drivers/media/dvb/dvb-usb/friio.c

   1 /* DVB USB compliant Linux driver for the Friio USB2.0 ISDB-T receiver.
   2  *
   3  * Copyright (C) 2009 Akihiro Tsukada <tskd2@yahoo.co.jp>
   4  *
   5  * This module is based off the the gl861 and vp702x modules.
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the Free
   9  * Software Foundation, version 2.
  10  *
  11  * see Documentation/dvb/README.dvb-usb for more information
  12  */
  13 #include "friio.h"
  14
  15 /* debug */
  16 int dvb_usb_friio_debug;
  17 module_param_named(debug, dvb_usb_friio_debug, int, 0644);
  18 MODULE_PARM_DESC(debug,
  19                  "set debugging level (1=info,2=xfer,4=rc,8=fe (or-able))."
  20                  DVB_USB_DEBUG_STATUS);
  21
  22 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  23
  24 /**
  25  * Indirect I2C access to the PLL via FE.
  26  * whole I2C protocol data to the PLL is sent via the FE's I2C register.
  27  * This is done by a control msg to the FE with the I2C data accompanied, and
  28  * a specific USB request number is assigned for that purpose.
  29  *
  30  * this func sends wbuf[1..] to the I2C register wbuf[0] at addr (= at FE).
  31  * TODO: refoctored, smarter i2c functions.
  32  */
  33 static int gl861_i2c_ctrlmsg_data(struct dvb_usb_device *d, u8 addr,
  34                                   u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  35 {
  36         u16 index = wbuf[0];    /* must be JDVBT90502_2ND_I2C_REG(=0xFE) */
  37         u16 value = addr << (8 + 1);
  38         int wo = (rbuf == NULL || rlen == 0);   /* write only */
  39         u8 req, type;
  40
  41         deb_xfer("write to PLL:0x%02x via FE reg:0x%02x, len:%d\n",
  42                  wbuf[1], wbuf[0], wlen - 1);
  43
  44         if (wo && wlen >= 2) {
  45                 req = GL861_REQ_I2C_DATA_CTRL_WRITE;
  46                 type = GL861_WRITE;
  47                 udelay(20);
  48                 return usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
  49                                        req, type, value, index,
  50                                        &wbuf[1], wlen - 1, 2000);
  51         }
  52
  53         deb_xfer("not supported ctrl-msg, aborting.");
  54         return -EINVAL;
  55 }
  56
  57 /* normal I2C access (without extra data arguments).
  58  * write to the register wbuf[0] at I2C address addr with the value wbuf[1],
  59  *  or read from the register wbuf[0].
  60  * register address can be 16bit (wbuf[2]<<8 | wbuf[0]) if wlen==3
  61  */
  62 static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr,
  63                          u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  64 {
  65         u16 index;
  66         u16 value = addr << (8 + 1);
  67         int wo = (rbuf == NULL || rlen == 0);   /* write-only */
  68         u8 req, type;
  69         unsigned int pipe;
  70
  71         /* special case for the indirect I2C access to the PLL via FE, */
  72         if (addr == friio_fe_config.demod_address &&
  73             wbuf[0] == JDVBT90502_2ND_I2C_REG)
  74                 return gl861_i2c_ctrlmsg_data(d, addr, wbuf, wlen, rbuf, rlen);
  75
  76         if (wo) {
  77                 req = GL861_REQ_I2C_WRITE;
  78                 type = GL861_WRITE;
  79                 pipe = usb_sndctrlpipe(d->udev, 0);
  80         } else {                /* rw */
  81                 req = GL861_REQ_I2C_READ;
  82                 type = GL861_READ;
  83                 pipe = usb_rcvctrlpipe(d->udev, 0);
  84         }
  85
  86         switch (wlen) {
  87         case 1:
  88                 index = wbuf[0];
  89                 break;
  90         case 2:
  91                 index = wbuf[0];
  92                 value = value + wbuf[1];
  93                 break;
  94         case 3:
  95                 /* special case for 16bit register-address */
  96                 index = (wbuf[2] << 8) | wbuf[0];
  97                 value = value + wbuf[1];
  98                 break;
  99         default:
