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.us>
   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.us>");
  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;
  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                         /* Enable MPEG parallel IO and video signal pins */
 120                         cx_write(MO_PINMUX_IO, 0x88);
 121                         cx_write(TS_SOP_STAT, 0);
 122                         cx_write(TS_VALERR_CNTRL, 0);
 123                         break;
 124                 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 125                         /* Enable MPEG parallel IO and video signal pins */
 126                         cx_write(MO_PINMUX_IO, 0x88);
 127                         cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
 128                         dev->ts_gen_cntrl = 5;
 129                         cx_write(TS_SOP_STAT, 0);
 130                         cx_write(TS_VALERR_CNTRL, 0);
 131                         udelay(100);
 132                         break;
 133                 default:
 134                         cx_write(TS_SOP_STAT, 0x00);
 135                         break;
 136                 }
 137                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 138                 udelay(100);
 139         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 140                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 141                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 142                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 143
 144                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 145                 udelay(100);
 146
 147                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 148                 cx_write(TS_VALERR_CNTRL, 0x2000);
 149
 150                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 151                 udelay(100);
 152         } else {
 153                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
 154                         core->board.mpeg );
 155                 return -EINVAL;
 156         }
 157
 158         /* reset counter */
 159         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 160         q->count = 1;
 161
 162         /* enable irqs */
 163         dprintk( 1, "setting the interrupt mask\n" );
 164         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 165         cx_set(MO_TS_INTMSK,  0x1f0011);
 166
 167         /* start dma */
 168         cx_set(MO_DEV_CNTRL2, (1<<5));
 169         cx_set(MO_TS_DMACNTRL, 0x11);
 170         return 0;
 171 }
 172
 173 static int cx8802_stop_dma(struct cx8802_dev *dev)
 174 {
 175         struct cx88_core *core = dev->core;
 176         dprintk( 1, "cx8802_stop_dma\n" );
 177
 178         /* stop dma */
 179         cx_clear(MO_TS_DMACNTRL, 0x11);
 180
 181         /* disable irqs */
 182         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 183         cx_clear(MO_TS_INTMSK, 0x1f0011);
 184
 185         /* Reset the controller */
 186         cx_write(TS_GEN_CNTRL, 0xcd);
 187         return 0;
 188 }
 189
 190 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 191                                 struct cx88_dmaqueue *q)
 192 {
 193         struct cx88_buffer *buf;
 194
 195         dprintk( 1, "cx8802_restart_queue\n" );
 196         if (list_empty(&q->active))
 197         {
 198                 struct cx88_buffer *prev;
 199                 prev = NULL;
 200
 201                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 202
 203                 for (;;) {
 204                         if (list_empty(&q->queued))
 205                                 return 0;
 206                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 207                         if (NULL == prev) {
 208                                 list_del(&buf->vb.queue);
 209                                 list_add_tail(&buf->vb.queue,&q->active);
 210                                 cx8802_start_dma(dev, q, buf);
 211                                 buf->vb.state = VIDEOBUF_ACTIVE;
 212                                 buf->count    = q->count++;
 213                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 214                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 215                                         buf,buf->vb.i);
 216
 217                         } else if (prev->vb.width  == buf->vb.width  &&
 218                                    prev->vb.height == buf->vb.height &&
 219                                    prev->fmt       == buf->fmt) {
 220                                 list_del(&buf->vb.queue);
 221                                 list_add_tail(&buf->vb.queue,&q->active);
 222                                 buf->vb.state = VIDEOBUF_ACTIVE;
 223                                 buf->count    = q->count++;
 224                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 225                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 226                                         buf,buf->vb.i);
