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 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
  54 static void request_module_async(void *ptr)
  55 {
  56         struct cx8802_dev *dev=(struct cx8802_dev*)ptr;
  57 #else
  58 static void request_module_async(struct work_struct *work)
  59 {
  60         struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
  61 #endif
  62
  63         if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_DVB)
  64                 request_module("cx88-dvb");
  65         if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_BLACKBIRD)
  66                 request_module("cx88-blackbird");
  67 }
  68
  69 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
  70 #define request_modules(dev)
  71 #else
  72 static void request_modules(struct cx8802_dev *dev)
  73 {
  74 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
  75         INIT_WORK(&dev->request_module_wk, request_module_async, (void*)dev);
  76 #else
  77         INIT_WORK(&dev->request_module_wk, request_module_async);
  78 #endif
  79         schedule_work(&dev->request_module_wk);
  80 }
  81 #endif
  82 #else
  83 #define request_modules(dev)
  84 #endif /* CONFIG_MODULES */
  85
  86 static LIST_HEAD(cx8802_devlist);
  87 /* ------------------------------------------------------------------ */
  88
  89 static int cx8802_start_dma(struct cx8802_dev    *dev,
  90                             struct cx88_dmaqueue *q,
  91                             struct cx88_buffer   *buf)
  92 {
  93         struct cx88_core *core = dev->core;
  94
  95         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n", dev->width, dev->height, buf->vb.field);
  96
  97         /* setup fifo + format */
  98         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  99                                 dev->ts_packet_size, buf->risc.dma);
 100
 101         /* write TS length to chip */
 102         cx_write(MO_TS_LNGTH, buf->vb.width);
 103
 104         /* FIXME: this needs a review.
 105          * also: move to cx88-blackbird + cx88-dvb source files? */
 106
 107         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
 108
 109         if ( (core->active_type_id == CX88_MPEG_DVB) &&
 110                 (cx88_boards[core->board].mpeg & CX88_MPEG_DVB) ) {
 111
 112                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 113                 /* negedge driven & software reset */
 114                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 115                 udelay(100);
 116                 cx_write(MO_PINMUX_IO, 0x00);
 117                 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
 118                 switch (core->board) {
 119                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 120                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 121                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 122                 case CX88_BOARD_PCHDTV_HD5500:
 123                         cx_write(TS_SOP_STAT, 1<<13);
 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                         break;
 132                 default:
 133                         cx_write(TS_SOP_STAT, 0x00);
 134                         break;
 135                 }
 136                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 137                 udelay(100);
 138         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 139                 (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) ) {
 140                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 141                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 142
 143                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 144                 udelay(100);
 145
 146                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 147                 cx_write(TS_VALERR_CNTRL, 0x2000);
 148
 149                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 150                 udelay(100);
 151         } else {
 152                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
 153                         cx88_boards[core->board].mpeg );
 154                 return -EINVAL;
 155         }
 156
 157         /* reset counter */
 158         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 159         q->count = 1;
 160
 161         /* enable irqs */
 162         dprintk( 1, "setting the interrupt mask\n" );
 163         cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
 164         cx_set(MO_TS_INTMSK,  0x1f0011);
 165
 166         /* start dma */
 167         cx_set(MO_DEV_CNTRL2, (1<<5));
