drivers/media/pci/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.us>
   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/slab.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.us>");
  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 MODULE_VERSION(CX88_VERSION);
  43
  44 static unsigned int debug;
  45 module_param(debug,int,0644);
  46 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
  47
  48 #define dprintk(level, fmt, arg...) do {                                       \
  49         if (debug + 1 > level)                                                 \
  50                 printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg); \
  51 } while(0)
  52
  53 #define mpeg_dbg(level, fmt, arg...) do {                                 \
  54         if (debug + 1 > level)                                            \
  55                 printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg); \
  56 } while(0)
  57
  58 #if defined(CONFIG_MODULES) && defined(MODULE)
  59 static void request_module_async(struct work_struct *work)
  60 {
  61         struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
  62
  63         if (dev->core->board.mpeg & CX88_MPEG_DVB)
  64                 request_module("cx88-dvb");
  65         if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
  66                 request_module("cx88-blackbird");
  67 }
  68
  69 static void request_modules(struct cx8802_dev *dev)
  70 {
  71         INIT_WORK(&dev->request_module_wk, request_module_async);
  72         schedule_work(&dev->request_module_wk);
  73 }
  74
  75 static void flush_request_modules(struct cx8802_dev *dev)
  76 {
  77         flush_work(&dev->request_module_wk);
  78 }
  79 #else
  80 #define request_modules(dev)
  81 #define flush_request_modules(dev)
  82 #endif /* CONFIG_MODULES */
  83
  84
  85 static LIST_HEAD(cx8802_devlist);
  86 static DEFINE_MUTEX(cx8802_mutex);
  87 /* ------------------------------------------------------------------ */
  88
  89 static int cx8802_start_dma(struct cx8802_dev    *dev,
  90                             struct cx88_dmaqueue *q,
  91                             struct cx88_buffer   *buf)
  92 {
  93         struct cx88_core *core = dev->core;
  94
  95         dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n",
  96                 buf->vb.width, buf->vb.height, buf->vb.field);
  97
  98         /* setup fifo + format */
  99         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
 100                                 dev->ts_packet_size, buf->risc.dma);
 101
 102         /* write TS length to chip */
 103         cx_write(MO_TS_LNGTH, buf->vb.width);
 104
 105         /* FIXME: this needs a review.
 106          * also: move to cx88-blackbird + cx88-dvb source files? */
 107
 108         dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
 109
 110         if ( (core->active_type_id == CX88_MPEG_DVB) &&
 111                 (core->board.mpeg & CX88_MPEG_DVB) ) {
 112
 113                 dprintk( 1, "cx8802_start_dma doing .dvb\n");
 114                 /* negedge driven & software reset */
 115                 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
 116                 udelay(100);
 117                 cx_write(MO_PINMUX_IO, 0x00);
 118                 cx_write(TS_HW_SOP_CNTRL, 0x47<<16|188<<4|0x01);
 119                 switch (core->boardnr) {
 120                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
 121                 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
 122                 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
 123                 case CX88_BOARD_PCHDTV_HD5500:
 124                         cx_write(TS_SOP_STAT, 1<<13);
 125                         break;
 126                 case CX88_BOARD_SAMSUNG_SMT_7020:
 127                         cx_write(TS_SOP_STAT, 0x00);
 128                         break;
 129                 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 130                 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 131                         cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
 132                         udelay(100);
 133                         break;
 134                 case CX88_BOARD_HAUPPAUGE_HVR1300:
 135                         /* Enable MPEG parallel IO and video signal pins */
 136                         cx_write(MO_PINMUX_IO, 0x88);
 137                         cx_write(TS_SOP_STAT, 0);
 138                         cx_write(TS_VALERR_CNTRL, 0);
 139                         break;
 140                 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 141                         /* Enable MPEG parallel IO and video signal pins */
 142                         cx_write(MO_PINMUX_IO, 0x88);
 143                         cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
 144                         dev->ts_gen_cntrl = 5;
 145                         cx_write(TS_SOP_STAT, 0);
 146                         cx_write(TS_VALERR_CNTRL, 0);
