dvb-ttusb-budget.c

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/*
 * TTUSB DVB driver
 *
 * Copyright (c) 2002 Holger Waechtler <[email protected]>
 * Copyright (c) 2003 Felix Domke <[email protected]>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License as
 *  published by the Free Software Foundation; either version 2 of
 *  the License, or (at your option) any later version.
 */
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/wait.h>
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/delay.h>
#include <linux/time.h>
#include <linux/errno.h>
#include <linux/jiffies.h>
#include <linux/mutex.h>
#include <linux/firmware.h>

#include "dvb_frontend.h"
#include "dmxdev.h"
#include "dvb_demux.h"
#include "dvb_net.h"
#include "ves1820.h"
#include "cx22700.h"
#include "tda1004x.h"
#include "stv0299.h"
#include "tda8083.h"
#include "stv0297.h"
#include "lnbp21.h"

#include <linux/dvb/frontend.h>
#include <linux/dvb/dmx.h>
#include <linux/pci.h>

/*
  TTUSB_HWSECTIONS:
    the DSP supports filtering in hardware, however, since the "muxstream"
    is a bit braindead (no matching channel masks or no matching filter mask),
    we won't support this - yet. it doesn't event support negative filters,
    so the best way is maybe to keep TTUSB_HWSECTIONS undef'd and just
    parse TS data. USB bandwidth will be a problem when having large
    datastreams, especially for dvb-net, but hey, that's not my problem.

  TTUSB_DISEQC, TTUSB_TONE:
    let the STC do the diseqc/tone stuff. this isn't supported at least with
    my TTUSB, so let it undef'd unless you want to implement another
    frontend. never tested.

  debug:
    define it to > 3 for really hardcore debugging. you probably don't want
    this unless the device doesn't load at all. > 2 for bandwidth statistics.
*/

static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

#define dprintk(x...) do { if (debug) printk(KERN_DEBUG x); } while (0)

#define ISO_BUF_COUNT      4
#define FRAMES_PER_ISO_BUF 4
#define ISO_FRAME_SIZE     912
#define TTUSB_MAXCHANNEL   32
#ifdef TTUSB_HWSECTIONS
#define TTUSB_MAXFILTER    16   /* ??? */
#endif

#define TTUSB_REV_2_2   0x22
#define TTUSB_BUDGET_NAME "ttusb_stc_fw"

struct ttusb {
    struct dvb_demux dvb_demux;
    struct dmxdev dmxdev;
    struct dvb_net dvbnet;

    /* and one for USB access. */
    struct mutex semi2c;
    struct mutex semusb;

    struct dvb_adapter adapter;
    struct usb_device *dev;

    struct i2c_adapter i2c_adap;

    int disconnecting;
    int iso_streaming;

    unsigned int bulk_out_pipe;
    unsigned int bulk_in_pipe;
    unsigned int isoc_in_pipe;

    void *iso_buffer;
    dma_addr_t iso_dma_handle;

    struct urb *iso_urb[ISO_BUF_COUNT];

    int running_feed_count;
    int last_channel;
    int last_filter;

    u8 c;           /* transaction counter, wraps around...  */
    fe_sec_tone_mode_t tone;
    fe_sec_voltage_t voltage;

    int mux_state;      // 0..2 - MuxSyncWord, 3 - nMuxPacks,    4 - muxpack
    u8 mux_npacks;
    u8 muxpack[256 + 8];
    int muxpack_ptr, muxpack_len;

    int insync;

    int cc;         /* MuxCounter - will increment on EVERY MUX PACKET */
    /* (including stuffing. yes. really.) */

    u8 last_result[32];

    int revision;

    struct dvb_frontend* fe;
};

/* ugly workaround ... don't know why it's necessary to read */
/* all result codes. */

static int ttusb_cmd(struct ttusb *ttusb,
          const u8 * data, int len, int needresult)
{
    int actual_len;
    int err;
    int i;

    if (debug >= 3) {
        printk(KERN_DEBUG ">");
        for (i = 0; i < len; ++i)
            printk(KERN_CONT " %02x", data[i]);
        printk(KERN_CONT "\n");
    }

    if (mutex_lock_interruptible(&ttusb->semusb) < 0)
        return -EAGAIN;

    err = usb_bulk_msg(ttusb->dev, ttusb->bulk_out_pipe,
               (u8 *) data, len, &actual_len, 1000);
    if (err != 0) {
        dprintk("%s: usb_bulk_msg(send) failed, err == %i!\n",
            __func__, err);
        mutex_unlock(&ttusb->semusb);
        return err;
    }
    if (actual_len != len) {
        dprintk("%s: only wrote %d of %d bytes\n", __func__,
            actual_len, len);
        mutex_unlock(&ttusb->semusb);
        return -1;
    }

    err = usb_bulk_msg(ttusb->dev, ttusb->bulk_in_pipe,
               ttusb->last_result, 32, &actual_len, 1000);

    if (err != 0) {
        printk("%s: failed, receive error %d\n", __func__,
               err);
        mutex_unlock(&ttusb->semusb);
        return err;
    }

    if (debug >= 3) {
        actual_len = ttusb->last_result[3] + 4;
        printk(KERN_DEBUG "<");
        for (i = 0; i < actual_len; ++i)
            printk(KERN_CONT " %02x", ttusb->last_result[i]);
        printk(KERN_CONT "\n");
    }

    if (!needresult)
        mutex_unlock(&ttusb->semusb);
    return 0;
}

static int ttusb_result(struct ttusb *ttusb, u8 * data, int len)
{
    memcpy(data, ttusb->last_result, len);
    mutex_unlock(&ttusb->semusb);
    return 0;
}

static int ttusb_i2c_msg(struct ttusb *ttusb,
          u8 addr, u8 * snd_buf, u8 snd_len, u8 * rcv_buf,
          u8 rcv_len)
{
    u8 b[0x28];
    u8 id = ++ttusb->c;
    int i, err;

    if (snd_len > 0x28 - 7 || rcv_len > 0x20 - 7)
        return -EINVAL;

    b[0] = 0xaa;
    b[1] = id;
    b[2] = 0x31;
    b[3] = snd_len + 3;
    b[4] = addr << 1;
    b[5] = snd_len;
    b[6] = rcv_len;

    for (i = 0; i < snd_len; i++)
        b[7 + i] = snd_buf[i];

    err = ttusb_cmd(ttusb, b, snd_len + 7, 1);

    if (err)
        return -EREMOTEIO;

    err = ttusb_result(ttusb, b, 0x20);

