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V4L/DVB (7043): New card supported(partially): Pinnacle 800i
[deliverable/linux.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 case CX88_BOARD_PINNACLE_PCTV_HD_800i:
121 /* Enable MPEG parallel port */
122 cx_write(MO_PINMUX_IO, 0x80);
123 udelay(100);
124 break;
125 default:
126 cx_write(TS_SOP_STAT, 0x00);
127 break;
128 }
129 cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
130 udelay(100);
131 } else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
132 (core->board.mpeg & CX88_MPEG_BLACKBIRD) ) {
133 dprintk( 1, "cx8802_start_dma doing .blackbird\n");
134 cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */
135
136 cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
137 udelay(100);
138
139 cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
140 cx_write(TS_VALERR_CNTRL, 0x2000);
141
142 cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
143 udelay(100);
144 } else {
145 printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
146 core->board.mpeg );
147 return -EINVAL;
148 }
149
150 /* reset counter */
151 cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
152 q->count = 1;
153
154 /* enable irqs */
155 dprintk( 1, "setting the interrupt mask\n" );
156 cx_set(MO_PCI_INTMSK, core->pci_irqmask | PCI_INT_TSINT);
157 cx_set(MO_TS_INTMSK, 0x1f0011);
158
159 /* start dma */
160 cx_set(MO_DEV_CNTRL2, (1<<5));
161 cx_set(MO_TS_DMACNTRL, 0x11);
162 return 0;
163 }
164
165 static int cx8802_stop_dma(struct cx8802_dev *dev)
166 {
167 struct cx88_core *core = dev->core;
168 dprintk( 1, "cx8802_stop_dma\n" );
169
170 /* stop dma */
171 cx_clear(MO_TS_DMACNTRL, 0x11);
172
173 /* disable irqs */
174 cx_clear(MO_PCI_INTMSK, PCI_INT_TSINT);
175 cx_clear(MO_TS_INTMSK, 0x1f0011);
176
177 /* Reset the controller */
178 cx_write(TS_GEN_CNTRL, 0xcd);
179 return 0;
180 }
181
182 static int cx8802_restart_queue(struct cx8802_dev *dev,
183 struct cx88_dmaqueue *q)
184 {
185 struct cx88_buffer *buf;
186
187 dprintk( 1, "cx8802_restart_queue\n" );
188 if (list_empty(&q->active))
189 {
190 struct cx88_buffer *prev;
191 prev = NULL;
192
193 dprintk(1, "cx8802_restart_queue: queue is empty\n" );
194
195 for (;;) {
196 if (list_empty(&q->queued))
197 return 0;
198 buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
199 if (NULL == prev) {
200 list_del(&buf->vb.queue);
201 list_add_tail(&buf->vb.queue,&q->active);
202 cx8802_start_dma(dev, q, buf);
203 buf->vb.state = VIDEOBUF_ACTIVE;
204 buf->count = q->count++;
205 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
206 dprintk(1,"[%p/%d] restart_queue - first active\n",
207 buf,buf->vb.i);
208
209 } else if (prev->vb.width == buf->vb.width &&
210 prev->vb.height == buf->vb.height &&
211 prev->fmt == buf->fmt) {
212 list_del(&buf->vb.queue);
213 list_add_tail(&buf->vb.queue,&q->active);
214 buf->vb.state = VIDEOBUF_ACTIVE;
215 buf->count = q->count++;
216 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
217 dprintk(1,"[%p/%d] restart_queue - move to active\n",
218 buf,buf->vb.i);
219 } else {
220 return 0;
221 }
222 prev = buf;
223 }
224 return 0;
225 }
226
227 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
228 dprintk(2,"restart_queue [%p/%d]: restart dma\n",
229 buf, buf->vb.i);
230 cx8802_start_dma(dev, q, buf);
231 list_for_each_entry(buf, &q->active, vb.queue)
232 buf->count = q->count++;
233 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
234 return 0;
235 }
236
237 /* ------------------------------------------------------------------ */
238
239 int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
