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 37MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards"); 38MODULE_AUTHOR("Jelle Foks <jelle@foks.us>"); 39MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>"); 40MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]"); 41MODULE_LICENSE("GPL"); 42MODULE_VERSION(CX88_VERSION); 43 44static unsigned int debug; 45module_param(debug,int,0644); 46MODULE_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) 59static 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 69static 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 75static 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 85static LIST_HEAD(cx8802_devlist); 86static DEFINE_MUTEX(cx8802_mutex); 87/* ------------------------------------------------------------------ */ 88 89int 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 = 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 189static 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 206static 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.v4l2_buf.index); 218 cx8802_start_dma(dev, q, buf); 219 list_for_each_entry(buf, &q->active, list) 220 buf->count = q->count++; 221 return 0; 222} 223 224/* ------------------------------------------------------------------ */ 225 226int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev, 227 struct cx88_buffer *buf) 228{ 229 int size = dev->ts_packet_size * dev->ts_packet_count; 230 struct sg_table *sgt = vb2_dma_sg_plane_desc(&buf->vb, 0); 231 struct cx88_riscmem *risc = &buf->risc; 232 int rc; 233 234 if (vb2_plane_size(&buf->vb, 0) < size) 235 return -EINVAL; 236 vb2_set_plane_payload(&buf->vb, 0, size); 237 238 rc = cx88_risc_databuffer(dev->pci, risc, sgt->sgl, 239 dev->ts_packet_size, dev->ts_packet_count, 0); 240 if (rc) { 241 if (risc->cpu) 242 pci_free_consistent(dev->pci, risc->size, risc->cpu, risc->dma); 243 memset(risc, 0, sizeof(*risc)); 244 return rc; 245 } 246 return 0; 247} 248 249void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf) 250{ 251 struct cx88_buffer *prev; 252 struct cx88_dmaqueue *cx88q = &dev->mpegq; 253 254 dprintk( 1, "cx8802_buf_queue\n" ); 255 /* add jump to start */ 256 buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 8); 257 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC); 258 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 8); 259 260 if (list_empty(&cx88q->active)) { 261 dprintk( 1, "queue is empty - first active\n" ); 262 list_add_tail(&buf->list, &cx88q->active); 263 buf->count = cx88q->count++; 264 dprintk(1,"[%p/%d] %s - first active\n", 265 buf, buf->vb.v4l2_buf.index, __func__); 266 267 } else { 268 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1); 269 dprintk( 1, "queue is not empty - append to active\n" ); 270 prev = list_entry(cx88q->active.prev, struct cx88_buffer, list); 271 list_add_tail(&buf->list, &cx88q->active); 272 buf->count = cx88q->count++; 273 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 274 dprintk( 1, "[%p/%d] %s - append to active\n", 275 buf, buf->vb.v4l2_buf.index, __func__); 276 } 277} 278 279/* ----------------------------------------------------------- */ 280 281static void do_cancel_buffers(struct cx8802_dev *dev) 282{ 283 struct cx88_dmaqueue *q = &dev->mpegq; 284 struct cx88_buffer *buf; 285 unsigned long flags; 286 287 spin_lock_irqsave(&dev->slock,flags); 288 while (!list_empty(&q->active)) { 289 buf = list_entry(q->active.next, struct cx88_buffer, list); 290 list_del(&buf->list); 291 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 292 } 293 