/*
 * Renesas RCar Fine Display Processor
 *
 * Video format converter and frame deinterlacer device.
 *
 * Author: Kieran Bingham, <kieran@bingham.xyz>
 * Copyright (c) 2016 Renesas Electronics Corporation.
 *
 * This code is developed and inspired from the vim2m, rcar_jpu,
 * m2m-deinterlace, and vsp1 drivers.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version
 */

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/timer.h>
#include <media/rcar-fcp.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-dma-contig.h>

static unsigned int debug;
module_param(debug, uint, 0644);
MODULE_PARM_DESC(debug, "activate debug info");

/* Minimum and maximum frame width/height */
#define FDP1_MIN_W              80U
#define FDP1_MIN_H              80U

#define FDP1_MAX_W              3840U
#define FDP1_MAX_H              2160U

#define FDP1_MAX_PLANES         3U
#define FDP1_MAX_STRIDE         8190U

/* Flags that indicate a format can be used for capture/output */
#define FDP1_CAPTURE            BIT(0)
#define FDP1_OUTPUT             BIT(1)

#define DRIVER_NAME             "rcar_fdp1"

/* Number of Job's to have available on the processing queue */
#define FDP1_NUMBER_JOBS 8

#define dprintk(fdp1, fmt, arg...) \
        v4l2_dbg(1, debug, &fdp1->v4l2_dev, "%s: " fmt, __func__, ## arg)

/*
 * FDP1 registers and bits
 */

/* FDP1 start register - Imm */
#define FD1_CTL_CMD                     0x0000
#define FD1_CTL_CMD_STRCMD              BIT(0)

/* Sync generator register - Imm */
#define FD1_CTL_SGCMD                   0x0004
#define FD1_CTL_SGCMD_SGEN              BIT(0)

/* Register set end register - Imm */
#define FD1_CTL_REGEND                  0x0008
#define FD1_CTL_REGEND_REGEND           BIT(0)

/* Channel activation register - Vupdt */
#define FD1_CTL_CHACT                   0x000c
#define FD1_CTL_CHACT_SMW               BIT(9)
#define FD1_CTL_CHACT_WR                BIT(8)
#define FD1_CTL_CHACT_SMR               BIT(3)
#define FD1_CTL_CHACT_RD2               BIT(2)
#define FD1_CTL_CHACT_RD1               BIT(1)
#define FD1_CTL_CHACT_RD0               BIT(0)

/* Operation Mode Register - Vupdt */
#define FD1_CTL_OPMODE                  0x0010
#define FD1_CTL_OPMODE_PRG              BIT(4)
#define FD1_CTL_OPMODE_VIMD_INTERRUPT   (0 << 0)
#define FD1_CTL_OPMODE_VIMD_BESTEFFORT  (1 << 0)
#define FD1_CTL_OPMODE_VIMD_NOINTERRUPT (2 << 0)

#define FD1_CTL_VPERIOD                 0x0014
#define FD1_CTL_CLKCTRL                 0x0018
#define FD1_CTL_CLKCTRL_CSTP_N          BIT(0)

/* Software reset register */
#define FD1_CTL_SRESET                  0x001c
#define FD1_CTL_SRESET_SRST             BIT(0)

/* Control status register (V-update-status) */
#define FD1_CTL_STATUS                  0x0024
#define FD1_CTL_STATUS_VINT_CNT_MASK    GENMASK(31, 16)
#define FD1_CTL_STATUS_VINT_CNT_SHIFT   16
#define FD1_CTL_STATUS_SGREGSET         BIT(10)
#define FD1_CTL_STATUS_SGVERR           BIT(9)
#define FD1_CTL_STATUS_SGFREND          BIT(8)
#define FD1_CTL_STATUS_BSY              BIT(0)

#define FD1_CTL_VCYCLE_STAT             0x0028

/* Interrupt enable register */
#define FD1_CTL_IRQENB                  0x0038
/* Interrupt status register */
#define FD1_CTL_IRQSTA                  0x003c
/* Interrupt control register */
#define FD1_CTL_IRQFSET                 0x0040

/* Common IRQ Bit settings */
#define FD1_CTL_IRQ_VERE                BIT(16)
#define FD1_CTL_IRQ_VINTE               BIT(4)
#define FD1_CTL_IRQ_FREE                BIT(0)
#define FD1_CTL_IRQ_MASK                (FD1_CTL_IRQ_VERE | \
                                         FD1_CTL_IRQ_VINTE | \
                                         FD1_CTL_IRQ_FREE)

/* RPF */
#define FD1_RPF_SIZE                    0x0060
#define FD1_RPF_SIZE_MASK               GENMASK(12, 0)
#define FD1_RPF_SIZE_H_SHIFT            16
#define FD1_RPF_SIZE_V_SHIFT            0

#define FD1_RPF_FORMAT                  0x0064
#define FD1_RPF_FORMAT_CIPM             BIT(16)
#define FD1_RPF_FORMAT_RSPYCS           BIT(13)
#define FD1_RPF_FORMAT_RSPUVS           BIT(12)
#define FD1_RPF_FORMAT_CF               BIT(8)

#define FD1_RPF_PSTRIDE                 0x0068
#define FD1_RPF_PSTRIDE_Y_SHIFT         16
#define FD1_RPF_PSTRIDE_C_SHIFT         0

/* RPF0 Source Component Y Address register */
#define FD1_RPF0_ADDR_Y                 0x006c

/* RPF1 Current Picture Registers */
#define FD1_RPF1_ADDR_Y                 0x0078
#define FD1_RPF1_ADDR_C0                0x007c
#define FD1_RPF1_ADDR_C1                0x0080

/* RPF2 next picture register */
#define FD1_RPF2_ADDR_Y                 0x0084

#define FD1_RPF_SMSK_ADDR               0x0090
#define FD1_RPF_SWAP                    0x0094

/* WPF */
#define FD1_WPF_FORMAT                  0x00c0
#define FD1_WPF_FORMAT_PDV_SHIFT        24
#define FD1_WPF_FORMAT_FCNL             BIT(20)
#define FD1_WPF_FORMAT_WSPYCS           BIT(15)
#define FD1_WPF_FORMAT_WSPUVS           BIT(14)
#define FD1_WPF_FORMAT_WRTM_601_16      (0 << 9)
#define FD1_WPF_FORMAT_WRTM_601_0       (1 << 9)
#define FD1_WPF_FORMAT_WRTM_709_16      (2 << 9)
#define FD1_WPF_FORMAT_CSC              BIT(8)

#define FD1_WPF_RNDCTL                  0x00c4
#define FD1_WPF_RNDCTL_CBRM             BIT(28)
#define FD1_WPF_RNDCTL_CLMD_NOCLIP      (0 << 12)
#define FD1_WPF_RNDCTL_CLMD_CLIP_16_235 (1 << 12)
#define FD1_WPF_RNDCTL_CLMD_CLIP_1_254  (2 << 12)

#define FD1_WPF_PSTRIDE                 0x00c8
#define FD1_WPF_PSTRIDE_Y_SHIFT         16
#define FD1_WPF_PSTRIDE_C_SHIFT         0

/* WPF Destination picture */
#define FD1_WPF_ADDR_Y                  0x00cc
#define FD1_WPF_ADDR_C0                 0x00d0
#define FD1_WPF_ADDR_C1                 0x00d4
#define FD1_WPF_SWAP                    0x00d8
#define FD1_WPF_SWAP_OSWAP_SHIFT        0
#define FD1_WPF_SWAP_SSWAP_SHIFT        4

/* WPF/RPF Common */
#define FD1_RWPF_SWAP_BYTE              BIT(0)
#define FD1_RWPF_SWAP_WORD              BIT(1)
#define FD1_RWPF_SWAP_LWRD              BIT(2)
#define FD1_RWPF_SWAP_LLWD              BIT(3)

/* IPC */
#define FD1_IPC_MODE                    0x0100
#define FD1_IPC_MODE_DLI                BIT(8)
#define FD1_IPC_MODE_DIM_ADAPT2D3D      (0 << 0)
#define FD1_IPC_MODE_DIM_FIXED2D        (1 << 0)
#define FD1_IPC_MODE_DIM_FIXED3D        (2 << 0)
#define FD1_IPC_MODE_DIM_PREVFIELD      (3 << 0)
#define FD1_IPC_MODE_DIM_NEXTFIELD      (4 << 0)

#define FD1_IPC_SMSK_THRESH             0x0104
#define FD1_IPC_SMSK_THRESH_CONST       0x00010002

#define FD1_IPC_COMB_DET                0x0108
#define FD1_IPC_COMB_DET_CONST          0x00200040

#define FD1_IPC_MOTDEC                  0x010c
#define FD1_IPC_MOTDEC_CONST            0x00008020

/* DLI registers */
#define FD1_IPC_DLI_BLEND               0x0120
#define FD1_IPC_DLI_BLEND_CONST         0x0080ff02

#define FD1_IPC_DLI_HGAIN               0x0124
#define FD1_IPC_DLI_HGAIN_CONST         0x001000ff

#define FD1_IPC_DLI_SPRS                0x0128
#define FD1_IPC_DLI_SPRS_CONST          0x009004ff

#define FD1_IPC_DLI_ANGLE               0x012c
#define FD1_IPC_DLI_ANGLE_CONST         0x0004080c

#define FD1_IPC_DLI_ISOPIX0             0x0130
#define FD1_IPC_DLI_ISOPIX0_CONST       0xff10ff10

#define FD1_IPC_DLI_ISOPIX1             0x0134
#define FD1_IPC_DLI_ISOPIX1_CONST       0x0000ff10

/* Sensor registers */
#define FD1_IPC_SENSOR_TH0              0x0140
#define FD1_IPC_SENSOR_TH0_CONST        0x20208080

#define FD1_IPC_SENSOR_TH1              0x0144
#define FD1_IPC_SENSOR_TH1_CONST        0

#define FD1_IPC_SENSOR_CTL0             0x0170
#define FD1_IPC_SENSOR_CTL0_CONST       0x00002201

#define FD1_IPC_SENSOR_CTL1             0x0174
#define FD1_IPC_SENSOR_CTL1_CONST       0

#define FD1_IPC_SENSOR_CTL2             0x0178
#define FD1_IPC_SENSOR_CTL2_X_SHIFT     16
#define FD1_IPC_SENSOR_CTL2_Y_SHIFT     0

#define FD1_IPC_SENSOR_CTL3             0x017c
#define FD1_IPC_SENSOR_CTL3_0_SHIFT     16
#define FD1_IPC_SENSOR_CTL3_1_SHIFT     0

/* Line memory pixel number register */
#define FD1_IPC_LMEM                    0x01e0
#define FD1_IPC_LMEM_LINEAR             1024
#define FD1_IPC_LMEM_TILE               960

/* Internal Data (HW Version) */
#define FD1_IP_INTDATA                  0x0800
#define FD1_IP_H3                       0x02010101
#define FD1_IP_M3W                      0x02010202

