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

   1 /*
   2  *
   3  *  Support for the mpeg transport stream transfers
   4  *  PCI function #2 of the cx2388x.
   5  *
   6  *    (c) 2004 Jelle Foks <jelle@foks.8m.com>
   7  *    (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
   8  *    (c) 2004 Gerd Knorr <kraxel@bytesex.org>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/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 #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         switch (cx88_boards[dev->core->board].mpeg) {
  57         case CX88_MPEG_BLACKBIRD:
  58                 request_module("cx88-blackbird");
  59                 break;
  60         case CX88_MPEG_DVB:
  61                 request_module("cx88-dvb");
  62                 break;
  63         case CX88_BOARD_NONE:
  64                 /* reaching this one isn't possible */
  65                 break;
  66         default:
  67                 printk("cx88-mpeg.c: WARNING extension [%d] is not supposed to be supported\n",cx88_boards[dev->core->board].mpeg);
  68         }
  69 }
  70
  71 static void request_modules(struct cx8802_dev *dev)
  72 {
  73         INIT_WORK(&dev->request_module_wk, request_module_async);
  74         schedule_work(&dev->request_module_wk);
  75 }
  76 #else
  77 #define request_modules(dev)
  78 #endif /* CONFIG_MODULES */
  79
  80
  81 static LIST_HEAD(cx8802_devlist);
  82 /* ------------------------------------------------------------------ */
  83
  84 static int cx8802_start_dma(struct cx8802_dev    *dev,
  85                             struct cx88_dmaqueue *q,
  86                             struct cx88_buffer   *buf)
  87 {
  88         struct cx88_core *core = dev->core;
  89
  90         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n", dev->width, dev->height, buf->vb.field);
  91
  92         /* setup fifo + format */
  93         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  94                                 dev->ts_packet_size, buf->risc.dma);
  95
  96         /* write TS length to chip */
  97         cx_write(MO_TS_LNGTH, buf->vb.width);
  98
  99         /* FIXME: this needs a review.
 100          * also: move to cx88-blackbird + cx88-dvb source files? */
 101
 102         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
 103
 104         if ( (core->active_type_id == CX88_MPEG_DVB) &&
 105                 (cx88_boards[core->board].mpeg & CX88_MPEG_DVB) ) {
 106
 107                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 108                 /* negedge driven & software reset */
 109                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 110                 udelay(100);
 111                 cx_write(MO_PINMUX_IO, 0x00);
 112                 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
 113                 switch (core->board) {
 114                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 115                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 116                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 117                 case CX88_BOARD_PCHDTV_HD5500:
 118                         cx_write(TS_SOP_STAT, 1<<13);
 119                         break;
 120                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 121                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 122                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 123                         udelay(100);
 124                         break;
 125                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 126                         break;
 127                 default:
 128                         cx_write(TS_SOP_STAT, 0x00);
 129                         break;
 130                 }
 131                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 132                 udelay(100);
 133         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 134                 (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) ) {
 135                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 136                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 137
 138                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 139                 udelay(100);
 140
 141                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 142                 cx_write(TS_VALERR_CNTRL, 0x2000);
 143
 144                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 145                 udelay(100);
 146         } else {
 147                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
 148                         cx88_boards[core->board].mpeg );
 149                 return -EINVAL;
 150         }
 151
 152         /* reset counter */
