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V4L/DVB (6125): whitespace cleanup: replace leading spaces with tabs
[linux-2.6/x86.git] / drivers / media / video / cx88 / cx88-mpeg.c
blobd302793fcfb9f5173584140eb58803438f274663
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 int rc;
241
242 dprintk(1, "%s: %p\n", __FUNCTION__, buf);
243 if (0 != buf->vb.baddr && buf->vb.bsize < size)
244 return -EINVAL;
245
246 if (STATE_NEEDS_INIT == buf->vb.state) {
247 buf->vb.width = dev->ts_packet_size;
248 buf->vb.height = dev->ts_packet_count;
249 buf->vb.size = size;
250 buf->vb.field = field /*V4L2_FIELD_TOP*/;
251
252 if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
253 goto fail;
254 cx88_risc_databuffer(dev->pci, &buf->risc,
255 buf->vb.dma.sglist,
256 buf->vb.width, buf->vb.height, 0);
257 }
258 buf->vb.state = STATE_PREPARED;
259 return 0;
260
261 fail:
262 cx88_free_buffer(q,buf);
263 return rc;
264 }
265
266 void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
267 {
268 struct cx88_buffer *prev;
269 struct cx88_dmaqueue *cx88q = &dev->mpegq;
270
271 dprintk( 1, "cx8802_buf_queue\n" );
272 /* add jump to stopper */
273 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
274 buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);
275
276 if (list_empty(&cx88q->active)) {
277 dprintk( 1, "queue is empty - first active\n" );
278 list_add_tail(&buf->vb.queue,&cx88q->active);
279 cx8802_start_dma(dev, cx88q, buf);
280 buf->vb.state = STATE_ACTIVE;
281 buf->count = cx88q->count++;
282 mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
283 dprintk(1,"[%p/%d] %s - first active\n",
284 buf, buf->vb.i, __FUNCTION__);
285
286 } else {
287 dprintk( 1, "queue is not empty - append to active\n" );
288 prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
289 list_add_tail(&buf->vb.queue,&cx88q->active);
290 buf->vb.state = STATE_ACTIVE;
291 buf->count = cx88q->count++;
292 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
293 dprintk( 1, "[%p/%d] %s - append to active\n",
294 buf, buf->vb.i, __FUNCTION__);
295 }
296 }
297
298 /* ----------------------------------------------------------- */
299
300 static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
301 {
302 struct cx88_dmaqueue *q = &dev->mpegq;
303 struct cx88_buffer *buf;
304 unsigned long flags;
305
306 spin_lock_irqsave(&dev->slock,flags);
307 while (!list_empty(&q->active)) {
308 buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
309 list_del(&buf->vb.queue);
310 buf->vb.state = STATE_ERROR;
311 wake_up(&buf->vb.done);
312 dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
313 buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
314 }
315 if (restart)
316 {
317 dprintk(1, "restarting queue\n" );
318 cx8802_restart_queue(dev,q);
319 }
320 spin_unlock_irqrestore(&dev->slock,flags);
321 }
322
323 void cx8802_cancel_buffers(struct cx8802_dev *dev)
324 {
325 struct cx88_dmaqueue *q = &dev->mpegq;
326
327 dprintk( 1, "cx8802_cancel_buffers" );
328 del_timer_sync(&q->timeout);
329 cx8802_stop_dma(dev);
330 do_cancel_buffers(dev,"cancel",0);
331 }
332
333 static void cx8802_timeout(unsigned long data)
334 {
335 struct cx8802_dev *dev = (struct cx8802_dev*)data;
336
337 dprintk(1, "%s\n",__FUNCTION__);
338
339 if (debug)
340 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
341 cx8802_stop_dma(dev);
342 do_cancel_buffers(dev,"timeout",1);
343 }
344
345 static char *cx88_mpeg_irqs[32] = {
346 "ts_risci1", NULL, NULL, NULL,
347 "ts_risci2", NULL, NULL, NULL,
348 "ts_oflow", NULL, NULL, NULL,
349 "ts_sync", NULL, NULL, NULL,
350 "opc_err", "par_err", "rip_err", "pci_abort",
351 "ts_err?",
352 };
353
354 static void cx8802_mpeg_irq(struct cx8802_dev *dev)
355 {
356 struct cx88_core *core = dev->core;
357 u32 status, mask, count;
358
359 dprintk( 1, "cx8802_mpeg_irq\n" );
360 status = cx_read(MO_TS_INTSTAT);
361 mask = cx_read(MO_TS_INTMSK);
362 if (0 == (status & mask))
363 return;
364
365 cx_write(MO_TS_INTSTAT, status);
366
367 if (debug || (status & mask & ~0xff))
