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

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