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_SAMSUNG_SMT_7020:
 114                         cx_write(TS_SOP_STAT, 0x00);
 115                         break;
 116                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 117                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 118                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 119                         udelay(100);
 120                         break;
 121                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 122                         /* Enable MPEG parallel IO and video signal pins */
 123                         cx_write(MO_PINMUX_IO, 0x88);
 124                         cx_write(TS_SOP_STAT, 0);
 125                         cx_write(TS_VALERR_CNTRL, 0);
 126                         break;
 127                 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 128                         /* Enable MPEG parallel IO and video signal pins */
 129                         cx_write(MO_PINMUX_IO, 0x88);
 130                         cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
 131                         dev->ts_gen_cntrl = 5;
 132                         cx_write(TS_SOP_STAT, 0);
 133                         cx_write(TS_VALERR_CNTRL, 0);
 134                         udelay(100);
 135                         break;
 136                 default:
 137                         cx_write(TS_SOP_STAT, 0x00);
 138                         break;
 139                 }
 140                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 141                 udelay(100);
 142         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 143                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 144                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 145                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 146
 147                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 148                 udelay(100);
 149
 150                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 151                 cx_write(TS_VALERR_CNTRL, 0x2000);
 152
 153                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 154                 udelay(100);
 155         } else {
 156                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
 157                         core->board.mpeg );
 158                 return -EINVAL;
 159         }
 160
 161         /* reset counter */
 162         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 163         q->count = 1;
 164
 165         /* enable irqs */
 166         dprintk( 1, "setting the interrupt mask\n" );
 167         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 168         cx_set(MO_TS_INTMSK,  0x1f0011);
 169
 170         /* start dma */
 171         cx_set(MO_DEV_CNTRL2, (1<<5));
 172         cx_set(MO_TS_DMACNTRL, 0x11);
 173         return 0;
 174 }
 175
 176 static int cx8802_stop_dma(struct cx8802_dev *dev)
 177 {
 178         struct cx88_core *core = dev->core;
 179         dprintk( 1, "cx8802_stop_dma\n" );
 180
 181         /* stop dma */
 182         cx_clear(MO_TS_DMACNTRL, 0x11);
 183
 184         /* disable irqs */
 185         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 186         cx_clear(MO_TS_INTMSK, 0x1f0011);
 187
 188         /* Reset the controller */
 189         cx_write(TS_GEN_CNTRL, 0xcd);
 190         return 0;
 191 }
 192
 193 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 194                                 struct cx88_dmaqueue *q)
 195 {
 196         struct cx88_buffer *buf;
 197
 198         dprintk( 1, "cx8802_restart_queue\n" );
 199         if (list_empty(&q->active))
 200         {
 201                 struct cx88_buffer *prev;
 202                 prev = NULL;
 203
 204                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 205
 206                 for (;;) {
 207                         if (list_empty(&q->queued))
 208                                 return 0;
 209                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 210                         if (NULL == prev) {
 211                                 list_del(&buf->vb.queue);
 212                                 list_add_tail(&buf->vb.queue,&q->active);
 213                                 cx8802_start_dma(dev, q, buf);
 214                                 buf->vb.state = VIDEOBUF_ACTIVE;
 215                                 buf->count    = q->count++;
 216                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 217                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 218                                         buf,buf->vb.i);
 219
 220                         } else if (prev->vb.width  == buf->vb.width  &&
 221                                    prev->vb.height == buf->vb.height &&
 222                                    prev->fmt       == buf->fmt) {
 223                                 list_del(&buf->vb.queue);
 224                                 list_add_tail(&buf->vb.queue,&q->active);
