[openembedded-core.git] /

From 926b51afea146826c8076e5fb305eaa0332399b4 Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Date: Tue, 10 Mar 2009 10:49:02 +0200
Subject: [PATCH] omap3isp: Add ISP backend (PRV and RSZ)

Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
---
 drivers/media/video/isp/isppreview.c | 1929 ++++++++++++++++++++++++++++++++++
 drivers/media/video/isp/isppreview.h |  354 +++++++
 drivers/media/video/isp/ispresizer.c |  928 ++++++++++++++++
 drivers/media/video/isp/ispresizer.h |  158 +++
 4 files changed, 3369 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/video/isp/isppreview.c
 create mode 100644 drivers/media/video/isp/isppreview.h
 create mode 100644 drivers/media/video/isp/ispresizer.c
 create mode 100644 drivers/media/video/isp/ispresizer.h

diff --git a/drivers/media/video/isp/isppreview.c b/drivers/media/video/isp/isppreview.c
new file mode 100644
index 0000000..17f1abc
--- /dev/null
+++ b/drivers/media/video/isp/isppreview.c
@@ -0,0 +1,1929 @@
+/*
+ * isppreview.c
+ *
+ * Driver Library for Preview module in TI's OMAP3 Camera ISP
+ *
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contributors:
+ *     Senthilvadivu Guruswamy <svadivu@ti.com>
+ *     Pallavi Kulkarni <p-kulkarni@ti.com>
+ *     Sergio Aguirre <saaguirre@ti.com>
+ *
+ * This package 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 PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <linux/mutex.h>
+#include <linux/module.h>
+#include <linux/uaccess.h>
+
+#include "isp.h"
+#include "ispreg.h"
+#include "isppreview.h"
+
+static struct ispprev_nf prev_nf_t;
+static struct prev_params *params;
+static int rg_update, gg_update, bg_update, nf_enable, nf_update;
+
+/* Structure for saving/restoring preview module registers */
+static struct isp_reg ispprev_reg_list[] = {
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_HORZ_INFO, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_VERT_INFO, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_RSDR_ADDR, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_RADR_OFFSET, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_DSDR_ADDR, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_DRKF_OFFSET, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_WSDR_ADDR, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_WADD_OFFSET, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_AVE, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_HMED, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_NF, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_WB_DGAIN, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_WBGAIN, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_WBSEL, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CFA, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_BLKADJOFF, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT1, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT2, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT3, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT4, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT5, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF1, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF2, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC0, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC1, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC2, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC_OFFSET, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CSUP, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_SETUP_YC, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR0, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR1, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR2, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR3, 0x0000},
+       {OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, 0x0000},
+       {0, ISP_TOK_TERM, 0x0000}
+};
+
+
+/* Default values in Office Flourescent Light for RGBtoRGB Blending */
+static struct ispprev_rgbtorgb flr_rgb2rgb = {
+       {       /* RGB-RGB Matrix */
+               {0x01E2, 0x0F30, 0x0FEE},
+               {0x0F9B, 0x01AC, 0x0FB9},
+               {0x0FE0, 0x0EC0, 0x0260}
+       },      /* RGB Offset */
+       {0x0000, 0x0000, 0x0000}
+};
+
+/* Default values in Office Flourescent Light for RGB to YUV Conversion*/
+static struct ispprev_csc flr_prev_csc[] = {
+       {
+               {       /* CSC Coef Matrix */
+                       {66, 129, 25},
+                       {-38, -75, 112},
+                       {112, -94 , -18}
+               },      /* CSC Offset */
+               {0x0, 0x0, 0x0}
+       },
+       {
+               {       /* CSC Coef Matrix BW */
+                       {66, 129, 25},
+                       {0, 0, 0},
+                       {0, 0, 0}
+               },      /* CSC Offset */
+               {0x0, 0x0, 0x0}
+       },
+       {
+               {       /* CSC Coef Matrix Sepia */
+                       {19, 38, 7},
+                       {0, 0, 0},
+                       {0, 0, 0}
+               },      /* CSC Offset */
+               {0x0, 0xE7, 0x14}
+       }
+};
+
+
+/* Default values in Office Flourescent Light for CFA Gradient*/
+#define FLR_CFA_GRADTHRS_HORZ  0x28
+#define FLR_CFA_GRADTHRS_VERT  0x28
+
+/* Default values in Office Flourescent Light for Chroma Suppression*/
+#define FLR_CSUP_GAIN          0x0D
+#define FLR_CSUP_THRES         0xEB
+
+/* Default values in Office Flourescent Light for Noise Filter*/
+#define FLR_NF_STRGTH          0x03
+
+/* Default values in Office Flourescent Light for White Balance*/
+#define FLR_WBAL_DGAIN         0x100
+#define FLR_WBAL_COEF0         0x20
+#define FLR_WBAL_COEF1         0x29
+#define FLR_WBAL_COEF2         0x2d
+#define FLR_WBAL_COEF3         0x20
+
+#define FLR_WBAL_COEF0_ES1     0x20
+#define FLR_WBAL_COEF1_ES1     0x23
+#define FLR_WBAL_COEF2_ES1     0x39
+#define FLR_WBAL_COEF3_ES1     0x20
+
+/* Default values in Office Flourescent Light for Black Adjustment*/
+#define FLR_BLKADJ_BLUE                0x0
+#define FLR_BLKADJ_GREEN       0x0
+#define FLR_BLKADJ_RED         0x0
+
+static int update_color_matrix;
+
+/**
+ * struct isp_prev - Structure for storing ISP Preview module information
+ * @prev_inuse: Flag to determine if CCDC has been reserved or not (0 or 1).
+ * @prevout_w: Preview output width.
+ * @prevout_h: Preview output height.
+ * @previn_w: Preview input width.
+ * @previn_h: Preview input height.
+ * @prev_inpfmt: Preview input format.
+ * @prev_outfmt: Preview output format.
+ * @hmed_en: Horizontal median filter enable.
+ * @nf_en: Noise filter enable.
+ * @dcor_en: Defect correction enable.
+ * @cfa_en: Color Filter Array (CFA) interpolation enable.
+ * @csup_en: Chrominance suppression enable.
+ * @yenh_en: Luma enhancement enable.
+ * @fmtavg: Number of horizontal pixels to average in input formatter. The
+ *          input width should be a multiple of this number.
+ * @brightness: Brightness in preview module.
+ * @contrast: Contrast in preview module.
+ * @color: Color effect in preview module.
+ * @cfafmt: Color Filter Array (CFA) Format.
+ * @ispprev_mutex: Mutex for isp preview.
+ *
+ * This structure is used to store the OMAP ISP Preview module Information.
+ */
+static struct isp_prev {
+       int pm_state;
+       u8 prev_inuse;
+       u32 prevout_w;
+       u32 prevout_h;
+       u32 previn_w;
+       u32 previn_h;
+       enum preview_input prev_inpfmt;
+       enum preview_output prev_outfmt;
+       u8 hmed_en;
+       u8 nf_en;
+       u8 dcor_en;
+       u8 cfa_en;
+       u8 csup_en;
+       u8 yenh_en;
+       u8 fmtavg;
+       u8 brightness;
+       u8 contrast;
+       enum v4l2_colorfx color;
+       enum cfa_fmt cfafmt;
+       struct mutex ispprev_mutex; /* For checking/modifying prev_inuse */
+       u32 sph;
+       u32 slv;
+} ispprev_obj;
+
+/* Saved parameters */
+static struct prev_params *prev_config_params;
+
+/*
+ * 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[] = {
+#include "cfa_coef_table.h"
+};
+
+/*
+ * Gamma Correction Table - Red
+ */
+static u32 redgamma_table[] = {
+#include "redgamma_table.h"
+};
+
+/*
+ * Gamma Correction Table - Green
+ */
+static u32 greengamma_table[] = {
+#include "greengamma_table.h"
+};
+
+/*
+ * Gamma Correction Table - Blue
+ */
+static u32 bluegamma_table[] = {
+#include "bluegamma_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"
+};
+
+/**
+ * omap34xx_isp_preview_config - Abstraction layer Preview configuration.
+ * @userspace_add: Pointer from Userspace to structure with flags and data to
+ *                 update.
+ **/
+int omap34xx_isp_preview_config(void *userspace_add)
+{
+       struct ispprev_hmed prev_hmed_t;
+       struct ispprev_cfa prev_cfa_t;
+       struct ispprev_csup csup_t;
+       struct ispprev_wbal prev_wbal_t;
+       struct ispprev_blkadj prev_blkadj_t;
+       struct ispprev_rgbtorgb rgb2rgb_t;
+       struct ispprev_csc prev_csc_t;
+       struct ispprev_yclimit yclimit_t;
+       struct ispprev_dcor prev_dcor_t;
+       struct ispprv_update_config *preview_struct;
+       struct isptables_update isp_table_update;
+       int yen_t[ISPPRV_YENH_TBL_SIZE];
+
+       if (userspace_add == NULL)
+               return -EINVAL;
+
+       preview_struct = userspace_add;
+
+       if (ISP_ABS_PREV_LUMAENH & preview_struct->flag) {
+               if (ISP_ABS_PREV_LUMAENH & preview_struct->update) {
+                       if (copy_from_user(yen_t, preview_struct->yen,
+                                          sizeof(yen_t)))
+                               goto err_copy_from_user;
+                       isppreview_config_luma_enhancement(yen_t);
+               }
+               params->features |= PREV_LUMA_ENHANCE;
+       } else if (ISP_ABS_PREV_LUMAENH & preview_struct->update)
+               params->features &= ~PREV_LUMA_ENHANCE;
+
+       if (ISP_ABS_PREV_INVALAW & preview_struct->flag) {
+               isppreview_enable_invalaw(1);
+               params->features |= PREV_INVERSE_ALAW;
+       } else {
+               isppreview_enable_invalaw(0);
+               params->features &= ~PREV_INVERSE_ALAW;
+       }
+
+       if (ISP_ABS_PREV_HRZ_MED & preview_struct->flag) {
+               if (ISP_ABS_PREV_HRZ_MED & preview_struct->update) {
+                       if (copy_from_user(&prev_hmed_t,
+                                          (struct ispprev_hmed *)
+                                          preview_struct->prev_hmed,
+                                          sizeof(struct ispprev_hmed)))
+                               goto err_copy_from_user;
+                       isppreview_config_hmed(prev_hmed_t);
+               }
+               isppreview_enable_hmed(1);
+               params->features |= PREV_HORZ_MEDIAN_FILTER;
+       } else if (ISP_ABS_PREV_HRZ_MED & preview_struct->update) {
+               isppreview_enable_hmed(0);
+               params->features &= ~PREV_HORZ_MEDIAN_FILTER;
+       }
+
+       if (ISP_ABS_PREV_CFA & preview_struct->flag) {
+               if (ISP_ABS_PREV_CFA & preview_struct->update) {
+                       if (copy_from_user(&prev_cfa_t,
+                                          (struct ispprev_cfa *)
+                                          preview_struct->prev_cfa,
+                                          sizeof(struct ispprev_cfa)))
+                               goto err_copy_from_user;
+
+                       isppreview_config_cfa(prev_cfa_t);
+               }
+               isppreview_enable_cfa(1);
+               params->features |= PREV_CFA;
+       } else if (ISP_ABS_PREV_CFA & preview_struct->update) {
+               isppreview_enable_cfa(0);
+               params->features &= ~PREV_CFA;
+       }
+
+       if (ISP_ABS_PREV_CHROMA_SUPP & preview_struct->flag) {
+               if (ISP_ABS_PREV_CHROMA_SUPP & preview_struct->update) {
+                       if (copy_from_user(&csup_t,
+                                          (struct ispprev_csup *)
+                                          preview_struct->csup,
+                                          sizeof(struct ispprev_csup)))
+                               goto err_copy_from_user;
+                       isppreview_config_chroma_suppression(csup_t);
+               }
+               isppreview_enable_chroma_suppression(1);
+               params->features |= PREV_CHROMA_SUPPRESS;
+       } else if (ISP_ABS_PREV_CHROMA_SUPP & preview_struct->update) {
+               isppreview_enable_chroma_suppression(0);
+               params->features &= ~PREV_CHROMA_SUPPRESS;
+       }
+
+       if (ISP_ABS_PREV_WB & preview_struct->update) {
+               if (copy_from_user(&prev_wbal_t, (struct ispprev_wbal *)
+                                  preview_struct->prev_wbal,
+                                  sizeof(struct ispprev_wbal)))
+                       goto err_copy_from_user;
+               isppreview_config_whitebalance(prev_wbal_t);
+       }
+
+       if (ISP_ABS_PREV_BLKADJ & preview_struct->update) {
+               if (copy_from_user(&prev_blkadj_t, (struct ispprev_blkadjl *)
+                                  preview_struct->prev_blkadj,
+                                  sizeof(struct ispprev_blkadj)))
+                       goto err_copy_from_user;
+               isppreview_config_blkadj(prev_blkadj_t);
+       }
+
+       if (ISP_ABS_PREV_RGB2RGB & preview_struct->update) {
+               if (copy_from_user(&rgb2rgb_t, (struct ispprev_rgbtorgb *)
+                                  preview_struct->rgb2rgb,
+                                  sizeof(struct ispprev_rgbtorgb)))
+                       goto err_copy_from_user;
+               isppreview_config_rgb_blending(rgb2rgb_t);
+       }
+
+       if (ISP_ABS_PREV_COLOR_CONV & preview_struct->update) {
+               if (copy_from_user(&prev_csc_t, (struct ispprev_csc *)
+                                  preview_struct->prev_csc,
+                                  sizeof(struct ispprev_csc)))
+                       goto err_copy_from_user;
+               isppreview_config_rgb_to_ycbcr(prev_csc_t);
+       }
+
+       if (ISP_ABS_PREV_YC_LIMIT & preview_struct->update) {
+               if (copy_from_user(&yclimit_t, (struct ispprev_yclimit *)
+                                  preview_struct->yclimit,
+                                  sizeof(struct ispprev_yclimit)))
+                       goto err_copy_from_user;
+               isppreview_config_yc_range(yclimit_t);
+       }
+
+       if (ISP_ABS_PREV_DEFECT_COR & preview_struct->flag) {
+               if (ISP_ABS_PREV_DEFECT_COR & preview_struct->update) {
+                       if (copy_from_user(&prev_dcor_t,
+                                          (struct ispprev_dcor *)
+                                          preview_struct->prev_dcor,
+                                          sizeof(struct ispprev_dcor)))
+                               goto err_copy_from_user;
+                       isppreview_config_dcor(prev_dcor_t);
+               }
+               isppreview_enable_dcor(1);
+               params->features |= PREV_DEFECT_COR;
+       } else if (ISP_ABS_PREV_DEFECT_COR & preview_struct->update) {
+               isppreview_enable_dcor(0);
+               params->features &= ~PREV_DEFECT_COR;
+       }
+
+       if (ISP_ABS_PREV_GAMMABYPASS & preview_struct->flag) {
+               isppreview_enable_gammabypass(1);
+               params->features |= PREV_GAMMA_BYPASS;
+       } else {
+               isppreview_enable_gammabypass(0);
+               params->features &= ~PREV_GAMMA_BYPASS;
+       }
+
+       isp_table_update.update = preview_struct->update;
+       isp_table_update.flag = preview_struct->flag;
+       isp_table_update.prev_nf = preview_struct->prev_nf;
+       isp_table_update.red_gamma = preview_struct->red_gamma;
+       isp_table_update.green_gamma = preview_struct->green_gamma;
+       isp_table_update.blue_gamma = preview_struct->blue_gamma;
+
+       if (omap34xx_isp_tables_update(&isp_table_update))
+               goto err_copy_from_user;
+
+       return 0;
+
+err_copy_from_user:
+       printk(KERN_ERR "Preview Config: Copy From User Error\n");
+       return -EFAULT;
+}
+EXPORT_SYMBOL_GPL(omap34xx_isp_preview_config);
+
+/**
+ * omap34xx_isp_tables_update - Abstraction layer Tables update.
+ * @isptables_struct: Pointer from Userspace to structure with flags and table
+ *                 data to update.