    /* check if the i2c transaction was successful */
    if ((snd_len != b[5]) || (rcv_len != b[6])) return -EREMOTEIO;

    if (rcv_len > 0) {

        if (err || b[0] != 0x55 || b[1] != id) {
            dprintk
                ("%s: usb_bulk_msg(recv) failed, err == %i, id == %02x, b == ",
                 __func__, err, id);
            return -EREMOTEIO;
        }

        for (i = 0; i < rcv_len; i++)
            rcv_buf[i] = b[7 + i];
    }

    return rcv_len;
}

static int master_xfer(struct i2c_adapter* adapter, struct i2c_msg *msg, int num)
{
    struct ttusb *ttusb = i2c_get_adapdata(adapter);
    int i = 0;
    int inc;

    if (mutex_lock_interruptible(&ttusb->semi2c) < 0)
        return -EAGAIN;

    while (i < num) {
        u8 addr, snd_len, rcv_len, *snd_buf, *rcv_buf;
        int err;

        if (num > i + 1 && (msg[i + 1].flags & I2C_M_RD)) {
            addr = msg[i].addr;
            snd_buf = msg[i].buf;
            snd_len = msg[i].len;
            rcv_buf = msg[i + 1].buf;
            rcv_len = msg[i + 1].len;
            inc = 2;
        } else {
            addr = msg[i].addr;
            snd_buf = msg[i].buf;
            snd_len = msg[i].len;
            rcv_buf = NULL;
            rcv_len = 0;
            inc = 1;
        }

        err = ttusb_i2c_msg(ttusb, addr,
                    snd_buf, snd_len, rcv_buf, rcv_len);

        if (err < rcv_len) {
            dprintk("%s: i == %i\n", __func__, i);
            break;
        }

        i += inc;
    }

    mutex_unlock(&ttusb->semi2c);
    return i;
}

static int ttusb_boot_dsp(struct ttusb *ttusb)
{
    const struct firmware *fw;
    int i, err;
    u8 b[40];

    err = request_firmware(&fw, "ttusb-budget/dspbootcode.bin",
                   &ttusb->dev->dev);
    if (err) {
        printk(KERN_ERR "ttusb-budget: failed to request firmware\n");
        return err;
    }

    /* BootBlock */
    b[0] = 0xaa;
    b[2] = 0x13;
    b[3] = 28;

    /* upload dsp code in 32 byte steps (36 didn't work for me ...) */
    /* 32 is max packet size, no messages should be splitted. */
    for (i = 0; i < fw->size; i += 28) {
        memcpy(&b[4], &fw->data[i], 28);

        b[1] = ++ttusb->c;

        err = ttusb_cmd(ttusb, b, 32, 0);
        if (err)
            goto done;
    }

    /* last block ... */
    b[1] = ++ttusb->c;
    b[2] = 0x13;
    b[3] = 0;

    err = ttusb_cmd(ttusb, b, 4, 0);
    if (err)
        goto done;

    /* BootEnd */
    b[1] = ++ttusb->c;
    b[2] = 0x14;
    b[3] = 0;

    err = ttusb_cmd(ttusb, b, 4, 0);

      done:
    release_firmware(fw);
    if (err) {
        dprintk("%s: usb_bulk_msg() failed, return value %i!\n",
            __func__, err);
    }

    return err;
}

static int ttusb_set_channel(struct ttusb *ttusb, int chan_id, int filter_type,
              int pid)
{
    int err;
    /* SetChannel */
    u8 b[] = { 0xaa, ++ttusb->c, 0x22, 4, chan_id, filter_type,
        (pid >> 8) & 0xff, pid & 0xff
    };

    err = ttusb_cmd(ttusb, b, sizeof(b), 0);
    return err;
}

static int ttusb_del_channel(struct ttusb *ttusb, int channel_id)
{
    int err;
    /* DelChannel */
    u8 b[] = { 0xaa, ++ttusb->c, 0x23, 1, channel_id };

    err = ttusb_cmd(ttusb, b, sizeof(b), 0);
    return err;
}

#ifdef TTUSB_HWSECTIONS
static int ttusb_set_filter(struct ttusb *ttusb, int filter_id,
             int associated_chan, u8 filter[8], u8 mask[8])
{
    int err;
    /* SetFilter */
    u8 b[] = { 0xaa, 0, 0x24, 0x1a, filter_id, associated_chan,
        filter[0], filter[1], filter[2], filter[3],
        filter[4], filter[5], filter[6], filter[7],
        filter[8], filter[9], filter[10], filter[11],
        mask[0], mask[1], mask[2], mask[3],
        mask[4], mask[5], mask[6], mask[7],
        mask[8], mask[9], mask[10], mask[11]
    };

    err = ttusb_cmd(ttusb, b, sizeof(b), 0);
    return err;
}

static int ttusb_del_filter(struct ttusb *ttusb, int filter_id)
{
    int err;
    /* DelFilter */
    u8 b[] = { 0xaa, ++ttusb->c, 0x25, 1, filter_id };

    err = ttusb_cmd(ttusb, b, sizeof(b), 0);
    return err;
}
#endif

static int ttusb_init_controller(struct ttusb *ttusb)
{
    u8 b0[] = { 0xaa, ++ttusb->c, 0x15, 1, 0 };
    u8 b1[] = { 0xaa, ++ttusb->c, 0x15, 1, 1 };
    u8 b2[] = { 0xaa, ++ttusb->c, 0x32, 1, 0 };
    /* i2c write read: 5 bytes, addr 0x10, 0x02 bytes write, 1 bytes read. */
    u8 b3[] =
        { 0xaa, ++ttusb->c, 0x31, 5, 0x10, 0x02, 0x01, 0x00, 0x1e };
    u8 b4[] =
        { 0x55, ttusb->c, 0x31, 4, 0x10, 0x02, 0x01, 0x00, 0x1e };

    u8 get_version[] = { 0xaa, ++ttusb->c, 0x17, 5, 0, 0, 0, 0, 0 };
    u8 get_dsp_version[0x20] =
        { 0xaa, ++ttusb->c, 0x26, 28, 0, 0, 0, 0, 0 };
    int err;

    /* reset board */
    if ((err = ttusb_cmd(ttusb, b0, sizeof(b0), 0)))
        return err;

    /* reset board (again?) */
    if ((err = ttusb_cmd(ttusb, b1, sizeof(b1), 0)))
        return err;

    ttusb_boot_dsp(ttusb);

    /* set i2c bit rate */
    if ((err = ttusb_cmd(ttusb, b2, sizeof(b2), 0)))
        return err;

    if ((err = ttusb_cmd(ttusb, b3, sizeof(b3), 1)))
        return err;

    err = ttusb_result(ttusb, b4, sizeof(b4));

    if ((err = ttusb_cmd(ttusb, get_version, sizeof(get_version), 1)))
        return err;

    if ((err = ttusb_result(ttusb, get_version, sizeof(get_version))))
        return err;

    dprintk("%s: stc-version: %c%c%c%c%c\n", __func__,
        get_version[4], get_version[5], get_version[6],
        get_version[7], get_version[8]);

    if (memcmp(get_version + 4, "V 0.0", 5) &&
        memcmp(get_version + 4, "V 1.1", 5) &&
        memcmp(get_version + 4, "V 2.1", 5) &&
        memcmp(get_version + 4, "V 2.2", 5)) {
        printk
            ("%s: unknown STC version %c%c%c%c%c, please report!\n",
             __func__, get_version[4], get_version[5],
             get_version[6], get_version[7], get_version[8]);
    }

    ttusb->revision = ((get_version[6] - '0') << 4) |
               (get_version[8] - '0');

    err =
        ttusb_cmd(ttusb, get_dsp_version, sizeof(get_dsp_version), 1);
    if (err)
        return err;

    err =
        ttusb_result(ttusb, get_dsp_version, sizeof(get_dsp_version));
    if (err)
        return err;
    printk("%s: dsp-version: %c%c%c\n", __func__,
           get_dsp_version[4], get_dsp_version[5], get_dsp_version[6]);
    return 0;
}

#ifdef TTUSB_DISEQC
static int ttusb_send_diseqc(struct dvb_frontend* fe,
                 const struct dvb_diseqc_master_cmd *cmd)
{
    struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
    u8 b[12] = { 0xaa, ++ttusb->c, 0x18 };

    int err;

    b[3] = 4 + 2 + cmd->msg_len;
    b[4] = 0xFF;        /* send diseqc master, not burst */
    b[5] = cmd->msg_len;

    memcpy(b + 5, cmd->msg, cmd->msg_len);