/* LUTs */
#define FD1_LUT_DIF_ADJ                 0x1000
#define FD1_LUT_SAD_ADJ                 0x1400
#define FD1_LUT_BLD_GAIN                0x1800
#define FD1_LUT_DIF_GAIN                0x1c00
#define FD1_LUT_MDET                    0x2000

/**
 * struct fdp1_fmt - The FDP1 internal format data
 * @fourcc: the fourcc code, to match the V4L2 API
 * @bpp: bits per pixel per plane
 * @num_planes: number of planes
 * @hsub: horizontal subsampling factor
 * @vsub: vertical subsampling factor
 * @fmt: 7-bit format code for the fdp1 hardware
 * @swap_yc: the Y and C components are swapped (Y comes before C)
 * @swap_uv: the U and V components are swapped (V comes before U)
 * @swap: swap register control
 * @types: types of queue this format is applicable to
 */
struct fdp1_fmt {
        u32     fourcc;
        u8      bpp[3];
        u8      num_planes;
        u8      hsub;
        u8      vsub;
        u8      fmt;
        bool    swap_yc;
        bool    swap_uv;
        u8      swap;
        u8      types;
};

static const struct fdp1_fmt fdp1_formats[] = {
        /* RGB formats are only supported by the Write Pixel Formatter */

        { V4L2_PIX_FMT_RGB332, { 8, 0, 0 }, 1, 1, 1, 0x00, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_XRGB444, { 16, 0, 0 }, 1, 1, 1, 0x01, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_XRGB555, { 16, 0, 0 }, 1, 1, 1, 0x04, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_RGB565, { 16, 0, 0 }, 1, 1, 1, 0x06, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_ABGR32, { 32, 0, 0 }, 1, 1, 1, 0x13, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_XBGR32, { 32, 0, 0 }, 1, 1, 1, 0x13, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_ARGB32, { 32, 0, 0 }, 1, 1, 1, 0x13, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_XRGB32, { 32, 0, 0 }, 1, 1, 1, 0x13, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_RGB24, { 24, 0, 0 }, 1, 1, 1, 0x15, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_BGR24, { 24, 0, 0 }, 1, 1, 1, 0x18, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_ARGB444, { 16, 0, 0 }, 1, 1, 1, 0x19, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD,
          FDP1_CAPTURE },
        { V4L2_PIX_FMT_ARGB555, { 16, 0, 0 }, 1, 1, 1, 0x1b, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD,
          FDP1_CAPTURE },

        /* YUV Formats are supported by Read and Write Pixel Formatters */

        { V4L2_PIX_FMT_NV16M, { 8, 16, 0 }, 2, 2, 1, 0x41, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_NV61M, { 8, 16, 0 }, 2, 2, 1, 0x41, false, true,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_NV12M, { 8, 16, 0 }, 2, 2, 2, 0x42, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_NV21M, { 8, 16, 0 }, 2, 2, 2, 0x42, false, true,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_UYVY, { 16, 0, 0 }, 1, 2, 1, 0x47, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_VYUY, { 16, 0, 0 }, 1, 2, 1, 0x47, false, true,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_YUYV, { 16, 0, 0 }, 1, 2, 1, 0x47, true, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_YVYU, { 16, 0, 0 }, 1, 2, 1, 0x47, true, true,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_YUV444M, { 8, 8, 8 }, 3, 1, 1, 0x4a, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_YVU444M, { 8, 8, 8 }, 3, 1, 1, 0x4a, false, true,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_YUV422M, { 8, 8, 8 }, 3, 2, 1, 0x4b, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_YVU422M, { 8, 8, 8 }, 3, 2, 1, 0x4b, false, true,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_YUV420M, { 8, 8, 8 }, 3, 2, 2, 0x4c, false, false,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
        { V4L2_PIX_FMT_YVU420M, { 8, 8, 8 }, 3, 2, 2, 0x4c, false, true,
          FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
          FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
          FDP1_CAPTURE | FDP1_OUTPUT },
};

static int fdp1_fmt_is_rgb(const struct fdp1_fmt *fmt)
{
        return fmt->fmt <= 0x1b; /* Last RGB code */
}

/*
 * FDP1 Lookup tables range from 0...255 only
 *
 * Each table must be less than 256 entries, and all tables
 * are padded out to 256 entries by duplicating the last value.
 */
static const u8 fdp1_diff_adj[] = {
        0x00, 0x24, 0x43, 0x5e, 0x76, 0x8c, 0x9e, 0xaf,
        0xbd, 0xc9, 0xd4, 0xdd, 0xe4, 0xea, 0xef, 0xf3,
        0xf6, 0xf9, 0xfb, 0xfc, 0xfd, 0xfe, 0xfe, 0xff,
};

static const u8 fdp1_sad_adj[] = {
        0x00, 0x24, 0x43, 0x5e, 0x76, 0x8c, 0x9e, 0xaf,
        0xbd, 0xc9, 0xd4, 0xdd, 0xe4, 0xea, 0xef, 0xf3,
        0xf6, 0xf9, 0xfb, 0xfc, 0xfd, 0xfe, 0xfe, 0xff,
};

static const u8 fdp1_bld_gain[] = {
        0x80,
};

static const u8 fdp1_dif_gain[] = {
        0x80,
};

static const u8 fdp1_mdet[] = {
        0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
        0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
        0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
        0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
        0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
        0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
        0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
        0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
        0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
        0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
        0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
        0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
        0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
        0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
        0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
        0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
        0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
        0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
        0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
        0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
        0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
        0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
        0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
        0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
        0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
        0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
        0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
        0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
        0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
        0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
        0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
        0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
};

/* Per-queue, driver-specific private data */
struct fdp1_q_data {
        const struct fdp1_fmt           *fmt;
        struct v4l2_pix_format_mplane   format;

        unsigned int                    vsize;
        unsigned int                    stride_y;
        unsigned int                    stride_c;
};

static const struct fdp1_fmt *fdp1_find_format(u32 pixelformat)
{
        const struct fdp1_fmt *fmt;
        unsigned int i;

        for (i = 0; i < ARRAY_SIZE(fdp1_formats); i++) {
                fmt = &fdp1_formats[i];
                if (fmt->fourcc == pixelformat)
                        return fmt;
        }

        return NULL;
}

enum fdp1_deint_mode {
        FDP1_PROGRESSIVE = 0, /* Must be zero when !deinterlacing */
        FDP1_ADAPT2D3D,
        FDP1_FIXED2D,
        FDP1_FIXED3D,
        FDP1_PREVFIELD,
        FDP1_NEXTFIELD,
};

#define FDP1_DEINT_MODE_USES_NEXT(mode) \
        (mode == FDP1_ADAPT2D3D || \
         mode == FDP1_FIXED3D   || \
         mode == FDP1_NEXTFIELD)

#define FDP1_DEINT_MODE_USES_PREV(mode) \
        (mode == FDP1_ADAPT2D3D || \
         mode == FDP1_FIXED3D   || \
         mode == FDP1_PREVFIELD)

/*
 * FDP1 operates on potentially 3 fields, which are tracked
 * from the VB buffers using this context structure.
 * Will always be a field or a full frame, never two fields.
 */
struct fdp1_field_buffer {
        struct vb2_v4l2_buffer          *vb;
        dma_addr_t                      addrs[3];

        /* Should be NONE:TOP:BOTTOM only */
        enum v4l2_field                 field;

        /* Flag to indicate this is the last field in the vb */
        bool                            last_field;

        /* Buffer queue lists */
        struct list_head                list;
};

struct fdp1_buffer {
        struct v4l2_m2m_buffer          m2m_buf;
        struct fdp1_field_buffer        fields[2];
        unsigned int                    num_fields;
};

static inline struct fdp1_buffer *to_fdp1_buffer(struct vb2_v4l2_buffer *vb)
{
        return container_of(vb, struct fdp1_buffer, m2m_buf.vb);
}

struct fdp1_job {
        struct fdp1_field_buffer        *previous;
        struct fdp1_field_buffer        *active;
        struct fdp1_field_buffer        *next;
        struct fdp1_field_buffer        *dst;

        /* A job can only be on one list at a time */
        struct list_head                list;
};

struct fdp1_dev {
        struct v4l2_device              v4l2_dev;
        struct video_device             vfd;

        struct mutex                    dev_mutex;
        spinlock_t                      irqlock;
        spinlock_t                      device_process_lock;

        void __iomem                    *regs;
        unsigned int                    irq;
        struct device                   *dev;

        /* Job Queues */
        struct fdp1_job                 jobs[FDP1_NUMBER_JOBS];
        struct list_head                free_job_list;
        struct list_head                queued_job_list;
        struct list_head                hw_job_list;

        unsigned int                    clk_rate;

        struct rcar_fcp_device          *fcp;
        struct v4l2_m2m_dev             *m2m_dev;
};

struct fdp1_ctx {
        struct v4l2_fh                  fh;
        struct fdp1_dev                 *fdp1;

        struct v4l2_ctrl_handler        hdl;
        unsigned int                    sequence;

        /* Processed buffers in this transaction */
        u8                              num_processed;

        /* Transaction length (i.e. how many buffers per transaction) */
        u32                             translen;

        /* Abort requested by m2m */
        int                             aborting;

        /* Deinterlace processing mode */
        enum fdp1_deint_mode            deint_mode;

        /*
         * Adaptive 2D/3D mode uses a shared mask
         * This is allocated at streamon, if the ADAPT2D3D mode
         * is requested
         */
        unsigned int                    smsk_size;
        dma_addr_t                      smsk_addr[2];
        void                            *smsk_cpu;

        /* Capture pipeline, can specify an alpha value
         * for supported formats. 0-255 only
         */
        unsigned char                   alpha;

        /* Source and destination queue data */
        struct fdp1_q_data              out_q; /* HW Source */
        struct fdp1_q_data              cap_q; /* HW Destination */

        /*
         * Field Queues
         * Interlaced fields are used on 3 occasions, and tracked in this list.
         *
         * V4L2 Buffers are tracked inside the fdp1_buffer
         * and released when the last 'field' completes
         */
        struct list_head                fields_queue;
        unsigned int                    buffers_queued;

        /*
         * For de-interlacing we need to track our previous buffer
         * while preparing our job lists.
         */
        struct fdp1_field_buffer        *previous;
};

static inline struct fdp1_ctx *fh_to_ctx(struct v4l2_fh *fh)
{
        return container_of(fh, struct fdp1_ctx, fh);
}

static struct fdp1_q_data *get_q_data(struct fdp1_ctx *ctx,
                                         enum v4l2_buf_type type)
{
        if (V4L2_TYPE_IS_OUTPUT(type))
                return &ctx->out_q;
        else
                return &ctx->cap_q;
}

