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 return 0; 214 215 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue); 216 dprintk(2,"restart_queue [%p/%d]: restart dma\n", 217 buf, buf->vb.i); 218 cx8802_start_dma(dev, q, buf); 219 list_for_each_entry(buf, &q->active, vb.queue) 220 buf->count = q->count++; 221 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT); 222 return 0; 223 } 224 225 /* ------------------------------------------------------------------ */ 226 227 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev, 228 struct cx88_buffer *buf, enum v4l2_field field) 229 { 230 int size = dev->ts_packet_size * dev->ts_packet_count; 231 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); 232 int rc; 233 234 dprintk(1, "%s: %p\n", __func__, buf); 235 if (0 != buf->vb.baddr && buf->vb.bsize < size) 236 return -EINVAL; 237 238 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { 239 buf->vb.width = dev->ts_packet_size; 240 buf->vb.height = dev->ts_packet_count; 241 buf->vb.size = size; 242 buf->vb.field = field /*V4L2_FIELD_TOP*/; 243 244 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL))) 245 goto fail; 246 cx88_risc_databuffer(dev->pci, &buf->risc, 247 dma->sglist, 248 buf->vb.width, buf->vb.height, 0); 249 } 250 buf->vb.state = VIDEOBUF_PREPARED; 251 return 0; 252 253 fail: 254 cx88_free_buffer(q,buf); 255 return rc; 256 } 257 258 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf) 259 { 260 struct cx88_buffer *prev; 261 struct cx88_dmaqueue *cx88q = &dev->mpegq; 262 263 dprintk( 1, "cx8802_buf_queue\n" ); 264 /* add jump to stopper */ 265 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); 266 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma); 267 268 if (list_empty(&cx88q->active)) { 269 dprintk( 1, "queue is empty - first active\n" ); 270 list_add_tail(&buf->vb.queue,&cx88q->active); 271 cx8802_start_dma(dev, cx88q, buf); 272 buf->vb.state = VIDEOBUF_ACTIVE; 273 buf->count = cx88q->count++; 274 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT); 275 dprintk(1,"[%p/%d] %s - first active\n", 276 buf, buf->vb.i, __func__); 277 278 } else { 279 dprintk( 1, "queue is not empty - append to active\n" ); 280 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue); 281 list_add_tail(&buf->vb.queue,&cx88q->active); 282 buf->vb.state = VIDEOBUF_ACTIVE; 283 buf->count = cx88q->count++; 284 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 285 dprintk( 1, "[%p/%d] %s - append to active\n", 286 buf, buf->vb.i, __func__); 287 } 288 } 289 290 /* ----------------------------------------------------------- */ 291 292 static void do_cancel_buffers(struct cx8802_dev *dev, const char *reason, int restart) 293 { 294 struct cx88_dmaqueue *q = &dev->mpegq; 295 struct cx88_buffer *buf; 296 unsigned long flags; 297 298 spin_lock_irqsave(&dev->slock,flags); 299 while (!list_empty(&q->active)) { 300 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue); 301 list_del(&buf->vb.queue); 302 buf->vb.state = VIDEOBUF_ERROR; 303 wake_up(&buf->vb.done); 304 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n", 305 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma); 306 } 307 if (restart) 308 { 309 dprintk(1, "restarting queue\n" ); 310 cx8802_restart_queue(dev,q); 311 } 312 spin_unlock_irqrestore(&dev->slock,flags); 313 } 314 315 void cx8802_cancel_buffers(struct cx8802_dev *dev) 316 { 317 struct cx88_dmaqueue *q = &dev->mpegq; 318 319 dprintk( 1, "cx8802_cancel_buffers" ); 320 del_timer_sync(&q->timeout); 321 cx8802_stop_dma(dev); 322 do_cancel_buffers(dev,"cancel",0); 323 } 324 325 static void cx8802_timeout(unsigned long data) 326 { 327 struct cx8802_dev *dev = (struct cx8802_dev*)data; 328 