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 static DEFINE_MUTEX(cx8802_mutex);
  82 /* ------------------------------------------------------------------ */
  83
  84 static int cx8802_start_dma(struct cx8802_dev    *dev,
  85                             struct cx88_dmaqueue *q,
  86                             struct cx88_buffer   *buf)
  87 {
  88         struct cx88_core *core = dev->core;
  89
  90         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
  91                 buf->vb.width, buf->vb.height, buf->vb.field);
  92
  93         /* setup fifo + format */
  94         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  95                                 dev->ts_packet_size, buf->risc.dma);
  96
  97         /* write TS length to chip */
  98         cx_write(MO_TS_LNGTH, buf->vb.width);
  99
 100         /* FIXME: this needs a review.
 101          * also: move to cx88-blackbird + cx88-dvb source files? */
 102
 103         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
 104
 105         if ( (core->active_type_id == CX88_MPEG_DVB) &&
 106                 (core->board.mpeg & CX88_MPEG_DVB) ) {
 107
 108                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 109                 /* negedge driven & software reset */
 110                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 111                 udelay(100);
 112                 cx_write(MO_PINMUX_IO, 0x00);
 113                 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
 114                 switch (core->boardnr) {
 115                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 116                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 117                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 118                 case CX88_BOARD_PCHDTV_HD5500:
 119                         cx_write(TS_SOP_STAT, 1<<13);
 120                         break;
 121                 case CX88_BOARD_SAMSUNG_SMT_7020:
 122                         cx_write(TS_SOP_STAT, 0x00);
 123                         break;
 124                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 125                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 126                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 127                         udelay(100);
 128                         break;
 129                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 130                         /* Enable MPEG parallel IO and video signal pins */
 131                         cx_write(MO_PINMUX_IO, 0x88);
 132                         cx_write(TS_SOP_STAT, 0);
 133                         cx_write(TS_VALERR_CNTRL, 0);
 134                         break;
 135                 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 136                         /* Enable MPEG parallel IO and video signal pins */
 137                         cx_write(MO_PINMUX_IO, 0x88);
 138                         cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
 139                         dev->ts_gen_cntrl = 5;
 140                         cx_write(TS_SOP_STAT, 0);
 141                         cx_write(TS_VALERR_CNTRL, 0);
 142                         udelay(100);
 143                         break;
 144                 default:
 145                         cx_write(TS_SOP_STAT, 0x00);
 146                         break;
 147                 }
 148                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 149                 udelay(100);
 150         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 151                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 152                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 153                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 154
 155                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 156                 udelay(100);
 157
 158                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 159                 cx_write(TS_VALERR_CNTRL, 0x2000);
 160
 161                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 162                 udelay(100);
 163         } else {
 164                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
 165                         core->board.mpeg );
 166                 return -EINVAL;
 167         }
 168
 169         /* reset counter */
 170         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 171         q->count = 1;
 172
 173         /* enable irqs */
 174         dprintk( 1, "setting the interrupt mask\n" );
 175         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 176         cx_set(MO_TS_INTMSK,  0x1f0011);
 177
 178         /* start dma */
 179         cx_set(MO_DEV_CNTRL2, (1<<5));
 180         cx_set(MO_TS_DMACNTRL, 0x11);
 181         return 0;
 182 }
 183
 184 static int cx8802_stop_dma(struct cx8802_dev *dev)
 185 {
 186         struct cx88_core *core = dev->core;
 187         dprintk( 1, "cx8802_stop_dma\n" );
 188
 189         /* stop dma */
 190         cx_clear(MO_TS_DMACNTRL, 0x11);
 191
 192         /* disable irqs */
 193         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 194         cx_clear(MO_TS_INTMSK, 0x1f0011);
 195
 196         /* Reset the controller */
