SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/cx88/cx88-mpeg.c

   1 /*
   2  *
   3  *  Support for the mpeg transport stream transfers
   4  *  PCI function #2 of the cx2388x.
   5  *
   6  *    (c) 2004 Jelle Foks <jelle@foks.8m.com>
   7  *    (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
   8  *    (c) 2004 Gerd Knorr <kraxel@bytesex.org>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/device.h>
  28 #include <linux/dma-mapping.h>
  29 #include <linux/interrupt.h>
  30 #include <asm/delay.h>
  31
  32 #include "cx88.h"
  33
  34 /* ------------------------------------------------------------------ */
  35
  36 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
  37 MODULE_AUTHOR("Jelle Foks <jelle@foks.8m.com>");
  38 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
  39 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
  40 MODULE_LICENSE("GPL");
  41
  42 static unsigned int debug = 0;
  43 module_param(debug,int,0644);
  44 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
  45
  46 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  47         printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
  48
  49 #define mpeg_dbg(level,fmt, arg...)     if (debug >= level) \
  50         printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
  51
  52 #if defined(CONFIG_MODULES) && defined(MODULE)
  53 static void request_module_async(struct work_struct *work)
  54 {
  55         struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
  56
  57         if (dev->core->board.mpeg & CX88_MPEG_DVB)
  58                 request_module("cx88-dvb");
  59         if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
  60                 request_module("cx88-blackbird");
  61 }
  62
  63 static void request_modules(struct cx8802_dev *dev)
  64 {
  65         INIT_WORK(&dev->request_module_wk, request_module_async);
  66         schedule_work(&dev->request_module_wk);
  67 }
  68 #else
  69 #define request_modules(dev)
  70 #endif /* CONFIG_MODULES */
  71
  72
  73 static LIST_HEAD(cx8802_devlist);
  74 /* ------------------------------------------------------------------ */
  75
  76 static int cx8802_start_dma(struct cx8802_dev    *dev,
  77                             struct cx88_dmaqueue *q,
  78                             struct cx88_buffer   *buf)
  79 {
  80         struct cx88_core *core = dev->core;
  81
  82         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
  83                 buf->vb.width, buf->vb.height, buf->vb.field);
  84
  85         /* setup fifo + format */
  86         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  87                                 dev->ts_packet_size, buf->risc.dma);
  88
  89         /* write TS length to chip */
  90         cx_write(MO_TS_LNGTH, buf->vb.width);
  91
  92         /* FIXME: this needs a review.
  93          * also: move to cx88-blackbird + cx88-dvb source files? */
  94
  95         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
  96
  97         if ( (core->active_type_id == CX88_MPEG_DVB) &&
  98                 (core->board.mpeg & CX88_MPEG_DVB) ) {
  99
 100                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 101                 /* negedge driven & software reset */
 102                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 103                 udelay(100);
 104                 cx_write(MO_PINMUX_IO, 0x00);
 105                 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
 106                 switch (core->boardnr) {
 107                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 108                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 109                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 110                 case CX88_BOARD_PCHDTV_HD5500:
 111                         cx_write(TS_SOP_STAT, 1<<13);
 112                         break;
 113                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 114                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 115                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 116                         udelay(100);
 117                         break;
 118                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 119                         break;
 120                 default:
 121                         cx_write(TS_SOP_STAT, 0x00);
 122                         break;
 123                 }
 124                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 125                 udelay(100);
 126         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 127                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 128                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 129                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 130
 131                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 132                 udelay(100);
 133
 134                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 135                 cx_write(TS_VALERR_CNTRL, 0x2000);
 136
 137                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 138                 udelay(100);
 139         } else {
 140                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
 141                         core->board.mpeg );
 142                 return -EINVAL;
