1PLANE;
> +			break;
> +		case DRM_FORMAT_NV16:
> +		case DRM_FORMAT_NV61:
> +		case DRM_FORMAT_YUV422:
> +			cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR422;
> +			break;
> +		case DRM_FORMAT_YUV420:
> +		case DRM_FORMAT_YVU420:
> +		case DRM_FORMAT_NV12:
> +		case DRM_FORMAT_NV12MT:
> +		case DRM_FORMAT_NV21:
> +			cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR420;
> +			break;
> +		default:
> +			dev_err(ippdrv->dev, "inavlid target format
0x%x.\n",
> +				fmt);
> +			return -EINVAL;
> +		}
> +
> +		fimc_write(cfg, EXYNOS_CITRGFMT);
> +	}
> +
> +	cfg = fimc_read(EXYNOS_CIDMAPARAM);
> +	cfg &= ~EXYNOS_CIDMAPARAM_W_MODE_MASK;
> +
> +	if (fmt == DRM_FORMAT_NV12MT)
> +		cfg |= EXYNOS_CIDMAPARAM_W_MODE_64X32;
> +	else
> +		cfg |= EXYNOS_CIDMAPARAM_W_MODE_LINEAR;
> +
> +	fimc_write(cfg, EXYNOS_CIDMAPARAM);
> +
> +	return fimc_dst_set_fmt_order(ctx, fmt);
> +}
> +
> +static int fimc_dst_set_transf(struct device *dev,
> +		enum drm_exynos_degree degree,
> +		enum drm_exynos_flip flip)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:degree[%d]flip[0x%x]\n", __func__,
> +		degree, flip);
> +
> +	cfg = fimc_read(EXYNOS_CITRGFMT);
> +	cfg &= ~EXYNOS_CITRGFMT_FLIP_MASK;
> +	cfg &= ~EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE;
> +
> +	switch (degree) {
> +	case EXYNOS_DRM_DEGREE_0:
> +		if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> +			cfg |= EXYNOS_CITRGFMT_FLIP_X_MIRROR;
> +		if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> +			cfg |= EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
> +		break;
> +	case EXYNOS_DRM_DEGREE_90:
> +		cfg |= EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE;
> +		if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> +			cfg |= EXYNOS_CITRGFMT_FLIP_X_MIRROR;
> +		if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> +			cfg |= EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
> +		break;
> +	case EXYNOS_DRM_DEGREE_180:
> +		cfg |= (EXYNOS_CITRGFMT_FLIP_X_MIRROR |
> +			EXYNOS_CITRGFMT_FLIP_Y_MIRROR);
> +		if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> +			cfg &= ~EXYNOS_CITRGFMT_FLIP_X_MIRROR;
> +		if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> +			cfg &= ~EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
> +		break;
> +	case EXYNOS_DRM_DEGREE_270:
> +		cfg |= (EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE |
> +			EXYNOS_CITRGFMT_FLIP_X_MIRROR |
> +			EXYNOS_CITRGFMT_FLIP_Y_MIRROR);
> +		if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
> +			cfg &= ~EXYNOS_CITRGFMT_FLIP_X_MIRROR;
> +		if (flip & EXYNOS_DRM_FLIP_VERTICAL)
> +			cfg &= ~EXYNOS_CITRGFMT_FLIP_Y_MIRROR;
> +		break;
> +	default:
> +		dev_err(ippdrv->dev, "inavlid degree value %d.\n", degree);
> +		return -EINVAL;
> +	}
> +
> +	fimc_write(cfg, EXYNOS_CITRGFMT);
> +
> +	return (cfg & EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE) ? 1 : 0;
> +}
> +
> +static int fimc_get_ratio_shift(u32 src, u32 dst, u32 *ratio, u32 *shift)
> +{
> +	DRM_DEBUG_KMS("%s:src[%d]dst[%d]\n", __func__, src, dst);
> +
> +	if (src >= dst * 64) {
> +		DRM_ERROR("failed to make ratio and shift.\n");
> +		return -EINVAL;
> +	} else if (src >= dst * 32) {
> +		*ratio = 32;
> +		*shift = 5;
> +	} else if (src >= dst * 16) {
> +		*ratio = 16;
> +		*shift = 4;
> +	} else if (src >= dst * 8) {
> +		*ratio = 8;
> +		*shift = 3;
> +	} else if (src >= dst * 4) {
> +		*ratio = 4;
> +		*shift = 2;
> +	} else if (src >= dst * 2) {
> +		*ratio = 2;
> +		*shift = 1;
> +	} else {
> +		*ratio = 1;
> +		*shift = 0;
> +	}
> +
> +	return 0;
> +}
> +
> +static int fimc_set_prescaler(struct fimc_context *ctx, struct
> fimc_scaler *sc,
> +		struct drm_exynos_pos *src, struct drm_exynos_pos *dst)
> +{
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	u32 cfg, cfg_ext, shfactor;
> +	u32 pre_dst_width, pre_dst_height;
> +	u32 pre_hratio, hfactor, pre_vratio, vfactor;
> +	int ret = 0;
> +	u32 src_w, src_h, dst_w, dst_h;
> +
> +	cfg_ext = fimc_read(EXYNOS_CITRGFMT);
> +	if (cfg_ext & EXYNOS_CITRGFMT_INROT90_CLOCKWISE) {
> +		src_w = src->h;
> +		src_h = src->w;
> +	} else {
> +		src_w = src->w;
> +		src_h = src->h;
> +	}
> +
> +	if (cfg_ext & EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE) {
> +		dst_w = dst->h;
> +		dst_h = dst->w;
> +	} else {
> +		dst_w = dst->w;
> +		dst_h = dst->h;
> +	}
> +
> +	ret = fimc_get_ratio_shift(src_w, dst_w, &pre_hratio, &hfactor);
> +	if (ret) {
> +		dev_err(ippdrv->dev, "failed to get ratio horizontal.\n");
> +		return ret;
> +	}
> +
> +	ret = fimc_get_ratio_shift(src_h, dst_h, &pre_vratio, &vfactor);
> +	if (ret) {
> +		dev_err(ippdrv->dev, "failed to get ratio vertical.\n");
> +		return ret;
> +	}
> +
> +	pre_dst_width = src_w / pre_hratio;
> +	pre_dst_height = src_h / pre_vratio;
> +	DRM_DEBUG_KMS("%s:pre_dst_width[%d]pre_dst_height[%d]\n", __func__,
> +		pre_dst_width, pre_dst_height);
> +
> 	DRM_DEBUG_KMS("%s:pre_hratio[%d]hfactor[%d]pre_vratio[%d]vfactor[%d
> ]\n",
> +		__func__, pre_hratio, hfactor, pre_vratio, vfactor);
> +
> +	sc->hratio = (src_w << 14) / (dst_w << hfactor);
> +	sc->vratio = (src_h << 14) / (dst_h << vfactor);
> +	sc->up_h = (dst_w >= src_w) ? true : false;
> +	sc->up_v = (dst_h >= src_h) ? true : false;
> +	DRM_DEBUG_KMS("%s:hratio[%d]vratio[%d]up_h[%d]up_v[%d]\n",
> +	__func__, sc->hratio, sc->vratio, sc->up_h, sc->up_v);
> +
> +	shfactor = 10 - (hfactor + vfactor);

What is 10? use macro instead.

> +	DRM_DEBUG_KMS("%s:shfactor[%d]\n", __func__, shfactor);
> +
> +	cfg = (EXYNOS_CISCPRERATIO_SHFACTOR(shfactor) |
> +		EXYNOS_CISCPRERATIO_PREHORRATIO(pre_hratio) |
> +		EXYNOS_CISCPRERATIO_PREVERRATIO(pre_vratio));
> +	fimc_write(cfg, EXYNOS_CISCPRERATIO);
> +
> +	cfg = (EXYNOS_CISCPREDST_PREDSTWIDTH(pre_dst_width) |
> +		EXYNOS_CISCPREDST_PREDSTHEIGHT(pre_dst_height));
> +	fimc_write(cfg, EXYNOS_CISCPREDST);
> +
> +	return ret;
> +}
> +
> +static void fimc_set_scaler(struct fimc_context *ctx, struct fimc_scaler
> *sc)
> +{
> +	u32 cfg, cfg_ext;
> +
> +	DRM_DEBUG_KMS("%s:range[%d]bypass[%d]up_h[%d]up_v[%d]\n",
> +		__func__, sc->range, sc->bypass, sc->up_h, sc->up_v);
> +	DRM_DEBUG_KMS("%s:hratio[%d]vratio[%d]\n",
> +		__func__, sc->hratio, sc->vratio);
> +
> +	cfg = fimc_read(EXYNOS_CISCCTRL);
> +	cfg &= ~(EXYNOS_CISCCTRL_SCALERBYPASS |
> +		EXYNOS_CISCCTRL_SCALEUP_H | EXYNOS_CISCCTRL_SCALEUP_V |
> +		EXYNOS_CISCCTRL_MAIN_V_RATIO_MASK |
> +		EXYNOS_CISCCTRL_MAIN_H_RATIO_MASK |
> +		EXYNOS_CISCCTRL_CSCR2Y_WIDE |
> +		EXYNOS_CISCCTRL_CSCY2R_WIDE);
> +
> +	if (sc->range)
> +		cfg |= (EXYNOS_CISCCTRL_CSCR2Y_WIDE |
> +			EXYNOS_CISCCTRL_CSCY2R_WIDE);
> +	if (sc->bypass)
> +		cfg |= EXYNOS_CISCCTRL_SCALERBYPASS;
> +	if (sc->up_h)
> +		cfg |= EXYNOS_CISCCTRL_SCALEUP_H;
> +	if (sc->up_v)
> +		cfg |= EXYNOS_CISCCTRL_SCALEUP_V;
> +
> +	cfg |= (EXYNOS_CISCCTRL_MAINHORRATIO((sc->hratio >> 6)) |
> +		EXYNOS_CISCCTRL_MAINVERRATIO((sc->vratio >> 6)));
> +	fimc_write(cfg, EXYNOS_CISCCTRL);
> +
> +	cfg_ext = fimc_read(EXYNOS_CIEXTEN);
> +	cfg_ext &= ~EXYNOS_CIEXTEN_MAINHORRATIO_EXT_MASK;
> +	cfg_ext &= ~EXYNOS_CIEXTEN_MAINVERRATIO_EXT_MASK;
> +	cfg_ext |= (EXYNOS_CIEXTEN_MAINHORRATIO_EXT(sc->hratio) |
> +		EXYNOS_CIEXTEN_MAINVERRATIO_EXT(sc->vratio));
> +	fimc_write(cfg_ext, EXYNOS_CIEXTEN);
> +}
> +
> +static int fimc_dst_set_size(struct device *dev, int swap,
> +	struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct drm_exynos_pos img_pos = *pos;
> +	struct drm_exynos_sz img_sz = *sz;
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:swap[%d]hsize[%d]vsize[%d]\n",
> +		__func__, swap, sz->hsize, sz->vsize);
> +
> +	/* original size */
> +	cfg = (EXYNOS_ORGOSIZE_HORIZONTAL(img_sz.hsize) |
> +		EXYNOS_ORGOSIZE_VERTICAL(img_sz.vsize));
> +
> +	fimc_write(cfg, EXYNOS_ORGOSIZE);
> +
> +	DRM_DEBUG_KMS("%s:x[%d]y[%d]w[%d]h[%d]\n",
> +		__func__, pos->x, pos->y, pos->w, pos->h);
> +
> +	/* CSC ITU */
> +	cfg = fimc_read(EXYNOS_CIGCTRL);
> +	cfg &= ~EXYNOS_CIGCTRL_CSC_MASK;
> +
> +	if (sz->hsize >= FIMC_WIDTH_ITU_709)
> +		cfg |= EXYNOS_CIGCTRL_CSC_ITU709;
> +	else
> +		cfg |= EXYNOS_CIGCTRL_CSC_ITU601;
> +
> +	fimc_write(cfg, EXYNOS_CIGCTRL);
> +
> +	if (swap) {
> +		img_pos.w = pos->h;
> +		img_pos.h = pos->w;
> +		img_sz.hsize = sz->vsize;
> +		img_sz.vsize = sz->hsize;
> +	}
> +
> +	/* target image size */
> +	cfg = fimc_read(EXYNOS_CITRGFMT);
> +	cfg &= ~(EXYNOS_CITRGFMT_TARGETH_MASK |
> +		EXYNOS_CITRGFMT_TARGETV_MASK);
> +	cfg |= (EXYNOS_CITRGFMT_TARGETHSIZE(img_pos.w) |
> +		EXYNOS_CITRGFMT_TARGETVSIZE(img_pos.h));
> +	fimc_write(cfg, EXYNOS_CITRGFMT);
> +
> +	/* target area */
> +	cfg = EXYNOS_CITAREA_TARGET_AREA(img_pos.w * img_pos.h);
> +	fimc_write(cfg, EXYNOS_CITAREA);
> +
> +	/* ToDo: Move Scaler in this line and YUV */
> +
> +	/* offset Y(RGB), Cb, Cr */
> +	cfg = (EXYNOS_CIOYOFF_HORIZONTAL(img_pos.x) |
> +		EXYNOS_CIOYOFF_VERTICAL(img_pos.y));
> +	fimc_write(cfg, EXYNOS_CIOYOFF);
> +	cfg = (EXYNOS_CIOCBOFF_HORIZONTAL(img_pos.x) |
> +		EXYNOS_CIOCBOFF_VERTICAL(img_pos.y));
> +	fimc_write(cfg, EXYNOS_CIOCBOFF);
> +	cfg = (EXYNOS_CIOCROFF_HORIZONTAL(img_pos.x) |
> +		EXYNOS_CIOCROFF_VERTICAL(img_pos.y));
> +	fimc_write(cfg, EXYNOS_CIOCROFF);
> +
> +	return 0;
> +}
> +
> +static int fimc_dst_get_buf_seq(struct fimc_context *ctx)
> +{
> +	u32 cfg, i, buf_num = 0;
> +	u32 mask = 0x00000001;
> +
> +	cfg = fimc_read(EXYNOS_CIFCNTSEQ);
> +
> +	for (i = 0; i < FIMC_REG_SZ; i++)
> +		if (cfg & (mask << i))
> +			buf_num++;
> +
> +	DRM_DEBUG_KMS("%s:buf_num[%d]\n", __func__, buf_num);
> +
> +	return buf_num;
> +}
> +
> +static int fimc_dst_set_buf_seq(struct fimc_context *ctx, u32 buf_id,
> +	enum drm_exynos_ipp_buf_type buf_type)
> +{
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	bool enable;
> +	u32 cfg;
> +	u32 mask = 0x00000001 << buf_id;
> +	unsigned long flags;
> +	int ret = 0;
> +
> +	DRM_DEBUG_KMS("%s:buf_id[%d]buf_type[%d]\n", __func__,
> +		buf_id, buf_type);
> +
> +	spin_lock_irqsave(&ctx->lock, flags);