/*
 * list_remove_job: Take the first item off the specified job list
 *
 * Returns: pointer to a job, or NULL if the list is empty.
 */
static struct fdp1_job *list_remove_job(struct fdp1_dev *fdp1,
                                         struct list_head *list)
{
        struct fdp1_job *job;
        unsigned long flags;

        spin_lock_irqsave(&fdp1->irqlock, flags);
        job = list_first_entry_or_null(list, struct fdp1_job, list);
        if (job)
                list_del(&job->list);
        spin_unlock_irqrestore(&fdp1->irqlock, flags);

        return job;
}

/*
 * list_add_job: Add a job to the specified job list
 *
 * Returns: void - always succeeds
 */
static void list_add_job(struct fdp1_dev *fdp1,
                         struct list_head *list,
                         struct fdp1_job *job)
{
        unsigned long flags;

        spin_lock_irqsave(&fdp1->irqlock, flags);
        list_add_tail(&job->list, list);
        spin_unlock_irqrestore(&fdp1->irqlock, flags);
}

static struct fdp1_job *fdp1_job_alloc(struct fdp1_dev *fdp1)
{
        return list_remove_job(fdp1, &fdp1->free_job_list);
}

static void fdp1_job_free(struct fdp1_dev *fdp1, struct fdp1_job *job)
{
        /* Ensure that all residue from previous jobs is gone */
        memset(job, 0, sizeof(struct fdp1_job));

        list_add_job(fdp1, &fdp1->free_job_list, job);
}

static void queue_job(struct fdp1_dev *fdp1, struct fdp1_job *job)
{
        list_add_job(fdp1, &fdp1->queued_job_list, job);
}

static struct fdp1_job *get_queued_job(struct fdp1_dev *fdp1)
{
        return list_remove_job(fdp1, &fdp1->queued_job_list);
}

static void queue_hw_job(struct fdp1_dev *fdp1, struct fdp1_job *job)
{
        list_add_job(fdp1, &fdp1->hw_job_list, job);
}

static struct fdp1_job *get_hw_queued_job(struct fdp1_dev *fdp1)
{
        return list_remove_job(fdp1, &fdp1->hw_job_list);
}

/*
 * Buffer lists handling
 */
static void fdp1_field_complete(struct fdp1_ctx *ctx,
                                struct fdp1_field_buffer *fbuf)
{
        /* job->previous may be on the first field */
        if (!fbuf)
                return;

        if (fbuf->last_field)
                v4l2_m2m_buf_done(fbuf->vb, VB2_BUF_STATE_DONE);
}

static void fdp1_queue_field(struct fdp1_ctx *ctx,
                             struct fdp1_field_buffer *fbuf)
{
        unsigned long flags;

        spin_lock_irqsave(&ctx->fdp1->irqlock, flags);
        list_add_tail(&fbuf->list, &ctx->fields_queue);
        spin_unlock_irqrestore(&ctx->fdp1->irqlock, flags);

        ctx->buffers_queued++;
}

static struct fdp1_field_buffer *fdp1_dequeue_field(struct fdp1_ctx *ctx)
{
        struct fdp1_field_buffer *fbuf;
        unsigned long flags;

        ctx->buffers_queued--;

        spin_lock_irqsave(&ctx->fdp1->irqlock, flags);
        fbuf = list_first_entry_or_null(&ctx->fields_queue,
                                        struct fdp1_field_buffer, list);
        if (fbuf)
                list_del(&fbuf->list);
        spin_unlock_irqrestore(&ctx->fdp1->irqlock, flags);

        return fbuf;
}

/*
 * Return the next field in the queue - or NULL,
 * without removing the item from the list
 */
static struct fdp1_field_buffer *fdp1_peek_queued_field(struct fdp1_ctx *ctx)
{
        struct fdp1_field_buffer *fbuf;
        unsigned long flags;

        spin_lock_irqsave(&ctx->fdp1->irqlock, flags);
        fbuf = list_first_entry_or_null(&ctx->fields_queue,
                                        struct fdp1_field_buffer, list);
        spin_unlock_irqrestore(&ctx->fdp1->irqlock, flags);

        return fbuf;
}

static u32 fdp1_read(struct fdp1_dev *fdp1, unsigned int reg)
{
        u32 value = ioread32(fdp1->regs + reg);

        if (debug >= 2)
                dprintk(fdp1, "Read 0x%08x from 0x%04x\n", value, reg);

        return value;
}

static void fdp1_write(struct fdp1_dev *fdp1, u32 val, unsigned int reg)
{
        if (debug >= 2)
                dprintk(fdp1, "Write 0x%08x to 0x%04x\n", val, reg);

        iowrite32(val, fdp1->regs + reg);
}

/* IPC registers are to be programmed with constant values */
static void fdp1_set_ipc_dli(struct fdp1_ctx *ctx)
{
        struct fdp1_dev *fdp1 = ctx->fdp1;

        fdp1_write(fdp1, FD1_IPC_SMSK_THRESH_CONST,     FD1_IPC_SMSK_THRESH);
        fdp1_write(fdp1, FD1_IPC_COMB_DET_CONST,        FD1_IPC_COMB_DET);
        fdp1_write(fdp1, FD1_IPC_MOTDEC_CONST,  FD1_IPC_MOTDEC);

        fdp1_write(fdp1, FD1_IPC_DLI_BLEND_CONST,       FD1_IPC_DLI_BLEND);
        fdp1_write(fdp1, FD1_IPC_DLI_HGAIN_CONST,       FD1_IPC_DLI_HGAIN);
        fdp1_write(fdp1, FD1_IPC_DLI_SPRS_CONST,        FD1_IPC_DLI_SPRS);
        fdp1_write(fdp1, FD1_IPC_DLI_ANGLE_CONST,       FD1_IPC_DLI_ANGLE);
        fdp1_write(fdp1, FD1_IPC_DLI_ISOPIX0_CONST,     FD1_IPC_DLI_ISOPIX0);
        fdp1_write(fdp1, FD1_IPC_DLI_ISOPIX1_CONST,     FD1_IPC_DLI_ISOPIX1);
}


static void fdp1_set_ipc_sensor(struct fdp1_ctx *ctx)
{
        struct fdp1_dev *fdp1 = ctx->fdp1;
        struct fdp1_q_data *src_q_data = &ctx->out_q;
        unsigned int x0, x1;
        unsigned int hsize = src_q_data->format.width;
        unsigned int vsize = src_q_data->format.height;

        x0 = hsize / 3;
        x1 = 2 * hsize / 3;

        fdp1_write(fdp1, FD1_IPC_SENSOR_TH0_CONST, FD1_IPC_SENSOR_TH0);
        fdp1_write(fdp1, FD1_IPC_SENSOR_TH1_CONST, FD1_IPC_SENSOR_TH1);
        fdp1_write(fdp1, FD1_IPC_SENSOR_CTL0_CONST, FD1_IPC_SENSOR_CTL0);
        fdp1_write(fdp1, FD1_IPC_SENSOR_CTL1_CONST, FD1_IPC_SENSOR_CTL1);

        fdp1_write(fdp1, ((hsize - 1) << FD1_IPC_SENSOR_CTL2_X_SHIFT) |
                         ((vsize - 1) << FD1_IPC_SENSOR_CTL2_Y_SHIFT),
                         FD1_IPC_SENSOR_CTL2);

        fdp1_write(fdp1, (x0 << FD1_IPC_SENSOR_CTL3_0_SHIFT) |
                         (x1 << FD1_IPC_SENSOR_CTL3_1_SHIFT),
                         FD1_IPC_SENSOR_CTL3);
}

/*
 * fdp1_write_lut: Write a padded LUT to the hw
 *
 * FDP1 uses constant data for de-interlacing processing,
 * with large tables. These hardware tables are all 256 bytes
 * long, however they often contain repeated data at the end.
 *
 * The last byte of the table is written to all remaining entries.
 */
static void fdp1_write_lut(struct fdp1_dev *fdp1, const u8 *lut,
                           unsigned int len, unsigned int base)
{
        unsigned int i;
        u8 pad;

        /* Tables larger than the hw are clipped */
        len = min(len, 256u);

        for (i = 0; i < len; i++)
                fdp1_write(fdp1, lut[i], base + (i*4));

        /* Tables are padded with the last entry */
        pad = lut[i-1];

        for (; i < 256; i++)
                fdp1_write(fdp1, pad, base + (i*4));
}

static void fdp1_set_lut(struct fdp1_dev *fdp1)
{
        fdp1_write_lut(fdp1, fdp1_diff_adj, ARRAY_SIZE(fdp1_diff_adj),
                        FD1_LUT_DIF_ADJ);
        fdp1_write_lut(fdp1, fdp1_sad_adj,  ARRAY_SIZE(fdp1_sad_adj),
                        FD1_LUT_SAD_ADJ);
        fdp1_write_lut(fdp1, fdp1_bld_gain, ARRAY_SIZE(fdp1_bld_gain),
                        FD1_LUT_BLD_GAIN);
        fdp1_write_lut(fdp1, fdp1_dif_gain, ARRAY_SIZE(fdp1_dif_gain),
                        FD1_LUT_DIF_GAIN);
        fdp1_write_lut(fdp1, fdp1_mdet, ARRAY_SIZE(fdp1_mdet),
                        FD1_LUT_MDET);
}

static void fdp1_configure_rpf(struct fdp1_ctx *ctx,
                               struct fdp1_job *job)
{
        struct fdp1_dev *fdp1 = ctx->fdp1;
        u32 picture_size;
        u32 pstride;
        u32 format;
        u32 smsk_addr;

        struct fdp1_q_data *q_data = &ctx->out_q;

        /* Picture size is common to Source and Destination frames */
        picture_size = (q_data->format.width << FD1_RPF_SIZE_H_SHIFT)
                     | (q_data->vsize << FD1_RPF_SIZE_V_SHIFT);

        /* Strides */
        pstride = q_data->stride_y << FD1_RPF_PSTRIDE_Y_SHIFT;
        if (q_data->format.num_planes > 1)
                pstride |= q_data->stride_c << FD1_RPF_PSTRIDE_C_SHIFT;

        /* Format control */
        format = q_data->fmt->fmt;
        if (q_data->fmt->swap_yc)
                format |= FD1_RPF_FORMAT_RSPYCS;

        if (q_data->fmt->swap_uv)
                format |= FD1_RPF_FORMAT_RSPUVS;

        if (job->active->field == V4L2_FIELD_BOTTOM) {
                format |= FD1_RPF_FORMAT_CF; /* Set for Bottom field */
                smsk_addr = ctx->smsk_addr[0];
        } else {
                smsk_addr = ctx->smsk_addr[1];
        }

        /* Deint mode is non-zero when deinterlacing */
        if (ctx->deint_mode)
                format |= FD1_RPF_FORMAT_CIPM;

        fdp1_write(fdp1, format, FD1_RPF_FORMAT);
        fdp1_write(fdp1, q_data->fmt->swap, FD1_RPF_SWAP);
        fdp1_write(fdp1, picture_size, FD1_RPF_SIZE);
        fdp1_write(fdp1, pstride, FD1_RPF_PSTRIDE);
        fdp1_write(fdp1, smsk_addr, FD1_RPF_SMSK_ADDR);

