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
  43 static unsigned int debug;
  44 module_param(debug,int,0644);
  45 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
  46
  47 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  48         printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
  49
  50 #define mpeg_dbg(level,fmt, arg...)     if (debug >= level) \
  51         printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
  52
  53 #if defined(CONFIG_MODULES) && defined(MODULE)
  54 static void request_module_async(struct work_struct *work)
  55 {
  56         struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
  57
  58         if (dev->core->board.mpeg & CX88_MPEG_DVB)
  59                 request_module("cx88-dvb");
  60         if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
  61                 request_module("cx88-blackbird");
  62 }
  63
  64 static void request_modules(struct cx8802_dev *dev)
  65 {
  66         INIT_WORK(&dev->request_module_wk, request_module_async);
  67         schedule_work(&dev->request_module_wk);
  68 }
  69
  70 static void flush_request_modules(struct cx8802_dev *dev)
  71 {
  72         flush_work_sync(&dev->request_module_wk);
  73 }
  74 #else
  75 #define request_modules(dev)
  76 #define flush_request_modules(dev)
  77 #endif /* CONFIG_MODULES */
  78
  79
  80 static LIST_HEAD(cx8802_devlist);
  81 /* ------------------------------------------------------------------ */
  82
  83 static int cx8802_start_dma(struct cx8802_dev    *dev,
  84                             struct cx88_dmaqueue *q,
  85                             struct cx88_buffer   *buf)
  86 {
  87         struct cx88_core *core = dev->core;
  88
  89         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
  90                 buf->vb.width, buf->vb.height, buf->vb.field);
  91
  92         /* setup fifo + format */
  93         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  94                                 dev->ts_packet_size, buf->risc.dma);
  95
  96         /* write TS length to chip */
  97         cx_write(MO_TS_LNGTH, buf->vb.width);
  98
  99         /* FIXME: this needs a review.
 100          * also: move to cx88-blackbird + cx88-dvb source files? */
 101
 102         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
 103
 104         if ( (core->active_type_id == CX88_MPEG_DVB) &&
 105                 (core->board.mpeg & CX88_MPEG_DVB) ) {
 106
 107                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 108                 /* negedge driven & software reset */
 109                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 110                 udelay(100);
 111                 cx_write(MO_PINMUX_IO, 0x00);
 112                 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
 113                 switch (core->boardnr) {
 114                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 115                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 116                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 117                 case CX88_BOARD_PCHDTV_HD5500:
 118                         cx_write(TS_SOP_STAT, 1<<13);
 119                         break;
 120                 case CX88_BOARD_SAMSUNG_SMT_7020:
 121                         cx_write(TS_SOP_STAT, 0x00);
 122                         break;
 123                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 124                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 125                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 126                         udelay(100);
 127                         break;
 128                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 129                         /* Enable MPEG parallel IO and video signal pins */
 130                         cx_write(MO_PINMUX_IO, 0x88);
 131                         cx_write(TS_SOP_STAT, 0);
 132                         cx_write(TS_VALERR_CNTRL, 0);
 133                         break;
 134                 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 135                         /* Enable MPEG parallel IO and video signal pins */
 136                         cx_write(MO_PINMUX_IO, 0x88);
 137                         cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
 138                         dev->ts_gen_cntrl = 5;
 139                         cx_write(TS_SOP_STAT, 0);
 140                         cx_write(TS_VALERR_CNTRL, 0);
 141                         udelay(100);
 142                         break;
 143                 default:
 144                         cx_write(TS_SOP_STAT, 0x00);
 145                         break;
 146                 }
 147                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 148                 udelay(100);
