drivers/media/video/cx88/cx88-mpeg.c

   1 /*
   2  *
   3  *  Support for the mpeg transport stream transfers
   4  *  PCI function #2 of the cx2388x.
   5  *
   6  *    (c) 2004 Jelle Foks <jelle@foks.8m.com>
   7  *    (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
   8  *    (c) 2004 Gerd Knorr <kraxel@bytesex.org>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/device.h>
  28 #include <linux/dma-mapping.h>
  29 #include <linux/interrupt.h>
  30 #include <asm/delay.h>
  31
  32 #include "cx88.h"
  33
  34 /* ------------------------------------------------------------------ */
  35
  36 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
  37 MODULE_AUTHOR("Jelle Foks <jelle@foks.8m.com>");
  38 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
  39 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
  40 MODULE_LICENSE("GPL");
  41
  42 static unsigned int debug;
  43 module_param(debug,int,0644);
  44 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
  45
  46 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  47         printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
  48
  49 #define mpeg_dbg(level,fmt, arg...)     if (debug >= level) \
  50         printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
  51
  52 #if defined(CONFIG_MODULES) && defined(MODULE)
  53 static void request_module_async(struct work_struct *work)
  54 {
  55         struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
  56
  57         if (dev->core->board.mpeg & CX88_MPEG_DVB)
  58                 request_module("cx88-dvb");
  59         if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
  60                 request_module("cx88-blackbird");
  61 }
  62
  63 static void request_modules(struct cx8802_dev *dev)
  64 {
  65         INIT_WORK(&dev->request_module_wk, request_module_async);
  66         schedule_work(&dev->request_module_wk);
  67 }
  68 #else
  69 #define request_modules(dev)
  70 #endif /* CONFIG_MODULES */
  71
  72
  73 static LIST_HEAD(cx8802_devlist);
  74 /* ------------------------------------------------------------------ */
  75
  76 static int cx8802_start_dma(struct cx8802_dev    *dev,
  77                             struct cx88_dmaqueue *q,
  78                             struct cx88_buffer   *buf)
  79 {
  80         struct cx88_core *core = dev->core;
  81
  82         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
  83                 buf->vb.width, buf->vb.height, buf->vb.field);
  84
  85         /* setup fifo + format */
  86         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  87                                 dev->ts_packet_size, buf->risc.dma);
  88
  89         /* write TS length to chip */
  90         cx_write(MO_TS_LNGTH, buf->vb.width);
  91
  92         /* FIXME: this needs a review.
  93          * also: move to cx88-blackbird + cx88-dvb source files? */
  94
  95         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
  96
  97         if ( (core->active_type_id == CX88_MPEG_DVB) &&
  98                 (core->board.mpeg & CX88_MPEG_DVB) ) {
  99
 100                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 101                 /* negedge driven & software reset */
 102                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 103                 udelay(100);
 104                 cx_write(MO_PINMUX_IO, 0x00);
 105                 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
 106                 switch (core->boardnr) {
 107                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 108                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 109                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 110                 case CX88_BOARD_PCHDTV_HD5500:
 111                         cx_write(TS_SOP_STAT, 1<<13);
 112                         break;
 113                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 114                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 115                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 116                         udelay(100);
 117                         break;
 118                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 119                         break;
 120                 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 121                         /* Enable MPEG parallel IO and video signal pins */
 122                         cx_write(MO_PINMUX_IO, 0x88);
 123                         cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
 124                         dev->ts_gen_cntrl = 5;
 125                         cx_write(TS_SOP_STAT, 0);
 126                         cx_write(TS_VALERR_CNTRL, 0);
 127                         udelay(100);
 128                         break;
 129                 default:
 130                         cx_write(TS_SOP_STAT, 0x00);
 131                         break;
 132                 }
