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21#include "cx88.h"
22
23#include <linux/module.h>
24#include <linux/slab.h>
25#include <linux/init.h>
26#include <linux/device.h>
27#include <linux/dma-mapping.h>
28#include <linux/interrupt.h>
29#include <linux/delay.h>
30
31
32
33MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
34MODULE_AUTHOR("Jelle Foks <jelle@foks.us>");
35MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
36MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
37MODULE_LICENSE("GPL");
38MODULE_VERSION(CX88_VERSION);
39
40static unsigned int debug;
41module_param(debug, int, 0644);
42MODULE_PARM_DESC(debug, "enable debug messages [mpeg]");
43
44#define dprintk(level, fmt, arg...) do { \
45 if (debug + 1 > level) \
46 printk(KERN_DEBUG pr_fmt("%s: mpeg:" fmt), \
47 __func__, ##arg); \
48} while (0)
49
50#if defined(CONFIG_MODULES) && defined(MODULE)
51static void request_module_async(struct work_struct *work)
52{
53 struct cx8802_dev *dev = container_of(work, struct cx8802_dev,
54 request_module_wk);
55
56 if (dev->core->board.mpeg & CX88_MPEG_DVB)
57 request_module("cx88-dvb");
58 if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
59 request_module("cx88-blackbird");
60}
61
62static void request_modules(struct cx8802_dev *dev)
63{
64 INIT_WORK(&dev->request_module_wk, request_module_async);
65 schedule_work(&dev->request_module_wk);
66}
67
68static void flush_request_modules(struct cx8802_dev *dev)
69{
70 flush_work(&dev->request_module_wk);
71}
72#else
73#define request_modules(dev)
74#define flush_request_modules(dev)
75#endif
76
77static LIST_HEAD(cx8802_devlist);
78static DEFINE_MUTEX(cx8802_mutex);
79
80
81int cx8802_start_dma(struct cx8802_dev *dev,
82 struct cx88_dmaqueue *q,
83 struct cx88_buffer *buf)
84{
85 struct cx88_core *core = dev->core;
86
87 dprintk(1, "w: %d, h: %d, f: %d\n",
88 core->width, core->height, core->field);
89
90
91 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
92 dev->ts_packet_size, buf->risc.dma);
93
94
95 cx_write(MO_TS_LNGTH, dev->ts_packet_size);
96
97
98
99
100
101
102 dprintk(1, "core->active_type_id = 0x%08x\n", core->active_type_id);
103
104 if ((core->active_type_id == CX88_MPEG_DVB) &&
105 (core->board.mpeg & CX88_MPEG_DVB)) {
106 dprintk(1, "cx8802_start_dma doing .dvb\n");
107
108 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
109 udelay(100);
110 cx_write(MO_PINMUX_IO, 0x00);
111 cx_write(TS_HW_SOP_CNTRL, 0x47 << 16 | 188 << 4 | 0x01);
112 switch (core->boardnr) {
113 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
114 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
115 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
116 case CX88_BOARD_PCHDTV_HD5500:
117 cx_write(TS_SOP_STAT, 1 << 13);
118 break;
119 case CX88_BOARD_SAMSUNG_SMT_7020:
120 cx_write(TS_SOP_STAT, 0x00);
121 break;
122 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
123 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
124
125 cx_write(MO_PINMUX_IO, 0x88);
126 udelay(100);
127 break;
128 case CX88_BOARD_HAUPPAUGE_HVR1300:
129
130 cx_write(MO_PINMUX_IO, 0x88);
131 cx_write(TS_SOP_STAT, 0);
132 cx_write(TS_VALERR_CNTRL, 0);
133 break;
134 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
135
136 cx_write(MO_PINMUX_IO, 0x88);
137 cx_write(TS_HW_SOP_CNTRL, (0x47 << 16) | (188 << 4));
138 dev->ts_gen_cntrl = 5;
139 cx_write(TS_SOP_STAT, 0);
140 cx_write(TS_VALERR_CNTRL, 0);
141 udelay(100);
142 break;
143 default:
144 cx_write(TS_SOP_STAT, 0x00);
145 break;
146 }
147 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
148 udelay(100);
149 } else if ((core->active_type_id == CX88_MPEG_BLACKBIRD) &&
150 (core->board.mpeg & CX88_MPEG_BLACKBIRD)) {
151 dprintk(1, "cx8802_start_dma doing .blackbird\n");
152 cx_write(MO_PINMUX_IO, 0x88);
153
154
155 cx_write(TS_GEN_CNTRL, 0x46);
156 udelay(100);
157
158 cx_write(TS_HW_SOP_CNTRL, 0x408);
159 cx_write(TS_VALERR_CNTRL, 0x2000);
160
161
162 cx_write(TS_GEN_CNTRL, 0x06);
163 udelay(100);
164 } else {
165 pr_err("%s() Failed. Unsupported value in .mpeg (0x%08x)\n",
166 __func__, core->board.mpeg);
167 return -EINVAL;
168 }
169
170
171 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
172 q->count = 0;
173
174
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
180 cx_set(MO_DEV_CNTRL2, (1 << 5));
181 cx_set(MO_TS_DMACNTRL, 0x11);
182 return 0;
183}
184EXPORT_SYMBOL(cx8802_start_dma);
185
186static int cx8802_stop_dma(struct cx8802_dev *dev)
187{
188 struct cx88_core *core = dev->core;
189
190 dprintk(1, "\n");
191
192
193 cx_clear(MO_TS_DMACNTRL, 0x11);
194
195
196 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
197 cx_clear(MO_TS_INTMSK, 0x1f0011);
198
199
200 cx_write(TS_GEN_CNTRL, 0xcd);
201 return 0;
202}
203
204static int cx8802_restart_queue(struct cx8802_dev *dev,
205 struct cx88_dmaqueue *q)
206{
207 struct cx88_buffer *buf;
208
209 dprintk(1, "\n");
210 if (list_empty(&q->active))
211 return 0;
212
213 buf = list_entry(q->active.next, struct cx88_buffer, list);
214 dprintk(2, "restart_queue [%p/%d]: restart dma\n",
215 buf, buf->vb.vb2_buf.index);
216 cx8802_start_dma(dev, q, buf);
217 return 0;
218}
219
220
221
222int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev,
223 struct cx88_buffer *buf)
224{
225 int size = dev->ts_packet_size * dev->ts_packet_count;
226 struct sg_table *sgt = vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0);
227 struct cx88_riscmem *risc = &buf->risc;
228 int rc;
229
230 if (vb2_plane_size(&buf->vb.vb2_buf, 0) < size)
231 return -EINVAL;
232 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
233
234 rc = cx88_risc_databuffer(dev->pci, risc, sgt->sgl,
235 dev->ts_packet_size, dev->ts_packet_count, 0);
236 if (rc) {
237 if (risc->cpu)
238 pci_free_consistent(dev->pci, risc->size,
239 risc->cpu, risc->dma);
240 memset(risc, 0, sizeof(*risc));
241 return rc;
242 }
243 return 0;
244}
245EXPORT_SYMBOL(cx8802_buf_prepare);
246
247void 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, "\n");
253
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}
274EXPORT_SYMBOL(cx8802_buf_queue);
275
276
277
278static void do_cancel_buffers(struct cx8802_dev *dev)
279{
280 struct cx88_dmaqueue *q = &dev->mpegq;
281 struct cx88_buffer *buf;
282 unsigned long flags;
283
284 spin_lock_irqsave(&dev->slock, flags);
285 while (!list_empty(&q->active)) {
286 buf = list_entry(q->active.next, struct cx88_buffer, list);
287 list_del(&buf->list);
288 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
289 }
290 spin_unlock_irqrestore(&dev->slock, flags);
291}
292
293void cx8802_cancel_buffers(struct cx8802_dev *dev)
294{
295 dprintk(1, "\n");
296 cx8802_stop_dma(dev);
297 do_cancel_buffers(dev);
298}
299EXPORT_SYMBOL(cx8802_cancel_buffers);
300
301static const char *cx88_mpeg_irqs[32] = {
302 "ts_risci1", NULL, NULL, NULL,
303 "ts_risci2", NULL, NULL, NULL,
304 "ts_oflow", NULL, NULL, NULL,
305 "ts_sync", NULL, NULL, NULL,