 225                                 buf->vb.state = VIDEOBUF_ACTIVE;
 226                                 buf->count    = q->count++;
 227                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 228                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 229                                         buf,buf->vb.i);
 230                         } else {
 231                                 return 0;
 232                         }
 233                         prev = buf;
 234                 }
 235                 return 0;
 236         }
 237
 238         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 239         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 240                 buf, buf->vb.i);
 241         cx8802_start_dma(dev, q, buf);
 242         list_for_each_entry(buf, &q->active, vb.queue)
 243                 buf->count = q->count++;
 244         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 245         return 0;
 246 }
 247
 248 /* ------------------------------------------------------------------ */
 249
 250 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 251                         struct cx88_buffer *buf, enum v4l2_field field)
 252 {
 253         int size = dev->ts_packet_size * dev->ts_packet_count;
 254         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 255         int rc;
 256
 257         dprintk(1, "%s: %p\n", __func__, buf);
 258         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 259                 return -EINVAL;
 260
 261         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 262                 buf->vb.width  = dev->ts_packet_size;
 263                 buf->vb.height = dev->ts_packet_count;
 264                 buf->vb.size   = size;
 265                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 266
 267                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 268                         goto fail;
 269                 cx88_risc_databuffer(dev->pci, &buf->risc,
 270                                      dma->sglist,
 271                                      buf->vb.width, buf->vb.height, 0);
 272         }
 273         buf->vb.state = VIDEOBUF_PREPARED;
 274         return 0;
 275
 276  fail:
 277         cx88_free_buffer(q,buf);
 278         return rc;
 279 }
 280
 281 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 282 {
 283         struct cx88_buffer    *prev;
 284         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 285
 286         dprintk( 1, "cx8802_buf_queue\n" );
 287         /* add jump to stopper */
 288         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 289         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 290
 291         if (list_empty(&cx88q->active)) {
 292                 dprintk( 1, "queue is empty - first active\n" );
 293                 list_add_tail(&buf->vb.queue,&cx88q->active);
 294                 cx8802_start_dma(dev, cx88q, buf);
 295                 buf->vb.state = VIDEOBUF_ACTIVE;
 296                 buf->count    = cx88q->count++;
 297                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 298                 dprintk(1,"[%p/%d] %s - first active\n",
 299                         buf, buf->vb.i, __func__);
 300
 301         } else {
 302                 dprintk( 1, "queue is not empty - append to active\n" );
 303                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 304                 list_add_tail(&buf->vb.queue,&cx88q->active);
 305                 buf->vb.state = VIDEOBUF_ACTIVE;
 306                 buf->count    = cx88q->count++;
 307                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 308                 dprintk( 1, "[%p/%d] %s - append to active\n",
 309                         buf, buf->vb.i, __func__);
 310         }
 311 }
 312
 313 /* ----------------------------------------------------------- */
 314
 315 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 316 {
 317         struct cx88_dmaqueue *q = &dev->mpegq;
 318         struct cx88_buffer *buf;
 319         unsigned long flags;
 320
 321         spin_lock_irqsave(&dev->slock,flags);
 322         while (!list_empty(&q->active)) {
 323                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 324                 list_del(&buf->vb.queue);
 325                 buf->vb.state = VIDEOBUF_ERROR;
 326                 wake_up(&buf->vb.done);
 327                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 328                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 329         }
 330         if (restart)
 331         {
 332                 dprintk(1, "restarting queue\n" );
 333                 cx8802_restart_queue(dev,q);
 334         }
 335         spin_unlock_irqrestore(&dev->slock,flags);
 336 }
 337
 338 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 339 {
 340         struct cx88_dmaqueue *q = &dev->mpegq;
 341
 342         dprintk( 1, "cx8802_cancel_buffers" );
 343         del_timer_sync(&q->timeout);