 227                         } else {
 228                                 return 0;
 229                         }
 230                         prev = buf;
 231                 }
 232                 return 0;
 233         }
 234
 235         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 236         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 237                 buf, buf->vb.i);
 238         cx8802_start_dma(dev, q, buf);
 239         list_for_each_entry(buf, &q->active, vb.queue)
 240                 buf->count = q->count++;
 241         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 242         return 0;
 243 }
 244
 245 /* ------------------------------------------------------------------ */
 246
 247 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 248                         struct cx88_buffer *buf, enum v4l2_field field)
 249 {
 250         int size = dev->ts_packet_size * dev->ts_packet_count;
 251         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 252         int rc;
 253
 254         dprintk(1, "%s: %p\n", __func__, buf);
 255         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 256                 return -EINVAL;
 257
 258         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 259                 buf->vb.width  = dev->ts_packet_size;
 260                 buf->vb.height = dev->ts_packet_count;
 261                 buf->vb.size   = size;
 262                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 263
 264                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 265                         goto fail;
 266                 cx88_risc_databuffer(dev->pci, &buf->risc,
 267                                      dma->sglist,
 268                                      buf->vb.width, buf->vb.height, 0);
 269         }
 270         buf->vb.state = VIDEOBUF_PREPARED;
 271         return 0;
 272
 273  fail:
 274         cx88_free_buffer(q,buf);
 275         return rc;
 276 }
 277
 278 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 279 {
 280         struct cx88_buffer    *prev;
 281         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 282
 283         dprintk( 1, "cx8802_buf_queue\n" );
 284         /* add jump to stopper */
 285         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 286         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 287
 288         if (list_empty(&cx88q->active)) {
 289                 dprintk( 1, "queue is empty - first active\n" );
 290                 list_add_tail(&buf->vb.queue,&cx88q->active);
 291                 cx8802_start_dma(dev, cx88q, buf);
 292                 buf->vb.state = VIDEOBUF_ACTIVE;
 293                 buf->count    = cx88q->count++;
 294                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 295                 dprintk(1,"[%p/%d] %s - first active\n",
 296                         buf, buf->vb.i, __func__);
 297
 298         } else {
 299                 dprintk( 1, "queue is not empty - append to active\n" );
 300                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 301                 list_add_tail(&buf->vb.queue,&cx88q->active);
 302                 buf->vb.state = VIDEOBUF_ACTIVE;
 303                 buf->count    = cx88q->count++;
 304                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 305                 dprintk( 1, "[%p/%d] %s - append to active\n",
 306                         buf, buf->vb.i, __func__);
 307         }
 308 }
 309
 310 /* ----------------------------------------------------------- */
 311
 312 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 313 {
 314         struct cx88_dmaqueue *q = &dev->mpegq;
 315         struct cx88_buffer *buf;
 316         unsigned long flags;
 317
 318         spin_lock_irqsave(&dev->slock,flags);
 319         while (!list_empty(&q->active)) {
 320                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 321                 list_del(&buf->vb.queue);
 322                 buf->vb.state = VIDEOBUF_ERROR;
 323                 wake_up(&buf->vb.done);
 324                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 325                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 326         }
 327         if (restart)
 328         {
 329                 dprintk(1, "restarting queue\n" );
 330                 cx8802_restart_queue(dev,q);
 331         }
 332         spin_unlock_irqrestore(&dev->slock,flags);
 333 }
 334
 335 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 336 {
 337         struct cx88_dmaqueue *q = &dev->mpegq;
 338
 339         dprintk( 1, "cx8802_cancel_buffers" );
 340         del_timer_sync(&q->timeout);
 341         cx8802_stop_dma(dev);
 342         do_cancel_buffers(dev,"cancel",0);
 343 }
 344
 345 static void cx8802_timeout(unsigned long data)
 346 {
 347         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 348
 349         dprintk(1, "%s\n",__func__);
 350
 351         if (debug)
 352                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 353         cx8802_stop_dma(dev);
