// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Realtek RTL28xxU DVB USB driver
 *
 * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
 * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
 * Copyright (C) 2012 Thomas Mair <thomas.mair86@googlemail.com>
 */

#include "rtl28xxu.h"

static int rtl28xxu_disable_rc;
module_param_named(disable_rc, rtl28xxu_disable_rc, int, 0644);
MODULE_PARM_DESC(disable_rc, "disable RTL2832U remote controller");
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

static int rtl28xxu_ctrl_msg(struct dvb_usb_device *d, struct rtl28xxu_req *req)
{
        struct rtl28xxu_dev *dev = d->priv;
        int ret;
        unsigned int pipe;
        u8 requesttype;

        mutex_lock(&d->usb_mutex);

        if (req->size > sizeof(dev->buf)) {
                dev_err(&d->intf->dev, "too large message %u\n", req->size);
                ret = -EINVAL;
                goto err_mutex_unlock;
        }

        if (req->index & CMD_WR_FLAG) {
                /* write */
                memcpy(dev->buf, req->data, req->size);
                requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
                pipe = usb_sndctrlpipe(d->udev, 0);
        } else {
                /* read */
                requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);

                /*
                 * Zero-length transfers must use usb_sndctrlpipe() and
                 * rtl28xxu_identify_state() uses a zero-length i2c read
                 * command to determine the chip type.
                 */
                if (req->size)
                        pipe = usb_rcvctrlpipe(d->udev, 0);
                else
                        pipe = usb_sndctrlpipe(d->udev, 0);
        }

        ret = usb_control_msg(d->udev, pipe, 0, requesttype, req->value,
                        req->index, dev->buf, req->size, 1000);
        dvb_usb_dbg_usb_control_msg(d->udev, 0, requesttype, req->value,
                        req->index, dev->buf, req->size);
        if (ret < 0)
                goto err_mutex_unlock;

        /* read request, copy returned data to return buf */
        if (requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
                memcpy(req->data, dev->buf, req->size);

        mutex_unlock(&d->usb_mutex);

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

static int rtl28xxu_wr_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
{
        struct rtl28xxu_req req;

        if (reg < 0x3000)
                req.index = CMD_USB_WR;
        else if (reg < 0x4000)
                req.index = CMD_SYS_WR;
        else
                req.index = CMD_IR_WR;

        req.value = reg;
        req.size = len;
        req.data = val;

        return rtl28xxu_ctrl_msg(d, &req);
}

static int rtl28xxu_rd_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
{
        struct rtl28xxu_req req;

        if (reg < 0x3000)
                req.index = CMD_USB_RD;
        else if (reg < 0x4000)
                req.index = CMD_SYS_RD;
        else
                req.index = CMD_IR_RD;

        req.value = reg;
        req.size = len;
        req.data = val;

        return rtl28xxu_ctrl_msg(d, &req);
}

static int rtl28xxu_wr_reg(struct dvb_usb_device *d, u16 reg, u8 val)
{
        return rtl28xxu_wr_regs(d, reg, &val, 1);
}

static int rtl28xxu_rd_reg(struct dvb_usb_device *d, u16 reg, u8 *val)
{
        return rtl28xxu_rd_regs(d, reg, val, 1);
}

static int rtl28xxu_wr_reg_mask(struct dvb_usb_device *d, u16 reg, u8 val,
                u8 mask)
{
        int ret;
        u8 tmp;

        /* no need for read if whole reg is written */
        if (mask != 0xff) {
                ret = rtl28xxu_rd_reg(d, reg, &tmp);
                if (ret)
                        return ret;

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

        return rtl28xxu_wr_reg(d, reg, val);
}

/* I2C */
static int rtl28xxu_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
        int num)
{
        int ret;
        struct dvb_usb_device *d = i2c_get_adapdata(adap);
        struct rtl28xxu_dev *dev = d->priv;
        struct rtl28xxu_req req;

        /*
         * It is not known which are real I2C bus xfer limits, but testing
         * with RTL2831U + MT2060 gives max RD 24 and max WR 22 bytes.
         * TODO: find out RTL2832U lens
         */

        /*
         * I2C adapter logic looks rather complicated due to fact it handles
         * three different access methods. Those methods are;
         * 1) integrated demod access
         * 2) old I2C access
         * 3) new I2C access
         *
         * Used method is selected in order 1, 2, 3. Method 3 can handle all
         * requests but there is two reasons why not use it always;
         * 1) It is most expensive, usually two USB messages are needed
         * 2) At least RTL2831U does not support it
         *
         * Method 3 is needed in case of I2C write+read (typical register read)
         * where write is more than one byte.
         */

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

        if (num == 2 && !(msg[0].flags & I2C_M_RD) &&
                (msg[1].flags & I2C_M_RD)) {
                if (msg[0].len > 24 || msg[1].len > 24) {
                        /* TODO: check msg[0].len max */
                        ret = -EOPNOTSUPP;
                        goto err_mutex_unlock;
                } else if (msg[0].addr == 0x10) {
                        if (msg[0].len < 1 || msg[1].len < 1) {
                                ret = -EOPNOTSUPP;
                                goto err_mutex_unlock;
                        }
                        /* method 1 - integrated demod */
                        if (msg[0].buf[0] == 0x00) {
                                /* return demod page from driver cache */
                                msg[1].buf[0] = dev->page;
                                ret = 0;
                        } else {
                                req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
                                req.index = CMD_DEMOD_RD | dev->page;
                                req.size = msg[1].len;
                                req.data = &msg[1].buf[0];
                                ret = rtl28xxu_ctrl_msg(d, &req);
                        }
                } else if (msg[0].len < 2) {
                        if (msg[0].len < 1) {
                                ret = -EOPNOTSUPP;
                                goto err_mutex_unlock;
                        }
                        /* method 2 - old I2C */
                        req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
                        req.index = CMD_I2C_RD;
                        req.size = msg[1].len;
                        req.data = &msg[1].buf[0];
                        ret = rtl28xxu_ctrl_msg(d, &req);
                } else {
                        /* method 3 - new I2C */
                        req.value = (msg[0].addr << 1);
                        req.index = CMD_I2C_DA_WR;
                        req.size = msg[0].len;
                        req.data = msg[0].buf;
                        ret = rtl28xxu_ctrl_msg(d, &req);
                        if (ret)
                                goto err_mutex_unlock;

                        req.value = (msg[0].addr << 1);
                        req.index = CMD_I2C_DA_RD;
                        req.size = msg[1].len;
                        req.data = msg[1].buf;
                        ret = rtl28xxu_ctrl_msg(d, &req);
                }
        } else if (num == 1 && !(msg[0].flags & I2C_M_RD)) {
                if (msg[0].len > 22) {
                        /* TODO: check msg[0].len max */
                        ret = -EOPNOTSUPP;
                        goto err_mutex_unlock;
                } else if (msg[0].addr == 0x10) {
                        if (msg[0].len < 1) {
                                ret = -EOPNOTSUPP;
                                goto err_mutex_unlock;
                        }
                        /* method 1 - integrated demod */
                        if (msg[0].buf[0] == 0x00) {
                                if (msg[0].len < 2) {
                                        ret = -EOPNOTSUPP;
                                        goto err_mutex_unlock;
                                }
                                /* save demod page for later demod access */
                                dev->page = msg[0].buf[1];
                                ret = 0;
                        } else {
                                req.value = (msg[0].buf[0] << 8) |
                                        (msg[0].addr << 1);
                                req.index = CMD_DEMOD_WR | dev->page;
                                req.size = msg[0].len-1;
                                req.data = &msg[0].buf[1];
                                ret = rtl28xxu_ctrl_msg(d, &req);
                        }
                } else if ((msg[0].len < 23) && (!dev->new_i2c_write)) {
                        if (msg[0].len < 1) {
                                ret = -EOPNOTSUPP;
                                goto err_mutex_unlock;
                        }
                        /* method 2 - old I2C */
                        req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
                        req.index = CMD_I2C_WR;
                        req.size = msg[0].len-1;
                        req.data = &msg[0].buf[1];
                        ret = rtl28xxu_ctrl_msg(d, &req);
                } else {
                        /* method 3 - new I2C */
                        req.value = (msg[0].addr << 1);
                        req.index = CMD_I2C_DA_WR;
                        req.size = msg[0].len;
                        req.data = msg[0].buf;
                        ret = rtl28xxu_ctrl_msg(d, &req);
                }
        } else if (num == 1 && (msg[0].flags & I2C_M_RD)) {
                req.value = (msg[0].addr << 1);
                req.index = CMD_I2C_DA_RD;
                req.size = msg[0].len;
                req.data = msg[0].buf;
                ret = rtl28xxu_ctrl_msg(d, &req);
        } else {
                ret = -EOPNOTSUPP;
        }

