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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / drivers / media / pci / cx88 / cx88-mpeg.c
blobf34c229f9b374d3dedd424bb54bc2119b0ee0607
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->alloc_ctx = vb2_dma_sg_init_ctx(&pci_dev->dev);
730 if (IS_ERR(dev->alloc_ctx)) {
731 err = PTR_ERR(dev->alloc_ctx);
732 goto fail_dev;
733 }
734 dev->core = core;
735
736 /* Maintain a reference so cx88-video can query the 8802 device. */
737 core->dvbdev = dev;
738
739 err = cx8802_init_common(dev);
740 if (err != 0)
741 goto fail_free;
742
743 INIT_LIST_HEAD(&dev->drvlist);
744 mutex_lock(&cx8802_mutex);
745 list_add_tail(&dev->devlist,&cx8802_devlist);
746 mutex_unlock(&cx8802_mutex);
747
748 /* now autoload cx88-dvb or cx88-blackbird */
749 request_modules(dev);
750 return 0;
751
752 fail_free:
753 vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
754 fail_dev:
755 kfree(dev);
756 fail_core:
757 core->dvbdev = NULL;
758 cx88_core_put(core,pci_dev);
759 return err;
760 }
761
762 static void cx8802_remove(struct pci_dev *pci_dev)
763 {
764 struct cx8802_dev *dev;
765
766 dev = pci_get_drvdata(pci_dev);
767
768 dprintk( 1, "%s\n", __func__);
769
770 flush_request_modules(dev);
771
772 mutex_lock(&dev->core->lock);
773
774 if (!list_empty(&dev->drvlist)) {
775 struct cx8802_driver *drv, *tmp;
776 int err;
777
778 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
779 "while cx8802 sub-drivers still loaded?!\n",
780 dev->core->name);
781
782 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
783 err = drv->remove(drv);
784 if (err == 0) {
785 list_del(&drv->drvlist);
786 } else
787 printk(KERN_ERR "%s/2: cx8802 driver remove "
788 "failed (%d)\n", dev->core->name, err);
789 kfree(drv);
790 }
791 }
792
793 mutex_unlock(&dev->core->lock);
794
795 /* Destroy any 8802 reference. */
796 dev->core->dvbdev = NULL;
797
798 /* common */
799 cx8802_fini_common(dev);
800 cx88_core_put(dev->core,dev->pci);
801 vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
802 kfree(dev);
803 }
804
805 static const struct pci_device_id cx8802_pci_tbl[] = {
806 {
807 .vendor = 0x14f1,
808 .device = 0x8802,
809 .subvendor = PCI_ANY_ID,
810 .subdevice = PCI_ANY_ID,
811 },{
812 /* --- end of list --- */
813 }
814 };
815 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
816
817 static struct pci_driver cx8802_pci_driver = {
818 .name = "cx88-mpeg driver manager",
819 .id_table = cx8802_pci_tbl,
820 .probe = cx8802_probe,
821 .remove = cx8802_remove,
822 };
823
824 module_pci_driver(cx8802_pci_driver);
825
826 EXPORT_SYMBOL(cx8802_buf_prepare);
827 EXPORT_SYMBOL(cx8802_buf_queue);
828 EXPORT_SYMBOL(cx8802_cancel_buffers);
829 EXPORT_SYMBOL(cx8802_start_dma);
830
831 EXPORT_SYMBOL(cx8802_register_driver);
832 EXPORT_SYMBOL(cx8802_unregister_driver);
833 EXPORT_SYMBOL(cx8802_get_driver);
Linux with added FPC-III support