 354         do_cancel_buffers(dev,"timeout",1);
 355 }
 356
 357 static char *cx88_mpeg_irqs[32] = {
 358         "ts_risci1", NULL, NULL, NULL,
 359         "ts_risci2", NULL, NULL, NULL,
 360         "ts_oflow",  NULL, NULL, NULL,
 361         "ts_sync",   NULL, NULL, NULL,
 362         "opc_err", "par_err", "rip_err", "pci_abort",
 363         "ts_err?",
 364 };
 365
 366 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 367 {
 368         struct cx88_core *core = dev->core;
 369         u32 status, mask, count;
 370
 371         dprintk( 1, "cx8802_mpeg_irq\n" );
 372         status = cx_read(MO_TS_INTSTAT);
 373         mask   = cx_read(MO_TS_INTMSK);
 374         if (0 == (status & mask))
 375                 return;
 376
 377         cx_write(MO_TS_INTSTAT, status);
 378
 379         if (debug || (status & mask & ~0xff))
 380                 cx88_print_irqbits(core->name, "irq mpeg ",
 381                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 382                                    status, mask);
 383
 384         /* risc op code error */
 385         if (status & (1 << 16)) {
 386                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 387                 cx_clear(MO_TS_DMACNTRL, 0x11);
 388                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 389         }
 390
 391         /* risc1 y */
 392         if (status & 0x01) {
 393                 dprintk( 1, "wake up\n" );
 394                 spin_lock(&dev->slock);
 395                 count = cx_read(MO_TS_GPCNT);
 396                 cx88_wakeup(dev->core, &dev->mpegq, count);
 397                 spin_unlock(&dev->slock);
 398         }
 399
 400         /* risc2 y */
 401         if (status & 0x10) {
 402                 spin_lock(&dev->slock);
 403                 cx8802_restart_queue(dev,&dev->mpegq);
 404                 spin_unlock(&dev->slock);
 405         }
 406
 407         /* other general errors */
 408         if (status & 0x1f0100) {
 409                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 410                 spin_lock(&dev->slock);
 411                 cx8802_stop_dma(dev);
 412                 cx8802_restart_queue(dev,&dev->mpegq);
 413                 spin_unlock(&dev->slock);
 414         }
 415 }
 416
 417 #define MAX_IRQ_LOOP 10
 418
 419 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 420 {
 421         struct cx8802_dev *dev = dev_id;
 422         struct cx88_core *core = dev->core;
 423         u32 status;
 424         int loop, handled = 0;
 425
 426         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 427                 status = cx_read(MO_PCI_INTSTAT) &
 428                         (core->pci_irqmask | PCI_INT_TSINT);
 429                 if (0 == status)
 430                         goto out;
 431                 dprintk( 1, "cx8802_irq\n" );
 432                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 433                 dprintk( 1, "    status: %d\n", status );
 434                 handled = 1;
 435                 cx_write(MO_PCI_INTSTAT, status);
 436
 437                 if (status & core->pci_irqmask)
 438                         cx88_core_irq(core,status);
 439                 if (status & PCI_INT_TSINT)
 440                         cx8802_mpeg_irq(dev);
 441         };
 442         if (MAX_IRQ_LOOP == loop) {
 443                 dprintk( 0, "clearing mask\n" );
 444                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 445                        core->name);
 446                 cx_write(MO_PCI_INTMSK,0);
 447         }
 448
 449  out:
 450         return IRQ_RETVAL(handled);
 451 }
 452
 453 static int cx8802_init_common(struct cx8802_dev *dev)
 454 {
 455         struct cx88_core *core = dev->core;
 456         int err;
 457
 458         /* pci init */
 459         if (pci_enable_device(dev->pci))
 460                 return -EIO;
 461         pci_set_master(dev->pci);
 462         if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
 463                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 464                 return -EIO;
 465         }
 466
 467         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 468         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 469         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 470                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 471                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 472                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 473
 474         /* initialize driver struct */
 475         spin_lock_init(&dev->slock);
 476
 477         /* init dma queue */
 478         INIT_LIST_HEAD(&dev->mpegq.active);
 479         INIT_LIST_HEAD(&dev->mpegq.queued);
 480         dev->mpegq.timeout.function = cx8802_timeout;
 481         dev->mpegq.timeout.data     = (unsigned long)dev;
 482         init_timer(&dev->mpegq.timeout);
 483         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 484                           MO_TS_DMACNTRL,0x11,0x00);
