drivers/media/video/cx88/cx88-mpeg.c

   1 /*
   2  *
   3  *  Support for the mpeg transport stream transfers
   4  *  PCI function #2 of the cx2388x.
   5  *
   6  *    (c) 2004 Jelle Foks <jelle@foks.8m.com>
   7  *    (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
   8  *    (c) 2004 Gerd Knorr <kraxel@bytesex.org>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/moduleparam.h>
  27 #include <linux/init.h>
  28 #include <linux/device.h>
  29 #include <linux/dma-mapping.h>
  30 #include <linux/interrupt.h>
  31 #include <linux/dma-mapping.h>
  32 #include <asm/delay.h>
  33
  34 #include "cx88.h"
  35
  36 /* ------------------------------------------------------------------ */
  37
  38 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
  39 MODULE_AUTHOR("Jelle Foks <jelle@foks.8m.com>");
  40 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
  41 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
  42 MODULE_LICENSE("GPL");
  43
  44 static unsigned int debug = 0;
  45 module_param(debug,int,0644);
  46 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
  47
  48 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  49         printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
  50
  51 #define mpeg_dbg(level,fmt, arg...)     if (debug >= level) \
  52         printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
  53
  54 #if defined(CONFIG_MODULES) && defined(MODULE)
  55 static void request_module_async(struct work_struct *work)
  56 {
  57         struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
  58
  59         if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_DVB)
  60                 request_module("cx88-dvb");
  61         if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_BLACKBIRD)
  62                 request_module("cx88-blackbird");
  63 }
  64
  65 static void request_modules(struct cx8802_dev *dev)
  66 {
  67         INIT_WORK(&dev->request_module_wk, request_module_async);
  68         schedule_work(&dev->request_module_wk);
  69 }
  70 #else
  71 #define request_modules(dev)
  72 #endif /* CONFIG_MODULES */
  73
  74
  75 static LIST_HEAD(cx8802_devlist);
  76 /* ------------------------------------------------------------------ */
  77
  78 static int cx8802_start_dma(struct cx8802_dev    *dev,
  79                             struct cx88_dmaqueue *q,
  80                             struct cx88_buffer   *buf)
  81 {
  82         struct cx88_core *core = dev->core;
  83
  84         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n", dev->width, dev->height, buf->vb.field);
  85
  86         /* setup fifo + format */
  87         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  88                                 dev->ts_packet_size, buf->risc.dma);
  89
  90         /* write TS length to chip */
  91         cx_write(MO_TS_LNGTH, buf->vb.width);
  92
  93         /* FIXME: this needs a review.
  94          * also: move to cx88-blackbird + cx88-dvb source files? */
  95
  96         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
  97
  98         if ( (core->active_type_id == CX88_MPEG_DVB) &&
  99                 (cx88_boards[core->board].mpeg & CX88_MPEG_DVB) ) {
 100
 101                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 102                 /* negedge driven & software reset */
 103                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 104                 udelay(100);
 105                 cx_write(MO_PINMUX_IO, 0x00);
 106                 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
 107                 switch (core->board) {
 108                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 109                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 110                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 111                 case CX88_BOARD_PCHDTV_HD5500:
 112                         cx_write(TS_SOP_STAT, 1<<13);
 113                         break;
 114                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 115                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 116                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 117                         udelay(100);
 118                         break;
 119                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 120                         break;
 121                 default:
 122                         cx_write(TS_SOP_STAT, 0x00);
 123                         break;
 124                 }
 125                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 126                 udelay(100);
 127         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 128                 (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) ) {
 129                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 130                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 131
 132                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 133                 udelay(100);
 134
 135                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 136                 cx_write(TS_VALERR_CNTRL, 0x2000);
 137
 138                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 139                 udelay(100);
 140         } else {
 141                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
 142                         cx88_boards[core->board].mpeg );
 143                 return -EINVAL;
