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/moduleparam.h>
  27 #include <linux/init.h>
  28 #include <linux/device.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 static LIST_HEAD(cx8802_devlist);
  53 /* ------------------------------------------------------------------ */
  54
  55 static int cx8802_start_dma(struct cx8802_dev    *dev,
  56                             struct cx88_dmaqueue *q,
  57                             struct cx88_buffer   *buf)
  58 {
  59         struct cx88_core *core = dev->core;
  60
  61         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n", dev->width, dev->height, buf->vb.field);
  62
  63         /* setup fifo + format */
  64         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  65                                 dev->ts_packet_size, buf->risc.dma);
  66
  67         /* write TS length to chip */
  68         cx_write(MO_TS_LNGTH, buf->vb.width);
  69
  70         /* FIXME: this needs a review.
  71          * also: move to cx88-blackbird + cx88-dvb source files? */
  72
  73         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
  74
  75         if ( (core->active_type_id == CX88_MPEG_DVB) &&
  76                 (cx88_boards[core->board].mpeg & CX88_MPEG_DVB) ) {
  77
  78                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
  79                 /* negedge driven & software reset */
  80                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
  81                 udelay(100);
  82                 cx_write(MO_PINMUX_IO, 0x00);
  83                 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
  84                 switch (core->board) {
  85                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
  86                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
  87                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
  88                 case CX88_BOARD_PCHDTV_HD5500:
  89                         cx_write(TS_SOP_STAT, 1<<13);
  90                         break;
  91                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
  92                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
  93                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
  94                         udelay(100);
  95                         break;
  96                 case CX88_BOARD_HAUPPAUGE_HVR1300:
  97                         break;
  98                 default:
  99                         cx_write(TS_SOP_STAT, 0x00);
 100                         break;
 101                 }
 102                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 103                 udelay(100);
 104         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 105                 (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) ) {
 106                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 107                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 108
 109                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 110                 udelay(100);
 111
 112                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 113                 cx_write(TS_VALERR_CNTRL, 0x2000);
 114
 115                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 116                 udelay(100);
 117         } else {
 118                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
 119                         cx88_boards[core->board].mpeg );
 120                 return -EINVAL;
 121         }
 122
 123         /* reset counter */
 124         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 125         q->count = 1;
 126
 127         /* enable irqs */
 128         dprintk( 1, "setting the interrupt mask\n" );
 129         cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
 130         cx_set(MO_TS_INTMSK,  0x1f0011);
 131
 132         /* start dma */
 133         cx_set(MO_DEV_CNTRL2, (1<<5));
 134         cx_set(MO_TS_DMACNTRL, 0x11);
 135         return 0;
 136 }
 137
 138 static int cx8802_stop_dma(struct cx8802_dev *dev)
 139 {
 140         struct cx88_core *core = dev->core;
 141         dprintk( 1, "cx8802_stop_dma\n" );
 142
 143         /* stop dma */
 144         cx_clear(MO_TS_DMACNTRL, 0x11);
 145
 146         /* disable irqs */
 147         cx_clear(MO_PCI_INTMSK, 0x000004);
 148         cx_clear(MO_TS_INTMSK, 0x1f0011);
 149
 150         /* Reset the controller */
 151         cx_write(TS_GEN_CNTRL, 0xcd);
 152         return 0;
 153 }
 154
 155 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 156                                 struct cx88_dmaqueue *q)
 157 {
 158         struct cx88_buffer *buf;
 159         struct list_head *item;
 160
 161        dprintk( 1, "cx8802_restart_queue\n" );
 162         if (list_empty(&q->active))
 163         {
 164                struct cx88_buffer *prev;
 165                prev = NULL;
 166
 167                dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 168
 169                for (;;) {
 170                        if (list_empty(&q->queued))
 171                                return 0;
 172                        buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 173                        if (NULL == prev) {