 168         cx_set(MO_TS_DMACNTRL, 0x11);
 169         return 0;
 170 }
 171
 172 static int cx8802_stop_dma(struct cx8802_dev *dev)
 173 {
 174         struct cx88_core *core = dev->core;
 175         dprintk( 1, "cx8802_stop_dma\n" );
 176
 177         /* stop dma */
 178         cx_clear(MO_TS_DMACNTRL, 0x11);
 179
 180         /* disable irqs */
 181         cx_clear(MO_PCI_INTMSK, 0x000004);
 182         cx_clear(MO_TS_INTMSK, 0x1f0011);
 183
 184         /* Reset the controller */
 185         cx_write(TS_GEN_CNTRL, 0xcd);
 186         return 0;
 187 }
 188
 189 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 190                                 struct cx88_dmaqueue *q)
 191 {
 192         struct cx88_buffer *buf;
 193         struct list_head *item;
 194
 195        dprintk( 1, "cx8802_restart_queue\n" );
 196         if (list_empty(&q->active))
 197         {
 198                struct cx88_buffer *prev;
 199                prev = NULL;
 200
 201                dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 202
 203                for (;;) {
 204                        if (list_empty(&q->queued))
 205                                return 0;
 206                        buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 207                        if (NULL == prev) {
 208                                list_del(&buf->vb.queue);
 209                                list_add_tail(&buf->vb.queue,&q->active);
 210                                cx8802_start_dma(dev, q, buf);
 211                                buf->vb.state = STATE_ACTIVE;
 212                                buf->count    = q->count++;
 213                                mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 214                                dprintk(1,"[%p/%d] restart_queue - first active\n",
 215                                        buf,buf->vb.i);
 216
 217                        } else if (prev->vb.width  == buf->vb.width  &&
 218                                   prev->vb.height == buf->vb.height &&
 219                                   prev->fmt       == buf->fmt) {
 220                                list_del(&buf->vb.queue);
 221                                list_add_tail(&buf->vb.queue,&q->active);
 222                                buf->vb.state = STATE_ACTIVE;
 223                                buf->count    = q->count++;
 224                                prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 225                                dprintk(1,"[%p/%d] restart_queue - move to active\n",
 226                                        buf,buf->vb.i);
 227                        } else {
 228                                return 0;
 229                        }
 230                        prev = buf;
 231                }
 232                 return 0;
 233         }
 234
 235         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 236         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 237                 buf, buf->vb.i);
 238         cx8802_start_dma(dev, q, buf);
 239         list_for_each(item,&q->active) {
 240                 buf = list_entry(item, struct cx88_buffer, vb.queue);
 241                 buf->count = q->count++;
 242         }
 243         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 244         return 0;
 245 }
 246
 247 /* ------------------------------------------------------------------ */
 248
 249 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 250                         struct cx88_buffer *buf, enum v4l2_field field)
 251 {
 252         int size = dev->ts_packet_size * dev->ts_packet_count;
 253         int rc;
 254
 255         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
 256         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 257                 return -EINVAL;
 258
 259         if (STATE_NEEDS_INIT == buf->vb.state) {
 260                 buf->vb.width  = dev->ts_packet_size;
 261                 buf->vb.height = dev->ts_packet_count;
 262                 buf->vb.size   = size;
 263                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 264
 265                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 266                         goto fail;
 267                 cx88_risc_databuffer(dev->pci, &buf->risc,
 268                                      buf->vb.dma.sglist,
 269                                      buf->vb.width, buf->vb.height);
 270         }
 271         buf->vb.state = STATE_PREPARED;
 272         return 0;
 273
 274  fail:
 275         cx88_free_buffer(q,buf);
 276         return rc;
 277 }
 278