 133                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 134                 udelay(100);
 135         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 136                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 137                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 138                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 139
 140                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 141                 udelay(100);
 142
 143                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 144                 cx_write(TS_VALERR_CNTRL, 0x2000);
 145
 146                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 147                 udelay(100);
 148         } else {
 149                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
 150                         core->board.mpeg );
 151                 return -EINVAL;
 152         }
 153
 154         /* reset counter */
 155         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 156         q->count = 1;
 157
 158         /* enable irqs */
 159         dprintk( 1, "setting the interrupt mask\n" );
 160         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 161         cx_set(MO_TS_INTMSK,  0x1f0011);
 162
 163         /* start dma */
 164         cx_set(MO_DEV_CNTRL2, (1<<5));
 165         cx_set(MO_TS_DMACNTRL, 0x11);
 166         return 0;
 167 }
 168
 169 static int cx8802_stop_dma(struct cx8802_dev *dev)
 170 {
 171         struct cx88_core *core = dev->core;
 172         dprintk( 1, "cx8802_stop_dma\n" );
 173
 174         /* stop dma */
 175         cx_clear(MO_TS_DMACNTRL, 0x11);
 176
 177         /* disable irqs */
 178         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 179         cx_clear(MO_TS_INTMSK, 0x1f0011);
 180
 181         /* Reset the controller */
 182         cx_write(TS_GEN_CNTRL, 0xcd);
 183         return 0;
 184 }
 185
 186 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 187                                 struct cx88_dmaqueue *q)
 188 {
 189         struct cx88_buffer *buf;
 190
 191         dprintk( 1, "cx8802_restart_queue\n" );
 192         if (list_empty(&q->active))
 193         {
 194                 struct cx88_buffer *prev;
 195                 prev = NULL;
 196
 197                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 198
 199                 for (;;) {
 200                         if (list_empty(&q->queued))
 201                                 return 0;
 202                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 203                         if (NULL == prev) {
 204                                 list_del(&buf->vb.queue);
 205                                 list_add_tail(&buf->vb.queue,&q->active);
 206                                 cx8802_start_dma(dev, q, buf);
 207                                 buf->vb.state = VIDEOBUF_ACTIVE;
 208                                 buf->count    = q->count++;
 209                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 210                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 211                                         buf,buf->vb.i);
 212
 213                         } else if (prev->vb.width  == buf->vb.width  &&
 214                                    prev->vb.height == buf->vb.height &&
 215                                    prev->fmt       == buf->fmt) {
 216                                 list_del(&buf->vb.queue);
 217                                 list_add_tail(&buf->vb.queue,&q->active);
 218                                 buf->vb.state = VIDEOBUF_ACTIVE;
 219                                 buf->count    = q->count++;
 220                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 221                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 222                                         buf,buf->vb.i);
 223                         } else {
 224                                 return 0;
 225                         }
 226                         prev = buf;
 227                 }
 228                 return 0;
 229         }
 230
 231         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 232         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 233                 buf, buf->vb.i);
 234         cx8802_start_dma(dev, q, buf);
 235         list_for_each_entry(buf, &q->active, vb.queue)
 236                 buf->count = q->count++;
 237         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 238         return 0;
 239 }
 240
 241 /* ------------------------------------------------------------------ */
 242
 243 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 244                         struct cx88_buffer *buf, enum v4l2_field field)
 245 {
 246         int size = dev->ts_packet_size * dev->ts_packet_count;
 247         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 248         int rc;
 249
 250         dprintk(1, "%s: %p\n", __func__, buf);
