drivers/media/dvb/dvb-usb/m920x.c

   1 /* DVB USB compliant linux driver for MSI Mega Sky 580 DVB-T USB2.0 receiver
   2  *
   3  * Copyright (C) 2006 Aapo Tahkola (aet@rasterburn.org)
   4  *
   5  *      This program is free software; you can redistribute it and/or modify it
   6  *      under the terms of the GNU General Public License as published by the Free
   7  *      Software Foundation, version 2.
   8  *
   9  * see Documentation/dvb/README.dvb-usb for more information
  10  */
  11
  12 #include "m920x.h"
  13
  14 #include "mt352.h"
  15 #include "mt352_priv.h"
  16 #include "qt1010.h"
  17
  18 /* debug */
  19 static int dvb_usb_m920x_debug;
  20 module_param_named(debug,dvb_usb_m920x_debug, int, 0644);
  21 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
  22
  23 static struct dvb_usb_rc_key megasky_rc_keys [] = {
  24         { 0x0, 0x12, KEY_POWER },
  25         { 0x0, 0x1e, KEY_CYCLEWINDOWS }, /* min/max */
  26         { 0x0, 0x02, KEY_CHANNELUP },
  27         { 0x0, 0x05, KEY_CHANNELDOWN },
  28         { 0x0, 0x03, KEY_VOLUMEUP },
  29         { 0x0, 0x06, KEY_VOLUMEDOWN },
  30         { 0x0, 0x04, KEY_MUTE },
  31         { 0x0, 0x07, KEY_OK }, /* TS */
  32         { 0x0, 0x08, KEY_STOP },
  33         { 0x0, 0x09, KEY_MENU }, /* swap */
  34         { 0x0, 0x0a, KEY_REWIND },
  35         { 0x0, 0x1b, KEY_PAUSE },
  36         { 0x0, 0x1f, KEY_FASTFORWARD },
  37         { 0x0, 0x0c, KEY_RECORD },
  38         { 0x0, 0x0d, KEY_CAMERA }, /* screenshot */
  39         { 0x0, 0x0e, KEY_COFFEE }, /* "MTS" */
  40 };
  41
  42 static inline int m9206_read(struct usb_device *udev, u8 request, u16 value, u16 index, void *data, int size)
  43 {
  44         int ret;
  45
  46         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
  47                               request, USB_TYPE_VENDOR | USB_DIR_IN,
  48                               value, index, data, size, 2000);
  49         if (ret < 0)
  50                 return ret;
  51
  52         if (ret != size)
  53                 return -EIO;
  54
  55         return 0;
  56 }
  57
  58 static inline int m9206_write(struct usb_device *udev, u8 request, u16 value, u16 index)
  59 {
  60         int ret;
  61
  62         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  63                               request, USB_TYPE_VENDOR | USB_DIR_OUT,
  64                               value, index, NULL, 0, 2000);
  65         return ret;
  66 }
  67
  68 static int m9206_rc_init(struct usb_device *udev)
  69 {
  70         int ret = 0;
  71
  72         /* Remote controller init. */
  73         if ((ret = m9206_write(udev, M9206_CORE, 0xa8, M9206_RC_INIT2)) != 0)
  74                 return ret;
  75
  76         if ((ret = m9206_write(udev, M9206_CORE, 0x51, M9206_RC_INIT1)) != 0)
  77                 return ret;
  78
  79         return ret;
  80 }
  81
  82 static int m9206_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
  83 {
  84         struct m9206_state *m = d->priv;
  85         int i, ret = 0;
  86         u8 rc_state[2];
  87
  88
  89         if ((ret = m9206_read(d->udev, M9206_CORE, 0x0, M9206_RC_STATE, rc_state, 1)) != 0)
  90                 goto unlock;
  91
  92         if ((ret = m9206_read(d->udev, M9206_CORE, 0x0, M9206_RC_KEY, rc_state + 1, 1)) != 0)
  93                 goto unlock;
  94
  95         for (i = 0; i < ARRAY_SIZE(megasky_rc_keys); i++)
  96                 if (megasky_rc_keys[i].data == rc_state[1]) {
  97                         *event = megasky_rc_keys[i].event;
  98
  99                         switch(rc_state[0]) {
 100                         case 0x80:
 101                                 *state = REMOTE_NO_KEY_PRESSED;
 102                                 goto unlock;
 103
 104                         case 0x93:
 105                         case 0x92:
 106                                 m->rep_count = 0;
 107                                 *state = REMOTE_KEY_PRESSED;
 108                                 goto unlock;
 109
 110                         case 0x91:
 111                                 /* For comfort. */
 112                                 if (++m->rep_count > 2)
 113                                         *state = REMOTE_KEY_REPEAT;
 114                                 goto unlock;
 115
 116                         default:
 117                                 deb_rc("Unexpected rc response %x\n", rc_state[0]);
 118                                 *state = REMOTE_NO_KEY_PRESSED;
 119                                 goto unlock;