329 dprintk(1, "%s\n",__func__); 330 331 if (debug) 332 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]); 333 cx8802_stop_dma(dev); 334 do_cancel_buffers(dev,"timeout",1); 335 } 336 337 static const char * cx88_mpeg_irqs[32] = { 338 "ts_risci1", NULL, NULL, NULL, 339 "ts_risci2", NULL, NULL, NULL, 340 "ts_oflow", NULL, NULL, NULL, 341 "ts_sync", NULL, NULL, NULL, 342 "opc_err", "par_err", "rip_err", "pci_abort", 343 "ts_err?", 344 }; 345 346 static void cx8802_mpeg_irq(struct cx8802_dev *dev) 347 { 348 struct cx88_core *core = dev->core; 349 u32 status, mask, count; 350 351 dprintk( 1, "cx8802_mpeg_irq\n" ); 352 status = cx_read(MO_TS_INTSTAT); 353 mask = cx_read(MO_TS_INTMSK); 354 if (0 == (status & mask)) 355 return; 356 357 cx_write(MO_TS_INTSTAT, status); 358 359 if (debug || (status & mask & ~0xff)) 360 cx88_print_irqbits(core->name, "irq mpeg ", 361 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs), 362 status, mask); 363 364 /* risc op code error */ 365 if (status & (1 << 16)) { 366 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name); 367 cx_clear(MO_TS_DMACNTRL, 0x11); 368 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]); 369 } 370 371 /* risc1 y */ 372 if (status & 0x01) { 373 dprintk( 1, "wake up\n" ); 374 spin_lock(&dev->slock); 375 count = cx_read(MO_TS_GPCNT); 376 cx88_wakeup(dev->core, &dev->mpegq, count); 377 spin_unlock(&dev->slock); 378 } 379 380 /* risc2 y */ 381 if (status & 0x10) { 382 spin_lock(&dev->slock); 383 cx8802_restart_queue(dev,&dev->mpegq); 384 spin_unlock(&dev->slock); 385 } 386 387 /* other general errors */ 388 if (status & 0x1f0100) { 389 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 ); 390 spin_lock(&dev->slock); 391 cx8802_stop_dma(dev); 392 cx8802_restart_queue(dev,&dev->mpegq); 393 spin_unlock(&dev->slock); 394 } 395 } 396 397 #define MAX_IRQ_LOOP 10 398 399 static irqreturn_t cx8802_irq(int irq, void *dev_id) 400 { 401 struct cx8802_dev *dev = dev_id; 402 struct cx88_core *core = dev->core; 403 u32 status; 404 int loop, handled = 0; 405 406 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { 407 status = cx_read(MO_PCI_INTSTAT) & 408 (core->pci_irqmask | PCI_INT_TSINT); 409 if (0 == status) 410 goto out; 411 dprintk( 1, "cx8802_irq\n" ); 412 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP ); 413 dprintk( 1, " status: %d\n", status ); 414 handled = 1; 415 cx_write(MO_PCI_INTSTAT, status); 416 417 if (status & core->pci_irqmask) 418 cx88_core_irq(core,status); 419 if (status & PCI_INT_TSINT) 420 cx8802_mpeg_irq(dev); 421 } 422 if (MAX_IRQ_LOOP == loop) { 423 dprintk( 0, "clearing mask\n" ); 424 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n", 425 core->name); 426 cx_write(MO_PCI_INTMSK,0); 427 } 428 429 out: 430 return IRQ_RETVAL(handled); 431 } 432 433 static int cx8802_init_common(struct cx8802_dev *dev) 434 { 435 struct cx88_core *core = dev->core; 436 int err; 437 438 /* pci init */ 439 if (pci_enable_device(dev->pci)) 440 return -EIO; 441 pci_set_master(dev->pci); 442 if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) { 443 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name); 444 return -EIO; 445 } 446 447 dev->pci_rev = dev->pci->revision; 448 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat); 449 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, " 450 "latency: %d, mmio: 0x%llx\n", dev->core->name, 451 pci_name(dev->pci), dev->pci_rev, dev->pci->irq, 452 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0)); 453 454 /* initialize driver struct */ 455 spin_lock_init(&dev->slock); 456 457 /* init dma queue */ 458 INIT_LIST_HEAD(&dev->mpegq.active); 459 dev->mpegq.timeout.function = cx8802_timeout; 460 