drivers/media/dvb/firewire/firedtv-dvb.c

   1 /*
   2  * FireDTV driver (formerly known as FireSAT)
   3  *
   4  * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
   5  * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
   6  *
   7  *      This program is free software; you can redistribute it and/or
   8  *      modify it under the terms of the GNU General Public License as
   9  *      published by the Free Software Foundation; either version 2 of
  10  *      the License, or (at your option) any later version.
  11  */
  12
  13 #include <linux/bitops.h>
  14 #include <linux/device.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/mod_devicetable.h>
  18 #include <linux/module.h>
  19 #include <linux/mutex.h>
  20 #include <linux/slab.h>
  21 #include <linux/string.h>
  22 #include <linux/types.h>
  23 #include <linux/wait.h>
  24 #include <linux/workqueue.h>
  25
  26 #include <dmxdev.h>
  27 #include <dvb_demux.h>
  28 #include <dvbdev.h>
  29 #include <dvb_frontend.h>
  30
  31 #include "firedtv.h"
  32
  33 static int alloc_channel(struct firedtv *fdtv)
  34 {
  35         int i;
  36
  37         for (i = 0; i < 16; i++)
  38                 if (!__test_and_set_bit(i, &fdtv->channel_active))
  39                         break;
  40         return i;
  41 }
  42
  43 static void collect_channels(struct firedtv *fdtv, int *pidc, u16 pid[])
  44 {
  45         int i, n;
  46
  47         for (i = 0, n = 0; i < 16; i++)
  48                 if (test_bit(i, &fdtv->channel_active))
  49                         pid[n++] = fdtv->channel_pid[i];
  50         *pidc = n;
  51 }
  52
  53 static inline void dealloc_channel(struct firedtv *fdtv, int i)
  54 {
  55         __clear_bit(i, &fdtv->channel_active);
  56 }
  57
  58 int fdtv_start_feed(struct dvb_demux_feed *dvbdmxfeed)
  59 {
  60         struct firedtv *fdtv = dvbdmxfeed->demux->priv;
  61         int pidc, c, ret;
  62         u16 pids[16];
  63
  64         switch (dvbdmxfeed->type) {
  65         case DMX_TYPE_TS:
  66         case DMX_TYPE_SEC:
  67                 break;
  68         default:
  69                 dev_err(fdtv->device, "can't start dmx feed: invalid type %u\n",
  70                         dvbdmxfeed->type);
  71                 return -EINVAL;
  72         }
  73
  74         if (mutex_lock_interruptible(&fdtv->demux_mutex))
  75                 return -EINTR;
  76
  77         if (dvbdmxfeed->type == DMX_TYPE_TS) {
  78                 switch (dvbdmxfeed->pes_type) {
  79                 case DMX_TS_PES_VIDEO:
  80                 case DMX_TS_PES_AUDIO:
  81                 case DMX_TS_PES_TELETEXT:
  82                 case DMX_TS_PES_PCR:
  83                 case DMX_TS_PES_OTHER:
  84                         c = alloc_channel(fdtv);
  85                         break;
  86                 default:
  87                         dev_err(fdtv->device,
  88                                 "can't start dmx feed: invalid pes type %u\n",
  89                                 dvbdmxfeed->pes_type);
  90                         ret = -EINVAL;
  91                         goto out;
  92                 }
  93         } else {
  94                 c = alloc_channel(fdtv);
  95         }
  96
  97         if (c > 15) {
  98                 dev_err(fdtv->device, "can't start dmx feed: busy\n");
  99                 ret = -EBUSY;
 100                 goto out;
 101         }
 102
 103         dvbdmxfeed->priv = (typeof(dvbdmxfeed->priv))(unsigned long)c;
 104         fdtv->channel_pid[c] = dvbdmxfeed->pid;
 105         collect_channels(fdtv, &pidc, pids);
 106
 107         if (dvbdmxfeed->pid == 8192) {
 108                 ret = avc_tuner_get_ts(fdtv);
 109                 if (ret) {
 110                         dealloc_channel(fdtv, c);
 111                         dev_err(fdtv->device, "can't get TS\n");
 112                         goto out;
 113                 }
 114         } else {
 115                 ret = avc_tuner_set_pids(fdtv, pidc, pids);
 116                 if (ret) {
 117                         dealloc_channel(fdtv, c);
 118                         dev_err(fdtv->device, "can't set PIDs\n");
 119                         goto out;
 120                 }
 121         }
 122 out:
 123         mutex_unlock(&fdtv->demux_mutex);
 124
 125         return ret;
 126 }
 127
 128 int fdtv_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
 129 {
 130         struct dvb_demux *demux = dvbdmxfeed->demux;
 131         struct firedtv *fdtv = demux->priv;