 143         }
 144
 145         /* reset counter */
 146         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 147         q->count = 1;
 148
 149         /* enable irqs */
 150         dprintk( 1, "setting the interrupt mask\n" );
 151         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 152         cx_set(MO_TS_INTMSK,  0x1f0011);
 153
 154         /* start dma */
 155         cx_set(MO_DEV_CNTRL2, (1<<5));
 156         cx_set(MO_TS_DMACNTRL, 0x11);
 157         return 0;
 158 }
 159
 160 static int cx8802_stop_dma(struct cx8802_dev *dev)
 161 {
 162         struct cx88_core *core = dev->core;
 163         dprintk( 1, "cx8802_stop_dma\n" );
 164
 165         /* stop dma */
 166         cx_clear(MO_TS_DMACNTRL, 0x11);
 167
 168         /* disable irqs */
 169         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 170         cx_clear(MO_TS_INTMSK, 0x1f0011);
 171
 172         /* Reset the controller */
 173         cx_write(TS_GEN_CNTRL, 0xcd);
 174         return 0;
 175 }
 176
 177 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 178                                 struct cx88_dmaqueue *q)
 179 {
 180         struct cx88_buffer *buf;
 181         struct list_head *item;
 182
 183         dprintk( 1, "cx8802_restart_queue\n" );
 184         if (list_empty(&q->active))
 185         {
 186                 struct cx88_buffer *prev;
 187                 prev = NULL;
 188
 189                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 190
 191                 for (;;) {
 192                         if (list_empty(&q->queued))
 193                                 return 0;
 194                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 195                         if (NULL == prev) {
 196                                 list_del(&buf->vb.queue);
 197                                 list_add_tail(&buf->vb.queue,&q->active);
 198                                 cx8802_start_dma(dev, q, buf);
 199                                 buf->vb.state = STATE_ACTIVE;
 200                                 buf->count    = q->count++;
 201                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 202                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 203                                         buf,buf->vb.i);
 204
 205                         } else if (prev->vb.width  == buf->vb.width  &&
 206                                    prev->vb.height == buf->vb.height &&
 207                                    prev->fmt       == buf->fmt) {
 208                                 list_del(&buf->vb.queue);
 209                                 list_add_tail(&buf->vb.queue,&q->active);
 210                                 buf->vb.state = STATE_ACTIVE;
 211                                 buf->count    = q->count++;
 212                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 213                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 214                                         buf,buf->vb.i);
 215                         } else {
 216                                 return 0;
 217                         }
 218                         prev = buf;
 219                 }
 220                 return 0;
 221         }
 222
 223         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 224         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 225                 buf, buf->vb.i);
 226         cx8802_start_dma(dev, q, buf);
 227         list_for_each(item,&q->active) {
 228                 buf = list_entry(item, struct cx88_buffer, vb.queue);
 229                 buf->count = q->count++;
 230         }
 231         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 232         return 0;
 233 }
 234
 235 /* ------------------------------------------------------------------ */
 236
 237 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 238                         struct cx88_buffer *buf, enum v4l2_field field)
 239 {
 240         int size = dev->ts_packet_size * dev->ts_packet_count;
 241         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 242         int rc;
 243
 244         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
 245         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 246                 return -EINVAL;
 247
 248         if (STATE_NEEDS_INIT == buf->vb.state) {
 249                 buf->vb.width  = dev->ts_packet_size;
 250                 buf->vb.height = dev->ts_packet_count;
 251                 buf->vb.size   = size;
 252                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 253
 254                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 255                         goto fail;
 256                 cx88_risc_databuffer(dev->pci, &buf->risc,
 257                                      dma->sglist,
 258                                      buf->vb.width, buf->vb.height, 0);
 259         }
 260         buf->vb.state = STATE_PREPARED;
 261         return 0;
 262
 263  fail:
 264         cx88_free_buffer(q,buf);
 265         return rc;
 266 }
 267
 268 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 269 {
 270         struct cx88_buffer    *prev;
 271         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 272
 273         dprintk( 1, "cx8802_buf_queue\n" );
 274         /* add jump to stopper */
