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/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 (cx88_boards[dev->core->board].mpeg & CX88_MPEG_DVB)
  58                 request_module("cx88-dvb");
  59         if (cx88_boards[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", dev->width, dev->height, buf->vb.field);
  83
  84         /* setup fifo + format */
  85         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
  86                                 dev->ts_packet_size, buf->risc.dma);
  87
  88         /* write TS length to chip */
  89         cx_write(MO_TS_LNGTH, buf->vb.width);
  90
  91         /* FIXME: this needs a review.
  92          * also: move to cx88-blackbird + cx88-dvb source files? */
  93
  94         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
  95
  96         if ( (core->active_type_id == CX88_MPEG_DVB) &&
  97                 (cx88_boards[core->board].mpeg & CX88_MPEG_DVB) ) {
  98
  99                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 100                 /* negedge driven & software reset */
 101                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 102                 udelay(100);
 103                 cx_write(MO_PINMUX_IO, 0x00);
 104                 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
 105                 switch (core->board) {
 106                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 107                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 108                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 109                 case CX88_BOARD_PCHDTV_HD5500:
 110                         cx_write(TS_SOP_STAT, 1<<13);
 111                         break;
 112                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 113                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 114                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 115                         udelay(100);
 116                         break;
 117                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 118                         break;
 119                 default:
 120                         cx_write(TS_SOP_STAT, 0x00);
 121                         break;
 122                 }
 123                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 124                 udelay(100);
 125         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 126                 (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) ) {
 127                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 128                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 129
 130                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 131                 udelay(100);
 132
 133                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 134                 cx_write(TS_VALERR_CNTRL, 0x2000);
 135
 136                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 137                 udelay(100);
 138         } else {
 139                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
 140                         cx88_boards[core->board].mpeg );
 141                 return -EINVAL;
 142         }
 143
 144         /* reset counter */
 145         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 146         q->count = 1;
 147
 148         /* enable irqs */
 149         dprintk( 1, "setting the interrupt mask\n" );
 150         cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
 151         cx_set(MO_TS_INTMSK,  0x1f0011);
 152
 153         /* start dma */
 154         cx_set(MO_DEV_CNTRL2, (1<<5));
 155         cx_set(MO_TS_DMACNTRL, 0x11);
 156         return 0;
 157 }
 158
 159 static int cx8802_stop_dma(struct cx8802_dev *dev)
 160 {
 161         struct cx88_core *core = dev->core;
 162         dprintk( 1, "cx8802_stop_dma\n" );
 163
 164         /* stop dma */
 165         cx_clear(MO_TS_DMACNTRL, 0x11);
 166
 167         /* disable irqs */
 168         cx_clear(MO_PCI_INTMSK, 0x000004);
 169         cx_clear(MO_TS_INTMSK, 0x1f0011);
 170
 171         /* Reset the controller */
 172         cx_write(TS_GEN_CNTRL, 0xcd);
 173         return 0;
 174 }
 175
 176 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 177                                 struct cx88_dmaqueue *q)
 178 {
 179         struct cx88_buffer *buf;
 180         struct list_head *item;
 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(item,&q->active) {
 227                 buf = list_entry(item, struct cx88_buffer, vb.queue);
 228                 buf->count = q->count++;
 229         }
 230         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 231         return 0;