        /* Previous Field Channel (CH0) */
        if (job->previous)
                fdp1_write(fdp1, job->previous->addrs[0], FD1_RPF0_ADDR_Y);

        /* Current Field Channel (CH1) */
        fdp1_write(fdp1, job->active->addrs[0], FD1_RPF1_ADDR_Y);
        fdp1_write(fdp1, job->active->addrs[1], FD1_RPF1_ADDR_C0);
        fdp1_write(fdp1, job->active->addrs[2], FD1_RPF1_ADDR_C1);

        /* Next Field  Channel (CH2) */
        if (job->next)
                fdp1_write(fdp1, job->next->addrs[0], FD1_RPF2_ADDR_Y);
}

static void fdp1_configure_wpf(struct fdp1_ctx *ctx,
                               struct fdp1_job *job)
{
        struct fdp1_dev *fdp1 = ctx->fdp1;
        struct fdp1_q_data *src_q_data = &ctx->out_q;
        struct fdp1_q_data *q_data = &ctx->cap_q;
        u32 pstride;
        u32 format;
        u32 swap;
        u32 rndctl;

        pstride = q_data->format.plane_fmt[0].bytesperline
                        << FD1_WPF_PSTRIDE_Y_SHIFT;

        if (q_data->format.num_planes > 1)
                pstride |= q_data->format.plane_fmt[1].bytesperline
                        << FD1_WPF_PSTRIDE_C_SHIFT;

        format = q_data->fmt->fmt; /* Output Format Code */

        if (q_data->fmt->swap_yc)
                format |= FD1_WPF_FORMAT_WSPYCS;

        if (q_data->fmt->swap_uv)
                format |= FD1_WPF_FORMAT_WSPUVS;

        if (fdp1_fmt_is_rgb(q_data->fmt)) {
                /* Enable Colour Space conversion */
                format |= FD1_WPF_FORMAT_CSC;

                /* Set WRTM */
                if (src_q_data->format.ycbcr_enc == V4L2_YCBCR_ENC_709)
                        format |= FD1_WPF_FORMAT_WRTM_709_16;
                else if (src_q_data->format.quantization ==
                                V4L2_QUANTIZATION_FULL_RANGE)
                        format |= FD1_WPF_FORMAT_WRTM_601_0;
                else
                        format |= FD1_WPF_FORMAT_WRTM_601_16;
        }

        /* Set an alpha value into the Pad Value */
        format |= ctx->alpha << FD1_WPF_FORMAT_PDV_SHIFT;

        /* Determine picture rounding and clipping */
        rndctl = FD1_WPF_RNDCTL_CBRM; /* Rounding Off */
        rndctl |= FD1_WPF_RNDCTL_CLMD_NOCLIP;

        /* WPF Swap needs both ISWAP and OSWAP setting */
        swap = q_data->fmt->swap << FD1_WPF_SWAP_OSWAP_SHIFT;
        swap |= src_q_data->fmt->swap << FD1_WPF_SWAP_SSWAP_SHIFT;

        fdp1_write(fdp1, format, FD1_WPF_FORMAT);
        fdp1_write(fdp1, rndctl, FD1_WPF_RNDCTL);
        fdp1_write(fdp1, swap, FD1_WPF_SWAP);
        fdp1_write(fdp1, pstride, FD1_WPF_PSTRIDE);

        fdp1_write(fdp1, job->dst->addrs[0], FD1_WPF_ADDR_Y);
        fdp1_write(fdp1, job->dst->addrs[1], FD1_WPF_ADDR_C0);
        fdp1_write(fdp1, job->dst->addrs[2], FD1_WPF_ADDR_C1);
}

static void fdp1_configure_deint_mode(struct fdp1_ctx *ctx,

                                      struct fdp1_job *job)
{
        struct fdp1_dev *fdp1 = ctx->fdp1;
        u32 opmode = FD1_CTL_OPMODE_VIMD_NOINTERRUPT;
        u32 ipcmode = FD1_IPC_MODE_DLI; /* Always set */
        u32 channels = FD1_CTL_CHACT_WR | FD1_CTL_CHACT_RD1; /* Always on */

        /* De-interlacing Mode */
        switch (ctx->deint_mode) {
        default:
        case FDP1_PROGRESSIVE:
                dprintk(fdp1, "Progressive Mode\n");
                opmode |= FD1_CTL_OPMODE_PRG;
                ipcmode |= FD1_IPC_MODE_DIM_FIXED2D;
                break;
        case FDP1_ADAPT2D3D:
                dprintk(fdp1, "Adapt2D3D Mode\n");
                if (ctx->sequence == 0 || ctx->aborting)
                        ipcmode |= FD1_IPC_MODE_DIM_FIXED2D;
                else
                        ipcmode |= FD1_IPC_MODE_DIM_ADAPT2D3D;

                if (ctx->sequence > 1) {
                        channels |= FD1_CTL_CHACT_SMW;
                        channels |= FD1_CTL_CHACT_RD0 | FD1_CTL_CHACT_RD2;
                }

                if (ctx->sequence > 2)
                        channels |= FD1_CTL_CHACT_SMR;

                break;
        case FDP1_FIXED3D:
                dprintk(fdp1, "Fixed 3D Mode\n");
                ipcmode |= FD1_IPC_MODE_DIM_FIXED3D;
                /* Except for first and last frame, enable all channels */
                if (!(ctx->sequence == 0 || ctx->aborting))
                        channels |= FD1_CTL_CHACT_RD0 | FD1_CTL_CHACT_RD2;
                break;
        case FDP1_FIXED2D:
                dprintk(fdp1, "Fixed 2D Mode\n");
                ipcmode |= FD1_IPC_MODE_DIM_FIXED2D;
                /* No extra channels enabled */
                break;
        case FDP1_PREVFIELD:
                dprintk(fdp1, "Previous Field Mode\n");
                ipcmode |= FD1_IPC_MODE_DIM_PREVFIELD;
                channels |= FD1_CTL_CHACT_RD0; /* Previous */
                break;
        case FDP1_NEXTFIELD:
                dprintk(fdp1, "Next Field Mode\n");
                ipcmode |= FD1_IPC_MODE_DIM_NEXTFIELD;
                channels |= FD1_CTL_CHACT_RD2; /* Next */
                break;
        }

        fdp1_write(fdp1, channels,      FD1_CTL_CHACT);
        fdp1_write(fdp1, opmode,        FD1_CTL_OPMODE);
        fdp1_write(fdp1, ipcmode,       FD1_IPC_MODE);
}

/*
 * fdp1_device_process() - Run the hardware
 *
 * Configure and start the hardware to generate a single frame
 * of output given our input parameters.
 */
static int fdp1_device_process(struct fdp1_ctx *ctx)

{
        struct fdp1_dev *fdp1 = ctx->fdp1;
        struct fdp1_job *job;
        unsigned long flags;

        spin_lock_irqsave(&fdp1->device_process_lock, flags);

        /* Get a job to process */
        job = get_queued_job(fdp1);
        if (!job) {
                /*
                 * VINT can call us to see if we can queue another job.
                 * If we have no work to do, we simply return.
                 */
                spin_unlock_irqrestore(&fdp1->device_process_lock, flags);
                return 0;
        }

        /* First Frame only? ... */
        fdp1_write(fdp1, FD1_CTL_CLKCTRL_CSTP_N, FD1_CTL_CLKCTRL);

        /* Set the mode, and configuration */
        fdp1_configure_deint_mode(ctx, job);

        /* DLI Static Configuration */
        fdp1_set_ipc_dli(ctx);

        /* Sensor Configuration */
        fdp1_set_ipc_sensor(ctx);

        /* Setup the source picture */
        fdp1_configure_rpf(ctx, job);

        /* Setup the destination picture */
        fdp1_configure_wpf(ctx, job);

        /* Line Memory Pixel Number Register for linear access */
        fdp1_write(fdp1, FD1_IPC_LMEM_LINEAR, FD1_IPC_LMEM);

        /* Enable Interrupts */
        fdp1_write(fdp1, FD1_CTL_IRQ_MASK, FD1_CTL_IRQENB);

        /* Finally, the Immediate Registers */

        /* This job is now in the HW queue */
        queue_hw_job(fdp1, job);

        /* Start the command */
        fdp1_write(fdp1, FD1_CTL_CMD_STRCMD, FD1_CTL_CMD);

        /* Registers will update to HW at next VINT */
        fdp1_write(fdp1, FD1_CTL_REGEND_REGEND, FD1_CTL_REGEND);

        /* Enable VINT Generator */
        fdp1_write(fdp1, FD1_CTL_SGCMD_SGEN, FD1_CTL_SGCMD);

        spin_unlock_irqrestore(&fdp1->device_process_lock, flags);

        return 0;
}

/*
 * mem2mem callbacks
 */

/**
 * job_ready() - check whether an instance is ready to be scheduled to run
 */
static int fdp1_m2m_job_ready(void *priv)
{
        struct fdp1_ctx *ctx = priv;
        struct fdp1_q_data *src_q_data = &ctx->out_q;
        int srcbufs = 1;
        int dstbufs = 1;

        dprintk(ctx->fdp1, "+ Src: %d : Dst: %d\n",
                        v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx),
                        v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx));

        /* One output buffer is required for each field */
        if (V4L2_FIELD_HAS_BOTH(src_q_data->format.field))
                dstbufs = 2;

        if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) < srcbufs
            || v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx) < dstbufs) {
                dprintk(ctx->fdp1, "Not enough buffers available\n");
                return 0;
        }

        return 1;
}

static void fdp1_m2m_job_abort(void *priv)
{
        struct fdp1_ctx *ctx = priv;

        dprintk(ctx->fdp1, "+\n");

        /* Will cancel the transaction in the next interrupt handler */
        ctx->aborting = 1;

        /* Immediate abort sequence */
        fdp1_write(ctx->fdp1, 0, FD1_CTL_SGCMD);
        fdp1_write(ctx->fdp1, FD1_CTL_SRESET_SRST, FD1_CTL_SRESET);
}

/*
 * fdp1_prepare_job: Prepare and queue a new job for a single action of work
 *
 * Prepare the next field, (or frame in progressive) and an output
 * buffer for the hardware to perform a single operation.
 */
static struct fdp1_job *fdp1_prepare_job(struct fdp1_ctx *ctx)
{
        struct vb2_v4l2_buffer *vbuf;
        struct fdp1_buffer *fbuf;
        struct fdp1_dev *fdp1 = ctx->fdp1;
        struct fdp1_job *job;
        unsigned int buffers_required = 1;

        dprintk(fdp1, "+\n");

        if (FDP1_DEINT_MODE_USES_NEXT(ctx->deint_mode))
                buffers_required = 2;

        if (ctx->buffers_queued < buffers_required)
                return NULL;

        job = fdp1_job_alloc(fdp1);
        if (!job) {
                dprintk(fdp1, "No free jobs currently available\n");
                return NULL;
        }

        job->active = fdp1_dequeue_field(ctx);
        if (!job->active) {
                /* Buffer check should prevent this ever happening */
                dprintk(fdp1, "No input buffers currently available\n");

                fdp1_job_free(fdp1, job);
                return NULL;
        }

        dprintk(fdp1, "+ Buffer en-route...\n");

