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 #define deb_rc(args...)   dprintk(dvb_usb_digitv_debug,0x01,args)
  24
  25 static int digitv_ctrl_msg(struct dvb_usb_device *d,
  26                 u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
  27 {
  28         int wo = (rbuf == NULL || rlen == 0); /* write-only */
  29         u8 sndbuf[7],rcvbuf[7];
  30         memset(sndbuf,0,7); memset(rcvbuf,0,7);
  31
  32         sndbuf[0] = cmd;
  33         sndbuf[1] = vv;
  34         sndbuf[2] = wo ? wlen : rlen;
  35
  36         if (wo) {
  37                 memcpy(&sndbuf[3],wbuf,wlen);
  38                 dvb_usb_generic_write(d,sndbuf,7);
  39         } else {
  40                 dvb_usb_generic_rw(d,sndbuf,7,rcvbuf,7,10);
  41                 memcpy(rbuf,&rcvbuf[3],rlen);
  42         }
  43         return 0;
  44 }
  45
  46 /* I2C */
  47 static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
  48 {
  49         struct dvb_usb_device *d = i2c_get_adapdata(adap);
  50         int i;
  51
  52         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
  53                 return -EAGAIN;
  54
  55         if (num > 2)
  56                 warn("more than 2 i2c messages at a time is not handled yet. TODO.");
  57
  58         for (i = 0; i < num; i++) {
  59                 /* write/read request */
  60                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
  61                         if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,
  62                                                 msg[i+1].buf,msg[i+1].len) < 0)
  63                                 break;
  64                         i++;
  65                 } else
  66                         if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],
  67                                                 &msg[i].buf[1],msg[i].len-1,NULL,0) < 0)
  68                                 break;
  69         }
  70
  71         mutex_unlock(&d->i2c_mutex);
  72         return i;
  73 }
  74
  75 static u32 digitv_i2c_func(struct i2c_adapter *adapter)
  76 {
  77         return I2C_FUNC_I2C;
  78 }
  79
  80 static struct i2c_algorithm digitv_i2c_algo = {
  81         .master_xfer   = digitv_i2c_xfer,
  82         .functionality = digitv_i2c_func,
  83 };
  84
  85 /* Callbacks for DVB USB */
  86 static int digitv_identify_state (struct usb_device *udev, struct
  87                 dvb_usb_device_properties *props, struct dvb_usb_device_description **desc,
  88                 int *cold)
  89 {
  90         *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
  91         return 0;
  92 }
  93
  94 static int digitv_mt352_demod_init(struct dvb_frontend *fe)
  95 {
  96         static u8 reset_buf[] = { 0x89, 0x38,  0x8a, 0x2d, 0x50, 0x80 };
  97         static u8 init_buf[] = { 0x68, 0xa0,  0x8e, 0x40,  0x53, 0x50,
  98                         0x67, 0x20,  0x7d, 0x01,  0x7c, 0x00,  0x7a, 0x00,
  99                         0x79, 0x20,  0x57, 0x05,  0x56, 0x31,  0x88, 0x0f,
 100                         0x75, 0x32 };
 101         int i;
 102
 103         for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)
 104                 mt352_write(fe, &reset_buf[i], 2);
 105
 106         msleep(1);
 107
 108         for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)
 109                 mt352_write(fe, &init_buf[i], 2);
 110
 111         return 0;
 112 }
 113
 114 static struct mt352_config digitv_mt352_config = {
 115         .demod_init = digitv_mt352_demod_init,
 116 };
 117
 118 static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
 119 {
 120         struct dvb_usb_adapter *adap = fe->dvb->priv;
 121         u8 b[5];
 122
 123         fe->ops.tuner_ops.calc_regs(fe, fep, b, sizeof(b));
 124         if (fe->ops.i2c_gate_ctrl)
 125                 fe->ops.i2c_gate_ctrl(fe, 1);
 126         return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0);
 127 }
 128
 129 static struct nxt6000_config digitv_nxt6000_config = {
 130         .clock_inversion = 1,
 131 };
 132
 133 static int digitv_frontend_attach(struct dvb_usb_adapter *adap)
 134 {
 135         struct digitv_state *st = adap->dev->priv;
 136