306 "opc_err", "par_err", "rip_err", "pci_abort",
307 "ts_err?",
308};
309
310static void cx8802_mpeg_irq(struct cx8802_dev *dev)
311{
312 struct cx88_core *core = dev->core;
313 u32 status, mask, count;
314
315 dprintk(1, "\n");
316 status = cx_read(MO_TS_INTSTAT);
317 mask = cx_read(MO_TS_INTMSK);
318 if (0 == (status & mask))
319 return;
320
321 cx_write(MO_TS_INTSTAT, status);
322
323 if (debug || (status & mask & ~0xff))
324 cx88_print_irqbits("irq mpeg ",
325 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
326 status, mask);
327
328
329 if (status & (1 << 16)) {
330 pr_warn("mpeg risc op code error\n");
331 cx_clear(MO_TS_DMACNTRL, 0x11);
332 cx88_sram_channel_dump(dev->core,
333 &cx88_sram_channels[SRAM_CH28]);
334 }
335
336
337 if (status & 0x01) {
338 dprintk(1, "wake up\n");
339 spin_lock(&dev->slock);
340 count = cx_read(MO_TS_GPCNT);
341 cx88_wakeup(dev->core, &dev->mpegq, count);
342 spin_unlock(&dev->slock);
343 }
344
345
346 if (status & 0x1f0100) {
347 dprintk(0, "general errors: 0x%08x\n", status & 0x1f0100);
348 spin_lock(&dev->slock);
349 cx8802_stop_dma(dev);
350 spin_unlock(&dev->slock);
351 }
352}
353
354#define MAX_IRQ_LOOP 10
355
356static irqreturn_t cx8802_irq(int irq, void *dev_id)
357{
358 struct cx8802_dev *dev = dev_id;
359 struct cx88_core *core = dev->core;
360 u32 status;
361 int loop, handled = 0;
362
363 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
364 status = cx_read(MO_PCI_INTSTAT) &
365 (core->pci_irqmask | PCI_INT_TSINT);
366 if (status == 0)
367 goto out;
368 dprintk(1, "cx8802_irq\n");
369 dprintk(1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP);
370 dprintk(1, " status: %d\n", status);
371 handled = 1;
372 cx_write(MO_PCI_INTSTAT, status);
373
374 if (status & core->pci_irqmask)
375 cx88_core_irq(core, status);
376 if (status & PCI_INT_TSINT)
377 cx8802_mpeg_irq(dev);
378 }
379 if (loop == MAX_IRQ_LOOP) {
380 dprintk(0, "clearing mask\n");
381 pr_warn("irq loop -- clearing mask\n");
382 cx_write(MO_PCI_INTMSK, 0);
383 }
384
385 out:
386 return IRQ_RETVAL(handled);
387}
388
389static int cx8802_init_common(struct cx8802_dev *dev)
390{
391 struct cx88_core *core = dev->core;
392 int err;
393
394
395 if (pci_enable_device(dev->pci))
396 return -EIO;
397 pci_set_master(dev->pci);
398 err = pci_set_dma_mask(dev->pci, DMA_BIT_MASK(32));
399 if (err) {
400 pr_err("Oops: no 32bit PCI DMA ???\n");
401 return -EIO;
402 }
403
404 dev->pci_rev = dev->pci->revision;
405 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
406 pr_info("found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n",
407 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
408 dev->pci_lat,
409 (unsigned long long)pci_resource_start(dev->pci, 0));
410
411
412 spin_lock_init(&dev->slock);
413
414
415 INIT_LIST_HEAD(&dev->mpegq.active);
416
417
418 err = request_irq(dev->pci->irq, cx8802_irq,
419 IRQF_SHARED, dev->core->name, dev);
420 if (err < 0) {
421 pr_err("can't get IRQ %d\n", dev->pci->irq);
422 return err;
423 }
424 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
425
426
427 pci_set_drvdata(dev->pci, dev);
428 return 0;
429}
430
431static void cx8802_fini_common(struct cx8802_dev *dev)
432{
433 dprintk(2, "\n");
434 cx8802_stop_dma(dev);
435 pci_disable_device(dev->pci);
436
437
438 free_irq(dev->pci->irq, dev);
439}
440
441
442
443static int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
444{
445 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
