// SPDX-License-Identifier: GPL-2.0
//
// tvp5150 - Texas Instruments TVP5150A/AM1 and TVP5151 video decoder driver
//
// Copyright (c) 2005,2006 Mauro Carvalho Chehab <mchehab@kernel.org>

#include <dt-bindings/media/tvp5150.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/of_graph.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-mc.h>
#include <media/v4l2-rect.h>

#include "tvp5150_reg.h"

#define TVP5150_H_MAX           720U
#define TVP5150_V_MAX_525_60    480U
#define TVP5150_V_MAX_OTHERS    576U
#define TVP5150_MAX_CROP_LEFT   511
#define TVP5150_MAX_CROP_TOP    127
#define TVP5150_CROP_SHIFT      2
#define TVP5150_MBUS_FMT        MEDIA_BUS_FMT_UYVY8_2X8
#define TVP5150_FIELD           V4L2_FIELD_ALTERNATE
#define TVP5150_COLORSPACE      V4L2_COLORSPACE_SMPTE170M
#define TVP5150_STD_MASK        (V4L2_STD_NTSC     | \
                                 V4L2_STD_NTSC_443 | \
                                 V4L2_STD_PAL      | \
                                 V4L2_STD_PAL_M    | \
                                 V4L2_STD_PAL_N    | \
                                 V4L2_STD_PAL_Nc   | \
                                 V4L2_STD_SECAM)

#define TVP5150_MAX_CONNECTORS  3 /* Check dt-bindings for more information */

MODULE_DESCRIPTION("Texas Instruments TVP5150A/TVP5150AM1/TVP5151 video decoder driver");
MODULE_AUTHOR("Mauro Carvalho Chehab");
MODULE_LICENSE("GPL v2");


static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-2)");

#define dprintk0(__dev, __arg...) dev_dbg_lvl(__dev, 0, 0, __arg)

enum tvp5150_pads {
        TVP5150_PAD_AIP1A,
        TVP5150_PAD_AIP1B,
        TVP5150_PAD_VID_OUT,
        TVP5150_NUM_PADS
};

struct tvp5150_connector {
        struct v4l2_fwnode_connector base;
        struct media_entity ent;
        struct media_pad pad;
};

struct tvp5150 {
        struct v4l2_subdev sd;

        struct media_pad pads[TVP5150_NUM_PADS];
        struct tvp5150_connector connectors[TVP5150_MAX_CONNECTORS];
        struct tvp5150_connector *cur_connector;
        unsigned int connectors_num;

        struct v4l2_ctrl_handler hdl;
        struct v4l2_rect rect;
        struct regmap *regmap;
        int irq;

        v4l2_std_id norm;       /* Current set standard */
        v4l2_std_id detected_norm;
        u32 input;
        u32 output;
        u32 oe;
        int enable;
        bool lock;

        u16 dev_id;
        u16 rom_ver;

        enum v4l2_mbus_type mbus_type;
};

static inline struct tvp5150 *to_tvp5150(struct v4l2_subdev *sd)
{
        return container_of(sd, struct tvp5150, sd);
}

static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
        return &container_of(ctrl->handler, struct tvp5150, hdl)->sd;
}

static int tvp5150_read(struct v4l2_subdev *sd, unsigned char addr)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        int ret, val;

        ret = regmap_read(decoder->regmap, addr, &val);
        if (ret < 0)
                return ret;

        return val;
}

static void dump_reg_range(struct v4l2_subdev *sd, char *s, u8 init,
                                const u8 end, int max_line)
{
        u8 buf[16];
        int i = 0, j, len;

        if (max_line > 16) {
                dprintk0(sd->dev, "too much data to dump\n");
                return;
        }

        for (i = init; i < end; i += max_line) {
                len = (end - i > max_line) ? max_line : end - i;

                for (j = 0; j < len; j++)
                        buf[j] = tvp5150_read(sd, i + j);

                dprintk0(sd->dev, "%s reg %02x = %*ph\n", s, i, len, buf);
        }
}

static int tvp5150_log_status(struct v4l2_subdev *sd)
{
        dprintk0(sd->dev, "tvp5150: Video input source selection #1 = 0x%02x\n",
                tvp5150_read(sd, TVP5150_VD_IN_SRC_SEL_1));
        dprintk0(sd->dev, "tvp5150: Analog channel controls = 0x%02x\n",
                tvp5150_read(sd, TVP5150_ANAL_CHL_CTL));
        dprintk0(sd->dev, "tvp5150: Operation mode controls = 0x%02x\n",
                tvp5150_read(sd, TVP5150_OP_MODE_CTL));
        dprintk0(sd->dev, "tvp5150: Miscellaneous controls = 0x%02x\n",
                tvp5150_read(sd, TVP5150_MISC_CTL));
        dprintk0(sd->dev, "tvp5150: Autoswitch mask= 0x%02x\n",
                tvp5150_read(sd, TVP5150_AUTOSW_MSK));
        dprintk0(sd->dev, "tvp5150: Color killer threshold control = 0x%02x\n",
                tvp5150_read(sd, TVP5150_COLOR_KIL_THSH_CTL));
        dprintk0(sd->dev, "tvp5150: Luminance processing controls #1 #2 and #3 = %02x %02x %02x\n",
                tvp5150_read(sd, TVP5150_LUMA_PROC_CTL_1),
                tvp5150_read(sd, TVP5150_LUMA_PROC_CTL_2),
                tvp5150_read(sd, TVP5150_LUMA_PROC_CTL_3));
        dprintk0(sd->dev, "tvp5150: Brightness control = 0x%02x\n",
                tvp5150_read(sd, TVP5150_BRIGHT_CTL));
        dprintk0(sd->dev, "tvp5150: Color saturation control = 0x%02x\n",
                tvp5150_read(sd, TVP5150_SATURATION_CTL));
        dprintk0(sd->dev, "tvp5150: Hue control = 0x%02x\n",
                tvp5150_read(sd, TVP5150_HUE_CTL));
        dprintk0(sd->dev, "tvp5150: Contrast control = 0x%02x\n",
                tvp5150_read(sd, TVP5150_CONTRAST_CTL));
        dprintk0(sd->dev, "tvp5150: Outputs and data rates select = 0x%02x\n",
                tvp5150_read(sd, TVP5150_DATA_RATE_SEL));
        dprintk0(sd->dev, "tvp5150: Configuration shared pins = 0x%02x\n",
                tvp5150_read(sd, TVP5150_CONF_SHARED_PIN));
        dprintk0(sd->dev, "tvp5150: Active video cropping start = 0x%02x%02x\n",
                tvp5150_read(sd, TVP5150_ACT_VD_CROP_ST_MSB),
                tvp5150_read(sd, TVP5150_ACT_VD_CROP_ST_LSB));
        dprintk0(sd->dev, "tvp5150: Active video cropping stop  = 0x%02x%02x\n",
                tvp5150_read(sd, TVP5150_ACT_VD_CROP_STP_MSB),
                tvp5150_read(sd, TVP5150_ACT_VD_CROP_STP_LSB));
        dprintk0(sd->dev, "tvp5150: Genlock/RTC = 0x%02x\n",
                tvp5150_read(sd, TVP5150_GENLOCK));
        dprintk0(sd->dev, "tvp5150: Horizontal sync start = 0x%02x\n",
                tvp5150_read(sd, TVP5150_HORIZ_SYNC_START));
        dprintk0(sd->dev, "tvp5150: Vertical blanking start = 0x%02x\n",
                tvp5150_read(sd, TVP5150_VERT_BLANKING_START));
        dprintk0(sd->dev, "tvp5150: Vertical blanking stop = 0x%02x\n",
                tvp5150_read(sd, TVP5150_VERT_BLANKING_STOP));
        dprintk0(sd->dev, "tvp5150: Chrominance processing control #1 and #2 = %02x %02x\n",
                tvp5150_read(sd, TVP5150_CHROMA_PROC_CTL_1),
                tvp5150_read(sd, TVP5150_CHROMA_PROC_CTL_2));
        dprintk0(sd->dev, "tvp5150: Interrupt reset register B = 0x%02x\n",
                tvp5150_read(sd, TVP5150_INT_RESET_REG_B));
        dprintk0(sd->dev, "tvp5150: Interrupt enable register B = 0x%02x\n",
                tvp5150_read(sd, TVP5150_INT_ENABLE_REG_B));
        dprintk0(sd->dev, "tvp5150: Interrupt configuration register B = 0x%02x\n",
                tvp5150_read(sd, TVP5150_INTT_CONFIG_REG_B));
        dprintk0(sd->dev, "tvp5150: Video standard = 0x%02x\n",
                tvp5150_read(sd, TVP5150_VIDEO_STD));
        dprintk0(sd->dev, "tvp5150: Chroma gain factor: Cb=0x%02x Cr=0x%02x\n",
                tvp5150_read(sd, TVP5150_CB_GAIN_FACT),
                tvp5150_read(sd, TVP5150_CR_GAIN_FACTOR));
        dprintk0(sd->dev, "tvp5150: Macrovision on counter = 0x%02x\n",
                tvp5150_read(sd, TVP5150_MACROVISION_ON_CTR));
        dprintk0(sd->dev, "tvp5150: Macrovision off counter = 0x%02x\n",
                tvp5150_read(sd, TVP5150_MACROVISION_OFF_CTR));
        dprintk0(sd->dev, "tvp5150: ITU-R BT.656.%d timing(TVP5150AM1 only)\n",
                (tvp5150_read(sd, TVP5150_REV_SELECT) & 1) ? 3 : 4);
        dprintk0(sd->dev, "tvp5150: Device ID = %02x%02x\n",
                tvp5150_read(sd, TVP5150_MSB_DEV_ID),
                tvp5150_read(sd, TVP5150_LSB_DEV_ID));
        dprintk0(sd->dev, "tvp5150: ROM version = (hex) %02x.%02x\n",
                tvp5150_read(sd, TVP5150_ROM_MAJOR_VER),
                tvp5150_read(sd, TVP5150_ROM_MINOR_VER));
        dprintk0(sd->dev, "tvp5150: Vertical line count = 0x%02x%02x\n",
                tvp5150_read(sd, TVP5150_VERT_LN_COUNT_MSB),
                tvp5150_read(sd, TVP5150_VERT_LN_COUNT_LSB));
        dprintk0(sd->dev, "tvp5150: Interrupt status register B = 0x%02x\n",
                tvp5150_read(sd, TVP5150_INT_STATUS_REG_B));
        dprintk0(sd->dev, "tvp5150: Interrupt active register B = 0x%02x\n",
                tvp5150_read(sd, TVP5150_INT_ACTIVE_REG_B));
        dprintk0(sd->dev, "tvp5150: Status regs #1 to #5 = %02x %02x %02x %02x %02x\n",
                tvp5150_read(sd, TVP5150_STATUS_REG_1),
                tvp5150_read(sd, TVP5150_STATUS_REG_2),
                tvp5150_read(sd, TVP5150_STATUS_REG_3),
                tvp5150_read(sd, TVP5150_STATUS_REG_4),
                tvp5150_read(sd, TVP5150_STATUS_REG_5));

