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[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",
83 buf->vb.width, buf->vb.height, buf->vb.field);
84
85 /* setup fifo + format */
86 cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
87 dev->ts_packet_size, buf->risc.dma);
88
89 /* write TS length to chip */
90 cx_write(MO_TS_LNGTH, buf->vb.width);
91
92 /* FIXME: this needs a review.
93 * also: move to cx88-blackbird + cx88-dvb source files? */
94
95 dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);
96
97 if ( (core->active_type_id == CX88_MPEG_DVB) &&
98 (core->board.mpeg & CX88_MPEG_DVB) ) {
99
100 dprintk( 1, "cx8802_start_dma doing .dvb\n");
101 /* negedge driven & software reset */
102 cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
103 udelay(100);
104 cx_write(MO_PINMUX_IO, 0x00);
105 cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
106 switch (core->boardnr) {
107 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
108 case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
109 case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
110 case CX88_BOARD_PCHDTV_HD5500:
111 cx_write(TS_SOP_STAT, 1<<13);
112 break;
113 case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
114 case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
115 cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
116 udelay(100);
117 break;
118 case CX88_BOARD_HAUPPAUGE_HVR1300:
119 break;
120 default:
121 cx_write(TS_SOP_STAT, 0x00);
122 break;
123 }
124 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
125 udelay(100);
126 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
127 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
128 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
129 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
130
131 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
132 udelay(100);
133
134 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
135 cx_write(TS_VALERR_CNTRL, 0x2000);
136
137 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
138 udelay(100);
139 } else {
140 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
141 core->board.mpeg );
142 return -EINVAL;
143 }
144
145 /* reset counter */
146 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
147 q->count = 1;
148
149 /* enable irqs */
150 dprintk( 1, "setting the interrupt mask\n" );
151 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
152 cx_set(MO_TS_INTMSK, 0x1f0011);
153
154 /* start dma */
155 cx_set(MO_DEV_CNTRL2, (1<<5));
156 cx_set(MO_TS_DMACNTRL, 0x11);
157 return 0;
158 }
159
160 static int cx8802_stop_dma(struct cx8802_dev *dev)
161 {
162 struct cx88_core *core = dev->core;
163 dprintk( 1, "cx8802_stop_dma\n" );
164
165 /* stop dma */
166 cx_clear(MO_TS_DMACNTRL, 0x11);
167
168 /* disable irqs */
169 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
170 cx_clear(MO_TS_INTMSK, 0x1f0011);
171
172 /* Reset the controller */
173 cx_write(TS_GEN_CNTRL, 0xcd);
174 return 0;
175 }
176
177 static int cx8802_restart_queue(struct cx8802_dev *dev,
178 struct cx88_dmaqueue *q)
179 {
180 struct cx88_buffer *buf;
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_entry(buf, &q->active, vb.queue)
227 buf->count = q->count++;
228 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
229 return 0;
230 }
231
232 /* ------------------------------------------------------------------ */
233
234 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
235 struct cx88_buffer *buf, enum v4l2_field field)
236 {
237 int size = dev->ts_packet_size * dev->ts_packet_count;
238 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
239 int rc;
240
241 dprintk(1, "%s: %p\n", __FUNCTION__, buf);
242 if (0 != buf->vb.baddr && buf->vb.bsize < size)
243 return -EINVAL;
244
245 if (STATE_NEEDS_INIT == buf->vb.state) {
246 buf->vb.width = dev->ts_packet_size;
247 buf->vb.height = dev->ts_packet_count;
248 buf->vb.size = size;
249 buf->vb.field = field /*V4L2_FIELD_TOP*/;
250
251 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
252 goto fail;
253 cx88_risc_databuffer(dev->pci, &buf->risc,
254 dma->sglist,
255 buf->vb.width, buf->vb.height, 0);
256 }
257 buf->vb.state = STATE_PREPARED;
258 return 0;
259
260 fail:
261 cx88_free_buffer(q,buf);
262 return rc;
263 }
264
