// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Afatech AF9035 DVB USB driver
 *
 * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
 * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
 */

#include "af9035.h"

/* Max transfer size done by I2C transfer functions */
#define MAX_XFER_SIZE  64

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

static u16 af9035_checksum(const u8 *buf, size_t len)
{
        size_t i;
        u16 checksum = 0;

        for (i = 1; i < len; i++) {
                if (i % 2)
                        checksum += buf[i] << 8;
                else
                        checksum += buf[i];
        }
        checksum = ~checksum;

        return checksum;
}

static int af9035_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
{
#define REQ_HDR_LEN 4 /* send header size */
#define ACK_HDR_LEN 3 /* rece header size */
#define CHECKSUM_LEN 2
#define USB_TIMEOUT 2000
        struct state *state = d_to_priv(d);
        struct usb_interface *intf = d->intf;
        int ret, wlen, rlen;
        u16 checksum, tmp_checksum;

        mutex_lock(&d->usb_mutex);

        /* buffer overflow check */
        if (req->wlen > (BUF_LEN - REQ_HDR_LEN - CHECKSUM_LEN) ||
                        req->rlen > (BUF_LEN - ACK_HDR_LEN - CHECKSUM_LEN)) {
                dev_err(&intf->dev, "too much data wlen=%d rlen=%d\n",
                        req->wlen, req->rlen);
                ret = -EINVAL;
                goto exit;
        }

        state->buf[0] = REQ_HDR_LEN + req->wlen + CHECKSUM_LEN - 1;
        state->buf[1] = req->mbox;
        state->buf[2] = req->cmd;
        state->buf[3] = state->seq++;
        memcpy(&state->buf[REQ_HDR_LEN], req->wbuf, req->wlen);

        wlen = REQ_HDR_LEN + req->wlen + CHECKSUM_LEN;
        rlen = ACK_HDR_LEN + req->rlen + CHECKSUM_LEN;

        /* calc and add checksum */
        checksum = af9035_checksum(state->buf, state->buf[0] - 1);
        state->buf[state->buf[0] - 1] = (checksum >> 8);
        state->buf[state->buf[0] - 0] = (checksum & 0xff);

        /* no ack for these packets */
        if (req->cmd == CMD_FW_DL)
                rlen = 0;

        ret = dvb_usbv2_generic_rw_locked(d,
                        state->buf, wlen, state->buf, rlen);
        if (ret)
                goto exit;

        /* no ack for those packets */
        if (req->cmd == CMD_FW_DL)
                goto exit;

        /* verify checksum */
        checksum = af9035_checksum(state->buf, rlen - 2);
        tmp_checksum = (state->buf[rlen - 2] << 8) | state->buf[rlen - 1];
        if (tmp_checksum != checksum) {
                dev_err(&intf->dev, "command=%02x checksum mismatch (%04x != %04x)\n",
                        req->cmd, tmp_checksum, checksum);
                ret = -EIO;
                goto exit;
        }

        /* check status */
        if (state->buf[2]) {
                /* fw returns status 1 when IR code was not received */
                if (req->cmd == CMD_IR_GET || state->buf[2] == 1) {
                        ret = 1;
                        goto exit;
                }

                dev_dbg(&intf->dev, "command=%02x failed fw error=%d\n",
                        req->cmd, state->buf[2]);
                ret = -EIO;
                goto exit;
        }

        /* read request, copy returned data to return buf */
        if (req->rlen)
                memcpy(req->rbuf, &state->buf[ACK_HDR_LEN], req->rlen);
exit:
        mutex_unlock(&d->usb_mutex);
        return ret;
}

/* write multiple registers */
static int af9035_wr_regs(struct dvb_usb_device *d, u32 reg, u8 *val, int len)
{
        struct usb_interface *intf = d->intf;
        u8 wbuf[MAX_XFER_SIZE];
        u8 mbox = (reg >> 16) & 0xff;
        struct usb_req req = { CMD_MEM_WR, mbox, 6 + len, wbuf, 0, NULL };

        if (6 + len > sizeof(wbuf)) {
                dev_warn(&intf->dev, "i2c wr: len=%d is too big!\n", len);
                return -EOPNOTSUPP;
        }

        wbuf[0] = len;
        wbuf[1] = 2;
        wbuf[2] = 0;
        wbuf[3] = 0;
        wbuf[4] = (reg >> 8) & 0xff;
        wbuf[5] = (reg >> 0) & 0xff;
        memcpy(&wbuf[6], val, len);

        return af9035_ctrl_msg(d, &req);
}

/* read multiple registers */
static int af9035_rd_regs(struct dvb_usb_device *d, u32 reg, u8 *val, int len)
{
        u8 wbuf[] = { len, 2, 0, 0, (reg >> 8) & 0xff, reg & 0xff };
        u8 mbox = (reg >> 16) & 0xff;
        struct usb_req req = { CMD_MEM_RD, mbox, sizeof(wbuf), wbuf, len, val };

        return af9035_ctrl_msg(d, &req);
}

/* write single register */
static int af9035_wr_reg(struct dvb_usb_device *d, u32 reg, u8 val)
{
        return af9035_wr_regs(d, reg, &val, 1);
}

/* read single register */
static int af9035_rd_reg(struct dvb_usb_device *d, u32 reg, u8 *val)
{
        return af9035_rd_regs(d, reg, val, 1);
}

/* write single register with mask */
static int af9035_wr_reg_mask(struct dvb_usb_device *d, u32 reg, u8 val,
                u8 mask)
{
        int ret;
        u8 tmp;

        /* no need for read if whole reg is written */
        if (mask != 0xff) {
                ret = af9035_rd_regs(d, reg, &tmp, 1);
                if (ret)
                        return ret;

                val &= mask;
                tmp &= ~mask;
                val |= tmp;
        }

        return af9035_wr_regs(d, reg, &val, 1);
}

static int af9035_add_i2c_dev(struct dvb_usb_device *d, const char *type,
                u8 addr, void *platform_data, struct i2c_adapter *adapter)
{
        int ret, num;
        struct state *state = d_to_priv(d);
        struct usb_interface *intf = d->intf;
        struct i2c_client *client;
        struct i2c_board_info board_info = {
                .addr = addr,
                .platform_data = platform_data,
        };

        strscpy(board_info.type, type, I2C_NAME_SIZE);

        /* find first free client */
        for (num = 0; num < AF9035_I2C_CLIENT_MAX; num++) {
                if (state->i2c_client[num] == NULL)
                        break;
        }

        dev_dbg(&intf->dev, "num=%d\n", num);

        if (num == AF9035_I2C_CLIENT_MAX) {
                dev_err(&intf->dev, "I2C client out of index\n");
                ret = -ENODEV;
                goto err;
        }

        request_module("%s", board_info.type);

        /* register I2C device */
        client = i2c_new_client_device(adapter, &board_info);
        if (!i2c_client_has_driver(client)) {
                dev_err(&intf->dev, "failed to bind i2c device to %s driver\n", type);
                ret = -ENODEV;
                goto err;
        }

        /* increase I2C driver usage count */
        if (!try_module_get(client->dev.driver->owner)) {
                i2c_unregister_device(client);
                ret = -ENODEV;
                goto err;
        }

        state->i2c_client[num] = client;
        return 0;
err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);
        return ret;
}

static void af9035_del_i2c_dev(struct dvb_usb_device *d)
{
        int num;
        struct state *state = d_to_priv(d);
        struct usb_interface *intf = d->intf;
        struct i2c_client *client;

        /* find last used client */
        num = AF9035_I2C_CLIENT_MAX;
        while (num--) {
                if (state->i2c_client[num] != NULL)
                        break;
        }

        dev_dbg(&intf->dev, "num=%d\n", num);

        if (num == -1) {
                dev_err(&intf->dev, "I2C client out of index\n");
                goto err;
        }

        client = state->i2c_client[num];

        /* decrease I2C driver usage count */
        module_put(client->dev.driver->owner);

        /* unregister I2C device */
        i2c_unregister_device(client);

        state->i2c_client[num] = NULL;
        return;
err:
        dev_dbg(&intf->dev, "failed\n");
}

static int af9035_i2c_master_xfer(struct i2c_adapter *adap,
                struct i2c_msg msg[], int num)
{
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        struct state *state = d_to_priv(d);
        int ret;

        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
                return -EAGAIN;