        dump_reg_range(sd, "Teletext filter 1",   TVP5150_TELETEXT_FIL1_INI,
                        TVP5150_TELETEXT_FIL1_END, 8);
        dump_reg_range(sd, "Teletext filter 2",   TVP5150_TELETEXT_FIL2_INI,
                        TVP5150_TELETEXT_FIL2_END, 8);

        dprintk0(sd->dev, "tvp5150: Teletext filter enable = 0x%02x\n",
                tvp5150_read(sd, TVP5150_TELETEXT_FIL_ENA));
        dprintk0(sd->dev, "tvp5150: Interrupt status register A = 0x%02x\n",
                tvp5150_read(sd, TVP5150_INT_STATUS_REG_A));
        dprintk0(sd->dev, "tvp5150: Interrupt enable register A = 0x%02x\n",
                tvp5150_read(sd, TVP5150_INT_ENABLE_REG_A));
        dprintk0(sd->dev, "tvp5150: Interrupt configuration = 0x%02x\n",
                tvp5150_read(sd, TVP5150_INT_CONF));
        dprintk0(sd->dev, "tvp5150: VDP status register = 0x%02x\n",
                tvp5150_read(sd, TVP5150_VDP_STATUS_REG));
        dprintk0(sd->dev, "tvp5150: FIFO word count = 0x%02x\n",
                tvp5150_read(sd, TVP5150_FIFO_WORD_COUNT));
        dprintk0(sd->dev, "tvp5150: FIFO interrupt threshold = 0x%02x\n",
                tvp5150_read(sd, TVP5150_FIFO_INT_THRESHOLD));
        dprintk0(sd->dev, "tvp5150: FIFO reset = 0x%02x\n",
                tvp5150_read(sd, TVP5150_FIFO_RESET));
        dprintk0(sd->dev, "tvp5150: Line number interrupt = 0x%02x\n",
                tvp5150_read(sd, TVP5150_LINE_NUMBER_INT));
        dprintk0(sd->dev, "tvp5150: Pixel alignment register = 0x%02x%02x\n",
                tvp5150_read(sd, TVP5150_PIX_ALIGN_REG_HIGH),
                tvp5150_read(sd, TVP5150_PIX_ALIGN_REG_LOW));
        dprintk0(sd->dev, "tvp5150: FIFO output control = 0x%02x\n",
                tvp5150_read(sd, TVP5150_FIFO_OUT_CTRL));
        dprintk0(sd->dev, "tvp5150: Full field enable = 0x%02x\n",
                tvp5150_read(sd, TVP5150_FULL_FIELD_ENA));
        dprintk0(sd->dev, "tvp5150: Full field mode register = 0x%02x\n",
                tvp5150_read(sd, TVP5150_FULL_FIELD_MODE_REG));

        dump_reg_range(sd, "CC   data",   TVP5150_CC_DATA_INI,
                        TVP5150_CC_DATA_END, 8);

        dump_reg_range(sd, "WSS  data",   TVP5150_WSS_DATA_INI,
                        TVP5150_WSS_DATA_END, 8);

        dump_reg_range(sd, "VPS  data",   TVP5150_VPS_DATA_INI,
                        TVP5150_VPS_DATA_END, 8);

        dump_reg_range(sd, "VITC data",   TVP5150_VITC_DATA_INI,
                        TVP5150_VITC_DATA_END, 10);

        dump_reg_range(sd, "Line mode",   TVP5150_LINE_MODE_INI,
                        TVP5150_LINE_MODE_END, 8);
        return 0;
}

/****************************************************************************
                        Basic functions
 ****************************************************************************/

static void tvp5150_selmux(struct v4l2_subdev *sd)
{
        int opmode = 0;
        struct tvp5150 *decoder = to_tvp5150(sd);
        unsigned int mask, val;
        int input = 0;

        /* Only tvp5150am1 and tvp5151 have signal generator support */
        if ((decoder->dev_id == 0x5150 && decoder->rom_ver == 0x0400) ||
            (decoder->dev_id == 0x5151 && decoder->rom_ver == 0x0100)) {
                if (!decoder->enable)
                        input = 8;
        }

        switch (decoder->input) {
        case TVP5150_COMPOSITE1:
                input |= 2;
                /* fall through */
        case TVP5150_COMPOSITE0:
                break;
        case TVP5150_SVIDEO:
        default:
                input |= 1;
                break;
        }

        dev_dbg_lvl(sd->dev, 1, debug,
                    "Selecting video route: route input=%s, output=%s => tvp5150 input=0x%02x, opmode=0x%02x\n",
                    decoder->input == 0 ? "aip1a" :
                    decoder->input == 2 ? "aip1b" : "svideo",
                    decoder->output == 0 ? "normal" : "black-frame-gen",
                    input, opmode);

        regmap_write(decoder->regmap, TVP5150_OP_MODE_CTL, opmode);
        regmap_write(decoder->regmap, TVP5150_VD_IN_SRC_SEL_1, input);

        /*
         * Setup the FID/GLCO/VLK/HVLK and INTREQ/GPCL/VBLK output signals. For
         * S-Video we output the vertical lock (VLK) signal on FID/GLCO/VLK/HVLK
         * and set INTREQ/GPCL/VBLK to logic 0. For composite we output the
         * field indicator (FID) signal on FID/GLCO/VLK/HVLK and set
         * INTREQ/GPCL/VBLK to logic 1.
         */
        mask = TVP5150_MISC_CTL_GPCL | TVP5150_MISC_CTL_HVLK;
        if (decoder->input == TVP5150_SVIDEO)
                val = TVP5150_MISC_CTL_HVLK;
        else
                val = TVP5150_MISC_CTL_GPCL;
        regmap_update_bits(decoder->regmap, TVP5150_MISC_CTL, mask, val);
};

struct i2c_reg_value {
        unsigned char reg;
        unsigned char value;
};

/* Default values as sugested at TVP5150AM1 datasheet */
static const struct i2c_reg_value tvp5150_init_default[] = {
        { /* 0x00 */
                TVP5150_VD_IN_SRC_SEL_1, 0x00
        },
        { /* 0x01 */
                TVP5150_ANAL_CHL_CTL, 0x15
        },
        { /* 0x02 */
                TVP5150_OP_MODE_CTL, 0x00
        },
        { /* 0x03 */
                TVP5150_MISC_CTL, 0x01
        },
        { /* 0x06 */
                TVP5150_COLOR_KIL_THSH_CTL, 0x10
        },
        { /* 0x07 */
                TVP5150_LUMA_PROC_CTL_1, 0x60
        },
        { /* 0x08 */
                TVP5150_LUMA_PROC_CTL_2, 0x00
        },
        { /* 0x09 */
                TVP5150_BRIGHT_CTL, 0x80
        },
        { /* 0x0a */
                TVP5150_SATURATION_CTL, 0x80
        },
        { /* 0x0b */
                TVP5150_HUE_CTL, 0x00
        },
        { /* 0x0c */
                TVP5150_CONTRAST_CTL, 0x80
        },
        { /* 0x0d */
                TVP5150_DATA_RATE_SEL, 0x47
        },
        { /* 0x0e */
                TVP5150_LUMA_PROC_CTL_3, 0x00
        },
        { /* 0x0f */
                TVP5150_CONF_SHARED_PIN, 0x08
        },
        { /* 0x11 */
                TVP5150_ACT_VD_CROP_ST_MSB, 0x00
        },
        { /* 0x12 */
                TVP5150_ACT_VD_CROP_ST_LSB, 0x00
        },
        { /* 0x13 */
                TVP5150_ACT_VD_CROP_STP_MSB, 0x00
        },
        { /* 0x14 */
                TVP5150_ACT_VD_CROP_STP_LSB, 0x00
        },
        { /* 0x15 */
                TVP5150_GENLOCK, 0x01
        },
        { /* 0x16 */
                TVP5150_HORIZ_SYNC_START, 0x80
        },
        { /* 0x18 */
                TVP5150_VERT_BLANKING_START, 0x00
        },
        { /* 0x19 */
                TVP5150_VERT_BLANKING_STOP, 0x00
        },
        { /* 0x1a */
                TVP5150_CHROMA_PROC_CTL_1, 0x0c
        },
        { /* 0x1b */
                TVP5150_CHROMA_PROC_CTL_2, 0x14
        },
        { /* 0x1c */
                TVP5150_INT_RESET_REG_B, 0x00
        },
        { /* 0x1d */
                TVP5150_INT_ENABLE_REG_B, 0x00
        },
        { /* 0x1e */
                TVP5150_INTT_CONFIG_REG_B, 0x00
        },
        { /* 0x28 */
                TVP5150_VIDEO_STD, 0x00
        },
        { /* 0x2e */
                TVP5150_MACROVISION_ON_CTR, 0x0f
        },
        { /* 0x2f */
                TVP5150_MACROVISION_OFF_CTR, 0x01
        },
        { /* 0xbb */
                TVP5150_TELETEXT_FIL_ENA, 0x00
        },
        { /* 0xc0 */
                TVP5150_INT_STATUS_REG_A, 0x00
        },
        { /* 0xc1 */
                TVP5150_INT_ENABLE_REG_A, 0x00
        },
        { /* 0xc2 */
                TVP5150_INT_CONF, 0x04
        },
        { /* 0xc8 */
                TVP5150_FIFO_INT_THRESHOLD, 0x80
        },
        { /* 0xc9 */
                TVP5150_FIFO_RESET, 0x00
        },
        { /* 0xca */
                TVP5150_LINE_NUMBER_INT, 0x00
        },
        { /* 0xcb */
                TVP5150_PIX_ALIGN_REG_LOW, 0x4e
        },
        { /* 0xcc */
                TVP5150_PIX_ALIGN_REG_HIGH, 0x00
        },
        { /* 0xcd */
                TVP5150_FIFO_OUT_CTRL, 0x01
        },
        { /* 0xcf */
                TVP5150_FULL_FIELD_ENA, 0x00
        },
        { /* 0xd0 */
                TVP5150_LINE_MODE_INI, 0x00
        },
        { /* 0xfc */
                TVP5150_FULL_FIELD_MODE_REG, 0x7f
        },
        { /* end of data */
                0xff, 0xff
        }
};