Why do you use spin_lock_irqsave?

> +
> +	/* mask register set */
> +	cfg = fimc_read(EXYNOS_CIFCNTSEQ);
> +
> +	switch (buf_type) {
> +	case IPP_BUF_ENQUEUE:
> +		enable = true;
> +		break;
> +	case IPP_BUF_DEQUEUE:
> +		enable = false;
> +		break;
> +	default:
> +		dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n");
> +		ret =  -EINVAL;
> +		goto err_unlock;
> +	}
> +
> +	/* sequence id */
> +	cfg &= (~mask);
> +	cfg |= (enable << buf_id);
> +	fimc_write(cfg, EXYNOS_CIFCNTSEQ);
> +
> +	/* interrupt enable */
> +	if (buf_type == IPP_BUF_ENQUEUE &&
> +	    fimc_dst_get_buf_seq(ctx) >= FIMC_BUF_START)
> +		fimc_handle_irq(ctx, true, false, true);
> +
> +	/* interrupt disable */
> +	if (buf_type == IPP_BUF_DEQUEUE &&
> +	    fimc_dst_get_buf_seq(ctx) <= FIMC_BUF_STOP)
> +		fimc_handle_irq(ctx, false, false, true);
> +
> +err_unlock:
> +	spin_unlock_irqrestore(&ctx->lock, flags);
> +	return ret;
> +}
> +
> +static int fimc_dst_set_addr(struct device *dev,
> +			struct drm_exynos_ipp_buf_info *buf_info, u32
buf_id,
> +			enum drm_exynos_ipp_buf_type buf_type)

Combine fimc_src/dst_set_addr function. Only register offsets are different.

> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	struct drm_exynos_ipp_cmd_node *c_node = ippdrv->cmd;
> +	struct drm_exynos_ipp_property *property;
> +	struct drm_exynos_ipp_config *config;
> +
> +	if (!c_node) {
> +		DRM_ERROR("failed to get c_node.\n");
> +		return -EINVAL;
> +	}
> +
> +	property = &c_node->property;
> +	if (!property) {
> +		DRM_ERROR("failed to get property.\n");
> +		return -EINVAL;
> +	}
> +
> +	DRM_DEBUG_KMS("%s:prop_id[%d]buf_id[%d]buf_type[%d]\n", __func__,
> +		property->prop_id, buf_id, buf_type);
> +
> +	if (buf_id > FIMC_MAX_DST) {
> +		dev_info(ippdrv->dev, "inavlid buf_id %d.\n", buf_id);
> +		return -ENOMEM;
> +	}
> +
> +	/* address register set */
> +	switch (buf_type) {
> +	case IPP_BUF_ENQUEUE:
> +		config = &property->config[EXYNOS_DRM_OPS_DST];
> +
> +		fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y],
> +			EXYNOS_CIOYSA(buf_id));
> +
> +		if (config->fmt == DRM_FORMAT_YVU420) {
> +			fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
> +				EXYNOS_CIOCBSA(buf_id));
> +			fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
> +				EXYNOS_CIOCRSA(buf_id));
> +		} else {
> +			fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
> +				EXYNOS_CIOCBSA(buf_id));
> +			fimc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
> +				EXYNOS_CIOCRSA(buf_id));
> +		}
> +		break;
> +	case IPP_BUF_DEQUEUE:
> +		fimc_write(0x0, EXYNOS_CIOYSA(buf_id));
> +		fimc_write(0x0, EXYNOS_CIOCBSA(buf_id));
> +		fimc_write(0x0, EXYNOS_CIOCRSA(buf_id));
> +		break;
> +	default:
> +		/* bypass */
> +		break;
> +	}
> +
> +	return fimc_dst_set_buf_seq(ctx, buf_id, buf_type);
> +}
> +
> +static struct exynos_drm_ipp_ops fimc_dst_ops = {
> +	.set_fmt = fimc_dst_set_fmt,
> +	.set_transf = fimc_dst_set_transf,
> +	.set_size = fimc_dst_set_size,
> +	.set_addr = fimc_dst_set_addr,
> +};
> +
> +static int fimc_power_on(struct fimc_context *ctx, bool enable)
> +{
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +
> +	DRM_DEBUG_KMS("%s:enable[%d]\n", __func__, enable);
> +
> +	if (enable) {
> +		if (ctx->ver == FIMC_EXYNOS_4210) {
> +			ctx->sclk_fimc_clk = clk_get(ippdrv->dev,
"sclk_fimc");
> +			if (IS_ERR(ctx->sclk_fimc_clk)) {
> +				dev_err(ippdrv->dev, "failed to get src fimc
> clock.\n");
> +				return -EINVAL;
> +			}
> +			clk_enable(ctx->sclk_fimc_clk);
> +		} else
> +			clk_enable(ctx->sclk_fimc_clk);
> +
> +		clk_enable(ctx->fimc_clk);
> +		clk_enable(ctx->wb_clk);
> +		/* ToDo : wb_b_clk */
> +		ctx->suspended = false;
> +	} else {
> +		clk_disable(ctx->sclk_fimc_clk);
> +		clk_disable(ctx->fimc_clk);
> +		clk_disable(ctx->wb_clk);
> +		/* ToDo : wb_b_clk */
> +		ctx->suspended = true;
> +	}
> +
> +	return 0;
> +}
> +
> +static irqreturn_t fimc_irq_handler(int irq, void *dev_id)
> +{
> +	struct fimc_context *ctx = dev_id;
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	struct drm_exynos_ipp_cmd_node *c_node = ippdrv->cmd;
> +	struct drm_exynos_ipp_event_work *event_work =
> +		c_node->event_work;
> +	int buf_id;
> +
> +	DRM_DEBUG_KMS("%s:fimc id[%d]\n", __func__, ctx->id);
> +
> +	fimc_clear_irq(ctx);
> +	if (fimc_check_ovf(ctx))
> +		return IRQ_NONE;
> +
> +	if (!fimc_check_frame_end(ctx))
> +		return IRQ_NONE;
> +
> +	buf_id = fimc_get_buf_id(ctx);
> +	if (buf_id < 0)
> +		return IRQ_HANDLED;
> +
> +	DRM_DEBUG_KMS("%s:buf_id[%d]\n", __func__, buf_id);
> +
> +	if (fimc_dst_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE) < 0) {
> +		DRM_ERROR("failed to dequeue.\n");
> +		return IRQ_HANDLED;
> +	}
> +
> +	event_work->ippdrv = ippdrv;
> +	event_work->buf_id[EXYNOS_DRM_OPS_DST] = buf_id;
> +	queue_work(ippdrv->event_workq, (struct work_struct *)event_work);
> +
> +	return IRQ_HANDLED;
> +}
> +
> +static int fimc_init_prop_list(struct drm_exynos_ipp_prop_list
> **prop_list)
> +{
> +	DRM_DEBUG_KMS("%s\n", __func__);
> +
> +	if (!prop_list) {
> +		DRM_ERROR("empty prop_list\n");
> +		return -EINVAL;
> +	}
> +
> +	*prop_list = kzalloc(sizeof(**prop_list), GFP_KERNEL);
> +	if (!*prop_list) {
> +		DRM_ERROR("failed to alloc property list.\n");
> +		return -ENOMEM;
> +	}
> +	/*ToDo : fix supported function list*/
> +	(*prop_list)->version = 1;
> +	(*prop_list)->writeback = 1;
> +	(*prop_list)->refresh_min = 12;
> +	(*prop_list)->refresh_max = 60;

Use macro instead.

> +	(*prop_list)->flip = (1 << EXYNOS_DRM_FLIP_NONE) |
> +				(1 << EXYNOS_DRM_FLIP_VERTICAL) |
> +				(1 << EXYNOS_DRM_FLIP_HORIZONTAL);
> +	(*prop_list)->degree = (1 << EXYNOS_DRM_DEGREE_0) |
> +				(1 << EXYNOS_DRM_DEGREE_90) |
> +				(1 << EXYNOS_DRM_DEGREE_180) |
> +				(1 << EXYNOS_DRM_DEGREE_270);
> +	(*prop_list)->csc = 1;
> +	(*prop_list)->crop = 1;
> +	(*prop_list)->crop_max.hsize = 8192;
> +	(*prop_list)->crop_max.vsize = 8192;
> +	(*prop_list)->crop_min.hsize = 32;
> +	(*prop_list)->crop_min.vsize = 32;

Ditto.

