/* linux/drivers/media/video/samsung/fimc_capture.c
 *
 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
 *	http://www.samsung.com/
 *
 * V4L2 Capture device support 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.
*/

#include <linux/slab.h>
#include <linux/bootmem.h>
#include <linux/string.h>
#include <linux/platform_device.h>
#include <linux/videodev2.h>
#include <linux/videodev2_exynos_media.h>
#include <linux/videodev2_exynos_camera.h>
#include <linux/clk.h>
#include <linux/mm.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/uaccess.h>
#include <plat/media.h>
#include <plat/clock.h>
#include <plat/fimc.h>
#include <linux/delay.h>

#include <asm/cacheflush.h>
#include <linux/pm_qos_params.h>

#include "fimc.h"

static struct pm_qos_request_list bus_qos_pm_qos_req;

static const struct v4l2_fmtdesc capture_fmts[] = {
	{
		.index		= 0,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PACKED,
		.description	= "RGB-5-6-5",
		.pixelformat	= V4L2_PIX_FMT_RGB565,
	}, {
		.index		= 1,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PACKED,
		.description	= "RGB-8-8-8, unpacked 24 bpp",
		.pixelformat	= V4L2_PIX_FMT_RGB32,
	}, {
		.index		= 2,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PACKED,
		.description	= "YUV 4:2:2 packed, YCbYCr",
		.pixelformat	= V4L2_PIX_FMT_YUYV,
	}, {
		.index		= 3,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PACKED,
		.description	= "YUV 4:2:2 packed, CbYCrY",
		.pixelformat	= V4L2_PIX_FMT_UYVY,
	}, {
		.index		= 4,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PACKED,
		.description	= "YUV 4:2:2 packed, CrYCbY",
		.pixelformat	= V4L2_PIX_FMT_VYUY,
	}, {
		.index		= 5,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PACKED,
		.description	= "YUV 4:2:2 packed, YCrYCb",
		.pixelformat	= V4L2_PIX_FMT_YVYU,
	}, {
		.index		= 6,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PLANAR,
		.description	= "YUV 4:2:2 planar, Y/Cb/Cr",
		.pixelformat	= V4L2_PIX_FMT_YUV422P,
	}, {
		.index		= 7,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PLANAR,
		.description	= "YUV 4:2:0 planar, Y/CbCr",
		.pixelformat	= V4L2_PIX_FMT_NV12,
	}, {
		.index		= 8,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PLANAR,
		.description	= "YUV 4:2:0 planar, Y/CbCr, Tiled",
		.pixelformat	= V4L2_PIX_FMT_NV12T,
	}, {
		.index		= 9,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PLANAR,
		.description	= "YUV 4:2:0 planar, Y/CrCb",
		.pixelformat	= V4L2_PIX_FMT_NV21,
	}, {
		.index		= 10,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PLANAR,
		.description	= "YUV 4:2:2 planar, Y/CbCr",
		.pixelformat	= V4L2_PIX_FMT_NV16,
	}, {
		.index		= 11,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PLANAR,
		.description	= "YUV 4:2:2 planar, Y/CrCb",
		.pixelformat	= V4L2_PIX_FMT_NV61,
	}, {
		.index		= 12,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PLANAR,
		.description	= "YUV 4:2:0 planar, Y/Cb/Cr",
		.pixelformat	= V4L2_PIX_FMT_YUV420,
	}, {
		.index		= 13,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags		= FORMAT_FLAGS_PLANAR,
		.description	= "YUV 4:2:0 planar, Y/Cr/Cb",
		.pixelformat	= V4L2_PIX_FMT_YVU420,
	}, {
		.index		= 14,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.description	= "JPEG encoded data",
		.pixelformat	= V4L2_PIX_FMT_JPEG,
	}, {
		.index		= 15,
		.type		= V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.description	= "Interleaved data",
		.pixelformat	= V4L2_PIX_FMT_INTERLEAVED,
	},
};

static const struct v4l2_queryctrl fimc_controls[] = {
	{
		.id = V4L2_CID_ROTATION,
		.type = V4L2_CTRL_TYPE_BOOLEAN,
		.name = "Roataion",
		.minimum = 0,
		.maximum = 270,
		.step = 90,
		.default_value = 0,
	}, {
		.id = V4L2_CID_HFLIP,
		.type = V4L2_CTRL_TYPE_BOOLEAN,
		.name = "Horizontal Flip",
		.minimum = 0,
		.maximum = 1,
		.step = 1,
		.default_value = 0,
	}, {
		.id = V4L2_CID_VFLIP,
		.type = V4L2_CTRL_TYPE_BOOLEAN,
		.name = "Vertical Flip",
		.minimum = 0,
		.maximum = 1,
		.step = 1,
		.default_value = 0,
	}, {
		.id = V4L2_CID_PADDR_Y,
		.type = V4L2_CTRL_TYPE_BOOLEAN,
		.name = "Physical address Y",
		.minimum = 0,
		.maximum = 1,
		.step = 1,
		.default_value = 0,
		.flags = V4L2_CTRL_FLAG_READ_ONLY,
	}, {
		.id = V4L2_CID_PADDR_CB,
		.type = V4L2_CTRL_TYPE_BOOLEAN,
		.name = "Physical address Cb",
		.minimum = 0,
		.maximum = 1,
		.step = 1,
		.default_value = 0,
		.flags = V4L2_CTRL_FLAG_READ_ONLY,
	}, {
		.id = V4L2_CID_PADDR_CR,
		.type = V4L2_CTRL_TYPE_BOOLEAN,
		.name = "Physical address Cr",
		.minimum = 0,
		.maximum = 1,
		.step = 1,
		.default_value = 0,
		.flags = V4L2_CTRL_FLAG_READ_ONLY,
	}, {
		.id = V4L2_CID_PADDR_CBCR,
		.type = V4L2_CTRL_TYPE_BOOLEAN,
		.name = "Physical address CbCr",
		.minimum = 0,
		.maximum = 1,
		.step = 1,
		.default_value = 0,
		.flags = V4L2_CTRL_FLAG_READ_ONLY,
	}, {
		.id = V4L2_CID_CACHEABLE,
		.type = V4L2_CTRL_TYPE_BOOLEAN,
		.name = "Cacheable",
		.minimum = 0,
		.maximum = 1,
		.step = 1,
		.default_value = 0,
	},
};
#ifdef CONFIG_MACH_GC1
static bool leave_power;
#endif

#ifndef CONFIG_VIDEO_FIMC_MIPI
void s3c_csis_start(int csis_id, int lanes, int settle, \
	int align, int width, int height, int pixel_format) {}
void s3c_csis_stop(int csis_id) {}
void s3c_csis_enable_pktdata(int csis_id, bool enable) {}
#endif

static int fimc_init_camera(struct fimc_control *ctrl)
{
	struct fimc_global *fimc = get_fimc_dev();
	struct s3c_platform_fimc *pdata;
	struct s3c_platform_camera *cam;
	int ret = 0, retry_cnt = 0;

#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
	struct platform_device *pdev = to_platform_device(ctrl->dev);
#endif
	pdata = to_fimc_plat(ctrl->dev);

	cam = ctrl->cam;

	/* do nothing if already initialized */
	if (ctrl->cam->initialized)
		return 0;

#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
	if (ctrl->power_status == FIMC_POWER_OFF) {
		pm_runtime_get_sync(&pdev->dev);
	}
#endif
	/*
	 * WriteBack mode doesn't need to set clock and power,
	 * but it needs to set source width, height depend on LCD resolution.
	*/
	if ((cam->id == CAMERA_WB) || (cam->id == CAMERA_WB_B)) {
		ret = s3cfb_direct_ioctl(0, S3CFB_GET_LCD_WIDTH,
					(unsigned long)&cam->width);
		if (ret) {
			fimc_err("fail to get LCD size\n");
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
			pm_runtime_put_sync(&pdev->dev);
#endif
			return ret;
		}

		ret = s3cfb_direct_ioctl(0, S3CFB_GET_LCD_HEIGHT,
					(unsigned long)&cam->height);
		if (ret) {
			fimc_err("fail to get LCD size\n");
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
			pm_runtime_put_sync(&pdev->dev);
#endif
			return ret;
		}

		cam->window.width = cam->width;
		cam->window.height = cam->height;
		cam->initialized = 1;

		return ret;
	}

retry:
	/* set rate for mclk */
#ifndef CONFIG_MACH_GC1
	if ((clk_get_rate(cam->clk)) && (fimc->mclk_status == CAM_MCLK_OFF)) {
#else
	if ((clk_get_rate(cam->clk)) && (fimc->mclk_status == CAM_MCLK_OFF)
		&& !leave_power) {
#endif
		clk_set_rate(cam->clk, cam->clk_rate);
		clk_enable(cam->clk);
		fimc->mclk_status = CAM_MCLK_ON;
		fimc_info1("clock for camera: %d\n", cam->clk_rate);
	}

