[media] rename drivers/media/video as .../platform

The remaining drivers are mostly platform drivers. Name the
dir to reflect it.

It makes sense to latter break it into a few other dirs.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 2348 deletions

diff --git a/drivers/media/video/omap3isp/isppreview.c b/drivers/media/video/omap3isp/isppreview.c
deleted file mode 100644
index 1ae1c09..0000000
--- a/drivers/media/video/omap3isp/isppreview.c
+++ /dev/null
@@ -1,2348 +0,0 @@
-/*
- * isppreview.c
- *
- * TI OMAP3 ISP driver - Preview module
- *
- * Copyright (C) 2010 Nokia Corporation
- * Copyright (C) 2009 Texas Instruments, Inc.
- *
- * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- *	     Sakari Ailus <sakari.ailus@iki.fi>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-
-#include <linux/device.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/uaccess.h>
-
-#include "isp.h"
-#include "ispreg.h"
-#include "isppreview.h"
-
-/* Default values in Office Fluorescent Light for RGBtoRGB Blending */
-static struct omap3isp_prev_rgbtorgb flr_rgb2rgb = {
-	{	/* RGB-RGB Matrix */
-		{0x01E2, 0x0F30, 0x0FEE},
-		{0x0F9B, 0x01AC, 0x0FB9},
-		{0x0FE0, 0x0EC0, 0x0260}
-	},	/* RGB Offset */
-	{0x0000, 0x0000, 0x0000}
-};
-
-/* Default values in Office Fluorescent Light for RGB to YUV Conversion*/
-static struct omap3isp_prev_csc flr_prev_csc = {
-	{	/* CSC Coef Matrix */
-		{66, 129, 25},
-		{-38, -75, 112},
-		{112, -94 , -18}
-	},	/* CSC Offset */
-	{0x0, 0x0, 0x0}
-};
-
-/* Default values in Office Fluorescent Light for CFA Gradient*/
-#define FLR_CFA_GRADTHRS_HORZ	0x28
-#define FLR_CFA_GRADTHRS_VERT	0x28
-
-/* Default values in Office Fluorescent Light for Chroma Suppression*/
-#define FLR_CSUP_GAIN		0x0D
-#define FLR_CSUP_THRES		0xEB
-
-/* Default values in Office Fluorescent Light for Noise Filter*/
-#define FLR_NF_STRGTH		0x03
-
-/* Default values for White Balance */
-#define FLR_WBAL_DGAIN		0x100
-#define FLR_WBAL_COEF		0x20
-
-/* Default values in Office Fluorescent Light for Black Adjustment*/
-#define FLR_BLKADJ_BLUE		0x0
-#define FLR_BLKADJ_GREEN	0x0
-#define FLR_BLKADJ_RED		0x0
-
-#define DEF_DETECT_CORRECT_VAL	0xe
-
-/*
- * Margins and image size limits.
- *
- * The preview engine crops several rows and columns internally depending on
- * which filters are enabled. To avoid format changes when the filters are
- * enabled or disabled (which would prevent them from being turned on or off
- * during streaming), the driver assumes all the filters are enabled when
- * computing sink crop and source format limits.
- *
- * If a filter is disabled, additional cropping is automatically added at the
- * preview engine input by the driver to avoid overflow at line and frame end.
- * This is completely transparent for applications.
- *
- * Median filter		4 pixels
- * Noise filter,
- * Faulty pixels correction	4 pixels, 4 lines
- * CFA filter			4 pixels, 4 lines in Bayer mode
- *					  2 lines in other modes
- * Color suppression		2 pixels
- * or luma enhancement
- * -------------------------------------------------------------
- * Maximum total		14 pixels, 8 lines
- *
- * The color suppression and luma enhancement filters are applied after bayer to
- * YUV conversion. They thus can crop one pixel on the left and one pixel on the
- * right side of the image without changing the color pattern. When both those
- * filters are disabled, the driver must crop the two pixels on the same side of
- * the image to avoid changing the bayer pattern. The left margin is thus set to
- * 8 pixels and the right margin to 6 pixels.
- */
-
-#define PREV_MARGIN_LEFT	8
-#define PREV_MARGIN_RIGHT	6
-#define PREV_MARGIN_TOP		4
-#define PREV_MARGIN_BOTTOM	4
-
-#define PREV_MIN_IN_WIDTH	64
-#define PREV_MIN_IN_HEIGHT	8
-#define PREV_MAX_IN_HEIGHT	16384
-
-#define PREV_MIN_OUT_WIDTH		0
-#define PREV_MIN_OUT_HEIGHT		0
-#define PREV_MAX_OUT_WIDTH_REV_1	1280
-#define PREV_MAX_OUT_WIDTH_REV_2	3300
-#define PREV_MAX_OUT_WIDTH_REV_15	4096
-
-/*
- * Coeficient Tables for the submodules in Preview.
- * Array is initialised with the values from.the tables text file.
- */
-
-/*
- * CFA Filter Coefficient Table
- *
- */
-static u32 cfa_coef_table[4][OMAP3ISP_PREV_CFA_BLK_SIZE] = {
-#include "cfa_coef_table.h"
-};
-
-/*
- * Default Gamma Correction Table - All components
- */
-static u32 gamma_table[] = {
-#include "gamma_table.h"
-};
-
-/*
- * Noise Filter Threshold table
- */
-static u32 noise_filter_table[] = {
-#include "noise_filter_table.h"
-};
-
-/*
- * Luminance Enhancement Table
- */
-static u32 luma_enhance_table[] = {
-#include "luma_enhance_table.h"
-};
-
-/*
- * preview_config_luma_enhancement - Configure the Luminance Enhancement table
- */
-static void
-preview_config_luma_enhancement(struct isp_prev_device *prev,
-				const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_luma *yt = &params->luma;
-	unsigned int i;
-
-	isp_reg_writel(isp, ISPPRV_YENH_TABLE_ADDR,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
-	for (i = 0; i < OMAP3ISP_PREV_YENH_TBL_SIZE; i++) {
-		isp_reg_writel(isp, yt->table[i],
-			       OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
-	}
-}
-
-/*
- * preview_enable_luma_enhancement - Enable/disable Luminance Enhancement
- */
-static void
-preview_enable_luma_enhancement(struct isp_prev_device *prev, bool enable)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	if (enable)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_YNENHEN);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_YNENHEN);
-}
-
-/*
- * preview_enable_invalaw - Enable/disable Inverse A-Law decompression
- */
-static void preview_enable_invalaw(struct isp_prev_device *prev, bool enable)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	if (enable)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_WIDTH | ISPPRV_PCR_INVALAW);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_WIDTH | ISPPRV_PCR_INVALAW);
-}
-
-/*
- * preview_config_hmed - Configure the Horizontal Median Filter
- */
-static void preview_config_hmed(struct isp_prev_device *prev,
-				const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_hmed *hmed = &params->hmed;
-
-	isp_reg_writel(isp, (hmed->odddist == 1 ? 0 : ISPPRV_HMED_ODDDIST) |
-		       (hmed->evendist == 1 ? 0 : ISPPRV_HMED_EVENDIST) |
-		       (hmed->thres << ISPPRV_HMED_THRESHOLD_SHIFT),
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_HMED);
-}
-
-/*
- * preview_enable_hmed - Enable/disable the Horizontal Median Filter
- */
-static void preview_enable_hmed(struct isp_prev_device *prev, bool enable)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	if (enable)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_HMEDEN);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_HMEDEN);
-}
-
-/*
- * preview_config_cfa - Configure CFA Interpolation for Bayer formats
- *
- * The CFA table is organised in four blocks, one per Bayer component. The
- * hardware expects blocks to follow the Bayer order of the input data, while
- * the driver stores the table in GRBG order in memory. The blocks need to be
- * reordered to support non-GRBG Bayer patterns.
- */
-static void preview_config_cfa(struct isp_prev_device *prev,
-			       const struct prev_params *params)
-{
-	static const unsigned int cfa_coef_order[4][4] = {
-		{ 0, 1, 2, 3 }, /* GRBG */
-		{ 1, 0, 3, 2 }, /* RGGB */
-		{ 2, 3, 0, 1 }, /* BGGR */
-		{ 3, 2, 1, 0 }, /* GBRG */
-	};
-	const unsigned int *order = cfa_coef_order[prev->params.cfa_order];
-	const struct omap3isp_prev_cfa *cfa = &params->cfa;
-	struct isp_device *isp = to_isp_device(prev);
-	unsigned int i;
-	unsigned int j;
-
-	isp_reg_writel(isp,
-		(cfa->gradthrs_vert << ISPPRV_CFA_GRADTH_VER_SHIFT) |
-		(cfa->gradthrs_horz << ISPPRV_CFA_GRADTH_HOR_SHIFT),
-		OMAP3_ISP_IOMEM_PREV, ISPPRV_CFA);
-
-	isp_reg_writel(isp, ISPPRV_CFA_TABLE_ADDR,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
-
-	for (i = 0; i < 4; ++i) {
-		const __u32 *block = cfa->table[order[i]];
-
-		for (j = 0; j < OMAP3ISP_PREV_CFA_BLK_SIZE; ++j)
-			isp_reg_writel(isp, block[j], OMAP3_ISP_IOMEM_PREV,
-				       ISPPRV_SET_TBL_DATA);
-	}
-}
-
-/*
- * preview_config_chroma_suppression - Configure Chroma Suppression
- */
-static void
-preview_config_chroma_suppression(struct isp_prev_device *prev,
-				  const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_csup *cs = &params->csup;
-
-	isp_reg_writel(isp,
-		       cs->gain | (cs->thres << ISPPRV_CSUP_THRES_SHIFT) |
-		       (cs->hypf_en << ISPPRV_CSUP_HPYF_SHIFT),
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_CSUP);
-}
-
-/*
- * preview_enable_chroma_suppression - Enable/disable Chrominance Suppression
- */
-static void
-preview_enable_chroma_suppression(struct isp_prev_device *prev, bool enable)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	if (enable)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_SUPEN);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_SUPEN);
-}
-
-/*
- * preview_config_whitebalance - Configure White Balance parameters
- *
- * Coefficient matrix always with default values.