> +	(*prop_list)->scale = 1;
> +	(*prop_list)->scale_max.hsize = 4224;
> +	(*prop_list)->scale_max.vsize = 4224;
> +	(*prop_list)->scale_min.hsize = 32;
> +	(*prop_list)->scale_min.vsize = 32;

Ditto.

> +
> +	return 0;
> +}
> +
> +static int fimc_ippdrv_check_property(struct device *dev,
> +				struct drm_exynos_ipp_property *property)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	struct drm_exynos_ipp_prop_list *pp = ippdrv->prop_list;
> +	struct drm_exynos_ipp_config *config;
> +	struct drm_exynos_pos *pos;
> +	struct drm_exynos_sz *sz;
> +	bool swap;
> +	int i;
> +
> +	DRM_DEBUG_KMS("%s\n", __func__);
> +
> +	for_each_ipp_ops(i) {
> +		if ((i == EXYNOS_DRM_OPS_SRC) &&
> +			(property->cmd == IPP_CMD_WB))
> +			continue;
> +
> +		config = &property->config[i];
> +		pos = &config->pos;
> +		sz = &config->sz;
> +
> +		/* check for flip */
> +		switch (config->flip) {
> +		case EXYNOS_DRM_FLIP_NONE:
> +		case EXYNOS_DRM_FLIP_VERTICAL:
> +		case EXYNOS_DRM_FLIP_HORIZONTAL:
> +			/* No problem */
> +			break;
> +		default:
> +			DRM_ERROR("invalid flip.\n");
> +			goto err_property;
> +		}

Use if-else instead of switch-case. That could be checked using if-else
simply.

> +
> +		/* check for degree */
> +		switch (config->degree) {
> +		case EXYNOS_DRM_DEGREE_90:
> +		case EXYNOS_DRM_DEGREE_270:
> +			swap = true;
> +			break;
> +		case EXYNOS_DRM_DEGREE_0:
> +		case EXYNOS_DRM_DEGREE_180:
> +			swap = false;
> +			break;
> +		default:
> +			DRM_ERROR("invalid degree.\n");
> +			goto err_property;
> +		}
> +
> +		/* check for buffer bound */
> +		if ((pos->x + pos->w > sz->hsize) ||
> +			(pos->y + pos->h > sz->vsize)) {
> +			DRM_ERROR("out of buf bound.\n");
> +			goto err_property;
> +		}
> +
> +		/* check for crop */
> +		if ((i == EXYNOS_DRM_OPS_SRC) && (pp->crop)) {
> +			if (swap) {
> +				if ((pos->h < pp->crop_min.hsize) ||
> +					(sz->vsize > pp->crop_max.hsize) ||
> +					(pos->w < pp->crop_min.vsize) ||
> +					(sz->hsize > pp->crop_max.vsize)) {
> +					DRM_ERROR("out of crop size.\n");
> +					goto err_property;
> +				}
> +			} else {
> +				if ((pos->w < pp->crop_min.hsize) ||
> +					(sz->hsize > pp->crop_max.hsize) ||
> +					(pos->h < pp->crop_min.vsize) ||
> +					(sz->vsize > pp->crop_max.vsize)) {
> +					DRM_ERROR("out of crop size.\n");
> +					goto err_property;
> +				}
> +			}
> +		}
> +
> +		/* check for scale */
> +		if ((i == EXYNOS_DRM_OPS_DST) && (pp->scale)) {
> +			if (swap) {
> +				if ((pos->h < pp->scale_min.hsize) ||
> +					(sz->vsize > pp->scale_max.hsize) ||
> +					(pos->w < pp->scale_min.vsize) ||
> +					(sz->hsize > pp->scale_max.vsize)) {
> +					DRM_ERROR("out of scale size.\n");
> +					goto err_property;
> +				}
> +			} else {
> +				if ((pos->w < pp->scale_min.hsize) ||
> +					(sz->hsize > pp->scale_max.hsize) ||
> +					(pos->h < pp->scale_min.vsize) ||
> +					(sz->vsize > pp->scale_max.vsize)) {
> +					DRM_ERROR("out of scale size.\n");
> +					goto err_property;
> +				}
> +			}
> +		}
> +	}
> +
> +	return 0;
> +
> +err_property:
> +	for_each_ipp_ops(i) {
> +		if ((i == EXYNOS_DRM_OPS_SRC) &&
> +			(property->cmd == IPP_CMD_WB))
> +			continue;
> +
> +		config = &property->config[i];
> +		pos = &config->pos;
> +		sz = &config->sz;
> +
> +		DRM_ERROR("[%s]f[%d]r[%d]pos[%d %d %d %d]sz[%d %d]\n",
> +			i ? "dst" : "src", config->flip, config->degree,
> +			pos->x, pos->y, pos->w, pos->h,
> +			sz->hsize, sz->vsize);
> +	}
> +
> +	return -EINVAL;
> +}
> +
> +static int fimc_ippdrv_reset(struct device *dev)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +
> +	DRM_DEBUG_KMS("%s\n", __func__);
> +
> +	/* reset h/w block */
> +	fimc_sw_reset(ctx, false);
> +
> +	/* reset scaler capability */
> +	memset(&ctx->sc, 0x0, sizeof(ctx->sc));
> +
> +	return 0;
> +}
> +
> +static int fimc_check_prepare(struct fimc_context *ctx)
> +{
> +	/* ToDo: check prepare using read register */
> +	DRM_DEBUG_KMS("%s\n", __func__);
> +
> +	return 0;
> +}
> +
> +static int fimc_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd
> cmd)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +	struct drm_exynos_ipp_cmd_node *c_node = ippdrv->cmd;
> +	struct drm_exynos_ipp_property *property;
> +	struct drm_exynos_ipp_config *config;
> +	struct drm_exynos_pos	img_pos[EXYNOS_DRM_OPS_MAX];
> +	struct drm_exynos_ipp_set_wb set_wb;
> +	int ret, i;
> +	u32 cfg0, cfg1;
> +
> +	DRM_DEBUG_KMS("%s:cmd[%d]\n", __func__, cmd);
> +
> +	if (!c_node) {
> +		DRM_ERROR("failed to get c_node.\n");
> +		return -EINVAL;
> +	}
> +
> +	property = &c_node->property;
> +	if (!property) {
> +		DRM_ERROR("failed to get property.\n");
> +		return -EINVAL;
> +	}
> +
> +	ret = fimc_check_prepare(ctx);
> +	if (ret) {
> +		dev_err(dev, "failed to check prepare.\n");
> +		return ret;
> +	}
> +
> +	fimc_handle_irq(ctx, true, false, true);
> +
> +	/* ToDo: window size, prescaler config */
> +	for_each_ipp_ops(i) {
> +		config = &property->config[i];
> +		img_pos[i] = config->pos;
> +	}
> +
> +	ret = fimc_set_prescaler(ctx, &ctx->sc,
> +		&img_pos[EXYNOS_DRM_OPS_SRC],
> +		&img_pos[EXYNOS_DRM_OPS_DST]);
> +	if (ret) {
> +		dev_err(dev, "failed to set precalser.\n");
> +		return ret;
> +	}
> +
> +	/* If set ture, we can save jpeg about screen */
> +	fimc_handle_jpeg(ctx, false);
> +	fimc_set_scaler(ctx, &ctx->sc);
> +	fimc_set_polarity(ctx, &ctx->pol);
> +
> +	switch (cmd) {
> +	case IPP_CMD_M2M:
> +		fimc_set_type_ctrl(ctx, FIMC_WB_NONE);
> +		fimc_handle_lastend(ctx, false);
> +
> +		/* setup dma */
> +		cfg0 = fimc_read(EXYNOS_MSCTRL);
> +		cfg0 &= ~EXYNOS_MSCTRL_INPUT_MASK;
> +		cfg0 |= EXYNOS_MSCTRL_INPUT_MEMORY;
> +		fimc_write(cfg0, EXYNOS_MSCTRL);
> +		break;
> +	case IPP_CMD_WB:
> +		fimc_set_type_ctrl(ctx, FIMC_WB_A);
> +		fimc_handle_lastend(ctx, true);
> +
> +		/* setup FIMD */
> +		fimc_set_camblk_fimd0_wb(ctx);
> +
> +		/* ToDo: need to replace the property structure. */
> +		set_wb.enable = 1;
> +		set_wb.refresh = property->reserved;
> +		exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void
> *)&set_wb);
> +		break;
> +	case IPP_CMD_OUTPUT:
> +	default:
> +		ret = -EINVAL;
> +		dev_err(dev, "invalid operations.\n");
> +		return ret;
> +	}
> +
> +	/* Reset status */
> +	fimc_write(0x0, EXYNOS_CISTATUS);
> +
> +	cfg0 = fimc_read(EXYNOS_CIIMGCPT);
> +	cfg0 &= ~EXYNOS_CIIMGCPT_IMGCPTEN_SC;
> +	cfg0 |= EXYNOS_CIIMGCPT_IMGCPTEN_SC;
> +
> +	/* Scaler */
> +	cfg1 = fimc_read(EXYNOS_CISCCTRL);
> +	cfg1 &= ~EXYNOS_CISCCTRL_SCAN_MASK;
> +	cfg1 |= (EXYNOS_CISCCTRL_PROGRESSIVE |
> +		EXYNOS_CISCCTRL_SCALERSTART);
> +
> +	fimc_write(cfg1, EXYNOS_CISCCTRL);
> +
> +	/* Enable image capture*/
> +	cfg0 |= EXYNOS_CIIMGCPT_IMGCPTEN;
> +	fimc_write(cfg0, EXYNOS_CIIMGCPT);
> +
> +	/* Disable frame end irq */
> +	cfg0 = fimc_read(EXYNOS_CIGCTRL);
> +	cfg0 &= ~EXYNOS_CIGCTRL_IRQ_END_DISABLE;
> +	fimc_write(cfg0, EXYNOS_CIGCTRL);
> +
> +	cfg0 = fimc_read(EXYNOS_CIOCTRL);
> +	cfg0 &= ~EXYNOS_CIOCTRL_WEAVE_MASK;
> +	fimc_write(cfg0, EXYNOS_CIOCTRL);
> +
> +	/* ToDo: m2m start errata - refer fimd */
> +	if (cmd == IPP_CMD_M2M) {
> +		cfg0 = fimc_read(EXYNOS_MSCTRL);
> +		cfg0 |= EXYNOS_MSCTRL_ENVID;
> +		fimc_write(cfg0, EXYNOS_MSCTRL);
> +
> +		cfg0 = fimc_read(EXYNOS_MSCTRL);
> +		cfg0 |= EXYNOS_MSCTRL_ENVID;
> +		fimc_write(cfg0, EXYNOS_MSCTRL);
> +	}
> +
> +	return 0;
> +}
> +
> +static void fimc_ippdrv_stop(struct device *dev, enum drm_exynos_ipp_cmd
> cmd)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct drm_exynos_ipp_set_wb set_wb = {0, 0};
> +	u32 cfg;
> +
> +	DRM_DEBUG_KMS("%s:cmd[%d]\n", __func__, cmd);
> +
> +	switch (cmd) {
> +	case IPP_CMD_M2M:
> +		/* Source clear */
> +		cfg = fimc_read(EXYNOS_MSCTRL);
> +		cfg &= ~EXYNOS_MSCTRL_INPUT_MASK;
> +		cfg &= ~EXYNOS_MSCTRL_ENVID;
> +		fimc_write(cfg, EXYNOS_MSCTRL);
> +		break;
> +	case IPP_CMD_WB:
> +		exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void
> *)&set_wb);
> +		break;
> +	case IPP_CMD_OUTPUT:
> +	default:
> +		dev_err(dev, "invalid operations.\n");
> +		break;
> +	}
> +
> +	fimc_handle_irq(ctx, false, false, true);
> +
> +	/* reset sequence */
> +	fimc_write(0x0, EXYNOS_CIFCNTSEQ);
> +
> +	/* Scaler disable */
> +	cfg = fimc_read(EXYNOS_CISCCTRL);
> +	cfg &= ~EXYNOS_CISCCTRL_SCALERSTART;
> +	fimc_write(cfg, EXYNOS_CISCCTRL);
> +
> +	/* Disable image capture */
> +	cfg = fimc_read(EXYNOS_CIIMGCPT);
> +	cfg &= ~(EXYNOS_CIIMGCPT_IMGCPTEN_SC | EXYNOS_CIIMGCPT_IMGCPTEN);
> +	fimc_write(cfg, EXYNOS_CIIMGCPT);
> +
> +	/* Enable frame end irq */
> +	cfg = fimc_read(EXYNOS_CIGCTRL);
> +	cfg |= EXYNOS_CIGCTRL_IRQ_END_DISABLE;
> +	fimc_write(cfg, EXYNOS_CIGCTRL);
> +}
> +
> +static struct fimc_capability *fimc_get_capability(
> +	enum exynos_drm_fimc_ver ver)
> +{
> +	struct fimc_capability *capa;
> +
> +	DRM_DEBUG_KMS("%s:ver[0x%x]\n", __func__, ver);
> +
> +	/* ToDo: version check */
> +	switch (ver) {
> +	case FIMC_EXYNOS_4412:
> +	case FIMC_EXYNOS_4412_R2:
> +	default:
> +		capa = fimc51_capa;
> +		break;
> +	}
> +
> +	return capa;
> +}
> +
> +static int fimc_get_clk_rate(enum exynos_drm_fimc_ver ver)
> +{
> +	int clk_rate;
> +
> +	DRM_DEBUG_KMS("%s:ver[0x%x]\n", __func__, ver);
> +
> +	switch (ver) {
> +	case FIMC_EXYNOS_4412_R2:
> +		clk_rate = FIMC_CLK_RATE_R2;
> +		break;
> +	case FIMC_EXYNOS_4412:
> +	default:
> +		clk_rate = FIMC_CLK_RATE;
> +		break;
> +	}
> +
> +	return clk_rate;
> +}
> +
> +static int __devinit fimc_probe(struct platform_device *pdev)
> +{
> +	struct device *dev = &pdev->dev;
> +	struct fimc_context *ctx;
> +	struct clk	*parent_clk;
> +	struct resource *res;
> +	struct exynos_drm_ippdrv *ippdrv;
> +	struct exynos_drm_fimc_pdata *pdata;
> +	int ret = -EINVAL;