 153         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 154         q->count = 1;
 155
 156         /* enable irqs */
 157         dprintk( 1, "setting the interrupt mask\n" );
 158         cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
 159         cx_set(MO_TS_INTMSK,  0x1f0011);
 160
 161         /* start dma */
 162         cx_set(MO_DEV_CNTRL2, (1<<5));
 163         cx_set(MO_TS_DMACNTRL, 0x11);
 164         return 0;
 165 }
 166
 167 static int cx8802_stop_dma(struct cx8802_dev *dev)
 168 {
 169         struct cx88_core *core = dev->core;
 170         dprintk( 1, "cx8802_stop_dma\n" );
 171
 172         /* stop dma */
 173         cx_clear(MO_TS_DMACNTRL, 0x11);
 174
 175         /* disable irqs */
 176         cx_clear(MO_PCI_INTMSK, 0x000004);
 177         cx_clear(MO_TS_INTMSK, 0x1f0011);
 178
 179         /* Reset the controller */
 180         cx_write(TS_GEN_CNTRL, 0xcd);
 181         return 0;
 182 }
 183
 184 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 185                                 struct cx88_dmaqueue *q)
 186 {
 187         struct cx88_buffer *buf;
 188         struct list_head *item;
 189
 190        dprintk( 1, "cx8802_restart_queue\n" );
 191         if (list_empty(&q->active))
 192         {
 193                struct cx88_buffer *prev;
 194                prev = NULL;
 195
 196                dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 197
 198                for (;;) {
 199                        if (list_empty(&q->queued))
 200                                return 0;
 201                        buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 202                        if (NULL == prev) {
 203                                list_del(&buf->vb.queue);
 204                                list_add_tail(&buf->vb.queue,&q->active);
 205                                cx8802_start_dma(dev, q, buf);
 206                                buf->vb.state = STATE_ACTIVE;
 207                                buf->count    = q->count++;
 208                                mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 209                                dprintk(1,"[%p/%d] restart_queue - first active\n",
 210                                        buf,buf->vb.i);
 211
 212                        } else if (prev->vb.width  == buf->vb.width  &&
 213                                   prev->vb.height == buf->vb.height &&
 214                                   prev->fmt       == buf->fmt) {
 215                                list_del(&buf->vb.queue);
 216                                list_add_tail(&buf->vb.queue,&q->active);
 217                                buf->vb.state = STATE_ACTIVE;
 218                                buf->count    = q->count++;
 219                                prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 220                                dprintk(1,"[%p/%d] restart_queue - move to active\n",
 221                                        buf,buf->vb.i);
 222                        } else {
 223                                return 0;
 224                        }
 225                        prev = buf;
 226                }
 227                 return 0;
 228         }
 229
 230         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 231         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 232                 buf, buf->vb.i);
 233         cx8802_start_dma(dev, q, buf);
 234         list_for_each(item,&q->active) {
 235                 buf = list_entry(item, struct cx88_buffer, vb.queue);
 236                 buf->count = q->count++;
 237         }
 238         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 239         return 0;
 240 }
 241
 242 /* ------------------------------------------------------------------ */
 243
 244 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 245                         struct cx88_buffer *buf, enum v4l2_field field)
 246 {
 247         int size = dev->ts_packet_size * dev->ts_packet_count;
 248         int rc;
 249
 250         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
 251         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 252                 return -EINVAL;
 253
 254         if (STATE_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                                      buf->vb.dma.sglist,
 264                                      buf->vb.width, buf->vb.height);
 265         }
 266         buf->vb.state = STATE_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 = STATE_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, __FUNCTION__);
 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 = STATE_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, __FUNCTION__);
 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 = STATE_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(0, "%s\n",__FUNCTION__);