 147                         udelay(100);
 148                         break;
 149                 default:
 150                         cx_write(TS_SOP_STAT, 0x00);
 151                         break;
 152                 }
 153                 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
 154                 udelay(100);
 155         } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
 156                 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
 157                 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
 158                 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
 159
 160                 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
 161                 udelay(100);
 162
 163                 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
 164                 cx_write(TS_VALERR_CNTRL, 0x2000);
 165
 166                 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
 167                 udelay(100);
 168         } else {
 169                 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __func__,
 170                         core->board.mpeg );
 171                 return -EINVAL;
 172         }
 173
 174         /* reset counter */
 175         cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
 176         q->count = 1;
 177
 178         /* enable irqs */
 179         dprintk( 1, "setting the interrupt mask\n" );
 180         cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
 181         cx_set(MO_TS_INTMSK,  0x1f0011);
 182
 183         /* start dma */
 184         cx_set(MO_DEV_CNTRL2, (1<<5));
 185         cx_set(MO_TS_DMACNTRL, 0x11);
 186         return 0;
 187 }
 188
 189 static int cx8802_stop_dma(struct cx8802_dev *dev)
 190 {
 191         struct cx88_core *core = dev->core;
 192         dprintk( 1, "cx8802_stop_dma\n" );
 193
 194         /* stop dma */
 195         cx_clear(MO_TS_DMACNTRL, 0x11);
 196
 197         /* disable irqs */
 198         cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
 199         cx_clear(MO_TS_INTMSK, 0x1f0011);
 200
 201         /* Reset the controller */
 202         cx_write(TS_GEN_CNTRL, 0xcd);
 203         return 0;
 204 }
 205
 206 static int cx8802_restart_queue(struct cx8802_dev    *dev,
 207                                 struct cx88_dmaqueue *q)
 208 {
 209         struct cx88_buffer *buf;
 210
 211         dprintk( 1, "cx8802_restart_queue\n" );
 212         if (list_empty(&q->active))
 213         {
 214                 struct cx88_buffer *prev;
 215                 prev = NULL;
 216
 217                 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
 218
 219                 for (;;) {
 220                         if (list_empty(&q->queued))
 221                                 return 0;
 222                         buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
 223                         if (NULL == prev) {
 224                                 list_move_tail(&buf->vb.queue, &q->active);
 225                                 cx8802_start_dma(dev, q, buf);
 226                                 buf->vb.state = VIDEOBUF_ACTIVE;
 227                                 buf->count    = q->count++;
 228                                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 229                                 dprintk(1,"[%p/%d] restart_queue - first active\n",
 230                                         buf,buf->vb.i);
 231
 232                         } else if (prev->vb.width  == buf->vb.width  &&
 233                                    prev->vb.height == buf->vb.height &&
 234                                    prev->fmt       == buf->fmt) {
 235                                 list_move_tail(&buf->vb.queue, &q->active);
 236                                 buf->vb.state = VIDEOBUF_ACTIVE;
 237                                 buf->count    = q->count++;
 238                                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 239                                 dprintk(1,"[%p/%d] restart_queue - move to active\n",
 240                                         buf,buf->vb.i);
 241                         } else {
 242                                 return 0;
 243                         }
 244                         prev = buf;
 245                 }
 246                 return 0;
 247         }
 248
 249         buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 250         dprintk(2,"restart_queue [%p/%d]: restart dma\n",
 251                 buf, buf->vb.i);
 252         cx8802_start_dma(dev, q, buf);
 253         list_for_each_entry(buf, &q->active, vb.queue)
 254                 buf->count = q->count++;
 255         mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 256         return 0;
 257 }
 258
 259 /* ------------------------------------------------------------------ */
 260
 261 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
 262                         struct cx88_buffer *buf, enum v4l2_field field)