 251         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 252                 return -EINVAL;
 253
 254         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 255                 buf->vb.width  = dev->ts_packet_size;
 256                 buf->vb.height = dev->ts_packet_count;
 257                 buf->vb.size   = size;
 258                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 259
 260                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 261                         goto fail;
 262                 cx88_risc_databuffer(dev->pci, &buf->risc,
 263                                      dma->sglist,
 264                                      buf->vb.width, buf->vb.height, 0);
 265         }
 266         buf->vb.state = VIDEOBUF_PREPARED;
 267         return 0;
 268
 269  fail:
 270         cx88_free_buffer(q,buf);
 271         return rc;
 272 }
 273
 274 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 275 {
 276         struct cx88_buffer    *prev;
 277         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 278
 279         dprintk( 1, "cx8802_buf_queue\n" );
 280         /* add jump to stopper */
 281         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 282         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 283
 284         if (list_empty(&cx88q->active)) {
 285                 dprintk( 1, "queue is empty - first active\n" );
 286                 list_add_tail(&buf->vb.queue,&cx88q->active);
 287                 cx8802_start_dma(dev, cx88q, buf);
 288                 buf->vb.state = VIDEOBUF_ACTIVE;
 289                 buf->count    = cx88q->count++;
 290                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 291                 dprintk(1,"[%p/%d] %s - first active\n",
 292                         buf, buf->vb.i, __func__);
 293
 294         } else {
 295                 dprintk( 1, "queue is not empty - append to active\n" );
 296                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 297                 list_add_tail(&buf->vb.queue,&cx88q->active);
 298                 buf->vb.state = VIDEOBUF_ACTIVE;
 299                 buf->count    = cx88q->count++;
 300                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 301                 dprintk( 1, "[%p/%d] %s - append to active\n",
 302                         buf, buf->vb.i, __func__);
 303         }
 304 }
 305
 306 /* ----------------------------------------------------------- */
 307
 308 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 309 {
 310         struct cx88_dmaqueue *q = &dev->mpegq;
 311         struct cx88_buffer *buf;
 312         unsigned long flags;
 313
 314         spin_lock_irqsave(&dev->slock,flags);
 315         while (!list_empty(&q->active)) {
 316                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 317                 list_del(&buf->vb.queue);
 318                 buf->vb.state = VIDEOBUF_ERROR;
 319                 wake_up(&buf->vb.done);
 320                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 321                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 322         }
 323         if (restart)
 324         {
 325                 dprintk(1, "restarting queue\n" );
 326                 cx8802_restart_queue(dev,q);
 327         }
 328         spin_unlock_irqrestore(&dev->slock,flags);
 329 }
 330
 331 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 332 {
 333         struct cx88_dmaqueue *q = &dev->mpegq;
 334
 335         dprintk( 1, "cx8802_cancel_buffers" );
 336         del_timer_sync(&q->timeout);
 337         cx8802_stop_dma(dev);
 338         do_cancel_buffers(dev,"cancel",0);
 339 }
 340
 341 static void cx8802_timeout(unsigned long data)
 342 {
 343         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 344
 345         dprintk(1, "%s\n",__func__);
 346
 347         if (debug)
 348                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 349         cx8802_stop_dma(dev);
 350         do_cancel_buffers(dev,"timeout",1);
 351 }
 352
 353 static char *cx88_mpeg_irqs[32] = {
 354         "ts_risci1", NULL, NULL, NULL,
 355         "ts_risci2", NULL, NULL, NULL,
 356         "ts_oflow",  NULL, NULL, NULL,
 357         "ts_sync",   NULL, NULL, NULL,
 358         "opc_err", "par_err", "rip_err", "pci_abort",
 359         "ts_err?",
 360 };
 361
 362 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 363 {
 364         struct cx88_core *core = dev->core;
 365         u32 status, mask, count;
 366
 367         dprintk( 1, "cx8802_mpeg_irq\n" );
 368         status = cx_read(MO_TS_INTSTAT);
 369         mask   = cx_read(MO_TS_INTMSK);
 370         if (0 == (status & mask))
 371                 return;
 372
 373         cx_write(MO_TS_INTSTAT, status);
 374
 375         if (debug || (status & mask & ~0xff))
 376                 cx88_print_irqbits(core->name, "irq mpeg ",
 377                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 378                                    status, mask);
