linux/drivers/media/usb/dvb-usb/digitv.c
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   1/* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0
   2 * receiver
   3 *
   4 * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@posteo.de)
   5 *
   6 * partly based on the SDK published by Nebula Electronics
   7 *
   8 *      This program is free software; you can redistribute it and/or modify it
   9 *      under the terms of the GNU General Public License as published by the Free
  10 *      Software Foundation, version 2.
  11 *
  12 * see Documentation/media/dvb-drivers/dvb-usb.rst for more information
  13 */
  14#include "digitv.h"
  15
  16#include "mt352.h"
  17#include "nxt6000.h"
  18
  19/* debug */
  20static int dvb_usb_digitv_debug;
  21module_param_named(debug,dvb_usb_digitv_debug, int, 0644);
  22MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
  23
  24DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  25
  26#define deb_rc(args...)   dprintk(dvb_usb_digitv_debug,0x01,args)
  27
  28static int digitv_ctrl_msg(struct dvb_usb_device *d,
  29                u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
  30{
  31        struct digitv_state *st = d->priv;
  32        int ret, wo;
  33
  34        wo = (rbuf == NULL || rlen == 0); /* write-only */
  35
  36        if (wlen > 4 || rlen > 4)
  37                return -EIO;
  38
  39        memset(st->sndbuf, 0, 7);
  40        memset(st->rcvbuf, 0, 7);
  41
  42        st->sndbuf[0] = cmd;
  43        st->sndbuf[1] = vv;
  44        st->sndbuf[2] = wo ? wlen : rlen;
  45
  46        if (wo) {
  47                memcpy(&st->sndbuf[3], wbuf, wlen);
  48                ret = dvb_usb_generic_write(d, st->sndbuf, 7);
  49        } else {
  50                ret = dvb_usb_generic_rw(d, st->sndbuf, 7, st->rcvbuf, 7, 10);
  51                memcpy(rbuf, &st->rcvbuf[3], rlen);
  52        }
  53        return ret;
  54}
  55
  56/* I2C */
  57static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
  58{
  59        struct dvb_usb_device *d = i2c_get_adapdata(adap);
  60        int i;
  61
  62        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
  63                return -EAGAIN;
  64
  65        if (num > 2)
  66                warn("more than 2 i2c messages at a time is not handled yet. TODO.");
  67
  68        for (i = 0; i < num; i++) {
  69                /* write/read request */
  70                if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
  71                        if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,
  72                                                msg[i+1].buf,msg[i+1].len) < 0)
  73                                break;
  74                        i++;
  75                } else
  76                        if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],
  77                                                &msg[i].buf[1],msg[i].len-1,NULL,0) < 0)
  78                                break;
  79        }
  80
  81        mutex_unlock(&d->i2c_mutex);
  82        return i;
  83}
  84
  85static u32 digitv_i2c_func(struct i2c_adapter *adapter)
  86{
  87        return I2C_FUNC_I2C;
  88}
  89
  90static struct i2c_algorithm digitv_i2c_algo = {
  91        .master_xfer   = digitv_i2c_xfer,
  92        .functionality = digitv_i2c_func,
  93};
  94
  95/* Callbacks for DVB USB */
  96static int digitv_identify_state (struct usb_device *udev, struct
  97                dvb_usb_device_properties *props, struct dvb_usb_device_description **desc,
  98                int *cold)
  99{
 100        *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
 101        return 0;
 102}
 103
 104static int digitv_mt352_demod_init(struct dvb_frontend *fe)
 105{
 106        static u8 reset_buf[] = { 0x89, 0x38,  0x8a, 0x2d, 0x50, 0x80 };
 107        static u8 init_buf[] = { 0x68, 0xa0,  0x8e, 0x40,  0x53, 0x50,
 108                        0x67, 0x20,  0x7d, 0x01,  0x7c, 0x00,  0x7a, 0x00,
 109                        0x79, 0x20,  0x57, 0x05,  0x56, 0x31,  0x88, 0x0f,
 110                        0x75, 0x32 };
 111        int i;
 112
 113        for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)
 114                mt352_write(fe, &reset_buf[i], 2);
 115
 116        msleep(1);
 117
 118        for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)
 119                mt352_write(fe, &init_buf[i], 2);