 263 {
 264         int size = dev->ts_packet_size * dev->ts_packet_count;
 265         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
 266         int rc;
 267
 268         dprintk(1, "%s: %p\n", __func__, buf);
 269         if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
 270                 return -EINVAL;
 271
 272         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 273                 buf->vb.width  = dev->ts_packet_size;
 274                 buf->vb.height = dev->ts_packet_count;
 275                 buf->vb.size   = size;
 276                 buf->vb.field  = field /*V4L2_FIELD_TOP*/;
 277
 278                 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
 279                         goto fail;
 280                 cx88_risc_databuffer(dev->pci, &buf->risc,
 281                                      dma->sglist,
 282                                      buf->vb.width, buf->vb.height, 0);
 283         }
 284         buf->vb.state = VIDEOBUF_PREPARED;
 285         return 0;
 286
 287  fail:
 288         cx88_free_buffer(q,buf);
 289         return rc;
 290 }
 291
 292 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
 293 {
 294         struct cx88_buffer    *prev;
 295         struct cx88_dmaqueue  *cx88q = &dev->mpegq;
 296
 297         dprintk( 1, "cx8802_buf_queue\n" );
 298         /* add jump to stopper */
 299         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 300         buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
 301
 302         if (list_empty(&cx88q->active)) {
 303                 dprintk( 1, "queue is empty - first active\n" );
 304                 list_add_tail(&buf->vb.queue,&cx88q->active);
 305                 cx8802_start_dma(dev, cx88q, buf);
 306                 buf->vb.state = VIDEOBUF_ACTIVE;
 307                 buf->count    = cx88q->count++;
 308                 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
 309                 dprintk(1,"[%p/%d] %s - first active\n",
 310                         buf, buf->vb.i, __func__);
 311
 312         } else {
 313                 dprintk( 1, "queue is not empty - append to active\n" );
 314                 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
 315                 list_add_tail(&buf->vb.queue,&cx88q->active);
 316                 buf->vb.state = VIDEOBUF_ACTIVE;
 317                 buf->count    = cx88q->count++;
 318                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 319                 dprintk( 1, "[%p/%d] %s - append to active\n",
 320                         buf, buf->vb.i, __func__);
 321         }
 322 }
 323
 324 /* ----------------------------------------------------------- */
 325
 326 static void do_cancel_buffers(struct cx8802_dev *dev, const char *reason, int restart)
 327 {
 328         struct cx88_dmaqueue *q = &dev->mpegq;
 329         struct cx88_buffer *buf;
 330         unsigned long flags;
 331
 332         spin_lock_irqsave(&dev->slock,flags);
 333         while (!list_empty(&q->active)) {
 334                 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
 335                 list_del(&buf->vb.queue);
 336                 buf->vb.state = VIDEOBUF_ERROR;
 337                 wake_up(&buf->vb.done);
 338                 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
 339                         buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
 340         }
 341         if (restart)
 342         {
 343                 dprintk(1, "restarting queue\n" );
 344                 cx8802_restart_queue(dev,q);
 345         }
 346         spin_unlock_irqrestore(&dev->slock,flags);
 347 }
 348
 349 void cx8802_cancel_buffers(struct cx8802_dev *dev)
 350 {
 351         struct cx88_dmaqueue *q = &dev->mpegq;
 352
 353         dprintk( 1, "cx8802_cancel_buffers" );
 354         del_timer_sync(&q->timeout);
 355         cx8802_stop_dma(dev);
 356         do_cancel_buffers(dev,"cancel",0);
 357 }
 358
 359 static void cx8802_timeout(unsigned long data)
 360 {
 361         struct cx8802_dev *dev = (struct cx8802_dev*)data;
 362
 363         dprintk(1, "%s\n",__func__);
 364
 365         if (debug)
 366                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 367         cx8802_stop_dma(dev);
 368         do_cancel_buffers(dev,"timeout",1);
 369 }
 370
 371 static const char * cx88_mpeg_irqs[32] = {
 372         "ts_risci1", NULL, NULL, NULL,
 373         "ts_risci2", NULL, NULL, NULL,
 374         "ts_oflow",  NULL, NULL, NULL,
 375         "ts_sync",   NULL, NULL, NULL,
 376         "opc_err", "par_err", "rip_err", "pci_abort",
 377         "ts_err?",
 378 };
 379
 380 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
 381 {
 382         struct cx88_core *core = dev->core;
 383         u32 status, mask, count;
 384
 385         dprintk( 1, "cx8802_mpeg_irq\n" );
 386         status = cx_read(MO_TS_INTSTAT);
 387         mask   = cx_read(MO_TS_INTMSK);
 388         if (0 == (status & mask))
 389                 return;