 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, status, mask);
 378
 379         /* risc op code error */
 380         if (status & (1 << 16)) {
 381                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 382                 cx_clear(MO_TS_DMACNTRL, 0x11);
 383                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 384         }
 385
 386         /* risc1 y */
 387         if (status & 0x01) {
 388                 dprintk( 1, "wake up\n" );
 389                 spin_lock(&dev->slock);
 390                 count = cx_read(MO_TS_GPCNT);
 391                 cx88_wakeup(dev->core, &dev->mpegq, count);
 392                 spin_unlock(&dev->slock);
 393         }
 394
 395         /* risc2 y */
 396         if (status & 0x10) {
 397                 spin_lock(&dev->slock);
 398                 cx8802_restart_queue(dev,&dev->mpegq);
 399                 spin_unlock(&dev->slock);
 400         }
 401
 402         /* other general errors */
 403         if (status & 0x1f0100) {
 404                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 405                 spin_lock(&dev->slock);
 406                 cx8802_stop_dma(dev);
 407                 cx8802_restart_queue(dev,&dev->mpegq);
 408                 spin_unlock(&dev->slock);
 409         }
 410 }
 411
 412 #define MAX_IRQ_LOOP 10
 413
 414 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 415 {
 416         struct cx8802_dev *dev = dev_id;
 417         struct cx88_core *core = dev->core;
 418         u32 status;
 419         int loop, handled = 0;
 420
 421         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 422                 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
 423                 if (0 == status)
 424                         goto out;
 425                 dprintk( 1, "cx8802_irq\n" );
 426                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 427                 dprintk( 1, "    status: %d\n", status );
 428                 handled = 1;
 429                 cx_write(MO_PCI_INTSTAT, status);
 430
 431                 if (status & core->pci_irqmask)
 432                         cx88_core_irq(core,status);
 433                 if (status & 0x04)
 434                         cx8802_mpeg_irq(dev);
 435         };
 436         if (MAX_IRQ_LOOP == loop) {
 437                 dprintk( 0, "clearing mask\n" );
 438                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 439                        core->name);
 440                 cx_write(MO_PCI_INTMSK,0);
 441         }
 442
 443  out:
 444         return IRQ_RETVAL(handled);
 445 }
 446
 447 /* ----------------------------------------------------------- */
 448 /* exported stuff                                              */
 449
 450 int cx8802_init_common(struct cx8802_dev *dev)
 451 {
 452         struct cx88_core *core = dev->core;
 453         int err;
 454
 455         /* pci init */
 456         if (pci_enable_device(dev->pci))
 457                 return -EIO;
 458         pci_set_master(dev->pci);
 459         if (!pci_dma_supported(dev->pci,0xffffffff)) {
 460                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 461                 return -EIO;
 462         }
 463
 464         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 465         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 466         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 467                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 468                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 469                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 470
 471         /* initialize driver struct */
 472         spin_lock_init(&dev->slock);
 473
 474         /* init dma queue */
 475         INIT_LIST_HEAD(&dev->mpegq.active);
 476         INIT_LIST_HEAD(&dev->mpegq.queued);
 477         dev->mpegq.timeout.function = cx8802_timeout;
 478         dev->mpegq.timeout.data     = (unsigned long)dev;
 479         init_timer(&dev->mpegq.timeout);
 480         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 481                           MO_TS_DMACNTRL,0x11,0x00);
 482
 483         /* get irq */
 484         err = request_irq(dev->pci->irq, cx8802_irq,
 485                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 486         if (err < 0) {
 487                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 488                        dev->core->name, dev->pci->irq);
 489                 return err;
 490         }
 491         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 492
 493         /* everything worked */
 494         pci_set_drvdata(dev->pci,dev);
 495         return 0;
 496 }
 497
 498 void cx8802_fini_common(struct cx8802_dev *dev)
 499 {