        /*
         * AF9035 I2C sub header is 5 bytes long. Meaning of those bytes are:
         * 0: data len
         * 1: I2C addr << 1
         * 2: reg addr len
         *    byte 3 and 4 can be used as reg addr
         * 3: reg addr MSB
         *    used when reg addr len is set to 2
         * 4: reg addr LSB
         *    used when reg addr len is set to 1 or 2
         *
         * For the simplify we do not use register addr at all.
         * NOTE: As a firmware knows tuner type there is very small possibility
         * there could be some tuner I2C hacks done by firmware and this may
         * lead problems if firmware expects those bytes are used.
         *
         * TODO: Here is few hacks. AF9035 chip integrates AF9033 demodulator.
         * IT9135 chip integrates AF9033 demodulator and RF tuner. For dual
         * tuner devices, there is also external AF9033 demodulator connected
         * via external I2C bus. All AF9033 demod I2C traffic, both single and
         * dual tuner configuration, is covered by firmware - actual USB IO
         * looks just like a memory access.
         * In case of IT913x chip, there is own tuner driver. It is implemented
         * currently as a I2C driver, even tuner IP block is likely build
         * directly into the demodulator memory space and there is no own I2C
         * bus. I2C subsystem does not allow register multiple devices to same
         * bus, having same slave address. Due to that we reuse demod address,
         * shifted by one bit, on that case.
         *
         * For IT930x we use a different command and the sub header is
         * different as well:
         * 0: data len
         * 1: I2C bus (0x03 seems to be only value used)
         * 2: I2C addr << 1
         */
#define AF9035_IS_I2C_XFER_WRITE_READ(_msg, _num) \
        (_num == 2 && !(_msg[0].flags & I2C_M_RD) && (_msg[1].flags & I2C_M_RD))
#define AF9035_IS_I2C_XFER_WRITE(_msg, _num) \
        (_num == 1 && !(_msg[0].flags & I2C_M_RD))
#define AF9035_IS_I2C_XFER_READ(_msg, _num) \
        (_num == 1 && (_msg[0].flags & I2C_M_RD))

        if (AF9035_IS_I2C_XFER_WRITE_READ(msg, num)) {
                if (msg[0].len > 40 || msg[1].len > 40) {
                        /* TODO: correct limits > 40 */
                        ret = -EOPNOTSUPP;
                } else if ((msg[0].addr == state->af9033_i2c_addr[0]) ||
                           (msg[0].addr == state->af9033_i2c_addr[1])) {
                        /* demod access via firmware interface */
                        u32 reg;

                        if (msg[0].len < 3 || msg[1].len < 1) {
                                ret = -EOPNOTSUPP;
                                goto unlock;
                        }

                        reg = msg[0].buf[0] << 16 | msg[0].buf[1] << 8 |
                                msg[0].buf[2];

                        if (msg[0].addr == state->af9033_i2c_addr[1])
                                reg |= 0x100000;

                        ret = af9035_rd_regs(d, reg, &msg[1].buf[0],
                                        msg[1].len);
                } else if (state->no_read) {
                        memset(msg[1].buf, 0, msg[1].len);
                        ret = 0;
                } else {
                        /* I2C write + read */
                        u8 buf[MAX_XFER_SIZE];
                        struct usb_req req = { CMD_I2C_RD, 0, 5 + msg[0].len,
                                        buf, msg[1].len, msg[1].buf };

                        if (state->chip_type == 0x9306) {
                                req.cmd = CMD_GENERIC_I2C_RD;
                                req.wlen = 3 + msg[0].len;
                        }
                        req.mbox |= ((msg[0].addr & 0x80)  >>  3);

                        buf[0] = msg[1].len;
                        if (state->chip_type == 0x9306) {
                                buf[1] = 0x03; /* I2C bus */
                                buf[2] = msg[0].addr << 1;
                                memcpy(&buf[3], msg[0].buf, msg[0].len);
                        } else {
                                buf[1] = msg[0].addr << 1;
                                buf[3] = 0x00; /* reg addr MSB */
                                buf[4] = 0x00; /* reg addr LSB */

                                /* Keep prev behavior for write req len > 2*/
                                if (msg[0].len > 2) {
                                        buf[2] = 0x00; /* reg addr len */
                                        memcpy(&buf[5], msg[0].buf, msg[0].len);

                                /* Use reg addr fields if write req len <= 2 */
                                } else {
                                        req.wlen = 5;
                                        buf[2] = msg[0].len;
                                        if (msg[0].len == 2) {
                                                buf[3] = msg[0].buf[0];
                                                buf[4] = msg[0].buf[1];
                                        } else if (msg[0].len == 1) {
                                                buf[4] = msg[0].buf[0];
                                        }
                                }
                        }
                        ret = af9035_ctrl_msg(d, &req);
                }
        } else if (AF9035_IS_I2C_XFER_WRITE(msg, num)) {
                if (msg[0].len > 40) {
                        /* TODO: correct limits > 40 */
                        ret = -EOPNOTSUPP;
                } else if ((msg[0].addr == state->af9033_i2c_addr[0]) ||
                           (msg[0].addr == state->af9033_i2c_addr[1])) {
                        /* demod access via firmware interface */
                        u32 reg;

                        if (msg[0].len < 3) {
                                ret = -EOPNOTSUPP;
                                goto unlock;
                        }

                        reg = msg[0].buf[0] << 16 | msg[0].buf[1] << 8 |
                                msg[0].buf[2];

                        if (msg[0].addr == state->af9033_i2c_addr[1])
                                reg |= 0x100000;

                        ret = af9035_wr_regs(d, reg, &msg[0].buf[3], msg[0].len - 3);
                } else {
                        /* I2C write */
                        u8 buf[MAX_XFER_SIZE];
                        struct usb_req req = { CMD_I2C_WR, 0, 5 + msg[0].len,
                                        buf, 0, NULL };

                        if (state->chip_type == 0x9306) {
                                req.cmd = CMD_GENERIC_I2C_WR;
                                req.wlen = 3 + msg[0].len;
                        }

                        req.mbox |= ((msg[0].addr & 0x80)  >>  3);
                        buf[0] = msg[0].len;
                        if (state->chip_type == 0x9306) {
                                buf[1] = 0x03; /* I2C bus */
                                buf[2] = msg[0].addr << 1;
                                memcpy(&buf[3], msg[0].buf, msg[0].len);
                        } else {
                                buf[1] = msg[0].addr << 1;
                                buf[2] = 0x00; /* reg addr len */
                                buf[3] = 0x00; /* reg addr MSB */
                                buf[4] = 0x00; /* reg addr LSB */
                                memcpy(&buf[5], msg[0].buf, msg[0].len);
                        }
                        ret = af9035_ctrl_msg(d, &req);
                }
        } else if (AF9035_IS_I2C_XFER_READ(msg, num)) {
                if (msg[0].len > 40) {
                        /* TODO: correct limits > 40 */
                        ret = -EOPNOTSUPP;
                } else if (state->no_read) {
                        memset(msg[0].buf, 0, msg[0].len);
                        ret = 0;
                } else {
                        /* I2C read */
                        u8 buf[5];
                        struct usb_req req = { CMD_I2C_RD, 0, sizeof(buf),
                                                buf, msg[0].len, msg[0].buf };

                        if (state->chip_type == 0x9306) {
                                req.cmd = CMD_GENERIC_I2C_RD;
                                req.wlen = 3;
                        }
                        req.mbox |= ((msg[0].addr & 0x80)  >>  3);
                        buf[0] = msg[0].len;
                        if (state->chip_type == 0x9306) {
                                buf[1] = 0x03; /* I2C bus */
                                buf[2] = msg[0].addr << 1;
                        } else {
                                buf[1] = msg[0].addr << 1;
                                buf[2] = 0x00; /* reg addr len */
                                buf[3] = 0x00; /* reg addr MSB */
                                buf[4] = 0x00; /* reg addr LSB */
                        }
                        ret = af9035_ctrl_msg(d, &req);
                }
        } else {
                /*
                 * We support only three kind of I2C transactions:
                 * 1) 1 x write + 1 x read (repeated start)
                 * 2) 1 x write
                 * 3) 1 x read
                 */
                ret = -EOPNOTSUPP;
        }

unlock:
        mutex_unlock(&d->i2c_mutex);

        if (ret < 0)
                return ret;
        else
                return num;
}

static u32 af9035_i2c_functionality(struct i2c_adapter *adapter)
{
        return I2C_FUNC_I2C;
}

static const struct i2c_algorithm af9035_i2c_algo = {
        .master_xfer = af9035_i2c_master_xfer,
        .functionality = af9035_i2c_functionality,
};

static int af9035_identify_state(struct dvb_usb_device *d, const char **name)
{
        struct state *state = d_to_priv(d);
        struct usb_interface *intf = d->intf;
        int ret, i, ts_mode_invalid;
        unsigned int utmp, eeprom_addr;
        u8 tmp;
        u8 wbuf[1] = { 1 };
        u8 rbuf[4];
        struct usb_req req = { CMD_FW_QUERYINFO, 0, sizeof(wbuf), wbuf,
                        sizeof(rbuf), rbuf };

        ret = af9035_rd_regs(d, 0x1222, rbuf, 3);
        if (ret < 0)
                goto err;

        state->chip_version = rbuf[0];
        state->chip_type = rbuf[2] << 8 | rbuf[1] << 0;

        ret = af9035_rd_reg(d, 0x384f, &state->prechip_version);
        if (ret < 0)
                goto err;

        dev_info(&intf->dev, "prechip_version=%02x chip_version=%02x chip_type=%04x\n",
                 state->prechip_version, state->chip_version, state->chip_type);

        if (state->chip_type == 0x9135) {
                if (state->chip_version == 0x02) {
                        *name = AF9035_FIRMWARE_IT9135_V2;
                        utmp = 0x00461d;
                } else {
                        *name = AF9035_FIRMWARE_IT9135_V1;
                        utmp = 0x00461b;
                }

                /* Check if eeprom exists */
                ret = af9035_rd_reg(d, utmp, &tmp);
                if (ret < 0)
                        goto err;

                if (tmp == 0x00) {
                        dev_dbg(&intf->dev, "no eeprom\n");
                        state->no_eeprom = true;
                        goto check_firmware_status;
                }

                eeprom_addr = EEPROM_BASE_IT9135;
        } else if (state->chip_type == 0x9306) {
                *name = AF9035_FIRMWARE_IT9303;
                state->no_eeprom = true;
                goto check_firmware_status;
        } else {
                *name = AF9035_FIRMWARE_AF9035;
                eeprom_addr = EEPROM_BASE_AF9035;
        }

