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/slab.h>
  27 #include <linux/init.h>
  28 #include <linux/device.h>
  29 #include <linux/dma-mapping.h>
  30 #include <linux/interrupt.h>
  31 #include <asm/delay.h>
  32
  33 #include "cx88.h"
  34
  35 /* ------------------------------------------------------------------ */
  36
  37 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
  38 MODULE_AUTHOR("Jelle Foks <jelle@foks.us>");
  39 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
  40 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
  41 MODULE_LICENSE("GPL");
  42 MODULE_VERSION(CX88_VERSION);
  43
  44 static unsigned int debug;
  45 module_param(debug,int,0644);
  46 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
  47
  48 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  49         printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
  50
  51 #define mpeg_dbg(level,fmt, arg...)     if (debug >= level) \
  52         printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
  53
  54 #if defined(CONFIG_MODULES) && defined(MODULE)
  55 static void request_module_async(struct work_struct *work)
  56 {
  57         struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
  58
  59         if (dev->core->board.mpeg & CX88_MPEG_DVB)
  60                 request_module("cx88-dvb");
  61         if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
  62                 request_module("cx88-blackbird");
  63 }
  64
  65 static void request_modules(struct cx8802_dev *dev)
  66 {
  67         INIT_WORK(&dev->request_module_wk, request_module_async);
  68         schedule_work(&dev->request_module_wk);
  69 }
  70
  71 static void flush_request_modules(struct cx8802_dev *dev)
  72 {
  73         flush_work_sync(&dev->request_module_wk);
  74 }
  75 #else
  76 #define request_modules(dev)
  77 #define flush_request_modules(dev)
  78 #endif /* CONFIG_MODULES */
  79
  80
  81 static LIST_HEAD(cx8802_devlist);
  82 static DEFINE_MUTEX(cx8802_mutex);
  83 /* ------------------------------------------------------------------ */
  84
  85 static int cx8802_start_dma(struct cx8802_dev    *dev,
  86                             struct cx88_dmaqueue *q,
  87                             struct cx88_buffer   *buf)
  88 {
  89         struct cx88_core *core = dev->core;
  90
  91         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
  92                 buf->vb.width, buf->vb.height, buf->vb.field);
  93
  94         /* setup fifo + format */
  95         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  96                                 dev->ts_packet_size, buf->risc.dma);
  97
  98         /* write TS length to chip */
  99         cx_write(MO_TS_LNGTH, buf->vb.width);
 100
 101         /* FIXME: this needs a review.
 102          * also: move to cx88-blackbird + cx88-dvb source files? */
 103
 104         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
 105
 106         if ( (core->active_type_id == CX88_MPEG_DVB) &&
 107                 (core->board.mpeg & CX88_MPEG_DVB) ) {
 108
 109                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 110                 /* negedge driven & software reset */
 111                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 112                 udelay(100);
 113                 cx_write(MO_PINMUX_IO, 0x00);
 114                 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
 115                 switch (core->boardnr) {
 116                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 117                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 118                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 119                 case CX88_BOARD_PCHDTV_HD5500:
 120                         cx_write(TS_SOP_STAT, 1<<13);
 121                         break;
 122                 case CX88_BOARD_SAMSUNG_SMT_7020:
 123                         cx_write(TS_SOP_STAT, 0x00);
 124                         break;
 125                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 126                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 127                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 128                         udelay(100);
 129                         break;
 130                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 131                         /* Enable MPEG parallel IO and video signal pins */
 132                         cx_write(MO_PINMUX_IO, 0x88);
 133                         cx_write(TS_SOP_STAT, 0);
 134                         cx_write(TS_VALERR_CNTRL, 0);
 135                         break;
 136                 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 137                         /* Enable MPEG parallel IO and video signal pins */
 138                         cx_write(MO_PINMUX_IO, 0x88);
 139                         cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
