git.oblomov.eu Git - 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/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 = 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
  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", dev->width, dev->height, buf->vb.field);
  83
  84         /* setup fifo + format */
  85         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  86                                 dev->ts_packet_size, buf->risc.dma);
  87
  88         /* write TS length to chip */
  89         cx_write(MO_TS_LNGTH, buf->vb.width);
  90
  91         /* FIXME: this needs a review.
  92          * also: move to cx88-blackbird + cx88-dvb source files? */
  93
  94         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
  95
  96         if ( (core->active_type_id == CX88_MPEG_DVB) &&
  97                 (core->board.mpeg & CX88_MPEG_DVB) ) {
  98
  99                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 100                 /* negedge driven & software reset */
 101                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 102                 udelay(100);
 103                 cx_write(MO_PINMUX_IO, 0x00);
 104                 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
 105                 switch (core->boardnr) {
 106                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 107                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 108                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 109                 case CX88_BOARD_PCHDTV_HD5500:
 110                         cx_write(TS_SOP_STAT, 1<<13);
 111                         break;
 112                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 113                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 114                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 115                         udelay(100);
 116                         break;
 117                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 118                         break;
 119                 default:
 120                         cx_write(TS_SOP_STAT, 0x00);
 121                         break;
 122                 }
 123                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 124                 udelay(100);
 125         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 126                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 127                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 128                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 129
 130                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 131                 udelay(100);
 132
 133                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 134                 cx_write(TS_VALERR_CNTRL, 0x2000);
 135
 136                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 137                 udelay(100);
 138         } else {
 139                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
 140                         core->board.mpeg );
 141                 return -EINVAL;
 142         }
 143
 144         /* reset counter */
 145         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 146         q->count = 1;
 147
 148         /* enable irqs */
 149         dprintk( 1, "setting the interrupt mask\n" );
 150         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 151         cx_set(MO_TS_INTMSK,  0x1f0011);
 152
 153         /* start dma */
 154         cx_set(MO_DEV_CNTRL2, (1<<5));
 155         cx_set(MO_TS_DMACNTRL, 0x11);
 156         return 0;
 157 }
 158
 159 static int cx8802_stop_dma(struct cx8802_dev *dev)
 160 {
 161         struct cx88_core *core = dev->core;
 162         dprintk( 1, "cx8802_stop_dma\n" );
 163
 164         /* stop dma */
 165         cx_clear(MO_TS_DMACNTRL, 0x11);
 166
 167         /* disable irqs */
 168         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 169         cx_clear(MO_TS_INTMSK, 0x1f0011);
 170
 171         /* Reset the controller */
 172         cx_write(TS_GEN_CNTRL, 0xcd);
 173         return 0;
 174 }
 175
 176 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 177                                 struct cx88_dmaqueue *q)
 178 {
 179         struct cx88_buffer *buf;
 180         struct list_head *item;
 181
 182         dprintk( 1, "cx8802_restart_queue\n" );
 183         if (list_empty(&q->active))
 184         {
 185                 struct cx88_buffer *prev;
 186                 prev = NULL;
 187
 188                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 189
 190                 for (;;) {
 191                         if (list_empty(&q->queued))
 192                                 return 0;
 193                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 194                         if (NULL == prev) {
 195                                 list_del(&buf->vb.queue);
 196                                 list_add_tail(&buf->vb.queue,&q->active);
 197                                 cx8802_start_dma(dev, q, buf);
 198                                 buf->vb.state = STATE_ACTIVE;
 199                                 buf->count    = q->count++;