        /* Read and store eeprom */
        for (i = 0; i < 256; i += 32) {
                ret = af9035_rd_regs(d, eeprom_addr + i, &state->eeprom[i], 32);
                if (ret < 0)
                        goto err;
        }

        dev_dbg(&intf->dev, "eeprom dump:\n");
        for (i = 0; i < 256; i += 16)
                dev_dbg(&intf->dev, "%*ph\n", 16, &state->eeprom[i]);

        /* check for dual tuner mode */
        tmp = state->eeprom[EEPROM_TS_MODE];
        ts_mode_invalid = 0;
        switch (tmp) {
        case 0:
                break;
        case 1:
        case 3:
                state->dual_mode = true;
                break;
        case 5:
                if (state->chip_type != 0x9135 && state->chip_type != 0x9306)
                        state->dual_mode = true;        /* AF9035 */
                else
                        ts_mode_invalid = 1;
                break;
        default:
                ts_mode_invalid = 1;
        }

        dev_dbg(&intf->dev, "ts mode=%d dual mode=%d\n", tmp, state->dual_mode);

        if (ts_mode_invalid)
                dev_info(&intf->dev, "ts mode=%d not supported, defaulting to single tuner mode!", tmp);

check_firmware_status:
        ret = af9035_ctrl_msg(d, &req);
        if (ret < 0)
                goto err;

        dev_dbg(&intf->dev, "reply=%*ph\n", 4, rbuf);
        if (rbuf[0] || rbuf[1] || rbuf[2] || rbuf[3])
                ret = WARM;
        else
                ret = COLD;

        return ret;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int af9035_download_firmware_old(struct dvb_usb_device *d,
                const struct firmware *fw)
{
        struct usb_interface *intf = d->intf;
        int ret, i, j, len;
        u8 wbuf[1];
        struct usb_req req = { 0, 0, 0, NULL, 0, NULL };
        struct usb_req req_fw_dl = { CMD_FW_DL, 0, 0, wbuf, 0, NULL };
        u8 hdr_core;
        u16 hdr_addr, hdr_data_len, hdr_checksum;
        #define MAX_DATA 58
        #define HDR_SIZE 7

        /*
         * Thanks to Daniel Glöckner <daniel-gl@gmx.net> about that info!
         *
         * byte 0: MCS 51 core
         *  There are two inside the AF9035 (1=Link and 2=OFDM) with separate
         *  address spaces
         * byte 1-2: Big endian destination address
         * byte 3-4: Big endian number of data bytes following the header
         * byte 5-6: Big endian header checksum, apparently ignored by the chip
         *  Calculated as ~(h[0]*256+h[1]+h[2]*256+h[3]+h[4]*256)
         */

        for (i = fw->size; i > HDR_SIZE;) {
                hdr_core = fw->data[fw->size - i + 0];
                hdr_addr = fw->data[fw->size - i + 1] << 8;
                hdr_addr |= fw->data[fw->size - i + 2] << 0;
                hdr_data_len = fw->data[fw->size - i + 3] << 8;
                hdr_data_len |= fw->data[fw->size - i + 4] << 0;
                hdr_checksum = fw->data[fw->size - i + 5] << 8;
                hdr_checksum |= fw->data[fw->size - i + 6] << 0;

                dev_dbg(&intf->dev, "core=%d addr=%04x data_len=%d checksum=%04x\n",
                        hdr_core, hdr_addr, hdr_data_len, hdr_checksum);

                if (((hdr_core != 1) && (hdr_core != 2)) ||
                                (hdr_data_len > i)) {
                        dev_dbg(&intf->dev, "bad firmware\n");
                        break;
                }

                /* download begin packet */
                req.cmd = CMD_FW_DL_BEGIN;
                ret = af9035_ctrl_msg(d, &req);
                if (ret < 0)
                        goto err;

                /* download firmware packet(s) */
                for (j = HDR_SIZE + hdr_data_len; j > 0; j -= MAX_DATA) {
                        len = j;
                        if (len > MAX_DATA)
                                len = MAX_DATA;
                        req_fw_dl.wlen = len;
                        req_fw_dl.wbuf = (u8 *) &fw->data[fw->size - i +
                                        HDR_SIZE + hdr_data_len - j];
                        ret = af9035_ctrl_msg(d, &req_fw_dl);
                        if (ret < 0)
                                goto err;
                }

                /* download end packet */
                req.cmd = CMD_FW_DL_END;
                ret = af9035_ctrl_msg(d, &req);
                if (ret < 0)
                        goto err;

                i -= hdr_data_len + HDR_SIZE;

                dev_dbg(&intf->dev, "data uploaded=%zu\n", fw->size - i);
        }

        /* print warn if firmware is bad, continue and see what happens */
        if (i)
                dev_warn(&intf->dev, "bad firmware\n");

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int af9035_download_firmware_new(struct dvb_usb_device *d,
                const struct firmware *fw)
{
        struct usb_interface *intf = d->intf;
        int ret, i, i_prev;
        struct usb_req req_fw_dl = { CMD_FW_SCATTER_WR, 0, 0, NULL, 0, NULL };
        #define HDR_SIZE 7

        /*
         * There seems to be following firmware header. Meaning of bytes 0-3
         * is unknown.
         *
         * 0: 3
         * 1: 0, 1
         * 2: 0
         * 3: 1, 2, 3
         * 4: addr MSB
         * 5: addr LSB
         * 6: count of data bytes ?
         */
        for (i = HDR_SIZE, i_prev = 0; i <= fw->size; i++) {
                if (i == fw->size ||
                                (fw->data[i + 0] == 0x03 &&
                                (fw->data[i + 1] == 0x00 ||
                                fw->data[i + 1] == 0x01) &&
                                fw->data[i + 2] == 0x00)) {
                        req_fw_dl.wlen = i - i_prev;
                        req_fw_dl.wbuf = (u8 *) &fw->data[i_prev];
                        i_prev = i;
                        ret = af9035_ctrl_msg(d, &req_fw_dl);
                        if (ret < 0)
                                goto err;

                        dev_dbg(&intf->dev, "data uploaded=%d\n", i);
                }
        }

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int af9035_download_firmware(struct dvb_usb_device *d,
                const struct firmware *fw)
{
        struct usb_interface *intf = d->intf;
        struct state *state = d_to_priv(d);
        int ret;
        u8 wbuf[1];
        u8 rbuf[4];
        u8 tmp;
        struct usb_req req = { 0, 0, 0, NULL, 0, NULL };
        struct usb_req req_fw_ver = { CMD_FW_QUERYINFO, 0, 1, wbuf, 4, rbuf };

        dev_dbg(&intf->dev, "\n");

        /*
         * In case of dual tuner configuration we need to do some extra
         * initialization in order to download firmware to slave demod too,
         * which is done by master demod.
         * Master feeds also clock and controls power via GPIO.
         */
        if (state->dual_mode) {
                /* configure gpioh1, reset & power slave demod */
                ret = af9035_wr_reg_mask(d, 0x00d8b0, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0x00d8b1, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0x00d8af, 0x00, 0x01);
                if (ret < 0)
                        goto err;

                usleep_range(10000, 50000);

                ret = af9035_wr_reg_mask(d, 0x00d8af, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                /* tell the slave I2C address */
                tmp = state->eeprom[EEPROM_2ND_DEMOD_ADDR];

                /* Use default I2C address if eeprom has no address set */
                if (!tmp)
                        tmp = 0x1d << 1; /* 8-bit format used by chip */

                if ((state->chip_type == 0x9135) ||
                                (state->chip_type == 0x9306)) {
                        ret = af9035_wr_reg(d, 0x004bfb, tmp);
                        if (ret < 0)
                                goto err;
                } else {
                        ret = af9035_wr_reg(d, 0x00417f, tmp);
                        if (ret < 0)
                                goto err;

                        /* enable clock out */
                        ret = af9035_wr_reg_mask(d, 0x00d81a, 0x01, 0x01);
                        if (ret < 0)
                                goto err;
                }
        }

        if (fw->data[0] == 0x01)
                ret = af9035_download_firmware_old(d, fw);
        else
                ret = af9035_download_firmware_new(d, fw);
        if (ret < 0)
                goto err;

        /* firmware loaded, request boot */
        req.cmd = CMD_FW_BOOT;
        ret = af9035_ctrl_msg(d, &req);
        if (ret < 0)
                goto err;

        /* ensure firmware starts */
        wbuf[0] = 1;
        ret = af9035_ctrl_msg(d, &req_fw_ver);
        if (ret < 0)
                goto err;

        if (!(rbuf[0] || rbuf[1] || rbuf[2] || rbuf[3])) {
                dev_err(&intf->dev, "firmware did not run\n");
                ret = -ENODEV;
                goto err;
        }

        dev_info(&intf->dev, "firmware version=%d.%d.%d.%d",
                 rbuf[0], rbuf[1], rbuf[2], rbuf[3]);

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int af9035_read_config(struct dvb_usb_device *d)
{
        struct usb_interface *intf = d->intf;
        struct state *state = d_to_priv(d);
        int ret, i;
        u8 tmp;
        u16 tmp16;