 500         dprintk( 2, "cx8802_fini_common\n" );
 501         cx8802_stop_dma(dev);
 502         pci_disable_device(dev->pci);
 503
 504         /* unregister stuff */
 505         free_irq(dev->pci->irq, dev);
 506         pci_set_drvdata(dev->pci, NULL);
 507
 508         /* free memory */
 509         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 510 }
 511
 512 /* ----------------------------------------------------------- */
 513
 514 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 515 {
 516         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 517         struct cx88_core *core = dev->core;
 518
 519         /* stop mpeg dma */
 520         spin_lock(&dev->slock);
 521         if (!list_empty(&dev->mpegq.active)) {
 522                 dprintk( 2, "suspend\n" );
 523                 printk("%s: suspend mpeg\n", core->name);
 524                 cx8802_stop_dma(dev);
 525                 del_timer(&dev->mpegq.timeout);
 526         }
 527         spin_unlock(&dev->slock);
 528
 529         /* FIXME -- shutdown device */
 530         cx88_shutdown(dev->core);
 531
 532         pci_save_state(pci_dev);
 533         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 534                 pci_disable_device(pci_dev);
 535                 dev->state.disabled = 1;
 536         }
 537         return 0;
 538 }
 539
 540 int cx8802_resume_common(struct pci_dev *pci_dev)
 541 {
 542         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 543         struct cx88_core *core = dev->core;
 544         int err;
 545
 546         if (dev->state.disabled) {
 547                 err=pci_enable_device(pci_dev);
 548                 if (err) {
 549                         printk(KERN_ERR "%s: can't enable device\n",
 550                                                dev->core->name);
 551                         return err;
 552                 }
 553                 dev->state.disabled = 0;
 554         }
 555         err=pci_set_power_state(pci_dev, PCI_D0);
 556         if (err) {
 557                 printk(KERN_ERR "%s: can't enable device\n",
 558                                                dev->core->name);
 559                 pci_disable_device(pci_dev);
 560                 dev->state.disabled = 1;
 561
 562                 return err;
 563         }
 564         pci_restore_state(pci_dev);
 565
 566         /* FIXME: re-initialize hardware */
 567         cx88_reset(dev->core);
 568
 569         /* restart video+vbi capture */
 570         spin_lock(&dev->slock);
 571         if (!list_empty(&dev->mpegq.active)) {
 572                 printk("%s: resume mpeg\n", core->name);
 573                 cx8802_restart_queue(dev,&dev->mpegq);
 574         }
 575         spin_unlock(&dev->slock);
 576
 577         return 0;
 578 }
 579
 580 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 581 {
 582         int minor = iminor(inode);
 583         struct cx8802_dev *h = NULL;
 584         struct list_head *list;
 585
 586         list_for_each(list,&cx8802_devlist) {
 587                 h = list_entry(list, struct cx8802_dev, devlist);
 588                 if (h->mpeg_dev->minor == minor)
 589                         return h;
 590         }
 591
 592         return NULL;
 593 }
 594
 595 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 596 {
 597         struct cx8802_dev *h = NULL;
 598         struct cx8802_driver *d = NULL;
 599         struct list_head *list;
 600         struct list_head *list2;
 601
 602         list_for_each(list,&cx8802_devlist) {
 603                 h = list_entry(list, struct cx8802_dev, devlist);
 604                 if (h != dev)
 605                         continue;
 606
 607                 list_for_each(list2, &h->drvlist.devlist) {
 608                         d = list_entry(list2, struct cx8802_driver, devlist);
 609
 610                         /* only unregister the correct driver type */
 611                         if (d->type_id == btype) {
 612                                 return d;
 613                         }
 614                 }
 615         }
 616
 617         return NULL;
 618 }
 619
 620 /* Driver asked for hardware access. */
 621 int cx8802_request_acquire(struct cx8802_driver *drv)
 622 {
 623         struct cx88_core *core = drv->core;
 624
 625         /* Fail a request for hardware if the device is busy. */
 626         if (core->active_type_id != CX88_BOARD_NONE)
 627                 return -EBUSY;
 628
 629         if (drv->advise_acquire)
 630         {
 631                 core->active_type_id = drv->type_id;
 632                 drv->advise_acquire(drv);
 633
 634                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 635         }
 636
 637         return 0;
 638 }
 639
 640 /* Driver asked to release hardware. */