- */
-static void
-preview_config_whitebalance(struct isp_prev_device *prev,
-			    const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_wbal *wbal = &params->wbal;
-	u32 val;
-
-	isp_reg_writel(isp, wbal->dgain, OMAP3_ISP_IOMEM_PREV, ISPPRV_WB_DGAIN);
-
-	val = wbal->coef0 << ISPPRV_WBGAIN_COEF0_SHIFT;
-	val |= wbal->coef1 << ISPPRV_WBGAIN_COEF1_SHIFT;
-	val |= wbal->coef2 << ISPPRV_WBGAIN_COEF2_SHIFT;
-	val |= wbal->coef3 << ISPPRV_WBGAIN_COEF3_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_WBGAIN);
-
-	isp_reg_writel(isp,
-		       ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N0_0_SHIFT |
-		       ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N0_1_SHIFT |
-		       ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N0_2_SHIFT |
-		       ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N0_3_SHIFT |
-		       ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N1_0_SHIFT |
-		       ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N1_1_SHIFT |
-		       ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N1_2_SHIFT |
-		       ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N1_3_SHIFT |
-		       ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N2_0_SHIFT |
-		       ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N2_1_SHIFT |
-		       ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N2_2_SHIFT |
-		       ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N2_3_SHIFT |
-		       ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N3_0_SHIFT |
-		       ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N3_1_SHIFT |
-		       ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N3_2_SHIFT |
-		       ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N3_3_SHIFT,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_WBSEL);
-}
-
-/*
- * preview_config_blkadj - Configure Black Adjustment
- */
-static void
-preview_config_blkadj(struct isp_prev_device *prev,
-		      const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_blkadj *blkadj = &params->blkadj;
-
-	isp_reg_writel(isp, (blkadj->blue << ISPPRV_BLKADJOFF_B_SHIFT) |
-		       (blkadj->green << ISPPRV_BLKADJOFF_G_SHIFT) |
-		       (blkadj->red << ISPPRV_BLKADJOFF_R_SHIFT),
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_BLKADJOFF);
-}
-
-/*
- * preview_config_rgb_blending - Configure RGB-RGB Blending
- */
-static void
-preview_config_rgb_blending(struct isp_prev_device *prev,
-			    const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_rgbtorgb *rgbrgb = &params->rgb2rgb;
-	u32 val;
-
-	val = (rgbrgb->matrix[0][0] & 0xfff) << ISPPRV_RGB_MAT1_MTX_RR_SHIFT;
-	val |= (rgbrgb->matrix[0][1] & 0xfff) << ISPPRV_RGB_MAT1_MTX_GR_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT1);
-
-	val = (rgbrgb->matrix[0][2] & 0xfff) << ISPPRV_RGB_MAT2_MTX_BR_SHIFT;
-	val |= (rgbrgb->matrix[1][0] & 0xfff) << ISPPRV_RGB_MAT2_MTX_RG_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT2);
-
-	val = (rgbrgb->matrix[1][1] & 0xfff) << ISPPRV_RGB_MAT3_MTX_GG_SHIFT;
-	val |= (rgbrgb->matrix[1][2] & 0xfff) << ISPPRV_RGB_MAT3_MTX_BG_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT3);
-
-	val = (rgbrgb->matrix[2][0] & 0xfff) << ISPPRV_RGB_MAT4_MTX_RB_SHIFT;
-	val |= (rgbrgb->matrix[2][1] & 0xfff) << ISPPRV_RGB_MAT4_MTX_GB_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT4);
-
-	val = (rgbrgb->matrix[2][2] & 0xfff) << ISPPRV_RGB_MAT5_MTX_BB_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT5);
-
-	val = (rgbrgb->offset[0] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFR_SHIFT;
-	val |= (rgbrgb->offset[1] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFG_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF1);
-
-	val = (rgbrgb->offset[2] & 0x3ff) << ISPPRV_RGB_OFF2_MTX_OFFB_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF2);
-}
-
-/*
- * preview_config_csc - Configure Color Space Conversion (RGB to YCbYCr)
- */
-static void
-preview_config_csc(struct isp_prev_device *prev,
-		   const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_csc *csc = &params->csc;
-	u32 val;
-
-	val = (csc->matrix[0][0] & 0x3ff) << ISPPRV_CSC0_RY_SHIFT;
-	val |= (csc->matrix[0][1] & 0x3ff) << ISPPRV_CSC0_GY_SHIFT;
-	val |= (csc->matrix[0][2] & 0x3ff) << ISPPRV_CSC0_BY_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC0);
-
-	val = (csc->matrix[1][0] & 0x3ff) << ISPPRV_CSC1_RCB_SHIFT;
-	val |= (csc->matrix[1][1] & 0x3ff) << ISPPRV_CSC1_GCB_SHIFT;
-	val |= (csc->matrix[1][2] & 0x3ff) << ISPPRV_CSC1_BCB_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC1);
-
-	val = (csc->matrix[2][0] & 0x3ff) << ISPPRV_CSC2_RCR_SHIFT;
-	val |= (csc->matrix[2][1] & 0x3ff) << ISPPRV_CSC2_GCR_SHIFT;
-	val |= (csc->matrix[2][2] & 0x3ff) << ISPPRV_CSC2_BCR_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC2);
-
-	val = (csc->offset[0] & 0xff) << ISPPRV_CSC_OFFSET_Y_SHIFT;
-	val |= (csc->offset[1] & 0xff) << ISPPRV_CSC_OFFSET_CB_SHIFT;
-	val |= (csc->offset[2] & 0xff) << ISPPRV_CSC_OFFSET_CR_SHIFT;
-	isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC_OFFSET);
-}
-
-/*
- * preview_config_yc_range - Configure the max and min Y and C values
- */
-static void
-preview_config_yc_range(struct isp_prev_device *prev,
-			const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_yclimit *yc = &params->yclimit;
-
-	isp_reg_writel(isp,
-		       yc->maxC << ISPPRV_SETUP_YC_MAXC_SHIFT |
-		       yc->maxY << ISPPRV_SETUP_YC_MAXY_SHIFT |
-		       yc->minC << ISPPRV_SETUP_YC_MINC_SHIFT |
-		       yc->minY << ISPPRV_SETUP_YC_MINY_SHIFT,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_SETUP_YC);
-}
-
-/*
- * preview_config_dcor - Configure Couplet Defect Correction
- */
-static void
-preview_config_dcor(struct isp_prev_device *prev,
-		    const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_dcor *dcor = &params->dcor;
-
-	isp_reg_writel(isp, dcor->detect_correct[0],
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR0);
-	isp_reg_writel(isp, dcor->detect_correct[1],
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR1);
-	isp_reg_writel(isp, dcor->detect_correct[2],
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR2);
-	isp_reg_writel(isp, dcor->detect_correct[3],
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR3);
-	isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			ISPPRV_PCR_DCCOUP,
-			dcor->couplet_mode_en ? ISPPRV_PCR_DCCOUP : 0);
-}
-
-/*
- * preview_enable_dcor - Enable/disable Couplet Defect Correction
- */
-static void preview_enable_dcor(struct isp_prev_device *prev, bool enable)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	if (enable)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_DCOREN);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_DCOREN);
-}
-
-/*
- * preview_enable_drkframe_capture - Enable/disable Dark Frame Capture
- */
-static void
-preview_enable_drkframe_capture(struct isp_prev_device *prev, bool enable)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	if (enable)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_DRKFCAP);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_DRKFCAP);
-}
-
-/*
- * preview_enable_drkframe - Enable/disable Dark Frame Subtraction
- */
-static void preview_enable_drkframe(struct isp_prev_device *prev, bool enable)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	if (enable)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_DRKFEN);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_DRKFEN);
-}
-
-/*
- * preview_config_noisefilter - Configure the Noise Filter
- */
-static void
-preview_config_noisefilter(struct isp_prev_device *prev,
-			   const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_nf *nf = &params->nf;
-	unsigned int i;
-
-	isp_reg_writel(isp, nf->spread, OMAP3_ISP_IOMEM_PREV, ISPPRV_NF);
-	isp_reg_writel(isp, ISPPRV_NF_TABLE_ADDR,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
-	for (i = 0; i < OMAP3ISP_PREV_NF_TBL_SIZE; i++) {
-		isp_reg_writel(isp, nf->table[i],
-			       OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
-	}
-}
-
-/*
- * preview_enable_noisefilter - Enable/disable the Noise Filter
- */
-static void
-preview_enable_noisefilter(struct isp_prev_device *prev, bool enable)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	if (enable)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_NFEN);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_NFEN);
-}
-
-/*
- * preview_config_gammacorrn - Configure the Gamma Correction tables
- */
-static void
-preview_config_gammacorrn(struct isp_prev_device *prev,
-			  const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	const struct omap3isp_prev_gtables *gt = &params->gamma;
-	unsigned int i;
-
-	isp_reg_writel(isp, ISPPRV_REDGAMMA_TABLE_ADDR,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
-	for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++)
-		isp_reg_writel(isp, gt->red[i], OMAP3_ISP_IOMEM_PREV,
-			       ISPPRV_SET_TBL_DATA);
-
-	isp_reg_writel(isp, ISPPRV_GREENGAMMA_TABLE_ADDR,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
-	for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++)
-		isp_reg_writel(isp, gt->green[i], OMAP3_ISP_IOMEM_PREV,
-			       ISPPRV_SET_TBL_DATA);
-
-	isp_reg_writel(isp, ISPPRV_BLUEGAMMA_TABLE_ADDR,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
-	for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++)
-		isp_reg_writel(isp, gt->blue[i], OMAP3_ISP_IOMEM_PREV,
-			       ISPPRV_SET_TBL_DATA);
-}
-
-/*
- * preview_enable_gammacorrn - Enable/disable Gamma Correction
- *
- * When gamma correction is disabled, the module is bypassed and its output is
- * the 8 MSB of the 10-bit input .
- */
-static void
-preview_enable_gammacorrn(struct isp_prev_device *prev, bool enable)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	if (enable)
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_GAMMA_BYPASS);
-	else
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_GAMMA_BYPASS);
-}
-
-/*
- * preview_config_contrast - Configure the Contrast
- *
- * Value should be programmed before enabling the module.
- */
-static void
-preview_config_contrast(struct isp_prev_device *prev,
-			const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT,
-			0xff << ISPPRV_CNT_BRT_CNT_SHIFT,
-			params->contrast << ISPPRV_CNT_BRT_CNT_SHIFT);
-}
-
-/*
- * preview_config_brightness - Configure the Brightness
- */
-static void
-preview_config_brightness(struct isp_prev_device *prev,
-			  const struct prev_params *params)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT,
-			0xff << ISPPRV_CNT_BRT_BRT_SHIFT,
-			params->brightness << ISPPRV_CNT_BRT_BRT_SHIFT);
-}
-
-/*
- * preview_update_contrast - Updates the contrast.