	/* enable camera power if needed */
	if (cam->cam_power) {
#ifndef CONFIG_MACH_GC1
		ret = cam->cam_power(1);
#else
		if (!leave_power)
			ret = cam->cam_power(1);

		leave_power = false;
#endif
		if (unlikely(ret < 0)) {
			fimc_err("\nfail to power on\n");
			if (fimc->mclk_status == CAM_MCLK_ON) {
				clk_disable(ctrl->cam->clk);
				fimc->mclk_status = CAM_MCLK_OFF;
			}
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
			pm_runtime_put_sync(&pdev->dev);
#endif
			return ret;
		}
	}

#ifndef CONFIG_MACH_GC1
	/* "0" argument means preview init for s5k4ea */
	ret = v4l2_subdev_call(cam->sd, core, init, 0);
#endif

	/* Retry camera power-up if first i2c fails. */
	if (unlikely(ret < 0)) {
		if (cam->cam_power)
			cam->cam_power(0);

		if (fimc->mclk_status == CAM_MCLK_ON) {
			clk_disable(ctrl->cam->clk);
			fimc->mclk_status = CAM_MCLK_OFF;
		}
		if (retry_cnt++ < 3) {
			msleep(100);
			fimc_err("Retry power on(%d/3)\n\n", retry_cnt);
			goto retry;
		} else {
			fimc_err("Camera power/init failed!!!!\n\n");
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
			if (ctrl->power_status == FIMC_POWER_ON) {
				pm_runtime_put_sync(&pdev->dev);
			}
#endif
		}
	} else {
		/* Apply things to interface register */
		fimc_hwset_reset(ctrl);
		cam->initialized = 1;
	}

	return ret;
}

static int fimc_camera_get_jpeg_memsize(struct fimc_control *ctrl)
{
	int ret = 0;
	struct v4l2_control cam_ctrl;
	cam_ctrl.id = V4L2_CID_CAM_JPEG_MEMSIZE;

	ret = v4l2_subdev_call(ctrl->cam->sd, core, g_ctrl, &cam_ctrl);
	if (ret < 0) {
		fimc_err("%s: Subdev doesn't support JEPG encoding.\n", \
				 __func__);
		return 0;
	}

	return cam_ctrl.value;
}


static int fimc_capture_scaler_info(struct fimc_control *ctrl)
{
	struct fimc_scaler *sc = &ctrl->sc;
	struct v4l2_rect *window = &ctrl->cam->window;
	int tx, ty, sx, sy;
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);
	int rot = 0;

	if (!ctrl->cam->use_isp) {
		sx = window->width;
		sy = window->height;
	} else {
		sx = ctrl->is.fmt.width;
		sy = ctrl->is.fmt.height;
	}

	sc->real_width = sx;
	sc->real_height = sy;

	rot = fimc_mapping_rot_flip(ctrl->cap->rotate, ctrl->cap->flip);

	if (rot & FIMC_ROT) {
		tx = ctrl->cap->fmt.height;
		ty = ctrl->cap->fmt.width;
	} else {
		tx = ctrl->cap->fmt.width;
		ty = ctrl->cap->fmt.height;
	}

	fimc_dbg("%s: CamOut (%d, %d), TargetOut (%d, %d)\n",
			__func__, sx, sy, tx, ty);

	if (sx <= 0 || sy <= 0) {
		fimc_err("%s: invalid source size\n", __func__);
		return -EINVAL;
	}

	if (tx <= 0 || ty <= 0) {
		fimc_err("%s: invalid target size\n", __func__);
		return -EINVAL;
	}

	fimc_get_scaler_factor(sx, tx, &sc->pre_hratio, &sc->hfactor);
	fimc_get_scaler_factor(sy, ty, &sc->pre_vratio, &sc->vfactor);

	if (sx == sy) {
		if (sx*10/tx >= 15 && sx*10/tx < 20) {
			sc->pre_hratio = 2;
			sc->hfactor = 1;
		}
		if (sy*10/ty >= 15 && sy*10/ty < 20) {
			sc->pre_vratio = 2;
			sc->vfactor = 1;
		}
	}


	sc->pre_dst_width = sx / sc->pre_hratio;
	sc->pre_dst_height = sy / sc->pre_vratio;

	if (pdata->hw_ver >= 0x50) {
		sc->main_hratio = (sx << 14) / (tx << sc->hfactor);
		sc->main_vratio = (sy << 14) / (ty << sc->vfactor);
	} else {
		sc->main_hratio = (sx << 8) / (tx << sc->hfactor);
		sc->main_vratio = (sy << 8) / (ty << sc->vfactor);
	}

	sc->scaleup_h = (tx >= sx) ? 1 : 0;
	sc->scaleup_v = (ty >= sy) ? 1 : 0;

	return 0;
}

static int fimc_capture_change_scaler_info(struct fimc_control *ctrl)
{
	struct fimc_scaler *sc = &ctrl->sc;
	struct v4l2_rect *window = &ctrl->cam->window;
	int tx, ty, sx, sy;
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);
	int rot = 0;

	if (!ctrl->cam->use_isp) {
		sx = window->width;
		sy = window->height;
	} else {
		sx = ctrl->is.zoom_in_width;
		sy = ctrl->is.zoom_in_height;
	}

	sc->real_width = sx;
	sc->real_height = sy;

	rot = fimc_mapping_rot_flip(ctrl->cap->rotate, ctrl->cap->flip);

	if (rot & FIMC_ROT) {
		tx = ctrl->cap->fmt.height;
		ty = ctrl->cap->fmt.width;
	} else {
		tx = ctrl->cap->fmt.width;
		ty = ctrl->cap->fmt.height;
	}

	fimc_dbg("%s: CamOut (%d, %d), TargetOut (%d, %d)\n",
			__func__, sx, sy, tx, ty);

	if (sx <= 0 || sy <= 0) {
		fimc_err("%s: invalid source size\n", __func__);
		return -EINVAL;
	}

	if (tx <= 0 || ty <= 0) {
		fimc_err("%s: invalid target size\n", __func__);
		return -EINVAL;
	}

	fimc_get_scaler_factor(sx, tx, &sc->pre_hratio, &sc->hfactor);
	fimc_get_scaler_factor(sy, ty, &sc->pre_vratio, &sc->vfactor);

	sc->pre_dst_width = sx / sc->pre_hratio;
	sc->pre_dst_height = sy / sc->pre_vratio;

	if (pdata->hw_ver >= 0x50) {
		sc->main_hratio = (sx << 14) / (tx << sc->hfactor);
		sc->main_vratio = (sy << 14) / (ty << sc->vfactor);
	} else {
		sc->main_hratio = (sx << 8) / (tx << sc->hfactor);
		sc->main_vratio = (sy << 8) / (ty << sc->vfactor);
	}

	sc->scaleup_h = (tx >= sx) ? 1 : 0;
	sc->scaleup_v = (ty >= sy) ? 1 : 0;

	return 0;
}

int fimc_start_zoom_capture(struct fimc_control *ctrl)
{
	fimc_dbg("%s\n", __func__);

	fimc_hwset_start_scaler(ctrl);

	fimc_hwset_enable_capture(ctrl, ctrl->sc.bypass);
	fimc_hwset_disable_frame_end_irq(ctrl);

	return 0;
}

int fimc_stop_zoom_capture(struct fimc_control *ctrl)
{
	fimc_dbg("%s\n", __func__);
	if (!ctrl->cam) {
		fimc_err("%s: No capture device.\n", __func__);
		return -ENODEV;
	}

	if (!ctrl->cap) {
		fimc_err("%s: No cappure format.\n", __func__);
		return -ENODEV;
	}

	if (ctrl->cap->lastirq) {
		fimc_hwset_enable_lastirq(ctrl);
		fimc_hwset_disable_capture(ctrl);
		fimc_hwset_disable_lastirq(ctrl);
	} else {
		fimc_hwset_disable_capture(ctrl);
		fimc_hwset_enable_frame_end_irq(ctrl);
	}

	fimc_hwset_stop_scaler(ctrl);
	return 0;
}

static int fimc_add_inqueue(struct fimc_control *ctrl, int i)
{
	struct fimc_capinfo *cap = ctrl->cap;
	struct fimc_buf_set *tmp_buf;
	struct list_head *count;

