// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Zoran zr36057/zr36067 PCI controller driver, for the
 * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
 * Media Labs LML33/LML33R10.
 *
 * This part handles card-specific data and detection
 *
 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
 */

#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>

#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/videodev2.h>
#include <linux/spinlock.h>

#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <media/v4l2-common.h>
#include <media/i2c/bt819.h>

#include "videocodec.h"
#include "zoran.h"
#include "zoran_card.h"
#include "zoran_device.h"
#include "zr36016.h"
#include "zr36050.h"
#include "zr36060.h"

extern const struct zoran_format zoran_formats[];

static int card[BUZ_MAX] = { [0 ... (BUZ_MAX - 1)] = -1 };
module_param_array(card, int, NULL, 0444);
MODULE_PARM_DESC(card, "Card type");

/* Default input and video norm at startup of the driver. */

static unsigned int default_input;      /* default 0 = Composite, 1 = S-Video */
module_param(default_input, uint, 0444);
MODULE_PARM_DESC(default_input,
                 "Default input (0=Composite, 1=S-Video, 2=Internal)");

static int default_mux = 1;     /* 6 Eyes input selection */
module_param(default_mux, int, 0644);
MODULE_PARM_DESC(default_mux,
                 "Default 6 Eyes mux setting (Input selection)");

static int default_norm;        /* default 0 = PAL, 1 = NTSC 2 = SECAM */
module_param(default_norm, int, 0444);
MODULE_PARM_DESC(default_norm, "Default norm (0=PAL, 1=NTSC, 2=SECAM)");

/* /dev/videoN, -1 for autodetect */
static int video_nr[BUZ_MAX] = { [0 ... (BUZ_MAX - 1)] = -1 };
module_param_array(video_nr, int, NULL, 0444);
MODULE_PARM_DESC(video_nr, "Video device number (-1=Auto)");

/* 1=Pass through TV signal when device is not used */
/* 0=Show color bar when device is not used (LML33: only if lml33dpath=1) */
int pass_through;
module_param(pass_through, int, 0644);
MODULE_PARM_DESC(pass_through,
                 "Pass TV signal through to TV-out when idling");

#define ZORAN_VERSION "0.10.1"

MODULE_DESCRIPTION("Zoran-36057/36067 JPEG codec driver");
MODULE_AUTHOR("Serguei Miridonov");
MODULE_LICENSE("GPL");
MODULE_VERSION(ZORAN_VERSION);

#define ZR_DEVICE(subven, subdev, data) { \
        .vendor = PCI_VENDOR_ID_ZORAN, .device = PCI_DEVICE_ID_ZORAN_36057, \
        .subvendor = (subven), .subdevice = (subdev), .driver_data = (data) }

static const struct pci_device_id zr36067_pci_tbl[] = {
        ZR_DEVICE(PCI_VENDOR_ID_MIRO, PCI_DEVICE_ID_MIRO_DC10PLUS, DC10_PLUS),
        ZR_DEVICE(PCI_VENDOR_ID_MIRO, PCI_DEVICE_ID_MIRO_DC30PLUS, DC30_PLUS),
        ZR_DEVICE(PCI_VENDOR_ID_ELECTRONICDESIGNGMBH, PCI_DEVICE_ID_LML_33R10, LML33R10),
        ZR_DEVICE(PCI_VENDOR_ID_IOMEGA, PCI_DEVICE_ID_IOMEGA_BUZ, BUZ),
        ZR_DEVICE(PCI_ANY_ID, PCI_ANY_ID, NUM_CARDS),
        {0}
};
MODULE_DEVICE_TABLE(pci, zr36067_pci_tbl);

static unsigned int zoran_num;          /* number of cards found */

/* videocodec bus functions ZR36060 */
static u32 zr36060_read(struct videocodec *codec, u16 reg)
{
        struct zoran *zr = (struct zoran *)codec->master_data->data;
        __u32 data;

        if (post_office_wait(zr) || post_office_write(zr, 0, 1, reg >> 8) ||
            post_office_write(zr, 0, 2, reg & 0xff))
                return -1;

        data = post_office_read(zr, 0, 3) & 0xff;
        return data;
}

static void zr36060_write(struct videocodec *codec, u16 reg, u32 val)
{
        struct zoran *zr = (struct zoran *)codec->master_data->data;

        if (post_office_wait(zr) || post_office_write(zr, 0, 1, reg >> 8) ||
            post_office_write(zr, 0, 2, reg & 0xff))
                return;

        post_office_write(zr, 0, 3, val & 0xff);
}

/* videocodec bus functions ZR36050 */
static u32 zr36050_read(struct videocodec *codec, u16 reg)
{
        struct zoran *zr = (struct zoran *)codec->master_data->data;
        __u32 data;

        if (post_office_wait(zr) || post_office_write(zr, 1, 0, reg >> 2))      // reg. HIGHBYTES
                return -1;

        data = post_office_read(zr, 0, reg & 0x03) & 0xff;      // reg. LOWBYTES + read
        return data;
}

static void zr36050_write(struct videocodec *codec, u16 reg, u32 val)
{
        struct zoran *zr = (struct zoran *)codec->master_data->data;

        if (post_office_wait(zr) || post_office_write(zr, 1, 0, reg >> 2))      // reg. HIGHBYTES
                return;

        post_office_write(zr, 0, reg & 0x03, val & 0xff);       // reg. LOWBYTES + wr. data
}

/* videocodec bus functions ZR36016 */
static u32 zr36016_read(struct videocodec *codec, u16 reg)
{
        struct zoran *zr = (struct zoran *)codec->master_data->data;
        __u32 data;

        if (post_office_wait(zr))
                return -1;

        data = post_office_read(zr, 2, reg & 0x03) & 0xff;      // read
        return data;
}

/* hack for in zoran_device.c */
void zr36016_write(struct videocodec *codec, u16 reg, u32 val)
{
        struct zoran *zr = (struct zoran *)codec->master_data->data;

        if (post_office_wait(zr))
                return;

        post_office_write(zr, 2, reg & 0x03, val & 0x0ff);      // wr. data
}

/*
 * Board specific information
 */

static void dc10_init(struct zoran *zr)
{
        /* Pixel clock selection */
        GPIO(zr, 4, 0);
        GPIO(zr, 5, 1);
        /* Enable the video bus sync signals */
        GPIO(zr, 7, 0);
}

static void dc10plus_init(struct zoran *zr)
{
}

static void buz_init(struct zoran *zr)
{
        /* some stuff from Iomega */
        pci_write_config_dword(zr->pci_dev, 0xfc, 0x90680f15);
        pci_write_config_dword(zr->pci_dev, 0x0c, 0x00012020);
        pci_write_config_dword(zr->pci_dev, 0xe8, 0xc0200000);
}

static void lml33_init(struct zoran *zr)
{
        GPIO(zr, 2, 1);         // Set Composite input/output
}

static void avs6eyes_init(struct zoran *zr)
{
        // AverMedia 6-Eyes original driver by Christer Weinigel