 344         cx8802_stop_dma(dev);
 345         do_cancel_buffers(dev,"cancel",0);
 346 }
 347
 348 static void cx8802_timeout(unsigned long data)
 349 {
 350         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 351
 352         dprintk(1, "%s\n",__func__);
 353
 354         if (debug)
 355                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 356         cx8802_stop_dma(dev);
 357         do_cancel_buffers(dev,"timeout",1);
 358 }
 359
 360 static char *cx88_mpeg_irqs[32] = {
 361         "ts_risci1", NULL, NULL, NULL,
 362         "ts_risci2", NULL, NULL, NULL,
 363         "ts_oflow",  NULL, NULL, NULL,
 364         "ts_sync",   NULL, NULL, NULL,
 365         "opc_err", "par_err", "rip_err", "pci_abort",
 366         "ts_err?",
 367 };
 368
 369 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 370 {
 371         struct cx88_core *core = dev->core;
 372         u32 status, mask, count;
 373
 374         dprintk( 1, "cx8802_mpeg_irq\n" );
 375         status = cx_read(MO_TS_INTSTAT);
 376         mask   = cx_read(MO_TS_INTMSK);
 377         if (0 == (status & mask))
 378                 return;
 379
 380         cx_write(MO_TS_INTSTAT, status);
 381
 382         if (debug || (status & mask & ~0xff))
 383                 cx88_print_irqbits(core->name, "irq mpeg ",
 384                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 385                                    status, mask);
 386
 387         /* risc op code error */
 388         if (status & (1 << 16)) {
 389                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 390                 cx_clear(MO_TS_DMACNTRL, 0x11);
 391                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 392         }
 393
 394         /* risc1 y */
 395         if (status & 0x01) {
 396                 dprintk( 1, "wake up\n" );
 397                 spin_lock(&dev->slock);
 398                 count = cx_read(MO_TS_GPCNT);
 399                 cx88_wakeup(dev->core, &dev->mpegq, count);
 400                 spin_unlock(&dev->slock);
 401         }
 402
 403         /* risc2 y */
 404         if (status & 0x10) {
 405                 spin_lock(&dev->slock);
 406                 cx8802_restart_queue(dev,&dev->mpegq);
 407                 spin_unlock(&dev->slock);
 408         }
 409
 410         /* other general errors */
 411         if (status & 0x1f0100) {
 412                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 413                 spin_lock(&dev->slock);
 414                 cx8802_stop_dma(dev);
 415                 cx8802_restart_queue(dev,&dev->mpegq);
 416                 spin_unlock(&dev->slock);
 417         }
 418 }
 419
 420 #define MAX_IRQ_LOOP 10
 421
 422 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 423 {
 424         struct cx8802_dev *dev = dev_id;
 425         struct cx88_core *core = dev->core;
 426         u32 status;
 427         int loop, handled = 0;
 428
 429         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 430                 status = cx_read(MO_PCI_INTSTAT) &
 431                         (core->pci_irqmask | PCI_INT_TSINT);
 432                 if (0 == status)
 433                         goto out;
 434                 dprintk( 1, "cx8802_irq\n" );
 435                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 436                 dprintk( 1, "    status: %d\n", status );
 437                 handled = 1;
 438                 cx_write(MO_PCI_INTSTAT, status);
 439
 440                 if (status & core->pci_irqmask)
 441                         cx88_core_irq(core,status);
 442                 if (status & PCI_INT_TSINT)
 443                         cx8802_mpeg_irq(dev);
 444         };
 445         if (MAX_IRQ_LOOP == loop) {
 446                 dprintk( 0, "clearing mask\n" );
 447                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 448                        core->name);
 449                 cx_write(MO_PCI_INTMSK,0);
 450         }
 451
 452  out:
 453         return IRQ_RETVAL(handled);
 454 }
 455
 456 static int cx8802_init_common(struct cx8802_dev *dev)
 457 {
 458         struct cx88_core *core = dev->core;
 459         int err;
 460
 461         /* pci init */
 462         if (pci_enable_device(dev->pci))
 463                 return -EIO;
 464         pci_set_master(dev->pci);
 465         if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
 466                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 467                 return -EIO;
 468         }
 469
 470         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 471         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 472         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 473                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 474                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 475                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 476
 477         /* initialize driver struct */
 478         spin_lock_init(&dev->slock);
 479
