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Merge branch 'locks' of git://linux-nfs.org/~bfields/linux
[mirror_ubuntu-bionic-kernel.git] / drivers / media / video / cx88 / cx88-mpeg.c
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.8m.com>
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/init.h>
27 #include <linux/device.h>
28 #include <linux/dma-mapping.h>
29 #include <linux/interrupt.h>
30 #include <asm/delay.h>
31
32 #include "cx88.h"
33
34 /* ------------------------------------------------------------------ */
35
36 MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
37 MODULE_AUTHOR("Jelle Foks <jelle@foks.8m.com>");
38 MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
39 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
40 MODULE_LICENSE("GPL");
41
42 static unsigned int debug = 0;
43 module_param(debug,int,0644);
44 MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");
45
46 #define dprintk(level,fmt, arg...) if (debug >= level) \
47 printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)
48
49 #define mpeg_dbg(level,fmt, arg...) if (debug >= level) \
50 printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)
51
52 #if defined(CONFIG_MODULES) && defined(MODULE)
53 static void request_module_async(struct work_struct *work)
54 {
55 struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);
56
57 if (dev->core->board.mpeg & CX88_MPEG_DVB)
58 request_module("cx88-dvb");
59 if (dev->core->board.mpeg & CX88_MPEG_BLACKBIRD)
60 request_module("cx88-blackbird");
61 }
62
63 static void request_modules(struct cx8802_dev *dev)
64 {
65 INIT_WORK(&dev->request_module_wk, request_module_async);
66 schedule_work(&dev->request_module_wk);
67 }
68 #else
69 #define request_modules(dev)
70 #endif /* CONFIG_MODULES */
71
72
73 static LIST_HEAD(cx8802_devlist);
74 /* ------------------------------------------------------------------ */
75
76 static int cx8802_start_dma(struct cx8802_dev *dev,
77 struct cx88_dmaqueue *q,
78 struct cx88_buffer *buf)
79 {
80 struct cx88_core *core = dev->core;
81
82 dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n", dev->width, dev->height, buf->vb.field);
83
84 /* setup fifo + format */
85 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
86 dev->ts_packet_size, buf->risc.dma);
87
88 /* write TS length to chip */
89 cx_write(MO_TS_LNGTH, buf->vb.width);
90
91 /* FIXME: this needs a review.
92 * also: move to cx88-blackbird + cx88-dvb source files? */
93
94 dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
95
96 if ( (core->active_type_id == CX88_MPEG_DVB) &&
97 (core->board.mpeg & CX88_MPEG_DVB) ) {
98
99 dprintk( 1, "cx8802_start_dma doing .dvb\n");
100 /* negedge driven & software reset */
101 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
102 udelay(100);
103 cx_write(MO_PINMUX_IO, 0x00);
104 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
105 switch (core->boardnr) {
106 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
107 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
108 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
109 case CX88_BOARD_PCHDTV_HD5500:
110 cx_write(TS_SOP_STAT, 1<<13);
111 break;
112 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
113 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
114 cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
115 udelay(100);
116 break;
117 case CX88_BOARD_HAUPPAUGE_HVR1300:
118 break;
119 default:
120 cx_write(TS_SOP_STAT, 0x00);
121 break;
122 }
123 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
124 udelay(100);
125 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
126 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
127 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
128 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
129
130 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
131 udelay(100);
132
133 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
134 cx_write(TS_VALERR_CNTRL, 0x2000);
135
136 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
137 udelay(100);
138 } else {
139 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
140 core->board.mpeg );
141 return -EINVAL;
142 }
143
144 /* reset counter */