        // Lifted straight from Christer's old driver and
        // modified slightly by Martin Samuelsson.

        int mux = default_mux; /* 1 = BT866, 7 = VID1 */

        GPIO(zr, 4, 1); /* Bt866 SLEEP on */
        udelay(2);

        GPIO(zr, 0, 1); /* ZR36060 /RESET on */
        GPIO(zr, 1, 0); /* ZR36060 /SLEEP on */
        GPIO(zr, 2, mux & 1);   /* MUX S0 */
        GPIO(zr, 3, 0); /* /FRAME on */
        GPIO(zr, 4, 0); /* Bt866 SLEEP off */
        GPIO(zr, 5, mux & 2);   /* MUX S1 */
        GPIO(zr, 6, 0); /* ? */
        GPIO(zr, 7, mux & 4);   /* MUX S2 */
}

static const char *codecid_to_modulename(u16 codecid)
{
        const char *name = NULL;

        switch (codecid) {
        case CODEC_TYPE_ZR36060:
                name = "zr36060";
                break;
        case CODEC_TYPE_ZR36050:
                name = "zr36050";
                break;
        case CODEC_TYPE_ZR36016:
                name = "zr36016";
                break;
        }

        return name;
}

static int codec_init(struct zoran *zr, u16 codecid)
{
        switch (codecid) {
        case CODEC_TYPE_ZR36060:
#ifdef CONFIG_VIDEO_ZORAN_ZR36060
                return zr36060_init_module();
#else
                pci_err(zr->pci_dev, "ZR36060 support is not enabled\n");
                return -EINVAL;
#endif
                break;
        case CODEC_TYPE_ZR36050:
#ifdef CONFIG_VIDEO_ZORAN_DC30
                return zr36050_init_module();
#else
                pci_err(zr->pci_dev, "ZR36050 support is not enabled\n");
                return -EINVAL;
#endif
                break;
        case CODEC_TYPE_ZR36016:
#ifdef CONFIG_VIDEO_ZORAN_DC30
                return zr36016_init_module();
#else
                pci_err(zr->pci_dev, "ZR36016 support is not enabled\n");
                return -EINVAL;
#endif
                break;
        }

        pci_err(zr->pci_dev, "unknown codec id %x\n", codecid);
        return -EINVAL;
}

static void codec_exit(struct zoran *zr, u16 codecid)
{
        switch (codecid) {
        case CODEC_TYPE_ZR36060:
#ifdef CONFIG_VIDEO_ZORAN_ZR36060
                zr36060_cleanup_module();
#endif
                break;
        case CODEC_TYPE_ZR36050:
#ifdef CONFIG_VIDEO_ZORAN_DC30
                zr36050_cleanup_module();
#endif
                break;
        case CODEC_TYPE_ZR36016:
#ifdef CONFIG_VIDEO_ZORAN_DC30
                zr36016_cleanup_module();
#endif
                break;
        }
}

static int videocodec_init(struct zoran *zr)
{
        const char *codec_name, *vfe_name;
        int result;

        codec_name = codecid_to_modulename(zr->card.video_codec);
        if (codec_name) {
                result = codec_init(zr, zr->card.video_codec);
                if (result < 0) {
                        pci_err(zr->pci_dev, "failed to load video codec %s: %d\n",
                                codec_name, result);
                        return result;
                }
        }
        vfe_name = codecid_to_modulename(zr->card.video_vfe);
        if (vfe_name) {
                result = codec_init(zr, zr->card.video_vfe);
                if (result < 0) {
                        pci_err(zr->pci_dev, "failed to load video vfe %s: %d\n",
                                vfe_name, result);
                        if (codec_name)
                                codec_exit(zr, zr->card.video_codec);
                        return result;
                }
        }
        return 0;
}

static void videocodec_exit(struct zoran *zr)
{
        if (zr->card.video_codec != CODEC_TYPE_NONE)
                codec_exit(zr, zr->card.video_codec);
        if (zr->card.video_vfe != CODEC_TYPE_NONE)
                codec_exit(zr, zr->card.video_vfe);
}

static const struct tvnorm f50sqpixel = { 944, 768, 83, 880, 625, 576, 16 };
static const struct tvnorm f60sqpixel = { 780, 640, 51, 716, 525, 480, 12 };
static const struct tvnorm f50ccir601 = { 864, 720, 75, 804, 625, 576, 18 };
static const struct tvnorm f60ccir601 = { 858, 720, 57, 788, 525, 480, 16 };

static const struct tvnorm f50ccir601_lml33 = { 864, 720, 75 + 34, 804, 625, 576, 18 };
static const struct tvnorm f60ccir601_lml33 = { 858, 720, 57 + 34, 788, 525, 480, 16 };

/* The DC10 (57/16/50) uses VActive as HSync, so h_start must be 0 */
static const struct tvnorm f50sqpixel_dc10 = { 944, 768, 0, 880, 625, 576, 0 };
static const struct tvnorm f60sqpixel_dc10 = { 780, 640, 0, 716, 525, 480, 12 };

/*
 * FIXME: I cannot swap U and V in saa7114, so i do one pixel left shift in zoran (75 -> 74)
 * (Maxim Yevtyushkin <max@linuxmedialabs.com>)
 */
static const struct tvnorm f50ccir601_lm33r10 = { 864, 720, 74 + 54, 804, 625, 576, 18 };
static const struct tvnorm f60ccir601_lm33r10 = { 858, 720, 56 + 54, 788, 525, 480, 16 };

/*
 * FIXME: The ks0127 seem incapable of swapping U and V, too, which is why I copy Maxim's left
 * shift hack for the 6 Eyes.
 *
 * Christer's driver used the unshifted norms, though...
 * /Sam
 */
static const struct tvnorm f50ccir601_avs6eyes = { 864, 720, 74, 804, 625, 576, 18 };
static const struct tvnorm f60ccir601_avs6eyes = { 858, 720, 56, 788, 525, 480, 16 };

static const unsigned short vpx3220_addrs[] = { 0x43, 0x47, I2C_CLIENT_END };
static const unsigned short saa7110_addrs[] = { 0x4e, 0x4f, I2C_CLIENT_END };
static const unsigned short saa7111_addrs[] = { 0x25, 0x24, I2C_CLIENT_END };
static const unsigned short saa7114_addrs[] = { 0x21, 0x20, I2C_CLIENT_END };
static const unsigned short adv717x_addrs[] = { 0x6a, 0x6b, 0x2a, 0x2b, I2C_CLIENT_END };
static const unsigned short ks0127_addrs[] = { 0x6c, 0x6d, I2C_CLIENT_END };
static const unsigned short saa7185_addrs[] = { 0x44, I2C_CLIENT_END };
static const unsigned short bt819_addrs[] = { 0x45, I2C_CLIENT_END };
static const unsigned short bt856_addrs[] = { 0x44, I2C_CLIENT_END };
static const unsigned short bt866_addrs[] = { 0x44, I2C_CLIENT_END };

static struct card_info zoran_cards[NUM_CARDS] = {
        {
                .type = DC10_OLD,
                .name = "DC10(old)",
                .i2c_decoder = "vpx3220a",
                .addrs_decoder = vpx3220_addrs,
                .video_codec = CODEC_TYPE_ZR36050,
                .video_vfe = CODEC_TYPE_ZR36016,