/* Default values as sugested at TVP5150AM1 datasheet */
static const struct i2c_reg_value tvp5150_init_enable[] = {
        {       /* Automatic offset and AGC enabled */
                TVP5150_ANAL_CHL_CTL, 0x15
        }, {    /* Activate YCrCb output 0x9 or 0xd ? */
                TVP5150_MISC_CTL, TVP5150_MISC_CTL_GPCL |
                                  TVP5150_MISC_CTL_INTREQ_OE |
                                  TVP5150_MISC_CTL_YCBCR_OE |
                                  TVP5150_MISC_CTL_SYNC_OE |
                                  TVP5150_MISC_CTL_VBLANK |
                                  TVP5150_MISC_CTL_CLOCK_OE,
        }, {    /* Activates video std autodetection for all standards */
                TVP5150_AUTOSW_MSK, 0x0
        }, {    /* Default format: 0x47. For 4:2:2: 0x40 */
                TVP5150_DATA_RATE_SEL, 0x47
        }, {
                TVP5150_CHROMA_PROC_CTL_1, 0x0c
        }, {
                TVP5150_CHROMA_PROC_CTL_2, 0x54
        }, {    /* Non documented, but initialized on WinTV USB2 */
                0x27, 0x20
        }, {
                0xff, 0xff
        }
};

struct tvp5150_vbi_type {
        unsigned int vbi_type;
        unsigned int ini_line;
        unsigned int end_line;
        unsigned int by_field :1;
};

struct i2c_vbi_ram_value {
        u16 reg;
        struct tvp5150_vbi_type type;
        unsigned char values[16];
};

/* This struct have the values for each supported VBI Standard
 * by
 tvp5150_vbi_types should follow the same order as vbi_ram_default
 * value 0 means rom position 0x10, value 1 means rom position 0x30
 * and so on. There are 16 possible locations from 0 to 15.
 */

static struct i2c_vbi_ram_value vbi_ram_default[] = {

        /*
         * FIXME: Current api doesn't handle all VBI types, those not
         * yet supported are placed under #if 0
         */
#if 0
        [0] = {0x010, /* Teletext, SECAM, WST System A */
                {V4L2_SLICED_TELETEXT_SECAM, 6, 23, 1},
                { 0xaa, 0xaa, 0xff, 0xff, 0xe7, 0x2e, 0x20, 0x26,
                  0xe6, 0xb4, 0x0e, 0x00, 0x00, 0x00, 0x10, 0x00 }
        },
#endif
        [1] = {0x030, /* Teletext, PAL, WST System B */
                {V4L2_SLICED_TELETEXT_B, 6, 22, 1},
                { 0xaa, 0xaa, 0xff, 0xff, 0x27, 0x2e, 0x20, 0x2b,
                  0xa6, 0x72, 0x10, 0x00, 0x00, 0x00, 0x10, 0x00 }
        },
#if 0
        [2] = {0x050, /* Teletext, PAL, WST System C */
                {V4L2_SLICED_TELETEXT_PAL_C, 6, 22, 1},
                { 0xaa, 0xaa, 0xff, 0xff, 0xe7, 0x2e, 0x20, 0x22,
                  0xa6, 0x98, 0x0d, 0x00, 0x00, 0x00, 0x10, 0x00 }
        },
        [3] = {0x070, /* Teletext, NTSC, WST System B */
                {V4L2_SLICED_TELETEXT_NTSC_B, 10, 21, 1},
                { 0xaa, 0xaa, 0xff, 0xff, 0x27, 0x2e, 0x20, 0x23,
                  0x69, 0x93, 0x0d, 0x00, 0x00, 0x00, 0x10, 0x00 }
        },
        [4] = {0x090, /* Tetetext, NTSC NABTS System C */
                {V4L2_SLICED_TELETEXT_NTSC_C, 10, 21, 1},
                { 0xaa, 0xaa, 0xff, 0xff, 0xe7, 0x2e, 0x20, 0x22,
                  0x69, 0x93, 0x0d, 0x00, 0x00, 0x00, 0x15, 0x00 }
        },
        [5] = {0x0b0, /* Teletext, NTSC-J, NABTS System D */
                {V4L2_SLICED_TELETEXT_NTSC_D, 10, 21, 1},
                { 0xaa, 0xaa, 0xff, 0xff, 0xa7, 0x2e, 0x20, 0x23,
                  0x69, 0x93, 0x0d, 0x00, 0x00, 0x00, 0x10, 0x00 }
        },
        [6] = {0x0d0, /* Closed Caption, PAL/SECAM */
                {V4L2_SLICED_CAPTION_625, 22, 22, 1},
                { 0xaa, 0x2a, 0xff, 0x3f, 0x04, 0x51, 0x6e, 0x02,
                  0xa6, 0x7b, 0x09, 0x00, 0x00, 0x00, 0x27, 0x00 }
        },
#endif
        [7] = {0x0f0, /* Closed Caption, NTSC */
                {V4L2_SLICED_CAPTION_525, 21, 21, 1},
                { 0xaa, 0x2a, 0xff, 0x3f, 0x04, 0x51, 0x6e, 0x02,
                  0x69, 0x8c, 0x09, 0x00, 0x00, 0x00, 0x27, 0x00 }
        },
        [8] = {0x110, /* Wide Screen Signal, PAL/SECAM */
                {V4L2_SLICED_WSS_625, 23, 23, 1},
                { 0x5b, 0x55, 0xc5, 0xff, 0x00, 0x71, 0x6e, 0x42,
                  0xa6, 0xcd, 0x0f, 0x00, 0x00, 0x00, 0x3a, 0x00 }
        },
#if 0
        [9] = {0x130, /* Wide Screen Signal, NTSC C */
                {V4L2_SLICED_WSS_525, 20, 20, 1},
                { 0x38, 0x00, 0x3f, 0x00, 0x00, 0x71, 0x6e, 0x43,
                  0x69, 0x7c, 0x08, 0x00, 0x00, 0x00, 0x39, 0x00 }
        },
        [10] = {0x150, /* Vertical Interval Timecode (VITC), PAL/SECAM */
                {V4l2_SLICED_VITC_625, 6, 22, 0},
                { 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0x6d, 0x49,
                  0xa6, 0x85, 0x08, 0x00, 0x00, 0x00, 0x4c, 0x00 }
        },
        [11] = {0x170, /* Vertical Interval Timecode (VITC), NTSC */
                {V4l2_SLICED_VITC_525, 10, 20, 0},
                { 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0x6d, 0x49,
                  0x69, 0x94, 0x08, 0x00, 0x00, 0x00, 0x4c, 0x00 }
        },
#endif
        [12] = {0x190, /* Video Program System (VPS), PAL */
                {V4L2_SLICED_VPS, 16, 16, 0},
                { 0xaa, 0xaa, 0xff, 0xff, 0xba, 0xce, 0x2b, 0x0d,
                  0xa6, 0xda, 0x0b, 0x00, 0x00, 0x00, 0x60, 0x00 }
        },
        /* 0x1d0 User programmable */
};

static int tvp5150_write_inittab(struct v4l2_subdev *sd,
                                const struct i2c_reg_value *regs)
{
        struct tvp5150 *decoder = to_tvp5150(sd);

        while (regs->reg != 0xff) {
                regmap_write(decoder->regmap, regs->reg, regs->value);
                regs++;
        }
        return 0;
}

static int tvp5150_vdp_init(struct v4l2_subdev *sd)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        struct regmap *map = decoder->regmap;
        unsigned int i;
        int j;

        /* Disable Full Field */
        regmap_write(map, TVP5150_FULL_FIELD_ENA, 0);

        /* Before programming, Line mode should be at 0xff */
        for (i = TVP5150_LINE_MODE_INI; i <= TVP5150_LINE_MODE_END; i++)
                regmap_write(map, i, 0xff);

        /* Load Ram Table */
        for (j = 0; j < ARRAY_SIZE(vbi_ram_default); j++) {
                const struct i2c_vbi_ram_value *regs = &vbi_ram_default[j];

                if (!regs->type.vbi_type)
                        continue;

                regmap_write(map, TVP5150_CONF_RAM_ADDR_HIGH, regs->reg >> 8);
                regmap_write(map, TVP5150_CONF_RAM_ADDR_LOW, regs->reg);

                for (i = 0; i < 16; i++)
                        regmap_write(map, TVP5150_VDP_CONF_RAM_DATA,
                                     regs->values[i]);
        }
        return 0;
}

/* Fills VBI capabilities based on i2c_vbi_ram_value struct */
static int tvp5150_g_sliced_vbi_cap(struct v4l2_subdev *sd,
                                struct v4l2_sliced_vbi_cap *cap)
{
        int line, i;

        dev_dbg_lvl(sd->dev, 1, debug, "g_sliced_vbi_cap\n");
        memset(cap, 0, sizeof(*cap));

        for (i = 0; i < ARRAY_SIZE(vbi_ram_default); i++) {
                const struct i2c_vbi_ram_value *regs = &vbi_ram_default[i];

                if (!regs->type.vbi_type)
                        continue;

                for (line = regs->type.ini_line;
                     line <= regs->type.end_line;
                     line++) {
                        cap->service_lines[0][line] |= regs->type.vbi_type;
                }
                cap->service_set |= regs->type.vbi_type;
        }
        return 0;
}