 197         cx_write(TS_GEN_CNTRL, 0xcd);
 198         return 0;
 199 }
 200
 201 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 202                                 struct cx88_dmaqueue *q)
 203 {
 204         struct cx88_buffer *buf;
 205
 206         dprintk( 1, "cx8802_restart_queue\n" );
 207         if (list_empty(&q->active))
 208         {
 209                 struct cx88_buffer *prev;
 210                 prev = NULL;
 211
 212                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 213
 214                 for (;;) {
 215                         if (list_empty(&q->queued))
 216                                 return 0;
 217                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 218                         if (NULL == prev) {
 219                                 list_del(&buf->vb.queue);
 220                                 list_add_tail(&buf->vb.queue,&q->active);
 221                                 cx8802_start_dma(dev, q, buf);
 222                                 buf->vb.state = VIDEOBUF_ACTIVE;
 223                                 buf->count    = q->count++;
 224                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 225                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 226                                         buf,buf->vb.i);
 227
 228                         } else if (prev->vb.width  == buf->vb.width  &&
 229                                    prev->vb.height == buf->vb.height &&
 230                                    prev->fmt       == buf->fmt) {
 231                                 list_del(&buf->vb.queue);
 232                                 list_add_tail(&buf->vb.queue,&q->active);
 233                                 buf->vb.state = VIDEOBUF_ACTIVE;
 234                                 buf->count    = q->count++;
 235                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 236                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 237                                         buf,buf->vb.i);
 238                         } else {
 239                                 return 0;
 240                         }
 241                         prev = buf;
 242                 }
 243                 return 0;
 244         }
 245
 246         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 247         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 248                 buf, buf->vb.i);
 249         cx8802_start_dma(dev, q, buf);
 250         list_for_each_entry(buf, &q->active, vb.queue)
 251                 buf->count = q->count++;
 252         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 253         return 0;
 254 }
 255
 256 /* ------------------------------------------------------------------ */
 257
 258 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 259                         struct cx88_buffer *buf, enum v4l2_field field)
 260 {
 261         int size = dev->ts_packet_size * dev->ts_packet_count;
 262         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 263         int rc;
 264
 265         dprintk(1, "%s: %p\n", __func__, buf);
 266         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 267                 return -EINVAL;
 268
 269         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 270                 buf->vb.width  = dev->ts_packet_size;
 271                 buf->vb.height = dev->ts_packet_count;
 272                 buf->vb.size   = size;
 273                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 274
 275                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 276                         goto fail;
 277                 cx88_risc_databuffer(dev->pci, &buf->risc,
 278                                      dma->sglist,
 279                                      buf->vb.width, buf->vb.height, 0);
 280         }
 281         buf->vb.state = VIDEOBUF_PREPARED;
 282         return 0;
 283
 284  fail:
 285         cx88_free_buffer(q,buf);
 286         return rc;
 287 }
 288
 289 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 290 {
 291         struct cx88_buffer    *prev;
 292         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 293
 294         dprintk( 1, "cx8802_buf_queue\n" );
 295         /* add jump to stopper */
 296         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 297         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 298
 299         if (list_empty(&cx88q->active)) {
 300                 dprintk( 1, "queue is empty - first active\n" );
 301                 list_add_tail(&buf->vb.queue,&cx88q->active);
 302                 cx8802_start_dma(dev, cx88q, buf);
 303                 buf->vb.state = VIDEOBUF_ACTIVE;
 304                 buf->count    = cx88q->count++;
 305                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 306                 dprintk(1,"[%p/%d] %s - first active\n",
 307                         buf, buf->vb.i, __func__);
 308
 309         } else {
 310                 dprintk( 1, "queue is not empty - append to active\n" );
 311                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 312                 list_add_tail(&buf->vb.queue,&cx88q->active);
 313                 buf->vb.state = VIDEOBUF_ACTIVE;