        /* Demod I2C address */
        state->af9033_i2c_addr[0] = 0x1c;
        state->af9033_i2c_addr[1] = 0x1d;
        state->af9033_config[0].adc_multiplier = AF9033_ADC_MULTIPLIER_2X;
        state->af9033_config[1].adc_multiplier = AF9033_ADC_MULTIPLIER_2X;
        state->af9033_config[0].ts_mode = AF9033_TS_MODE_USB;
        state->af9033_config[1].ts_mode = AF9033_TS_MODE_SERIAL;
        state->it930x_addresses = 0;

        if (state->chip_type == 0x9135) {
                /* feed clock for integrated RF tuner */
                state->af9033_config[0].dyn0_clk = true;
                state->af9033_config[1].dyn0_clk = true;

                if (state->chip_version == 0x02) {
                        state->af9033_config[0].tuner = AF9033_TUNER_IT9135_60;
                        state->af9033_config[1].tuner = AF9033_TUNER_IT9135_60;
                } else {
                        state->af9033_config[0].tuner = AF9033_TUNER_IT9135_38;
                        state->af9033_config[1].tuner = AF9033_TUNER_IT9135_38;
                }

                if (state->no_eeprom) {
                        /* Remote controller to NEC polling by default */
                        state->ir_mode = 0x05;
                        state->ir_type = 0x00;

                        goto skip_eeprom;
                }
        } else if (state->chip_type == 0x9306) {
                /*
                 * IT930x is an USB bridge, only single demod-single tuner
                 * configurations seen so far.
                 */
                if ((le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_AVERMEDIA) &&
                    (le16_to_cpu(d->udev->descriptor.idProduct) == USB_PID_AVERMEDIA_TD310)) {
                        state->it930x_addresses = 1;
                        /* TD310 RC works with NEC defaults */
                        state->ir_mode = 0x05;
                        state->ir_type = 0x00;
                }
                return 0;
        }

        /* Remote controller */
        state->ir_mode = state->eeprom[EEPROM_IR_MODE];
        state->ir_type = state->eeprom[EEPROM_IR_TYPE];

        if (state->dual_mode) {
                /* Read 2nd demodulator I2C address. 8-bit format on eeprom */
                tmp = state->eeprom[EEPROM_2ND_DEMOD_ADDR];
                if (tmp)
                        state->af9033_i2c_addr[1] = tmp >> 1;

                dev_dbg(&intf->dev, "2nd demod I2C addr=%02x\n",
                        state->af9033_i2c_addr[1]);
        }

        for (i = 0; i < state->dual_mode + 1; i++) {
                unsigned int eeprom_offset = 0;

                /* tuner */
                tmp = state->eeprom[EEPROM_1_TUNER_ID + eeprom_offset];
                dev_dbg(&intf->dev, "[%d]tuner=%02x\n", i, tmp);

                /* tuner sanity check */
                if (state->chip_type == 0x9135) {
                        if (state->chip_version == 0x02) {
                                /* IT9135 BX (v2) */
                                switch (tmp) {
                                case AF9033_TUNER_IT9135_60:
                                case AF9033_TUNER_IT9135_61:
                                case AF9033_TUNER_IT9135_62:
                                        state->af9033_config[i].tuner = tmp;
                                        break;
                                }
                        } else {
                                /* IT9135 AX (v1) */
                                switch (tmp) {
                                case AF9033_TUNER_IT9135_38:
                                case AF9033_TUNER_IT9135_51:
                                case AF9033_TUNER_IT9135_52:
                                        state->af9033_config[i].tuner = tmp;
                                        break;
                                }
                        }
                } else {
                        /* AF9035 */
                        state->af9033_config[i].tuner = tmp;
                }

                if (state->af9033_config[i].tuner != tmp) {
                        dev_info(&intf->dev, "[%d] overriding tuner from %02x to %02x\n",
                                 i, tmp, state->af9033_config[i].tuner);
                }

                switch (state->af9033_config[i].tuner) {
                case AF9033_TUNER_TUA9001:
                case AF9033_TUNER_FC0011:
                case AF9033_TUNER_MXL5007T:
                case AF9033_TUNER_TDA18218:
                case AF9033_TUNER_FC2580:
                case AF9033_TUNER_FC0012:
                        state->af9033_config[i].spec_inv = 1;
                        break;
                case AF9033_TUNER_IT9135_38:
                case AF9033_TUNER_IT9135_51:
                case AF9033_TUNER_IT9135_52:
                case AF9033_TUNER_IT9135_60:
                case AF9033_TUNER_IT9135_61:
                case AF9033_TUNER_IT9135_62:
                        break;
                default:
                        dev_warn(&intf->dev, "tuner id=%02x not supported, please report!",
                                 tmp);
                }

                /* disable dual mode if driver does not support it */
                if (i == 1)
                        switch (state->af9033_config[i].tuner) {
                        case AF9033_TUNER_FC0012:
                        case AF9033_TUNER_IT9135_38:
                        case AF9033_TUNER_IT9135_51:
                        case AF9033_TUNER_IT9135_52:
                        case AF9033_TUNER_IT9135_60:
                        case AF9033_TUNER_IT9135_61:
                        case AF9033_TUNER_IT9135_62:
                        case AF9033_TUNER_MXL5007T:
                                break;
                        default:
                                state->dual_mode = false;
                                dev_info(&intf->dev, "driver does not support 2nd tuner and will disable it");
                }

                /* tuner IF frequency */
                tmp = state->eeprom[EEPROM_1_IF_L + eeprom_offset];
                tmp16 = tmp << 0;
                tmp = state->eeprom[EEPROM_1_IF_H + eeprom_offset];
                tmp16 |= tmp << 8;
                dev_dbg(&intf->dev, "[%d]IF=%d\n", i, tmp16);

                eeprom_offset += 0x10; /* shift for the 2nd tuner params */
        }

skip_eeprom:
        /* get demod clock */
        ret = af9035_rd_reg(d, 0x00d800, &tmp);
        if (ret < 0)
                goto err;

        tmp = (tmp >> 0) & 0x0f;

        for (i = 0; i < ARRAY_SIZE(state->af9033_config); i++) {
                if (state->chip_type == 0x9135)
                        state->af9033_config[i].clock = clock_lut_it9135[tmp];
                else
                        state->af9033_config[i].clock = clock_lut_af9035[tmp];
        }

        state->no_read = false;
        /* Some MXL5007T devices cannot properly handle tuner I2C read ops. */
        if (state->af9033_config[0].tuner == AF9033_TUNER_MXL5007T &&
                le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_AVERMEDIA)

                switch (le16_to_cpu(d->udev->descriptor.idProduct)) {
                case USB_PID_AVERMEDIA_A867:
                case USB_PID_AVERMEDIA_TWINSTAR:
                        dev_info(&intf->dev,
                                 "Device may have issues with I2C read operations. Enabling fix.\n");
                        state->no_read = true;
                        break;
                }

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int af9035_tua9001_tuner_callback(struct dvb_usb_device *d,
                int cmd, int arg)
{
        struct usb_interface *intf = d->intf;
        int ret;
        u8 val;

        dev_dbg(&intf->dev, "cmd=%d arg=%d\n", cmd, arg);

        /*
         * CEN     always enabled by hardware wiring
         * RESETN  GPIOT3
         * RXEN    GPIOT2
         */

        switch (cmd) {
        case TUA9001_CMD_RESETN:
                if (arg)
                        val = 0x00;
                else
                        val = 0x01;

                ret = af9035_wr_reg_mask(d, 0x00d8e7, val, 0x01);
                if (ret < 0)
                        goto err;
                break;
        case TUA9001_CMD_RXEN:
                if (arg)
                        val = 0x01;
                else
                        val = 0x00;

                ret = af9035_wr_reg_mask(d, 0x00d8eb, val, 0x01);
                if (ret < 0)
                        goto err;
                break;
        }

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}


static int af9035_fc0011_tuner_callback(struct dvb_usb_device *d,
                int cmd, int arg)
{
        struct usb_interface *intf = d->intf;
        int ret;

        switch (cmd) {
        case FC0011_FE_CALLBACK_POWER:
                /* Tuner enable */
                ret = af9035_wr_reg_mask(d, 0xd8eb, 1, 1);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0xd8ec, 1, 1);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0xd8ed, 1, 1);
                if (ret < 0)
                        goto err;

                /* LED */
                ret = af9035_wr_reg_mask(d, 0xd8d0, 1, 1);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0xd8d1, 1, 1);
                if (ret < 0)
                        goto err;

                usleep_range(10000, 50000);
                break;
        case FC0011_FE_CALLBACK_RESET:
                ret = af9035_wr_reg(d, 0xd8e9, 1);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg(d, 0xd8e8, 1);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg(d, 0xd8e7, 1);
                if (ret < 0)
                        goto err;

                usleep_range(10000, 20000);

                ret = af9035_wr_reg(d, 0xd8e7, 0);
                if (ret < 0)
                        goto err;

                usleep_range(10000, 20000);
                break;
        default:
                ret = -EINVAL;
                goto err;
        }

