git.oblomov.eu Git - 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
 182         dprintk( 1, "cx8802_restart_queue\n" );
 183         if (list_empty(&q->active))
 184         {
 185                 struct cx88_buffer *prev;
 186                 prev = NULL;
 187
 188                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 189
 190                 for (;;) {
 191                         if (list_empty(&q->queued))
 192                                 return 0;
 193                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 194                         if (NULL == prev) {
 195                                 list_del(&buf->vb.queue);
 196                                 list_add_tail(&buf->vb.queue,&q->active);
 197                                 cx8802_start_dma(dev, q, buf);
 198                                 buf->vb.state = STATE_ACTIVE;
 199                                 buf->count    = q->count++;
 200                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 201                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 202                                         buf,buf->vb.i);
 203
 204                         } else if (prev->vb.width  == buf->vb.width  &&
 205                                    prev->vb.height == buf->vb.height &&
 206                                    prev->fmt       == buf->fmt) {
 207                                 list_del(&buf->vb.queue);
 208                                 list_add_tail(&buf->vb.queue,&q->active);
 209                                 buf->vb.state = STATE_ACTIVE;
 210                                 buf->count    = q->count++;
 211                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 212                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 213                                         buf,buf->vb.i);
 214                         } else {
 215                                 return 0;
 216                         }
 217                         prev = buf;
 218                 }
 219                 return 0;
 220         }
 221
 222         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 223         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 224                 buf, buf->vb.i);
 225         cx8802_start_dma(dev, q, buf);
 226         list_for_each_entry(buf, &q->active, vb.queue)
 227                 buf->count = q->count++;
 228         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 229         return 0;
 230 }
 231
 232 /* ------------------------------------------------------------------ */
 233
 234 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 235                         struct cx88_buffer *buf, enum v4l2_field field)
 236 {
 237         int size = dev->ts_packet_size * dev->ts_packet_count;
 238         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 239         int rc;
 240
 241         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
 242         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 243                 return -EINVAL;
 244
 245         if (STATE_NEEDS_INIT == buf->vb.state) {
 246                 buf->vb.width  = dev->ts_packet_size;
 247                 buf->vb.height = dev->ts_packet_count;
 248                 buf->vb.size   = size;
 249                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 250
 251                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 252                         goto fail;
 253                 cx88_risc_databuffer(dev->pci, &buf->risc,
 254                                      dma->sglist,
 255                                      buf->vb.width, buf->vb.height, 0);
 256         }
 257         buf->vb.state = STATE_PREPARED;
 258         return 0;
 259
 260  fail:
 261         cx88_free_buffer(q,buf);
 262         return rc;
 263 }
 264
 265 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 266 {
 267         struct cx88_buffer    *prev;
 268         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 269
 270         dprintk( 1, "cx8802_buf_queue\n" );
 271         /* add jump to stopper */
 272         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 273         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 274
 275         if (list_empty(&cx88q->active)) {
 276                 dprintk( 1, "queue is empty - first active\n" );
 277                 list_add_tail(&buf->vb.queue,&cx88q->active);
 278                 cx8802_start_dma(dev, cx88q, buf);
 279                 buf->vb.state = STATE_ACTIVE;
 280                 buf->count    = cx88q->count++;
 281                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 282                 dprintk(1,"[%p/%d] %s - first active\n",
 283                         buf, buf->vb.i, __FUNCTION__);
 284
 285         } else {
 286                 dprintk( 1, "queue is not empty - append to active\n" );
 287                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 288                 list_add_tail(&buf->vb.queue,&cx88q->active);
 289                 buf->vb.state = STATE_ACTIVE;
 290                 buf->count    = cx88q->count++;
 291                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 292                 dprintk( 1, "[%p/%d] %s - append to active\n",
 293                         buf, buf->vb.i, __FUNCTION__);
 294         }
 295 }
 296
 297 /* ----------------------------------------------------------- */