spin_unlock_irqrestore(&dev->slock,flags); 294} 295 296void cx8802_cancel_buffers(struct cx8802_dev *dev) 297{ 298 dprintk( 1, "cx8802_cancel_buffers" ); 299 cx8802_stop_dma(dev); 300 do_cancel_buffers(dev); 301} 302 303static const char * cx88_mpeg_irqs[32] = { 304 "ts_risci1", NULL, NULL, NULL, 305 "ts_risci2", NULL, NULL, NULL, 306 "ts_oflow", NULL, NULL, NULL, 307 "ts_sync", NULL, NULL, NULL, 308 "opc_err", "par_err", "rip_err", "pci_abort", 309 "ts_err?", 310}; 311 312static void cx8802_mpeg_irq(struct cx8802_dev *dev) 313{ 314 struct cx88_core *core = dev->core; 315 u32 status, mask, count; 316 317 dprintk( 1, "cx8802_mpeg_irq\n" ); 318 status = cx_read(MO_TS_INTSTAT); 319 mask = cx_read(MO_TS_INTMSK); 320 if (0 == (status & mask)) 321 return; 322 323 cx_write(MO_TS_INTSTAT, status); 324 325 if (debug || (status & mask & ~0xff)) 326 cx88_print_irqbits(core->name, "irq mpeg ", 327 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs), 328 status, mask); 329 330 /* risc op code error */ 331 if (status & (1 << 16)) { 332 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name); 333 cx_clear(MO_TS_DMACNTRL, 0x11); 334 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]); 335 } 336 337 /* risc1 y */ 338 if (status & 0x01) { 339 dprintk( 1, "wake up\n" ); 340 spin_lock(&dev->slock); 341 count = cx_read(MO_TS_GPCNT); 342 cx88_wakeup(dev->core, &dev->mpegq, count); 343 spin_unlock(&dev->slock); 344 } 345 346 /* other general errors */ 347 if (status & 0x1f0100) { 348 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 ); 349 spin_lock(&dev->slock); 350 cx8802_stop_dma(dev); 351 spin_unlock(&dev->slock); 352 } 353} 354 355#define MAX_IRQ_LOOP 10 356 357static irqreturn_t cx8802_irq(int irq, void *dev_id) 358{ 359 struct cx8802_dev *dev = dev_id; 360 struct cx88_core *core = dev->core; 361 u32 status; 362 int loop, handled = 0; 363 364 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { 365 status = cx_read(MO_PCI_INTSTAT) & 366 (core->pci_irqmask | PCI_INT_TSINT); 367 if (0 == status) 368 goto out; 369 dprintk( 1, "cx8802_irq\n" ); 370 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP ); 371 dprintk( 1, " status: %d\n", status ); 372 handled = 1; 373 cx_write(MO_PCI_INTSTAT, status); 374 375 if (status & core->pci_irqmask) 376 cx88_core_irq(core,status); 377 if (status & PCI_INT_TSINT) 378 cx8802_mpeg_irq(dev); 379 } 380 if (MAX_IRQ_LOOP == loop) { 381 dprintk( 0, "clearing mask\n" ); 382 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n", 383 core->name); 384 cx_write(MO_PCI_INTMSK,0); 385 } 386 387 out: 388 return IRQ_RETVAL(handled); 389} 390 391static int cx8802_init_common(struct cx8802_dev *dev) 392{ 393 struct cx88_core *core = dev->core; 394 int err; 395 396 /* pci init */ 397 if (pci_enable_device(dev->pci)) 398 return -EIO; 399 pci_set_master(dev->pci); 400 if (!pci_dma_supported(dev->pci,DMA_BIT_MASK(32))) { 401 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name); 402 return -EIO; 403 } 404 405 dev->pci_rev = dev->pci->revision; 406 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat); 407 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, " 408 "latency: %d, mmio: 0x%llx\n", dev->core->name, 409 pci_name(dev->pci), dev->pci_rev, dev->pci->irq, 410 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0)); 411 412 /* initialize driver struct */ 413 spin_lock_init(&dev->slock); 414 415 /* init dma queue */ 416 INIT_LIST_HEAD(&dev->mpegq.active); 417 418 /* get irq */ 419 err = request_irq(dev->pci->irq, cx8802_irq, 420 IRQF_SHARED, dev->core->name, dev); 421 if (err < 0) { 422 printk(KERN_ERR "%s: can't get IRQ %d\n", 423 dev->core->name, dev->pci->irq); 424 return err; 425 } 426 cx_set(MO_PCI_INTMSK, core->pci_irqmask); 427 428 /* everything worked */ 429 pci_set_drvdata(dev->pci,dev); 430 return 0; 431} 432 433static void cx8802_fini_common(struct cx8802_dev *dev) 434{ 435 dprintk( 2, "cx8802_fini_common\n" ); 436 cx8802_stop_dma(dev); 437 pci_disable_device(dev->pci); 438 439 /* unregister stuff */ 440 free_irq(dev->pci->irq, dev); 441} 442 443/* ----------------------------------------------------------- */ 444 445static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state) 446{ 447 struct cx8802_dev *dev = pci_get_drvdata(pci_dev); 448 struct cx88_core *core = dev->core; 449 unsigned long flags; 450 451 /* stop mpeg dma */ 452 spin_lock_irqsave(&dev->slock, flags); 453 if (!list_empty(&dev->mpegq.active)) { 454 dprintk( 2, "suspend\n" ); 455 printk("%s: suspend mpeg\n", core->name); 456 cx8802_stop_dma(dev); 457 } 458 spin_unlock_irqrestore(&dev->slock, flags); 459 460 /* FIXME -- shutdown device */ 461 cx88_shutdown(dev->core); 462 463 pci_save_state(pci_dev); 464 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) { 465 pci_disable_device(pci_dev); 466 dev->state.disabled = 1; 467 } 468 return 0; 469} 470 471static int cx8802_resume_common(struct pci_dev *pci_dev) 472{ 473 struct cx8802_dev *dev = pci_get_drvdata(pci_dev); 474 struct cx88_core *core = dev->core; 475 unsigned long flags; 476 int err; 477 478 if (dev->state.disabled) { 479 err=pci_enable_device(pci_dev); 480 if (err) { 481 printk(KERN_ERR "%s: can't enable device\n", 482 dev->core->name); 483 return err; 484 } 485 dev->state.disabled = 0; 486 } 487 err=pci_set_power_state(pci_dev, PCI_D0); 488 if (err) { 489 printk(KERN_ERR "%s: can't enable device\n", 490 dev->core->name); 491 pci_disable_device(pci_dev); 492 dev->state.disabled = 1; 493 494 return err; 495 } 496 pci_restore_state(pci_dev); 497 498 /* FIXME: re-initialize hardware */ 499 cx88_reset(dev->core); 500 501 /* restart video+vbi capture */ 502 spin_lock_irqsave(&dev->slock, flags); 503 if (!list_empty(&dev->mpegq.active)) { 504 printk("%s: resume mpeg\n", core->name); 505 cx8802_restart_queue(dev,&dev->mpegq); 506 } 507 spin_unlock_irqrestore(&dev->slock, flags); 508 509 return 0; 510} 511 512struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype) 513{ 514 struct cx8802_driver *d; 515 516 list_for_each_entry(d, &dev->drvlist, drvlist) 517 if (d->type_id == btype) 518 return d; 519 520 return NULL; 521} 522 523/* Driver asked for hardware access. */ 524static int cx8802_request_acquire(struct cx8802_driver *drv) 525{ 526 struct cx88_core *core = drv->core; 527 unsigned int i; 528 529 /* Fail a request for hardware if the device is busy. */ 530 if (core->active_type_id != CX88_BOARD_NONE && 531 core->active_type_id != drv->type_id) 532 return -EBUSY; 533 534 if (drv->type_id == CX88_MPEG_DVB) { 535 /* When switching to DVB, always set the input to the tuner */ 536 core->last_analog_input = core->input; 537 core->input = 0; 538 for (i = 0; 539 i < (sizeof(core->board.input) / sizeof(struct cx88_input)); 540 i++) { 541 if (core->board.input[i].type == CX88_VMUX_DVB) { 542 core->input = i; 543 break; 544 } 545 } 546 } 547 548 if (drv->advise_acquire) 549 { 550 core->active_ref++; 551 if (core->active_type_id == CX88_BOARD_NONE) { 552 core->active_type_id = drv->type_id; 553 drv->advise_acquire(drv); 554 } 555 556 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __func__, cx_read(MO_GP0_IO)); 557 } 558 559 return 0; 560} 561 562/* Driver asked to release hardware. */ 