- * @contrast: Pointer to hold the current programmed contrast value.
- *
- * Value should be programmed before enabling the module.
- */
-static void
-preview_update_contrast(struct isp_prev_device *prev, u8 contrast)
-{
-	struct prev_params *params;
-	unsigned long flags;
-
-	spin_lock_irqsave(&prev->params.lock, flags);
-	params = (prev->params.active & OMAP3ISP_PREV_CONTRAST)
-	       ? &prev->params.params[0] : &prev->params.params[1];
-
-	if (params->contrast != (contrast * ISPPRV_CONTRAST_UNITS)) {
-		params->contrast = contrast * ISPPRV_CONTRAST_UNITS;
-		params->update |= OMAP3ISP_PREV_CONTRAST;
-	}
-	spin_unlock_irqrestore(&prev->params.lock, flags);
-}
-
-/*
- * preview_update_brightness - Updates the brightness in preview module.
- * @brightness: Pointer to hold the current programmed brightness value.
- *
- */
-static void
-preview_update_brightness(struct isp_prev_device *prev, u8 brightness)
-{
-	struct prev_params *params;
-	unsigned long flags;
-
-	spin_lock_irqsave(&prev->params.lock, flags);
-	params = (prev->params.active & OMAP3ISP_PREV_BRIGHTNESS)
-	       ? &prev->params.params[0] : &prev->params.params[1];
-
-	if (params->brightness != (brightness * ISPPRV_BRIGHT_UNITS)) {
-		params->brightness = brightness * ISPPRV_BRIGHT_UNITS;
-		params->update |= OMAP3ISP_PREV_BRIGHTNESS;
-	}
-	spin_unlock_irqrestore(&prev->params.lock, flags);
-}
-
-static u32
-preview_params_lock(struct isp_prev_device *prev, u32 update, bool shadow)
-{
-	u32 active = prev->params.active;
-
-	if (shadow) {
-		/* Mark all shadow parameters we are going to touch as busy. */
-		prev->params.params[0].busy |= ~active & update;
-		prev->params.params[1].busy |= active & update;
-	} else {
-		/* Mark all active parameters we are going to touch as busy. */
-		update = (prev->params.params[0].update & active)
-		       | (prev->params.params[1].update & ~active);
-
-		prev->params.params[0].busy |= active & update;
-		prev->params.params[1].busy |= ~active & update;
-	}
-
-	return update;
-}
-
-static void
-preview_params_unlock(struct isp_prev_device *prev, u32 update, bool shadow)
-{
-	u32 active = prev->params.active;
-
-	if (shadow) {
-		/* Set the update flag for shadow parameters that have been
-		 * updated and clear the busy flag for all shadow parameters.
-		 */
-		prev->params.params[0].update |= (~active & update);
-		prev->params.params[1].update |= (active & update);
-		prev->params.params[0].busy &= active;
-		prev->params.params[1].busy &= ~active;
-	} else {
-		/* Clear the update flag for active parameters that have been
-		 * applied and the busy flag for all active parameters.
-		 */
-		prev->params.params[0].update &= ~(active & update);
-		prev->params.params[1].update &= ~(~active & update);
-		prev->params.params[0].busy &= ~active;
-		prev->params.params[1].busy &= active;
-	}
-}
-
-static void preview_params_switch(struct isp_prev_device *prev)
-{
-	u32 to_switch;
-
-	/* Switch active parameters with updated shadow parameters when the
-	 * shadow parameter has been updated and neither the active not the
-	 * shadow parameter is busy.
-	 */
-	to_switch = (prev->params.params[0].update & ~prev->params.active)
-		  | (prev->params.params[1].update & prev->params.active);
-	to_switch &= ~(prev->params.params[0].busy |
-		       prev->params.params[1].busy);
-	if (to_switch == 0)
-		return;
-
-	prev->params.active ^= to_switch;
-
-	/* Remove the update flag for the shadow copy of parameters we have
-	 * switched.
-	 */
-	prev->params.params[0].update &= ~(~prev->params.active & to_switch);
-	prev->params.params[1].update &= ~(prev->params.active & to_switch);
-}
-
-/* preview parameters update structure */
-struct preview_update {
-	void (*config)(struct isp_prev_device *, const struct prev_params *);
-	void (*enable)(struct isp_prev_device *, bool);
-	unsigned int param_offset;
-	unsigned int param_size;
-	unsigned int config_offset;
-	bool skip;
-};
-
-/* Keep the array indexed by the OMAP3ISP_PREV_* bit number. */
-static const struct preview_update update_attrs[] = {
-	/* OMAP3ISP_PREV_LUMAENH */ {
-		preview_config_luma_enhancement,
-		preview_enable_luma_enhancement,
-		offsetof(struct prev_params, luma),
-		FIELD_SIZEOF(struct prev_params, luma),
-		offsetof(struct omap3isp_prev_update_config, luma),
-	}, /* OMAP3ISP_PREV_INVALAW */ {
-		NULL,
-		preview_enable_invalaw,
-	}, /* OMAP3ISP_PREV_HRZ_MED */ {
-		preview_config_hmed,
-		preview_enable_hmed,
-		offsetof(struct prev_params, hmed),
-		FIELD_SIZEOF(struct prev_params, hmed),
-		offsetof(struct omap3isp_prev_update_config, hmed),
-	}, /* OMAP3ISP_PREV_CFA */ {
-		preview_config_cfa,
-		NULL,
-		offsetof(struct prev_params, cfa),
-		FIELD_SIZEOF(struct prev_params, cfa),
-		offsetof(struct omap3isp_prev_update_config, cfa),
-	}, /* OMAP3ISP_PREV_CHROMA_SUPP */ {
-		preview_config_chroma_suppression,
-		preview_enable_chroma_suppression,
-		offsetof(struct prev_params, csup),
-		FIELD_SIZEOF(struct prev_params, csup),
-		offsetof(struct omap3isp_prev_update_config, csup),
-	}, /* OMAP3ISP_PREV_WB */ {
-		preview_config_whitebalance,
-		NULL,
-		offsetof(struct prev_params, wbal),
-		FIELD_SIZEOF(struct prev_params, wbal),
-		offsetof(struct omap3isp_prev_update_config, wbal),
-	}, /* OMAP3ISP_PREV_BLKADJ */ {
-		preview_config_blkadj,
-		NULL,
-		offsetof(struct prev_params, blkadj),
-		FIELD_SIZEOF(struct prev_params, blkadj),
-		offsetof(struct omap3isp_prev_update_config, blkadj),
-	}, /* OMAP3ISP_PREV_RGB2RGB */ {
-		preview_config_rgb_blending,
-		NULL,
-		offsetof(struct prev_params, rgb2rgb),
-		FIELD_SIZEOF(struct prev_params, rgb2rgb),
-		offsetof(struct omap3isp_prev_update_config, rgb2rgb),
-	}, /* OMAP3ISP_PREV_COLOR_CONV */ {
-		preview_config_csc,
-		NULL,
-		offsetof(struct prev_params, csc),
-		FIELD_SIZEOF(struct prev_params, csc),
-		offsetof(struct omap3isp_prev_update_config, csc),
-	}, /* OMAP3ISP_PREV_YC_LIMIT */ {
-		preview_config_yc_range,
-		NULL,
-		offsetof(struct prev_params, yclimit),
-		FIELD_SIZEOF(struct prev_params, yclimit),
-		offsetof(struct omap3isp_prev_update_config, yclimit),
-	}, /* OMAP3ISP_PREV_DEFECT_COR */ {
-		preview_config_dcor,
-		preview_enable_dcor,
-		offsetof(struct prev_params, dcor),
-		FIELD_SIZEOF(struct prev_params, dcor),
-		offsetof(struct omap3isp_prev_update_config, dcor),
-	}, /* Previously OMAP3ISP_PREV_GAMMABYPASS, not used anymore */ {
-		NULL,
-		NULL,
-	}, /* OMAP3ISP_PREV_DRK_FRM_CAPTURE */ {
-		NULL,
-		preview_enable_drkframe_capture,
-	}, /* OMAP3ISP_PREV_DRK_FRM_SUBTRACT */ {
-		NULL,
-		preview_enable_drkframe,
-	}, /* OMAP3ISP_PREV_LENS_SHADING */ {
-		NULL,
-		preview_enable_drkframe,
-	}, /* OMAP3ISP_PREV_NF */ {
-		preview_config_noisefilter,
-		preview_enable_noisefilter,
-		offsetof(struct prev_params, nf),
-		FIELD_SIZEOF(struct prev_params, nf),
-		offsetof(struct omap3isp_prev_update_config, nf),
-	}, /* OMAP3ISP_PREV_GAMMA */ {
-		preview_config_gammacorrn,
-		preview_enable_gammacorrn,
-		offsetof(struct prev_params, gamma),
-		FIELD_SIZEOF(struct prev_params, gamma),
-		offsetof(struct omap3isp_prev_update_config, gamma),
-	}, /* OMAP3ISP_PREV_CONTRAST */ {
-		preview_config_contrast,
-		NULL,
-		0, 0, 0, true,
-	}, /* OMAP3ISP_PREV_BRIGHTNESS */ {
-		preview_config_brightness,
-		NULL,
-		0, 0, 0, true,
-	},
-};
-
-/*
- * preview_config - Copy and update local structure with userspace preview
- *                  configuration.
- * @prev: ISP preview engine
- * @cfg: Configuration
- *
- * Return zero if success or -EFAULT if the configuration can't be copied from
- * userspace.