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int af9035_tuner_callback(struct dvb_usb_device *d, int cmd, int arg)
{
        struct state *state = d_to_priv(d);

        switch (state->af9033_config[0].tuner) {
        case AF9033_TUNER_FC0011:
                return af9035_fc0011_tuner_callback(d, cmd, arg);
        case AF9033_TUNER_TUA9001:
                return af9035_tua9001_tuner_callback(d, cmd, arg);
        default:
                break;
        }

        return 0;
}

static int af9035_frontend_callback(void *adapter_priv, int component,
                                    int cmd, int arg)
{
        struct i2c_adapter *adap = adapter_priv;
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        struct usb_interface *intf = d->intf;

        dev_dbg(&intf->dev, "component=%d cmd=%d arg=%d\n",
                component, cmd, arg);

        switch (component) {
        case DVB_FRONTEND_COMPONENT_TUNER:
                return af9035_tuner_callback(d, cmd, arg);
        default:
                break;
        }

        return 0;
}

static int af9035_get_adapter_count(struct dvb_usb_device *d)
{
        struct state *state = d_to_priv(d);

        return state->dual_mode + 1;
}

static int af9035_frontend_attach(struct dvb_usb_adapter *adap)
{
        struct state *state = adap_to_priv(adap);
        struct dvb_usb_device *d = adap_to_d(adap);
        struct usb_interface *intf = d->intf;
        int ret;

        dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);

        if (!state->af9033_config[adap->id].tuner) {
                /* unsupported tuner */
                ret = -ENODEV;
                goto err;
        }

        state->af9033_config[adap->id].fe = &adap->fe[0];
        state->af9033_config[adap->id].ops = &state->ops;
        ret = af9035_add_i2c_dev(d, "af9033", state->af9033_i2c_addr[adap->id],
                        &state->af9033_config[adap->id], &d->i2c_adap);
        if (ret)
                goto err;

        if (adap->fe[0] == NULL) {
                ret = -ENODEV;
                goto err;
        }

        /* disable I2C-gate */
        adap->fe[0]->ops.i2c_gate_ctrl = NULL;
        adap->fe[0]->callback = af9035_frontend_callback;

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

/*
 * The I2C speed register is calculated with:
 *      I2C speed register = (1000000000 / (24.4 * 16 * I2C_speed))
 *
 * The default speed register for it930x is 7, with means a
 * speed of ~366 kbps
 */
#define I2C_SPEED_366K 7

static int it930x_frontend_attach(struct dvb_usb_adapter *adap)
{
        struct state *state = adap_to_priv(adap);
        struct dvb_usb_device *d = adap_to_d(adap);
        struct usb_interface *intf = d->intf;
        int ret;
        struct si2168_config si2168_config;
        struct i2c_adapter *adapter;

        dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);

        /* I2C master bus 2 clock speed 366k */
        ret = af9035_wr_reg(d, 0x00f6a7, I2C_SPEED_366K);
        if (ret < 0)
                goto err;

        /* I2C master bus 1,3 clock speed 366k */
        ret = af9035_wr_reg(d, 0x00f103, I2C_SPEED_366K);
        if (ret < 0)
                goto err;

        /* set gpio11 low */
        ret = af9035_wr_reg_mask(d, 0xd8d4, 0x01, 0x01);
        if (ret < 0)
                goto err;

        ret = af9035_wr_reg_mask(d, 0xd8d5, 0x01, 0x01);
        if (ret < 0)
                goto err;

        ret = af9035_wr_reg_mask(d, 0xd8d3, 0x01, 0x01);
        if (ret < 0)
                goto err;

        /* Tuner enable using gpiot2_en, gpiot2_on and gpiot2_o (reset) */
        ret = af9035_wr_reg_mask(d, 0xd8b8, 0x01, 0x01);
        if (ret < 0)
                goto err;

        ret = af9035_wr_reg_mask(d, 0xd8b9, 0x01, 0x01);
        if (ret < 0)
                goto err;

        ret = af9035_wr_reg_mask(d, 0xd8b7, 0x00, 0x01);
        if (ret < 0)
                goto err;

        msleep(200);

        ret = af9035_wr_reg_mask(d, 0xd8b7, 0x01, 0x01);
        if (ret < 0)
                goto err;

        memset(&si2168_config, 0, sizeof(si2168_config));
        si2168_config.i2c_adapter = &adapter;
        si2168_config.fe = &adap->fe[0];
        si2168_config.ts_mode = SI2168_TS_SERIAL;

        state->af9033_config[adap->id].fe = &adap->fe[0];
        state->af9033_config[adap->id].ops = &state->ops;
        ret = af9035_add_i2c_dev(d, "si2168",
                                 it930x_addresses_table[state->it930x_addresses].frontend_i2c_addr,
                                 &si2168_config, &d->i2c_adap);
        if (ret)
                goto err;

        if (adap->fe[0] == NULL) {
                ret = -ENODEV;
                goto err;
        }
        state->i2c_adapter_demod = adapter;

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int af9035_frontend_detach(struct dvb_usb_adapter *adap)
{
        struct state *state = adap_to_priv(adap);
        struct dvb_usb_device *d = adap_to_d(adap);
        struct usb_interface *intf = d->intf;

        dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);

        if (adap->id == 1) {
                if (state->i2c_client[1])
                        af9035_del_i2c_dev(d);
        } else if (adap->id == 0) {
                if (state->i2c_client[0])
                        af9035_del_i2c_dev(d);
        }

        return 0;
}

static const struct fc0011_config af9035_fc0011_config = {
        .i2c_address = 0x60,
};

static struct mxl5007t_config af9035_mxl5007t_config[] = {
        {
                .xtal_freq_hz = MxL_XTAL_24_MHZ,
                .if_freq_hz = MxL_IF_4_57_MHZ,
                .invert_if = 0,
                .loop_thru_enable = 0,
                .clk_out_enable = 0,
                .clk_out_amp = MxL_CLKOUT_AMP_0_94V,
        }, {
                .xtal_freq_hz = MxL_XTAL_24_MHZ,
                .if_freq_hz = MxL_IF_4_57_MHZ,
                .invert_if = 0,
                .loop_thru_enable = 1,
                .clk_out_enable = 1,
                .clk_out_amp = MxL_CLKOUT_AMP_0_94V,
        }
};

static struct tda18218_config af9035_tda18218_config = {
        .i2c_address = 0x60,
        .i2c_wr_max = 21,
};

static const struct fc0012_config af9035_fc0012_config[] = {
        {
                .i2c_address = 0x63,
                .xtal_freq = FC_XTAL_36_MHZ,
                .dual_master = true,
                .loop_through = true,
                .clock_out = true,
        }, {
                .i2c_address = 0x63 | 0x80, /* I2C bus select hack */
                .xtal_freq = FC_XTAL_36_MHZ,
                .dual_master = true,
        }
};

static int af9035_tuner_attach(struct dvb_usb_adapter *adap)
{
        struct state *state = adap_to_priv(adap);
        struct dvb_usb_device *d = adap_to_d(adap);
        struct usb_interface *intf = d->intf;
        int ret;
        struct dvb_frontend *fe;
        struct i2c_msg msg[1];
        u8 tuner_addr;

        dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);

        /*
         * XXX: Hack used in that function: we abuse unused I2C address bit [7]
         * to carry info about used I2C bus for dual tuner configuration.
         */

        switch (state->af9033_config[adap->id].tuner) {
        case AF9033_TUNER_TUA9001: {
                struct tua9001_platform_data tua9001_pdata = {
                        .dvb_frontend = adap->fe[0],
                };

                /*
                 * AF9035 gpiot3 = TUA9001 RESETN
                 * AF9035 gpiot2 = TUA9001 RXEN
                 */

                /* configure gpiot2 and gpiot2 as output */
                ret = af9035_wr_reg_mask(d, 0x00d8ec, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0x00d8ed, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0x00d8e8, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0x00d8e9, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                /* attach tuner */
                ret = af9035_add_i2c_dev(d, "tua9001", 0x60, &tua9001_pdata,
                                         &d->i2c_adap);
                if (ret)
                        goto err;

                fe = adap->fe[0];
                break;
        }
        case AF9033_TUNER_FC0011:
                fe = dvb_attach(fc0011_attach, adap->fe[0],
                                &d->i2c_adap, &af9035_fc0011_config);
                break;
        case AF9033_TUNER_MXL5007T:
                if (adap->id == 0) {
                        ret = af9035_wr_reg(d, 0x00d8e0, 1);
                        if (ret < 0)
                                goto err;

                        ret = af9035_wr_reg(d, 0x00d8e1, 1);
                        if (ret < 0)
                                goto err;

                        ret = af9035_wr_reg(d, 0x00d8df, 0);
                        if (ret < 0)
                                goto err;

                        msleep(30);

                        ret = af9035_wr_reg(d, 0x00d8df, 1);
                        if (ret < 0)
                                goto err;

                        msleep(300);

                        ret = af9035_wr_reg(d, 0x00d8c0, 1);
                        if (ret < 0)
                                goto err;

                        ret = af9035_wr_reg(d, 0x00d8c1, 1);
                        if (ret < 0)
                                goto err;

                        ret = af9035_wr_reg(d, 0x00d8bf, 0);
                        if (ret < 0)
                                goto err;

                        ret = af9035_wr_reg(d, 0x00d8b4, 1);
                        if (ret < 0)
                                goto err;

                        ret = af9035_wr_reg(d, 0x00d8b5, 1);
                        if (ret < 0)
                                goto err;

                        ret = af9035_wr_reg(d, 0x00d8b3, 1);
                        if (ret < 0)
                                goto err;

                        tuner_addr = 0x60;
                } else {
                        tuner_addr = 0x60 | 0x80; /* I2C bus hack */
                }