 137         if ((adap->fe = dvb_attach(mt352_attach, &digitv_mt352_config, &adap->dev->i2c_adap)) != NULL) {
 138                 st->is_nxt6000 = 0;
 139                 return 0;
 140         }
 141         if ((adap->fe = dvb_attach(nxt6000_attach, &digitv_nxt6000_config, &adap->dev->i2c_adap)) != NULL) {
 142                 st->is_nxt6000 = 1;
 143                 return 0;
 144         }
 145         return -EIO;
 146 }
 147
 148 static int digitv_tuner_attach(struct dvb_usb_adapter *adap)
 149 {
 150         struct digitv_state *st = adap->dev->priv;
 151
 152         if (!dvb_attach(dvb_pll_attach, adap->fe, 0x60, NULL, DVB_PLL_TDED4))
 153                 return -ENODEV;
 154
 155         if (st->is_nxt6000)
 156                 adap->fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params;
 157
 158         return 0;
 159 }
 160
 161 static struct dvb_usb_rc_key digitv_rc_keys[] = {
 162         { 0x5f, 0x55, KEY_0 },
 163         { 0x6f, 0x55, KEY_1 },
 164         { 0x9f, 0x55, KEY_2 },
 165         { 0xaf, 0x55, KEY_3 },
 166         { 0x5f, 0x56, KEY_4 },
 167         { 0x6f, 0x56, KEY_5 },
 168         { 0x9f, 0x56, KEY_6 },
 169         { 0xaf, 0x56, KEY_7 },
 170         { 0x5f, 0x59, KEY_8 },
 171         { 0x6f, 0x59, KEY_9 },
 172         { 0x9f, 0x59, KEY_TV },
 173         { 0xaf, 0x59, KEY_AUX },
 174         { 0x5f, 0x5a, KEY_DVD },
 175         { 0x6f, 0x5a, KEY_POWER },
 176         { 0x9f, 0x5a, KEY_MHP },     /* labelled 'Picture' */
 177         { 0xaf, 0x5a, KEY_AUDIO },
 178         { 0x5f, 0x65, KEY_INFO },
 179         { 0x6f, 0x65, KEY_F13 },     /* 16:9 */
 180         { 0x9f, 0x65, KEY_F14 },     /* 14:9 */
 181         { 0xaf, 0x65, KEY_EPG },
 182         { 0x5f, 0x66, KEY_EXIT },
 183         { 0x6f, 0x66, KEY_MENU },
 184         { 0x9f, 0x66, KEY_UP },
 185         { 0xaf, 0x66, KEY_DOWN },
 186         { 0x5f, 0x69, KEY_LEFT },
 187         { 0x6f, 0x69, KEY_RIGHT },
 188         { 0x9f, 0x69, KEY_ENTER },
 189         { 0xaf, 0x69, KEY_CHANNELUP },
 190         { 0x5f, 0x6a, KEY_CHANNELDOWN },
 191         { 0x6f, 0x6a, KEY_VOLUMEUP },
 192         { 0x9f, 0x6a, KEY_VOLUMEDOWN },
 193         { 0xaf, 0x6a, KEY_RED },
 194         { 0x5f, 0x95, KEY_GREEN },
 195         { 0x6f, 0x95, KEY_YELLOW },
 196         { 0x9f, 0x95, KEY_BLUE },
 197         { 0xaf, 0x95, KEY_SUBTITLE },
 198         { 0x5f, 0x96, KEY_F15 },     /* AD */
 199         { 0x6f, 0x96, KEY_TEXT },
 200         { 0x9f, 0x96, KEY_MUTE },
 201         { 0xaf, 0x96, KEY_REWIND },
 202         { 0x5f, 0x99, KEY_STOP },
 203         { 0x6f, 0x99, KEY_PLAY },
 204         { 0x9f, 0x99, KEY_FASTFORWARD },
 205         { 0xaf, 0x99, KEY_F16 },     /* chapter */
 206         { 0x5f, 0x9a, KEY_PAUSE },
 207         { 0x6f, 0x9a, KEY_PLAY },
 208         { 0x9f, 0x9a, KEY_RECORD },
 209         { 0xaf, 0x9a, KEY_F17 },     /* picture in picture */
 210         { 0x5f, 0xa5, KEY_KPPLUS },  /* zoom in */
 211         { 0x6f, 0xa5, KEY_KPMINUS }, /* zoom out */
 212         { 0x9f, 0xa5, KEY_F18 },     /* capture */
 213         { 0xaf, 0xa5, KEY_F19 },     /* web */
 214         { 0x5f, 0xa6, KEY_EMAIL },
 215         { 0x6f, 0xa6, KEY_PHONE },
 216         { 0x9f, 0xa6, KEY_PC },
 217 };
 218
 219 static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 220 {
 221         int i;
 222         u8 key[5];
 223         u8 b[4] = { 0 };
 224
 225         *event = 0;
 226         *state = REMOTE_NO_KEY_PRESSED;
 227
 228         digitv_ctrl_msg(d,USB_READ_REMOTE,0,NULL,0,&key[1],4);
 229
 230         /* Tell the device we've read the remote. Not sure how necessary
 231            this is, but the Nebula SDK does it. */
 232         digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
 233
 234         /* if something is inside the buffer, simulate key press */
 235         if (key[1] != 0)
 236         {
 237                   for (i = 0; i < d->props.rc_key_map_size; i++) {
 238                         if (d->props.rc_key_map[i].custom == key[1] &&
 239                             d->props.rc_key_map[i].data == key[2]) {
 240                                 *event = d->props.rc_key_map[i].event;
 241                                 *state = REMOTE_KEY_PRESSED;