- */
-static int preview_config(struct isp_prev_device *prev,
-			  struct omap3isp_prev_update_config *cfg)
-{
-	unsigned long flags;
-	unsigned int i;
-	int rval = 0;
-	u32 update;
-	u32 active;
-
-	if (cfg->update == 0)
-		return 0;
-
-	/* Mark the shadow parameters we're going to update as busy. */
-	spin_lock_irqsave(&prev->params.lock, flags);
-	preview_params_lock(prev, cfg->update, true);
-	active = prev->params.active;
-	spin_unlock_irqrestore(&prev->params.lock, flags);
-
-	update = 0;
-
-	for (i = 0; i < ARRAY_SIZE(update_attrs); i++) {
-		const struct preview_update *attr = &update_attrs[i];
-		struct prev_params *params;
-		unsigned int bit = 1 << i;
-
-		if (attr->skip || !(cfg->update & bit))
-			continue;
-
-		params = &prev->params.params[!!(active & bit)];
-
-		if (cfg->flag & bit) {
-			void __user *from = *(void * __user *)
-				((void *)cfg + attr->config_offset);
-			void *to = (void *)params + attr->param_offset;
-			size_t size = attr->param_size;
-
-			if (to && from && size) {
-				if (copy_from_user(to, from, size)) {
-					rval = -EFAULT;
-					break;
-				}
-			}
-			params->features |= bit;
-		} else {
-			params->features &= ~bit;
-		}
-
-		update |= bit;
-	}
-
-	spin_lock_irqsave(&prev->params.lock, flags);
-	preview_params_unlock(prev, update, true);
-	preview_params_switch(prev);
-	spin_unlock_irqrestore(&prev->params.lock, flags);
-
-	return rval;
-}
-
-/*
- * preview_setup_hw - Setup preview registers and/or internal memory
- * @prev: pointer to preview private structure
- * @update: Bitmask of parameters to setup
- * @active: Bitmask of parameters active in set 0
- * Note: can be called from interrupt context
- * Return none
- */
-static void preview_setup_hw(struct isp_prev_device *prev, u32 update,
-			     u32 active)
-{
-	unsigned int i;
-	u32 features;
-
-	if (update == 0)
-		return;
-
-	features = (prev->params.params[0].features & active)
-		 | (prev->params.params[1].features & ~active);
-
-	for (i = 0; i < ARRAY_SIZE(update_attrs); i++) {
-		const struct preview_update *attr = &update_attrs[i];
-		struct prev_params *params;
-		unsigned int bit = 1 << i;
-
-		if (!(update & bit))
-			continue;
-
-		params = &prev->params.params[!(active & bit)];
-
-		if (params->features & bit) {
-			if (attr->config)
-				attr->config(prev, params);
-			if (attr->enable)
-				attr->enable(prev, true);
-		} else {
-			if (attr->enable)
-				attr->enable(prev, false);
-		}
-	}
-}
-
-/*
- * preview_config_ycpos - Configure byte layout of YUV image.
- * @mode: Indicates the required byte layout.
- */
-static void
-preview_config_ycpos(struct isp_prev_device *prev,
-		     enum v4l2_mbus_pixelcode pixelcode)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	enum preview_ycpos_mode mode;
-
-	switch (pixelcode) {
-	case V4L2_MBUS_FMT_YUYV8_1X16:
-		mode = YCPOS_CrYCbY;
-		break;
-	case V4L2_MBUS_FMT_UYVY8_1X16:
-		mode = YCPOS_YCrYCb;
-		break;
-	default:
-		return;
-	}
-
-	isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			ISPPRV_PCR_YCPOS_CrYCbY,
-			mode << ISPPRV_PCR_YCPOS_SHIFT);
-}
-
-/*
- * preview_config_averager - Enable / disable / configure averager
- * @average: Average value to be configured.
- */
-static void preview_config_averager(struct isp_prev_device *prev, u8 average)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	isp_reg_writel(isp, ISPPRV_AVE_EVENDIST_2 << ISPPRV_AVE_EVENDIST_SHIFT |
-		       ISPPRV_AVE_ODDDIST_2 << ISPPRV_AVE_ODDDIST_SHIFT |
-		       average, OMAP3_ISP_IOMEM_PREV, ISPPRV_AVE);
-}
-
-
-/*
- * preview_config_input_format - Configure the input format
- * @prev: The preview engine
- * @format: Format on the preview engine sink pad
- *
- * Enable and configure CFA interpolation for Bayer formats and disable it for
- * greyscale formats.
- *
- * The CFA table is organised in four blocks, one per Bayer component. The
- * hardware expects blocks to follow the Bayer order of the input data, while
- * the driver stores the table in GRBG order in memory. The blocks need to be
- * reordered to support non-GRBG Bayer patterns.
- */
-static void preview_config_input_format(struct isp_prev_device *prev,
-					const struct v4l2_mbus_framefmt *format)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	struct prev_params *params;
-
-	switch (format->code) {
-	case V4L2_MBUS_FMT_SGRBG10_1X10:
-		prev->params.cfa_order = 0;
-		break;
-	case V4L2_MBUS_FMT_SRGGB10_1X10:
-		prev->params.cfa_order = 1;
-		break;
-	case V4L2_MBUS_FMT_SBGGR10_1X10:
-		prev->params.cfa_order = 2;
-		break;
-	case V4L2_MBUS_FMT_SGBRG10_1X10:
-		prev->params.cfa_order = 3;
-		break;
-	default:
-		/* Disable CFA for non-Bayer formats. */
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_CFAEN);
-		return;
-	}
-
-	isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_CFAEN);
-	isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			ISPPRV_PCR_CFAFMT_MASK, ISPPRV_PCR_CFAFMT_BAYER);
-
-	params = (prev->params.active & OMAP3ISP_PREV_CFA)
-	       ? &prev->params.params[0] : &prev->params.params[1];
-
-	preview_config_cfa(prev, params);
-}
-
-/*
- * preview_config_input_size - Configure the input frame size
- *
- * The preview engine crops several rows and columns internally depending on
- * which processing blocks are enabled. The driver assumes all those blocks are
- * enabled when reporting source pad formats to userspace. If this assumption is
- * not true, rows and columns must be manually cropped at the preview engine
- * input to avoid overflows at the end of lines and frames.
- *
- * See the explanation at the PREV_MARGIN_* definitions for more details.
- */
-static void preview_config_input_size(struct isp_prev_device *prev, u32 active)
-{
-	const struct v4l2_mbus_framefmt *format = &prev->formats[PREV_PAD_SINK];
-	struct isp_device *isp = to_isp_device(prev);
-	unsigned int sph = prev->crop.left;
-	unsigned int eph = prev->crop.left + prev->crop.width - 1;
-	unsigned int slv = prev->crop.top;
-	unsigned int elv = prev->crop.top + prev->crop.height - 1;
-	u32 features;
-
-	if (format->code != V4L2_MBUS_FMT_Y10_1X10) {
-		sph -= 2;
-		eph += 2;
-		slv -= 2;
-		elv += 2;
-	}
-
-	features = (prev->params.params[0].features & active)
-		 | (prev->params.params[1].features & ~active);
-
-	if (features & (OMAP3ISP_PREV_DEFECT_COR | OMAP3ISP_PREV_NF)) {
-		sph -= 2;
-		eph += 2;
-		slv -= 2;
-		elv += 2;
-	}
-	if (features & OMAP3ISP_PREV_HRZ_MED) {
-		sph -= 2;
-		eph += 2;
-	}
-	if (features & (OMAP3ISP_PREV_CHROMA_SUPP | OMAP3ISP_PREV_LUMAENH))
-		sph -= 2;
-
-	isp_reg_writel(isp, (sph << ISPPRV_HORZ_INFO_SPH_SHIFT) | eph,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_HORZ_INFO);
-	isp_reg_writel(isp, (slv << ISPPRV_VERT_INFO_SLV_SHIFT) | elv,
-		       OMAP3_ISP_IOMEM_PREV, ISPPRV_VERT_INFO);
-}
-
-/*
- * preview_config_inlineoffset - Configures the Read address line offset.
- * @prev: Preview module
- * @offset: Line offset
- *
- * According to the TRM, the line offset must be aligned on a 32 bytes boundary.
- * However, a hardware bug requires the memory start address to be aligned on a
- * 64 bytes boundary, so the offset probably should be aligned on 64 bytes as
- * well.
- */
-static void
-preview_config_inlineoffset(struct isp_prev_device *prev, u32 offset)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	isp_reg_writel(isp, offset & 0xffff, OMAP3_ISP_IOMEM_PREV,
-		       ISPPRV_RADR_OFFSET);
-}
-
-/*
- * preview_set_inaddr - Sets memory address of input frame.
- * @addr: 32bit memory address aligned on 32byte boundary.
- *
- * Configures the memory address from which the input frame is to be read.
- */
-static void preview_set_inaddr(struct isp_prev_device *prev, u32 addr)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_RSDR_ADDR);
-}
-
-/*
- * preview_config_outlineoffset - Configures the Write address line offset.
- * @offset: Line Offset for the preview output.
- *
- * The offset must be a multiple of 32 bytes.
- */
-static void preview_config_outlineoffset(struct isp_prev_device *prev,
-				    u32 offset)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	isp_reg_writel(isp, offset & 0xffff, OMAP3_ISP_IOMEM_PREV,
-		       ISPPRV_WADD_OFFSET);
-}
-
-/*
- * preview_set_outaddr - Sets the memory address to store output frame
- * @addr: 32bit memory address aligned on 32byte boundary.
- *
- * Configures the memory address to which the output frame is written.
- */
-static void preview_set_outaddr(struct isp_prev_device *prev, u32 addr)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_WSDR_ADDR);
-}
-
-static void preview_adjust_bandwidth(struct isp_prev_device *prev)
-{
-	struct isp_pipeline *pipe = to_isp_pipeline(&prev->subdev.entity);
-	struct isp_device *isp = to_isp_device(prev);
-	const struct v4l2_mbus_framefmt *ifmt = &prev->formats[PREV_PAD_SINK];
-	unsigned long l3_ick = pipe->l3_ick;
-	struct v4l2_fract *timeperframe;
-	unsigned int cycles_per_frame;
-	unsigned int requests_per_frame;
-	unsigned int cycles_per_request;
-	unsigned int minimum;
-	unsigned int maximum;
-	unsigned int value;
-
-	if (prev->input != PREVIEW_INPUT_MEMORY) {
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
-			    ISPSBL_SDR_REQ_PRV_EXP_MASK);
-		return;
-	}
-
-	/* Compute the minimum number of cycles per request, based on the
-	 * pipeline maximum data rate. This is an absolute lower bound if we
-	 * don't want SBL overflows, so round the value up.
-	 */
-	cycles_per_request = div_u64((u64)l3_ick / 2 * 256 + pipe->max_rate - 1,
-				     pipe->max_rate);
-	minimum = DIV_ROUND_UP(cycles_per_request, 32);
-
-	/* Compute the maximum number of cycles per request, based on the
-	 * requested frame rate. This is a soft upper bound to achieve a frame
-	 * rate equal or higher than the requested value, so round the value
-	 * down.