dev->mpegq.timeout.data = (unsigned long)dev; 461 init_timer(&dev->mpegq.timeout); 462 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper, 463 MO_TS_DMACNTRL,0x11,0x00); 464 465 /* get irq */ 466 err = request_irq(dev->pci->irq, cx8802_irq, 467 IRQF_SHARED, dev->core->name, dev); 468 if (err < 0) { 469 printk(KERN_ERR "%s: can't get IRQ %d\n", 470 dev->core->name, dev->pci->irq); 471 return err; 472 } 473 cx_set(MO_PCI_INTMSK, core->pci_irqmask); 474 475 /* everything worked */ 476 pci_set_drvdata(dev->pci,dev); 477 return 0; 478 } 479 480 static void cx8802_fini_common(struct cx8802_dev *dev) 481 { 482 dprintk( 2, "cx8802_fini_common\n" ); 483 cx8802_stop_dma(dev); 484 pci_disable_device(dev->pci); 485 486 /* unregister stuff */ 487 free_irq(dev->pci->irq, dev); 488 489 /* free memory */ 490 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper); 491 } 492 493 /* ----------------------------------------------------------- */ 494 495 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state) 496 { 497 struct cx8802_dev *dev = pci_get_drvdata(pci_dev); 498 struct cx88_core *core = dev->core; 499 unsigned long flags; 500 501 /* stop mpeg dma */ 502 spin_lock_irqsave(&dev->slock, flags); 503 if (!list_empty(&dev->mpegq.active)) { 504 dprintk( 2, "suspend\n" ); 505 printk("%s: suspend mpeg\n", core->name); 506 cx8802_stop_dma(dev); 507 del_timer(&dev->mpegq.timeout); 508 } 509 spin_unlock_irqrestore(&dev->slock, flags); 510 511 /* FIXME -- shutdown device */ 512 cx88_shutdown(dev->core); 513 514 pci_save_state(pci_dev); 515 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) { 516 pci_disable_device(pci_dev); 517 dev->state.disabled = 1; 518 } 519 return 0; 520 } 521 522 static int cx8802_resume_common(struct pci_dev *pci_dev) 523 { 524 struct cx8802_dev *dev = pci_get_drvdata(pci_dev); 525 struct cx88_core *core = dev->core; 526 unsigned long flags; 527 int err; 528 529 if (dev->state.disabled) { 530 err=pci_enable_device(pci_dev); 531 if (err) { 532 printk(KERN_ERR "%s: can't enable device\n", 533 dev->core->name); 534 return err; 535 } 536 dev->state.disabled = 0; 537 } 538 err=pci_set_power_state(pci_dev, PCI_D0); 539 if (err) { 540 printk(KERN_ERR "%s: can't enable device\n", 541 dev->core->name); 542 pci_disable_device(pci_dev); 543 dev->state.disabled = 1; 544 545 return err; 546 } 547 pci_restore_state(pci_dev); 548 549 /* FIXME: re-initialize hardware */ 550 cx88_reset(dev->core); 551 552 /* restart video+vbi capture */ 553 spin_lock_irqsave(&dev->slock, flags); 554 if (!list_empty(&dev->mpegq.active)) { 555 printk("%s: resume mpeg\n", core->name); 556 cx8802_restart_queue(dev,&dev->mpegq); 557 } 558 spin_unlock_irqrestore(&dev->slock, flags); 559 560 return 0; 561 } 562 563 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype) 564 { 565 struct cx8802_driver *d; 566 567 list_for_each_entry(d, &dev->drvlist, drvlist) 568 if (d->type_id == btype) 569 return d; 570 571 return NULL; 572 } 573 574 /* Driver asked for hardware access. */ 575 static int cx8802_request_acquire(struct cx8802_driver *drv) 576 { 577 struct cx88_core *core = drv->core; 578 unsigned int i; 579 580 /* Fail a request for hardware if the device is busy. */ 581 if (core->active_type_id != CX88_BOARD_NONE && 582 core->active_type_id != drv->type_id) 583 return -EBUSY; 584 585 if (drv->type_id == CX88_MPEG_DVB) { 586 /* When switching to DVB, always set the input to the tuner */ 587 core->last_analog_input = core->input; 588 core->input = 0; 589 for (i = 0; 590 i < (sizeof(core->board.input) / sizeof(struct cx88_input)); 591 i++) { 592 if (core->board.input[i].type == CX88_VMUX_DVB) { 593 core->input = i; 594 break; 595 } 596 } 597 } 598 599 if (drv->advise_acquire) 