 275         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 276         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 277
 278         if (list_empty(&cx88q->active)) {
 279                 dprintk( 1, "queue is empty - first active\n" );
 280                 list_add_tail(&buf->vb.queue,&cx88q->active);
 281                 cx8802_start_dma(dev, cx88q, buf);
 282                 buf->vb.state = STATE_ACTIVE;
 283                 buf->count    = cx88q->count++;
 284                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 285                 dprintk(1,"[%p/%d] %s - first active\n",
 286                         buf, buf->vb.i, __FUNCTION__);
 287
 288         } else {
 289                 dprintk( 1, "queue is not empty - append to active\n" );
 290                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 291                 list_add_tail(&buf->vb.queue,&cx88q->active);
 292                 buf->vb.state = STATE_ACTIVE;
 293                 buf->count    = cx88q->count++;
 294                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 295                 dprintk( 1, "[%p/%d] %s - append to active\n",
 296                         buf, buf->vb.i, __FUNCTION__);
 297         }
 298 }
 299
 300 /* ----------------------------------------------------------- */
 301
 302 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 303 {
 304         struct cx88_dmaqueue *q = &dev->mpegq;
 305         struct cx88_buffer *buf;
 306         unsigned long flags;
 307
 308         spin_lock_irqsave(&dev->slock,flags);
 309         while (!list_empty(&q->active)) {
 310                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 311                 list_del(&buf->vb.queue);
 312                 buf->vb.state = STATE_ERROR;
 313                 wake_up(&buf->vb.done);
 314                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 315                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 316         }
 317         if (restart)
 318         {
 319                 dprintk(1, "restarting queue\n" );
 320                 cx8802_restart_queue(dev,q);
 321         }
 322         spin_unlock_irqrestore(&dev->slock,flags);
 323 }
 324
 325 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 326 {
 327         struct cx88_dmaqueue *q = &dev->mpegq;
 328
 329         dprintk( 1, "cx8802_cancel_buffers" );
 330         del_timer_sync(&q->timeout);
 331         cx8802_stop_dma(dev);
 332         do_cancel_buffers(dev,"cancel",0);
 333 }
 334
 335 static void cx8802_timeout(unsigned long data)
 336 {
 337         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 338
 339         dprintk(1, "%s\n",__FUNCTION__);
 340
 341         if (debug)
 342                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 343         cx8802_stop_dma(dev);
 344         do_cancel_buffers(dev,"timeout",1);
 345 }
 346
 347 static char *cx88_mpeg_irqs[32] = {
 348         "ts_risci1", NULL, NULL, NULL,
 349         "ts_risci2", NULL, NULL, NULL,
 350         "ts_oflow",  NULL, NULL, NULL,
 351         "ts_sync",   NULL, NULL, NULL,
 352         "opc_err", "par_err", "rip_err", "pci_abort",
 353         "ts_err?",
 354 };
 355
 356 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 357 {
 358         struct cx88_core *core = dev->core;
 359         u32 status, mask, count;
 360
 361         dprintk( 1, "cx8802_mpeg_irq\n" );
 362         status = cx_read(MO_TS_INTSTAT);
 363         mask   = cx_read(MO_TS_INTMSK);
 364         if (0 == (status & mask))
 365                 return;
 366
 367         cx_write(MO_TS_INTSTAT, status);
 368
 369         if (debug || (status & mask & ~0xff))
 370                 cx88_print_irqbits(core->name, "irq mpeg ",
 371                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 372                                    status, mask);
 373
 374         /* risc op code error */
 375         if (status & (1 << 16)) {
 376                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 377                 cx_clear(MO_TS_DMACNTRL, 0x11);
 378                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 379         }
 380
 381         /* risc1 y */
 382         if (status & 0x01) {
 383                 dprintk( 1, "wake up\n" );
 384                 spin_lock(&dev->slock);
 385                 count = cx_read(MO_TS_GPCNT);
 386                 cx88_wakeup(dev->core, &dev->mpegq, count);
 387                 spin_unlock(&dev->slock);
 388         }
 389
 390         /* risc2 y */
 391         if (status & 0x10) {
 392                 spin_lock(&dev->slock);
 393                 cx8802_restart_queue(dev,&dev->mpegq);
 394                 spin_unlock(&dev->slock);
 395         }
 396
 397         /* other general errors */
 398         if (status & 0x1f0100) {
 399                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 400                 spin_lock(&dev->slock);
 401                 cx8802_stop_dma(dev);
 402                 cx8802_restart_queue(dev,&dev->mpegq);
 403                 spin_unlock(&dev->slock);
 404         }
 405 }
 406
 407 #define MAX_IRQ_LOOP 10
 408
 409 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 410 {
 411         struct cx8802_dev *dev = dev_id;
 412         struct cx88_core *core = dev->core;
 413         u32 status;
 414         int loop, handled = 0;
 415
 416         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 417                 status = cx_read(MO_PCI_INTSTAT) &