 485
 486         /* get irq */
 487         err = request_irq(dev->pci->irq, cx8802_irq,
 488                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 489         if (err < 0) {
 490                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 491                        dev->core->name, dev->pci->irq);
 492                 return err;
 493         }
 494         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 495
 496         /* everything worked */
 497         pci_set_drvdata(dev->pci,dev);
 498         return 0;
 499 }
 500
 501 static void cx8802_fini_common(struct cx8802_dev *dev)
 502 {
 503         dprintk( 2, "cx8802_fini_common\n" );
 504         cx8802_stop_dma(dev);
 505         pci_disable_device(dev->pci);
 506
 507         /* unregister stuff */
 508         free_irq(dev->pci->irq, dev);
 509         pci_set_drvdata(dev->pci, NULL);
 510
 511         /* free memory */
 512         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 513 }
 514
 515 /* ----------------------------------------------------------- */
 516
 517 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 518 {
 519         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 520         struct cx88_core *core = dev->core;
 521
 522         /* stop mpeg dma */
 523         spin_lock(&dev->slock);
 524         if (!list_empty(&dev->mpegq.active)) {
 525                 dprintk( 2, "suspend\n" );
 526                 printk("%s: suspend mpeg\n", core->name);
 527                 cx8802_stop_dma(dev);
 528                 del_timer(&dev->mpegq.timeout);
 529         }
 530         spin_unlock(&dev->slock);
 531
 532         /* FIXME -- shutdown device */
 533         cx88_shutdown(dev->core);
 534
 535         pci_save_state(pci_dev);
 536         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 537                 pci_disable_device(pci_dev);
 538                 dev->state.disabled = 1;
 539         }
 540         return 0;
 541 }
 542
 543 static int cx8802_resume_common(struct pci_dev *pci_dev)
 544 {
 545         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 546         struct cx88_core *core = dev->core;
 547         int err;
 548
 549         if (dev->state.disabled) {
 550                 err=pci_enable_device(pci_dev);
 551                 if (err) {
 552                         printk(KERN_ERR "%s: can't enable device\n",
 553                                                dev->core->name);
 554                         return err;
 555                 }
 556                 dev->state.disabled = 0;
 557         }
 558         err=pci_set_power_state(pci_dev, PCI_D0);
 559         if (err) {
 560                 printk(KERN_ERR "%s: can't enable device\n",
 561                                                dev->core->name);
 562                 pci_disable_device(pci_dev);
 563                 dev->state.disabled = 1;
 564
 565                 return err;
 566         }
 567         pci_restore_state(pci_dev);
 568
 569         /* FIXME: re-initialize hardware */
 570         cx88_reset(dev->core);
 571
 572         /* restart video+vbi capture */
 573         spin_lock(&dev->slock);
 574         if (!list_empty(&dev->mpegq.active)) {
 575                 printk("%s: resume mpeg\n", core->name);
 576                 cx8802_restart_queue(dev,&dev->mpegq);
 577         }
 578         spin_unlock(&dev->slock);
 579
 580         return 0;
 581 }
 582
 583 #if defined(CONFIG_VIDEO_CX88_BLACKBIRD) || \
 584     defined(CONFIG_VIDEO_CX88_BLACKBIRD_MODULE)
 585 struct cx8802_dev *cx8802_get_device(int minor)
 586 {
 587         struct cx8802_dev *dev;
 588
 589         list_for_each_entry(dev, &cx8802_devlist, devlist)
 590                 if (dev->mpeg_dev && dev->mpeg_dev->minor == minor)
 591                         return dev;
 592
 593         return NULL;
 594 }
 595 EXPORT_SYMBOL(cx8802_get_device);
 596 #endif
 597
 598 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 599 {
 600         struct cx8802_driver *d;
 601
 602         list_for_each_entry(d, &dev->drvlist, drvlist)
 603                 if (d->type_id == btype)
 604                         return d;
 605
 606         return NULL;
 607 }
 608
 609 /* Driver asked for hardware access. */
 610 static int cx8802_request_acquire(struct cx8802_driver *drv)
 611 {
 612         struct cx88_core *core = drv->core;
 613
 614         /* Fail a request for hardware if the device is busy. */
 615         if (core->active_type_id != CX88_BOARD_NONE &&
 616             core->active_type_id != drv->type_id)
 617                 return -EBUSY;
 618
 619         core->input = CX88_VMUX_DVB;
 620
 621         if (drv->advise_acquire)
 622         {
 623                 mutex_lock(&drv->core->lock);
 624                 core->active_ref++;
 625                 if (core->active_type_id == CX88_BOARD_NONE) {
 626                         core->active_type_id = drv->type_id;
 627                         drv->advise_acquire(drv);
 628                 }
 629                 mutex_unlock(&drv->core->lock);