                /* attach tuner */
                fe = dvb_attach(mxl5007t_attach, adap->fe[0], &d->i2c_adap,
                                tuner_addr, &af9035_mxl5007t_config[adap->id]);
                break;
        case AF9033_TUNER_TDA18218:
                /* attach tuner */
                fe = dvb_attach(tda18218_attach, adap->fe[0],
                                &d->i2c_adap, &af9035_tda18218_config);
                break;
        case AF9033_TUNER_FC2580: {
                struct fc2580_platform_data fc2580_pdata = {
                        .dvb_frontend = adap->fe[0],
                };

                /* Tuner enable using gpiot2_o, gpiot2_en and gpiot2_on  */
                ret = af9035_wr_reg_mask(d, 0xd8eb, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0xd8ec, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                ret = af9035_wr_reg_mask(d, 0xd8ed, 0x01, 0x01);
                if (ret < 0)
                        goto err;

                usleep_range(10000, 50000);
                /* attach tuner */
                ret = af9035_add_i2c_dev(d, "fc2580", 0x56, &fc2580_pdata,
                                         &d->i2c_adap);
                if (ret)
                        goto err;

                fe = adap->fe[0];
                break;
        }
        case AF9033_TUNER_FC0012:
                /*
                 * AF9035 gpiot2 = FC0012 enable
                 * XXX: there seems to be something on gpioh8 too, but on my
                 * test I didn't find any difference.
                 */

                if (adap->id == 0) {
                        /* configure gpiot2 as output and high */
                        ret = af9035_wr_reg_mask(d, 0xd8eb, 0x01, 0x01);
                        if (ret < 0)
                                goto err;

                        ret = af9035_wr_reg_mask(d, 0xd8ec, 0x01, 0x01);
                        if (ret < 0)
                                goto err;

                        ret = af9035_wr_reg_mask(d, 0xd8ed, 0x01, 0x01);
                        if (ret < 0)
                                goto err;
                } else {
                        /*
                         * FIXME: That belongs for the FC0012 driver.
                         * Write 02 to FC0012 master tuner register 0d directly
                         * in order to make slave tuner working.
                         */
                        msg[0].addr = 0x63;
                        msg[0].flags = 0;
                        msg[0].len = 2;
                        msg[0].buf = "\x0d\x02";
                        ret = i2c_transfer(&d->i2c_adap, msg, 1);
                        if (ret < 0)
                                goto err;
                }

                usleep_range(10000, 50000);

                fe = dvb_attach(fc0012_attach, adap->fe[0], &d->i2c_adap,
                                &af9035_fc0012_config[adap->id]);
                break;
        case AF9033_TUNER_IT9135_38:
        case AF9033_TUNER_IT9135_51:
        case AF9033_TUNER_IT9135_52:
        case AF9033_TUNER_IT9135_60:
        case AF9033_TUNER_IT9135_61:
        case AF9033_TUNER_IT9135_62:
        {
                struct platform_device *pdev;
                const char *name;
                struct it913x_platform_data it913x_pdata = {
                        .regmap = state->af9033_config[adap->id].regmap,
                        .fe = adap->fe[0],
                };

                switch (state->af9033_config[adap->id].tuner) {
                case AF9033_TUNER_IT9135_38:
                case AF9033_TUNER_IT9135_51:
                case AF9033_TUNER_IT9135_52:
                        name = "it9133ax-tuner";
                        break;
                case AF9033_TUNER_IT9135_60:
                case AF9033_TUNER_IT9135_61:
                case AF9033_TUNER_IT9135_62:
                        name = "it9133bx-tuner";
                        break;
                default:
                        ret = -ENODEV;
                        goto err;
                }

                if (state->dual_mode) {
                        if (adap->id == 0)
                                it913x_pdata.role = IT913X_ROLE_DUAL_MASTER;
                        else
                                it913x_pdata.role = IT913X_ROLE_DUAL_SLAVE;
                } else {
                        it913x_pdata.role = IT913X_ROLE_SINGLE;
                }

                request_module("%s", "it913x");
                pdev = platform_device_register_data(&d->intf->dev, name,
                                                     PLATFORM_DEVID_AUTO,
                                                     &it913x_pdata,
                                                     sizeof(it913x_pdata));
                if (IS_ERR(pdev) || !pdev->dev.driver) {
                        ret = -ENODEV;
                        goto err;
                }
                if (!try_module_get(pdev->dev.driver->owner)) {
                        platform_device_unregister(pdev);
                        ret = -ENODEV;
                        goto err;
                }

                state->platform_device_tuner[adap->id] = pdev;
                fe = adap->fe[0];
                break;
        }
        default:
                fe = NULL;
        }

        if (fe == NULL) {
                ret = -ENODEV;
                goto err;
        }

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int it930x_tuner_attach(struct dvb_usb_adapter *adap)
{
        struct state *state = adap_to_priv(adap);
        struct dvb_usb_device *d = adap_to_d(adap);
        struct usb_interface *intf = d->intf;
        int ret;
        struct si2157_config si2157_config;

        dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);

        memset(&si2157_config, 0, sizeof(si2157_config));
        si2157_config.fe = adap->fe[0];

        /*
         * HACK: The Logilink VG0022A and TerraTec TC2 Stick have
         * a bug: when the si2157 firmware that came with the device
         * is replaced by a new one, the I2C transfers to the tuner
         * will return just 0xff.
         *
         * Probably, the vendor firmware has some patch specifically
         * designed for this device. So, we can't replace by the
         * generic firmware. The right solution would be to extract
         * the si2157 firmware from the original driver and ask the
         * driver to load the specifically designed firmware, but,
         * while we don't have that, the next best solution is to just
         * keep the original firmware at the device.
         */
        if ((le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_DEXATEK &&
             le16_to_cpu(d->udev->descriptor.idProduct) == 0x0100) ||
            (le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_TERRATEC &&
             le16_to_cpu(d->udev->descriptor.idProduct) == USB_PID_TERRATEC_CINERGY_TC2_STICK))
                si2157_config.dont_load_firmware = true;

        si2157_config.if_port = it930x_addresses_table[state->it930x_addresses].tuner_if_port;
        ret = af9035_add_i2c_dev(d, "si2157",
                                 it930x_addresses_table[state->it930x_addresses].tuner_i2c_addr,
                                 &si2157_config, state->i2c_adapter_demod);
        if (ret)
                goto err;

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}


static int it930x_tuner_detach(struct dvb_usb_adapter *adap)
{
        struct state *state = adap_to_priv(adap);
        struct dvb_usb_device *d = adap_to_d(adap);
        struct usb_interface *intf = d->intf;

        dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);

        if (adap->id == 1) {
                if (state->i2c_client[3])
                        af9035_del_i2c_dev(d);
        } else if (adap->id == 0) {
                if (state->i2c_client[1])
                        af9035_del_i2c_dev(d);
        }

        return 0;
}


static int af9035_tuner_detach(struct dvb_usb_adapter *adap)
{
        struct state *state = adap_to_priv(adap);
        struct dvb_usb_device *d = adap_to_d(adap);
        struct usb_interface *intf = d->intf;

        dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);

        switch (state->af9033_config[adap->id].tuner) {
        case AF9033_TUNER_TUA9001:
        case AF9033_TUNER_FC2580:
                if (adap->id == 1) {
                        if (state->i2c_client[3])
                                af9035_del_i2c_dev(d);
                } else if (adap->id == 0) {
                        if (state->i2c_client[1])
                                af9035_del_i2c_dev(d);
                }
                break;
        case AF9033_TUNER_IT9135_38:
        case AF9033_TUNER_IT9135_51:
        case AF9033_TUNER_IT9135_52:
        case AF9033_TUNER_IT9135_60:
        case AF9033_TUNER_IT9135_61:
        case AF9033_TUNER_IT9135_62:
        {
                struct platform_device *pdev;

                pdev = state->platform_device_tuner[adap->id];
                if (pdev) {
                        module_put(pdev->dev.driver->owner);
                        platform_device_unregister(pdev);
                }
                break;
        }
        }

        return 0;
}

static int af9035_init(struct dvb_usb_device *d)
{
        struct state *state = d_to_priv(d);
        struct usb_interface *intf = d->intf;
        int ret, i;
        u16 frame_size = (d->udev->speed == USB_SPEED_FULL ? 5 : 87) * 188 / 4;
        u8 packet_size = (d->udev->speed == USB_SPEED_FULL ? 64 : 512) / 4;
        struct reg_val_mask tab[] = {
                { 0x80f99d, 0x01, 0x01 },
                { 0x80f9a4, 0x01, 0x01 },
                { 0x00dd11, 0x00, 0x20 },
                { 0x00dd11, 0x00, 0x40 },
                { 0x00dd13, 0x00, 0x20 },
                { 0x00dd13, 0x00, 0x40 },
                { 0x00dd11, 0x20, 0x20 },
                { 0x00dd88, (frame_size >> 0) & 0xff, 0xff},
                { 0x00dd89, (frame_size >> 8) & 0xff, 0xff},
                { 0x00dd0c, packet_size, 0xff},
                { 0x00dd11, state->dual_mode << 6, 0x40 },
                { 0x00dd8a, (frame_size >> 0) & 0xff, 0xff},
                { 0x00dd8b, (frame_size >> 8) & 0xff, 0xff},
                { 0x00dd0d, packet_size, 0xff },
                { 0x80f9a3, state->dual_mode, 0x01 },
                { 0x80f9cd, state->dual_mode, 0x01 },
                { 0x80f99d, 0x00, 0x01 },
                { 0x80f9a4, 0x00, 0x01 },
        };

        dev_dbg(&intf->dev, "USB speed=%d frame_size=%04x packet_size=%02x\n",
                d->udev->speed, frame_size, packet_size);