 314                 buf->count    = cx88q->count++;
 315                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 316                 dprintk( 1, "[%p/%d] %s - append to active\n",
 317                         buf, buf->vb.i, __func__);
 318         }
 319 }
 320
 321 /* ----------------------------------------------------------- */
 322
 323 static void do_cancel_buffers(struct cx8802_dev *dev, const char *reason, int restart)
 324 {
 325         struct cx88_dmaqueue *q = &dev->mpegq;
 326         struct cx88_buffer *buf;
 327         unsigned long flags;
 328
 329         spin_lock_irqsave(&dev->slock,flags);
 330         while (!list_empty(&q->active)) {
 331                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 332                 list_del(&buf->vb.queue);
 333                 buf->vb.state = VIDEOBUF_ERROR;
 334                 wake_up(&buf->vb.done);
 335                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 336                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 337         }
 338         if (restart)
 339         {
 340                 dprintk(1, "restarting queue\n" );
 341                 cx8802_restart_queue(dev,q);
 342         }
 343         spin_unlock_irqrestore(&dev->slock,flags);
 344 }
 345
 346 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 347 {
 348         struct cx88_dmaqueue *q = &dev->mpegq;
 349
 350         dprintk( 1, "cx8802_cancel_buffers" );
 351         del_timer_sync(&q->timeout);
 352         cx8802_stop_dma(dev);
 353         do_cancel_buffers(dev,"cancel",0);
 354 }
 355
 356 static void cx8802_timeout(unsigned long data)
 357 {
 358         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 359
 360         dprintk(1, "%s\n",__func__);
 361
 362         if (debug)
 363                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 364         cx8802_stop_dma(dev);
 365         do_cancel_buffers(dev,"timeout",1);
 366 }
 367
 368 static const char * cx88_mpeg_irqs[32] = {
 369         "ts_risci1", NULL, NULL, NULL,
 370         "ts_risci2", NULL, NULL, NULL,
 371         "ts_oflow",  NULL, NULL, NULL,
 372         "ts_sync",   NULL, NULL, NULL,
 373         "opc_err", "par_err", "rip_err", "pci_abort",
 374         "ts_err?",
 375 };
 376
 377 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 378 {
 379         struct cx88_core *core = dev->core;
 380         u32 status, mask, count;
 381
 382         dprintk( 1, "cx8802_mpeg_irq\n" );
 383         status = cx_read(MO_TS_INTSTAT);
 384         mask   = cx_read(MO_TS_INTMSK);
 385         if (0 == (status & mask))
 386                 return;
 387
 388         cx_write(MO_TS_INTSTAT, status);
 389
 390         if (debug || (status & mask & ~0xff))
 391                 cx88_print_irqbits(core->name, "irq mpeg ",
 392                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 393                                    status, mask);
 394
 395         /* risc op code error */
 396         if (status & (1 << 16)) {
 397                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 398                 cx_clear(MO_TS_DMACNTRL, 0x11);
 399                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 400         }
 401
 402         /* risc1 y */
 403         if (status & 0x01) {
 404                 dprintk( 1, "wake up\n" );
 405                 spin_lock(&dev->slock);
 406                 count = cx_read(MO_TS_GPCNT);
 407                 cx88_wakeup(dev->core, &dev->mpegq, count);
 408                 spin_unlock(&dev->slock);
 409         }
 410
 411         /* risc2 y */
 412         if (status & 0x10) {
 413                 spin_lock(&dev->slock);
 414                 cx8802_restart_queue(dev,&dev->mpegq);
 415                 spin_unlock(&dev->slock);
 416         }
 417
 418         /* other general errors */
 419         if (status & 0x1f0100) {
 420                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 421                 spin_lock(&dev->slock);
 422                 cx8802_stop_dma(dev);
 423                 cx8802_restart_queue(dev,&dev->mpegq);
 424                 spin_unlock(&dev->slock);
 425         }
 426 }
 427
 428 #define MAX_IRQ_LOOP 10
 429
 430 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 431 {
 432         struct cx8802_dev *dev = dev_id;
 433         struct cx88_core *core = dev->core;
 434         u32 status;
 435         int loop, handled = 0;
 436
 437         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 438                 status = cx_read(MO_PCI_INTSTAT) &
 439                         (core->pci_irqmask | PCI_INT_TSINT);
 440                 if (0 == status)
 441                         goto out;
 442                 dprintk( 1, "cx8802_irq\n" );
 443                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 444                 dprintk( 1, "    status: %d\n", status );
 445                 handled = 1;
 446                 cx_write(MO_PCI_INTSTAT, status);
 447
 448                 if (status & core->pci_irqmask)
 449                         cx88_core_irq(core,status);
 450                 if (status & PCI_INT_TSINT)
 451                         cx8802_mpeg_irq(dev);
 452         };
 453         if (MAX_IRQ_LOOP == loop) {
 454                 dprintk( 0, "clearing mask\n" );