    /* Diseqc */
    if ((err = ttusb_cmd(ttusb, b, 4 + b[3], 0))) {
        dprintk("%s: usb_bulk_msg() failed, return value %i!\n",
            __func__, err);
    }

    return err;
}
#endif

static int ttusb_update_lnb(struct ttusb *ttusb)
{
    u8 b[] = { 0xaa, ++ttusb->c, 0x16, 5, /*power: */ 1,
        ttusb->voltage == SEC_VOLTAGE_18 ? 0 : 1,
        ttusb->tone == SEC_TONE_ON ? 1 : 0, 1, 1
    };
    int err;

    /* SetLNB */
    if ((err = ttusb_cmd(ttusb, b, sizeof(b), 0))) {
        dprintk("%s: usb_bulk_msg() failed, return value %i!\n",
            __func__, err);
    }

    return err;
}

static int ttusb_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
{
    struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;

    ttusb->voltage = voltage;
    return ttusb_update_lnb(ttusb);
}

#ifdef TTUSB_TONE
static int ttusb_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
{
    struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;

    ttusb->tone = tone;
    return ttusb_update_lnb(ttusb);
}
#endif


#if 0
static void ttusb_set_led_freq(struct ttusb *ttusb, u8 freq)
{
    u8 b[] = { 0xaa, ++ttusb->c, 0x19, 1, freq };
    int err, actual_len;

    err = ttusb_cmd(ttusb, b, sizeof(b), 0);
    if (err) {
        dprintk("%s: usb_bulk_msg() failed, return value %i!\n",
            __func__, err);
    }
}
#endif

/*****************************************************************************/

#ifdef TTUSB_HWSECTIONS
static void ttusb_handle_ts_data(struct ttusb_channel *channel,
                 const u8 * data, int len);
static void ttusb_handle_sec_data(struct ttusb_channel *channel,
                  const u8 * data, int len);
#endif

static int numpkt, numts, numstuff, numsec, numinvalid;
static unsigned long lastj;

static void ttusb_process_muxpack(struct ttusb *ttusb, const u8 * muxpack,
               int len)
{
    u16 csum = 0, cc;
    int i;
    for (i = 0; i < len; i += 2)
        csum ^= le16_to_cpup((__le16 *) (muxpack + i));
    if (csum) {
        printk("%s: muxpack with incorrect checksum, ignoring\n",
               __func__);
        numinvalid++;
        return;
    }

    cc = (muxpack[len - 4] << 8) | muxpack[len - 3];
    cc &= 0x7FFF;
    if ((cc != ttusb->cc) && (ttusb->cc != -1))
        printk("%s: cc discontinuity (%d frames missing)\n",
               __func__, (cc - ttusb->cc) & 0x7FFF);
    ttusb->cc = (cc + 1) & 0x7FFF;
    if (muxpack[0] & 0x80) {
#ifdef TTUSB_HWSECTIONS
        /* section data */
        int pusi = muxpack[0] & 0x40;
        int channel = muxpack[0] & 0x1F;
        int payload = muxpack[1];
        const u8 *data = muxpack + 2;
        /* check offset flag */
        if (muxpack[0] & 0x20)
            data++;

        ttusb_handle_sec_data(ttusb->channel + channel, data,
                      payload);
        data += payload;

        if ((!!(ttusb->muxpack[0] & 0x20)) ^
            !!(ttusb->muxpack[1] & 1))
            data++;
#warning TODO: pusi
        printk("cc: %04x\n", (data[0] << 8) | data[1]);
#endif
        numsec++;
    } else if (muxpack[0] == 0x47) {
#ifdef TTUSB_HWSECTIONS
        /* we have TS data here! */
        int pid = ((muxpack[1] & 0x0F) << 8) | muxpack[2];
        int channel;
        for (channel = 0; channel < TTUSB_MAXCHANNEL; ++channel)
            if (ttusb->channel[channel].active
                && (pid == ttusb->channel[channel].pid))
                ttusb_handle_ts_data(ttusb->channel +
                             channel, muxpack,
                             188);
#endif
        numts++;
        dvb_dmx_swfilter_packets(&ttusb->dvb_demux, muxpack, 1);
    } else if (muxpack[0] != 0) {
        numinvalid++;
        printk("illegal muxpack type %02x\n", muxpack[0]);
    } else
        numstuff++;
}

static void ttusb_process_frame(struct ttusb *ttusb, u8 * data, int len)
{
    int maxwork = 1024;
    while (len) {
        if (!(maxwork--)) {
            printk("%s: too much work\n", __func__);
            break;
        }

        switch (ttusb->mux_state) {
        case 0:
        case 1:
        case 2:
            len--;
            if (*data++ == 0xAA)
                ++ttusb->mux_state;
            else {
                ttusb->mux_state = 0;
                if (ttusb->insync) {
                    dprintk("%s: %02x\n",
                        __func__, data[-1]);
                    printk(KERN_INFO "%s: lost sync.\n",
                           __func__);
                    ttusb->insync = 0;
                }
            }
            break;
        case 3:
            ttusb->insync = 1;
            len--;
            ttusb->mux_npacks = *data++;
            ++ttusb->mux_state;
            ttusb->muxpack_ptr = 0;
            /* maximum bytes, until we know the length */
            ttusb->muxpack_len = 2;
            break;
        case 4:
            {
                int avail;
                avail = len;
                if (avail >
                    (ttusb->muxpack_len -
                     ttusb->muxpack_ptr))
                    avail =
                        ttusb->muxpack_len -
                        ttusb->muxpack_ptr;
                memcpy(ttusb->muxpack + ttusb->muxpack_ptr,
                       data, avail);
                ttusb->muxpack_ptr += avail;
                BUG_ON(ttusb->muxpack_ptr > 264);
                data += avail;
                len -= avail;
                /* determine length */
                if (ttusb->muxpack_ptr == 2) {
                    if (ttusb->muxpack[0] & 0x80) {
                        ttusb->muxpack_len =
                            ttusb->muxpack[1] + 2;
                        if (ttusb->
                            muxpack[0] & 0x20)
                            ttusb->
                                muxpack_len++;
                        if ((!!
                             (ttusb->
                              muxpack[0] & 0x20)) ^
                            !!(ttusb->
                               muxpack[1] & 1))
                            ttusb->
                                muxpack_len++;
                        ttusb->muxpack_len += 4;
                    } else if (ttusb->muxpack[0] ==
                           0x47)
                        ttusb->muxpack_len =
                            188 + 4;
                    else if (ttusb->muxpack[0] == 0x00)
                        ttusb->muxpack_len =
                            ttusb->muxpack[1] + 2 +
                            4;
                    else {
                        dprintk
                            ("%s: invalid state: first byte is %x\n",
                             __func__,
                             ttusb->muxpack[0]);
                        ttusb->mux_state = 0;
                    }
                }

                if ((ttusb->muxpack_ptr >= 2) &&
                    (ttusb->muxpack_ptr ==
                     ttusb->muxpack_len)) {
                    ttusb_process_muxpack(ttusb,
                                  ttusb->
                                  muxpack,
                                  ttusb->
                                  muxpack_ptr);
                    ttusb->muxpack_ptr = 0;
                    /* maximum bytes, until we know the length */
                    ttusb->muxpack_len = 2;

                    if (!ttusb->mux_npacks--) {
                        ttusb->mux_state = 0;
                        break;
                    }
                }
                break;
            }
        default:
            BUG();
            break;
        }
    }
}

static void ttusb_iso_irq(struct urb *urb)
{
    struct ttusb *ttusb = urb->context;
    struct usb_iso_packet_descriptor *d;
    u8 *data;
    int len, i;

    if (!ttusb->iso_streaming)
        return;