 232 }
 233
 234 /* ------------------------------------------------------------------ */
 235
 236 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 237                         struct cx88_buffer *buf, enum v4l2_field field)
 238 {
 239         int size = dev->ts_packet_size * dev->ts_packet_count;
 240         int rc;
 241
 242         dprintk(1, "%s: %p\n", __FUNCTION__, buf);
 243         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 244                 return -EINVAL;
 245
 246         if (STATE_NEEDS_INIT == buf->vb.state) {
 247                 buf->vb.width  = dev->ts_packet_size;
 248                 buf->vb.height = dev->ts_packet_count;
 249                 buf->vb.size   = size;
 250                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 251
 252                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 253                         goto fail;
 254                 cx88_risc_databuffer(dev->pci, &buf->risc,
 255                                      buf->vb.dma.sglist,
 256                                      buf->vb.width, buf->vb.height);
 257         }
 258         buf->vb.state = STATE_PREPARED;
 259         return 0;
 260
 261  fail:
 262         cx88_free_buffer(q,buf);
 263         return rc;
 264 }
 265
 266 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 267 {
 268         struct cx88_buffer    *prev;
 269         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 270
 271         dprintk( 1, "cx8802_buf_queue\n" );
 272         /* add jump to stopper */
 273         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 274         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 275
 276         if (list_empty(&cx88q->active)) {
 277                 dprintk( 1, "queue is empty - first active\n" );
 278                 list_add_tail(&buf->vb.queue,&cx88q->active);
 279                 cx8802_start_dma(dev, cx88q, buf);
 280                 buf->vb.state = STATE_ACTIVE;
 281                 buf->count    = cx88q->count++;
 282                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 283                 dprintk(1,"[%p/%d] %s - first active\n",
 284                         buf, buf->vb.i, __FUNCTION__);
 285
 286         } else {
 287                 dprintk( 1, "queue is not empty - append to active\n" );
 288                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 289                 list_add_tail(&buf->vb.queue,&cx88q->active);
 290                 buf->vb.state = STATE_ACTIVE;
 291                 buf->count    = cx88q->count++;
 292                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 293                 dprintk( 1, "[%p/%d] %s - append to active\n",
 294                         buf, buf->vb.i, __FUNCTION__);
 295         }
 296 }
 297
 298 /* ----------------------------------------------------------- */
 299
 300 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
 301 {
 302         struct cx88_dmaqueue *q = &dev->mpegq;
 303         struct cx88_buffer *buf;
 304         unsigned long flags;
 305
 306         spin_lock_irqsave(&dev->slock,flags);
 307         while (!list_empty(&q->active)) {
 308                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 309                 list_del(&buf->vb.queue);
 310                 buf->vb.state = STATE_ERROR;
 311                 wake_up(&buf->vb.done);
 312                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 313                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 314         }
 315         if (restart)
 316         {
 317                 dprintk(1, "restarting queue\n" );
 318                 cx8802_restart_queue(dev,q);
 319         }
 320         spin_unlock_irqrestore(&dev->slock,flags);
 321 }
 322
 323 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 324 {
 325         struct cx88_dmaqueue *q = &dev->mpegq;
 326
 327         dprintk( 1, "cx8802_cancel_buffers" );
 328         del_timer_sync(&q->timeout);
 329         cx8802_stop_dma(dev);
 330         do_cancel_buffers(dev,"cancel",0);
 331 }
 332
 333 static void cx8802_timeout(unsigned long data)
 334 {
 335         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 336
 337         dprintk(0, "%s\n",__FUNCTION__);
 338
 339         if (debug)
 340                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 341         cx8802_stop_dma(dev);
 342         do_cancel_buffers(dev,"timeout",1);
 343 }
 344
 345 static char *cx88_mpeg_irqs[32] = {
 346         "ts_risci1", NULL, NULL, NULL,
 347         "ts_risci2", NULL, NULL, NULL,
 348         "ts_oflow",  NULL, NULL, NULL,
 349         "ts_sync",   NULL, NULL, NULL,
 350         "opc_err", "par_err", "rip_err", "pci_abort",