 379
 380         /* risc op code error */
 381         if (status & (1 << 16)) {
 382                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 383                 cx_clear(MO_TS_DMACNTRL, 0x11);
 384                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 385         }
 386
 387         /* risc1 y */
 388         if (status & 0x01) {
 389                 dprintk( 1, "wake up\n" );
 390                 spin_lock(&dev->slock);
 391                 count = cx_read(MO_TS_GPCNT);
 392                 cx88_wakeup(dev->core, &dev->mpegq, count);
 393                 spin_unlock(&dev->slock);
 394         }
 395
 396         /* risc2 y */
 397         if (status & 0x10) {
 398                 spin_lock(&dev->slock);
 399                 cx8802_restart_queue(dev,&dev->mpegq);
 400                 spin_unlock(&dev->slock);
 401         }
 402
 403         /* other general errors */
 404         if (status & 0x1f0100) {
 405                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 406                 spin_lock(&dev->slock);
 407                 cx8802_stop_dma(dev);
 408                 cx8802_restart_queue(dev,&dev->mpegq);
 409                 spin_unlock(&dev->slock);
 410         }
 411 }
 412
 413 #define MAX_IRQ_LOOP 10
 414
 415 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 416 {
 417         struct cx8802_dev *dev = dev_id;
 418         struct cx88_core *core = dev->core;
 419         u32 status;
 420         int loop, handled = 0;
 421
 422         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 423                 status = cx_read(MO_PCI_INTSTAT) &
 424                         (core->pci_irqmask | PCI_INT_TSINT);
 425                 if (0 == status)
 426                         goto out;
 427                 dprintk( 1, "cx8802_irq\n" );
 428                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 429                 dprintk( 1, "    status: %d\n", status );
 430                 handled = 1;
 431                 cx_write(MO_PCI_INTSTAT, status);
 432
 433                 if (status & core->pci_irqmask)
 434                         cx88_core_irq(core,status);
 435                 if (status & PCI_INT_TSINT)
 436                         cx8802_mpeg_irq(dev);
 437         };
 438         if (MAX_IRQ_LOOP == loop) {
 439                 dprintk( 0, "clearing mask\n" );
 440                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 441                        core->name);
 442                 cx_write(MO_PCI_INTMSK,0);
 443         }
 444
 445  out:
 446         return IRQ_RETVAL(handled);
 447 }
 448
 449 static int cx8802_init_common(struct cx8802_dev *dev)
 450 {
 451         struct cx88_core *core = dev->core;
 452         int err;
 453
 454         /* pci init */
 455         if (pci_enable_device(dev->pci))
 456                 return -EIO;
 457         pci_set_master(dev->pci);
 458         if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
 459                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 460                 return -EIO;
 461         }
 462
 463         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 464         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 465         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 466                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 467                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 468                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 469
 470         /* initialize driver struct */
 471         spin_lock_init(&dev->slock);
 472
 473         /* init dma queue */
 474         INIT_LIST_HEAD(&dev->mpegq.active);
 475         INIT_LIST_HEAD(&dev->mpegq.queued);
 476         dev->mpegq.timeout.function = cx8802_timeout;
 477         dev->mpegq.timeout.data     = (unsigned long)dev;
 478         init_timer(&dev->mpegq.timeout);
 479         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 480                           MO_TS_DMACNTRL,0x11,0x00);
 481
 482         /* get irq */
 483         err = request_irq(dev->pci->irq, cx8802_irq,
 484                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 485         if (err < 0) {
 486                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 487                        dev->core->name, dev->pci->irq);
 488                 return err;
 489         }
 490         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 491
 492         /* everything worked */
 493         pci_set_drvdata(dev->pci,dev);
 494         return 0;
 495 }
 496
 497 static void cx8802_fini_common(struct cx8802_dev *dev)
 498 {
 499         dprintk( 2, "cx8802_fini_common\n" );
 500         cx8802_stop_dma(dev);
 501         pci_disable_device(dev->pci);
 502
 503         /* unregister stuff */
 504         free_irq(dev->pci->irq, dev);
 505         pci_set_drvdata(dev->pci, NULL);
 506
 507         /* free memory */