        /* Retry failed I2C messages */
        if (ret == -EPIPE)
                ret = -EAGAIN;

err_mutex_unlock:
        mutex_unlock(&d->i2c_mutex);

        return ret ? ret : num;
}

static u32 rtl28xxu_i2c_func(struct i2c_adapter *adapter)
{
        return I2C_FUNC_I2C;
}

static const struct i2c_algorithm rtl28xxu_i2c_algo = {
        .master_xfer   = rtl28xxu_i2c_xfer,
        .functionality = rtl28xxu_i2c_func,
};

static int rtl2831u_read_config(struct dvb_usb_device *d)
{
        struct rtl28xxu_dev *dev = d_to_priv(d);
        int ret;
        u8 buf[1];
        /* open RTL2831U/RTL2830 I2C gate */
        struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x08"};
        /* tuner probes */
        struct rtl28xxu_req req_mt2060 = {0x00c0, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_qt1010 = {0x0fc4, CMD_I2C_RD, 1, buf};

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

        /*
         * RTL2831U GPIOs
         * =========================================================
         * GPIO0 | tuner#0 | 0 off | 1 on  | MXL5005S (?)
         * GPIO2 | LED     | 0 off | 1 on  |
         * GPIO4 | tuner#1 | 0 on  | 1 off | MT2060
         */

        /* GPIO direction */
        ret = rtl28xxu_wr_reg(d, SYS_GPIO_DIR, 0x0a);
        if (ret)
                goto err;

        /* enable as output GPIO0, GPIO2, GPIO4 */
        ret = rtl28xxu_wr_reg(d, SYS_GPIO_OUT_EN, 0x15);
        if (ret)
                goto err;

        /*
         * Probe used tuner. We need to know used tuner before demod attach
         * since there is some demod params needed to set according to tuner.
         */

        /* demod needs some time to wake up */
        msleep(20);

        dev->tuner_name = "NONE";

        /* open demod I2C gate */
        ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
        if (ret)
                goto err;

        /* check QT1010 ID(?) register; reg=0f val=2c */
        ret = rtl28xxu_ctrl_msg(d, &req_qt1010);
        if (ret == 0 && buf[0] == 0x2c) {
                dev->tuner = TUNER_RTL2830_QT1010;
                dev->tuner_name = "QT1010";
                goto found;
        }

        /* open demod I2C gate */
        ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
        if (ret)
                goto err;

        /* check MT2060 ID register; reg=00 val=63 */
        ret = rtl28xxu_ctrl_msg(d, &req_mt2060);
        if (ret == 0 && buf[0] == 0x63) {
                dev->tuner = TUNER_RTL2830_MT2060;
                dev->tuner_name = "MT2060";
                goto found;
        }

        /* assume MXL5005S */
        dev->tuner = TUNER_RTL2830_MXL5005S;
        dev->tuner_name = "MXL5005S";
        goto found;

found:
        dev_dbg(&d->intf->dev, "tuner=%s\n", dev->tuner_name);

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

static int rtl2832u_read_config(struct dvb_usb_device *d)
{
        struct rtl28xxu_dev *dev = d_to_priv(d);
        int ret;
        u8 buf[2];
        /* open RTL2832U/RTL2832 I2C gate */
        struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x18"};
        /* close RTL2832U/RTL2832 I2C gate */
        struct rtl28xxu_req req_gate_close = {0x0120, 0x0011, 0x0001, "\x10"};
        /* tuner probes */
        struct rtl28xxu_req req_fc0012 = {0x00c6, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_fc0013 = {0x00c6, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_mt2266 = {0x00c0, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_fc2580 = {0x01ac, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_mt2063 = {0x00c0, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_max3543 = {0x00c0, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_tua9001 = {0x7ec0, CMD_I2C_RD, 2, buf};
        struct rtl28xxu_req req_mxl5007t = {0xd9c0, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_e4000 = {0x02c8, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_tda18272 = {0x00c0, CMD_I2C_RD, 2, buf};
        struct rtl28xxu_req req_r820t = {0x0034, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_r828d = {0x0074, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_mn88472 = {0xff38, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_mn88473 = {0xff38, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_cxd2837er = {0xfdd8, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_si2157 = {0x00c0, CMD_I2C_RD, 1, buf};
        struct rtl28xxu_req req_si2168 = {0x00c8, CMD_I2C_RD, 1, buf};

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

        /* enable GPIO3 and GPIO6 as output */
        ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x40);
        if (ret)
                goto err;

        ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x48, 0x48);
        if (ret)
                goto err;

        /*
         * Probe used tuner. We need to know used tuner before demod attach
         * since there is some demod params needed to set according to tuner.
         */

        /* open demod I2C gate */
        ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
        if (ret)
                goto err;

        dev->tuner_name = "NONE";

        /* check FC0012 ID register; reg=00 val=a1 */
        ret = rtl28xxu_ctrl_msg(d, &req_fc0012);
        if (ret == 0 && buf[0] == 0xa1) {
                dev->tuner = TUNER_RTL2832_FC0012;
                dev->tuner_name = "FC0012";
                goto tuner_found;
        }

        /* check FC0013 ID register; reg=00 val=a3 */
        ret = rtl28xxu_ctrl_msg(d, &req_fc0013);
        if (ret == 0 && buf[0] == 0xa3) {
                dev->tuner = TUNER_RTL2832_FC0013;
                dev->tuner_name = "FC0013";
                goto tuner_found;
        }

        /* check MT2266 ID register; reg=00 val=85 */
        ret = rtl28xxu_ctrl_msg(d, &req_mt2266);
        if (ret == 0 && buf[0] == 0x85) {
                dev->tuner = TUNER_RTL2832_MT2266;
                dev->tuner_name = "MT2266";
                goto tuner_found;
        }

        /* check FC2580 ID register; reg=01 val=56 */
        ret = rtl28xxu_ctrl_msg(d, &req_fc2580);
        if (ret == 0 && buf[0] == 0x56) {
                dev->tuner = TUNER_RTL2832_FC2580;
                dev->tuner_name = "FC2580";
                goto tuner_found;
        }

        /* check MT2063 ID register; reg=00 val=9e || 9c */
        ret = rtl28xxu_ctrl_msg(d, &req_mt2063);
        if (ret == 0 && (buf[0] == 0x9e || buf[0] == 0x9c)) {
                dev->tuner = TUNER_RTL2832_MT2063;
                dev->tuner_name = "MT2063";
                goto tuner_found;
        }

        /* check MAX3543 ID register; reg=00 val=38 */
        ret = rtl28xxu_ctrl_msg(d, &req_max3543);
        if (ret == 0 && buf[0] == 0x38) {
                dev->tuner = TUNER_RTL2832_MAX3543;
                dev->tuner_name = "MAX3543";
                goto tuner_found;
        }

        /* check TUA9001 ID register; reg=7e val=2328 */
        ret = rtl28xxu_ctrl_msg(d, &req_tua9001);
        if (ret == 0 && buf[0] == 0x23 && buf[1] == 0x28) {
                dev->tuner = TUNER_RTL2832_TUA9001;
                dev->tuner_name = "TUA9001";
                goto tuner_found;
        }

        /* check MXL5007R ID register; reg=d9 val=14 */
        ret = rtl28xxu_ctrl_msg(d, &req_mxl5007t);
        if (ret == 0 && buf[0] == 0x14) {
                dev->tuner = TUNER_RTL2832_MXL5007T;
                dev->tuner_name = "MXL5007T";
                goto tuner_found;
        }

        /* check E4000 ID register; reg=02 val=40 */
        ret = rtl28xxu_ctrl_msg(d, &req_e4000);
        if (ret == 0 && buf[0] == 0x40) {
                dev->tuner = TUNER_RTL2832_E4000;
                dev->tuner_name = "E4000";
                goto tuner_found;
        }