446 unsigned long flags;
447
448
449 spin_lock_irqsave(&dev->slock, flags);
450 if (!list_empty(&dev->mpegq.active)) {
451 dprintk(2, "suspend\n");
452 pr_info("suspend mpeg\n");
453 cx8802_stop_dma(dev);
454 }
455 spin_unlock_irqrestore(&dev->slock, flags);
456
457
458 cx88_shutdown(dev->core);
459
460 pci_save_state(pci_dev);
461 if (pci_set_power_state(pci_dev,
462 pci_choose_state(pci_dev, state)) != 0) {
463 pci_disable_device(pci_dev);
464 dev->state.disabled = 1;
465 }
466 return 0;
467}
468
469static int cx8802_resume_common(struct pci_dev *pci_dev)
470{
471 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
472 unsigned long flags;
473 int err;
474
475 if (dev->state.disabled) {
476 err = pci_enable_device(pci_dev);
477 if (err) {
478 pr_err("can't enable device\n");
479 return err;
480 }
481 dev->state.disabled = 0;
482 }
483 err = pci_set_power_state(pci_dev, PCI_D0);
484 if (err) {
485 pr_err("can't enable device\n");
486 pci_disable_device(pci_dev);
487 dev->state.disabled = 1;
488
489 return err;
490 }
491 pci_restore_state(pci_dev);
492
493
494 cx88_reset(dev->core);
495
496
497 spin_lock_irqsave(&dev->slock, flags);
498 if (!list_empty(&dev->mpegq.active)) {
499 pr_info("resume mpeg\n");
500 cx8802_restart_queue(dev, &dev->mpegq);
501 }
502 spin_unlock_irqrestore(&dev->slock, flags);
503
504 return 0;
505}
506
507struct cx8802_driver *cx8802_get_driver(struct cx8802_dev *dev,
508 enum cx88_board_type btype)
509{
510 struct cx8802_driver *d;
511
512 list_for_each_entry(d, &dev->drvlist, drvlist)
513 if (d->type_id == btype)
514 return d;
515
516 return NULL;
517}
518EXPORT_SYMBOL(cx8802_get_driver);
519
520
521static int cx8802_request_acquire(struct cx8802_driver *drv)
522{
523 struct cx88_core *core = drv->core;
524 unsigned int i;
525
526
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
533 core->last_analog_input = core->input;
534 core->input = 0;
535 for (i = 0;
536 i < (sizeof(core->board.input) /
537 sizeof(struct cx88_input));
538 i++) {
539 if (core->board.input[i].type == CX88_VMUX_DVB) {
540 core->input = i;
541 break;
542 }
543 }
544 }
545
546 if (drv->advise_acquire) {
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 dprintk(1, "Post acquire GPIO=%x\n", cx_read(MO_GP0_IO));
554 }
555
556 return 0;
557}
558
559
560static 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 if (drv->type_id == CX88_MPEG_DVB) {
566
567
568
569
570 core->input = core->last_analog_input;
571 }
572
573 drv->advise_release(drv);
574 core->active_type_id = CX88_BOARD_NONE;
575 dprintk(1, "Post release GPIO=%x\n", cx_read(MO_GP0_IO));
576 }
577
578 return 0;
579}
580
581static int cx8802_check_driver(struct cx8802_driver *drv)
582{
583 if (!drv)
584 return -ENODEV;
585
586 if ((drv->type_id != CX88_MPEG_DVB) &&
587 (drv->type_id != CX88_MPEG_BLACKBIRD))
588 return -EINVAL;
589
590 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
591 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
592 return -EINVAL;
593
594 if ((!drv->probe) ||
595 (!drv->remove) ||
596 (!drv->advise_acquire) ||
597 (!drv->advise_release))
598 return -EINVAL;
599
600 return 0;
601}
602
603int cx8802_register_driver(struct cx8802_driver *drv)
604{
605 struct cx8802_dev *dev;
606 struct cx8802_driver *driver;
607 int err, i = 0;
608
609 pr_info("registering cx8802 driver, type: %s access: %s\n",
610 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
611 drv->hw_access == CX8802_DRVCTL_SHARED ?