#if 0
    printk("%s: status %d, errcount == %d, length == %i\n",
           __func__,
           urb->status, urb->error_count, urb->actual_length);
#endif

    if (!urb->status) {
        for (i = 0; i < urb->number_of_packets; ++i) {
            numpkt++;
            if (time_after_eq(jiffies, lastj + HZ)) {
                dprintk("frames/s: %lu (ts: %d, stuff %d, "
                    "sec: %d, invalid: %d, all: %d)\n",
                    numpkt * HZ / (jiffies - lastj),
                    numts, numstuff, numsec, numinvalid,
                    numts + numstuff + numsec + numinvalid);
                numts = numstuff = numsec = numinvalid = 0;
                lastj = jiffies;
                numpkt = 0;
            }
            d = &urb->iso_frame_desc[i];
            data = urb->transfer_buffer + d->offset;
            len = d->actual_length;
            d->actual_length = 0;
            d->status = 0;
            ttusb_process_frame(ttusb, data, len);
        }
    }
    usb_submit_urb(urb, GFP_ATOMIC);
}

static void ttusb_free_iso_urbs(struct ttusb *ttusb)
{
    int i;

    for (i = 0; i < ISO_BUF_COUNT; i++)
        if (ttusb->iso_urb[i])
            usb_free_urb(ttusb->iso_urb[i]);

    pci_free_consistent(NULL,
                ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF *
                ISO_BUF_COUNT, ttusb->iso_buffer,
                ttusb->iso_dma_handle);
}

static int ttusb_alloc_iso_urbs(struct ttusb *ttusb)
{
    int i;

    ttusb->iso_buffer = pci_alloc_consistent(NULL,
                         ISO_FRAME_SIZE *
                         FRAMES_PER_ISO_BUF *
                         ISO_BUF_COUNT,
                         &ttusb->iso_dma_handle);

    if (!ttusb->iso_buffer) {
        dprintk("%s: pci_alloc_consistent - not enough memory\n",
            __func__);
        return -ENOMEM;
    }

    memset(ttusb->iso_buffer, 0,
           ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF * ISO_BUF_COUNT);

    for (i = 0; i < ISO_BUF_COUNT; i++) {
        struct urb *urb;

        if (!
            (urb =
             usb_alloc_urb(FRAMES_PER_ISO_BUF, GFP_ATOMIC))) {
            ttusb_free_iso_urbs(ttusb);
            return -ENOMEM;
        }

        ttusb->iso_urb[i] = urb;
    }

    return 0;
}

static void ttusb_stop_iso_xfer(struct ttusb *ttusb)
{
    int i;

    for (i = 0; i < ISO_BUF_COUNT; i++)
        usb_kill_urb(ttusb->iso_urb[i]);

    ttusb->iso_streaming = 0;
}

static int ttusb_start_iso_xfer(struct ttusb *ttusb)
{
    int i, j, err, buffer_offset = 0;

    if (ttusb->iso_streaming) {
        printk("%s: iso xfer already running!\n", __func__);
        return 0;
    }

    ttusb->cc = -1;
    ttusb->insync = 0;
    ttusb->mux_state = 0;

    for (i = 0; i < ISO_BUF_COUNT; i++) {
        int frame_offset = 0;
        struct urb *urb = ttusb->iso_urb[i];

        urb->dev = ttusb->dev;
        urb->context = ttusb;
        urb->complete = ttusb_iso_irq;
        urb->pipe = ttusb->isoc_in_pipe;
        urb->transfer_flags = URB_ISO_ASAP;
        urb->interval = 1;
        urb->number_of_packets = FRAMES_PER_ISO_BUF;
        urb->transfer_buffer_length =
            ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF;
        urb->transfer_buffer = ttusb->iso_buffer + buffer_offset;
        buffer_offset += ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF;

        for (j = 0; j < FRAMES_PER_ISO_BUF; j++) {
            urb->iso_frame_desc[j].offset = frame_offset;
            urb->iso_frame_desc[j].length = ISO_FRAME_SIZE;
            frame_offset += ISO_FRAME_SIZE;
        }
    }

    for (i = 0; i < ISO_BUF_COUNT; i++) {
        if ((err = usb_submit_urb(ttusb->iso_urb[i], GFP_ATOMIC))) {
            ttusb_stop_iso_xfer(ttusb);
            printk
                ("%s: failed urb submission (%i: err = %i)!\n",
                 __func__, i, err);
            return err;
        }
    }

    ttusb->iso_streaming = 1;

    return 0;
}

#ifdef TTUSB_HWSECTIONS
static void ttusb_handle_ts_data(struct dvb_demux_feed *dvbdmxfeed, const u8 * data,
              int len)
{
    dvbdmxfeed->cb.ts(data, len, 0, 0, &dvbdmxfeed->feed.ts, 0);
}

static void ttusb_handle_sec_data(struct dvb_demux_feed *dvbdmxfeed, const u8 * data,
               int len)
{
//      struct dvb_demux_feed *dvbdmxfeed = channel->dvbdmxfeed;
#error TODO: handle ugly stuff
//      dvbdmxfeed->cb.sec(data, len, 0, 0, &dvbdmxfeed->feed.sec, 0);
}
#endif

static int ttusb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
    struct ttusb *ttusb = (struct ttusb *) dvbdmxfeed->demux;
    int feed_type = 1;

    dprintk("ttusb_start_feed\n");

    switch (dvbdmxfeed->type) {
    case DMX_TYPE_TS:
        break;
    case DMX_TYPE_SEC:
        break;
    default:
        return -EINVAL;
    }

    if (dvbdmxfeed->type == DMX_TYPE_TS) {
        switch (dvbdmxfeed->pes_type) {
        case DMX_TS_PES_VIDEO:
        case DMX_TS_PES_AUDIO:
        case DMX_TS_PES_TELETEXT:
        case DMX_TS_PES_PCR:
        case DMX_TS_PES_OTHER:
            break;
        default:
            return -EINVAL;
        }
    }

#ifdef TTUSB_HWSECTIONS
#error TODO: allocate filters
    if (dvbdmxfeed->type == DMX_TYPE_TS) {
        feed_type = 1;
    } else if (dvbdmxfeed->type == DMX_TYPE_SEC) {
        feed_type = 2;
    }
#endif

    ttusb_set_channel(ttusb, dvbdmxfeed->index, feed_type, dvbdmxfeed->pid);

    if (0 == ttusb->running_feed_count++)
        ttusb_start_iso_xfer(ttusb);

    return 0;
}

static int ttusb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
    struct ttusb *ttusb = (struct ttusb *) dvbdmxfeed->demux;

    ttusb_del_channel(ttusb, dvbdmxfeed->index);

    if (--ttusb->running_feed_count == 0)
        ttusb_stop_iso_xfer(ttusb);

    return 0;
}

static int ttusb_setup_interfaces(struct ttusb *ttusb)
{
    usb_set_interface(ttusb->dev, 1, 1);

    ttusb->bulk_out_pipe = usb_sndbulkpipe(ttusb->dev, 1);
    ttusb->bulk_in_pipe = usb_rcvbulkpipe(ttusb->dev, 1);
    ttusb->isoc_in_pipe = usb_rcvisocpipe(ttusb->dev, 2);

    return 0;
}

#if 0
static u8 stc_firmware[8192];

static int stc_open(struct inode *inode, struct file *file)
{
    struct ttusb *ttusb = file->private_data;
    int addr;

    for (addr = 0; addr < 8192; addr += 16) {
        u8 snd_buf[2] = { addr >> 8, addr & 0xFF };
        ttusb_i2c_msg(ttusb, 0x50, snd_buf, 2, stc_firmware + addr,
                  16);
    }

    return 0;
}

static ssize_t stc_read(struct file *file, char *buf, size_t count,
         loff_t *offset)
{
    return simple_read_from_buffer(buf, count, offset, stc_firmware, 8192);
}

static int stc_release(struct inode *inode, struct file *file)
{
    return 0;
}

static const struct file_operations stc_fops = {
    .owner = THIS_MODULE,
    .read = stc_read,
    .open = stc_open,
    .release = stc_release,
};
#endif