                .inputs = 3,
                .input = {
                        { 1, "Composite" },
                        { 2, "S-Video" },
                        { 0, "Internal/comp" }
                },
                .norms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
                .tvn = {
                        &f50sqpixel_dc10,
                        &f60sqpixel_dc10,
                        &f50sqpixel_dc10
                },
                .jpeg_int = 0,
                .vsync_int = ZR36057_ISR_GIRQ1,
                .gpio = { 2, 1, -1, 3, 7, 0, 4, 5 },
                .gpio_pol = { 0, 0, 0, 1, 0, 0, 0, 0 },
                .gpcs = { -1, 0 },
                .vfe_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
                .gws_not_connected = 0,
                .input_mux = 0,
                .init = &dc10_init,
        }, {
                .type = DC10_NEW,
                .name = "DC10(new)",
                .i2c_decoder = "saa7110",
                .addrs_decoder = saa7110_addrs,
                .i2c_encoder = "adv7175",
                .addrs_encoder = adv717x_addrs,
                .video_codec = CODEC_TYPE_ZR36060,

                .inputs = 3,
                .input = {
                                { 0, "Composite" },
                                { 7, "S-Video" },
                                { 5, "Internal/comp" }
                        },
                .norms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
                .tvn = {
                                &f50sqpixel,
                                &f60sqpixel,
                                &f50sqpixel},
                .jpeg_int = ZR36057_ISR_GIRQ0,
                .vsync_int = ZR36057_ISR_GIRQ1,
                .gpio = { 3, 0, 6, 1, 2, -1, 4, 5 },
                .gpio_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
                .gpcs = { -1, 1},
                .vfe_pol = { 1, 1, 1, 1, 0, 0, 0, 0 },
                .gws_not_connected = 0,
                .input_mux = 0,
                .init = &dc10plus_init,
        }, {
                .type = DC10_PLUS,
                .name = "DC10_PLUS",
                .i2c_decoder = "saa7110",
                .addrs_decoder = saa7110_addrs,
                .i2c_encoder = "adv7175",
                .addrs_encoder = adv717x_addrs,
                .video_codec = CODEC_TYPE_ZR36060,

                .inputs = 3,
                .input = {
                        { 0, "Composite" },
                        { 7, "S-Video" },
                        { 5, "Internal/comp" }
                },
                .norms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
                .tvn = {
                        &f50sqpixel,
                        &f60sqpixel,
                        &f50sqpixel
                },
                .jpeg_int = ZR36057_ISR_GIRQ0,
                .vsync_int = ZR36057_ISR_GIRQ1,
                .gpio = { 3, 0, 6, 1, 2, -1, 4, 5 },
                .gpio_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
                .gpcs = { -1, 1 },
                .vfe_pol = { 1, 1, 1, 1, 0, 0, 0, 0 },
                .gws_not_connected = 0,
                .input_mux = 0,
                .init = &dc10plus_init,
        }, {
                .type = DC30,
                .name = "DC30",
                .i2c_decoder = "vpx3220a",
                .addrs_decoder = vpx3220_addrs,
                .i2c_encoder = "adv7175",
                .addrs_encoder = adv717x_addrs,
                .video_codec = CODEC_TYPE_ZR36050,
                .video_vfe = CODEC_TYPE_ZR36016,

                .inputs = 3,
                .input = {
                        { 1, "Composite" },
                        { 2, "S-Video" },
                        { 0, "Internal/comp" }
                },
                .norms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
                .tvn = {
                        &f50sqpixel_dc10,
                        &f60sqpixel_dc10,
                        &f50sqpixel_dc10
                },
                .jpeg_int = 0,
                .vsync_int = ZR36057_ISR_GIRQ1,
                .gpio = { 2, 1, -1, 3, 7, 0, 4, 5 },
                .gpio_pol = { 0, 0, 0, 1, 0, 0, 0, 0 },
                .gpcs = { -1, 0 },
                .vfe_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
                .gws_not_connected = 0,
                .input_mux = 0,
                .init = &dc10_init,
        }, {
                .type = DC30_PLUS,
                .name = "DC30_PLUS",
                .i2c_decoder = "vpx3220a",
                .addrs_decoder = vpx3220_addrs,
                .i2c_encoder = "adv7175",
                .addrs_encoder = adv717x_addrs,
                .video_codec = CODEC_TYPE_ZR36050,
                .video_vfe = CODEC_TYPE_ZR36016,

                .inputs = 3,
                .input = {
                        { 1, "Composite" },
                        { 2, "S-Video" },
                        { 0, "Internal/comp" }
                },
                .norms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
                .tvn = {
                        &f50sqpixel_dc10,
                        &f60sqpixel_dc10,
                        &f50sqpixel_dc10
                },
                .jpeg_int = 0,
                .vsync_int = ZR36057_ISR_GIRQ1,
                .gpio = { 2, 1, -1, 3, 7, 0, 4, 5 },
                .gpio_pol = { 0, 0, 0, 1, 0, 0, 0, 0 },
                .gpcs = { -1, 0 },
                .vfe_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
                .gws_not_connected = 0,
                .input_mux = 0,
                .init = &dc10_init,
        }, {
                .type = LML33,
                .name = "LML33",
                .i2c_decoder = "bt819a",
                .addrs_decoder = bt819_addrs,
                .i2c_encoder = "bt856",
                .addrs_encoder = bt856_addrs,
                .video_codec = CODEC_TYPE_ZR36060,