 132         int pidc, c, ret;
 133         u16 pids[16];
 134
 135         if (dvbdmxfeed->type == DMX_TYPE_TS &&
 136             !((dvbdmxfeed->ts_type & TS_PACKET) &&
 137               (demux->dmx.frontend->source != DMX_MEMORY_FE))) {
 138
 139                 if (dvbdmxfeed->ts_type & TS_DECODER) {
 140                         if (dvbdmxfeed->pes_type >= DMX_TS_PES_OTHER ||
 141                             !demux->pesfilter[dvbdmxfeed->pes_type])
 142                                 return -EINVAL;
 143
 144                         demux->pids[dvbdmxfeed->pes_type] |= 0x8000;
 145                         demux->pesfilter[dvbdmxfeed->pes_type] = NULL;
 146                 }
 147
 148                 if (!(dvbdmxfeed->ts_type & TS_DECODER &&
 149                       dvbdmxfeed->pes_type < DMX_TS_PES_OTHER))
 150                         return 0;
 151         }
 152
 153         if (mutex_lock_interruptible(&fdtv->demux_mutex))
 154                 return -EINTR;
 155
 156         c = (unsigned long)dvbdmxfeed->priv;
 157         dealloc_channel(fdtv, c);
 158         collect_channels(fdtv, &pidc, pids);
 159
 160         ret = avc_tuner_set_pids(fdtv, pidc, pids);
 161
 162         mutex_unlock(&fdtv->demux_mutex);
 163
 164         return ret;
 165 }
 166
 167 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 168
 169 int fdtv_dvb_register(struct firedtv *fdtv)
 170 {
 171         int err;
 172
 173         err = dvb_register_adapter(&fdtv->adapter, fdtv_model_names[fdtv->type],
 174                                    THIS_MODULE, fdtv->device, adapter_nr);
 175         if (err < 0)
 176                 goto fail_log;
 177
 178         /*DMX_TS_FILTERING | DMX_SECTION_FILTERING*/
 179         fdtv->demux.dmx.capabilities = 0;
 180
 181         fdtv->demux.priv        = fdtv;
 182         fdtv->demux.filternum   = 16;
 183         fdtv->demux.feednum     = 16;
 184         fdtv->demux.start_feed  = fdtv_start_feed;
 185         fdtv->demux.stop_feed   = fdtv_stop_feed;
 186         fdtv->demux.write_to_decoder = NULL;
 187
 188         err = dvb_dmx_init(&fdtv->demux);
 189         if (err)
 190                 goto fail_unreg_adapter;
 191
 192         fdtv->dmxdev.filternum    = 16;
 193         fdtv->dmxdev.demux        = &fdtv->demux.dmx;
 194         fdtv->dmxdev.capabilities = 0;
 195
 196         err = dvb_dmxdev_init(&fdtv->dmxdev, &fdtv->adapter);
 197         if (err)
 198                 goto fail_dmx_release;
 199
 200         fdtv->frontend.source = DMX_FRONTEND_0;
 201
 202         err = fdtv->demux.dmx.add_frontend(&fdtv->demux.dmx, &fdtv->frontend);
 203         if (err)
 204                 goto fail_dmxdev_release;
 205
 206         err = fdtv->demux.dmx.connect_frontend(&fdtv->demux.dmx,
 207                                                &fdtv->frontend);
 208         if (err)
 209                 goto fail_rem_frontend;
 210
 211         dvb_net_init(&fdtv->adapter, &fdtv->dvbnet, &fdtv->demux.dmx);
 212
 213         fdtv_frontend_init(fdtv);
 214         err = dvb_register_frontend(&fdtv->adapter, &fdtv->fe);
 215         if (err)
 216                 goto fail_net_release;
 217
 218         err = fdtv_ca_register(fdtv);
 219         if (err)
 220                 dev_info(fdtv->device,
 221                          "Conditional Access Module not enabled\n");
 222         return 0;
 223
 224 fail_net_release:
 225         dvb_net_release(&fdtv->dvbnet);
 226         fdtv->demux.dmx.close(&fdtv->demux.dmx);
 227 fail_rem_frontend:
 228         fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
 229 fail_dmxdev_release:
 230         dvb_dmxdev_release(&fdtv->dmxdev);
 231 fail_dmx_release:
 232         dvb_dmx_release(&fdtv->demux);
 233 fail_unreg_adapter:
 234         dvb_unregister_adapter(&fdtv->adapter);
 235 fail_log:
 236         dev_err(fdtv->device, "DVB initialization failed\n");
 237         return err;
 238 }
 239
 240 void fdtv_dvb_unregister(struct firedtv *fdtv)
 241 {
 242         fdtv_ca_release(fdtv);
 243         dvb_unregister_frontend(&fdtv->fe);
 244         dvb_net_release(&fdtv->dvbnet);
 245         fdtv->demux.dmx.close(&fdtv->demux.dmx);
 246         fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
 247         dvb_dmxdev_release(&fdtv->dmxdev);
 248         dvb_dmx_release(&fdtv->demux);
 249         dvb_unregister_adapter(&fdtv->adapter);
 250 }
 251
 252 const char *fdtv_model_names[] = {
 253         [FIREDTV_UNKNOWN] = "unknown type",
