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/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 <asm/delay.h>
  32
  33 #include "cx88.h"
  34
  35 /* ------------------------------------------------------------------ */
  36
  37 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
  38 MODULE_AUTHOR("Jelle Foks <jelle@foks.8m.com>");
  39 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
  40 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
  41 MODULE_LICENSE("GPL");
  42
  43 static unsigned int debug = 0;
  44 module_param(debug,int,0644);
  45 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
  46
  47 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  48         printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
  49
  50 #define mpeg_dbg(level,fmt, arg...)     if (debug >= level) \
  51         printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
  52
  53 #if defined(CONFIG_MODULES) && defined(MODULE)
  54 static void request_module_async(struct work_struct *work)
  55 {
  56         struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
  57
  58         if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_DVB)
  59                 request_module("cx88-dvb");
  60         if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_BLACKBIRD)
  61                 request_module("cx88-blackbird");
  62 }
  63
  64 static void request_modules(struct cx8802_dev *dev)
  65 {
  66         INIT_WORK(&dev->request_module_wk, request_module_async);
  67         schedule_work(&dev->request_module_wk);
  68 }
  69 #else
  70 #define request_modules(dev)
  71 #endif /* CONFIG_MODULES */
  72
  73
  74 static LIST_HEAD(cx8802_devlist);
  75 /* ------------------------------------------------------------------ */
  76
  77 static int cx8802_start_dma(struct cx8802_dev    *dev,
  78                             struct cx88_dmaqueue *q,
  79                             struct cx88_buffer   *buf)
  80 {
  81         struct cx88_core *core = dev->core;
  82
  83         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n", dev->width, dev->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                 (cx88_boards[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->board) {
 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                 (cx88_boards[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                         cx88_boards[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 | 0x04);
 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, 0x000004);
 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         int rc;
 242
 243         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
 244         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 245                 return -EINVAL;
 246
 247         if (STATE_NEEDS_INIT == buf->vb.state) {
 248                 buf->vb.width  = dev->ts_packet_size;
 249                 buf->vb.height = dev->ts_packet_count;
 250                 buf->vb.size   = size;
 251                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 252
 253                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 254                         goto fail;
 255                 cx88_risc_databuffer(dev->pci, &buf->risc,
 256                                      buf->vb.dma.sglist,
 257                                      buf->vb.width, buf->vb.height);
 258         }
 259         buf->vb.state = STATE_PREPARED;
 260         return 0;
 261
 262  fail:
 263         cx88_free_buffer(q,buf);
 264         return rc;
 265 }
 266
 267 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 268 {
 269         struct cx88_buffer    *prev;
 270         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 271
 272         dprintk( 1, "cx8802_buf_queue\n" );
 273         /* add jump to stopper */
 274         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 275         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 276
 277         if (list_empty(&cx88q->active)) {
 278                 dprintk( 1, "queue is empty - first active\n" );
 279                 list_add_tail(&buf->vb.queue,&cx88q->active);
 280                 cx8802_start_dma(dev, cx88q, buf);
 281                 buf->vb.state = STATE_ACTIVE;
 282                 buf->count    = cx88q->count++;
 283                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 284                 dprintk(1,"[%p/%d] %s - first active\n",
 285                         buf, buf->vb.i, __FUNCTION__);
 286
 287         } else {
 288                 dprintk( 1, "queue is not empty - append to active\n" );
 289                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 290                 list_add_tail(&buf->vb.queue,&cx88q->active);
 291                 buf->vb.state = STATE_ACTIVE;
 292                 buf->count    = cx88q->count++;
 293                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 294                 dprintk( 1, "[%p/%d] %s - append to active\n",
 295                         buf, buf->vb.i, __FUNCTION__);
 296         }
 297 }
 298
 299 /* ----------------------------------------------------------- */
 300
 301 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 302 {
 303         struct cx88_dmaqueue *q = &dev->mpegq;
 304         struct cx88_buffer *buf;
 305         unsigned long flags;
 306