 200                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 201                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 202                                         buf,buf->vb.i);
 203
 204                         } else if (prev->vb.width  == buf->vb.width  &&
 205                                    prev->vb.height == buf->vb.height &&
 206                                    prev->fmt       == buf->fmt) {
 207                                 list_del(&buf->vb.queue);
 208                                 list_add_tail(&buf->vb.queue,&q->active);
 209                                 buf->vb.state = STATE_ACTIVE;
 210                                 buf->count    = q->count++;
 211                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 212                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 213                                         buf,buf->vb.i);
 214                         } else {
 215                                 return 0;
 216                         }
 217                         prev = buf;
 218                 }
 219                 return 0;
 220         }
 221
 222         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 223         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 224                 buf, buf->vb.i);
 225         cx8802_start_dma(dev, q, buf);
 226         list_for_each(item,&q->active) {
 227                 buf = list_entry(item, struct cx88_buffer, vb.queue);
 228                 buf->count = q->count++;
 229         }
 230         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 231         return 0;
 232 }
 233
 234 /* ------------------------------------------------------------------ */
 235
 236 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 237                         struct cx88_buffer *buf, enum v4l2_field field)
 238 {
 239         int size = dev->ts_packet_size * dev->ts_packet_count;
 240         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 241         int rc;
 242
 243         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
 244         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 245                 return -EINVAL;
 246
 247         if (STATE_NEEDS_INIT == buf->vb.state) {
 248                 buf->vb.width  = dev->ts_packet_size;
 249                 buf->vb.height = dev->ts_packet_count;
 250                 buf->vb.size   = size;
 251                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 252
 253                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 254                         goto fail;
 255                 cx88_risc_databuffer(dev->pci, &buf->risc,
 256                                      dma->sglist,
 257                                      buf->vb.width, buf->vb.height, 0);
 258         }
 259         buf->vb.state = STATE_PREPARED;
 260         return 0;
 261
 262  fail:
 263         cx88_free_buffer(q,buf);
 264         return rc;
 265 }
 266
 267 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 268 {
 269         struct cx88_buffer    *prev;
 270         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 271
 272         dprintk( 1, "cx8802_buf_queue\n" );
 273         /* add jump to stopper */
 274         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 275         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 276
 277         if (list_empty(&cx88q->active)) {
 278                 dprintk( 1, "queue is empty - first active\n" );
 279                 list_add_tail(&buf->vb.queue,&cx88q->active);
 280                 cx8802_start_dma(dev, cx88q, buf);
 281                 buf->vb.state = STATE_ACTIVE;
 282                 buf->count    = cx88q->count++;
 283                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 284                 dprintk(1,"[%p/%d] %s - first active\n",
 285                         buf, buf->vb.i, __FUNCTION__);
 286
 287         } else {
 288                 dprintk( 1, "queue is not empty - append to active\n" );
 289                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 290                 list_add_tail(&buf->vb.queue,&cx88q->active);
 291                 buf->vb.state = STATE_ACTIVE;
 292                 buf->count    = cx88q->count++;
 293                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 294                 dprintk( 1, "[%p/%d] %s - append to active\n",
 295                         buf, buf->vb.i, __FUNCTION__);
 296         }
 297 }
 298
 299 /* ----------------------------------------------------------- */
 300
 301 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 302 {
 303         struct cx88_dmaqueue *q = &dev->mpegq;
 304         struct cx88_buffer *buf;
 305         unsigned long flags;
 306
 307         spin_lock_irqsave(&dev->slock,flags);
 308         while (!list_empty(&q->active)) {
 309                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 310                 list_del(&buf->vb.queue);
 311                 buf->vb.state = STATE_ERROR;
 312                 wake_up(&buf->vb.done);
 313                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 314                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 315         }
 316         if (restart)
 317         {
