SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/cx88/cx88-mpeg.c

   1 /*
   2  *
   3  *  Support for the mpeg transport stream transfers
   4  *  PCI function #2 of the cx2388x.
   5  *
   6  *    (c) 2004 Jelle Foks <jelle@foks.8m.com>
   7  *    (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
   8  *    (c) 2004 Gerd Knorr <kraxel@bytesex.org>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/device.h>
  28 #include <linux/dma-mapping.h>
  29 #include <linux/interrupt.h>
  30 #include <asm/delay.h>
  31
  32 #include "cx88.h"
  33
  34 /* ------------------------------------------------------------------ */
  35
  36 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
  37 MODULE_AUTHOR("Jelle Foks <jelle@foks.8m.com>");
  38 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
  39 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
  40 MODULE_LICENSE("GPL");
  41
  42 static unsigned int debug = 0;
  43 module_param(debug,int,0644);
  44 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
  45
  46 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  47         printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
  48
  49 #define mpeg_dbg(level,fmt, arg...)     if (debug >= level) \
  50         printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
  51
  52 #if defined(CONFIG_MODULES) && defined(MODULE)
  53 static void request_module_async(struct work_struct *work)
  54 {
  55         struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
  56
  57         if (dev->core->board.mpeg & CX88_MPEG_DVB)
  58                 request_module("cx88-dvb");
  59         if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
  60                 request_module("cx88-blackbird");
  61 }
  62
  63 static void request_modules(struct cx8802_dev *dev)
  64 {
  65         INIT_WORK(&dev->request_module_wk, request_module_async);
  66         schedule_work(&dev->request_module_wk);
  67 }
  68 #else
  69 #define request_modules(dev)
  70 #endif /* CONFIG_MODULES */
  71
  72
  73 static LIST_HEAD(cx8802_devlist);
  74 /* ------------------------------------------------------------------ */
  75
  76 static int cx8802_start_dma(struct cx8802_dev    *dev,
  77                             struct cx88_dmaqueue *q,
  78                             struct cx88_buffer   *buf)
  79 {
  80         struct cx88_core *core = dev->core;
  81
  82         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
  83                 buf->vb.width, buf->vb.height, buf->vb.field);
  84
  85         /* setup fifo + format */
  86         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  87                                 dev->ts_packet_size, buf->risc.dma);
  88
  89         /* write TS length to chip */
  90         cx_write(MO_TS_LNGTH, buf->vb.width);
  91
  92         /* FIXME: this needs a review.
  93          * also: move to cx88-blackbird + cx88-dvb source files? */
  94
  95         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
  96
  97         if ( (core->active_type_id == CX88_MPEG_DVB) &&
  98                 (core->board.mpeg & CX88_MPEG_DVB) ) {
  99
 100                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 101                 /* negedge driven & software reset */
 102                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 103                 udelay(100);
 104                 cx_write(MO_PINMUX_IO, 0x00);
 105                 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
 106                 switch (core->boardnr) {
 107                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 108                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 109                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 110                 case CX88_BOARD_PCHDTV_HD5500:
 111                         cx_write(TS_SOP_STAT, 1<<13);
 112                         break;
 113                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 114                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 115                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 116                         udelay(100);
 117                         break;
 118                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 119                         break;
 120                 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 121                         /* Enable MPEG parallel port */
 122                         cx_write(MO_PINMUX_IO, 0x80);
 123                         udelay(100);
 124                         break;
 125                 default:
 126                         cx_write(TS_SOP_STAT, 0x00);
 127                         break;
 128                 }
 129                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 130                 udelay(100);