Just use int ret;

> +
> +	pdata = pdev->dev.platform_data;
> +	if (!pdata) {
> +		dev_err(dev, "no platform data specified.\n");
> +		return -EINVAL;
> +	}
> +
> +	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> +	if (!ctx)
> +		return -ENOMEM;
> +
> +	/* clock control */
> +	ctx->sclk_fimc_clk = clk_get(dev, "sclk_fimc");
> +	if (IS_ERR(ctx->sclk_fimc_clk)) {
> +		dev_err(dev, "failed to get src fimc clock.\n");
> +		ret = PTR_ERR(ctx->sclk_fimc_clk);
> +		goto err_ctx;
> +	}
> +	clk_enable(ctx->sclk_fimc_clk);
> +
> +	ctx->fimc_clk = clk_get(dev, "fimc");
> +	if (IS_ERR(ctx->fimc_clk)) {
> +		dev_err(dev, "failed to get fimc clock.\n");
> +		ret = PTR_ERR(ctx->fimc_clk);

clk_disable(ctx->sclk_fimc_clk);

> +		clk_put(ctx->sclk_fimc_clk);
> +		goto err_ctx;
> +	}
> +
> +	ctx->wb_clk = clk_get(dev, "pxl_async0");
> +	if (IS_ERR(ctx->wb_clk)) {
> +		dev_err(dev, "failed to get writeback a clock.\n");
> +		ret = PTR_ERR(ctx->wb_clk);

clk_disable(ctx->sclk_fimc_clk);

> +		clk_put(ctx->sclk_fimc_clk);
> +		clk_put(ctx->fimc_clk);
> +		goto err_ctx;
> +	}
> +
> +	ctx->wb_b_clk = clk_get(dev, "pxl_async1");
> +	if (IS_ERR(ctx->wb_b_clk)) {
> +		dev_err(dev, "failed to get writeback b clock.\n");

clk_disable(ctx->sclk_fimc_clk);

> +		ret = PTR_ERR(ctx->wb_b_clk);

> +		clk_put(ctx->sclk_fimc_clk);
> +		clk_put(ctx->fimc_clk);
> +		clk_put(ctx->wb_clk);
> +		goto err_ctx;
> +	}
> +
> +	if (pdata->ver == FIMC_EXYNOS_4210)
> +		parent_clk = clk_get(dev, "mout_mpll");
> +	else
> +		parent_clk = clk_get(dev, "mout_mpll_user");
> +
> +	if (IS_ERR(parent_clk)) {
> +		dev_err(dev, "failed to get parent clock.\n");
> +		ret = PTR_ERR(parent_clk);

clk_disable(ctx->sclk_fimc_clk);

> +		clk_put(ctx->sclk_fimc_clk);
> +		clk_put(ctx->fimc_clk);
> +		clk_put(ctx->wb_clk);
> +		clk_put(ctx->wb_b_clk);
> +		goto err_ctx;
> +	}
> +
> +	if (clk_set_parent(ctx->sclk_fimc_clk, parent_clk)) {
> +		dev_err(dev, "failed to set parent.\n");

clk_disable(ctx->sclk_fimc_clk);