	/* PINGPONG_2ADDR_MODE Only */
	list_for_each(count, &cap->inq) {
		tmp_buf = list_entry(count, struct fimc_buf_set, list);
		/* skip list_add_tail if already buffer is in cap->inq list*/
		if (tmp_buf->id == i)
			return 0;
	}
	list_add_tail(&cap->bufs[i].list, &cap->inq);

	return 0;
}

static int fimc_add_outqueue(struct fimc_control *ctrl, int i)
{
	struct fimc_capinfo *cap = ctrl->cap;
	struct fimc_buf_set *buf;
	unsigned int mask = 0x2;

	/* PINGPONG_2ADDR_MODE Only */
	/* pair_buf_index stands for pair index of i. (0<->2) (1<->3) */
	int pair_buf_index = (i^mask);

	/* FIMC have 4 h/w registers */
	if (i < 0 || i >= FIMC_PHYBUFS) {
		fimc_err("%s: invalid queue index : %d\n", __func__, i);
		return -ENOENT;
	}

	if (list_empty(&cap->inq))
		return -ENOENT;

	buf = list_first_entry(&cap->inq, struct fimc_buf_set, list);

	/* pair index buffer should be allocated first */
	cap->outq[pair_buf_index] = buf->id;
	fimc_hwset_output_address(ctrl, buf, pair_buf_index);

	cap->outq[i] = buf->id;
	fimc_hwset_output_address(ctrl, buf, i);

	list_del(&buf->list);

	return 0;
}

int fimc_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
{
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
	int ret = 0;

	fimc_dbg("%s\n", __func__);

	/* WriteBack doesn't have subdev_call */

	if ((ctrl->cam->id == CAMERA_WB) || (ctrl->cam->id == CAMERA_WB_B))
		return 0;

	mutex_lock(&ctrl->v4l2_lock);
	ret = v4l2_subdev_call(ctrl->cam->sd, video, g_parm, a);
	mutex_unlock(&ctrl->v4l2_lock);

	return ret;
}

int fimc_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
{
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);
	int ret = 0;
	int new_fps = a->parm.capture.timeperframe.denominator /
					a->parm.capture.timeperframe.numerator;

	fimc_info2("%s fimc%d, %d\n", __func__, ctrl->id, new_fps);

	/* WriteBack doesn't have subdev_call */
	if ((ctrl->cam->id == CAMERA_WB) || (ctrl->cam->id == CAMERA_WB_B))
		return 0;

	mutex_lock(&ctrl->v4l2_lock);

	if (ctrl->cam->sd && fimc_cam_use)
		ret = v4l2_subdev_call(ctrl->cam->sd, video, s_parm, a);
	else if (ctrl->is.sd && fimc_cam_use)
		ret = v4l2_subdev_call(ctrl->is.sd, video, s_parm, a);

	mutex_unlock(&ctrl->v4l2_lock);

	return ret;
}

/* Enumerate controls */
int fimc_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qc)
{
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
	int i, ret;

	fimc_dbg("%s\n", __func__);

	for (i = 0; i < ARRAY_SIZE(fimc_controls); i++) {
		if (fimc_controls[i].id == qc->id) {
			memcpy(qc, &fimc_controls[i], sizeof(struct v4l2_queryctrl));
			return 0;
		}
	}

	mutex_lock(&ctrl->v4l2_lock);
	ret = v4l2_subdev_call(ctrl->cam->sd, core, queryctrl, qc);
	mutex_unlock(&ctrl->v4l2_lock);

	return ret;
}

/* Menu control items */
int fimc_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qm)
{
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
	int ret = 0;

	fimc_dbg("%s\n", __func__);

	mutex_lock(&ctrl->v4l2_lock);
	ret = v4l2_subdev_call(ctrl->cam->sd, core, querymenu, qm);
	mutex_unlock(&ctrl->v4l2_lock);

	return ret;
}

int fimc_enum_input(struct file *file, void *fh, struct v4l2_input *inp)
{
	struct fimc_global *fimc = get_fimc_dev();
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;

	fimc_dbg("%s: index %d\n", __func__, inp->index);

	if (inp->index >= FIMC_MAXCAMS) {
		fimc_err("%s: invalid input index, received = %d\n",
				__func__, inp->index);
		return -EINVAL;
	}

	if (!fimc->camera_isvalid[inp->index])
		return -EINVAL;
	mutex_lock(&ctrl->v4l2_lock);

	if (fimc->camera[inp->index]->use_isp && !(fimc->camera[inp->index]->info))
		strcpy(inp->name, "ISP Camera");
	else
		strcpy(inp->name, fimc->camera[inp->index]->info->type);

	inp->type = V4L2_INPUT_TYPE_CAMERA;

	mutex_unlock(&ctrl->v4l2_lock);

	return 0;
}

int fimc_g_input(struct file *file, void *fh, unsigned int *i)
{
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
	struct fimc_global *fimc = get_fimc_dev();

	/* In case of isueing g_input before s_input */
	if (!ctrl->cam) {
		fimc_err("no camera device selected yet. do VIDIOC_S_INPUT first\n");
		return -ENODEV;
	}
	mutex_lock(&ctrl->v4l2_lock);

	*i = (unsigned int) fimc->active_camera;

	mutex_unlock(&ctrl->v4l2_lock);

	fimc_dbg("%s: index %d\n", __func__, *i);

	return 0;
}

int fimc_release_subdev(struct fimc_control *ctrl)
{
	struct fimc_global *fimc = get_fimc_dev();
	struct i2c_client *client;
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);
	int ret;

	if (ctrl->cam->sd && fimc_cam_use) {
		fimc_dbg("%s called\n", __func__);

		/* WriteBack doesn't need clock setting */
		if ((ctrl->cam->id == CAMERA_WB) ||
			(ctrl->cam->id == CAMERA_WB_B)) {
			ctrl->cam->initialized = 0;
			ctrl->cam = NULL;
			fimc->active_camera = -1;
			return 0;
		}

		client = v4l2_get_subdevdata(ctrl->cam->sd);
		i2c_unregister_device(client);
		ctrl->cam->sd = NULL;
#ifndef CONFIG_MACH_GC1
		if (ctrl->cam->cam_power)
#else
		if (ctrl->cam->cam_power && !leave_power)
#endif
			ctrl->cam->cam_power(0);

		/* shutdown the MCLK */
#ifndef CONFIG_MACH_GC1
		if (fimc->mclk_status == CAM_MCLK_ON) {
#else
		if (fimc->mclk_status == CAM_MCLK_ON && !leave_power) {
#endif
			clk_disable(ctrl->cam->clk);
			fimc->mclk_status = CAM_MCLK_OFF;
		}

		ctrl->cam->initialized = 0;
		ctrl->cam = NULL;
		fimc->active_camera = -1;
	} else if (ctrl->cam->sd) {
		ctrl->cam->initialized = 0;
		ctrl->cam = NULL;
		fimc->active_camera = -1;
	}

	if (ctrl->flite_sd && fimc_cam_use) {
		ret = v4l2_subdev_call(ctrl->flite_sd, core, s_power, 0);
		if (ret)
			fimc_err("s_power failed: %d", ret);

		ctrl->flite_sd = NULL;
	}

	return 0;
}

static int fimc_configure_subdev(struct fimc_control *ctrl)
{
	struct i2c_adapter *i2c_adap;
	struct i2c_board_info *i2c_info;
	struct i2c_client *client;
	struct v4l2_subdev *sd;
	unsigned short addr;
	char *name;
	int ret = 0;

	i2c_adap = i2c_get_adapter(ctrl->cam->get_i2c_busnum());
	if (!i2c_adap) {
		fimc_err("subdev i2c_adapter missing-skip registration\n");
		return -ENODEV;
	}

	i2c_info = ctrl->cam->info;
	if (!i2c_info) {
		fimc_err("%s: subdev i2c board info missing\n", __func__);
		return -ENODEV;
	}

	name = i2c_info->type;
	if (!name) {
		fimc_err("subdev i2c driver name missing-skip registration\n");
		return -ENODEV;
	}

	addr = i2c_info->addr;
	if (!addr) {
		fimc_err("subdev i2c address missing-skip registration\n");
		return -ENODEV;
	}
	/*
	 * NOTE: first time subdev being registered,
	 * s_config is called and try to initialize subdev device
	 * but in this point, we are not giving MCLK and power to subdev
	 * so nothing happens but pass platform data through
	 */
	sd = v4l2_i2c_new_subdev_board(&ctrl->v4l2_dev, i2c_adap,
			i2c_info, &addr);
	if (!sd) {
		fimc_err("%s: v4l2 subdev board registering failed\n",
				__func__);
	}
	/* Assign subdev to proper camera device pointer */
	ctrl->cam->sd = sd;

	if (!ctrl->cam->initialized) {
		ret = fimc_init_camera(ctrl);
		if (ret < 0) {
			fimc_err("%s: fail to initialize subdev\n", __func__);