 508         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 509 }
 510
 511 /* ----------------------------------------------------------- */
 512
 513 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 514 {
 515         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 516         struct cx88_core *core = dev->core;
 517
 518         /* stop mpeg dma */
 519         spin_lock(&dev->slock);
 520         if (!list_empty(&dev->mpegq.active)) {
 521                 dprintk( 2, "suspend\n" );
 522                 printk("%s: suspend mpeg\n", core->name);
 523                 cx8802_stop_dma(dev);
 524                 del_timer(&dev->mpegq.timeout);
 525         }
 526         spin_unlock(&dev->slock);
 527
 528         /* FIXME -- shutdown device */
 529         cx88_shutdown(dev->core);
 530
 531         pci_save_state(pci_dev);
 532         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 533                 pci_disable_device(pci_dev);
 534                 dev->state.disabled = 1;
 535         }
 536         return 0;
 537 }
 538
 539 static int cx8802_resume_common(struct pci_dev *pci_dev)
 540 {
 541         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 542         struct cx88_core *core = dev->core;
 543         int err;
 544
 545         if (dev->state.disabled) {
 546                 err=pci_enable_device(pci_dev);
 547                 if (err) {
 548                         printk(KERN_ERR "%s: can't enable device\n",
 549                                                dev->core->name);
 550                         return err;
 551                 }
 552                 dev->state.disabled = 0;
 553         }
 554         err=pci_set_power_state(pci_dev, PCI_D0);
 555         if (err) {
 556                 printk(KERN_ERR "%s: can't enable device\n",
 557                                                dev->core->name);
 558                 pci_disable_device(pci_dev);
 559                 dev->state.disabled = 1;
 560
 561                 return err;
 562         }
 563         pci_restore_state(pci_dev);
 564
 565         /* FIXME: re-initialize hardware */
 566         cx88_reset(dev->core);
 567
 568         /* restart video+vbi capture */
 569         spin_lock(&dev->slock);
 570         if (!list_empty(&dev->mpegq.active)) {
 571                 printk("%s: resume mpeg\n", core->name);
 572                 cx8802_restart_queue(dev,&dev->mpegq);
 573         }
 574         spin_unlock(&dev->slock);
 575
 576         return 0;
 577 }
 578
 579 #if defined(CONFIG_VIDEO_CX88_BLACKBIRD) || \
 580     defined(CONFIG_VIDEO_CX88_BLACKBIRD_MODULE)
 581 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 582 {
 583         int minor = iminor(inode);
 584         struct cx8802_dev *dev;
 585
 586         list_for_each_entry(dev, &cx8802_devlist, devlist)
 587                 if (dev->mpeg_dev && dev->mpeg_dev->minor == minor)
 588                         return dev;
 589
 590         return NULL;
 591 }
 592 EXPORT_SYMBOL(cx8802_get_device);
 593 #endif
 594
 595 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 596 {
 597         struct cx8802_driver *d;
 598
 599         list_for_each_entry(d, &dev->drvlist, drvlist)
 600                 if (d->type_id == btype)
 601                         return d;
 602
 603         return NULL;
 604 }
 605
 606 /* Driver asked for hardware access. */
 607 static int cx8802_request_acquire(struct cx8802_driver *drv)
 608 {
 609         struct cx88_core *core = drv->core;
 610
 611         /* Fail a request for hardware if the device is busy. */
 612         if (core->active_type_id != CX88_BOARD_NONE &&
 613             core->active_type_id != drv->type_id)
 614                 return -EBUSY;
 615
 616         core->input = CX88_VMUX_DVB;
 617
 618         if (drv->advise_acquire)
 619         {
 620                 mutex_lock(&drv->core->lock);
 621                 core->active_ref++;
 622                 if (core->active_type_id == CX88_BOARD_NONE) {
 623                         core->active_type_id = drv->type_id;
 624                         drv->advise_acquire(drv);
 625                 }
 626                 mutex_unlock(&drv->core->lock);
 627
 628                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 629         }
 630
 631         return 0;
 632 }
 633
 634 /* Driver asked to release hardware. */
 635 static int cx8802_request_release(struct cx8802_driver *drv)
 636 {
 637         struct cx88_core *core = drv->core;
 638
 639         mutex_lock(&drv->core->lock);
 640         if (drv->advise_release && --core->active_ref == 0)
 641         {
 642                 drv->advise_release(drv);
 643                 core->active_type_id = CX88_BOARD_NONE;
 644                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 645         }
 646         mutex_unlock(&drv->core->lock);
 647
 648         return 0;
 649 }
 650
 651 static int cx8802_check_driver(struct cx8802_driver *drv)
 652 {
 653         if (drv == NULL)
 654                 return -ENODEV;
