drivers/media/usb/dvb-usb/dibusb-common.c

   1 /* Common methods for dibusb-based-receivers.
   2  *
   3  * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
   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/media/dvb-drivers/dvb-usb.rst for more information
  10  */
  11
  12 #include "dibusb.h"
  13
  14 /* Max transfer size done by I2C transfer functions */
  15 #define MAX_XFER_SIZE  64
  16
  17 static int debug;
  18 module_param(debug, int, 0644);
  19 MODULE_PARM_DESC(debug, "set debugging level (1=info (|-able))." DVB_USB_DEBUG_STATUS);
  20 MODULE_LICENSE("GPL");
  21
  22 #define deb_info(args...) dprintk(debug,0x01,args)
  23
  24 /* common stuff used by the different dibusb modules */
  25 int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
  26 {
  27         if (adap->priv != NULL) {
  28                 struct dibusb_state *st = adap->priv;
  29                 if (st->ops.fifo_ctrl != NULL)
  30                         if (st->ops.fifo_ctrl(adap->fe_adap[0].fe, onoff)) {
  31                                 err("error while controlling the fifo of the demod.");
  32                                 return -ENODEV;
  33                         }
  34         }
  35         return 0;
  36 }
  37 EXPORT_SYMBOL(dibusb_streaming_ctrl);
  38
  39 int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff)
  40 {
  41         if (adap->priv != NULL) {
  42                 struct dibusb_state *st = adap->priv;
  43                 if (st->ops.pid_ctrl != NULL)
  44                         st->ops.pid_ctrl(adap->fe_adap[0].fe,
  45                                          index, pid, onoff);
  46         }
  47         return 0;
  48 }
  49 EXPORT_SYMBOL(dibusb_pid_filter);
  50
  51 int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
  52 {
  53         if (adap->priv != NULL) {
  54                 struct dibusb_state *st = adap->priv;
  55                 if (st->ops.pid_parse != NULL)
  56                         if (st->ops.pid_parse(adap->fe_adap[0].fe, onoff) < 0)
  57                                 err("could not handle pid_parser");
  58         }
  59         return 0;
  60 }
  61 EXPORT_SYMBOL(dibusb_pid_filter_ctrl);
  62
  63 int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff)
  64 {
  65         u8 *b;
  66         int ret;
  67
  68         b = kmalloc(3, GFP_KERNEL);
  69         if (!b)
  70                 return -ENOMEM;
  71
  72         b[0] = DIBUSB_REQ_SET_IOCTL;
  73         b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
  74         b[2] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP;
  75
  76         ret = dvb_usb_generic_write(d, b, 3);
  77
  78         kfree(b);
  79
  80         msleep(10);
  81
  82         return ret;
  83 }
  84 EXPORT_SYMBOL(dibusb_power_ctrl);
  85
  86 int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
  87 {
  88         int ret;
  89         u8 *b;
  90
  91         b = kmalloc(3, GFP_KERNEL);
  92         if (!b)
  93                 return -ENOMEM;
  94
  95         if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0)
  96                 goto ret;
  97
  98         if (onoff) {
  99                 b[0] = DIBUSB_REQ_SET_STREAMING_MODE;
 100                 b[1] = 0x00;
 101                 ret = dvb_usb_generic_write(adap->dev, b, 2);
 102                 if (ret  < 0)
 103                         goto ret;
 104         }
 105
 106         b[0] = DIBUSB_REQ_SET_IOCTL;
 107         b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
 108         ret = dvb_usb_generic_write(adap->dev, b, 3);
 109
 110 ret:
 111         kfree(b);
 112         return ret;
 113 }
 114 EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);
 115
 116 int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff)
 117 {
 118         u8 *b;
 119         int ret;
 120
 121         if (!onoff)
 122                 return 0;
 123
 124         b = kmalloc(3, GFP_KERNEL);
 125         if (!b)
 126                 return -ENOMEM;
 127
 128         b[0] = DIBUSB_REQ_SET_IOCTL;
 129         b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;
 130         b[2] = DIBUSB_IOCTL_POWER_WAKEUP;
 131
 132         ret = dvb_usb_generic_write(d, b, 3);
 133
 134         kfree(b);
 135
 136         return ret;
 137 }
 138 EXPORT_SYMBOL(dibusb2_0_power_ctrl);
 139
 140 static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr,