 418                         (core->pci_irqmask | PCI_INT_TSINT);
 419                 if (0 == status)
 420                         goto out;
 421                 dprintk( 1, "cx8802_irq\n" );
 422                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 423                 dprintk( 1, "    status: %d\n", status );
 424                 handled = 1;
 425                 cx_write(MO_PCI_INTSTAT, status);
 426
 427                 if (status & core->pci_irqmask)
 428                         cx88_core_irq(core,status);
 429                 if (status & PCI_INT_TSINT)
 430                         cx8802_mpeg_irq(dev);
 431         };
 432         if (MAX_IRQ_LOOP == loop) {
 433                 dprintk( 0, "clearing mask\n" );
 434                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 435                        core->name);
 436                 cx_write(MO_PCI_INTMSK,0);
 437         }
 438
 439  out:
 440         return IRQ_RETVAL(handled);
 441 }
 442
 443 /* ----------------------------------------------------------- */
 444 /* exported stuff                                              */
 445
 446 int cx8802_init_common(struct cx8802_dev *dev)
 447 {
 448         struct cx88_core *core = dev->core;
 449         int err;
 450
 451         /* pci init */
 452         if (pci_enable_device(dev->pci))
 453                 return -EIO;
 454         pci_set_master(dev->pci);
 455         if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
 456                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 457                 return -EIO;
 458         }
 459
 460         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 461         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 462         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 463                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 464                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 465                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 466
 467         /* initialize driver struct */
 468         spin_lock_init(&dev->slock);
 469
 470         /* init dma queue */
 471         INIT_LIST_HEAD(&dev->mpegq.active);
 472         INIT_LIST_HEAD(&dev->mpegq.queued);
 473         dev->mpegq.timeout.function = cx8802_timeout;
 474         dev->mpegq.timeout.data     = (unsigned long)dev;
 475         init_timer(&dev->mpegq.timeout);
 476         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 477                           MO_TS_DMACNTRL,0x11,0x00);
 478
 479         /* get irq */
 480         err = request_irq(dev->pci->irq, cx8802_irq,
 481                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 482         if (err < 0) {
 483                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 484                        dev->core->name, dev->pci->irq);
 485                 return err;
 486         }
 487         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 488
 489         /* everything worked */
 490         pci_set_drvdata(dev->pci,dev);
 491         return 0;
 492 }
 493
 494 void cx8802_fini_common(struct cx8802_dev *dev)
 495 {
 496         dprintk( 2, "cx8802_fini_common\n" );
 497         cx8802_stop_dma(dev);
 498         pci_disable_device(dev->pci);
 499
 500         /* unregister stuff */
 501         free_irq(dev->pci->irq, dev);
 502         pci_set_drvdata(dev->pci, NULL);
 503
 504         /* free memory */
 505         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 506 }
 507
 508 /* ----------------------------------------------------------- */
 509
 510 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 511 {
 512         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 513         struct cx88_core *core = dev->core;
 514
 515         /* stop mpeg dma */
 516         spin_lock(&dev->slock);
 517         if (!list_empty(&dev->mpegq.active)) {
 518                 dprintk( 2, "suspend\n" );
 519                 printk("%s: suspend mpeg\n", core->name);
 520                 cx8802_stop_dma(dev);
 521                 del_timer(&dev->mpegq.timeout);
 522         }
 523         spin_unlock(&dev->slock);
 524
 525         /* FIXME -- shutdown device */
 526         cx88_shutdown(dev->core);
 527
 528         pci_save_state(pci_dev);
 529         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 530                 pci_disable_device(pci_dev);
 531                 dev->state.disabled = 1;
 532         }
 533         return 0;
 534 }
 535
 536 int cx8802_resume_common(struct pci_dev *pci_dev)
 537 {
 538         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 539         struct cx88_core *core = dev->core;
 540         int err;
 541
 542         if (dev->state.disabled) {
 543                 err=pci_enable_device(pci_dev);
 544                 if (err) {
 545                         printk(KERN_ERR "%s: can't enable device\n",
 546                                                dev->core->name);
 547                         return err;
 548                 }
 549                 dev->state.disabled = 0;
 550         }
 551         err=pci_set_power_state(pci_dev, PCI_D0);
 552         if (err) {
 553                 printk(KERN_ERR "%s: can't enable device\n",
 554                                                dev->core->name);