 140                         dev->ts_gen_cntrl = 5;
 141                         cx_write(TS_SOP_STAT, 0);
 142                         cx_write(TS_VALERR_CNTRL, 0);
 143                         udelay(100);
 144                         break;
 145                 default:
 146                         cx_write(TS_SOP_STAT, 0x00);
 147                         break;
 148                 }
 149                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 150                 udelay(100);
 151         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 152                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 153                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 154                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 155
 156                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 157                 udelay(100);
 158
 159                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 160                 cx_write(TS_VALERR_CNTRL, 0x2000);
 161
 162                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 163                 udelay(100);
 164         } else {
 165                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
 166                         core->board.mpeg );
 167                 return -EINVAL;
 168         }
 169
 170         /* reset counter */
 171         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 172         q->count = 1;
 173
 174         /* enable irqs */
 175         dprintk( 1, "setting the interrupt mask\n" );
 176         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 177         cx_set(MO_TS_INTMSK,  0x1f0011);
 178
 179         /* start dma */
 180         cx_set(MO_DEV_CNTRL2, (1<<5));
 181         cx_set(MO_TS_DMACNTRL, 0x11);
 182         return 0;
 183 }
 184
 185 static int cx8802_stop_dma(struct cx8802_dev *dev)
 186 {
 187         struct cx88_core *core = dev->core;
 188         dprintk( 1, "cx8802_stop_dma\n" );
 189
 190         /* stop dma */
 191         cx_clear(MO_TS_DMACNTRL, 0x11);
 192
 193         /* disable irqs */
 194         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 195         cx_clear(MO_TS_INTMSK, 0x1f0011);
 196
 197         /* Reset the controller */
 198         cx_write(TS_GEN_CNTRL, 0xcd);
 199         return 0;
 200 }
 201
 202 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 203                                 struct cx88_dmaqueue *q)
 204 {
 205         struct cx88_buffer *buf;
 206
 207         dprintk( 1, "cx8802_restart_queue\n" );
 208         if (list_empty(&q->active))
 209         {
 210                 struct cx88_buffer *prev;
 211                 prev = NULL;
 212
 213                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 214
 215                 for (;;) {
 216                         if (list_empty(&q->queued))
 217                                 return 0;
 218                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 219                         if (NULL == prev) {
 220                                 list_del(&buf->vb.queue);
 221                                 list_add_tail(&buf->vb.queue,&q->active);
 222                                 cx8802_start_dma(dev, q, buf);
 223                                 buf->vb.state = VIDEOBUF_ACTIVE;
 224                                 buf->count    = q->count++;
 225                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 226                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 227                                         buf,buf->vb.i);
 228
 229                         } else if (prev->vb.width  == buf->vb.width  &&
 230                                    prev->vb.height == buf->vb.height &&
 231                                    prev->fmt       == buf->fmt) {
 232                                 list_del(&buf->vb.queue);
 233                                 list_add_tail(&buf->vb.queue,&q->active);
 234                                 buf->vb.state = VIDEOBUF_ACTIVE;
 235                                 buf->count    = q->count++;
 236                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 237                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 238                                         buf,buf->vb.i);
 239                         } else {
 240                                 return 0;
 241                         }
 242                         prev = buf;
 243                 }
 244                 return 0;
 245         }
 246
 247         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 248         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 249                 buf, buf->vb.i);
 250         cx8802_start_dma(dev, q, buf);
 251         list_for_each_entry(buf, &q->active, vb.queue)
 252                 buf->count = q->count++;
 253         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 254         return 0;