#ifndef CONFIG_MACH_GC1			
			client = v4l2_get_subdevdata(sd);
			i2c_unregister_device(client);
			ctrl->cam->sd = NULL;
#endif			

			return ret;
		}
	}

	return 0;
}

static int flite_register_callback(struct device *dev, void *p)
{
	struct v4l2_subdev **sd_list = p;
	struct v4l2_subdev *sd = NULL;

	sd = dev_get_drvdata(dev);
	if (sd) {
		struct platform_device *pdev = v4l2_get_subdev_hostdata(sd);
		*(sd_list + pdev->id) = sd;
	}

	return 0; /* non-zero value stops iteration */
}

static struct v4l2_subdev *exynos_flite_get_subdev(int id)
{
	const char *module_name = "exynos-fimc-lite";
	struct device_driver *drv;
	struct v4l2_subdev *sd[FLITE_MAX_NUM] = {NULL,};
	int ret;

	drv = driver_find(module_name, &platform_bus_type);
	if (!drv)  {
		request_module(module_name);
		drv = driver_find(module_name, &platform_bus_type);
	}
	if (!drv)
		return ERR_PTR(-ENODEV);

	ret = driver_for_each_device(drv, NULL, &sd[0],
				     flite_register_callback);
	put_driver(drv);

	return ret ? NULL : sd[id];
}

int fimc_subdev_attatch(struct fimc_control *ctrl)
{
	int ret = 0;
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);

	ctrl->flite_sd = exynos_flite_get_subdev(ctrl->cam->flite_id);
	if (IS_ERR_OR_NULL(ctrl->flite_sd)) {
			ctrl->flite_sd = NULL;
			return PTR_ERR(ctrl->flite_sd);
	} else {
		if (fimc_cam_use) {
			ret = v4l2_subdev_call(ctrl->flite_sd, core, s_power, 1);
			if (ret)
				fimc_err("s_power failed: %d", ret);
		}

	}

	return 0;
}

static int fimc_is_register_callback(struct device *dev, void *p)
{
	struct v4l2_subdev **sd = p;

	*sd = dev_get_drvdata(dev);

	if (!*sd)
		return -EINVAL;

	return 0; /* non-zero value stops iteration */
}

int fimc_is_release_subdev(struct fimc_control *ctrl)
{
	int ret;
	struct fimc_global *fimc = get_fimc_dev();
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);

	if (ctrl->is.sd && ctrl->cam && fimc_cam_use) {
		if (ctrl->cam->cam_power)
			ctrl->cam->cam_power(0);
		/* shutdown the MCLK */
		if (fimc->mclk_status == CAM_MCLK_ON) {
			clk_disable(ctrl->cam->clk);
			fimc->mclk_status = CAM_MCLK_OFF;
		}

		ret = v4l2_subdev_call(ctrl->is.sd, core, s_power, 0);
		if (ret < 0) {
			fimc_dbg("FIMC-IS init failed");
			return -ENODEV;
		}

		v4l2_device_unregister_subdev(ctrl->is.sd);
		ctrl->is.sd = NULL;
		ctrl->cam->initialized = 0;
		ctrl->cam = NULL;
		fimc->active_camera = -1;
	} else if (ctrl->is.sd && ctrl->cam) {
		ctrl->is.sd = NULL;
		ctrl->cam->initialized = 0;
		ctrl->cam = NULL;
		fimc->active_camera = -1;
	}

	return 0;
}

static struct v4l2_subdev *fimc_is_get_subdev(int id)
{
	const char *module_name = "exynos4-fimc-is";
	struct device_driver *drv;
	struct v4l2_subdev *sd = NULL;
	int ret;

	drv = driver_find(module_name, &platform_bus_type);
	if (!drv)  {
		request_module(module_name);
		drv = driver_find(module_name, &platform_bus_type);
	}
	if (!drv)
		return ERR_PTR(-ENODEV);

	ret = driver_for_each_device(drv, NULL, &sd,
				     fimc_is_register_callback);
	put_driver(drv);
	return ret ? NULL : sd;
}

static int fimc_is_init_cam(struct fimc_control *ctrl)
{
	struct fimc_global *fimc = get_fimc_dev();
	struct s3c_platform_camera *cam;
	int ret = 0;

#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
	struct platform_device *pdev = to_platform_device(ctrl->dev);
#endif

	cam = ctrl->cam;
	/* Do noting if already initialized */
	if (ctrl->cam->initialized)
		return 0;

#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
	if (ctrl->power_status == FIMC_POWER_OFF)
		pm_runtime_get_sync(&pdev->dev);
#endif

	/* set rate for mclk */
	if ((clk_get_rate(cam->clk)) && (fimc->mclk_status == CAM_MCLK_OFF)) {
		clk_set_rate(cam->clk, cam->clk_rate);
		clk_enable(cam->clk);
		fimc->mclk_status = CAM_MCLK_ON;
		fimc_info1("clock for camera (FIMC-IS): %d\n", cam->clk_rate);
	}

	/* enable camera power if needed */
	if (cam->cam_power) {
		ret = cam->cam_power(1);
		if (unlikely(ret < 0))
			fimc_err("\nfail to power on\n");
	}


	/* Retry camera power-up if first i2c fails. */
	if (unlikely(ret < 0)) {
		if (cam->cam_power)
			cam->cam_power(0);

		if (fimc->mclk_status == CAM_MCLK_ON) {
			clk_disable(ctrl->cam->clk);
			fimc->mclk_status = CAM_MCLK_OFF;
		}

		fimc_err("Camera power/init failed!!!!\n\n");
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
		if (ctrl->power_status == FIMC_POWER_ON)
			pm_runtime_put_sync(&pdev->dev);
#endif
	} else {
		/* Apply things to interface register */
		fimc_hwset_reset(ctrl);
		cam->initialized = 1;
	}

	return ret;
}

int fimc_s_input(struct file *file, void *fh, unsigned int i)
{
	struct fimc_global *fimc = get_fimc_dev();
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
	struct fimc_capinfo *cap = ctrl->cap;
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);
	int ret = 0;
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
	struct platform_device *pdev = to_platform_device(ctrl->dev);
#endif

	fimc_dbg("%s: index %d\n", __func__, i);

	if (i >= FIMC_MAXCAMS) {
		fimc_err("%s: invalid input index\n", __func__);
		return -EINVAL;
	}

	if (!fimc->camera_isvalid[i])
		return -EINVAL;

	if (fimc->camera[i]->sd && fimc_cam_use) {
		fimc_err("%s: Camera already in use.\n", __func__);
		return -EBUSY;
	}
	mutex_lock(&ctrl->v4l2_lock);

