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