 255 }
 256
 257 /* ------------------------------------------------------------------ */
 258
 259 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 260                         struct cx88_buffer *buf, enum v4l2_field field)
 261 {
 262         int size = dev->ts_packet_size * dev->ts_packet_count;
 263         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 264         int rc;
 265
 266         dprintk(1, "%s: %p\n", __func__, buf);
 267         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 268                 return -EINVAL;
 269
 270         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 271                 buf->vb.width  = dev->ts_packet_size;
 272                 buf->vb.height = dev->ts_packet_count;
 273                 buf->vb.size   = size;
 274                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 275
 276                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 277                         goto fail;
 278                 cx88_risc_databuffer(dev->pci, &buf->risc,
 279                                      dma->sglist,
 280                                      buf->vb.width, buf->vb.height, 0);
 281         }
 282         buf->vb.state = VIDEOBUF_PREPARED;
 283         return 0;
 284
 285  fail:
 286         cx88_free_buffer(q,buf);
 287         return rc;
 288 }
 289
 290 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 291 {
 292         struct cx88_buffer    *prev;
 293         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 294
 295         dprintk( 1, "cx8802_buf_queue\n" );
 296         /* add jump to stopper */
 297         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 298         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 299
 300         if (list_empty(&cx88q->active)) {
 301                 dprintk( 1, "queue is empty - first active\n" );
 302                 list_add_tail(&buf->vb.queue,&cx88q->active);
 303                 cx8802_start_dma(dev, cx88q, buf);
 304                 buf->vb.state = VIDEOBUF_ACTIVE;
 305                 buf->count    = cx88q->count++;
 306                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 307                 dprintk(1,"[%p/%d] %s - first active\n",
 308                         buf, buf->vb.i, __func__);
 309
 310         } else {
 311                 dprintk( 1, "queue is not empty - append to active\n" );
 312                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 313                 list_add_tail(&buf->vb.queue,&cx88q->active);
 314                 buf->vb.state = VIDEOBUF_ACTIVE;
 315                 buf->count    = cx88q->count++;
 316                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 317                 dprintk( 1, "[%p/%d] %s - append to active\n",
 318                         buf, buf->vb.i, __func__);
 319         }
 320 }
 321
 322 /* ----------------------------------------------------------- */
 323
 324 static void do_cancel_buffers(struct cx8802_dev *dev, const char *reason, int restart)
 325 {
 326         struct cx88_dmaqueue *q = &dev->mpegq;
 327         struct cx88_buffer *buf;
 328         unsigned long flags;
 329
 330         spin_lock_irqsave(&dev->slock,flags);
 331         while (!list_empty(&q->active)) {
 332                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 333                 list_del(&buf->vb.queue);
 334                 buf->vb.state = VIDEOBUF_ERROR;
 335                 wake_up(&buf->vb.done);
 336                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 337                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 338         }
 339         if (restart)
 340         {
 341                 dprintk(1, "restarting queue\n" );
 342                 cx8802_restart_queue(dev,q);
 343         }
 344         spin_unlock_irqrestore(&dev->slock,flags);
 345 }
 346
 347 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 348 {
 349         struct cx88_dmaqueue *q = &dev->mpegq;
 350
 351         dprintk( 1, "cx8802_cancel_buffers" );
 352         del_timer_sync(&q->timeout);
 353         cx8802_stop_dma(dev);
 354         do_cancel_buffers(dev,"cancel",0);
 355 }
 356
 357 static void cx8802_timeout(unsigned long data)
 358 {
 359         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 360
 361         dprintk(1, "%s\n",__func__);
 362
 363         if (debug)
 364                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 365         cx8802_stop_dma(dev);
 366         do_cancel_buffers(dev,"timeout",1);
 367 }
 368
 369 static const char * cx88_mpeg_irqs[32] = {
 370         "ts_risci1", NULL, NULL, NULL,
 371         "ts_risci2", NULL, NULL, NULL,
 372         "ts_oflow",  NULL, NULL, NULL,
 373         "ts_sync",   NULL, NULL, NULL,
 374         "opc_err", "par_err", "rip_err", "pci_abort",
 375         "ts_err?",
 376 };
 377
 378 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 379 {