265 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
266 {
267 struct cx88_buffer *prev;
268 struct cx88_dmaqueue *cx88q = &dev->mpegq;
269
270 dprintk( 1, "cx8802_buf_queue\n" );
271 /* add jump to stopper */
272 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
273 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
274
275 if (list_empty(&cx88q->active)) {
276 dprintk( 1, "queue is empty - first active\n" );
277 list_add_tail(&buf->vb.queue,&cx88q->active);
278 cx8802_start_dma(dev, cx88q, buf);
279 buf->vb.state = STATE_ACTIVE;
280 buf->count = cx88q->count++;
281 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
282 dprintk(1,"[%p/%d] %s - first active\n",
283 buf, buf->vb.i, __FUNCTION__);
284
285 } else {
286 dprintk( 1, "queue is not empty - append to active\n" );
287 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
288 list_add_tail(&buf->vb.queue,&cx88q->active);
289 buf->vb.state = STATE_ACTIVE;
290 buf->count = cx88q->count++;
291 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
292 dprintk( 1, "[%p/%d] %s - append to active\n",
293 buf, buf->vb.i, __FUNCTION__);
294 }
295 }
296
297 /* ----------------------------------------------------------- */
298
299 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
300 {
301 struct cx88_dmaqueue *q = &dev->mpegq;
302 struct cx88_buffer *buf;
303 unsigned long flags;
304
305 spin_lock_irqsave(&dev->slock,flags);
306 while (!list_empty(&q->active)) {
307 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
308 list_del(&buf->vb.queue);
309 buf->vb.state = STATE_ERROR;
310 wake_up(&buf->vb.done);
311 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
312 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
313 }
314 if (restart)
315 {
316 dprintk(1, "restarting queue\n" );
317 cx8802_restart_queue(dev,q);
318 }
319 spin_unlock_irqrestore(&dev->slock,flags);
320 }
321
322 void cx8802_cancel_buffers(struct cx8802_dev *dev)
323 {
324 struct cx88_dmaqueue *q = &dev->mpegq;
325
326 dprintk( 1, "cx8802_cancel_buffers" );
327 del_timer_sync(&q->timeout);
328 cx8802_stop_dma(dev);
329 do_cancel_buffers(dev,"cancel",0);
330 }
331
332 static void cx8802_timeout(unsigned long data)
333 {
334 struct cx8802_dev *dev = (struct cx8802_dev*)data;
335
336 dprintk(1, "%s\n",__FUNCTION__);
337
338 if (debug)
339 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
340 cx8802_stop_dma(dev);
341 do_cancel_buffers(dev,"timeout",1);
342 }
343
344 static char *cx88_mpeg_irqs[32] = {
345 "ts_risci1", NULL, NULL, NULL,
346 "ts_risci2", NULL, NULL, NULL,
347 "ts_oflow", NULL, NULL, NULL,
348 "ts_sync", NULL, NULL, NULL,
349 "opc_err", "par_err", "rip_err", "pci_abort",
350 "ts_err?",
351 };
352
353 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
354 {
355 struct cx88_core *core = dev->core;
356 u32 status, mask, count;
357
358 dprintk( 1, "cx8802_mpeg_irq\n" );
359 status = cx_read(MO_TS_INTSTAT);
360 mask = cx_read(MO_TS_INTMSK);
361 if (0 == (status & mask))
362 return;
363
364 cx_write(MO_TS_INTSTAT, status);
365
366 if (debug || (status & mask & ~0xff))
367 cx88_print_irqbits(core->name, "irq mpeg ",
368 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
369 status, mask);
370
371 /* risc op code error */
372 if (status & (1 << 16)) {
373 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
374 cx_clear(MO_TS_DMACNTRL, 0x11);
375 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
376 }
377
378 /* risc1 y */
379 if (status & 0x01) {
380 dprintk( 1, "wake up\n" );
381 spin_lock(&dev->slock);
382 count = cx_read(MO_TS_GPCNT);
383 cx88_wakeup(dev->core, &dev->mpegq, count);
384 spin_unlock(&dev->slock);
385 }
386
387 /* risc2 y */
388 if (status & 0x10) {
389 spin_lock(&dev->slock);
390 cx8802_restart_queue(dev,&dev->mpegq);
391 spin_unlock(&dev->slock);
392 }
393
394 /* other general errors */
395 if (status & 0x1f0100) {
396 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
397 spin_lock(&dev->slock);
398 cx8802_stop_dma(dev);
399 cx8802_restart_queue(dev,&dev->mpegq);
400 spin_unlock(&dev->slock);
401 }
402 }
403
404 #define MAX_IRQ_LOOP 10
405
406 static irqreturn_t cx8802_irq(int irq, void *dev_id)
407 {
408 struct cx8802_dev *dev = dev_id;
409 struct cx88_core *core = dev->core;
410 u32 status;
411 int loop, handled = 0;