 242                                 return 0;
 243                         }
 244                 }
 245         }
 246
 247         if (key[0] != 0)
 248                 deb_rc("key: %x %x %x %x %x\n",key[0],key[1],key[2],key[3],key[4]);
 249         return 0;
 250 }
 251
 252 /* DVB USB Driver stuff */
 253 static struct dvb_usb_device_properties digitv_properties;
 254
 255 static int digitv_probe(struct usb_interface *intf,
 256                 const struct usb_device_id *id)
 257 {
 258         struct dvb_usb_device *d;
 259         int ret;
 260         if ((ret = dvb_usb_device_init(intf,&digitv_properties,THIS_MODULE,&d)) == 0) {
 261                 u8 b[4] = { 0 };
 262
 263                 if (d != NULL) { /* do that only when the firmware is loaded */
 264                         b[0] = 1;
 265                         digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0);
 266
 267                         b[0] = 0;
 268                         digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
 269                 }
 270         }
 271         return ret;
 272 }
 273
 274 static struct usb_device_id digitv_table [] = {
 275                 { USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
 276                 { }             /* Terminating entry */
 277 };
 278 MODULE_DEVICE_TABLE (usb, digitv_table);
 279
 280 static struct dvb_usb_device_properties digitv_properties = {
 281         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 282
 283         .usb_ctrl = CYPRESS_FX2,
 284         .firmware = "dvb-usb-digitv-02.fw",
 285
 286         .size_of_priv = sizeof(struct digitv_state),
 287
 288         .num_adapters = 1,
 289         .adapter = {
 290                 {
 291                         .frontend_attach  = digitv_frontend_attach,
 292                         .tuner_attach     = digitv_tuner_attach,
 293
 294                         /* parameter for the MPEG2-data transfer */
 295                         .stream = {
 296                                 .type = USB_BULK,
 297                                 .count = 7,
 298                                 .endpoint = 0x02,
 299                                 .u = {
 300                                         .bulk = {
 301                                                 .buffersize = 4096,
 302                                         }
 303                                 }
 304                         },
 305                 }
 306         },
 307         .identify_state   = digitv_identify_state,
 308
 309         .rc_interval      = 1000,
 310         .rc_key_map       = digitv_rc_keys,
 311         .rc_key_map_size  = ARRAY_SIZE(digitv_rc_keys),
 312         .rc_query         = digitv_rc_query,
 313
 314         .i2c_algo         = &digitv_i2c_algo,
 315
 316         .generic_bulk_ctrl_endpoint = 0x01,
 317
 318         .num_device_descs = 1,
 319         .devices = {
 320                 {   "Nebula Electronics uDigiTV DVB-T USB2.0)",
 321                         { &digitv_table[0], NULL },
 322                         { NULL },
 323                 },
 324                 { NULL },
 325         }
 326 };
 327
 328 static struct usb_driver digitv_driver = {
 329         .name           = "dvb_usb_digitv",
 330         .probe          = digitv_probe,
 331         .disconnect = dvb_usb_device_exit,
 332         .id_table       = digitv_table,
 333 };
 334
 335 /* module stuff */
 336 static int __init digitv_module_init(void)
 337 {
 338         int result;
 339         if ((result = usb_register(&digitv_driver))) {
 340                 err("usb_register failed. Error number %d",result);
 341                 return result;
 342         }
 343
 344         return 0;
 345 }
 346
 347 static void __exit digitv_module_exit(void)
 348 {
 349         /* deregister this driver from the USB subsystem */
 350         usb_deregister(&digitv_driver);
 351 }
 352
 353 module_init (digitv_module_init);
 354 module_exit (digitv_module_exit);
 355
 356 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
 357 MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
 358 MODULE_VERSION("1.0-alpha");
 359 MODULE_LICENSE("GPL");