 555                 pci_disable_device(pci_dev);
 556                 dev->state.disabled = 1;
 557
 558                 return err;
 559         }
 560         pci_restore_state(pci_dev);
 561
 562         /* FIXME: re-initialize hardware */
 563         cx88_reset(dev->core);
 564
 565         /* restart video+vbi capture */
 566         spin_lock(&dev->slock);
 567         if (!list_empty(&dev->mpegq.active)) {
 568                 printk("%s: resume mpeg\n", core->name);
 569                 cx8802_restart_queue(dev,&dev->mpegq);
 570         }
 571         spin_unlock(&dev->slock);
 572
 573         return 0;
 574 }
 575
 576 #if defined(CONFIG_VIDEO_CX88_BLACKBIRD) || \
 577     defined(CONFIG_VIDEO_CX88_BLACKBIRD_MODULE)
 578 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 579 {
 580         int minor = iminor(inode);
 581         struct cx8802_dev *h = NULL;
 582         struct list_head *list;
 583
 584         list_for_each(list,&cx8802_devlist) {
 585                 h = list_entry(list, struct cx8802_dev, devlist);
 586                 if (h->mpeg_dev && h->mpeg_dev->minor == minor)
 587                         return h;
 588         }
 589
 590         return NULL;
 591 }
 592 EXPORT_SYMBOL(cx8802_get_device);
 593 #endif
 594
 595 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 596 {
 597         struct cx8802_dev *h = NULL;
 598         struct cx8802_driver *d = NULL;
 599         struct list_head *list;
 600         struct list_head *list2;
 601
 602         list_for_each(list,&cx8802_devlist) {
 603                 h = list_entry(list, struct cx8802_dev, devlist);
 604                 if (h != dev)
 605                         continue;
 606
 607                 list_for_each(list2, &h->drvlist.devlist) {
 608                         d = list_entry(list2, struct cx8802_driver, devlist);
 609
 610                         /* only unregister the correct driver type */
 611                         if (d->type_id == btype) {
 612                                 return d;
 613                         }
 614                 }
 615         }
 616
 617         return NULL;
 618 }
 619
 620 /* Driver asked for hardware access. */
 621 static int cx8802_request_acquire(struct cx8802_driver *drv)
 622 {
 623         struct cx88_core *core = drv->core;
 624
 625         /* Fail a request for hardware if the device is busy. */
 626         if (core->active_type_id != CX88_BOARD_NONE)
 627                 return -EBUSY;
 628
 629         if (drv->advise_acquire)
 630         {
 631                 core->active_type_id = drv->type_id;
 632                 drv->advise_acquire(drv);
 633
 634                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, 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)
 646         {
 647                 drv->advise_release(drv);
 648                 core->active_type_id = CX88_BOARD_NONE;
 649                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, 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 *h;
 680         struct cx8802_driver *driver;
 681         struct list_head *list;
 682         int err = 0, i = 0;
 683
 684         printk(KERN_INFO
 685                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 686                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 687                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 688
 689         if ((err = cx8802_check_driver(drv)) != 0) {
 690                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 691                 return err;
 692         }
 693
 694         list_for_each(list,&cx8802_devlist) {
 695                 h = list_entry(list, struct cx8802_dev, devlist);
 696
 697                 printk(KERN_INFO
 698                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 699                        h->core->name, h->pci->subsystem_vendor,
 700                        h->pci->subsystem_device, h->core->board.name,
 701                        h->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 = h->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->devlist,&h->drvlist.devlist);
 721                         mutex_unlock(&drv->core->lock);
 722                 } else {
 723                         printk(KERN_ERR
 724                                "%s/2: cx8802 probe failed, err = %d\n",
 725                                h->core->name, err);
 726                 }
 727
 728         }
 729         if (i == 0)
 730                 err = -ENODEV;
 731         else
 732                 err = 0;
 733
 734         return err;
 735 }
 736
 737 int cx8802_unregister_driver(struct cx8802_driver *drv)
 738 {
 739         struct cx8802_dev *h;
 740         struct cx8802_driver *d;
 741         struct list_head *list;
 742         struct list_head *list2, *q;
 743         int err = 0, i = 0;
 744
 745         printk(KERN_INFO
 746                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 747                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 748                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 749
 750         list_for_each(list,&cx8802_devlist) {
 751                 i++;
 752                 h = list_entry(list, struct cx8802_dev, devlist);
 753
 754                 printk(KERN_INFO
 755                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 756                        h->core->name, h->pci->subsystem_vendor,