 279 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 280 {
 281         struct cx88_buffer    *prev;
 282         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 283
 284         dprintk( 1, "cx8802_buf_queue\n" );
 285         /* add jump to stopper */
 286         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 287         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 288
 289         if (list_empty(&cx88q->active)) {
 290                 dprintk( 1, "queue is empty - first active\n" );
 291                 list_add_tail(&buf->vb.queue,&cx88q->active);
 292                 cx8802_start_dma(dev, cx88q, buf);
 293                 buf->vb.state = STATE_ACTIVE;
 294                 buf->count    = cx88q->count++;
 295                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 296                 dprintk(1,"[%p/%d] %s - first active\n",
 297                         buf, buf->vb.i, __FUNCTION__);
 298
 299         } else {
 300                 dprintk( 1, "queue is not empty - append to active\n" );
 301                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 302                 list_add_tail(&buf->vb.queue,&cx88q->active);
 303                 buf->vb.state = STATE_ACTIVE;
 304                 buf->count    = cx88q->count++;
 305                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 306                 dprintk( 1, "[%p/%d] %s - append to active\n",
 307                         buf, buf->vb.i, __FUNCTION__);
 308         }
 309 }
 310
 311 /* ----------------------------------------------------------- */
 312
 313 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 314 {
 315         struct cx88_dmaqueue *q = &dev->mpegq;
 316         struct cx88_buffer *buf;
 317         unsigned long flags;
 318
 319         spin_lock_irqsave(&dev->slock,flags);
 320         while (!list_empty(&q->active)) {
 321                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 322                 list_del(&buf->vb.queue);
 323                 buf->vb.state = STATE_ERROR;
 324                 wake_up(&buf->vb.done);
 325                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 326                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 327         }
 328         if (restart)
 329         {
 330                 dprintk(1, "restarting queue\n" );
 331                 cx8802_restart_queue(dev,q);
 332         }
 333         spin_unlock_irqrestore(&dev->slock,flags);
 334 }
 335
 336 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 337 {
 338         struct cx88_dmaqueue *q = &dev->mpegq;
 339
 340         dprintk( 1, "cx8802_cancel_buffers" );
 341         del_timer_sync(&q->timeout);
 342         cx8802_stop_dma(dev);
 343         do_cancel_buffers(dev,"cancel",0);
 344 }
 345
 346 static void cx8802_timeout(unsigned long data)
 347 {
 348         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 349
 350         dprintk(0, "%s\n",__FUNCTION__);
 351
 352         if (debug)
 353                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 354         cx8802_stop_dma(dev);
 355         do_cancel_buffers(dev,"timeout",1);
 356 }
 357
 358 static char *cx88_mpeg_irqs[32] = {
 359         "ts_risci1", NULL, NULL, NULL,
 360         "ts_risci2", NULL, NULL, NULL,
 361         "ts_oflow",  NULL, NULL, NULL,
 362         "ts_sync",   NULL, NULL, NULL,
 363         "opc_err", "par_err", "rip_err", "pci_abort",
 364         "ts_err?",
 365 };
 366
 367 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 368 {
 369         struct cx88_core *core = dev->core;
 370         u32 status, mask, count;
 371
 372         dprintk( 1, "cx8802_mpeg_irq\n" );
 373         status = cx_read(MO_TS_INTSTAT);
 374         mask   = cx_read(MO_TS_INTMSK);
 375         if (0 == (status & mask))
 376                 return;
 377
 378         cx_write(MO_TS_INTSTAT, status);
 379
 380         if (debug || (status & mask & ~0xff))
 381                 cx88_print_irqbits(core->name, "irq mpeg ",
 382                                    cx88_mpeg_irqs, status, mask);
 383
 384         /* risc op code error */
 385         if (status & (1 << 16)) {
 386                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 387                 cx_clear(MO_TS_DMACNTRL, 0x11);
 388                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 389         }
 390
 391         /* risc1 y */
 392         if (status & 0x01) {
 393                 dprintk( 1, "wake up\n" );
 394                 spin_lock(&dev->slock);
 395                 count = cx_read(MO_TS_GPCNT);
 396                 cx88_wakeup(dev->core, &dev->mpegq, count);