 630
 631                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 632         }
 633
 634         return 0;
 635 }
 636
 637 /* Driver asked to release hardware. */
 638 static int cx8802_request_release(struct cx8802_driver *drv)
 639 {
 640         struct cx88_core *core = drv->core;
 641
 642         mutex_lock(&drv->core->lock);
 643         if (drv->advise_release && --core->active_ref == 0)
 644         {
 645                 drv->advise_release(drv);
 646                 core->active_type_id = CX88_BOARD_NONE;
 647                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 648         }
 649         mutex_unlock(&drv->core->lock);
 650
 651         return 0;
 652 }
 653
 654 static int cx8802_check_driver(struct cx8802_driver *drv)
 655 {
 656         if (drv == NULL)
 657                 return -ENODEV;
 658
 659         if ((drv->type_id != CX88_MPEG_DVB) &&
 660                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 661                 return -EINVAL;
 662
 663         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 664                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 665                 return -EINVAL;
 666
 667         if ((drv->probe == NULL) ||
 668                 (drv->remove == NULL) ||
 669                 (drv->advise_acquire == NULL) ||
 670                 (drv->advise_release == NULL))
 671                 return -EINVAL;
 672
 673         return 0;
 674 }
 675
 676 int cx8802_register_driver(struct cx8802_driver *drv)
 677 {
 678         struct cx8802_dev *dev;
 679         struct cx8802_driver *driver;
 680         int err, i = 0;
 681
 682         printk(KERN_INFO
 683                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 684                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 685                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 686
 687         if ((err = cx8802_check_driver(drv)) != 0) {
 688                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 689                 return err;
 690         }
 691
 692         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 693                 printk(KERN_INFO
 694                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 695                        dev->core->name, dev->pci->subsystem_vendor,
 696                        dev->pci->subsystem_device, dev->core->board.name,
 697                        dev->core->boardnr);
 698
 699                 /* Bring up a new struct for each driver instance */
 700                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 701                 if (driver == NULL)
 702                         return -ENOMEM;
 703
 704                 /* Snapshot of the driver registration data */
 705                 drv->core = dev->core;
 706                 drv->suspend = cx8802_suspend_common;
 707                 drv->resume = cx8802_resume_common;
 708                 drv->request_acquire = cx8802_request_acquire;
 709                 drv->request_release = cx8802_request_release;
 710                 memcpy(driver, drv, sizeof(*driver));
 711
 712                 err = drv->probe(driver);
 713                 if (err == 0) {
 714                         i++;
 715                         mutex_lock(&drv->core->lock);
 716                         list_add_tail(&driver->drvlist, &dev->drvlist);
 717                         mutex_unlock(&drv->core->lock);
 718                 } else {
 719                         printk(KERN_ERR
 720                                "%s/2: cx8802 probe failed, err = %d\n",
 721                                dev->core->name, err);
 722                 }
 723
 724         }
 725
 726         return i ? 0 : -ENODEV;
 727 }
 728
 729 int cx8802_unregister_driver(struct cx8802_driver *drv)
 730 {
 731         struct cx8802_dev *dev;
 732         struct cx8802_driver *d, *dtmp;
 733         int err = 0;
 734
 735         printk(KERN_INFO
 736                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 737                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 738                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 739
 740         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 741                 printk(KERN_INFO
 742                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 743                        dev->core->name, dev->pci->subsystem_vendor,
 744                        dev->pci->subsystem_device, dev->core->board.name,
 745                        dev->core->boardnr);
 746
 747                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
 748                         /* only unregister the correct driver type */
 749                         if (d->type_id != drv->type_id)
 750                                 continue;
 751
 752                         err = d->remove(d);
 753                         if (err == 0) {
 754                                 mutex_lock(&drv->core->lock);
 755                                 list_del(&d->drvlist);