> +		clk_put(parent_clk);
> +		clk_put(ctx->sclk_fimc_clk);
> +		clk_put(ctx->fimc_clk);
> +		clk_put(ctx->wb_clk);
> +		clk_put(ctx->wb_b_clk);
> +		goto err_ctx;
> +	}
> +	clk_put(parent_clk);
> +	clk_set_rate(ctx->sclk_fimc_clk, fimc_get_clk_rate(pdata->ver));
> +	if (pdata->ver == FIMC_EXYNOS_4210)
> +		clk_put(ctx->sclk_fimc_clk);
> +	else
> +		clk_disable(ctx->sclk_fimc_clk);
> +
> +	/* resource memory */
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	if (!res) {
> +		dev_err(dev, "failed to find registers.\n");
> +		ret = -ENOENT;
> +		goto err_clk;
> +	}
> +
> +	ctx->regs_res = request_mem_region(res->start, resource_size(res),
> +					   dev_name(dev));
> +	if (!ctx->regs_res) {
> +		dev_err(dev, "failed to claim register region.\n");
> +		ret = -ENOENT;
> +		goto err_clk;
> +	}
> +
> +	ctx->regs = ioremap(res->start, resource_size(res));
> +	if (!ctx->regs) {
> +		dev_err(dev, "failed to map registers.\n");
> +		ret = -ENXIO;
> +		goto err_req_region;
> +	}
> +
> +	/* resource irq */
> +	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
> +	if (!res) {
> +		dev_err(dev, "failed to request irq resource.\n");
> +		goto err_get_regs;
> +	}
> +
> +	ctx->irq = res->start;
> +	ret = request_threaded_irq(ctx->irq, NULL, fimc_irq_handler,
> +		IRQF_ONESHOT, "drm_fimc", ctx);
> +	if (ret < 0) {
> +		dev_err(dev, "failed to request irq.\n");
> +		goto err_get_regs;
> +	}
> +
> +	/* context initailization */
> +	ctx->ver = pdata->ver;
> +	ctx->id = pdev->id;
> +	ctx->capa = fimc_get_capability(ctx->ver);
> +	if (!ctx->capa) {
> +		dev_err(dev, "failed to get capability.\n");
> +		goto err_get_irq;
> +	}
> +	ctx->pol = pdata->pol;
> +
> +	ippdrv = &ctx->ippdrv;
> +	ippdrv->dev = dev;
> +	ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &fimc_src_ops;
> +	ippdrv->ops[EXYNOS_DRM_OPS_DST] = &fimc_dst_ops;
> +	ippdrv->check_property = fimc_ippdrv_check_property;
> +	ippdrv->reset = fimc_ippdrv_reset;
> +	ippdrv->start = fimc_ippdrv_start;
> +	ippdrv->stop = fimc_ippdrv_stop;
> +	ret = fimc_init_prop_list(&ippdrv->prop_list);
> +	if (ret < 0) {
> +		dev_err(dev, "failed to init property list.\n");
> +		goto err_get_irq;
> +	}
> +
> +	DRM_DEBUG_KMS("%s:id[%d]ippdrv[0x%x]\n", __func__, ctx->id,
> +		(int)ippdrv);
> +
> +	spin_lock_init(&ctx->lock);
> +	platform_set_drvdata(pdev, ctx);
> +
> +	pm_runtime_set_active(dev);
> +	pm_runtime_enable(dev);
> +
> +	ret = exynos_drm_ippdrv_register(ippdrv);
> +	if (ret < 0) {
> +		dev_err(dev, "failed to register drm fimc device.\n");
> +		goto err_ippdrv_register;
> +	}
> +
> +	dev_info(&pdev->dev, "drm fimc registered successfully.\n");
> +
> +	return 0;
> +
> +err_ippdrv_register:
> +	kfree(ippdrv->prop_list);
> +	pm_runtime_disable(dev);
> +	free_irq(ctx->irq, ctx);
> +err_get_irq:
> +	free_irq(ctx->irq, ctx);
> +err_get_regs:
> +	iounmap(ctx->regs);
> +err_req_region:
> +	release_resource(ctx->regs_res);
> +	kfree(ctx->regs_res);
> +err_clk:
> +	clk_put(ctx->sclk_fimc_clk);
> +	clk_put(ctx->fimc_clk);
> +	clk_put(ctx->wb_clk);
> +	clk_put(ctx->wb_b_clk);
> +err_ctx:
> +	kfree(ctx);
> +	return ret;
> +}
> +
> +static int __devexit fimc_remove(struct platform_device *pdev)
> +{
> +	struct device *dev = &pdev->dev;
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +	struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
> +
> +	kfree(ippdrv->prop_list);
> +	exynos_drm_ippdrv_unregister(ippdrv);
> +
> +	pm_runtime_set_suspended(dev);
> +	pm_runtime_disable(dev);
> +
> +	free_irq(ctx->irq, ctx);
> +	iounmap(ctx->regs);
> +	release_resource(ctx->regs_res);
> +	kfree(ctx->regs_res);
> +
> +	clk_put(ctx->sclk_fimc_clk);
> +	clk_put(ctx->fimc_clk);
> +	clk_put(ctx->wb_clk);
> +	clk_put(ctx->wb_b_clk);
> +
> +	kfree(ctx);
> +
> +	return 0;
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int fimc_suspend(struct device *dev)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +
> +	DRM_DEBUG_KMS("%s:id[%d]\n", __func__, ctx->id);
> +	if (pm_runtime_suspended(dev))
> +		return 0;
> +	/* ToDo */
> +	return fimc_power_on(ctx, false);
> +}
> +
> +static int fimc_resume(struct device *dev)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +
> +	DRM_DEBUG_KMS("%s:id[%d]\n", __func__, ctx->id);
> +	if (!pm_runtime_suspended(dev))
> +		return fimc_power_on(ctx, true);
> +	/* ToDo */
> +	return 0;
> +}
> +#endif
> +
> +#ifdef CONFIG_PM_RUNTIME
> +static int fimc_runtime_suspend(struct device *dev)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +
> +	DRM_DEBUG_KMS("%s:id[%d]\n", __func__, ctx->id);
> +	/* ToDo */
> +	return  fimc_power_on(ctx, false);
> +}
> +
> +static int fimc_runtime_resume(struct device *dev)
> +{
> +	struct fimc_context *ctx = get_fimc_context(dev);
> +
> +	DRM_DEBUG_KMS("%s:id[%d]\n", __func__, ctx->id);
> +	/* ToDo */
> +	return  fimc_power_on(ctx, true);
> +}
> +#endif
> +
> +static const struct dev_pm_ops fimc_pm_ops = {
> +	SET_SYSTEM_SLEEP_PM_OPS(fimc_suspend, fimc_resume)
> +	SET_RUNTIME_PM_OPS(fimc_runtime_suspend, fimc_runtime_resume, NULL)
> +};
> +
> +/* ToDo: need to check use case platform_device_id */
> +struct platform_driver fimc_driver = {
> +	.probe		= fimc_probe,
> +	.remove		= __devexit_p(fimc_remove),
> +	.driver		= {
> +		.name	= "exynos-drm-fimc",
> +		.owner	= THIS_MODULE,
> +		.pm	= &fimc_pm_ops,
> +	},
> +};
> +
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.h
> b/drivers/gpu/drm/exynos/exynos_drm_fimc.h
> new file mode 100644
> index 0000000..b80e773
> --- /dev/null
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.h
> @@ -0,0 +1,35 @@
> +/*
> + * Copyright (c) 2012 Samsung Electronics Co., Ltd.
> + *
> + * Authors:
> + *	Eunchul Kim <chulspro.kim@xxxxxxxxxxx>
> + *	Jinyoung Jeon <jy0.jeon@xxxxxxxxxxx>
> + *	Sangmin Lee <lsmin.lee@xxxxxxxxxxx>
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining
> a
> + * copy of this software and associated documentation files (the
> "Software"),
> + * to deal in the Software without restriction, including without
> limitation
> + * the rights to use, copy, modify, merge, publish, distribute,
> sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the
> next
> + * paragraph) shall be included in all copies or substantial portions of
> the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT
> SHALL
> + * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES
> OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +#ifndef _EXYNOS_DRM_FIMC_H_
> +#define _EXYNOS_DRM_FIMC_H_
> +
> +/* ToDo */
> +
> +#endif /* _EXYNOS_DRM_FIMC_H_ */
> +
> diff --git a/drivers/gpu/drm/exynos/regs-fimc.h
> b/drivers/gpu/drm/exynos/regs-fimc.h
> new file mode 100644
> index 0000000..b4f9ca1
> --- /dev/null
> +++ b/drivers/gpu/drm/exynos/regs-fimc.h
> @@ -0,0 +1,669 @@
> +/* drivers/gpu/drm/exynos/regs-fimc.h
> + *
> + * Copyright (c) 2012 Samsung Electronics Co., Ltd.
> + *		http://www.samsung.com/
> + *
> + * Register definition file for Samsung Camera Interface (FIMC) 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_FIMC_H
> +#define EXYNOS_REGS_FIMC_H
> +
> +/*
> + * Register part
> +*/
> +/* Input source format */
> +#define EXYNOS_CISRCFMT		(0x00)
> +/* Window offset */
> +#define EXYNOS_CIWDOFST		(0x04)
> +/* Global control */
> +#define EXYNOS_CIGCTRL		(0x08)
> +/* Window offset 2 */
> +#define EXYNOS_CIWDOFST2	(0x14)
> +/* Y 1st frame start address for output DMA */
> +#define EXYNOS_CIOYSA1		(0x18)
> +/* Y 2nd frame start address for output DMA */
> +#define EXYNOS_CIOYSA2		(0x1c)
> +/* Y 3rd frame start address for output DMA */
> +#define EXYNOS_CIOYSA3		(0x20)
> +/* Y 4th frame start address for output DMA */
> +#define EXYNOS_CIOYSA4		(0x24)
> +/* Cb 1st frame start address for output DMA */
> +#define EXYNOS_CIOCBSA1		(0x28)
> +/* Cb 2nd frame start address for output DMA */
> +#define EXYNOS_CIOCBSA2		(0x2c)
> +/* Cb 3rd frame start address for output DMA */
> +#define EXYNOS_CIOCBSA3		(0x30)
> +/* Cb 4th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA4		(0x34)
> +/* Cr 1st frame start address for output DMA */
> +#define EXYNOS_CIOCRSA1		(0x38)
> +/* Cr 2nd frame start address for output DMA */
> +#define EXYNOS_CIOCRSA2		(0x3c)
> +/* Cr 3rd frame start address for output DMA */
> +#define EXYNOS_CIOCRSA3		(0x40)
> +/* Cr 4th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA4		(0x44)
> +/* Target image format */
> +#define EXYNOS_CITRGFMT		(0x48)
> +/* Output DMA control */
> +#define EXYNOS_CIOCTRL		(0x4c)
> +/* Pre-scaler control 1 */
> +#define EXYNOS_CISCPRERATIO	(0x50)
> +/* Pre-scaler control 2 */
> +#define EXYNOS_CISCPREDST		(0x54)
> +/* Main scaler control */
> +#define EXYNOS_CISCCTRL		(0x58)
> +/* Target area */
> +#define EXYNOS_CITAREA		(0x5c)
> +/* Status */
> +#define EXYNOS_CISTATUS		(0x64)
> +/* Status2 */
> +#define EXYNOS_CISTATUS2		(0x68)
> +/* Image capture enable command */
> +#define EXYNOS_CIIMGCPT		(0xc0)
> +/* Capture sequence */
> +#define EXYNOS_CICPTSEQ		(0xc4)