 307         spin_lock_irqsave(&dev->slock,flags);
 308         while (!list_empty(&q->active)) {
 309                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 310                 list_del(&buf->vb.queue);
 311                 buf->vb.state = STATE_ERROR;
 312                 wake_up(&buf->vb.done);
 313                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 314                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 315         }
 316         if (restart)
 317         {
 318                 dprintk(1, "restarting queue\n" );
 319                 cx8802_restart_queue(dev,q);
 320         }
 321         spin_unlock_irqrestore(&dev->slock,flags);
 322 }
 323
 324 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 325 {
 326         struct cx88_dmaqueue *q = &dev->mpegq;
 327
 328         dprintk( 1, "cx8802_cancel_buffers" );
 329         del_timer_sync(&q->timeout);
 330         cx8802_stop_dma(dev);
 331         do_cancel_buffers(dev,"cancel",0);
 332 }
 333
 334 static void cx8802_timeout(unsigned long data)
 335 {
 336         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 337
 338         dprintk(0, "%s\n",__FUNCTION__);
 339
 340         if (debug)
 341                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 342         cx8802_stop_dma(dev);
 343         do_cancel_buffers(dev,"timeout",1);
 344 }
 345
 346 static char *cx88_mpeg_irqs[32] = {
 347         "ts_risci1", NULL, NULL, NULL,
 348         "ts_risci2", NULL, NULL, NULL,
 349         "ts_oflow",  NULL, NULL, NULL,
 350         "ts_sync",   NULL, NULL, NULL,
 351         "opc_err", "par_err", "rip_err", "pci_abort",
 352         "ts_err?",
 353 };
 354
 355 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 356 {
 357         struct cx88_core *core = dev->core;
 358         u32 status, mask, count;
 359
 360         dprintk( 1, "cx8802_mpeg_irq\n" );
 361         status = cx_read(MO_TS_INTSTAT);
 362         mask   = cx_read(MO_TS_INTMSK);
 363         if (0 == (status & mask))
 364                 return;
 365
 366         cx_write(MO_TS_INTSTAT, status);
 367
 368         if (debug || (status & mask & ~0xff))
 369                 cx88_print_irqbits(core->name, "irq mpeg ",
 370                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 371                                    status, mask);
 372
 373         /* risc op code error */
 374         if (status & (1 << 16)) {
 375                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 376                 cx_clear(MO_TS_DMACNTRL, 0x11);
 377                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 378         }
 379
 380         /* risc1 y */
 381         if (status & 0x01) {
 382                 dprintk( 1, "wake up\n" );
 383                 spin_lock(&dev->slock);
 384                 count = cx_read(MO_TS_GPCNT);
 385                 cx88_wakeup(dev->core, &dev->mpegq, count);
 386                 spin_unlock(&dev->slock);
 387         }
 388
 389         /* risc2 y */
 390         if (status & 0x10) {
 391                 spin_lock(&dev->slock);
 392                 cx8802_restart_queue(dev,&dev->mpegq);
 393                 spin_unlock(&dev->slock);
 394         }
 395
 396         /* other general errors */
 397         if (status & 0x1f0100) {
 398                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 399                 spin_lock(&dev->slock);
 400                 cx8802_stop_dma(dev);
 401                 cx8802_restart_queue(dev,&dev->mpegq);
 402                 spin_unlock(&dev->slock);
 403         }
 404 }
 405
 406 #define MAX_IRQ_LOOP 10
 407
 408 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 409 {
 410         struct cx8802_dev *dev = dev_id;
 411         struct cx88_core *core = dev->core;
 412         u32 status;
 413         int loop, handled = 0;
 414
 415         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 416                 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
 417                 if (0 == status)
 418                         goto out;
 419                 dprintk( 1, "cx8802_irq\n" );
 420                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 421                 dprintk( 1, "    status: %d\n", status );
 422                 handled = 1;
 423                 cx_write(MO_PCI_INTSTAT, status);
 424
 425                 if (status & core->pci_irqmask)
 426                         cx88_core_irq(core,status);
 427                 if (status & 0x04)
 428                         cx8802_mpeg_irq(dev);
 429         };
 430         if (MAX_IRQ_LOOP == loop) {
 431                 dprintk( 0, "clearing mask\n" );
 432                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 433                        core->name);
 434                 cx_write(MO_PCI_INTMSK,0);
 435         }
 436
 437  out:
 438         return IRQ_RETVAL(handled);
 439 }
 440
 441 /* ----------------------------------------------------------- */
 442 /* exported stuff                                              */
 443
 444 int cx8802_init_common(struct cx8802_dev *dev)
 445 {
 446         struct cx88_core *core = dev->core;
 447         int err;
 448
 449         /* pci init */
 450         if (pci_enable_device(dev->pci))
 451                 return -EIO;
 452         pci_set_master(dev->pci);
 453         if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