 318                 dprintk(1, "restarting queue\n" );
 319                 cx8802_restart_queue(dev,q);
 320         }
 321         spin_unlock_irqrestore(&dev->slock,flags);
 322 }
 323
 324 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 325 {
 326         struct cx88_dmaqueue *q = &dev->mpegq;
 327
 328         dprintk( 1, "cx8802_cancel_buffers" );
 329         del_timer_sync(&q->timeout);
 330         cx8802_stop_dma(dev);
 331         do_cancel_buffers(dev,"cancel",0);
 332 }
 333
 334 static void cx8802_timeout(unsigned long data)
 335 {
 336         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 337
 338         dprintk(1, "%s\n",__FUNCTION__);
 339
 340         if (debug)
 341                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 342         cx8802_stop_dma(dev);
 343         do_cancel_buffers(dev,"timeout",1);
 344 }
 345
 346 static char *cx88_mpeg_irqs[32] = {
 347         "ts_risci1", NULL, NULL, NULL,
 348         "ts_risci2", NULL, NULL, NULL,
 349         "ts_oflow",  NULL, NULL, NULL,
 350         "ts_sync",   NULL, NULL, NULL,
 351         "opc_err", "par_err", "rip_err", "pci_abort",
 352         "ts_err?",
 353 };
 354
 355 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 356 {
 357         struct cx88_core *core = dev->core;
 358         u32 status, mask, count;
 359
 360         dprintk( 1, "cx8802_mpeg_irq\n" );
 361         status = cx_read(MO_TS_INTSTAT);
 362         mask   = cx_read(MO_TS_INTMSK);
 363         if (0 == (status & mask))
 364                 return;
 365
 366         cx_write(MO_TS_INTSTAT, status);
 367
 368         if (debug || (status & mask & ~0xff))
 369                 cx88_print_irqbits(core->name, "irq mpeg ",
 370                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 371                                    status, mask);
 372
 373         /* risc op code error */
 374         if (status & (1 << 16)) {
 375                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 376                 cx_clear(MO_TS_DMACNTRL, 0x11);
 377                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 378         }
 379
 380         /* risc1 y */
 381         if (status & 0x01) {
 382                 dprintk( 1, "wake up\n" );
 383                 spin_lock(&dev->slock);
 384                 count = cx_read(MO_TS_GPCNT);
 385                 cx88_wakeup(dev->core, &dev->mpegq, count);
 386                 spin_unlock(&dev->slock);
 387         }
 388
 389         /* risc2 y */
 390         if (status & 0x10) {
 391                 spin_lock(&dev->slock);
 392                 cx8802_restart_queue(dev,&dev->mpegq);
 393                 spin_unlock(&dev->slock);
 394         }
 395
 396         /* other general errors */
 397         if (status & 0x1f0100) {
 398                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 399                 spin_lock(&dev->slock);
 400                 cx8802_stop_dma(dev);
 401                 cx8802_restart_queue(dev,&dev->mpegq);
 402                 spin_unlock(&dev->slock);
 403         }
 404 }
 405
 406 #define MAX_IRQ_LOOP 10
 407
 408 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 409 {
 410         struct cx8802_dev *dev = dev_id;
 411         struct cx88_core *core = dev->core;
 412         u32 status;
 413         int loop, handled = 0;
 414
 415         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 416                 status = cx_read(MO_PCI_INTSTAT) &
 417                         (core->pci_irqmask | PCI_INT_TSINT);
 418                 if (0 == status)
 419                         goto out;
 420                 dprintk( 1, "cx8802_irq\n" );
 421                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 422                 dprintk( 1, "    status: %d\n", status );
 423                 handled = 1;
 424                 cx_write(MO_PCI_INTSTAT, status);
 425
 426                 if (status & core->pci_irqmask)
 427                         cx88_core_irq(core,status);
 428                 if (status & PCI_INT_TSINT)
 429                         cx8802_mpeg_irq(dev);
 430         };
 431         if (MAX_IRQ_LOOP == loop) {
 432                 dprintk( 0, "clearing mask\n" );
 433                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 434                        core->name);
 435                 cx_write(MO_PCI_INTMSK,0);
 436         }
 437
 438  out:
 439         return IRQ_RETVAL(handled);
 440 }
 441
 442 /* ----------------------------------------------------------- */
 443 /* exported stuff                                              */
 444
 445 int cx8802_init_common(struct cx8802_dev *dev)
 446 {
 447         struct cx88_core *core = dev->core;
 448         int err;
 449
 450         /* pci init */
 451         if (pci_enable_device(dev->pci))
 452                 return -EIO;
 453         pci_set_master(dev->pci);
 454         if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
 455                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 456                 return -EIO;
 457         }
 458