240 struct cx88_buffer *buf, enum v4l2_field field)
241 {
242 int size = dev->ts_packet_size * dev->ts_packet_count;
243 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
244 int rc;
245
246 dprintk(1, "%s: %p\n", __FUNCTION__, buf);
247 if (0 != buf->vb.baddr && buf->vb.bsize < size)
248 return -EINVAL;
249
250 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
251 buf->vb.width = dev->ts_packet_size;
252 buf->vb.height = dev->ts_packet_count;
253 buf->vb.size = size;
254 buf->vb.field = field /*V4L2_FIELD_TOP*/;
255
256 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
257 goto fail;
258 cx88_risc_databuffer(dev->pci, &buf->risc,
259 dma->sglist,
260 buf->vb.width, buf->vb.height, 0);
261 }
262 buf->vb.state = VIDEOBUF_PREPARED;
263 return 0;
264
265 fail:
266 cx88_free_buffer(q,buf);
267 return rc;
268 }
269
270 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
271 {
272 struct cx88_buffer *prev;
273 struct cx88_dmaqueue *cx88q = &dev->mpegq;
274
275 dprintk( 1, "cx8802_buf_queue\n" );
276 /* add jump to stopper */
277 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
278 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
279
280 if (list_empty(&cx88q->active)) {
281 dprintk( 1, "queue is empty - first active\n" );
282 list_add_tail(&buf->vb.queue,&cx88q->active);
283 cx8802_start_dma(dev, cx88q, buf);
284 buf->vb.state = VIDEOBUF_ACTIVE;
285 buf->count = cx88q->count++;
286 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
287 dprintk(1,"[%p/%d] %s - first active\n",
288 buf, buf->vb.i, __FUNCTION__);
289
290 } else {
291 dprintk( 1, "queue is not empty - append to active\n" );
292 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
293 list_add_tail(&buf->vb.queue,&cx88q->active);
294 buf->vb.state = VIDEOBUF_ACTIVE;
295 buf->count = cx88q->count++;
296 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
297 dprintk( 1, "[%p/%d] %s - append to active\n",
298 buf, buf->vb.i, __FUNCTION__);
299 }
300 }
301
302 /* ----------------------------------------------------------- */
303
304 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
305 {
306 struct cx88_dmaqueue *q = &dev->mpegq;
307 struct cx88_buffer *buf;
308 unsigned long flags;
309
310 spin_lock_irqsave(&dev->slock,flags);
311 while (!list_empty(&q->active)) {
312 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
313 list_del(&buf->vb.queue);
314 buf->vb.state = VIDEOBUF_ERROR;
315 wake_up(&buf->vb.done);
316 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
317 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
318 }
319 if (restart)
320 {
321 dprintk(1, "restarting queue\n" );
322 cx8802_restart_queue(dev,q);
323 }
324 spin_unlock_irqrestore(&dev->slock,flags);
325 }
326
327 void cx8802_cancel_buffers(struct cx8802_dev *dev)
328 {
329 struct cx88_dmaqueue *q = &dev->mpegq;
330
331 dprintk( 1, "cx8802_cancel_buffers" );
332 del_timer_sync(&q->timeout);
333 cx8802_stop_dma(dev);
334 do_cancel_buffers(dev,"cancel",0);
335 }
336
337 static void cx8802_timeout(unsigned long data)
338 {
339 struct cx8802_dev *dev = (struct cx8802_dev*)data;
340
341 dprintk(1, "%s\n",__FUNCTION__);
342
343 if (debug)
344 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
345 cx8802_stop_dma(dev);
346 do_cancel_buffers(dev,"timeout",1);
347 }
348
349 static char *cx88_mpeg_irqs[32] = {
350 "ts_risci1", NULL, NULL, NULL,
351 "ts_risci2", NULL, NULL, NULL,
352 "ts_oflow", NULL, NULL, NULL,
353 "ts_sync", NULL, NULL, NULL,
354 "opc_err", "par_err", "rip_err", "pci_abort",
355 "ts_err?",
356 };
357
358 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
359 {