 454                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 455                 return -EIO;
 456         }
 457
 458         pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
 459         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 460         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 461                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 462                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 463                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 464
 465         /* initialize driver struct */
 466         spin_lock_init(&dev->slock);
 467
 468         /* init dma queue */
 469         INIT_LIST_HEAD(&dev->mpegq.active);
 470         INIT_LIST_HEAD(&dev->mpegq.queued);
 471         dev->mpegq.timeout.function = cx8802_timeout;
 472         dev->mpegq.timeout.data     = (unsigned long)dev;
 473         init_timer(&dev->mpegq.timeout);
 474         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 475                           MO_TS_DMACNTRL,0x11,0x00);
 476
 477         /* get irq */
 478         err = request_irq(dev->pci->irq, cx8802_irq,
 479                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 480         if (err < 0) {
 481                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 482                        dev->core->name, dev->pci->irq);
 483                 return err;
 484         }
 485         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 486
 487         /* everything worked */
 488         pci_set_drvdata(dev->pci,dev);
 489         return 0;
 490 }
 491
 492 void cx8802_fini_common(struct cx8802_dev *dev)
 493 {
 494         dprintk( 2, "cx8802_fini_common\n" );
 495         cx8802_stop_dma(dev);
 496         pci_disable_device(dev->pci);
 497
 498         /* unregister stuff */
 499         free_irq(dev->pci->irq, dev);
 500         pci_set_drvdata(dev->pci, NULL);
 501
 502         /* free memory */
 503         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 504 }
 505
 506 /* ----------------------------------------------------------- */
 507
 508 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 509 {
 510         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 511         struct cx88_core *core = dev->core;
 512
 513         /* stop mpeg dma */
 514         spin_lock(&dev->slock);
 515         if (!list_empty(&dev->mpegq.active)) {
 516                 dprintk( 2, "suspend\n" );
 517                 printk("%s: suspend mpeg\n", core->name);
 518                 cx8802_stop_dma(dev);
 519                 del_timer(&dev->mpegq.timeout);
 520         }
 521         spin_unlock(&dev->slock);
 522
 523         /* FIXME -- shutdown device */
 524         cx88_shutdown(dev->core);
 525
 526         pci_save_state(pci_dev);
 527         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 528                 pci_disable_device(pci_dev);
 529                 dev->state.disabled = 1;
 530         }
 531         return 0;
 532 }
 533
 534 int cx8802_resume_common(struct pci_dev *pci_dev)
 535 {
 536         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 537         struct cx88_core *core = dev->core;
 538         int err;
 539
 540         if (dev->state.disabled) {
 541                 err=pci_enable_device(pci_dev);
 542                 if (err) {
 543                         printk(KERN_ERR "%s: can't enable device\n",
 544                                                dev->core->name);
 545                         return err;
 546                 }
 547                 dev->state.disabled = 0;
 548         }
 549         err=pci_set_power_state(pci_dev, PCI_D0);
 550         if (err) {
 551                 printk(KERN_ERR "%s: can't enable device\n",
 552                                                dev->core->name);
 553                 pci_disable_device(pci_dev);
 554                 dev->state.disabled = 1;
 555
 556                 return err;
 557         }
 558         pci_restore_state(pci_dev);
 559
 560         /* FIXME: re-initialize hardware */
 561         cx88_reset(dev->core);
 562
 563         /* restart video+vbi capture */
 564         spin_lock(&dev->slock);
 565         if (!list_empty(&dev->mpegq.active)) {
 566                 printk("%s: resume mpeg\n", core->name);
 567                 cx8802_restart_queue(dev,&dev->mpegq);
 568         }
 569         spin_unlock(&dev->slock);
 570
 571         return 0;
 572 }
 573
 574 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 575 {
 576         int minor = iminor(inode);
 577         struct cx8802_dev *h = NULL;
 578         struct list_head *list;
 579
 580         list_for_each(list,&cx8802_devlist) {
 581                 h = list_entry(list, struct cx8802_dev, devlist);
 582                 if (h->mpeg_dev->minor == minor)
 583                         return h;
 584         }
 585
 586         return NULL;
 587 }
 588
 589 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 590 {
 591         struct cx8802_dev *h = NULL;
 592         struct cx8802_driver *d = NULL;
 593         struct list_head *list;
 594         struct list_head *list2;
 595
 596         list_for_each(list,&cx8802_devlist) {
 597                 h = list_entry(list, struct cx8802_dev, devlist);
 598                 if (h != dev)
 599                         continue;
 600