 380         struct cx88_core *core = dev->core;
 381         u32 status, mask, count;
 382
 383         dprintk( 1, "cx8802_mpeg_irq\n" );
 384         status = cx_read(MO_TS_INTSTAT);
 385         mask   = cx_read(MO_TS_INTMSK);
 386         if (0 == (status & mask))
 387                 return;
 388
 389         cx_write(MO_TS_INTSTAT, status);
 390
 391         if (debug || (status & mask & ~0xff))
 392                 cx88_print_irqbits(core->name, "irq mpeg ",
 393                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 394                                    status, mask);
 395
 396         /* risc op code error */
 397         if (status & (1 << 16)) {
 398                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 399                 cx_clear(MO_TS_DMACNTRL, 0x11);
 400                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 401         }
 402
 403         /* risc1 y */
 404         if (status & 0x01) {
 405                 dprintk( 1, "wake up\n" );
 406                 spin_lock(&dev->slock);
 407                 count = cx_read(MO_TS_GPCNT);
 408                 cx88_wakeup(dev->core, &dev->mpegq, count);
 409                 spin_unlock(&dev->slock);
 410         }
 411
 412         /* risc2 y */
 413         if (status & 0x10) {
 414                 spin_lock(&dev->slock);
 415                 cx8802_restart_queue(dev,&dev->mpegq);
 416                 spin_unlock(&dev->slock);
 417         }
 418
 419         /* other general errors */
 420         if (status & 0x1f0100) {
 421                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 422                 spin_lock(&dev->slock);
 423                 cx8802_stop_dma(dev);
 424                 cx8802_restart_queue(dev,&dev->mpegq);
 425                 spin_unlock(&dev->slock);
 426         }
 427 }
 428
 429 #define MAX_IRQ_LOOP 10
 430
 431 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 432 {
 433         struct cx8802_dev *dev = dev_id;
 434         struct cx88_core *core = dev->core;
 435         u32 status;
 436         int loop, handled = 0;
 437
 438         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 439                 status = cx_read(MO_PCI_INTSTAT) &
 440                         (core->pci_irqmask | PCI_INT_TSINT);
 441                 if (0 == status)
 442                         goto out;
 443                 dprintk( 1, "cx8802_irq\n" );
 444                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 445                 dprintk( 1, "    status: %d\n", status );
 446                 handled = 1;
 447                 cx_write(MO_PCI_INTSTAT, status);
 448
 449                 if (status & core->pci_irqmask)
 450                         cx88_core_irq(core,status);
 451                 if (status & PCI_INT_TSINT)
 452                         cx8802_mpeg_irq(dev);
 453         };
 454         if (MAX_IRQ_LOOP == loop) {
 455                 dprintk( 0, "clearing mask\n" );
 456                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 457                        core->name);
 458                 cx_write(MO_PCI_INTMSK,0);
 459         }
 460
 461  out:
 462         return IRQ_RETVAL(handled);
 463 }
 464
 465 static int cx8802_init_common(struct cx8802_dev *dev)
 466 {
 467         struct cx88_core *core = dev->core;
 468         int err;
 469
 470         /* pci init */
 471         if (pci_enable_device(dev->pci))
 472                 return -EIO;
 473         pci_set_master(dev->pci);
 474         if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
 475                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 476                 return -EIO;
 477         }
 478
 479         dev->pci_rev = dev->pci->revision;
 480         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 481         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 482                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 483                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 484                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 485
 486         /* initialize driver struct */
 487         spin_lock_init(&dev->slock);
 488
 489         /* init dma queue */
 490         INIT_LIST_HEAD(&dev->mpegq.active);
 491         INIT_LIST_HEAD(&dev->mpegq.queued);
 492         dev->mpegq.timeout.function = cx8802_timeout;
 493         dev->mpegq.timeout.data     = (unsigned long)dev;
 494         init_timer(&dev->mpegq.timeout);
 495         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 496                           MO_TS_DMACNTRL,0x11,0x00);
 497
 498         /* get irq */
 499         err = request_irq(dev->pci->irq, cx8802_irq,
 500                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 501         if (err < 0) {
 502                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 503                        dev->core->name, dev->pci->irq);