 149         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 150                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 151                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 152                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 153
 154                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 155                 udelay(100);
 156
 157                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 158                 cx_write(TS_VALERR_CNTRL, 0x2000);
 159
 160                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 161                 udelay(100);
 162         } else {
 163                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
 164                         core->board.mpeg );
 165                 return -EINVAL;
 166         }
 167
 168         /* reset counter */
 169         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 170         q->count = 1;
 171
 172         /* enable irqs */
 173         dprintk( 1, "setting the interrupt mask\n" );
 174         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 175         cx_set(MO_TS_INTMSK,  0x1f0011);
 176
 177         /* start dma */
 178         cx_set(MO_DEV_CNTRL2, (1<<5));
 179         cx_set(MO_TS_DMACNTRL, 0x11);
 180         return 0;
 181 }
 182
 183 static int cx8802_stop_dma(struct cx8802_dev *dev)
 184 {
 185         struct cx88_core *core = dev->core;
 186         dprintk( 1, "cx8802_stop_dma\n" );
 187
 188         /* stop dma */
 189         cx_clear(MO_TS_DMACNTRL, 0x11);
 190
 191         /* disable irqs */
 192         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 193         cx_clear(MO_TS_INTMSK, 0x1f0011);
 194
 195         /* Reset the controller */
 196         cx_write(TS_GEN_CNTRL, 0xcd);
 197         return 0;
 198 }
 199
 200 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 201                                 struct cx88_dmaqueue *q)
 202 {
 203         struct cx88_buffer *buf;
 204
 205         dprintk( 1, "cx8802_restart_queue\n" );
 206         if (list_empty(&q->active))
 207         {
 208                 struct cx88_buffer *prev;
 209                 prev = NULL;
 210
 211                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 212
 213                 for (;;) {
 214                         if (list_empty(&q->queued))
 215                                 return 0;
 216                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 217                         if (NULL == prev) {
 218                                 list_del(&buf->vb.queue);
 219                                 list_add_tail(&buf->vb.queue,&q->active);
 220                                 cx8802_start_dma(dev, q, buf);
 221                                 buf->vb.state = VIDEOBUF_ACTIVE;
 222                                 buf->count    = q->count++;
 223                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 224                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 225                                         buf,buf->vb.i);
 226
 227                         } else if (prev->vb.width  == buf->vb.width  &&
 228                                    prev->vb.height == buf->vb.height &&
 229                                    prev->fmt       == buf->fmt) {
 230                                 list_del(&buf->vb.queue);
 231                                 list_add_tail(&buf->vb.queue,&q->active);
 232                                 buf->vb.state = VIDEOBUF_ACTIVE;
 233                                 buf->count    = q->count++;
 234                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 235                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 236                                         buf,buf->vb.i);
 237                         } else {
 238                                 return 0;
 239                         }
 240                         prev = buf;
 241                 }
 242                 return 0;
 243         }
 244
 245         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 246         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 247                 buf, buf->vb.i);
 248         cx8802_start_dma(dev, q, buf);
 249         list_for_each_entry(buf, &q->active, vb.queue)
 250                 buf->count = q->count++;
 251         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 252         return 0;
 253 }
 254
 255 /* ------------------------------------------------------------------ */
 256
 257 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 258                         struct cx88_buffer *buf, enum v4l2_field field)
 259 {
 260         int size = dev->ts_packet_size * dev->ts_packet_count;
 261         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 262         int rc;
 263