        /* check TDA18272 ID register; reg=00 val=c760  */
        ret = rtl28xxu_ctrl_msg(d, &req_tda18272);
        if (ret == 0 && (buf[0] == 0xc7 || buf[1] == 0x60)) {
                dev->tuner = TUNER_RTL2832_TDA18272;
                dev->tuner_name = "TDA18272";
                goto tuner_found;
        }

        /* check R820T ID register; reg=00 val=69 */
        ret = rtl28xxu_ctrl_msg(d, &req_r820t);
        if (ret == 0 && buf[0] == 0x69) {
                dev->tuner = TUNER_RTL2832_R820T;
                dev->tuner_name = "R820T";
                goto tuner_found;
        }

        /* check R828D ID register; reg=00 val=69 */
        ret = rtl28xxu_ctrl_msg(d, &req_r828d);
        if (ret == 0 && buf[0] == 0x69) {
                dev->tuner = TUNER_RTL2832_R828D;
                dev->tuner_name = "R828D";
                goto tuner_found;
        }

        /* GPIO0 and GPIO5 to reset Si2157/Si2168 tuner and demod */
        ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x00, 0x21);
        if (ret)
                goto err;

        ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x00, 0x21);
        if (ret)
                goto err;

        msleep(50);

        ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x21, 0x21);
        if (ret)
                goto err;

        ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x21, 0x21);
        if (ret)
                goto err;

        msleep(50);

        /* check Si2157 ID register; reg=c0 val=80 */
        ret = rtl28xxu_ctrl_msg(d, &req_si2157);
        if (ret == 0 && ((buf[0] & 0x80) == 0x80)) {
                dev->tuner = TUNER_RTL2832_SI2157;
                dev->tuner_name = "SI2157";
                goto tuner_found;
        }

tuner_found:
        dev_dbg(&d->intf->dev, "tuner=%s\n", dev->tuner_name);

        /* probe slave demod */
        if (dev->tuner == TUNER_RTL2832_R828D) {
                /* power off slave demod on GPIO0 to reset CXD2837ER */
                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x00, 0x01);
                if (ret)
                        goto err;

                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x00, 0x01);
                if (ret)
                        goto err;

                msleep(50);

                /* power on slave demod on GPIO0 */
                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x01, 0x01);
                if (ret)
                        goto err;

                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x01);
                if (ret)
                        goto err;

                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x01, 0x01);
                if (ret)
                        goto err;

                /* slave demod needs some time to wake up */
                msleep(20);

                /* check slave answers */
                ret = rtl28xxu_ctrl_msg(d, &req_mn88472);
                if (ret == 0 && buf[0] == 0x02) {
                        dev_dbg(&d->intf->dev, "MN88472 found\n");
                        dev->slave_demod = SLAVE_DEMOD_MN88472;
                        goto demod_found;
                }

                ret = rtl28xxu_ctrl_msg(d, &req_mn88473);
                if (ret == 0 && buf[0] == 0x03) {
                        dev_dbg(&d->intf->dev, "MN88473 found\n");
                        dev->slave_demod = SLAVE_DEMOD_MN88473;
                        goto demod_found;
                }

                ret = rtl28xxu_ctrl_msg(d, &req_cxd2837er);
                if (ret == 0 && buf[0] == 0xb1) {
                        dev_dbg(&d->intf->dev, "CXD2837ER found\n");
                        dev->slave_demod = SLAVE_DEMOD_CXD2837ER;
                        goto demod_found;
                }
        }
        if (dev->tuner == TUNER_RTL2832_SI2157) {
                /* check Si2168 ID register; reg=c8 val=80 */
                ret = rtl28xxu_ctrl_msg(d, &req_si2168);
                if (ret == 0 && ((buf[0] & 0x80) == 0x80)) {
                        dev_dbg(&d->intf->dev, "Si2168 found\n");
                        dev->slave_demod = SLAVE_DEMOD_SI2168;
                        goto demod_found;
                }
        }

demod_found:
        /* close demod I2C gate */
        ret = rtl28xxu_ctrl_msg(d, &req_gate_close);
        if (ret < 0)
                goto err;

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

static int rtl28xxu_read_config(struct dvb_usb_device *d)
{
        struct rtl28xxu_dev *dev = d_to_priv(d);

        if (dev->chip_id == CHIP_ID_RTL2831U)
                return rtl2831u_read_config(d);
        else
                return rtl2832u_read_config(d);
}

static int rtl28xxu_identify_state(struct dvb_usb_device *d, const char **name)
{
        struct rtl28xxu_dev *dev = d_to_priv(d);
        int ret;
        struct rtl28xxu_req req_demod_i2c = {0x0020, CMD_I2C_DA_RD, 0, NULL};

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

        /*
         * Detect chip type using I2C command that is not supported
         * by old RTL2831U.
         */
        ret = rtl28xxu_ctrl_msg(d, &req_demod_i2c);
        if (ret == -EPIPE) {
                dev->chip_id = CHIP_ID_RTL2831U;
        } else if (ret == 0) {
                dev->chip_id = CHIP_ID_RTL2832U;
        } else {
                dev_err(&d->intf->dev, "chip type detection failed %d\n", ret);
                goto err;
        }
        dev_dbg(&d->intf->dev, "chip_id=%u\n", dev->chip_id);

        /* Retry failed I2C messages */
        d->i2c_adap.retries = 3;
        d->i2c_adap.timeout = msecs_to_jiffies(10);

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

static const struct rtl2830_platform_data rtl2830_mt2060_platform_data = {
        .clk = 28800000,
        .spec_inv = 1,
        .vtop = 0x20,
        .krf = 0x04,
        .agc_targ_val = 0x2d,

};

static const struct rtl2830_platform_data rtl2830_qt1010_platform_data = {
        .clk = 28800000,
        .spec_inv = 1,
        .vtop = 0x20,
        .krf = 0x04,
        .agc_targ_val = 0x2d,
};

static const struct rtl2830_platform_data rtl2830_mxl5005s_platform_data = {
        .clk = 28800000,
        .spec_inv = 0,
        .vtop = 0x3f,
        .krf = 0x04,
        .agc_targ_val = 0x3e,
};

static int rtl2831u_frontend_attach(struct dvb_usb_adapter *adap)
{
        struct dvb_usb_device *d = adap_to_d(adap);
        struct rtl28xxu_dev *dev = d_to_priv(d);
        struct rtl2830_platform_data *pdata = &dev->rtl2830_platform_data;
        struct i2c_board_info board_info;
        struct i2c_client *client;
        int ret;

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

        switch (dev->tuner) {
        case TUNER_RTL2830_QT1010:
                *pdata = rtl2830_qt1010_platform_data;
                break;
        case TUNER_RTL2830_MT2060:
                *pdata = rtl2830_mt2060_platform_data;
                break;
        case TUNER_RTL2830_MXL5005S:
                *pdata = rtl2830_mxl5005s_platform_data;
                break;
        default:
                dev_err(&d->intf->dev, "unknown tuner %s\n", dev->tuner_name);
                ret = -ENODEV;
                goto err;
        }

        /* attach demodulator */
        memset(&board_info, 0, sizeof(board_info));
        strscpy(board_info.type, "rtl2830", I2C_NAME_SIZE);
        board_info.addr = 0x10;
        board_info.platform_data = pdata;
        request_module("%s", board_info.type);
        client = i2c_new_client_device(&d->i2c_adap, &board_info);
        if (!i2c_client_has_driver(client)) {
                ret = -ENODEV;
                goto err;
        }

        if (!try_module_get(client->dev.driver->owner)) {
                i2c_unregister_device(client);
                ret = -ENODEV;
                goto err;
        }

        adap->fe[0] = pdata->get_dvb_frontend(client);
        dev->demod_i2c_adapter = pdata->get_i2c_adapter(client);

        dev->i2c_client_demod = client;

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

static const struct rtl2832_platform_data rtl2832_fc2580_platform_data = {
        .clk = 28800000,
        .tuner = TUNER_RTL2832_FC2580,
};

static const struct rtl2832_platform_data rtl2832_fc0012_platform_data = {
        .clk = 28800000,
        .tuner = TUNER_RTL2832_FC0012
};

static const struct rtl2832_platform_data rtl2832_fc0013_platform_data = {
        .clk = 28800000,
        .tuner = TUNER_RTL2832_FC0013
};

static const struct rtl2832_platform_data rtl2832_tua9001_platform_data = {
        .clk = 28800000,
        .tuner = TUNER_RTL2832_TUA9001,
};

static const struct rtl2832_platform_data rtl2832_e4000_platform_data = {
        .clk = 28800000,
        .tuner = TUNER_RTL2832_E4000,
};

static const struct rtl2832_platform_data rtl2832_r820t_platform_data = {
        .clk = 28800000,
        .tuner = TUNER_RTL2832_R820T,
};

static const struct rtl2832_platform_data rtl2832_si2157_platform_data = {
        .clk = 28800000,
        .tuner = TUNER_RTL2832_SI2157,
};

static int rtl2832u_fc0012_tuner_callback(struct dvb_usb_device *d,
                int cmd, int arg)
{
        int ret;
        u8 val;