 131         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 132                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 133                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 134                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 135
 136                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 137                 udelay(100);
 138
 139                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 140                 cx_write(TS_VALERR_CNTRL, 0x2000);
 141
 142                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 143                 udelay(100);
 144         } else {
 145                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
 146                         core->board.mpeg );
 147                 return -EINVAL;
 148         }
 149
 150         /* reset counter */
 151         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 152         q->count = 1;
 153
 154         /* enable irqs */
 155         dprintk( 1, "setting the interrupt mask\n" );
 156         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 157         cx_set(MO_TS_INTMSK,  0x1f0011);
 158
 159         /* start dma */
 160         cx_set(MO_DEV_CNTRL2, (1<<5));
 161         cx_set(MO_TS_DMACNTRL, 0x11);
 162         return 0;
 163 }
 164
 165 static int cx8802_stop_dma(struct cx8802_dev *dev)
 166 {
 167         struct cx88_core *core = dev->core;
 168         dprintk( 1, "cx8802_stop_dma\n" );
 169
 170         /* stop dma */
 171         cx_clear(MO_TS_DMACNTRL, 0x11);
 172
 173         /* disable irqs */
 174         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 175         cx_clear(MO_TS_INTMSK, 0x1f0011);
 176
 177         /* Reset the controller */
 178         cx_write(TS_GEN_CNTRL, 0xcd);
 179         return 0;
 180 }
 181
 182 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 183                                 struct cx88_dmaqueue *q)
 184 {
 185         struct cx88_buffer *buf;
 186
 187         dprintk( 1, "cx8802_restart_queue\n" );
 188         if (list_empty(&q->active))
 189         {
 190                 struct cx88_buffer *prev;
 191                 prev = NULL;
 192
 193                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 194
 195                 for (;;) {
 196                         if (list_empty(&q->queued))
 197                                 return 0;
 198                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 199                         if (NULL == prev) {
 200                                 list_del(&buf->vb.queue);
 201                                 list_add_tail(&buf->vb.queue,&q->active);
 202                                 cx8802_start_dma(dev, q, buf);
 203                                 buf->vb.state = VIDEOBUF_ACTIVE;
 204                                 buf->count    = q->count++;
 205                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 206                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 207                                         buf,buf->vb.i);
 208
 209                         } else if (prev->vb.width  == buf->vb.width  &&
 210                                    prev->vb.height == buf->vb.height &&
 211                                    prev->fmt       == buf->fmt) {
 212                                 list_del(&buf->vb.queue);
 213                                 list_add_tail(&buf->vb.queue,&q->active);
 214                                 buf->vb.state = VIDEOBUF_ACTIVE;
 215                                 buf->count    = q->count++;
 216                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 217                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 218                                         buf,buf->vb.i);
 219                         } else {
 220                                 return 0;
 221                         }
 222                         prev = buf;
 223                 }
 224                 return 0;
 225         }
 226
 227         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 228         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 229                 buf, buf->vb.i);
 230         cx8802_start_dma(dev, q, buf);
 231         list_for_each_entry(buf, &q->active, vb.queue)
 232                 buf->count = q->count++;
 233         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 234         return 0;
 235 }
 236
 237 /* ------------------------------------------------------------------ */
 238
 239 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 240                         struct cx88_buffer *buf, enum v4l2_field field)
 241 {
 242         int size = dev->ts_packet_size * dev->ts_packet_count;