368 cx88_print_irqbits(core->name, "irq mpeg ",
369 cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
370 status, mask);
371
372 /* risc op code error */
373 if (status & (1 << 16)) {
374 printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
375 cx_clear(MO_TS_DMACNTRL, 0x11);
376 cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
377 }
378
379 /* risc1 y */
380 if (status & 0x01) {
381 dprintk( 1, "wake up\n" );
382 spin_lock(&dev->slock);
383 count = cx_read(MO_TS_GPCNT);
384 cx88_wakeup(dev->core, &dev->mpegq, count);
385 spin_unlock(&dev->slock);
386 }
387
388 /* risc2 y */
389 if (status & 0x10) {
390 spin_lock(&dev->slock);
391 cx8802_restart_queue(dev,&dev->mpegq);
392 spin_unlock(&dev->slock);
393 }
394
395 /* other general errors */
396 if (status & 0x1f0100) {
397 dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
398 spin_lock(&dev->slock);
399 cx8802_stop_dma(dev);
400 cx8802_restart_queue(dev,&dev->mpegq);
401 spin_unlock(&dev->slock);
402 }
403 }
404
405 #define MAX_IRQ_LOOP 10
406
407 static irqreturn_t cx8802_irq(int irq, void *dev_id)
408 {
409 struct cx8802_dev *dev = dev_id;
410 struct cx88_core *core = dev->core;
411 u32 status;
412 int loop, handled = 0;
413
414 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
415 status = cx_read(MO_PCI_INTSTAT) &
416 (core->pci_irqmask | PCI_INT_TSINT);
417 if (0 == status)
418 goto out;
419 dprintk( 1, "cx8802_irq\n" );
420 dprintk( 1, " loop: %d/%d\n", loop, MAX_IRQ_LOOP );
421 dprintk( 1, " status: %d\n", status );
422 handled = 1;
423 cx_write(MO_PCI_INTSTAT, status);
424
425 if (status & core->pci_irqmask)
426 cx88_core_irq(core,status);
427 if (status & PCI_INT_TSINT)
428 cx8802_mpeg_irq(dev);
429 };
430 if (MAX_IRQ_LOOP == loop) {
431 dprintk( 0, "clearing mask\n" );
432 printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
433 core->name);
434 cx_write(MO_PCI_INTMSK,0);
435 }
436
437 out:
438 return IRQ_RETVAL(handled);
439 }
440
441 /* ----------------------------------------------------------- */
442 /* exported stuff */
443
444 int cx8802_init_common(struct cx8802_dev *dev)
445 {
446 struct cx88_core *core = dev->core;
447 int err;
448
449 /* pci init */
450 if (pci_enable_device(dev->pci))
451 return -EIO;
452 pci_set_master(dev->pci);
453 if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
454 printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
455 return -EIO;
456 }
457
458 pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
459 pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER, &dev->pci_lat);
460 printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
461 "latency: %d, mmio: 0x%llx\n", dev->core->name,
462 pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
463 dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));
464
465 /* initialize driver struct */
466 spin_lock_init(&dev->slock);
467
468 /* init dma queue */
469 INIT_LIST_HEAD(&dev->mpegq.active);
470 INIT_LIST_HEAD(&dev->mpegq.queued);
471 dev->mpegq.timeout.function = cx8802_timeout;
472 dev->mpegq.timeout.data = (unsigned long)dev;
473 init_timer(&dev->mpegq.timeout);
474 cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
475 MO_TS_DMACNTRL,0x11,0x00);
476
477 /* get irq */
478 err = request_irq(dev->pci->irq, cx8802_irq,
479 IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
480 if (err < 0) {
481 printk(KERN_ERR "%s: can't get IRQ %d\n",
482 dev->core->name, dev->pci->irq);
483 return err;
484 }
485 cx_set(MO_PCI_INTMSK, core->pci_irqmask);
486
487 /* everything worked */
488 pci_set_drvdata(dev->pci,dev);
489 return 0;
490 }
491
492 void cx8802_fini_common(struct cx8802_dev *dev)
493 {
494 dprintk( 2, "cx8802_fini_common\n" );
495 cx8802_stop_dma(dev);
496 pci_disable_device(dev->pci);
497
498 /* unregister stuff */
499 free_irq(dev->pci->irq, dev);
500 pci_set_drvdata(dev->pci, NULL);
501
502 /* free memory */
503 btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
504 }
505
506 /* ----------------------------------------------------------- */
507
508 int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