> +/* Image effects */
> +#define EXYNOS_CIIMGEFF		(0xd0)
> +/* Y frame start address for input DMA */
> +#define EXYNOS_CIIYSA0		(0xd4)
> +/* Cb frame start address for input DMA */
> +#define EXYNOS_CIICBSA0		(0xd8)
> +/* Cr frame start address for input DMA */
> +#define EXYNOS_CIICRSA0		(0xdc)
> +/* Input DMA Y Line Skip */
> +#define EXYNOS_CIILINESKIP_Y	(0xec)
> +/* Input DMA Cb Line Skip */
> +#define EXYNOS_CIILINESKIP_CB	(0xf0)
> +/* Input DMA Cr Line Skip */
> +#define EXYNOS_CIILINESKIP_CR	(0xf4)
> +/* Real input DMA image size */
> +#define EXYNOS_CIREAL_ISIZE	(0xf8)
> +/* Input DMA control */
> +#define EXYNOS_MSCTRL		(0xfc)
> +/* Y frame start address for input DMA */
> +#define EXYNOS_CIIYSA1		(0x144)
> +/* Cb frame start address for input DMA */
> +#define EXYNOS_CIICBSA1		(0x148)
> +/* Cr frame start address for input DMA */
> +#define EXYNOS_CIICRSA1		(0x14c)
> +/* Output DMA Y offset */
> +#define EXYNOS_CIOYOFF		(0x168)
> +/* Output DMA CB offset */
> +#define EXYNOS_CIOCBOFF		(0x16c)
> +/* Output DMA CR offset */
> +#define EXYNOS_CIOCROFF		(0x170)
> +/* Input DMA Y offset */
> +#define EXYNOS_CIIYOFF		(0x174)
> +/* Input DMA CB offset */
> +#define EXYNOS_CIICBOFF		(0x178)
> +/* Input DMA CR offset */
> +#define EXYNOS_CIICROFF		(0x17c)
> +/* Input DMA original image size */
> +#define EXYNOS_ORGISIZE		(0x180)
> +/* Output DMA original image size */
> +#define EXYNOS_ORGOSIZE		(0x184)
> +/* Real output DMA image size */
> +#define EXYNOS_CIEXTEN		(0x188)
> +/* DMA parameter */
> +#define EXYNOS_CIDMAPARAM		(0x18c)
> +/* MIPI CSI image format */
> +#define EXYNOS_CSIIMGFMT		(0x194)
> +/* FIMC Clock Source Select */
> +#define EXYNOS_MISC_FIMC		(0x198)
> +
> +/* Add for FIMC v5.1 */
> +/* Output Frame Buffer Sequence */
> +#define EXYNOS_CIFCNTSEQ		(0x1fc)
> +/* Y 5th frame start address for output DMA */
> +#define EXYNOS_CIOYSA5		(0x200)
> +/* Y 6th frame start address for output DMA */
> +#define EXYNOS_CIOYSA6		(0x204)
> +/* Y 7th frame start address for output DMA */
> +#define EXYNOS_CIOYSA7		(0x208)
> +/* Y 8th frame start address for output DMA */
> +#define EXYNOS_CIOYSA8		(0x20c)
> +/* Y 9th frame start address for output DMA */
> +#define EXYNOS_CIOYSA9		(0x210)
> +/* Y 10th frame start address for output DMA */
> +#define EXYNOS_CIOYSA10		(0x214)
> +/* Y 11th frame start address for output DMA */
> +#define EXYNOS_CIOYSA11		(0x218)
> +/* Y 12th frame start address for output DMA */
> +#define EXYNOS_CIOYSA12		(0x21c)
> +/* Y 13th frame start address for output DMA */
> +#define EXYNOS_CIOYSA13		(0x220)
> +/* Y 14th frame start address for output DMA */
> +#define EXYNOS_CIOYSA14		(0x224)
> +/* Y 15th frame start address for output DMA */
> +#define EXYNOS_CIOYSA15		(0x228)
> +/* Y 16th frame start address for output DMA */
> +#define EXYNOS_CIOYSA16		(0x22c)
> +/* Y 17th frame start address for output DMA */
> +#define EXYNOS_CIOYSA17		(0x230)
> +/* Y 18th frame start address for output DMA */
> +#define EXYNOS_CIOYSA18		(0x234)
> +/* Y 19th frame start address for output DMA */
> +#define EXYNOS_CIOYSA19		(0x238)
> +/* Y 20th frame start address for output DMA */
> +#define EXYNOS_CIOYSA20		(0x23c)
> +/* Y 21th frame start address for output DMA */
> +#define EXYNOS_CIOYSA21		(0x240)
> +/* Y 22th frame start address for output DMA */
> +#define EXYNOS_CIOYSA22		(0x244)
> +/* Y 23th frame start address for output DMA */
> +#define EXYNOS_CIOYSA23		(0x248)
> +/* Y 24th frame start address for output DMA */
> +#define EXYNOS_CIOYSA24		(0x24c)
> +/* Y 25th frame start address for output DMA */
> +#define EXYNOS_CIOYSA25		(0x250)
> +/* Y 26th frame start address for output DMA */
> +#define EXYNOS_CIOYSA26		(0x254)
> +/* Y 27th frame start address for output DMA */
> +#define EXYNOS_CIOYSA27		(0x258)
> +/* Y 28th frame start address for output DMA */
> +#define EXYNOS_CIOYSA28		(0x25c)
> +/* Y 29th frame start address for output DMA */
> +#define EXYNOS_CIOYSA29		(0x260)
> +/* Y 30th frame start address for output DMA */
> +#define EXYNOS_CIOYSA30		(0x264)
> +/* Y 31th frame start address for output DMA */
> +#define EXYNOS_CIOYSA31		(0x268)
> +/* Y 32th frame start address for output DMA */
> +#define EXYNOS_CIOYSA32		(0x26c)
> +
> +/* CB 5th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA5		(0x270)
> +/* CB 6th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA6		(0x274)
> +/* CB 7th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA7		(0x278)
> +/* CB 8th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA8		(0x27c)
> +/* CB 9th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA9		(0x280)
> +/* CB 10th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA10		(0x284)
> +/* CB 11th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA11		(0x288)
> +/* CB 12th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA12		(0x28c)
> +/* CB 13th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA13		(0x290)
> +/* CB 14th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA14		(0x294)
> +/* CB 15th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA15		(0x298)
> +/* CB 16th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA16		(0x29c)
> +/* CB 17th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA17		(0x2a0)
> +/* CB 18th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA18		(0x2a4)
> +/* CB 19th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA19		(0x2a8)
> +/* CB 20th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA20		(0x2ac)
> +/* CB 21th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA21		(0x2b0)
> +/* CB 22th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA22		(0x2b4)
> +/* CB 23th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA23		(0x2b8)
> +/* CB 24th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA24		(0x2bc)
> +/* CB 25th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA25		(0x2c0)
> +/* CB 26th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA26		(0x2c4)
> +/* CB 27th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA27		(0x2c8)
> +/* CB 28th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA28		(0x2cc)
> +/* CB 29th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA29		(0x2d0)
> +/* CB 30th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA30		(0x2d4)
> +/* CB 31th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA31		(0x2d8)
> +/* CB 32th frame start address for output DMA */
> +#define EXYNOS_CIOCBSA32		(0x2dc)
> +
> +/* CR 5th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA5		(0x2e0)
> +/* CR 6th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA6		(0x2e4)
> +/* CR 7th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA7		(0x2e8)
> +/* CR 8th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA8		(0x2ec)
> +/* CR 9th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA9		(0x2f0)
> +/* CR 10th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA10		(0x2f4)
> +/* CR 11th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA11		(0x2f8)
> +/* CR 12th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA12		(0x2fc)
> +/* CR 13th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA13		(0x300)
> +/* CR 14th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA14		(0x304)
> +/* CR 15th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA15		(0x308)
> +/* CR 16th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA16		(0x30c)
> +/* CR 17th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA17		(0x310)
> +/* CR 18th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA18		(0x314)
> +/* CR 19th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA19		(0x318)
> +/* CR 20th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA20		(0x31c)
> +/* CR 21th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA21		(0x320)
> +/* CR 22th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA22		(0x324)
> +/* CR 23th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA23		(0x328)
> +/* CR 24th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA24		(0x32c)
> +/* CR 25th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA25		(0x330)
> +/* CR 26th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA26		(0x334)
> +/* CR 27th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA27		(0x338)
> +/* CR 28th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA28		(0x33c)
> +/* CR 29th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA29		(0x340)
> +/* CR 30th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA30		(0x344)
> +/* CR 31th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA31		(0x348)
> +/* CR 32th frame start address for output DMA */
> +#define EXYNOS_CIOCRSA32		(0x34c)
> +
> +/*
> + * Macro part
> +*/
> +/* frame start address 1 ~ 4, 5 ~ 32 */
> +/* Number of Default PingPong Memory */
> +#define DEF_PP		4
> +#define EXYNOS_CIOYSA(__x)		\
> +	(((__x) < DEF_PP) ?	\
> +	 (EXYNOS_CIOYSA1  + (__x) * 4) : \