 480         /* init dma queue */
 481         INIT_LIST_HEAD(&dev->mpegq.active);
 482         INIT_LIST_HEAD(&dev->mpegq.queued);
 483         dev->mpegq.timeout.function = cx8802_timeout;
 484         dev->mpegq.timeout.data     = (unsigned long)dev;
 485         init_timer(&dev->mpegq.timeout);
 486         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 487                           MO_TS_DMACNTRL,0x11,0x00);
 488
 489         /* get irq */
 490         err = request_irq(dev->pci->irq, cx8802_irq,
 491                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 492         if (err < 0) {
 493                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 494                        dev->core->name, dev->pci->irq);
 495                 return err;
 496         }
 497         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 498
 499         /* everything worked */
 500         pci_set_drvdata(dev->pci,dev);
 501         return 0;
 502 }
 503
 504 static void cx8802_fini_common(struct cx8802_dev *dev)
 505 {
 506         dprintk( 2, "cx8802_fini_common\n" );
 507         cx8802_stop_dma(dev);
 508         pci_disable_device(dev->pci);
 509
 510         /* unregister stuff */
 511         free_irq(dev->pci->irq, dev);
 512         pci_set_drvdata(dev->pci, NULL);
 513
 514         /* free memory */
 515         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 516 }
 517
 518 /* ----------------------------------------------------------- */
 519
 520 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 521 {
 522         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 523         struct cx88_core *core = dev->core;
 524
 525         /* stop mpeg dma */
 526         spin_lock(&dev->slock);
 527         if (!list_empty(&dev->mpegq.active)) {
 528                 dprintk( 2, "suspend\n" );
 529                 printk("%s: suspend mpeg\n", core->name);
 530                 cx8802_stop_dma(dev);
 531                 del_timer(&dev->mpegq.timeout);
 532         }
 533         spin_unlock(&dev->slock);
 534
 535         /* FIXME -- shutdown device */
 536         cx88_shutdown(dev->core);
 537
 538         pci_save_state(pci_dev);
 539         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 540                 pci_disable_device(pci_dev);
 541                 dev->state.disabled = 1;
 542         }
 543         return 0;
 544 }
 545
 546 static int cx8802_resume_common(struct pci_dev *pci_dev)
 547 {
 548         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 549         struct cx88_core *core = dev->core;
 550         int err;
 551
 552         if (dev->state.disabled) {
 553                 err=pci_enable_device(pci_dev);
 554                 if (err) {
 555                         printk(KERN_ERR "%s: can't enable device\n",
 556                                                dev->core->name);
 557                         return err;
 558                 }
 559                 dev->state.disabled = 0;
 560         }
 561         err=pci_set_power_state(pci_dev, PCI_D0);
 562         if (err) {
 563                 printk(KERN_ERR "%s: can't enable device\n",
 564                                                dev->core->name);
 565                 pci_disable_device(pci_dev);
 566                 dev->state.disabled = 1;
 567
 568                 return err;
 569         }
 570         pci_restore_state(pci_dev);
 571
 572         /* FIXME: re-initialize hardware */
 573         cx88_reset(dev->core);
 574
 575         /* restart video+vbi capture */
 576         spin_lock(&dev->slock);
 577         if (!list_empty(&dev->mpegq.active)) {
 578                 printk("%s: resume mpeg\n", core->name);
 579                 cx8802_restart_queue(dev,&dev->mpegq);
 580         }
 581         spin_unlock(&dev->slock);
 582
 583         return 0;
 584 }
 585
 586 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 587 {
 588         struct cx8802_driver *d;
 589
 590         list_for_each_entry(d, &dev->drvlist, drvlist)
 591                 if (d->type_id == btype)
 592                         return d;
 593
 594         return NULL;
 595 }
 596
 597 /* Driver asked for hardware access. */
 598 static int cx8802_request_acquire(struct cx8802_driver *drv)
 599 {
 600         struct cx88_core *core = drv->core;
 601
 602         /* Fail a request for hardware if the device is busy. */
 603         if (core->active_type_id != CX88_BOARD_NONE &&
 604             core->active_type_id != drv->type_id)
 605                 return -EBUSY;
 606
 607         core->input = CX88_VMUX_DVB;
 608
 609         if (drv->advise_acquire)
 610         {
 611                 mutex_lock(&drv->core->lock);
 612                 core->active_ref++;
 613                 if (core->active_type_id == CX88_BOARD_NONE) {
 614                         core->active_type_id = drv->type_id;
 615                         drv->advise_acquire(drv);
 616                 }
 617                 mutex_unlock(&drv->core->lock);
 618
 619                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 620         }