 641 int cx8802_request_release(struct cx8802_driver *drv)
 642 {
 643         struct cx88_core *core = drv->core;
 644
 645         if (drv->advise_release)
 646         {
 647                 drv->advise_release(drv);
 648                 core->active_type_id = CX88_BOARD_NONE;
 649                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 650         }
 651
 652         return 0;
 653 }
 654
 655 static int cx8802_check_driver(struct cx8802_driver *drv)
 656 {
 657         if (drv == NULL)
 658                 return -ENODEV;
 659
 660         if ((drv->type_id != CX88_MPEG_DVB) &&
 661                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 662                 return -EINVAL;
 663
 664         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 665                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 666                 return -EINVAL;
 667
 668         if ((drv->probe == NULL) ||
 669                 (drv->remove == NULL) ||
 670                 (drv->advise_acquire == NULL) ||
 671                 (drv->advise_release == NULL))
 672                 return -EINVAL;
 673
 674         return 0;
 675 }
 676
 677 int cx8802_register_driver(struct cx8802_driver *drv)
 678 {
 679         struct cx8802_dev *h;
 680         struct cx8802_driver *driver;
 681         struct list_head *list;
 682         int err = 0, i = 0;
 683
 684         printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
 685                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 686                 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 687
 688         if ((err = cx8802_check_driver(drv)) != 0) {
 689                 printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
 690                 return err;
 691         }
 692
 693         list_for_each(list,&cx8802_devlist) {
 694                 h = list_entry(list, struct cx8802_dev, devlist);
 695
 696                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 697                         h->core->name,h->pci->subsystem_vendor,
 698                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 699                         h->core->board);
 700
 701                 /* Bring up a new struct for each driver instance */
 702                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 703                 if (driver == NULL)
 704                         return -ENOMEM;
 705
 706                 /* Snapshot of the driver registration data */
 707                 drv->core = h->core;
 708                 drv->suspend = cx8802_suspend_common;
 709                 drv->resume = cx8802_resume_common;
 710                 drv->request_acquire = cx8802_request_acquire;
 711                 drv->request_release = cx8802_request_release;
 712                 memcpy(driver, drv, sizeof(*driver));
 713
 714                 err = drv->probe(driver);
 715                 if (err == 0) {
 716                         i++;
 717                         mutex_lock(&drv->core->lock);
 718                         list_add_tail(&driver->devlist,&h->drvlist.devlist);
 719                         mutex_unlock(&drv->core->lock);
 720                 } else {
 721                         printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
 722                 }
 723
 724         }
 725         if (i == 0)
 726                 err = -ENODEV;
 727         else
 728                 err = 0;
 729
 730         return err;
 731 }
 732
 733 int cx8802_unregister_driver(struct cx8802_driver *drv)
 734 {
 735         struct cx8802_dev *h;
 736         struct cx8802_driver *d;
 737         struct list_head *list;
 738         struct list_head *list2, *q;
 739         int err = 0, i = 0;
 740
 741         printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
 742                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");
 743
 744         list_for_each(list,&cx8802_devlist) {
 745                 i++;
 746                 h = list_entry(list, struct cx8802_dev, devlist);
 747
 748                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 749                         h->core->name,h->pci->subsystem_vendor,
 750                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 751                         h->core->board);
 752
 753                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
 754                         d = list_entry(list2, struct cx8802_driver, devlist);
 755
 756                         /* only unregister the correct driver type */
 757                         if (d->type_id != drv->type_id)
 758                                 continue;
 759
 760                         err = d->remove(d);
 761                         if (err == 0) {
 762                                 mutex_lock(&drv->core->lock);