+ **/
+int omap34xx_isp_tables_update(struct isptables_update *isptables_struct)
+{
+
+       if (ISP_ABS_TBL_NF & isptables_struct->flag) {
+               nf_enable = 1;
+               params->features |= PREV_NOISE_FILTER;
+               if (ISP_ABS_TBL_NF & isptables_struct->update) {
+                       if (copy_from_user(&prev_nf_t, (struct ispprev_nf *)
+                                          isptables_struct->prev_nf,
+                                          sizeof(struct ispprev_nf)))
+                               goto err_copy_from_user;
+
+                       nf_update = 1;
+               } else
+                       nf_update = 0;
+       } else {
+               nf_enable = 0;
+               params->features &= ~PREV_NOISE_FILTER;
+               if (ISP_ABS_TBL_NF & isptables_struct->update)
+                       nf_update = 1;
+               else
+                       nf_update = 0;
+       }
+
+       if (ISP_ABS_TBL_REDGAMMA & isptables_struct->update) {
+               if (copy_from_user(redgamma_table, isptables_struct->red_gamma,
+                                  sizeof(redgamma_table))) {
+                       goto err_copy_from_user;
+               }
+               rg_update = 1;
+       } else
+               rg_update = 0;
+
+       if (ISP_ABS_TBL_GREENGAMMA & isptables_struct->update) {
+               if (copy_from_user(greengamma_table,
+                                  isptables_struct->green_gamma,
+                                  sizeof(greengamma_table)))
+                       goto err_copy_from_user;
+               gg_update = 1;
+       } else
+               gg_update = 0;
+
+       if (ISP_ABS_TBL_BLUEGAMMA & isptables_struct->update) {
+               if (copy_from_user(bluegamma_table,
+                                  isptables_struct->blue_gamma,
+                                  sizeof(bluegamma_table))) {
+                       goto err_copy_from_user;
+               }
+               bg_update = 1;
+       } else
+               bg_update = 0;
+
+       return 0;
+
+err_copy_from_user:
+       printk(KERN_ERR "Preview Tables:Copy From User Error\n");
+       return -EFAULT;
+}
+
+/**
+ * isppreview_config_shadow_registers - Program shadow registers for preview.
+ *
+ * Allows user to program shadow registers associated with preview module.
+ **/
+void isppreview_config_shadow_registers()
+{
+       u8 current_brightness_contrast;
+       int ctr, prv_disabled;
+
+       isppreview_query_brightness(&current_brightness_contrast);
+       if (current_brightness_contrast !=
+           (ispprev_obj.brightness * ISPPRV_BRIGHT_UNITS)) {
+               DPRINTK_ISPPREV(" Changing Brightness level to %d\n",
+                               ispprev_obj.brightness);
+               isppreview_config_brightness(ispprev_obj.brightness *
+                                            ISPPRV_BRIGHT_UNITS);
+       }
+
+       isppreview_query_contrast(&current_brightness_contrast);
+       if (current_brightness_contrast !=
+           (ispprev_obj.contrast * ISPPRV_CONTRAST_UNITS)) {
+               DPRINTK_ISPPREV(" Changing Contrast level to %d\n",
+                               ispprev_obj.contrast);
+               isppreview_config_contrast(ispprev_obj.contrast *
+                                          ISPPRV_CONTRAST_UNITS);
+       }
+       if (update_color_matrix) {
+               isppreview_config_rgb_to_ycbcr(flr_prev_csc[ispprev_obj.color]);
+               update_color_matrix = 0;
+       }
+       if (gg_update || rg_update || bg_update || nf_update) {
+               isppreview_enable(0);
+               prv_disabled = 1;
+       }
+
+       if (gg_update) {
+               isp_reg_writel(ISPPRV_TBL_ADDR_GREEN_G_START,
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+
+               for (ctr = 0; ctr < ISP_GAMMA_TABLE_SIZE; ctr++) {
+                       isp_reg_writel(greengamma_table[ctr],
+                                      OMAP3_ISP_IOMEM_PREV,
+                                      ISPPRV_SET_TBL_DATA);
+               }
+               gg_update = 0;
+       }
+
+       if (rg_update) {
+               isp_reg_writel(ISPPRV_TBL_ADDR_RED_G_START,
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+
+               for (ctr = 0; ctr < ISP_GAMMA_TABLE_SIZE; ctr++) {
+                       isp_reg_writel(redgamma_table[ctr],
+                                      OMAP3_ISP_IOMEM_PREV,
+                                      ISPPRV_SET_TBL_DATA);
+               }
+               rg_update = 0;
+       }
+
+       if (bg_update) {
+               isp_reg_writel(ISPPRV_TBL_ADDR_BLUE_G_START,
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+
+               for (ctr = 0; ctr < ISP_GAMMA_TABLE_SIZE; ctr++) {
+                       isp_reg_writel(bluegamma_table[ctr],
+                                      OMAP3_ISP_IOMEM_PREV,
+                                      ISPPRV_SET_TBL_DATA);
+               }
+               bg_update = 0;
+       }
+
+       if (nf_update && nf_enable) {
+               isp_reg_writel(0xC00,
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+               isp_reg_writel(prev_nf_t.spread,
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_NF);
+               for (ctr = 0; ctr < ISPPRV_NF_TBL_SIZE; ctr++) {
+                       isp_reg_writel(prev_nf_t.table[ctr],
+                                      OMAP3_ISP_IOMEM_PREV,
+                                      ISPPRV_SET_TBL_DATA);
+               }
+               isppreview_enable_noisefilter(1);
+               nf_update = 0;
+       }
+
+       if (~nf_update && nf_enable)
+               isppreview_enable_noisefilter(1);
+
+       if (nf_update && ~nf_enable)
+               isppreview_enable_noisefilter(0);
+
+       if (prv_disabled) {
+               isppreview_enable(1);
+               prv_disabled = 0;
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_config_shadow_registers);
+
+/**
+ * isppreview_request - Reserves the preview module.
+ *
+ * Returns 0 if successful, or -EBUSY if the module was already reserved.
+ **/
+int isppreview_request()
+{
+       mutex_lock(&ispprev_obj.ispprev_mutex);
+       if (ispprev_obj.prev_inuse) {
+               mutex_unlock(&ispprev_obj.ispprev_mutex);
+               printk(KERN_ERR "ISP_ERR : Preview Module Busy\n");
+               return -EBUSY;
+       }
+       ispprev_obj.prev_inuse = 1;
+       mutex_unlock(&ispprev_obj.ispprev_mutex);
+       isp_reg_or(OMAP3_ISP_IOMEM_MAIN, ISP_CTRL, ISPCTRL_PREV_RAM_EN |
+                  ISPCTRL_PREV_CLK_EN |
+                  ISPCTRL_SBL_WR1_RAM_EN);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_request);
+
+/**
+ * isppreview_free - Frees the preview module.
+ *
+ * Returns 0 if successful, or -EINVAL if the module was already freed.
+ **/
+int isppreview_free()
+{
+       mutex_lock(&ispprev_obj.ispprev_mutex);
+       if (ispprev_obj.prev_inuse) {
+               ispprev_obj.prev_inuse = 0;
+               mutex_unlock(&ispprev_obj.ispprev_mutex);
+               isp_reg_and(OMAP3_ISP_IOMEM_MAIN, ISP_CTRL,
+                           ~(ISPCTRL_PREV_CLK_EN |
+                             ISPCTRL_PREV_RAM_EN |
+                             ISPCTRL_SBL_WR1_RAM_EN));
+               return 0;
+       } else {
+               mutex_unlock(&ispprev_obj.ispprev_mutex);
+               DPRINTK_ISPPREV("ISP_ERR : Preview Module already freed\n");
+               return -EINVAL;
+       }
+
+}
+EXPORT_SYMBOL_GPL(isppreview_free);
+
+/** isppreview_config_datapath - Specifies input and output modules for Preview
+ * @input: Indicates the module that gives the image to preview.
+ * @output: Indicates the module to which the preview outputs to.
+ *
+ * Configures the default configuration for the CCDC to work with.
+ *
+ * The valid values for the input are PRV_RAW_CCDC (0), PRV_RAW_MEM (1),
+ * PRV_RGBBAYERCFA (2), PRV_COMPCFA (3), PRV_CCDC_DRKF (4), PRV_OTHERS (5).
+ *
+ * The valid values for the output are PREVIEW_RSZ (0), PREVIEW_MEM (1).
+ *
+ * Returns 0 if successful, or -EINVAL if wrong input or output values are
+ * specified.
+ **/
+int isppreview_config_datapath(enum preview_input input,
+                              enum preview_output output)
+{
+       u32 pcr = 0;
+       u8 enable = 0;
+       struct prev_params *params = prev_config_params;
+       struct ispprev_yclimit yclimit;
+
+       pcr = isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR);
+
+       switch (input) {
+       case PRV_RAW_CCDC:
+               pcr &= ~ISPPRV_PCR_SOURCE;
+               pcr &= ~ISPPRV_PCR_ONESHOT;
+               ispprev_obj.prev_inpfmt = PRV_RAW_CCDC;
+               break;
+       case PRV_RAW_MEM:
+               pcr |= ISPPRV_PCR_SOURCE;
+               pcr |= ISPPRV_PCR_ONESHOT;
+               ispprev_obj.prev_inpfmt = PRV_RAW_MEM;
+               break;
+       case PRV_CCDC_DRKF:
+               pcr |= ISPPRV_PCR_DRKFCAP;
+               pcr |= ISPPRV_PCR_ONESHOT;
+               ispprev_obj.prev_inpfmt = PRV_CCDC_DRKF;
+               break;
+       case PRV_COMPCFA:
+               ispprev_obj.prev_inpfmt = PRV_COMPCFA;
+               break;
+       case PRV_OTHERS:
+               ispprev_obj.prev_inpfmt = PRV_OTHERS;
+               break;
+       case PRV_RGBBAYERCFA:
+               ispprev_obj.prev_inpfmt = PRV_RGBBAYERCFA;
+               break;
+       default:
+               printk(KERN_ERR "ISP_ERR : Wrong Input\n");
+               return -EINVAL;
+       };
+
+       switch (output) {
+       case PREVIEW_RSZ:
+               pcr |= ISPPRV_PCR_RSZPORT;
+               pcr &= ~ISPPRV_PCR_SDRPORT;
+               break;
+       case PREVIEW_MEM:
+               pcr &= ~ISPPRV_PCR_RSZPORT;
+               pcr |= ISPPRV_PCR_SDRPORT;
+               break;
+       default:
+               printk(KERN_ERR "ISP_ERR : Wrong Output\n");
+               return -EINVAL;
+       }
+       ispprev_obj.prev_outfmt = output;
+
+       isp_reg_writel(pcr, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR);
+
+       isppreview_config_ycpos(params->pix_fmt);
+
+       if (params->cfa.cfa_table != NULL)
+               isppreview_config_cfa(params->cfa);
+       if (params->csup.hypf_en == 1)
+               isppreview_config_chroma_suppression(params->csup);
+       if (params->ytable != NULL)
+               isppreview_config_luma_enhancement(params->ytable);
+
+       if (params->gtable.redtable != NULL)
+               isppreview_config_gammacorrn(params->gtable);
+
+       enable = (params->features & PREV_CFA) ? 1 : 0;
+       isppreview_enable_cfa(enable);
+
+       enable = (params->features & PREV_CHROMA_SUPPRESS) ? 1 : 0;
+       isppreview_enable_chroma_suppression(enable);
+
+       enable = (params->features & PREV_LUMA_ENHANCE) ? 1 : 0;
+       isppreview_enable_luma_enhancement(enable);
+
+       enable = (params->features & PREV_NOISE_FILTER) ? 1 : 0;
+       if (enable)
+               isppreview_config_noisefilter(params->nf);
+       isppreview_enable_noisefilter(enable);
+
+       enable = (params->features & PREV_DEFECT_COR) ? 1 : 0;
+       if (enable)
+               isppreview_config_dcor(params->dcor);
+       isppreview_enable_dcor(enable);
+
+       enable = (params->features & PREV_GAMMA_BYPASS) ? 1 : 0;
+       isppreview_enable_gammabypass(enable);
+
+       isppreview_config_whitebalance(params->wbal);
+       isppreview_config_blkadj(params->blk_adj);
+       isppreview_config_rgb_blending(params->rgb2rgb);
+       isppreview_config_rgb_to_ycbcr(params->rgb2ycbcr);
+
+       isppreview_config_contrast(params->contrast * ISPPRV_CONTRAST_UNITS);
+       isppreview_config_brightness(params->brightness * ISPPRV_BRIGHT_UNITS);
+
+       yclimit.minC = ISPPRV_YC_MIN;
+       yclimit.maxC = ISPPRV_YC_MAX;
+       yclimit.minY = ISPPRV_YC_MIN;
+       yclimit.maxY = ISPPRV_YC_MAX;
+       isppreview_config_yc_range(yclimit);
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_config_datapath);
+
+/**
+ * isppreview_set_skip - Set the number of rows/columns that should be skipped.
+ *  h - Start Pixel Horizontal.
+ *  v - Start Line Vertical.
+ **/
+void isppreview_set_skip(u32 h, u32 v)
+{
+       ispprev_obj.sph = h;
+       ispprev_obj.slv = v;
+}
+EXPORT_SYMBOL_GPL(isppreview_set_skip);
+
+/**
+ * isppreview_config_ycpos - Configure byte layout of YUV image.
+ * @mode: Indicates the required byte layout.
+ **/
+void isppreview_config_ycpos(enum preview_ycpos_mode mode)
+{
+       u32 pcr = isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR);
+       pcr &= ~ISPPRV_PCR_YCPOS_CrYCbY;
+       pcr |= (mode << ISPPRV_PCR_YCPOS_SHIFT);
+       isp_reg_writel(pcr, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_ycpos);
+
+/**
+ * isppreview_config_averager - Enable / disable / configure averager
+ * @average: Average value to be configured.
+ **/
+void isppreview_config_averager(u8 average)
+{
+       int reg = 0;
+
+       reg = AVE_ODD_PIXEL_DIST | AVE_EVEN_PIXEL_DIST | average;
+       isp_reg_writel(reg, OMAP3_ISP_IOMEM_PREV, ISPPRV_AVE);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_averager);
+
+/**
+ * isppreview_enable_invalaw - Enable/Disable Inverse A-Law module in Preview.
+ * @enable: 1 - Reverse the A-Law done in CCDC.
+ **/
+void isppreview_enable_invalaw(u8 enable)
+{
+       u32 pcr_val = 0;
+       pcr_val = isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR);
+
+       if (enable) {
+               isp_reg_writel(pcr_val | ISPPRV_PCR_WIDTH | ISPPRV_PCR_INVALAW,
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR);
+       } else {
+               isp_reg_writel(pcr_val &
+                              ~(ISPPRV_PCR_WIDTH | ISPPRV_PCR_INVALAW),
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR);
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_invalaw);
+
+/**
+ * isppreview_enable_drkframe - Enable/Disable of the darkframe subtract.
+ * @enable: 1 - Acquires memory bandwidth since the pixels in each frame is
+ *          subtracted with the pixels in the current frame.
+ *
+ * The proccess is applied for each captured frame.
+ **/
+void isppreview_enable_drkframe(u8 enable)
+{
+       if (enable)
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DRKFEN);
+       else {
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                           ~ISPPRV_PCR_DRKFEN);
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_drkframe);
+
+/**
+ * isppreview_enable_shadcomp - Enables/Disables the shading compensation.
+ * @enable: 1 - Enables the shading compensation.
+ *
+ * If dark frame subtract won't be used, then enable this shading
+ * compensation.
+ **/
+void isppreview_enable_shadcomp(u8 enable)
+{
+
+       if (enable) {
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                          ISPPRV_PCR_SCOMP_EN);
+               isppreview_enable_drkframe(1);
+       } else {
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                           ~ISPPRV_PCR_SCOMP_EN);
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_shadcomp);
+
+/**
+ * isppreview_config_drkf_shadcomp - Configures shift value in shading comp.
+ * @scomp_shtval: 3bit value of shift used in shading compensation.
+ **/
+void isppreview_config_drkf_shadcomp(u8 scomp_shtval)
+{
+       u32 pcr_val = isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR);
+
+       pcr_val &= ISPPRV_PCR_SCOMP_SFT_MASK;
+       isp_reg_writel(pcr_val | (scomp_shtval << ISPPRV_PCR_SCOMP_SFT_SHIFT),
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_drkf_shadcomp);
+
+/**
+ * isppreview_enable_hmed - Enables/Disables of the Horizontal Median Filter.