 459         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 460         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 461         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 462                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 463                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 464                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 465
 466         /* initialize driver struct */
 467         spin_lock_init(&dev->slock);
 468
 469         /* init dma queue */
 470         INIT_LIST_HEAD(&dev->mpegq.active);
 471         INIT_LIST_HEAD(&dev->mpegq.queued);
 472         dev->mpegq.timeout.function = cx8802_timeout;
 473         dev->mpegq.timeout.data     = (unsigned long)dev;
 474         init_timer(&dev->mpegq.timeout);
 475         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 476                           MO_TS_DMACNTRL,0x11,0x00);
 477
 478         /* get irq */
 479         err = request_irq(dev->pci->irq, cx8802_irq,
 480                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 481         if (err < 0) {
 482                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 483                        dev->core->name, dev->pci->irq);
 484                 return err;
 485         }
 486         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 487
 488         /* everything worked */
 489         pci_set_drvdata(dev->pci,dev);
 490         return 0;
 491 }
 492
 493 void cx8802_fini_common(struct cx8802_dev *dev)
 494 {
 495         dprintk( 2, "cx8802_fini_common\n" );
 496         cx8802_stop_dma(dev);
 497         pci_disable_device(dev->pci);
 498
 499         /* unregister stuff */
 500         free_irq(dev->pci->irq, dev);
 501         pci_set_drvdata(dev->pci, NULL);
 502
 503         /* free memory */
 504         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 505 }
 506
 507 /* ----------------------------------------------------------- */
 508
 509 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 510 {
 511         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 512         struct cx88_core *core = dev->core;
 513
 514         /* stop mpeg dma */
 515         spin_lock(&dev->slock);
 516         if (!list_empty(&dev->mpegq.active)) {
 517                 dprintk( 2, "suspend\n" );
 518                 printk("%s: suspend mpeg\n", core->name);
 519                 cx8802_stop_dma(dev);
 520                 del_timer(&dev->mpegq.timeout);
 521         }
 522         spin_unlock(&dev->slock);
 523
 524         /* FIXME -- shutdown device */
 525         cx88_shutdown(dev->core);
 526
 527         pci_save_state(pci_dev);
 528         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 529                 pci_disable_device(pci_dev);
 530                 dev->state.disabled = 1;
 531         }
 532         return 0;
 533 }
 534
 535 int cx8802_resume_common(struct pci_dev *pci_dev)
 536 {
 537         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 538         struct cx88_core *core = dev->core;
 539         int err;
 540
 541         if (dev->state.disabled) {
 542                 err=pci_enable_device(pci_dev);
 543                 if (err) {
 544                         printk(KERN_ERR "%s: can't enable device\n",
 545                                                dev->core->name);
 546                         return err;
 547                 }
 548                 dev->state.disabled = 0;
 549         }
 550         err=pci_set_power_state(pci_dev, PCI_D0);
 551         if (err) {
 552                 printk(KERN_ERR "%s: can't enable device\n",
 553                                                dev->core->name);
 554                 pci_disable_device(pci_dev);
 555                 dev->state.disabled = 1;
 556
 557                 return err;
 558         }
 559         pci_restore_state(pci_dev);
 560
 561         /* FIXME: re-initialize hardware */
 562         cx88_reset(dev->core);
 563
 564         /* restart video+vbi capture */
 565         spin_lock(&dev->slock);
 566         if (!list_empty(&dev->mpegq.active)) {
 567                 printk("%s: resume mpeg\n", core->name);
 568                 cx8802_restart_queue(dev,&dev->mpegq);
 569         }
 570         spin_unlock(&dev->slock);
 571
 572         return 0;
 573 }
 574
 575 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 576 {
 577         int minor = iminor(inode);
 578         struct cx8802_dev *h = NULL;
 579         struct list_head *list;
 580
 581         list_for_each(list,&cx8802_devlist) {
 582                 h = list_entry(list, struct cx8802_dev, devlist);
 583                 if (h->mpeg_dev && h->mpeg_dev->minor == minor)
 584                         return h;
 585         }
 586
 587         return NULL;
 588 }
 589
 590 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 591 {
 592         struct cx8802_dev *h = NULL;
 593         struct cx8802_driver *d = NULL;
 594         struct list_head *list;
 595         struct list_head *list2;
 596
 597         list_for_each(list,&cx8802_devlist) {
 598                 h = list_entry(list, struct cx8802_dev, devlist);
 599                 if (h != dev)
 600                         continue;
 601
 602                 list_for_each(list2, &h->drvlist.devlist) {
 603                         d = list_entry(list2, struct cx8802_driver, devlist);
 604