 100                 deb_xfer("wlen = %x, aborting.", wlen);
 101                 return -EINVAL;
 102         }
 103         msleep(1);
 104         return usb_control_msg(d->udev, pipe, req, type,
 105                                value, index, rbuf, rlen, 2000);
 106 }
 107
 108 /* I2C */
 109 static int gl861_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
 110                           int num)
 111 {
 112         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 113         int i;
 114
 115
 116         if (num > 2)
 117                 return -EINVAL;
 118
 119         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 120                 return -EAGAIN;
 121
 122         for (i = 0; i < num; i++) {
 123                 /* write/read request */
 124                 if (i + 1 < num && (msg[i + 1].flags & I2C_M_RD)) {
 125                         if (gl861_i2c_msg(d, msg[i].addr,
 126                                           msg[i].buf, msg[i].len,
 127                                           msg[i + 1].buf, msg[i + 1].len) < 0)
 128                                 break;
 129                         i++;
 130                 } else
 131                         if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf,
 132                                           msg[i].len, NULL, 0) < 0)
 133                                 break;
 134         }
 135
 136         mutex_unlock(&d->i2c_mutex);
 137         return i;
 138 }
 139
 140 static u32 gl861_i2c_func(struct i2c_adapter *adapter)
 141 {
 142         return I2C_FUNC_I2C;
 143 }
 144
 145
 146 static int friio_ext_ctl(struct dvb_usb_adapter *adap,
 147                          u32 sat_color, int lnb_on)
 148 {
 149         int i;
 150         int ret;
 151         struct i2c_msg msg;
 152         u8 buf[2];
 153         u32 mask;
 154         u8 lnb = (lnb_on) ? FRIIO_CTL_LNB : 0;
 155
 156         msg.addr = 0x00;
 157         msg.flags = 0;
 158         msg.len = 2;
 159         msg.buf = buf;
 160
 161         buf[0] = 0x00;
 162
 163         /* send 2bit header (&B10) */
 164         buf[1] = lnb | FRIIO_CTL_LED | FRIIO_CTL_STROBE;
 165         ret = gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
 166         buf[1] |= FRIIO_CTL_CLK;
 167         ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
 168
 169         buf[1] = lnb | FRIIO_CTL_STROBE;
 170         ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
 171         buf[1] |= FRIIO_CTL_CLK;
 172         ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
 173
 174         /* send 32bit(satur, R, G, B) data in serial */
 175         mask = 1 << 31;
 176         for (i = 0; i < 32; i++) {
 177                 buf[1] = lnb | FRIIO_CTL_STROBE;
 178                 if (sat_color & mask)
 179                         buf[1] |= FRIIO_CTL_LED;
 180                 ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
 181                 buf[1] |= FRIIO_CTL_CLK;
 182                 ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
 183                 mask >>= 1;
 184         }
 185
 186         /* set the strobe off */
 187         buf[1] = lnb;
 188         ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
 189         buf[1] |= FRIIO_CTL_CLK;
 190         ret += gl861_i2c_xfer(&adap->dev->i2c_adap, &msg, 1);
 191
 192         return (ret == 70);
 193 }
 194
 195
 196 static int friio_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff);
 197
 198 /* TODO: move these init cmds to the FE's init routine? */
 199 static u8 streaming_init_cmds[][2] = {
 200         {0x33, 0x08},
 201         {0x37, 0x40},
 202         {0x3A, 0x1F},
 203         {0x3B, 0xFF},
 204         {0x3C, 0x1F},
 205         {0x3D, 0xFF},
 206         {0x38, 0x00},
 207         {0x35, 0x00},
 208         {0x39, 0x00},
 209         {0x36, 0x00},
 210 };
 211 static int cmdlen = sizeof(streaming_init_cmds) / 2;
 212
 213 /*
 214  * Command sequence in this init function is a replay
 215  *  of the captured USB commands from the Windows proprietary driver.