 264         dprintk(1, "%s: %p\n", __func__, buf);
 265         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 266                 return -EINVAL;
 267
 268         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 269                 buf->vb.width  = dev->ts_packet_size;
 270                 buf->vb.height = dev->ts_packet_count;
 271                 buf->vb.size   = size;
 272                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 273
 274                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 275                         goto fail;
 276                 cx88_risc_databuffer(dev->pci, &buf->risc,
 277                                      dma->sglist,
 278                                      buf->vb.width, buf->vb.height, 0);
 279         }
 280         buf->vb.state = VIDEOBUF_PREPARED;
 281         return 0;
 282
 283  fail:
 284         cx88_free_buffer(q,buf);
 285         return rc;
 286 }
 287
 288 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 289 {
 290         struct cx88_buffer    *prev;
 291         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 292
 293         dprintk( 1, "cx8802_buf_queue\n" );
 294         /* add jump to stopper */
 295         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 296         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 297
 298         if (list_empty(&cx88q->active)) {
 299                 dprintk( 1, "queue is empty - first active\n" );
 300                 list_add_tail(&buf->vb.queue,&cx88q->active);
 301                 cx8802_start_dma(dev, cx88q, buf);
 302                 buf->vb.state = VIDEOBUF_ACTIVE;
 303                 buf->count    = cx88q->count++;
 304                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 305                 dprintk(1,"[%p/%d] %s - first active\n",
 306                         buf, buf->vb.i, __func__);
 307
 308         } else {
 309                 dprintk( 1, "queue is not empty - append to active\n" );
 310                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 311                 list_add_tail(&buf->vb.queue,&cx88q->active);
 312                 buf->vb.state = VIDEOBUF_ACTIVE;
 313                 buf->count    = cx88q->count++;
 314                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 315                 dprintk( 1, "[%p/%d] %s - append to active\n",
 316                         buf, buf->vb.i, __func__);
 317         }
 318 }
 319
 320 /* ----------------------------------------------------------- */
 321
 322 static void do_cancel_buffers(struct cx8802_dev *dev, const char *reason, int restart)
 323 {
 324         struct cx88_dmaqueue *q = &dev->mpegq;
 325         struct cx88_buffer *buf;
 326         unsigned long flags;
 327
 328         spin_lock_irqsave(&dev->slock,flags);
 329         while (!list_empty(&q->active)) {
 330                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 331                 list_del(&buf->vb.queue);
 332                 buf->vb.state = VIDEOBUF_ERROR;
 333                 wake_up(&buf->vb.done);
 334                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 335                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 336         }
 337         if (restart)
 338         {
 339                 dprintk(1, "restarting queue\n" );
 340                 cx8802_restart_queue(dev,q);
 341         }
 342         spin_unlock_irqrestore(&dev->slock,flags);
 343 }
 344
 345 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 346 {
 347         struct cx88_dmaqueue *q = &dev->mpegq;
 348
 349         dprintk( 1, "cx8802_cancel_buffers" );
 350         del_timer_sync(&q->timeout);
 351         cx8802_stop_dma(dev);
 352         do_cancel_buffers(dev,"cancel",0);
 353 }
 354
 355 static void cx8802_timeout(unsigned long data)
 356 {
 357         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 358
 359         dprintk(1, "%s\n",__func__);
 360
 361         if (debug)
 362                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 363         cx8802_stop_dma(dev);
 364         do_cancel_buffers(dev,"timeout",1);
 365 }
 366
 367 static const char * cx88_mpeg_irqs[32] = {
 368         "ts_risci1", NULL, NULL, NULL,
 369         "ts_risci2", NULL, NULL, NULL,
 370         "ts_oflow",  NULL, NULL, NULL,
 371         "ts_sync",   NULL, NULL, NULL,
 372         "opc_err", "par_err", "rip_err", "pci_abort",
 373         "ts_err?",
 374 };
 375
 376 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 377 {
 378         struct cx88_core *core = dev->core;
 379         u32 status, mask, count;
 380
 381         dprintk( 1, "cx8802_mpeg_irq\n" );
 382         status = cx_read(MO_TS_INTSTAT);
 383         mask   = cx_read(MO_TS_INTMSK);
 384         if (0 == (status & mask))
 385                 return;
 386
 387         cx_write(MO_TS_INTSTAT, status);