 455                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 456                        core->name);
 457                 cx_write(MO_PCI_INTMSK,0);
 458         }
 459
 460  out:
 461         return IRQ_RETVAL(handled);
 462 }
 463
 464 static int cx8802_init_common(struct cx8802_dev *dev)
 465 {
 466         struct cx88_core *core = dev->core;
 467         int err;
 468
 469         /* pci init */
 470         if (pci_enable_device(dev->pci))
 471                 return -EIO;
 472         pci_set_master(dev->pci);
 473         if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
 474                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 475                 return -EIO;
 476         }
 477
 478         dev->pci_rev = dev->pci->revision;
 479         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 480         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 481                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 482                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 483                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 484
 485         /* initialize driver struct */
 486         spin_lock_init(&dev->slock);
 487
 488         /* init dma queue */
 489         INIT_LIST_HEAD(&dev->mpegq.active);
 490         INIT_LIST_HEAD(&dev->mpegq.queued);
 491         dev->mpegq.timeout.function = cx8802_timeout;
 492         dev->mpegq.timeout.data     = (unsigned long)dev;
 493         init_timer(&dev->mpegq.timeout);
 494         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 495                           MO_TS_DMACNTRL,0x11,0x00);
 496
 497         /* get irq */
 498         err = request_irq(dev->pci->irq, cx8802_irq,
 499                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 500         if (err < 0) {
 501                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 502                        dev->core->name, dev->pci->irq);
 503                 return err;
 504         }
 505         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 506
 507         /* everything worked */
 508         pci_set_drvdata(dev->pci,dev);
 509         return 0;
 510 }
 511
 512 static void cx8802_fini_common(struct cx8802_dev *dev)
 513 {
 514         dprintk( 2, "cx8802_fini_common\n" );
 515         cx8802_stop_dma(dev);
 516         pci_disable_device(dev->pci);
 517
 518         /* unregister stuff */
 519         free_irq(dev->pci->irq, dev);
 520         pci_set_drvdata(dev->pci, NULL);
 521
 522         /* free memory */
 523         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 524 }
 525
 526 /* ----------------------------------------------------------- */
 527
 528 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 529 {
 530         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 531         struct cx88_core *core = dev->core;
 532
 533         /* stop mpeg dma */
 534         spin_lock(&dev->slock);
 535         if (!list_empty(&dev->mpegq.active)) {
 536                 dprintk( 2, "suspend\n" );
 537                 printk("%s: suspend mpeg\n", core->name);
 538                 cx8802_stop_dma(dev);
 539                 del_timer(&dev->mpegq.timeout);
 540         }
 541         spin_unlock(&dev->slock);
 542
 543         /* FIXME -- shutdown device */
 544         cx88_shutdown(dev->core);
 545
 546         pci_save_state(pci_dev);
 547         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 548                 pci_disable_device(pci_dev);
 549                 dev->state.disabled = 1;
 550         }
 551         return 0;
 552 }
 553
 554 static int cx8802_resume_common(struct pci_dev *pci_dev)
 555 {
 556         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 557         struct cx88_core *core = dev->core;
 558         int err;
 559
 560         if (dev->state.disabled) {
 561                 err=pci_enable_device(pci_dev);
 562                 if (err) {
 563                         printk(KERN_ERR "%s: can't enable device\n",
 564                                                dev->core->name);
 565                         return err;
 566                 }
 567                 dev->state.disabled = 0;
 568         }
 569         err=pci_set_power_state(pci_dev, PCI_D0);
 570         if (err) {
 571                 printk(KERN_ERR "%s: can't enable device\n",
 572                                                dev->core->name);
 573                 pci_disable_device(pci_dev);
 574                 dev->state.disabled = 1;
 575
 576                 return err;
 577         }
 578         pci_restore_state(pci_dev);
 579
 580         /* FIXME: re-initialize hardware */
 581         cx88_reset(dev->core);
 582
 583         /* restart video+vbi capture */
 584         spin_lock(&dev->slock);
 585         if (!list_empty(&dev->mpegq.active)) {
 586                 printk("%s: resume mpeg\n", core->name);
 587                 cx8802_restart_queue(dev,&dev->mpegq);
 588         }
 589         spin_unlock(&dev->slock);
 590
 591         return 0;
 592 }
 593
 594 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 595 {
 596         struct cx8802_driver *d;
 597
 598         list_for_each_entry(d, &dev->drvlist, drvlist)
 599                 if (d->type_id == btype)