-	 */
-	timeperframe = &pipe->max_timeperframe;
-
-	requests_per_frame = DIV_ROUND_UP(ifmt->width * 2, 256) * ifmt->height;
-	cycles_per_frame = div_u64((u64)l3_ick * timeperframe->numerator,
-				   timeperframe->denominator);
-	cycles_per_request = cycles_per_frame / requests_per_frame;
-
-	maximum = cycles_per_request / 32;
-
-	value = max(minimum, maximum);
-
-	dev_dbg(isp->dev, "%s: cycles per request = %u\n", __func__, value);
-	isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
-			ISPSBL_SDR_REQ_PRV_EXP_MASK,
-			value << ISPSBL_SDR_REQ_PRV_EXP_SHIFT);
-}
-
-/*
- * omap3isp_preview_busy - Gets busy state of preview module.
- */
-int omap3isp_preview_busy(struct isp_prev_device *prev)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	return isp_reg_readl(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR)
-		& ISPPRV_PCR_BUSY;
-}
-
-/*
- * omap3isp_preview_restore_context - Restores the values of preview registers
- */
-void omap3isp_preview_restore_context(struct isp_device *isp)
-{
-	struct isp_prev_device *prev = &isp->isp_prev;
-	const u32 update = OMAP3ISP_PREV_FEATURES_END - 1;
-
-	prev->params.params[0].update = prev->params.active & update;
-	prev->params.params[1].update = ~prev->params.active & update;
-
-	preview_setup_hw(prev, update, prev->params.active);
-
-	prev->params.params[0].update = 0;
-	prev->params.params[1].update = 0;
-}
-
-/*
- * preview_print_status - Dump preview module registers to the kernel log
- */
-#define PREV_PRINT_REGISTER(isp, name)\
-	dev_dbg(isp->dev, "###PRV " #name "=0x%08x\n", \
-		isp_reg_readl(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_##name))
-
-static void preview_print_status(struct isp_prev_device *prev)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	dev_dbg(isp->dev, "-------------Preview Register dump----------\n");
-
-	PREV_PRINT_REGISTER(isp, PCR);
-	PREV_PRINT_REGISTER(isp, HORZ_INFO);
-	PREV_PRINT_REGISTER(isp, VERT_INFO);
-	PREV_PRINT_REGISTER(isp, RSDR_ADDR);
-	PREV_PRINT_REGISTER(isp, RADR_OFFSET);
-	PREV_PRINT_REGISTER(isp, DSDR_ADDR);
-	PREV_PRINT_REGISTER(isp, DRKF_OFFSET);
-	PREV_PRINT_REGISTER(isp, WSDR_ADDR);
-	PREV_PRINT_REGISTER(isp, WADD_OFFSET);
-	PREV_PRINT_REGISTER(isp, AVE);
-	PREV_PRINT_REGISTER(isp, HMED);
-	PREV_PRINT_REGISTER(isp, NF);
-	PREV_PRINT_REGISTER(isp, WB_DGAIN);
-	PREV_PRINT_REGISTER(isp, WBGAIN);
-	PREV_PRINT_REGISTER(isp, WBSEL);
-	PREV_PRINT_REGISTER(isp, CFA);
-	PREV_PRINT_REGISTER(isp, BLKADJOFF);
-	PREV_PRINT_REGISTER(isp, RGB_MAT1);
-	PREV_PRINT_REGISTER(isp, RGB_MAT2);
-	PREV_PRINT_REGISTER(isp, RGB_MAT3);
-	PREV_PRINT_REGISTER(isp, RGB_MAT4);
-	PREV_PRINT_REGISTER(isp, RGB_MAT5);
-	PREV_PRINT_REGISTER(isp, RGB_OFF1);
-	PREV_PRINT_REGISTER(isp, RGB_OFF2);
-	PREV_PRINT_REGISTER(isp, CSC0);
-	PREV_PRINT_REGISTER(isp, CSC1);
-	PREV_PRINT_REGISTER(isp, CSC2);
-	PREV_PRINT_REGISTER(isp, CSC_OFFSET);
-	PREV_PRINT_REGISTER(isp, CNT_BRT);
-	PREV_PRINT_REGISTER(isp, CSUP);
-	PREV_PRINT_REGISTER(isp, SETUP_YC);
-	PREV_PRINT_REGISTER(isp, SET_TBL_ADDR);
-	PREV_PRINT_REGISTER(isp, CDC_THR0);
-	PREV_PRINT_REGISTER(isp, CDC_THR1);
-	PREV_PRINT_REGISTER(isp, CDC_THR2);
-	PREV_PRINT_REGISTER(isp, CDC_THR3);
-
-	dev_dbg(isp->dev, "--------------------------------------------\n");
-}
-
-/*
- * preview_init_params - init image processing parameters.
- * @prev: pointer to previewer private structure
- */
-static void preview_init_params(struct isp_prev_device *prev)
-{
-	struct prev_params *params;
-	unsigned int i;
-
-	spin_lock_init(&prev->params.lock);
-
-	prev->params.active = ~0;
-	prev->params.params[0].busy = 0;
-	prev->params.params[0].update = OMAP3ISP_PREV_FEATURES_END - 1;
-	prev->params.params[1].busy = 0;
-	prev->params.params[1].update = 0;
-
-	params = &prev->params.params[0];
-
-	/* Init values */
-	params->contrast = ISPPRV_CONTRAST_DEF * ISPPRV_CONTRAST_UNITS;
-	params->brightness = ISPPRV_BRIGHT_DEF * ISPPRV_BRIGHT_UNITS;
-	params->cfa.format = OMAP3ISP_CFAFMT_BAYER;
-	memcpy(params->cfa.table, cfa_coef_table,
-	       sizeof(params->cfa.table));
-	params->cfa.gradthrs_horz = FLR_CFA_GRADTHRS_HORZ;
-	params->cfa.gradthrs_vert = FLR_CFA_GRADTHRS_VERT;
-	params->csup.gain = FLR_CSUP_GAIN;
-	params->csup.thres = FLR_CSUP_THRES;
-	params->csup.hypf_en = 0;
-	memcpy(params->luma.table, luma_enhance_table,
-	       sizeof(params->luma.table));
-	params->nf.spread = FLR_NF_STRGTH;
-	memcpy(params->nf.table, noise_filter_table, sizeof(params->nf.table));
-	params->dcor.couplet_mode_en = 1;
-	for (i = 0; i < OMAP3ISP_PREV_DETECT_CORRECT_CHANNELS; i++)
-		params->dcor.detect_correct[i] = DEF_DETECT_CORRECT_VAL;
-	memcpy(params->gamma.blue, gamma_table, sizeof(params->gamma.blue));
-	memcpy(params->gamma.green, gamma_table, sizeof(params->gamma.green));
-	memcpy(params->gamma.red, gamma_table, sizeof(params->gamma.red));
-	params->wbal.dgain = FLR_WBAL_DGAIN;
-	params->wbal.coef0 = FLR_WBAL_COEF;
-	params->wbal.coef1 = FLR_WBAL_COEF;
-	params->wbal.coef2 = FLR_WBAL_COEF;
-	params->wbal.coef3 = FLR_WBAL_COEF;
-	params->blkadj.red = FLR_BLKADJ_RED;
-	params->blkadj.green = FLR_BLKADJ_GREEN;
-	params->blkadj.blue = FLR_BLKADJ_BLUE;
-	params->rgb2rgb = flr_rgb2rgb;
-	params->csc = flr_prev_csc;
-	params->yclimit.minC = ISPPRV_YC_MIN;
-	params->yclimit.maxC = ISPPRV_YC_MAX;
-	params->yclimit.minY = ISPPRV_YC_MIN;
-	params->yclimit.maxY = ISPPRV_YC_MAX;
-
-	params->features = OMAP3ISP_PREV_CFA | OMAP3ISP_PREV_DEFECT_COR
-			 | OMAP3ISP_PREV_NF | OMAP3ISP_PREV_GAMMA
-			 | OMAP3ISP_PREV_BLKADJ | OMAP3ISP_PREV_YC_LIMIT
-			 | OMAP3ISP_PREV_RGB2RGB | OMAP3ISP_PREV_COLOR_CONV
-			 | OMAP3ISP_PREV_WB | OMAP3ISP_PREV_BRIGHTNESS
-			 | OMAP3ISP_PREV_CONTRAST;
-}
-
-/*
- * preview_max_out_width - Handle previewer hardware ouput limitations
- * @isp_revision : ISP revision
- * returns maximum width output for current isp revision
- */
-static unsigned int preview_max_out_width(struct isp_prev_device *prev)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	switch (isp->revision) {
-	case ISP_REVISION_1_0:
-		return PREV_MAX_OUT_WIDTH_REV_1;
-
-	case ISP_REVISION_2_0:
-	default:
-		return PREV_MAX_OUT_WIDTH_REV_2;
-
-	case ISP_REVISION_15_0:
-		return PREV_MAX_OUT_WIDTH_REV_15;
-	}
-}
-
-static void preview_configure(struct isp_prev_device *prev)
-{
-	struct isp_device *isp = to_isp_device(prev);
-	struct v4l2_mbus_framefmt *format;
-	unsigned long flags;
-	u32 update;
-	u32 active;
-
-	spin_lock_irqsave(&prev->params.lock, flags);
-	/* Mark all active parameters we are going to touch as busy. */
-	update = preview_params_lock(prev, 0, false);
-	active = prev->params.active;
-	spin_unlock_irqrestore(&prev->params.lock, flags);
-
-	/* PREV_PAD_SINK */
-	format = &prev->formats[PREV_PAD_SINK];
-
-	preview_adjust_bandwidth(prev);
-
-	preview_config_input_format(prev, format);
-	preview_config_input_size(prev, active);
-
-	if (prev->input == PREVIEW_INPUT_CCDC)
-		preview_config_inlineoffset(prev, 0);
-	else
-		preview_config_inlineoffset(prev,
-				ALIGN(format->width, 0x20) * 2);
-
-	preview_setup_hw(prev, update, active);
-
-	/* PREV_PAD_SOURCE */
-	format = &prev->formats[PREV_PAD_SOURCE];
-
-	if (prev->output & PREVIEW_OUTPUT_MEMORY)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_SDRPORT);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_SDRPORT);
-
-	if (prev->output & PREVIEW_OUTPUT_RESIZER)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_RSZPORT);
-	else
-		isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_RSZPORT);
-
-	if (prev->output & PREVIEW_OUTPUT_MEMORY)
-		preview_config_outlineoffset(prev,
-				ALIGN(format->width, 0x10) * 2);
-
-	preview_config_averager(prev, 0);
-	preview_config_ycpos(prev, format->code);
-
-	spin_lock_irqsave(&prev->params.lock, flags);
-	preview_params_unlock(prev, update, false);
-	spin_unlock_irqrestore(&prev->params.lock, flags);
-}
-
-/* -----------------------------------------------------------------------------
- * Interrupt handling
- */
-
-static void preview_enable_oneshot(struct isp_prev_device *prev)
-{
-	struct isp_device *isp = to_isp_device(prev);
-
-	/* The PCR.SOURCE bit is automatically reset to 0 when the PCR.ENABLE
-	 * bit is set. As the preview engine is used in single-shot mode, we
-	 * need to set PCR.SOURCE before enabling the preview engine.