 388
 389         if (debug || (status & mask & ~0xff))
 390                 cx88_print_irqbits(core->name, "irq mpeg ",
 391                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 392                                    status, mask);
 393
 394         /* risc op code error */
 395         if (status & (1 << 16)) {
 396                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 397                 cx_clear(MO_TS_DMACNTRL, 0x11);
 398                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 399         }
 400
 401         /* risc1 y */
 402         if (status & 0x01) {
 403                 dprintk( 1, "wake up\n" );
 404                 spin_lock(&dev->slock);
 405                 count = cx_read(MO_TS_GPCNT);
 406                 cx88_wakeup(dev->core, &dev->mpegq, count);
 407                 spin_unlock(&dev->slock);
 408         }
 409
 410         /* risc2 y */
 411         if (status & 0x10) {
 412                 spin_lock(&dev->slock);
 413                 cx8802_restart_queue(dev,&dev->mpegq);
 414                 spin_unlock(&dev->slock);
 415         }
 416
 417         /* other general errors */
 418         if (status & 0x1f0100) {
 419                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 420                 spin_lock(&dev->slock);
 421                 cx8802_stop_dma(dev);
 422                 cx8802_restart_queue(dev,&dev->mpegq);
 423                 spin_unlock(&dev->slock);
 424         }
 425 }
 426
 427 #define MAX_IRQ_LOOP 10
 428
 429 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 430 {
 431         struct cx8802_dev *dev = dev_id;
 432         struct cx88_core *core = dev->core;
 433         u32 status;
 434         int loop, handled = 0;
 435
 436         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 437                 status = cx_read(MO_PCI_INTSTAT) &
 438                         (core->pci_irqmask | PCI_INT_TSINT);
 439                 if (0 == status)
 440                         goto out;
 441                 dprintk( 1, "cx8802_irq\n" );
 442                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 443                 dprintk( 1, "    status: %d\n", status );
 444                 handled = 1;
 445                 cx_write(MO_PCI_INTSTAT, status);
 446
 447                 if (status & core->pci_irqmask)
 448                         cx88_core_irq(core,status);
 449                 if (status & PCI_INT_TSINT)
 450                         cx8802_mpeg_irq(dev);
 451         };
 452         if (MAX_IRQ_LOOP == loop) {
 453                 dprintk( 0, "clearing mask\n" );
 454                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 455                        core->name);
 456                 cx_write(MO_PCI_INTMSK,0);
 457         }
 458
 459  out:
 460         return IRQ_RETVAL(handled);
 461 }
 462
 463 static int cx8802_init_common(struct cx8802_dev *dev)
 464 {
 465         struct cx88_core *core = dev->core;
 466         int err;
 467
 468         /* pci init */
 469         if (pci_enable_device(dev->pci))
 470                 return -EIO;
 471         pci_set_master(dev->pci);
 472         if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
 473                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 474                 return -EIO;
 475         }
 476
 477         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 478         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 479         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 480                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 481                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 482                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 483
 484         /* initialize driver struct */
 485         spin_lock_init(&dev->slock);
 486
 487         /* init dma queue */
 488         INIT_LIST_HEAD(&dev->mpegq.active);
 489         INIT_LIST_HEAD(&dev->mpegq.queued);
 490         dev->mpegq.timeout.function = cx8802_timeout;
 491         dev->mpegq.timeout.data     = (unsigned long)dev;
 492         init_timer(&dev->mpegq.timeout);
 493         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 494                           MO_TS_DMACNTRL,0x11,0x00);
 495
 496         /* get irq */
 497         err = request_irq(dev->pci->irq, cx8802_irq,
 498                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 499         if (err < 0) {
 500                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 501                        dev->core->name, dev->pci->irq);
 502                 return err;
 503         }
 504         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 505
 506         /* everything worked */
 507         pci_set_drvdata(dev->pci,dev);
 508         return 0;