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



static int alps_tdmb7_tuner_set_params(struct dvb_frontend *fe)
{
    struct dtv_frontend_properties *p = &fe->dtv_property_cache;
    struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
    u8 data[4];
    struct i2c_msg msg = {.addr=0x61, .flags=0, .buf=data, .len=sizeof(data) };
    u32 div;

    div = (p->frequency + 36166667) / 166667;

    data[0] = (div >> 8) & 0x7f;
    data[1] = div & 0xff;
    data[2] = ((div >> 10) & 0x60) | 0x85;
    data[3] = p->frequency < 592000000 ? 0x40 : 0x80;

    if (fe->ops.i2c_gate_ctrl)
        fe->ops.i2c_gate_ctrl(fe, 1);
    if (i2c_transfer(&ttusb->i2c_adap, &msg, 1) != 1) return -EIO;
    return 0;
}

static struct cx22700_config alps_tdmb7_config = {
    .demod_address = 0x43,
};





static int philips_tdm1316l_tuner_init(struct dvb_frontend* fe)
{
    struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
    static u8 td1316_init[] = { 0x0b, 0xf5, 0x85, 0xab };
    static u8 disable_mc44BC374c[] = { 0x1d, 0x74, 0xa0, 0x68 };
    struct i2c_msg tuner_msg = { .addr=0x60, .flags=0, .buf=td1316_init, .len=sizeof(td1316_init) };

    // setup PLL configuration
    if (fe->ops.i2c_gate_ctrl)
        fe->ops.i2c_gate_ctrl(fe, 1);
    if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1) return -EIO;
    msleep(1);

    // disable the mc44BC374c (do not check for errors)
    tuner_msg.addr = 0x65;
    tuner_msg.buf = disable_mc44BC374c;
    tuner_msg.len = sizeof(disable_mc44BC374c);
    if (fe->ops.i2c_gate_ctrl)
        fe->ops.i2c_gate_ctrl(fe, 1);
    if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1) {
        i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1);
    }

    return 0;
}

static int philips_tdm1316l_tuner_set_params(struct dvb_frontend *fe)
{
    struct dtv_frontend_properties *p = &fe->dtv_property_cache;
    struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
    u8 tuner_buf[4];
    struct i2c_msg tuner_msg = {.addr=0x60, .flags=0, .buf=tuner_buf, .len=sizeof(tuner_buf) };
    int tuner_frequency = 0;
    u8 band, cp, filter;

    // determine charge pump
    tuner_frequency = p->frequency + 36130000;
    if (tuner_frequency < 87000000) return -EINVAL;
    else if (tuner_frequency < 130000000) cp = 3;
    else if (tuner_frequency < 160000000) cp = 5;
    else if (tuner_frequency < 200000000) cp = 6;
    else if (tuner_frequency < 290000000) cp = 3;
    else if (tuner_frequency < 420000000) cp = 5;
    else if (tuner_frequency < 480000000) cp = 6;
    else if (tuner_frequency < 620000000) cp = 3;
    else if (tuner_frequency < 830000000) cp = 5;
    else if (tuner_frequency < 895000000) cp = 7;
    else return -EINVAL;

    // determine band
    if (p->frequency < 49000000)
        return -EINVAL;
    else if (p->frequency < 159000000)
        band = 1;
    else if (p->frequency < 444000000)
        band = 2;
    else if (p->frequency < 861000000)
        band = 4;
    else return -EINVAL;

    // setup PLL filter
    switch (p->bandwidth_hz) {
    case 6000000:
        tda1004x_writereg(fe, 0x0C, 0);
        filter = 0;
        break;

    case 7000000:
        tda1004x_writereg(fe, 0x0C, 0);
        filter = 0;
        break;

    case 8000000:
        tda1004x_writereg(fe, 0x0C, 0xFF);
        filter = 1;
        break;

    default:
        return -EINVAL;
    }

    // calculate divisor
    // ((36130000+((1000000/6)/2)) + Finput)/(1000000/6)
    tuner_frequency = (((p->frequency / 1000) * 6) + 217280) / 1000;

    // setup tuner buffer
    tuner_buf[0] = tuner_frequency >> 8;
    tuner_buf[1] = tuner_frequency & 0xff;
    tuner_buf[2] = 0xca;
    tuner_buf[3] = (cp << 5) | (filter << 3) | band;

    if (fe->ops.i2c_gate_ctrl)
        fe->ops.i2c_gate_ctrl(fe, 1);
    if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1)
        return -EIO;

    msleep(1);
    return 0;
}

static int philips_tdm1316l_request_firmware(struct dvb_frontend* fe, const struct firmware **fw, char* name)
{
    struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;

    return request_firmware(fw, name, &ttusb->dev->dev);
}

static struct tda1004x_config philips_tdm1316l_config = {

    .demod_address = 0x8,
    .invert = 1,
    .invert_oclk = 0,
    .request_firmware = philips_tdm1316l_request_firmware,
};

static u8 alps_bsbe1_inittab[] = {
    0x01, 0x15,
    0x02, 0x30,
    0x03, 0x00,
    0x04, 0x7d,             /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
    0x05, 0x35,             /* I2CT = 0, SCLT = 1, SDAT = 1 */
    0x06, 0x40,             /* DAC not used, set to high impendance mode */
    0x07, 0x00,             /* DAC LSB */
    0x08, 0x40,             /* DiSEqC off, LNB power on OP2/LOCK pin on */
    0x09, 0x00,             /* FIFO */
    0x0c, 0x51,             /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
    0x0d, 0x82,             /* DC offset compensation = ON, beta_agc1 = 2 */
    0x0e, 0x23,             /* alpha_tmg = 2, beta_tmg = 3 */
    0x10, 0x3f,             // AGC2  0x3d
    0x11, 0x84,
    0x12, 0xb9,
    0x15, 0xc9,             // lock detector threshold
    0x16, 0x00,
    0x17, 0x00,
    0x18, 0x00,
    0x19, 0x00,
    0x1a, 0x00,
    0x1f, 0x50,
    0x20, 0x00,
    0x21, 0x00,
    0x22, 0x00,
    0x23, 0x00,
    0x28, 0x00,             // out imp: normal  out type: parallel FEC mode:0
    0x29, 0x1e,             // 1/2 threshold
    0x2a, 0x14,             // 2/3 threshold
    0x2b, 0x0f,             // 3/4 threshold
    0x2c, 0x09,             // 5/6 threshold
    0x2d, 0x05,             // 7/8 threshold
    0x2e, 0x01,
    0x31, 0x1f,             // test all FECs
    0x32, 0x19,             // viterbi and synchro search
    0x33, 0xfc,             // rs control
    0x34, 0x93,             // error control
    0x0f, 0x92,
    0xff, 0xff
};