/* Set vbi processing
 * type - one of tvp5150_vbi_types
 * line - line to gather data
 * fields: bit 0 field1, bit 1, field2
 * flags (default=0xf0) is a bitmask, were set means:
 *      bit 7: enable filtering null bytes on CC
 *      bit 6: send data also to FIFO
 *      bit 5: don't allow data with errors on FIFO
 *      bit 4: enable ECC when possible
 * pix_align = pix alignment:
 *      LSB = field1
 *      MSB = field2
 */
static int tvp5150_set_vbi(struct v4l2_subdev *sd,
                        unsigned int type, u8 flags, int line,
                        const int fields)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        v4l2_std_id std = decoder->norm;
        u8 reg;
        int i, pos = 0;

        if (std == V4L2_STD_ALL) {
                dev_err(sd->dev, "VBI can't be configured without knowing number of lines\n");
                return 0;
        } else if (std & V4L2_STD_625_50) {
                /* Don't follow NTSC Line number convension */
                line += 3;
        }

        if (line < 6 || line > 27)
                return 0;

        for (i = 0; i < ARRAY_SIZE(vbi_ram_default); i++) {
                const struct i2c_vbi_ram_value *regs =  &vbi_ram_default[i];

                if (!regs->type.vbi_type)
                        continue;

                if ((type & regs->type.vbi_type) &&
                    (line >= regs->type.ini_line) &&
                    (line <= regs->type.end_line))
                        break;
                pos++;
        }

        type = pos | (flags & 0xf0);
        reg = ((line - 6) << 1) + TVP5150_LINE_MODE_INI;

        if (fields & 1)
                regmap_write(decoder->regmap, reg, type);

        if (fields & 2)
                regmap_write(decoder->regmap, reg + 1, type);

        return type;
}

static int tvp5150_get_vbi(struct v4l2_subdev *sd, int line)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        v4l2_std_id std = decoder->norm;
        u8 reg;
        int pos, type = 0;
        int i, ret = 0;

        if (std == V4L2_STD_ALL) {
                dev_err(sd->dev, "VBI can't be configured without knowing number of lines\n");
                return 0;
        } else if (std & V4L2_STD_625_50) {
                /* Don't follow NTSC Line number convension */
                line += 3;
        }

        if (line < 6 || line > 27)
                return 0;

        reg = ((line - 6) << 1) + TVP5150_LINE_MODE_INI;

        for (i = 0; i <= 1; i++) {
                ret = tvp5150_read(sd, reg + i);
                if (ret < 0) {
                        dev_err(sd->dev, "%s: failed with error = %d\n",
                                 __func__, ret);
                        return 0;
                }
                pos = ret & 0x0f;
                if (pos < ARRAY_SIZE(vbi_ram_default))
                        type |= vbi_ram_default[pos].type.vbi_type;
        }

        return type;
}

static int tvp5150_set_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        int fmt = 0;

        /* First tests should be against specific std */

        if (std == V4L2_STD_NTSC_443) {
                fmt = VIDEO_STD_NTSC_4_43_BIT;
        } else if (std == V4L2_STD_PAL_M) {
                fmt = VIDEO_STD_PAL_M_BIT;
        } else if (std == V4L2_STD_PAL_N || std == V4L2_STD_PAL_Nc) {
                fmt = VIDEO_STD_PAL_COMBINATION_N_BIT;
        } else {
                /* Then, test against generic ones */
                if (std & V4L2_STD_NTSC)
                        fmt = VIDEO_STD_NTSC_MJ_BIT;
                else if (std & V4L2_STD_PAL)
                        fmt = VIDEO_STD_PAL_BDGHIN_BIT;
                else if (std & V4L2_STD_SECAM)
                        fmt = VIDEO_STD_SECAM_BIT;
        }

        dev_dbg_lvl(sd->dev, 1, debug, "Set video std register to %d.\n", fmt);
        regmap_write(decoder->regmap, TVP5150_VIDEO_STD, fmt);
        return 0;
}

static int tvp5150_g_std(struct v4l2_subdev *sd, v4l2_std_id *std)
{
        struct tvp5150 *decoder = to_tvp5150(sd);

        *std = decoder->norm;

        return 0;
}

static int tvp5150_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        struct tvp5150_connector *cur_con = decoder->cur_connector;
        v4l2_std_id supported_stds;

        if (decoder->norm == std)
                return 0;

        /* In case of no of-connectors are available no limitations are made */
        if (!decoder->connectors_num)
                supported_stds = V4L2_STD_ALL;
        else
                supported_stds = cur_con->base.connector.analog.sdtv_stds;

        /*
         * Check if requested std or group of std's is/are supported by the
         * connector.
         */
        if ((supported_stds & std) == 0)
                return -EINVAL;

        /* Change cropping height limits */
        if (std & V4L2_STD_525_60)
                decoder->rect.height = TVP5150_V_MAX_525_60;
        else
                decoder->rect.height = TVP5150_V_MAX_OTHERS;

        /* Set only the specific supported std in case of group of std's. */
        decoder->norm = supported_stds & std;

        return tvp5150_set_std(sd, std);
}

static v4l2_std_id tvp5150_read_std(struct v4l2_subdev *sd)
{
        int val = tvp5150_read(sd, TVP5150_STATUS_REG_5);

        switch (val & 0x0F) {
        case 0x01:
                return V4L2_STD_NTSC;
        case 0x03:
                return V4L2_STD_PAL;
        case 0x05:
                return V4L2_STD_PAL_M;
        case 0x07:
                return V4L2_STD_PAL_N | V4L2_STD_PAL_Nc;
        case 0x09:
                return V4L2_STD_NTSC_443;
        case 0xb:
                return V4L2_STD_SECAM;
        default:
                return V4L2_STD_UNKNOWN;
        }
}

static int query_lock(struct v4l2_subdev *sd)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        int status;

        if (decoder->irq)
                return decoder->lock;

        regmap_read(decoder->regmap, TVP5150_STATUS_REG_1, &status);

        /* For standard detection, we need the 3 locks */
        return (status & 0x0e) == 0x0e;
}

static int tvp5150_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id)
{
        *std_id = query_lock(sd) ? tvp5150_read_std(sd) : V4L2_STD_UNKNOWN;

        return 0;
}

static const struct v4l2_event tvp5150_ev_fmt = {
        .type = V4L2_EVENT_SOURCE_CHANGE,
        .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
};

static irqreturn_t tvp5150_isr(int irq, void *dev_id)
{
        struct tvp5150 *decoder = dev_id;
        struct regmap *map = decoder->regmap;
        unsigned int mask, active = 0, status = 0;

        mask = TVP5150_MISC_CTL_YCBCR_OE | TVP5150_MISC_CTL_SYNC_OE |
               TVP5150_MISC_CTL_CLOCK_OE;

        regmap_read(map, TVP5150_INT_STATUS_REG_A, &status);
        if (status) {
                regmap_write(map, TVP5150_INT_STATUS_REG_A, status);

                if (status & TVP5150_INT_A_LOCK) {
                        decoder->lock = !!(status & TVP5150_INT_A_LOCK_STATUS);
                        dev_dbg_lvl(decoder->sd.dev, 1, debug,
                                    "sync lo%s signal\n",
                                    decoder->lock ? "ck" : "ss");
                        v4l2_subdev_notify_event(&decoder->sd, &tvp5150_ev_fmt);
                        regmap_update_bits(map, TVP5150_MISC_CTL, mask,
                                           decoder->lock ? decoder->oe : 0);
                }

                return IRQ_HANDLED;
        }

        regmap_read(map, TVP5150_INT_ACTIVE_REG_B, &active);
        if (active) {
                status = 0;
                regmap_read(map, TVP5150_INT_STATUS_REG_B, &status);
                if (status)
                        regmap_write(map, TVP5150_INT_RESET_REG_B, status);
        }

        return IRQ_HANDLED;
}

static int tvp5150_reset(struct v4l2_subdev *sd, u32 val)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        struct regmap *map = decoder->regmap;

        /* Initializes TVP5150 to its default values */
        tvp5150_write_inittab(sd, tvp5150_init_default);

        if (decoder->irq) {
                /* Configure pins: FID, VSYNC, INTREQ, SCLK */
                regmap_write(map, TVP5150_CONF_SHARED_PIN, 0x0);
                /* Set interrupt polarity to active high */
                regmap_write(map, TVP5150_INT_CONF, TVP5150_VDPOE | 0x1);
                regmap_write(map, TVP5150_INTT_CONFIG_REG_B, 0x1);
        } else {
                /* Configure pins: FID, VSYNC, GPCL/VBLK, SCLK */
                regmap_write(map, TVP5150_CONF_SHARED_PIN, 0x2);
                /* Keep interrupt polarity active low */
                regmap_write(map, TVP5150_INT_CONF, TVP5150_VDPOE);
                regmap_write(map, TVP5150_INTT_CONFIG_REG_B, 0x0);
        }

        /* Initializes VDP registers */
        tvp5150_vdp_init(sd);

        /* Selects decoder input */
        tvp5150_selmux(sd);

        /* Initialize image preferences */
        v4l2_ctrl_handler_setup(&decoder->hdl);

        return 0;
}

static int tvp5150_enable(struct v4l2_subdev *sd)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        v4l2_std_id std;

        /* Initializes TVP5150 to stream enabled values */
        tvp5150_write_inittab(sd, tvp5150_init_enable);

        if (decoder->norm == V4L2_STD_ALL)
                std = tvp5150_read_std(sd);
        else
                std = decoder->norm;

        /* Disable autoswitch mode */
        tvp5150_set_std(sd, std);

        /*
         * Enable the YCbCr and clock outputs. In discrete sync mode
         * (non-BT.656) additionally enable the the sync outputs.
         */
        switch (decoder->mbus_type) {
        case V4L2_MBUS_PARALLEL:
                /* 8-bit 4:2:2 YUV with discrete sync output */
                regmap_update_bits(decoder->regmap, TVP5150_DATA_RATE_SEL,
                                   0x7, 0x0);
                decoder->oe = TVP5150_MISC_CTL_YCBCR_OE |
                              TVP5150_MISC_CTL_CLOCK_OE |
                              TVP5150_MISC_CTL_SYNC_OE;
                break;
        case V4L2_MBUS_BT656:
                decoder->oe = TVP5150_MISC_CTL_YCBCR_OE |
                              TVP5150_MISC_CTL_CLOCK_OE;
                break;
        default:
                return -EINVAL;
        }

        return 0;
};

static int tvp5150_s_ctrl(struct v4l2_ctrl *ctrl)
{
        struct v4l2_subdev *sd = to_sd(ctrl);
        struct tvp5150 *decoder = to_tvp5150(sd);

        switch (ctrl->id) {
        case V4L2_CID_BRIGHTNESS:
                regmap_write(decoder->regmap, TVP5150_BRIGHT_CTL, ctrl->val);
                return 0;
        case V4L2_CID_CONTRAST:
                regmap_write(decoder->regmap, TVP5150_CONTRAST_CTL, ctrl->val);
                return 0;

        case V4L2_CID_SATURATION:
                regmap_write(decoder->regmap, TVP5150_SATURATION_CTL,
                             ctrl->val);
                return 0;
        case V4L2_CID_HUE:
                regmap_write(decoder->regmap, TVP5150_HUE_CTL, ctrl->val);
                return 0;
        case V4L2_CID_TEST_PATTERN:
                decoder->enable = ctrl->val ? false : true;
                tvp5150_selmux(sd);
                return 0;
        }
        return -EINVAL;
}

static void tvp5150_set_default(v4l2_std_id std, struct v4l2_rect *crop)
{
        /* Default is no cropping */
        crop->top = 0;
        crop->left = 0;
        crop->width = TVP5150_H_MAX;
        if (std & V4L2_STD_525_60)
                crop->height = TVP5150_V_MAX_525_60;
        else
                crop->height = TVP5150_V_MAX_OTHERS;
}

static struct v4l2_rect *
tvp5150_get_pad_crop(struct tvp5150 *decoder,
                     struct v4l2_subdev_pad_config *cfg, unsigned int pad,
                     enum v4l2_subdev_format_whence which)
{
        switch (which) {
        case V4L2_SUBDEV_FORMAT_ACTIVE:
                return &decoder->rect;
        case V4L2_SUBDEV_FORMAT_TRY:
#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
                return v4l2_subdev_get_try_crop(&decoder->sd, cfg, pad);
#else
                return ERR_PTR(-EINVAL);
#endif
        default:
                return ERR_PTR(-EINVAL);
        }
}

static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
                            struct v4l2_subdev_pad_config *cfg,
                            struct v4l2_subdev_format *format)
{
        struct v4l2_mbus_framefmt *f;
        struct tvp5150 *decoder = to_tvp5150(sd);

        if (!format || (format->pad != TVP5150_PAD_VID_OUT))
                return -EINVAL;

        f = &format->format;

        f->width = decoder->rect.width;
        f->height = decoder->rect.height / 2;

        f->code = TVP5150_MBUS_FMT;
        f->field = TVP5150_FIELD;
        f->colorspace = TVP5150_COLORSPACE;

        dev_dbg_lvl(sd->dev, 1, debug, "width = %d, height = %d\n", f->width,
                    f->height);
        return 0;
}

static unsigned int tvp5150_get_hmax(struct v4l2_subdev *sd)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        v4l2_std_id std;