 390
 391         cx_write(MO_TS_INTSTAT, status);
 392
 393         if (debug || (status & mask & ~0xff))
 394                 cx88_print_irqbits(core->name, "irq mpeg ",
 395                                    cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
 396                                    status, mask);
 397
 398         /* risc op code error */
 399         if (status & (1 << 16)) {
 400                 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
 401                 cx_clear(MO_TS_DMACNTRL, 0x11);
 402                 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
 403         }
 404
 405         /* risc1 y */
 406         if (status & 0x01) {
 407                 dprintk( 1, "wake up\n" );
 408                 spin_lock(&dev->slock);
 409                 count = cx_read(MO_TS_GPCNT);
 410                 cx88_wakeup(dev->core, &dev->mpegq, count);
 411                 spin_unlock(&dev->slock);
 412         }
 413
 414         /* risc2 y */
 415         if (status & 0x10) {
 416                 spin_lock(&dev->slock);
 417                 cx8802_restart_queue(dev,&dev->mpegq);
 418                 spin_unlock(&dev->slock);
 419         }
 420
 421         /* other general errors */
 422         if (status & 0x1f0100) {
 423                 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
 424                 spin_lock(&dev->slock);
 425                 cx8802_stop_dma(dev);
 426                 cx8802_restart_queue(dev,&dev->mpegq);
 427                 spin_unlock(&dev->slock);
 428         }
 429 }
 430
 431 #define MAX_IRQ_LOOP 10
 432
 433 static irqreturn_t cx8802_irq(int irq, void *dev_id)
 434 {
 435         struct cx8802_dev *dev = dev_id;
 436         struct cx88_core *core = dev->core;
 437         u32 status;
 438         int loop, handled = 0;
 439
 440         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 441                 status = cx_read(MO_PCI_INTSTAT) &
 442                         (core->pci_irqmask | PCI_INT_TSINT);
 443                 if (0 == status)
 444                         goto out;
 445                 dprintk( 1, "cx8802_irq\n" );
 446                 dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 447                 dprintk( 1, "    status: %d\n", status );
 448                 handled = 1;
 449                 cx_write(MO_PCI_INTSTAT, status);
 450
 451                 if (status & core->pci_irqmask)
 452                         cx88_core_irq(core,status);
 453                 if (status & PCI_INT_TSINT)
 454                         cx8802_mpeg_irq(dev);
 455         }
 456         if (MAX_IRQ_LOOP == loop) {
 457                 dprintk( 0, "clearing mask\n" );
 458                 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
 459                        core->name);
 460                 cx_write(MO_PCI_INTMSK,0);
 461         }
 462
 463  out:
 464         return IRQ_RETVAL(handled);
 465 }
 466
 467 static int cx8802_init_common(struct cx8802_dev *dev)
 468 {
 469         struct cx88_core *core = dev->core;
 470         int err;
 471
 472         /* pci init */
 473         if (pci_enable_device(dev->pci))
 474                 return -EIO;
 475         pci_set_master(dev->pci);
 476         if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) {
 477                 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
 478                 return -EIO;
 479         }
 480
 481         dev->pci_rev = dev->pci->revision;
 482         pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
 483         printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
 484                "latency: %d, mmio: 0x%llx\n", dev->core->name,
 485                pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
 486                dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
 487
 488         /* initialize driver struct */
 489         spin_lock_init(&dev->slock);
 490
 491         /* init dma queue */
 492         INIT_LIST_HEAD(&dev->mpegq.active);
 493         INIT_LIST_HEAD(&dev->mpegq.queued);
 494         dev->mpegq.timeout.function = cx8802_timeout;
 495         dev->mpegq.timeout.data     = (unsigned long)dev;
 496         init_timer(&dev->mpegq.timeout);
 497         cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
 498                           MO_TS_DMACNTRL,0x11,0x00);
 499
 500         /* get irq */
 501         err = request_irq(dev->pci->irq, cx8802_irq,
 502                           IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
 503         if (err < 0) {
 504                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 505                        dev->core->name, dev->pci->irq);
 506                 return err;
 507         }
 508         cx_set(MO_PCI_INTMSK, core->pci_irqmask);
 509
 510         /* everything worked */
 511         pci_set_drvdata(dev->pci,dev);
 512         return 0;
 513 }
 514
 515 static void cx8802_fini_common(struct cx8802_dev *dev)
 516 {
 517         dprintk( 2, "cx8802_fini_common\n" );