412
413 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
414 status = cx_read(MO_PCI_INTSTAT) &
415 (core->pci_irqmask | PCI_INT_TSINT);
416 if (0 == status)
417 goto out;
418 dprintk( 1, "cx8802_irq\n" );
419 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
420 dprintk( 1, " status: %d\n", status );
421 handled = 1;
422 cx_write(MO_PCI_INTSTAT, status);
423
424 if (status & core->pci_irqmask)
425 cx88_core_irq(core,status);
426 if (status & PCI_INT_TSINT)
427 cx8802_mpeg_irq(dev);
428 };
429 if (MAX_IRQ_LOOP == loop) {
430 dprintk( 0, "clearing mask\n" );
431 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
432 core->name);
433 cx_write(MO_PCI_INTMSK,0);
434 }
435
436 out:
437 return IRQ_RETVAL(handled);
438 }
439
440 /* ----------------------------------------------------------- */
441 /* exported stuff */
442
443 int cx8802_init_common(struct cx8802_dev *dev)
444 {
445 struct cx88_core *core = dev->core;
446 int err;
447
448 /* pci init */
449 if (pci_enable_device(dev->pci))
450 return -EIO;
451 pci_set_master(dev->pci);
452 if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
453 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
454 return -EIO;
455 }
456
457 pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
458 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
459 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
460 "latency: %d, mmio: 0x%llx\n", dev->core->name,
461 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
462 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
463
464 /* initialize driver struct */
465 spin_lock_init(&dev->slock);
466
467 /* init dma queue */
468 INIT_LIST_HEAD(&dev->mpegq.active);
469 INIT_LIST_HEAD(&dev->mpegq.queued);
470 dev->mpegq.timeout.function = cx8802_timeout;
471 dev->mpegq.timeout.data = (unsigned long)dev;
472 init_timer(&dev->mpegq.timeout);
473 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
474 MO_TS_DMACNTRL,0x11,0x00);
475
476 /* get irq */
477 err = request_irq(dev->pci->irq, cx8802_irq,
478 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
479 if (err < 0) {
480 printk(KERN_ERR "%s: can't get IRQ %d\n",
481 dev->core->name, dev->pci->irq);
482 return err;
483 }
484 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
485
486 /* everything worked */
487 pci_set_drvdata(dev->pci,dev);
488 return 0;
489 }
490
491 void cx8802_fini_common(struct cx8802_dev *dev)
492 {
493 dprintk( 2, "cx8802_fini_common\n" );
494 cx8802_stop_dma(dev);
495 pci_disable_device(dev->pci);
496
497 /* unregister stuff */
498 free_irq(dev->pci->irq, dev);
499 pci_set_drvdata(dev->pci, NULL);
500
501 /* free memory */
502 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
503 }
504
505 /* ----------------------------------------------------------- */
506
507 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
508 {
509 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
510 struct cx88_core *core = dev->core;
511
512 /* stop mpeg dma */
513 spin_lock(&dev->slock);
514 if (!list_empty(&dev->mpegq.active)) {
515 dprintk( 2, "suspend\n" );
516 printk("%s: suspend mpeg\n", core->name);
517 cx8802_stop_dma(dev);
518 del_timer(&dev->mpegq.timeout);
519 }
520 spin_unlock(&dev->slock);
521
522 /* FIXME -- shutdown device */
523 cx88_shutdown(dev->core);
524
525 pci_save_state(pci_dev);
526 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
527 pci_disable_device(pci_dev);
528 dev->state.disabled = 1;
529 }
530 return 0;
531 }
532
533 int cx8802_resume_common(struct pci_dev *pci_dev)
534 {
535 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
536 struct cx88_core *core = dev->core;
537 int err;
538
539 if (dev->state.disabled) {
540 err=pci_enable_device(pci_dev);
541 if (err) {
542 printk(KERN_ERR "%s: can't enable device\n",
543 dev->core->name);
544 return err;
545 }
546 dev->state.disabled = 0;
547 }
548 err=pci_set_power_state(pci_dev, PCI_D0);
549 if (err) {
550 printk(KERN_ERR "%s: can't enable device\n",
551 dev->core->name);
552 pci_disable_device(pci_dev);
553 dev->state.disabled = 1;
554
555 return err;
556 }
557 pci_restore_state(pci_dev);
558
559 /* FIXME: re-initialize hardware */
560 cx88_reset(dev->core);
561
562 /* restart video+vbi capture */
563 spin_lock(&dev->slock);
564 if (!list_empty(&dev->mpegq.active)) {