 509 }
 510
 511 static void cx8802_fini_common(struct cx8802_dev *dev)
 512 {
 513         dprintk( 2, "cx8802_fini_common\n" );
 514         cx8802_stop_dma(dev);
 515         pci_disable_device(dev->pci);
 516
 517         /* unregister stuff */
 518         free_irq(dev->pci->irq, dev);
 519         pci_set_drvdata(dev->pci, NULL);
 520
 521         /* free memory */
 522         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 523 }
 524
 525 /* ----------------------------------------------------------- */
 526
 527 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 528 {
 529         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 530         struct cx88_core *core = dev->core;
 531
 532         /* stop mpeg dma */
 533         spin_lock(&dev->slock);
 534         if (!list_empty(&dev->mpegq.active)) {
 535                 dprintk( 2, "suspend\n" );
 536                 printk("%s: suspend mpeg\n", core->name);
 537                 cx8802_stop_dma(dev);
 538                 del_timer(&dev->mpegq.timeout);
 539         }
 540         spin_unlock(&dev->slock);
 541
 542         /* FIXME -- shutdown device */
 543         cx88_shutdown(dev->core);
 544
 545         pci_save_state(pci_dev);
 546         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 547                 pci_disable_device(pci_dev);
 548                 dev->state.disabled = 1;
 549         }
 550         return 0;
 551 }
 552
 553 static int cx8802_resume_common(struct pci_dev *pci_dev)
 554 {
 555         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 556         struct cx88_core *core = dev->core;
 557         int err;
 558
 559         if (dev->state.disabled) {
 560                 err=pci_enable_device(pci_dev);
 561                 if (err) {
 562                         printk(KERN_ERR "%s: can't enable device\n",
 563                                                dev->core->name);
 564                         return err;
 565                 }
 566                 dev->state.disabled = 0;
 567         }
 568         err=pci_set_power_state(pci_dev, PCI_D0);
 569         if (err) {
 570                 printk(KERN_ERR "%s: can't enable device\n",
 571                                                dev->core->name);
 572                 pci_disable_device(pci_dev);
 573                 dev->state.disabled = 1;
 574
 575                 return err;
 576         }
 577         pci_restore_state(pci_dev);
 578
 579         /* FIXME: re-initialize hardware */
 580         cx88_reset(dev->core);
 581
 582         /* restart video+vbi capture */
 583         spin_lock(&dev->slock);
 584         if (!list_empty(&dev->mpegq.active)) {
 585                 printk("%s: resume mpeg\n", core->name);
 586                 cx8802_restart_queue(dev,&dev->mpegq);
 587         }
 588         spin_unlock(&dev->slock);
 589
 590         return 0;
 591 }
 592
 593 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 594 {
 595         struct cx8802_driver *d;
 596
 597         list_for_each_entry(d, &dev->drvlist, drvlist)
 598                 if (d->type_id == btype)
 599                         return d;
 600
 601         return NULL;
 602 }
 603
 604 /* Driver asked for hardware access. */
 605 static int cx8802_request_acquire(struct cx8802_driver *drv)
 606 {
 607         struct cx88_core *core = drv->core;
 608         unsigned int    i;
 609
 610         /* Fail a request for hardware if the device is busy. */
 611         if (core->active_type_id != CX88_BOARD_NONE &&
 612             core->active_type_id != drv->type_id)
 613                 return -EBUSY;
 614
 615         core->input = 0;
 616         for (i = 0;
 617              i < (sizeof(core->board.input) / sizeof(struct cx88_input));
 618              i++) {
 619                 if (core->board.input[i].type == CX88_VMUX_DVB) {
 620                         core->input = i;
 621                         break;
 622                 }
 623         }
 624
 625         if (drv->advise_acquire)
 626         {
 627                 mutex_lock(&drv->core->lock);
 628                 core->active_ref++;
 629                 if (core->active_type_id == CX88_BOARD_NONE) {
 630                         core->active_type_id = drv->type_id;
 631                         drv->advise_acquire(drv);
 632                 }
 633                 mutex_unlock(&drv->core->lock);
 634
 635                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 636         }
 637
 638         return 0;
 639 }
 640
 641 /* Driver asked to release hardware. */
 642 static int cx8802_request_release(struct cx8802_driver *drv)
 643 {
 644         struct cx88_core *core = drv->core;
 645
 646         mutex_lock(&drv->core->lock);
 647         if (drv->advise_release && --core->active_ref == 0)
 648         {
 649                 drv->advise_release(drv);