 518         cx8802_stop_dma(dev);
 519         pci_disable_device(dev->pci);
 520
 521         /* unregister stuff */
 522         free_irq(dev->pci->irq, dev);
 523         pci_set_drvdata(dev->pci, NULL);
 524
 525         /* free memory */
 526         btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
 527 }
 528
 529 /* ----------------------------------------------------------- */
 530
 531 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
 532 {
 533         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 534         struct cx88_core *core = dev->core;
 535         unsigned long flags;
 536
 537         /* stop mpeg dma */
 538         spin_lock_irqsave(&dev->slock, flags);
 539         if (!list_empty(&dev->mpegq.active)) {
 540                 dprintk( 2, "suspend\n" );
 541                 printk("%s: suspend mpeg\n", core->name);
 542                 cx8802_stop_dma(dev);
 543                 del_timer(&dev->mpegq.timeout);
 544         }
 545         spin_unlock_irqrestore(&dev->slock, flags);
 546
 547         /* FIXME -- shutdown device */
 548         cx88_shutdown(dev->core);
 549
 550         pci_save_state(pci_dev);
 551         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
 552                 pci_disable_device(pci_dev);
 553                 dev->state.disabled = 1;
 554         }
 555         return 0;
 556 }
 557
 558 static int cx8802_resume_common(struct pci_dev *pci_dev)
 559 {
 560         struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
 561         struct cx88_core *core = dev->core;
 562         unsigned long flags;
 563         int err;
 564
 565         if (dev->state.disabled) {
 566                 err=pci_enable_device(pci_dev);
 567                 if (err) {
 568                         printk(KERN_ERR "%s: can't enable device\n",
 569                                                dev->core->name);
 570                         return err;
 571                 }
 572                 dev->state.disabled = 0;
 573         }
 574         err=pci_set_power_state(pci_dev, PCI_D0);
 575         if (err) {
 576                 printk(KERN_ERR "%s: can't enable device\n",
 577                                                dev->core->name);
 578                 pci_disable_device(pci_dev);
 579                 dev->state.disabled = 1;
 580
 581                 return err;
 582         }
 583         pci_restore_state(pci_dev);
 584
 585         /* FIXME: re-initialize hardware */
 586         cx88_reset(dev->core);
 587
 588         /* restart video+vbi capture */
 589         spin_lock_irqsave(&dev->slock, flags);
 590         if (!list_empty(&dev->mpegq.active)) {
 591                 printk("%s: resume mpeg\n", core->name);
 592                 cx8802_restart_queue(dev,&dev->mpegq);
 593         }
 594         spin_unlock_irqrestore(&dev->slock, flags);
 595
 596         return 0;
 597 }
 598
 599 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
 600 {
 601         struct cx8802_driver *d;
 602
 603         list_for_each_entry(d, &dev->drvlist, drvlist)
 604                 if (d->type_id == btype)
 605                         return d;
 606
 607         return NULL;
 608 }
 609
 610 /* Driver asked for hardware access. */
 611 static int cx8802_request_acquire(struct cx8802_driver *drv)
 612 {
 613         struct cx88_core *core = drv->core;
 614         unsigned int    i;
 615
 616         /* Fail a request for hardware if the device is busy. */
 617         if (core->active_type_id != CX88_BOARD_NONE &&
 618             core->active_type_id != drv->type_id)
 619                 return -EBUSY;
 620
 621         if (drv->type_id == CX88_MPEG_DVB) {
 622                 /* When switching to DVB, always set the input to the tuner */
 623                 core->last_analog_input = core->input;
 624                 core->input = 0;
 625                 for (i = 0;
 626                      i < (sizeof(core->board.input) / sizeof(struct cx88_input));
 627                      i++) {
 628                         if (core->board.input[i].type == CX88_VMUX_DVB) {
 629                                 core->input = i;
 630                                 break;
 631                         }
 632                 }
 633         }
 634
 635         if (drv->advise_acquire)
 636         {
 637                 core->active_ref++;
 638                 if (core->active_type_id == CX88_BOARD_NONE) {
 639                         core->active_type_id = drv->type_id;
 640                         drv->advise_acquire(drv);
 641                 }
 642
 643                 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 644         }
 645
 646         return 0;
 647 }
 648
 649 /* Driver asked to release hardware. */
 650 static int cx8802_request_release(struct cx8802_driver *drv)
 651 {
 652         struct cx88_core *core = drv->core;
 653
 654         if (drv->advise_release && --core->active_ref == 0)
 655         {
 656                 if (drv->type_id == CX88_MPEG_DVB) {