 120                         }
 121                 }
 122
 123         if (rc_state[1] != 0)
 124                 deb_rc("Unknown rc key %x\n", rc_state[1]);
 125
 126         *state = REMOTE_NO_KEY_PRESSED;
 127
 128         unlock:
 129
 130         return ret;
 131 }
 132
 133 /* I2C */
 134 static int m9206_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int num)
 135 {
 136         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 137         int i;
 138         int ret = 0;
 139
 140         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 141                 return -EAGAIN;
 142
 143         if (num > 2)
 144                 return -EINVAL;
 145
 146         for (i = 0; i < num; i++) {
 147                 u8 w_len;
 148
 149                 if ((ret = m9206_write(d->udev, M9206_I2C, msg[i].addr, 0x80)) != 0)
 150                         goto unlock;
 151
 152                 if ((ret = m9206_write(d->udev, M9206_I2C, msg[i].buf[0], 0x0)) != 0)
 153                         goto unlock;
 154
 155                 if (i + 1 < num && msg[i + 1].flags & I2C_M_RD) {
 156                         /* Possibly device dependant */
 157                         if (msg[i].addr == d->adapter[0].pll_addr)
 158                                 w_len = 0xc5;
 159                         else
 160                                 w_len = 0x1f;
 161
 162                         if ((ret = m9206_write(d->udev, M9206_I2C, w_len, 0x80)) != 0)
 163                                 goto unlock;
 164
 165                         if ((ret = m9206_read(d->udev, M9206_I2C, 0x0, 0x60, msg[i + 1].buf, msg[i + 1].len)) != 0)
 166                                 goto unlock;
 167
 168                         i++;
 169                 } else {
 170                         if (msg[i].len != 2)
 171                                 return -EINVAL;
 172
 173                         if ((ret = m9206_write(d->udev, M9206_I2C, msg[i].buf[1], 0x40)) != 0)
 174                                 goto unlock;
 175                 }
 176         }
 177         ret = i;
 178         unlock:
 179         mutex_unlock(&d->i2c_mutex);
 180
 181         return ret;
 182 }
 183
 184 static u32 m9206_i2c_func(struct i2c_adapter *adapter)
 185 {
 186         return I2C_FUNC_I2C;
 187 }
 188
 189 static struct i2c_algorithm m9206_i2c_algo = {
 190         .master_xfer   = m9206_i2c_xfer,
 191         .functionality = m9206_i2c_func,
 192 };
 193
 194 /* Callbacks for DVB USB */
 195 static int megasky_identify_state(struct usb_device *udev,
 196                                   struct dvb_usb_device_properties *props,
 197                                   struct dvb_usb_device_description **desc,
 198                                   int *cold)
 199 {
 200         struct usb_host_interface *alt;
 201
 202         alt = usb_altnum_to_altsetting(usb_ifnum_to_if(udev, 0), 1);
 203         *cold = (alt == NULL) ? 1 : 0;
 204
 205         return 0;
 206 }
 207
 208 static int megasky_mt352_demod_init(struct dvb_frontend *fe)
 209 {
 210         u8 config[] = { CONFIG, 0x3d };
 211         u8 clock[] = { CLOCK_CTL, 0x30 };
 212         u8 reset[] = { RESET, 0x80 };
 213         u8 adc_ctl[] = { ADC_CTL_1, 0x40 };
 214         u8 agc[] = { AGC_TARGET, 0x1c, 0x20 };
 215         u8 sec_agc[] = { 0x69, 0x00, 0xff, 0xff, 0x40, 0xff, 0x00, 0x40, 0x40 };
 216         u8 unk1[] = { 0x93, 0x1a };
 217         u8 unk2[] = { 0xb5, 0x7a };
 218
 219         mt352_write(fe, config, ARRAY_SIZE(config));
 220         mt352_write(fe, clock, ARRAY_SIZE(clock));
 221         mt352_write(fe, reset, ARRAY_SIZE(reset));
 222         mt352_write(fe, adc_ctl, ARRAY_SIZE(adc_ctl));
 223         mt352_write(fe, agc, ARRAY_SIZE(agc));
 224         mt352_write(fe, sec_agc, ARRAY_SIZE(sec_agc));
 225         mt352_write(fe, unk1, ARRAY_SIZE(unk1));
 226         mt352_write(fe, unk2, ARRAY_SIZE(unk2));
 227
 228         deb_rc("Demod init!\n");
 229
 230         return 0;
 231 }
 232
 233 static struct mt352_config megasky_mt352_config = {
 234         .demod_address = 0x1e,
 235         .no_tuner = 1,
 236         .demod_init = megasky_mt352_demod_init,
 237 };
 238
 239 static int megasky_frontend_attach(struct dvb_usb_adapter *adap)
 240 {
 241         deb_rc("megasky_frontend_attach!\n");
 242
 243         if ((adap->fe = dvb_attach(mt352_attach, &megasky_mt352_config, &adap->dev->i2c_adap)) != NULL)
 244                 return 0;
 245         return -EIO;
 246 }
 247
 248 static int m9206_set_filter(struct dvb_usb_adapter *adap, int type, int idx, int pid)