145 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
146 q->count = 1;
147
148 /* enable irqs */
149 dprintk( 1, "setting the interrupt mask\n" );
150 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
151 cx_set(MO_TS_INTMSK, 0x1f0011);
152
153 /* start dma */
154 cx_set(MO_DEV_CNTRL2, (1<<5));
155 cx_set(MO_TS_DMACNTRL, 0x11);
156 return 0;
157 }
158
159 static int cx8802_stop_dma(struct cx8802_dev *dev)
160 {
161 struct cx88_core *core = dev->core;
162 dprintk( 1, "cx8802_stop_dma\n" );
163
164 /* stop dma */
165 cx_clear(MO_TS_DMACNTRL, 0x11);
166
167 /* disable irqs */
168 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
169 cx_clear(MO_TS_INTMSK, 0x1f0011);
170
171 /* Reset the controller */
172 cx_write(TS_GEN_CNTRL, 0xcd);
173 return 0;
174 }
175
176 static int cx8802_restart_queue(struct cx8802_dev *dev,
177 struct cx88_dmaqueue *q)
178 {
179 struct cx88_buffer *buf;
180 struct list_head *item;
181
182 dprintk( 1, "cx8802_restart_queue\n" );
183 if (list_empty(&q->active))
184 {
185 struct cx88_buffer *prev;
186 prev = NULL;
187
188 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
189
190 for (;;) {
191 if (list_empty(&q->queued))
192 return 0;
193 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
194 if (NULL == prev) {
195 list_del(&buf->vb.queue);
196 list_add_tail(&buf->vb.queue,&q->active);
197 cx8802_start_dma(dev, q, buf);
198 buf->vb.state = STATE_ACTIVE;
199 buf->count = q->count++;
200 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
201 dprintk(1,"[%p/%d] restart_queue - first active\n",
202 buf,buf->vb.i);
203
204 } else if (prev->vb.width == buf->vb.width &&
205 prev->vb.height == buf->vb.height &&
206 prev->fmt == buf->fmt) {
207 list_del(&buf->vb.queue);
208 list_add_tail(&buf->vb.queue,&q->active);
209 buf->vb.state = STATE_ACTIVE;
210 buf->count = q->count++;
211 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
212 dprintk(1,"[%p/%d] restart_queue - move to active\n",
213 buf,buf->vb.i);
214 } else {
215 return 0;
216 }
217 prev = buf;
218 }
219 return 0;
220 }
221
222 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
223 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
224 buf, buf->vb.i);
225 cx8802_start_dma(dev, q, buf);
226 list_for_each(item,&q->active) {
227 buf = list_entry(item, struct cx88_buffer, vb.queue);
228 buf->count = q->count++;
229 }
230 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
231 return 0;
232 }
233
234 /* ------------------------------------------------------------------ */
235
236 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
237 struct cx88_buffer *buf, enum v4l2_field field)
238 {
239 int size = dev->ts_packet_size * dev->ts_packet_count;
240 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
241 int rc;
242
243 dprintk(1, "%s: %p\n", __FUNCTION__, buf);
244 if (0 != buf->vb.baddr && buf->vb.bsize < size)
245 return -EINVAL;
246
247 if (STATE_NEEDS_INIT == buf->vb.state) {
248 buf->vb.width = dev->ts_packet_size;
249 buf->vb.height = dev->ts_packet_count;
250 buf->vb.size = size;
251 buf->vb.field = field /*V4L2_FIELD_TOP*/;
252
253 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
254 goto fail;
255 cx88_risc_databuffer(dev->pci, &buf->risc,
256 dma->sglist,
257 buf->vb.width, buf->vb.height, 0);
258 }
259 buf->vb.state = STATE_PREPARED;
260 return 0;
261
262 fail:
263 cx88_free_buffer(q,buf);
264 return rc;
265 }
266
267 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
268 {
269 struct cx88_buffer *prev;
270 struct cx88_dmaqueue *cx88q = &dev->mpegq;
271
272 dprintk( 1, "cx8802_buf_queue\n" );
273 /* add jump to stopper */
274 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
275 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
276
277 if (list_empty(&cx88q->active)) {
278 dprintk( 1, "queue is empty - first active\n" );
279 list_add_tail(&buf->vb.queue,&cx88q->active);
280 cx8802_start_dma(dev, cx88q, buf);
281 buf->vb.state = STATE_ACTIVE;
282 buf->count = cx88q->count++;
283 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
284 dprintk(1,"[%p/%d] %s - first active\n",
285 buf, buf->vb.i, __FUNCTION__);
286
287 } else {
288 dprintk( 1, "queue is not empty - append to active\n" );