static u8 alps_bsru6_inittab[] = {
    0x01, 0x15,
    0x02, 0x30,
    0x03, 0x00,
    0x04, 0x7d,     /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
    0x05, 0x35,     /* I2CT = 0, SCLT = 1, SDAT = 1 */
    0x06, 0x40,     /* DAC not used, set to high impendance mode */
    0x07, 0x00,     /* DAC LSB */
    0x08, 0x40,     /* DiSEqC off, LNB power on OP2/LOCK pin on */
    0x09, 0x00,     /* FIFO */
    0x0c, 0x51,     /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
    0x0d, 0x82,     /* DC offset compensation = ON, beta_agc1 = 2 */
    0x0e, 0x23,     /* alpha_tmg = 2, beta_tmg = 3 */
    0x10, 0x3f,     // AGC2  0x3d
    0x11, 0x84,
    0x12, 0xb9,
    0x15, 0xc9,     // lock detector threshold
    0x16, 0x00,
    0x17, 0x00,
    0x18, 0x00,
    0x19, 0x00,
    0x1a, 0x00,
    0x1f, 0x50,
    0x20, 0x00,
    0x21, 0x00,
    0x22, 0x00,
    0x23, 0x00,
    0x28, 0x00,     // out imp: normal  out type: parallel FEC mode:0
    0x29, 0x1e,     // 1/2 threshold
    0x2a, 0x14,     // 2/3 threshold
    0x2b, 0x0f,     // 3/4 threshold
    0x2c, 0x09,     // 5/6 threshold
    0x2d, 0x05,     // 7/8 threshold
    0x2e, 0x01,
    0x31, 0x1f,     // test all FECs
    0x32, 0x19,     // viterbi and synchro search
    0x33, 0xfc,     // rs control
    0x34, 0x93,     // error control
    0x0f, 0x52,
    0xff, 0xff
};

static int alps_stv0299_set_symbol_rate(struct dvb_frontend *fe, u32 srate, u32 ratio)
{
    u8 aclk = 0;
    u8 bclk = 0;

    if (srate < 1500000) {
        aclk = 0xb7;
        bclk = 0x47;
    } else if (srate < 3000000) {
        aclk = 0xb7;
        bclk = 0x4b;
    } else if (srate < 7000000) {
        aclk = 0xb7;
        bclk = 0x4f;
    } else if (srate < 14000000) {
        aclk = 0xb7;
        bclk = 0x53;
    } else if (srate < 30000000) {
        aclk = 0xb6;
        bclk = 0x53;
    } else if (srate < 45000000) {
        aclk = 0xb4;
        bclk = 0x51;
    }

    stv0299_writereg(fe, 0x13, aclk);
    stv0299_writereg(fe, 0x14, bclk);
    stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
    stv0299_writereg(fe, 0x20, (ratio >> 8) & 0xff);
    stv0299_writereg(fe, 0x21, (ratio) & 0xf0);

    return 0;
}

static int philips_tsa5059_tuner_set_params(struct dvb_frontend *fe)
{
    struct dtv_frontend_properties *p = &fe->dtv_property_cache;
    struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
    u8 buf[4];
    u32 div;
    struct i2c_msg msg = {.addr = 0x61,.flags = 0,.buf = buf,.len = sizeof(buf) };

    if ((p->frequency < 950000) || (p->frequency > 2150000))
        return -EINVAL;

    div = (p->frequency + (125 - 1)) / 125; /* round correctly */
    buf[0] = (div >> 8) & 0x7f;
    buf[1] = div & 0xff;
    buf[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
    buf[3] = 0xC4;

    if (p->frequency > 1530000)
        buf[3] = 0xC0;

    /* BSBE1 wants XCE bit set */
    if (ttusb->revision == TTUSB_REV_2_2)
        buf[3] |= 0x20;

    if (fe->ops.i2c_gate_ctrl)
        fe->ops.i2c_gate_ctrl(fe, 1);
    if (i2c_transfer(&ttusb->i2c_adap, &msg, 1) != 1)
        return -EIO;

    return 0;
}

static struct stv0299_config alps_stv0299_config = {
    .demod_address = 0x68,
    .inittab = alps_bsru6_inittab,
    .mclk = 88000000UL,
    .invert = 1,
    .skip_reinit = 0,
    .lock_output = STV0299_LOCKOUTPUT_1,
    .volt13_op0_op1 = STV0299_VOLT13_OP1,
    .min_delay_ms = 100,
    .set_symbol_rate = alps_stv0299_set_symbol_rate,
};

static int ttusb_novas_grundig_29504_491_tuner_set_params(struct dvb_frontend *fe)
{
    struct dtv_frontend_properties *p = &fe->dtv_property_cache;
    struct ttusb* ttusb = (struct ttusb*) fe->dvb->priv;
    u8 buf[4];
    u32 div;
    struct i2c_msg msg = {.addr = 0x61,.flags = 0,.buf = buf,.len = sizeof(buf) };

    div = p->frequency / 125;

    buf[0] = (div >> 8) & 0x7f;
    buf[1] = div & 0xff;
    buf[2] = 0x8e;
    buf[3] = 0x00;

    if (fe->ops.i2c_gate_ctrl)
        fe->ops.i2c_gate_ctrl(fe, 1);
    if (i2c_transfer(&ttusb->i2c_adap, &msg, 1) != 1)
        return -EIO;

    return 0;
}

static struct tda8083_config ttusb_novas_grundig_29504_491_config = {

    .demod_address = 0x68,
};

static int alps_tdbe2_tuner_set_params(struct dvb_frontend *fe)
{
    struct dtv_frontend_properties *p = &fe->dtv_property_cache;
    struct ttusb* ttusb = fe->dvb->priv;
    u32 div;
    u8 data[4];
    struct i2c_msg msg = { .addr = 0x62, .flags = 0, .buf = data, .len = sizeof(data) };

    div = (p->frequency + 35937500 + 31250) / 62500;

    data[0] = (div >> 8) & 0x7f;
    data[1] = div & 0xff;
    data[2] = 0x85 | ((div >> 10) & 0x60);
    data[3] = (p->frequency < 174000000 ? 0x88 : p->frequency < 470000000 ? 0x84 : 0x81);

    if (fe->ops.i2c_gate_ctrl)
        fe->ops.i2c_gate_ctrl(fe, 1);
    if (i2c_transfer (&ttusb->i2c_adap, &msg, 1) != 1)
        return -EIO;

    return 0;
}


static struct ves1820_config alps_tdbe2_config = {
    .demod_address = 0x09,
    .xin = 57840000UL,
    .invert = 1,
    .selagc = VES1820_SELAGC_SIGNAMPERR,
};

static u8 read_pwm(struct ttusb* ttusb)
{
    u8 b = 0xff;
    u8 pwm;
    struct i2c_msg msg[] = { { .addr = 0x50,.flags = 0,.buf = &b,.len = 1 },
                { .addr = 0x50,.flags = I2C_M_RD,.buf = &pwm,.len = 1} };

    if ((i2c_transfer(&ttusb->i2c_adap, msg, 2) != 2) || (pwm == 0xff))
        pwm = 0x48;

    return pwm;
}


static int dvbc_philips_tdm1316l_tuner_set_params(struct dvb_frontend *fe)
{
    struct dtv_frontend_properties *p = &fe->dtv_property_cache;
    struct ttusb *ttusb = (struct ttusb *) fe->dvb->priv;
    u8 tuner_buf[5];
    struct i2c_msg tuner_msg = {.addr = 0x60,
                    .flags = 0,
                    .buf = tuner_buf,
                    .len = sizeof(tuner_buf) };
    int tuner_frequency = 0;
    u8 band, cp, filter;