612 "shared" : "exclusive");
613
614 err = cx8802_check_driver(drv);
615 if (err) {
616 pr_err("cx8802_driver is invalid\n");
617 return err;
618 }
619
620 mutex_lock(&cx8802_mutex);
621
622 list_for_each_entry(dev, &cx8802_devlist, devlist) {
623 pr_info("subsystem: %04x:%04x, board: %s [card=%d]\n",
624 dev->pci->subsystem_vendor,
625 dev->pci->subsystem_device, dev->core->board.name,
626 dev->core->boardnr);
627
628
629 driver = kzalloc(sizeof(*drv), GFP_KERNEL);
630 if (!driver) {
631 err = -ENOMEM;
632 goto out;
633 }
634
635
636 drv->core = dev->core;
637 drv->suspend = cx8802_suspend_common;
638 drv->resume = cx8802_resume_common;
639 drv->request_acquire = cx8802_request_acquire;
640 drv->request_release = cx8802_request_release;
641 memcpy(driver, drv, sizeof(*driver));
642
643 mutex_lock(&drv->core->lock);
644 err = drv->probe(driver);
645 if (err == 0) {
646 i++;
647 list_add_tail(&driver->drvlist, &dev->drvlist);
648 } else {
649 pr_err("cx8802 probe failed, err = %d\n", err);
650 }
651 mutex_unlock(&drv->core->lock);
652 }
653
654 err = i ? 0 : -ENODEV;
655out:
656 mutex_unlock(&cx8802_mutex);
657 return err;
658}
659EXPORT_SYMBOL(cx8802_register_driver);
660
661int 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 pr_info("unregistering cx8802 driver, type: %s access: %s\n",
668 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
669 drv->hw_access == CX8802_DRVCTL_SHARED ?
670 "shared" : "exclusive");
671
672 mutex_lock(&cx8802_mutex);
673
674 list_for_each_entry(dev, &cx8802_devlist, devlist) {
675 pr_info("subsystem: %04x:%04x, board: %s [card=%d]\n",
676 dev->pci->subsystem_vendor,
677 dev->pci->subsystem_device, dev->core->board.name,
678 dev->core->boardnr);
679
680 mutex_lock(&dev->core->lock);
681
682 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
683
684 if (d->type_id != drv->type_id)
685 continue;
686
687 err = d->remove(d);
688 if (err == 0) {
689 list_del(&d->drvlist);
690 kfree(d);
691 } else
692 pr_err("cx8802 driver remove failed (%d)\n",
693 err);
694 }
695
696 mutex_unlock(&dev->core->lock);
697 }
698
699 mutex_unlock(&cx8802_mutex);
700
701 return err;
702}
703EXPORT_SYMBOL(cx8802_unregister_driver);
704
705
706static 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
714 core = cx88_core_get(pci_dev);
715 if (!core)
716 return -EINVAL;
717
718 pr_info("cx2388x 8802 Driver Manager\n");
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 (!dev)
727 goto fail_core;
728 dev->pci = pci_dev;
729 dev->core = core;
730
731
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
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
755static 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 pr_warn("Trying to remove cx8802 driver while cx8802 sub-drivers still loaded?!\n");
772
773 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
774 err = drv->remove(drv);
775 if (err == 0) {
776 list_del(&drv->drvlist);
777 } else
778 pr_err("cx8802 driver remove failed (%d)\n",
779 err);
780 kfree(drv);
781 }
782 }
783
784 mutex_unlock(&dev->core->lock);
785
786
787 dev->core->dvbdev = NULL;
788
789
790 cx8802_fini_common(dev);
791 cx88_core_put(dev->core, dev->pci);
792 kfree(dev);
793}
794
795static const struct pci_device_id cx8802_pci_tbl[] = {
796 {
797 .vendor = 0x14f1,
798 .device = 0x8802,
799 .subvendor = PCI_ANY_ID,
800 .subdevice = PCI_ANY_ID,
801 }, {
802
803 }
804};
805MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
806
807static struct pci_driver cx8802_pci_driver = {
808 .name = "cx88-mpeg driver manager",
809 .id_table = cx8802_pci_tbl,
810 .probe = cx8802_probe,
811 .remove = cx8802_remove,
812};
813
814module_pci_driver(cx8802_pci_driver);
815