 216  */
 217 static int friio_initialize(struct dvb_usb_device *d)
 218 {
 219         int ret;
 220         int i;
 221         int retry = 0;
 222         u8 rbuf[2];
 223         u8 wbuf[3];
 224
 225         deb_info("%s called.\n", __func__);
 226
 227         /* use gl861_i2c_msg instead of gl861_i2c_xfer(), */
 228         /* because the i2c device is not set up yet. */
 229         wbuf[0] = 0x11;
 230         wbuf[1] = 0x02;
 231         ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
 232         if (ret < 0)
 233                 goto error;
 234         msleep(2);
 235
 236         wbuf[0] = 0x11;
 237         wbuf[1] = 0x00;
 238         ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
 239         if (ret < 0)
 240                 goto error;
 241         msleep(1);
 242
 243         /* following msgs should be in the FE's init code? */
 244         /* cmd sequence to identify the device type? (friio black/white) */
 245         wbuf[0] = 0x03;
 246         wbuf[1] = 0x80;
 247         /* can't use gl861_i2c_cmd, as the register-addr is 16bit(0x0100) */
 248         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
 249                               GL861_REQ_I2C_DATA_CTRL_WRITE, GL861_WRITE,
 250                               0x1200, 0x0100, wbuf, 2, 2000);
 251         if (ret < 0)
 252                 goto error;
 253
 254         msleep(2);
 255         wbuf[0] = 0x00;
 256         wbuf[2] = 0x01;         /* reg.0x0100 */
 257         wbuf[1] = 0x00;
 258         ret = gl861_i2c_msg(d, 0x12 >> 1, wbuf, 3, rbuf, 2);
 259         /* my Friio White returns 0xffff. */
 260         if (ret < 0 || rbuf[0] != 0xff || rbuf[1] != 0xff)
 261                 goto error;
 262
 263         msleep(2);
 264         wbuf[0] = 0x03;
 265         wbuf[1] = 0x80;
 266         ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
 267                               GL861_REQ_I2C_DATA_CTRL_WRITE, GL861_WRITE,
 268                               0x9000, 0x0100, wbuf, 2, 2000);
 269         if (ret < 0)
 270                 goto error;
 271
 272         msleep(2);
 273         wbuf[0] = 0x00;
 274         wbuf[2] = 0x01;         /* reg.0x0100 */
 275         wbuf[1] = 0x00;
 276         ret = gl861_i2c_msg(d, 0x90 >> 1, wbuf, 3, rbuf, 2);
 277         /* my Friio White returns 0xffff again. */
 278         if (ret < 0 || rbuf[0] != 0xff || rbuf[1] != 0xff)
 279                 goto error;
 280
 281         msleep(1);
 282
 283 restart:
 284         /* ============ start DEMOD init cmds ================== */
 285         /* read PLL status to clear the POR bit */
 286         wbuf[0] = JDVBT90502_2ND_I2C_REG;
 287         wbuf[1] = (FRIIO_PLL_ADDR << 1) + 1;    /* +1 for reading */
 288         ret = gl861_i2c_msg(d, FRIIO_DEMOD_ADDR, wbuf, 2, NULL, 0);
 289         if (ret < 0)
 290                 goto error;
 291
 292         msleep(5);
 293         /* note: DEMODULATOR has 16bit register-address. */
 294         wbuf[0] = 0x00;
 295         wbuf[2] = 0x01;         /* reg addr: 0x0100 */
 296         wbuf[1] = 0x00;         /* val: not used */
 297         ret = gl861_i2c_msg(d, FRIIO_DEMOD_ADDR, wbuf, 3, rbuf, 1);
 298         if (ret < 0)
 299                 goto error;
 300 /*
 301         msleep(1);
 302         wbuf[0] = 0x80;
 303         wbuf[1] = 0x00;
 304         ret = gl861_i2c_msg(d, FRIIO_DEMOD_ADDR, wbuf, 2, rbuf, 1);
 305         if (ret < 0)
 306                 goto error;
 307  */
 308         if (rbuf[0] & 0x80) {   /* still in PowerOnReset state? */
 309                 if (++retry > 3) {