 397                 spin_unlock(&dev->slock);
 398         }
 399
 400         /* risc2 y */
 401         if (status & 0x10) {
 402                 spin_lock(&dev->slock);
 403                 cx8802_restart_queue(dev,&dev->mpegq);
 404                 spin_unlock(&dev->slock);
 405         }
 406
 407         /* other general errors */
 408         if (status & 0x1f0100) {
 409                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 410                 spin_lock(&dev->slock);
 411                 cx8802_stop_dma(dev);
 412                 cx8802_restart_queue(dev,&dev->mpegq);
 413                 spin_unlock(&dev->slock);
 414         }
 415 }
 416
 417 #define MAX_IRQ_LOOP 10
 418
 419 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 420 {
 421         struct cx8802_dev *dev = dev_id;
 422         struct cx88_core *core = dev->core;
 423         u32 status;
 424         int loop, handled = 0;
 425
 426         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 427                 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
 428                 if (0 == status)
 429                         goto out;
 430                 dprintk( 1, "cx8802_irq\n" );
 431                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 432                 dprintk( 1, "    status: %d\n", status );
 433                 handled = 1;
 434                 cx_write(MO_PCI_INTSTAT, status);
 435
 436                 if (status & core->pci_irqmask)
 437                         cx88_core_irq(core,status);
 438                 if (status & 0x04)
 439                         cx8802_mpeg_irq(dev);
 440         };
 441         if (MAX_IRQ_LOOP == loop) {
 442                 dprintk( 0, "clearing mask\n" );
 443                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 444                        core->name);
 445                 cx_write(MO_PCI_INTMSK,0);
 446         }
 447
 448  out:
 449         return IRQ_RETVAL(handled);
 450 }
 451
 452 /* ----------------------------------------------------------- */
 453 /* exported stuff                                              */
 454
 455 int cx8802_init_common(struct cx8802_dev *dev)
 456 {
 457         struct cx88_core *core = dev->core;
 458         int err;
 459
 460         /* pci init */
 461         if (pci_enable_device(dev->pci))
 462                 return -EIO;
 463         pci_set_master(dev->pci);
 464         if (!pci_dma_supported(dev->pci,0xffffffff)) {
 465                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 466                 return -EIO;
 467         }
 468
 469         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 470         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 471         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 472                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 473                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 474                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 475
 476         /* initialize driver struct */
 477         spin_lock_init(&dev->slock);
 478
 479         /* init dma queue */
 480         INIT_LIST_HEAD(&dev->mpegq.active);
 481         INIT_LIST_HEAD(&dev->mpegq.queued);
 482         dev->mpegq.timeout.function = cx8802_timeout;
 483         dev->mpegq.timeout.data     = (unsigned long)dev;
 484         init_timer(&dev->mpegq.timeout);
 485         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 486                           MO_TS_DMACNTRL,0x11,0x00);
 487
 488         /* get irq */
 489         err = request_irq(dev->pci->irq, cx8802_irq,
 490                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 491         if (err < 0) {
 492                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 493                        dev->core->name, dev->pci->irq);
 494                 return err;
 495         }
 496         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 497
 498         /* everything worked */
 499         pci_set_drvdata(dev->pci,dev);
 500         return 0;
 501 }
 502
 503 void cx8802_fini_common(struct cx8802_dev *dev)
 504 {
 505         dprintk( 2, "cx8802_fini_common\n" );
 506         cx8802_stop_dma(dev);
 507         pci_disable_device(dev->pci);
 508
 509         /* unregister stuff */
 510         free_irq(dev->pci->irq, dev);
 511         pci_set_drvdata(dev->pci, NULL);
 512
 513         /* free memory */
 514         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 515 }
 516
 517 /* ----------------------------------------------------------- */
 518
 519 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 520 {