        /* Source buffers have been prepared on our buffer_queue
         * Prepare our Output buffer
         */
        vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
        fbuf = to_fdp1_buffer(vbuf);
        job->dst = &fbuf->fields[0];

        job->active->vb->sequence = ctx->sequence;
        job->dst->vb->sequence = ctx->sequence;
        ctx->sequence++;

        if (FDP1_DEINT_MODE_USES_PREV(ctx->deint_mode)) {
                job->previous = ctx->previous;

                /* Active buffer becomes the next job's previous buffer */
                ctx->previous = job->active;
        }

        if (FDP1_DEINT_MODE_USES_NEXT(ctx->deint_mode)) {
                /* Must be called after 'active' is dequeued */
                job->next = fdp1_peek_queued_field(ctx);
        }

        /* Transfer timestamps and flags from src->dst */

        job->dst->vb->vb2_buf.timestamp = job->active->vb->vb2_buf.timestamp;

        job->dst->vb->flags = job->active->vb->flags &
                                V4L2_BUF_FLAG_TSTAMP_SRC_MASK;

        /* Ideally, the frame-end function will just 'check' to see
         * if there are more jobs instead
         */
        ctx->translen++;

        /* Finally, Put this job on the processing queue */
        queue_job(fdp1, job);

        dprintk(fdp1, "Job Queued translen = %d\n", ctx->translen);

        return job;
}

/* fdp1_m2m_device_run() - prepares and starts the device for an M2M task
 *
 * A single input buffer is taken and serialised into our fdp1_buffer
 * queue. The queue is then processed to create as many jobs as possible
 * from our available input.
 */
static void fdp1_m2m_device_run(void *priv)
{
        struct fdp1_ctx *ctx = priv;
        struct fdp1_dev *fdp1 = ctx->fdp1;
        struct vb2_v4l2_buffer *src_vb;
        struct fdp1_buffer *buf;
        unsigned int i;

        dprintk(fdp1, "+\n");

        ctx->translen = 0;

        /* Get our incoming buffer of either one or two fields, or one frame */
        src_vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
        buf = to_fdp1_buffer(src_vb);

        for (i = 0; i < buf->num_fields; i++) {
                struct fdp1_field_buffer *fbuf = &buf->fields[i];

                fdp1_queue_field(ctx, fbuf);
                dprintk(fdp1, "Queued Buffer [%d] last_field:%d\n",
                                i, fbuf->last_field);
        }

        /* Queue as many jobs as our data provides for */
        while (fdp1_prepare_job(ctx))
                ;

        if (ctx->translen == 0) {
                dprintk(fdp1, "No jobs were processed. M2M action complete\n");
                v4l2_m2m_job_finish(fdp1->m2m_dev, ctx->fh.m2m_ctx);
                return;
        }

        /* Kick the job processing action */
        fdp1_device_process(ctx);
}

/*
 * device_frame_end:
 *
 * Handles the M2M level after a buffer completion event.
 */
static void device_frame_end(struct fdp1_dev *fdp1,
                             enum vb2_buffer_state state)
{
        struct fdp1_ctx *ctx;
        unsigned long flags;
        struct fdp1_job *job = get_hw_queued_job(fdp1);

        dprintk(fdp1, "+\n");

        ctx = v4l2_m2m_get_curr_priv(fdp1->m2m_dev);

        if (ctx == NULL) {
                v4l2_err(&fdp1->v4l2_dev,
                        "Instance released before the end of transaction\n");
                return;
        }

        ctx->num_processed++;

        /*
         * fdp1_field_complete will call buf_done only when the last vb2_buffer
         * reference is complete
         */
        if (FDP1_DEINT_MODE_USES_PREV(ctx->deint_mode))
                fdp1_field_complete(ctx, job->previous);
        else
                fdp1_field_complete(ctx, job->active);

        spin_lock_irqsave(&fdp1->irqlock, flags);
        v4l2_m2m_buf_done(job->dst->vb, state);
        job->dst = NULL;
        spin_unlock_irqrestore(&fdp1->irqlock, flags);

        /* Move this job back to the free job list */
        fdp1_job_free(fdp1, job);

        dprintk(fdp1, "curr_ctx->num_processed %d curr_ctx->translen %d\n",
                        ctx->num_processed, ctx->translen);

        if (ctx->num_processed == ctx->translen ||
                        ctx->aborting) {
                dprintk(ctx->fdp1, "Finishing transaction\n");
                ctx->num_processed = 0;
                v4l2_m2m_job_finish(fdp1->m2m_dev, ctx->fh.m2m_ctx);
        } else {
                /*
                 * For pipelined performance support, this would
                 * be called from a VINT handler
                 */
                fdp1_device_process(ctx);
        }
}

/*
 * video ioctls
 */
static int fdp1_vidioc_querycap(struct file *file, void *priv,
                           struct v4l2_capability *cap)
{
        strlcpy(cap->driver, DRIVER_NAME, sizeof(cap->driver));
        strlcpy(cap->card, DRIVER_NAME, sizeof(cap->card));
        snprintf(cap->bus_info, sizeof(cap->bus_info),
                        "platform:%s", DRIVER_NAME);
        return 0;
}

static int fdp1_enum_fmt(struct v4l2_fmtdesc *f, u32 type)
{
        unsigned int i, num;

        num = 0;

        for (i = 0; i < ARRAY_SIZE(fdp1_formats); ++i) {
                if (fdp1_formats[i].types & type) {
                        if (num == f->index)
                                break;
                        ++num;
                }
        }

        /* Format not found */
        if (i >= ARRAY_SIZE(fdp1_formats))
                return -EINVAL;

        /* Format found */
        f->pixelformat = fdp1_formats[i].fourcc;

        return 0;
}

static int fdp1_enum_fmt_vid_cap(struct file *file, void *priv,
                                 struct v4l2_fmtdesc *f)
{
        return fdp1_enum_fmt(f, FDP1_CAPTURE);
}

static int fdp1_enum_fmt_vid_out(struct file *file, void *priv,
                                   struct v4l2_fmtdesc *f)
{
        return fdp1_enum_fmt(f, FDP1_OUTPUT);
}

static int fdp1_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
{
        struct fdp1_q_data *q_data;
        struct fdp1_ctx *ctx = fh_to_ctx(priv);

        if (!v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type))
                return -EINVAL;

        q_data = get_q_data(ctx, f->type);
        f->fmt.pix_mp = q_data->format;

        return 0;
}

static void fdp1_compute_stride(struct v4l2_pix_format_mplane *pix,
                                const struct fdp1_fmt *fmt)
{
        unsigned int i;

        /* Compute and clamp the stride and image size. */
        for (i = 0; i < min_t(unsigned int, fmt->num_planes, 2U); ++i) {
                unsigned int hsub = i > 0 ? fmt->hsub : 1;
                unsigned int vsub = i > 0 ? fmt->vsub : 1;
                 /* From VSP : TODO: Confirm alignment limits for FDP1 */
                unsigned int align = 128;
                unsigned int bpl;

                bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline,
                              pix->width / hsub * fmt->bpp[i] / 8,
                              round_down(FDP1_MAX_STRIDE, align));

                pix->plane_fmt[i].bytesperline = round_up(bpl, align);
                pix->plane_fmt[i].sizeimage = pix->plane_fmt[i].bytesperline
                                            * pix->height / vsub;

                memset(pix->plane_fmt[i].reserved, 0,
                       sizeof(pix->plane_fmt[i].reserved));
        }

        if (fmt->num_planes == 3) {
                /* The two chroma planes must have the same stride. */
                pix->plane_fmt[2].bytesperline = pix->plane_fmt[1].bytesperline;
                pix->plane_fmt[2].sizeimage = pix->plane_fmt[1].sizeimage;

                memset(pix->plane_fmt[2].reserved, 0,
                       sizeof(pix->plane_fmt[2].reserved));
        }
}

static void fdp1_try_fmt_output(struct fdp1_ctx *ctx,
                                const struct fdp1_fmt **fmtinfo,
                                struct v4l2_pix_format_mplane *pix)
{
        const struct fdp1_fmt *fmt;
        unsigned int width;
        unsigned int height;

        /* Validate the pixel format to ensure the output queue supports it. */
        fmt = fdp1_find_format(pix->pixelformat);
        if (!fmt || !(fmt->types & FDP1_OUTPUT))
                fmt = fdp1_find_format(V4L2_PIX_FMT_YUYV);

        if (fmtinfo)
                *fmtinfo = fmt;

        pix->pixelformat = fmt->fourcc;
        pix->num_planes = fmt->num_planes;

        /*
         * Progressive video and all interlaced field orders are acceptable.
         * Default to V4L2_FIELD_INTERLACED.
         */
        if (pix->field != V4L2_FIELD_NONE &&
            pix->field != V4L2_FIELD_ALTERNATE &&
            !V4L2_FIELD_HAS_BOTH(pix->field))
                pix->field = V4L2_FIELD_INTERLACED;

        /*
         * The deinterlacer doesn't care about the colorspace, accept all values
         * and default to V4L2_COLORSPACE_SMPTE170M. The YUV to RGB conversion
         * at the output of the deinterlacer supports a subset of encodings and
         * quantization methods and will only be available when the colorspace
         * allows it.
         */
        if (pix->colorspace == V4L2_COLORSPACE_DEFAULT)
                pix->colorspace = V4L2_COLORSPACE_SMPTE170M;

        /*
         * Align the width and height for YUV 4:2:2 and 4:2:0 formats and clamp
         * them to the supported frame size range. The height boundary are
         * related to the full frame, divide them by two when the format passes
         * fields in separate buffers.
         */
        width = round_down(pix->width, fmt->hsub);
        pix->width = clamp(width, FDP1_MIN_W, FDP1_MAX_W);

        height = round_down(pix->height, fmt->vsub);
        if (pix->field == V4L2_FIELD_ALTERNATE)
                pix->height = clamp(height, FDP1_MIN_H / 2, FDP1_MAX_H / 2);
        else
                pix->height = clamp(height, FDP1_MIN_H, FDP1_MAX_H);

        fdp1_compute_stride(pix, fmt);
}

static void fdp1_try_fmt_capture(struct fdp1_ctx *ctx,
                                 const struct fdp1_fmt **fmtinfo,
                                 struct v4l2_pix_format_mplane *pix)
{
        struct fdp1_q_data *src_data = &ctx->out_q;
        enum v4l2_colorspace colorspace;
        enum v4l2_ycbcr_encoding ycbcr_enc;
        enum v4l2_quantization quantization;
        const struct fdp1_fmt *fmt;
        bool allow_rgb;