                .inputs = 2,
                .input = {
                        { 0, "Composite" },
                        { 7, "S-Video" }
                },
                .norms = V4L2_STD_NTSC | V4L2_STD_PAL,
                .tvn = {
                        &f50ccir601_lml33,
                        &f60ccir601_lml33,
                        NULL
                },
                .jpeg_int = ZR36057_ISR_GIRQ1,
                .vsync_int = ZR36057_ISR_GIRQ0,
                .gpio = { 1, -1, 3, 5, 7, -1, -1, -1 },
                .gpio_pol = { 0, 0, 0, 0, 1, 0, 0, 0 },
                .gpcs = { 3, 1 },
                .vfe_pol = { 1, 1, 0, 0, 0, 1, 0, 0 },
                .gws_not_connected = 1,
                .input_mux = 0,
                .init = &lml33_init,
        }, {
                .type = LML33R10,
                .name = "LML33R10",
                .i2c_decoder = "saa7114",
                .addrs_decoder = saa7114_addrs,
                .i2c_encoder = "adv7170",
                .addrs_encoder = adv717x_addrs,
                .video_codec = CODEC_TYPE_ZR36060,

                .inputs = 2,
                .input = {
                        { 0, "Composite" },
                        { 7, "S-Video" }
                },
                .norms = V4L2_STD_NTSC | V4L2_STD_PAL,
                .tvn = {
                        &f50ccir601_lm33r10,
                        &f60ccir601_lm33r10,
                        NULL
                },
                .jpeg_int = ZR36057_ISR_GIRQ1,
                .vsync_int = ZR36057_ISR_GIRQ0,
                .gpio = { 1, -1, 3, 5, 7, -1, -1, -1 },
                .gpio_pol = { 0, 0, 0, 0, 1, 0, 0, 0 },
                .gpcs = { 3, 1 },
                .vfe_pol = { 1, 1, 0, 0, 0, 1, 0, 0 },
                .gws_not_connected = 1,
                .input_mux = 0,
                .init = &lml33_init,
        }, {
                .type = BUZ,
                .name = "Buz",
                .i2c_decoder = "saa7111",
                .addrs_decoder = saa7111_addrs,
                .i2c_encoder = "saa7185",
                .addrs_encoder = saa7185_addrs,
                .video_codec = CODEC_TYPE_ZR36060,

                .inputs = 2,
                .input = {
                        { 3, "Composite" },
                        { 7, "S-Video" }
                },
                .norms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
                .tvn = {
                        &f50ccir601,
                        &f60ccir601,
                        &f50ccir601
                },
                .jpeg_int = ZR36057_ISR_GIRQ1,
                .vsync_int = ZR36057_ISR_GIRQ0,
                .gpio = { 1, -1, 3, -1, -1, -1, -1, -1 },
                .gpio_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
                .gpcs = { 3, 1 },
                .vfe_pol = { 1, 1, 0, 0, 0, 1, 0, 0 },
                .gws_not_connected = 1,
                .input_mux = 0,
                .init = &buz_init,
        }, {
                .type = AVS6EYES,
                .name = "6-Eyes",
                /*
                 * AverMedia chose not to brand the 6-Eyes. Thus it can't be
                 * autodetected, and requires card=x.
                 */
                .i2c_decoder = "ks0127",
                .addrs_decoder = ks0127_addrs,
                .i2c_encoder = "bt866",
                .addrs_encoder = bt866_addrs,
                .video_codec = CODEC_TYPE_ZR36060,

                .inputs = 10,
                .input = {
                        { 0, "Composite 1" },
                        { 1, "Composite 2" },
                        { 2, "Composite 3" },
                        { 4, "Composite 4" },
                        { 5, "Composite 5" },
                        { 6, "Composite 6" },
                        { 8, "S-Video 1" },
                        { 9, "S-Video 2" },
                        {10, "S-Video 3" },
                        {15, "YCbCr" }
                },
                .norms = V4L2_STD_NTSC | V4L2_STD_PAL,
                .tvn = {
                        &f50ccir601_avs6eyes,
                        &f60ccir601_avs6eyes,
                        NULL
                },
                .jpeg_int = ZR36057_ISR_GIRQ1,
                .vsync_int = ZR36057_ISR_GIRQ0,
                .gpio = { 1, 0, 3, -1, -1, -1, -1, -1 },// Validity unknown /Sam
                .gpio_pol = { 0, 0, 0, 0, 0, 0, 0, 0 }, // Validity unknown /Sam
                .gpcs = { 3, 1 },                       // Validity unknown /Sam
                .vfe_pol = { 1, 0, 0, 0, 0, 1, 0, 0 },  // Validity unknown /Sam
                .gws_not_connected = 1,
                .input_mux = 1,
                .init = &avs6eyes_init,
        }

};

/*
 * I2C functions
 */
/* software I2C functions */
static int zoran_i2c_getsda(void *data)
{
        struct zoran *zr = (struct zoran *)data;

        return (btread(ZR36057_I2CBR) >> 1) & 1;
}

static int zoran_i2c_getscl(void *data)
{
        struct zoran *zr = (struct zoran *)data;

        return btread(ZR36057_I2CBR) & 1;
}

static void zoran_i2c_setsda(void *data, int state)
{
        struct zoran *zr = (struct zoran *)data;

        if (state)
                zr->i2cbr |= 2;
        else
                zr->i2cbr &= ~2;
        btwrite(zr->i2cbr, ZR36057_I2CBR);
}

static void zoran_i2c_setscl(void *data, int state)
{
        struct zoran *zr = (struct zoran *)data;

        if (state)
                zr->i2cbr |= 1;
        else
                zr->i2cbr &= ~1;
        btwrite(zr->i2cbr, ZR36057_I2CBR);
}

static const struct i2c_algo_bit_data zoran_i2c_bit_data_template = {
        .setsda = zoran_i2c_setsda,
        .setscl = zoran_i2c_setscl,
        .getsda = zoran_i2c_getsda,
        .getscl = zoran_i2c_getscl,
        .udelay = 10,
        .timeout = 100,
};

static int zoran_register_i2c(struct zoran *zr)
{
        zr->i2c_algo = zoran_i2c_bit_data_template;
        zr->i2c_algo.data = zr;
        strscpy(zr->i2c_adapter.name, ZR_DEVNAME(zr),
                sizeof(zr->i2c_adapter.name));
        i2c_set_adapdata(&zr->i2c_adapter, &zr->v4l2_dev);
        zr->i2c_adapter.algo_data = &zr->i2c_algo;
        zr->i2c_adapter.dev.parent = &zr->pci_dev->dev;
        return i2c_bit_add_bus(&zr->i2c_adapter);
}

static void zoran_unregister_i2c(struct zoran *zr)
{
        i2c_del_adapter(&zr->i2c_adapter);
}