+ * @enable: 1 - Enables Horizontal Median Filter.
+ **/
+void isppreview_enable_hmed(u8 enable)
+{
+       if (enable)
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_HMEDEN);
+       else {
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                           ~ISPPRV_PCR_HMEDEN);
+       }
+       ispprev_obj.hmed_en = enable ? 1 : 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_hmed);
+
+/**
+ * isppreview_config_hmed - Configures the Horizontal Median Filter.
+ * @prev_hmed: Structure containing the odd and even distance between the
+ *             pixels in the image along with the filter threshold.
+ **/
+void isppreview_config_hmed(struct ispprev_hmed prev_hmed)
+{
+
+       u32 odddist = 0;
+       u32 evendist = 0;
+
+       if (prev_hmed.odddist == 1)
+               odddist = ~ISPPRV_HMED_ODDDIST;
+       else
+               odddist = ISPPRV_HMED_ODDDIST;
+
+       if (prev_hmed.evendist == 1)
+               evendist = ~ISPPRV_HMED_EVENDIST;
+       else
+               evendist = ISPPRV_HMED_EVENDIST;
+
+       isp_reg_writel(odddist | evendist | (prev_hmed.thres <<
+                                            ISPPRV_HMED_THRESHOLD_SHIFT),
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_HMED);
+
+}
+EXPORT_SYMBOL_GPL(isppreview_config_hmed);
+
+/**
+ * isppreview_config_noisefilter - Configures the Noise Filter.
+ * @prev_nf: Structure containing the noisefilter table, strength to be used
+ *           for the noise filter and the defect correction enable flag.
+ **/
+void isppreview_config_noisefilter(struct ispprev_nf prev_nf)
+{
+       int i = 0;
+
+       isp_reg_writel(prev_nf.spread, OMAP3_ISP_IOMEM_PREV, ISPPRV_NF);
+       isp_reg_writel(ISPPRV_NF_TABLE_ADDR, OMAP3_ISP_IOMEM_PREV,
+                      ISPPRV_SET_TBL_ADDR);
+       for (i = 0; i < ISPPRV_NF_TBL_SIZE; i++) {
+               isp_reg_writel(prev_nf.table[i], OMAP3_ISP_IOMEM_PREV,
+                              ISPPRV_SET_TBL_DATA);
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_config_noisefilter);
+
+/**
+ * isppreview_config_dcor - Configures the defect correction
+ * @prev_nf: Structure containing the defect correction structure
+ **/
+void isppreview_config_dcor(struct ispprev_dcor prev_dcor)
+{
+       if (prev_dcor.couplet_mode_en) {
+               isp_reg_writel(prev_dcor.detect_correct[0],
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR0);
+               isp_reg_writel(prev_dcor.detect_correct[1],
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR1);
+               isp_reg_writel(prev_dcor.detect_correct[2],
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR2);
+               isp_reg_writel(prev_dcor.detect_correct[3],
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR3);
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DCCOUP);
+       } else {
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                           ~ISPPRV_PCR_DCCOUP);
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_config_dcor);
+
+/**
+ * isppreview_config_cfa - Configures the CFA Interpolation parameters.
+ * @prev_cfa: Structure containing the CFA interpolation table, CFA format
+ *            in the image, vertical and horizontal gradient threshold.
+ **/
+void isppreview_config_cfa(struct ispprev_cfa prev_cfa)
+{
+       int i = 0;
+
+       ispprev_obj.cfafmt = prev_cfa.cfafmt;
+
+       isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                  (prev_cfa.cfafmt << ISPPRV_PCR_CFAFMT_SHIFT));
+
+       isp_reg_writel(
+               (prev_cfa.cfa_gradthrs_vert << ISPPRV_CFA_GRADTH_VER_SHIFT) |
+               (prev_cfa.cfa_gradthrs_horz << ISPPRV_CFA_GRADTH_HOR_SHIFT),
+               OMAP3_ISP_IOMEM_PREV, ISPPRV_CFA);
+
+       isp_reg_writel(ISPPRV_CFA_TABLE_ADDR, OMAP3_ISP_IOMEM_PREV,
+                      ISPPRV_SET_TBL_ADDR);
+
+       for (i = 0; i < ISPPRV_CFA_TBL_SIZE; i++) {
+               isp_reg_writel(prev_cfa.cfa_table[i],
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_config_cfa);
+
+/**
+ * isppreview_config_gammacorrn - Configures the Gamma Correction table values
+ * @gtable: Structure containing the table for red, blue, green gamma table.
+ **/
+void isppreview_config_gammacorrn(struct ispprev_gtable gtable)
+{
+       int i = 0;
+
+       isp_reg_writel(ISPPRV_REDGAMMA_TABLE_ADDR,
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+       for (i = 0; i < ISPPRV_GAMMA_TBL_SIZE; i++) {
+               isp_reg_writel(gtable.redtable[i],
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
+       }
+
+       isp_reg_writel(ISPPRV_GREENGAMMA_TABLE_ADDR,
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+       for (i = 0; i < ISPPRV_GAMMA_TBL_SIZE; i++) {
+               isp_reg_writel(gtable.greentable[i],
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
+       }
+
+       isp_reg_writel(ISPPRV_BLUEGAMMA_TABLE_ADDR,
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+       for (i = 0; i < ISPPRV_GAMMA_TBL_SIZE; i++) {
+               isp_reg_writel(gtable.bluetable[i],
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_config_gammacorrn);
+
+/**
+ * isppreview_config_luma_enhancement - Sets the Luminance Enhancement table.
+ * @ytable: Structure containing the table for Luminance Enhancement table.
+ **/
+void isppreview_config_luma_enhancement(u32 *ytable)
+{
+       int i = 0;
+
+       isp_reg_writel(ISPPRV_YENH_TABLE_ADDR,
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
+       for (i = 0; i < ISPPRV_YENH_TBL_SIZE; i++) {
+               isp_reg_writel(ytable[i],
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_config_luma_enhancement);
+
+/**
+ * isppreview_config_chroma_suppression - Configures the Chroma Suppression.
+ * @csup: Structure containing the threshold value for suppression
+ *        and the hypass filter enable flag.
+ **/
+void isppreview_config_chroma_suppression(struct ispprev_csup csup)
+{
+       isp_reg_writel(csup.gain | (csup.thres << ISPPRV_CSUP_THRES_SHIFT) |
+                      (csup.hypf_en << ISPPRV_CSUP_HPYF_SHIFT),
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_CSUP);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_chroma_suppression);
+
+/**
+ * isppreview_enable_noisefilter - Enables/Disables the Noise Filter.
+ * @enable: 1 - Enables the Noise Filter.
+ **/
+void isppreview_enable_noisefilter(u8 enable)
+{
+       if (enable)
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_NFEN);
+       else
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ~ISPPRV_PCR_NFEN);
+       ispprev_obj.nf_en = enable ? 1 : 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_noisefilter);
+
+/**
+ * isppreview_enable_dcor - Enables/Disables the defect correction.
+ * @enable: 1 - Enables the defect correction.
+ **/
+void isppreview_enable_dcor(u8 enable)
+{
+       if (enable)
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_DCOREN);
+       else {
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                           ~ISPPRV_PCR_DCOREN);
+       }
+       ispprev_obj.dcor_en = enable ? 1 : 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_dcor);
+
+/**
+ * isppreview_enable_cfa - Enable/Disable the CFA Interpolation.
+ * @enable: 1 - Enables the CFA.
+ **/
+void isppreview_enable_cfa(u8 enable)
+{
+       if (enable)
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_CFAEN);
+       else {
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                           ~ISPPRV_PCR_CFAEN);
+       }
+       ispprev_obj.cfa_en = enable ? 1 : 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_cfa);
+
+/**
+ * isppreview_enable_gammabypass - Enables/Disables the GammaByPass
+ * @enable: 1 - Bypasses Gamma - 10bit input is cropped to 8MSB.
+ *          0 - Goes through Gamma Correction. input and output is 10bit.
+ **/
+void isppreview_enable_gammabypass(u8 enable)
+{
+       if (enable) {
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                          ISPPRV_PCR_GAMMA_BYPASS);
+       } else {
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                           ~ISPPRV_PCR_GAMMA_BYPASS);
+       }
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_gammabypass);
+
+/**
+ * isppreview_enable_luma_enhancement - Enables/Disables Luminance Enhancement
+ * @enable: 1 - Enable the Luminance Enhancement.
+ **/
+void isppreview_enable_luma_enhancement(u8 enable)
+{
+       if (enable) {
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                          ISPPRV_PCR_YNENHEN);
+       } else {
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                           ~ISPPRV_PCR_YNENHEN);
+       }
+       ispprev_obj.yenh_en = enable ? 1 : 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_luma_enhancement);
+
+/**
+ * isppreview_enable_chroma_suppression - Enables/Disables Chrominance Suppr.
+ * @enable: 1 - Enable the Chrominance Suppression.
+ **/
+void isppreview_enable_chroma_suppression(u8 enable)
+{
+       if (enable)
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_SUPEN);
+       else {
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
+                           ~ISPPRV_PCR_SUPEN);
+       }
+       ispprev_obj.csup_en = enable ? 1 : 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_enable_chroma_suppression);
+
+/**
+ * isppreview_config_whitebalance - Configures the White Balance parameters.
+ * @prev_wbal: Structure containing the digital gain and white balance
+ *             coefficient.
+ *
+ * Coefficient matrix always with default values.
+ **/
+void isppreview_config_whitebalance(struct ispprev_wbal prev_wbal)
+{
+       u32 val;
+
+       isp_reg_writel(prev_wbal.dgain, OMAP3_ISP_IOMEM_PREV, ISPPRV_WB_DGAIN);
+
+       val = prev_wbal.coef0 << ISPPRV_WBGAIN_COEF0_SHIFT;
+       val |= prev_wbal.coef1 << ISPPRV_WBGAIN_COEF1_SHIFT;
+       val |= prev_wbal.coef2 << ISPPRV_WBGAIN_COEF2_SHIFT;
+       val |= prev_wbal.coef3 << ISPPRV_WBGAIN_COEF3_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_WBGAIN);
+
+       isp_reg_writel(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);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_whitebalance);
+
+/**
+ * isppreview_config_whitebalance2 - Configures the White Balance parameters.
+ * @prev_wbal: Structure containing the digital gain and white balance
+ *             coefficient.
+ *
+ * Coefficient matrix can be changed.
+ **/
+void isppreview_config_whitebalance2(struct prev_white_balance prev_wbal)
+{
+       isp_reg_writel(prev_wbal.wb_dgain,
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_WB_DGAIN);
+       isp_reg_writel(prev_wbal.wb_gain[0] |
+                      prev_wbal.wb_gain[1] << ISPPRV_WBGAIN_COEF1_SHIFT |
+                      prev_wbal.wb_gain[2] << ISPPRV_WBGAIN_COEF2_SHIFT |
+                      prev_wbal.wb_gain[3] << ISPPRV_WBGAIN_COEF3_SHIFT,
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_WBGAIN);
+
+       isp_reg_writel(
+               prev_wbal.wb_coefmatrix[0][0] << ISPPRV_WBSEL_N0_0_SHIFT |
+               prev_wbal.wb_coefmatrix[0][1] << ISPPRV_WBSEL_N0_1_SHIFT |
+               prev_wbal.wb_coefmatrix[0][2] << ISPPRV_WBSEL_N0_2_SHIFT |
+               prev_wbal.wb_coefmatrix[0][3] << ISPPRV_WBSEL_N0_3_SHIFT |
+               prev_wbal.wb_coefmatrix[1][0] << ISPPRV_WBSEL_N1_0_SHIFT |
+               prev_wbal.wb_coefmatrix[1][1] << ISPPRV_WBSEL_N1_1_SHIFT |
+               prev_wbal.wb_coefmatrix[1][2] << ISPPRV_WBSEL_N1_2_SHIFT |
+               prev_wbal.wb_coefmatrix[1][3] << ISPPRV_WBSEL_N1_3_SHIFT |
+               prev_wbal.wb_coefmatrix[2][0] << ISPPRV_WBSEL_N2_0_SHIFT |
+               prev_wbal.wb_coefmatrix[2][1] << ISPPRV_WBSEL_N2_1_SHIFT |
+               prev_wbal.wb_coefmatrix[2][2] << ISPPRV_WBSEL_N2_2_SHIFT |
+               prev_wbal.wb_coefmatrix[2][3] << ISPPRV_WBSEL_N2_3_SHIFT |
+               prev_wbal.wb_coefmatrix[3][0] << ISPPRV_WBSEL_N3_0_SHIFT |
+               prev_wbal.wb_coefmatrix[3][1] << ISPPRV_WBSEL_N3_1_SHIFT |
+               prev_wbal.wb_coefmatrix[3][2] << ISPPRV_WBSEL_N3_2_SHIFT |
+               prev_wbal.wb_coefmatrix[3][3] << ISPPRV_WBSEL_N3_3_SHIFT,
+               OMAP3_ISP_IOMEM_PREV, ISPPRV_WBSEL);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_whitebalance2);
+
+/**
+ * isppreview_config_blkadj - Configures the Black Adjustment parameters.
+ * @prev_blkadj: Structure containing the black adjustment towards red, green,
+ *               blue.
+ **/
+void isppreview_config_blkadj(struct ispprev_blkadj prev_blkadj)
+{
+       isp_reg_writel(prev_blkadj.blue |
+                      (prev_blkadj.green << ISPPRV_BLKADJOFF_G_SHIFT) |
+                      (prev_blkadj.red << ISPPRV_BLKADJOFF_R_SHIFT),
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_BLKADJOFF);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_blkadj);
+
+/**
+ * isppreview_config_rgb_blending - Configures the RGB-RGB Blending matrix.
+ * @rgb2rgb: Structure containing the rgb to rgb blending matrix and the rgb
+ *           offset.
+ **/
+void isppreview_config_rgb_blending(struct ispprev_rgbtorgb rgb2rgb)
+{
+       u32 val = 0;
+
+       val = (rgb2rgb.matrix[0][0] & 0xfff) << ISPPRV_RGB_MAT1_MTX_RR_SHIFT;
+       val |= (rgb2rgb.matrix[0][1] & 0xfff) << ISPPRV_RGB_MAT1_MTX_GR_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT1);
+
+       val = (rgb2rgb.matrix[0][2] & 0xfff) << ISPPRV_RGB_MAT2_MTX_BR_SHIFT;
+       val |= (rgb2rgb.matrix[1][0] & 0xfff) << ISPPRV_RGB_MAT2_MTX_RG_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT2);
+
+       val = (rgb2rgb.matrix[1][1] & 0xfff) << ISPPRV_RGB_MAT3_MTX_GG_SHIFT;
+       val |= (rgb2rgb.matrix[1][2] & 0xfff) << ISPPRV_RGB_MAT3_MTX_BG_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT3);
+
+       val = (rgb2rgb.matrix[2][0] & 0xfff) << ISPPRV_RGB_MAT4_MTX_RB_SHIFT;
+       val |= (rgb2rgb.matrix[2][1] & 0xfff) << ISPPRV_RGB_MAT4_MTX_GB_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT4);
+
+       val = (rgb2rgb.matrix[2][2] & 0xfff) << ISPPRV_RGB_MAT5_MTX_BB_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT5);
+
+       val = (rgb2rgb.offset[0] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFG_SHIFT;
+       val |= (rgb2rgb.offset[1] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFR_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF1);
+
+       val = (rgb2rgb.offset[2] & 0x3ff) << ISPPRV_RGB_OFF2_MTX_OFFB_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF2);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_rgb_blending);
+
+/**
+ * Configures the RGB-YCbYCr conversion matrix
+ * @prev_csc: Structure containing the RGB to YCbYCr matrix and the
+ *            YCbCr offset.