 120
 121        return 0;
 122}
 123
 124static struct mt352_config digitv_mt352_config = {
 125        .demod_init = digitv_mt352_demod_init,
 126};
 127
 128static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe)
 129{
 130        struct dvb_usb_adapter *adap = fe->dvb->priv;
 131        u8 b[5];
 132
 133        fe->ops.tuner_ops.calc_regs(fe, b, sizeof(b));
 134        if (fe->ops.i2c_gate_ctrl)
 135                fe->ops.i2c_gate_ctrl(fe, 1);
 136        return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0);
 137}
 138
 139static struct nxt6000_config digitv_nxt6000_config = {
 140        .clock_inversion = 1,
 141};
 142
 143static int digitv_frontend_attach(struct dvb_usb_adapter *adap)
 144{
 145        struct digitv_state *st = adap->dev->priv;
 146
 147        adap->fe_adap[0].fe = dvb_attach(mt352_attach, &digitv_mt352_config,
 148                                         &adap->dev->i2c_adap);
 149        if ((adap->fe_adap[0].fe) != NULL) {
 150                st->is_nxt6000 = 0;
 151                return 0;
 152        }
 153        adap->fe_adap[0].fe = dvb_attach(nxt6000_attach,
 154                                         &digitv_nxt6000_config,
 155                                         &adap->dev->i2c_adap);
 156        if ((adap->fe_adap[0].fe) != NULL) {
 157                st->is_nxt6000 = 1;
 158                return 0;
 159        }
 160        return -EIO;
 161}
 162
 163static int digitv_tuner_attach(struct dvb_usb_adapter *adap)
 164{
 165        struct digitv_state *st = adap->dev->priv;
 166
 167        if (!dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, NULL, DVB_PLL_TDED4))
 168                return -ENODEV;
 169
 170        if (st->is_nxt6000)
 171                adap->fe_adap[0].fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params;
 172
 173        return 0;
 174}
 175
 176static struct rc_map_table rc_map_digitv_table[] = {
 177        { 0x5f55, KEY_0 },
 178        { 0x6f55, KEY_1 },
 179        { 0x9f55, KEY_2 },
 180        { 0xaf55, KEY_3 },
 181        { 0x5f56, KEY_4 },
 182        { 0x6f56, KEY_5 },
 183        { 0x9f56, KEY_6 },
 184        { 0xaf56, KEY_7 },
 185        { 0x5f59, KEY_8 },
 186        { 0x6f59, KEY_9 },
 187        { 0x9f59, KEY_TV },
 188        { 0xaf59, KEY_AUX },
 189        { 0x5f5a, KEY_DVD },
 190        { 0x6f5a, KEY_POWER },
 191        { 0x9f5a, KEY_CAMERA },     /* labelled 'Picture' */
 192        { 0xaf5a, KEY_AUDIO },
 193        { 0x5f65, KEY_INFO },
 194        { 0x6f65, KEY_F13 },     /* 16:9 */
 195        { 0x9f65, KEY_F14 },     /* 14:9 */
 196        { 0xaf65, KEY_EPG },
 197        { 0x5f66, KEY_EXIT },
 198        { 0x6f66, KEY_MENU },
 199        { 0x9f66, KEY_UP },
 200        { 0xaf66, KEY_DOWN },
 201        { 0x5f69, KEY_LEFT },
 202        { 0x6f69, KEY_RIGHT },
 203        { 0x9f69, KEY_ENTER },
 204        { 0xaf69, KEY_CHANNELUP },
 205        { 0x5f6a, KEY_CHANNELDOWN },
 206        { 0x6f6a, KEY_VOLUMEUP },
 207        { 0x9f6a, KEY_VOLUMEDOWN },
 208        { 0xaf6a, KEY_RED },
 209        { 0x5f95, KEY_GREEN },
 210        { 0x6f95, KEY_YELLOW },
 211        { 0x9f95, KEY_BLUE },
 212        { 0xaf95, KEY_SUBTITLE },
 213        { 0x5f96, KEY_F15 },     /* AD */
 214        { 0x6f96, KEY_TEXT },
 215        { 0x9f96, KEY_MUTE },
 216        { 0xaf96, KEY_REWIND },
 217        { 0x5f99, KEY_STOP },
 218        { 0x6f99, KEY_PLAY },
 219        { 0x9f99, KEY_FASTFORWARD },
 220        { 0xaf99, KEY_F16 },     /* chapter */
 221        { 0x5f9a, KEY_PAUSE },
 222        { 0x6f9a, KEY_PLAY },
 223        { 0x9f9a, KEY_RECORD },
 224        { 0xaf9a, KEY_F17 },     /* picture in picture */
 225        { 0x5fa5, KEY_KPPLUS },  /* zoom in */
 226        { 0x6fa5, KEY_KPMINUS }, /* zoom out */
 227        { 0x9fa5, KEY_F18 },     /* capture */
 228        { 0xafa5, KEY_F19 },     /* web */
 229        { 0x5fa6, KEY_EMAIL },
 230        { 0x6fa6, KEY_PHONE },
 231        { 0x9fa6, KEY_PC },
 232};
 233
 234static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 235{
 236        int i;
 237        u8 key[5];
 238        u8 b[4] = { 0 };
 239
 240        *event = 0;
 241        *state = REMOTE_NO_KEY_PRESSED;
 242
 243        digitv_ctrl_msg(d,USB_READ_REMOTE,0,NULL,0,&key[1],4);
 244
 245        /* Tell the device we've read the remote. Not sure how necessary