289 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
290 list_add_tail(&buf->vb.queue,&cx88q->active);
291 buf->vb.state = STATE_ACTIVE;
292 buf->count = cx88q->count++;
293 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
294 dprintk( 1, "[%p/%d] %s - append to active\n",
295 buf, buf->vb.i, __FUNCTION__);
296 }
297 }
298
299 /* ----------------------------------------------------------- */
300
301 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
302 {
303 struct cx88_dmaqueue *q = &dev->mpegq;
304 struct cx88_buffer *buf;
305 unsigned long flags;
306
307 spin_lock_irqsave(&dev->slock,flags);
308 while (!list_empty(&q->active)) {
309 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
310 list_del(&buf->vb.queue);
311 buf->vb.state = STATE_ERROR;
312 wake_up(&buf->vb.done);
313 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
314 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
315 }
316 if (restart)
317 {
318 dprintk(1, "restarting queue\n" );
319 cx8802_restart_queue(dev,q);
320 }
321 spin_unlock_irqrestore(&dev->slock,flags);
322 }
323
324 void cx8802_cancel_buffers(struct cx8802_dev *dev)
325 {
326 struct cx88_dmaqueue *q = &dev->mpegq;
327
328 dprintk( 1, "cx8802_cancel_buffers" );
329 del_timer_sync(&q->timeout);
330 cx8802_stop_dma(dev);
331 do_cancel_buffers(dev,"cancel",0);
332 }
333
334 static void cx8802_timeout(unsigned long data)
335 {
336 struct cx8802_dev *dev = (struct cx8802_dev*)data;
337
338 dprintk(1, "%s\n",__FUNCTION__);
339
340 if (debug)
341 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
342 cx8802_stop_dma(dev);
343 do_cancel_buffers(dev,"timeout",1);
344 }
345
346 static char *cx88_mpeg_irqs[32] = {
347 "ts_risci1", NULL, NULL, NULL,
348 "ts_risci2", NULL, NULL, NULL,
349 "ts_oflow", NULL, NULL, NULL,
350 "ts_sync", NULL, NULL, NULL,
351 "opc_err", "par_err", "rip_err", "pci_abort",
352 "ts_err?",
353 };
354
355 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
356 {
357 struct cx88_core *core = dev->core;
358 u32 status, mask, count;
359
360 dprintk( 1, "cx8802_mpeg_irq\n" );
361 status = cx_read(MO_TS_INTSTAT);
362 mask = cx_read(MO_TS_INTMSK);
363 if (0 == (status & mask))
364 return;
365
366 cx_write(MO_TS_INTSTAT, status);
367
368 if (debug || (status & mask & ~0xff))
369 cx88_print_irqbits(core->name, "irq mpeg ",
370 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
371 status, mask);
372
373 /* risc op code error */
374 if (status & (1 << 16)) {
375 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
376 cx_clear(MO_TS_DMACNTRL, 0x11);
377 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
378 }
379
380 /* risc1 y */
381 if (status & 0x01) {
382 dprintk( 1, "wake up\n" );
383 spin_lock(&dev->slock);
384 count = cx_read(MO_TS_GPCNT);
385 cx88_wakeup(dev->core, &dev->mpegq, count);
386 spin_unlock(&dev->slock);
387 }
388
389 /* risc2 y */
390 if (status & 0x10) {
391 spin_lock(&dev->slock);
392 cx8802_restart_queue(dev,&dev->mpegq);
393 spin_unlock(&dev->slock);
394 }
395
396 /* other general errors */
397 if (status & 0x1f0100) {
398 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
399 spin_lock(&dev->slock);
400 cx8802_stop_dma(dev);
401 cx8802_restart_queue(dev,&dev->mpegq);
402 spin_unlock(&dev->slock);
403 }
404 }
405
406 #define MAX_IRQ_LOOP 10
407
408 static irqreturn_t cx8802_irq(int irq, void *dev_id)
409 {
410 struct cx8802_dev *dev = dev_id;
411 struct cx88_core *core = dev->core;
412 u32 status;
413 int loop, handled = 0;
414
415 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
416 status = cx_read(MO_PCI_INTSTAT) &
417 (core->pci_irqmask | PCI_INT_TSINT);
418 if (0 == status)
419 goto out;
420 dprintk( 1, "cx8802_irq\n" );
421 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
422 dprintk( 1, " status: %d\n", status );
423 handled = 1;
424 cx_write(MO_PCI_INTSTAT, status);
425
426 if (status & core->pci_irqmask)
427 cx88_core_irq(core,status);
428 if (status & PCI_INT_TSINT)
429 cx8802_mpeg_irq(dev);
430 };
431 if (MAX_IRQ_LOOP == loop) {
432 dprintk( 0, "clearing mask\n" );
433 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
434 core->name);
435 cx_write(MO_PCI_INTMSK,0);
436 }
437
438 out:
439 return IRQ_RETVAL(handled);
440 }
441
442 /* ----------------------------------------------------------- */
443 /* exported stuff */
444
445 int cx8802_init_common(struct cx8802_dev *dev)
446 {
447 struct cx88_core *core = dev->core;
448 int err;
449
450 /* pci init */
451 if (pci_enable_device(dev->pci))
452 return -EIO;
453 pci_set_master(dev->pci);
454 if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
455 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
456 return -EIO;
457 }
458
459 pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
460 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
461 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
462 "latency: %d, mmio: 0x%llx\n", dev->core->name,
463 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
464 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
465
466 /* initialize driver struct */
467 spin_lock_init(&dev->slock);
468
469 /* init dma queue */
470 INIT_LIST_HEAD(&dev->mpegq.active);
471 INIT_LIST_HEAD(&dev->mpegq.queued);
472 dev->mpegq.timeout.function = cx8802_timeout;
473 dev->mpegq.timeout.data = (unsigned long)dev;
474 init_timer(&dev->mpegq.timeout);
475 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
476 MO_TS_DMACNTRL,0x11,0x00);
477
478 /* get irq */
479 err = request_irq(dev->pci->irq, cx8802_irq,
480 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
481 if (err < 0) {
482 printk(KERN_ERR "%s: can't get IRQ %d\n",
483 dev->core->name, dev->pci->irq);
484 return err;
485 }
486 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
487
488 /* everything worked */
489 pci_set_drvdata(dev->pci,dev);
490 return 0;
491 }
492
493 void cx8802_fini_common(struct cx8802_dev *dev)
494 {
495 dprintk( 2, "cx8802_fini_common\n" );
496 cx8802_stop_dma(dev);
497 pci_disable_device(dev->pci);
498
499 /* unregister stuff */
500 free_irq(dev->pci->irq, dev);
501 pci_set_drvdata(dev->pci, NULL);
502
503 /* free memory */
504 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
505 }
506
507 /* ----------------------------------------------------------- */
508
509 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
510 {
511 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
512 struct cx88_core *core = dev->core;
513
514 /* stop mpeg dma */
515 spin_lock(&dev->slock);
516 if (!list_empty(&dev->mpegq.active)) {
517 dprintk( 2, "suspend\n" );
518 printk("%s: suspend mpeg\n", core->name);
519 cx8802_stop_dma(dev);
520 del_timer(&dev->mpegq.timeout);
521 }
522 spin_unlock(&dev->slock);
523
524 /* FIXME -- shutdown device */
525 cx88_shutdown(dev->core);
526
527 pci_save_state(pci_dev);
528 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
529 pci_disable_device(pci_dev);
530 dev->state.disabled = 1;
531 }
532 return 0;
533 }
534
535 int cx8802_resume_common(struct pci_dev *pci_dev)
536 {
537 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
538 struct cx88_core *core = dev->core;
539 int err;
540
541 if (dev->state.disabled) {
542 err=pci_enable_device(pci_dev);
543 if (err) {
544 printk(KERN_ERR "%s: can't enable device\n",
545 dev->core->name);
546 return err;
547 }
548 dev->state.disabled = 0;
549 }
550 err=pci_set_power_state(pci_dev, PCI_D0);
551 if (err) {
552 printk(KERN_ERR "%s: can't enable device\n",
553 dev->core->name);
554 pci_disable_device(pci_dev);
555 dev->state.disabled = 1;
556
557 return err;
558 }
559 pci_restore_state(pci_dev);
560
561 /* FIXME: re-initialize hardware */
562 cx88_reset(dev->core);
563
564 /* restart video+vbi capture */
565 spin_lock(&dev->slock);
566 if (!list_empty(&dev->mpegq.active)) {
567 printk("%s: resume mpeg\n", core->name);
568 cx8802_restart_queue(dev,&dev->mpegq);
569 }
570 spin_unlock(&dev->slock);
571
572 return 0;
573 }
574
575 struct cx8802_dev * cx8802_get_device(struct inode *inode)
576 {
577 int minor = iminor(inode);
578 struct cx8802_dev *h = NULL;
579 struct list_head *list;
580
581 list_for_each(list,&cx8802_devlist) {
582 h = list_entry(list, struct cx8802_dev, devlist);
583 if (h->mpeg_dev && h->mpeg_dev->minor == minor)
584 return h;
585 }
586
587 return NULL;
588 }
589
590 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
591 {
592 struct cx8802_dev *h = NULL;