/* Check a zoran_params struct for correctness, insert default params */
int zoran_check_jpg_settings(struct zoran *zr,
                             struct zoran_jpg_settings *settings, int try)
{
        int err = 0, err0 = 0;

        pci_dbg(zr->pci_dev, "%s - dec: %d, Hdcm: %d, Vdcm: %d, Tdcm: %d\n",
                __func__, settings->decimation, settings->hor_dcm,
                settings->ver_dcm, settings->tmp_dcm);
        pci_dbg(zr->pci_dev, "%s - x: %d, y: %d, w: %d, y: %d\n", __func__,
                settings->img_x, settings->img_y,
                settings->img_width, settings->img_height);
        /* Check decimation, set default values for decimation = 1, 2, 4 */
        switch (settings->decimation) {
        case 1:

                settings->hor_dcm = 1;
                settings->ver_dcm = 1;
                settings->tmp_dcm = 1;
                settings->field_per_buff = 2;
                settings->img_x = 0;
                settings->img_y = 0;
                settings->img_width = BUZ_MAX_WIDTH;
                settings->img_height = BUZ_MAX_HEIGHT / 2;
                break;
        case 2:

                settings->hor_dcm = 2;
                settings->ver_dcm = 1;
                settings->tmp_dcm = 2;
                settings->field_per_buff = 1;
                settings->img_x = (BUZ_MAX_WIDTH == 720) ? 8 : 0;
                settings->img_y = 0;
                settings->img_width =
                    (BUZ_MAX_WIDTH == 720) ? 704 : BUZ_MAX_WIDTH;
                settings->img_height = BUZ_MAX_HEIGHT / 2;
                break;
        case 4:

                if (zr->card.type == DC10_NEW) {
                        pci_dbg(zr->pci_dev,
                                "%s - HDec by 4 is not supported on the DC10\n",
                                __func__);
                        err0++;
                        break;
                }

                settings->hor_dcm = 4;
                settings->ver_dcm = 2;
                settings->tmp_dcm = 2;
                settings->field_per_buff = 1;
                settings->img_x = (BUZ_MAX_WIDTH == 720) ? 8 : 0;
                settings->img_y = 0;
                settings->img_width =
                    (BUZ_MAX_WIDTH == 720) ? 704 : BUZ_MAX_WIDTH;
                settings->img_height = BUZ_MAX_HEIGHT / 2;
                break;
        case 0:

                /* We have to check the data the user has set */

                if (settings->hor_dcm != 1 && settings->hor_dcm != 2 &&
                    (zr->card.type == DC10_NEW || settings->hor_dcm != 4)) {
                        settings->hor_dcm = clamp(settings->hor_dcm, 1, 2);
                        err0++;
                }
                if (settings->ver_dcm != 1 && settings->ver_dcm != 2) {
                        settings->ver_dcm = clamp(settings->ver_dcm, 1, 2);
                        err0++;
                }
                if (settings->tmp_dcm != 1 && settings->tmp_dcm != 2) {
                        settings->tmp_dcm = clamp(settings->tmp_dcm, 1, 2);
                        err0++;
                }
                if (settings->field_per_buff != 1 &&
                    settings->field_per_buff != 2) {
                        settings->field_per_buff = clamp(settings->field_per_buff, 1, 2);
                        err0++;
                }
                if (settings->img_x < 0) {
                        settings->img_x = 0;
                        err0++;
                }
                if (settings->img_y < 0) {
                        settings->img_y = 0;
                        err0++;
                }
                if (settings->img_width < 0 || settings->img_width > BUZ_MAX_WIDTH) {
                        settings->img_width = clamp(settings->img_width, 0, (int)BUZ_MAX_WIDTH);
                        err0++;
                }
                if (settings->img_height < 0 || settings->img_height > BUZ_MAX_HEIGHT / 2) {
                        settings->img_height = clamp(settings->img_height, 0, BUZ_MAX_HEIGHT / 2);
                        err0++;
                }
                if (settings->img_x + settings->img_width > BUZ_MAX_WIDTH) {
                        settings->img_x = BUZ_MAX_WIDTH - settings->img_width;
                        err0++;
                }
                if (settings->img_y + settings->img_height > BUZ_MAX_HEIGHT / 2) {
                        settings->img_y = BUZ_MAX_HEIGHT / 2 - settings->img_height;
                        err0++;
                }
                if (settings->img_width % (16 * settings->hor_dcm) != 0) {
                        settings->img_width -= settings->img_width % (16 * settings->hor_dcm);
                        if (settings->img_width == 0)
                                settings->img_width = 16 * settings->hor_dcm;
                        err0++;
                }
                if (settings->img_height % (8 * settings->ver_dcm) != 0) {
                        settings->img_height -= settings->img_height % (8 * settings->ver_dcm);
                        if (settings->img_height == 0)
                                settings->img_height = 8 * settings->ver_dcm;
                        err0++;
                }

                if (!try && err0) {
                        pci_err(zr->pci_dev, "%s - error in params for decimation = 0\n", __func__);
                        err++;
                }
                break;
        default:
                pci_err(zr->pci_dev, "%s - decimation = %d, must be 0, 1, 2 or 4\n",
                        __func__, settings->decimation);
                err++;
                break;
        }

        if (settings->jpg_comp.quality > 100)
                settings->jpg_comp.quality = 100;
        if (settings->jpg_comp.quality < 5)
                settings->jpg_comp.quality = 5;
        if (settings->jpg_comp.APPn < 0)
                settings->jpg_comp.APPn = 0;
        if (settings->jpg_comp.APPn > 15)
                settings->jpg_comp.APPn = 15;
        if (settings->jpg_comp.APP_len < 0)
                settings->jpg_comp.APP_len = 0;
        if (settings->jpg_comp.APP_len > 60)
                settings->jpg_comp.APP_len = 60;
        if (settings->jpg_comp.COM_len < 0)
                settings->jpg_comp.COM_len = 0;
        if (settings->jpg_comp.COM_len > 60)
                settings->jpg_comp.COM_len = 60;
        if (err)
                return -EINVAL;
        return 0;
}

static int zoran_init_video_device(struct zoran *zr, struct video_device *video_dev, int dir)
{
        int err;

        /* Now add the template and register the device unit. */
        *video_dev = zoran_template;
        video_dev->v4l2_dev = &zr->v4l2_dev;
        video_dev->lock = &zr->lock;
        video_dev->device_caps = V4L2_CAP_STREAMING | dir;

        strscpy(video_dev->name, ZR_DEVNAME(zr), sizeof(video_dev->name));
        video_dev->vfl_dir = VFL_DIR_RX;
        zoran_queue_init(zr, &zr->vq, V4L2_BUF_TYPE_VIDEO_CAPTURE);

        err = video_register_device(video_dev, VFL_TYPE_VIDEO, video_nr[zr->id]);
        if (err < 0)
                return err;
        video_set_drvdata(video_dev, zr);
        return 0;
}

static void zoran_exit_video_devices(struct zoran *zr)
{
        video_unregister_device(zr->video_dev);
        kfree(zr->video_dev);
}

static int zoran_init_video_devices(struct zoran *zr)
{
        int err;

        zr->video_dev = video_device_alloc();
        if (!zr->video_dev)
                return -ENOMEM;

        err = zoran_init_video_device(zr, zr->video_dev, V4L2_CAP_VIDEO_CAPTURE);
        if (err)
                kfree(zr->video_dev);
        return err;
}