 174                                list_del(&buf->vb.queue);
 175                                list_add_tail(&buf->vb.queue,&q->active);
 176                                cx8802_start_dma(dev, q, buf);
 177                                buf->vb.state = STATE_ACTIVE;
 178                                buf->count    = q->count++;
 179                                mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 180                                dprintk(1,"[%p/%d] restart_queue - first active\n",
 181                                        buf,buf->vb.i);
 182
 183                        } else if (prev->vb.width  == buf->vb.width  &&
 184                                   prev->vb.height == buf->vb.height &&
 185                                   prev->fmt       == buf->fmt) {
 186                                list_del(&buf->vb.queue);
 187                                list_add_tail(&buf->vb.queue,&q->active);
 188                                buf->vb.state = STATE_ACTIVE;
 189                                buf->count    = q->count++;
 190                                prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 191                                dprintk(1,"[%p/%d] restart_queue - move to active\n",
 192                                        buf,buf->vb.i);
 193                        } else {
 194                                return 0;
 195                        }
 196                        prev = buf;
 197                }
 198                 return 0;
 199         }
 200
 201         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 202         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 203                 buf, buf->vb.i);
 204         cx8802_start_dma(dev, q, buf);
 205         list_for_each(item,&q->active) {
 206                 buf = list_entry(item, struct cx88_buffer, vb.queue);
 207                 buf->count = q->count++;
 208         }
 209         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 210         return 0;
 211 }
 212
 213 /* ------------------------------------------------------------------ */
 214
 215 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 216                         struct cx88_buffer *buf, enum v4l2_field field)
 217 {
 218         int size = dev->ts_packet_size * dev->ts_packet_count;
 219         int rc;
 220
 221         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
 222         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 223                 return -EINVAL;
 224
 225         if (STATE_NEEDS_INIT == buf->vb.state) {
 226                 buf->vb.width  = dev->ts_packet_size;
 227                 buf->vb.height = dev->ts_packet_count;
 228                 buf->vb.size   = size;
 229                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 230
 231                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 232                         goto fail;
 233                 cx88_risc_databuffer(dev->pci, &buf->risc,
 234                                      buf->vb.dma.sglist,
 235                                      buf->vb.width, buf->vb.height);
 236         }
 237         buf->vb.state = STATE_PREPARED;
 238         return 0;
 239
 240  fail:
 241         cx88_free_buffer(q,buf);
 242         return rc;
 243 }
 244
 245 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 246 {
 247         struct cx88_buffer    *prev;
 248         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 249
 250         dprintk( 1, "cx8802_buf_queue\n" );
 251         /* add jump to stopper */
 252         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 253         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 254
 255         if (list_empty(&cx88q->active)) {
 256                 dprintk( 1, "queue is empty - first active\n" );
 257                 list_add_tail(&buf->vb.queue,&cx88q->active);
 258                 cx8802_start_dma(dev, cx88q, buf);
 259                 buf->vb.state = STATE_ACTIVE;
 260                 buf->count    = cx88q->count++;
 261                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 262                 dprintk(1,"[%p/%d] %s - first active\n",
 263                         buf, buf->vb.i, __FUNCTION__);
 264
 265         } else {
 266                 dprintk( 1, "queue is not empty - append to active\n" );
 267                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 268                 list_add_tail(&buf->vb.queue,&cx88q->active);
 269                 buf->vb.state = STATE_ACTIVE;
 270                 buf->count    = cx88q->count++;
 271                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 272                 dprintk( 1, "[%p/%d] %s - append to active\n",
 273                         buf, buf->vb.i, __FUNCTION__);
 274         }
 275 }
 276
 277 /* ----------------------------------------------------------- */
 278
 279 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 280 {
 281         struct cx88_dmaqueue *q = &dev->mpegq;
 282         struct cx88_buffer *buf;
 283         unsigned long flags;
 284
 285         spin_lock_irqsave(&dev->slock,flags);
 286         while (!list_empty(&q->active)) {
 287                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 288                 list_del(&buf->vb.queue);