 144         }
 145
 146         /* reset counter */
 147         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 148         q->count = 1;
 149
 150         /* enable irqs */
 151         dprintk( 1, "setting the interrupt mask\n" );
 152         cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
 153         cx_set(MO_TS_INTMSK,  0x1f0011);
 154
 155         /* start dma */
 156         cx_set(MO_DEV_CNTRL2, (1<<5));
 157         cx_set(MO_TS_DMACNTRL, 0x11);
 158         return 0;
 159 }
 160
 161 static int cx8802_stop_dma(struct cx8802_dev *dev)
 162 {
 163         struct cx88_core *core = dev->core;
 164         dprintk( 1, "cx8802_stop_dma\n" );
 165
 166         /* stop dma */
 167         cx_clear(MO_TS_DMACNTRL, 0x11);
 168
 169         /* disable irqs */
 170         cx_clear(MO_PCI_INTMSK, 0x000004);
 171         cx_clear(MO_TS_INTMSK, 0x1f0011);
 172
 173         /* Reset the controller */
 174         cx_write(TS_GEN_CNTRL, 0xcd);
 175         return 0;
 176 }
 177
 178 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 179                                 struct cx88_dmaqueue *q)
 180 {
 181         struct cx88_buffer *buf;
 182         struct list_head *item;
 183
 184        dprintk( 1, "cx8802_restart_queue\n" );
 185         if (list_empty(&q->active))
 186         {
 187                struct cx88_buffer *prev;
 188                prev = NULL;
 189
 190                dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 191
 192                for (;;) {
 193                        if (list_empty(&q->queued))
 194                                return 0;
 195                        buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 196                        if (NULL == prev) {
 197                                list_del(&buf->vb.queue);
 198                                list_add_tail(&buf->vb.queue,&q->active);
 199                                cx8802_start_dma(dev, q, buf);
 200                                buf->vb.state = STATE_ACTIVE;
 201                                buf->count    = q->count++;
 202                                mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 203                                dprintk(1,"[%p/%d] restart_queue - first active\n",
 204                                        buf,buf->vb.i);
 205
 206                        } else if (prev->vb.width  == buf->vb.width  &&
 207                                   prev->vb.height == buf->vb.height &&
 208                                   prev->fmt       == buf->fmt) {
 209                                list_del(&buf->vb.queue);
 210                                list_add_tail(&buf->vb.queue,&q->active);
 211                                buf->vb.state = STATE_ACTIVE;
 212                                buf->count    = q->count++;
 213                                prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 214                                dprintk(1,"[%p/%d] restart_queue - move to active\n",
 215                                        buf,buf->vb.i);
 216                        } else {
 217                                return 0;
 218                        }
 219                        prev = buf;
 220                }
 221                 return 0;
 222         }
 223
 224         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 225         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 226                 buf, buf->vb.i);
 227         cx8802_start_dma(dev, q, buf);
 228         list_for_each(item,&q->active) {
 229                 buf = list_entry(item, struct cx88_buffer, vb.queue);
 230                 buf->count = q->count++;
 231         }
 232         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 233         return 0;
 234 }
 235
 236 /* ------------------------------------------------------------------ */
 237
 238 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 239                         struct cx88_buffer *buf, enum v4l2_field field)
 240 {
 241         int size = dev->ts_packet_size * dev->ts_packet_count;
 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                                      buf->vb.dma.sglist,
 258                                      buf->vb.width, buf->vb.height);
 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(0, "%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) & (core->pci_irqmask | 0x04);
 418                 if (0 == status)
 419                         goto out;
 420                 dprintk( 1, "cx8802_irq\n" );
 421                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 422                 dprintk( 1, "    status: %d\n", status );
 423                 handled = 1;
 424                 cx_write(MO_PCI_INTSTAT, status);
 425
 426                 if (status & core->pci_irqmask)
 427                         cx88_core_irq(core,status);
 428                 if (status & 0x04)
 429                         cx8802_mpeg_irq(dev);
 430         };
 431         if (MAX_IRQ_LOOP == loop) {
 432                 dprintk( 0, "clearing mask\n" );
 433                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 434                        core->name);
 435                 cx_write(MO_PCI_INTMSK,0);
 436         }
 437
 438  out:
 439         return IRQ_RETVAL(handled);
 440 }
 441
 442 /* ----------------------------------------------------------- */
 443 /* exported stuff                                              */
 444
 445 int cx8802_init_common(struct cx8802_dev *dev)