 601                 list_for_each(list2, &h->drvlist.devlist) {
 602                         d = list_entry(list2, struct cx8802_driver, devlist);
 603
 604                         /* only unregister the correct driver type */
 605                         if (d->type_id == btype) {
 606                                 return d;
 607                         }
 608                 }
 609         }
 610
 611         return NULL;
 612 }
 613
 614 /* Driver asked for hardware access. */
 615 int cx8802_request_acquire(struct cx8802_driver *drv)
 616 {
 617         struct cx88_core *core = drv->core;
 618
 619         /* Fail a request for hardware if the device is busy. */
 620         if (core->active_type_id != CX88_BOARD_NONE)
 621                 return -EBUSY;
 622
 623         if (drv->advise_acquire)
 624         {
 625                 core->active_type_id = drv->type_id;
 626                 drv->advise_acquire(drv);
 627
 628                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 629         }
 630
 631         return 0;
 632 }
 633
 634 /* Driver asked to release hardware. */
 635 int cx8802_request_release(struct cx8802_driver *drv)
 636 {
 637         struct cx88_core *core = drv->core;
 638
 639         if (drv->advise_release)
 640         {
 641                 drv->advise_release(drv);
 642                 core->active_type_id = CX88_BOARD_NONE;
 643                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 644         }
 645
 646         return 0;
 647 }
 648
 649 static int cx8802_check_driver(struct cx8802_driver *drv)
 650 {
 651         if (drv == NULL)
 652                 return -ENODEV;
 653
 654         if ((drv->type_id != CX88_MPEG_DVB) &&
 655                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 656                 return -EINVAL;
 657
 658         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 659                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 660                 return -EINVAL;
 661
 662         if ((drv->probe == NULL) ||
 663                 (drv->remove == NULL) ||
 664                 (drv->advise_acquire == NULL) ||
 665                 (drv->advise_release == NULL))
 666                 return -EINVAL;
 667
 668         return 0;
 669 }
 670
 671 int cx8802_register_driver(struct cx8802_driver *drv)
 672 {
 673         struct cx8802_dev *h;
 674         struct cx8802_driver *driver;
 675         struct list_head *list;
 676         int err = 0, i = 0;
 677
 678         printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
 679                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 680                 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 681
 682         if ((err = cx8802_check_driver(drv)) != 0) {
 683                 printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
 684                 return err;
 685         }
 686
 687         list_for_each(list,&cx8802_devlist) {
 688                 h = list_entry(list, struct cx8802_dev, devlist);
 689
 690                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 691                         h->core->name,h->pci->subsystem_vendor,
 692                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 693                         h->core->board);
 694
 695                 /* Bring up a new struct for each driver instance */
 696                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 697                 if (driver == NULL)
 698                         return -ENOMEM;
 699
 700                 /* Snapshot of the driver registration data */
 701                 drv->core = h->core;
 702                 drv->suspend = cx8802_suspend_common;
 703                 drv->resume = cx8802_resume_common;
 704                 drv->request_acquire = cx8802_request_acquire;
 705                 drv->request_release = cx8802_request_release;
 706                 memcpy(driver, drv, sizeof(*driver));
 707
 708                 err = drv->probe(driver);
 709                 if (err == 0) {
 710                         i++;
 711                         mutex_lock(&drv->core->lock);
 712                         list_add_tail(&driver->devlist,&h->drvlist.devlist);
 713                         mutex_unlock(&drv->core->lock);
 714                 } else {
 715                         printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
 716                 }
 717
 718         }
 719         if (i == 0)
 720                 err = -ENODEV;
 721         else
 722                 err = 0;
 723
 724         return err;
 725 }
 726
 727 int cx8802_unregister_driver(struct cx8802_driver *drv)
 728 {
 729         struct cx8802_dev *h;
 730         struct cx8802_driver *d;
 731         struct list_head *list;
 732         struct list_head *list2, *q;
 733         int err = 0, i = 0;
 734
 735         printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
 736                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");
 737
 738         list_for_each(list,&cx8802_devlist) {
 739                 i++;
 740                 h = list_entry(list, struct cx8802_dev, devlist);
 741
 742                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 743                         h->core->name,h->pci->subsystem_vendor,
 744                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 745                         h->core->board);