 289                 buf->vb.state = STATE_ERROR;
 290                 wake_up(&buf->vb.done);
 291                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 292                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 293         }
 294         if (restart)
 295         {
 296                 dprintk(1, "restarting queue\n" );
 297                 cx8802_restart_queue(dev,q);
 298         }
 299         spin_unlock_irqrestore(&dev->slock,flags);
 300 }
 301
 302 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 303 {
 304         struct cx88_dmaqueue *q = &dev->mpegq;
 305
 306         dprintk( 1, "cx8802_cancel_buffers" );
 307         del_timer_sync(&q->timeout);
 308         cx8802_stop_dma(dev);
 309         do_cancel_buffers(dev,"cancel",0);
 310 }
 311
 312 static void cx8802_timeout(unsigned long data)
 313 {
 314         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 315
 316         dprintk(0, "%s\n",__FUNCTION__);
 317
 318         if (debug)
 319                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 320         cx8802_stop_dma(dev);
 321         do_cancel_buffers(dev,"timeout",1);
 322 }
 323
 324 static char *cx88_mpeg_irqs[32] = {
 325         "ts_risci1", NULL, NULL, NULL,
 326         "ts_risci2", NULL, NULL, NULL,
 327         "ts_oflow",  NULL, NULL, NULL,
 328         "ts_sync",   NULL, NULL, NULL,
 329         "opc_err", "par_err", "rip_err", "pci_abort",
 330         "ts_err?",
 331 };
 332
 333 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 334 {
 335         struct cx88_core *core = dev->core;
 336         u32 status, mask, count;
 337
 338         dprintk( 1, "cx8802_mpeg_irq\n" );
 339         status = cx_read(MO_TS_INTSTAT);
 340         mask   = cx_read(MO_TS_INTMSK);
 341         if (0 == (status & mask))
 342                 return;
 343
 344         cx_write(MO_TS_INTSTAT, status);
 345
 346         if (debug || (status & mask & ~0xff))
 347                 cx88_print_irqbits(core->name, "irq mpeg ",
 348                                    cx88_mpeg_irqs, status, mask);
 349
 350         /* risc op code error */
 351         if (status & (1 << 16)) {
 352                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 353                 cx_clear(MO_TS_DMACNTRL, 0x11);
 354                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 355         }
 356
 357         /* risc1 y */
 358         if (status & 0x01) {
 359                 dprintk( 1, "wake up\n" );
 360                 spin_lock(&dev->slock);
 361                 count = cx_read(MO_TS_GPCNT);
 362                 cx88_wakeup(dev->core, &dev->mpegq, count);
 363                 spin_unlock(&dev->slock);
 364         }
 365
 366         /* risc2 y */
 367         if (status & 0x10) {
 368                 spin_lock(&dev->slock);
 369                 cx8802_restart_queue(dev,&dev->mpegq);
 370                 spin_unlock(&dev->slock);
 371         }
 372
 373         /* other general errors */
 374         if (status & 0x1f0100) {
 375                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 376                 spin_lock(&dev->slock);
 377                 cx8802_stop_dma(dev);
 378                 cx8802_restart_queue(dev,&dev->mpegq);
 379                 spin_unlock(&dev->slock);
 380         }
 381 }
 382
 383 #define MAX_IRQ_LOOP 10
 384
 385 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 386 {
 387         struct cx8802_dev *dev = dev_id;
 388         struct cx88_core *core = dev->core;
 389         u32 status;
 390         int loop, handled = 0;
 391
 392         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 393                 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
 394                 if (0 == status)
 395                         goto out;
 396                 dprintk( 1, "cx8802_irq\n" );
 397                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 398                 dprintk( 1, "    status: %d\n", status );
 399                 handled = 1;
 400                 cx_write(MO_PCI_INTSTAT, status);
 401
 402                 if (status & core->pci_irqmask)
 403                         cx88_core_irq(core,status);
 404                 if (status & 0x04)
 405                         cx8802_mpeg_irq(dev);
 406         };
 407         if (MAX_IRQ_LOOP == loop) {
 408                 dprintk( 0, "clearing mask\n" );
 409                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 410                        core->name);
 411                 cx_write(MO_PCI_INTMSK,0);
 412         }
 413
 414  out:
 415         return IRQ_RETVAL(handled);
 416 }
 417
 418 /* ----------------------------------------------------------- */
 419 /* exported stuff                                              */
 420
 421 int cx8802_init_common(struct cx8802_dev *dev)
 422 {
 423         struct cx88_core *core = dev->core;
 424         int err;
 425
 426         /* pci init */
 427         if (pci_enable_device(dev->pci))
 428                 return -EIO;
 429         pci_set_master(dev->pci);
 430         if (!pci_dma_supported(dev->pci,0xffffffff)) {
 431                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 432                 return -EIO;
 433         }
 434