-	 */
-	if (prev->input == PREVIEW_INPUT_MEMORY)
-		isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-			    ISPPRV_PCR_SOURCE);
-
-	isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
-		    ISPPRV_PCR_EN | ISPPRV_PCR_ONESHOT);
-}
-
-void omap3isp_preview_isr_frame_sync(struct isp_prev_device *prev)
-{
-	/*
-	 * If ISP_VIDEO_DMAQUEUE_QUEUED is set, DMA queue had an underrun
-	 * condition, the module was paused and now we have a buffer queued
-	 * on the output again. Restart the pipeline if running in continuous
-	 * mode.
-	 */
-	if (prev->state == ISP_PIPELINE_STREAM_CONTINUOUS &&
-	    prev->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) {
-		preview_enable_oneshot(prev);
-		isp_video_dmaqueue_flags_clr(&prev->video_out);
-	}
-}
-
-static void preview_isr_buffer(struct isp_prev_device *prev)
-{
-	struct isp_pipeline *pipe = to_isp_pipeline(&prev->subdev.entity);
-	struct isp_buffer *buffer;
-	int restart = 0;
-
-	if (prev->input == PREVIEW_INPUT_MEMORY) {
-		buffer = omap3isp_video_buffer_next(&prev->video_in);
-		if (buffer != NULL)
-			preview_set_inaddr(prev, buffer->isp_addr);
-		pipe->state |= ISP_PIPELINE_IDLE_INPUT;
-	}
-
-	if (prev->output & PREVIEW_OUTPUT_MEMORY) {
-		buffer = omap3isp_video_buffer_next(&prev->video_out);
-		if (buffer != NULL) {
-			preview_set_outaddr(prev, buffer->isp_addr);
-			restart = 1;
-		}
-		pipe->state |= ISP_PIPELINE_IDLE_OUTPUT;
-	}
-
-	switch (prev->state) {
-	case ISP_PIPELINE_STREAM_SINGLESHOT:
-		if (isp_pipeline_ready(pipe))
-			omap3isp_pipeline_set_stream(pipe,
-						ISP_PIPELINE_STREAM_SINGLESHOT);
-		break;
-
-	case ISP_PIPELINE_STREAM_CONTINUOUS:
-		/* If an underrun occurs, the video queue operation handler will
-		 * restart the preview engine. Otherwise restart it immediately.
-		 */
-		if (restart)
-			preview_enable_oneshot(prev);
-		break;
-
-	case ISP_PIPELINE_STREAM_STOPPED:
-	default:
-		return;
-	}
-}
-
-/*
- * omap3isp_preview_isr - ISP preview engine interrupt handler
- *
- * Manage the preview engine video buffers and configure shadowed registers.
- */
-void omap3isp_preview_isr(struct isp_prev_device *prev)
-{
-	unsigned long flags;
-	u32 update;
-	u32 active;
-
-	if (omap3isp_module_sync_is_stopping(&prev->wait, &prev->stopping))
-		return;
-
-	spin_lock_irqsave(&prev->params.lock, flags);
-	preview_params_switch(prev);
-	update = preview_params_lock(prev, 0, false);
-	active = prev->params.active;
-	spin_unlock_irqrestore(&prev->params.lock, flags);
-
-	preview_setup_hw(prev, update, active);
-	preview_config_input_size(prev, active);
-
-	if (prev->input == PREVIEW_INPUT_MEMORY ||
-	    prev->output & PREVIEW_OUTPUT_MEMORY)
-		preview_isr_buffer(prev);
-	else if (prev->state == ISP_PIPELINE_STREAM_CONTINUOUS)
-		preview_enable_oneshot(prev);
-
-	spin_lock_irqsave(&prev->params.lock, flags);
-	preview_params_unlock(prev, update, false);
-	spin_unlock_irqrestore(&prev->params.lock, flags);
-}
-
-/* -----------------------------------------------------------------------------
- * ISP video operations
- */
-
-static int preview_video_queue(struct isp_video *video,
-			       struct isp_buffer *buffer)
-{
-	struct isp_prev_device *prev = &video->isp->isp_prev;
-
-	if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
-		preview_set_inaddr(prev, buffer->isp_addr);
-
-	if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
-		preview_set_outaddr(prev, buffer->isp_addr);
-
-	return 0;
-}
-
-static const struct isp_video_operations preview_video_ops = {
-	.queue = preview_video_queue,
-};
-
-/* -----------------------------------------------------------------------------
- * V4L2 subdev operations
- */
-
-/*
- * preview_s_ctrl - Handle set control subdev method
- * @ctrl: pointer to v4l2 control structure
- */
-static int preview_s_ctrl(struct v4l2_ctrl *ctrl)
-{
-	struct isp_prev_device *prev =
-		container_of(ctrl->handler, struct isp_prev_device, ctrls);
-
-	switch (ctrl->id) {
-	case V4L2_CID_BRIGHTNESS:
-		preview_update_brightness(prev, ctrl->val);
-		break;
-	case V4L2_CID_CONTRAST:
-		preview_update_contrast(prev, ctrl->val);
-		break;
-	}
-
-	return 0;
-}
-
-static const struct v4l2_ctrl_ops preview_ctrl_ops = {
-	.s_ctrl = preview_s_ctrl,
-};
-
-/*
- * preview_ioctl - Handle preview module private ioctl's
- * @prev: pointer to preview context structure
- * @cmd: configuration command
- * @arg: configuration argument
- * return -EINVAL or zero on success
- */
-static long preview_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
-{
-	struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
-
-	switch (cmd) {
-	case VIDIOC_OMAP3ISP_PRV_CFG:
-		return preview_config(prev, arg);
-
-	default:
-		return -ENOIOCTLCMD;
-	}
-}
-
-/*
- * preview_set_stream - Enable/Disable streaming on preview subdev
- * @sd    : pointer to v4l2 subdev structure
- * @enable: 1 == Enable, 0 == Disable
- * return -EINVAL or zero on success
- */
-static int preview_set_stream(struct v4l2_subdev *sd, int enable)
-{
-	struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
-	struct isp_video *video_out = &prev->video_out;
-	struct isp_device *isp = to_isp_device(prev);
-	struct device *dev = to_device(prev);
-
-	if (prev->state == ISP_PIPELINE_STREAM_STOPPED) {
-		if (enable == ISP_PIPELINE_STREAM_STOPPED)
-			return 0;
-
-		omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_PREVIEW);
-		preview_configure(prev);
-		atomic_set(&prev->stopping, 0);
-		preview_print_status(prev);
-	}
-
-	switch (enable) {
-	case ISP_PIPELINE_STREAM_CONTINUOUS:
-		if (prev->output & PREVIEW_OUTPUT_MEMORY)
-			omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
-
-		if (video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED ||
-		    !(prev->output & PREVIEW_OUTPUT_MEMORY))
-			preview_enable_oneshot(prev);
-
-		isp_video_dmaqueue_flags_clr(video_out);
-		break;
-
-	case ISP_PIPELINE_STREAM_SINGLESHOT:
-		if (prev->input == PREVIEW_INPUT_MEMORY)
-			omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_READ);
-		if (prev->output & PREVIEW_OUTPUT_MEMORY)
-			omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
-
-		preview_enable_oneshot(prev);
-		break;
-
-	case ISP_PIPELINE_STREAM_STOPPED:
-		if (omap3isp_module_sync_idle(&sd->entity, &prev->wait,
-					      &prev->stopping))
-			dev_dbg(dev, "%s: stop timeout.\n", sd->name);
-		omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_READ);
-		omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
-		omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_PREVIEW);
-		isp_video_dmaqueue_flags_clr(video_out);
-		break;
-	}
-
-	prev->state = enable;
-	return 0;
-}
-
-static struct v4l2_mbus_framefmt *
-__preview_get_format(struct isp_prev_device *prev, struct v4l2_subdev_fh *fh,
-		     unsigned int pad, enum v4l2_subdev_format_whence which)
-{
-	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(fh, pad);
-	else
-		return &prev->formats[pad];
-}
-
-static struct v4l2_rect *
-__preview_get_crop(struct isp_prev_device *prev, struct v4l2_subdev_fh *fh,
-		   enum v4l2_subdev_format_whence which)
-{
-	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_crop(fh, PREV_PAD_SINK);
-	else
-		return &prev->crop;
-}
-
-/* previewer format descriptions */
-static const unsigned int preview_input_fmts[] = {
-	V4L2_MBUS_FMT_Y10_1X10,
-	V4L2_MBUS_FMT_SGRBG10_1X10,
-	V4L2_MBUS_FMT_SRGGB10_1X10,
-	V4L2_MBUS_FMT_SBGGR10_1X10,
-	V4L2_MBUS_FMT_SGBRG10_1X10,
-};
-
-static const unsigned int preview_output_fmts[] = {
-	V4L2_MBUS_FMT_UYVY8_1X16,
-	V4L2_MBUS_FMT_YUYV8_1X16,
-};
-
-/*
- * preview_try_format - Validate a format
- * @prev: ISP preview engine
- * @fh: V4L2 subdev file handle
- * @pad: pad number
- * @fmt: format to be validated
- * @which: try/active format selector
- *
- * Validate and adjust the given format for the given pad based on the preview
- * engine limits and the format and crop rectangles on other pads.
- */
-static void preview_try_format(struct isp_prev_device *prev,
-			       struct v4l2_subdev_fh *fh, unsigned int pad,
-			       struct v4l2_mbus_framefmt *fmt,
-			       enum v4l2_subdev_format_whence which)
-{
-	enum v4l2_mbus_pixelcode pixelcode;
-	struct v4l2_rect *crop;
-	unsigned int i;
-
-	switch (pad) {
-	case PREV_PAD_SINK:
-		/* When reading data from the CCDC, the input size has already
-		 * been mangled by the CCDC output pad so it can be accepted
-		 * as-is.