 351         "ts_err?",
 352 };
 353
 354 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 355 {
 356         struct cx88_core *core = dev->core;
 357         u32 status, mask, count;
 358
 359         dprintk( 1, "cx8802_mpeg_irq\n" );
 360         status = cx_read(MO_TS_INTSTAT);
 361         mask   = cx_read(MO_TS_INTMSK);
 362         if (0 == (status & mask))
 363                 return;
 364
 365         cx_write(MO_TS_INTSTAT, status);
 366
 367         if (debug || (status & mask & ~0xff))
 368                 cx88_print_irqbits(core->name, "irq mpeg ",
 369                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 370                                    status, mask);
 371
 372         /* risc op code error */
 373         if (status & (1 << 16)) {
 374                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 375                 cx_clear(MO_TS_DMACNTRL, 0x11);
 376                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 377         }
 378
 379         /* risc1 y */
 380         if (status & 0x01) {
 381                 dprintk( 1, "wake up\n" );
 382                 spin_lock(&dev->slock);
 383                 count = cx_read(MO_TS_GPCNT);
 384                 cx88_wakeup(dev->core, &dev->mpegq, count);
 385                 spin_unlock(&dev->slock);
 386         }
 387
 388         /* risc2 y */
 389         if (status & 0x10) {
 390                 spin_lock(&dev->slock);
 391                 cx8802_restart_queue(dev,&dev->mpegq);
 392                 spin_unlock(&dev->slock);
 393         }
 394
 395         /* other general errors */
 396         if (status & 0x1f0100) {
 397                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 398                 spin_lock(&dev->slock);
 399                 cx8802_stop_dma(dev);
 400                 cx8802_restart_queue(dev,&dev->mpegq);
 401                 spin_unlock(&dev->slock);
 402         }
 403 }
 404
 405 #define MAX_IRQ_LOOP 10
 406
 407 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 408 {
 409         struct cx8802_dev *dev = dev_id;
 410         struct cx88_core *core = dev->core;
 411         u32 status;
 412         int loop, handled = 0;
 413
 414         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 415                 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
 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 & 0x04)
 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 struct cx8802_dev * cx8802_get_device(struct inode *inode)
 574 {
 575         int minor = iminor(inode);
 576         struct cx8802_dev *h = NULL;
 577         struct list_head *list;
 578
 579         list_for_each(list,&cx8802_devlist) {
 580                 h = list_entry(list, struct cx8802_dev, devlist);
 581                 if (h->mpeg_dev->minor == minor)
 582                         return h;
 583         }
 584
 585         return NULL;
 586 }
 587
 588 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 589 {
 590         struct cx8802_dev *h = NULL;
 591         struct cx8802_driver *d = NULL;
 592         struct list_head *list;
 593         struct list_head *list2;
 594
 595         list_for_each(list,&cx8802_devlist) {
 596                 h = list_entry(list, struct cx8802_dev, devlist);
 597                 if (h != dev)
 598                         continue;
 599
 600                 list_for_each(list2, &h->drvlist.devlist) {
 601                         d = list_entry(list2, struct cx8802_driver, devlist);
 602
 603                         /* only unregister the correct driver type */
 604                         if (d->type_id == btype) {
 605                                 return d;
 606                         }
 607                 }
 608         }
 609
 610         return NULL;
 611 }
 612
 613 /* Driver asked for hardware access. */
 614 int cx8802_request_acquire(struct cx8802_driver *drv)
 615 {
 616         struct cx88_core *core = drv->core;
 617
 618         /* Fail a request for hardware if the device is busy. */
 619         if (core->active_type_id != CX88_BOARD_NONE)
 620                 return -EBUSY;
 621
 622         if (drv->advise_acquire)
 623         {
 624                 core->active_type_id = drv->type_id;
 625                 drv->advise_acquire(drv);
 626
 627                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 628         }
 629
 630         return 0;
 631 }
 632
 633 /* Driver asked to release hardware. */
 634 int cx8802_request_release(struct cx8802_driver *drv)
 635 {
 636         struct cx88_core *core = drv->core;
 637
 638         if (drv->advise_release)
 639         {
 640                 drv->advise_release(drv);
 641                 core->active_type_id = CX88_BOARD_NONE;