360 struct cx88_core *core = dev->core;
361 u32 status, mask, count;
362
363 dprintk( 1, "cx8802_mpeg_irq\n" );
364 status = cx_read(MO_TS_INTSTAT);
365 mask = cx_read(MO_TS_INTMSK);
366 if (0 == (status & mask))
367 return;
368
369 cx_write(MO_TS_INTSTAT, status);
370
371 if (debug || (status & mask & ~0xff))
372 cx88_print_irqbits(core->name, "irq mpeg ",
373 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
374 status, mask);
375
376 /* risc op code error */
377 if (status & (1 << 16)) {
378 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
379 cx_clear(MO_TS_DMACNTRL, 0x11);
380 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
381 }
382
383 /* risc1 y */
384 if (status & 0x01) {
385 dprintk( 1, "wake up\n" );
386 spin_lock(&dev->slock);
387 count = cx_read(MO_TS_GPCNT);
388 cx88_wakeup(dev->core, &dev->mpegq, count);
389 spin_unlock(&dev->slock);
390 }
391
392 /* risc2 y */
393 if (status & 0x10) {
394 spin_lock(&dev->slock);
395 cx8802_restart_queue(dev,&dev->mpegq);
396 spin_unlock(&dev->slock);
397 }
398
399 /* other general errors */
400 if (status & 0x1f0100) {
401 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
402 spin_lock(&dev->slock);
403 cx8802_stop_dma(dev);
404 cx8802_restart_queue(dev,&dev->mpegq);
405 spin_unlock(&dev->slock);
406 }
407 }
408
409 #define MAX_IRQ_LOOP 10
410
411 static irqreturn_t cx8802_irq(int irq, void *dev_id)
412 {
413 struct cx8802_dev *dev = dev_id;
414 struct cx88_core *core = dev->core;
415 u32 status;
416 int loop, handled = 0;
417
418 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
419 status = cx_read(MO_PCI_INTSTAT) &
420 (core->pci_irqmask | PCI_INT_TSINT);
421 if (0 == status)
422 goto out;
423 dprintk( 1, "cx8802_irq\n" );
424 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
425 dprintk( 1, " status: %d\n", status );
426 handled = 1;
427 cx_write(MO_PCI_INTSTAT, status);
428
429 if (status & core->pci_irqmask)
430 cx88_core_irq(core,status);
431 if (status & PCI_INT_TSINT)
432 cx8802_mpeg_irq(dev);
433 };
434 if (MAX_IRQ_LOOP == loop) {
435 dprintk( 0, "clearing mask\n" );
436 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
437 core->name);
438 cx_write(MO_PCI_INTMSK,0);
439 }
440
441 out:
442 return IRQ_RETVAL(handled);
443 }
444
445 static 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 static 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 static 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 static 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 #if defined(CONFIG_VIDEO_CX88_BLACKBIRD) || \
576 defined(CONFIG_VIDEO_CX88_BLACKBIRD_MODULE)
577 struct cx8802_dev * cx8802_get_device(struct inode *inode)
578 {
579 int minor = iminor(inode);
580 struct cx8802_dev *dev;
581
582 list_for_each_entry(dev, &cx8802_devlist, devlist)
583 if (dev->mpeg_dev && dev->mpeg_dev->minor == minor)
584 return dev;
585
586 return NULL;
587 }
588 EXPORT_SYMBOL(cx8802_get_device);
589 #endif
590
591 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
592 {
593 struct cx8802_driver *d;
594
595 list_for_each_entry(d, &dev->drvlist, drvlist)
596 if (d->type_id == btype)
597 return d;
598
599 return NULL;
600 }
601
602 /* Driver asked for hardware access. */
603 static int cx8802_request_acquire(struct cx8802_driver *drv)
604 {
605 struct cx88_core *core = drv->core;
606
607 /* Fail a request for hardware if the device is busy. */
608 if (core->active_type_id != CX88_BOARD_NONE)
609 return -EBUSY;
610
611 if (drv->advise_acquire)
612 {
613 core->active_type_id = drv->type_id;
614 drv->advise_acquire(drv);
615
616 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
617 }