 600                         return d;
 601
 602         return NULL;
 603 }
 604
 605 /* Driver asked for hardware access. */
 606 static int cx8802_request_acquire(struct cx8802_driver *drv)
 607 {
 608         struct cx88_core *core = drv->core;
 609         unsigned int    i;
 610
 611         /* Fail a request for hardware if the device is busy. */
 612         if (core->active_type_id != CX88_BOARD_NONE &&
 613             core->active_type_id != drv->type_id)
 614                 return -EBUSY;
 615
 616         core->input = 0;
 617         for (i = 0;
 618              i < (sizeof(core->board.input) / sizeof(struct cx88_input));
 619              i++) {
 620                 if (core->board.input[i].type == CX88_VMUX_DVB) {
 621                         core->input = i;
 622                         break;
 623                 }
 624         }
 625
 626         if (drv->advise_acquire)
 627         {
 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
 634                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 635         }
 636
 637         return 0;
 638 }
 639
 640 /* Driver asked to release hardware. */
 641 static int cx8802_request_release(struct cx8802_driver *drv)
 642 {
 643         struct cx88_core *core = drv->core;
 644
 645         if (drv->advise_release && --core->active_ref == 0)
 646         {
 647                 drv->advise_release(drv);
 648                 core->active_type_id = CX88_BOARD_NONE;
 649                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 650         }
 651
 652         return 0;
 653 }
 654
 655 static int cx8802_check_driver(struct cx8802_driver *drv)
 656 {
 657         if (drv == NULL)
 658                 return -ENODEV;
 659
 660         if ((drv->type_id != CX88_MPEG_DVB) &&
 661                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 662                 return -EINVAL;
 663
 664         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 665                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 666                 return -EINVAL;
 667
 668         if ((drv->probe == NULL) ||
 669                 (drv->remove == NULL) ||
 670                 (drv->advise_acquire == NULL) ||
 671                 (drv->advise_release == NULL))
 672                 return -EINVAL;
 673
 674         return 0;
 675 }
 676
 677 int cx8802_register_driver(struct cx8802_driver *drv)
 678 {
 679         struct cx8802_dev *dev;
 680         struct cx8802_driver *driver;
 681         int err, i = 0;
 682
 683         printk(KERN_INFO
 684                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 685                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 686                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 687
 688         if ((err = cx8802_check_driver(drv)) != 0) {
 689                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 690                 return err;
 691         }
 692
 693         mutex_lock(&cx8802_mutex);
 694
 695         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 696                 printk(KERN_INFO
 697                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 698                        dev->core->name, dev->pci->subsystem_vendor,
 699                        dev->pci->subsystem_device, dev->core->board.name,
 700                        dev->core->boardnr);
 701
 702                 /* Bring up a new struct for each driver instance */
 703                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 704                 if (driver == NULL) {
 705                         err = -ENOMEM;
 706                         goto out;
 707                 }
 708
 709                 /* Snapshot of the driver registration data */
 710                 drv->core = dev->core;
 711                 drv->suspend = cx8802_suspend_common;
 712                 drv->resume = cx8802_resume_common;
 713                 drv->request_acquire = cx8802_request_acquire;
 714                 drv->request_release = cx8802_request_release;
 715                 memcpy(driver, drv, sizeof(*driver));
 716
 717                 mutex_lock(&drv->core->lock);
 718                 err = drv->probe(driver);
 719                 if (err == 0) {
 720                         i++;
 721                         list_add_tail(&driver->drvlist, &dev->drvlist);
 722                 } else {
 723                         printk(KERN_ERR
 724                                "%s/2: cx8802 probe failed, err = %d\n",
 725                                dev->core->name, err);
 726                 }
 727                 mutex_unlock(&drv->core->lock);
 728         }
 729
 730         err = i ? 0 : -ENODEV;
 731 out:
 732         mutex_unlock(&cx8802_mutex);
 733         return err;
 734 }
 735
 736 int cx8802_unregister_driver(struct cx8802_driver *drv)
 737 {
 738         struct cx8802_dev *dev;
 739         struct cx8802_driver *d, *dtmp;
 740         int err = 0;
 741
 742         printk(KERN_INFO
 743                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 744                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 745                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 746
 747         mutex_lock(&cx8802_mutex);
 748