 642                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
 643         }
 644
 645         return 0;
 646 }
 647
 648 static int cx8802_check_driver(struct cx8802_driver *drv)
 649 {
 650         if (drv == NULL)
 651                 return -ENODEV;
 652
 653         if ((drv->type_id != CX88_MPEG_DVB) &&
 654                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 655                 return -EINVAL;
 656
 657         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 658                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 659                 return -EINVAL;
 660
 661         if ((drv->probe == NULL) ||
 662                 (drv->remove == NULL) ||
 663                 (drv->advise_acquire == NULL) ||
 664                 (drv->advise_release == NULL))
 665                 return -EINVAL;
 666
 667         return 0;
 668 }
 669
 670 int cx8802_register_driver(struct cx8802_driver *drv)
 671 {
 672         struct cx8802_dev *h;
 673         struct cx8802_driver *driver;
 674         struct list_head *list;
 675         int err = 0, i = 0;
 676
 677         printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
 678                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 679                 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 680
 681         if ((err = cx8802_check_driver(drv)) != 0) {
 682                 printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
 683                 return err;
 684         }
 685
 686         list_for_each(list,&cx8802_devlist) {
 687                 h = list_entry(list, struct cx8802_dev, devlist);
 688
 689                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 690                         h->core->name,h->pci->subsystem_vendor,
 691                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 692                         h->core->board);
 693
 694                 /* Bring up a new struct for each driver instance */
 695                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 696                 if (driver == NULL)
 697                         return -ENOMEM;
 698
 699                 /* Snapshot of the driver registration data */
 700                 drv->core = h->core;
 701                 drv->suspend = cx8802_suspend_common;
 702                 drv->resume = cx8802_resume_common;
 703                 drv->request_acquire = cx8802_request_acquire;
 704                 drv->request_release = cx8802_request_release;
 705                 memcpy(driver, drv, sizeof(*driver));
 706
 707                 err = drv->probe(driver);
 708                 if (err == 0) {
 709                         i++;
 710                         mutex_lock(&drv->core->lock);
 711                         list_add_tail(&driver->devlist,&h->drvlist.devlist);
 712                         mutex_unlock(&drv->core->lock);
 713                 } else {
 714                         printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
 715                 }
 716
 717         }
 718         if (i == 0)
 719                 err = -ENODEV;
 720         else
 721                 err = 0;
 722
 723         return err;
 724 }
 725
 726 int cx8802_unregister_driver(struct cx8802_driver *drv)
 727 {
 728         struct cx8802_dev *h;
 729         struct cx8802_driver *d;
 730         struct list_head *list;
 731         struct list_head *list2, *q;
 732         int err = 0, i = 0;
 733
 734         printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
 735                 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");
 736
 737         list_for_each(list,&cx8802_devlist) {
 738                 i++;
 739                 h = list_entry(list, struct cx8802_dev, devlist);
 740
 741                 printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
 742                         h->core->name,h->pci->subsystem_vendor,
 743                         h->pci->subsystem_device,cx88_boards[h->core->board].name,
 744                         h->core->board);
 745
 746                 list_for_each_safe(list2, q, &h->drvlist.devlist) {
 747                         d = list_entry(list2, struct cx8802_driver, devlist);
 748
 749                         /* only unregister the correct driver type */
 750                         if (d->type_id != drv->type_id)
 751                                 continue;
 752
 753                         err = d->remove(d);
 754                         if (err == 0) {
 755                                 mutex_lock(&drv->core->lock);
 756                                 list_del(list2);
 757                                 mutex_unlock(&drv->core->lock);