593 struct cx8802_driver *d = NULL;
594 struct list_head *list;
595 struct list_head *list2;
596
597 list_for_each(list,&cx8802_devlist) {
598 h = list_entry(list, struct cx8802_dev, devlist);
599 if (h != dev)
600 continue;
601
602 list_for_each(list2, &h->drvlist.devlist) {
603 d = list_entry(list2, struct cx8802_driver, devlist);
604
605 /* only unregister the correct driver type */
606 if (d->type_id == btype) {
607 return d;
608 }
609 }
610 }
611
612 return NULL;
613 }
614
615 /* Driver asked for hardware access. */
616 static int cx8802_request_acquire(struct cx8802_driver *drv)
617 {
618 struct cx88_core *core = drv->core;
619
620 /* Fail a request for hardware if the device is busy. */
621 if (core->active_type_id != CX88_BOARD_NONE)
622 return -EBUSY;
623
624 if (drv->advise_acquire)
625 {
626 core->active_type_id = drv->type_id;
627 drv->advise_acquire(drv);
628
629 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
630 }
631
632 return 0;
633 }
634
635 /* Driver asked to release hardware. */
636 static int cx8802_request_release(struct cx8802_driver *drv)
637 {
638 struct cx88_core *core = drv->core;
639
640 if (drv->advise_release)
641 {
642 drv->advise_release(drv);
643 core->active_type_id = CX88_BOARD_NONE;
644 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
645 }
646
647 return 0;
648 }
649
650 static int cx8802_check_driver(struct cx8802_driver *drv)
651 {
652 if (drv == NULL)
653 return -ENODEV;
654
655 if ((drv->type_id != CX88_MPEG_DVB) &&
656 (drv->type_id != CX88_MPEG_BLACKBIRD))
657 return -EINVAL;
658
659 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
660 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
661 return -EINVAL;
662
663 if ((drv->probe == NULL) ||
664 (drv->remove == NULL) ||
665 (drv->advise_acquire == NULL) ||
666 (drv->advise_release == NULL))
667 return -EINVAL;
668
669 return 0;
670 }
671
672 int cx8802_register_driver(struct cx8802_driver *drv)
673 {
674 struct cx8802_dev *h;
675 struct cx8802_driver *driver;
676 struct list_head *list;
677 int err = 0, i = 0;
678
679 printk(KERN_INFO
680 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
681 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
682 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
683
684 if ((err = cx8802_check_driver(drv)) != 0) {
685 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
686 return err;
687 }
688
689 list_for_each(list,&cx8802_devlist) {
690 h = list_entry(list, struct cx8802_dev, devlist);
691
692 printk(KERN_INFO
693 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
694 h->core->name, h->pci->subsystem_vendor,
695 h->pci->subsystem_device, h->core->board.name,
696 h->core->boardnr);
697
698 /* Bring up a new struct for each driver instance */
699 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
700 if (driver == NULL)
701 return -ENOMEM;
702
703 /* Snapshot of the driver registration data */
704 drv->core = h->core;
705 drv->suspend = cx8802_suspend_common;
706 drv->resume = cx8802_resume_common;
707 drv->request_acquire = cx8802_request_acquire;
708 drv->request_release = cx8802_request_release;
709 memcpy(driver, drv, sizeof(*driver));
710
711 err = drv->probe(driver);
712 if (err == 0) {
713 i++;
714 mutex_lock(&drv->core->lock);
715 list_add_tail(&driver->devlist,&h->drvlist.devlist);
716 mutex_unlock(&drv->core->lock);
717 } else {
718 printk(KERN_ERR
719 "%s/2: cx8802 probe failed, err = %d\n",
720 h->core->name, err);
721 }
722
723 }
724 if (i == 0)
725 err = -ENODEV;
726 else
727 err = 0;
728
729 return err;
730 }
731
732 int cx8802_unregister_driver(struct cx8802_driver *drv)
733 {
734 struct cx8802_dev *h;
735 struct cx8802_driver *d;
736 struct list_head *list;
737 struct list_head *list2, *q;
738 int err = 0, i = 0;
739
740 printk(KERN_INFO
741 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
742 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
743 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
744
745 list_for_each(list,&cx8802_devlist) {
746 i++;
747 h = list_entry(list, struct cx8802_dev, devlist);
748
749 printk(KERN_INFO
750 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
751 h->core->name, h->pci->subsystem_vendor,