    // determine charge pump
    tuner_frequency = p->frequency;
    if      (tuner_frequency <  87000000) {return -EINVAL;}
    else if (tuner_frequency < 130000000) {cp = 3; band = 1;}
    else if (tuner_frequency < 160000000) {cp = 5; band = 1;}
    else if (tuner_frequency < 200000000) {cp = 6; band = 1;}
    else if (tuner_frequency < 290000000) {cp = 3; band = 2;}
    else if (tuner_frequency < 420000000) {cp = 5; band = 2;}
    else if (tuner_frequency < 480000000) {cp = 6; band = 2;}
    else if (tuner_frequency < 620000000) {cp = 3; band = 4;}
    else if (tuner_frequency < 830000000) {cp = 5; band = 4;}
    else if (tuner_frequency < 895000000) {cp = 7; band = 4;}
    else {return -EINVAL;}

    // assume PLL filter should always be 8MHz for the moment.
    filter = 1;

    // calculate divisor
    // (Finput + Fif)/Fref; Fif = 36125000 Hz, Fref = 62500 Hz
    tuner_frequency = ((p->frequency + 36125000) / 62500);

    // setup tuner buffer
    tuner_buf[0] = tuner_frequency >> 8;
    tuner_buf[1] = tuner_frequency & 0xff;
    tuner_buf[2] = 0xc8;
    tuner_buf[3] = (cp << 5) | (filter << 3) | band;
    tuner_buf[4] = 0x80;

    if (fe->ops.i2c_gate_ctrl)
        fe->ops.i2c_gate_ctrl(fe, 1);
    if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1) {
        printk("dvb-ttusb-budget: dvbc_philips_tdm1316l_pll_set Error 1\n");
        return -EIO;
    }

    msleep(50);

    if (fe->ops.i2c_gate_ctrl)
        fe->ops.i2c_gate_ctrl(fe, 1);
    if (i2c_transfer(&ttusb->i2c_adap, &tuner_msg, 1) != 1) {
        printk("dvb-ttusb-budget: dvbc_philips_tdm1316l_pll_set Error 2\n");
        return -EIO;
    }

    msleep(1);

    return 0;
}

static u8 dvbc_philips_tdm1316l_inittab[] = {
    0x80, 0x21,
    0x80, 0x20,
    0x81, 0x01,
    0x81, 0x00,
    0x00, 0x09,
    0x01, 0x69,
    0x03, 0x00,
    0x04, 0x00,
    0x07, 0x00,
    0x08, 0x00,
    0x20, 0x00,
    0x21, 0x40,
    0x22, 0x00,
    0x23, 0x00,
    0x24, 0x40,
    0x25, 0x88,
    0x30, 0xff,
    0x31, 0x00,
    0x32, 0xff,
    0x33, 0x00,
    0x34, 0x50,
    0x35, 0x7f,
    0x36, 0x00,
    0x37, 0x20,
    0x38, 0x00,
    0x40, 0x1c,
    0x41, 0xff,
    0x42, 0x29,
    0x43, 0x20,
    0x44, 0xff,
    0x45, 0x00,
    0x46, 0x00,
    0x49, 0x04,
    0x4a, 0xff,
    0x4b, 0x7f,
    0x52, 0x30,
    0x55, 0xae,
    0x56, 0x47,
    0x57, 0xe1,
    0x58, 0x3a,
    0x5a, 0x1e,
    0x5b, 0x34,
    0x60, 0x00,
    0x63, 0x00,
    0x64, 0x00,
    0x65, 0x00,
    0x66, 0x00,
    0x67, 0x00,
    0x68, 0x00,
    0x69, 0x00,
    0x6a, 0x02,
    0x6b, 0x00,
    0x70, 0xff,
    0x71, 0x00,
    0x72, 0x00,
    0x73, 0x00,
    0x74, 0x0c,
    0x80, 0x00,
    0x81, 0x00,
    0x82, 0x00,
    0x83, 0x00,
    0x84, 0x04,
    0x85, 0x80,
    0x86, 0x24,
    0x87, 0x78,
    0x88, 0x00,
    0x89, 0x00,
    0x90, 0x01,
    0x91, 0x01,
    0xa0, 0x00,
    0xa1, 0x00,
    0xa2, 0x00,
    0xb0, 0x91,
    0xb1, 0x0b,
    0xc0, 0x4b,
    0xc1, 0x00,
    0xc2, 0x00,
    0xd0, 0x00,
    0xd1, 0x00,
    0xd2, 0x00,
    0xd3, 0x00,
    0xd4, 0x00,
    0xd5, 0x00,
    0xde, 0x00,
    0xdf, 0x00,
    0x61, 0x38,
    0x62, 0x0a,
    0x53, 0x13,
    0x59, 0x08,
    0x55, 0x00,
    0x56, 0x40,
    0x57, 0x08,
    0x58, 0x3d,
    0x88, 0x10,
    0xa0, 0x00,
    0xa0, 0x00,
    0xa0, 0x00,
    0xa0, 0x04,
    0xff, 0xff,
};

static struct stv0297_config dvbc_philips_tdm1316l_config = {
    .demod_address = 0x1c,
    .inittab = dvbc_philips_tdm1316l_inittab,
    .invert = 0,
};

static void frontend_init(struct ttusb* ttusb)
{
    switch(le16_to_cpu(ttusb->dev->descriptor.idProduct)) {
    case 0x1003: // Hauppauge/TT Nova-USB-S budget (stv0299/ALPS BSRU6|BSBE1(tsa5059))
        // try the stv0299 based first
        ttusb->fe = dvb_attach(stv0299_attach, &alps_stv0299_config, &ttusb->i2c_adap);
        if (ttusb->fe != NULL) {
            ttusb->fe->ops.tuner_ops.set_params = philips_tsa5059_tuner_set_params;

            if(ttusb->revision == TTUSB_REV_2_2) { // ALPS BSBE1
                alps_stv0299_config.inittab = alps_bsbe1_inittab;
                dvb_attach(lnbp21_attach, ttusb->fe, &ttusb->i2c_adap, 0, 0);
            } else { // ALPS BSRU6
                ttusb->fe->ops.set_voltage = ttusb_set_voltage;
            }
            break;
        }

        // Grundig 29504-491
        ttusb->fe = dvb_attach(tda8083_attach, &ttusb_novas_grundig_29504_491_config, &ttusb->i2c_adap);
        if (ttusb->fe != NULL) {
            ttusb->fe->ops.tuner_ops.set_params = ttusb_novas_grundig_29504_491_tuner_set_params;
            ttusb->fe->ops.set_voltage = ttusb_set_voltage;
            break;
        }
        break;

    case 0x1004: // Hauppauge/TT DVB-C budget (ves1820/ALPS TDBE2(sp5659))
        ttusb->fe = dvb_attach(ves1820_attach, &alps_tdbe2_config, &ttusb->i2c_adap, read_pwm(ttusb));
        if (ttusb->fe != NULL) {
            ttusb->fe->ops.tuner_ops.set_params = alps_tdbe2_tuner_set_params;
            break;
        }

        ttusb->fe = dvb_attach(stv0297_attach, &dvbc_philips_tdm1316l_config, &ttusb->i2c_adap);
        if (ttusb->fe != NULL) {
            ttusb->fe->ops.tuner_ops.set_params = dvbc_philips_tdm1316l_tuner_set_params;
            break;
        }
        break;

    case 0x1005: // Hauppauge/TT Nova-USB-t budget (tda10046/Philips td1316(tda6651tt) OR cx22700/ALPS TDMB7(??))
        // try the ALPS TDMB7 first
        ttusb->fe = dvb_attach(cx22700_attach, &alps_tdmb7_config, &ttusb->i2c_adap);
        if (ttusb->fe != NULL) {
            ttusb->fe->ops.tuner_ops.set_params = alps_tdmb7_tuner_set_params;
            break;
        }