600 { 601 core->active_ref++; 602 if (core->active_type_id == CX88_BOARD_NONE) { 603 core->active_type_id = drv->type_id; 604 drv->advise_acquire(drv); 605 } 606 607 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO)); 608 } 609 610 return 0; 611 } 612 613 /* Driver asked to release hardware. */ 614 static int cx8802_request_release(struct cx8802_driver *drv) 615 { 616 struct cx88_core *core = drv->core; 617 618 if (drv->advise_release && --core->active_ref == 0) 619 { 620 if (drv->type_id == CX88_MPEG_DVB) { 621 /* If the DVB driver is releasing, reset the input 622 state to the last configured analog input */ 623 core->input = core->last_analog_input; 624 } 625 626 drv->advise_release(drv); 627 core->active_type_id = CX88_BOARD_NONE; 628 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO)); 629 } 630 631 return 0; 632 } 633 634 static int cx8802_check_driver(struct cx8802_driver *drv) 635 { 636 if (drv == NULL) 637 return -ENODEV; 638 639 if ((drv->type_id != CX88_MPEG_DVB) && 640 (drv->type_id != CX88_MPEG_BLACKBIRD)) 641 return -EINVAL; 642 643 if ((drv->hw_access != CX8802_DRVCTL_SHARED) && 644 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE)) 645 return -EINVAL; 646 647 if ((drv->probe == NULL) || 648 (drv->remove == NULL) || 649 (drv->advise_acquire == NULL) || 650 (drv->advise_release == NULL)) 651 return -EINVAL; 652 653 return 0; 654 } 655 656 int cx8802_register_driver(struct cx8802_driver *drv) 657 { 658 struct cx8802_dev *dev; 659 struct cx8802_driver *driver; 660 int err, i = 0; 661 662 printk(KERN_INFO 663 "cx88/2: registering cx8802 driver, type: %s access: %s\n", 664 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", 665 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive"); 666 667 if ((err = cx8802_check_driver(drv)) != 0) { 668 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n"); 669 return err; 670 } 671 672 mutex_lock(&cx8802_mutex); 673 674 list_for_each_entry(dev, &cx8802_devlist, devlist) { 675 printk(KERN_INFO 676 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n", 677 dev->core->name, dev->pci->subsystem_vendor, 678 dev->pci->subsystem_device, dev->core->board.name, 679 dev->core->boardnr); 680 681 /* Bring up a new struct for each driver instance */ 682 driver = kzalloc(sizeof(*drv),GFP_KERNEL); 683 if (driver == NULL) { 684 err = -ENOMEM; 685 goto out; 686 } 687 688 /* Snapshot of the driver registration data */ 689 drv->core = dev->core; 690 drv->suspend = cx8802_suspend_common; 691 drv->resume = cx8802_resume_common; 692 drv->request_acquire = cx8802_request_acquire; 693 drv->request_release = cx8802_request_release; 694 memcpy(driver, drv, sizeof(*driver)); 695 696 mutex_lock(&drv->core->lock); 697 err = drv->probe(driver); 698 if (err == 0) { 699 i++; 700 list_add_tail(&driver->drvlist, &dev->drvlist); 701 } else { 702 printk(KERN_ERR 703 "%s/2: cx8802 probe failed, err = %d\n", 704 dev->core->name, err); 705 } 706 mutex_unlock(&drv->core->lock); 707 } 708 709 err = i ? 0 : -ENODEV; 710 out: 711 mutex_unlock(&cx8802_mutex); 712 return err; 713 } 714 715 int cx8802_unregister_driver(struct cx8802_driver *drv) 716 { 717 struct cx8802_dev *dev; 718 struct cx8802_driver *d, *dtmp; 719 int err = 0; 720 721 printk(KERN_INFO 722 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n", 723 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", 724 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive"); 725 726 mutex_lock(&cx8802_mutex); 727 728 list_for_each_entry(dev, &cx8802_devlist, devlist) { 729 printk(KERN_INFO 730 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n", 731 dev->core->name, dev->pci->subsystem_vendor, 732 dev->pci->subsystem_device, dev->core->board.name, 