 249 {
 250         int ret = 0;
 251
 252         if (pid >= 0x8000)
 253                 return -EINVAL;
 254
 255         pid |= 0x8000;
 256
 257         if ((ret = m9206_write(adap->dev->udev, M9206_FILTER, pid, (type << 8) | (idx * 4) )) != 0)
 258                 return ret;
 259
 260         if ((ret = m9206_write(adap->dev->udev, M9206_FILTER, 0, (type << 8) | (idx * 4) )) != 0)
 261                 return ret;
 262
 263         return ret;
 264 }
 265
 266 static int m9206_update_filters(struct dvb_usb_adapter *adap)
 267 {
 268         struct m9206_state *m = adap->dev->priv;
 269         int enabled = m->filtering_enabled;
 270         int i, ret = 0, filter = 0;
 271
 272         for (i = 0; i < M9206_MAX_FILTERS; i++)
 273                 if (m->filters[i] == 8192)
 274                         enabled = 0;
 275
 276         /* Disable all filters */
 277         if ((ret = m9206_set_filter(adap, 0x81, 1, enabled)) != 0)
 278                 return ret;
 279
 280         for (i = 0; i < M9206_MAX_FILTERS; i++)
 281                 if ((ret = m9206_set_filter(adap, 0x81, i + 2, 0)) != 0)
 282                         return ret;
 283
 284         if ((ret = m9206_set_filter(adap, 0x82, 0, 0x0)) != 0)
 285                 return ret;
 286
 287         /* Set */
 288         if (enabled) {
 289                 for (i = 0; i < M9206_MAX_FILTERS; i++) {
 290                         if (m->filters[i] == 0)
 291                                 continue;
 292
 293                         if ((ret = m9206_set_filter(adap, 0x81, filter + 2, m->filters[i])) != 0)
 294                                 return ret;
 295
 296                         filter++;
 297                 }
 298         }
 299
 300         if ((ret = m9206_set_filter(adap, 0x82, 0, 0x02f5)) != 0)
 301                 return ret;
 302
 303         return ret;
 304 }
 305
 306 static int m9206_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
 307 {
 308         struct m9206_state *m = adap->dev->priv;
 309
 310         m->filtering_enabled = onoff ? 1 : 0;
 311
 312         return m9206_update_filters(adap);
 313 }
 314
 315 static int m9206_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff)
 316 {
 317         struct m9206_state *m = adap->dev->priv;
 318
 319         m->filters[index] = onoff ? pid : 0;
 320
 321         return m9206_update_filters(adap);
 322 }
 323
 324 static int m9206_firmware_download(struct usb_device *udev, const struct firmware *fw)
 325 {
 326         u16 value, index, size;
 327         u8 read[4], *buff;
 328         int i, pass, ret = 0;
 329
 330         buff = kmalloc(65536, GFP_KERNEL);
 331
 332         if ((ret = m9206_read(udev, M9206_FILTER, 0x0, 0x8000, read, 4)) != 0)
 333                 goto done;
 334         deb_rc("%x %x %x %x\n", read[0], read[1], read[2], read[3]);
 335
 336         if ((ret = m9206_read(udev, M9206_FW, 0x0, 0x0, read, 1)) != 0)
 337                 goto done;
 338         deb_rc("%x\n", read[0]);
 339
 340         for (pass = 0; pass < 2; pass++) {
 341                 for (i = 0; i + (sizeof(u16) * 3) < fw->size;) {
 342                         value = le16_to_cpu(*(u16 *)(fw->data + i));
 343                         i += sizeof(u16);
 344
 345                         index = le16_to_cpu(*(u16 *)(fw->data + i));
 346                         i += sizeof(u16);
 347
 348                         size = le16_to_cpu(*(u16 *)(fw->data + i));
 349                         i += sizeof(u16);
 350
 351                         if (pass == 1) {
 352                                 /* Will stall if using fw->data ... */
 353                                 memcpy(buff, fw->data + i, size);
 354
 355                                 ret = usb_control_msg(udev, usb_sndctrlpipe(udev,0),
 356                                             M9206_FW,
 357                                             USB_TYPE_VENDOR | USB_DIR_OUT,
 358                                             value, index, buff, size, 20);
 359                                 if (ret != size) {
 360                                         deb_rc("error while uploading fw!\n");
 361                                         ret = -EIO;
 362                                         goto done;
 363                                 }
 364                                 msleep(3);
 365                         }
 366                         i += size;
 367                 }
 368                 if (i != fw->size) {
 369                         ret = -EINVAL;
 370                         goto done;