 763                                 list_del(list2);
 764                                 mutex_unlock(&drv->core->lock);
 765                         } else
 766                                 printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);
 767
 768                 }
 769
 770         }
 771
 772         return err;
 773 }
 774
 775 /* ----------------------------------------------------------- */
 776 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 777                                const struct pci_device_id *pci_id)
 778 {
 779         struct cx8802_dev *dev;
 780         struct cx88_core  *core;
 781         int err;
 782
 783         /* general setup */
 784         core = cx88_core_get(pci_dev);
 785         if (NULL == core)
 786                 return -EINVAL;
 787
 788         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 789
 790         err = -ENODEV;
 791         if (!cx88_boards[core->board].mpeg)
 792                 goto fail_core;
 793
 794         err = -ENOMEM;
 795         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 796         if (NULL == dev)
 797                 goto fail_core;
 798         dev->pci = pci_dev;
 799         dev->core = core;
 800
 801         err = cx8802_init_common(dev);
 802         if (err != 0)
 803                 goto fail_free;
 804
 805         INIT_LIST_HEAD(&dev->drvlist.devlist);
 806         list_add_tail(&dev->devlist,&cx8802_devlist);
 807
 808         /* Maintain a reference so cx88-video can query the 8802 device. */
 809         core->dvbdev = dev;
 810
 811         /* now autoload cx88-dvb or cx88-blackbird */
 812         request_modules(dev);
 813         return 0;
 814
 815  fail_free:
 816         kfree(dev);
 817  fail_core:
 818         cx88_core_put(core,pci_dev);
 819         return err;
 820 }
 821
 822 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 823 {
 824         struct cx8802_dev *dev;
 825         struct cx8802_driver *h;
 826         struct list_head *list;
 827
 828         dev = pci_get_drvdata(pci_dev);
 829
 830         dprintk( 1, "%s\n", __FUNCTION__);
 831
 832         list_for_each(list,&dev->drvlist.devlist) {
 833                 h = list_entry(list, struct cx8802_driver, devlist);
 834                 dprintk( 1, " ->driver\n");
 835                 if (h->remove == NULL) {
 836                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
 837                         continue;
 838                 }
 839                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
 840                 cx8802_unregister_driver(h);
 841                 list_del(&dev->drvlist.devlist);
 842         }
 843
 844         /* Destroy any 8802 reference. */
 845         dev->core->dvbdev = NULL;
 846
 847         /* common */
 848         cx8802_fini_common(dev);
 849         cx88_core_put(dev->core,dev->pci);
 850         kfree(dev);
 851 }
 852
 853 static struct pci_device_id cx8802_pci_tbl[] = {
 854         {
 855                 .vendor       = 0x14f1,
 856                 .device       = 0x8802,
 857                 .subvendor    = PCI_ANY_ID,
 858                 .subdevice    = PCI_ANY_ID,
 859         },{
 860                 /* --- end of list --- */
 861         }
 862 };
 863 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 864
 865 static struct pci_driver cx8802_pci_driver = {
 866         .name     = "cx88-mpeg driver manager",
 867         .id_table = cx8802_pci_tbl,
 868         .probe    = cx8802_probe,
 869         .remove   = __devexit_p(cx8802_remove),
 870 };
 871
 872 static int cx8802_init(void)
 873 {
 874         printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
 875                (CX88_VERSION_CODE >> 16) & 0xff,
 876                (CX88_VERSION_CODE >>  8) & 0xff,
 877                CX88_VERSION_CODE & 0xff);
 878 #ifdef SNAPSHOT
 879         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 880                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 881 #endif
 882         return pci_register_driver(&cx8802_pci_driver);
 883 }
 884
 885 static void cx8802_fini(void)
 886 {
 887         pci_unregister_driver(&cx8802_pci_driver);
 888 }
 889
 890 module_init(cx8802_init);
 891 module_exit(cx8802_fini);
 892 EXPORT_SYMBOL(cx8802_buf_prepare);
 893 EXPORT_SYMBOL(cx8802_buf_queue);
 894 EXPORT_SYMBOL(cx8802_cancel_buffers);
 895
 896 EXPORT_SYMBOL(cx8802_init_common);
 897 EXPORT_SYMBOL(cx8802_fini_common);
 898
 899 EXPORT_SYMBOL(cx8802_register_driver);
 900 EXPORT_SYMBOL(cx8802_unregister_driver);
 901 EXPORT_SYMBOL(cx8802_get_device);
 902 EXPORT_SYMBOL(cx8802_get_driver);
 903 /* ----------------------------------------------------------- */
 904 /*
 905  * Local variables:
 906  * c-basic-offset: 8
 907  * End:
 908  * 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
 909  */