	/* If ctrl->cam is not NULL, there is one subdev already registered.
	 * We need to unregister that subdev first. */
	if (i != fimc->active_camera) {
		fimc_info1("\n\nfimc_s_input activating subdev\n");
		if (ctrl->cam && (ctrl->cam->sd || ctrl->flite_sd))
			fimc_release_subdev(ctrl);
		else if (ctrl->is.sd)
			fimc_is_release_subdev(ctrl);
		ctrl->cam = fimc->camera[i];

		if ((ctrl->cam->id != CAMERA_WB) && (ctrl->cam->id !=
			CAMERA_WB_B) && (!ctrl->cam->use_isp) && fimc_cam_use) {
			ret = fimc_configure_subdev(ctrl);
			if (ret < 0) {
#ifdef CONFIG_MACH_GC1
				if (ret == -ENOSYS) {
					/* return no error If firmware is bad.
					Because F/W update app should access the sensor through HAL instance */
					fimc_err("%s: please update the F/W\n", __func__);
				} else {
					ctrl->cam = NULL;
					mutex_unlock(&ctrl->v4l2_lock);
					fimc_err("%s: Could not register camera" \
						" sensor with V4L2.\n", __func__);
					return -ENODEV;
				}
#else
				ctrl->cam = NULL;
				mutex_unlock(&ctrl->v4l2_lock);
				fimc_err("%s: Could not register camera" \
					" sensor with V4L2.\n", __func__);
				return -ENODEV;
#endif
			}
		}
		fimc->active_camera = i;
		fimc_info2("fimc_s_input activated subdev = %d\n", i);
	}

	if (!fimc_cam_use) {
		if (i == fimc->active_camera) {
			ctrl->cam = fimc->camera[i];
			fimc_info2("fimc_s_input activating subdev FIMC%d\n",
							ctrl->id);
		} else {
			mutex_unlock(&ctrl->v4l2_lock);
			return -EINVAL;
		}
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
#ifdef CONFIG_DRM_EXYNOS_FIMD_WB
		if ((ctrl->cam->id != CAMERA_WB) &&
		(ctrl->cam->id !=	CAMERA_WB_B) &&
		(ctrl->power_status == FIMC_POWER_OFF)) {
#else
		if (ctrl->power_status == FIMC_POWER_OFF) {
#endif
			pm_runtime_get_sync(&pdev->dev);
		}
		fimc_hwset_reset(ctrl);
#endif
	}

	if (ctrl->cam->use_isp) {
	    /* fimc-lite attatch */
	    ret = fimc_subdev_attatch(ctrl);
	    if (ret) {
		    fimc_err("subdev_attatch failed\n");
		    mutex_unlock(&ctrl->v4l2_lock);
		    return -ENODEV;
	    }
	    /* fimc-is attatch */
	    ctrl->is.sd = fimc_is_get_subdev(i);
	    if (IS_ERR_OR_NULL(ctrl->is.sd)) {
		fimc_err("fimc-is subdev_attatch failed\n");
		mutex_unlock(&ctrl->v4l2_lock);
		return -ENODEV;
	    }

	    ctrl->is.fmt.width = ctrl->cam->width;
	    ctrl->is.fmt.height = ctrl->cam->height;
	    ctrl->is.frame_count = 0;
	    if (fimc_cam_use) {
		ret = fimc_is_init_cam(ctrl);
		if (ret < 0) {
			fimc_dbg("FIMC-IS init clock failed");
			mutex_unlock(&ctrl->v4l2_lock);
			return -ENODEV;
		}
		ret = v4l2_subdev_call(ctrl->is.sd, core, s_power, 1);
		if (ret < 0) {
			fimc_err("FIMC-IS init s_power failed");
			mutex_unlock(&ctrl->v4l2_lock);
			return -ENODEV;
		}
		ret = v4l2_subdev_call(ctrl->is.sd, core, load_fw);
		if (ret < 0) {
			fimc_err("FIMC-IS init load_fw failed");
			mutex_unlock(&ctrl->v4l2_lock);
			if (!cap) {
				cap = kzalloc(sizeof(*cap), GFP_KERNEL);
				if (!cap) {
					fimc_err("%s: no memory for "
					"capture device info\n", __func__);
					return -ENOMEM;
				}

				/* assign to ctrl */
				ctrl->cap = cap;
			}
			return -ENODEV;
		}
		ret = v4l2_subdev_call(ctrl->is.sd, core, init, ctrl->cam->sensor_index);
		if (ret < 0) {
			fimc_err("FIMC-IS init failed");
			mutex_unlock(&ctrl->v4l2_lock);
			if (!cap) {
				cap = kzalloc(sizeof(*cap), GFP_KERNEL);
				if (!cap) {
					fimc_err("%s: no memory for "
					"capture device info\n", __func__);
					return -ENOMEM;
				}

				/* assign to ctrl */
				ctrl->cap = cap;
			}

			return -ENODEV;
		}
	    }
	}


	/*
	 * The first time alloc for struct cap_info, and will be
	 * released at the file close.
	 * Anyone has better idea to do this?
	*/
	if (!cap) {
		cap = kzalloc(sizeof(*cap), GFP_KERNEL);
		if (!cap) {
			fimc_err("%s: no memory for "
				"capture device info\n", __func__);
			return -ENOMEM;
		}

		/* assign to ctrl */
		ctrl->cap = cap;
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
		if (ctrl->power_status == FIMC_POWER_OFF)
			pm_runtime_get_sync(&pdev->dev);
#endif
	} else {
		memset(cap, 0, sizeof(*cap));
	}

	mutex_unlock(&ctrl->v4l2_lock);

	return 0;
}

int fimc_enum_fmt_vid_capture(struct file *file, void *fh,
					struct v4l2_fmtdesc *f)
{
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
	int i = f->index;

	fimc_dbg("%s\n", __func__);

	if (i >= ARRAY_SIZE(capture_fmts)) {
		fimc_err("%s: There is no support format index %d\n", __func__, i);
		return -EINVAL;
	}

	mutex_lock(&ctrl->v4l2_lock);

	memset(f, 0, sizeof(*f));
	memcpy(f, &capture_fmts[i], sizeof(*f));

	mutex_unlock(&ctrl->v4l2_lock);

	return 0;
}

#ifdef CONFIG_SLP_DMABUF
/*
 * figures out the depth of requested format
 */
static int fimc_fmt_depth_mplane(struct fimc_control *ctrl,
		struct v4l2_format *f, int depth[])
{
	int ret = 0;

	/* handles only supported pixelformats */
	switch (f->fmt.pix_mp.pixelformat) {
	case V4L2_PIX_FMT_NV12:
	case V4L2_PIX_FMT_NV12T:
	case V4L2_PIX_FMT_NV21:
		f->fmt.pix_mp.num_planes = 2;
		depth[0] = 8;
		depth[1] = 4;
		break;
	case V4L2_PIX_FMT_YUV420:
	case V4L2_PIX_FMT_YVU420:
		f->fmt.pix_mp.num_planes = 3;
		depth[0] = 8;
		depth[1] = 2;
		depth[2] = 2;
		break;
	case V4L2_PIX_FMT_JPEG:
	case V4L2_PIX_FMT_INTERLEAVED:
		f->fmt.pix_mp.num_planes = 1;
		depth[0] = -1;
		fimc_dbg("Compressed format.\n");
		break;
	default:
		fimc_dbg("why am I here?\n");
		ret = -EINVAL;
		break;
	}

	return ret;
}
static int fimc_g_fmt_vid_capture_mplane(struct fimc_control *ctrl,
		struct v4l2_format *f)
{
	int depth[VIDEO_MAX_PLANES];
	int ret;
	int i;

	/*
	 * Note that expecting format only can be with
	 * available output format from FIMC
	 * Following items should be handled in driver
	 * bytesperline = width * depth / 8
	 * sizeimage = bytesperline * height
	 */

	f->fmt.pix_mp.pixelformat = ctrl->cap->fmt.pixelformat;
	f->fmt.pix_mp.width = ctrl->cap->fmt.width;
	f->fmt.pix_mp.height = ctrl->cap->fmt.height;

	ret = fimc_fmt_depth_mplane(ctrl, f, depth);
	if (ret < 0) {
		fimc_err("Invaild format\n");
		return ret;
	}
	for (i = 0; i < f->fmt.pix_mp.num_planes; ++i) {
		f->fmt.pix_mp.plane_fmt[i].bytesperline = (f->fmt.pix_mp.width *
				depth[i]) >> 3;
		f->fmt.pix_mp.plane_fmt[i].sizeimage =
			(f->fmt.pix_mp.plane_fmt[i].bytesperline *
			f->fmt.pix_mp.width);
	}

	return 0;
}
#endif

int fimc_g_fmt_vid_capture(struct file *file, void *fh, struct v4l2_format *f)
{
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;

	fimc_dbg("%s\n", __func__);

	if (!ctrl->cap) {
		fimc_err("%s: no capture device info\n", __func__);
		return -EINVAL;
	}

	mutex_lock(&ctrl->v4l2_lock);