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

        switch (cmd) {
        case FC_FE_CALLBACK_VHF_ENABLE:
                /* set output values */
                ret = rtl28xxu_rd_reg(d, SYS_GPIO_OUT_VAL, &val);
                if (ret)
                        goto err;

                if (arg)
                        val &= 0xbf; /* set GPIO6 low */
                else
                        val |= 0x40; /* set GPIO6 high */


                ret = rtl28xxu_wr_reg(d, SYS_GPIO_OUT_VAL, val);
                if (ret)
                        goto err;
                break;
        default:
                ret = -EINVAL;
                goto err;
        }
        return 0;
err:
        dev_dbg(&d->intf->dev, "failed=%d\n", ret);
        return ret;
}

static int rtl2832u_tua9001_tuner_callback(struct dvb_usb_device *d,
                int cmd, int arg)
{
        int ret;
        u8 val;

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

        /*
         * CEN     always enabled by hardware wiring
         * RESETN  GPIO4
         * RXEN    GPIO1
         */

        switch (cmd) {
        case TUA9001_CMD_RESETN:
                if (arg)
                        val = (1 << 4);
                else
                        val = (0 << 4);

                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x10);
                if (ret)
                        goto err;
                break;
        case TUA9001_CMD_RXEN:
                if (arg)
                        val = (1 << 1);
                else
                        val = (0 << 1);

                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x02);
                if (ret)
                        goto err;
                break;
        }

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

static int rtl2832u_frontend_callback(void *adapter_priv, int component,
                int cmd, int arg)
{
        struct i2c_adapter *adapter = adapter_priv;
        struct device *parent = adapter->dev.parent;
        struct i2c_adapter *parent_adapter;
        struct dvb_usb_device *d;
        struct rtl28xxu_dev *dev;

        /*
         * All tuners are connected to demod muxed I2C adapter. We have to
         * resolve its parent adapter in order to get handle for this driver
         * private data. That is a bit hackish solution, GPIO or direct driver
         * callback would be better...
         */
        if (parent != NULL && parent->type == &i2c_adapter_type)
                parent_adapter = to_i2c_adapter(parent);
        else
                return -EINVAL;

        d = i2c_get_adapdata(parent_adapter);
        dev = d->priv;

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

        switch (component) {
        case DVB_FRONTEND_COMPONENT_TUNER:
                switch (dev->tuner) {
                case TUNER_RTL2832_FC0012:
                        return rtl2832u_fc0012_tuner_callback(d, cmd, arg);
                case TUNER_RTL2832_TUA9001:
                        return rtl2832u_tua9001_tuner_callback(d, cmd, arg);
                }
        }

        return 0;
}

static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
{
        struct dvb_usb_device *d = adap_to_d(adap);
        struct rtl28xxu_dev *dev = d_to_priv(d);
        struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
        struct i2c_board_info board_info;
        struct i2c_client *client;
        int ret;

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

        switch (dev->tuner) {
        case TUNER_RTL2832_FC0012:
                *pdata = rtl2832_fc0012_platform_data;
                break;
        case TUNER_RTL2832_FC0013:
                *pdata = rtl2832_fc0013_platform_data;
                break;
        case TUNER_RTL2832_FC2580:
                *pdata = rtl2832_fc2580_platform_data;
                break;
        case TUNER_RTL2832_TUA9001:
                *pdata = rtl2832_tua9001_platform_data;
                break;
        case TUNER_RTL2832_E4000:
                *pdata = rtl2832_e4000_platform_data;
                break;
        case TUNER_RTL2832_R820T:
        case TUNER_RTL2832_R828D:
                *pdata = rtl2832_r820t_platform_data;
                break;
        case TUNER_RTL2832_SI2157:
                *pdata = rtl2832_si2157_platform_data;
                break;
        default:
                dev_err(&d->intf->dev, "unknown tuner %s\n", dev->tuner_name);
                ret = -ENODEV;
                goto err;
        }

        /* attach demodulator */
        memset(&board_info, 0, sizeof(board_info));
        strscpy(board_info.type, "rtl2832", I2C_NAME_SIZE);
        board_info.addr = 0x10;
        board_info.platform_data = pdata;
        request_module("%s", board_info.type);
        client = i2c_new_client_device(&d->i2c_adap, &board_info);
        if (!i2c_client_has_driver(client)) {
                ret = -ENODEV;
                goto err;
        }

        if (!try_module_get(client->dev.driver->owner)) {
                i2c_unregister_device(client);
                ret = -ENODEV;
                goto err;
        }

        adap->fe[0] = pdata->get_dvb_frontend(client);
        dev->demod_i2c_adapter = pdata->get_i2c_adapter(client);

        dev->i2c_client_demod = client;

        /* set fe callback */
        adap->fe[0]->callback = rtl2832u_frontend_callback;

        if (dev->slave_demod) {
                struct i2c_board_info info = {};

                /* attach slave demodulator */
                if (dev->slave_demod == SLAVE_DEMOD_MN88472) {
                        struct mn88472_config mn88472_config = {};

                        mn88472_config.fe = &adap->fe[1];
                        mn88472_config.i2c_wr_max = 22;
                        strscpy(info.type, "mn88472", I2C_NAME_SIZE);
                        mn88472_config.xtal = 20500000;
                        mn88472_config.ts_mode = SERIAL_TS_MODE;
                        mn88472_config.ts_clock = VARIABLE_TS_CLOCK;
                        info.addr = 0x18;
                        info.platform_data = &mn88472_config;
                        request_module(info.type);
                        client = i2c_new_client_device(&d->i2c_adap, &info);
                        if (!i2c_client_has_driver(client))
                                goto err_slave_demod_failed;

                        if (!try_module_get(client->dev.driver->owner)) {
                                i2c_unregister_device(client);
                                goto err_slave_demod_failed;
                        }

                        dev->i2c_client_slave_demod = client;
                } else if (dev->slave_demod == SLAVE_DEMOD_MN88473) {
                        struct mn88473_config mn88473_config = {};

                        mn88473_config.fe = &adap->fe[1];
                        mn88473_config.i2c_wr_max = 22;
                        strscpy(info.type, "mn88473", I2C_NAME_SIZE);
                        info.addr = 0x18;
                        info.platform_data = &mn88473_config;
                        request_module(info.type);
                        client = i2c_new_client_device(&d->i2c_adap, &info);
                        if (!i2c_client_has_driver(client))
                                goto err_slave_demod_failed;

                        if (!try_module_get(client->dev.driver->owner)) {
                                i2c_unregister_device(client);
                                goto err_slave_demod_failed;
                        }

                        dev->i2c_client_slave_demod = client;
                } else if (dev->slave_demod == SLAVE_DEMOD_CXD2837ER) {
                        struct cxd2841er_config cxd2837er_config = {};

                        cxd2837er_config.i2c_addr = 0xd8;
                        cxd2837er_config.xtal = SONY_XTAL_20500;
                        cxd2837er_config.flags = (CXD2841ER_AUTO_IFHZ |
                                CXD2841ER_NO_AGCNEG | CXD2841ER_TSBITS |
                                CXD2841ER_EARLY_TUNE | CXD2841ER_TS_SERIAL);
                        adap->fe[1] = dvb_attach(cxd2841er_attach_t_c,
                                                 &cxd2837er_config,
                                                 &d->i2c_adap);
                        if (!adap->fe[1])
                                goto err_slave_demod_failed;
                        adap->fe[1]->id = 1;
                        dev->i2c_client_slave_demod = NULL;
                } else {
                        struct si2168_config si2168_config = {};
                        struct i2c_adapter *adapter;