        /* Calculate height based on current standard */
        if (decoder->norm == V4L2_STD_ALL)
                std = tvp5150_read_std(sd);
        else
                std = decoder->norm;

        return (std & V4L2_STD_525_60) ?
                TVP5150_V_MAX_525_60 : TVP5150_V_MAX_OTHERS;
}

static void tvp5150_set_hw_selection(struct v4l2_subdev *sd,
                                     struct v4l2_rect *rect)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        unsigned int hmax = tvp5150_get_hmax(sd);

        regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect->top);
        regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
                     rect->top + rect->height - hmax);
        regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
                     rect->left >> TVP5150_CROP_SHIFT);
        regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
                     rect->left | (1 << TVP5150_CROP_SHIFT));
        regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
                     (rect->left + rect->width - TVP5150_MAX_CROP_LEFT) >>
                     TVP5150_CROP_SHIFT);
        regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
                     rect->left + rect->width - TVP5150_MAX_CROP_LEFT);
}

static int tvp5150_set_selection(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_pad_config *cfg,
                                 struct v4l2_subdev_selection *sel)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        struct v4l2_rect *rect = &sel->r;
        struct v4l2_rect *crop;
        unsigned int hmax;

        if (sel->target != V4L2_SEL_TGT_CROP)
                return -EINVAL;

        dev_dbg_lvl(sd->dev, 1, debug, "%s left=%d, top=%d, width=%d, height=%d\n",
                __func__, rect->left, rect->top, rect->width, rect->height);

        /* tvp5150 has some special limits */
        rect->left = clamp(rect->left, 0, TVP5150_MAX_CROP_LEFT);
        rect->top = clamp(rect->top, 0, TVP5150_MAX_CROP_TOP);
        hmax = tvp5150_get_hmax(sd);

        /*
         * alignments:
         *  - width = 2 due to UYVY colorspace
         *  - height, image = no special alignment
         */
        v4l_bound_align_image(&rect->width,
                              TVP5150_H_MAX - TVP5150_MAX_CROP_LEFT - rect->left,
                              TVP5150_H_MAX - rect->left, 1, &rect->height,
                              hmax - TVP5150_MAX_CROP_TOP - rect->top,
                              hmax - rect->top, 0, 0);

        if (!IS_ENABLED(CONFIG_VIDEO_V4L2_SUBDEV_API) &&
            sel->which == V4L2_SUBDEV_FORMAT_TRY)
                return 0;

        crop = tvp5150_get_pad_crop(decoder, cfg, sel->pad, sel->which);
        if (IS_ERR(crop))
                return PTR_ERR(crop);

        /*
         * Update output image size if the selection (crop) rectangle size or
         * position has been modified.
         */
        if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE &&
            !v4l2_rect_equal(rect, crop))
                tvp5150_set_hw_selection(sd, rect);

        *crop = *rect;

        return 0;
}

static int tvp5150_get_selection(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_pad_config *cfg,
                                 struct v4l2_subdev_selection *sel)
{
        struct tvp5150 *decoder = container_of(sd, struct tvp5150, sd);
        struct v4l2_rect *crop;
        v4l2_std_id std;

        switch (sel->target) {
        case V4L2_SEL_TGT_CROP_BOUNDS:
                sel->r.left = 0;
                sel->r.top = 0;
                sel->r.width = TVP5150_H_MAX;

                /* Calculate height based on current standard */
                if (decoder->norm == V4L2_STD_ALL)
                        std = tvp5150_read_std(sd);
                else
                        std = decoder->norm;
                if (std & V4L2_STD_525_60)
                        sel->r.height = TVP5150_V_MAX_525_60;
                else
                        sel->r.height = TVP5150_V_MAX_OTHERS;
                return 0;
        case V4L2_SEL_TGT_CROP:
                crop = tvp5150_get_pad_crop(decoder, cfg, sel->pad,
                                            sel->which);
                if (IS_ERR(crop))
                        return PTR_ERR(crop);
                sel->r = *crop;
                return 0;
        default:
                return -EINVAL;
        }
}

static int tvp5150_g_mbus_config(struct v4l2_subdev *sd,
                                 struct v4l2_mbus_config *cfg)
{
        struct tvp5150 *decoder = to_tvp5150(sd);

        cfg->type = decoder->mbus_type;
        cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING
                   | V4L2_MBUS_FIELD_EVEN_LOW | V4L2_MBUS_DATA_ACTIVE_HIGH;

        return 0;
}

/****************************************************************************
                        V4L2 subdev pad ops
 ****************************************************************************/
static int tvp5150_init_cfg(struct v4l2_subdev *sd,
                            struct v4l2_subdev_pad_config *cfg)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        v4l2_std_id std;

        /*
         * Reset selection to maximum on subdev_open() if autodetection is on
         * and a standard change is detected.
         */
        if (decoder->norm == V4L2_STD_ALL) {
                std = tvp5150_read_std(sd);
                if (std != decoder->detected_norm) {
                        decoder->detected_norm = std;
                        tvp5150_set_default(std, &decoder->rect);
                }
        }

        return 0;
}

static int tvp5150_enum_mbus_code(struct v4l2_subdev *sd,
                struct v4l2_subdev_pad_config *cfg,
                struct v4l2_subdev_mbus_code_enum *code)
{
        if (code->pad || code->index)
                return -EINVAL;

        code->code = TVP5150_MBUS_FMT;
        return 0;
}

static int tvp5150_enum_frame_size(struct v4l2_subdev *sd,
                                   struct v4l2_subdev_pad_config *cfg,
                                   struct v4l2_subdev_frame_size_enum *fse)
{
        struct tvp5150 *decoder = to_tvp5150(sd);

        if (fse->index >= 8 || fse->code != TVP5150_MBUS_FMT)
                return -EINVAL;

        fse->code = TVP5150_MBUS_FMT;
        fse->min_width = decoder->rect.width;
        fse->max_width = decoder->rect.width;
        fse->min_height = decoder->rect.height / 2;
        fse->max_height = decoder->rect.height / 2;

        return 0;
}

/****************************************************************************
 *                      Media entity ops
 ****************************************************************************/
#if defined(CONFIG_MEDIA_CONTROLLER)
static int tvp5150_set_link(struct media_pad *connector_pad,
                            struct media_pad *tvp5150_pad, u32 flags)
{
        struct media_link *link;

        link = media_entity_find_link(connector_pad, tvp5150_pad);
        if (!link)
                return -EINVAL;

        link->flags = flags;
        link->reverse->flags = link->flags;

        return 0;
}

static int tvp5150_disable_all_input_links(struct tvp5150 *decoder)
{
        struct media_pad *connector_pad;
        unsigned int i;
        int err;

        for (i = 0; i < TVP5150_NUM_PADS - 1; i++) {
                connector_pad = media_entity_remote_pad(&decoder->pads[i]);
                if (!connector_pad)
                        continue;

                err = tvp5150_set_link(connector_pad, &decoder->pads[i], 0);
                if (err)
                        return err;
        }

        return 0;
}

static int tvp5150_s_routing(struct v4l2_subdev *sd, u32 input, u32 output,
                             u32 config);

static int tvp5150_link_setup(struct media_entity *entity,
                              const struct media_pad *tvp5150_pad,
                              const struct media_pad *remote, u32 flags)
{
        struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
        struct tvp5150 *decoder = to_tvp5150(sd);
        struct media_pad *other_tvp5150_pad =
                &decoder->pads[tvp5150_pad->index ^ 1];
        struct v4l2_fwnode_connector *v4l2c;
        bool is_svideo = false;
        unsigned int i;
        int err;

        /*
         * The TVP5150 state is determined by the enabled sink pad link(s).
         * Enabling or disabling the source pad link has no effect.
         */
        if (tvp5150_pad->flags & MEDIA_PAD_FL_SOURCE)
                return 0;

        /* Check if the svideo connector should be enabled */
        for (i = 0; i < decoder->connectors_num; i++) {
                if (remote->entity == &decoder->connectors[i].ent) {
                        v4l2c = &decoder->connectors[i].base;
                        is_svideo = v4l2c->type == V4L2_CONN_SVIDEO;
                        break;
                }
        }

        dev_dbg_lvl(sd->dev, 1, debug, "link setup '%s':%d->'%s':%d[%d]",
                    remote->entity->name, remote->index,
                    tvp5150_pad->entity->name, tvp5150_pad->index,
                    flags & MEDIA_LNK_FL_ENABLED);
        if (is_svideo)
                dev_dbg_lvl(sd->dev, 1, debug,
                            "link setup '%s':%d->'%s':%d[%d]",
                            remote->entity->name, remote->index,
                            other_tvp5150_pad->entity->name,
                            other_tvp5150_pad->index,
                            flags & MEDIA_LNK_FL_ENABLED);