 657                         /* If the DVB driver is releasing, reset the input
 658                            state to the last configured analog input */
 659                         core->input = core->last_analog_input;
 660                 }
 661
 662                 drv->advise_release(drv);
 663                 core->active_type_id = CX88_BOARD_NONE;
 664                 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO));
 665         }
 666
 667         return 0;
 668 }
 669
 670 static int cx8802_check_driver(struct cx8802_driver *drv)
 671 {
 672         if (drv == NULL)
 673                 return -ENODEV;
 674
 675         if ((drv->type_id != CX88_MPEG_DVB) &&
 676                 (drv->type_id != CX88_MPEG_BLACKBIRD))
 677                 return -EINVAL;
 678
 679         if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
 680                 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
 681                 return -EINVAL;
 682
 683         if ((drv->probe == NULL) ||
 684                 (drv->remove == NULL) ||
 685                 (drv->advise_acquire == NULL) ||
 686                 (drv->advise_release == NULL))
 687                 return -EINVAL;
 688
 689         return 0;
 690 }
 691
 692 int cx8802_register_driver(struct cx8802_driver *drv)
 693 {
 694         struct cx8802_dev *dev;
 695         struct cx8802_driver *driver;
 696         int err, i = 0;
 697
 698         printk(KERN_INFO
 699                "cx88/2: registering cx8802 driver, type: %s access: %s\n",
 700                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 701                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 702
 703         if ((err = cx8802_check_driver(drv)) != 0) {
 704                 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
 705                 return err;
 706         }
 707
 708         mutex_lock(&cx8802_mutex);
 709
 710         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 711                 printk(KERN_INFO
 712                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 713                        dev->core->name, dev->pci->subsystem_vendor,
 714                        dev->pci->subsystem_device, dev->core->board.name,
 715                        dev->core->boardnr);
 716
 717                 /* Bring up a new struct for each driver instance */
 718                 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
 719                 if (driver == NULL) {
 720                         err = -ENOMEM;
 721                         goto out;
 722                 }
 723
 724                 /* Snapshot of the driver registration data */
 725                 drv->core = dev->core;
 726                 drv->suspend = cx8802_suspend_common;
 727                 drv->resume = cx8802_resume_common;
 728                 drv->request_acquire = cx8802_request_acquire;
 729                 drv->request_release = cx8802_request_release;
 730                 memcpy(driver, drv, sizeof(*driver));
 731
 732                 mutex_lock(&drv->core->lock);
 733                 err = drv->probe(driver);
 734                 if (err == 0) {
 735                         i++;
 736                         list_add_tail(&driver->drvlist, &dev->drvlist);
 737                 } else {
 738                         printk(KERN_ERR
 739                                "%s/2: cx8802 probe failed, err = %d\n",
 740                                dev->core->name, err);
 741                 }
 742                 mutex_unlock(&drv->core->lock);
 743         }
 744
 745         err = i ? 0 : -ENODEV;
 746 out:
 747         mutex_unlock(&cx8802_mutex);
 748         return err;
 749 }
 750
 751 int cx8802_unregister_driver(struct cx8802_driver *drv)
 752 {
 753         struct cx8802_dev *dev;
 754         struct cx8802_driver *d, *dtmp;
 755         int err = 0;
 756
 757         printk(KERN_INFO
 758                "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
 759                drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
 760                drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
 761
 762         mutex_lock(&cx8802_mutex);
 763
 764         list_for_each_entry(dev, &cx8802_devlist, devlist) {
 765                 printk(KERN_INFO
 766                        "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
 767                        dev->core->name, dev->pci->subsystem_vendor,
 768                        dev->pci->subsystem_device, dev->core->board.name,
 769                        dev->core->boardnr);
 770
 771                 mutex_lock(&dev->core->lock);
 772
 773                 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
 774                         /* only unregister the correct driver type */
 775                         if (d->type_id != drv->type_id)
 776                                 continue;
 777
 778                         err = d->remove(d);
 779                         if (err == 0) {