 749         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 750                 printk(KERN_INFO
 751                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 752                        dev->core->name, dev->pci->subsystem_vendor,
 753                        dev->pci->subsystem_device, dev->core->board.name,
 754                        dev->core->boardnr);
 755
 756                 mutex_lock(&dev->core->lock);
 757
 758                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
 759                         /* only unregister the correct driver type */
 760                         if (d->type_id != drv->type_id)
 761                                 continue;
 762
 763                         err = d->remove(d);
 764                         if (err == 0) {
 765                                 list_del(&d->drvlist);
 766                                 kfree(d);
 767                         } else
 768                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 769                                        "failed (%d)\n", dev->core->name, err);
 770                 }
 771
 772                 mutex_unlock(&dev->core->lock);
 773         }
 774
 775         mutex_unlock(&cx8802_mutex);
 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 (!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         /* Maintain a reference so cx88-video can query the 8802 device. */
 807         core->dvbdev = dev;
 808
 809         err = cx8802_init_common(dev);
 810         if (err != 0)
 811                 goto fail_free;
 812
 813         INIT_LIST_HEAD(&dev->drvlist);
 814         mutex_lock(&cx8802_mutex);
 815         list_add_tail(&dev->devlist,&cx8802_devlist);
 816         mutex_unlock(&cx8802_mutex);
 817
 818         /* now autoload cx88-dvb or cx88-blackbird */
 819         request_modules(dev);
 820         return 0;
 821
 822  fail_free:
 823         kfree(dev);
 824  fail_core:
 825         core->dvbdev = NULL;
 826         cx88_core_put(core,pci_dev);
 827         return err;
 828 }
 829
 830 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 831 {
 832         struct cx8802_dev *dev;
 833
 834         dev = pci_get_drvdata(pci_dev);
 835
 836         dprintk( 1, "%s\n", __func__);
 837
 838         flush_request_modules(dev);
 839
 840         mutex_lock(&dev->core->lock);
 841
 842         if (!list_empty(&dev->drvlist)) {
 843                 struct cx8802_driver *drv, *tmp;
 844                 int err;
 845
 846                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
 847                        "while cx8802 sub-drivers still loaded?!\n",
 848                        dev->core->name);
 849
 850                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
 851                         err = drv->remove(drv);
 852                         if (err == 0) {
 853                                 list_del(&drv->drvlist);
 854                         } else
 855                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 856                                        "failed (%d)\n", dev->core->name, err);
 857                         kfree(drv);
 858                 }
 859         }
 860
 861         mutex_unlock(&dev->core->lock);
 862
 863         /* Destroy any 8802 reference. */
 864         dev->core->dvbdev = NULL;
 865
 866         /* common */
 867         cx8802_fini_common(dev);
 868         cx88_core_put(dev->core,dev->pci);
 869         kfree(dev);
 870 }
 871
 872 static const struct pci_device_id cx8802_pci_tbl[] = {
 873         {
 874                 .vendor       = 0x14f1,
 875                 .device       = 0x8802,
 876                 .subvendor    = PCI_ANY_ID,
 877                 .subdevice    = PCI_ANY_ID,
 878         },{
 879                 /* --- end of list --- */
 880         }
 881 };
 882 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 883
 884 static struct pci_driver cx8802_pci_driver = {
 885         .name     = "cx88-mpeg driver manager",
 886         .id_table = cx8802_pci_tbl,
 887         .probe    = cx8802_probe,
 888         .remove   = __devexit_p(cx8802_remove),
 889 };
 890
 891 static int __init cx8802_init(void)
 892 {
 893         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
 894                (CX88_VERSION_CODE >> 16) & 0xff,
 895                (CX88_VERSION_CODE >>  8) & 0xff,
 896                CX88_VERSION_CODE & 0xff);
 897 #ifdef SNAPSHOT
 898         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 899                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 900 #endif
 901         return pci_register_driver(&cx8802_pci_driver);
 902 }
 903
 904 static void __exit cx8802_fini(void)
 905 {
 906         pci_unregister_driver(&cx8802_pci_driver);
 907 }
 908
 909 module_init(cx8802_init);
 910 module_exit(cx8802_fini);
 911 EXPORT_SYMBOL(cx8802_buf_prepare);
 912 EXPORT_SYMBOL(cx8802_buf_queue);
 913 EXPORT_SYMBOL(cx8802_cancel_buffers);
 914
 915 EXPORT_SYMBOL(cx8802_register_driver);
 916 EXPORT_SYMBOL(cx8802_unregister_driver);
 917 EXPORT_SYMBOL(cx8802_get_driver);
 918 /* ----------------------------------------------------------- */
 919 /*
 920  * Local variables:
 921  * c-basic-offset: 8
 922  * End:
 923  * 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
 924  */