#ifdef CONFIG_SLP_DMABUF
	if (V4L2_TYPE_IS_MULTIPLANAR(f->type))
		if (fimc_g_fmt_vid_capture_mplane(ctrl, f) < 0) {
			mutex_unlock(&ctrl->v4l2_lock);
			return -EINVAL;
		}
	else {
		memset(&f->fmt.pix, 0, sizeof(f->fmt.pix));
		memcpy(&f->fmt.pix, &ctrl->cap->fmt, sizeof(f->fmt.pix));
	}
#else
	memset(&f->fmt.pix, 0, sizeof(f->fmt.pix));
	memcpy(&f->fmt.pix, &ctrl->cap->fmt, sizeof(f->fmt.pix));
#endif

	mutex_unlock(&ctrl->v4l2_lock);

	return 0;
}

/*
 * Check for whether the requested format
 * can be streamed out from FIMC
 * depends on FIMC node
 */
static int fimc_fmt_avail(struct fimc_control *ctrl,
		struct v4l2_pix_format *f)
{
	int i;

	/*
	 * TODO: check for which FIMC is used.
	 * Available fmt should be varied for each FIMC
	 */

	for (i = 0; i < ARRAY_SIZE(capture_fmts); i++) {
		if (capture_fmts[i].pixelformat == f->pixelformat)
			return 0;
	}

	fimc_info1("Not supported pixelformat requested\n");

	return -1;
}

/*
 * figures out the depth of requested format
 */
static int fimc_fmt_depth(struct fimc_control *ctrl, struct v4l2_pix_format *f)
{
	int err, depth = 0;

	/* First check for available format or not */
	err = fimc_fmt_avail(ctrl, f);
	if (err < 0)
		return -1;

	/* handles only supported pixelformats */
	switch (f->pixelformat) {
	case V4L2_PIX_FMT_RGB32:
		depth = 32;
		fimc_dbg("32bpp\n");
		break;
	case V4L2_PIX_FMT_RGB565:
	case V4L2_PIX_FMT_YUYV:
	case V4L2_PIX_FMT_UYVY:
	case V4L2_PIX_FMT_VYUY:
	case V4L2_PIX_FMT_YVYU:
	case V4L2_PIX_FMT_YUV422P:
	case V4L2_PIX_FMT_NV16:
	case V4L2_PIX_FMT_NV61:
		depth = 16;
		fimc_dbg("16bpp\n");
		break;
	case V4L2_PIX_FMT_NV12:
	case V4L2_PIX_FMT_NV12T:
	case V4L2_PIX_FMT_NV21:
	case V4L2_PIX_FMT_YUV420:
	case V4L2_PIX_FMT_YVU420:
		depth = 12;
		fimc_dbg("12bpp\n");
		break;
	case V4L2_PIX_FMT_JPEG:
	case V4L2_PIX_FMT_INTERLEAVED:
		depth = -1;
		fimc_dbg("Compressed format.\n");
		break;
	default:
		fimc_dbg("why am I here?\n");
		break;
	}

	return depth;
}

int fimc_s_fmt_vid_private(struct file *file, void *fh, struct v4l2_format *f)
{
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);
	struct v4l2_mbus_framefmt *mbus_fmt;
	int ret = 0;

	fimc_dbg("%s\n", __func__);
	if (ctrl->cam->sd) {
		struct v4l2_pix_format *pix = &f->fmt.pix;
		int depth;

		fimc_info1("%s %d:\n", __func__, __LINE__);

		mbus_fmt = &ctrl->cap->mbus_fmt;
		mbus_fmt->width = pix->width;
		mbus_fmt->height = pix->height;
#ifdef CONFIG_MACH_P4NOTE
/* Unfortuntely, we have to use pix->field (not pix->priv) since
 * pix.field is already used in the below else condtion statement
 * (in case that sub-devices are not registered)
 */
		mbus_fmt->field = pix->field;
#endif
#if defined(CONFIG_MACH_GC1)
		mbus_fmt->field = pix->priv;
#endif
		printk(KERN_INFO "%s mbus_fmt->width = %d, height = %d,\n",
			__func__,mbus_fmt->width ,mbus_fmt->height);

		depth = fimc_fmt_depth(ctrl, pix);
		if (depth == 0) {
			fimc_err("%s: Invalid pixel format\n", __func__);
			return -EINVAL;
		} else if (depth < 0) {	/* JPEG  */
			mbus_fmt->code = V4L2_MBUS_FMT_JPEG_1X8;
			mbus_fmt->colorspace = V4L2_COLORSPACE_JPEG;
		} else {
			mbus_fmt->code = V4L2_MBUS_FMT_VYUY8_2X8;
		}

		if (fimc_cam_use) {
			ret = v4l2_subdev_call(ctrl->cam->sd, video,
					       s_mbus_fmt, mbus_fmt);
			if (ret) {
				fimc_err("%s: fail to s_mbus_fmt\n", __func__);
				return ret;
			}
		}

		return 0;
	} else {
		mbus_fmt = kzalloc(sizeof(*mbus_fmt), GFP_KERNEL);
		if (!mbus_fmt) {
			fimc_err("%s: no memory for "
				"mbus_fmt\n", __func__);
			return -ENOMEM;
		}
		ctrl->is.fmt.width = f->fmt.pix.width;
		ctrl->is.fmt.height = f->fmt.pix.height;
		ctrl->is.fmt.pixelformat = f->fmt.pix.pixelformat;

		mbus_fmt->width = f->fmt.pix.width;
		mbus_fmt->height = f->fmt.pix.height;
		mbus_fmt->code = V4L2_MBUS_FMT_YUYV8_2X8; /*dummy*/
		mbus_fmt->field = f->fmt.pix.field;
		mbus_fmt->colorspace = V4L2_COLORSPACE_SRGB;

		printk(KERN_INFO "%s mbus_fmt->width = %d, height = %d, \n",
			__func__,mbus_fmt->width ,mbus_fmt->height);
		if (fimc_cam_use)
			ret = v4l2_subdev_call(ctrl->is.sd, video,
					s_mbus_fmt, mbus_fmt);
		kfree(mbus_fmt);
		return ret;
	}

	return -EINVAL;
}

int fimc_s_fmt_vid_capture(struct file *file, void *fh, struct v4l2_format *f)
{
	struct fimc_control *ctrl = ((struct fimc_prv_data *)fh)->ctrl;
	struct fimc_capinfo *cap = ctrl->cap;
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);

	int ret = 0;
	int depth;
	struct v4l2_control is_ctrl;

	is_ctrl.id = 0;
	is_ctrl.value = 0;

	printk(KERN_INFO "%s\n", __func__);

	if (!ctrl->cap) {
		fimc_err("%s: No capture structure."  \
			"you have to call s_input first.\n", __func__);
		return -ENODEV;
	}

	/* rotaton, flip, dtp_mode, movie_mode and vt_mode,
	 * sensor_output_width,height should be maintained.(by TN) */
	memset(cap, 0, sizeof(*cap) - sizeof(u32) * 7);

	mutex_lock(&ctrl->v4l2_lock);

	memset(&cap->fmt, 0, sizeof(cap->fmt));
#ifdef CONFIG_SLP_DMABUF
	if (V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
		cap->fmt.pixelformat = f->fmt.pix_mp.pixelformat;
		cap->fmt.width = f->fmt.pix_mp.width;
		cap->fmt.height = f->fmt.pix_mp.height;
		cap->fmt.pixelformat = f->fmt.pix_mp.pixelformat;
	} else
		memcpy(&cap->fmt, &f->fmt.pix, sizeof(cap->fmt));
#else
	memcpy(&cap->fmt, &f->fmt.pix, sizeof(cap->fmt));
#endif

	/*
	 * Note that expecting format only can be with
	 * available output format from FIMC
	 * Following items should be handled in driver
	 * bytesperline = width * depth / 8
	 * sizeimage = bytesperline * height
	 */
	/* This function may return 0 or -1 in case of error,
	 * hence need to check here.
	 */

	depth = fimc_fmt_depth(ctrl, &cap->fmt);
	if (depth == 0) {
		mutex_unlock(&ctrl->v4l2_lock);
		fimc_err("%s: Invalid pixel format\n", __func__);
		return -EINVAL;
	} else if (depth < 0) {
		/*
		 * When the pixelformat is JPEG,
		 * the application is requesting for data
		 * in JPEG compressed format
		*/
		cap->fmt.colorspace = V4L2_COLORSPACE_JPEG;
	} else {
		cap->fmt.bytesperline = (cap->fmt.width * depth) >> 3;
		cap->fmt.sizeimage = (cap->fmt.bytesperline * cap->fmt.height);
	}


	if (cap->fmt.pixelformat == V4L2_PIX_FMT_JPEG ||
		cap->fmt.pixelformat == V4L2_PIX_FMT_INTERLEAVED) {
		ctrl->sc.bypass = 1;
		cap->lastirq = 0;
		fimc_info1("fimc_s_fmt_vid_capture V4L2_COLORSPACE_JPEG or INTERLEAVED\n");
	} else {
#ifdef CONFIG_MACH_GC1
	/*
	 Fimc scaler input Hsize is restricted to 4224 pixels.
	 So, GC1 has to bypass fimc scaler to use more than 12M YUV.
	 */
		if (cap->fmt.width > ctrl->limit->pre_dst_w)
			ctrl->sc.bypass = 1;
		else
			ctrl->sc.bypass = 0;