 757                        h->pci->subsystem_device, h->core->board.name,
 758                        h->core->boardnr);
 759
 760                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
 761                         d = list_entry(list2, struct cx8802_driver, devlist);
 762
 763                         /* only unregister the correct driver type */
 764                         if (d->type_id != drv->type_id)
 765                                 continue;
 766
 767                         err = d->remove(d);
 768                         if (err == 0) {
 769                                 mutex_lock(&drv->core->lock);
 770                                 list_del(list2);
 771                                 mutex_unlock(&drv->core->lock);
 772                         } else
 773                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 774                                        "failed (%d)\n", h->core->name, err);
 775
 776                 }
 777
 778         }
 779
 780         return err;
 781 }
 782
 783 /* ----------------------------------------------------------- */
 784 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 785                                const struct pci_device_id *pci_id)
 786 {
 787         struct cx8802_dev *dev;
 788         struct cx88_core  *core;
 789         int err;
 790
 791         /* general setup */
 792         core = cx88_core_get(pci_dev);
 793         if (NULL == core)
 794                 return -EINVAL;
 795
 796         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 797
 798         err = -ENODEV;
 799         if (!core->board.mpeg)
 800                 goto fail_core;
 801
 802         err = -ENOMEM;
 803         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 804         if (NULL == dev)
 805                 goto fail_core;
 806         dev->pci = pci_dev;
 807         dev->core = core;
 808
 809         err = cx8802_init_common(dev);
 810         if (err != 0)
 811                 goto fail_free;
 812
 813         INIT_LIST_HEAD(&dev->drvlist.devlist);
 814         list_add_tail(&dev->devlist,&cx8802_devlist);
 815
 816         /* Maintain a reference so cx88-video can query the 8802 device. */
 817         core->dvbdev = dev;
 818
 819         /* now autoload cx88-dvb or cx88-blackbird */
 820         request_modules(dev);
 821         return 0;
 822
 823  fail_free:
 824         kfree(dev);
 825  fail_core:
 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         struct cx8802_driver *h;
 834         struct list_head *list;
 835
 836         dev = pci_get_drvdata(pci_dev);
 837
 838         dprintk( 1, "%s\n", __FUNCTION__);
 839
 840         list_for_each(list,&dev->drvlist.devlist) {
 841                 h = list_entry(list, struct cx8802_driver, devlist);
 842                 dprintk( 1, " ->driver\n");
 843                 if (h->remove == NULL) {
 844                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
 845                         continue;
 846                 }
 847                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
 848                 cx8802_unregister_driver(h);
 849                 list_del(&dev->drvlist.devlist);
 850         }
 851
 852         /* Destroy any 8802 reference. */
 853         dev->core->dvbdev = NULL;
 854
 855         /* common */
 856         cx8802_fini_common(dev);
 857         cx88_core_put(dev->core,dev->pci);
 858         kfree(dev);
 859 }
 860
 861 static struct pci_device_id cx8802_pci_tbl[] = {
 862         {
 863                 .vendor       = 0x14f1,
 864                 .device       = 0x8802,
 865                 .subvendor    = PCI_ANY_ID,
 866                 .subdevice    = PCI_ANY_ID,
 867         },{
 868                 /* --- end of list --- */
 869         }
 870 };
 871 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 872
 873 static struct pci_driver cx8802_pci_driver = {
 874         .name     = "cx88-mpeg driver manager",
 875         .id_table = cx8802_pci_tbl,
 876         .probe    = cx8802_probe,
 877         .remove   = __devexit_p(cx8802_remove),
 878 };
 879
 880 static int cx8802_init(void)
 881 {
 882         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
 883                (CX88_VERSION_CODE >> 16) & 0xff,
 884                (CX88_VERSION_CODE >>  8) & 0xff,
 885                CX88_VERSION_CODE & 0xff);
 886 #ifdef SNAPSHOT
 887         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 888                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 889 #endif
 890         return pci_register_driver(&cx8802_pci_driver);
 891 }
 892
 893 static void cx8802_fini(void)
 894 {
 895         pci_unregister_driver(&cx8802_pci_driver);
 896 }
 897
 898 module_init(cx8802_init);
 899 module_exit(cx8802_fini);
 900 EXPORT_SYMBOL(cx8802_buf_prepare);
 901 EXPORT_SYMBOL(cx8802_buf_queue);
 902 EXPORT_SYMBOL(cx8802_cancel_buffers);
 903
 904 EXPORT_SYMBOL(cx8802_init_common);
 905 EXPORT_SYMBOL(cx8802_fini_common);
 906
 907 EXPORT_SYMBOL(cx8802_register_driver);
 908 EXPORT_SYMBOL(cx8802_unregister_driver);
 909 EXPORT_SYMBOL(cx8802_get_driver);
 910 /* ----------------------------------------------------------- */
 911 /*
 912  * Local variables:
 913  * c-basic-offset: 8
 914  * End:
 915  * 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
 916  */