 141                           u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
 142 {
 143         u8 *sndbuf;
 144         int ret, wo, len;
 145
 146         /* write only ? */
 147         wo = (rbuf == NULL || rlen == 0);
 148
 149         len = 2 + wlen + (wo ? 0 : 2);
 150
 151         sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL);
 152         if (!sndbuf)
 153                 return -ENOMEM;
 154
 155         if (4 + wlen > MAX_XFER_SIZE) {
 156                 warn("i2c wr: len=%d is too big!\n", wlen);
 157                 ret = -EOPNOTSUPP;
 158                 goto ret;
 159         }
 160
 161         sndbuf[0] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ;
 162         sndbuf[1] = (addr << 1) | (wo ? 0 : 1);
 163
 164         memcpy(&sndbuf[2], wbuf, wlen);
 165
 166         if (!wo) {
 167                 sndbuf[wlen + 2] = (rlen >> 8) & 0xff;
 168                 sndbuf[wlen + 3] = rlen & 0xff;
 169         }
 170
 171         ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0);
 172
 173 ret:
 174         kfree(sndbuf);
 175         return ret;
 176 }
 177
 178 /*
 179  * I2C master xfer function
 180  */
 181 static int dibusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
 182 {
 183         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 184         int i;
 185
 186         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 187                 return -EAGAIN;
 188
 189         for (i = 0; i < num; i++) {
 190                 /* write/read request */
 191                 if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0
 192                                           && (msg[i+1].flags & I2C_M_RD)) {
 193                         if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,
 194                                                 msg[i+1].buf,msg[i+1].len) < 0)
 195                                 break;
 196                         i++;
 197                 } else if ((msg[i].flags & I2C_M_RD) == 0) {
 198                         if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0) < 0)
 199                                 break;
 200                 } else if (msg[i].addr != 0x50) {
 201                         /* 0x50 is the address of the eeprom - we need to protect it
 202                          * from dibusb's bad i2c implementation: reads without
 203                          * writing the offset before are forbidden */
 204                         if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0, msg[i].buf, msg[i].len) < 0)
 205                                 break;
 206                 }
 207         }
 208
 209         mutex_unlock(&d->i2c_mutex);
 210         return i;
 211 }
 212
 213 static u32 dibusb_i2c_func(struct i2c_adapter *adapter)
 214 {
 215         return I2C_FUNC_I2C;
 216 }
 217
 218 struct i2c_algorithm dibusb_i2c_algo = {
 219         .master_xfer   = dibusb_i2c_xfer,
 220         .functionality = dibusb_i2c_func,
 221 };
 222 EXPORT_SYMBOL(dibusb_i2c_algo);
 223
 224 int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val)
 225 {
 226         u8 *buf;
 227         int rc;
 228
 229         buf = kmalloc(2, GFP_KERNEL);
 230         if (!buf)
 231                 return -ENOMEM;
 232
 233         buf[0] = offs;
 234
 235         rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1);
 236         *val = buf[1];
 237         kfree(buf);
 238
 239         return rc;
 240 }
 241 EXPORT_SYMBOL(dibusb_read_eeprom_byte);
 242
 243 /*
 244  * common remote control stuff
 245  */
 246 struct rc_map_table rc_map_dibusb_table[] = {
 247         /* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */
 248         { 0x0016, KEY_POWER },
 249         { 0x0010, KEY_MUTE },
 250         { 0x0003, KEY_1 },
 251         { 0x0001, KEY_2 },
 252         { 0x0006, KEY_3 },
 253         { 0x0009, KEY_4 },
 254         { 0x001d, KEY_5 },
 255         { 0x001f, KEY_6 },
 256         { 0x000d, KEY_7 },
 257         { 0x0019, KEY_8 },
 258         { 0x001b, KEY_9 },
 259         { 0x0015, KEY_0 },
 260         { 0x0005, KEY_CHANNELUP },
 261         { 0x0002, KEY_CHANNELDOWN },
 262         { 0x001e, KEY_VOLUMEUP },
 263         { 0x000a, KEY_VOLUMEDOWN },
 264         { 0x0011, KEY_RECORD },
 265         { 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */
 266         { 0x0014, KEY_PLAY },
 267         { 0x001a, KEY_STOP },
 268         { 0x0040, KEY_REWIND },