#else
		ctrl->sc.bypass = 0;
#endif
		cap->lastirq = 0;
	}

	printk(KERN_INFO "fimc%d s_fmt width = %d, height = %d\n", ctrl->id, \
				cap->fmt.width, cap->fmt.height);

	/* WriteBack doesn't have subdev_call */
	if (ctrl->cam->id == CAMERA_WB || ctrl->cam->id == CAMERA_WB_B) {
		mutex_unlock(&ctrl->v4l2_lock);
		return 0;
	}

	if (ctrl->is.sd && fimc_cam_use) {
		ctrl->is.mbus_fmt.code = V4L2_MBUS_FMT_SGRBG10_1X10;
		is_ctrl.id = V4L2_CID_IS_GET_SENSOR_WIDTH;
		is_ctrl.value = 0;
		v4l2_subdev_call(ctrl->is.sd, core, g_ctrl, &is_ctrl);
		ctrl->is.fmt.width = ctrl->is.mbus_fmt.width = is_ctrl.value;

		is_ctrl.id = V4L2_CID_IS_GET_SENSOR_HEIGHT;
		is_ctrl.value = 0;
		v4l2_subdev_call(ctrl->is.sd, core, g_ctrl, &is_ctrl);
		ctrl->is.fmt.height = ctrl->is.mbus_fmt.height = is_ctrl.value;
		/* default offset values */
		ctrl->is.offset_x = 16;
		ctrl->is.offset_y = 12;
	}

	fimc_hwset_reset(ctrl);

	mutex_unlock(&ctrl->v4l2_lock);
	printk(KERN_INFO "%s -- FIMC%d\n", __func__, ctrl->id);

	return ret;
}

int fimc_try_fmt_vid_capture(struct file *file, void *fh, struct v4l2_format *f)
{
	/* Not implement */
	return -ENOTTY;
}

static int fimc_alloc_buffers(struct fimc_control *ctrl,
			int plane, int size, int align, int bpp, int use_paddingbuf, int pad_size)
{
	struct fimc_capinfo *cap = ctrl->cap;
	int i, j;
	int plane_length[4] = {0, };
#ifdef	CONFIG_VIDEO_SAMSUNG_USE_DMA_MEM
	int alloc_size, err;
	struct cma_info mem_info;
#endif

	switch (plane) {
	case 1:
		if (align) {
		plane_length[0] = PAGE_ALIGN((size*bpp) >> 3);
		plane_length[1] = 0;
		plane_length[2] = 0;
		} else {
			plane_length[0] = (size*bpp) >> 3;
			plane_length[1] = 0;
			plane_length[2] = 0;
		}
		break;
		/* In case of 2, only NV12 and NV12T is supported. */
	case 2:
		if (align) {
			plane_length[0] = PAGE_ALIGN((size*8) >> 3);
			plane_length[1] = PAGE_ALIGN((size*(bpp-8)) >> 3);
			plane_length[2] = 0;
			fimc_info2("plane_length[0] = %d, plane_length[1] = %d\n" \
					, plane_length[0], plane_length[1]);
		} else {
			plane_length[0] = ((size*8) >> 3);
			plane_length[1] = ((size*(bpp-8)) >> 3);
			plane_length[2] = 0;
			fimc_info2("plane_length[0] = %d, plane_length[1] = %d\n" \
					, plane_length[0], plane_length[1]);
		}

		break;
		/* In case of 3
		 * YUV422 : 8 / 4 / 4 (bits)
		 * YUV420 : 8 / 2 / 2 (bits)
	 * 3rd plane have to consider page align for mmap */
	case 3:
		if (align) {
			plane_length[0] = (size*8) >> 3;
			plane_length[1] = (size*((bpp-8)/2)) >> 3;
			plane_length[2] = PAGE_ALIGN((size*bpp)>>3) - plane_length[0]
				- plane_length[1];
		} else {
			plane_length[0] = (size*8) >> 3;
			plane_length[1] = (size*((bpp-8)/2)) >> 3;
			plane_length[2] = ((size*bpp)>>3) - plane_length[0]
				- plane_length[1];
		}
		break;
	default:
		fimc_err("impossible!\n");
		return -ENOMEM;
	}

	if (use_paddingbuf) {
		plane_length[plane] = pad_size;
		cap->pktdata_plane = plane;
	} else
		plane_length[plane] = 0;

#ifdef	CONFIG_VIDEO_SAMSUNG_USE_DMA_MEM
	if (align) {
		alloc_size = (ALIGN(plane_length[0], align) +
				ALIGN(plane_length[1], align)
				+ ALIGN(plane_length[2], align))
				* cap->nr_bufs;
	} else {
		alloc_size = (plane_length[0] + plane_length[1] +
				plane_length[2]) * cap->nr_bufs;
	}

	err = cma_info(&mem_info, ctrl->dev, 0);
	printk(KERN_DEBUG "%s : [cma_info] start_addr : 0x%x, end_addr	: 0x%x, "
			"total_size : 0x%x, free_size : 0x%x req_size : 0x%x\n",
			__func__, mem_info.lower_bound,	mem_info.upper_bound,
			mem_info.total_size, mem_info.free_size, alloc_size);

	if (err || (mem_info.free_size < alloc_size)) {
		fimc_err("%s: get cma info failed\n", __func__);
		ctrl->mem.size = 0;
		ctrl->mem.base = 0;
		return -ENOMEM;
	} else {
		ctrl->mem.size = alloc_size;
		ctrl->mem.base = (dma_addr_t)cma_alloc
			(ctrl->dev, ctrl->cma_name, (size_t) alloc_size, align);
	}

	ctrl->mem.curr = ctrl->mem.base;
#endif
	for (i = 0; i < cap->nr_bufs; i++) {
		for (j = 0; j < plane; j++) {
			cap->bufs[i].length[j] = plane_length[j];
			fimc_dma_alloc(ctrl, &cap->bufs[i], j, align);

			if (!cap->bufs[i].base[j])
				goto err_alloc;
		}
		if (use_paddingbuf) {
			cap->bufs[i].length[plane] = plane_length[plane];
			fimc_dma_alloc(ctrl, &cap->bufs[i], plane, align);

			cap->bufs[i].vaddr_pktdata = phys_to_virt(cap->bufs[i].base[plane]);
			/* printk(KERN_INFO "pktdata address = 0x%x, 0x%x\n"
				,cap->bufs[i].base[1], cap->bufs[i].vaddr_pktdata ); */

			if (!cap->bufs[i].base[plane])
				goto err_alloc;
		}
		cap->bufs[i].state = VIDEOBUF_PREPARED;
	}

	return 0;

err_alloc:
	for (i = 0; i < cap->nr_bufs; i++) {
		for (j = 0; j < plane; j++) {
			if (cap->bufs[i].base[j])
				fimc_dma_free(ctrl, &cap->bufs[i], j);
		}
		if (use_paddingbuf) {
			if (cap->bufs[i].base[plane])
				fimc_dma_free(ctrl, &cap->bufs[i], plane);
		}
		memset(&cap->bufs[i], 0, sizeof(cap->bufs[i]));
	}

	return -ENOMEM;
}

static void fimc_free_buffers(struct fimc_control *ctrl)
{
	struct fimc_capinfo *cap;
	int i;

	if (ctrl && ctrl->cap)
		cap = ctrl->cap;
	else
		return;

	for (i = 0; i < FIMC_PHYBUFS; i++) {
		memset(&cap->bufs[i], 0, sizeof(cap->bufs[i]));
		cap->bufs[i].state = VIDEOBUF_NEEDS_INIT;
	}

	ctrl->mem.curr = ctrl->mem.base;
}

#ifdef CONFIG_SLP_DMABUF
static int fimc_set_cap_num_plane(struct fimc_control *ctrl)
{
	struct fimc_capinfo *cap = ctrl->cap;