618
619 return 0;
620 }
621
622 /* Driver asked to release hardware. */
623 static int cx8802_request_release(struct cx8802_driver *drv)
624 {
625 struct cx88_core *core = drv->core;
626
627 if (drv->advise_release)
628 {
629 drv->advise_release(drv);
630 core->active_type_id = CX88_BOARD_NONE;
631 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
632 }
633
634 return 0;
635 }
636
637 static int cx8802_check_driver(struct cx8802_driver *drv)
638 {
639 if (drv == NULL)
640 return -ENODEV;
641
642 if ((drv->type_id != CX88_MPEG_DVB) &&
643 (drv->type_id != CX88_MPEG_BLACKBIRD))
644 return -EINVAL;
645
646 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
647 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
648 return -EINVAL;
649
650 if ((drv->probe == NULL) ||
651 (drv->remove == NULL) ||
652 (drv->advise_acquire == NULL) ||
653 (drv->advise_release == NULL))
654 return -EINVAL;
655
656 return 0;
657 }
658
659 int cx8802_register_driver(struct cx8802_driver *drv)
660 {
661 struct cx8802_dev *dev;
662 struct cx8802_driver *driver;
663 int err, i = 0;
664
665 printk(KERN_INFO
666 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
667 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
668 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
669
670 if ((err = cx8802_check_driver(drv)) != 0) {
671 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
672 return err;
673 }
674
675 list_for_each_entry(dev, &cx8802_devlist, devlist) {
676 printk(KERN_INFO
677 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
678 dev->core->name, dev->pci->subsystem_vendor,
679 dev->pci->subsystem_device, dev->core->board.name,
680 dev->core->boardnr);
681
682 /* Bring up a new struct for each driver instance */
683 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
684 if (driver == NULL)
685 return -ENOMEM;
686
687 /* Snapshot of the driver registration data */
688 drv->core = dev->core;
689 drv->suspend = cx8802_suspend_common;
690 drv->resume = cx8802_resume_common;
691 drv->request_acquire = cx8802_request_acquire;
692 drv->request_release = cx8802_request_release;
693 memcpy(driver, drv, sizeof(*driver));
694
695 err = drv->probe(driver);
696 if (err == 0) {
697 i++;
698 mutex_lock(&drv->core->lock);
699 list_add_tail(&driver->drvlist, &dev->drvlist);
700 mutex_unlock(&drv->core->lock);
701 } else {
702 printk(KERN_ERR
703 "%s/2: cx8802 probe failed, err = %d\n",
704 dev->core->name, err);
705 }
706
707 }
708
709 return i ? 0 : -ENODEV;
710 }
711
712 int cx8802_unregister_driver(struct cx8802_driver *drv)
713 {
714 struct cx8802_dev *dev;
715 struct cx8802_driver *d, *dtmp;
716 int err = 0;
717
718 printk(KERN_INFO
719 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
720 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
721 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
722
723 list_for_each_entry(dev, &cx8802_devlist, devlist) {
724 printk(KERN_INFO
725 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
726 dev->core->name, dev->pci->subsystem_vendor,
727 dev->pci->subsystem_device, dev->core->board.name,
728 dev->core->boardnr);
729
730 list_for_each_entry_safe(d, dtmp, &dev->drvlist, drvlist) {
731 /* only unregister the correct driver type */
732 if (d->type_id != drv->type_id)
733 continue;
734
735 err = d->remove(d);
736 if (err == 0) {
737 mutex_lock(&drv->core->lock);
738 list_del(&d->drvlist);
739 mutex_unlock(&drv->core->lock);
740 kfree(d);
741 } else
742 printk(KERN_ERR "%s/2: cx8802 driver remove "
743 "failed (%d)\n", dev->core->name, err);
744 }
745
746 }
747
748 return err;
749 }
750