 243         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 244         int rc;
 245
 246         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
 247         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 248                 return -EINVAL;
 249
 250         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 251                 buf->vb.width  = dev->ts_packet_size;
 252                 buf->vb.height = dev->ts_packet_count;
 253                 buf->vb.size   = size;
 254                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 255
 256                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 257                         goto fail;
 258                 cx88_risc_databuffer(dev->pci, &buf->risc,
 259                                      dma->sglist,
 260                                      buf->vb.width, buf->vb.height, 0);
 261         }
 262         buf->vb.state = VIDEOBUF_PREPARED;
 263         return 0;
 264
 265  fail:
 266         cx88_free_buffer(q,buf);
 267         return rc;
 268 }
 269
 270 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 271 {
 272         struct cx88_buffer    *prev;
 273         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 274
 275         dprintk( 1, "cx8802_buf_queue\n" );
 276         /* add jump to stopper */
 277         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 278         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 279
 280         if (list_empty(&cx88q->active)) {
 281                 dprintk( 1, "queue is empty - first active\n" );
 282                 list_add_tail(&buf->vb.queue,&cx88q->active);
 283                 cx8802_start_dma(dev, cx88q, buf);
 284                 buf->vb.state = VIDEOBUF_ACTIVE;
 285                 buf->count    = cx88q->count++;
 286                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 287                 dprintk(1,"[%p/%d] %s - first active\n",
 288                         buf, buf->vb.i, __FUNCTION__);
 289
 290         } else {
 291                 dprintk( 1, "queue is not empty - append to active\n" );
 292                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 293                 list_add_tail(&buf->vb.queue,&cx88q->active);
 294                 buf->vb.state = VIDEOBUF_ACTIVE;
 295                 buf->count    = cx88q->count++;
 296                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 297                 dprintk( 1, "[%p/%d] %s - append to active\n",
 298                         buf, buf->vb.i, __FUNCTION__);
 299         }
 300 }
 301
 302 /* ----------------------------------------------------------- */
 303
 304 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 305 {
 306         struct cx88_dmaqueue *q = &dev->mpegq;
 307         struct cx88_buffer *buf;
 308         unsigned long flags;
 309
 310         spin_lock_irqsave(&dev->slock,flags);
 311         while (!list_empty(&q->active)) {
 312                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 313                 list_del(&buf->vb.queue);
 314                 buf->vb.state = VIDEOBUF_ERROR;
 315                 wake_up(&buf->vb.done);
 316                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 317                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 318         }
 319         if (restart)
 320         {
 321                 dprintk(1, "restarting queue\n" );
 322                 cx8802_restart_queue(dev,q);
 323         }
 324         spin_unlock_irqrestore(&dev->slock,flags);
 325 }
 326
 327 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 328 {
 329         struct cx88_dmaqueue *q = &dev->mpegq;
 330
 331         dprintk( 1, "cx8802_cancel_buffers" );
 332         del_timer_sync(&q->timeout);
 333         cx8802_stop_dma(dev);
 334         do_cancel_buffers(dev,"cancel",0);
 335 }
 336
 337 static void cx8802_timeout(unsigned long data)
 338 {
 339         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 340
 341         dprintk(1, "%s\n",__FUNCTION__);
 342
 343         if (debug)
 344                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 345         cx8802_stop_dma(dev);
 346         do_cancel_buffers(dev,"timeout",1);
 347 }
 348
 349 static char *cx88_mpeg_irqs[32] = {
 350         "ts_risci1", NULL, NULL, NULL,
 351         "ts_risci2", NULL, NULL, NULL,
 352         "ts_oflow",  NULL, NULL, NULL,
 353         "ts_sync",   NULL, NULL, NULL,
 354         "opc_err", "par_err", "rip_err", "pci_abort",
 355         "ts_err?",
 356 };
 357
 358 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 359 {
 360         struct cx88_core *core = dev->core;
 361         u32 status, mask, count;
 362
 363         dprintk( 1, "cx8802_mpeg_irq\n" );
 364         status = cx_read(MO_TS_INTSTAT);