        /* init endpoints */
        for (i = 0; i < ARRAY_SIZE(tab); i++) {
                ret = af9035_wr_reg_mask(d, tab[i].reg, tab[i].val,
                                tab[i].mask);
                if (ret < 0)
                        goto err;
        }

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int it930x_init(struct dvb_usb_device *d)
{
        struct state *state = d_to_priv(d);
        struct usb_interface *intf = d->intf;
        int ret, i;
        u16 frame_size = (d->udev->speed == USB_SPEED_FULL ? 5 : 816) * 188 / 4;
        u8 packet_size = (d->udev->speed == USB_SPEED_FULL ? 64 : 512) / 4;
        struct reg_val_mask tab[] = {
                { 0x00da1a, 0x00, 0x01 }, /* ignore_sync_byte */
                { 0x00f41f, 0x04, 0x04 }, /* dvbt_inten */
                { 0x00da10, 0x00, 0x01 }, /* mpeg_full_speed */
                { 0x00f41a, 0x01, 0x01 }, /* dvbt_en */
                { 0x00da1d, 0x01, 0x01 }, /* mp2_sw_rst, reset EP4 */
                { 0x00dd11, 0x00, 0x20 }, /* ep4_tx_en, disable EP4 */
                { 0x00dd13, 0x00, 0x20 }, /* ep4_tx_nak, disable EP4 NAK */
                { 0x00dd11, 0x20, 0x20 }, /* ep4_tx_en, enable EP4 */
                { 0x00dd11, 0x00, 0x40 }, /* ep5_tx_en, disable EP5 */
                { 0x00dd13, 0x00, 0x40 }, /* ep5_tx_nak, disable EP5 NAK */
                { 0x00dd11, state->dual_mode << 6, 0x40 }, /* enable EP5 */
                { 0x00dd88, (frame_size >> 0) & 0xff, 0xff},
                { 0x00dd89, (frame_size >> 8) & 0xff, 0xff},
                { 0x00dd0c, packet_size, 0xff},
                { 0x00dd8a, (frame_size >> 0) & 0xff, 0xff},
                { 0x00dd8b, (frame_size >> 8) & 0xff, 0xff},
                { 0x00dd0d, packet_size, 0xff },
                { 0x00da1d, 0x00, 0x01 }, /* mp2_sw_rst, disable */
                { 0x00d833, 0x01, 0xff }, /* slew rate ctrl: slew rate boosts */
                { 0x00d830, 0x00, 0xff }, /* Bit 0 of output driving control */
                { 0x00d831, 0x01, 0xff }, /* Bit 1 of output driving control */
                { 0x00d832, 0x00, 0xff }, /* Bit 2 of output driving control */

                /* suspend gpio1 for TS-C */
                { 0x00d8b0, 0x01, 0xff }, /* gpio1 */
                { 0x00d8b1, 0x01, 0xff }, /* gpio1 */
                { 0x00d8af, 0x00, 0xff }, /* gpio1 */

                /* suspend gpio7 for TS-D */
                { 0x00d8c4, 0x01, 0xff }, /* gpio7 */
                { 0x00d8c5, 0x01, 0xff }, /* gpio7 */
                { 0x00d8c3, 0x00, 0xff }, /* gpio7 */

                /* suspend gpio13 for TS-B */
                { 0x00d8dc, 0x01, 0xff }, /* gpio13 */
                { 0x00d8dd, 0x01, 0xff }, /* gpio13 */
                { 0x00d8db, 0x00, 0xff }, /* gpio13 */

                /* suspend gpio14 for TS-E */
                { 0x00d8e4, 0x01, 0xff }, /* gpio14 */
                { 0x00d8e5, 0x01, 0xff }, /* gpio14 */
                { 0x00d8e3, 0x00, 0xff }, /* gpio14 */

                /* suspend gpio15 for TS-A */
                { 0x00d8e8, 0x01, 0xff }, /* gpio15 */
                { 0x00d8e9, 0x01, 0xff }, /* gpio15 */
                { 0x00d8e7, 0x00, 0xff }, /* gpio15 */

                { 0x00da58, 0x00, 0x01 }, /* ts_in_src, serial */
                { 0x00da73, 0x01, 0xff }, /* ts0_aggre_mode */
                { 0x00da78, 0x47, 0xff }, /* ts0_sync_byte */
                { 0x00da4c, 0x01, 0xff }, /* ts0_en */
                { 0x00da5a, 0x1f, 0xff }, /* ts_fail_ignore */
        };

        dev_dbg(&intf->dev, "USB speed=%d frame_size=%04x packet_size=%02x\n",
                d->udev->speed, frame_size, packet_size);

        /* init endpoints */
        for (i = 0; i < ARRAY_SIZE(tab); i++) {
                ret = af9035_wr_reg_mask(d, tab[i].reg,
                                tab[i].val, tab[i].mask);

                if (ret < 0)
                        goto err;
        }

        return 0;
err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}


#if IS_ENABLED(CONFIG_RC_CORE)
static int af9035_rc_query(struct dvb_usb_device *d)
{
        struct usb_interface *intf = d->intf;
        int ret;
        enum rc_proto proto;
        u32 key;
        u8 buf[4];
        struct usb_req req = { CMD_IR_GET, 0, 0, NULL, 4, buf };

        ret = af9035_ctrl_msg(d, &req);
        if (ret == 1)
                return 0;
        else if (ret < 0)
                goto err;

        if ((buf[2] + buf[3]) == 0xff) {
                if ((buf[0] + buf[1]) == 0xff) {
                        /* NEC standard 16bit */
                        key = RC_SCANCODE_NEC(buf[0], buf[2]);
                        proto = RC_PROTO_NEC;
                } else {
                        /* NEC extended 24bit */
                        key = RC_SCANCODE_NECX(buf[0] << 8 | buf[1], buf[2]);
                        proto = RC_PROTO_NECX;
                }
        } else {
                /* NEC full code 32bit */
                key = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
                                        buf[2] << 8  | buf[3]);
                proto = RC_PROTO_NEC32;
        }

        dev_dbg(&intf->dev, "%*ph\n", 4, buf);

        rc_keydown(d->rc_dev, proto, key, 0);

        return 0;

err:
        dev_dbg(&intf->dev, "failed=%d\n", ret);

        return ret;
}

static int af9035_get_rc_config(struct dvb_usb_device *d, struct dvb_usb_rc *rc)
{
        struct state *state = d_to_priv(d);
        struct usb_interface *intf = d->intf;

        dev_dbg(&intf->dev, "ir_mode=%02x ir_type=%02x\n",
                state->ir_mode, state->ir_type);

        /* don't activate rc if in HID mode or if not available */
        if (state->ir_mode == 0x05) {
                switch (state->ir_type) {
                case 0: /* NEC */
                default:
                        rc->allowed_protos = RC_PROTO_BIT_NEC |
                                        RC_PROTO_BIT_NECX | RC_PROTO_BIT_NEC32;
                        break;
                case 1: /* RC6 */
                        rc->allowed_protos = RC_PROTO_BIT_RC6_MCE;
                        break;
                }

                rc->query = af9035_rc_query;
                rc->interval = 500;

                /* load empty to enable rc */
                if (!rc->map_name)
                        rc->map_name = RC_MAP_EMPTY;
        }

        return 0;
}
#else
        #define af9035_get_rc_config NULL
#endif

static int af9035_get_stream_config(struct dvb_frontend *fe, u8 *ts_type,
                struct usb_data_stream_properties *stream)
{
        struct dvb_usb_device *d = fe_to_d(fe);
        struct usb_interface *intf = d->intf;

        dev_dbg(&intf->dev, "adap=%d\n", fe_to_adap(fe)->id);

        if (d->udev->speed == USB_SPEED_FULL)
                stream->u.bulk.buffersize = 5 * 188;

        return 0;
}

static int af9035_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
        struct state *state = adap_to_priv(adap);

        return state->ops.pid_filter_ctrl(adap->fe[0], onoff);
}

static int af9035_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid,
                int onoff)
{
        struct state *state = adap_to_priv(adap);

        return state->ops.pid_filter(adap->fe[0], index, pid, onoff);
}

static int af9035_probe(struct usb_interface *intf,
                const struct usb_device_id *id)
{
        struct usb_device *udev = interface_to_usbdev(intf);
        char manufacturer[sizeof("Afatech")];

        memset(manufacturer, 0, sizeof(manufacturer));
        usb_string(udev, udev->descriptor.iManufacturer,
                        manufacturer, sizeof(manufacturer));
        /*
         * There is two devices having same ID but different chipset. One uses
         * AF9015 and the other IT9135 chipset. Only difference seen on lsusb
         * is iManufacturer string.
         *
         * idVendor           0x0ccd TerraTec Electronic GmbH
         * idProduct          0x0099
         * bcdDevice            2.00
         * iManufacturer           1 Afatech
         * iProduct                2 DVB-T 2
         *
         * idVendor           0x0ccd TerraTec Electronic GmbH
         * idProduct          0x0099
         * bcdDevice            2.00
         * iManufacturer           1 ITE Technologies, Inc.
         * iProduct                2 DVB-T TV Stick
         */
        if ((le16_to_cpu(udev->descriptor.idVendor) == USB_VID_TERRATEC) &&
                        (le16_to_cpu(udev->descriptor.idProduct) == 0x0099)) {
                if (!strcmp("Afatech", manufacturer)) {
                        dev_dbg(&udev->dev, "rejecting device\n");
                        return -ENODEV;
                }
        }

        return dvb_usbv2_probe(intf, id);
}

/* interface 0 is used by DVB-T receiver and
   interface 1 is for remote controller (HID) */
static const struct dvb_usb_device_properties af9035_props = {
        .driver_name = KBUILD_MODNAME,
        .owner = THIS_MODULE,
        .adapter_nr = adapter_nr,
        .size_of_priv = sizeof(struct state),