 298
 299 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 300 {
 301         struct cx88_dmaqueue *q = &dev->mpegq;
 302         struct cx88_buffer *buf;
 303         unsigned long flags;
 304
 305         spin_lock_irqsave(&dev->slock,flags);
 306         while (!list_empty(&q->active)) {
 307                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 308                 list_del(&buf->vb.queue);
 309                 buf->vb.state = STATE_ERROR;
 310                 wake_up(&buf->vb.done);
 311                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 312                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 313         }
 314         if (restart)
 315         {
 316                 dprintk(1, "restarting queue\n" );
 317                 cx8802_restart_queue(dev,q);
 318         }
 319         spin_unlock_irqrestore(&dev->slock,flags);
 320 }
 321
 322 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 323 {
 324         struct cx88_dmaqueue *q = &dev->mpegq;
 325
 326         dprintk( 1, "cx8802_cancel_buffers" );
 327         del_timer_sync(&q->timeout);
 328         cx8802_stop_dma(dev);
 329         do_cancel_buffers(dev,"cancel",0);
 330 }
 331
 332 static void cx8802_timeout(unsigned long data)
 333 {
 334         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 335
 336         dprintk(1, "%s\n",__FUNCTION__);
 337
 338         if (debug)
 339                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 340         cx8802_stop_dma(dev);
 341         do_cancel_buffers(dev,"timeout",1);
 342 }
 343
 344 static char *cx88_mpeg_irqs[32] = {
 345         "ts_risci1", NULL, NULL, NULL,
 346         "ts_risci2", NULL, NULL, NULL,
 347         "ts_oflow",  NULL, NULL, NULL,
 348         "ts_sync",   NULL, NULL, NULL,
 349         "opc_err", "par_err", "rip_err", "pci_abort",
 350         "ts_err?",
 351 };
 352
 353 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 354 {
 355         struct cx88_core *core = dev->core;
 356         u32 status, mask, count;
 357
 358         dprintk( 1, "cx8802_mpeg_irq\n" );
 359         status = cx_read(MO_TS_INTSTAT);
 360         mask   = cx_read(MO_TS_INTMSK);
 361         if (0 == (status & mask))
 362                 return;
 363
 364         cx_write(MO_TS_INTSTAT, status);
 365
 366         if (debug || (status & mask & ~0xff))
 367                 cx88_print_irqbits(core->name, "irq mpeg ",
 368                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 369                                    status, mask);
 370
 371         /* risc op code error */
 372         if (status & (1 << 16)) {
 373                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 374                 cx_clear(MO_TS_DMACNTRL, 0x11);
 375                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 376         }
 377
 378         /* risc1 y */
 379         if (status & 0x01) {
 380                 dprintk( 1, "wake up\n" );
 381                 spin_lock(&dev->slock);
 382                 count = cx_read(MO_TS_GPCNT);
 383                 cx88_wakeup(dev->core, &dev->mpegq, count);
 384                 spin_unlock(&dev->slock);
 385         }
 386
 387         /* risc2 y */
 388         if (status & 0x10) {
 389                 spin_lock(&dev->slock);
 390                 cx8802_restart_queue(dev,&dev->mpegq);
 391                 spin_unlock(&dev->slock);
 392         }
 393
 394         /* other general errors */
 395         if (status & 0x1f0100) {
 396                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 397                 spin_lock(&dev->slock);
 398                 cx8802_stop_dma(dev);
 399                 cx8802_restart_queue(dev,&dev->mpegq);
 400                 spin_unlock(&dev->slock);
 401         }
 402 }
 403
 404 #define MAX_IRQ_LOOP 10
 405
 406 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 407 {
 408         struct cx8802_dev *dev = dev_id;
 409         struct cx88_core *core = dev->core;
 410         u32 status;
 411         int loop, handled = 0;
 412
 413         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 414                 status = cx_read(MO_PCI_INTSTAT) &
 415                         (core->pci_irqmask | PCI_INT_TSINT);
 416                 if (0 == status)
 417                         goto out;
 418                 dprintk( 1, "cx8802_irq\n" );
 419                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 420                 dprintk( 1, "    status: %d\n", status );
 421                 handled = 1;
 422                 cx_write(MO_PCI_INTSTAT, status);
 423
 424                 if (status & core->pci_irqmask)
 425                         cx88_core_irq(core,status);
 426                 if (status & PCI_INT_TSINT)
 427                         cx8802_mpeg_irq(dev);
 428         };
 429         if (MAX_IRQ_LOOP == loop) {
 430                 dprintk( 0, "clearing mask\n" );
 431                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 432                        core->name);
 433                 cx_write(MO_PCI_INTMSK,0);
 434         }
 435
 436  out:
 437         return IRQ_RETVAL(handled);
 438 }
 439
 440 /* ----------------------------------------------------------- */
 441 /* exported stuff                                              */
 442
 443 int cx8802_init_common(struct cx8802_dev *dev)