-		 *
-		 * When reading data from memory, clamp the requested width and
-		 * height. The TRM doesn't specify a minimum input height, make
-		 * sure we got enough lines to enable the noise filter and color
-		 * filter array interpolation.
-		 */
-		if (prev->input == PREVIEW_INPUT_MEMORY) {
-			fmt->width = clamp_t(u32, fmt->width, PREV_MIN_IN_WIDTH,
-					     preview_max_out_width(prev));
-			fmt->height = clamp_t(u32, fmt->height,
-					      PREV_MIN_IN_HEIGHT,
-					      PREV_MAX_IN_HEIGHT);
-		}
-
-		fmt->colorspace = V4L2_COLORSPACE_SRGB;
-
-		for (i = 0; i < ARRAY_SIZE(preview_input_fmts); i++) {
-			if (fmt->code == preview_input_fmts[i])
-				break;
-		}
-
-		/* If not found, use SGRBG10 as default */
-		if (i >= ARRAY_SIZE(preview_input_fmts))
-			fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
-		break;
-
-	case PREV_PAD_SOURCE:
-		pixelcode = fmt->code;
-		*fmt = *__preview_get_format(prev, fh, PREV_PAD_SINK, which);
-
-		switch (pixelcode) {
-		case V4L2_MBUS_FMT_YUYV8_1X16:
-		case V4L2_MBUS_FMT_UYVY8_1X16:
-			fmt->code = pixelcode;
-			break;
-
-		default:
-			fmt->code = V4L2_MBUS_FMT_YUYV8_1X16;
-			break;
-		}
-
-		/* The preview module output size is configurable through the
-		 * averager (horizontal scaling by 1/1, 1/2, 1/4 or 1/8). This
-		 * is not supported yet, hardcode the output size to the crop
-		 * rectangle size.
-		 */
-		crop = __preview_get_crop(prev, fh, which);
-		fmt->width = crop->width;
-		fmt->height = crop->height;
-
-		fmt->colorspace = V4L2_COLORSPACE_JPEG;
-		break;
-	}
-
-	fmt->field = V4L2_FIELD_NONE;
-}
-
-/*
- * preview_try_crop - Validate a crop rectangle
- * @prev: ISP preview engine
- * @sink: format on the sink pad
- * @crop: crop rectangle to be validated
- *
- * The preview engine crops lines and columns for its internal operation,
- * depending on which filters are enabled. Enforce minimum crop margins to
- * handle that transparently for userspace.
- *
- * See the explanation at the PREV_MARGIN_* definitions for more details.
- */
-static void preview_try_crop(struct isp_prev_device *prev,
-			     const struct v4l2_mbus_framefmt *sink,
-			     struct v4l2_rect *crop)
-{
-	unsigned int left = PREV_MARGIN_LEFT;
-	unsigned int right = sink->width - PREV_MARGIN_RIGHT;
-	unsigned int top = PREV_MARGIN_TOP;
-	unsigned int bottom = sink->height - PREV_MARGIN_BOTTOM;
-
-	/* When processing data on-the-fly from the CCDC, at least 2 pixels must
-	 * be cropped from the left and right sides of the image. As we don't
-	 * know which filters will be enabled, increase the left and right
-	 * margins by two.
-	 */
-	if (prev->input == PREVIEW_INPUT_CCDC) {
-		left += 2;
-		right -= 2;
-	}
-
-	/* Restrict left/top to even values to keep the Bayer pattern. */
-	crop->left &= ~1;
-	crop->top &= ~1;
-
-	crop->left = clamp_t(u32, crop->left, left, right - PREV_MIN_OUT_WIDTH);
-	crop->top = clamp_t(u32, crop->top, top, bottom - PREV_MIN_OUT_HEIGHT);
-	crop->width = clamp_t(u32, crop->width, PREV_MIN_OUT_WIDTH,
-			      right - crop->left);
-	crop->height = clamp_t(u32, crop->height, PREV_MIN_OUT_HEIGHT,
-			       bottom - crop->top);
-}
-
-/*
- * preview_enum_mbus_code - Handle pixel format enumeration
- * @sd     : pointer to v4l2 subdev structure
- * @fh     : V4L2 subdev file handle
- * @code   : pointer to v4l2_subdev_mbus_code_enum structure
- * return -EINVAL or zero on success
- */
-static int preview_enum_mbus_code(struct v4l2_subdev *sd,
-				  struct v4l2_subdev_fh *fh,
-				  struct v4l2_subdev_mbus_code_enum *code)
-{
-	switch (code->pad) {
-	case PREV_PAD_SINK:
-		if (code->index >= ARRAY_SIZE(preview_input_fmts))
-			return -EINVAL;
-
-		code->code = preview_input_fmts[code->index];
-		break;
-	case PREV_PAD_SOURCE:
-		if (code->index >= ARRAY_SIZE(preview_output_fmts))
-			return -EINVAL;
-
-		code->code = preview_output_fmts[code->index];
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int preview_enum_frame_size(struct v4l2_subdev *sd,
-				   struct v4l2_subdev_fh *fh,
-				   struct v4l2_subdev_frame_size_enum *fse)
-{
-	struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
-	struct v4l2_mbus_framefmt format;
-
-	if (fse->index != 0)
-		return -EINVAL;
-
-	format.code = fse->code;
-	format.width = 1;
-	format.height = 1;
-	preview_try_format(prev, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
-	fse->min_width = format.width;
-	fse->min_height = format.height;
-
-	if (format.code != fse->code)
-		return -EINVAL;
-
-	format.code = fse->code;
-	format.width = -1;
-	format.height = -1;
-	preview_try_format(prev, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
-	fse->max_width = format.width;
-	fse->max_height = format.height;
-
-	return 0;
-}
-
-/*
- * preview_get_selection - Retrieve a selection rectangle on a pad
- * @sd: ISP preview V4L2 subdevice
- * @fh: V4L2 subdev file handle
- * @sel: Selection rectangle
- *
- * The only supported rectangles are the crop rectangles on the sink pad.
- *
- * Return 0 on success or a negative error code otherwise.
- */
-static int preview_get_selection(struct v4l2_subdev *sd,
-				 struct v4l2_subdev_fh *fh,
-				 struct v4l2_subdev_selection *sel)
-{
-	struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
-	struct v4l2_mbus_framefmt *format;
-
-	if (sel->pad != PREV_PAD_SINK)
-		return -EINVAL;
-
-	switch (sel->target) {
-	case V4L2_SEL_TGT_CROP_BOUNDS:
-		sel->r.left = 0;
-		sel->r.top = 0;
-		sel->r.width = INT_MAX;
-		sel->r.height = INT_MAX;
-
-		format = __preview_get_format(prev, fh, PREV_PAD_SINK,
-					      sel->which);
-		preview_try_crop(prev, format, &sel->r);
-		break;
-
-	case V4L2_SEL_TGT_CROP:
-		sel->r = *__preview_get_crop(prev, fh, sel->which);
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/*
- * preview_set_selection - Set a selection rectangle on a pad
- * @sd: ISP preview V4L2 subdevice
- * @fh: V4L2 subdev file handle
- * @sel: Selection rectangle
- *
- * The only supported rectangle is the actual crop rectangle on the sink pad.
- *
- * Return 0 on success or a negative error code otherwise.
- */
-static int preview_set_selection(struct v4l2_subdev *sd,
-				 struct v4l2_subdev_fh *fh,
-				 struct v4l2_subdev_selection *sel)
-{
-	struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
-	struct v4l2_mbus_framefmt *format;
-
-	if (sel->target != V4L2_SEL_TGT_CROP ||
-	    sel->pad != PREV_PAD_SINK)
-		return -EINVAL;
-
-	/* The crop rectangle can't be changed while streaming. */
-	if (prev->state != ISP_PIPELINE_STREAM_STOPPED)
-		return -EBUSY;
-
-	/* Modifying the crop rectangle always changes the format on the source
-	 * pad. If the KEEP_CONFIG flag is set, just return the current crop
-	 * rectangle.
-	 */
-	if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) {
-		sel->r = *__preview_get_crop(prev, fh, sel->which);
-		return 0;
-	}
-
-	format = __preview_get_format(prev, fh, PREV_PAD_SINK, sel->which);
-	preview_try_crop(prev, format, &sel->r);
-	*__preview_get_crop(prev, fh, sel->which) = sel->r;
-
-	/* Update the source format. */
-	format = __preview_get_format(prev, fh, PREV_PAD_SOURCE, sel->which);
-	preview_try_format(prev, fh, PREV_PAD_SOURCE, format, sel->which);
-
-	return 0;
-}
-
-/*
- * preview_get_format - Handle get format by pads subdev method
- * @sd : pointer to v4l2 subdev structure
- * @fh : V4L2 subdev file handle
- * @fmt: pointer to v4l2 subdev format structure
- * return -EINVAL or zero on success
- */
-static int preview_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
-			      struct v4l2_subdev_format *fmt)
-{
-	struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
-	struct v4l2_mbus_framefmt *format;
-
-	format = __preview_get_format(prev, fh, fmt->pad, fmt->which);
-	if (format == NULL)
-		return -EINVAL;
-
-	fmt->format = *format;
-	return 0;
-}
-
-/*
- * preview_set_format - Handle set format by pads subdev method
- * @sd : pointer to v4l2 subdev structure
- * @fh : V4L2 subdev file handle
- * @fmt: pointer to v4l2 subdev format structure
- * return -EINVAL or zero on success
- */
-static int preview_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
-			      struct v4l2_subdev_format *fmt)
-{
-	struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
-	struct v4l2_mbus_framefmt *format;
-	struct v4l2_rect *crop;
-
-	format = __preview_get_format(prev, fh, fmt->pad, fmt->which);
-	if (format == NULL)
-		return -EINVAL;
-
-	preview_try_format(prev, fh, fmt->pad, &fmt->format, fmt->which);
-	*format = fmt->format;
-
-	/* Propagate the format from sink to source */
-	if (fmt->pad == PREV_PAD_SINK) {
-		/* Reset the crop rectangle. */
-		crop = __preview_get_crop(prev, fh, fmt->which);
-		crop->left = 0;
-		crop->top = 0;
-		crop->width = fmt->format.width;
-		crop->height = fmt->format.height;
-
-		preview_try_crop(prev, &fmt->format, crop);
-
-		/* Update the source format. */
-		format = __preview_get_format(prev, fh, PREV_PAD_SOURCE,
-					      fmt->which);
-		preview_try_format(prev, fh, PREV_PAD_SOURCE, format,
-				   fmt->which);
-	}
-
-	return 0;
-}
-
-/*
- * preview_init_formats - Initialize formats on all pads
- * @sd: ISP preview V4L2 subdevice
- * @fh: V4L2 subdev file handle
- *
- * Initialize all pad formats with default values. If fh is not NULL, try
- * formats are initialized on the file handle. Otherwise active formats are
- * initialized on the device.