+ **/
+void isppreview_config_rgb_to_ycbcr(struct ispprev_csc prev_csc)
+{
+       u32 val = 0;
+
+       val = (prev_csc.matrix[0][0] & 0x3ff) << ISPPRV_CSC0_RY_SHIFT;
+       val |= (prev_csc.matrix[0][1] & 0x3ff) << ISPPRV_CSC0_GY_SHIFT;
+       val |= (prev_csc.matrix[0][2] & 0x3ff) << ISPPRV_CSC0_BY_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC0);
+
+       val = (prev_csc.matrix[1][0] & 0x3ff) << ISPPRV_CSC1_RCB_SHIFT;
+       val |= (prev_csc.matrix[1][1] & 0x3ff) << ISPPRV_CSC1_GCB_SHIFT;
+       val |= (prev_csc.matrix[1][2] & 0x3ff) << ISPPRV_CSC1_BCB_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC1);
+
+       val = (prev_csc.matrix[2][0] & 0x3ff) << ISPPRV_CSC2_RCR_SHIFT;
+       val |= (prev_csc.matrix[2][1] & 0x3ff) << ISPPRV_CSC2_GCR_SHIFT;
+       val |= (prev_csc.matrix[2][2] & 0x3ff) << ISPPRV_CSC2_BCR_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC2);
+
+       val = (prev_csc.offset[0] & 0xff) << ISPPRV_CSC_OFFSET_CR_SHIFT;
+       val |= (prev_csc.offset[1] & 0xff) << ISPPRV_CSC_OFFSET_CB_SHIFT;
+       val |= (prev_csc.offset[2] & 0xff) << ISPPRV_CSC_OFFSET_Y_SHIFT;
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC_OFFSET);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_rgb_to_ycbcr);
+
+/**
+ * isppreview_query_contrast - Query the contrast.
+ * @contrast: Pointer to hold the current programmed contrast value.
+ **/
+void isppreview_query_contrast(u8 *contrast)
+{
+       u32 brt_cnt_val = 0;
+
+       brt_cnt_val = isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT);
+       *contrast = (brt_cnt_val >> ISPPRV_CNT_BRT_CNT_SHIFT) & 0xff;
+       DPRINTK_ISPPREV(" Current brt cnt value in hw is %x\n", brt_cnt_val);
+}
+EXPORT_SYMBOL_GPL(isppreview_query_contrast);
+
+/**
+ * isppreview_update_contrast - Updates the contrast.
+ * @contrast: Pointer to hold the current programmed contrast value.
+ *
+ * Value should be programmed before enabling the module.
+ **/
+void isppreview_update_contrast(u8 *contrast)
+{
+       ispprev_obj.contrast = *contrast;
+}
+EXPORT_SYMBOL_GPL(isppreview_update_contrast);
+
+/**
+ * isppreview_config_contrast - Configures the Contrast.
+ * @contrast: 8 bit value in U8Q4 format.
+ *
+ * Value should be programmed before enabling the module.
+ **/
+void isppreview_config_contrast(u8 contrast)
+{
+       u32 brt_cnt_val = 0;
+
+       brt_cnt_val = isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT);
+       brt_cnt_val &= ~(0xff << ISPPRV_CNT_BRT_CNT_SHIFT);
+       contrast &= 0xff;
+       isp_reg_writel(brt_cnt_val | contrast << ISPPRV_CNT_BRT_CNT_SHIFT,
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_contrast);
+
+/**
+ * isppreview_get_contrast_range - Gets the range contrast value.
+ * @min_contrast: Pointer to hold the minimum Contrast value.
+ * @max_contrast: Pointer to hold the maximum Contrast value.
+ **/
+void isppreview_get_contrast_range(u8 *min_contrast, u8 *max_contrast)
+{
+       *min_contrast = ISPPRV_CONTRAST_MIN;
+       *max_contrast = ISPPRV_CONTRAST_MAX;
+}
+EXPORT_SYMBOL_GPL(isppreview_get_contrast_range);
+
+/**
+ * isppreview_update_brightness - Updates the brightness in preview module.
+ * @brightness: Pointer to hold the current programmed brightness value.
+ *
+ **/
+void isppreview_update_brightness(u8 *brightness)
+{
+       ispprev_obj.brightness = *brightness;
+}
+EXPORT_SYMBOL_GPL(isppreview_update_brightness);
+
+/**
+ * isppreview_config_brightness - Configures the brightness.
+ * @contrast: 8bitvalue in U8Q0 format.
+ **/
+void isppreview_config_brightness(u8 brightness)
+{
+       u32 brt_cnt_val = 0;
+
+       DPRINTK_ISPPREV("\tConfiguring brightness in ISP: %d\n", brightness);
+       brt_cnt_val = isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT);
+       brt_cnt_val &= ~(0xff << ISPPRV_CNT_BRT_BRT_SHIFT);
+       brightness &= 0xff;
+       isp_reg_writel(brt_cnt_val | brightness << ISPPRV_CNT_BRT_BRT_SHIFT,
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_brightness);
+
+/**
+ * isppreview_query_brightness - Query the brightness.
+ * @brightness: Pointer to hold the current programmed brightness value.
+ **/
+void isppreview_query_brightness(u8 *brightness)
+{
+       *brightness = isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT);
+}
+EXPORT_SYMBOL_GPL(isppreview_query_brightness);
+
+/**
+ * isppreview_get_brightness_range - Gets the range brightness value
+ * @min_brightness: Pointer to hold the minimum brightness value
+ * @max_brightness: Pointer to hold the maximum brightness value
+ **/
+void isppreview_get_brightness_range(u8 *min_brightness, u8 *max_brightness)
+{
+       *min_brightness = ISPPRV_BRIGHT_MIN;
+       *max_brightness = ISPPRV_BRIGHT_MAX;
+}
+EXPORT_SYMBOL_GPL(isppreview_get_brightness_range);
+
+/**
+ * isppreview_set_color - Sets the color effect.
+ * @mode: Indicates the required color effect.
+ **/
+void isppreview_set_color(u8 *mode)
+{
+       ispprev_obj.color = *mode;
+       update_color_matrix = 1;
+}
+EXPORT_SYMBOL_GPL(isppreview_set_color);
+
+/**
+ * isppreview_get_color - Gets the current color effect.
+ * @mode: Indicates the current color effect.
+ **/
+void isppreview_get_color(u8 *mode)
+{
+       *mode = ispprev_obj.color;
+}
+EXPORT_SYMBOL_GPL(isppreview_get_color);
+
+/**
+ * isppreview_config_yc_range - Configures the max and min Y and C values.
+ * @yclimit: Structure containing the range of Y and C values.
+ **/
+void isppreview_config_yc_range(struct ispprev_yclimit yclimit)
+{
+       isp_reg_writel(yclimit.maxC << ISPPRV_SETUP_YC_MAXC_SHIFT |
+                      yclimit.maxY << ISPPRV_SETUP_YC_MAXY_SHIFT |
+                      yclimit.minC << ISPPRV_SETUP_YC_MINC_SHIFT |
+                      yclimit.minY << ISPPRV_SETUP_YC_MINY_SHIFT,
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_SETUP_YC);
+}
+EXPORT_SYMBOL_GPL(isppreview_config_yc_range);
+
+/**
+ * isppreview_try_size - Calculates output dimensions with the modules enabled.
+ * @input_w: input width for the preview in number of pixels per line
+ * @input_h: input height for the preview in number of lines
+ * @output_w: output width from the preview in number of pixels per line
+ * @output_h: output height for the preview in number of lines
+ *
+ * Calculates the number of pixels cropped in the submodules that are enabled,
+ * Fills up the output width height variables in the isp_prev structure.
+ **/
+int isppreview_try_size(u32 input_w, u32 input_h, u32 *output_w, u32 *output_h)
+{
+       u32 prevout_w = input_w;
+       u32 prevout_h = input_h;
+       u32 div = 0;
+       int max_out;
+
+       ispprev_obj.previn_w = input_w;
+       ispprev_obj.previn_h = input_h;
+
+       if (input_w < 32 || input_h < 32) {
+               printk(KERN_ERR "ISP_ERR : preview does not support "
+                      "width < 16 or height < 32 \n");
+               return -EINVAL;
+       }
+       if (omap_rev() == OMAP3430_REV_ES1_0)
+               max_out = ISPPRV_MAXOUTPUT_WIDTH;
+       else
+               max_out = ISPPRV_MAXOUTPUT_WIDTH_ES2;
+
+       ispprev_obj.fmtavg = 0;
+
+       if (input_w > max_out) {
+               div = (input_w/max_out);
+               if (div >= 2 && div < 4) {
+                       ispprev_obj.fmtavg = 1;
+                       prevout_w /= 2;
+               } else if (div >= 4 && div < 8) {
+                       ispprev_obj.fmtavg = 2;
+                       prevout_w /= 4;
+               } else if (div >= 8) {
+                       ispprev_obj.fmtavg = 3;
+                       prevout_w /= 8;
+               }
+       }
+
+       if (ispprev_obj.hmed_en)
+               prevout_w -= 4;
+       if (ispprev_obj.nf_en) {
+               prevout_w -= 4;
+               prevout_h -= 4;
+       }
+       if (ispprev_obj.cfa_en) {
+               switch (ispprev_obj.cfafmt) {
+               case CFAFMT_BAYER:
+               case CFAFMT_SONYVGA:
+                       prevout_w -= 4;
+                       prevout_h -= 4;
+                       break;
+               case CFAFMT_RGBFOVEON:
+               case CFAFMT_RRGGBBFOVEON:
+               case CFAFMT_DNSPL:
+               case CFAFMT_HONEYCOMB:
+                       prevout_h -= 2;
+                       break;
+               };
+       }
+       if (ispprev_obj.yenh_en || ispprev_obj.csup_en)
+               prevout_w -= 2;
+
+       /* Start at the correct row/column by skipping
+        * a Sensor specific amount.
+        */
+       prevout_w -= ispprev_obj.sph;
+       prevout_h -= ispprev_obj.slv;
+
+
+       if (prevout_w % 2)
+               prevout_w -= 1;
+
+       if (ispprev_obj.prev_outfmt == PREVIEW_MEM) {
+               if (((prevout_w * 2) & ISP_32B_BOUNDARY_OFFSET) !=
+                   (prevout_w * 2)) {
+                       prevout_w = ((prevout_w * 2) &
+                                    ISP_32B_BOUNDARY_OFFSET) / 2;
+               }
+       }
+       *output_w = prevout_w;
+       ispprev_obj.prevout_w = prevout_w;
+       *output_h = prevout_h;
+       ispprev_obj.prevout_h = prevout_h;
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_try_size);
+
+/**
+ * isppreview_config_size - Sets the size of ISP preview output.
+ * @input_w: input width for the preview in number of pixels per line
+ * @input_h: input height for the preview in number of lines
+ * @output_w: output width from the preview in number of pixels per line
+ * @output_h: output height for the preview in number of lines
+ *
+ * Configures the appropriate values stored in the isp_prev structure to
+ * HORZ/VERT_INFO. Configures PRV_AVE if needed for downsampling as calculated
+ * in trysize.
+ **/
+int isppreview_config_size(u32 input_w, u32 input_h, u32 output_w, u32 output_h)
+{
+       u32 prevsdroff;
+
+       if ((output_w != ispprev_obj.prevout_w) ||
+           (output_h != ispprev_obj.prevout_h)) {
+               printk(KERN_ERR "ISP_ERR : isppreview_try_size should "
+                      "be called before config size\n");
+               return -EINVAL;
+       }
+
+       isp_reg_writel((ispprev_obj.sph << ISPPRV_HORZ_INFO_SPH_SHIFT) |
+                      (ispprev_obj.previn_w - 1),
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_HORZ_INFO);
+       isp_reg_writel((ispprev_obj.slv << ISPPRV_VERT_INFO_SLV_SHIFT) |
+                      (ispprev_obj.previn_h - 2),
+                      OMAP3_ISP_IOMEM_PREV, ISPPRV_VERT_INFO);
+
+       if (ispprev_obj.cfafmt == CFAFMT_BAYER)
+               isp_reg_writel(ISPPRV_AVE_EVENDIST_2 <<
+                              ISPPRV_AVE_EVENDIST_SHIFT |
+                              ISPPRV_AVE_ODDDIST_2 <<
+                              ISPPRV_AVE_ODDDIST_SHIFT |
+                              ispprev_obj.fmtavg,
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_AVE);
+
+       if (ispprev_obj.prev_outfmt == PREVIEW_MEM) {
+               prevsdroff = ispprev_obj.prevout_w * 2;
+               if ((prevsdroff & ISP_32B_BOUNDARY_OFFSET) != prevsdroff) {
+                       DPRINTK_ISPPREV("ISP_WARN: Preview output buffer line"
+                                       " size is truncated"
+                                       " to 32byte boundary\n");
+                       prevsdroff &= ISP_32B_BOUNDARY_BUF ;
+               }
+               isppreview_config_outlineoffset(prevsdroff);
+       }
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_config_size);
+
+/**
+ * isppreview_config_inlineoffset - Configures the Read address line offset.
+ * @offset: Line Offset for the input image.
+ **/
+int isppreview_config_inlineoffset(u32 offset)
+{
+       if ((offset & ISP_32B_BOUNDARY_OFFSET) == offset) {
+               isp_reg_writel(offset & 0xffff,
+                              OMAP3_ISP_IOMEM_PREV, ISPPRV_RADR_OFFSET);
+       } else {
+               printk(KERN_ERR "ISP_ERR : Offset should be in 32 byte "
+                      "boundary\n");
+               return -EINVAL;
+       }
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_config_inlineoffset);
+
+/**
+ * isppreview_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.
+ **/
+int isppreview_set_inaddr(u32 addr)
+{
+       if ((addr & ISP_32B_BOUNDARY_BUF) == addr)
+               isp_reg_writel(addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_RSDR_ADDR);
+       else {
+               printk(KERN_ERR "ISP_ERR: Address should be in 32 byte "
+                      "boundary\n");
+               return -EINVAL;
+       }
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_set_inaddr);
+
+/**
+ * isppreview_config_outlineoffset - Configures the Write address line offset.
+ * @offset: Line Offset for the preview output.
+ **/
+int isppreview_config_outlineoffset(u32 offset)
+{
+       if ((offset & ISP_32B_BOUNDARY_OFFSET) != offset) {
+               printk(KERN_ERR "ISP_ERR : Offset should be in 32 byte "
+                      "boundary\n");
+               return -EINVAL;
+       }
+       isp_reg_writel(offset & 0xffff, OMAP3_ISP_IOMEM_PREV,
+                      ISPPRV_WADD_OFFSET);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_config_outlineoffset);
+
+/**
+ * isppreview_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.
+ **/
+int isppreview_set_outaddr(u32 addr)
+{
+       if ((addr & ISP_32B_BOUNDARY_BUF) != addr) {
+               printk(KERN_ERR "ISP_ERR: Address should be in 32 byte "
+                      "boundary\n");
+               return -EINVAL;
+       }
+       isp_reg_writel(addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_WSDR_ADDR);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_set_outaddr);
+
+/**
+ * isppreview_config_darklineoffset - Sets the Dark frame address line offset.
+ * @offset: Line Offset for the Darkframe.
+ **/
+int isppreview_config_darklineoffset(u32 offset)
+{
+       if ((offset & ISP_32B_BOUNDARY_OFFSET) != offset) {
+               printk(KERN_ERR "ISP_ERR : Offset should be in 32 byte "
+                      "boundary\n");
+               return -EINVAL;
+       }
+       isp_reg_writel(offset & 0xffff, OMAP3_ISP_IOMEM_PREV,
+                      ISPPRV_DRKF_OFFSET);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_config_darklineoffset);
+
+/**
+ * isppreview_set_darkaddr - Sets the memory address to store Dark frame.
+ * @addr: 32bit memory address aligned on 32 bit boundary.
+ **/
+int isppreview_set_darkaddr(u32 addr)
+{
+       if ((addr & ISP_32B_BOUNDARY_BUF) != addr) {
+               printk(KERN_ERR "ISP_ERR : Address should be in 32 byte "
+                      "boundary\n");
+               return -EINVAL;
+       }
+       isp_reg_writel(addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_DSDR_ADDR);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(isppreview_set_darkaddr);
+
+void __isppreview_enable(int enable)
+{
+       if (enable)
+               isp_reg_or(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_EN);
+       else
+               isp_reg_and(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ~ISPPRV_PCR_EN);
+}
+
+/**
+ * isppreview_enable - Enables the Preview module.
+ * @enable: 1 - Enables the preview module.
+ *
+ * Client should configure all the sub modules in Preview before this.
+ **/
+void isppreview_enable(int enable)
+{
+       __isppreview_enable(enable);
+       ispprev_obj.pm_state = enable;
+}
+EXPORT_SYMBOL_GPL(isppreview_enable);
+
+/**
+ * isppreview_suspend - Suspend Preview module.