 444 {
 445         struct cx88_core *core = dev->core;
 446         int err;
 447
 448         /* pci init */
 449         if (pci_enable_device(dev->pci))
 450                 return -EIO;
 451         pci_set_master(dev->pci);
 452         if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
 453                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 454                 return -EIO;
 455         }
 456
 457         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 458         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 459         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 460                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 461                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 462                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 463
 464         /* initialize driver struct */
 465         spin_lock_init(&dev->slock);
 466
 467         /* init dma queue */
 468         INIT_LIST_HEAD(&dev->mpegq.active);
 469         INIT_LIST_HEAD(&dev->mpegq.queued);
 470         dev->mpegq.timeout.function = cx8802_timeout;
 471         dev->mpegq.timeout.data     = (unsigned long)dev;
 472         init_timer(&dev->mpegq.timeout);
 473         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 474                           MO_TS_DMACNTRL,0x11,0x00);
 475
 476         /* get irq */
 477         err = request_irq(dev->pci->irq, cx8802_irq,
 478                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 479         if (err < 0) {
 480                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 481                        dev->core->name, dev->pci->irq);
 482                 return err;
 483         }
 484         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 485
 486         /* everything worked */
 487         pci_set_drvdata(dev->pci,dev);
 488         return 0;
 489 }
 490
 491 void cx8802_fini_common(struct cx8802_dev *dev)
 492 {
 493         dprintk( 2, "cx8802_fini_common\n" );
 494         cx8802_stop_dma(dev);
 495         pci_disable_device(dev->pci);
 496
 497         /* unregister stuff */
 498         free_irq(dev->pci->irq, dev);
 499         pci_set_drvdata(dev->pci, NULL);
 500
 501         /* free memory */
 502         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 503 }
 504
 505 /* ----------------------------------------------------------- */
 506
 507 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 508 {
 509         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 510         struct cx88_core *core = dev->core;
 511
 512         /* stop mpeg dma */
 513         spin_lock(&dev->slock);
 514         if (!list_empty(&dev->mpegq.active)) {
 515                 dprintk( 2, "suspend\n" );
 516                 printk("%s: suspend mpeg\n", core->name);
 517                 cx8802_stop_dma(dev);
 518                 del_timer(&dev->mpegq.timeout);
 519         }
 520         spin_unlock(&dev->slock);
 521
 522         /* FIXME -- shutdown device */
 523         cx88_shutdown(dev->core);
 524
 525         pci_save_state(pci_dev);
 526         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 527                 pci_disable_device(pci_dev);
 528                 dev->state.disabled = 1;
 529         }
 530         return 0;
 531 }
 532
 533 int cx8802_resume_common(struct pci_dev *pci_dev)
 534 {
 535         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 536         struct cx88_core *core = dev->core;
 537         int err;
 538
 539         if (dev->state.disabled) {
 540                 err=pci_enable_device(pci_dev);
 541                 if (err) {
 542                         printk(KERN_ERR "%s: can't enable device\n",
 543                                                dev->core->name);
 544                         return err;
 545                 }
 546                 dev->state.disabled = 0;
 547         }
 548         err=pci_set_power_state(pci_dev, PCI_D0);
 549         if (err) {
 550                 printk(KERN_ERR "%s: can't enable device\n",
 551                                                dev->core->name);
 552                 pci_disable_device(pci_dev);
 553                 dev->state.disabled = 1;
 554
 555                 return err;
 556         }
 557         pci_restore_state(pci_dev);
 558
 559         /* FIXME: re-initialize hardware */
 560         cx88_reset(dev->core);
 561
 562         /* restart video+vbi capture */
 563         spin_lock(&dev->slock);
 564         if (!list_empty(&dev->mpegq.active)) {
 565                 printk("%s: resume mpeg\n", core->name);
 566                 cx8802_restart_queue(dev,&dev->mpegq);
 567         }
 568         spin_unlock(&dev->slock);
 569
 570         return 0;
 571 }
 572
 573 #if defined(CONFIG_VIDEO_CX88_BLACKBIRD) || \
 574     defined(CONFIG_VIDEO_CX88_BLACKBIRD_MODULE)
 575 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 576 {
 577         int minor = iminor(inode);
 578         struct cx8802_dev *dev;
 579
 580         list_for_each_entry(dev, &cx8802_devlist, devlist)
 581                 if (dev->mpeg_dev && dev->mpeg_dev->minor == minor)
 582                         return dev;
 583
 584         return NULL;
 585 }
 586 EXPORT_SYMBOL(cx8802_get_device);
 587 #endif
 588
 589 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 590 {
 591         struct cx8802_driver *d;