        /*
         * Validate the pixel format. We can only accept RGB output formats if
         * the input encoding and quantization are compatible with the format
         * conversions supported by the hardware. The supported combinations are
         *
         * V4L2_YCBCR_ENC_601 + V4L2_QUANTIZATION_LIM_RANGE
         * V4L2_YCBCR_ENC_601 + V4L2_QUANTIZATION_FULL_RANGE
         * V4L2_YCBCR_ENC_709 + V4L2_QUANTIZATION_LIM_RANGE
         */
        colorspace = src_data->format.colorspace;

        ycbcr_enc = src_data->format.ycbcr_enc;
        if (ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
                ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(colorspace);

        quantization = src_data->format.quantization;
        if (quantization == V4L2_QUANTIZATION_DEFAULT)
                quantization = V4L2_MAP_QUANTIZATION_DEFAULT(false, colorspace,
                                                             ycbcr_enc);

        allow_rgb = ycbcr_enc == V4L2_YCBCR_ENC_601 ||
                    (ycbcr_enc == V4L2_YCBCR_ENC_709 &&
                     quantization == V4L2_QUANTIZATION_LIM_RANGE);

        fmt = fdp1_find_format(pix->pixelformat);
        if (!fmt || (!allow_rgb && fdp1_fmt_is_rgb(fmt)))
                fmt = fdp1_find_format(V4L2_PIX_FMT_YUYV);

        if (fmtinfo)
                *fmtinfo = fmt;

        pix->pixelformat = fmt->fourcc;
        pix->num_planes = fmt->num_planes;
        pix->field = V4L2_FIELD_NONE;

        /*
         * The colorspace on the capture queue is copied from the output queue
         * as the hardware can't change the colorspace. It can convert YCbCr to
         * RGB though, in which case the encoding and quantization are set to
         * default values as anything else wouldn't make sense.
         */
        pix->colorspace = src_data->format.colorspace;
        pix->xfer_func = src_data->format.xfer_func;

        if (fdp1_fmt_is_rgb(fmt)) {
                pix->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
                pix->quantization = V4L2_QUANTIZATION_DEFAULT;
        } else {
                pix->ycbcr_enc = src_data->format.ycbcr_enc;
                pix->quantization = src_data->format.quantization;
        }

        /*
         * The frame width is identical to the output queue, and the height is
         * either doubled or identical depending on whether the output queue
         * field order contains one or two fields per frame.
         */
        pix->width = src_data->format.width;
        if (src_data->format.field == V4L2_FIELD_ALTERNATE)
                pix->height = 2 * src_data->format.height;
        else
                pix->height = src_data->format.height;

        fdp1_compute_stride(pix, fmt);
}

static int fdp1_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
{
        struct fdp1_ctx *ctx = fh_to_ctx(priv);

        if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                fdp1_try_fmt_output(ctx, NULL, &f->fmt.pix_mp);
        else
                fdp1_try_fmt_capture(ctx, NULL, &f->fmt.pix_mp);

        dprintk(ctx->fdp1, "Try %s format: %4.4s (0x%08x) %ux%u field %u\n",
                V4L2_TYPE_IS_OUTPUT(f->type) ? "output" : "capture",
                (char *)&f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.pixelformat,
                f->fmt.pix_mp.width, f->fmt.pix_mp.height, f->fmt.pix_mp.field);

        return 0;
}

static void fdp1_set_format(struct fdp1_ctx *ctx,
                            struct v4l2_pix_format_mplane *pix,
                            enum v4l2_buf_type type)
{
        struct fdp1_q_data *q_data = get_q_data(ctx, type);
        const struct fdp1_fmt *fmtinfo;

        if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
                fdp1_try_fmt_output(ctx, &fmtinfo, pix);
        else
                fdp1_try_fmt_capture(ctx, &fmtinfo, pix);

        q_data->fmt = fmtinfo;
        q_data->format = *pix;

        q_data->vsize = pix->height;
        if (pix->field != V4L2_FIELD_NONE)
                q_data->vsize /= 2;

        q_data->stride_y = pix->plane_fmt[0].bytesperline;
        q_data->stride_c = pix->plane_fmt[1].bytesperline;

        /* Adjust strides for interleaved buffers */
        if (pix->field == V4L2_FIELD_INTERLACED ||
            pix->field == V4L2_FIELD_INTERLACED_TB ||
            pix->field == V4L2_FIELD_INTERLACED_BT) {
                q_data->stride_y *= 2;
                q_data->stride_c *= 2;
        }

        /* Propagate the format from the output node to the capture node. */
        if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
                struct fdp1_q_data *dst_data = &ctx->cap_q;

                /*
                 * Copy the format, clear the per-plane bytes per line and image
                 * size, override the field and double the height if needed.
                 */
                dst_data->format = q_data->format;
                memset(dst_data->format.plane_fmt, 0,
                       sizeof(dst_data->format.plane_fmt));

                dst_data->format.field = V4L2_FIELD_NONE;
                if (pix->field == V4L2_FIELD_ALTERNATE)
                        dst_data->format.height *= 2;

                fdp1_try_fmt_capture(ctx, &dst_data->fmt, &dst_data->format);

                dst_data->vsize = dst_data->format.height;
                dst_data->stride_y = dst_data->format.plane_fmt[0].bytesperline;
                dst_data->stride_c = dst_data->format.plane_fmt[1].bytesperline;
        }
}

static int fdp1_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
{
        struct fdp1_ctx *ctx = fh_to_ctx(priv);
        struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
        struct vb2_queue *vq = v4l2_m2m_get_vq(m2m_ctx, f->type);

        if (vb2_is_busy(vq)) {
                v4l2_err(&ctx->fdp1->v4l2_dev, "%s queue busy\n", __func__);
                return -EBUSY;
        }

        fdp1_set_format(ctx, &f->fmt.pix_mp, f->type);

        dprintk(ctx->fdp1, "Set %s format: %4.4s (0x%08x) %ux%u field %u\n",
                V4L2_TYPE_IS_OUTPUT(f->type) ? "output" : "capture",
                (char *)&f->fmt.pix_mp.pixelformat, f->fmt.pix_mp.pixelformat,
                f->fmt.pix_mp.width, f->fmt.pix_mp.height, f->fmt.pix_mp.field);

        return 0;
}

static int fdp1_g_ctrl(struct v4l2_ctrl *ctrl)
{
        struct fdp1_ctx *ctx =
                container_of(ctrl->handler, struct fdp1_ctx, hdl);
        struct fdp1_q_data *src_q_data = &ctx->out_q;

        switch (ctrl->id) {
        case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
                if (V4L2_FIELD_HAS_BOTH(src_q_data->format.field))
                        ctrl->val = 2;
                else
                        ctrl->val = 1;
                return 0;
        }

        return 1;
}

static int fdp1_s_ctrl(struct v4l2_ctrl *ctrl)
{
        struct fdp1_ctx *ctx =
                container_of(ctrl->handler, struct fdp1_ctx, hdl);

        switch (ctrl->id) {
        case V4L2_CID_ALPHA_COMPONENT:
                ctx->alpha = ctrl->val;
                break;

        case V4L2_CID_DEINTERLACING_MODE:
                ctx->deint_mode = ctrl->val;
                break;
        }

        return 0;
}

static const struct v4l2_ctrl_ops fdp1_ctrl_ops = {
        .s_ctrl = fdp1_s_ctrl,
        .g_volatile_ctrl = fdp1_g_ctrl,
};

static const char * const fdp1_ctrl_deint_menu[] = {
        "Progressive",
        "Adaptive 2D/3D",
        "Fixed 2D",
        "Fixed 3D",
        "Previous field",
        "Next field",
        NULL
};

static const struct v4l2_ioctl_ops fdp1_ioctl_ops = {
        .vidioc_querycap        = fdp1_vidioc_querycap,

        .vidioc_enum_fmt_vid_cap_mplane = fdp1_enum_fmt_vid_cap,
        .vidioc_enum_fmt_vid_out_mplane = fdp1_enum_fmt_vid_out,
        .vidioc_g_fmt_vid_cap_mplane    = fdp1_g_fmt,
        .vidioc_g_fmt_vid_out_mplane    = fdp1_g_fmt,
        .vidioc_try_fmt_vid_cap_mplane  = fdp1_try_fmt,
        .vidioc_try_fmt_vid_out_mplane  = fdp1_try_fmt,
        .vidioc_s_fmt_vid_cap_mplane    = fdp1_s_fmt,
        .vidioc_s_fmt_vid_out_mplane    = fdp1_s_fmt,

        .vidioc_reqbufs         = v4l2_m2m_ioctl_reqbufs,
        .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
        .vidioc_qbuf            = v4l2_m2m_ioctl_qbuf,
        .vidioc_dqbuf           = v4l2_m2m_ioctl_dqbuf,
        .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
        .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
        .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,

        .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
        .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,

        .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};

/*
 * Queue operations
 */

static int fdp1_queue_setup(struct vb2_queue *vq,
                                unsigned int *nbuffers, unsigned int *nplanes,
                                unsigned int sizes[],
                                struct device *alloc_ctxs[])
{
        struct fdp1_ctx *ctx = vb2_get_drv_priv(vq);
        struct fdp1_q_data *q_data;
        unsigned int i;

        q_data = get_q_data(ctx, vq->type);

        if (*nplanes) {
                if (*nplanes > FDP1_MAX_PLANES)
                        return -EINVAL;

                return 0;
        }

        *nplanes = q_data->format.num_planes;

        for (i = 0; i < *nplanes; i++)
                sizes[i] = q_data->format.plane_fmt[i].sizeimage;

        return 0;
}

static void fdp1_buf_prepare_field(struct fdp1_q_data *q_data,
                                   struct vb2_v4l2_buffer *vbuf,
                                   unsigned int field_num)
{
        struct fdp1_buffer *buf = to_fdp1_buffer(vbuf);
        struct fdp1_field_buffer *fbuf = &buf->fields[field_num];
        unsigned int num_fields;
        unsigned int i;

        num_fields = V4L2_FIELD_HAS_BOTH(vbuf->field) ? 2 : 1;

        fbuf->vb = vbuf;
        fbuf->last_field = (field_num + 1) == num_fields;

        for (i = 0; i < vbuf->vb2_buf.num_planes; ++i)
                fbuf->addrs[i] = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, i);

        switch (vbuf->field) {
        case V4L2_FIELD_INTERLACED:
                /*
                 * Interlaced means bottom-top for 60Hz TV standards (NTSC) and
                 * top-bottom for 50Hz. As TV standards are not applicable to
                 * the mem-to-mem API, use the height as a heuristic.
                 */
                fbuf->field = (q_data->format.height < 576) == field_num
                            ? V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM;
                break;
        case V4L2_FIELD_INTERLACED_TB:
        case V4L2_FIELD_SEQ_TB:
                fbuf->field = field_num ? V4L2_FIELD_BOTTOM : V4L2_FIELD_TOP;
                break;
        case V4L2_FIELD_INTERLACED_BT:
        case V4L2_FIELD_SEQ_BT:
                fbuf->field = field_num ? V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM;
                break;
        default:
                fbuf->field = vbuf->field;
                break;
        }