 746
 747                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
 748                         d = list_entry(list2, struct cx8802_driver, devlist);
 749
 750                         /* only unregister the correct driver type */
 751                         if (d->type_id != drv->type_id)
 752                                 continue;
 753
 754                         err = d->remove(d);
 755                         if (err == 0) {
 756                                 mutex_lock(&drv->core->lock);
 757                                 list_del(list2);
 758                                 mutex_unlock(&drv->core->lock);
 759                         } else
 760                                 printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);
 761
 762                 }
 763
 764         }
 765
 766         return err;
 767 }
 768
 769 /* ----------------------------------------------------------- */
 770 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 771                                const struct pci_device_id *pci_id)
 772 {
 773         struct cx8802_dev *dev;
 774         struct cx88_core  *core;
 775         int err;
 776
 777         /* general setup */
 778         core = cx88_core_get(pci_dev);
 779         if (NULL == core)
 780                 return -EINVAL;
 781
 782         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 783
 784         err = -ENODEV;
 785         if (!cx88_boards[core->board].mpeg)
 786                 goto fail_core;
 787
 788         err = -ENOMEM;
 789         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 790         if (NULL == dev)
 791                 goto fail_core;
 792         dev->pci = pci_dev;
 793         dev->core = core;
 794
 795         err = cx8802_init_common(dev);
 796         if (err != 0)
 797                 goto fail_free;
 798
 799         INIT_LIST_HEAD(&dev->drvlist.devlist);
 800         list_add_tail(&dev->devlist,&cx8802_devlist);
 801
 802         /* Maintain a reference so cx88-video can query the 8802 device. */
 803         core->dvbdev = dev;
 804
 805         /* now autoload cx88-dvb or cx88-blackbird */
 806         request_modules(dev);
 807         return 0;
 808
 809  fail_free:
 810         kfree(dev);
 811  fail_core:
 812         cx88_core_put(core,pci_dev);
 813         return err;
 814 }
 815
 816 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 817 {
 818         struct cx8802_dev *dev;
 819         struct cx8802_driver *h;
 820         struct list_head *list;
 821
 822         dev = pci_get_drvdata(pci_dev);
 823
 824         dprintk( 1, "%s\n", __FUNCTION__);
 825
 826         list_for_each(list,&dev->drvlist.devlist) {
 827                 h = list_entry(list, struct cx8802_driver, devlist);
 828                 dprintk( 1, " ->driver\n");
 829                 if (h->remove == NULL) {
 830                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
 831                         continue;
 832                 }
 833                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
 834                 cx8802_unregister_driver(h);
 835                 list_del(&dev->drvlist.devlist);
 836         }
 837
 838         /* Destroy any 8802 reference. */
 839         dev->core->dvbdev = NULL;
 840
 841         /* common */
 842         cx8802_fini_common(dev);
 843         cx88_core_put(dev->core,dev->pci);
 844         kfree(dev);
 845 }
 846
 847 static struct pci_device_id cx8802_pci_tbl[] = {
 848         {
 849                 .vendor       = 0x14f1,
 850                 .device       = 0x8802,
 851                 .subvendor    = PCI_ANY_ID,
 852                 .subdevice    = PCI_ANY_ID,
 853         },{
 854                 /* --- end of list --- */
 855         }
 856 };
 857 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 858
 859 static struct pci_driver cx8802_pci_driver = {
 860         .name     = "cx88-mpeg driver manager",
 861         .id_table = cx8802_pci_tbl,
 862         .probe    = cx8802_probe,
 863         .remove   = __devexit_p(cx8802_remove),
 864 };
 865
 866 static int cx8802_init(void)
 867 {
 868         printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
 869                (CX88_VERSION_CODE >> 16) & 0xff,
 870                (CX88_VERSION_CODE >>  8) & 0xff,
 871                CX88_VERSION_CODE & 0xff);
 872 #ifdef SNAPSHOT
 873         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 874                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 875 #endif
 876         return pci_register_driver(&cx8802_pci_driver);
 877 }
 878
 879 static void cx8802_fini(void)
 880 {
 881         pci_unregister_driver(&cx8802_pci_driver);
 882 }
 883
 884 module_init(cx8802_init);
 885 module_exit(cx8802_fini);
 886 EXPORT_SYMBOL(cx8802_buf_prepare);
 887 EXPORT_SYMBOL(cx8802_buf_queue);
 888 EXPORT_SYMBOL(cx8802_cancel_buffers);
 889
 890 EXPORT_SYMBOL(cx8802_init_common);
 891 EXPORT_SYMBOL(cx8802_fini_common);
 892
 893 EXPORT_SYMBOL(cx8802_register_driver);
 894 EXPORT_SYMBOL(cx8802_unregister_driver);
 895 EXPORT_SYMBOL(cx8802_get_device);
 896 EXPORT_SYMBOL(cx8802_get_driver);
 897 /* ----------------------------------------------------------- */
 898 /*
 899  * Local variables:
 900  * c-basic-offset: 8
 901  * End:
 902  * 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
 903  */