 655
 656         if ((drv->type_id != CX88_MPEG_DVB) &&
 657                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 658                 return -EINVAL;
 659
 660         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 661                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 662                 return -EINVAL;
 663
 664         if ((drv->probe == NULL) ||
 665                 (drv->remove == NULL) ||
 666                 (drv->advise_acquire == NULL) ||
 667                 (drv->advise_release == NULL))
 668                 return -EINVAL;
 669
 670         return 0;
 671 }
 672
 673 int cx8802_register_driver(struct cx8802_driver *drv)
 674 {
 675         struct cx8802_dev *dev;
 676         struct cx8802_driver *driver;
 677         int err, i = 0;
 678
 679         printk(KERN_INFO
 680                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 681                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 682                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 683
 684         if ((err = cx8802_check_driver(drv)) != 0) {
 685                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 686                 return err;
 687         }
 688
 689         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 690                 printk(KERN_INFO
 691                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 692                        dev->core->name, dev->pci->subsystem_vendor,
 693                        dev->pci->subsystem_device, dev->core->board.name,
 694                        dev->core->boardnr);
 695
 696                 /* Bring up a new struct for each driver instance */
 697                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 698                 if (driver == NULL)
 699                         return -ENOMEM;
 700
 701                 /* Snapshot of the driver registration data */
 702                 drv->core = dev->core;
 703                 drv->suspend = cx8802_suspend_common;
 704                 drv->resume = cx8802_resume_common;
 705                 drv->request_acquire = cx8802_request_acquire;
 706                 drv->request_release = cx8802_request_release;
 707                 memcpy(driver, drv, sizeof(*driver));
 708
 709                 err = drv->probe(driver);
 710                 if (err == 0) {
 711                         i++;
 712                         mutex_lock(&drv->core->lock);
 713                         list_add_tail(&driver->drvlist, &dev->drvlist);
 714                         mutex_unlock(&drv->core->lock);
 715                 } else {
 716                         printk(KERN_ERR
 717                                "%s/2: cx8802 probe failed, err = %d\n",
 718                                dev->core->name, err);
 719                 }
 720
 721         }
 722
 723         return i ? 0 : -ENODEV;
 724 }
 725
 726 int cx8802_unregister_driver(struct cx8802_driver *drv)
 727 {
 728         struct cx8802_dev *dev;
 729         struct cx8802_driver *d, *dtmp;
 730         int err = 0;
 731
 732         printk(KERN_INFO
 733                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 734                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 735                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 736
 737         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 738                 printk(KERN_INFO
 739                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 740                        dev->core->name, dev->pci->subsystem_vendor,
 741                        dev->pci->subsystem_device, dev->core->board.name,
 742                        dev->core->boardnr);
 743
 744                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
 745                         /* only unregister the correct driver type */
 746                         if (d->type_id != drv->type_id)
 747                                 continue;
 748
 749                         err = d->remove(d);
 750                         if (err == 0) {
 751                                 mutex_lock(&drv->core->lock);
 752                                 list_del(&d->drvlist);
 753                                 mutex_unlock(&drv->core->lock);
 754                                 kfree(d);
 755                         } else
 756                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 757                                        "failed (%d)\n", dev->core->name, err);
 758                 }
 759
 760         }
 761
 762         return err;
 763 }
 764
 765 /* ----------------------------------------------------------- */
 766 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 767                                const struct pci_device_id *pci_id)
 768 {
 769         struct cx8802_dev *dev;
 770         struct cx88_core  *core;
 771         struct videobuf_dvb_frontend *demod;
 772         int err,i;
 773
 774         /* general setup */