        .generic_bulk_ctrl_endpoint = 0x02,
        .generic_bulk_ctrl_endpoint_response = 0x81,

        .identify_state = af9035_identify_state,
        .download_firmware = af9035_download_firmware,

        .i2c_algo = &af9035_i2c_algo,
        .read_config = af9035_read_config,
        .frontend_attach = af9035_frontend_attach,
        .frontend_detach = af9035_frontend_detach,
        .tuner_attach = af9035_tuner_attach,
        .tuner_detach = af9035_tuner_detach,
        .init = af9035_init,
        .get_rc_config = af9035_get_rc_config,
        .get_stream_config = af9035_get_stream_config,

        .get_adapter_count = af9035_get_adapter_count,
        .adapter = {
                {
                        .caps = DVB_USB_ADAP_HAS_PID_FILTER |
                                DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,

                        .pid_filter_count = 32,
                        .pid_filter_ctrl = af9035_pid_filter_ctrl,
                        .pid_filter = af9035_pid_filter,

                        .stream = DVB_USB_STREAM_BULK(0x84, 6, 87 * 188),
                }, {
                        .caps = DVB_USB_ADAP_HAS_PID_FILTER |
                                DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,

                        .pid_filter_count = 32,
                        .pid_filter_ctrl = af9035_pid_filter_ctrl,
                        .pid_filter = af9035_pid_filter,

                        .stream = DVB_USB_STREAM_BULK(0x85, 6, 87 * 188),
                },
        },
};

static const struct dvb_usb_device_properties it930x_props = {
        .driver_name = KBUILD_MODNAME,
        .owner = THIS_MODULE,
        .adapter_nr = adapter_nr,
        .size_of_priv = sizeof(struct state),

        .generic_bulk_ctrl_endpoint = 0x02,
        .generic_bulk_ctrl_endpoint_response = 0x81,

        .identify_state = af9035_identify_state,
        .download_firmware = af9035_download_firmware,

        .i2c_algo = &af9035_i2c_algo,
        .read_config = af9035_read_config,
        .frontend_attach = it930x_frontend_attach,
        .frontend_detach = af9035_frontend_detach,
        .tuner_attach = it930x_tuner_attach,
        .tuner_detach = it930x_tuner_detach,
        .init = it930x_init,
        /*
         * dvb_usbv2_remote_init() calls rc_config() only for those devices
         * which have non-empty rc_map, so it's safe to enable it for every IT930x
         */
        .get_rc_config = af9035_get_rc_config,
        .get_stream_config = af9035_get_stream_config,

        .get_adapter_count = af9035_get_adapter_count,
        .adapter = {
                {
                        .stream = DVB_USB_STREAM_BULK(0x84, 4, 816 * 188),
                }, {
                        .stream = DVB_USB_STREAM_BULK(0x85, 4, 816 * 188),
                },
        },
};

static const struct usb_device_id af9035_id_table[] = {
        /* AF9035 devices */
        { DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_9035,
                &af9035_props, "Afatech AF9035 reference design", NULL) },
        { DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_1000,
                &af9035_props, "Afatech AF9035 reference design", NULL) },
        { DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_1001,
                &af9035_props, "Afatech AF9035 reference design", NULL) },
        { DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_1002,
                &af9035_props, "Afatech AF9035 reference design", NULL) },
        { DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_1003,
                &af9035_props, "Afatech AF9035 reference design", NULL) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK,
                &af9035_props, "TerraTec Cinergy T Stick", NULL) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835,
                &af9035_props, "AVerMedia AVerTV Volar HD/PRO (A835)", NULL) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_B835,
                &af9035_props, "AVerMedia AVerTV Volar HD/PRO (A835)", NULL) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_1867,
                &af9035_props, "AVerMedia HD Volar (A867)", NULL) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A867,
                &af9035_props, "AVerMedia HD Volar (A867)", NULL) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_TWINSTAR,
                &af9035_props, "AVerMedia Twinstar (A825)", NULL) },
        { DVB_USB_DEVICE(USB_VID_ASUS, USB_PID_ASUS_U3100MINI_PLUS,
                &af9035_props, "Asus U3100Mini Plus", NULL) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00aa,
                &af9035_props, "TerraTec Cinergy T Stick (rev. 2)", NULL) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, 0x0337,
                &af9035_props, "AVerMedia HD Volar (A867)", NULL) },
       { DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_EVOLVEO_XTRATV_STICK,
               &af9035_props, "EVOLVEO XtraTV stick", NULL) },

        /* IT9135 devices */
        { DVB_USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135,
                &af9035_props, "ITE 9135 Generic", RC_MAP_IT913X_V1) },
        { DVB_USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135_9005,
                &af9035_props, "ITE 9135(9005) Generic", RC_MAP_IT913X_V2) },
        { DVB_USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135_9006,
                &af9035_props, "ITE 9135(9006) Generic", RC_MAP_IT913X_V1) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_1835,
                &af9035_props, "Avermedia A835B(1835)", RC_MAP_IT913X_V2) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_2835,
                &af9035_props, "Avermedia A835B(2835)", RC_MAP_IT913X_V2) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_3835,
                &af9035_props, "Avermedia A835B(3835)", RC_MAP_IT913X_V2) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_4835,
                &af9035_props, "Avermedia A835B(4835)", RC_MAP_IT913X_V2) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_TD110,
                &af9035_props, "Avermedia AverTV Volar HD 2 (TD110)", RC_MAP_AVERMEDIA_RM_KS) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_H335,
                &af9035_props, "Avermedia H335", RC_MAP_IT913X_V2) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_UB499_2T_T09,
                &af9035_props, "Kworld UB499-2T T09", RC_MAP_IT913X_V1) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV22_IT9137,
                &af9035_props, "Sveon STV22 Dual DVB-T HDTV",
                                                        RC_MAP_IT913X_V1) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_CTVDIGDUAL_V2,
                &af9035_props, "Digital Dual TV Receiver CTVDIGDUAL_V2",
                                                        RC_MAP_IT913X_V1) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_T1,
                &af9035_props, "TerraTec T1", RC_MAP_IT913X_V1) },
        /* XXX: that same ID [0ccd:0099] is used by af9015 driver too */
        { DVB_USB_DEVICE(USB_VID_TERRATEC, 0x0099,
                &af9035_props, "TerraTec Cinergy T Stick Dual RC (rev. 2)",
                NULL) },
        { DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6a05,
                &af9035_props, "Leadtek WinFast DTV Dongle Dual", NULL) },
        { DVB_USB_DEVICE(USB_VID_HAUPPAUGE, 0xf900,
                &af9035_props, "Hauppauge WinTV-MiniStick 2", NULL) },
        { DVB_USB_DEVICE(USB_VID_PCTV, USB_PID_PCTV_78E,
                &af9035_props, "PCTV AndroiDTV (78e)", RC_MAP_IT913X_V1) },
        { DVB_USB_DEVICE(USB_VID_PCTV, USB_PID_PCTV_79E,
                &af9035_props, "PCTV microStick (79e)", RC_MAP_IT913X_V2) },

        /* IT930x devices */
        { DVB_USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9303,
                &it930x_props, "ITE 9303 Generic", NULL) },
        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_TD310,
                &it930x_props, "AVerMedia TD310 DVB-T2", RC_MAP_AVERMEDIA_RM_KS) },
        { DVB_USB_DEVICE(USB_VID_DEXATEK, 0x0100,
                &it930x_props, "Logilink VG0022A", NULL) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_TC2_STICK,
                &it930x_props, "TerraTec Cinergy TC2 Stick", NULL) },
        { }
};
MODULE_DEVICE_TABLE(usb, af9035_id_table);

static struct usb_driver af9035_usb_driver = {
        .name = KBUILD_MODNAME,
        .id_table = af9035_id_table,
        .probe = af9035_probe,
        .disconnect = dvb_usbv2_disconnect,
        .suspend = dvb_usbv2_suspend,
        .resume = dvb_usbv2_resume,
        .reset_resume = dvb_usbv2_reset_resume,
        .no_dynamic_id = 1,
        .soft_unbind = 1,
};

module_usb_driver(af9035_usb_driver);

MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("Afatech AF9035 driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(AF9035_FIRMWARE_AF9035);
MODULE_FIRMWARE(AF9035_FIRMWARE_IT9135_V1);
MODULE_FIRMWARE(AF9035_FIRMWARE_IT9135_V2);
MODULE_FIRMWARE(AF9035_FIRMWARE_IT9303);