563static int cx8802_request_release(struct cx8802_driver *drv) 564{ 565 struct cx88_core *core = drv->core; 566 567 if (drv->advise_release && --core->active_ref == 0) 568 { 569 if (drv->type_id == CX88_MPEG_DVB) { 570 /* If the DVB driver is releasing, reset the input 571 state to the last configured analog input */ 572 core->input = core->last_analog_input; 573 } 574 575 drv->advise_release(drv); 576 core->active_type_id = CX88_BOARD_NONE; 577 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __func__, cx_read(MO_GP0_IO)); 578 } 579 580 return 0; 581} 582 583static int cx8802_check_driver(struct cx8802_driver *drv) 584{ 585 if (drv == NULL) 586 return -ENODEV; 587 588 if ((drv->type_id != CX88_MPEG_DVB) && 589 (drv->type_id != CX88_MPEG_BLACKBIRD)) 590 return -EINVAL; 591 592 if ((drv->hw_access != CX8802_DRVCTL_SHARED) && 593 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE)) 594 return -EINVAL; 595 596 if ((drv->probe == NULL) || 597 (drv->remove == NULL) || 598 (drv->advise_acquire == NULL) || 599 (drv->advise_release == NULL)) 600 return -EINVAL; 601 602 return 0; 603} 604 605int cx8802_register_driver(struct cx8802_driver *drv) 606{ 607 struct cx8802_dev *dev; 608 struct cx8802_driver *driver; 609 int err, i = 0; 610 611 printk(KERN_INFO 612 "cx88/2: registering cx8802 driver, type: %s access: %s\n", 613 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", 614 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive"); 615 616 if ((err = cx8802_check_driver(drv)) != 0) { 617 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n"); 618 return err; 619 } 620 621 mutex_lock(&cx8802_mutex); 622 623 list_for_each_entry(dev, &cx8802_devlist, devlist) { 624 printk(KERN_INFO 625 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n", 626 dev->core->name, dev->pci->subsystem_vendor, 627 dev->pci->subsystem_device, dev->core->board.name, 628 dev->core->boardnr); 629 630 /* Bring up a new struct for each driver instance */ 631 driver = kzalloc(sizeof(*drv),GFP_KERNEL); 632 if (driver == NULL) { 633 err = -ENOMEM; 634 goto out; 635 } 636 637 /* Snapshot of the driver registration data */ 638 drv->core = dev->core; 639 drv->suspend = cx8802_suspend_common; 640 drv->resume = cx8802_resume_common; 641 drv->request_acquire = cx8802_request_acquire; 642 drv->request_release = cx8802_request_release; 643 memcpy(driver, drv, sizeof(*driver)); 644 645 mutex_lock(&drv->core->lock); 646 err = drv->probe(driver); 647 if (err == 0) { 648 i++; 649 list_add_tail(&driver->drvlist, &dev->drvlist); 650 } else { 651 printk(KERN_ERR 652 "%s/2: cx8802 probe failed, err = %d\n", 653 dev->core->name, err); 654 } 655 mutex_unlock(&drv->core->lock); 656 } 657 658 err = i ? 0 : -ENODEV; 659out: 660 mutex_unlock(&cx8802_mutex); 661 return err; 662} 663 664int cx8802_unregister_driver(struct cx8802_driver *drv) 665{ 666 struct cx8802_dev *dev; 667 struct cx8802_driver *d, *dtmp; 668 int err = 0; 669 670 printk(KERN_INFO 671 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n", 672 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird", 673 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive"); 674 675 mutex_lock(&cx8802_mutex); 676 677 list_for_each_entry(dev, &cx8802_devlist, devlist) { 678 printk(KERN_INFO 679 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n", 680 dev->core->name, dev->pci->subsystem_vendor, 681 dev->pci->subsystem_device, dev->core->board.name, 682 dev->core->boardnr); 683 684 mutex_lock(&dev->core->lock); 685 686 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) { 687 /* only unregister the correct