 365         mask   = cx_read(MO_TS_INTMSK);
 366         if (0 == (status & mask))
 367                 return;
 368
 369         cx_write(MO_TS_INTSTAT, status);
 370
 371         if (debug || (status & mask & ~0xff))
 372                 cx88_print_irqbits(core->name, "irq mpeg ",
 373                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 374                                    status, mask);
 375
 376         /* risc op code error */
 377         if (status & (1 << 16)) {
 378                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 379                 cx_clear(MO_TS_DMACNTRL, 0x11);
 380                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 381         }
 382
 383         /* risc1 y */
 384         if (status & 0x01) {
 385                 dprintk( 1, "wake up\n" );
 386                 spin_lock(&dev->slock);
 387                 count = cx_read(MO_TS_GPCNT);
 388                 cx88_wakeup(dev->core, &dev->mpegq, count);
 389                 spin_unlock(&dev->slock);
 390         }
 391
 392         /* risc2 y */
 393         if (status & 0x10) {
 394                 spin_lock(&dev->slock);
 395                 cx8802_restart_queue(dev,&dev->mpegq);
 396                 spin_unlock(&dev->slock);
 397         }
 398
 399         /* other general errors */
 400         if (status & 0x1f0100) {
 401                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 402                 spin_lock(&dev->slock);
 403                 cx8802_stop_dma(dev);
 404                 cx8802_restart_queue(dev,&dev->mpegq);
 405                 spin_unlock(&dev->slock);
 406         }
 407 }
 408
 409 #define MAX_IRQ_LOOP 10
 410
 411 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 412 {
 413         struct cx8802_dev *dev = dev_id;
 414         struct cx88_core *core = dev->core;
 415         u32 status;
 416         int loop, handled = 0;
 417
 418         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 419                 status = cx_read(MO_PCI_INTSTAT) &
 420                         (core->pci_irqmask | PCI_INT_TSINT);
 421                 if (0 == status)
 422                         goto out;
 423                 dprintk( 1, "cx8802_irq\n" );
 424                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 425                 dprintk( 1, "    status: %d\n", status );
 426                 handled = 1;
 427                 cx_write(MO_PCI_INTSTAT, status);
 428
 429                 if (status & core->pci_irqmask)
 430                         cx88_core_irq(core,status);
 431                 if (status & PCI_INT_TSINT)
 432                         cx8802_mpeg_irq(dev);
 433         };
 434         if (MAX_IRQ_LOOP == loop) {
 435                 dprintk( 0, "clearing mask\n" );
 436                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 437                        core->name);
 438                 cx_write(MO_PCI_INTMSK,0);
 439         }
 440
 441  out:
 442         return IRQ_RETVAL(handled);
 443 }
 444
 445 static int cx8802_init_common(struct cx8802_dev *dev)
 446 {
 447         struct cx88_core *core = dev->core;
 448         int err;
 449
 450         /* pci init */
 451         if (pci_enable_device(dev->pci))
 452                 return -EIO;
 453         pci_set_master(dev->pci);
 454         if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
 455                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 456                 return -EIO;
 457         }
 458
 459         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 460         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 461         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 462                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 463                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 464                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 465
 466         /* initialize driver struct */
 467         spin_lock_init(&dev->slock);
 468
 469         /* init dma queue */
 470         INIT_LIST_HEAD(&dev->mpegq.active);
 471         INIT_LIST_HEAD(&dev->mpegq.queued);
 472         dev->mpegq.timeout.function = cx8802_timeout;
 473         dev->mpegq.timeout.data     = (unsigned long)dev;
 474         init_timer(&dev->mpegq.timeout);
 475         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 476                           MO_TS_DMACNTRL,0x11,0x00);
 477
 478         /* get irq */
 479         err = request_irq(dev->pci->irq, cx8802_irq,
 480                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 481         if (err < 0) {
 482                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 483                        dev->core->name, dev->pci->irq);
 484                 return err;
 485         }