+ **/
+void isppreview_suspend(void)
+{
+       if (ispprev_obj.pm_state)
+               __isppreview_enable(0);
+}
+EXPORT_SYMBOL_GPL(isppreview_suspend);
+
+/**
+ * isppreview_resume - Resume Preview module.
+ **/
+void isppreview_resume(void)
+{
+       if (ispprev_obj.pm_state)
+               __isppreview_enable(1);
+}
+EXPORT_SYMBOL_GPL(isppreview_resume);
+
+
+/**
+ * isppreview_busy - Gets busy state of preview module.
+ **/
+int isppreview_busy(void)
+{
+       return isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR) &
+               ISPPRV_PCR_BUSY;
+}
+EXPORT_SYMBOL_GPL(isppreview_busy);
+
+/**
+ * isppreview_get_config - Gets parameters of preview module.
+ **/
+struct prev_params *isppreview_get_config(void)
+{
+       return prev_config_params;
+}
+EXPORT_SYMBOL_GPL(isppreview_get_config);
+
+/**
+ * isppreview_save_context - Saves the values of the preview module registers.
+ **/
+void isppreview_save_context(void)
+{
+       DPRINTK_ISPPREV("Saving context\n");
+       isp_save_context(ispprev_reg_list);
+}
+EXPORT_SYMBOL_GPL(isppreview_save_context);
+
+/**
+ * isppreview_restore_context - Restores the values of preview module registers
+ **/
+void isppreview_restore_context(void)
+{
+       DPRINTK_ISPPREV("Restoring context\n");
+       isp_restore_context(ispprev_reg_list);
+}
+EXPORT_SYMBOL_GPL(isppreview_restore_context);
+
+/**
+ * isppreview_print_status - Prints the values of the Preview Module registers.
+ *
+ * Also prints other debug information stored in the preview moduel.
+ **/
+void isppreview_print_status(void)
+{
+       DPRINTK_ISPPREV("Module in use =%d\n", ispprev_obj.prev_inuse);
+       DPRINTK_ISPPREV("Preview Input format =%d, Output Format =%d\n",
+                       ispprev_obj.prev_inpfmt,
+                       ispprev_obj.prev_outfmt);
+       DPRINTK_ISPPREV("Accepted Preview Input (width = %d,Height = %d)\n",
+                       ispprev_obj.previn_w,
+                       ispprev_obj.previn_h);
+       DPRINTK_ISPPREV("Accepted Preview Output (width = %d,Height = %d)\n",
+                       ispprev_obj.prevout_w,
+                       ispprev_obj.prevout_h);
+       DPRINTK_ISPPREV("###ISP_CTRL in preview =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_MAIN, ISP_CTRL));
+       DPRINTK_ISPPREV("###ISP_IRQ0ENABLE in preview =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0ENABLE));
+       DPRINTK_ISPPREV("###ISP_IRQ0STATUS in preview =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS));
+       DPRINTK_ISPPREV("###PRV PCR =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR));
+       DPRINTK_ISPPREV("###PRV HORZ_INFO =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_HORZ_INFO));
+       DPRINTK_ISPPREV("###PRV VERT_INFO =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_VERT_INFO));
+       DPRINTK_ISPPREV("###PRV WSDR_ADDR =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_WSDR_ADDR));
+       DPRINTK_ISPPREV("###PRV WADD_OFFSET =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV,
+                                     ISPPRV_WADD_OFFSET));
+       DPRINTK_ISPPREV("###PRV AVE =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_AVE));
+       DPRINTK_ISPPREV("###PRV HMED =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_HMED));
+       DPRINTK_ISPPREV("###PRV NF =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_NF));
+       DPRINTK_ISPPREV("###PRV WB_DGAIN =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_WB_DGAIN));
+       DPRINTK_ISPPREV("###PRV WBGAIN =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_WBGAIN));
+       DPRINTK_ISPPREV("###PRV WBSEL =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_WBSEL));
+       DPRINTK_ISPPREV("###PRV CFA =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CFA));
+       DPRINTK_ISPPREV("###PRV BLKADJOFF =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_BLKADJOFF));
+       DPRINTK_ISPPREV("###PRV RGB_MAT1 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT1));
+       DPRINTK_ISPPREV("###PRV RGB_MAT2 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT2));
+       DPRINTK_ISPPREV("###PRV RGB_MAT3 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT3));
+       DPRINTK_ISPPREV("###PRV RGB_MAT4 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT4));
+       DPRINTK_ISPPREV("###PRV RGB_MAT5 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT5));
+       DPRINTK_ISPPREV("###PRV RGB_OFF1 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF1));
+       DPRINTK_ISPPREV("###PRV RGB_OFF2 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF2));
+       DPRINTK_ISPPREV("###PRV CSC0 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC0));
+       DPRINTK_ISPPREV("###PRV CSC1 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC1));
+       DPRINTK_ISPPREV("###PRV CSC2 =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC2));
+       DPRINTK_ISPPREV("###PRV CSC_OFFSET =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC_OFFSET));
+       DPRINTK_ISPPREV("###PRV CNT_BRT =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT));
+       DPRINTK_ISPPREV("###PRV CSUP =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_CSUP));
+       DPRINTK_ISPPREV("###PRV SETUP_YC =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_PREV, ISPPRV_SETUP_YC));
+}
+EXPORT_SYMBOL_GPL(isppreview_print_status);
+
+/**
+ * isp_preview_init - Module Initialization.
+ **/
+int __init isp_preview_init(void)
+{
+       int i = 0;
+
+       prev_config_params = kmalloc(sizeof(*prev_config_params), GFP_KERNEL);
+       if (!prev_config_params) {
+               printk(KERN_ERR "Can't get memory for isp_preview params!\n");
+               return -ENOMEM;
+       }
+       params = prev_config_params;
+
+       ispprev_obj.prev_inuse = 0;
+       mutex_init(&ispprev_obj.ispprev_mutex);
+
+       /* Init values */
+       ispprev_obj.sph = 2;
+       ispprev_obj.slv = 0;
+       ispprev_obj.color = V4L2_COLORFX_NONE;
+       ispprev_obj.contrast = ISPPRV_CONTRAST_DEF;
+       params->contrast = ISPPRV_CONTRAST_DEF;
+       ispprev_obj.brightness = ISPPRV_BRIGHT_DEF;
+       params->brightness = ISPPRV_BRIGHT_DEF;
+       params->average = NO_AVE;
+       params->lens_shading_shift = 0;
+       params->pix_fmt = YCPOS_YCrYCb;
+       params->cfa.cfafmt = CFAFMT_BAYER;
+       params->cfa.cfa_table = cfa_coef_table;
+       params->cfa.cfa_gradthrs_horz = FLR_CFA_GRADTHRS_HORZ;
+       params->cfa.cfa_gradthrs_vert = FLR_CFA_GRADTHRS_VERT;
+       params->csup.gain = FLR_CSUP_GAIN;
+       params->csup.thres = FLR_CSUP_THRES;
+       params->csup.hypf_en = 0;
+       params->ytable = luma_enhance_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 < 4; i++)
+               params->dcor.detect_correct[i] = 0xE;
+       params->gtable.bluetable = bluegamma_table;
+       params->gtable.greentable = greengamma_table;
+       params->gtable.redtable = redgamma_table;
+       params->wbal.dgain = FLR_WBAL_DGAIN;
+       if (omap_rev() > OMAP3430_REV_ES1_0) {
+               params->wbal.coef0 = FLR_WBAL_COEF0_ES1;
+               params->wbal.coef1 = FLR_WBAL_COEF1_ES1;
+               params->wbal.coef2 = FLR_WBAL_COEF2_ES1;
+               params->wbal.coef3 = FLR_WBAL_COEF3_ES1;
+       } else {
+               params->wbal.coef0 = FLR_WBAL_COEF0;
+               params->wbal.coef1 = FLR_WBAL_COEF1;
+               params->wbal.coef2 = FLR_WBAL_COEF2;
+               params->wbal.coef3 = FLR_WBAL_COEF3;
+       }
+       params->blk_adj.red = FLR_BLKADJ_RED;
+       params->blk_adj.green = FLR_BLKADJ_GREEN;
+       params->blk_adj.blue = FLR_BLKADJ_BLUE;
+       params->rgb2rgb = flr_rgb2rgb;
+       params->rgb2ycbcr = flr_prev_csc[ispprev_obj.color];
+
+       params->features = PREV_CFA | PREV_DEFECT_COR | PREV_NOISE_FILTER;
+       params->features &= ~(PREV_AVERAGER | PREV_INVERSE_ALAW |
+                             PREV_HORZ_MEDIAN_FILTER |
+                             PREV_GAMMA_BYPASS |
+                             PREV_DARK_FRAME_SUBTRACT |
+                             PREV_LENS_SHADING |
+                             PREV_DARK_FRAME_CAPTURE |
+                             PREV_CHROMA_SUPPRESS |
+                             PREV_LUMA_ENHANCE);
+       return 0;
+}
+
+/**
+ * isp_preview_cleanup - Module Cleanup.
+ **/
+void isp_preview_cleanup(void)
+{
+       kfree(prev_config_params);
+}
diff --git a/drivers/media/video/isp/isppreview.h b/drivers/media/video/isp/isppreview.h
new file mode 100644
index 0000000..e88c329
--- /dev/null
+++ b/drivers/media/video/isp/isppreview.h
@@ -0,0 +1,354 @@
+/*
+ * isppreview.h
+ *
+ * Driver header file for Preview module in TI's OMAP3 Camera ISP
+ *
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contributors:
+ *     Senthilvadivu Guruswamy <svadivu@ti.com>
+ *     Pallavi Kulkarni <p-kulkarni@ti.com>
+ *     Sergio Aguirre <saaguirre@ti.com>
+ *
+ * This package 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 PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef OMAP_ISP_PREVIEW_H
+#define OMAP_ISP_PREVIEW_H
+
+#include <mach/isp_user.h>
+/* Isp query control structure */
+
+#define ISPPRV_BRIGHT_STEP             0x1
+#define ISPPRV_BRIGHT_DEF              0x0
+#define ISPPRV_BRIGHT_LOW              0x0
+#define ISPPRV_BRIGHT_HIGH             0xF
+#define ISPPRV_BRIGHT_UNITS            0x7
+
+#define ISPPRV_CONTRAST_STEP           0x1
+#define ISPPRV_CONTRAST_DEF            0x4
+#define ISPPRV_CONTRAST_LOW            0x0
+#define ISPPRV_CONTRAST_HIGH           0xF
+#define ISPPRV_CONTRAST_UNITS          0x4
+
+#define NO_AVE                         0x0
+#define AVE_2_PIX                      0x1
+#define AVE_4_PIX                      0x2
+#define AVE_8_PIX                      0x3
+#define AVE_ODD_PIXEL_DIST             (1 << 4) /* For Bayer Sensors */
+#define AVE_EVEN_PIXEL_DIST            (1 << 2)
+
+#define WB_GAIN_MAX                    4
+
+/* Features list */
+#define PREV_AVERAGER                  (1 << 0)
+#define PREV_INVERSE_ALAW              (1 << 1)
+#define PREV_HORZ_MEDIAN_FILTER                (1 << 2)
+#define PREV_NOISE_FILTER              (1 << 3)
+#define PREV_CFA                       (1 << 4)
+#define PREV_GAMMA_BYPASS              (1 << 5)
+#define PREV_LUMA_ENHANCE              (1 << 6)
+#define PREV_CHROMA_SUPPRESS           (1 << 7)
+#define PREV_DARK_FRAME_SUBTRACT       (1 << 8)
+#define PREV_LENS_SHADING              (1 << 9)
+#define PREV_DARK_FRAME_CAPTURE                (1 << 10)
+#define PREV_DEFECT_COR                        (1 << 11)
+
+
+#define ISP_NF_TABLE_SIZE              (1 << 10)
+
+#define ISP_GAMMA_TABLE_SIZE           (1 << 10)
+
+/* Table addresses */
+#define ISPPRV_TBL_ADDR_RED_G_START  0x00
+#define ISPPRV_TBL_ADDR_BLUE_G_START  0x800
+#define ISPPRV_TBL_ADDR_GREEN_G_START  0x400
+
+/*
+ *Enumeration Constants for input and output format
+ */
+enum preview_input {
+       PRV_RAW_CCDC,
+       PRV_RAW_MEM,
+       PRV_RGBBAYERCFA,
+       PRV_COMPCFA,
+       PRV_CCDC_DRKF,
+       PRV_OTHERS
+};
+enum preview_output {
+       PREVIEW_RSZ,
+       PREVIEW_MEM
+};
+/*
+ * Configure byte layout of YUV image
+ */
+enum preview_ycpos_mode {
+       YCPOS_YCrYCb = 0,
+       YCPOS_YCbYCr = 1,
+       YCPOS_CbYCrY = 2,
+       YCPOS_CrYCbY = 3
+};
+
+/**
+ * struct ispprev_gtable - Structure for Gamma Correction.
+ * @redtable: Pointer to the red gamma table.
+ * @greentable: Pointer to the green gamma table.
+ * @bluetable: Pointer to the blue gamma table.
+ */
+struct ispprev_gtable {
+       u32 *redtable;
+       u32 *greentable;
+       u32 *bluetable;
+};
+
+/**
+ * struct prev_white_balance - Structure for White Balance 2.
+ * @wb_dgain: White balance common gain.
+ * @wb_gain: Individual color gains.
+ * @wb_coefmatrix: Coefficient matrix
+ */
+struct prev_white_balance {
+       u16 wb_dgain; /* white balance common gain */
+       u8 wb_gain[WB_GAIN_MAX]; /* individual color gains */
+       u8 wb_coefmatrix[WB_GAIN_MAX][WB_GAIN_MAX];
+};
+
+/**
+ * struct prev_size_params - Structure for size parameters.
+ * @hstart: Starting pixel.
+ * @vstart: Starting line.
+ * @hsize: Width of input image.
+ * @vsize: Height of input image.
+ * @pixsize: Pixel size of the image in terms of bits.
+ * @in_pitch: Line offset of input image.
+ * @out_pitch: Line offset of output image.
+ */
+struct prev_size_params {
+       unsigned int hstart;
+       unsigned int vstart;
+       unsigned int hsize;
+       unsigned int vsize;
+       unsigned char pixsize;
+       unsigned short in_pitch;
+       unsigned short out_pitch;
+};
+
+/**
+ * struct prev_rgb2ycbcr_coeffs - Structure RGB2YCbCr parameters.
+ * @coeff: Color conversion gains in 3x3 matrix.
+ * @offset: Color conversion offsets.
+ */
+struct prev_rgb2ycbcr_coeffs {
+       short coeff[RGB_MAX][RGB_MAX];
+       short offset[RGB_MAX];
+};
+
+/**
+ * struct prev_darkfrm_params - Structure for Dark frame suppression.
+ * @addr: Memory start address.
+ * @offset: Line offset.
+ */
+struct prev_darkfrm_params {
+       u32 addr;
+        u32 offset;
+ };
+
+/**
+ * struct prev_params - Structure for all configuration
+ * @features: Set of features enabled.
+ * @pix_fmt: Output pixel format.
+ * @cfa: CFA coefficients.
+ * @csup: Chroma suppression coefficients.
+ * @ytable: Pointer to Luma enhancement coefficients.
+ * @nf: Noise filter coefficients.
+ * @dcor: Noise filter coefficients.
+ * @gtable: Gamma coefficients.
+ * @wbal: White Balance parameters.
+ * @blk_adj: Black adjustment parameters.
+ * @rgb2rgb: RGB blending parameters.
+ * @rgb2ycbcr: RGB to ycbcr parameters.
+ * @hmf_params: Horizontal median filter.
+ * @size_params: Size parameters.
+ * @drkf_params: Darkframe parameters.
+ * @lens_shading_shift:
+ * @average: Downsampling rate for averager.
+ * @contrast: Contrast.
+ * @brightness: Brightness.
+ */
+struct prev_params {
+       u16 features;
+       enum preview_ycpos_mode pix_fmt;
+       struct ispprev_cfa cfa;
+       struct ispprev_csup csup;
+       u32 *ytable;
+       struct ispprev_nf nf;
+       struct ispprev_dcor dcor;
+       struct ispprev_gtable gtable;
+       struct ispprev_wbal wbal;
+       struct ispprev_blkadj blk_adj;
+       struct ispprev_rgbtorgb rgb2rgb;
+       struct ispprev_csc rgb2ycbcr;
+       struct ispprev_hmed hmf_params;
+       struct prev_size_params size_params;
+       struct prev_darkfrm_params drkf_params;
+       u8 lens_shading_shift;
+       u8 average;
+       u8 contrast;
+       u8 brightness;
+};
+
+/**
+ * struct isptables_update - Structure for Table Configuration.