 310                         deb_info("failed to get the correct"
 311                                  " FE demod status:0x%02x\n", rbuf[0]);
 312                         goto error;
 313                 }
 314                 msleep(100);
 315                 goto restart;
 316         }
 317
 318         /* TODO: check return value in rbuf */
 319         /* =========== end DEMOD init cmds ===================== */
 320         msleep(1);
 321
 322         wbuf[0] = 0x30;
 323         wbuf[1] = 0x04;
 324         ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
 325         if (ret < 0)
 326                 goto error;
 327
 328         msleep(2);
 329         /* following 2 cmds unnecessary? */
 330         wbuf[0] = 0x00;
 331         wbuf[1] = 0x01;
 332         ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
 333         if (ret < 0)
 334                 goto error;
 335
 336         wbuf[0] = 0x06;
 337         wbuf[1] = 0x0F;
 338         ret = gl861_i2c_msg(d, 0x00, wbuf, 2, NULL, 0);
 339         if (ret < 0)
 340                 goto error;
 341
 342         /* some streaming ctl cmds (maybe) */
 343         msleep(10);
 344         for (i = 0; i < cmdlen; i++) {
 345                 ret = gl861_i2c_msg(d, 0x00, streaming_init_cmds[i], 2,
 346                                     NULL, 0);
 347                 if (ret < 0)
 348                         goto error;
 349                 msleep(1);
 350         }
 351         msleep(20);
 352
 353         /* change the LED color etc. */
 354         ret = friio_streaming_ctrl(&d->adapter[0], 0);
 355         if (ret < 0)
 356                 goto error;
 357
 358         return 0;
 359
 360 error:
 361         deb_info("%s:ret == %d\n", __func__, ret);
 362         return -EIO;
 363 }
 364
 365 /* Callbacks for DVB USB */
 366
 367 static int friio_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 368 {
 369         int ret;
 370
 371         deb_info("%s called.(%d)\n", __func__, onoff);
 372
 373         /* set the LED color and saturation (and LNB on) */
 374         if (onoff)
 375                 ret = friio_ext_ctl(adap, 0x6400ff64, 1);
 376         else
 377                 ret = friio_ext_ctl(adap, 0x96ff00ff, 1);
 378
 379         if (ret != 1) {
 380                 deb_info("%s failed to send cmdx. ret==%d\n", __func__, ret);
 381                 return -EREMOTEIO;
 382         }
 383         return 0;
 384 }
 385
 386 static int friio_frontend_attach(struct dvb_usb_adapter *adap)
 387 {
 388         if (friio_initialize(adap->dev) < 0)
 389                 return -EIO;
 390
 391         adap->fe = jdvbt90502_attach(adap->dev);
 392         if (adap->fe == NULL)
 393                 return -EIO;
 394
 395         return 0;
 396 }
 397
 398 /* DVB USB Driver stuff */
 399 static struct dvb_usb_device_properties friio_properties;
 400
 401 static int friio_probe(struct usb_interface *intf,
 402                        const struct usb_device_id *id)
 403 {
 404         struct dvb_usb_device *d;
 405         struct usb_host_interface *alt;
 406         int ret;
 407
 408         if (intf->num_altsetting < GL861_ALTSETTING_COUNT)
 409                 return -ENODEV;
 410
 411         alt = usb_altnum_to_altsetting(intf, FRIIO_BULK_ALTSETTING);
 412         if (alt == NULL) {
 413                 deb_rc("not alt found!\n");
 414                 return -ENODEV;
 415         }
 416         ret = usb_set_interface(interface_to_usbdev(intf),
 417                                 alt->desc.bInterfaceNumber,
 418                                 alt->desc.bAlternateSetting);
 419         if (ret != 0) {