 486         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 487
 488         /* everything worked */
 489         pci_set_drvdata(dev->pci,dev);
 490         return 0;
 491 }
 492
 493 static void cx8802_fini_common(struct cx8802_dev *dev)
 494 {
 495         dprintk( 2, "cx8802_fini_common\n" );
 496         cx8802_stop_dma(dev);
 497         pci_disable_device(dev->pci);
 498
 499         /* unregister stuff */
 500         free_irq(dev->pci->irq, dev);
 501         pci_set_drvdata(dev->pci, NULL);
 502
 503         /* free memory */
 504         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 505 }
 506
 507 /* ----------------------------------------------------------- */
 508
 509 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 510 {
 511         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 512         struct cx88_core *core = dev->core;
 513
 514         /* stop mpeg dma */
 515         spin_lock(&dev->slock);
 516         if (!list_empty(&dev->mpegq.active)) {
 517                 dprintk( 2, "suspend\n" );
 518                 printk("%s: suspend mpeg\n", core->name);
 519                 cx8802_stop_dma(dev);
 520                 del_timer(&dev->mpegq.timeout);
 521         }
 522         spin_unlock(&dev->slock);
 523
 524         /* FIXME -- shutdown device */
 525         cx88_shutdown(dev->core);
 526
 527         pci_save_state(pci_dev);
 528         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 529                 pci_disable_device(pci_dev);
 530                 dev->state.disabled = 1;
 531         }
 532         return 0;
 533 }
 534
 535 static int cx8802_resume_common(struct pci_dev *pci_dev)
 536 {
 537         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 538         struct cx88_core *core = dev->core;
 539         int err;
 540
 541         if (dev->state.disabled) {
 542                 err=pci_enable_device(pci_dev);
 543                 if (err) {
 544                         printk(KERN_ERR "%s: can't enable device\n",
 545                                                dev->core->name);
 546                         return err;
 547                 }
 548                 dev->state.disabled = 0;
 549         }
 550         err=pci_set_power_state(pci_dev, PCI_D0);
 551         if (err) {
 552                 printk(KERN_ERR "%s: can't enable device\n",
 553                                                dev->core->name);
 554                 pci_disable_device(pci_dev);
 555                 dev->state.disabled = 1;
 556
 557                 return err;
 558         }
 559         pci_restore_state(pci_dev);
 560
 561         /* FIXME: re-initialize hardware */
 562         cx88_reset(dev->core);
 563
 564         /* restart video+vbi capture */
 565         spin_lock(&dev->slock);
 566         if (!list_empty(&dev->mpegq.active)) {
 567                 printk("%s: resume mpeg\n", core->name);
 568                 cx8802_restart_queue(dev,&dev->mpegq);
 569         }
 570         spin_unlock(&dev->slock);
 571
 572         return 0;
 573 }
 574
 575 #if defined(CONFIG_VIDEO_CX88_BLACKBIRD) || \
 576     defined(CONFIG_VIDEO_CX88_BLACKBIRD_MODULE)
 577 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 578 {
 579         int minor = iminor(inode);
 580         struct cx8802_dev *dev;
 581
 582         list_for_each_entry(dev, &cx8802_devlist, devlist)
 583                 if (dev->mpeg_dev && dev->mpeg_dev->minor == minor)
 584                         return dev;
 585
 586         return NULL;
 587 }
 588 EXPORT_SYMBOL(cx8802_get_device);
 589 #endif
 590
 591 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 592 {
 593         struct cx8802_driver *d;
 594
 595         list_for_each_entry(d, &dev->drvlist, drvlist)
 596                 if (d->type_id == btype)
 597                         return d;
 598
 599         return NULL;
 600 }
 601
 602 /* Driver asked for hardware access. */
 603 static int cx8802_request_acquire(struct cx8802_driver *drv)
 604 {
 605         struct cx88_core *core = drv->core;
 606
 607         /* Fail a request for hardware if the device is busy. */
 608         if (core->active_type_id != CX88_BOARD_NONE)
 609                 return -EBUSY;
 610
 611         if (drv->advise_acquire)
 612         {
 613                 core->active_type_id = drv->type_id;
 614                 drv->advise_acquire(drv);
 615
 616                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 617         }
 618
 619         return 0;
 620 }
 621
 622 /* Driver asked to release hardware. */
 623 static int cx8802_request_release(struct cx8802_driver *drv)
 624 {
 625         struct cx88_core *core = drv->core;
 626
 627         if (drv->advise_release)
 628         {
 629                 drv->advise_release(drv);