	switch (cap->fmt.pixelformat) {
	case V4L2_PIX_FMT_RGB32:        /* fall through */
	case V4L2_PIX_FMT_RGB565:       /* fall through */
	case V4L2_PIX_FMT_YUYV:         /* fall through */
	case V4L2_PIX_FMT_UYVY:         /* fall through */
	case V4L2_PIX_FMT_VYUY:         /* fall through */
	case V4L2_PIX_FMT_YVYU:         /* fall through */
	case V4L2_PIX_FMT_NV16:         /* fall through */
	case V4L2_PIX_FMT_NV61:         /* fall through */
	case V4L2_PIX_FMT_JPEG:
	case V4L2_PIX_FMT_INTERLEAVED:
		return PLANE_1;

	case V4L2_PIX_FMT_NV21:
	case V4L2_PIX_FMT_NV12:
	case V4L2_PIX_FMT_NV12T:
		return PLANE_2;

	case V4L2_PIX_FMT_YUV422P:      /* fall through */
	case V4L2_PIX_FMT_YUV420:
	case V4L2_PIX_FMT_YVU420:
		return PLANE_3;

	default:
		fimc_err("%s: Undefined format\n", __func__);
		break;
	}

	return 0;
}
#endif

int fimc_reqbufs_capture_mmap(void *fh, struct v4l2_requestbuffers *b)
{
	struct fimc_control *ctrl = fh;
	struct fimc_capinfo *cap = ctrl->cap;
	struct s3c_platform_fimc *pdata = to_fimc_plat(ctrl->dev);
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
	struct platform_device *pdev = to_platform_device(ctrl->dev);
#endif
	int ret = 0, i;
	int bpp = 0;
	int size = 0;

	if (!cap) {
		fimc_err("%s: no capture device info\n", __func__);
		return -ENODEV;
	}

	mutex_lock(&ctrl->v4l2_lock);

	/*  A count value of zero frees all buffers */
	if ((b->count == 0) || (b->count >= FIMC_CAPBUFS)) {
		/* aborting or finishing any DMA in progress */
		if (ctrl->status == FIMC_STREAMON)
			fimc_streamoff_capture(fh);
		for (i = 0; i < FIMC_CAPBUFS; i++) {
			fimc_dma_free(ctrl, &ctrl->cap->bufs[i], 0);
			fimc_dma_free(ctrl, &ctrl->cap->bufs[i], 1);
			fimc_dma_free(ctrl, &ctrl->cap->bufs[i], 2);
		}
#ifdef CONFIG_VIDEO_SAMSUNG_USE_DMA_MEM
		if (ctrl->mem.base) {
			cma_free(ctrl->mem.base);
			ctrl->mem.base = 0;
			ctrl->mem.size = 0;
		}
#endif

		mutex_unlock(&ctrl->v4l2_lock);
		return 0;
	}
	/* free previous buffers */
	if ((cap->nr_bufs >= 0) && (cap->nr_bufs < FIMC_CAPBUFS)) {
		fimc_info1("%s : remained previous buffer count is %d\n", __func__,
				cap->nr_bufs);
		for (i = 0; i < cap->nr_bufs; i++) {
			fimc_dma_free(ctrl, &cap->bufs[i], 0);
			fimc_dma_free(ctrl, &cap->bufs[i], 1);
			fimc_dma_free(ctrl, &cap->bufs[i], 2);
			fimc_dma_free(ctrl, &cap->bufs[i], 3);
		}
#ifdef CONFIG_VIDEO_SAMSUNG_USE_DMA_MEM
		if (ctrl->mem.base) {
			cma_free(ctrl->mem.base);
			ctrl->mem.base = 0;
			ctrl->mem.size = 0;
		}
#endif
	}
	fimc_free_buffers(ctrl);

	cap->nr_bufs = b->count;
	if (pdata->hw_ver >= 0x51) {
#if (defined(CONFIG_EXYNOS_DEV_PD) && defined(CONFIG_PM_RUNTIME))
		if (ctrl->power_status == FIMC_POWER_OFF) {
			pm_runtime_get_sync(&pdev->dev);
		}
#endif
		fimc_hw_reset_output_buf_sequence(ctrl);
		for (i = 0; i < cap->nr_bufs; i++) {
			fimc_hwset_output_buf_sequence(ctrl, i, 1);
			cap->bufs[i].id = i;
			cap->bufs[i].state = VIDEOBUF_NEEDS_INIT;

			/* initialize list */
			INIT_LIST_HEAD(&cap->bufs[i].list);
		}
		fimc_info1("%s: requested %d buffers\n", __func__, b->count);
		fimc_info1("%s: sequence[%d]\n", __func__,
				fimc_hwget_output_buf_sequence(ctrl));
		INIT_LIST_HEAD(&cap->outgoing_q);
	}
	if (pdata->hw_ver < 0x51) {
		INIT_LIST_HEAD(&cap->inq);
		for (i = 0; i < cap->nr_bufs; i++) {
			cap->bufs[i].id = i;
			cap->bufs[i].state = VIDEOBUF_NEEDS_INIT;

			/* initialize list */
			INIT_LIST_HEAD(&cap->bufs[i].list);
		}
	}

	if (cap->pktdata_enable)
		cap->pktdata_size = 0x1000;

	bpp = fimc_fmt_depth(ctrl, &cap->fmt);

	switch (cap->fmt.pixelformat) {
	case V4L2_PIX_FMT_RGB32:	/* fall through */
	case V4L2_PIX_FMT_RGB565:	/* fall through */
	case V4L2_PIX_FMT_YUYV:		/* fall through */
	case V4L2_PIX_FMT_UYVY:		/* fall through */
	case V4L2_PIX_FMT_VYUY:		/* fall through */
	case V4L2_PIX_FMT_YVYU:		/* fall through */
	case V4L2_PIX_FMT_NV16:		/* fall through */
	case V4L2_PIX_FMT_NV61:		/* fall through */
		fimc_info1("%s : 1plane\n", __func__);
		ret = fimc_alloc_buffers(ctrl, 1,
			cap->fmt.width * cap->fmt.height, SZ_4K, bpp, cap->pktdata_enable, cap->pktdata_size);
		break;

	case V4L2_PIX_FMT_NV21:
		fimc_info1("%s : 2plane for NV21 w %d h %d\n", __func__,
				cap->fmt.width, cap->fmt.height);
		ret = fimc_alloc_buffers(ctrl, 2,
			cap->fmt.width * cap->fmt.height, 0, bpp, cap->pktdata_enable, cap->pktdata_size);
		break;

	case V4L2_PIX_FMT_NV12:
		fimc_info1("%s : 2plane for NV12\n", __func__);
		ret = fimc_alloc_buffers(ctrl, 2,
			cap->fmt.width * cap->fmt.height, SZ_64K, bpp, cap->pktdata_enable, cap->pktdata_size);
		break;

	case V4L2_PIX_FMT_NV12T:
		fimc_info1("%s : 2plane for NV12T\n", __func__);
		ret = fimc_alloc_buffers(ctrl, 2,
			ALIGN(cap->fmt.width, 128) * ALIGN(cap->fmt.height, 32),
			SZ_64K, bpp, cap->pktdata_enable, cap->pktdata_size);
		break;

	case V4L2_PIX_FMT_YUV422P:	/* fall through */
	case V4L2_PIX_FMT_YUV420:
	case V4L2_PIX_FMT_YVU420:
		fimc_info1("%s : 3plane\n", __func__);
		ret = fimc_alloc_buffers(ctrl, 3,
			cap->fmt.width * cap->fmt.height, 0, bpp, cap->pktdata_enable, cap->pktdata_size);
		break;

	case V4L2_PIX_FMT_JPEG:
		fimc_info1("%s : JPEG 1plane\n", __func__);
		size = fimc_camera_get_jpeg_memsize(ctrl);
		fimc_info2("%s : JPEG 1plane size = %x\n", __func__, size);
		ret = fimc_alloc_buffers(ctrl, 1, size, 0, 8, cap->pktdata_enable, cap->pktdata_size);
		break;
	case V4L2_PIX_FMT_INTERLEAVED:
		fimc_info1("%s : Interleaved Format\n", __func__);
		size = fimc_camera_get_jpeg_memsize(ctrl); /*0xA00000*/
		fimc_info2("%s : Interleaved size = %x\n", __func__, size);
		ret = fimc…