+ * @update: Specifies which tables should be updated.
+ * @flag: Specifies which tables should be enabled.
+ * @prev_nf: Pointer to structure for Noise Filter
+ * @lsc: Pointer to LSC gain table. (currently not used)
+ * @red_gamma: Pointer to red gamma correction table.
+ * @green_gamma: Pointer to green gamma correction table.
+ * @blue_gamma: Pointer to blue gamma correction table.
+ */
+struct isptables_update {
+       u16 update;
+       u16 flag;
+       struct ispprev_nf *prev_nf;
+       u32 *lsc;
+       u32 *red_gamma;
+       u32 *green_gamma;
+       u32 *blue_gamma;
+};
+
+void isppreview_config_shadow_registers(void);
+
+int isppreview_request(void);
+
+int isppreview_free(void);
+
+int isppreview_config_datapath(enum preview_input input,
+                              enum preview_output output);
+
+void isppreview_config_ycpos(enum preview_ycpos_mode mode);
+
+void isppreview_config_averager(u8 average);
+
+void isppreview_enable_invalaw(u8 enable);
+
+void isppreview_enable_drkframe(u8 enable);
+
+void isppreview_enable_shadcomp(u8 enable);
+
+void isppreview_config_drkf_shadcomp(u8 scomp_shtval);
+
+void isppreview_enable_gammabypass(u8 enable);
+
+void isppreview_enable_hmed(u8 enable);
+
+void isppreview_config_hmed(struct ispprev_hmed);
+
+void isppreview_enable_noisefilter(u8 enable);
+
+void isppreview_config_noisefilter(struct ispprev_nf prev_nf);
+
+void isppreview_enable_dcor(u8 enable);
+
+void isppreview_config_dcor(struct ispprev_dcor prev_dcor);
+
+
+void isppreview_config_cfa(struct ispprev_cfa);
+
+void isppreview_config_gammacorrn(struct ispprev_gtable);
+
+void isppreview_config_chroma_suppression(struct ispprev_csup csup);
+
+void isppreview_enable_cfa(u8 enable);
+
+void isppreview_config_luma_enhancement(u32 *ytable);
+
+void isppreview_enable_luma_enhancement(u8 enable);
+
+void isppreview_enable_chroma_suppression(u8 enable);
+
+void isppreview_config_whitebalance(struct ispprev_wbal);
+
+void isppreview_config_blkadj(struct ispprev_blkadj);
+
+void isppreview_config_rgb_blending(struct ispprev_rgbtorgb);
+
+void isppreview_config_rgb_to_ycbcr(struct ispprev_csc);
+
+void isppreview_update_contrast(u8 *contrast);
+
+void isppreview_query_contrast(u8 *contrast);
+
+void isppreview_config_contrast(u8 contrast);
+
+void isppreview_get_contrast_range(u8 *min_contrast, u8 *max_contrast);
+
+void isppreview_update_brightness(u8 *brightness);
+
+void isppreview_config_brightness(u8 brightness);
+
+void isppreview_get_brightness_range(u8 *min_brightness, u8 *max_brightness);
+
+void isppreview_set_color(u8 *mode);
+
+void isppreview_get_color(u8 *mode);
+
+void isppreview_query_brightness(u8 *brightness);
+
+void isppreview_config_yc_range(struct ispprev_yclimit yclimit);
+
+int isppreview_try_size(u32 input_w, u32 input_h, u32 *output_w,
+                       u32 *output_h);
+
+int isppreview_config_size(u32 input_w, u32 input_h, u32 output_w,
+                          u32 output_h);
+
+int isppreview_config_inlineoffset(u32 offset);
+
+int isppreview_set_inaddr(u32 addr);
+
+int isppreview_config_outlineoffset(u32 offset);
+
+int isppreview_set_outaddr(u32 addr);
+
+int isppreview_config_darklineoffset(u32 offset);
+
+int isppreview_set_darkaddr(u32 addr);
+
+void isppreview_enable(int enable);
+
+void isppreview_suspend(void);
+
+void isppreview_resume(void);
+
+int isppreview_busy(void);
+
+struct prev_params *isppreview_get_config(void);
+
+void isppreview_print_status(void);
+
+#ifndef CONFIG_ARCH_OMAP3410
+void isppreview_save_context(void);
+#else
+static inline void isppreview_save_context(void) {}
+#endif
+
+#ifndef CONFIG_ARCH_OMAP3410
+void isppreview_restore_context(void);
+#else
+static inline void isppreview_restore_context(void) {}
+#endif
+
+int omap34xx_isp_preview_config(void *userspace_add);
+
+int omap34xx_isp_tables_update(struct isptables_update *isptables_struct);
+
+void isppreview_set_skip(u32 h, u32 v);
+
+#endif/* OMAP_ISP_PREVIEW_H */
diff --git a/drivers/media/video/isp/ispresizer.c b/drivers/media/video/isp/ispresizer.c
new file mode 100644
index 0000000..f78ddb3
--- /dev/null
+++ b/drivers/media/video/isp/ispresizer.c
@@ -0,0 +1,928 @@
+/*
+ * ispresizer.c
+ *
+ * Driver Library for Resizer module in TI's OMAP3 Camera ISP
+ *
+ * Copyright (C)2009 Texas Instruments, Inc.
+ *
+ * Contributors:
+ *     Sameer Venkatraman <sameerv@ti.com>
+ *     Mohit Jalori
+ *     Sergio Aguirre <saaguirre@ti.com>
+ *
+ * This package 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 PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <linux/module.h>
+
+#include "isp.h"
+#include "ispreg.h"
+#include "ispresizer.h"
+
+/* Default configuration of resizer,filter coefficients,yenh for camera isp */
+static struct isprsz_yenh ispreszdefaultyenh = {0, 0, 0, 0};
+static struct isprsz_coef ispreszdefcoef = {
+       {
+               0x0027, 0x00B2, 0x00B2, 0x0027,
+               0x0027, 0x00B2, 0x0027, 0x00B2,
+               0x0027, 0x00B2, 0x0027, 0x00B2,
+               0x0027, 0x00B2, 0x0027, 0x00B2,
+               0x0027, 0x00B2, 0x0027, 0x00B2,
+               0x0027, 0x00B2, 0x0027, 0x00B2,
+               0x0027, 0x00B2, 0x0027, 0x00B2,
+               0x0027, 0x00B2, 0x0027, 0x00B2,
+       },
+       {
+               0x0000, 0x0100, 0x0000, 0x0000,
+               0x03FA, 0x00F6, 0x0010, 0x0000,
+               0x03F9, 0x00DB, 0x002C, 0x0000,
+               0x03FB, 0x00B3, 0x0053, 0x03FF,
+               0x03FD, 0x0082, 0x0084, 0x03FD,
+               0x03FF, 0x0053, 0x00B3, 0x03FB,
+               0x0000, 0x002C, 0x00DB, 0x03F9,
+               0x0000, 0x0010, 0x00F6, 0x03FA
+       },
+       {
+               0x0004, 0x0023, 0x0023, 0x005A,
+               0x005A, 0x0058, 0x0058, 0x0004,
+               0x0023, 0x0023, 0x005A, 0x005A,
+               0x0058, 0x0058, 0x0004, 0x0023,
+               0x0023, 0x005A, 0x005A, 0x0058,
+               0x0058, 0x0004, 0x0023, 0x0023,
+               0x005A, 0x005A, 0x0058, 0x0058
+       },
+       {
+               0x0004, 0x0023, 0x005A, 0x0058,
+               0x0023, 0x0004, 0x0000, 0x0002,
+               0x0018, 0x004d, 0x0060, 0x0031,
+               0x0008, 0x0000, 0x0001, 0x000f,
+               0x003f, 0x0062, 0x003f, 0x000f,
+               0x0001, 0x0000, 0x0008, 0x0031,
+               0x0060, 0x004d, 0x0018, 0x0002
+       }
+};
+
+/**
+ * struct isp_res - Structure for the resizer module to store its information.
+ * @res_inuse: Indicates if resizer module has been reserved. 1 - Reserved,
+ *             0 - Freed.
+ * @h_startphase: Horizontal starting phase.
+ * @v_startphase: Vertical starting phase.
+ * @h_resz: Horizontal resizing value.
+ * @v_resz: Vertical resizing value.
+ * @outputwidth: Output Image Width in pixels.
+ * @outputheight: Output Image Height in pixels.
+ * @inputwidth: Input Image Width in pixels.
+ * @inputheight: Input Image Height in pixels.
+ * @algo: Algorithm select. 0 - Disable, 1 - [-1 2 -1]/2 high-pass filter,
+ *        2 - [-1 -2 6 -2 -1]/4 high-pass filter.
+ * @ipht_crop: Vertical start line for cropping.
+ * @ipwd_crop: Horizontal start pixel for cropping.
+ * @cropwidth: Crop Width.
+ * @cropheight: Crop Height.
+ * @resinput: Resizer input.
+ * @coeflist: Register configuration for Resizer.
+ * @ispres_mutex: Mutex for isp resizer.
+ */
+static struct isp_res {
+       int pm_state;
+       u8 res_inuse;
+       u8 h_startphase;
+       u8 v_startphase;
+       u16 h_resz;
+       u16 v_resz;
+       u32 outputwidth;
+       u32 outputheight;
+       u32 inputwidth;
+       u32 inputheight;
+       u8 algo;
+       u32 ipht_crop;
+       u32 ipwd_crop;
+       u32 cropwidth;
+       u32 cropheight;
+       dma_addr_t tmp_buf;
+       enum ispresizer_input resinput;
+       struct isprsz_coef coeflist;
+       struct mutex ispres_mutex; /* For checking/modifying res_inuse */
+} ispres_obj;
+
+/* Structure for saving/restoring resizer module registers */
+static struct isp_reg isprsz_reg_list[] = {
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_OUT_SIZE, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_START, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_SIZE, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INOFF, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTADD, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTOFF, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT10, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT32, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT54, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT76, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT98, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT1110, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT1312, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT1514, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT1716, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT1918, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT2120, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT2322, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT2524, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT2726, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT2928, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_HFILT3130, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT10, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT32, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT54, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT76, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT98, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT1110, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT1312, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT1514, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT1716, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT1918, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT2120, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT2322, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT2524, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT2726, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT2928, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_VFILT3130, 0x0000},
+       {OMAP3_ISP_IOMEM_RESZ, ISPRSZ_YENH, 0x0000},
+       {0, ISP_TOK_TERM, 0x0000}
+};
+
+/**
+ * ispresizer_config_shadow_registers - Configure shadow registers.
+ **/
+void ispresizer_config_shadow_registers()
+{
+       return;
+}
+EXPORT_SYMBOL(ispresizer_config_shadow_registers);
+
+/**
+ * ispresizer_trycrop - Validate crop dimensions.
+ * @left: Left distance to start position of crop.
+ * @top: Top distance to start position of crop.
+ * @width: Width of input image.
+ * @height: Height of input image.
+ * @ow: Width of output image.
+ * @oh: Height of output image.
+ **/
+void ispresizer_trycrop(u32 left, u32 top, u32 width, u32 height, u32 ow,
+                       u32 oh)
+{
+       ispres_obj.cropwidth = width + 6;
+       ispres_obj.cropheight = height + 6;
+       ispresizer_try_size(&ispres_obj.cropwidth, &ispres_obj.cropheight, &ow,
+                           &oh);
+       ispres_obj.ipht_crop = top;
+       ispres_obj.ipwd_crop = left;
+}
+EXPORT_SYMBOL(ispresizer_trycrop);
+
+/**
+ * ispresizer_applycrop - Apply crop to input image.
+ **/
+void ispresizer_applycrop(void)
+{
+       ispresizer_config_size(ispres_obj.cropwidth, ispres_obj.cropheight,
+                              ispres_obj.outputwidth,
+                              ispres_obj.outputheight);
+       return;
+}
+EXPORT_SYMBOL(ispresizer_applycrop);
+
+/**
+ * ispresizer_request - Reserves the Resizer module.
+ *
+ * Allows only one user at a time.
+ *
+ * Returns 0 if successful, or -EBUSY if resizer module was already requested.
+ **/
+int ispresizer_request()
+{
+       mutex_lock(&ispres_obj.ispres_mutex);
+       if (!ispres_obj.res_inuse) {
+               ispres_obj.res_inuse = 1;
+               mutex_unlock(&ispres_obj.ispres_mutex);
+               isp_reg_writel(isp_reg_readl(OMAP3_ISP_IOMEM_MAIN, ISP_CTRL) |
+                              ISPCTRL_SBL_WR0_RAM_EN |
+                              ISPCTRL_RSZ_CLK_EN,
+                              OMAP3_ISP_IOMEM_MAIN, ISP_CTRL);
+               return 0;
+       } else {
+               mutex_unlock(&ispres_obj.ispres_mutex);
+               printk(KERN_ERR "ISP_ERR : Resizer Module Busy\n");
+               return -EBUSY;
+       }
+}
+EXPORT_SYMBOL(ispresizer_request);
+
+/**
+ * ispresizer_free - Makes Resizer module free.
+ *
+ * Returns 0 if successful, or -EINVAL if resizer module was already freed.
+ **/
+int ispresizer_free()
+{
+       mutex_lock(&ispres_obj.ispres_mutex);
+       if (ispres_obj.res_inuse) {
+               ispres_obj.res_inuse = 0;
+               mutex_unlock(&ispres_obj.ispres_mutex);
+               isp_reg_and(OMAP3_ISP_IOMEM_MAIN, ISP_CTRL,
+                           ~(ISPCTRL_RSZ_CLK_EN | ISPCTRL_SBL_WR0_RAM_EN));
+               return 0;
+       } else {
+               mutex_unlock(&ispres_obj.ispres_mutex);
+               DPRINTK_ISPRESZ("ISP_ERR : Resizer Module already freed\n");
+               return -EINVAL;
+       }
+}
+EXPORT_SYMBOL(ispresizer_free);
+
+/**
+ * ispresizer_config_datapath - Specifies which input to use in resizer module
+ * @input: Indicates the module that gives the image to resizer.
+ *
+ * Sets up the default resizer configuration according to the arguments.
+ *
+ * Returns 0 if successful, or -EINVAL if an unsupported input was requested.
+ **/
+int ispresizer_config_datapath(enum ispresizer_input input)
+{
+       u32 cnt = 0;
+       DPRINTK_ISPRESZ("ispresizer_config_datapath()+\n");
+       ispres_obj.resinput = input;
+       switch (input) {
+       case RSZ_OTFLY_YUV:
+               cnt &= ~ISPRSZ_CNT_INPTYP;
+               cnt &= ~ISPRSZ_CNT_INPSRC;
+               ispresizer_set_inaddr(0);
+               ispresizer_config_inlineoffset(0);
+               break;
+       case RSZ_MEM_YUV:
+               cnt |= ISPRSZ_CNT_INPSRC;
+               cnt &= ~ISPRSZ_CNT_INPTYP;
+               break;
+       case RSZ_MEM_COL8:
+               cnt |= ISPRSZ_CNT_INPSRC;
+               cnt |= ISPRSZ_CNT_INPTYP;
+               break;
+       default:
+               printk(KERN_ERR "ISP_ERR : Wrong Input\n");
+               return -EINVAL;
+       }
+       isp_reg_or(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, cnt);
+       ispresizer_config_ycpos(0);
+       ispresizer_config_filter_coef(&ispreszdefcoef);
+       ispresizer_enable_cbilin(0);
+       ispresizer_config_luma_enhance(&ispreszdefaultyenh);
+       DPRINTK_ISPRESZ("ispresizer_config_datapath()-\n");
+       return 0;
+}
+EXPORT_SYMBOL(ispresizer_config_datapath);
+
+/**
+ * ispresizer_try_size - Validates input and output images size.
+ * @input_w: input width for the resizer in number of pixels per line
+ * @input_h: input height for the resizer in number of lines
+ * @output_w: output width from the resizer in number of pixels per line
+ *            resizer when writing to memory needs this to be multiple of 16.
+ * @output_h: output height for the resizer in number of lines, must be even.