 650                 core->active_type_id = CX88_BOARD_NONE;
 651                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 652         }
 653         mutex_unlock(&drv->core->lock);
 654
 655         return 0;
 656 }
 657
 658 static int cx8802_check_driver(struct cx8802_driver *drv)
 659 {
 660         if (drv == NULL)
 661                 return -ENODEV;
 662
 663         if ((drv->type_id != CX88_MPEG_DVB) &&
 664                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 665                 return -EINVAL;
 666
 667         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 668                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 669                 return -EINVAL;
 670
 671         if ((drv->probe == NULL) ||
 672                 (drv->remove == NULL) ||
 673                 (drv->advise_acquire == NULL) ||
 674                 (drv->advise_release == NULL))
 675                 return -EINVAL;
 676
 677         return 0;
 678 }
 679
 680 int cx8802_register_driver(struct cx8802_driver *drv)
 681 {
 682         struct cx8802_dev *dev;
 683         struct cx8802_driver *driver;
 684         int err, i = 0;
 685
 686         printk(KERN_INFO
 687                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 688                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 689                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 690
 691         if ((err = cx8802_check_driver(drv)) != 0) {
 692                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 693                 return err;
 694         }
 695
 696         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 697                 printk(KERN_INFO
 698                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 699                        dev->core->name, dev->pci->subsystem_vendor,
 700                        dev->pci->subsystem_device, dev->core->board.name,
 701                        dev->core->boardnr);
 702
 703                 /* Bring up a new struct for each driver instance */
 704                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 705                 if (driver == NULL)
 706                         return -ENOMEM;
 707
 708                 /* Snapshot of the driver registration data */
 709                 drv->core = dev->core;
 710                 drv->suspend = cx8802_suspend_common;
 711                 drv->resume = cx8802_resume_common;
 712                 drv->request_acquire = cx8802_request_acquire;
 713                 drv->request_release = cx8802_request_release;
 714                 memcpy(driver, drv, sizeof(*driver));
 715
 716                 err = drv->probe(driver);
 717                 if (err == 0) {
 718                         i++;
 719                         mutex_lock(&drv->core->lock);
 720                         list_add_tail(&driver->drvlist, &dev->drvlist);
 721                         mutex_unlock(&drv->core->lock);
 722                 } else {
 723                         printk(KERN_ERR
 724                                "%s/2: cx8802 probe failed, err = %d\n",
 725                                dev->core->name, err);
 726                 }
 727
 728         }
 729
 730         return i ? 0 : -ENODEV;
 731 }
 732
 733 int cx8802_unregister_driver(struct cx8802_driver *drv)
 734 {
 735         struct cx8802_dev *dev;
 736         struct cx8802_driver *d, *dtmp;
 737         int err = 0;
 738
 739         printk(KERN_INFO
 740                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 741                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 742                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 743
 744         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 745                 printk(KERN_INFO
 746                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 747                        dev->core->name, dev->pci->subsystem_vendor,
 748                        dev->pci->subsystem_device, dev->core->board.name,
 749                        dev->core->boardnr);
 750
 751                 mutex_lock(&dev->core->lock);
 752
 753                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
 754                         /* only unregister the correct driver type */
 755                         if (d->type_id != drv->type_id)
 756                                 continue;
 757
 758                         err = d->remove(d);
 759                         if (err == 0) {
 760                                 list_del(&d->drvlist);
 761                                 kfree(d);
 762                         } else
 763                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 764                                        "failed (%d)\n", dev->core->name, err);
 765                 }
 766