 269         { 0x0012, KEY_FASTFORWARD },
 270         { 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */
 271         { 0x004c, KEY_PAUSE },
 272         { 0x004d, KEY_SCREEN }, /* Full screen mode. */
 273         { 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */
 274         /* additional keys TwinHan VisionPlus, the Artec seemingly not have */
 275         { 0x000c, KEY_CANCEL }, /* Cancel */
 276         { 0x001c, KEY_EPG }, /* EPG */
 277         { 0x0000, KEY_TAB }, /* Tab */
 278         { 0x0048, KEY_INFO }, /* Preview */
 279         { 0x0004, KEY_LIST }, /* RecordList */
 280         { 0x000f, KEY_TEXT }, /* Teletext */
 281         /* Key codes for the KWorld/ADSTech/JetWay remote. */
 282         { 0x8612, KEY_POWER },
 283         { 0x860f, KEY_SELECT }, /* source */
 284         { 0x860c, KEY_UNKNOWN }, /* scan */
 285         { 0x860b, KEY_EPG },
 286         { 0x8610, KEY_MUTE },
 287         { 0x8601, KEY_1 },
 288         { 0x8602, KEY_2 },
 289         { 0x8603, KEY_3 },
 290         { 0x8604, KEY_4 },
 291         { 0x8605, KEY_5 },
 292         { 0x8606, KEY_6 },
 293         { 0x8607, KEY_7 },
 294         { 0x8608, KEY_8 },
 295         { 0x8609, KEY_9 },
 296         { 0x860a, KEY_0 },
 297         { 0x8618, KEY_ZOOM },
 298         { 0x861c, KEY_UNKNOWN }, /* preview */
 299         { 0x8613, KEY_UNKNOWN }, /* snap */
 300         { 0x8600, KEY_UNDO },
 301         { 0x861d, KEY_RECORD },
 302         { 0x860d, KEY_STOP },
 303         { 0x860e, KEY_PAUSE },
 304         { 0x8616, KEY_PLAY },
 305         { 0x8611, KEY_BACK },
 306         { 0x8619, KEY_FORWARD },
 307         { 0x8614, KEY_UNKNOWN }, /* pip */
 308         { 0x8615, KEY_ESC },
 309         { 0x861a, KEY_UP },
 310         { 0x861e, KEY_DOWN },
 311         { 0x861f, KEY_LEFT },
 312         { 0x861b, KEY_RIGHT },
 313
 314         /* Key codes for the DiBcom MOD3000 remote. */
 315         { 0x8000, KEY_MUTE },
 316         { 0x8001, KEY_TEXT },
 317         { 0x8002, KEY_HOME },
 318         { 0x8003, KEY_POWER },
 319
 320         { 0x8004, KEY_RED },
 321         { 0x8005, KEY_GREEN },
 322         { 0x8006, KEY_YELLOW },
 323         { 0x8007, KEY_BLUE },
 324
 325         { 0x8008, KEY_DVD },
 326         { 0x8009, KEY_AUDIO },
 327         { 0x800a, KEY_IMAGES },      /* Pictures */
 328         { 0x800b, KEY_VIDEO },
 329
 330         { 0x800c, KEY_BACK },
 331         { 0x800d, KEY_UP },
 332         { 0x800e, KEY_RADIO },
 333         { 0x800f, KEY_EPG },
 334
 335         { 0x8010, KEY_LEFT },
 336         { 0x8011, KEY_OK },
 337         { 0x8012, KEY_RIGHT },
 338         { 0x8013, KEY_UNKNOWN },    /* SAP */
 339
 340         { 0x8014, KEY_TV },
 341         { 0x8015, KEY_DOWN },
 342         { 0x8016, KEY_MENU },       /* DVD Menu */
 343         { 0x8017, KEY_LAST },
 344
 345         { 0x8018, KEY_RECORD },
 346         { 0x8019, KEY_STOP },
 347         { 0x801a, KEY_PAUSE },
 348         { 0x801b, KEY_PLAY },
 349
 350         { 0x801c, KEY_PREVIOUS },
 351         { 0x801d, KEY_REWIND },
 352         { 0x801e, KEY_FASTFORWARD },
 353         { 0x801f, KEY_NEXT},
 354
 355         { 0x8040, KEY_1 },
 356         { 0x8041, KEY_2 },
 357         { 0x8042, KEY_3 },
 358         { 0x8043, KEY_CHANNELUP },
 359
 360         { 0x8044, KEY_4 },
 361         { 0x8045, KEY_5 },
 362         { 0x8046, KEY_6 },
 363         { 0x8047, KEY_CHANNELDOWN },
 364
 365         { 0x8048, KEY_7 },
 366         { 0x8049, KEY_8 },
 367         { 0x804a, KEY_9 },
 368         { 0x804b, KEY_VOLUMEUP },
 369
 370         { 0x804c, KEY_CLEAR },
 371         { 0x804d, KEY_0 },
 372         { 0x804e, KEY_ENTER },
 373         { 0x804f, KEY_VOLUMEDOWN },
 374 };
 375 EXPORT_SYMBOL(rc_map_dibusb_table);
 376
 377 int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 378 {
 379         u8 *buf;
 380         int ret;
 381
 382         buf = kmalloc(5, GFP_KERNEL);
 383         if (!buf)
 384                 return -ENOMEM;
 385
 386         buf[0] = DIBUSB_REQ_POLL_REMOTE;
 387
 388         ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0);
 389         if (ret < 0)
 390                 goto ret;
 391
 392         dvb_usb_nec_rc_key_to_event(d, buf, event, state);
 393
 394         if (buf[0] != 0)
 395                 deb_info("key: %*ph\n", 5, buf);
 396
 397 ret:
 398         kfree(buf);
 399
 400         return ret;
 401 }
 402 EXPORT_SYMBOL(dibusb_rc_query);