752 h->pci->subsystem_device, h->core->board.name,
753 h->core->boardnr);
754
755 list_for_each_safe(list2, q, &h->drvlist.devlist) {
756 d = list_entry(list2, struct cx8802_driver, devlist);
757
758 /* only unregister the correct driver type */
759 if (d->type_id != drv->type_id)
760 continue;
761
762 err = d->remove(d);
763 if (err == 0) {
764 mutex_lock(&drv->core->lock);
765 list_del(list2);
766 mutex_unlock(&drv->core->lock);
767 } else
768 printk(KERN_ERR "%s/2: cx8802 driver remove "
769 "failed (%d)\n", h->core->name, err);
770
771 }
772
773 }
774
775 return err;
776 }
777
778 /* ----------------------------------------------------------- */
779 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
780 const struct pci_device_id *pci_id)
781 {
782 struct cx8802_dev *dev;
783 struct cx88_core *core;
784 int err;
785
786 /* general setup */
787 core = cx88_core_get(pci_dev);
788 if (NULL == core)
789 return -EINVAL;
790
791 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
792
793 err = -ENODEV;
794 if (!core->board.mpeg)
795 goto fail_core;
796
797 err = -ENOMEM;
798 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
799 if (NULL == dev)
800 goto fail_core;
801 dev->pci = pci_dev;
802 dev->core = core;
803
804 err = cx8802_init_common(dev);
805 if (err != 0)
806 goto fail_free;
807
808 INIT_LIST_HEAD(&dev->drvlist.devlist);
809 list_add_tail(&dev->devlist,&cx8802_devlist);
810
811 /* Maintain a reference so cx88-video can query the 8802 device. */
812 core->dvbdev = dev;
813
814 /* now autoload cx88-dvb or cx88-blackbird */
815 request_modules(dev);
816 return 0;
817
818 fail_free:
819 kfree(dev);
820 fail_core:
821 cx88_core_put(core,pci_dev);
822 return err;
823 }
824
825 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
826 {
827 struct cx8802_dev *dev;
828 struct cx8802_driver *h;
829 struct list_head *list;
830
831 dev = pci_get_drvdata(pci_dev);
832
833 dprintk( 1, "%s\n", __FUNCTION__);
834
835 list_for_each(list,&dev->drvlist.devlist) {
836 h = list_entry(list, struct cx8802_driver, devlist);
837 dprintk( 1, " ->driver\n");
838 if (h->remove == NULL) {
839 printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
840 continue;
841 }
842 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
843 cx8802_unregister_driver(h);
844 list_del(&dev->drvlist.devlist);
845 }
846
847 /* Destroy any 8802 reference. */
848 dev->core->dvbdev = NULL;
849
850 /* common */
851 cx8802_fini_common(dev);
852 cx88_core_put(dev->core,dev->pci);
853 kfree(dev);
854 }
855
856 static struct pci_device_id cx8802_pci_tbl[] = {
857 {
858 .vendor = 0x14f1,
859 .device = 0x8802,
860 .subvendor = PCI_ANY_ID,
861 .subdevice = PCI_ANY_ID,
862 },{
863 /* --- end of list --- */
864 }
865 };
866 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
867
868 static struct pci_driver cx8802_pci_driver = {
869 .name = "cx88-mpeg driver manager",
870 .id_table = cx8802_pci_tbl,
871 .probe = cx8802_probe,
872 .remove = __devexit_p(cx8802_remove),
873 };
874
875 static int cx8802_init(void)
876 {
877 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
878 (CX88_VERSION_CODE >> 16) & 0xff,
879 (CX88_VERSION_CODE >> 8) & 0xff,
880 CX88_VERSION_CODE & 0xff);
881 #ifdef SNAPSHOT
882 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
883 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
884 #endif
885 return pci_register_driver(&cx8802_pci_driver);
886 }
887
888 static void cx8802_fini(void)
889 {
890 pci_unregister_driver(&cx8802_pci_driver);
891 }
892
893 module_init(cx8802_init);
894 module_exit(cx8802_fini);
895 EXPORT_SYMBOL(cx8802_buf_prepare);
896 EXPORT_SYMBOL(cx8802_buf_queue);
897 EXPORT_SYMBOL(cx8802_cancel_buffers);
898
899 EXPORT_SYMBOL(cx8802_init_common);
900 EXPORT_SYMBOL(cx8802_fini_common);
901
902 EXPORT_SYMBOL(cx8802_register_driver);
903 EXPORT_SYMBOL(cx8802_unregister_driver);
904 EXPORT_SYMBOL(cx8802_get_device);
905 EXPORT_SYMBOL(cx8802_get_driver);
906 /* ----------------------------------------------------------- */
907 /*
908 * Local variables:
909 * c-basic-offset: 8
910 * End:
911 * 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
912 */
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