 756                                 mutex_unlock(&drv->core->lock);
 757                                 kfree(d);
 758                         } else
 759                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 760                                        "failed (%d)\n", dev->core->name, err);
 761                 }
 762
 763         }
 764
 765         return err;
 766 }
 767
 768 /* ----------------------------------------------------------- */
 769 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 770                                const struct pci_device_id *pci_id)
 771 {
 772         struct cx8802_dev *dev;
 773         struct cx88_core  *core;
 774         int err;
 775
 776         /* general setup */
 777         core = cx88_core_get(pci_dev);
 778         if (NULL == core)
 779                 return -EINVAL;
 780
 781         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 782
 783         err = -ENODEV;
 784         if (!core->board.mpeg)
 785                 goto fail_core;
 786
 787         err = -ENOMEM;
 788         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 789         if (NULL == dev)
 790                 goto fail_core;
 791         dev->pci = pci_dev;
 792         dev->core = core;
 793
 794         /* Maintain a reference so cx88-video can query the 8802 device. */
 795         core->dvbdev = dev;
 796
 797         err = cx8802_init_common(dev);
 798         if (err != 0)
 799                 goto fail_free;
 800
 801         INIT_LIST_HEAD(&dev->drvlist);
 802         list_add_tail(&dev->devlist,&cx8802_devlist);
 803
 804         /* now autoload cx88-dvb or cx88-blackbird */
 805         request_modules(dev);
 806         return 0;
 807
 808  fail_free:
 809         kfree(dev);
 810  fail_core:
 811         core->dvbdev = NULL;
 812         cx88_core_put(core,pci_dev);
 813         return err;
 814 }
 815
 816 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 817 {
 818         struct cx8802_dev *dev;
 819
 820         dev = pci_get_drvdata(pci_dev);
 821
 822         dprintk( 1, "%s\n", __func__);
 823
 824         if (!list_empty(&dev->drvlist)) {
 825                 struct cx8802_driver *drv, *tmp;
 826                 int err;
 827
 828                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
 829                        "while cx8802 sub-drivers still loaded?!\n",
 830                        dev->core->name);
 831
 832                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
 833                         err = drv->remove(drv);
 834                         if (err == 0) {
 835                                 mutex_lock(&drv->core->lock);
 836                                 list_del(&drv->drvlist);
 837                                 mutex_unlock(&drv->core->lock);
 838                         } else
 839                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 840                                        "failed (%d)\n", dev->core->name, err);
 841                         kfree(drv);
 842                 }
 843         }
 844
 845         /* Destroy any 8802 reference. */
 846         dev->core->dvbdev = NULL;
 847
 848         /* common */
 849         cx8802_fini_common(dev);
 850         cx88_core_put(dev->core,dev->pci);
 851         kfree(dev);
 852 }
 853
 854 static struct pci_device_id cx8802_pci_tbl[] = {
 855         {
 856                 .vendor       = 0x14f1,
 857                 .device       = 0x8802,
 858                 .subvendor    = PCI_ANY_ID,
 859                 .subdevice    = PCI_ANY_ID,
 860         },{
 861                 /* --- end of list --- */
 862         }
 863 };
 864 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 865
 866 static struct pci_driver cx8802_pci_driver = {
 867         .name     = "cx88-mpeg driver manager",
 868         .id_table = cx8802_pci_tbl,
 869         .probe    = cx8802_probe,
 870         .remove   = __devexit_p(cx8802_remove),
 871 };
 872
 873 static int cx8802_init(void)
 874 {
 875         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
 876                (CX88_VERSION_CODE >> 16) & 0xff,
 877                (CX88_VERSION_CODE >>  8) & 0xff,
 878                CX88_VERSION_CODE & 0xff);
 879 #ifdef SNAPSHOT
 880         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 881                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 882 #endif
 883         return pci_register_driver(&cx8802_pci_driver);
 884 }
 885
 886 static void cx8802_fini(void)
 887 {
 888         pci_unregister_driver(&cx8802_pci_driver);
 889 }
 890
 891 module_init(cx8802_init);
 892 module_exit(cx8802_fini);
 893 EXPORT_SYMBOL(cx8802_buf_prepare);
 894 EXPORT_SYMBOL(cx8802_buf_queue);
 895 EXPORT_SYMBOL(cx8802_cancel_buffers);
 896
 897 EXPORT_SYMBOL(cx8802_register_driver);
 898 EXPORT_SYMBOL(cx8802_unregister_driver);
 899 EXPORT_SYMBOL(cx8802_get_driver);
 900 /* ----------------------------------------------------------- */
 901 /*
 902  * Local variables:
 903  * c-basic-offset: 8
 904  * End:
 905  * 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
 906  */