 758                         } else
 759                                 printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);
 760
 761                 }
 762
 763         }
 764
 765         return err;
 766 }
 767
 768 /* ----------------------------------------------------------- */
 769 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
 770                                const struct pci_device_id *pci_id)
 771 {
 772         struct cx8802_dev *dev;
 773         struct cx88_core  *core;
 774         int err;
 775
 776         /* general setup */
 777         core = cx88_core_get(pci_dev);
 778         if (NULL == core)
 779                 return -EINVAL;
 780
 781         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 782
 783         err = -ENODEV;
 784         if (!cx88_boards[core->board].mpeg)
 785                 goto fail_core;
 786
 787         err = -ENOMEM;
 788         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 789         if (NULL == dev)
 790                 goto fail_core;
 791         dev->pci = pci_dev;
 792         dev->core = core;
 793
 794         err = cx8802_init_common(dev);
 795         if (err != 0)
 796                 goto fail_free;
 797
 798         INIT_LIST_HEAD(&dev->drvlist.devlist);
 799         list_add_tail(&dev->devlist,&cx8802_devlist);
 800
 801         /* Maintain a reference so cx88-video can query the 8802 device. */
 802         core->dvbdev = dev;
 803
 804         /* now autoload cx88-dvb or cx88-blackbird */
 805         request_modules(dev);
 806         return 0;
 807
 808  fail_free:
 809         kfree(dev);
 810  fail_core:
 811         cx88_core_put(core,pci_dev);
 812         return err;
 813 }
 814
 815 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
 816 {
 817         struct cx8802_dev *dev;
 818         struct cx8802_driver *h;
 819         struct list_head *list;
 820
 821         dev = pci_get_drvdata(pci_dev);
 822
 823         dprintk( 1, "%s\n", __FUNCTION__);
 824
 825         list_for_each(list,&dev->drvlist.devlist) {
 826                 h = list_entry(list, struct cx8802_driver, devlist);
 827                 dprintk( 1, " ->driver\n");
 828                 if (h->remove == NULL) {
 829                         printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
 830                         continue;
 831                 }
 832                 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
 833                 cx8802_unregister_driver(h);
 834                 list_del(&dev->drvlist.devlist);
 835         }
 836
 837         /* Destroy any 8802 reference. */
 838         dev->core->dvbdev = NULL;
 839
 840         /* common */
 841         cx8802_fini_common(dev);
 842         cx88_core_put(dev->core,dev->pci);
 843         kfree(dev);
 844 }
 845
 846 static struct pci_device_id cx8802_pci_tbl[] = {
 847         {
 848                 .vendor       = 0x14f1,
 849                 .device       = 0x8802,
 850                 .subvendor    = PCI_ANY_ID,
 851                 .subdevice    = PCI_ANY_ID,
 852         },{
 853                 /* --- end of list --- */
 854         }
 855 };
 856 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 857
 858 static struct pci_driver cx8802_pci_driver = {
 859         .name     = "cx88-mpeg driver manager",
 860         .id_table = cx8802_pci_tbl,
 861         .probe    = cx8802_probe,
 862         .remove   = __devexit_p(cx8802_remove),
 863 };
 864
 865 static int cx8802_init(void)
 866 {
 867         printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
 868                (CX88_VERSION_CODE >> 16) & 0xff,
 869                (CX88_VERSION_CODE >>  8) & 0xff,
 870                CX88_VERSION_CODE & 0xff);
 871 #ifdef SNAPSHOT
 872         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 873                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 874 #endif
 875         return pci_register_driver(&cx8802_pci_driver);
 876 }
 877
 878 static void cx8802_fini(void)
 879 {
 880         pci_unregister_driver(&cx8802_pci_driver);
 881 }
 882
 883 module_init(cx8802_init);
 884 module_exit(cx8802_fini);
 885 EXPORT_SYMBOL(cx8802_buf_prepare);
 886 EXPORT_SYMBOL(cx8802_buf_queue);
 887 EXPORT_SYMBOL(cx8802_cancel_buffers);
 888
 889 EXPORT_SYMBOL(cx8802_init_common);
 890 EXPORT_SYMBOL(cx8802_fini_common);
 891
 892 EXPORT_SYMBOL(cx8802_register_driver);
 893 EXPORT_SYMBOL(cx8802_unregister_driver);
 894 EXPORT_SYMBOL(cx8802_get_device);
 895 EXPORT_SYMBOL(cx8802_get_driver);
 896 /* ----------------------------------------------------------- */
 897 /*
 898  * Local variables:
 899  * c-basic-offset: 8
 900  * End:
 901  * 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
 902  */