 605                         /* only unregister the correct driver type */
 606                         if (d->type_id == btype) {
 607                                 return d;
 608                         }
 609                 }
 610         }
 611
 612         return NULL;
 613 }
 614
 615 /* Driver asked for hardware access. */
 616 static int cx8802_request_acquire(struct cx8802_driver *drv)
 617 {
 618         struct cx88_core *core = drv->core;
 619
 620         /* Fail a request for hardware if the device is busy. */
 621         if (core->active_type_id != CX88_BOARD_NONE)
 622                 return -EBUSY;
 623
 624         if (drv->advise_acquire)
 625         {
 626                 core->active_type_id = drv->type_id;
 627                 drv->advise_acquire(drv);
 628
 629                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 630         }
 631
 632         return 0;
 633 }
 634
 635 /* Driver asked to release hardware. */
 636 static int cx8802_request_release(struct cx8802_driver *drv)
 637 {
 638         struct cx88_core *core = drv->core;
 639
 640         if (drv->advise_release)
 641         {
 642                 drv->advise_release(drv);
 643                 core->active_type_id = CX88_BOARD_NONE;
 644                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 645         }
 646
 647         return 0;
 648 }
 649
 650 static int cx8802_check_driver(struct cx8802_driver *drv)
 651 {
 652         if (drv == NULL)
 653                 return -ENODEV;
 654
 655         if ((drv->type_id != CX88_MPEG_DVB) &&
 656                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 657                 return -EINVAL;
 658
 659         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 660                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 661                 return -EINVAL;
 662
 663         if ((drv->probe == NULL) ||
 664                 (drv->remove == NULL) ||
 665                 (drv->advise_acquire == NULL) ||
 666                 (drv->advise_release == NULL))
 667                 return -EINVAL;
 668
 669         return 0;
 670 }
 671
 672 int cx8802_register_driver(struct cx8802_driver *drv)
 673 {
 674         struct cx8802_dev *h;
 675         struct cx8802_driver *driver;
 676         struct list_head *list;
 677         int err = 0, 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(list,&cx8802_devlist) {
 690                 h = list_entry(list, struct cx8802_dev, devlist);
 691
 692                 printk(KERN_INFO
 693                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 694                        h->core->name, h->pci->subsystem_vendor,
 695                        h->pci->subsystem_device, h->core->board.name,
 696                        h->core->boardnr);
 697
 698                 /* Bring up a new struct for each driver instance */
 699                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 700                 if (driver == NULL)
 701                         return -ENOMEM;
 702
 703                 /* Snapshot of the driver registration data */
 704                 drv->core = h->core;
 705                 drv->suspend = cx8802_suspend_common;
 706                 drv->resume = cx8802_resume_common;
 707                 drv->request_acquire = cx8802_request_acquire;
 708                 drv->request_release = cx8802_request_release;
 709                 memcpy(driver, drv, sizeof(*driver));
 710
 711                 err = drv->probe(driver);
 712                 if (err == 0) {
 713                         i++;
 714                         mutex_lock(&drv->core->lock);
 715                         list_add_tail(&driver->devlist,&h->drvlist.devlist);
 716                         mutex_unlock(&drv->core->lock);
 717                 } else {
 718                         printk(KERN_ERR
 719                                "%s/2: cx8802 probe failed, err = %d\n",
 720                                h->core->name, err);
 721                 }
 722
 723         }
 724         if (i == 0)
 725                 err = -ENODEV;
 726         else
 727                 err = 0;
 728
 729         return err;
 730 }
 731
 732 int cx8802_unregister_driver(struct cx8802_driver *drv)
 733 {
 734         struct cx8802_dev *h;
 735         struct cx8802_driver *d;
 736         struct list_head *list;
 737         struct list_head *list2, *q;
 738         int err = 0, i = 0;
 739
 740         printk(KERN_INFO
 741                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 742                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 743                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 744
 745         list_for_each(list,&cx8802_devlist) {
 746                 i++;
 747                 h = list_entry(list, struct cx8802_dev, devlist);
 748
 749                 printk(KERN_INFO
 750                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 751                        h->core->name, h->pci->subsystem_vendor,
 752                        h->pci->subsystem_device, h->core->board.name,
 753                        h->core->boardnr);
 754
 755                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
 756                         d = list_entry(list2, struct cx8802_driver, devlist);