> +	(EXYNOS_CIOYSA5  + ((__x) - DEF_PP) * 4))
> +#define EXYNOS_CIOCBSA(__x)	\
> +	(((__x) < DEF_PP) ?	\
> +	 (EXYNOS_CIOCBSA1 + (__x) * 4) : \
> +	(EXYNOS_CIOCBSA5 + ((__x) - DEF_PP) * 4))
> +#define EXYNOS_CIOCRSA(__x)	\
> +	(((__x) < DEF_PP) ?	\
> +	 (EXYNOS_CIOCRSA1 + (__x) * 4) : \
> +	(EXYNOS_CIOCRSA5 + ((__x) - DEF_PP) * 4))
> +/* Number of Default PingPong Memory */
> +#define DEF_IPP		1
> +#define EXYNOS_CIIYSA(__x)		\
> +	(((__x) < DEF_IPP) ?	\
> +	 (EXYNOS_CIIYSA0) : (EXYNOS_CIIYSA1))
> +#define EXYNOS_CIICBSA(__x)	\
> +	(((__x) < DEF_IPP) ?	\
> +	 (EXYNOS_CIICBSA0) : (EXYNOS_CIICBSA1))
> +#define EXYNOS_CIICRSA(__x)	\
> +	(((__x) < DEF_IPP) ?	\
> +	 (EXYNOS_CIICRSA0) : (EXYNOS_CIICRSA1))
> +
> +#define EXYNOS_CISRCFMT_SOURCEHSIZE(x)		((x) << 16)
> +#define EXYNOS_CISRCFMT_SOURCEVSIZE(x)		((x) << 0)
> +
> +#define EXYNOS_CIWDOFST_WINHOROFST(x)		((x) << 16)
> +#define EXYNOS_CIWDOFST_WINVEROFST(x)		((x) << 0)
> +
> +#define EXYNOS_CIWDOFST2_WINHOROFST2(x)		((x) << 16)
> +#define EXYNOS_CIWDOFST2_WINVEROFST2(x)		((x) << 0)
> +
> +#define EXYNOS_CITRGFMT_TARGETHSIZE(x)		(((x) & 0x1fff) <<
16)
> +#define EXYNOS_CITRGFMT_TARGETVSIZE(x)		(((x) & 0x1fff) <<
0)
> +
> +#define EXYNOS_CISCPRERATIO_SHFACTOR(x)		((x) << 28)
> +#define EXYNOS_CISCPRERATIO_PREHORRATIO(x)		((x) << 16)
> +#define EXYNOS_CISCPRERATIO_PREVERRATIO(x)		((x) << 0)
> +
> +#define EXYNOS_CISCPREDST_PREDSTWIDTH(x)		((x) << 16)
> +#define EXYNOS_CISCPREDST_PREDSTHEIGHT(x)		((x) << 0)
> +
> +#define EXYNOS_CISCCTRL_MAINHORRATIO(x)		((x) << 16)
> +#define EXYNOS_CISCCTRL_MAINVERRATIO(x)		((x) << 0)
> +
> +#define EXYNOS_CITAREA_TARGET_AREA(x)		((x) << 0)
> +
> +#define EXYNOS_CISTATUS_GET_FRAME_COUNT(x)		(((x) >> 26) & 0x3)
> +#define EXYNOS_CISTATUS_GET_FRAME_END(x)		(((x) >> 17) & 0x1)
> +#define EXYNOS_CISTATUS_GET_LAST_CAPTURE_END(x)	(((x) >> 16) & 0x1)
> +#define EXYNOS_CISTATUS_GET_LCD_STATUS(x)		(((x) >> 9) & 0x1)
> +#define EXYNOS_CISTATUS_GET_ENVID_STATUS(x)	(((x) >> 8) & 0x1)
> +
> +#define EXYNOS_CISTATUS2_GET_FRAMECOUNT_BEFORE(x)	(((x) >> 7) & 0x3f)
> +#define EXYNOS_CISTATUS2_GET_FRAMECOUNT_PRESENT(x)	((x) & 0x3f)
> +
> +#define EXYNOS_CIIMGEFF_FIN(x)			((x & 0x7) << 26)
> +#define EXYNOS_CIIMGEFF_PAT_CB(x)			((x) << 13)
> +#define EXYNOS_CIIMGEFF_PAT_CR(x)			((x) << 0)
> +
> +#define EXYNOS_CIILINESKIP(x)			(((x) & 0xf) << 24)
> +
> +#define EXYNOS_CIREAL_ISIZE_HEIGHT(x)		((x) << 16)
> +#define EXYNOS_CIREAL_ISIZE_WIDTH(x)		((x) << 0)
> +
> +#define EXYNOS_MSCTRL_SUCCESSIVE_COUNT(x)		((x) << 24)
> +#define EXYNOS_MSCTRL_GET_INDMA_STATUS(x)		((x) & 0x1)
> +
> +#define EXYNOS_CIOYOFF_VERTICAL(x)			((x) << 16)
> +#define EXYNOS_CIOYOFF_HORIZONTAL(x)		((x) << 0)
> +
> +#define EXYNOS_CIOCBOFF_VERTICAL(x)		((x) << 16)
> +#define EXYNOS_CIOCBOFF_HORIZONTAL(x)		((x) << 0)
> +
> +#define EXYNOS_CIOCROFF_VERTICAL(x)		((x) << 16)
> +#define EXYNOS_CIOCROFF_HORIZONTAL(x)		((x) << 0)
> +
> +#define EXYNOS_CIIYOFF_VERTICAL(x)			((x) << 16)
> +#define EXYNOS_CIIYOFF_HORIZONTAL(x)		((x) << 0)
> +
> +#define EXYNOS_CIICBOFF_VERTICAL(x)		((x) << 16)
> +#define EXYNOS_CIICBOFF_HORIZONTAL(x)		((x) << 0)
> +
> +#define EXYNOS_CIICROFF_VERTICAL(x)		((x) << 16)
> +#define EXYNOS_CIICROFF_HORIZONTAL(x)		((x) << 0)
> +
> +#define EXYNOS_ORGISIZE_VERTICAL(x)		((x) << 16)
> +#define EXYNOS_ORGISIZE_HORIZONTAL(x)		((x) << 0)
> +
> +#define EXYNOS_ORGOSIZE_VERTICAL(x)		((x) << 16)
> +#define EXYNOS_ORGOSIZE_HORIZONTAL(x)		((x) << 0)
> +
> +#define EXYNOS_CIEXTEN_TARGETH_EXT(x)		((((x) & 0x2000) >>
13) <<
> 26)
> +#define EXYNOS_CIEXTEN_TARGETV_EXT(x)		((((x) & 0x2000) >>
13) <<
> 24)
> +#define EXYNOS_CIEXTEN_MAINHORRATIO_EXT(x)		(((x) & 0x3F) << 10)
> +#define EXYNOS_CIEXTEN_MAINVERRATIO_EXT(x)		((x) & 0x3F)
> +
> +/*
> + * Bit definition part
> +*/
> +/* Source format register */
> +#define EXYNOS_CISRCFMT_ITU601_8BIT		(1 << 31)
> +#define EXYNOS_CISRCFMT_ITU656_8BIT		(0 << 31)
> +#define EXYNOS_CISRCFMT_ITU601_16BIT		(1 << 29)
> +#define EXYNOS_CISRCFMT_ORDER422_YCBYCR		(0 << 14)
> +#define EXYNOS_CISRCFMT_ORDER422_YCRYCB		(1 << 14)
> +#define EXYNOS_CISRCFMT_ORDER422_CBYCRY		(2 << 14)
> +#define EXYNOS_CISRCFMT_ORDER422_CRYCBY		(3 << 14)
> +/* ITU601 16bit only */
> +#define EXYNOS_CISRCFMT_ORDER422_Y4CBCRCBCR	(0 << 14)
> +/* ITU601 16bit only */
> +#define EXYNOS_CISRCFMT_ORDER422_Y4CRCBCRCB	(1 << 14)
> +
> +/* Window offset register */
> +#define EXYNOS_CIWDOFST_WINOFSEN			(1 << 31)
> +#define EXYNOS_CIWDOFST_CLROVFIY			(1 << 30)
> +#define EXYNOS_CIWDOFST_CLROVRLB			(1 << 29)
> +#define EXYNOS_CIWDOFST_WINHOROFST_MASK		(0x7ff << 16)
> +#define EXYNOS_CIWDOFST_CLROVFICB			(1 << 15)
> +#define EXYNOS_CIWDOFST_CLROVFICR			(1 << 14)
> +#define EXYNOS_CIWDOFST_WINVEROFST_MASK		(0xfff << 0)
> +
> +/* Global control register */
> +#define EXYNOS_CIGCTRL_SWRST			(1 << 31)
> +#define EXYNOS_CIGCTRL_CAMRST_A			(1 << 30)
> +#define EXYNOS_CIGCTRL_SELCAM_ITU_B		(0 << 29)
> +#define EXYNOS_CIGCTRL_SELCAM_ITU_A		(1 << 29)
> +#define EXYNOS_CIGCTRL_SELCAM_ITU_MASK		(1 << 29)
> +#define EXYNOS_CIGCTRL_TESTPATTERN_NORMAL		(0 << 27)
> +#define EXYNOS_CIGCTRL_TESTPATTERN_COLOR_BAR	(1 << 27)
> +#define EXYNOS_CIGCTRL_TESTPATTERN_HOR_INC		(2 << 27)
> +#define EXYNOS_CIGCTRL_TESTPATTERN_VER_INC		(3 << 27)
> +#define EXYNOS_CIGCTRL_TESTPATTERN_MASK		(3 << 27)
> +#define EXYNOS_CIGCTRL_TESTPATTERN_SHIFT		(27)
> +#define EXYNOS_CIGCTRL_INVPOLPCLK			(1 << 26)
> +#define EXYNOS_CIGCTRL_INVPOLVSYNC			(1 << 25)
> +#define EXYNOS_CIGCTRL_INVPOLHREF			(1 << 24)
> +#define EXYNOS_CIGCTRL_IRQ_OVFEN			(1 << 22)
> +#define EXYNOS_CIGCTRL_HREF_MASK			(1 << 21)
> +#define EXYNOS_CIGCTRL_IRQ_EDGE			(0 << 20)
> +#define EXYNOS_CIGCTRL_IRQ_LEVEL			(1 << 20)
> +#define EXYNOS_CIGCTRL_IRQ_CLR			(1 << 19)
> +#define EXYNOS_CIGCTRL_IRQ_END_DISABLE		(1 << 18)
> +#define EXYNOS_CIGCTRL_IRQ_DISABLE			(0 << 16)
> +#define EXYNOS_CIGCTRL_IRQ_ENABLE			(1 << 16)
> +#define EXYNOS_CIGCTRL_SHADOW_DISABLE		(1 << 12)
> +#define EXYNOS_CIGCTRL_CAM_JPEG			(1 << 8)
> +#define EXYNOS_CIGCTRL_SELCAM_MIPI_B		(0 << 7)
> +#define EXYNOS_CIGCTRL_SELCAM_MIPI_A		(1 << 7)
> +#define EXYNOS_CIGCTRL_SELCAM_MIPI_MASK		(1 << 7)
> +#define EXYNOS_CIGCTRL_SELWB_CAMIF_CAMERA	(0 << 6)
> +#define EXYNOS_CIGCTRL_SELWB_CAMIF_WRITEBACK	(1 << 6)
> +#define EXYNOS_CIGCTRL_SELWRITEBACK_MASK		(1 << 10)
> +#define EXYNOS_CIGCTRL_SELWRITEBACK_A		(1 << 10)
> +#define EXYNOS_CIGCTRL_SELWRITEBACK_B		(0 << 10)
> +#define EXYNOS_CIGCTRL_SELWB_CAMIF_MASK		(1 << 6)
> +#define EXYNOS_CIGCTRL_CSC_ITU601			(0 << 5)
> +#define EXYNOS_CIGCTRL_CSC_ITU709			(1 << 5)
> +#define EXYNOS_CIGCTRL_CSC_MASK			(1 << 5)
> +#define EXYNOS_CIGCTRL_INVPOLHSYNC			(1 << 4)
> +#define EXYNOS_CIGCTRL_SELCAM_FIMC_ITU		(0 << 3)
> +#define EXYNOS_CIGCTRL_SELCAM_FIMC_MIPI		(1 << 3)
> +#define EXYNOS_CIGCTRL_SELCAM_FIMC_MASK		(1 << 3)
> +#define EXYNOS_CIGCTRL_PROGRESSIVE			(0 << 0)
> +#define EXYNOS_CIGCTRL_INTERLACE			(1 << 0)
> +
> +/* Window offset2 register */
> +#define EXYNOS_CIWDOFST_WINHOROFST2_MASK		(0xfff << 16)
> +#define EXYNOS_CIWDOFST_WINVEROFST2_MASK		(0xfff << 16)
> +
> +/* Target format register */
> +#define EXYNOS_CITRGFMT_INROT90_CLOCKWISE		(1 << 31)
> +#define EXYNOS_CITRGFMT_OUTFORMAT_YCBCR420		(0 << 29)
> +#define EXYNOS_CITRGFMT_OUTFORMAT_YCBCR422		(1 << 29)
> +#define EXYNOS_CITRGFMT_OUTFORMAT_YCBCR422_1PLANE	(2 << 29)
> +#define EXYNOS_CITRGFMT_OUTFORMAT_RGB		(3 << 29)
> +#define EXYNOS_CITRGFMT_OUTFORMAT_MASK		(3 << 29)
> +#define EXYNOS_CITRGFMT_FLIP_SHIFT			(14)
> +#define EXYNOS_CITRGFMT_FLIP_NORMAL		(0 << 14)
> +#define EXYNOS_CITRGFMT_FLIP_X_MIRROR		(1 << 14)
> +#define EXYNOS_CITRGFMT_FLIP_Y_MIRROR		(2 << 14)
> +#define EXYNOS_CITRGFMT_FLIP_180			(3 << 14)
> +#define EXYNOS_CITRGFMT_FLIP_MASK			(3 << 14)
> +#define EXYNOS_CITRGFMT_OUTROT90_CLOCKWISE		(1 << 13)
> +#define EXYNOS_CITRGFMT_TARGETV_MASK		(0x1fff << 0)
> +#define EXYNOS_CITRGFMT_TARGETH_MASK		(0x1fff << 16)
> +
> +/* Output DMA control register */
> +#define EXYNOS_CIOCTRL_WEAVE_OUT			(1 << 31)
> +#define EXYNOS_CIOCTRL_WEAVE_MASK			(1 << 31)
> +#define EXYNOS_CIOCTRL_LASTENDEN			(1 << 30)
> +#define EXYNOS_CIOCTRL_ORDER2P_LSB_CBCR		(0 << 24)
> +#define EXYNOS_CIOCTRL_ORDER2P_LSB_CRCB		(1 << 24)
> +#define EXYNOS_CIOCTRL_ORDER2P_MSB_CRCB		(2 << 24)
> +#define EXYNOS_CIOCTRL_ORDER2P_MSB_CBCR		(3 << 24)
> +#define EXYNOS_CIOCTRL_ORDER2P_SHIFT		(24)
> +#define EXYNOS_CIOCTRL_ORDER2P_MASK		(3 << 24)
> +#define EXYNOS_CIOCTRL_YCBCR_3PLANE		(0 << 3)
> +#define EXYNOS_CIOCTRL_YCBCR_2PLANE		(1 << 3)
> +#define EXYNOS_CIOCTRL_YCBCR_PLANE_MASK		(1 << 3)
> +#define EXYNOS_CIOCTRL_LASTIRQ_ENABLE		(1 << 2)
> +#define EXYNOS_CIOCTRL_ALPHA_OUT			(0xff << 4)
> +#define EXYNOS_CIOCTRL_ORDER422_YCBYCR		(0 << 0)
> +#define EXYNOS_CIOCTRL_ORDER422_YCRYCB		(1 << 0)
> +#define EXYNOS_CIOCTRL_ORDER422_CBYCRY		(2 << 0)
> +#define EXYNOS_CIOCTRL_ORDER422_CRYCBY		(3 << 0)
> +#define EXYNOS_CIOCTRL_ORDER422_MASK		(3 << 0)
> +
> +/* Main scaler control register */