 521         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 522         struct cx88_core *core = dev->core;
 523
 524         /* stop mpeg dma */
 525         spin_lock(&dev->slock);
 526         if (!list_empty(&dev->mpegq.active)) {
 527                 dprintk( 2, "suspend\n" );
 528                 printk("%s: suspend mpeg\n", core->name);
 529                 cx8802_stop_dma(dev);
 530                 del_timer(&dev->mpegq.timeout);
 531         }
 532         spin_unlock(&dev->slock);
 533
 534         /* FIXME -- shutdown device */
 535         cx88_shutdown(dev->core);
 536
 537         pci_save_state(pci_dev);
 538         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 539                 pci_disable_device(pci_dev);
 540                 dev->state.disabled = 1;
 541         }
 542         return 0;
 543 }
 544
 545 int cx8802_resume_common(struct pci_dev *pci_dev)
 546 {
 547         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 548         struct cx88_core *core = dev->core;
 549         int err;
 550
 551         if (dev->state.disabled) {
 552                 err=pci_enable_device(pci_dev);
 553                 if (err) {
 554                         printk(KERN_ERR "%s: can't enable device\n",
 555                                                dev->core->name);
 556                         return err;
 557                 }
 558                 dev->state.disabled = 0;
 559         }
 560         err=pci_set_power_state(pci_dev, PCI_D0);
 561         if (err) {
 562                 printk(KERN_ERR "%s: can't enable device\n",
 563                                                dev->core->name);
 564                 pci_disable_device(pci_dev);
 565                 dev->state.disabled = 1;
 566
 567                 return err;
 568         }
 569         pci_restore_state(pci_dev);
 570
 571         /* FIXME: re-initialize hardware */
 572         cx88_reset(dev->core);
 573
 574         /* restart video+vbi capture */
 575         spin_lock(&dev->slock);
 576         if (!list_empty(&dev->mpegq.active)) {
 577                 printk("%s: resume mpeg\n", core->name);
 578                 cx8802_restart_queue(dev,&dev->mpegq);
 579         }
 580         spin_unlock(&dev->slock);
 581
 582         return 0;
 583 }
 584
 585 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 586 {
 587         int minor = iminor(inode);
 588         struct cx8802_dev *h = NULL;
 589         struct list_head *list;
 590
 591         list_for_each(list,&cx8802_devlist) {
 592                 h = list_entry(list, struct cx8802_dev, devlist);
 593                 if (h->mpeg_dev->minor == minor)
 594                         return h;
 595         }
 596
 597         return NULL;
 598 }
 599
 600 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 601 {
 602         struct cx8802_dev *h = NULL;
 603         struct cx8802_driver *d = NULL;
 604         struct list_head *list;
 605         struct list_head *list2;
 606
 607         list_for_each(list,&cx8802_devlist) {
 608                 h = list_entry(list, struct cx8802_dev, devlist);
 609                 if (h != dev)
 610                         continue;
 611
 612                 list_for_each(list2, &h->drvlist.devlist) {
 613                         d = list_entry(list2, struct cx8802_driver, devlist);
 614
 615                         /* only unregister the correct driver type */
 616                         if (d->type_id == btype) {
 617                                 return d;
 618                         }
 619                 }
 620         }
 621
 622         return NULL;
 623 }
 624
 625 /* Driver asked for hardware access. */
 626 int cx8802_request_acquire(struct cx8802_driver *drv)
 627 {
 628         struct cx88_core *core = drv->core;
 629
 630         /* Fail a request for hardware if the device is busy. */
 631         if (core->active_type_id != CX88_BOARD_NONE)
 632                 return -EBUSY;
 633
 634         if (drv->advise_acquire)
 635         {
 636                 core->active_type_id = drv->type_id;
 637                 drv->advise_acquire(drv);
 638
 639                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 640         }
 641
 642         return 0;
 643 }
 644
 645 /* Driver asked to release hardware. */
 646 int cx8802_request_release(struct cx8802_driver *drv)
 647 {
 648         struct cx88_core *core = drv->core;
 649
 650         if (drv->advise_release)
 651         {
 652                 drv->advise_release(drv);
 653                 core->active_type_id = CX88_BOARD_NONE;
 654                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 655         }
