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 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 core->width, core->height, core->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, dev->ts_packet_size); 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 = 0; 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, list); 216 dprintk(2,"restart_queue [%p/%d]: restart dma\n", 217 buf, buf->vb.vb2_buf.index); 218 cx8802_start_dma(dev, q, buf); 219 return 0; 220 } 221 222 /* ------------------------------------------------------------------ */ 223 224 int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev, 225 struct cx88_buffer *buf) 226 { 227 int size = dev->ts_packet_size * dev->ts_packet_count; 228 struct sg_table *sgt = vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0); 229 struct cx88_riscmem *risc = &buf->risc; 230 int rc; 231 232 if (vb2_plane_size(&buf->vb.vb2_buf, 0) < size) 233 return -EINVAL; 234 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size); 235 236 rc = cx88_risc_databuffer(dev->pci, risc, sgt->sgl, 237 dev->ts_packet_size, dev->ts_packet_count, 0); 238 if (rc) { 239 if (risc->cpu) 240 pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma); 241 memset(risc, 0, sizeof(*risc)); 242 return rc; 243 } 244 return 0; 245 } 246 247 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf) 248 { 249 struct cx88_buffer *prev; 250 struct cx88_dmaqueue *cx88q = &dev->mpegq; 251 252 dprintk( 1, "cx8802_buf_queue\n" ); 253 /* add jump to start */ 254 buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 8); 255 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC); 256 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 8); 257 258 if (list_empty(&cx88q->active)) { 259 dprintk( 1, "queue is empty - first active\n" ); 260 list_add_tail(&buf->list, &cx88q->active); 261 dprintk(1,"[%p/%d] %s - first active\n", 262 buf, buf->vb.vb2_buf.index, __func__); 263 264 } else { 265 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1); 266 dprintk( 1, "queue is not empty - append to active\n" ); 267 prev = list_entry(cx88q->active.prev, struct cx88_buffer, list); 268 list_add_tail(&buf->list, &cx88q->active); 269 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 270 dprintk( 1, "[%p/%d] %s - append to active\n", 271 buf, buf->vb.vb2_buf.index, __func__); 272 } 273 } 274 275 /* ----------------------------------------------------------- */ 276 277 static void do_cancel_buffers(struct cx8802_dev *dev) 278 { 279 struct cx88_dmaqueue *q = &dev->mpegq; 280 struct cx88_buffer *buf; 281 unsigned long flags; 282 283 spin_lock_irqsave(&dev->slock,flags); 284 while (!list_empty(&q->active)) { 285 buf = list_entry(q->active.next, struct cx88_buffer, list); 286 list_del(&buf->list); 287 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 288 } 289 spin_unlock_irqrestore(&dev->slock,flags); 290 } 291 292 void cx8802_cancel_buffers(struct cx8802_dev *dev) 293 { 294 dprintk( 1, "cx8802_cancel_buffers" ); 295 cx8802_stop_dma(dev); 296 do_cancel_buffers(dev); 297 } 298 299 static const char * cx88_mpeg_irqs[32] = { 300 "ts_risci1", NULL, NULL, NULL, 301 "ts_risci2", NULL, NULL, NULL, 302 "ts_oflow", NULL, NULL, NULL, 303 "ts_sync", NULL, NULL, NULL, 304 "opc_err", "par_err", "rip_err", "pci_abort", 305 "ts_err?", 306 }; 307 308 static void cx8802_mpeg_irq(struct cx8802_dev *dev) 309 { 310 struct cx88_core *core = dev->core; 311 u32 status, mask, count; 312 313 dprintk( 1, "cx8802_mpeg_irq\n" ); 314 status = cx_read(MO_TS_INTSTAT); 315 mask = cx_read(MO_TS_INTMSK); 316 if (0 == (status & mask)) 317 return; 318 319 cx_write(MO_TS_INTSTAT, status); 320 321 if (debug || (status & mask & ~0xff)) 322 cx88_print_irqbits(core->name, "irq mpeg ", 323 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs), 324 status, mask); 325 326 /* risc op code error */ 327 if (status & (1 << 16)) { 328 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name); 329 cx_clear(MO_TS_DMACNTRL, 0x11); 330 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]); 331 } 332 333 /* risc1 y */ 334 if (status & 0x01) { 335 dprintk( 1, "wake up\n" ); 336 spin_lock(&dev->slock); 337 count = cx_read(MO_TS_GPCNT); 