 504                 return err;
 505         }
 506         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 507
 508         /* everything worked */
 509         pci_set_drvdata(dev->pci,dev);
 510         return 0;
 511 }
 512
 513 static void cx8802_fini_common(struct cx8802_dev *dev)
 514 {
 515         dprintk( 2, "cx8802_fini_common\n" );
 516         cx8802_stop_dma(dev);
 517         pci_disable_device(dev->pci);
 518
 519         /* unregister stuff */
 520         free_irq(dev->pci->irq, dev);
 521         pci_set_drvdata(dev->pci, NULL);
 522
 523         /* free memory */
 524         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 525 }
 526
 527 /* ----------------------------------------------------------- */
 528
 529 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 530 {
 531         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 532         struct cx88_core *core = dev->core;
 533
 534         /* stop mpeg dma */
 535         spin_lock(&dev->slock);
 536         if (!list_empty(&dev->mpegq.active)) {
 537                 dprintk( 2, "suspend\n" );
 538                 printk("%s: suspend mpeg\n", core->name);
 539                 cx8802_stop_dma(dev);
 540                 del_timer(&dev->mpegq.timeout);
 541         }
 542         spin_unlock(&dev->slock);
 543
 544         /* FIXME -- shutdown device */
 545         cx88_shutdown(dev->core);
 546
 547         pci_save_state(pci_dev);
 548         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 549                 pci_disable_device(pci_dev);
 550                 dev->state.disabled = 1;
 551         }
 552         return 0;
 553 }
 554
 555 static int cx8802_resume_common(struct pci_dev *pci_dev)
 556 {
 557         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 558         struct cx88_core *core = dev->core;
 559         int err;
 560
 561         if (dev->state.disabled) {
 562                 err=pci_enable_device(pci_dev);
 563                 if (err) {
 564                         printk(KERN_ERR "%s: can't enable device\n",
 565                                                dev->core->name);
 566                         return err;
 567                 }
 568                 dev->state.disabled = 0;
 569         }
 570         err=pci_set_power_state(pci_dev, PCI_D0);
 571         if (err) {
 572                 printk(KERN_ERR "%s: can't enable device\n",
 573                                                dev->core->name);
 574                 pci_disable_device(pci_dev);
 575                 dev->state.disabled = 1;
 576
 577                 return err;
 578         }
 579         pci_restore_state(pci_dev);
 580
 581         /* FIXME: re-initialize hardware */
 582         cx88_reset(dev->core);
 583
 584         /* restart video+vbi capture */
 585         spin_lock(&dev->slock);
 586         if (!list_empty(&dev->mpegq.active)) {
 587                 printk("%s: resume mpeg\n", core->name);
 588                 cx8802_restart_queue(dev,&dev->mpegq);
 589         }
 590         spin_unlock(&dev->slock);
 591
 592         return 0;
 593 }
 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         unsigned int    i;
 611
 612         /* Fail a request for hardware if the device is busy. */
 613         if (core->active_type_id != CX88_BOARD_NONE &&
 614             core->active_type_id != drv->type_id)
 615                 return -EBUSY;
 616
 617         if (drv->type_id == CX88_MPEG_DVB) {
 618                 /* When switching to DVB, always set the input to the tuner */
 619                 core->last_analog_input = core->input;
 620                 core->input = 0;
 621                 for (i = 0;
 622                      i < (sizeof(core->board.input) / sizeof(struct cx88_input));
 623                      i++) {
 624                         if (core->board.input[i].type == CX88_VMUX_DVB) {
 625                                 core->input = i;
 626                                 break;
 627                         }
 628                 }
 629         }
 630
 631         if (drv->advise_acquire)
 632         {
 633                 core->active_ref++;
 634                 if (core->active_type_id == CX88_BOARD_NONE) {
 635                         core->active_type_id = drv->type_id;
 636                         drv->advise_acquire(drv);
 637                 }
 638
 639                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 640         }
 641
 642         return 0;
 643 }
 644
 645 /* Driver asked to release hardware. */
 646 static int cx8802_request_release(struct cx8802_driver *drv)
 647 {
 648         struct cx88_core *core = drv->core;
 649
 650         if (drv->advise_release && --core->active_ref == 0)
 651         {
 652                 if (drv->type_id == CX88_MPEG_DVB) {
 653                         /* If the DVB driver is releasing, reset the input
 654                            state to the last configured analog input */