 435         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 436         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 437         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 438                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 439                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 440                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 441
 442         /* initialize driver struct */
 443         spin_lock_init(&dev->slock);
 444
 445         /* init dma queue */
 446         INIT_LIST_HEAD(&dev->mpegq.active);
 447         INIT_LIST_HEAD(&dev->mpegq.queued);
 448         dev->mpegq.timeout.function = cx8802_timeout;
 449         dev->mpegq.timeout.data     = (unsigned long)dev;
 450         init_timer(&dev->mpegq.timeout);
 451         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 452                           MO_TS_DMACNTRL,0x11,0x00);
 453
 454         /* get irq */
 455         err = request_irq(dev->pci->irq, cx8802_irq,
 456                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 457         if (err < 0) {
 458                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 459                        dev->core->name, dev->pci->irq);
 460                 return err;
 461         }
 462         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 463
 464         /* everything worked */
 465         pci_set_drvdata(dev->pci,dev);
 466         return 0;
 467 }
 468
 469 void cx8802_fini_common(struct cx8802_dev *dev)
 470 {
 471         dprintk( 2, "cx8802_fini_common\n" );
 472         cx8802_stop_dma(dev);
 473         pci_disable_device(dev->pci);
 474
 475         /* unregister stuff */
 476         free_irq(dev->pci->irq, dev);
 477         pci_set_drvdata(dev->pci, NULL);
 478
 479         /* free memory */
 480         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 481 }
 482
 483 /* ----------------------------------------------------------- */
 484
 485 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 486 {
 487         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 488         struct cx88_core *core = dev->core;
 489
 490         /* stop mpeg dma */
 491         spin_lock(&dev->slock);
 492         if (!list_empty(&dev->mpegq.active)) {
 493                 dprintk( 2, "suspend\n" );
 494                 printk("%s: suspend mpeg\n", core->name);
 495                 cx8802_stop_dma(dev);
 496                 del_timer(&dev->mpegq.timeout);
 497         }
 498         spin_unlock(&dev->slock);
 499
 500         /* FIXME -- shutdown device */
 501         cx88_shutdown(dev->core);
 502
 503         pci_save_state(pci_dev);
 504         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 505                 pci_disable_device(pci_dev);
 506                 dev->state.disabled = 1;
 507         }
 508         return 0;
 509 }
 510
 511 int cx8802_resume_common(struct pci_dev *pci_dev)
 512 {
 513         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 514         struct cx88_core *core = dev->core;
 515         int err;
 516
 517         if (dev->state.disabled) {
 518                 err=pci_enable_device(pci_dev);
 519                 if (err) {
 520                         printk(KERN_ERR "%s: can't enable device\n",
 521                                                dev->core->name);
 522                         return err;
 523                 }
 524                 dev->state.disabled = 0;
 525         }
 526         err=pci_set_power_state(pci_dev, PCI_D0);
 527         if (err) {
 528                 printk(KERN_ERR "%s: can't enable device\n",
 529                                                dev->core->name);
 530                 pci_disable_device(pci_dev);
 531                 dev->state.disabled = 1;
 532
 533                 return err;
 534         }
 535         pci_restore_state(pci_dev);
 536
 537         /* FIXME: re-initialize hardware */
 538         cx88_reset(dev->core);
 539
 540         /* restart video+vbi capture */
 541         spin_lock(&dev->slock);
 542         if (!list_empty(&dev->mpegq.active)) {
 543                 printk("%s: resume mpeg\n", core->name);
 544                 cx8802_restart_queue(dev,&dev->mpegq);
 545         }
 546         spin_unlock(&dev->slock);
 547
 548         return 0;
 549 }
 550
 551 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 552 {
 553         int minor = iminor(inode);
 554         struct cx8802_dev *h = NULL;
 555         struct list_head *list;
 556
 557         list_for_each(list,&cx8802_devlist) {
 558                 h = list_entry(list, struct cx8802_dev, devlist);
 559                 if (h->mpeg_dev->minor == minor)
 560                         return h;
 561         }
 562
 563         return NULL;
 564 }
 565
 566 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 567 {
 568         struct cx8802_dev *h = NULL;
 569         struct cx8802_driver *d = NULL;
 570         struct list_head *list;
 571         struct list_head *list2;
 572
 573         list_for_each(list,&cx8802_devlist) {
 574                 h = list_entry(list, struct cx8802_dev, devlist);
 575                 if (h != dev)
 576                         continue;
 577
 578                 list_for_each(list2, &h->drvlist.devlist) {