                        si2168_config.i2c_adapter = &adapter;
                        si2168_config.fe = &adap->fe[1];
                        si2168_config.ts_mode = SI2168_TS_SERIAL;
                        si2168_config.ts_clock_inv = false;
                        si2168_config.ts_clock_gapped = true;
                        strscpy(info.type, "si2168", I2C_NAME_SIZE);
                        info.addr = 0x64;
                        info.platform_data = &si2168_config;
                        request_module(info.type);
                        client = i2c_new_client_device(&d->i2c_adap, &info);
                        if (!i2c_client_has_driver(client))
                                goto err_slave_demod_failed;

                        if (!try_module_get(client->dev.driver->owner)) {
                                i2c_unregister_device(client);
                                goto err_slave_demod_failed;
                        }

                        dev->i2c_client_slave_demod = client;

                        /* for Si2168 devices use only new I2C write method */
                        dev->new_i2c_write = true;
                }
        }
        return 0;

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

err_slave_demod_failed:
        /*
         * We continue on reduced mode, without DVB-T2/C, using master
         * demod, when slave demod fails.
         */
        dev->slave_demod = SLAVE_DEMOD_NONE;
        return 0;
}

static int rtl28xxu_frontend_attach(struct dvb_usb_adapter *adap)
{
        struct rtl28xxu_dev *dev = adap_to_priv(adap);

        if (dev->chip_id == CHIP_ID_RTL2831U)
                return rtl2831u_frontend_attach(adap);
        else
                return rtl2832u_frontend_attach(adap);
}

static int rtl28xxu_frontend_detach(struct dvb_usb_adapter *adap)
{
        struct dvb_usb_device *d = adap_to_d(adap);
        struct rtl28xxu_dev *dev = d_to_priv(d);
        struct i2c_client *client;

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

        /* remove I2C slave demod */
        client = dev->i2c_client_slave_demod;
        if (client) {
                module_put(client->dev.driver->owner);
                i2c_unregister_device(client);
        }

        /* remove I2C demod */
        client = dev->i2c_client_demod;
        if (client) {
                module_put(client->dev.driver->owner);
                i2c_unregister_device(client);
        }

        return 0;
}

static struct qt1010_config rtl28xxu_qt1010_config = {
        .i2c_address = 0x62, /* 0xc4 */
};

static struct mt2060_config rtl28xxu_mt2060_config = {
        .i2c_address = 0x60, /* 0xc0 */
        .clock_out = 0,
};

static struct mxl5005s_config rtl28xxu_mxl5005s_config = {
        .i2c_address     = 0x63, /* 0xc6 */
        .if_freq         = IF_FREQ_4570000HZ,
        .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
        .agc_mode        = MXL_SINGLE_AGC,
        .tracking_filter = MXL_TF_C_H,
        .rssi_enable     = MXL_RSSI_ENABLE,
        .cap_select      = MXL_CAP_SEL_ENABLE,
        .div_out         = MXL_DIV_OUT_4,
        .clock_out       = MXL_CLOCK_OUT_DISABLE,
        .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
        .top             = MXL5005S_TOP_25P2,
        .mod_mode        = MXL_DIGITAL_MODE,
        .if_mode         = MXL_ZERO_IF,
        .AgcMasterByte   = 0x00,
};

static int rtl2831u_tuner_attach(struct dvb_usb_adapter *adap)
{
        int ret;
        struct dvb_usb_device *d = adap_to_d(adap);
        struct rtl28xxu_dev *dev = d_to_priv(d);
        struct dvb_frontend *fe;

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

        switch (dev->tuner) {
        case TUNER_RTL2830_QT1010:
                fe = dvb_attach(qt1010_attach, adap->fe[0],
                                dev->demod_i2c_adapter,
                                &rtl28xxu_qt1010_config);
                break;
        case TUNER_RTL2830_MT2060:
                fe = dvb_attach(mt2060_attach, adap->fe[0],
                                dev->demod_i2c_adapter,
                                &rtl28xxu_mt2060_config, 1220);
                break;
        case TUNER_RTL2830_MXL5005S:
                fe = dvb_attach(mxl5005s_attach, adap->fe[0],
                                dev->demod_i2c_adapter,
                                &rtl28xxu_mxl5005s_config);
                break;
        default:
                fe = NULL;
                dev_err(&d->intf->dev, "unknown tuner %d\n", dev->tuner);
        }

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

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

static const struct fc0012_config rtl2832u_fc0012_config = {
        .i2c_address = 0x63, /* 0xc6 >> 1 */
        .xtal_freq = FC_XTAL_28_8_MHZ,
};

static const struct r820t_config rtl2832u_r820t_config = {
        .i2c_addr = 0x1a,
        .xtal = 28800000,
        .max_i2c_msg_len = 2,
        .rafael_chip = CHIP_R820T,
};

static const struct r820t_config rtl2832u_r828d_config = {
        .i2c_addr = 0x3a,
        .xtal = 16000000,
        .max_i2c_msg_len = 2,
        .rafael_chip = CHIP_R828D,
};

static int rtl2832u_tuner_attach(struct dvb_usb_adapter *adap)
{
        int ret;
        struct dvb_usb_device *d = adap_to_d(adap);
        struct rtl28xxu_dev *dev = d_to_priv(d);
        struct dvb_frontend *fe = NULL;
        struct i2c_board_info info;
        struct i2c_client *client;
        struct v4l2_subdev *subdev = NULL;
        struct platform_device *pdev;
        struct rtl2832_sdr_platform_data pdata;

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

        memset(&info, 0, sizeof(struct i2c_board_info));
        memset(&pdata, 0, sizeof(pdata));

        switch (dev->tuner) {
        case TUNER_RTL2832_FC0012:
                fe = dvb_attach(fc0012_attach, adap->fe[0],
                        dev->demod_i2c_adapter, &rtl2832u_fc0012_config);

                /* since fc0012 includs reading the signal strength delegate
                 * that to the tuner driver */
                adap->fe[0]->ops.read_signal_strength =
                                adap->fe[0]->ops.tuner_ops.get_rf_strength;
                break;
        case TUNER_RTL2832_FC0013:
                fe = dvb_attach(fc0013_attach, adap->fe[0],
                        dev->demod_i2c_adapter, 0xc6>>1, 0, FC_XTAL_28_8_MHZ);

                /* fc0013 also supports signal strength reading */
                adap->fe[0]->ops.read_signal_strength =
                                adap->fe[0]->ops.tuner_ops.get_rf_strength;
                break;
        case TUNER_RTL2832_E4000: {
                        struct e4000_config e4000_config = {
                                .fe = adap->fe[0],
                                .clock = 28800000,
                        };

                        strscpy(info.type, "e4000", I2C_NAME_SIZE);
                        info.addr = 0x64;
                        info.platform_data = &e4000_config;

                        request_module(info.type);
                        client = i2c_new_client_device(dev->demod_i2c_adapter,
                                                       &info);
                        if (!i2c_client_has_driver(client))
                                break;

                        if (!try_module_get(client->dev.driver->owner)) {
                                i2c_unregister_device(client);
                                break;
                        }

                        dev->i2c_client_tuner = client;
                        subdev = i2c_get_clientdata(client);
                }
                break;
        case TUNER_RTL2832_FC2580: {
                        struct fc2580_platform_data fc2580_pdata = {
                                .dvb_frontend = adap->fe[0],
                        };
                        struct i2c_board_info board_info = {};

                        strscpy(board_info.type, "fc2580", I2C_NAME_SIZE);
                        board_info.addr = 0x56;
                        board_info.platform_data = &fc2580_pdata;
                        request_module("fc2580");
                        client = i2c_new_client_device(dev->demod_i2c_adapter,
                                                       &board_info);
                        if (!i2c_client_has_driver(client))
                                break;
                        if (!try_module_get(client->dev.driver->owner)) {
                                i2c_unregister_device(client);
                                break;
                        }
                        dev->i2c_client_tuner = client;
                        subdev = fc2580_pdata.get_v4l2_subdev(client);
                }
                break;
        case TUNER_RTL2832_TUA9001: {
                struct tua9001_platform_data tua9001_pdata = {
                        .dvb_frontend = adap->fe[0],
                };
                struct i2c_board_info board_info = {};

                /* enable GPIO1 and GPIO4 as output */
                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x12);
                if (ret)
                        goto err;