- */
-static int preview_init_formats(struct v4l2_subdev *sd,
-				struct v4l2_subdev_fh *fh)
-{
-	struct v4l2_subdev_format format;
-
-	memset(&format, 0, sizeof(format));
-	format.pad = PREV_PAD_SINK;
-	format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
-	format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
-	format.format.width = 4096;
-	format.format.height = 4096;
-	preview_set_format(sd, fh, &format);
-
-	return 0;
-}
-
-/* subdev core operations */
-static const struct v4l2_subdev_core_ops preview_v4l2_core_ops = {
-	.ioctl = preview_ioctl,
-};
-
-/* subdev video operations */
-static const struct v4l2_subdev_video_ops preview_v4l2_video_ops = {
-	.s_stream = preview_set_stream,
-};
-
-/* subdev pad operations */
-static const struct v4l2_subdev_pad_ops preview_v4l2_pad_ops = {
-	.enum_mbus_code = preview_enum_mbus_code,
-	.enum_frame_size = preview_enum_frame_size,
-	.get_fmt = preview_get_format,
-	.set_fmt = preview_set_format,
-	.get_selection = preview_get_selection,
-	.set_selection = preview_set_selection,
-};
-
-/* subdev operations */
-static const struct v4l2_subdev_ops preview_v4l2_ops = {
-	.core = &preview_v4l2_core_ops,
-	.video = &preview_v4l2_video_ops,
-	.pad = &preview_v4l2_pad_ops,
-};
-
-/* subdev internal operations */
-static const struct v4l2_subdev_internal_ops preview_v4l2_internal_ops = {
-	.open = preview_init_formats,
-};
-
-/* -----------------------------------------------------------------------------
- * Media entity operations
- */
-
-/*
- * preview_link_setup - Setup previewer connections.
- * @entity : Pointer to media entity structure
- * @local  : Pointer to local pad array
- * @remote : Pointer to remote pad array
- * @flags  : Link flags
- * return -EINVAL or zero on success
- */
-static int preview_link_setup(struct media_entity *entity,
-			      const struct media_pad *local,
-			      const struct media_pad *remote, u32 flags)
-{
-	struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
-	struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
-
-	switch (local->index | media_entity_type(remote->entity)) {
-	case PREV_PAD_SINK | MEDIA_ENT_T_DEVNODE:
-		/* read from memory */
-		if (flags & MEDIA_LNK_FL_ENABLED) {
-			if (prev->input == PREVIEW_INPUT_CCDC)
-				return -EBUSY;
-			prev->input = PREVIEW_INPUT_MEMORY;
-		} else {
-			if (prev->input == PREVIEW_INPUT_MEMORY)
-				prev->input = PREVIEW_INPUT_NONE;
-		}
-		break;
-
-	case PREV_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
-		/* read from ccdc */
-		if (flags & MEDIA_LNK_FL_ENABLED) {
-			if (prev->input == PREVIEW_INPUT_MEMORY)
-				return -EBUSY;
-			prev->input = PREVIEW_INPUT_CCDC;
-		} else {
-			if (prev->input == PREVIEW_INPUT_CCDC)
-				prev->input = PREVIEW_INPUT_NONE;
-		}
-		break;
-
-	/*
-	 * The ISP core doesn't support pipelines with multiple video outputs.
-	 * Revisit this when it will be implemented, and return -EBUSY for now.
-	 */
-
-	case PREV_PAD_SOURCE | MEDIA_ENT_T_DEVNODE:
-		/* write to memory */
-		if (flags & MEDIA_LNK_FL_ENABLED) {
-			if (prev->output & ~PREVIEW_OUTPUT_MEMORY)
-				return -EBUSY;
-			prev->output |= PREVIEW_OUTPUT_MEMORY;
-		} else {
-			prev->output &= ~PREVIEW_OUTPUT_MEMORY;
-		}
-		break;
-
-	case PREV_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
-		/* write to resizer */
-		if (flags & MEDIA_LNK_FL_ENABLED) {
-			if (prev->output & ~PREVIEW_OUTPUT_RESIZER)
-				return -EBUSY;
-			prev->output |= PREVIEW_OUTPUT_RESIZER;
-		} else {
-			prev->output &= ~PREVIEW_OUTPUT_RESIZER;
-		}
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/* media operations */
-static const struct media_entity_operations preview_media_ops = {
-	.link_setup = preview_link_setup,
-	.link_validate = v4l2_subdev_link_validate,
-};
-
-void omap3isp_preview_unregister_entities(struct isp_prev_device *prev)
-{
-	v4l2_device_unregister_subdev(&prev->subdev);
-	omap3isp_video_unregister(&prev->video_in);
-	omap3isp_video_unregister(&prev->video_out);
-}
-
-int omap3isp_preview_register_entities(struct isp_prev_device *prev,
-	struct v4l2_device *vdev)
-{
-	int ret;
-
-	/* Register the subdev and video nodes. */
-	ret = v4l2_device_register_subdev(vdev, &prev->subdev);
-	if (ret < 0)
-		goto error;
-
-	ret = omap3isp_video_register(&prev->video_in, vdev);
-	if (ret < 0)
-		goto error;
-
-	ret = omap3isp_video_register(&prev->video_out, vdev);
-	if (ret < 0)
-		goto error;
-
-	return 0;
-
-error:
-	omap3isp_preview_unregister_entities(prev);
-	return ret;
-}
-
-/* -----------------------------------------------------------------------------
- * ISP previewer initialisation and cleanup
- */
-
-/*
- * preview_init_entities - Initialize subdev and media entity.
- * @prev : Pointer to preview structure
- * return -ENOMEM or zero on success
- */
-static int preview_init_entities(struct isp_prev_device *prev)
-{
-	struct v4l2_subdev *sd = &prev->subdev;
-	struct media_pad *pads = prev->pads;
-	struct media_entity *me = &sd->entity;
-	int ret;
-
-	prev->input = PREVIEW_INPUT_NONE;
-
-	v4l2_subdev_init(sd, &preview_v4l2_ops);
-	sd->internal_ops = &preview_v4l2_internal_ops;
-	strlcpy(sd->name, "OMAP3 ISP preview", sizeof(sd->name));
-	sd->grp_id = 1 << 16;	/* group ID for isp subdevs */
-	v4l2_set_subdevdata(sd, prev);
-	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
-
-	v4l2_ctrl_handler_init(&prev->ctrls, 2);
-	v4l2_ctrl_new_std(&prev->ctrls, &preview_ctrl_ops, V4L2_CID_BRIGHTNESS,
-			  ISPPRV_BRIGHT_LOW, ISPPRV_BRIGHT_HIGH,
-			  ISPPRV_BRIGHT_STEP, ISPPRV_BRIGHT_DEF);
-	v4l2_ctrl_new_std(&prev->ctrls, &preview_ctrl_ops, V4L2_CID_CONTRAST,
-			  ISPPRV_CONTRAST_LOW, ISPPRV_CONTRAST_HIGH,
-			  ISPPRV_CONTRAST_STEP, ISPPRV_CONTRAST_DEF);
-	v4l2_ctrl_handler_setup(&prev->ctrls);
-	sd->ctrl_handler = &prev->ctrls;
-
-	pads[PREV_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
-	pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
-
-	me->ops = &preview_media_ops;
-	ret = media_entity_init(me, PREV_PADS_NUM, pads, 0);
-	if (ret < 0)
-		return ret;
-
-	preview_init_formats(sd, NULL);
-
-	/* According to the OMAP34xx TRM, video buffers need to be aligned on a
-	 * 32 bytes boundary. However, an undocumented hardware bug requires a
-	 * 64 bytes boundary at the preview engine input.
-	 */
-	prev->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
-	prev->video_in.ops = &preview_video_ops;
-	prev->video_in.isp = to_isp_device(prev);
-	prev->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
-	prev->video_in.bpl_alignment = 64;
-	prev->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	prev->video_out.ops = &preview_video_ops;
-	prev->video_out.isp = to_isp_device(prev);
-	prev->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
-	prev->video_out.bpl_alignment = 32;
-
-	ret = omap3isp_video_init(&prev->video_in, "preview");
-	if (ret < 0)
-		goto error_video_in;
-
-	ret = omap3isp_video_init(&prev->video_out, "preview");
-	if (ret < 0)
-		goto error_video_out;
-
-	/* Connect the video nodes to the previewer subdev. */
-	ret = media_entity_create_link(&prev->video_in.video.entity, 0,
-			&prev->subdev.entity, PREV_PAD_SINK, 0);
-	if (ret < 0)
-		goto error_link;
-
-	ret = media_entity_create_link(&prev->subdev.entity, PREV_PAD_SOURCE,
-			&prev->video_out.video.entity, 0, 0);
-	if (ret < 0)
-		goto error_link;
-
-	return 0;
-
-error_link:
-	omap3isp_video_cleanup(&prev->video_out);
-error_video_out:
-	omap3isp_video_cleanup(&prev->video_in);
-error_video_in:
-	media_entity_cleanup(&prev->subdev.entity);
-	return ret;
-}
-
-/*
- * omap3isp_preview_init - Previewer initialization.
- * @dev : Pointer to ISP device
- * return -ENOMEM or zero on success
- */
-int omap3isp_preview_init(struct isp_device *isp)
-{
-	struct isp_prev_device *prev = &isp->isp_prev;
-
-	init_waitqueue_head(&prev->wait);
-
-	preview_init_params(prev);
-
-	return preview_init_entities(prev);
-}
-
-void omap3isp_preview_cleanup(struct isp_device *isp)
-{
-	struct isp_prev_device *prev = &isp->isp_prev;
-
-	v4l2_ctrl_handler_free(&prev->ctrls);
-	omap3isp_video_cleanup(&prev->video_in);
-	omap3isp_video_cleanup(&prev->video_out);
-	media_entity_cleanup(&prev->subdev.entity);
-}