 579                         d = list_entry(list2, struct cx8802_driver, devlist);
 580
 581                         /* only unregister the correct driver type */
 582                         if (d->type_id == btype) {
 583                                 return d;
 584                         }
 585                 }
 586         }
 587
 588         return NULL;
 589 }
 590
 591 /* Driver asked for hardware access. */
 592 int cx8802_request_acquire(struct cx8802_driver *drv)
 593 {
 594         struct cx88_core *core = drv->core;
 595
 596         /* Fail a request for hardware if the device is busy. */
 597         if (core->active_type_id != CX88_BOARD_NONE)
 598                 return -EBUSY;
 599
 600         if (drv->advise_acquire)
 601         {
 602                 core->active_type_id = drv->type_id;
 603                 drv->advise_acquire(drv);
 604
 605                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 606         }
 607
 608         return 0;
 609 }
 610
 611 /* Driver asked to release hardware. */
 612 int cx8802_request_release(struct cx8802_driver *drv)
 613 {
 614         struct cx88_core *core = drv->core;
 615
 616         if (drv->advise_release)
 617         {
 618                 drv->advise_release(drv);
 619                 core->active_type_id = CX88_BOARD_NONE;
 620                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 621         }
 622
 623         return 0;
 624 }
 625
 626 static int cx8802_check_driver(struct cx8802_driver *drv)
 627 {
 628         if (drv == NULL)
 629                 return -ENODEV;
 630
 631         if ((drv->type_id != CX88_MPEG_DVB) &&
 632                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 633                 return -EINVAL;
 634
 635         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 636                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 637                 return -EINVAL;
 638
 639         if ((drv->probe == NULL) ||
 640                 (drv->remove == NULL) ||
 641                 (drv->advise_acquire == NULL) ||
 642                 (drv->advise_release == NULL))
 643                 return -EINVAL;
 644
 645         return 0;
 646 }
 647
 648 int cx8802_register_driver(struct cx8802_driver *drv)
 649 {
 650         struct cx8802_dev *h;
 651         struct cx8802_driver *driver;
 652         struct list_head *list;
 653         int err = 0, i = 0;
 654
 655         printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
 656                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 657                 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 658
 659         if ((err = cx8802_check_driver(drv)) != 0) {
 660                 printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
 661                 return err;
 662         }
 663
 664         list_for_each(list,&cx8802_devlist) {
 665                 h = list_entry(list, struct cx8802_dev, devlist);
 666
 667                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 668                         h->core->name,h->pci->subsystem_vendor,
 669                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 670                         h->core->board);
 671
 672                 /* Bring up a new struct for each driver instance */
 673                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 674                 if (driver == NULL)
 675                         return -ENOMEM;
 676
 677                 /* Snapshot of the driver registration data */
 678                 drv->core = h->core;
 679                 drv->suspend = cx8802_suspend_common;
 680                 drv->resume = cx8802_resume_common;
 681                 drv->request_acquire = cx8802_request_acquire;
 682                 drv->request_release = cx8802_request_release;
 683                 memcpy(driver, drv, sizeof(*driver));
 684
 685                 err = drv->probe(driver);
 686                 if (err == 0) {
 687                         i++;
 688                         mutex_lock(&drv->core->lock);
 689                         list_add_tail(&driver->devlist,&h->drvlist.devlist);
 690                         mutex_unlock(&drv->core->lock);
 691                 } else {
 692                         printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
 693                 }
 694
 695         }
 696         if (i == 0)
 697                 err = -ENODEV;
 698         else
 699                 err = 0;
 700
 701         return err;
 702 }
 703
 704 int cx8802_unregister_driver(struct cx8802_driver *drv)
 705 {
 706         struct cx8802_dev *h;
 707         struct cx8802_driver *d;
 708         struct list_head *list;
 709         struct list_head *list2, *q;
 710         int err = 0, i = 0;
 711
 712         printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
 713                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");
 714
 715         list_for_each(list,&cx8802_devlist) {
 716                 i++;
 717                 h = list_entry(list, struct cx8802_dev, devlist);
 718
 719                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 720                         h->core->name,h->pci->subsystem_vendor,
 721                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 722                         h->core->board);