338 cx88_wakeup(dev->core, &dev->mpegq, count); 339 spin_unlock(&dev->slock); 340 } 341 342 /* other general errors */ 343 if (status & 0x1f0100) { 344 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 ); 345 spin_lock(&dev->slock); 346 cx8802_stop_dma(dev); 347 spin_unlock(&dev->slock); 348 } 349 } 350 351 #define MAX_IRQ_LOOP 10 352 353 static irqreturn_t cx8802_irq(int irq, void *dev_id) 354 { 355 struct cx8802_dev *dev = dev_id; 356 struct cx88_core *core = dev->core; 357 u32 status; 358 int loop, handled = 0; 359 360 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { 361 status = cx_read(MO_PCI_INTSTAT) & 362 (core->pci_irqmask | PCI_INT_TSINT); 363 if (0 == status) 364 goto out; 365 dprintk( 1, "cx8802_irq\n" ); 366 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP ); 367 dprintk( 1, " status: %d\n", status ); 368 handled = 1; 369 cx_write(MO_PCI_INTSTAT, status); 370 371 if (status & core->pci_irqmask) 372 cx88_core_irq(core,status); 373 if (status & PCI_INT_TSINT) 374 cx8802_mpeg_irq(dev); 375 } 376 if (MAX_IRQ_LOOP == loop) { 377 dprintk( 0, "clearing mask\n" ); 378 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n", 379 core->name); 380 cx_write(MO_PCI_INTMSK,0); 381 } 382 383 out: 384 return IRQ_RETVAL(handled); 385 } 386 387 static int cx8802_init_common(struct cx8802_dev *dev) 388 { 389 struct cx88_core *core = dev->core; 390 int err; 391 392 /* pci init */ 393 if (pci_enable_device(dev->pci)) 394 return -EIO; 395 pci_set_master(dev->pci); 396 err = pci_set_dma_mask(dev->pci,DMA_BIT_MASK(32)); 397 if (err) { 398 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name); 399 return -EIO; 400 } 401 402 dev->pci_rev = dev->pci->revision; 403 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat); 404 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, " 405 "latency: %d, mmio: 0x%llx\n", dev->core->name, 406 pci_name(dev->pci), dev->pci_rev, dev->pci->irq, 407 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0)); 408 409 /* initialize driver struct */ 410 spin_lock_init(&dev->slock); 411 412 /* init dma queue */ 413 INIT_LIST_HEAD(&dev->mpegq.active); 414 415 /* get irq */ 416 err = request_irq(dev->pci->irq, cx8802_irq, 417 IRQF_SHARED, dev->core->name, dev); 418 if (err < 0) { 419 printk(KERN_ERR "%s: can't get IRQ %d\n", 420 dev->core->name, dev->pci->irq); 421 return err; 422 } 423 cx_set(MO_PCI_INTMSK, core->pci_irqmask); 424 425 /* everything worked */ 426 pci_set_drvdata(dev->pci,dev); 427 return 0; 428 } 429 430 static void cx8802_fini_common(struct cx8802_dev *dev) 431 { 432 dprintk( 2, "cx8802_fini_common\n" ); 433 cx8802_stop_dma(dev); 434 pci_disable_device(dev->pci); 435 436 /* unregister stuff */ 437 free_irq(dev->pci->irq, dev); 438 } 439 440 /* ----------------------------------------------------------- */ 441 442 static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state) 443 { 444 struct cx8802_dev *dev = pci_get_drvdata(pci_dev); 445 struct cx88_core *core = dev->core; 446 unsigned long flags; 447 448 /* stop mpeg dma */ 449 spin_lock_irqsave(&dev->slock, flags); 450 if (!list_empty(&dev->mpegq.active)) { 451 dprintk( 2, "suspend\n" ); 452 printk("%s: suspend mpeg\n", core->name); 453 cx8802_stop_dma(dev); 454 } 455 spin_unlock_irqrestore(&dev->slock, flags); 456 457 /* FIXME -- shutdown device */ 458 cx88_shutdown(dev->core); 459 460 pci_save_state(pci_dev); 461 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) { 462 pci_disable_device(pci_dev); 463 dev->state.disabled = 1; 464 } 465 return 0; 466 } 467 468 static int cx8802_resume_common(struct pci_dev *pci_dev) 469 { 470 struct cx8802_dev *dev = pci_get_drvdata(pci_dev); 471 struct cx88_core *core = dev->core; 472 unsigned long flags; 473 int err; 474 475 if (dev->state.disabled) { 476 err=pci_enable_device(pci_dev); 477 if (err) { 478 printk(KERN_ERR "%s: can't enable device\n", 479 dev->core->name); 480 return err; 481 } 482 dev->state.disabled = 0; 483 } 484 err=pci_set_power_state(pci_dev, PCI_D0); 485 if (err) { 486 printk(KERN_ERR "%s: can't enable device\n", 487 dev->core->name); 488 pci_disable_device(pci_dev); 489 dev->state.disabled = 1; 490 491 return err; 492 } 493 pci_restore_state(pci_dev); 494 495 /* FIXME: re-initialize hardware */ 496 cx88_reset(dev->core); 497 498 /* restart video+vbi capture */ 499 spin_lock_irqsave(&dev->slock, flags); 500 if (!list_empty(&dev->mpegq.active)) { 501 printk("%s: resume mpeg\n", core->name); 502 cx8802_restart_queue(dev,&dev->mpegq); 503 } 504 spin_unlock_irqrestore(&dev->slock, flags); 505 506 return 0; 507 } 508 509 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype) 510 { 511 struct cx8802_driver *d; 512 513 list_for_each_entry(d, &dev->drvlist, drvlist) 514 if (d->type_id == btype) 515 return d; 516 517 return NULL; 518 } 519 520 /* Driver asked for hardware access. */ 521 static int cx8802_request_acquire(struct cx8802_driver *drv) 522 { 523 struct cx88_core *core = drv->core; 524 unsigned int i; 525 526 /* Fail a request for hardware if the device is busy. */ 527 if (core->active_type_id != CX88_BOARD_NONE && 528 core->active_type_id != drv->type_id) 529 return -EBUSY; 530 531 if (drv->type_id == CX88_MPEG_DVB) { 532 /* When switching to DVB, always set the input to the tuner */ 533 core->last_analog_input = core->input; 534 core->input = 0; 535 for (i = 0; 536 i < (sizeof(core->board.input) / sizeof(struct cx88_input)); 537 i++) { 538 if (core->board.input[i].type == CX88_VMUX_DVB) { 539 core->input = i; 540 break; 541 } 542 } 543 } 544 545 if (drv->advise_acquire) 546 { 547 core->active_ref++; 548 if (core->active_type_id == CX88_BOARD_NONE) { 549 core->active_type_id = drv->type_id; 550 drv->advise_acquire(drv); 551 } 552 553 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO)); 554 } 555 556 return 0; 557 } 558 559 /* Driver asked to release hardware. */ 560 static int cx8802_request_release(struct cx8802_driver *drv) 561 { 562 struct cx88_core *core = drv->core; 563 564 if (drv->advise_release && --core->active_ref == 0) 565 { 566 if (drv->type_id == CX88_MPEG_DVB) { 567 /* If the DVB driver is releasing, reset the input 568 state to the last configured analog input */ 569 core->input = core->last_analog_input; 570 } 571 572 drv->advise_release(drv); 573 core->active_type_id = CX88_BOARD_NONE; 574 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO)); 575 } 576 577 return 0; 578 } 579 580 static int cx8802_check_driver(struct cx8802_driver *drv) 581 { 582 if (drv == NULL) 583 return -ENODEV; 584 585 if ((drv->type_id != CX88_MPEG_DVB) && 586 (drv->type_id != CX88_MPEG_BLACKBIRD)) 587 return -EINVAL; 588 589 if ((drv->hw_access != CX8802_DRVCTL_SHARED) && 590 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE)) 591 return -EINVAL; 592 593 if ((drv->probe == NULL) || 594 (drv->remove == NULL) || 595 (drv->advise_acquire == NULL) || 596 (drv->advise_release == NULL)) 597 return -EINVAL; 598 599 return 0; 600 } 601 602 int cx8802_register_driver(struct cx8802_driver *drv) 603 { 604 struct cx8802_dev *dev; 605 struct cx8802_driver *driver; 606 int err, i = 0; 607 608 printk(KERN_INFO 609 "cx88/2: registering cx8802 driver, type: %s access: %s\n", 610 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", 611 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive"); 612 613 if ((err = cx8802_check_driver(drv)) != 0) { 614 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n"); 615 return err; 616 } 617 618 mutex_lock(&cx8802_mutex); 619 620 list_for_each_entry(dev, &cx8802_devlist, devlist) { 621 printk(KERN_INFO 622 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n", 623 dev->core->name, dev->pci->subsystem_vendor, 624 dev->pci->subsystem_device, dev->core->board.name, 625 dev->core->boardnr); 626 627 /* Bring up a new struct for each driver instance */ 628 driver = kzalloc(sizeof(*drv),GFP_KERNEL); 629 if (driver == NULL) { 630 err = -ENOMEM; 631 goto out; 632 } 633 634 /* Snapshot of the driver registration data */ 635 drv->core = dev->core; 636 drv->suspend = cx8802_suspend_common; 637 drv->resume = cx8802_resume_common; 638 drv->request_acquire = cx8802_request_acquire; 639 drv->request_release = cx8802_request_release; 640 memcpy(driver, drv, sizeof(*driver)); 641 642 mutex_lock(&drv->core->lock); 643 err = drv->probe(driver); 644 if (err == 0) { 645 i++; 646 list_add_tail(&driver->drvlist, &dev->drvlist); 647 } else { 648 printk(KERN_ERR 649 "%s/2: cx8802 probe failed, err = %d\n", 650 dev->core->name, err); 651 } 652 mutex_unlock(&drv->core->lock); 653 } 654 655 err = i ? 