 780                                 list_del(&d->drvlist);
 781                                 kfree(d);
 782                         } else
 783                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 784                                        "failed (%d)\n", dev->core->name, err);
 785                 }
 786
 787                 mutex_unlock(&dev->core->lock);
 788         }
 789
 790         mutex_unlock(&cx8802_mutex);
 791
 792         return err;
 793 }
 794
 795 /* ----------------------------------------------------------- */
 796 static int cx8802_probe(struct pci_dev *pci_dev,
 797                         const struct pci_device_id *pci_id)
 798 {
 799         struct cx8802_dev *dev;
 800         struct cx88_core  *core;
 801         int err;
 802
 803         /* general setup */
 804         core = cx88_core_get(pci_dev);
 805         if (NULL == core)
 806                 return -EINVAL;
 807
 808         printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
 809
 810         err = -ENODEV;
 811         if (!core->board.mpeg)
 812                 goto fail_core;
 813
 814         err = -ENOMEM;
 815         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 816         if (NULL == dev)
 817                 goto fail_core;
 818         dev->pci = pci_dev;
 819         dev->core = core;
 820
 821         /* Maintain a reference so cx88-video can query the 8802 device. */
 822         core->dvbdev = dev;
 823
 824         err = cx8802_init_common(dev);
 825         if (err != 0)
 826                 goto fail_free;
 827
 828         INIT_LIST_HEAD(&dev->drvlist);
 829         mutex_lock(&cx8802_mutex);
 830         list_add_tail(&dev->devlist,&cx8802_devlist);
 831         mutex_unlock(&cx8802_mutex);
 832
 833         /* now autoload cx88-dvb or cx88-blackbird */
 834         request_modules(dev);
 835         return 0;
 836
 837  fail_free:
 838         kfree(dev);
 839  fail_core:
 840         core->dvbdev = NULL;
 841         cx88_core_put(core,pci_dev);
 842         return err;
 843 }
 844
 845 static void cx8802_remove(struct pci_dev *pci_dev)
 846 {
 847         struct cx8802_dev *dev;
 848
 849         dev = pci_get_drvdata(pci_dev);
 850
 851         dprintk( 1, "%s\n", __func__);
 852
 853         flush_request_modules(dev);
 854
 855         mutex_lock(&dev->core->lock);
 856
 857         if (!list_empty(&dev->drvlist)) {
 858                 struct cx8802_driver *drv, *tmp;
 859                 int err;
 860
 861                 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
 862                        "while cx8802 sub-drivers still loaded?!\n",
 863                        dev->core->name);
 864
 865                 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
 866                         err = drv->remove(drv);
 867                         if (err == 0) {
 868                                 list_del(&drv->drvlist);
 869                         } else
 870                                 printk(KERN_ERR "%s/2: cx8802 driver remove "
 871                                        "failed (%d)\n", dev->core->name, err);
 872                         kfree(drv);
 873                 }
 874         }
 875
 876         mutex_unlock(&dev->core->lock);
 877
 878         /* Destroy any 8802 reference. */
 879         dev->core->dvbdev = NULL;
 880
 881         /* common */
 882         cx8802_fini_common(dev);
 883         cx88_core_put(dev->core,dev->pci);
 884         kfree(dev);
 885 }
 886
 887 static const struct pci_device_id cx8802_pci_tbl[] = {
 888         {
 889                 .vendor       = 0x14f1,
 890                 .device       = 0x8802,
 891                 .subvendor    = PCI_ANY_ID,
 892                 .subdevice    = PCI_ANY_ID,
 893         },{
 894                 /* --- end of list --- */
 895         }
 896 };
 897 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
 898
 899 static struct pci_driver cx8802_pci_driver = {
 900         .name     = "cx88-mpeg driver manager",
 901         .id_table = cx8802_pci_tbl,
 902         .probe    = cx8802_probe,
 903         .remove   = cx8802_remove,
 904 };
 905
 906 static int __init cx8802_init(void)
 907 {
 908         printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %s loaded\n",
 909                CX88_VERSION);
 910         return pci_register_driver(&cx8802_pci_driver);
 911 }
 912
 913 static void __exit cx8802_fini(void)
 914 {
 915         pci_unregister_driver(&cx8802_pci_driver);
 916 }
 917
 918 module_init(cx8802_init);
 919 module_exit(cx8802_fini);
 920 EXPORT_SYMBOL(cx8802_buf_prepare);
 921 EXPORT_SYMBOL(cx8802_buf_queue);
 922 EXPORT_SYMBOL(cx8802_cancel_buffers);
 923
 924 EXPORT_SYMBOL(cx8802_register_driver);
 925 EXPORT_SYMBOL(cx8802_unregister_driver);
 926 EXPORT_SYMBOL(cx8802_get_driver);
 927 /* ----------------------------------------------------------- */
 928 /*
 929  * Local variables:
 930  * c-basic-offset: 8
 931  * End:
 932  * 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
 933  */