> +#define EXYNOS_CISCCTRL_SCALERBYPASS		(1 << 31)
> +#define EXYNOS_CISCCTRL_SCALEUP_H			(1 << 30)
> +#define EXYNOS_CISCCTRL_SCALEUP_V			(1 << 29)
> +#define EXYNOS_CISCCTRL_CSCR2Y_NARROW		(0 << 28)
> +#define EXYNOS_CISCCTRL_CSCR2Y_WIDE		(1 << 28)
> +#define EXYNOS_CISCCTRL_CSCY2R_NARROW		(0 << 27)
> +#define EXYNOS_CISCCTRL_CSCY2R_WIDE		(1 << 27)
> +#define EXYNOS_CISCCTRL_LCDPATHEN_FIFO		(1 << 26)
> +#define EXYNOS_CISCCTRL_PROGRESSIVE		(0 << 25)
> +#define EXYNOS_CISCCTRL_INTERLACE			(1 << 25)
> +#define EXYNOS_CISCCTRL_SCAN_MASK			(1 << 25)
> +#define EXYNOS_CISCCTRL_SCALERSTART		(1 << 15)
> +#define EXYNOS_CISCCTRL_INRGB_FMT_RGB565		(0 << 13)
> +#define EXYNOS_CISCCTRL_INRGB_FMT_RGB666		(1 << 13)
> +#define EXYNOS_CISCCTRL_INRGB_FMT_RGB888		(2 << 13)
> +#define EXYNOS_CISCCTRL_INRGB_FMT_RGB_MASK		(3 << 13)
> +#define EXYNOS_CISCCTRL_OUTRGB_FMT_RGB565		(0 << 11)
> +#define EXYNOS_CISCCTRL_OUTRGB_FMT_RGB666		(1 << 11)
> +#define EXYNOS_CISCCTRL_OUTRGB_FMT_RGB888		(2 << 11)
> +#define EXYNOS_CISCCTRL_OUTRGB_FMT_RGB_MASK	(3 << 11)
> +#define EXYNOS_CISCCTRL_EXTRGB_NORMAL		(0 << 10)
> +#define EXYNOS_CISCCTRL_EXTRGB_EXTENSION		(1 << 10)
> +#define EXYNOS_CISCCTRL_ONE2ONE			(1 << 9)
> +#define EXYNOS_CISCCTRL_MAIN_V_RATIO_MASK		(0x1ff << 0)
> +#define EXYNOS_CISCCTRL_MAIN_H_RATIO_MASK		(0x1ff << 16)
> +
> +/* Status register */
> +#define EXYNOS_CISTATUS_OVFIY			(1 << 31)
> +#define EXYNOS_CISTATUS_OVFICB			(1 << 30)
> +#define EXYNOS_CISTATUS_OVFICR			(1 << 29)
> +#define EXYNOS_CISTATUS_VSYNC			(1 << 28)
> +#define EXYNOS_CISTATUS_SCALERSTART		(1 << 26)
> +#define EXYNOS_CISTATUS_WINOFSTEN			(1 << 25)
> +#define EXYNOS_CISTATUS_IMGCPTEN			(1 << 22)
> +#define EXYNOS_CISTATUS_IMGCPTENSC			(1 << 21)
> +#define EXYNOS_CISTATUS_VSYNC_A			(1 << 20)
> +#define EXYNOS_CISTATUS_VSYNC_B			(1 << 19)
> +#define EXYNOS_CISTATUS_OVRLB			(1 << 18)
> +#define EXYNOS_CISTATUS_FRAMEEND			(1 << 17)
> +#define EXYNOS_CISTATUS_LASTCAPTUREEND		(1 << 16)
> +#define EXYNOS_CISTATUS_VVALID_A			(1 << 15)
> +#define EXYNOS_CISTATUS_VVALID_B			(1 << 14)
> +
> +/* Image capture enable register */
> +#define EXYNOS_CIIMGCPT_IMGCPTEN			(1 << 31)
> +#define EXYNOS_CIIMGCPT_IMGCPTEN_SC		(1 << 30)
> +#define EXYNOS_CIIMGCPT_CPT_FREN_ENABLE		(1 << 25)
> +#define EXYNOS_CIIMGCPT_CPT_FRMOD_EN		(0 << 18)
> +#define EXYNOS_CIIMGCPT_CPT_FRMOD_CNT		(1 << 18)
> +
> +/* Image effects register */
> +#define EXYNOS_CIIMGEFF_IE_DISABLE			(0 << 30)
> +#define EXYNOS_CIIMGEFF_IE_ENABLE			(1 << 30)
> +#define EXYNOS_CIIMGEFF_IE_SC_BEFORE		(0 << 29)
> +#define EXYNOS_CIIMGEFF_IE_SC_AFTER		(1 << 29)
> +#define EXYNOS_CIIMGEFF_FIN_BYPASS			(0 << 26)
> +#define EXYNOS_CIIMGEFF_FIN_ARBITRARY		(1 << 26)
> +#define EXYNOS_CIIMGEFF_FIN_NEGATIVE		(2 << 26)
> +#define EXYNOS_CIIMGEFF_FIN_ARTFREEZE		(3 << 26)
> +#define EXYNOS_CIIMGEFF_FIN_EMBOSSING		(4 << 26)
> +#define EXYNOS_CIIMGEFF_FIN_SILHOUETTE		(5 << 26)
> +#define EXYNOS_CIIMGEFF_FIN_MASK			(7 << 26)
> +#define EXYNOS_CIIMGEFF_PAT_CBCR_MASK		((0xff < 13) | (0xff
< 0))
> +
> +/* Real input DMA size register */
> +#define EXYNOS_CIREAL_ISIZE_AUTOLOAD_ENABLE	(1 << 31)
> +#define EXYNOS_CIREAL_ISIZE_ADDR_CH_DISABLE	(1 << 30)
> +#define EXYNOS_CIREAL_ISIZE_HEIGHT_MASK		(0x3FFF << 16)
> +#define EXYNOS_CIREAL_ISIZE_WIDTH_MASK		(0x3FFF << 0)
> +
> +/* Input DMA control register */
> +#define EXYNOS_MSCTRL_FIELD_MASK			(1 << 31)
> +#define EXYNOS_MSCTRL_FIELD_WEAVE			(1 << 31)
> +#define EXYNOS_MSCTRL_FIELD_NORMAL			(0 << 31)
> +#define EXYNOS_MSCTRL_BURST_CNT			(24)
> +#define EXYNOS_MSCTRL_BURST_CNT_MASK		(0xf << 24)
> +#define EXYNOS_MSCTRL_ORDER2P_LSB_CBCR		(0 << 16)
> +#define EXYNOS_MSCTRL_ORDER2P_LSB_CRCB		(1 << 16)
> +#define EXYNOS_MSCTRL_ORDER2P_MSB_CRCB		(2 << 16)
> +#define EXYNOS_MSCTRL_ORDER2P_MSB_CBCR		(3 << 16)
> +#define EXYNOS_MSCTRL_ORDER2P_SHIFT		(16)
> +#define EXYNOS_MSCTRL_ORDER2P_SHIFT_MASK		(0x3 << 16)
> +#define EXYNOS_MSCTRL_C_INT_IN_3PLANE		(0 << 15)
> +#define EXYNOS_MSCTRL_C_INT_IN_2PLANE		(1 << 15)
> +#define EXYNOS_MSCTRL_FLIP_SHIFT			(13)
> +#define EXYNOS_MSCTRL_FLIP_NORMAL			(0 << 13)
> +#define EXYNOS_MSCTRL_FLIP_X_MIRROR		(1 << 13)
> +#define EXYNOS_MSCTRL_FLIP_Y_MIRROR		(2 << 13)
> +#define EXYNOS_MSCTRL_FLIP_180			(3 << 13)
> +#define EXYNOS_MSCTRL_FLIP_MASK			(3 << 13)
> +#define EXYNOS_MSCTRL_ORDER422_CRYCBY		(0 << 4)
> +#define EXYNOS_MSCTRL_ORDER422_YCRYCB		(1 << 4)
> +#define EXYNOS_MSCTRL_ORDER422_CBYCRY		(2 << 4)
> +#define EXYNOS_MSCTRL_ORDER422_YCBYCR		(3 << 4)
> +#define EXYNOS_MSCTRL_INPUT_EXTCAM			(0 << 3)
> +#define EXYNOS_MSCTRL_INPUT_MEMORY			(1 << 3)
> +#define EXYNOS_MSCTRL_INPUT_MASK			(1 << 3)
> +#define EXYNOS_MSCTRL_INFORMAT_YCBCR420		(0 << 1)
> +#define EXYNOS_MSCTRL_INFORMAT_YCBCR422		(1 << 1)
> +#define EXYNOS_MSCTRL_INFORMAT_YCBCR422_1PLANE	(2 << 1)
> +#define EXYNOS_MSCTRL_INFORMAT_RGB			(3 << 1)
> +#define EXYNOS_MSCTRL_ENVID			(1 << 0)
> +
> +/* DMA parameter register */
> +#define EXYNOS_CIDMAPARAM_R_MODE_LINEAR		(0 << 29)
> +#define EXYNOS_CIDMAPARAM_R_MODE_CONFTILE		(1 << 29)
> +#define EXYNOS_CIDMAPARAM_R_MODE_16X16		(2 << 29)
> +#define EXYNOS_CIDMAPARAM_R_MODE_64X32		(3 << 29)
> +#define EXYNOS_CIDMAPARAM_R_MODE_MASK		(3 << 29)
> +#define EXYNOS_CIDMAPARAM_R_TILE_HSIZE_64		(0 << 24)
> +#define EXYNOS_CIDMAPARAM_R_TILE_HSIZE_128		(1 << 24)
> +#define EXYNOS_CIDMAPARAM_R_TILE_HSIZE_256		(2 << 24)
> +#define EXYNOS_CIDMAPARAM_R_TILE_HSIZE_512		(3 << 24)
> +#define EXYNOS_CIDMAPARAM_R_TILE_HSIZE_1024	(4 << 24)
> +#define EXYNOS_CIDMAPARAM_R_TILE_HSIZE_2048	(5 << 24)
> +#define EXYNOS_CIDMAPARAM_R_TILE_HSIZE_4096	(6 << 24)
> +#define EXYNOS_CIDMAPARAM_R_TILE_VSIZE_1		(0 << 20)
> +#define EXYNOS_CIDMAPARAM_R_TILE_VSIZE_2		(1 << 20)
> +#define EXYNOS_CIDMAPARAM_R_TILE_VSIZE_4		(2 << 20)
> +#define EXYNOS_CIDMAPARAM_R_TILE_VSIZE_8		(3 << 20)
> +#define EXYNOS_CIDMAPARAM_R_TILE_VSIZE_16		(4 << 20)
> +#define EXYNOS_CIDMAPARAM_R_TILE_VSIZE_32		(5 << 20)
> +#define EXYNOS_CIDMAPARAM_W_MODE_LINEAR		(0 << 13)
> +#define EXYNOS_CIDMAPARAM_W_MODE_CONFTILE		(1 << 13)
> +#define EXYNOS_CIDMAPARAM_W_MODE_16X16		(2 << 13)
> +#define EXYNOS_CIDMAPARAM_W_MODE_64X32		(3 << 13)
> +#define EXYNOS_CIDMAPARAM_W_MODE_MASK		(3 << 13)
> +#define EXYNOS_CIDMAPARAM_W_TILE_HSIZE_64		(0 << 8)
> +#define EXYNOS_CIDMAPARAM_W_TILE_HSIZE_128		(1 << 8)
> +#define EXYNOS_CIDMAPARAM_W_TILE_HSIZE_256		(2 << 8)
> +#define EXYNOS_CIDMAPARAM_W_TILE_HSIZE_512		(3 << 8)
> +#define EXYNOS_CIDMAPARAM_W_TILE_HSIZE_1024	(4 << 8)
> +#define EXYNOS_CIDMAPARAM_W_TILE_HSIZE_2048	(5 << 8)
> +#define EXYNOS_CIDMAPARAM_W_TILE_HSIZE_4096	(6 << 8)
> +#define EXYNOS_CIDMAPARAM_W_TILE_VSIZE_1		(0 << 4)
> +#define EXYNOS_CIDMAPARAM_W_TILE_VSIZE_2		(1 << 4)
> +#define EXYNOS_CIDMAPARAM_W_TILE_VSIZE_4		(2 << 4)
> +#define EXYNOS_CIDMAPARAM_W_TILE_VSIZE_8		(3 << 4)
> +#define EXYNOS_CIDMAPARAM_W_TILE_VSIZE_16		(4 << 4)
> +#define EXYNOS_CIDMAPARAM_W_TILE_VSIZE_32		(5 << 4)
> +
> +/* Gathering Extension register */
> +#define EXYNOS_CIEXTEN_TARGETH_EXT_MASK		(1 << 26)
> +#define EXYNOS_CIEXTEN_TARGETV_EXT_MASK		(1 << 24)
> +#define EXYNOS_CIEXTEN_MAINHORRATIO_EXT_MASK	(0x3F << 10)
> +#define EXYNOS_CIEXTEN_MAINVERRATIO_EXT_MASK	(0x3F)
> +#define EXYNOS_CIEXTEN_YUV444_OUT			(1 << 22)
> +
> +/* FIMC Clock Source Select register */
> +#define EXYNOS_CLKSRC_HCLK				(0 << 1)
> +#define EXYNOS_CLKSRC_HCLK_MASK			(1 << 1)
> +#define EXYNOS_CLKSRC_SCLK				(1 << 1)
> +
> +/* SYSREG for FIMC writeback */
> +#define SYSREG_CAMERA_BLK			(S3C_VA_SYS + 0x0218)
> +#define SYSREG_ISP_BLK				(S3C_VA_SYS +
0x020c)
> +#define SYSREG_FIMD0WB_DEST_MASK	(0x3 << 23)
> +#define SYSREG_FIMD0WB_DEST_SHIFT	23
> +
> +#endif /* EXYNOS_REGS_FIMC_H */
> diff --git a/include/drm/exynos_drm.h b/include/drm/exynos_drm.h
> index 3c13a3a..4d55b1f 100644
> --- a/include/drm/exynos_drm.h
> +++ b/include/drm/exynos_drm.h
> @@ -85,4 +85,38 @@ struct exynos_drm_hdmi_pdata {
>  	int (*get_hpd)(void);
>  };
> 
> +/**
> + * Platform Specific Structure for DRM based FIMC.
> + *
> + * @inv_pclk: if set 1. invert pixel clock
> + * @inv_vsync: if set 1. invert vsync signal for wb
> + * @inv_href: if set 1. invert href signal
> + * @inv_hsync: if set 1. invert hsync signal for wb
> + */
> +struct exynos_drm_fimc_pol {
> +	unsigned int inv_pclk;
> +	unsigned int inv_vsync;
> +	unsigned int inv_href;
> +	unsigned int inv_hsync;
> +};
> +
> +/* definition of chipset version */
> +enum exynos_drm_fimc_ver {
> +	FIMC_EXYNOS_4210,
> +	FIMC_EXYNOS_4212,
> +	FIMC_EXYNOS_4412,
> +	FIMC_EXYNOS_4412_R2,
> +};
> +
> +/**
> + * Platform Specific Structure for DRM based FIMC.
> + *
> + * @pol: current hardware block polarity settings.
> + * @ver: current hardware block version.
> + */
> +struct exynos_drm_fimc_pdata {
> +	struct exynos_drm_fimc_pol pol;
> +	enum exynos_drm_fimc_ver ver;
> +};
> +
>  #endif	/* _EXYNOS_DRM_H_ */
> --
> 1.7.0.4

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