 767                 mutex_unlock(&dev->core->lock);
 768         }
 769
 770         return err;
 771 }
 772
 773 /* ----------------------------------------------------------- */
 774 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 775                                const struct pci_device_id *pci_id)
 776 {
 777         struct cx8802_dev *dev;
 778         struct cx88_core  *core;
 779         int err;
 780
 781         /* general setup */
 782         core = cx88_core_get(pci_dev);
 783         if (NULL == core)
 784                 return -EINVAL;
 785
 786         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 787
 788         err = -ENODEV;
 789         if (!core->board.mpeg)
 790                 goto fail_core;
 791
 792         err = -ENOMEM;
 793         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 794         if (NULL == dev)
 795                 goto fail_core;
 796         dev->pci = pci_dev;
 797         dev->core = core;
 798
 799         /* Maintain a reference so cx88-video can query the 8802 device. */
 800         core->dvbdev = dev;
 801
 802         err = cx8802_init_common(dev);
 803         if (err != 0)
 804                 goto fail_free;
 805
 806         INIT_LIST_HEAD(&dev->drvlist);
 807         list_add_tail(&dev->devlist,&cx8802_devlist);
 808
 809         /* now autoload cx88-dvb or cx88-blackbird */
 810         request_modules(dev);
 811         return 0;
 812
 813  fail_free:
 814         kfree(dev);
 815  fail_core:
 816         core->dvbdev = NULL;
 817         cx88_core_put(core,pci_dev);
 818         return err;
 819 }
 820
 821 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 822 {
 823         struct cx8802_dev *dev;
 824
 825         dev = pci_get_drvdata(pci_dev);
 826
 827         dprintk( 1, "%s\n", __func__);
 828
 829         flush_request_modules(dev);
 830
 831         mutex_lock(&dev->core->lock);
 832
 833         if (!list_empty(&dev->drvlist)) {
 834                 struct cx8802_driver *drv, *tmp;
 835                 int err;
 836
 837                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
 838                        "while cx8802 sub-drivers still loaded?!\n",
 839                        dev->core->name);
 840
 841                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
 842                         err = drv->remove(drv);
 843                         if (err == 0) {
 844                                 list_del(&drv->drvlist);
 845                         } else
 846                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 847                                        "failed (%d)\n", dev->core->name, err);
 848                         kfree(drv);
 849                 }
 850         }
 851
 852         mutex_unlock(&dev->core->lock);
 853
 854         /* Destroy any 8802 reference. */
 855         dev->core->dvbdev = NULL;
 856
 857         /* common */
 858         cx8802_fini_common(dev);
 859         cx88_core_put(dev->core,dev->pci);
 860         kfree(dev);
 861 }
 862
 863 static const struct pci_device_id cx8802_pci_tbl[] = {
 864         {
 865                 .vendor       = 0x14f1,
 866                 .device       = 0x8802,
 867                 .subvendor    = PCI_ANY_ID,
 868                 .subdevice    = PCI_ANY_ID,
 869         },{
 870                 /* --- end of list --- */
 871         }
 872 };
 873 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 874
 875 static struct pci_driver cx8802_pci_driver = {
 876         .name     = "cx88-mpeg driver manager",
 877         .id_table = cx8802_pci_tbl,
 878         .probe    = cx8802_probe,
 879         .remove   = __devexit_p(cx8802_remove),
 880 };
 881
 882 static int __init cx8802_init(void)
 883 {
 884         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
 885                (CX88_VERSION_CODE >> 16) & 0xff,
 886                (CX88_VERSION_CODE >>  8) & 0xff,
 887                CX88_VERSION_CODE & 0xff);
 888 #ifdef SNAPSHOT
 889         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 890                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 891 #endif
 892         return pci_register_driver(&cx8802_pci_driver);
 893 }
 894
 895 static void __exit cx8802_fini(void)
 896 {
 897         pci_unregister_driver(&cx8802_pci_driver);
 898 }
 899
 900 module_init(cx8802_init);
 901 module_exit(cx8802_fini);
 902 EXPORT_SYMBOL(cx8802_buf_prepare);
 903 EXPORT_SYMBOL(cx8802_buf_queue);
 904 EXPORT_SYMBOL(cx8802_cancel_buffers);
 905
 906 EXPORT_SYMBOL(cx8802_register_driver);
 907 EXPORT_SYMBOL(cx8802_unregister_driver);
 908 EXPORT_SYMBOL(cx8802_get_driver);
 909 /* ----------------------------------------------------------- */
 910 /*
 911  * Local variables:
 912  * c-basic-offset: 8
 913  * End:
 914  * 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
 915  */