 655                         core->input = core->last_analog_input;
 656                 }
 657
 658                 drv->advise_release(drv);
 659                 core->active_type_id = CX88_BOARD_NONE;
 660                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 661         }
 662
 663         return 0;
 664 }
 665
 666 static int cx8802_check_driver(struct cx8802_driver *drv)
 667 {
 668         if (drv == NULL)
 669                 return -ENODEV;
 670
 671         if ((drv->type_id != CX88_MPEG_DVB) &&
 672                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 673                 return -EINVAL;
 674
 675         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 676                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 677                 return -EINVAL;
 678
 679         if ((drv->probe == NULL) ||
 680                 (drv->remove == NULL) ||
 681                 (drv->advise_acquire == NULL) ||
 682                 (drv->advise_release == NULL))
 683                 return -EINVAL;
 684
 685         return 0;
 686 }
 687
 688 int cx8802_register_driver(struct cx8802_driver *drv)
 689 {
 690         struct cx8802_dev *dev;
 691         struct cx8802_driver *driver;
 692         int err, i = 0;
 693
 694         printk(KERN_INFO
 695                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 696                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 697                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 698
 699         if ((err = cx8802_check_driver(drv)) != 0) {
 700                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 701                 return err;
 702         }
 703
 704         mutex_lock(&cx8802_mutex);
 705
 706         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 707                 printk(KERN_INFO
 708                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 709                        dev->core->name, dev->pci->subsystem_vendor,
 710                        dev->pci->subsystem_device, dev->core->board.name,
 711                        dev->core->boardnr);
 712
 713                 /* Bring up a new struct for each driver instance */
 714                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 715                 if (driver == NULL) {
 716                         err = -ENOMEM;
 717                         goto out;
 718                 }
 719
 720                 /* Snapshot of the driver registration data */
 721                 drv->core = dev->core;
 722                 drv->suspend = cx8802_suspend_common;
 723                 drv->resume = cx8802_resume_common;
 724                 drv->request_acquire = cx8802_request_acquire;
 725                 drv->request_release = cx8802_request_release;
 726                 memcpy(driver, drv, sizeof(*driver));
 727
 728                 mutex_lock(&drv->core->lock);
 729                 err = drv->probe(driver);
 730                 if (err == 0) {
 731                         i++;
 732                         list_add_tail(&driver->drvlist, &dev->drvlist);
 733                 } else {
 734                         printk(KERN_ERR
 735                                "%s/2: cx8802 probe failed, err = %d\n",
 736                                dev->core->name, err);
 737                 }
 738                 mutex_unlock(&drv->core->lock);
 739         }
 740
 741         err = i ? 0 : -ENODEV;
 742 out:
 743         mutex_unlock(&cx8802_mutex);
 744         return err;
 745 }
 746
 747 int cx8802_unregister_driver(struct cx8802_driver *drv)
 748 {
 749         struct cx8802_dev *dev;
 750         struct cx8802_driver *d, *dtmp;
 751         int err = 0;
 752
 753         printk(KERN_INFO
 754                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 755                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 756                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 757
 758         mutex_lock(&cx8802_mutex);
 759
 760         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 761                 printk(KERN_INFO
 762                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 763                        dev->core->name, dev->pci->subsystem_vendor,
 764                        dev->pci->subsystem_device, dev->core->board.name,
 765                        dev->core->boardnr);
 766
 767                 mutex_lock(&dev->core->lock);
 768
 769                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
 770                         /* only unregister the correct driver type */
 771                         if (d->type_id != drv->type_id)
 772                                 continue;
 773
 774                         err = d->remove(d);
 775                         if (err == 0) {
 776                                 list_del(&d->drvlist);
 777                                 kfree(d);