 621
 622         return 0;
 623 }
 624
 625 /* Driver asked to release hardware. */
 626 static int cx8802_request_release(struct cx8802_driver *drv)
 627 {
 628         struct cx88_core *core = drv->core;
 629
 630         mutex_lock(&drv->core->lock);
 631         if (drv->advise_release && --core->active_ref == 0)
 632         {
 633                 drv->advise_release(drv);
 634                 core->active_type_id = CX88_BOARD_NONE;
 635                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 636         }
 637         mutex_unlock(&drv->core->lock);
 638
 639         return 0;
 640 }
 641
 642 static int cx8802_check_driver(struct cx8802_driver *drv)
 643 {
 644         if (drv == NULL)
 645                 return -ENODEV;
 646
 647         if ((drv->type_id != CX88_MPEG_DVB) &&
 648                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 649                 return -EINVAL;
 650
 651         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 652                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 653                 return -EINVAL;
 654
 655         if ((drv->probe == NULL) ||
 656                 (drv->remove == NULL) ||
 657                 (drv->advise_acquire == NULL) ||
 658                 (drv->advise_release == NULL))
 659                 return -EINVAL;
 660
 661         return 0;
 662 }
 663
 664 int cx8802_register_driver(struct cx8802_driver *drv)
 665 {
 666         struct cx8802_dev *dev;
 667         struct cx8802_driver *driver;
 668         int err, i = 0;
 669
 670         printk(KERN_INFO
 671                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 672                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 673                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 674
 675         if ((err = cx8802_check_driver(drv)) != 0) {
 676                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 677                 return err;
 678         }
 679
 680         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 681                 printk(KERN_INFO
 682                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 683                        dev->core->name, dev->pci->subsystem_vendor,
 684                        dev->pci->subsystem_device, dev->core->board.name,
 685                        dev->core->boardnr);
 686
 687                 /* Bring up a new struct for each driver instance */
 688                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 689                 if (driver == NULL)
 690                         return -ENOMEM;
 691
 692                 /* Snapshot of the driver registration data */
 693                 drv->core = dev->core;
 694                 drv->suspend = cx8802_suspend_common;
 695                 drv->resume = cx8802_resume_common;
 696                 drv->request_acquire = cx8802_request_acquire;
 697                 drv->request_release = cx8802_request_release;
 698                 memcpy(driver, drv, sizeof(*driver));
 699
 700                 err = drv->probe(driver);
 701                 if (err == 0) {
 702                         i++;
 703                         mutex_lock(&drv->core->lock);
 704                         list_add_tail(&driver->drvlist, &dev->drvlist);
 705                         mutex_unlock(&drv->core->lock);
 706                 } else {
 707                         printk(KERN_ERR
 708                                "%s/2: cx8802 probe failed, err = %d\n",
 709                                dev->core->name, err);
 710                 }
 711
 712         }
 713
 714         return i ? 0 : -ENODEV;
 715 }
 716
 717 int cx8802_unregister_driver(struct cx8802_driver *drv)
 718 {
 719         struct cx8802_dev *dev;
 720         struct cx8802_driver *d, *dtmp;
 721         int err = 0;
 722
 723         printk(KERN_INFO
 724                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 725                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 726                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 727
 728         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 729                 printk(KERN_INFO
 730                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 731                        dev->core->name, dev->pci->subsystem_vendor,
 732                        dev->pci->subsystem_device, dev->core->board.name,
 733                        dev->core->boardnr);
 734
 735                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
 736                         /* only unregister the correct driver type */
 737                         if (d->type_id != drv->type_id)
 738                                 continue;
 739
 740                         err = d->remove(d);
 741                         if (err == 0) {
 742                                 mutex_lock(&drv->core->lock);
 743                                 list_del(&d->drvlist);
 744                                 mutex_unlock(&drv->core->lock);