 246           this is, but the Nebula SDK does it. */
 247        digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
 248
 249        /* if something is inside the buffer, simulate key press */
 250        if (key[1] != 0)
 251        {
 252                  for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) {
 253                        if (rc5_custom(&d->props.rc.legacy.rc_map_table[i]) == key[1] &&
 254                            rc5_data(&d->props.rc.legacy.rc_map_table[i]) == key[2]) {
 255                                *event = d->props.rc.legacy.rc_map_table[i].keycode;
 256                                *state = REMOTE_KEY_PRESSED;
 257                                return 0;
 258                        }
 259                }
 260        }
 261
 262        if (key[0] != 0)
 263                deb_rc("key: %*ph\n", 5, key);
 264        return 0;
 265}
 266
 267/* DVB USB Driver stuff */
 268static struct dvb_usb_device_properties digitv_properties;
 269
 270static int digitv_probe(struct usb_interface *intf,
 271                const struct usb_device_id *id)
 272{
 273        struct dvb_usb_device *d;
 274        int ret = dvb_usb_device_init(intf, &digitv_properties, THIS_MODULE, &d,
 275                                      adapter_nr);
 276        if (ret == 0) {
 277                u8 b[4] = { 0 };
 278
 279                if (d != NULL) { /* do that only when the firmware is loaded */
 280                        b[0] = 1;
 281                        digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0);
 282
 283                        b[0] = 0;
 284                        digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
 285                }
 286        }
 287        return ret;
 288}
 289
 290static struct usb_device_id digitv_table [] = {
 291                { USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
 292                { }             /* Terminating entry */
 293};
 294MODULE_DEVICE_TABLE (usb, digitv_table);
 295
 296static struct dvb_usb_device_properties digitv_properties = {
 297        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 298
 299        .usb_ctrl = CYPRESS_FX2,
 300        .firmware = "dvb-usb-digitv-02.fw",
 301
 302        .size_of_priv = sizeof(struct digitv_state),
 303
 304        .num_adapters = 1,
 305        .adapter = {
 306                {
 307                .num_frontends = 1,
 308                .fe = {{
 309                        .frontend_attach  = digitv_frontend_attach,
 310                        .tuner_attach     = digitv_tuner_attach,
 311
 312                        /* parameter for the MPEG2-data transfer */
 313                        .stream = {
 314                                .type = USB_BULK,
 315                                .count = 7,
 316                                .endpoint = 0x02,
 317                                .u = {
 318                                        .bulk = {
 319                                                .buffersize = 4096,
 320                                        }
 321                                }
 322                        },
 323                }},
 324                }
 325        },
 326        .identify_state   = digitv_identify_state,
 327
 328        .rc.legacy = {
 329                .rc_interval      = 1000,
 330                .rc_map_table     = rc_map_digitv_table,
 331                .rc_map_size      = ARRAY_SIZE(rc_map_digitv_table),
 332                .rc_query         = digitv_rc_query,
 333        },
 334
 335        .i2c_algo         = &digitv_i2c_algo,
 336
 337        .generic_bulk_ctrl_endpoint = 0x01,
 338
 339        .num_device_descs = 1,
 340        .devices = {
 341                {   "Nebula Electronics uDigiTV DVB-T USB2.0)",
 342                        { &digitv_table[0], NULL },
 343                        { NULL },
 344                },
 345                { NULL },
 346        }
 347};
 348
 349static struct usb_driver digitv_driver = {
 350        .name           = "dvb_usb_digitv",
 351        .probe          = digitv_probe,
 352        .disconnect = dvb_usb_device_exit,
 353        .id_table       = digitv_table,
 354};
 355
 356module_usb_driver(digitv_driver);
 357
 358MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
 359MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
 360MODULE_VERSION("1.0-alpha");
 361MODULE_LICENSE("GPL");
 362