        /* Buffer is completed */
        if (!field_num)
                return;

        /* Adjust buffer addresses for second field */
        switch (vbuf->field) {
        case V4L2_FIELD_INTERLACED:
        case V4L2_FIELD_INTERLACED_TB:
        case V4L2_FIELD_INTERLACED_BT:
                for (i = 0; i < vbuf->vb2_buf.num_planes; i++)
                        fbuf->addrs[i] +=
                                (i == 0 ? q_data->stride_y : q_data->stride_c);
                break;
        case V4L2_FIELD_SEQ_TB:
        case V4L2_FIELD_SEQ_BT:
                for (i = 0; i < vbuf->vb2_buf.num_planes; i++)
                        fbuf->addrs[i] += q_data->vsize *
                                (i == 0 ? q_data->stride_y : q_data->stride_c);
                break;
        }
}

static int fdp1_buf_prepare(struct vb2_buffer *vb)
{
        struct fdp1_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
        struct fdp1_q_data *q_data = get_q_data(ctx, vb->vb2_queue->type);
        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
        struct fdp1_buffer *buf = to_fdp1_buffer(vbuf);
        unsigned int i;

        if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
                bool field_valid = true;

                /* Validate the buffer field. */
                switch (q_data->format.field) {
                case V4L2_FIELD_NONE:
                        if (vbuf->field != V4L2_FIELD_NONE)
                                field_valid = false;
                        break;

                case V4L2_FIELD_ALTERNATE:
                        if (vbuf->field != V4L2_FIELD_TOP &&
                            vbuf->field != V4L2_FIELD_BOTTOM)
                                field_valid = false;
                        break;

                case V4L2_FIELD_INTERLACED:
                case V4L2_FIELD_SEQ_TB:
                case V4L2_FIELD_SEQ_BT:
                case V4L2_FIELD_INTERLACED_TB:
                case V4L2_FIELD_INTERLACED_BT:
                        if (vbuf->field != q_data->format.field)
                                field_valid = false;
                        break;
                }

                if (!field_valid) {
                        dprintk(ctx->fdp1,
                                "buffer field %u invalid for format field %u\n",
                                vbuf->field, q_data->format.field);
                        return -EINVAL;
                }
        } else {
                vbuf->field = V4L2_FIELD_NONE;
        }

        /* Validate the planes sizes. */
        for (i = 0; i < q_data->format.num_planes; i++) {
                unsigned long size = q_data->format.plane_fmt[i].sizeimage;

                if (vb2_plane_size(vb, i) < size) {
                        dprintk(ctx->fdp1,
                                "data will not fit into plane [%u/%u] (%lu < %lu)\n",
                                i, q_data->format.num_planes,
                                vb2_plane_size(vb, i), size);
                        return -EINVAL;
                }

                /* We have known size formats all around */
                vb2_set_plane_payload(vb, i, size);
        }

        buf->num_fields = V4L2_FIELD_HAS_BOTH(vbuf->field) ? 2 : 1;
        for (i = 0; i < buf->num_fields; ++i)
                fdp1_buf_prepare_field(q_data, vbuf, i);

        return 0;
}

static void fdp1_buf_queue(struct vb2_buffer *vb)
{
        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
        struct fdp1_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);

        v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
}

static int fdp1_start_streaming(struct vb2_queue *q, unsigned int count)
{
        struct fdp1_ctx *ctx = vb2_get_drv_priv(q);
        struct fdp1_q_data *q_data = get_q_data(ctx, q->type);

        if (V4L2_TYPE_IS_OUTPUT(q->type)) {
                /*
                 * Force our deint_mode when we are progressive,
                 * ignoring any setting on the device from the user,
                 * Otherwise, lock in the requested de-interlace mode.
                 */
                if (q_data->format.field == V4L2_FIELD_NONE)
                        ctx->deint_mode = FDP1_PROGRESSIVE;

                if (ctx->deint_mode == FDP1_ADAPT2D3D) {
                        u32 stride;
                        dma_addr_t smsk_base;
                        const u32 bpp = 2; /* bytes per pixel */

                        stride = round_up(q_data->format.width, 8);

                        ctx->smsk_size = bpp * stride * q_data->vsize;

                        ctx->smsk_cpu = dma_alloc_coherent(ctx->fdp1->dev,
                                ctx->smsk_size, &smsk_base, GFP_KERNEL);

                        if (ctx->smsk_cpu == NULL) {
                                dprintk(ctx->fdp1, "Failed to alloc smsk\n");
                                return -ENOMEM;
                        }

                        ctx->smsk_addr[0] = smsk_base;
                        ctx->smsk_addr[1] = smsk_base + (ctx->smsk_size/2);
                }
        }

        return 0;
}

static void fdp1_stop_streaming(struct vb2_queue *q)
{
        struct fdp1_ctx *ctx = vb2_get_drv_priv(q);
        struct vb2_v4l2_buffer *vbuf;
        unsigned long flags;

        while (1) {
                if (V4L2_TYPE_IS_OUTPUT(q->type))
                        vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
                else
                        vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
                if (vbuf == NULL)
                        break;
                spin_lock_irqsave(&ctx->fdp1->irqlock, flags);
                v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
                spin_unlock_irqrestore(&ctx->fdp1->irqlock, flags);
        }

        /* Empty Output queues */
        if (V4L2_TYPE_IS_OUTPUT(q->type)) {
                /* Empty our internal queues */
                struct fdp1_field_buffer *fbuf;

                /* Free any queued buffers */
                fbuf = fdp1_dequeue_field(ctx);
                while (fbuf != NULL) {
                        fdp1_field_complete(ctx, fbuf);
                        fbuf = fdp1_dequeue_field(ctx);
                }

                /* Free smsk_data */
                if (ctx->smsk_cpu) {
                        dma_free_coherent(ctx->fdp1->dev, ctx->smsk_size,
                                        ctx->smsk_cpu, ctx->smsk_addr[0]);
                        ctx->smsk_addr[0] = ctx->smsk_addr[1] = 0;

                        ctx->smsk_cpu = NULL;
                }

                WARN(!list_empty(&ctx->fields_queue),
                                "Buffer queue not empty");
        } else {
                /* Empty Capture queues (Jobs) */
                struct fdp1_job *job;

                job = get_queued_job(ctx->fdp1);
                while (job) {
                        if (FDP1_DEINT_MODE_USES_PREV(ctx->deint_mode))
                                fdp1_field_complete(ctx, job->previous);
                        else
                                fdp1_field_complete(ctx, job->active);

                        v4l2_m2m_buf_done(job->dst->vb, VB2_BUF_STATE_ERROR);
                        job->dst = NULL;

                        job = get_queued_job(ctx->fdp1);
                }

                /* Free any held buffer in the ctx */
                fdp1_field_complete(ctx, ctx->previous);

                WARN(!list_empty(&ctx->fdp1->queued_job_list),
                                "Queued Job List not empty");

                WARN(!list_empty(&ctx->fdp1->hw_job_list),
                                "HW Job list not empty");
        }
}

static struct vb2_ops fdp1_qops = {
        .queue_setup     = fdp1_queue_setup,
        .buf_prepare     = fdp1_buf_prepare,
        .buf_queue       = fdp1_buf_queue,
        .start_streaming = fdp1_start_streaming,
        .stop_streaming  = fdp1_stop_streaming,
        .wait_prepare    = vb2_ops_wait_prepare,
        .wait_finish     = vb2_ops_wait_finish,
};

static int queue_init(void *priv, struct vb2_queue *src_vq,
                      struct vb2_queue *dst_vq)
{
        struct fdp1_ctx *ctx = priv;
        int ret;

        src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
        src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
        src_vq->drv_priv = ctx;
        src_vq->buf_struct_size = sizeof(struct fdp1_buffer);
        src_vq->ops = &fdp1_qops;
        src_vq->mem_ops = &vb2_dma_contig_memops;
        src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
        src_vq->lock = &ctx->fdp1->dev_mutex;
        src_vq->dev = ctx->fdp1->dev;

        ret = vb2_queue_init(src_vq);
        if (ret)
                return ret;

        dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
        dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
        dst_vq->drv_priv = ctx;
        dst_vq->buf_struct_size = sizeof(struct fdp1_buffer);
        dst_vq->ops = &fdp1_qops;
        dst_vq->mem_ops = &vb2_dma_contig_memops;
        dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
        dst_vq->lock = &ctx->fdp1->dev_mutex;
        dst_vq->dev = ctx->fdp1->dev;

        return vb2_queue_init(dst_vq);
}

/*
 * File operations
 */
static int fdp1_open(struct file *file)
{
        struct fdp1_dev *fdp1 = video_drvdata(file);
        struct v4l2_pix_format_mplane format;
        struct fdp1_ctx *ctx = NULL;
        struct v4l2_ctrl *ctrl;
        int ret = 0;

        if (mutex_lock_interruptible(&fdp1->dev_mutex))
                return -ERESTARTSYS;

        ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
        if (!ctx) {
                ret = -ENOMEM;
                goto done;
        }

        v4l2_fh_init(&ctx->fh, video_devdata(file));
        file->private_data = &ctx->fh;
        ctx->fdp1 = fdp1;

        /* Initialise Queues */
        INIT_LIST_HEAD(&ctx->fields_queue);

        ctx->translen = 1;
        ctx->sequence = 0;

        /* Initialise controls */

        v4l2_ctrl_handler_init(&ctx->hdl, 3);
        v4l2_ctrl_new_std_menu_items(&ctx->hdl, &fdp1_ctrl_ops,
                                     V4L2_CID_DEINTERLACING_MODE,
                                     FDP1_NEXTFIELD, BIT(0), FDP1_FIXED3D,
                                     fdp1_ctrl_deint_menu);

        ctrl = v4l2_ctrl_new_std(&ctx->hdl, &fdp1_ctrl_ops,
                        V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 1, 2, 1, 1);
        if (ctrl)
                ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;

        v4l2_ctrl_new_std(&ctx->hdl, &fdp1_ctrl_ops,
                          V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 255);

        if (ctx->hdl.error) {
                ret = ctx->hdl.error;
                v4l2_ctrl_handler_free(&ctx->hdl);
                goto done;
        }

        ctx->fh.ctrl_handler = &ctx->hdl;
        v4l2_ctrl_handler_setup(&ctx->hdl);

        /* Configure default parameters. */
        memset(&format, 0, sizeof(format));
        fdp1_set_format(ctx, &format, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);

        ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(fdp1->m2m_dev, ctx, &queue_init);

        if (IS_ERR(ctx->fh.m2m_ctx)) {
                ret = PTR_ERR(ctx->fh.m2m_ctx);

                v4l2_ctrl_handler_free(&ctx->hdl);
                kfree(ctx);
                goto done;
        }