 656
 657         return 0;
 658 }
 659
 660 static int cx8802_check_driver(struct cx8802_driver *drv)
 661 {
 662         if (drv == NULL)
 663                 return -ENODEV;
 664
 665         if ((drv->type_id != CX88_MPEG_DVB) &&
 666                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 667                 return -EINVAL;
 668
 669         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 670                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 671                 return -EINVAL;
 672
 673         if ((drv->probe == NULL) ||
 674                 (drv->remove == NULL) ||
 675                 (drv->advise_acquire == NULL) ||
 676                 (drv->advise_release == NULL))
 677                 return -EINVAL;
 678
 679         return 0;
 680 }
 681
 682 int cx8802_register_driver(struct cx8802_driver *drv)
 683 {
 684         struct cx8802_dev *h;
 685         struct cx8802_driver *driver;
 686         struct list_head *list;
 687         int err = 0, i = 0;
 688
 689         printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
 690                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 691                 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 692
 693         if ((err = cx8802_check_driver(drv)) != 0) {
 694                 printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
 695                 return err;
 696         }
 697
 698         list_for_each(list,&cx8802_devlist) {
 699                 h = list_entry(list, struct cx8802_dev, devlist);
 700
 701                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 702                         h->core->name,h->pci->subsystem_vendor,
 703                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 704                         h->core->board);
 705
 706                 /* Bring up a new struct for each driver instance */
 707                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 708                 if (driver == NULL)
 709                         return -ENOMEM;
 710
 711                 /* Snapshot of the driver registration data */
 712                 drv->core = h->core;
 713                 drv->suspend = cx8802_suspend_common;
 714                 drv->resume = cx8802_resume_common;
 715                 drv->request_acquire = cx8802_request_acquire;
 716                 drv->request_release = cx8802_request_release;
 717                 memcpy(driver, drv, sizeof(*driver));
 718
 719                 err = drv->probe(driver);
 720                 if (err == 0) {
 721                         i++;
 722                         mutex_lock(&drv->core->lock);
 723                         list_add_tail(&driver->devlist,&h->drvlist.devlist);
 724                         mutex_unlock(&drv->core->lock);
 725                 } else {
 726                         printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
 727                 }
 728
 729         }
 730         if (i == 0)
 731                 err = -ENODEV;
 732         else
 733                 err = 0;
 734
 735         return err;
 736 }
 737
 738 int cx8802_unregister_driver(struct cx8802_driver *drv)
 739 {
 740         struct cx8802_dev *h;
 741         struct cx8802_driver *d;
 742         struct list_head *list;
 743         struct list_head *list2, *q;
 744         int err = 0, i = 0;
 745
 746         printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
 747                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");
 748
 749         list_for_each(list,&cx8802_devlist) {
 750                 i++;
 751                 h = list_entry(list, struct cx8802_dev, devlist);
 752
 753                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 754                         h->core->name,h->pci->subsystem_vendor,
 755                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 756                         h->core->board);
 757
 758                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
 759                         d = list_entry(list2, struct cx8802_driver, devlist);
 760
 761                         /* only unregister the correct driver type */
 762                         if (d->type_id != drv->type_id)
 763                                 continue;
 764
 765                         err = d->remove(d);
 766                         if (err == 0) {
 767                                 mutex_lock(&drv->core->lock);
 768                                 list_del(list2);
 769                                 mutex_unlock(&drv->core->lock);
 770                         } else