+ *
+ * Calculates the horizontal and vertical resize ratio, number of pixels to
+ * be cropped in the resizer module and checks the validity of various
+ * parameters. Formula used for calculation is:-
+ *
+ * 8-phase 4-tap mode :-
+ * inputwidth = (32 * sph + (ow - 1) * hrsz + 16) >> 8 + 7
+ * inputheight = (32 * spv + (oh - 1) * vrsz + 16) >> 8 + 4
+ * endpahse for width = ((32 * sph + (ow - 1) * hrsz + 16) >> 5) % 8
+ * endphase for height = ((32 * sph + (oh - 1) * hrsz + 16) >> 5) % 8
+ *
+ * 4-phase 7-tap mode :-
+ * inputwidth = (64 * sph + (ow - 1) * hrsz + 32) >> 8 + 7
+ * inputheight = (64 * spv + (oh - 1) * vrsz + 32) >> 8 + 7
+ * endpahse for width = ((64 * sph + (ow - 1) * hrsz + 32) >> 6) % 4
+ * endphase for height = ((64 * sph + (oh - 1) * hrsz + 32) >> 6) % 4
+ *
+ * Where:
+ * sph = Start phase horizontal
+ * spv = Start phase vertical
+ * ow = Output width
+ * oh = Output height
+ * hrsz = Horizontal resize value
+ * vrsz = Vertical resize value
+ *
+ * Fills up the output/input widht/height, horizontal/vertical resize ratio,
+ * horizontal/vertical crop variables in the isp_res structure.
+ **/
+int ispresizer_try_size(u32 *input_width, u32 *input_height, u32 *output_w,
+                       u32 *output_h)
+{
+       u32 rsz, rsz_7, rsz_4;
+       u32 sph;
+       u32 input_w, input_h;
+       int max_in_otf, max_out_7tap;
+
+       input_w = *input_width;
+       input_h = *input_height;
+
+       if (input_w < 32 || input_h < 32) {
+               DPRINTK_ISPCCDC("ISP_ERR: RESIZER cannot handle input width"
+                               " less than 32 pixels or height less than"
+                               " 32\n");
+               return -EINVAL;
+       }
+       input_w -= 6;
+       input_h -= 6;
+
+       if (input_h > MAX_IN_HEIGHT)
+               return -EINVAL;
+
+       if (*output_w < 16)
+               *output_w = 16;
+
+       if (*output_h < 2)
+               *output_h = 2;
+
+       if (omap_rev() == OMAP3430_REV_ES1_0) {
+               max_in_otf = MAX_IN_WIDTH_ONTHEFLY_MODE;
+               max_out_7tap = MAX_7TAP_VRSZ_OUTWIDTH;
+       } else {
+               max_in_otf = MAX_IN_WIDTH_ONTHEFLY_MODE_ES2;
+               max_out_7tap = MAX_7TAP_VRSZ_OUTWIDTH_ES2;
+       }
+
+       if (ispres_obj.resinput == RSZ_OTFLY_YUV) {
+               if (input_w > max_in_otf)
+                       return -EINVAL;
+       } else {
+               if (input_w > MAX_IN_WIDTH_MEMORY_MODE)
+                       return -EINVAL;
+       }
+
+       *output_h &= 0xfffffffe;
+       sph = DEFAULTSTPHASE;
+
+       rsz_7 = ((input_h - 7) * 256) / (*output_h - 1);
+       rsz_4 = ((input_h - 4) * 256) / (*output_h - 1);
+
+       rsz = (input_h * 256) / *output_h;
+
+       if (rsz <= MID_RESIZE_VALUE) {
+               rsz = rsz_4;
+               if (rsz < MINIMUM_RESIZE_VALUE) {
+                       rsz = MINIMUM_RESIZE_VALUE;
+                       *output_h = (((input_h - 4) * 256) / rsz) + 1;
+                       printk(KERN_INFO "%s: using output_h %d instead\n",
+                              __func__, *output_h);
+               }
+       } else {
+               rsz = rsz_7;
+               if (*output_w > max_out_7tap)
+                       *output_w = max_out_7tap;
+               if (rsz > MAXIMUM_RESIZE_VALUE) {
+                       rsz = MAXIMUM_RESIZE_VALUE;
+                       *output_h = (((input_h - 7) * 256) / rsz) + 1;
+                       printk(KERN_INFO "%s: using output_h %d instead\n",
+                              __func__, *output_h);
+               }
+       }
+
+       if (rsz > MID_RESIZE_VALUE) {
+               input_h =
+                       (((64 * sph) + ((*output_h - 1) * rsz) + 32) / 256) + 7;
+       } else {
+               input_h =
+                       (((32 * sph) + ((*output_h - 1) * rsz) + 16) / 256) + 4;
+       }
+
+       ispres_obj.outputheight = *output_h;
+       ispres_obj.v_resz = rsz;
+       ispres_obj.inputheight = input_h;
+       ispres_obj.ipht_crop = DEFAULTSTPIXEL;
+       ispres_obj.v_startphase = sph;
+
+       *output_w &= 0xfffffff0;
+       sph = DEFAULTSTPHASE;
+
+       rsz_7 = ((input_w - 7) * 256) / (*output_w - 1);
+       rsz_4 = ((input_w - 4) * 256) / (*output_w - 1);
+
+       rsz = (input_w * 256) / *output_w;
+       if (rsz > MID_RESIZE_VALUE) {
+               rsz = rsz_7;
+               if (rsz > MAXIMUM_RESIZE_VALUE) {
+                       rsz = MAXIMUM_RESIZE_VALUE;
+                       *output_w = (((input_w - 7) * 256) / rsz) + 1;
+                       *output_w = (*output_w + 0xf) & 0xfffffff0;
+                       printk(KERN_INFO "%s: using output_w %d instead\n",
+                              __func__, *output_w);
+               }
+       } else {
+               rsz = rsz_4;
+               if (rsz < MINIMUM_RESIZE_VALUE) {
+                       rsz = MINIMUM_RESIZE_VALUE;
+                       *output_w = (((input_w - 4) * 256) / rsz) + 1;
+                       *output_w = (*output_w + 0xf) & 0xfffffff0;
+                       printk(KERN_INFO "%s: using output_w %d instead\n",
+                              __func__, *output_w);
+               }
+       }
+
+       /* Recalculate input based on TRM equations */
+       if (rsz > MID_RESIZE_VALUE) {
+               input_w =
+                       (((64 * sph) + ((*output_w - 1) * rsz) + 32) / 256) + 7;
+       } else {
+               input_w =
+                       (((32 * sph) + ((*output_w - 1) * rsz) + 16) / 256) + 7;
+       }
+
+       ispres_obj.outputwidth = *output_w;
+       ispres_obj.h_resz = rsz;
+       ispres_obj.inputwidth = input_w;
+       ispres_obj.ipwd_crop = DEFAULTSTPIXEL;
+       ispres_obj.h_startphase = sph;
+
+       *input_height = input_h;
+       *input_width = input_w;
+       return 0;
+}
+EXPORT_SYMBOL(ispresizer_try_size);
+
+/**
+ * ispresizer_config_size - Configures input and output image size.
+ * @input_w: input width for the resizer in number of pixels per line.
+ * @input_h: input height for the resizer in number of lines.
+ * @output_w: output width from the resizer in number of pixels per line.
+ * @output_h: output height for the resizer in number of lines.
+ *
+ * Configures the appropriate values stored in the isp_res structure in the
+ * resizer registers.
+ *
+ * Returns 0 if successful, or -EINVAL if passed values haven't been verified
+ * with ispresizer_try_size() previously.
+ **/
+int ispresizer_config_size(u32 input_w, u32 input_h, u32 output_w,
+                          u32 output_h)
+{
+       int i, j;
+       u32 res;
+       DPRINTK_ISPRESZ("ispresizer_config_size()+, input_w = %d,input_h ="
+                       " %d, output_w = %d, output_h"
+                       " = %d,hresz = %d,vresz = %d,"
+                       " hcrop = %d, vcrop = %d,"
+                       " hstph = %d, vstph = %d\n",
+                       ispres_obj.inputwidth,
+                       ispres_obj.inputheight,
+                       ispres_obj.outputwidth,
+                       ispres_obj.outputheight,
+                       ispres_obj.h_resz,
+                       ispres_obj.v_resz,
+                       ispres_obj.ipwd_crop,
+                       ispres_obj.ipht_crop,
+                       ispres_obj.h_startphase,
+                       ispres_obj.v_startphase);
+       if ((output_w != ispres_obj.outputwidth)
+           || (output_h != ispres_obj.outputheight)) {
+               printk(KERN_ERR "Output parameters passed do not match the"
+                      " values calculated by the"
+                      " trysize passed w %d, h %d"
+                      " \n", output_w , output_h);
+               return -EINVAL;
+       }
+
+       /* Set Resizer input address and offset adderss */
+       ispresizer_config_inlineoffset(isp_reg_readl(OMAP3_ISP_IOMEM_PREV,
+                                                    ISPPRV_WADD_OFFSET));
+
+       res = isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) &
+               ~(ISPRSZ_CNT_HSTPH_MASK | ISPRSZ_CNT_VSTPH_MASK);
+       isp_reg_writel(res |
+                      (ispres_obj.h_startphase << ISPRSZ_CNT_HSTPH_SHIFT) |
+                      (ispres_obj.v_startphase << ISPRSZ_CNT_VSTPH_SHIFT),
+                      OMAP3_ISP_IOMEM_RESZ,
+                      ISPRSZ_CNT);
+       /* Set start address for cropping */
+       isp_reg_writel(ispres_obj.tmp_buf + 2 *
+                      (ispres_obj.ipht_crop * ispres_obj.inputwidth +
+                       (ispres_obj.ipwd_crop & ~15)),
+                      OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD);
+
+       isp_reg_writel(
+               ((ispres_obj.ipwd_crop & 15) << ISPRSZ_IN_START_HORZ_ST_SHIFT) |
+               (0x00 << ISPRSZ_IN_START_VERT_ST_SHIFT),
+               OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_START);
+
+       isp_reg_writel((0x00 << ISPRSZ_IN_START_HORZ_ST_SHIFT) |
+                      (0x00 << ISPRSZ_IN_START_VERT_ST_SHIFT),
+                      OMAP3_ISP_IOMEM_RESZ,
+                      ISPRSZ_IN_START);
+
+       isp_reg_writel((ispres_obj.inputwidth << ISPRSZ_IN_SIZE_HORZ_SHIFT) |
+                      (ispres_obj.inputheight <<
+                       ISPRSZ_IN_SIZE_VERT_SHIFT),
+                      OMAP3_ISP_IOMEM_RESZ,
+                      ISPRSZ_IN_SIZE);
+       if (!ispres_obj.algo) {
+               isp_reg_writel((output_w << ISPRSZ_OUT_SIZE_HORZ_SHIFT) |
+                              (output_h << ISPRSZ_OUT_SIZE_VERT_SHIFT),
+                              OMAP3_ISP_IOMEM_RESZ,
+                              ISPRSZ_OUT_SIZE);
+       } else {
+               isp_reg_writel(((output_w - 4) << ISPRSZ_OUT_SIZE_HORZ_SHIFT) |
+                              (output_h << ISPRSZ_OUT_SIZE_VERT_SHIFT),
+                              OMAP3_ISP_IOMEM_RESZ,
+                              ISPRSZ_OUT_SIZE);
+       }
+
+       res = isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) &
+               ~(ISPRSZ_CNT_HRSZ_MASK | ISPRSZ_CNT_VRSZ_MASK);
+       isp_reg_writel(res |
+                      ((ispres_obj.h_resz - 1) << ISPRSZ_CNT_HRSZ_SHIFT) |
+                      ((ispres_obj.v_resz - 1) << ISPRSZ_CNT_VRSZ_SHIFT),
+                      OMAP3_ISP_IOMEM_RESZ,
+                      ISPRSZ_CNT);
+       if (ispres_obj.h_resz <= MID_RESIZE_VALUE) {
+               j = 0;
+               for (i = 0; i < 16; i++) {
+                       isp_reg_writel(
+                               (ispres_obj.coeflist.h_filter_coef_4tap[j]
+                                << ISPRSZ_HFILT10_COEF0_SHIFT) |
+                               (ispres_obj.coeflist.h_filter_coef_4tap[j + 1]
+                                << ISPRSZ_HFILT10_COEF1_SHIFT),
+                               OMAP3_ISP_IOMEM_RESZ,
+                               ISPRSZ_HFILT10 + (i * 0x04));
+                       j += 2;
+               }
+       } else {
+               j = 0;
+               for (i = 0; i < 16; i++) {
+                       if ((i + 1) % 4 == 0) {
+                               isp_reg_writel((ispres_obj.coeflist.
+                                               h_filter_coef_7tap[j] <<
+                                               ISPRSZ_HFILT10_COEF0_SHIFT),
+                                              OMAP3_ISP_IOMEM_RESZ,
+                                              ISPRSZ_HFILT10 + (i * 0x04));
+                               j += 1;
+                       } else {
+                               isp_reg_writel((ispres_obj.coeflist.
+                                               h_filter_coef_7tap[j] <<
+                                               ISPRSZ_HFILT10_COEF0_SHIFT) |
+                                              (ispres_obj.coeflist.
+                                               h_filter_coef_7tap[j+1] <<
+                                               ISPRSZ_HFILT10_COEF1_SHIFT),
+                                              OMAP3_ISP_IOMEM_RESZ,
+                                              ISPRSZ_HFILT10 + (i * 0x04));
+                               j += 2;
+                       }
+               }
+       }
+       if (ispres_obj.v_resz <= MID_RESIZE_VALUE) {
+               j = 0;
+               for (i = 0; i < 16; i++) {
+                       isp_reg_writel((ispres_obj.coeflist.
+                                       v_filter_coef_4tap[j] <<
+                                       ISPRSZ_VFILT10_COEF0_SHIFT) |
+                                      (ispres_obj.coeflist.
+                                       v_filter_coef_4tap[j + 1] <<
+                                       ISPRSZ_VFILT10_COEF1_SHIFT),
+                                      OMAP3_ISP_IOMEM_RESZ,
+                                      ISPRSZ_VFILT10 + (i * 0x04));
+                       j += 2;
+               }
+       } else {
+               j = 0;
+               for (i = 0; i < 16; i++) {
+                       if ((i + 1) % 4 == 0) {
+                               isp_reg_writel((ispres_obj.coeflist.
+                                               v_filter_coef_7tap[j] <<
+                                               ISPRSZ_VFILT10_COEF0_SHIFT),
+                                              OMAP3_ISP_IOMEM_RESZ,
+                                              ISPRSZ_VFILT10 + (i * 0x04));
+                               j += 1;
+                       } else {
+                               isp_reg_writel((ispres_obj.coeflist.
+                                               v_filter_coef_7tap[j] <<
+                                               ISPRSZ_VFILT10_COEF0_SHIFT) |
+                                              (ispres_obj.coeflist.
+                                               v_filter_coef_7tap[j+1] <<
+                                               ISPRSZ_VFILT10_COEF1_SHIFT),
+                                              OMAP3_ISP_IOMEM_RESZ,
+                                              ISPRSZ_VFILT10 + (i * 0x04));
+                               j += 2;
+                       }
+               }
+       }
+
+       ispresizer_config_outlineoffset(output_w*2);
+       DPRINTK_ISPRESZ("ispresizer_config_size()-\n");
+       return 0;
+}
+EXPORT_SYMBOL(ispresizer_config_size);
+
+void __ispresizer_enable(int enable)
+{
+       int val;
+       DPRINTK_ISPRESZ("+ispresizer_enable()+\n");
+       if (enable) {
+               val = (isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR) & 0x2) |
+                       ISPRSZ_PCR_ENABLE;
+       } else {
+               val = isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR) &
+                       ~ISPRSZ_PCR_ENABLE;
+       }
+       isp_reg_writel(val, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR);
+       DPRINTK_ISPRESZ("+ispresizer_enable()-\n");
+}
+
+/**
+ * ispresizer_enable - Enables the resizer module.
+ * @enable: 1 - Enable, 0 - Disable
+ *
+ * Client should configure all the sub modules in resizer before this.
+ **/
+void ispresizer_enable(int enable)
+{
+       __ispresizer_enable(enable);
+       ispres_obj.pm_state = enable;
+}
+EXPORT_SYMBOL(ispresizer_enable);
+
+/**
+ * ispresizer_suspend - Suspend resizer module.