        // Philips td1316
        ttusb->fe = dvb_attach(tda10046_attach, &philips_tdm1316l_config, &ttusb->i2c_adap);
        if (ttusb->fe != NULL) {
            ttusb->fe->ops.tuner_ops.init = philips_tdm1316l_tuner_init;
            ttusb->fe->ops.tuner_ops.set_params = philips_tdm1316l_tuner_set_params;
            break;
        }
        break;
    }

    if (ttusb->fe == NULL) {
        printk("dvb-ttusb-budget: A frontend driver was not found for device [%04x:%04x]\n",
               le16_to_cpu(ttusb->dev->descriptor.idVendor),
               le16_to_cpu(ttusb->dev->descriptor.idProduct));
    } else {
        if (dvb_register_frontend(&ttusb->adapter, ttusb->fe)) {
            printk("dvb-ttusb-budget: Frontend registration failed!\n");
            dvb_frontend_detach(ttusb->fe);
            ttusb->fe = NULL;
        }
    }
}



static struct i2c_algorithm ttusb_dec_algo = {
    .master_xfer    = master_xfer,
    .functionality  = functionality,
};

static int ttusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
    struct usb_device *udev;
    struct ttusb *ttusb;
    int result;

    dprintk("%s: TTUSB DVB connected\n", __func__);

    udev = interface_to_usbdev(intf);

    if (intf->altsetting->desc.bInterfaceNumber != 1) return -ENODEV;

    if (!(ttusb = kzalloc(sizeof(struct ttusb), GFP_KERNEL)))
        return -ENOMEM;

    ttusb->dev = udev;
    ttusb->c = 0;
    ttusb->mux_state = 0;
    mutex_init(&ttusb->semi2c);

    mutex_lock(&ttusb->semi2c);

    mutex_init(&ttusb->semusb);

    ttusb_setup_interfaces(ttusb);

    result = ttusb_alloc_iso_urbs(ttusb);
    if (result < 0) {
        dprintk("%s: ttusb_alloc_iso_urbs - failed\n", __func__);
        mutex_unlock(&ttusb->semi2c);
        kfree(ttusb);
        return result;
    }

    if (ttusb_init_controller(ttusb))
        printk("ttusb_init_controller: error\n");

    mutex_unlock(&ttusb->semi2c);

    result = dvb_register_adapter(&ttusb->adapter,
                      "Technotrend/Hauppauge Nova-USB",
                      THIS_MODULE, &udev->dev, adapter_nr);
    if (result < 0) {
        ttusb_free_iso_urbs(ttusb);
        kfree(ttusb);
        return result;
    }
    ttusb->adapter.priv = ttusb;

    /* i2c */
    memset(&ttusb->i2c_adap, 0, sizeof(struct i2c_adapter));
    strcpy(ttusb->i2c_adap.name, "TTUSB DEC");

    i2c_set_adapdata(&ttusb->i2c_adap, ttusb);

    ttusb->i2c_adap.algo              = &ttusb_dec_algo;
    ttusb->i2c_adap.algo_data         = NULL;
    ttusb->i2c_adap.dev.parent    = &udev->dev;

    result = i2c_add_adapter(&ttusb->i2c_adap);
    if (result)
        goto err_unregister_adapter;

    memset(&ttusb->dvb_demux, 0, sizeof(ttusb->dvb_demux));

    ttusb->dvb_demux.dmx.capabilities =
        DMX_TS_FILTERING | DMX_SECTION_FILTERING;
    ttusb->dvb_demux.priv = NULL;
#ifdef TTUSB_HWSECTIONS
    ttusb->dvb_demux.filternum = TTUSB_MAXFILTER;
#else
    ttusb->dvb_demux.filternum = 32;
#endif
    ttusb->dvb_demux.feednum = TTUSB_MAXCHANNEL;
    ttusb->dvb_demux.start_feed = ttusb_start_feed;
    ttusb->dvb_demux.stop_feed = ttusb_stop_feed;
    ttusb->dvb_demux.write_to_decoder = NULL;

    result = dvb_dmx_init(&ttusb->dvb_demux);
    if (result < 0) {
        printk("ttusb_dvb: dvb_dmx_init failed (errno = %d)\n", result);
        result = -ENODEV;
        goto err_i2c_del_adapter;
    }
//FIXME dmxdev (nur WAS?)
    ttusb->dmxdev.filternum = ttusb->dvb_demux.filternum;
    ttusb->dmxdev.demux = &ttusb->dvb_demux.dmx;
    ttusb->dmxdev.capabilities = 0;

    result = dvb_dmxdev_init(&ttusb->dmxdev, &ttusb->adapter);
    if (result < 0) {
        printk("ttusb_dvb: dvb_dmxdev_init failed (errno = %d)\n",
               result);
        result = -ENODEV;
        goto err_release_dmx;
    }

    if (dvb_net_init(&ttusb->adapter, &ttusb->dvbnet, &ttusb->dvb_demux.dmx)) {
        printk("ttusb_dvb: dvb_net_init failed!\n");
        result = -ENODEV;
        goto err_release_dmxdev;
    }

    usb_set_intfdata(intf, (void *) ttusb);

    frontend_init(ttusb);

    return 0;

err_release_dmxdev:
    dvb_dmxdev_release(&ttusb->dmxdev);
err_release_dmx:
    dvb_dmx_release(&ttusb->dvb_demux);
err_i2c_del_adapter:
    i2c_del_adapter(&ttusb->i2c_adap);
err_unregister_adapter:
    dvb_unregister_adapter (&ttusb->adapter);
    return result;
}

static void ttusb_disconnect(struct usb_interface *intf)
{
    struct ttusb *ttusb = usb_get_intfdata(intf);

    usb_set_intfdata(intf, NULL);

    ttusb->disconnecting = 1;

    ttusb_stop_iso_xfer(ttusb);

    ttusb->dvb_demux.dmx.close(&ttusb->dvb_demux.dmx);
    dvb_net_release(&ttusb->dvbnet);
    dvb_dmxdev_release(&ttusb->dmxdev);
    dvb_dmx_release(&ttusb->dvb_demux);
    if (ttusb->fe != NULL) {
        dvb_unregister_frontend(ttusb->fe);
        dvb_frontend_detach(ttusb->fe);
    }
    i2c_del_adapter(&ttusb->i2c_adap);
    dvb_unregister_adapter(&ttusb->adapter);

    ttusb_free_iso_urbs(ttusb);

    kfree(ttusb);

    dprintk("%s: TTUSB DVB disconnected\n", __func__);
}

static struct usb_device_id ttusb_table[] = {
    {USB_DEVICE(0xb48, 0x1003)},
    {USB_DEVICE(0xb48, 0x1004)},
    {USB_DEVICE(0xb48, 0x1005)},
    {}
};

MODULE_DEVICE_TABLE(usb, ttusb_table);

static struct usb_driver ttusb_driver = {
      .name     = "ttusb",
      .probe        = ttusb_probe,
      .disconnect   = ttusb_disconnect,
      .id_table     = ttusb_table,
};

module_usb_driver(ttusb_driver);

MODULE_AUTHOR("Holger Waechtler <[email protected]>");
MODULE_DESCRIPTION("TTUSB DVB Driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE("ttusb-budget/dspbootcode.bin");