 446 {
 447         struct cx88_core *core = dev->core;
 448         int err;
 449
 450         /* pci init */
 451         if (pci_enable_device(dev->pci))
 452                 return -EIO;
 453         pci_set_master(dev->pci);
 454         if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
 455                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 456                 return -EIO;
 457         }
 458
 459         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 460         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 461         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 462                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 463                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 464                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 465
 466         /* initialize driver struct */
 467         spin_lock_init(&dev->slock);
 468
 469         /* init dma queue */
 470         INIT_LIST_HEAD(&dev->mpegq.active);
 471         INIT_LIST_HEAD(&dev->mpegq.queued);
 472         dev->mpegq.timeout.function = cx8802_timeout;
 473         dev->mpegq.timeout.data     = (unsigned long)dev;
 474         init_timer(&dev->mpegq.timeout);
 475         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 476                           MO_TS_DMACNTRL,0x11,0x00);
 477
 478         /* get irq */
 479         err = request_irq(dev->pci->irq, cx8802_irq,
 480                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 481         if (err < 0) {
 482                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 483                        dev->core->name, dev->pci->irq);
 484                 return err;
 485         }
 486         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 487
 488         /* everything worked */
 489         pci_set_drvdata(dev->pci,dev);
 490         return 0;
 491 }
 492
 493 void cx8802_fini_common(struct cx8802_dev *dev)
 494 {
 495         dprintk( 2, "cx8802_fini_common\n" );
 496         cx8802_stop_dma(dev);
 497         pci_disable_device(dev->pci);
 498
 499         /* unregister stuff */
 500         free_irq(dev->pci->irq, dev);
 501         pci_set_drvdata(dev->pci, NULL);
 502
 503         /* free memory */
 504         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 505 }
 506
 507 /* ----------------------------------------------------------- */
 508
 509 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 510 {
 511         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 512         struct cx88_core *core = dev->core;
 513
 514         /* stop mpeg dma */
 515         spin_lock(&dev->slock);
 516         if (!list_empty(&dev->mpegq.active)) {
 517                 dprintk( 2, "suspend\n" );
 518                 printk("%s: suspend mpeg\n", core->name);
 519                 cx8802_stop_dma(dev);
 520                 del_timer(&dev->mpegq.timeout);
 521         }
 522         spin_unlock(&dev->slock);
 523
 524         /* FIXME -- shutdown device */
 525         cx88_shutdown(dev->core);
 526
 527         pci_save_state(pci_dev);
 528         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 529                 pci_disable_device(pci_dev);
 530                 dev->state.disabled = 1;
 531         }
 532         return 0;
 533 }
 534
 535 int cx8802_resume_common(struct pci_dev *pci_dev)
 536 {
 537         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 538         struct cx88_core *core = dev->core;
 539         int err;
 540
 541         if (dev->state.disabled) {
 542                 err=pci_enable_device(pci_dev);
 543                 if (err) {
 544                         printk(KERN_ERR "%s: can't enable device\n",
 545                                                dev->core->name);
 546                         return err;
 547                 }
 548                 dev->state.disabled = 0;
 549         }
 550         err=pci_set_power_state(pci_dev, PCI_D0);
 551         if (err) {
 552                 printk(KERN_ERR "%s: can't enable device\n",
 553                                                dev->core->name);
 554                 pci_disable_device(pci_dev);
 555                 dev->state.disabled = 1;
 556
 557                 return err;
 558         }
 559         pci_restore_state(pci_dev);
 560
 561         /* FIXME: re-initialize hardware */
 562         cx88_reset(dev->core);
 563
 564         /* restart video+vbi capture */
 565         spin_lock(&dev->slock);
 566         if (!list_empty(&dev->mpegq.active)) {
 567                 printk("%s: resume mpeg\n", core->name);
 568                 cx8802_restart_queue(dev,&dev->mpegq);
 569         }
 570         spin_unlock(&dev->slock);
 571
 572         return 0;
 573 }
 574
 575 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 576 {
 577         int minor = iminor(inode);
 578         struct cx8802_dev *h = NULL;
 579         struct list_head *list;
 580
 581         list_for_each(list,&cx8802_devlist) {
 582                 h = list_entry(list, struct cx8802_dev, devlist);
 583                 if (h->mpeg_dev->minor == minor)
 584                         return h;
 585         }
 586
 587         return NULL;
 588 }
 589
 590 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 591 {
 592         struct cx8802_dev *h = NULL;
 593         struct cx8802_driver *d = NULL;
 594         struct list_head *list;
 595         struct list_head *list2;
 596