 630                 core->active_type_id = CX88_BOARD_NONE;
 631                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 632         }
 633
 634         return 0;
 635 }
 636
 637 static int cx8802_check_driver(struct cx8802_driver *drv)
 638 {
 639         if (drv == NULL)
 640                 return -ENODEV;
 641
 642         if ((drv->type_id != CX88_MPEG_DVB) &&
 643                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 644                 return -EINVAL;
 645
 646         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 647                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 648                 return -EINVAL;
 649
 650         if ((drv->probe == NULL) ||
 651                 (drv->remove == NULL) ||
 652                 (drv->advise_acquire == NULL) ||
 653                 (drv->advise_release == NULL))
 654                 return -EINVAL;
 655
 656         return 0;
 657 }
 658
 659 int cx8802_register_driver(struct cx8802_driver *drv)
 660 {
 661         struct cx8802_dev *dev;
 662         struct cx8802_driver *driver;
 663         int err, i = 0;
 664
 665         printk(KERN_INFO
 666                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 667                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 668                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 669
 670         if ((err = cx8802_check_driver(drv)) != 0) {
 671                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 672                 return err;
 673         }
 674
 675         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 676                 printk(KERN_INFO
 677                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 678                        dev->core->name, dev->pci->subsystem_vendor,
 679                        dev->pci->subsystem_device, dev->core->board.name,
 680                        dev->core->boardnr);
 681
 682                 /* Bring up a new struct for each driver instance */
 683                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 684                 if (driver == NULL)
 685                         return -ENOMEM;
 686
 687                 /* Snapshot of the driver registration data */
 688                 drv->core = dev->core;
 689                 drv->suspend = cx8802_suspend_common;
 690                 drv->resume = cx8802_resume_common;
 691                 drv->request_acquire = cx8802_request_acquire;
 692                 drv->request_release = cx8802_request_release;
 693                 memcpy(driver, drv, sizeof(*driver));
 694
 695                 err = drv->probe(driver);
 696                 if (err == 0) {
 697                         i++;
 698                         mutex_lock(&drv->core->lock);
 699                         list_add_tail(&driver->drvlist, &dev->drvlist);
 700                         mutex_unlock(&drv->core->lock);
 701                 } else {
 702                         printk(KERN_ERR
 703                                "%s/2: cx8802 probe failed, err = %d\n",
 704                                dev->core->name, err);
 705                 }
 706
 707         }
 708
 709         return i ? 0 : -ENODEV;
 710 }
 711
 712 int cx8802_unregister_driver(struct cx8802_driver *drv)
 713 {
 714         struct cx8802_dev *dev;
 715         struct cx8802_driver *d, *dtmp;
 716         int err = 0;
 717
 718         printk(KERN_INFO
 719                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 720                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 721                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 722
 723         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 724                 printk(KERN_INFO
 725                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 726                        dev->core->name, dev->pci->subsystem_vendor,
 727                        dev->pci->subsystem_device, dev->core->board.name,
 728                        dev->core->boardnr);
 729
 730                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
 731                         /* only unregister the correct driver type */
 732                         if (d->type_id != drv->type_id)
 733                                 continue;
 734
 735                         err = d->remove(d);
 736                         if (err == 0) {
 737                                 mutex_lock(&drv->core->lock);
 738                                 list_del(&d->drvlist);
 739                                 mutex_unlock(&drv->core->lock);
 740                                 kfree(d);
 741                         } else
 742                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 743                                        "failed (%d)\n", dev->core->name, err);