 757
 758                         /* only unregister the correct driver type */
 759                         if (d->type_id != drv->type_id)
 760                                 continue;
 761
 762                         err = d->remove(d);
 763                         if (err == 0) {
 764                                 mutex_lock(&drv->core->lock);
 765                                 list_del(list2);
 766                                 mutex_unlock(&drv->core->lock);
 767                         } else
 768                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 769                                        "failed (%d)\n", h->core->name, err);
 770
 771                 }
 772
 773         }
 774
 775         return err;
 776 }
 777
 778 /* ----------------------------------------------------------- */
 779 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 780                                const struct pci_device_id *pci_id)
 781 {
 782         struct cx8802_dev *dev;
 783         struct cx88_core  *core;
 784         int err;
 785
 786         /* general setup */
 787         core = cx88_core_get(pci_dev);
 788         if (NULL == core)
 789                 return -EINVAL;
 790
 791         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 792
 793         err = -ENODEV;
 794         if (!core->board.mpeg)
 795                 goto fail_core;
 796
 797         err = -ENOMEM;
 798         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 799         if (NULL == dev)
 800                 goto fail_core;
 801         dev->pci = pci_dev;
 802         dev->core = core;
 803
 804         err = cx8802_init_common(dev);
 805         if (err != 0)
 806                 goto fail_free;
 807
 808         INIT_LIST_HEAD(&dev->drvlist.devlist);
 809         list_add_tail(&dev->devlist,&cx8802_devlist);
 810
 811         /* Maintain a reference so cx88-video can query the 8802 device. */
 812         core->dvbdev = dev;
 813
 814         /* now autoload cx88-dvb or cx88-blackbird */
 815         request_modules(dev);
 816         return 0;
 817
 818  fail_free:
 819         kfree(dev);
 820  fail_core:
 821         cx88_core_put(core,pci_dev);
 822         return err;
 823 }
 824
 825 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 826 {
 827         struct cx8802_dev *dev;
 828         struct cx8802_driver *h;
 829         struct list_head *list;
 830
 831         dev = pci_get_drvdata(pci_dev);
 832
 833         dprintk( 1, "%s\n", __FUNCTION__);
 834
 835         list_for_each(list,&dev->drvlist.devlist) {
 836                 h = list_entry(list, struct cx8802_driver, devlist);
 837                 dprintk( 1, " ->driver\n");
 838                 if (h->remove == NULL) {
 839                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
 840                         continue;
 841                 }
 842                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
 843                 cx8802_unregister_driver(h);
 844                 list_del(&dev->drvlist.devlist);
 845         }
 846
 847         /* Destroy any 8802 reference. */
 848         dev->core->dvbdev = NULL;
 849
 850         /* common */
 851         cx8802_fini_common(dev);
 852         cx88_core_put(dev->core,dev->pci);
 853         kfree(dev);
 854 }
 855
 856 static struct pci_device_id cx8802_pci_tbl[] = {
 857         {
 858                 .vendor       = 0x14f1,
 859                 .device       = 0x8802,
 860                 .subvendor    = PCI_ANY_ID,
 861                 .subdevice    = PCI_ANY_ID,
 862         },{
 863                 /* --- end of list --- */
 864         }
 865 };
 866 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 867
 868 static struct pci_driver cx8802_pci_driver = {
 869         .name     = "cx88-mpeg driver manager",
 870         .id_table = cx8802_pci_tbl,
 871         .probe    = cx8802_probe,
 872         .remove   = __devexit_p(cx8802_remove),
 873 };
 874
 875 static int cx8802_init(void)
 876 {
 877         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
 878                (CX88_VERSION_CODE >> 16) & 0xff,
 879                (CX88_VERSION_CODE >>  8) & 0xff,
 880                CX88_VERSION_CODE & 0xff);
 881 #ifdef SNAPSHOT
 882         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 883                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 884 #endif
 885         return pci_register_driver(&cx8802_pci_driver);
 886 }
 887
 888 static void cx8802_fini(void)
 889 {
 890         pci_unregister_driver(&cx8802_pci_driver);
 891 }
 892
 893 module_init(cx8802_init);
 894 module_exit(cx8802_fini);
 895 EXPORT_SYMBOL(cx8802_buf_prepare);
 896 EXPORT_SYMBOL(cx8802_buf_queue);
 897 EXPORT_SYMBOL(cx8802_cancel_buffers);
 898
 899 EXPORT_SYMBOL(cx8802_init_common);
 900 EXPORT_SYMBOL(cx8802_fini_common);
 901
 902 EXPORT_SYMBOL(cx8802_register_driver);
 903 EXPORT_SYMBOL(cx8802_unregister_driver);
 904 EXPORT_SYMBOL(cx8802_get_device);
 905 EXPORT_SYMBOL(cx8802_get_driver);
 906 /* ----------------------------------------------------------- */
 907 /*
 908  * Local variables:
 909  * c-basic-offset: 8
 910  * End:
 911  * 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
 912  */