+ **/
+void ispresizer_suspend(void)
+{
+       if (ispres_obj.pm_state)
+               __ispresizer_enable(0);
+}
+EXPORT_SYMBOL(ispresizer_suspend);
+
+/**
+ * ispresizer_resume - Resume resizer module.
+ **/
+void ispresizer_resume(void)
+{
+       if (ispres_obj.pm_state)
+               __ispresizer_enable(1);
+}
+EXPORT_SYMBOL(ispresizer_resume);
+
+/**
+ * ispresizer_busy - Checks if ISP resizer is busy.
+ *
+ * Returns busy field from ISPRSZ_PCR register.
+ **/
+int ispresizer_busy(void)
+{
+       return isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR) &
+               ISPPRV_PCR_BUSY;
+}
+EXPORT_SYMBOL(ispresizer_busy);
+
+/**
+ * ispresizer_config_startphase - Sets the horizontal and vertical start phase.
+ * @hstartphase: horizontal start phase (0 - 7).
+ * @vstartphase: vertical startphase (0 - 7).
+ *
+ * This API just updates the isp_res struct. Actual register write happens in
+ * ispresizer_config_size.
+ **/
+void ispresizer_config_startphase(u8 hstartphase, u8 vstartphase)
+{
+       DPRINTK_ISPRESZ("ispresizer_config_startphase()+\n");
+       ispres_obj.h_startphase = hstartphase;
+       ispres_obj.v_startphase = vstartphase;
+       DPRINTK_ISPRESZ("ispresizer_config_startphase()-\n");
+}
+EXPORT_SYMBOL(ispresizer_config_startphase);
+
+/**
+ * ispresizer_config_ycpos - Specifies if output should be in YC or CY format.
+ * @yc: 0 - YC format, 1 - CY format
+ **/
+void ispresizer_config_ycpos(u8 yc)
+{
+       DPRINTK_ISPRESZ("ispresizer_config_ycpos()+\n");
+       isp_reg_and_or(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, ~ISPRSZ_CNT_YCPOS,
+                      (yc ? ISPRSZ_CNT_YCPOS : 0));
+       DPRINTK_ISPRESZ("ispresizer_config_ycpos()-\n");
+}
+EXPORT_SYMBOL(ispresizer_config_ycpos);
+
+/**
+ * Sets the chrominance algorithm
+ * @cbilin: 0 - chrominance uses same processing as luminance,
+ *          1 - bilinear interpolation processing
+ **/
+void ispresizer_enable_cbilin(u8 enable)
+{
+       DPRINTK_ISPRESZ("ispresizer_enable_cbilin()+\n");
+       isp_reg_and_or(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, ~ISPRSZ_CNT_CBILIN,
+                      (enable ? ISPRSZ_CNT_CBILIN : 0));
+       DPRINTK_ISPRESZ("ispresizer_enable_cbilin()-\n");
+}
+EXPORT_SYMBOL(ispresizer_enable_cbilin);
+
+/**
+ * ispresizer_config_luma_enhance - Configures luminance enhancer parameters.
+ * @yenh: Pointer to structure containing desired values for core, slope, gain
+ *        and algo parameters.
+ **/
+void ispresizer_config_luma_enhance(struct isprsz_yenh *yenh)
+{
+       DPRINTK_ISPRESZ("ispresizer_config_luma_enhance()+\n");
+       ispres_obj.algo = yenh->algo;
+       isp_reg_writel((yenh->algo << ISPRSZ_YENH_ALGO_SHIFT) |
+                      (yenh->gain << ISPRSZ_YENH_GAIN_SHIFT) |
+                      (yenh->slope << ISPRSZ_YENH_SLOP_SHIFT) |
+                      (yenh->coreoffset << ISPRSZ_YENH_CORE_SHIFT),
+                      OMAP3_ISP_IOMEM_RESZ,
+                      ISPRSZ_YENH);
+       DPRINTK_ISPRESZ("ispresizer_config_luma_enhance()-\n");
+}
+EXPORT_SYMBOL(ispresizer_config_luma_enhance);
+
+/**
+ * ispresizer_config_filter_coef - Sets filter coefficients for 4 & 7-tap mode.
+ * This API just updates the isp_res struct.Actual register write happens in
+ * ispresizer_config_size.
+ * @coef: Structure containing horizontal and vertical filter coefficients for
+ *        both 4-tap and 7-tap mode.
+ **/
+void ispresizer_config_filter_coef(struct isprsz_coef *coef)
+{
+       int i;
+       DPRINTK_ISPRESZ("ispresizer_config_filter_coef()+\n");
+       for (i = 0; i < 32; i++) {
+               ispres_obj.coeflist.h_filter_coef_4tap[i] =
+                       coef->h_filter_coef_4tap[i];
+               ispres_obj.coeflist.v_filter_coef_4tap[i] =
+                       coef->v_filter_coef_4tap[i];
+       }
+       for (i = 0; i < 28; i++) {
+               ispres_obj.coeflist.h_filter_coef_7tap[i] =
+                       coef->h_filter_coef_7tap[i];
+               ispres_obj.coeflist.v_filter_coef_7tap[i] =
+                       coef->v_filter_coef_7tap[i];
+       }
+       DPRINTK_ISPRESZ("ispresizer_config_filter_coef()-\n");
+}
+EXPORT_SYMBOL(ispresizer_config_filter_coef);
+
+/**
+ * ispresizer_config_inlineoffset - Configures the read address line offset.
+ * @offset: Line Offset for the input image.
+ *
+ * Returns 0 if successful, or -EINVAL if offset is not 32 bits aligned.
+ **/
+int ispresizer_config_inlineoffset(u32 offset)
+{
+       DPRINTK_ISPRESZ("ispresizer_config_inlineoffset()+\n");
+       if (offset % 32)
+               return -EINVAL;
+       isp_reg_writel(offset << ISPRSZ_SDR_INOFF_OFFSET_SHIFT,
+                      OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INOFF);
+       DPRINTK_ISPRESZ("ispresizer_config_inlineoffset()-\n");
+       return 0;
+}
+EXPORT_SYMBOL(ispresizer_config_inlineoffset);
+
+/**
+ * ispresizer_set_inaddr - Sets the memory address of the input frame.
+ * @addr: 32bit memory address aligned on 32byte boundary.
+ *
+ * Returns 0 if successful, or -EINVAL if address is not 32 bits aligned.
+ **/
+int ispresizer_set_inaddr(u32 addr)
+{
+       DPRINTK_ISPRESZ("ispresizer_set_inaddr()+\n");
+       if (addr % 32)
+               return -EINVAL;
+       isp_reg_writel(addr << ISPRSZ_SDR_INADD_ADDR_SHIFT,
+                      OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD);
+       ispres_obj.tmp_buf = addr;
+       DPRINTK_ISPRESZ("ispresizer_set_inaddr()-\n");
+       return 0;
+}
+EXPORT_SYMBOL(ispresizer_set_inaddr);
+
+/**
+ * ispresizer_config_outlineoffset - Configures the write address line offset.
+ * @offset: Line offset for the preview output.
+ *
+ * Returns 0 if successful, or -EINVAL if address is not 32 bits aligned.
+ **/
+int ispresizer_config_outlineoffset(u32 offset)
+{
+       DPRINTK_ISPRESZ("ispresizer_config_outlineoffset()+\n");
+       if (offset % 32)
+               return -EINVAL;
+       isp_reg_writel(offset << ISPRSZ_SDR_OUTOFF_OFFSET_SHIFT,
+                      OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTOFF);
+       DPRINTK_ISPRESZ("ispresizer_config_outlineoffset()-\n");
+       return 0;
+}
+EXPORT_SYMBOL(ispresizer_config_outlineoffset);
+
+/**
+ * Configures the memory address to which the output frame is written.
+ * @addr: 32bit memory address aligned on 32byte boundary.
+ **/
+int ispresizer_set_outaddr(u32 addr)
+{
+       DPRINTK_ISPRESZ("ispresizer_set_outaddr()+\n");
+       if (addr % 32)
+               return -EINVAL;
+       isp_reg_writel(addr << ISPRSZ_SDR_OUTADD_ADDR_SHIFT,
+                      OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTADD);
+       DPRINTK_ISPRESZ("ispresizer_set_outaddr()-\n");
+       return 0;
+}
+EXPORT_SYMBOL(ispresizer_set_outaddr);
+
+/**
+ * ispresizer_save_context - Saves the values of the resizer module registers.
+ **/
+void ispresizer_save_context(void)
+{
+       DPRINTK_ISPRESZ("Saving context\n");
+       isp_save_context(isprsz_reg_list);
+}
+EXPORT_SYMBOL(ispresizer_save_context);
+
+/**
+ * ispresizer_restore_context - Restores resizer module register values.
+ **/
+void ispresizer_restore_context(void)
+{
+       DPRINTK_ISPRESZ("Restoring context\n");
+       isp_restore_context(isprsz_reg_list);
+}
+EXPORT_SYMBOL(ispresizer_restore_context);
+
+/**
+ * ispresizer_print_status - Prints the values of the resizer module registers.
+ **/
+void ispresizer_print_status()
+{
+       if (!is_ispresz_debug_enabled())
+               return;
+       DPRINTK_ISPRESZ("###ISP_CTRL inresizer =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_MAIN, ISP_CTRL));
+       DPRINTK_ISPRESZ("###ISP_IRQ0ENABLE in resizer =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0ENABLE));
+       DPRINTK_ISPRESZ("###ISP_IRQ0STATUS in resizer =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS));
+       DPRINTK_ISPRESZ("###RSZ PCR =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR));
+       DPRINTK_ISPRESZ("###RSZ CNT =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT));
+       DPRINTK_ISPRESZ("###RSZ OUT SIZE =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_OUT_SIZE));
+       DPRINTK_ISPRESZ("###RSZ IN START =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_START));
+       DPRINTK_ISPRESZ("###RSZ IN SIZE =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_SIZE));
+       DPRINTK_ISPRESZ("###RSZ SDR INADD =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD));
+       DPRINTK_ISPRESZ("###RSZ SDR INOFF =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INOFF));
+       DPRINTK_ISPRESZ("###RSZ SDR OUTADD =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTADD));
+       DPRINTK_ISPRESZ("###RSZ SDR OTOFF =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTOFF));
+       DPRINTK_ISPRESZ("###RSZ YENH =0x%x\n",
+                       isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_YENH));
+}
+EXPORT_SYMBOL(ispresizer_print_status);
+
+/**
+ * isp_resizer_init - Module Initialisation.
+ *
+ * Always returns 0.
+ **/
+int __init isp_resizer_init(void)
+{
+       mutex_init(&ispres_obj.ispres_mutex);
+       ispres_obj.pm_state = 0;
+       return 0;
+}
+
+/**
+ * isp_resizer_cleanup - Module Cleanup.
+ **/
+void isp_resizer_cleanup(void)
+{
+}
diff --git a/drivers/media/video/isp/ispresizer.h b/drivers/media/video/isp/ispresizer.h
new file mode 100644
index 0000000..4e92225
--- /dev/null
+++ b/drivers/media/video/isp/ispresizer.h
@@ -0,0 +1,158 @@
+/*
+ * ispresizer.h
+ *
+ * Driver header file for Resizer module in TI's OMAP3 Camera ISP
+ *
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Contributors:
+ *     Sameer Venkatraman <sameerv@ti.com>
+ *     Mohit Jalori
+ *     Sergio Aguirre <saaguirre@ti.com>
+ *
+ * This package 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 PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef OMAP_ISP_RESIZER_H
+#define OMAP_ISP_RESIZER_H
+
+/*
+ * Resizer Constants
+ */
+#define MAX_IN_WIDTH_MEMORY_MODE       4095
+
+#define MAX_IN_WIDTH_ONTHEFLY_MODE     1280
+#define MAX_IN_WIDTH_ONTHEFLY_MODE_ES2 4095
+#define MAX_IN_HEIGHT                  4095
+#define MINIMUM_RESIZE_VALUE           64
+#define MAXIMUM_RESIZE_VALUE           1024
+#define MID_RESIZE_VALUE               512
+
+#define MAX_7TAP_HRSZ_OUTWIDTH         1280
+#define MAX_7TAP_VRSZ_OUTWIDTH         640
+
+#define MAX_7TAP_HRSZ_OUTWIDTH_ES2     3300
+#define MAX_7TAP_VRSZ_OUTWIDTH_ES2     1650
+
+#define DEFAULTSTPIXEL                 0
+#define DEFAULTSTPHASE                 1
+#define DEFAULTHSTPIXEL4TAPMODE                3
+#define FOURPHASE                      4
+#define EIGHTPHASE                     8
+#define RESIZECONSTANT                 256
+#define SHIFTER4TAPMODE                        0
+#define SHIFTER7TAPMODE                        1
+#define DEFAULTOFFSET                  7
+#define OFFSETVERT4TAPMODE             4
+#define OPWDALIGNCONSTANT              0xfffffff0
+
+/*
+ * The client is supposed to call resizer API in the following sequence:
+ *     - request()
+ *     - config_datatpath()
+ *     - optionally config/enable sub modules
+ *     - try/config size
+ *     - setup callback
+ *     - setup in/out memory offsets and ptrs
+ *     - enable()
+ *     ...
+ *     - disable()
+ *     - free()
+ */
+
+enum ispresizer_input {
+       RSZ_OTFLY_YUV,
+       RSZ_MEM_YUV,
+       RSZ_MEM_COL8
+};
+
+/**
+ * struct isprsz_coef - Structure for resizer filter coeffcients.
+ * @h_filter_coef_4tap: Horizontal filter coefficients for 8-phase/4-tap
+ *                     mode (.5x-4x)
+ * @v_filter_coef_4tap: Vertical filter coefficients for 8-phase/4-tap
+ *                     mode (.5x-4x)
+ * @h_filter_coef_7tap: Horizontal filter coefficients for 4-phase/7-tap
+ *                     mode (.25x-.5x)
+ * @v_filter_coef_7tap: Vertical filter coefficients for 4-phase/7-tap
+ *                     mode (.25x-.5x)
+ */
+struct isprsz_coef {
+       u16 h_filter_coef_4tap[32];
+       u16 v_filter_coef_4tap[32];
+       u16 h_filter_coef_7tap[28];
+       u16 v_filter_coef_7tap[28];
+};
+
+/**
+ * struct isprsz_yenh - Structure for resizer luminance enhancer parameters.
+ * @algo: Algorithm select.
+ * @gain: Maximum gain.
+ * @slope: Slope.
+ * @coreoffset: Coring offset.
+ */
+struct isprsz_yenh {
+       u8 algo;
+       u8 gain;
+       u8 slope;
+       u8 coreoffset;
+};
+
+void ispresizer_config_shadow_registers(void);
+
+int ispresizer_request(void);
+
+int ispresizer_free(void);
+
+int ispresizer_config_datapath(enum ispresizer_input input);
+
+void ispresizer_enable_cbilin(u8 enable);
+
+void ispresizer_config_ycpos(u8 yc);
+
+void ispresizer_config_startphase(u8 hstartphase, u8 vstartphase);
+
+void ispresizer_config_filter_coef(struct isprsz_coef *coef);
+
+void ispresizer_config_luma_enhance(struct isprsz_yenh *yenh);
+
+int ispresizer_try_size(u32 *input_w, u32 *input_h, u32 *output_w,
+                       u32 *output_h);
+
+void ispresizer_applycrop(void);
+
+void ispresizer_trycrop(u32 left, u32 top, u32 width, u32 height, u32 ow,
+                       u32 oh);
+
+int ispresizer_config_size(u32 input_w, u32 input_h, u32 output_w,
+                          u32 output_h);
+
+int ispresizer_config_inlineoffset(u32 offset);
+
+int ispresizer_set_inaddr(u32 addr);
+
+int ispresizer_config_outlineoffset(u32 offset);
+
+int ispresizer_set_outaddr(u32 addr);
+
+void ispresizer_enable(int enable);
+
+void ispresizer_suspend(void);
+
+void ispresizer_resume(void);
+
+int ispresizer_busy(void);
+
+void ispresizer_save_context(void);
+
+void ispresizer_restore_context(void);
+
+void ispresizer_print_status(void);
+
+#endif         /* OMAP_ISP_RESIZER_H */
-- 
1.5.6.5