509 {
510 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
511 struct cx88_core *core = dev->core;
512
513 /* stop mpeg dma */
514 spin_lock(&dev->slock);
515 if (!list_empty(&dev->mpegq.active)) {
516 dprintk( 2, "suspend\n" );
517 printk("%s: suspend mpeg\n", core->name);
518 cx8802_stop_dma(dev);
519 del_timer(&dev->mpegq.timeout);
520 }
521 spin_unlock(&dev->slock);
522
523 /* FIXME -- shutdown device */
524 cx88_shutdown(dev->core);
525
526 pci_save_state(pci_dev);
527 if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
528 pci_disable_device(pci_dev);
529 dev->state.disabled = 1;
530 }
531 return 0;
532 }
533
534 int cx8802_resume_common(struct pci_dev *pci_dev)
535 {
536 struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
537 struct cx88_core *core = dev->core;
538 int err;
539
540 if (dev->state.disabled) {
541 err=pci_enable_device(pci_dev);
542 if (err) {
543 printk(KERN_ERR "%s: can't enable device\n",
544 dev->core->name);
545 return err;
546 }
547 dev->state.disabled = 0;
548 }
549 err=pci_set_power_state(pci_dev, PCI_D0);
550 if (err) {
551 printk(KERN_ERR "%s: can't enable device\n",
552 dev->core->name);
553 pci_disable_device(pci_dev);
554 dev->state.disabled = 1;
555
556 return err;
557 }
558 pci_restore_state(pci_dev);
559
560 /* FIXME: re-initialize hardware */
561 cx88_reset(dev->core);
562
563 /* restart video+vbi capture */
564 spin_lock(&dev->slock);
565 if (!list_empty(&dev->mpegq.active)) {
566 printk("%s: resume mpeg\n", core->name);
567 cx8802_restart_queue(dev,&dev->mpegq);
568 }
569 spin_unlock(&dev->slock);
570
571 return 0;
572 }
573
574 struct cx8802_dev * cx8802_get_device(struct inode *inode)
575 {
576 int minor = iminor(inode);
577 struct cx8802_dev *h = NULL;
578 struct list_head *list;
579
580 list_for_each(list,&cx8802_devlist) {
581 h = list_entry(list, struct cx8802_dev, devlist);
582 if (h->mpeg_dev && h->mpeg_dev->minor == minor)
583 return h;
584 }
585
586 return NULL;
587 }
588
589 struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
590 {
591 struct cx8802_dev *h = NULL;
592 struct cx8802_driver *d = NULL;
593 struct list_head *list;
594 struct list_head *list2;
595
596 list_for_each(list,&cx8802_devlist) {
597 h = list_entry(list, struct cx8802_dev, devlist);
598 if (h != dev)
599 continue;
600
601 list_for_each(list2, &h->drvlist.devlist) {
602 d = list_entry(list2, struct cx8802_driver, devlist);
603
604 /* only unregister the correct driver type */
605 if (d->type_id == btype) {
606 return d;
607 }
608 }
609 }
610
611 return NULL;
612 }
613
614 /* Driver asked for hardware access. */
615 static int cx8802_request_acquire(struct cx8802_driver *drv)
616 {
617 struct cx88_core *core = drv->core;
618
619 /* Fail a request for hardware if the device is busy. */
620 if (core->active_type_id != CX88_BOARD_NONE)
621 return -EBUSY;
622
623 if (drv->advise_acquire)
624 {
625 core->active_type_id = drv->type_id;
626 drv->advise_acquire(drv);
627
628 mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
629 }
630
631 return 0;
632 }
633
634 /* Driver asked to release hardware. */
635 static int cx8802_request_release(struct cx8802_driver *drv)
636 {
637 struct cx88_core *core = drv->core;
638
639 if (drv->advise_release)
640 {
641 drv->advise_release(drv);
642 core->active_type_id = CX88_BOARD_NONE;
643 mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
644 }
645
646 return 0;
647 }
648
649 static int cx8802_check_driver(struct cx8802_driver *drv)
650 {
651 if (drv == NULL)
652 return -ENODEV;
653
654 if ((drv->type_id != CX88_MPEG_DVB) &&
655 (drv->type_id != CX88_MPEG_BLACKBIRD))
656 return -EINVAL;
657
658 if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
659 (drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
660 return -EINVAL;
661
662 if ((drv->probe == NULL) ||
663 (drv->remove == NULL) ||
664 (drv->advise_acquire == NULL) ||
665 (drv->advise_release == NULL))
666 return -EINVAL;
667
668 return 0;
669 }
670
671 int cx8802_register_driver(struct cx8802_driver *drv)
672 {
673 struct cx8802_dev *h;