 778                         } else
 779                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 780                                        "failed (%d)\n", dev->core->name, err);
 781                 }
 782
 783                 mutex_unlock(&dev->core->lock);
 784         }
 785
 786         mutex_unlock(&cx8802_mutex);
 787
 788         return err;
 789 }
 790
 791 /* ----------------------------------------------------------- */
 792 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 793                                const struct pci_device_id *pci_id)
 794 {
 795         struct cx8802_dev *dev;
 796         struct cx88_core  *core;
 797         int err;
 798
 799         /* general setup */
 800         core = cx88_core_get(pci_dev);
 801         if (NULL == core)
 802                 return -EINVAL;
 803
 804         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 805
 806         err = -ENODEV;
 807         if (!core->board.mpeg)
 808                 goto fail_core;
 809
 810         err = -ENOMEM;
 811         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 812         if (NULL == dev)
 813                 goto fail_core;
 814         dev->pci = pci_dev;
 815         dev->core = core;
 816
 817         /* Maintain a reference so cx88-video can query the 8802 device. */
 818         core->dvbdev = dev;
 819
 820         err = cx8802_init_common(dev);
 821         if (err != 0)
 822                 goto fail_free;
 823
 824         INIT_LIST_HEAD(&dev->drvlist);
 825         mutex_lock(&cx8802_mutex);
 826         list_add_tail(&dev->devlist,&cx8802_devlist);
 827         mutex_unlock(&cx8802_mutex);
 828
 829         /* now autoload cx88-dvb or cx88-blackbird */
 830         request_modules(dev);
 831         return 0;
 832
 833  fail_free:
 834         kfree(dev);
 835  fail_core:
 836         core->dvbdev = NULL;
 837         cx88_core_put(core,pci_dev);
 838         return err;
 839 }
 840
 841 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 842 {
 843         struct cx8802_dev *dev;
 844
 845         dev = pci_get_drvdata(pci_dev);
 846
 847         dprintk( 1, "%s\n", __func__);
 848
 849         flush_request_modules(dev);
 850
 851         mutex_lock(&dev->core->lock);
 852
 853         if (!list_empty(&dev->drvlist)) {
 854                 struct cx8802_driver *drv, *tmp;
 855                 int err;
 856
 857                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
 858                        "while cx8802 sub-drivers still loaded?!\n",
 859                        dev->core->name);
 860
 861                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
 862                         err = drv->remove(drv);
 863                         if (err == 0) {
 864                                 list_del(&drv->drvlist);
 865                         } else
 866                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 867                                        "failed (%d)\n", dev->core->name, err);
 868                         kfree(drv);
 869                 }
 870         }
 871
 872         mutex_unlock(&dev->core->lock);
 873
 874         /* Destroy any 8802 reference. */
 875         dev->core->dvbdev = NULL;
 876
 877         /* common */
 878         cx8802_fini_common(dev);
 879         cx88_core_put(dev->core,dev->pci);
 880         kfree(dev);
 881 }
 882
 883 static const struct pci_device_id cx8802_pci_tbl[] = {
 884         {
 885                 .vendor       = 0x14f1,
 886                 .device       = 0x8802,
 887                 .subvendor    = PCI_ANY_ID,
 888                 .subdevice    = PCI_ANY_ID,
 889         },{
 890                 /* --- end of list --- */
 891         }
 892 };
 893 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 894
 895 static struct pci_driver cx8802_pci_driver = {
 896         .name     = "cx88-mpeg driver manager",
 897         .id_table = cx8802_pci_tbl,
 898         .probe    = cx8802_probe,
 899         .remove   = __devexit_p(cx8802_remove),
 900 };
 901
 902 static int __init cx8802_init(void)
 903 {
 904         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %s loaded\n",
 905                CX88_VERSION);
 906         return pci_register_driver(&cx8802_pci_driver);
 907 }
 908
 909 static void __exit cx8802_fini(void)
 910 {
 911         pci_unregister_driver(&cx8802_pci_driver);
 912 }
 913
 914 module_init(cx8802_init);
 915 module_exit(cx8802_fini);
 916 EXPORT_SYMBOL(cx8802_buf_prepare);
 917 EXPORT_SYMBOL(cx8802_buf_queue);
 918 EXPORT_SYMBOL(cx8802_cancel_buffers);
 919
 920 EXPORT_SYMBOL(cx8802_register_driver);
 921 EXPORT_SYMBOL(cx8802_unregister_driver);
 922 EXPORT_SYMBOL(cx8802_get_driver);
 923 /* ----------------------------------------------------------- */
 924 /*
 925  * Local variables:
 926  * c-basic-offset: 8
 927  * End:
 928  * 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
 929  */