        /*
         * The TVP5150 has an internal mux which allows the following setup:
         *
         * comp-connector1  --\
         *                     |---> AIP1A
         *                    /
         * svideo-connector -|
         *                    \
         *                     |---> AIP1B
         * comp-connector2  --/
         *
         * We can't rely on user space that the current connector gets disabled
         * first before enabling the new connector. Disable all active
         * connector links to be on the safe side.
         */
        err = tvp5150_disable_all_input_links(decoder);
        if (err)
                return err;

        tvp5150_s_routing(sd, is_svideo ? TVP5150_SVIDEO : tvp5150_pad->index,
                          flags & MEDIA_LNK_FL_ENABLED ? TVP5150_NORMAL :
                          TVP5150_BLACK_SCREEN, 0);

        if (flags & MEDIA_LNK_FL_ENABLED) {
                struct v4l2_fwnode_connector_analog *v4l2ca;
                u32 new_norm;

                /*
                 * S-Video connector is conneted to both ports AIP1A and AIP1B.
                 * Both links must be enabled in one-shot regardless which link
                 * the user requests.
                 */
                if (is_svideo) {
                        err = tvp5150_set_link((struct media_pad *)remote,
                                               other_tvp5150_pad, flags);
                        if (err)
                                return err;
                }

                if (!decoder->connectors_num)
                        return 0;

                /* Update the current connector */
                decoder->cur_connector =
                        container_of(remote, struct tvp5150_connector, pad);

                /*
                 * Do nothing if the new connector supports the same tv-norms as
                 * the old one.
                 */
                v4l2ca = &decoder->cur_connector->base.connector.analog;
                new_norm = decoder->norm & v4l2ca->sdtv_stds;
                if (decoder->norm == new_norm)
                        return 0;

                /*
                 * Fallback to the new connector tv-norms if we can't find any
                 * common between the current tv-norm and the new one.
                 */
                tvp5150_s_std(sd, new_norm ? new_norm : v4l2ca->sdtv_stds);
        }

        return 0;
}

static const struct media_entity_operations tvp5150_sd_media_ops = {
        .link_setup = tvp5150_link_setup,
};
#endif
/****************************************************************************
                        I2C Command
 ****************************************************************************/
static int __maybe_unused tvp5150_runtime_suspend(struct device *dev)
{
        struct i2c_client *client = to_i2c_client(dev);
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
        struct tvp5150 *decoder = to_tvp5150(sd);

        if (decoder->irq)
                /* Disable lock interrupt */
                return regmap_update_bits(decoder->regmap,
                                          TVP5150_INT_ENABLE_REG_A,
                                          TVP5150_INT_A_LOCK, 0);
        return 0;
}

static int __maybe_unused tvp5150_runtime_resume(struct device *dev)
{
        struct i2c_client *client = to_i2c_client(dev);
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
        struct tvp5150 *decoder = to_tvp5150(sd);

        if (decoder->irq)
                /* Enable lock interrupt */
                return regmap_update_bits(decoder->regmap,
                                          TVP5150_INT_ENABLE_REG_A,
                                          TVP5150_INT_A_LOCK,
                                          TVP5150_INT_A_LOCK);
        return 0;
}

static int tvp5150_s_stream(struct v4l2_subdev *sd, int enable)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        unsigned int mask, val = 0;
        int ret;

        mask = TVP5150_MISC_CTL_YCBCR_OE | TVP5150_MISC_CTL_SYNC_OE |
               TVP5150_MISC_CTL_CLOCK_OE;

        if (enable) {
                ret = pm_runtime_get_sync(sd->dev);
                if (ret < 0) {
                        pm_runtime_put_noidle(sd->dev);
                        return ret;
                }

                tvp5150_enable(sd);

                /* Enable outputs if decoder is locked */
                if (decoder->irq)
                        val = decoder->lock ? decoder->oe : 0;
                else
                        val = decoder->oe;

                v4l2_subdev_notify_event(&decoder->sd, &tvp5150_ev_fmt);
        } else {
                pm_runtime_put(sd->dev);
        }

        regmap_update_bits(decoder->regmap, TVP5150_MISC_CTL, mask, val);

        return 0;
}

static int tvp5150_s_routing(struct v4l2_subdev *sd,
                             u32 input, u32 output, u32 config)
{
        struct tvp5150 *decoder = to_tvp5150(sd);

        decoder->input = input;
        decoder->output = output;

        if (output == TVP5150_BLACK_SCREEN)
                decoder->enable = false;
        else
                decoder->enable = true;

        tvp5150_selmux(sd);
        return 0;
}

static int tvp5150_s_raw_fmt(struct v4l2_subdev *sd, struct v4l2_vbi_format *fmt)
{
        struct tvp5150 *decoder = to_tvp5150(sd);

        /*
         * this is for capturing 36 raw vbi lines
         * if there's a way to cut off the beginning 2 vbi lines
         * with the tvp5150 then the vbi line count could be lowered
         * to 17 lines/field again, although I couldn't find a register
         * which could do that cropping
         */

        if (fmt->sample_format == V4L2_PIX_FMT_GREY)
                regmap_write(decoder->regmap, TVP5150_LUMA_PROC_CTL_1, 0x70);
        if (fmt->count[0] == 18 && fmt->count[1] == 18) {
                regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START,
                             0x00);
                regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP, 0x01);
        }
        return 0;
}

static int tvp5150_s_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *svbi)
{
        struct tvp5150 *decoder = to_tvp5150(sd);
        int i;

        if (svbi->service_set != 0) {
                for (i = 0; i <= 23; i++) {
                        svbi->service_lines[1][i] = 0;
                        svbi->service_lines[0][i] =
                                tvp5150_set_vbi(sd, svbi->service_lines[0][i],
                                                0xf0, i, 3);
                }
                /* Enables FIFO */
                regmap_write(decoder->regmap, TVP5150_FIFO_OUT_CTRL, 1);
        } else {
                /* Disables FIFO*/
                regmap_write(decoder->regmap, TVP5150_FIFO_OUT_CTRL, 0);

                /* Disable Full Field */
                regmap_write(decoder->regmap, TVP5150_FULL_FIELD_ENA, 0);

                /* Disable Line modes */
                for (i = TVP5150_LINE_MODE_INI; i <= TVP5150_LINE_MODE_END; i++)
                        regmap_write(decoder->regmap, i, 0xff);
        }
        return 0;
}

static int tvp5150_g_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *svbi)
{
        int i, mask = 0;

        memset(svbi->service_lines, 0, sizeof(svbi->service_lines));

        for (i = 0; i <= 23; i++) {
                svbi->service_lines[0][i] =
                        tvp5150_get_vbi(sd, i);
                mask |= svbi->service_lines[0][i];
        }
        svbi->service_set = mask;
        return 0;
}

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int tvp5150_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
{
        int res;

        res = tvp5150_read(sd, reg->reg & 0xff);
        if (res < 0) {
                dev_err(sd->dev, "%s: failed with error = %d\n", __func__, res);
                return res;
        }

        reg->val = res;
        reg->size = 1;
        return 0;
}

static int tvp5150_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
{
        struct tvp5150 *decoder = to_tvp5150(sd);

        return regmap_write(decoder->regmap, reg->reg & 0xff, reg->val & 0xff);
}
#endif

static int tvp5150_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
                                   struct v4l2_event_subscription *sub)
{
        switch (sub->type) {
        case V4L2_EVENT_SOURCE_CHANGE:
                return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
        case V4L2_EVENT_CTRL:
                return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
        default:
                return -EINVAL;
        }
}

static int tvp5150_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
{
        int status = tvp5150_read(sd, 0x88);

        vt->signal = ((status & 0x04) && (status & 0x02)) ? 0xffff : 0x0;
        return 0;
}

static int tvp5150_registered(struct v4l2_subdev *sd)
{
#if defined(CONFIG_MEDIA_CONTROLLER)
        struct tvp5150 *decoder = to_tvp5150(sd);
        unsigned int i;
        int ret;

        /*
         * Setup connector pads and links. Enable the link to the first
         * available connector per default.
         */
        for (i = 0; i < decoder->connectors_num; i++) {
                struct media_entity *con = &decoder->connectors[i].ent;
                struct media_pad *pad = &decoder->connectors[i].pad;
                struct v4l2_fwnode_connector *v4l2c =
                        &decoder->connectors[i].base;
                struct v4l2_connector_link *link =
                        v4l2_connector_first_link(v4l2c);
                unsigned int port = link->fwnode_link.remote_port;
                unsigned int flags = i ? 0 : MEDIA_LNK_FL_ENABLED;
                bool is_svideo = v4l2c->type == V4L2_CONN_SVIDEO;

                pad->flags = MEDIA_PAD_FL_SOURCE;
                ret = media_entity_pads_init(con, 1, pad);
                if (ret < 0)
                        goto err;

                ret = media_device_register_entity(sd->v4l2_dev->mdev, con);
                if (ret < 0)
                        goto err;

                ret = media_create_pad_link(con, 0, &sd->entity, port, flags);
                if (ret < 0)
                        goto err;

                if (is_svideo) {
                        /*
                         * Check tvp5150_link_setup() comments for more
                         * information.
                         */
                        link = v4l2_connector_last_link(v4l2c);
                        port = link->fwnode_link.remote_port;
                        ret = media_create_pad_link(con, 0, &sd->entity, port,
                                                    flags);
                        if (ret < 0)
                                goto err;
                }

                /* Enable default input. */
                if (flags == MEDIA_LNK_FL_ENABLED) {
                        decoder->input =
                                is_svideo ? TVP5150_SVIDEO :
                                port == 0 ? TVP5150_COMPOSITE0 :
                                TVP5150_COMPOSITE1;