 371                 }
 372         }
 373
 374         msleep(36);
 375
 376         /* m9206 will disconnect itself from the bus after this. */
 377         (void) m9206_write(udev, M9206_CORE, 0x01, M9206_FW_GO);
 378         deb_rc("firmware uploaded!\n");
 379
 380         done:
 381         kfree(buff);
 382
 383         return ret;
 384 }
 385
 386 /* DVB USB Driver stuff */
 387 static struct dvb_usb_device_properties megasky_properties;
 388
 389 static int m920x_probe(struct usb_interface *intf, const struct usb_device_id *id)
 390 {
 391         struct dvb_usb_device *d;
 392         struct usb_host_interface *alt;
 393         int ret;
 394
 395         if ((ret = dvb_usb_device_init(intf, &megasky_properties, THIS_MODULE, &d)) == 0) {
 396                 deb_rc("probed!\n");
 397
 398                 alt = usb_altnum_to_altsetting(intf, 1);
 399                 if (alt == NULL) {
 400                         deb_rc("not alt found!\n");
 401                         return -ENODEV;
 402                 }
 403
 404                 ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber, alt->desc.bAlternateSetting);
 405                 if (ret < 0)
 406                         return ret;
 407
 408                 deb_rc("Changed to alternate setting!\n");
 409
 410                 if ((ret = m9206_rc_init(d->udev)) != 0)
 411                         return ret;
 412         }
 413         return ret;
 414 }
 415
 416 static struct usb_device_id m920x_table [] = {
 417                 { USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580) },
 418                 { }             /* Terminating entry */
 419 };
 420 MODULE_DEVICE_TABLE (usb, m920x_table);
 421
 422 static struct dvb_usb_device_properties megasky_properties = {
 423         .usb_ctrl = DEVICE_SPECIFIC,
 424         .firmware = "dvb-usb-megasky-02.fw",
 425         .download_firmware = m9206_firmware_download,
 426
 427         .rc_interval      = 100,
 428         .rc_key_map       = megasky_rc_keys,
 429         .rc_key_map_size  = ARRAY_SIZE(megasky_rc_keys),
 430         .rc_query         = m9206_rc_query,
 431
 432         .size_of_priv     = sizeof(struct m9206_state),
 433
 434         .identify_state   = megasky_identify_state,
 435         .num_adapters = 1,
 436         .adapter = {{
 437                 .caps = DVB_USB_IS_AN_I2C_ADAPTER | DVB_USB_ADAP_HAS_PID_FILTER |
 438                         DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
 439
 440                 .pid_filter_count = 8,
 441                 .pid_filter       = m9206_pid_filter,
 442                 .pid_filter_ctrl  = m9206_pid_filter_ctrl,
 443
 444                 .frontend_attach  = megasky_frontend_attach,
 445                 .tuner_attach     = qt1010_tuner_attach,
 446
 447                 .stream = {
 448                         .type = USB_BULK,
 449                         .count = 8,
 450                         .endpoint = 0x81,
 451                         .u = {
 452                                 .bulk = {
 453                                         .buffersize = 512,
 454                                 }
 455                         }
 456                 },
 457         }},
 458         .i2c_algo         = &m9206_i2c_algo,
 459
 460         .num_device_descs = 1,
 461         .devices = {
 462                 {   "MSI Mega Sky 580 DVB-T USB2.0",
 463                         { &m920x_table[0], NULL },
 464                         { NULL },
 465                 },
 466         }
 467 };
 468
 469 static struct usb_driver m920x_driver = {
 470         .name           = "dvb_usb_m920x",
 471         .probe          = m920x_probe,
 472         .disconnect     = dvb_usb_device_exit,
 473         .id_table       = m920x_table,
 474 };
 475
 476 /* module stuff */
 477 static int __init m920x_module_init(void)
 478 {
 479         int ret;
 480
 481         if ((ret = usb_register(&m920x_driver))) {
 482                 err("usb_register failed. Error number %d", ret);
 483                 return ret;
 484         }
 485
 486         return 0;
 487 }
 488
 489 static void __exit m920x_module_exit(void)
 490 {
 491         /* deregister this driver from the USB subsystem */
 492         usb_deregister(&m920x_driver);
 493 }
 494
 495 module_init (m920x_module_init);
 496 module_exit (m920x_module_exit);
 497
 498 MODULE_AUTHOR("Aapo Tahkola <aet@rasterburn.org>");
 499 MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / Uli m920x");
 500 MODULE_VERSION("0.1");
 501 MODULE_LICENSE("GPL");