 597         list_for_each(list,&cx8802_devlist) {
 598                 h = list_entry(list, struct cx8802_dev, devlist);
 599                 if (h != dev)
 600                         continue;
 601
 602                 list_for_each(list2, &h->drvlist.devlist) {
 603                         d = list_entry(list2, struct cx8802_driver, devlist);
 604
 605                         /* only unregister the correct driver type */
 606                         if (d->type_id == btype) {
 607                                 return d;
 608                         }
 609                 }
 610         }
 611
 612         return NULL;
 613 }
 614
 615 /* Driver asked for hardware access. */
 616 static int cx8802_request_acquire(struct cx8802_driver *drv)
 617 {
 618         struct cx88_core *core = drv->core;
 619
 620         /* Fail a request for hardware if the device is busy. */
 621         if (core->active_type_id != CX88_BOARD_NONE)
 622                 return -EBUSY;
 623
 624         if (drv->advise_acquire)
 625         {
 626                 core->active_type_id = drv->type_id;
 627                 drv->advise_acquire(drv);
 628
 629                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 630         }
 631
 632         return 0;
 633 }
 634
 635 /* Driver asked to release hardware. */
 636 static int cx8802_request_release(struct cx8802_driver *drv)
 637 {
 638         struct cx88_core *core = drv->core;
 639
 640         if (drv->advise_release)
 641         {
 642                 drv->advise_release(drv);
 643                 core->active_type_id = CX88_BOARD_NONE;
 644                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 645         }
 646
 647         return 0;
 648 }
 649
 650 static int cx8802_check_driver(struct cx8802_driver *drv)
 651 {
 652         if (drv == NULL)
 653                 return -ENODEV;
 654
 655         if ((drv->type_id != CX88_MPEG_DVB) &&
 656                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 657                 return -EINVAL;
 658
 659         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 660                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 661                 return -EINVAL;
 662
 663         if ((drv->probe == NULL) ||
 664                 (drv->remove == NULL) ||
 665                 (drv->advise_acquire == NULL) ||
 666                 (drv->advise_release == NULL))
 667                 return -EINVAL;
 668
 669         return 0;
 670 }
 671
 672 int cx8802_register_driver(struct cx8802_driver *drv)
 673 {
 674         struct cx8802_dev *h;
 675         struct cx8802_driver *driver;
 676         struct list_head *list;
 677         int err = 0, i = 0;
 678
 679         printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
 680                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 681                 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 682
 683         if ((err = cx8802_check_driver(drv)) != 0) {
 684                 printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
 685                 return err;
 686         }
 687
 688         list_for_each(list,&cx8802_devlist) {
 689                 h = list_entry(list, struct cx8802_dev, devlist);
 690
 691                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 692                         h->core->name,h->pci->subsystem_vendor,
 693                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 694                         h->core->board);
 695
 696                 /* Bring up a new struct for each driver instance */
 697                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 698                 if (driver == NULL)
 699                         return -ENOMEM;
 700
 701                 /* Snapshot of the driver registration data */
 702                 drv->core = h->core;
 703                 drv->suspend = cx8802_suspend_common;
 704                 drv->resume = cx8802_resume_common;
 705                 drv->request_acquire = cx8802_request_acquire;
 706                 drv->request_release = cx8802_request_release;
 707                 memcpy(driver, drv, sizeof(*driver));
 708
 709                 err = drv->probe(driver);
 710                 if (err == 0) {
 711                         i++;
 712                         mutex_lock(&drv->core->lock);
 713                         list_add_tail(&driver->devlist,&h->drvlist.devlist);
 714                         mutex_unlock(&drv->core->lock);
 715                 } else {
 716                         printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
 717                 }
 718
 719         }
 720         if (i == 0)
 721                 err = -ENODEV;
 722         else
 723                 err = 0;
 724
 725         return err;
 726 }
 727
 728 int cx8802_unregister_driver(struct cx8802_driver *drv)
 729 {
 730         struct cx8802_dev *h;
 731         struct cx8802_driver *d;
 732         struct list_head *list;
 733         struct list_head *list2, *q;
 734         int err = 0, i = 0;
 735
 736         printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
 737                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");
 738
 739         list_for_each(list,&cx8802_devlist) {
 740                 i++;
 741                 h = list_entry(list, struct cx8802_dev, devlist);
 742
 743                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 744                         h->core->name,h->pci->subsystem_vendor,