                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x12, 0x12);
                if (ret)
                        goto err;

                strscpy(board_info.type, "tua9001", I2C_NAME_SIZE);
                board_info.addr = 0x60;
                board_info.platform_data = &tua9001_pdata;
                request_module("tua9001");
                client = i2c_new_client_device(dev->demod_i2c_adapter,
                                               &board_info);
                if (!i2c_client_has_driver(client))
                        break;
                if (!try_module_get(client->dev.driver->owner)) {
                        i2c_unregister_device(client);
                        break;
                }
                dev->i2c_client_tuner = client;
                break;
        }
        case TUNER_RTL2832_R820T:
                fe = dvb_attach(r820t_attach, adap->fe[0],
                                dev->demod_i2c_adapter,
                                &rtl2832u_r820t_config);

                /* Use tuner to get the signal strength */
                adap->fe[0]->ops.read_signal_strength =
                                adap->fe[0]->ops.tuner_ops.get_rf_strength;
                break;
        case TUNER_RTL2832_R828D:
                fe = dvb_attach(r820t_attach, adap->fe[0],
                                dev->demod_i2c_adapter,
                                &rtl2832u_r828d_config);
                adap->fe[0]->ops.read_signal_strength =
                                adap->fe[0]->ops.tuner_ops.get_rf_strength;

                if (adap->fe[1]) {
                        fe = dvb_attach(r820t_attach, adap->fe[1],
                                        dev->demod_i2c_adapter,
                                        &rtl2832u_r828d_config);
                        adap->fe[1]->ops.read_signal_strength =
                                        adap->fe[1]->ops.tuner_ops.get_rf_strength;
                }
                break;
        case TUNER_RTL2832_SI2157: {
                        struct si2157_config si2157_config = {
                                .fe = adap->fe[0],
                                .if_port = 0,
                                .inversion = false,
                        };

                        strscpy(info.type, "si2157", I2C_NAME_SIZE);
                        info.addr = 0x60;
                        info.platform_data = &si2157_config;
                        request_module(info.type);
                        client = i2c_new_client_device(&d->i2c_adap, &info);
                        if (!i2c_client_has_driver(client))
                                break;

                        if (!try_module_get(client->dev.driver->owner)) {
                                i2c_unregister_device(client);
                                break;
                        }

                        dev->i2c_client_tuner = client;
                        subdev = i2c_get_clientdata(client);

                        /* copy tuner ops for 2nd FE as tuner is shared */
                        if (adap->fe[1]) {
                                adap->fe[1]->tuner_priv =
                                                adap->fe[0]->tuner_priv;
                                memcpy(&adap->fe[1]->ops.tuner_ops,
                                                &adap->fe[0]->ops.tuner_ops,
                                                sizeof(struct dvb_tuner_ops));
                        }
                }
                break;
        default:
                dev_err(&d->intf->dev, "unknown tuner %d\n", dev->tuner);
        }
        if (fe == NULL && dev->i2c_client_tuner == NULL) {
                ret = -ENODEV;
                goto err;
        }

        /* register SDR */
        switch (dev->tuner) {
        case TUNER_RTL2832_FC2580:
        case TUNER_RTL2832_FC0012:
        case TUNER_RTL2832_FC0013:
        case TUNER_RTL2832_E4000:
        case TUNER_RTL2832_R820T:
        case TUNER_RTL2832_R828D:
                pdata.clk = dev->rtl2832_platform_data.clk;
                pdata.tuner = dev->tuner;
                pdata.regmap = dev->rtl2832_platform_data.regmap;
                pdata.dvb_frontend = adap->fe[0];
                pdata.dvb_usb_device = d;
                pdata.v4l2_subdev = subdev;

                request_module("%s", "rtl2832_sdr");
                pdev = platform_device_register_data(&d->intf->dev,
                                                     "rtl2832_sdr",
                                                     PLATFORM_DEVID_AUTO,
                                                     &pdata, sizeof(pdata));
                if (IS_ERR(pdev) || pdev->dev.driver == NULL)
                        break;
                dev->platform_device_sdr = pdev;
                break;
        default:
                dev_dbg(&d->intf->dev, "no SDR for tuner=%d\n", dev->tuner);
        }

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

static int rtl28xxu_tuner_attach(struct dvb_usb_adapter *adap)
{
        struct rtl28xxu_dev *dev = adap_to_priv(adap);

        if (dev->chip_id == CHIP_ID_RTL2831U)
                return rtl2831u_tuner_attach(adap);
        else
                return rtl2832u_tuner_attach(adap);
}

static int rtl28xxu_tuner_detach(struct dvb_usb_adapter *adap)
{
        struct dvb_usb_device *d = adap_to_d(adap);
        struct rtl28xxu_dev *dev = d_to_priv(d);
        struct i2c_client *client;
        struct platform_device *pdev;

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

        /* remove platform SDR */
        pdev = dev->platform_device_sdr;
        if (pdev)
                platform_device_unregister(pdev);

        /* remove I2C tuner */
        client = dev->i2c_client_tuner;
        if (client) {
                module_put(client->dev.driver->owner);
                i2c_unregister_device(client);
        }

        return 0;
}

static int rtl28xxu_init(struct dvb_usb_device *d)
{
        int ret;
        u8 val;

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

        /* init USB endpoints */
        ret = rtl28xxu_rd_reg(d, USB_SYSCTL_0, &val);
        if (ret)
                goto err;

        /* enable DMA and Full Packet Mode*/
        val |= 0x09;
        ret = rtl28xxu_wr_reg(d, USB_SYSCTL_0, val);
        if (ret)
                goto err;

        /* set EPA maximum packet size to 0x0200 */
        ret = rtl28xxu_wr_regs(d, USB_EPA_MAXPKT, "\x00\x02\x00\x00", 4);
        if (ret)
                goto err;

        /* change EPA FIFO length */
        ret = rtl28xxu_wr_regs(d, USB_EPA_FIFO_CFG, "\x14\x00\x00\x00", 4);
        if (ret)
                goto err;

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

static int rtl2831u_power_ctrl(struct dvb_usb_device *d, int onoff)
{
        int ret;
        u8 gpio, sys0, epa_ctl[2];

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

        /* demod adc */
        ret = rtl28xxu_rd_reg(d, SYS_SYS0, &sys0);
        if (ret)
                goto err;

        /* tuner power, read GPIOs */
        ret = rtl28xxu_rd_reg(d, SYS_GPIO_OUT_VAL, &gpio);
        if (ret)
                goto err;

        dev_dbg(&d->intf->dev, "RD SYS0=%02x GPIO_OUT_VAL=%02x\n", sys0, gpio);

        if (onoff) {
                gpio |= 0x01; /* GPIO0 = 1 */
                gpio &= (~0x10); /* GPIO4 = 0 */
                gpio |= 0x04; /* GPIO2 = 1, LED on */
                sys0 = sys0 & 0x0f;
                sys0 |= 0xe0;
                epa_ctl[0] = 0x00; /* clear stall */
                epa_ctl[1] = 0x00; /* clear reset */
        } else {
                gpio &= (~0x01); /* GPIO0 = 0 */
                gpio |= 0x10; /* GPIO4 = 1 */
                gpio &= (~0x04); /* GPIO2 = 1, LED off */
                sys0 = sys0 & (~0xc0);
                epa_ctl[0] = 0x10; /* set stall */
                epa_ctl[1] = 0x02; /* set reset */
        }

        dev_dbg(&d->intf->dev, "WR SYS0=%02x GPIO_OUT_VAL=%02x\n", sys0, gpio);

        /* demod adc */
        ret = rtl28xxu_wr_reg(d, SYS_SYS0, sys0);
        if (ret)
                goto err;

        /* tuner power, write GPIOs */
        ret = rtl28xxu_wr_reg(d, SYS_GPIO_OUT_VAL, gpio);
        if (ret)
                goto err;

        /* streaming EP: stall & reset */
        ret = rtl28xxu_wr_regs(d, USB_EPA_CTL, epa_ctl, 2);
        if (ret)
                goto err;

        if (onoff)
                usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));

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

static int rtl2832u_power_ctrl(struct dvb_usb_device *d, int onoff)
{
        int ret;

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

        if (onoff) {
                /* GPIO3=1, GPIO4=0 */
                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x08, 0x18);
                if (ret)
                        goto err;

                /* suspend? */
                ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL1, 0x00, 0x10);
                if (ret)
                        goto err;

                /* enable PLL */
                ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, 0x80, 0x80);
                if (ret)
                        goto err;

                /* disable reset */
                ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, 0x20, 0x20);
                if (ret)
                        goto err;