 775         core = cx88_core_get(pci_dev);
 776         if (NULL == core)
 777                 return -EINVAL;
 778
 779         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 780
 781         err = -ENODEV;
 782         if (!core->board.mpeg)
 783                 goto fail_core;
 784
 785         if (!core->board.num_frontends) {
 786                 printk(KERN_ERR "%s() .num_frontends should be non-zero, err = %d\n", __func__, err);
 787                 goto fail_core;
 788         }
 789
 790         err = -ENOMEM;
 791         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 792         if (NULL == dev)
 793                 goto fail_core;
 794         dev->pci = pci_dev;
 795         dev->core = core;
 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         mutex_init(&dev->frontends.lock);
 805         INIT_LIST_HEAD(&dev->frontends.felist);
 806
 807         printk(KERN_INFO "%s() allocating %d frontend(s)\n", __func__, core->board.num_frontends);
 808
 809         for (i = 1; i <= core->board.num_frontends; i++) {
 810                 demod = videobuf_dvb_alloc_frontend(&dev->frontends, i);
 811                 if(demod == NULL) {
 812                         printk(KERN_ERR "%s() failed to alloc\n", __func__);
 813                         err = -ENOMEM;
 814                         goto fail_free;
 815                 }
 816         }
 817
 818         /* Maintain a reference so cx88-video can query the 8802 device. */
 819         core->dvbdev = dev;
 820
 821         /* now autoload cx88-dvb or cx88-blackbird */
 822         request_modules(dev);
 823         return 0;
 824
 825  fail_free:
 826         kfree(dev);
 827  fail_core:
 828         cx88_core_put(core,pci_dev);
 829         return err;
 830 }
 831
 832 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 833 {
 834         struct cx8802_dev *dev;
 835
 836         dev = pci_get_drvdata(pci_dev);
 837
 838         dprintk( 1, "%s\n", __func__);
 839
 840         if (!list_empty(&dev->drvlist)) {
 841                 struct cx8802_driver *drv, *tmp;
 842                 int err;
 843
 844                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
 845                        "while cx8802 sub-drivers still loaded?!\n",
 846                        dev->core->name);
 847
 848                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
 849                         err = drv->remove(drv);
 850                         if (err == 0) {
 851                                 mutex_lock(&drv->core->lock);
 852                                 list_del(&drv->drvlist);
 853                                 mutex_unlock(&drv->core->lock);
 854                         } else
 855                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 856                                        "failed (%d)\n", dev->core->name, err);
 857                         kfree(drv);
 858                 }
 859         }
 860
 861         /* Destroy any 8802 reference. */
 862         dev->core->dvbdev = NULL;
 863
 864         /* common */
 865         cx8802_fini_common(dev);
 866         cx88_core_put(dev->core,dev->pci);
 867         kfree(dev);
 868 }
 869
 870 static struct pci_device_id cx8802_pci_tbl[] = {
 871         {
 872                 .vendor       = 0x14f1,
 873                 .device       = 0x8802,
 874                 .subvendor    = PCI_ANY_ID,
 875                 .subdevice    = PCI_ANY_ID,
 876         },{
 877                 /* --- end of list --- */
 878         }
 879 };
 880 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 881
 882 static struct pci_driver cx8802_pci_driver = {
 883         .name     = "cx88-mpeg driver manager",
 884         .id_table = cx8802_pci_tbl,
 885         .probe    = cx8802_probe,
 886         .remove   = __devexit_p(cx8802_remove),
 887 };
 888
 889 static int cx8802_init(void)
 890 {
 891         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
 892                (CX88_VERSION_CODE >> 16) & 0xff,
 893                (CX88_VERSION_CODE >>  8) & 0xff,
 894                CX88_VERSION_CODE & 0xff);
 895 #ifdef SNAPSHOT
 896         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 897                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 898 #endif
 899         return pci_register_driver(&cx8802_pci_driver);
 900 }
 901
 902 static void cx8802_fini(void)
 903 {
 904         pci_unregister_driver(&cx8802_pci_driver);
 905 }
 906
 907 module_init(cx8802_init);
 908 module_exit(cx8802_fini);
 909 EXPORT_SYMBOL(cx8802_buf_prepare);
 910 EXPORT_SYMBOL(cx8802_buf_queue);
 911 EXPORT_SYMBOL(cx8802_cancel_buffers);
 912
 913 EXPORT_SYMBOL(cx8802_register_driver);
 914 EXPORT_SYMBOL(cx8802_unregister_driver);
 915 EXPORT_SYMBOL(cx8802_get_driver);
 916 /* ----------------------------------------------------------- */
 917 /*
 918  * Local variables:
 919  * c-basic-offset: 8
 920  * End:
 921  * 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
 922  */