driver type */ 688 if (d->type_id != drv->type_id) 689 continue; 690 691 err = d->remove(d); 692 if (err == 0) { 693 list_del(&d->drvlist); 694 kfree(d); 695 } else 696 printk(KERN_ERR "%s/2: cx8802 driver remove " 697 "failed (%d)\n", dev->core->name, err); 698 } 699 700 mutex_unlock(&dev->core->lock); 701 } 702 703 mutex_unlock(&cx8802_mutex); 704 705 return err; 706} 707 708/* ----------------------------------------------------------- */ 709static int cx8802_probe(struct pci_dev *pci_dev, 710 const struct pci_device_id *pci_id) 711{ 712 struct cx8802_dev *dev; 713 struct cx88_core *core; 714 int err; 715 716 /* general setup */ 717 core = cx88_core_get(pci_dev); 718 if (NULL == core) 719 return -EINVAL; 720 721 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name); 722 723 err = -ENODEV; 724 if (!core->board.mpeg) 725 goto fail_core; 726 727 err = -ENOMEM; 728 dev = kzalloc(sizeof(*dev),GFP_KERNEL); 729 if (NULL == dev) 730 goto fail_core; 731 dev->pci = pci_dev; 732 dev->alloc_ctx = vb2_dma_sg_init_ctx(&pci_dev->dev); 733 if (IS_ERR(dev->alloc_ctx)) { 734 err = PTR_ERR(dev->alloc_ctx); 735 goto fail_dev; 736 } 737 dev->core = core; 738 739 /* Maintain a reference so cx88-video can query the 8802 device. */ 740 core->dvbdev = dev; 741 742 err = cx8802_init_common(dev); 743 if (err != 0) 744 goto fail_free; 745 746 INIT_LIST_HEAD(&dev->drvlist); 747 mutex_lock(&cx8802_mutex); 748 list_add_tail(&dev->devlist,&cx8802_devlist); 749 mutex_unlock(&cx8802_mutex); 750 751 /* now autoload cx88-dvb or cx88-blackbird */ 752 request_modules(dev); 753 return 0; 754 755 fail_free: 756 vb2_dma_sg_cleanup_ctx(dev->alloc_ctx); 757 fail_dev: 758 kfree(dev); 759 fail_core: 760 core->dvbdev = NULL; 761 cx88_core_put(core,pci_dev); 762 return err; 763} 764 765static void cx8802_remove(struct pci_dev *pci_dev) 766{ 767 struct cx8802_dev *dev; 768 769 dev = pci_get_drvdata(pci_dev); 770 771 dprintk( 1, "%s\n", __func__); 772 773 flush_request_modules(dev); 774 775 mutex_lock(&dev->core->lock); 776 777 if (!list_empty(&dev->drvlist)) { 778 struct cx8802_driver *drv, *tmp; 779 int err; 780 781 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver " 782 "while cx8802 sub-drivers still loaded?!\n", 783 dev->core->name); 784 785 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) { 786 err = drv->remove(drv); 787 if (err == 0) { 788 list_del(&drv->drvlist); 789 } else 790 printk(KERN_ERR "%s/2: cx8802 driver remove " 791 "failed (%d)\n", dev->core->name, err); 792 kfree(drv); 793 } 794 } 795 796 mutex_unlock(&dev->core->lock); 797 798 /* Destroy any 8802 reference. */ 799 dev->core->dvbdev = NULL; 800 801 /* common */ 802 cx8802_fini_common(dev); 803 cx88_core_put(dev->core,dev->pci); 804 vb2_dma_sg_cleanup_ctx(dev->alloc_ctx); 805 kfree(dev); 806} 807 808static const struct pci_device_id cx8802_pci_tbl[] = { 809 { 810 .vendor = 0x14f1, 811 .device = 0x8802, 812 .subvendor = PCI_ANY_ID, 813 .subdevice = PCI_ANY_ID, 814 },{ 815 /* --- end of list --- */ 816 } 817}; 818MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl); 819 820static struct pci_driver cx8802_pci_driver = { 821 .name = "cx88-mpeg driver manager", 822 .id_table = cx8802_pci_tbl, 823 .probe = cx8802_probe, 824 .remove = cx8802_remove, 825}; 826 827module_pci_driver(cx8802_pci_driver); 828 829EXPORT_SYMBOL(cx8802_buf_prepare); 830EXPORT_SYMBOL(cx8802_buf_queue); 831EXPORT_SYMBOL(cx8802_cancel_buffers); 832EXPORT_SYMBOL(cx8802_start_dma); 833 834EXPORT_SYMBOL(cx8802_register_driver); 835EXPORT_SYMBOL(cx8802_unregister_driver); 836EXPORT_SYMBOL(cx8802_get_driver); 837