 745                                 kfree(d);
 746                         } else
 747                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 748                                        "failed (%d)\n", dev->core->name, err);
 749                 }
 750
 751         }
 752
 753         return err;
 754 }
 755
 756 /* ----------------------------------------------------------- */
 757 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 758                                const struct pci_device_id *pci_id)
 759 {
 760         struct cx8802_dev *dev;
 761         struct cx88_core  *core;
 762         int err;
 763
 764         /* general setup */
 765         core = cx88_core_get(pci_dev);
 766         if (NULL == core)
 767                 return -EINVAL;
 768
 769         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 770
 771         err = -ENODEV;
 772         if (!core->board.mpeg)
 773                 goto fail_core;
 774
 775         err = -ENOMEM;
 776         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 777         if (NULL == dev)
 778                 goto fail_core;
 779         dev->pci = pci_dev;
 780         dev->core = core;
 781
 782         /* Maintain a reference so cx88-video can query the 8802 device. */
 783         core->dvbdev = dev;
 784
 785         err = cx8802_init_common(dev);
 786         if (err != 0)
 787                 goto fail_free;
 788
 789         INIT_LIST_HEAD(&dev->drvlist);
 790         list_add_tail(&dev->devlist,&cx8802_devlist);
 791
 792         /* now autoload cx88-dvb or cx88-blackbird */
 793         request_modules(dev);
 794         return 0;
 795
 796  fail_free:
 797         kfree(dev);
 798  fail_core:
 799         core->dvbdev = NULL;
 800         cx88_core_put(core,pci_dev);
 801         return err;
 802 }
 803
 804 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 805 {
 806         struct cx8802_dev *dev;
 807
 808         dev = pci_get_drvdata(pci_dev);
 809
 810         dprintk( 1, "%s\n", __func__);
 811
 812         if (!list_empty(&dev->drvlist)) {
 813                 struct cx8802_driver *drv, *tmp;
 814                 int err;
 815
 816                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
 817                        "while cx8802 sub-drivers still loaded?!\n",
 818                        dev->core->name);
 819
 820                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
 821                         err = drv->remove(drv);
 822                         if (err == 0) {
 823                                 mutex_lock(&drv->core->lock);
 824                                 list_del(&drv->drvlist);
 825                                 mutex_unlock(&drv->core->lock);
 826                         } else
 827                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 828                                        "failed (%d)\n", dev->core->name, err);
 829                         kfree(drv);
 830                 }
 831         }
 832
 833         /* Destroy any 8802 reference. */
 834         dev->core->dvbdev = NULL;
 835
 836         /* common */
 837         cx8802_fini_common(dev);
 838         cx88_core_put(dev->core,dev->pci);
 839         kfree(dev);
 840 }
 841
 842 static struct pci_device_id cx8802_pci_tbl[] = {
 843         {
 844                 .vendor       = 0x14f1,
 845                 .device       = 0x8802,
 846                 .subvendor    = PCI_ANY_ID,
 847                 .subdevice    = PCI_ANY_ID,
 848         },{
 849                 /* --- end of list --- */
 850         }
 851 };
 852 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 853
 854 static struct pci_driver cx8802_pci_driver = {
 855         .name     = "cx88-mpeg driver manager",
 856         .id_table = cx8802_pci_tbl,
 857         .probe    = cx8802_probe,
 858         .remove   = __devexit_p(cx8802_remove),
 859 };
 860
 861 static int __init cx8802_init(void)
 862 {
 863         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
 864                (CX88_VERSION_CODE >> 16) & 0xff,
 865                (CX88_VERSION_CODE >>  8) & 0xff,
 866                CX88_VERSION_CODE & 0xff);
 867 #ifdef SNAPSHOT
 868         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 869                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 870 #endif
 871         return pci_register_driver(&cx8802_pci_driver);
 872 }
 873
 874 static void __exit cx8802_fini(void)
 875 {
 876         pci_unregister_driver(&cx8802_pci_driver);
 877 }
 878
 879 module_init(cx8802_init);
 880 module_exit(cx8802_fini);
 881 EXPORT_SYMBOL(cx8802_buf_prepare);
 882 EXPORT_SYMBOL(cx8802_buf_queue);
 883 EXPORT_SYMBOL(cx8802_cancel_buffers);
 884
 885 EXPORT_SYMBOL(cx8802_register_driver);
 886 EXPORT_SYMBOL(cx8802_unregister_driver);
 887 EXPORT_SYMBOL(cx8802_get_driver);
 888 /* ----------------------------------------------------------- */
 889 /*
 890  * Local variables:
 891  * c-basic-offset: 8
 892  * End:
 893  * 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
 894  */