 723
 724                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
 725                         d = list_entry(list2, struct cx8802_driver, devlist);
 726
 727                         /* only unregister the correct driver type */
 728                         if (d->type_id != drv->type_id)
 729                                 continue;
 730
 731                         err = d->remove(d);
 732                         if (err == 0) {
 733                                 mutex_lock(&drv->core->lock);
 734                                 list_del(list2);
 735                                 mutex_unlock(&drv->core->lock);
 736                         } else
 737                                 printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);
 738
 739                 }
 740
 741         }
 742
 743         return err;
 744 }
 745
 746 /* ----------------------------------------------------------- */
 747 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 748                                const struct pci_device_id *pci_id)
 749 {
 750         struct cx8802_dev *dev;
 751         struct cx88_core  *core;
 752         int err;
 753
 754         /* general setup */
 755         core = cx88_core_get(pci_dev);
 756         if (NULL == core)
 757                 return -EINVAL;
 758
 759         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 760
 761         err = -ENODEV;
 762         if (!cx88_boards[core->board].mpeg)
 763                 goto fail_core;
 764
 765         err = -ENOMEM;
 766         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 767         if (NULL == dev)
 768                 goto fail_core;
 769         dev->pci = pci_dev;
 770         dev->core = core;
 771
 772         err = cx8802_init_common(dev);
 773         if (err != 0)
 774                 goto fail_free;
 775
 776         INIT_LIST_HEAD(&dev->drvlist.devlist);
 777         list_add_tail(&dev->devlist,&cx8802_devlist);
 778
 779         /* Maintain a reference so cx88-video can query the 8802 device. */
 780         core->dvbdev = dev;
 781         return 0;
 782
 783  fail_free:
 784         kfree(dev);
 785  fail_core:
 786         cx88_core_put(core,pci_dev);
 787         return err;
 788 }
 789
 790 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 791 {
 792         struct cx8802_dev *dev;
 793         struct cx8802_driver *h;
 794         struct list_head *list;
 795
 796         dev = pci_get_drvdata(pci_dev);
 797
 798         dprintk( 1, "%s\n", __FUNCTION__);
 799
 800         list_for_each(list,&dev->drvlist.devlist) {
 801                 h = list_entry(list, struct cx8802_driver, devlist);
 802                 dprintk( 1, " ->driver\n");
 803                 if (h->remove == NULL) {
 804                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
 805                         continue;
 806                 }
 807                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
 808                 cx8802_unregister_driver(h);
 809                 list_del(&dev->drvlist.devlist);
 810         }
 811
 812         /* Destroy any 8802 reference. */
 813         dev->core->dvbdev = NULL;
 814
 815         /* common */
 816         cx8802_fini_common(dev);
 817         cx88_core_put(dev->core,dev->pci);
 818         kfree(dev);
 819 }
 820
 821 static struct pci_device_id cx8802_pci_tbl[] = {
 822         {
 823                 .vendor       = 0x14f1,
 824                 .device       = 0x8802,
 825                 .subvendor    = PCI_ANY_ID,
 826                 .subdevice    = PCI_ANY_ID,
 827         },{
 828                 /* --- end of list --- */
 829         }
 830 };
 831 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 832
 833 static struct pci_driver cx8802_pci_driver = {
 834         .name     = "cx88-mpeg driver manager",
 835         .id_table = cx8802_pci_tbl,
 836         .probe    = cx8802_probe,
 837         .remove   = __devexit_p(cx8802_remove),
 838 };
 839
 840 static int cx8802_init(void)
 841 {
 842         printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
 843                (CX88_VERSION_CODE >> 16) & 0xff,
 844                (CX88_VERSION_CODE >>  8) & 0xff,
 845                CX88_VERSION_CODE & 0xff);
 846 #ifdef SNAPSHOT
 847         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 848                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 849 #endif
 850         return pci_register_driver(&cx8802_pci_driver);
 851 }
 852
 853 static void cx8802_fini(void)
 854 {
 855         pci_unregister_driver(&cx8802_pci_driver);
 856 }
 857
 858 module_init(cx8802_init);
 859 module_exit(cx8802_fini);
 860 EXPORT_SYMBOL(cx8802_buf_prepare);
 861 EXPORT_SYMBOL(cx8802_buf_queue);
 862 EXPORT_SYMBOL(cx8802_cancel_buffers);
 863
 864 EXPORT_SYMBOL(cx8802_init_common);
 865 EXPORT_SYMBOL(cx8802_fini_common);
 866
 867 EXPORT_SYMBOL(cx8802_register_driver);
 868 EXPORT_SYMBOL(cx8802_unregister_driver);
 869 EXPORT_SYMBOL(cx8802_get_device);
 870 EXPORT_SYMBOL(cx8802_get_driver);
 871 /* ----------------------------------------------------------- */
 872 /*
 873  * Local variables:
 874  * c-basic-offset: 8
 875  * End:
 876  * 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
 877  */