                        tvp5150_selmux(sd);
                        decoder->cur_connector = &decoder->connectors[i];
                        tvp5150_s_std(sd, v4l2c->connector.analog.sdtv_stds);
                }
        }

        return 0;

err:
        for (i = 0; i < decoder->connectors_num; i++) {
                media_device_unregister_entity(&decoder->connectors[i].ent);
                media_entity_cleanup(&decoder->connectors[i].ent);
        }
        return ret;
#endif

        return 0;
}

static int tvp5150_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
        int ret;

        ret = pm_runtime_get_sync(sd->dev);
        if (ret < 0) {
                pm_runtime_put_noidle(sd->dev);
                return ret;
        }

        return 0;
}

static int tvp5150_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
        pm_runtime_put(sd->dev);

        return 0;
}

/* ----------------------------------------------------------------------- */

static const struct v4l2_ctrl_ops tvp5150_ctrl_ops = {
        .s_ctrl = tvp5150_s_ctrl,
};

static const struct v4l2_subdev_core_ops tvp5150_core_ops = {
        .log_status = tvp5150_log_status,
        .reset = tvp5150_reset,
#ifdef CONFIG_VIDEO_ADV_DEBUG
        .g_register = tvp5150_g_register,
        .s_register = tvp5150_s_register,
#endif
        .subscribe_event = tvp5150_subscribe_event,
        .unsubscribe_event = v4l2_event_subdev_unsubscribe,
};

static const struct v4l2_subdev_tuner_ops tvp5150_tuner_ops = {
        .g_tuner = tvp5150_g_tuner,
};

static const struct v4l2_subdev_video_ops tvp5150_video_ops = {
        .s_std = tvp5150_s_std,
        .g_std = tvp5150_g_std,
        .querystd = tvp5150_querystd,
        .s_stream = tvp5150_s_stream,
        .s_routing = tvp5150_s_routing,
        .g_mbus_config = tvp5150_g_mbus_config,
};

static const struct v4l2_subdev_vbi_ops tvp5150_vbi_ops = {
        .g_sliced_vbi_cap = tvp5150_g_sliced_vbi_cap,
        .g_sliced_fmt = tvp5150_g_sliced_fmt,
        .s_sliced_fmt = tvp5150_s_sliced_fmt,
        .s_raw_fmt = tvp5150_s_raw_fmt,
};

static const struct v4l2_subdev_pad_ops tvp5150_pad_ops = {
        .init_cfg = tvp5150_init_cfg,
        .enum_mbus_code = tvp5150_enum_mbus_code,
        .enum_frame_size = tvp5150_enum_frame_size,
        .set_fmt = tvp5150_fill_fmt,
        .get_fmt = tvp5150_fill_fmt,
        .get_selection = tvp5150_get_selection,
        .set_selection = tvp5150_set_selection,
};

static const struct v4l2_subdev_ops tvp5150_ops = {
        .core = &tvp5150_core_ops,
        .tuner = &tvp5150_tuner_ops,
        .video = &tvp5150_video_ops,
        .vbi = &tvp5150_vbi_ops,
        .pad = &tvp5150_pad_ops,
};

static const struct v4l2_subdev_internal_ops tvp5150_internal_ops = {
        .registered = tvp5150_registered,
        .open = tvp5150_open,
        .close = tvp5150_close,
};

/****************************************************************************
                        I2C Client & Driver
 ****************************************************************************/

static const struct regmap_range tvp5150_readable_ranges[] = {
        {
                .range_min = TVP5150_VD_IN_SRC_SEL_1,
                .range_max = TVP5150_AUTOSW_MSK,
        }, {
                .range_min = TVP5150_COLOR_KIL_THSH_CTL,
                .range_max = TVP5150_CONF_SHARED_PIN,
        }, {
                .range_min = TVP5150_ACT_VD_CROP_ST_MSB,
                .range_max = TVP5150_HORIZ_SYNC_START,
        }, {
                .range_min = TVP5150_VERT_BLANKING_START,
                .range_max = TVP5150_INTT_CONFIG_REG_B,
        }, {
                .range_min = TVP5150_VIDEO_STD,
                .range_max = TVP5150_VIDEO_STD,
        }, {
                .range_min = TVP5150_CB_GAIN_FACT,
                .range_max = TVP5150_REV_SELECT,
        }, {
                .range_min = TVP5150_MSB_DEV_ID,
                .range_max = TVP5150_STATUS_REG_5,
        }, {
                .range_min = TVP5150_CC_DATA_INI,
                .range_max = TVP5150_TELETEXT_FIL_ENA,
        }, {
                .range_min = TVP5150_INT_STATUS_REG_A,
                .range_max = TVP5150_FIFO_OUT_CTRL,
        }, {
                .range_min = TVP5150_FULL_FIELD_ENA,
                .range_max = TVP5150_FULL_FIELD_MODE_REG,
        },
};

static bool tvp5150_volatile_reg(struct device *dev, unsigned int reg)
{
        switch (reg) {
        case TVP5150_VERT_LN_COUNT_MSB:
        case TVP5150_VERT_LN_COUNT_LSB:
        case TVP5150_INT_STATUS_REG_A:
        case TVP5150_INT_STATUS_REG_B:
        case TVP5150_INT_ACTIVE_REG_B:
        case TVP5150_STATUS_REG_1:
        case TVP5150_STATUS_REG_2:
        case TVP5150_STATUS_REG_3:
        case TVP5150_STATUS_REG_4:
        case TVP5150_STATUS_REG_5:
        /* CC, WSS, VPS, VITC data? */
        case TVP5150_VBI_FIFO_READ_DATA:
        case TVP5150_VDP_STATUS_REG:
        case TVP5150_FIFO_WORD_COUNT:
                return true;
        default:
                return false;
        }
}

static const struct regmap_access_table tvp5150_readable_table = {
        .yes_ranges = tvp5150_readable_ranges,
        .n_yes_ranges = ARRAY_SIZE(tvp5150_readable_ranges),
};

static struct regmap_config tvp5150_config = {
        .reg_bits = 8,
        .val_bits = 8,
        .max_register = 0xff,

        .cache_type = REGCACHE_RBTREE,

        .rd_table = &tvp5150_readable_table,
        .volatile_reg = tvp5150_volatile_reg,
};

static int tvp5150_detect_version(struct tvp5150 *core)
{
        struct v4l2_subdev *sd = &core->sd;
        struct i2c_client *c = v4l2_get_subdevdata(sd);
        u8 regs[4];
        int res;

        /*
         * Read consequent registers - TVP5150_MSB_DEV_ID, TVP5150_LSB_DEV_ID,
         * TVP5150_ROM_MAJOR_VER, TVP5150_ROM_MINOR_VER
         */
        res = regmap_bulk_read(core->regmap, TVP5150_MSB_DEV_ID, regs, 4);
        if (res < 0) {
                dev_err(&c->dev, "reading ID registers failed: %d\n", res);
                return res;
        }

        core->dev_id = (regs[0] << 8) | regs[1];
        core->rom_ver = (regs[2] << 8) | regs[3];

        dev_info(sd->dev, "tvp%04x (%u.%u) chip found @ 0x%02x (%s)\n",
                  core->dev_id, regs[2], regs[3], c->addr << 1,
                  c->adapter->name);

        if (core->dev_id == 0x5150 && core->rom_ver == 0x0321) {
                dev_info(sd->dev, "tvp5150a detected.\n");
        } else if (core->dev_id == 0x5150 && core->rom_ver == 0x0400) {
                dev_info(sd->dev, "tvp5150am1 detected.\n");

                /* ITU-T BT.656.4 timing */
                regmap_write(core->regmap, TVP5150_REV_SELECT, 0);
        } else if (core->dev_id == 0x5151 && core->rom_ver == 0x0100) {
                dev_info(sd->dev, "tvp5151 detected.\n");
        } else {
                dev_info(sd->dev, "*** unknown tvp%04x chip detected.\n",
                          core->dev_id);
        }

        return 0;
}

static int tvp5150_init(struct i2c_client *c)
{
        struct gpio_desc *pdn_gpio;
        struct gpio_desc *reset_gpio;

        pdn_gpio = devm_gpiod_get_optional(&c->dev, "pdn", GPIOD_OUT_HIGH);
        if (IS_ERR(pdn_gpio))
                return PTR_ERR(pdn_gpio);

        if (pdn_gpio) {
                gpiod_set_value_cansleep(pdn_gpio, 0);
                /* Delay time between power supplies active and reset */
                msleep(20);
        }

        reset_gpio = devm_gpiod_get_optional(&c->dev, "reset", GPIOD_OUT_HIGH);
        if (IS_ERR(reset_gpio))
                return PTR_ERR(reset_gpio);

        if (reset_gpio) {
                /* RESETB pulse duration */
                ndelay(500);
                gpiod_set_value_cansleep(reset_gpio, 0);
                /* Delay time between end of reset to I2C active */
                usleep_range(200, 250);
        }

        return 0;
}

#if defined(CONFIG_MEDIA_CONTROLLER)
static int tvp5150_mc_init(struct tvp5150 *decoder)
{
        struct v4l2_subdev *sd = &decoder->sd;
        unsigned int i;

        sd->entity.ops = &tvp5150_sd_media_ops;
        sd->entity.function = MEDIA_ENT_F_ATV_DECODER;

        for (i = 0; i < TVP5150_NUM_PADS - 1; i++) {
                decoder->pads[i].flags = MEDIA_PAD_FL_SINK;
                decoder->pads[i].sig_type = PAD_SIGNAL_ANALOG;
        }

        decoder->pads[i].flags = MEDIA_PAD_FL_SOURCE;
        decoder->pads[i].sig_type = PAD_SIGNAL_DV;

        return media_entity_pads_init(&sd->entity, TVP5150_NUM_PADS,
                                      decoder->pads);
}

#else /* !defined(CONFIG_MEDIA_CONTROLLER) */

static inline int tvp5150_mc_init(struct tvp5150 *decoder)
{
        return 0;
}
#endif /* defined(CONFIG_MEDIA_CONTROLLER) */

static int tvp5150_validate_connectors(struct tvp5150 *decoder)
{
        struct device *dev = decoder->sd.dev;
        struct tvp5150_connector *tvpc;
        struct v4l2_fwnode_connector *v4l2c;
        unsigned int i;

        if (!decoder->connectors_num) {
                dev_err(dev, "No valid connector found\n");
                return -ENODEV;
        }

        for (i = 0; i < decoder->connectors_num; i++) {
                struct v4l2_connector_link *link0 = NULL;
                struct v4l2_connector_link *link1;

                tvpc = &decoder->connectors[i];
                v4l2c = &tvpc->base;

                if (v4l2c->type == V4L2_CONN_COMPOSITE) {
                        if (v4l2c->nr_of_links != 1) {
                                dev_err(dev, "Composite: connector needs 1 link\n");
                                return -EINVAL;
                        }
                        link0 = v4l2_connector_first_link(v4l2c);
                        if (!link0) {
                                dev_err(dev, "Composite: invalid first link\n");
                                return -EINVAL;
                        }
                        if (link0->fwnode_link.remote_id == 1) {
                                dev_err(dev, "Composite: invalid endpoint id\n");
                                return -EINVAL;
                        }
                }

                if (v4l2c->type == V4L2_CONN_SVIDEO) {
                        if (v4l2c->nr_of_links != 2) {
                                dev_err(dev, "SVideo: connector needs 2 links\n");
                                return -EINVAL;
                        }
                        link0 = v4l2_connector_first_link(v4l2c);
                        if (!link0) {
                                dev_err(dev, "SVideo: invalid first link\n");
                                return -EINVAL;
                        }
                        link1 = v4l2_connector_last_link(v4l2c);
                        if (link0->fwnode_link.remote_port ==
                            link1->fwnode_link.remote_port) {
                                dev_err(dev, "SVideo: invalid link setup\n");
                                return -EINVAL;
                        }
                }

                if (!(v4l2c->connector.analog.sdtv_stds & TVP5150_STD_MASK)) {
                        dev_err(dev, "Unsupported tv-norm on connector %s\n",
                                v4l2c->name);
                        return -EINVAL;
                }
        }

        return 0;
}

static int tvp5150_parse_dt(struct tvp5150 *decoder, struct device_node *np)
{
        struct device *dev = decoder->sd.dev;

        struct v4l2_fwnode_endpoint bus_cfg = {
                .bus_type = V4L2_MBUS_UNKNOWN
        };
        struct device_node *ep_np;
        struct tvp5150_connector *tvpc;
        struct v4l2_fwnode_connector *v4l2c;
        unsigned int flags, ep_num;
        unsigned int i;
        int ret;