733 dev->core->boardnr); 734 735 mutex_lock(&dev->core->lock); 736 737 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) { 738 /* only unregister the correct driver type */ 739 if (d->type_id != drv->type_id) 740 continue; 741 742 err = d->remove(d); 743 if (err == 0) { 744 list_del(&d->drvlist); 745 kfree(d); 746 } else 747 printk(KERN_ERR "%s/2: cx8802 driver remove " 748 "failed (%d)\n", dev->core->name, err); 749 } 750 751 mutex_unlock(&dev->core->lock); 752 } 753 754 mutex_unlock(&cx8802_mutex); 755 756 return err; 757 } 758 759 /* ----------------------------------------------------------- */ 760 static int cx8802_probe(struct pci_dev *pci_dev, 761 const struct pci_device_id *pci_id) 762 { 763 struct cx8802_dev *dev; 764 struct cx88_core *core; 765 int err; 766 767 /* general setup */ 768 core = cx88_core_get(pci_dev); 769 if (NULL == core) 770 return -EINVAL; 771 772 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name); 773 774 err = -ENODEV; 775 if (!core->board.mpeg) 776 goto fail_core; 777 778 err = -ENOMEM; 779 dev = kzalloc(sizeof(*dev),GFP_KERNEL); 780 if (NULL == dev) 781 goto fail_core; 782 dev->pci = pci_dev; 783 dev->core = core; 784 785 /* Maintain a reference so cx88-video can query the 8802 device. */ 786 core->dvbdev = dev; 787 788 err = cx8802_init_common(dev); 789 if (err != 0) 790 goto fail_free; 791 792 INIT_LIST_HEAD(&dev->drvlist); 793 mutex_lock(&cx8802_mutex); 794 list_add_tail(&dev->devlist,&cx8802_devlist); 795 mutex_unlock(&cx8802_mutex); 796 797 /* now autoload cx88-dvb or cx88-blackbird */ 798 request_modules(dev); 799 return 0; 800 801 fail_free: 802 kfree(dev); 803 fail_core: 804 core->dvbdev = NULL; 805 cx88_core_put(core,pci_dev); 806 return err; 807 } 808 809 static void cx8802_remove(struct pci_dev *pci_dev) 810 { 811 struct cx8802_dev *dev; 812 813 dev = pci_get_drvdata(pci_dev); 814 815 dprintk( 1, "%s\n", __func__); 816 817 flush_request_modules(dev); 818 819 mutex_lock(&dev->core->lock); 820 821 if (!list_empty(&dev->drvlist)) { 822 struct cx8802_driver *drv, *tmp; 823 int err; 824 825 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver " 826 "while cx8802 sub-drivers still loaded?!\n", 827 dev->core->name); 828 829 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) { 830 err = drv->remove(drv); 831 if (err == 0) { 832 list_del(&drv->drvlist); 833 } else 834 printk(KERN_ERR "%s/2: cx8802 driver remove " 835 "failed (%d)\n", dev->core->name, err); 836 kfree(drv); 837 } 838 } 839 840 mutex_unlock(&dev->core->lock); 841 842 /* Destroy any 8802 reference. */ 843 dev->core->dvbdev = NULL; 844 845 /* common */ 846 cx8802_fini_common(dev); 847 cx88_core_put(dev->core,dev->pci); 848 kfree(dev); 849 } 850 851 static const struct pci_device_id cx8802_pci_tbl[] = { 852 { 853 .vendor = 0x14f1, 854 .device = 0x8802, 855 .subvendor = PCI_ANY_ID, 856 .subdevice = PCI_ANY_ID, 857 },{ 858 /* --- end of list --- */ 859 } 860 }; 861 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl); 862 863 static struct pci_driver cx8802_pci_driver = { 864 .name = "cx88-mpeg driver manager", 865 .id_table = cx8802_pci_tbl, 866 .probe = cx8802_probe, 867 .remove = cx8802_remove, 868 }; 869 870 module_pci_driver(cx8802_pci_driver); 871 872 EXPORT_SYMBOL(cx8802_buf_prepare); 873 EXPORT_SYMBOL(cx8802_buf_queue); 874 EXPORT_SYMBOL(cx8802_cancel_buffers); 875 876 EXPORT_SYMBOL(cx8802_register_driver); 877 EXPORT_SYMBOL(cx8802_unregister_driver); 878 EXPORT_SYMBOL(cx8802_get_driver); 879 /* ----------------------------------------------------------- */ 880 /* 881 * Local variables: 882 * c-basic-offset: 8 883 * End: 884 * 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 885 */ 886