 744                 }
 745
 746         }
 747
 748         return err;
 749 }
 750
 751 /* ----------------------------------------------------------- */
 752 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 753                                const struct pci_device_id *pci_id)
 754 {
 755         struct cx8802_dev *dev;
 756         struct cx88_core  *core;
 757         int err;
 758
 759         /* general setup */
 760         core = cx88_core_get(pci_dev);
 761         if (NULL == core)
 762                 return -EINVAL;
 763
 764         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 765
 766         err = -ENODEV;
 767         if (!core->board.mpeg)
 768                 goto fail_core;
 769
 770         err = -ENOMEM;
 771         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 772         if (NULL == dev)
 773                 goto fail_core;
 774         dev->pci = pci_dev;
 775         dev->core = core;
 776
 777         err = cx8802_init_common(dev);
 778         if (err != 0)
 779                 goto fail_free;
 780
 781         INIT_LIST_HEAD(&dev->drvlist);
 782         list_add_tail(&dev->devlist,&cx8802_devlist);
 783
 784         /* Maintain a reference so cx88-video can query the 8802 device. */
 785         core->dvbdev = dev;
 786
 787         /* now autoload cx88-dvb or cx88-blackbird */
 788         request_modules(dev);
 789         return 0;
 790
 791  fail_free:
 792         kfree(dev);
 793  fail_core:
 794         cx88_core_put(core,pci_dev);
 795         return err;
 796 }
 797
 798 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 799 {
 800         struct cx8802_dev *dev;
 801
 802         dev = pci_get_drvdata(pci_dev);
 803
 804         dprintk( 1, "%s\n", __FUNCTION__);
 805
 806         if (!list_empty(&dev->drvlist)) {
 807                 struct cx8802_driver *drv, *tmp;
 808                 int err;
 809
 810                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
 811                        "while cx8802 sub-drivers still loaded?!\n",
 812                        dev->core->name);
 813
 814                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
 815                         err = drv->remove(drv);
 816                         if (err == 0) {
 817                                 mutex_lock(&drv->core->lock);
 818                                 list_del(&drv->drvlist);
 819                                 mutex_unlock(&drv->core->lock);
 820                         } else
 821                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 822                                        "failed (%d)\n", dev->core->name, err);
 823                         kfree(drv);
 824                 }
 825         }
 826
 827         /* Destroy any 8802 reference. */
 828         dev->core->dvbdev = NULL;
 829
 830         /* common */
 831         cx8802_fini_common(dev);
 832         cx88_core_put(dev->core,dev->pci);
 833         kfree(dev);
 834 }
 835
 836 static struct pci_device_id cx8802_pci_tbl[] = {
 837         {
 838                 .vendor       = 0x14f1,
 839                 .device       = 0x8802,
 840                 .subvendor    = PCI_ANY_ID,
 841                 .subdevice    = PCI_ANY_ID,
 842         },{
 843                 /* --- end of list --- */
 844         }
 845 };
 846 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 847
 848 static struct pci_driver cx8802_pci_driver = {
 849         .name     = "cx88-mpeg driver manager",
 850         .id_table = cx8802_pci_tbl,
 851         .probe    = cx8802_probe,
 852         .remove   = __devexit_p(cx8802_remove),
 853 };
 854
 855 static int cx8802_init(void)
 856 {
 857         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
 858                (CX88_VERSION_CODE >> 16) & 0xff,
 859                (CX88_VERSION_CODE >>  8) & 0xff,
 860                CX88_VERSION_CODE & 0xff);
 861 #ifdef SNAPSHOT
 862         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 863                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 864 #endif
 865         return pci_register_driver(&cx8802_pci_driver);
 866 }
 867
 868 static void cx8802_fini(void)
 869 {
 870         pci_unregister_driver(&cx8802_pci_driver);
 871 }
 872
 873 module_init(cx8802_init);
 874 module_exit(cx8802_fini);
 875 EXPORT_SYMBOL(cx8802_buf_prepare);
 876 EXPORT_SYMBOL(cx8802_buf_queue);
 877 EXPORT_SYMBOL(cx8802_cancel_buffers);
 878
 879 EXPORT_SYMBOL(cx8802_register_driver);
 880 EXPORT_SYMBOL(cx8802_unregister_driver);
 881 EXPORT_SYMBOL(cx8802_get_driver);
 882 /* ----------------------------------------------------------- */
 883 /*
 884  * Local variables:
 885  * c-basic-offset: 8
 886  * End:
 887  * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
 888  */