 254         [FIREDTV_DVB_S]   = "FireDTV S/CI",
 255         [FIREDTV_DVB_C]   = "FireDTV C/CI",
 256         [FIREDTV_DVB_T]   = "FireDTV T/CI",
 257         [FIREDTV_DVB_S2]  = "FireDTV S2  ",
 258 };
 259
 260 struct firedtv *fdtv_alloc(struct device *dev,
 261                            const struct firedtv_backend *backend,
 262                            const char *name, size_t name_len)
 263 {
 264         struct firedtv *fdtv;
 265         int i;
 266
 267         fdtv = kzalloc(sizeof(*fdtv), GFP_KERNEL);
 268         if (!fdtv)
 269                 return NULL;
 270
 271         dev_set_drvdata(dev, fdtv);
 272         fdtv->device            = dev;
 273         fdtv->isochannel        = -1;
 274         fdtv->voltage           = 0xff;
 275         fdtv->tone              = 0xff;
 276         fdtv->backend           = backend;
 277
 278         mutex_init(&fdtv->avc_mutex);
 279         init_waitqueue_head(&fdtv->avc_wait);
 280         fdtv->avc_reply_received = true;
 281         mutex_init(&fdtv->demux_mutex);
 282         INIT_WORK(&fdtv->remote_ctrl_work, avc_remote_ctrl_work);
 283
 284         for (i = ARRAY_SIZE(fdtv_model_names); --i; )
 285                 if (strlen(fdtv_model_names[i]) <= name_len &&
 286                     strncmp(name, fdtv_model_names[i], name_len) == 0)
 287                         break;
 288         fdtv->type = i;
 289
 290         return fdtv;
 291 }
 292
 293 #define MATCH_FLAGS (IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_MODEL_ID | \
 294                      IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION)
 295
 296 #define DIGITAL_EVERYWHERE_OUI  0x001287
 297 #define AVC_UNIT_SPEC_ID_ENTRY  0x00a02d
 298 #define AVC_SW_VERSION_ENTRY    0x010001
 299
 300 static struct ieee1394_device_id fdtv_id_table[] = {
 301         {
 302                 /* FloppyDTV S/CI and FloppyDTV S2 */
 303                 .match_flags    = MATCH_FLAGS,
 304                 .vendor_id      = DIGITAL_EVERYWHERE_OUI,
 305                 .model_id       = 0x000024,
 306                 .specifier_id   = AVC_UNIT_SPEC_ID_ENTRY,
 307                 .version        = AVC_SW_VERSION_ENTRY,
 308         }, {
 309                 /* FloppyDTV T/CI */
 310                 .match_flags    = MATCH_FLAGS,
 311                 .vendor_id      = DIGITAL_EVERYWHERE_OUI,
 312                 .model_id       = 0x000025,
 313                 .specifier_id   = AVC_UNIT_SPEC_ID_ENTRY,
 314                 .version        = AVC_SW_VERSION_ENTRY,
 315         }, {
 316                 /* FloppyDTV C/CI */
 317                 .match_flags    = MATCH_FLAGS,
 318                 .vendor_id      = DIGITAL_EVERYWHERE_OUI,
 319                 .model_id       = 0x000026,
 320                 .specifier_id   = AVC_UNIT_SPEC_ID_ENTRY,
 321                 .version        = AVC_SW_VERSION_ENTRY,
 322         }, {
 323                 /* FireDTV S/CI and FloppyDTV S2 */
 324                 .match_flags    = MATCH_FLAGS,
 325                 .vendor_id      = DIGITAL_EVERYWHERE_OUI,
 326                 .model_id       = 0x000034,
 327                 .specifier_id   = AVC_UNIT_SPEC_ID_ENTRY,
 328                 .version        = AVC_SW_VERSION_ENTRY,
 329         }, {
 330                 /* FireDTV T/CI */
 331                 .match_flags    = MATCH_FLAGS,
 332                 .vendor_id      = DIGITAL_EVERYWHERE_OUI,
 333                 .model_id       = 0x000035,
 334                 .specifier_id   = AVC_UNIT_SPEC_ID_ENTRY,
 335                 .version        = AVC_SW_VERSION_ENTRY,
 336         }, {
 337                 /* FireDTV C/CI */
 338                 .match_flags    = MATCH_FLAGS,
 339                 .vendor_id      = DIGITAL_EVERYWHERE_OUI,
 340                 .model_id       = 0x000036,
 341                 .specifier_id   = AVC_UNIT_SPEC_ID_ENTRY,
 342                 .version        = AVC_SW_VERSION_ENTRY,
 343         }, {}
 344 };
 345 MODULE_DEVICE_TABLE(ieee1394, fdtv_id_table);
 346
 347 static int __init fdtv_init(void)
 348 {
 349         return fdtv_1394_init(fdtv_id_table);
 350 }
 351
 352 static void __exit fdtv_exit(void)
 353 {
 354         fdtv_1394_exit();
 355 }
 356
 357 module_init(fdtv_init);
 358 module_exit(fdtv_exit);
 359
 360 MODULE_AUTHOR("Andreas Monitzer <andy@monitzer.com>");
 361 MODULE_AUTHOR("Ben Backx <ben@bbackx.com>");
 362 MODULE_DESCRIPTION("FireDTV DVB Driver");
 363 MODULE_LICENSE("GPL");
 364 MODULE_SUPPORTED_DEVICE("FireDTV DVB");