 592
 593         list_for_each_entry(d, &dev->drvlist, drvlist)
 594                 if (d->type_id == btype)
 595                         return d;
 596
 597         return NULL;
 598 }
 599
 600 /* Driver asked for hardware access. */
 601 static int cx8802_request_acquire(struct cx8802_driver *drv)
 602 {
 603         struct cx88_core *core = drv->core;
 604
 605         /* Fail a request for hardware if the device is busy. */
 606         if (core->active_type_id != CX88_BOARD_NONE)
 607                 return -EBUSY;
 608
 609         if (drv->advise_acquire)
 610         {
 611                 core->active_type_id = drv->type_id;
 612                 drv->advise_acquire(drv);
 613
 614                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 615         }
 616
 617         return 0;
 618 }
 619
 620 /* Driver asked to release hardware. */
 621 static int cx8802_request_release(struct cx8802_driver *drv)
 622 {
 623         struct cx88_core *core = drv->core;
 624
 625         if (drv->advise_release)
 626         {
 627                 drv->advise_release(drv);
 628                 core->active_type_id = CX88_BOARD_NONE;
 629                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 630         }
 631
 632         return 0;
 633 }
 634
 635 static int cx8802_check_driver(struct cx8802_driver *drv)
 636 {
 637         if (drv == NULL)
 638                 return -ENODEV;
 639
 640         if ((drv->type_id != CX88_MPEG_DVB) &&
 641                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 642                 return -EINVAL;
 643
 644         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 645                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 646                 return -EINVAL;
 647
 648         if ((drv->probe == NULL) ||
 649                 (drv->remove == NULL) ||
 650                 (drv->advise_acquire == NULL) ||
 651                 (drv->advise_release == NULL))
 652                 return -EINVAL;
 653
 654         return 0;
 655 }
 656
 657 int cx8802_register_driver(struct cx8802_driver *drv)
 658 {
 659         struct cx8802_dev *dev;
 660         struct cx8802_driver *driver;
 661         int err, i = 0;
 662
 663         printk(KERN_INFO
 664                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 665                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 666                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 667
 668         if ((err = cx8802_check_driver(drv)) != 0) {
 669                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 670                 return err;
 671         }
 672
 673         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 674                 printk(KERN_INFO
 675                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 676                        dev->core->name, dev->pci->subsystem_vendor,
 677                        dev->pci->subsystem_device, dev->core->board.name,
 678                        dev->core->boardnr);
 679
 680                 /* Bring up a new struct for each driver instance */
 681                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 682                 if (driver == NULL)
 683                         return -ENOMEM;
 684
 685                 /* Snapshot of the driver registration data */
 686                 drv->core = dev->core;
 687                 drv->suspend = cx8802_suspend_common;
 688                 drv->resume = cx8802_resume_common;
 689                 drv->request_acquire = cx8802_request_acquire;
 690                 drv->request_release = cx8802_request_release;
 691                 memcpy(driver, drv, sizeof(*driver));
 692
 693                 err = drv->probe(driver);
 694                 if (err == 0) {
 695                         i++;
 696                         mutex_lock(&drv->core->lock);
 697                         list_add_tail(&driver->drvlist, &dev->drvlist);
 698                         mutex_unlock(&drv->core->lock);
 699                 } else {
 700                         printk(KERN_ERR
 701                                "%s/2: cx8802 probe failed, err = %d\n",
 702                                dev->core->name, err);
 703                 }
 704
 705         }
 706
 707         return i ? 0 : -ENODEV;
 708 }
 709
 710 int cx8802_unregister_driver(struct cx8802_driver *drv)
 711 {
 712         struct cx8802_dev *dev;
 713         struct cx8802_driver *d, *dtmp;
 714         int err = 0;
 715
 716         printk(KERN_INFO
 717                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 718                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 719                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 720
 721         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 722                 printk(KERN_INFO
 723                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 724                        dev->core->name, dev->pci->subsystem_vendor,
 725                        dev->pci->subsystem_device, dev->core->board.name,
 726                        dev->core->boardnr);
 727
 728                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
 729                         /* only unregister the correct driver type */
 730                         if (d->type_id != drv->type_id)
 731                                 continue;