 745                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 746                         h->core->board);
 747
 748                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
 749                         d = list_entry(list2, struct cx8802_driver, devlist);
 750
 751                         /* only unregister the correct driver type */
 752                         if (d->type_id != drv->type_id)
 753                                 continue;
 754
 755                         err = d->remove(d);
 756                         if (err == 0) {
 757                                 mutex_lock(&drv->core->lock);
 758                                 list_del(list2);
 759                                 mutex_unlock(&drv->core->lock);
 760                         } else
 761                                 printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);
 762
 763                 }
 764
 765         }
 766
 767         return err;
 768 }
 769
 770 /* ----------------------------------------------------------- */
 771 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 772                                const struct pci_device_id *pci_id)
 773 {
 774         struct cx8802_dev *dev;
 775         struct cx88_core  *core;
 776         int err;
 777
 778         /* general setup */
 779         core = cx88_core_get(pci_dev);
 780         if (NULL == core)
 781                 return -EINVAL;
 782
 783         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 784
 785         err = -ENODEV;
 786         if (!cx88_boards[core->board].mpeg)
 787                 goto fail_core;
 788
 789         err = -ENOMEM;
 790         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 791         if (NULL == dev)
 792                 goto fail_core;
 793         dev->pci = pci_dev;
 794         dev->core = core;
 795
 796         err = cx8802_init_common(dev);
 797         if (err != 0)
 798                 goto fail_free;
 799
 800         INIT_LIST_HEAD(&dev->drvlist.devlist);
 801         list_add_tail(&dev->devlist,&cx8802_devlist);
 802
 803         /* Maintain a reference so cx88-video can query the 8802 device. */
 804         core->dvbdev = dev;
 805
 806         /* now autoload cx88-dvb or cx88-blackbird */
 807         request_modules(dev);
 808         return 0;
 809
 810  fail_free:
 811         kfree(dev);
 812  fail_core:
 813         cx88_core_put(core,pci_dev);
 814         return err;
 815 }
 816
 817 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 818 {
 819         struct cx8802_dev *dev;
 820         struct cx8802_driver *h;
 821         struct list_head *list;
 822
 823         dev = pci_get_drvdata(pci_dev);
 824
 825         dprintk( 1, "%s\n", __FUNCTION__);
 826
 827         list_for_each(list,&dev->drvlist.devlist) {
 828                 h = list_entry(list, struct cx8802_driver, devlist);
 829                 dprintk( 1, " ->driver\n");
 830                 if (h->remove == NULL) {
 831                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
 832                         continue;
 833                 }
 834                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
 835                 cx8802_unregister_driver(h);
 836                 list_del(&dev->drvlist.devlist);
 837         }
 838
 839         /* Destroy any 8802 reference. */
 840         dev->core->dvbdev = NULL;
 841
 842         /* common */
 843         cx8802_fini_common(dev);
 844         cx88_core_put(dev->core,dev->pci);
 845         kfree(dev);
 846 }
 847
 848 static struct pci_device_id cx8802_pci_tbl[] = {
 849         {
 850                 .vendor       = 0x14f1,
 851                 .device       = 0x8802,
 852                 .subvendor    = PCI_ANY_ID,
 853                 .subdevice    = PCI_ANY_ID,
 854         },{
 855                 /* --- end of list --- */
 856         }
 857 };
 858 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 859
 860 static struct pci_driver cx8802_pci_driver = {
 861         .name     = "cx88-mpeg driver manager",
 862         .id_table = cx8802_pci_tbl,
 863         .probe    = cx8802_probe,
 864         .remove   = __devexit_p(cx8802_remove),
 865 };
 866
 867 static int cx8802_init(void)
 868 {
 869         printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
 870                (CX88_VERSION_CODE >> 16) & 0xff,
 871                (CX88_VERSION_CODE >>  8) & 0xff,
 872                CX88_VERSION_CODE & 0xff);
 873 #ifdef SNAPSHOT
 874         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 875                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 876 #endif
 877         return pci_register_driver(&cx8802_pci_driver);
 878 }
 879
 880 static void cx8802_fini(void)
 881 {
 882         pci_unregister_driver(&cx8802_pci_driver);
 883 }
 884
 885 module_init(cx8802_init);
 886 module_exit(cx8802_fini);
 887 EXPORT_SYMBOL(cx8802_buf_prepare);
 888 EXPORT_SYMBOL(cx8802_buf_queue);
 889 EXPORT_SYMBOL(cx8802_cancel_buffers);
 890
 891 EXPORT_SYMBOL(cx8802_init_common);
 892 EXPORT_SYMBOL(cx8802_fini_common);
 893
 894 EXPORT_SYMBOL(cx8802_register_driver);
 895 EXPORT_SYMBOL(cx8802_unregister_driver);
 896 EXPORT_SYMBOL(cx8802_get_device);
 897 EXPORT_SYMBOL(cx8802_get_driver);
 898 /* ----------------------------------------------------------- */
 899 /*
 900  * Local variables:
 901  * c-basic-offset: 8
 902  * End:
 903  * 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
 904  */