565 printk("%s: resume mpeg\n", core->name);
566 cx8802_restart_queue(dev,&dev->mpegq);
567 }
568 spin_unlock(&dev->slock);
569
570 return 0;
571 }
572
573 #if defined(CONFIG_VIDEO_CX88_BLACKBIRD) || \
574 defined(CONFIG_VIDEO_CX88_BLACKBIRD_MODULE)
575 struct cx8802_dev * cx8802_get_device(struct inode *inode)
576 {
577 int minor = iminor(inode);
578 struct cx8802_dev *dev;
579
580 list_for_each_entry(dev, &cx8802_devlist, devlist)
581 if (dev->mpeg_dev && dev->mpeg_dev->minor == minor)
582 return dev;
583
584 return NULL;
585 }
586 EXPORT_SYMBOL(cx8802_get_device);
587 #endif
588
589 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
590 {
591 struct cx8802_driver *d;
592
593 list_for_each_entry(d, &dev->drvlist, drvlist)
594 if (d->type_id == btype)
595 return d;
596
597 return NULL;
598 }
599
600 /* Driver asked for hardware access. */
601 static int cx8802_request_acquire(struct cx8802_driver *drv)
602 {
603 struct cx88_core *core = drv->core;
604
605 /* Fail a request for hardware if the device is busy. */
606 if (core->active_type_id != CX88_BOARD_NONE)
607 return -EBUSY;
608
609 if (drv->advise_acquire)
610 {
611 core->active_type_id = drv->type_id;
612 drv->advise_acquire(drv);
613
614 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
615 }
616
617 return 0;
618 }
619
620 /* Driver asked to release hardware. */
621 static int cx8802_request_release(struct cx8802_driver *drv)
622 {
623 struct cx88_core *core = drv->core;
624
625 if (drv->advise_release)
626 {
627 drv->advise_release(drv);
628 core->active_type_id = CX88_BOARD_NONE;
629 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
630 }
631
632 return 0;
633 }
634
635 static int cx8802_check_driver(struct cx8802_driver *drv)
636 {
637 if (drv == NULL)
638 return -ENODEV;
639
640 if ((drv->type_id != CX88_MPEG_DVB) &&
641 (drv->type_id != CX88_MPEG_BLACKBIRD))
642 return -EINVAL;
643
644 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
645 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
646 return -EINVAL;
647
648 if ((drv->probe == NULL) ||
649 (drv->remove == NULL) ||
650 (drv->advise_acquire == NULL) ||
651 (drv->advise_release == NULL))
652 return -EINVAL;
653
654 return 0;
655 }
656
657 int cx8802_register_driver(struct cx8802_driver *drv)
658 {
659 struct cx8802_dev *dev;
660 struct cx8802_driver *driver;
661 int err, i = 0;
662
663 printk(KERN_INFO
664 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
665 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
666 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
667
668 if ((err = cx8802_check_driver(drv)) != 0) {
669 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
670 return err;
671 }
672
673 list_for_each_entry(dev, &cx8802_devlist, devlist) {
674 printk(KERN_INFO
675 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
676 dev->core->name, dev->pci->subsystem_vendor,
677 dev->pci->subsystem_device, dev->core->board.name,
678 dev->core->boardnr);
679
680 /* Bring up a new struct for each driver instance */
681 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
682 if (driver == NULL)
683 return -ENOMEM;
684
685 /* Snapshot of the driver registration data */
686 drv->core = dev->core;
687 drv->suspend = cx8802_suspend_common;
688 drv->resume = cx8802_resume_common;
689 drv->request_acquire = cx8802_request_acquire;
690 drv->request_release = cx8802_request_release;
691 memcpy(driver, drv, sizeof(*driver));
692
693 err = drv->probe(driver);
694 if (err == 0) {
695 i++;
696 mutex_lock(&drv->core->lock);
697 list_add_tail(&driver->drvlist, &dev->drvlist);
698 mutex_unlock(&drv->core->lock);
699 } else {
700 printk(KERN_ERR
701 "%s/2: cx8802 probe failed, err = %d\n",
702 dev->core->name, err);
703 }
704
705 }
706
707 return i ? 0 : -ENODEV;
708 }
709
710 int cx8802_unregister_driver(struct cx8802_driver *drv)
711 {
712 struct cx8802_dev *dev;
713 struct cx8802_driver *d, *dtmp;
714 int err = 0;
715
716 printk(KERN_INFO
717 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
718 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
719 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
720
721 list_for_each_entry(dev, &cx8802_devlist, devlist) {
722 printk(KERN_INFO
723 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