 420                 deb_rc("failed to set alt-setting!\n");
 421                 return ret;
 422         }
 423
 424         ret = dvb_usb_device_init(intf, &friio_properties,
 425                                   THIS_MODULE, &d, adapter_nr);
 426         if (ret == 0)
 427                 friio_streaming_ctrl(&d->adapter[0], 1);
 428
 429         return ret;
 430 }
 431
 432
 433 struct jdvbt90502_config friio_fe_config = {
 434         .demod_address = FRIIO_DEMOD_ADDR,
 435         .pll_address = FRIIO_PLL_ADDR,
 436 };
 437
 438 static struct i2c_algorithm gl861_i2c_algo = {
 439         .master_xfer   = gl861_i2c_xfer,
 440         .functionality = gl861_i2c_func,
 441 };
 442
 443 static struct usb_device_id friio_table[] = {
 444         { USB_DEVICE(USB_VID_774, USB_PID_FRIIO_WHITE) },
 445         { }             /* Terminating entry */
 446 };
 447 MODULE_DEVICE_TABLE(usb, friio_table);
 448
 449
 450 static struct dvb_usb_device_properties friio_properties = {
 451         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 452         .usb_ctrl = DEVICE_SPECIFIC,
 453
 454         .size_of_priv = 0,
 455
 456         .num_adapters = 1,
 457         .adapter = {
 458                 /* caps:0 =>  no pid filter, 188B TS packet */
 459                 /* GL861 has a HW pid filter, but no info available. */
 460                 {
 461                         .caps  = 0,
 462
 463                         .frontend_attach  = friio_frontend_attach,
 464                         .streaming_ctrl = friio_streaming_ctrl,
 465
 466                         .stream = {
 467                                 .type = USB_BULK,
 468                                 /* count <= MAX_NO_URBS_FOR_DATA_STREAM(10) */
 469                                 .count = 8,
 470                                 .endpoint = 0x01,
 471                                 .u = {
 472                                         /* GL861 has 6KB buf inside */
 473                                         .bulk = {
 474                                                 .buffersize = 16384,
 475                                         }
 476                                 }
 477                         },
 478                 }
 479         },
 480         .i2c_algo = &gl861_i2c_algo,
 481
 482         .num_device_descs = 1,
 483         .devices = {
 484                 {
 485                         .name = "774 Friio ISDB-T USB2.0",
 486                         .cold_ids = { NULL },
 487                         .warm_ids = { &friio_table[0], NULL },
 488                 },
 489         }
 490 };
 491
 492 static struct usb_driver friio_driver = {
 493         .name           = "dvb_usb_friio",
 494         .probe          = friio_probe,
 495         .disconnect     = dvb_usb_device_exit,
 496         .id_table       = friio_table,
 497 };
 498
 499
 500 /* module stuff */
 501 static int __init friio_module_init(void)
 502 {
 503         int ret;
 504
 505         ret = usb_register(&friio_driver);
 506         if (ret)
 507                 err("usb_register failed. Error number %d", ret);
 508
 509         return ret;
 510 }
 511
 512
 513 static void __exit friio_module_exit(void)
 514 {
 515         /* deregister this driver from the USB subsystem */
 516         usb_deregister(&friio_driver);
 517 }
 518
 519 module_init(friio_module_init);
 520 module_exit(friio_module_exit);
 521
 522 MODULE_AUTHOR("Akihiro Tsukada <tskd2@yahoo.co.jp>");
 523 MODULE_DESCRIPTION("Driver for Friio ISDB-T USB2.0 Receiver");
 524 MODULE_VERSION("0.2");
 525 MODULE_LICENSE("GPL");