/*
 * v4l2_device_unregister() will care about removing zr->encoder/zr->decoder
 * via v4l2_i2c_subdev_unregister()
 */
static int zoran_i2c_init(struct zoran *zr)
{
        int err;

        pci_info(zr->pci_dev, "Initializing i2c bus...\n");

        err = zoran_register_i2c(zr);
        if (err) {
                pci_err(zr->pci_dev, "%s - cannot initialize i2c bus\n", __func__);
                return err;
        }

        zr->decoder = v4l2_i2c_new_subdev(&zr->v4l2_dev, &zr->i2c_adapter,
                                          zr->card.i2c_decoder, 0,
                                          zr->card.addrs_decoder);
        if (!zr->decoder) {
                pci_err(zr->pci_dev, "Fail to get decoder %s\n", zr->card.i2c_decoder);
                err = -EINVAL;
                goto error_decoder;
        }

        if (zr->card.i2c_encoder) {
                zr->encoder = v4l2_i2c_new_subdev(&zr->v4l2_dev, &zr->i2c_adapter,
                                                  zr->card.i2c_encoder, 0,
                                                  zr->card.addrs_encoder);
                if (!zr->encoder) {
                        pci_err(zr->pci_dev, "Fail to get encoder %s\n", zr->card.i2c_encoder);
                        err = -EINVAL;
                        goto error_decoder;
                }
        }
        return 0;

error_decoder:
        zoran_unregister_i2c(zr);
        return err;
}

static void zoran_i2c_exit(struct zoran *zr)
{
        zoran_unregister_i2c(zr);
}

void zoran_open_init_params(struct zoran *zr)
{
        int i;

        zr->v4l_settings.width = 192;
        zr->v4l_settings.height = 144;
        zr->v4l_settings.format = &zoran_formats[7];    /* YUY2 - YUV-4:2:2 packed */
        zr->v4l_settings.bytesperline = zr->v4l_settings.width *
                ((zr->v4l_settings.format->depth + 7) / 8);

        /* Set necessary params and call zoran_check_jpg_settings to set the defaults */
        zr->jpg_settings.decimation = 1;
        zr->jpg_settings.jpg_comp.quality = 50; /* default compression factor 8 */
        if (zr->card.type != BUZ)
                zr->jpg_settings.odd_even = 1;
        else
                zr->jpg_settings.odd_even = 0;
        zr->jpg_settings.jpg_comp.APPn = 0;
        zr->jpg_settings.jpg_comp.APP_len = 0;  /* No APPn marker */
        memset(zr->jpg_settings.jpg_comp.APP_data, 0,
               sizeof(zr->jpg_settings.jpg_comp.APP_data));
        zr->jpg_settings.jpg_comp.COM_len = 0;  /* No COM marker */
        memset(zr->jpg_settings.jpg_comp.COM_data, 0,
               sizeof(zr->jpg_settings.jpg_comp.COM_data));
        zr->jpg_settings.jpg_comp.jpeg_markers =
            V4L2_JPEG_MARKER_DHT | V4L2_JPEG_MARKER_DQT;
        i = zoran_check_jpg_settings(zr, &zr->jpg_settings, 0);
        if (i)
                pci_err(zr->pci_dev, "%s internal error\n", __func__);

        zr->buffer_size = zr->v4l_settings.bytesperline * zr->v4l_settings.height;

        clear_interrupt_counters(zr);
}

static int zr36057_init(struct zoran *zr)
{
        int j, err;

        pci_info(zr->pci_dev, "initializing card[%d]\n", zr->id);

        /* Avoid nonsense settings from user for default input/norm */
        if (default_norm < 0 || default_norm > 2)
                default_norm = 0;
        if (default_norm == 0) {
                zr->norm = V4L2_STD_PAL;
                zr->timing = zr->card.tvn[ZR_NORM_PAL];
        } else if (default_norm == 1) {
                zr->norm = V4L2_STD_NTSC;
                zr->timing = zr->card.tvn[ZR_NORM_NTSC];
        } else {
                zr->norm = V4L2_STD_SECAM;
                zr->timing = zr->card.tvn[ZR_NORM_SECAM];
        }
        if (!zr->timing) {
                pci_warn(zr->pci_dev,
                         "%s - default TV standard not supported by hardware. PAL will be used.\n",
                         __func__);
                zr->norm = V4L2_STD_PAL;
                zr->timing = zr->card.tvn[ZR_NORM_PAL];
        }

        if (default_input > zr->card.inputs - 1) {
                pci_warn(zr->pci_dev, "default_input value %d out of range (0-%d)\n",
                         default_input, zr->card.inputs - 1);
                default_input = 0;
        }
        zr->input = default_input;

        /* default setup (will be repeated at every open) */
        zoran_open_init_params(zr);

        /* allocate memory *before* doing anything to the hardware in case allocation fails */
        zr->stat_com = dma_alloc_coherent(&zr->pci_dev->dev,
                                          BUZ_NUM_STAT_COM * sizeof(u32),
                                          &zr->p_sc, GFP_KERNEL);
        if (!zr->stat_com)
                return -ENOMEM;

        for (j = 0; j < BUZ_NUM_STAT_COM; j++)
                zr->stat_com[j] = cpu_to_le32(1); /* mark as unavailable to zr36057 */

        zr->stat_comb = dma_alloc_coherent(&zr->pci_dev->dev,
                                           BUZ_NUM_STAT_COM * sizeof(u32) * 2,
                                           &zr->p_scb, GFP_KERNEL);
        if (!zr->stat_comb) {
                err = -ENOMEM;
                goto exit_statcom;
        }

        err = zoran_init_video_devices(zr);
        if (err)
                goto exit_statcomb;

        zoran_init_hardware(zr);
        if (!pass_through) {
                decoder_call(zr, video, s_stream, 0);
                encoder_call(zr, video, s_routing, 2, 0, 0);
        }

        zr->initialized = 1;
        return 0;

exit_statcomb:
        dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32) * 2,
                          zr->stat_comb, zr->p_scb);
exit_statcom:
        dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32),
                          zr->stat_com, zr->p_sc);
        return err;
}

static void zoran_remove(struct pci_dev *pdev)
{
        struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
        struct zoran *zr = to_zoran(v4l2_dev);

        if (!zr->initialized)
                goto exit_free;

        debugfs_remove_recursive(zr->dbgfs_dir);

        zoran_queue_exit(zr);

        /* unregister videocodec bus */
        if (zr->codec)
                videocodec_detach(zr->codec);
        if (zr->vfe)
                videocodec_detach(zr->vfe);
        videocodec_exit(zr);