                /* streaming EP: clear stall & reset */
                ret = rtl28xxu_wr_regs(d, USB_EPA_CTL, "\x00\x00", 2);
                if (ret)
                        goto err;

                ret = usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));
                if (ret)
                        goto err;
        } else {
                /* GPIO4=1 */
                ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x10, 0x10);
                if (ret)
                        goto err;

                /* disable PLL */
                ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, 0x00, 0x80);
                if (ret)
                        goto err;

                /* streaming EP: set stall & reset */
                ret = rtl28xxu_wr_regs(d, USB_EPA_CTL, "\x10\x02", 2);
                if (ret)
                        goto err;
        }

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

static int rtl28xxu_power_ctrl(struct dvb_usb_device *d, int onoff)
{
        struct rtl28xxu_dev *dev = d_to_priv(d);

        if (dev->chip_id == CHIP_ID_RTL2831U)
                return rtl2831u_power_ctrl(d, onoff);
        else
                return rtl2832u_power_ctrl(d, onoff);
}

static int rtl28xxu_frontend_ctrl(struct dvb_frontend *fe, int onoff)
{
        struct dvb_usb_device *d = fe_to_d(fe);
        struct rtl28xxu_dev *dev = fe_to_priv(fe);
        struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
        int ret;
        u8 val;

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

        if (dev->chip_id == CHIP_ID_RTL2831U)
                return 0;

        if (fe->id == 0) {
                /* control internal demod ADC */
                if (onoff)
                        val = 0x48; /* enable ADC */
                else
                        val = 0x00; /* disable ADC */

                ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, val, 0x48);
                if (ret)
                        goto err;
        } else if (fe->id == 1) {
                /* bypass slave demod TS through master demod */
                ret = pdata->slave_ts_ctrl(dev->i2c_client_demod, onoff);
                if (ret)
                        goto err;
        }

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

#if IS_ENABLED(CONFIG_RC_CORE)
static int rtl2831u_rc_query(struct dvb_usb_device *d)
{
        int ret, i;
        struct rtl28xxu_dev *dev = d->priv;
        u8 buf[5];
        u32 rc_code;
        static const struct rtl28xxu_reg_val rc_nec_tab[] = {
                { 0x3033, 0x80 },
                { 0x3020, 0x43 },
                { 0x3021, 0x16 },
                { 0x3022, 0x16 },
                { 0x3023, 0x5a },
                { 0x3024, 0x2d },
                { 0x3025, 0x16 },
                { 0x3026, 0x01 },
                { 0x3028, 0xb0 },
                { 0x3029, 0x04 },
                { 0x302c, 0x88 },
                { 0x302e, 0x13 },
                { 0x3030, 0xdf },
                { 0x3031, 0x05 },
        };

        /* init remote controller */
        if (!dev->rc_active) {
                for (i = 0; i < ARRAY_SIZE(rc_nec_tab); i++) {
                        ret = rtl28xxu_wr_reg(d, rc_nec_tab[i].reg,
                                        rc_nec_tab[i].val);
                        if (ret)
                                goto err;
                }
                dev->rc_active = true;
        }

        ret = rtl28xxu_rd_regs(d, SYS_IRRC_RP, buf, 5);
        if (ret)
                goto err;

        if (buf[4] & 0x01) {
                enum rc_proto proto;

                if (buf[2] == (u8) ~buf[3]) {
                        if (buf[0] == (u8) ~buf[1]) {
                                /* NEC standard (16 bit) */
                                rc_code = RC_SCANCODE_NEC(buf[0], buf[2]);
                                proto = RC_PROTO_NEC;
                        } else {
                                /* NEC extended (24 bit) */
                                rc_code = RC_SCANCODE_NECX(buf[0] << 8 | buf[1],
                                                           buf[2]);
                                proto = RC_PROTO_NECX;
                        }
                } else {
                        /* NEC full (32 bit) */
                        rc_code = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
                                                    buf[2] << 8  | buf[3]);
                        proto = RC_PROTO_NEC32;
                }

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

                ret = rtl28xxu_wr_reg(d, SYS_IRRC_SR, 1);
                if (ret)
                        goto err;

                /* repeated intentionally to avoid extra keypress */
                ret = rtl28xxu_wr_reg(d, SYS_IRRC_SR, 1);
                if (ret)
                        goto err;
        }

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

static int rtl2831u_get_rc_config(struct dvb_usb_device *d,
                struct dvb_usb_rc *rc)
{
        rc->map_name = RC_MAP_EMPTY;
        rc->allowed_protos = RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX |
                                                        RC_PROTO_BIT_NEC32;
        rc->query = rtl2831u_rc_query;
        rc->interval = 400;

        return 0;
}

static int rtl2832u_rc_query(struct dvb_usb_device *d)
{
        int ret, i, len;
        struct rtl28xxu_dev *dev = d->priv;
        struct ir_raw_event ev = {};
        u8 buf[128];
        static const struct rtl28xxu_reg_val_mask refresh_tab[] = {
                {IR_RX_IF,               0x03, 0xff},
                {IR_RX_BUF_CTRL,         0x80, 0xff},
                {IR_RX_CTRL,             0x80, 0xff},
        };

        /* init remote controller */
        if (!dev->rc_active) {
                static const struct rtl28xxu_reg_val_mask init_tab[] = {
                        {SYS_DEMOD_CTL1,         0x00, 0x04},
                        {SYS_DEMOD_CTL1,         0x00, 0x08},
                        {USB_CTRL,               0x20, 0x20},
                        {SYS_GPIO_DIR,           0x00, 0x08},
                        {SYS_GPIO_OUT_EN,        0x08, 0x08},
                        {SYS_GPIO_OUT_VAL,       0x08, 0x08},
                        {IR_MAX_DURATION0,       0xd0, 0xff},
                        {IR_MAX_DURATION1,       0x07, 0xff},
                        {IR_IDLE_LEN0,           0xc0, 0xff},
                        {IR_IDLE_LEN1,           0x00, 0xff},
                        {IR_GLITCH_LEN,          0x03, 0xff},
                        {IR_RX_CLK,              0x09, 0xff},
                        {IR_RX_CFG,              0x1c, 0xff},
                        {IR_MAX_H_TOL_LEN,       0x1e, 0xff},
                        {IR_MAX_L_TOL_LEN,       0x1e, 0xff},
                        {IR_RX_CTRL,             0x80, 0xff},
                };

                for (i = 0; i < ARRAY_SIZE(init_tab); i++) {
                        ret = rtl28xxu_wr_reg_mask(d, init_tab[i].reg,
                                        init_tab[i].val, init_tab[i].mask);
                        if (ret)
                                goto err;
                }

                dev->rc_active = true;
        }

        ret = rtl28xxu_rd_reg(d, IR_RX_IF, &buf[0]);
        if (ret)
                goto err;

        if (buf[0] != 0x83)
                goto exit;

        ret = rtl28xxu_rd_reg(d, IR_RX_BC, &buf[0]);
        if (ret || buf[0] > sizeof(buf))
                goto err;

        len = buf[0];

        /* read raw code from hw */
        ret = rtl28xxu_rd_regs(d, IR_RX_BUF, buf, len);
        if (ret)
                goto err;

        /* let hw receive new code */
        for (i = 0; i < ARRAY_SIZE(refresh_tab); i++) {
                ret = rtl28xxu_wr_reg_mask(d, refresh_tab[i].reg,
                                refresh_tab[i].val, refresh_tab[i].mask);
                if (ret)
                        goto err;
        }

        /* pass data to Kernel IR decoder */
        for (i = 0; i < len; i++) {
                ev.pulse = buf[i] >> 7;
                ev.duration = 51 * (buf[i] & 0x7f);
                ir_raw_event_store_with_filter(d->rc_dev, &ev);
        }

        /* 'flush' ir_raw_event_store_with_filter() */
        ir_raw_event_handle(d->rc_dev);
exit:
        return ret;
err:
        dev_dbg(&d->intf->dev, "failed=%d\n", ret);
        return ret;
}

static int rtl2832u_get_rc_config(struct dvb_usb_device *d,
                struct dvb_usb_rc *rc)
{
        /* disable IR interrupts in order to avoid SDR sample loss */
        if (rtl28xxu_disable_rc)
                return rtl28xxu_wr_reg(d, IR_RX_IE, 0x00);