        /* Perform any power management required */
        pm_runtime_get_sync(fdp1->dev);

        v4l2_fh_add(&ctx->fh);

        dprintk(fdp1, "Created instance: %p, m2m_ctx: %p\n",
                ctx, ctx->fh.m2m_ctx);

done:
        mutex_unlock(&fdp1->dev_mutex);
        return ret;
}

static int fdp1_release(struct file *file)
{
        struct fdp1_dev *fdp1 = video_drvdata(file);
        struct fdp1_ctx *ctx = fh_to_ctx(file->private_data);

        dprintk(fdp1, "Releasing instance %p\n", ctx);

        v4l2_fh_del(&ctx->fh);
        v4l2_fh_exit(&ctx->fh);
        v4l2_ctrl_handler_free(&ctx->hdl);
        mutex_lock(&fdp1->dev_mutex);
        v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
        mutex_unlock(&fdp1->dev_mutex);
        kfree(ctx);

        pm_runtime_put(fdp1->dev);

        return 0;
}

static const struct v4l2_file_operations fdp1_fops = {
        .owner          = THIS_MODULE,
        .open           = fdp1_open,
        .release        = fdp1_release,
        .poll           = v4l2_m2m_fop_poll,
        .unlocked_ioctl = video_ioctl2,
        .mmap           = v4l2_m2m_fop_mmap,
};

static const struct video_device fdp1_videodev = {
        .name           = DRIVER_NAME,
        .vfl_dir        = VFL_DIR_M2M,
        .fops           = &fdp1_fops,
        .device_caps    = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING,
        .ioctl_ops      = &fdp1_ioctl_ops,
        .minor          = -1,
        .release        = video_device_release_empty,
};

static const struct v4l2_m2m_ops m2m_ops = {
        .device_run     = fdp1_m2m_device_run,
        .job_ready      = fdp1_m2m_job_ready,
        .job_abort      = fdp1_m2m_job_abort,
};

static irqreturn_t fdp1_irq_handler(int irq, void *dev_id)
{
        struct fdp1_dev *fdp1 = dev_id;
        u32 int_status;
        u32 ctl_status;
        u32 vint_cnt;
        u32 cycles;

        int_status = fdp1_read(fdp1, FD1_CTL_IRQSTA);
        cycles = fdp1_read(fdp1, FD1_CTL_VCYCLE_STAT);
        ctl_status = fdp1_read(fdp1, FD1_CTL_STATUS);
        vint_cnt = (ctl_status & FD1_CTL_STATUS_VINT_CNT_MASK) >>
                        FD1_CTL_STATUS_VINT_CNT_SHIFT;

        /* Clear interrupts */
        fdp1_write(fdp1, ~(int_status) & FD1_CTL_IRQ_MASK, FD1_CTL_IRQSTA);

        if (debug >= 2) {
                dprintk(fdp1, "IRQ: 0x%x %s%s%s\n", int_status,
                        int_status & FD1_CTL_IRQ_VERE ? "[Error]" : "[!E]",
                        int_status & FD1_CTL_IRQ_VINTE ? "[VSync]" : "[!V]",
                        int_status & FD1_CTL_IRQ_FREE ? "[FrameEnd]" : "[!F]");

                dprintk(fdp1, "CycleStatus = %d (%dms)\n",
                        cycles, cycles/(fdp1->clk_rate/1000));

                dprintk(fdp1,
                        "Control Status = 0x%08x : VINT_CNT = %d %s:%s:%s:%s\n",
                        ctl_status, vint_cnt,
                        ctl_status & FD1_CTL_STATUS_SGREGSET ? "RegSet" : "",
                        ctl_status & FD1_CTL_STATUS_SGVERR ? "Vsync Error" : "",
                        ctl_status & FD1_CTL_STATUS_SGFREND ? "FrameEnd" : "",
                        ctl_status & FD1_CTL_STATUS_BSY ? "Busy" : "");
                dprintk(fdp1, "***********************************\n");
        }

        /* Spurious interrupt */
        if (!(FD1_CTL_IRQ_MASK & int_status))
                return IRQ_NONE;

        /* Work completed, release the frame */
        if (FD1_CTL_IRQ_VERE & int_status)
                device_frame_end(fdp1, VB2_BUF_STATE_ERROR);
        else if (FD1_CTL_IRQ_FREE & int_status)
                device_frame_end(fdp1, VB2_BUF_STATE_DONE);

        return IRQ_HANDLED;
}

static int fdp1_probe(struct platform_device *pdev)
{
        struct fdp1_dev *fdp1;
        struct video_device *vfd;
        struct device_node *fcp_node;
        struct resource *res;
        struct clk *clk;
        unsigned int i;

        int ret;
        int hw_version;

        fdp1 = devm_kzalloc(&pdev->dev, sizeof(*fdp1), GFP_KERNEL);
        if (!fdp1)
                return -ENOMEM;

        INIT_LIST_HEAD(&fdp1->free_job_list);
        INIT_LIST_HEAD(&fdp1->queued_job_list);
        INIT_LIST_HEAD(&fdp1->hw_job_list);

        /* Initialise the jobs on the free list */
        for (i = 0; i < ARRAY_SIZE(fdp1->jobs); i++)
                list_add(&fdp1->jobs[i].list, &fdp1->free_job_list);

        mutex_init(&fdp1->dev_mutex);

        spin_lock_init(&fdp1->irqlock);
        spin_lock_init(&fdp1->device_process_lock);
        fdp1->dev = &pdev->dev;
        platform_set_drvdata(pdev, fdp1);

        /* Memory-mapped registers */
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        fdp1->regs = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(fdp1->regs))
                return PTR_ERR(fdp1->regs);

        /* Interrupt service routine registration */
        fdp1->irq = ret = platform_get_irq(pdev, 0);
        if (ret < 0) {
                dev_err(&pdev->dev, "cannot find IRQ\n");
                return ret;
        }

        ret = devm_request_irq(&pdev->dev, fdp1->irq, fdp1_irq_handler, 0,
                               dev_name(&pdev->dev), fdp1);
        if (ret) {
                dev_err(&pdev->dev, "cannot claim IRQ %d\n", fdp1->irq);
                return ret;
        }

        /* FCP */
        fcp_node = of_parse_phandle(pdev->dev.of_node, "renesas,fcp", 0);
        if (fcp_node) {
                fdp1->fcp = rcar_fcp_get(fcp_node);
                of_node_put(fcp_node);
                if (IS_ERR(fdp1->fcp)) {
                        dev_err(&pdev->dev, "FCP not found (%ld)\n",
                                PTR_ERR(fdp1->fcp));
                        return PTR_ERR(fdp1->fcp);
                }
        }

        /* Determine our clock rate */
        clk = clk_get(&pdev->dev, NULL);
        if (IS_ERR(clk))
                return PTR_ERR(clk);

        fdp1->clk_rate = clk_get_rate(clk);
        clk_put(clk);

        /* V4L2 device registration */
        ret = v4l2_device_register(&pdev->dev, &fdp1->v4l2_dev);
        if (ret) {
                v4l2_err(&fdp1->v4l2_dev, "Failed to register video device\n");
                return ret;
        }

        /* M2M registration */
        fdp1->m2m_dev = v4l2_m2m_init(&m2m_ops);
        if (IS_ERR(fdp1->m2m_dev)) {
                v4l2_err(&fdp1->v4l2_dev, "Failed to init mem2mem device\n");
                ret = PTR_ERR(fdp1->m2m_dev);
                goto unreg_dev;
        }

        /* Video registration */
        fdp1->vfd = fdp1_videodev;
        vfd = &fdp1->vfd;
        vfd->lock = &fdp1->dev_mutex;
        vfd->v4l2_dev = &fdp1->v4l2_dev;
        video_set_drvdata(vfd, fdp1);
        strlcpy(vfd->name, fdp1_videodev.name, sizeof(vfd->name));

        ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
        if (ret) {
                v4l2_err(&fdp1->v4l2_dev, "Failed to register video device\n");
                goto release_m2m;
        }

        v4l2_info(&fdp1->v4l2_dev,
                        "Device registered as /dev/video%d\n", vfd->num);

        /* Power up the cells to read HW */
        pm_runtime_enable(&pdev->dev);
        pm_runtime_get_sync(fdp1->dev);

        hw_version = fdp1_read(fdp1, FD1_IP_INTDATA);
        switch (hw_version) {
        case FD1_IP_H3:
                dprintk(fdp1, "FDP1 Version R-Car H3\n");
                break;
        case FD1_IP_M3W:
                dprintk(fdp1, "FDP1 Version R-Car M3-W\n");
                break;
        default:
                dev_err(fdp1->dev, "FDP1 Unidentifiable (0x%08x)\n",
                                hw_version);
        }

        /* Allow the hw to sleep until an open call puts it to use */
        pm_runtime_put(fdp1->dev);

        return 0;

release_m2m:
        v4l2_m2m_release(fdp1->m2m_dev);

unreg_dev:
        v4l2_device_unregister(&fdp1->v4l2_dev);

        return ret;
}

static int fdp1_remove(struct platform_device *pdev)
{
        struct fdp1_dev *fdp1 = platform_get_drvdata(pdev);

        v4l2_m2m_release(fdp1->m2m_dev);
        video_unregister_device(&fdp1->vfd);
        v4l2_device_unregister(&fdp1->v4l2_dev);
        pm_runtime_disable(&pdev->dev);

        return 0;
}

static int __maybe_unused fdp1_pm_runtime_suspend(struct device *dev)
{
        struct fdp1_dev *fdp1 = dev_get_drvdata(dev);

        rcar_fcp_disable(fdp1->fcp);

        return 0;
}

static int __maybe_unused fdp1_pm_runtime_resume(struct device *dev)
{
        struct fdp1_dev *fdp1 = dev_get_drvdata(dev);

        /* Program in the static LUTs */
        fdp1_set_lut(fdp1);

        return rcar_fcp_enable(fdp1->fcp);
}

static const struct dev_pm_ops fdp1_pm_ops = {
        SET_RUNTIME_PM_OPS(fdp1_pm_runtime_suspend,
                           fdp1_pm_runtime_resume,
                           NULL)
};

static const struct of_device_id fdp1_dt_ids[] = {
        { .compatible = "renesas,fdp1" },
        { },
};
MODULE_DEVICE_TABLE(of, fdp1_dt_ids);

static struct platform_driver fdp1_pdrv = {
        .probe          = fdp1_probe,
        .remove         = fdp1_remove,
        .driver         = {
                .name   = DRIVER_NAME,
                .of_match_table = fdp1_dt_ids,
                .pm     = &fdp1_pm_ops,
        },
};

module_platform_driver(fdp1_pdrv);

MODULE_DESCRIPTION("Renesas R-Car Fine Display Processor Driver");
MODULE_AUTHOR("Kieran Bingham <kieran@bingham.xyz>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRIVER_NAME);