 732
 733                         err = d->remove(d);
 734                         if (err == 0) {
 735                                 mutex_lock(&drv->core->lock);
 736                                 list_del(&d->drvlist);
 737                                 mutex_unlock(&drv->core->lock);
 738                                 kfree(d);
 739                         } else
 740                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 741                                        "failed (%d)\n", dev->core->name, err);
 742                 }
 743
 744         }
 745
 746         return err;
 747 }
 748
 749 /* ----------------------------------------------------------- */
 750 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 751                                const struct pci_device_id *pci_id)
 752 {
 753         struct cx8802_dev *dev;
 754         struct cx88_core  *core;
 755         int err;
 756
 757         /* general setup */
 758         core = cx88_core_get(pci_dev);
 759         if (NULL == core)
 760                 return -EINVAL;
 761
 762         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 763
 764         err = -ENODEV;
 765         if (!core->board.mpeg)
 766                 goto fail_core;
 767
 768         err = -ENOMEM;
 769         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 770         if (NULL == dev)
 771                 goto fail_core;
 772         dev->pci = pci_dev;
 773         dev->core = core;
 774
 775         err = cx8802_init_common(dev);
 776         if (err != 0)
 777                 goto fail_free;
 778
 779         INIT_LIST_HEAD(&dev->drvlist);
 780         list_add_tail(&dev->devlist,&cx8802_devlist);
 781
 782         /* Maintain a reference so cx88-video can query the 8802 device. */
 783         core->dvbdev = dev;
 784
 785         /* now autoload cx88-dvb or cx88-blackbird */
 786         request_modules(dev);
 787         return 0;
 788
 789  fail_free:
 790         kfree(dev);
 791  fail_core:
 792         cx88_core_put(core,pci_dev);
 793         return err;
 794 }
 795
 796 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 797 {
 798         struct cx8802_dev *dev;
 799
 800         dev = pci_get_drvdata(pci_dev);
 801
 802         dprintk( 1, "%s\n", __FUNCTION__);
 803
 804         if (!list_empty(&dev->drvlist)) {
 805                 struct cx8802_driver *drv, *tmp;
 806                 int err;
 807
 808                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
 809                        "while cx8802 sub-drivers still loaded?!\n",
 810                        dev->core->name);
 811
 812                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
 813                         err = drv->remove(drv);
 814                         if (err == 0) {
 815                                 mutex_lock(&drv->core->lock);
 816                                 list_del(&drv->drvlist);
 817                                 mutex_unlock(&drv->core->lock);
 818                         } else
 819                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 820                                        "failed (%d)\n", dev->core->name, err);
 821                         kfree(drv);
 822                 }
 823         }
 824
 825         /* Destroy any 8802 reference. */
 826         dev->core->dvbdev = NULL;
 827
 828         /* common */
 829         cx8802_fini_common(dev);
 830         cx88_core_put(dev->core,dev->pci);
 831         kfree(dev);
 832 }
 833
 834 static struct pci_device_id cx8802_pci_tbl[] = {
 835         {
 836                 .vendor       = 0x14f1,
 837                 .device       = 0x8802,
 838                 .subvendor    = PCI_ANY_ID,
 839                 .subdevice    = PCI_ANY_ID,
 840         },{
 841                 /* --- end of list --- */
 842         }
 843 };
 844 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 845
 846 static struct pci_driver cx8802_pci_driver = {
 847         .name     = "cx88-mpeg driver manager",
 848         .id_table = cx8802_pci_tbl,
 849         .probe    = cx8802_probe,
 850         .remove   = __devexit_p(cx8802_remove),
 851 };
 852
 853 static int cx8802_init(void)
 854 {
 855         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
 856                (CX88_VERSION_CODE >> 16) & 0xff,
 857                (CX88_VERSION_CODE >>  8) & 0xff,
 858                CX88_VERSION_CODE & 0xff);
 859 #ifdef SNAPSHOT
 860         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 861                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 862 #endif
 863         return pci_register_driver(&cx8802_pci_driver);
 864 }
 865
 866 static void cx8802_fini(void)
 867 {
 868         pci_unregister_driver(&cx8802_pci_driver);
 869 }
 870
 871 module_init(cx8802_init);
 872 module_exit(cx8802_fini);
 873 EXPORT_SYMBOL(cx8802_buf_prepare);
 874 EXPORT_SYMBOL(cx8802_buf_queue);
 875 EXPORT_SYMBOL(cx8802_cancel_buffers);
 876
 877 EXPORT_SYMBOL(cx8802_init_common);
 878 EXPORT_SYMBOL(cx8802_fini_common);
 879
 880 EXPORT_SYMBOL(cx8802_register_driver);
 881 EXPORT_SYMBOL(cx8802_unregister_driver);
 882 EXPORT_SYMBOL(cx8802_get_driver);
 883 /* ----------------------------------------------------------- */
 884 /*
 885  * Local variables:
 886  * c-basic-offset: 8
 887  * End:
 888  * 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
 889  */