724 dev->core->name, dev->pci->subsystem_vendor,
725 dev->pci->subsystem_device, dev->core->board.name,
726 dev->core->boardnr);
727
728 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
729 /* only unregister the correct driver type */
730 if (d->type_id != drv->type_id)
731 continue;
732
733 err = d->remove(d);
734 if (err == 0) {
735 mutex_lock(&drv->core->lock);
736 list_del(&d->drvlist);
737 mutex_unlock(&drv->core->lock);
738 kfree(d);
739 } else
740 printk(KERN_ERR "%s/2: cx8802 driver remove "
741 "failed (%d)\n", dev->core->name, err);
742 }
743
744 }
745
746 return err;
747 }
748
749 /* ----------------------------------------------------------- */
750 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
751 const struct pci_device_id *pci_id)
752 {
753 struct cx8802_dev *dev;
754 struct cx88_core *core;
755 int err;
756
757 /* general setup */
758 core = cx88_core_get(pci_dev);
759 if (NULL == core)
760 return -EINVAL;
761
762 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
763
764 err = -ENODEV;
765 if (!core->board.mpeg)
766 goto fail_core;
767
768 err = -ENOMEM;
769 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
770 if (NULL == dev)
771 goto fail_core;
772 dev->pci = pci_dev;
773 dev->core = core;
774
775 err = cx8802_init_common(dev);
776 if (err != 0)
777 goto fail_free;
778
779 INIT_LIST_HEAD(&dev->drvlist);
780 list_add_tail(&dev->devlist,&cx8802_devlist);
781
782 /* Maintain a reference so cx88-video can query the 8802 device. */
783 core->dvbdev = dev;
784
785 /* now autoload cx88-dvb or cx88-blackbird */
786 request_modules(dev);
787 return 0;
788
789 fail_free:
790 kfree(dev);
791 fail_core:
792 cx88_core_put(core,pci_dev);
793 return err;
794 }
795
796 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
797 {
798 struct cx8802_dev *dev;
799
800 dev = pci_get_drvdata(pci_dev);
801
802 dprintk( 1, "%s\n", __FUNCTION__);
803
804 if (!list_empty(&dev->drvlist)) {
805 struct cx8802_driver *drv, *tmp;
806 int err;
807
808 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
809 "while cx8802 sub-drivers still loaded?!\n",
810 dev->core->name);
811
812 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
813 err = drv->remove(drv);
814 if (err == 0) {
815 mutex_lock(&drv->core->lock);
816 list_del(&drv->drvlist);
817 mutex_unlock(&drv->core->lock);
818 } else
819 printk(KERN_ERR "%s/2: cx8802 driver remove "
820 "failed (%d)\n", dev->core->name, err);
821 kfree(drv);
822 }
823 }
824
825 /* Destroy any 8802 reference. */
826 dev->core->dvbdev = NULL;
827
828 /* common */
829 cx8802_fini_common(dev);
830 cx88_core_put(dev->core,dev->pci);
831 kfree(dev);
832 }
833
834 static struct pci_device_id cx8802_pci_tbl[] = {
835 {
836 .vendor = 0x14f1,
837 .device = 0x8802,
838 .subvendor = PCI_ANY_ID,
839 .subdevice = PCI_ANY_ID,
840 },{
841 /* --- end of list --- */
842 }
843 };
844 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
845
846 static struct pci_driver cx8802_pci_driver = {
847 .name = "cx88-mpeg driver manager",
848 .id_table = cx8802_pci_tbl,
849 .probe = cx8802_probe,
850 .remove = __devexit_p(cx8802_remove),
851 };
852
853 static int cx8802_init(void)
854 {
855 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
856 (CX88_VERSION_CODE >> 16) & 0xff,
857 (CX88_VERSION_CODE >> 8) & 0xff,
858 CX88_VERSION_CODE & 0xff);
859 #ifdef SNAPSHOT
860 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
861 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
862 #endif
863 return pci_register_driver(&cx8802_pci_driver);
864 }
865
866 static void cx8802_fini(void)
867 {
868 pci_unregister_driver(&cx8802_pci_driver);
869 }
870
871 module_init(cx8802_init);
872 module_exit(cx8802_fini);
873 EXPORT_SYMBOL(cx8802_buf_prepare);
874 EXPORT_SYMBOL(cx8802_buf_queue);
875 EXPORT_SYMBOL(cx8802_cancel_buffers);
876
877 EXPORT_SYMBOL(cx8802_init_common);
878 EXPORT_SYMBOL(cx8802_fini_common);
879
880 EXPORT_SYMBOL(cx8802_register_driver);
881 EXPORT_SYMBOL(cx8802_unregister_driver);
882 EXPORT_SYMBOL(cx8802_get_driver);
883 /* ----------------------------------------------------------- */
884 /*
885 * Local variables:
886 * c-basic-offset: 8
887 * End:
888 * 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
889 */
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