        /* unregister i2c bus */
        zoran_i2c_exit(zr);
        /* disable PCI bus-mastering */
        zoran_set_pci_master(zr, 0);
        /* put chip into reset */
        btwrite(0, ZR36057_SPGPPCR);
        pci_free_irq(zr->pci_dev, 0, zr);
        /* unmap and free memory */
        dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32),
                          zr->stat_com, zr->p_sc);
        dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32) * 2,
                          zr->stat_comb, zr->p_scb);
        pci_release_regions(pdev);
        pci_disable_device(zr->pci_dev);
        zoran_exit_video_devices(zr);
exit_free:
        v4l2_ctrl_handler_free(&zr->hdl);
        v4l2_device_unregister(&zr->v4l2_dev);
}

void zoran_vdev_release(struct video_device *vdev)
{
        kfree(vdev);
}

static struct videocodec_master *zoran_setup_videocodec(struct zoran *zr,
                                                        int type)
{
        struct videocodec_master *m = NULL;

        m = devm_kmalloc(&zr->pci_dev->dev, sizeof(*m), GFP_KERNEL);
        if (!m)
                return m;

        /*
         * magic and type are unused for master struct. Makes sense only at codec structs.
         * In the past, .type were initialized to the old V4L1 .hardware value,
         * as VID_HARDWARE_ZR36067
         */
        m->magic = 0L;
        m->type = 0;

        m->flags = CODEC_FLAG_ENCODER | CODEC_FLAG_DECODER;
        strscpy(m->name, ZR_DEVNAME(zr), sizeof(m->name));
        m->data = zr;

        switch (type) {
        case CODEC_TYPE_ZR36060:
                m->readreg = zr36060_read;
                m->writereg = zr36060_write;
                m->flags |= CODEC_FLAG_JPEG | CODEC_FLAG_VFE;
                break;
        case CODEC_TYPE_ZR36050:
                m->readreg = zr36050_read;
                m->writereg = zr36050_write;
                m->flags |= CODEC_FLAG_JPEG;
                break;
        case CODEC_TYPE_ZR36016:
                m->readreg = zr36016_read;
                m->writereg = zr36016_write;
                m->flags |= CODEC_FLAG_VFE;
                break;
        }

        return m;
}

static void zoran_subdev_notify(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
        struct zoran *zr = to_zoran(sd->v4l2_dev);

        /*
         * Bt819 needs to reset its FIFO buffer using #FRST pin and
         * LML33 card uses GPIO(7) for that.
         */
        if (cmd == BT819_FIFO_RESET_LOW)
                GPIO(zr, 7, 0);
        else if (cmd == BT819_FIFO_RESET_HIGH)
                GPIO(zr, 7, 1);
}

static int zoran_video_set_ctrl(struct v4l2_ctrl *ctrl)
{
        struct zoran *zr = container_of(ctrl->handler, struct zoran, hdl);

        switch (ctrl->id) {
        case V4L2_CID_JPEG_COMPRESSION_QUALITY:
                zr->jpg_settings.jpg_comp.quality = ctrl->val;
                return zoran_check_jpg_settings(zr, &zr->jpg_settings, 0);
        default:
                return -EINVAL;
        }

        return 0;
}

static const struct v4l2_ctrl_ops zoran_video_ctrl_ops = {
        .s_ctrl = zoran_video_set_ctrl,
};

static int zoran_debugfs_show(struct seq_file *seq, void *v)
{
        struct zoran *zr = seq->private;

        seq_printf(seq, "Running mode %x\n", zr->running);
        seq_printf(seq, "Codec mode %x\n", zr->codec_mode);
        seq_printf(seq, "Norm %llx\n", zr->norm);
        seq_printf(seq, "Input %d\n", zr->input);
        seq_printf(seq, "Buffersize %d\n", zr->buffer_size);

        seq_printf(seq, "V4L width %dx%d\n", zr->v4l_settings.width, zr->v4l_settings.height);
        seq_printf(seq, "V4L bytesperline %d\n", zr->v4l_settings.bytesperline);

        seq_printf(seq, "JPG decimation %u\n", zr->jpg_settings.decimation);
        seq_printf(seq, "JPG hor_dcm %u\n", zr->jpg_settings.hor_dcm);
        seq_printf(seq, "JPG ver_dcm %u\n", zr->jpg_settings.ver_dcm);
        seq_printf(seq, "JPG tmp_dcm %u\n", zr->jpg_settings.tmp_dcm);
        seq_printf(seq, "JPG odd_even %u\n", zr->jpg_settings.odd_even);
        seq_printf(seq, "JPG crop (%d,%d)/%dx%d\n",
                   zr->jpg_settings.img_x,
                   zr->jpg_settings.img_y,
                   zr->jpg_settings.img_width,
                   zr->jpg_settings.img_height);

        seq_printf(seq, "Prepared %u\n", zr->prepared);
        seq_printf(seq, "Queued %u\n", zr->queued);

        videocodec_debugfs_show(seq);
        return 0;
}

DEFINE_SHOW_ATTRIBUTE(zoran_debugfs);

/*
 *   Scan for a Buz card (actually for the PCI controller ZR36057),
 *   request the irq and map the io memory
 */
static int zoran_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
        unsigned char latency, need_latency;
        struct zoran *zr;
        int result;
        struct videocodec_master *master_vfe = NULL;
        struct videocodec_master *master_codec = NULL;
        int card_num;
        unsigned int nr;
        int err;

        pci_info(pdev, "Zoran MJPEG board driver version %s\n", ZORAN_VERSION);

        /* some mainboards might not do PCI-PCI data transfer well */
        if (pci_pci_problems & (PCIPCI_FAIL | PCIAGP_FAIL | PCIPCI_ALIMAGIK))
                pci_warn(pdev, "%s: chipset does not support reliable PCI-PCI DMA\n",
                         ZORAN_NAME);

        err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
        if (err)
                return err;
        err = vb2_dma_contig_set_max_seg_size(&pdev->dev, U32_MAX);
        if (err)
                return err;

        nr = zoran_num++;
        if (nr >= BUZ_MAX) {
                pci_err(pdev, "driver limited to %d card(s) maximum\n", BUZ_MAX);
                return -ENOENT;
        }