 771                                 printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);
 772
 773                 }
 774
 775         }
 776
 777         return err;
 778 }
 779
 780 /* ----------------------------------------------------------- */
 781 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 782                                const struct pci_device_id *pci_id)
 783 {
 784         struct cx8802_dev *dev;
 785         struct cx88_core  *core;
 786         int err;
 787
 788         /* general setup */
 789         core = cx88_core_get(pci_dev);
 790         if (NULL == core)
 791                 return -EINVAL;
 792
 793         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 794
 795         err = -ENODEV;
 796         if (!cx88_boards[core->board].mpeg)
 797                 goto fail_core;
 798
 799         err = -ENOMEM;
 800         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 801         if (NULL == dev)
 802                 goto fail_core;
 803         dev->pci = pci_dev;
 804         dev->core = core;
 805
 806         err = cx8802_init_common(dev);
 807         if (err != 0)
 808                 goto fail_free;
 809
 810         INIT_LIST_HEAD(&dev->drvlist.devlist);
 811         list_add_tail(&dev->devlist,&cx8802_devlist);
 812
 813         /* Maintain a reference so cx88-video can query the 8802 device. */
 814         core->dvbdev = dev;
 815
 816         /* now autoload cx88-dvb or cx88-blackbird */
 817         request_modules(dev);
 818         return 0;
 819
 820  fail_free:
 821         kfree(dev);
 822  fail_core:
 823         cx88_core_put(core,pci_dev);
 824         return err;
 825 }
 826
 827 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 828 {
 829         struct cx8802_dev *dev;
 830         struct cx8802_driver *h;
 831         struct list_head *list;
 832
 833         dev = pci_get_drvdata(pci_dev);
 834
 835         dprintk( 1, "%s\n", __FUNCTION__);
 836
 837         list_for_each(list,&dev->drvlist.devlist) {
 838                 h = list_entry(list, struct cx8802_driver, devlist);
 839                 dprintk( 1, " ->driver\n");
 840                 if (h->remove == NULL) {
 841                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
 842                         continue;
 843                 }
 844                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
 845                 cx8802_unregister_driver(h);
 846                 list_del(&dev->drvlist.devlist);
 847         }
 848
 849         /* Destroy any 8802 reference. */
 850         dev->core->dvbdev = NULL;
 851
 852         /* common */
 853         cx8802_fini_common(dev);
 854         cx88_core_put(dev->core,dev->pci);
 855         kfree(dev);
 856 }
 857
 858 static struct pci_device_id cx8802_pci_tbl[] = {
 859         {
 860                 .vendor       = 0x14f1,
 861                 .device       = 0x8802,
 862                 .subvendor    = PCI_ANY_ID,
 863                 .subdevice    = PCI_ANY_ID,
 864         },{
 865                 /* --- end of list --- */
 866         }
 867 };
 868 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 869
 870 static struct pci_driver cx8802_pci_driver = {
 871         .name     = "cx88-mpeg driver manager",
 872         .id_table = cx8802_pci_tbl,
 873         .probe    = cx8802_probe,
 874         .remove   = __devexit_p(cx8802_remove),
 875 };
 876
 877 static int cx8802_init(void)
 878 {
 879         printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
 880                (CX88_VERSION_CODE >> 16) & 0xff,
 881                (CX88_VERSION_CODE >>  8) & 0xff,
 882                CX88_VERSION_CODE & 0xff);
 883 #ifdef SNAPSHOT
 884         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 885                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 886 #endif
 887         return pci_register_driver(&cx8802_pci_driver);
 888 }
 889
 890 static void cx8802_fini(void)
 891 {
 892         pci_unregister_driver(&cx8802_pci_driver);
 893 }
 894
 895 module_init(cx8802_init);
 896 module_exit(cx8802_fini);
 897 EXPORT_SYMBOL(cx8802_buf_prepare);
 898 EXPORT_SYMBOL(cx8802_buf_queue);
 899 EXPORT_SYMBOL(cx8802_cancel_buffers);
 900
 901 EXPORT_SYMBOL(cx8802_init_common);
 902 EXPORT_SYMBOL(cx8802_fini_common);
 903
 904 EXPORT_SYMBOL(cx8802_register_driver);
 905 EXPORT_SYMBOL(cx8802_unregister_driver);
 906 EXPORT_SYMBOL(cx8802_get_device);
 907 EXPORT_SYMBOL(cx8802_get_driver);
 908 /* ----------------------------------------------------------- */
 909 /*
 910  * Local variables:
 911  * c-basic-offset: 8
 912  * End:
 913  * 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
 914  */