        /* At least 1 output and 1 input */
        ep_num = of_graph_get_endpoint_count(np);
        if (ep_num < 2 || ep_num > 5) {
                dev_err(dev, "At least 1 input and 1 output must be connected to the device.\n");
                return -EINVAL;
        }

        /* Layout if all connectors are used:
         *
         * tvp-5150 port@0 (AIP1A)
         *      endpoint@0 -----------> Comp0-Con  port
         *      endpoint@1 --------+--> Svideo-Con port
         * tvp-5150 port@1 (AIP1B) |
         *      endpoint@1 --------+
         *      endpoint@0 -----------> Comp1-Con  port
         * tvp-5150 port@2
         *      endpoint (video bitstream output at YOUT[0-7] parallel bus)
         */
        for_each_endpoint_of_node(np, ep_np) {
                struct fwnode_handle *ep_fwnode = of_fwnode_handle(ep_np);
                unsigned int next_connector = decoder->connectors_num;
                struct of_endpoint ep;

                of_graph_parse_endpoint(ep_np, &ep);
                if (ep.port > 1 || ep.id > 1) {
                        dev_dbg(dev, "Ignore connector on port@%u/ep@%u\n",
                                ep.port, ep.id);
                        continue;
                }

                tvpc = &decoder->connectors[next_connector];
                v4l2c = &tvpc->base;

                if (ep.port == 0 || (ep.port == 1 && ep.id == 0)) {
                        ret = v4l2_fwnode_connector_parse(ep_fwnode, v4l2c);
                        if (ret)
                                goto err_put;
                        ret = v4l2_fwnode_connector_add_link(ep_fwnode, v4l2c);
                        if (ret)
                                goto err_put;
                        decoder->connectors_num++;
                } else {
                        /* Adding the 2nd svideo link */
                        for (i = 0; i < TVP5150_MAX_CONNECTORS; i++) {
                                tvpc = &decoder->connectors[i];
                                v4l2c = &tvpc->base;
                                if (v4l2c->type == V4L2_CONN_SVIDEO)
                                        break;
                        }

                        ret = v4l2_fwnode_connector_add_link(ep_fwnode, v4l2c);
                        if (ret)
                                goto err_put;
                }
        }

        ret = tvp5150_validate_connectors(decoder);
        if (ret)
                goto err_free;

        for (i = 0; i < decoder->connectors_num; i++) {
                tvpc = &decoder->connectors[i];
                v4l2c = &tvpc->base;
                tvpc->ent.flags = MEDIA_ENT_FL_CONNECTOR;
                tvpc->ent.function = v4l2c->type == V4L2_CONN_SVIDEO ?
                        MEDIA_ENT_F_CONN_SVIDEO : MEDIA_ENT_F_CONN_COMPOSITE;
                tvpc->ent.name = devm_kasprintf(dev, GFP_KERNEL, "%s %s",
                                                v4l2c->name, v4l2c->label ?
                                                v4l2c->label : "");
        }

        ep_np = of_graph_get_endpoint_by_regs(np, TVP5150_PAD_VID_OUT, 0);
        if (!ep_np) {
                dev_err(dev, "Error no output endpoint available\n");
                goto err_free;
        }
        ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_np), &bus_cfg);
        of_node_put(ep_np);
        if (ret)
                goto err_free;

        flags = bus_cfg.bus.parallel.flags;
        if (bus_cfg.bus_type == V4L2_MBUS_PARALLEL &&
            !(flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH &&
              flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH &&
              flags & V4L2_MBUS_FIELD_EVEN_LOW)) {
                ret = -EINVAL;
                goto err_free;
        }

        decoder->mbus_type = bus_cfg.bus_type;

        return 0;

err_put:
        of_node_put(ep_np);
err_free:
        for (i = 0; i < TVP5150_MAX_CONNECTORS; i++)
                v4l2_fwnode_connector_free(&decoder->connectors[i].base);

        return ret;
}

static const char * const tvp5150_test_patterns[2] = {
        "Disabled",
        "Black screen"
};

static int tvp5150_probe(struct i2c_client *c)
{
        struct tvp5150 *core;
        struct v4l2_subdev *sd;
        struct device_node *np = c->dev.of_node;
        struct regmap *map;
        unsigned int i;
        int res;

        /* Check if the adapter supports the needed features */
        if (!i2c_check_functionality(c->adapter,
             I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
                return -EIO;

        res = tvp5150_init(c);
        if (res)
                return res;

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

        map = devm_regmap_init_i2c(c, &tvp5150_config);
        if (IS_ERR(map))
                return PTR_ERR(map);

        core->regmap = map;
        sd = &core->sd;
        v4l2_i2c_subdev_init(sd, c, &tvp5150_ops);
        sd->internal_ops = &tvp5150_internal_ops;
        sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;

        if (IS_ENABLED(CONFIG_OF) && np) {
                res = tvp5150_parse_dt(core, np);
                if (res) {
                        dev_err(sd->dev, "DT parsing error: %d\n", res);
                        return res;
                }
        } else {
                /* Default to BT.656 embedded sync */
                core->mbus_type = V4L2_MBUS_BT656;
        }

        res = tvp5150_mc_init(core);
        if (res)
                return res;

        res = tvp5150_detect_version(core);
        if (res < 0)
                return res;

        /*
         * Iterate over all available connectors in case they are supported and
         * successfully parsed. Fallback to default autodetect in case they
         * aren't supported.
         */
        for (i = 0; i < core->connectors_num; i++) {
                struct v4l2_fwnode_connector *v4l2c;

                v4l2c = &core->connectors[i].base;
                core->norm |= v4l2c->connector.analog.sdtv_stds;
        }

        if (!core->connectors_num)
                core->norm = V4L2_STD_ALL;

        core->detected_norm = V4L2_STD_UNKNOWN;
        core->input = TVP5150_COMPOSITE1;
        core->enable = true;

        v4l2_ctrl_handler_init(&core->hdl, 5);
        v4l2_ctrl_new_std(&core->hdl, &tvp5150_ctrl_ops,
                        V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
        v4l2_ctrl_new_std(&core->hdl, &tvp5150_ctrl_ops,
                        V4L2_CID_CONTRAST, 0, 255, 1, 128);
        v4l2_ctrl_new_std(&core->hdl, &tvp5150_ctrl_ops,
                        V4L2_CID_SATURATION, 0, 255, 1, 128);
        v4l2_ctrl_new_std(&core->hdl, &tvp5150_ctrl_ops,
                        V4L2_CID_HUE, -128, 127, 1, 0);
        v4l2_ctrl_new_std(&core->hdl, &tvp5150_ctrl_ops,
                        V4L2_CID_PIXEL_RATE, 27000000,
                        27000000, 1, 27000000);
        v4l2_ctrl_new_std_menu_items(&core->hdl, &tvp5150_ctrl_ops,
                                     V4L2_CID_TEST_PATTERN,
                                     ARRAY_SIZE(tvp5150_test_patterns) - 1,
                                     0, 0, tvp5150_test_patterns);
        sd->ctrl_handler = &core->hdl;
        if (core->hdl.error) {
                res = core->hdl.error;
                goto err;
        }

        tvp5150_set_default(tvp5150_read_std(sd), &core->rect);

        core->irq = c->irq;
        tvp5150_reset(sd, 0);   /* Calls v4l2_ctrl_handler_setup() */
        if (c->irq) {
                res = devm_request_threaded_irq(&c->dev, c->irq, NULL,
                                                tvp5150_isr, IRQF_TRIGGER_HIGH |
                                                IRQF_ONESHOT, "tvp5150", core);
                if (res)
                        goto err;
        }

        res = v4l2_async_register_subdev(sd);
        if (res < 0)
                goto err;

        if (debug > 1)
                tvp5150_log_status(sd);

        pm_runtime_set_active(&c->dev);
        pm_runtime_enable(&c->dev);
        pm_runtime_idle(&c->dev);

        return 0;

err:
        v4l2_ctrl_handler_free(&core->hdl);
        return res;
}

static int tvp5150_remove(struct i2c_client *c)
{
        struct v4l2_subdev *sd = i2c_get_clientdata(c);
        struct tvp5150 *decoder = to_tvp5150(sd);
        unsigned int i;

        dev_dbg_lvl(sd->dev, 1, debug,
                "tvp5150.c: removing tvp5150 adapter on address 0x%x\n",
                c->addr << 1);

        for (i = 0; i < decoder->connectors_num; i++)
                v4l2_fwnode_connector_free(&decoder->connectors[i].base);
        for (i = 0; i < decoder->connectors_num; i++) {
                media_device_unregister_entity(&decoder->connectors[i].ent);
                media_entity_cleanup(&decoder->connectors[i].ent);
        }
        v4l2_async_unregister_subdev(sd);
        v4l2_ctrl_handler_free(&decoder->hdl);
        pm_runtime_disable(&c->dev);
        pm_runtime_set_suspended(&c->dev);

        return 0;
}

/* ----------------------------------------------------------------------- */

static const struct dev_pm_ops tvp5150_pm_ops = {
        SET_RUNTIME_PM_OPS(tvp5150_runtime_suspend,
                           tvp5150_runtime_resume,
                           NULL)
};

static const struct i2c_device_id tvp5150_id[] = {
        { "tvp5150", 0 },
        { }
};
MODULE_DEVICE_TABLE(i2c, tvp5150_id);

#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id tvp5150_of_match[] = {
        { .compatible = "ti,tvp5150", },
        { /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, tvp5150_of_match);
#endif

static struct i2c_driver tvp5150_driver = {
        .driver = {
                .of_match_table = of_match_ptr(tvp5150_of_match),
                .name   = "tvp5150",
                .pm     = &tvp5150_pm_ops,
        },
        .probe_new      = tvp5150_probe,
        .remove         = tvp5150_remove,
        .id_table       = tvp5150_id,
};

module_i2c_driver(tvp5150_driver);