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

        zr->v4l2_dev.notify = zoran_subdev_notify;
        if (v4l2_device_register(&pdev->dev, &zr->v4l2_dev))
                goto zr_free_mem;
        zr->pci_dev = pdev;
        zr->id = nr;
        snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), "MJPEG[%u]", zr->id);
        if (v4l2_ctrl_handler_init(&zr->hdl, 10))
                goto zr_unreg;
        zr->v4l2_dev.ctrl_handler = &zr->hdl;
        v4l2_ctrl_new_std(&zr->hdl, &zoran_video_ctrl_ops,
                          V4L2_CID_JPEG_COMPRESSION_QUALITY, 0,
                          100, 1, 50);
        spin_lock_init(&zr->spinlock);
        mutex_init(&zr->lock);
        if (pci_enable_device(pdev))
                goto zr_unreg;
        zr->revision = zr->pci_dev->revision;

        pci_info(zr->pci_dev, "Zoran ZR360%c7 (rev %d), irq: %d, memory: 0x%08llx\n",
                 zr->revision < 2 ? '5' : '6', zr->revision,
                 zr->pci_dev->irq, (uint64_t)pci_resource_start(zr->pci_dev, 0));
        if (zr->revision >= 2)
                pci_info(zr->pci_dev, "Subsystem vendor=0x%04x id=0x%04x\n",
                         zr->pci_dev->subsystem_vendor, zr->pci_dev->subsystem_device);

        /* Use auto-detected card type? */
        if (card[nr] == -1) {
                if (zr->revision < 2) {
                        pci_err(pdev, "No card type specified, please use the card=X module parameter\n");
                        pci_err(pdev, "It is not possible to auto-detect ZR36057 based cards\n");
                        goto zr_unreg;
                }

                card_num = ent->driver_data;
                if (card_num >= NUM_CARDS) {
                        pci_err(pdev, "Unknown card, try specifying card=X module parameter\n");
                        goto zr_unreg;
                }
                pci_info(zr->pci_dev, "%s() - card %s detected\n", __func__,
                         zoran_cards[card_num].name);
        } else {
                card_num = card[nr];
                if (card_num >= NUM_CARDS || card_num < 0) {
                        pci_err(pdev, "User specified card type %d out of range (0 .. %d)\n",
                                card_num, NUM_CARDS - 1);
                        goto zr_unreg;
                }
        }

        /*
         * even though we make this a non pointer and thus
         * theoretically allow for making changes to this struct
         * on a per-individual card basis at runtime, this is
         * strongly discouraged. This structure is intended to
         * keep general card information, no settings or anything
         */
        zr->card = zoran_cards[card_num];
        snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), "%s[%u]",
                 zr->card.name, zr->id);

        err = pci_request_regions(pdev, ZR_DEVNAME(zr));
        if (err)
                goto zr_unreg;

        zr->zr36057_mem = devm_ioremap(&pdev->dev, pci_resource_start(pdev, 0),
                                       pci_resource_len(pdev, 0));
        if (!zr->zr36057_mem) {
                pci_err(pdev, "%s() - ioremap failed\n", __func__);
                goto zr_pci_release;
        }

        result = pci_request_irq(pdev, 0, zoran_irq, NULL, zr, ZR_DEVNAME(zr));
        if (result < 0) {
                if (result == -EINVAL) {
                        pci_err(pdev, "%s - bad IRQ number or handler\n", __func__);
                } else if (result == -EBUSY) {
                        pci_err(pdev, "%s - IRQ %d busy, change your PnP config in BIOS\n",
                                __func__, zr->pci_dev->irq);
                } else {
                        pci_err(pdev, "%s - cannot assign IRQ, error code %d\n", __func__, result);
                }
                goto zr_pci_release;
        }

        /* set PCI latency timer */
        pci_read_config_byte(zr->pci_dev, PCI_LATENCY_TIMER,
                             &latency);
        need_latency = zr->revision > 1 ? 32 : 48;
        if (latency != need_latency) {
                pci_info(zr->pci_dev, "Changing PCI latency from %d to %d\n",
                         latency, need_latency);
                pci_write_config_byte(zr->pci_dev, PCI_LATENCY_TIMER, need_latency);
        }

        zr36057_restart(zr);

        err = zoran_i2c_init(zr);
        if (err)
                goto zr_free_irq;

        pci_info(zr->pci_dev, "Initializing videocodec bus...\n");
        err = videocodec_init(zr);
        if (err)
                goto zr_unreg_i2c;

        /* reset JPEG codec */
        jpeg_codec_sleep(zr, 1);
        jpeg_codec_reset(zr);
        /* video bus enabled */
        /* display codec revision */
        if (zr->card.video_codec != 0) {
                master_codec = zoran_setup_videocodec(zr, zr->card.video_codec);
                if (!master_codec)
                        goto zr_unreg_videocodec;
                zr->codec = videocodec_attach(master_codec);
                if (!zr->codec) {
                        pci_err(pdev, "%s - no codec found\n", __func__);
                        goto zr_unreg_videocodec;
                }
                if (zr->codec->type != zr->card.video_codec) {
                        pci_err(pdev, "%s - wrong codec\n", __func__);
                        goto zr_unreg_videocodec;
                }
        }
        if (zr->card.video_vfe != 0) {
                master_vfe = zoran_setup_videocodec(zr, zr->card.video_vfe);
                if (!master_vfe)
                        goto zr_detach_codec;
                zr->vfe = videocodec_attach(master_vfe);
                if (!zr->vfe) {
                        pci_err(pdev, "%s - no VFE found\n", __func__);
                        goto zr_detach_codec;
                }
                if (zr->vfe->type != zr->card.video_vfe) {
                        pci_err(pdev, "%s = wrong VFE\n", __func__);
                        goto zr_detach_vfe;
                }
        }

        /* take care of Natoma chipset and a revision 1 zr36057 */
        if ((pci_pci_problems & PCIPCI_NATOMA) && zr->revision <= 1)
                pci_info(zr->pci_dev, "ZR36057/Natoma bug, max. buffer size is 128K\n");

        if (zr36057_init(zr) < 0)
                goto zr_detach_vfe;

        zr->map_mode = ZORAN_MAP_MODE_RAW;

        zr->dbgfs_dir = debugfs_create_dir(ZR_DEVNAME(zr), NULL);
        debugfs_create_file("debug", 0444, zr->dbgfs_dir, zr,
                            &zoran_debugfs_fops);
        return 0;

zr_detach_vfe:
        videocodec_detach(zr->vfe);
zr_detach_codec:
        videocodec_detach(zr->codec);
zr_unreg_videocodec:
        videocodec_exit(zr);
zr_unreg_i2c:
        zoran_i2c_exit(zr);
zr_free_irq:
        btwrite(0, ZR36057_SPGPPCR);
        pci_free_irq(zr->pci_dev, 0, zr);
zr_pci_release:
        pci_release_regions(pdev);
zr_unreg:
        v4l2_ctrl_handler_free(&zr->hdl);
        v4l2_device_unregister(&zr->v4l2_dev);
zr_free_mem:

        return -ENODEV;
}

static struct pci_driver zoran_driver = {
        .name = "zr36067",
        .id_table = zr36067_pci_tbl,
        .probe = zoran_probe,
        .remove = zoran_remove,
};

module_pci_driver(zoran_driver);