751 /* ----------------------------------------------------------- */
752 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
753 const struct pci_device_id *pci_id)
754 {
755 struct cx8802_dev *dev;
756 struct cx88_core *core;
757 int err;
758
759 /* general setup */
760 core = cx88_core_get(pci_dev);
761 if (NULL == core)
762 return -EINVAL;
763
764 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
765
766 err = -ENODEV;
767 if (!core->board.mpeg)
768 goto fail_core;
769
770 err = -ENOMEM;
771 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
772 if (NULL == dev)
773 goto fail_core;
774 dev->pci = pci_dev;
775 dev->core = core;
776
777 err = cx8802_init_common(dev);
778 if (err != 0)
779 goto fail_free;
780
781 INIT_LIST_HEAD(&dev->drvlist);
782 list_add_tail(&dev->devlist,&cx8802_devlist);
783
784 /* Maintain a reference so cx88-video can query the 8802 device. */
785 core->dvbdev = dev;
786
787 /* now autoload cx88-dvb or cx88-blackbird */
788 request_modules(dev);
789 return 0;
790
791 fail_free:
792 kfree(dev);
793 fail_core:
794 cx88_core_put(core,pci_dev);
795 return err;
796 }
797
798 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
799 {
800 struct cx8802_dev *dev;
801
802 dev = pci_get_drvdata(pci_dev);
803
804 dprintk( 1, "%s\n", __FUNCTION__);
805
806 if (!list_empty(&dev->drvlist)) {
807 struct cx8802_driver *drv, *tmp;
808 int err;
809
810 printk(KERN_WARNING "%s/2: Trying to remove cx8802 driver "
811 "while cx8802 sub-drivers still loaded?!\n",
812 dev->core->name);
813
814 list_for_each_entry_safe(drv, tmp, &dev->drvlist, drvlist) {
815 err = drv->remove(drv);
816 if (err == 0) {
817 mutex_lock(&drv->core->lock);
818 list_del(&drv->drvlist);
819 mutex_unlock(&drv->core->lock);
820 } else
821 printk(KERN_ERR "%s/2: cx8802 driver remove "
822 "failed (%d)\n", dev->core->name, err);
823 kfree(drv);
824 }
825 }
826
827 /* Destroy any 8802 reference. */
828 dev->core->dvbdev = NULL;
829
830 /* common */
831 cx8802_fini_common(dev);
832 cx88_core_put(dev->core,dev->pci);
833 kfree(dev);
834 }
835
836 static struct pci_device_id cx8802_pci_tbl[] = {
837 {
838 .vendor = 0x14f1,
839 .device = 0x8802,
840 .subvendor = PCI_ANY_ID,
841 .subdevice = PCI_ANY_ID,
842 },{
843 /* --- end of list --- */
844 }
845 };
846 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
847
848 static struct pci_driver cx8802_pci_driver = {
849 .name = "cx88-mpeg driver manager",
850 .id_table = cx8802_pci_tbl,
851 .probe = cx8802_probe,
852 .remove = __devexit_p(cx8802_remove),
853 };
854
855 static int cx8802_init(void)
856 {
857 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
858 (CX88_VERSION_CODE >> 16) & 0xff,
859 (CX88_VERSION_CODE >> 8) & 0xff,
860 CX88_VERSION_CODE & 0xff);
861 #ifdef SNAPSHOT
862 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
863 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
864 #endif
865 return pci_register_driver(&cx8802_pci_driver);
866 }
867
868 static void cx8802_fini(void)
869 {
870 pci_unregister_driver(&cx8802_pci_driver);
871 }
872
873 module_init(cx8802_init);
874 module_exit(cx8802_fini);
875 EXPORT_SYMBOL(cx8802_buf_prepare);
876 EXPORT_SYMBOL(cx8802_buf_queue);
877 EXPORT_SYMBOL(cx8802_cancel_buffers);
878
879 EXPORT_SYMBOL(cx8802_register_driver);
880 EXPORT_SYMBOL(cx8802_unregister_driver);
881 EXPORT_SYMBOL(cx8802_get_driver);
882 /* ----------------------------------------------------------- */
883 /*
884 * Local variables:
885 * c-basic-offset: 8
886 * End:
887 * 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
888 */
Linux kernel - Deliverables
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