        /* load empty to enable rc */
        if (!rc->map_name)
                rc->map_name = RC_MAP_EMPTY;
        rc->allowed_protos = RC_PROTO_BIT_ALL_IR_DECODER;
        rc->driver_type = RC_DRIVER_IR_RAW;
        rc->query = rtl2832u_rc_query;
        rc->interval = 200;
        /* we program idle len to 0xc0, set timeout to one less */
        rc->timeout = 0xbf * 51;

        return 0;
}

static int rtl28xxu_get_rc_config(struct dvb_usb_device *d,
                struct dvb_usb_rc *rc)
{
        struct rtl28xxu_dev *dev = d_to_priv(d);

        if (dev->chip_id == CHIP_ID_RTL2831U)
                return rtl2831u_get_rc_config(d, rc);
        else
                return rtl2832u_get_rc_config(d, rc);
}
#else
#define rtl28xxu_get_rc_config NULL
#endif

static int rtl28xxu_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
        struct rtl28xxu_dev *dev = adap_to_priv(adap);

        if (dev->chip_id == CHIP_ID_RTL2831U) {
                struct rtl2830_platform_data *pdata = &dev->rtl2830_platform_data;

                return pdata->pid_filter_ctrl(adap->fe[0], onoff);
        } else {
                struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;

                return pdata->pid_filter_ctrl(adap->fe[0], onoff);
        }
}

static int rtl28xxu_pid_filter(struct dvb_usb_adapter *adap, int index,
                               u16 pid, int onoff)
{
        struct rtl28xxu_dev *dev = adap_to_priv(adap);

        if (dev->chip_id == CHIP_ID_RTL2831U) {
                struct rtl2830_platform_data *pdata = &dev->rtl2830_platform_data;

                return pdata->pid_filter(adap->fe[0], index, pid, onoff);
        } else {
                struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;

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

static const struct dvb_usb_device_properties rtl28xxu_props = {
        .driver_name = KBUILD_MODNAME,
        .owner = THIS_MODULE,
        .adapter_nr = adapter_nr,
        .size_of_priv = sizeof(struct rtl28xxu_dev),

        .identify_state = rtl28xxu_identify_state,
        .power_ctrl = rtl28xxu_power_ctrl,
        .frontend_ctrl = rtl28xxu_frontend_ctrl,
        .i2c_algo = &rtl28xxu_i2c_algo,
        .read_config = rtl28xxu_read_config,
        .frontend_attach = rtl28xxu_frontend_attach,
        .frontend_detach = rtl28xxu_frontend_detach,
        .tuner_attach = rtl28xxu_tuner_attach,
        .tuner_detach = rtl28xxu_tuner_detach,
        .init = rtl28xxu_init,
        .get_rc_config = rtl28xxu_get_rc_config,

        .num_adapters = 1,
        .adapter = {
                {
                        .caps = DVB_USB_ADAP_HAS_PID_FILTER |
                                DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,

                        .pid_filter_count = 32,
                        .pid_filter_ctrl = rtl28xxu_pid_filter_ctrl,
                        .pid_filter = rtl28xxu_pid_filter,

                        .stream = DVB_USB_STREAM_BULK(0x81, 6, 8 * 512),
                },
        },
};

static const struct usb_device_id rtl28xxu_id_table[] = {
        /* RTL2831U devices: */
        { DVB_USB_DEVICE(USB_VID_REALTEK, USB_PID_REALTEK_RTL2831U,
                &rtl28xxu_props, "Realtek RTL2831U reference design", NULL) },
        { DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT,
                &rtl28xxu_props, "Freecom USB2.0 DVB-T", NULL) },
        { DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT_2,
                &rtl28xxu_props, "Freecom USB2.0 DVB-T", NULL) },

        /* RTL2832U devices: */
        { DVB_USB_DEVICE(USB_VID_REALTEK, 0x2832,
                &rtl28xxu_props, "Realtek RTL2832U reference design", NULL) },
        { DVB_USB_DEVICE(USB_VID_REALTEK, 0x2838,
                &rtl28xxu_props, "Realtek RTL2832U reference design", NULL) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK_BLACK_REV1,
                &rtl28xxu_props, "TerraTec Cinergy T Stick Black", RC_MAP_TERRATEC_SLIM) },
        { DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_DELOCK_USB2_DVBT,
                &rtl28xxu_props, "G-Tek Electronics Group Lifeview LV5TDLX DVB-T", NULL) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK,
                &rtl28xxu_props, "TerraTec NOXON DAB Stick", NULL) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK_REV2,
                &rtl28xxu_props, "TerraTec NOXON DAB Stick (rev 2)", NULL) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK_REV3,
                &rtl28xxu_props, "TerraTec NOXON DAB Stick (rev 3)", NULL) },
        { DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_TREKSTOR_TERRES_2_0,
                &rtl28xxu_props, "Trekstor DVB-T Stick Terres 2.0", NULL) },
        { DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1101,
                &rtl28xxu_props, "Dexatek DK DVB-T Dongle", NULL) },
        { DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6680,
                &rtl28xxu_props, "DigitalNow Quad DVB-T Receiver", NULL) },
        { DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV_DONGLE_MINID,
                &rtl28xxu_props, "Leadtek Winfast DTV Dongle Mini D", NULL) },
        { DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV2000DS_PLUS,
                &rtl28xxu_props, "Leadtek WinFast DTV2000DS Plus", RC_MAP_LEADTEK_Y04G0051) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d3,
                &rtl28xxu_props, "TerraTec Cinergy T Stick RC (Rev. 3)", NULL) },
        { DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1102,
                &rtl28xxu_props, "Dexatek DK mini DVB-T Dongle", NULL) },
        { DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d7,
                &rtl28xxu_props, "TerraTec Cinergy T Stick+", NULL) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd3a8,
                &rtl28xxu_props, "ASUS My Cinema-U3100Mini Plus V2", NULL) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd393,
                &rtl28xxu_props, "GIGABYTE U7300", NULL) },
        { DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1104,
                &rtl28xxu_props, "MSI DIGIVOX Micro HD", NULL) },
        { DVB_USB_DEVICE(USB_VID_COMPRO, 0x0620,
                &rtl28xxu_props, "Compro VideoMate U620F", NULL) },
        { DVB_USB_DEVICE(USB_VID_COMPRO, 0x0650,
                &rtl28xxu_props, "Compro VideoMate U650F", NULL) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd394,
                &rtl28xxu_props, "MaxMedia HU394-T", NULL) },
        { DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6a03,
                &rtl28xxu_props, "Leadtek WinFast DTV Dongle mini", NULL) },
        { DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_CPYTO_REDI_PC50A,
                &rtl28xxu_props, "Crypto ReDi PC 50 A", NULL) },
        { DVB_USB_DEVICE(USB_VID_KYE, 0x707f,
                &rtl28xxu_props, "Genius TVGo DVB-T03", NULL) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd395,
                &rtl28xxu_props, "Peak DVB-T USB", NULL) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV20_RTL2832U,
                &rtl28xxu_props, "Sveon STV20", NULL) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV21,
                &rtl28xxu_props, "Sveon STV21", NULL) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV27,
                &rtl28xxu_props, "Sveon STV27", NULL) },
        { DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_TURBOX_DTT_2000,
                &rtl28xxu_props, "TURBO-X Pure TV Tuner DTT-2000", NULL) },
        { DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_PROLECTRIX_DV107669,
                &rtl28xxu_props, "PROlectrix DV107669", NULL) },

        /* RTL2832P devices: */
        { DVB_USB_DEVICE(USB_VID_HANFTEK, 0x0131,
                &rtl28xxu_props, "Astrometa DVB-T2",
                RC_MAP_ASTROMETA_T2HYBRID) },
        { DVB_USB_DEVICE(0x5654, 0xca42,
                &rtl28xxu_props, "GoTView MasterHD 3", NULL) },
        { }
};
MODULE_DEVICE_TABLE(usb, rtl28xxu_id_table);

static struct usb_driver rtl28xxu_usb_driver = {
        .name = KBUILD_MODNAME,
        .id_table = rtl28xxu_id_table,
        .probe = dvb_usbv2_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(rtl28xxu_usb_driver);

MODULE_DESCRIPTION("Realtek RTL28xxU DVB USB driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_AUTHOR("Thomas Mair <thomas.mair86@googlemail.com>");
MODULE_LICENSE("GPL");