0 : -ENODEV; 656 out: 657 mutex_unlock(&cx8802_mutex); 658 return err; 659 } 660 661 int cx8802_unregister_driver(struct cx8802_driver *drv) 662 { 663 struct cx8802_dev *dev; 664 struct cx8802_driver *d, *dtmp; 665 int err = 0; 666 667 printk(KERN_INFO 668 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n", 669 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", 670 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive"); 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 mutex_lock(&dev->core->lock); 682 683 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) { 684 /* only unregister the correct driver type */ 685 if (d->type_id != drv->type_id) 686 continue; 687 688 err = d->remove(d); 689 if (err == 0) { 690 list_del(&d->drvlist); 691 kfree(d); 692 } else 693 printk(KERN_ERR "%s/2: cx8802 driver remove " 694 "failed (%d)\n", dev->core->name, err); 695 } 696 697 mutex_unlock(&dev->core->lock); 698 } 699 700 mutex_unlock(&cx8802_mutex); 701 702 return err; 703 } 704 705 /* ----------------------------------------------------------- */ 706 static int cx8802_probe(struct pci_dev *pci_dev, 707 const struct pci_device_id *pci_id) 708 { 709 struct cx8802_dev *dev; 710 struct cx88_core *core; 711 int err; 712 713 /* general setup */ 714 core = cx88_core_get(pci_dev); 715 if (NULL == core) 716 return -EINVAL; 717 718 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name); 719 720 err = -ENODEV; 721 if (!core->board.mpeg) 722 goto fail_core; 723 724 err = -ENOMEM; 725 dev = kzalloc(sizeof(*dev),GFP_KERNEL); 726 if (NULL == dev) 727 goto fail_core; 728 dev->pci = pci_dev; 729 dev->core = core; 730 731 /* Maintain a reference so cx88-video can query the 8802 device. */ 732 core->dvbdev = dev; 733 734 err = cx8802_init_common(dev); 735 if (err != 0) 736 goto fail_dev; 737 738 INIT_LIST_HEAD(&dev->drvlist); 739 mutex_lock(&cx8802_mutex); 740 list_add_tail(&dev->devlist,&cx8802_devlist); 741 mutex_unlock(&cx8802_mutex); 742 743 /* now autoload cx88-dvb or cx88-blackbird */ 744 request_modules(dev); 745 return 0; 746 747 fail_dev: 748 kfree(dev); 749 fail_core: 750 core->dvbdev = NULL; 751 cx88_core_put(core,pci_dev); 752 return err; 753 } 754 755 static void cx8802_remove(struct pci_dev *pci_dev) 756 { 757 struct cx8802_dev *dev; 758 759 dev = pci_get_drvdata(pci_dev); 760 761 dprintk( 1, "%s\n", __func__); 762 763 flush_request_modules(dev); 764 765 mutex_lock(&dev->core->lock); 766 767 if (!list_empty(&dev->drvlist)) { 768 struct cx8802_driver *drv, *tmp; 769 int err; 770 771 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver " 772 "while cx8802 sub-drivers still loaded?!\n", 773 dev->core->name); 774 775 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) { 776 err = drv->remove(drv); 777 if (err == 0) { 778 list_del(&drv->drvlist); 779 } else 780 printk(KERN_ERR "%s/2: cx8802 driver remove " 781 "failed (%d)\n", dev->core->name, err); 782 kfree(drv); 783 } 784 } 785 786 mutex_unlock(&dev->core->lock); 787 788 /* Destroy any 8802 reference. */ 789 dev->core->dvbdev = NULL; 790 791 /* common */ 792 cx8802_fini_common(dev); 793 cx88_core_put(dev->core,dev->pci); 794 kfree(dev); 795 } 796 797 static const struct pci_device_id cx8802_pci_tbl[] = { 798 { 799 .vendor = 0x14f1, 800 .device = 0x8802, 801 .subvendor = PCI_ANY_ID, 802 .subdevice = PCI_ANY_ID, 803 },{ 804 /* --- end of list --- */ 805 } 806 }; 807 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl); 808 809 static struct pci_driver cx8802_pci_driver = { 810 .name = "cx88-mpeg driver manager", 811 .id_table = cx8802_pci_tbl, 812 .probe = cx8802_probe, 813 .remove = cx8802_remove, 814 }; 815 816 module_pci_driver(cx8802_pci_driver); 817 818 EXPORT_SYMBOL(cx8802_buf_prepare); 819 EXPORT_SYMBOL(cx8802_buf_queue); 820 EXPORT_SYMBOL(cx8802_cancel_buffers); 821 EXPORT_SYMBOL(cx8802_start_dma); 822 823 EXPORT_SYMBOL(cx8802_register_driver); 824 EXPORT_SYMBOL(cx8802_unregister_driver); 825 EXPORT_SYMBOL(cx8802_get_driver); 826