674 struct cx8802_driver *driver;
675 struct list_head *list;
676 int err = 0, i = 0;
677
678 printk(KERN_INFO
679 "cx88/2: registering cx8802 driver, type: %s access: %s\n",
680 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
681 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
682
683 if ((err = cx8802_check_driver(drv)) != 0) {
684 printk(KERN_ERR "cx88/2: cx8802_driver is invalid\n");
685 return err;
686 }
687
688 list_for_each(list,&cx8802_devlist) {
689 h = list_entry(list, struct cx8802_dev, devlist);
690
691 printk(KERN_INFO
692 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
693 h->core->name, h->pci->subsystem_vendor,
694 h->pci->subsystem_device, h->core->board.name,
695 h->core->boardnr);
696
697 /* Bring up a new struct for each driver instance */
698 driver = kzalloc(sizeof(*drv),GFP_KERNEL);
699 if (driver == NULL)
700 return -ENOMEM;
701
702 /* Snapshot of the driver registration data */
703 drv->core = h->core;
704 drv->suspend = cx8802_suspend_common;
705 drv->resume = cx8802_resume_common;
706 drv->request_acquire = cx8802_request_acquire;
707 drv->request_release = cx8802_request_release;
708 memcpy(driver, drv, sizeof(*driver));
709
710 err = drv->probe(driver);
711 if (err == 0) {
712 i++;
713 mutex_lock(&drv->core->lock);
714 list_add_tail(&driver->devlist,&h->drvlist.devlist);
715 mutex_unlock(&drv->core->lock);
716 } else {
717 printk(KERN_ERR
718 "%s/2: cx8802 probe failed, err = %d\n",
719 h->core->name, err);
720 }
721
722 }
723 if (i == 0)
724 err = -ENODEV;
725 else
726 err = 0;
727
728 return err;
729 }
730
731 int cx8802_unregister_driver(struct cx8802_driver *drv)
732 {
733 struct cx8802_dev *h;
734 struct cx8802_driver *d;
735 struct list_head *list;
736 struct list_head *list2, *q;
737 int err = 0, i = 0;
738
739 printk(KERN_INFO
740 "cx88/2: unregistering cx8802 driver, type: %s access: %s\n",
741 drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
742 drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");
743
744 list_for_each(list,&cx8802_devlist) {
745 i++;
746 h = list_entry(list, struct cx8802_dev, devlist);
747
748 printk(KERN_INFO
749 "%s/2: subsystem: %04x:%04x, board: %s [card=%d]\n",
750 h->core->name, h->pci->subsystem_vendor,
751 h->pci->subsystem_device, h->core->board.name,
752 h->core->boardnr);
753
754 list_for_each_safe(list2, q, &h->drvlist.devlist) {
755 d = list_entry(list2, struct cx8802_driver, devlist);
756
757 /* only unregister the correct driver type */
758 if (d->type_id != drv->type_id)
759 continue;
760
761 err = d->remove(d);
762 if (err == 0) {
763 mutex_lock(&drv->core->lock);
764 list_del(list2);
765 mutex_unlock(&drv->core->lock);
766 } else
767 printk(KERN_ERR "%s/2: cx8802 driver remove "
768 "failed (%d)\n", h->core->name, err);
769
770 }
771
772 }
773
774 return err;
775 }
776
777 /* ----------------------------------------------------------- */
778 static int __devinit cx8802_probe(struct pci_dev *pci_dev,
779 const struct pci_device_id *pci_id)
780 {
781 struct cx8802_dev *dev;
782 struct cx88_core *core;
783 int err;
784
785 /* general setup */
786 core = cx88_core_get(pci_dev);
787 if (NULL == core)
788 return -EINVAL;
789
790 printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);
791
792 err = -ENODEV;
793 if (!core->board.mpeg)
794 goto fail_core;
795
796 err = -ENOMEM;
797 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
798 if (NULL == dev)
799 goto fail_core;
800 dev->pci = pci_dev;
801 dev->core = core;
802
803 err = cx8802_init_common(dev);
804 if (err != 0)
805 goto fail_free;
806
807 INIT_LIST_HEAD(&dev->drvlist.devlist);
808 list_add_tail(&dev->devlist,&cx8802_devlist);
809
810 /* Maintain a reference so cx88-video can query the 8802 device. */
811 core->dvbdev = dev;
812
813 /* now autoload cx88-dvb or cx88-blackbird */
814 request_modules(dev);
815 return 0;
816
817 fail_free:
818 kfree(dev);
819 fail_core:
820 cx88_core_put(core,pci_dev);
821 return err;
822 }
823
824 static void __devexit cx8802_remove(struct pci_dev *pci_dev)
825 {
826 struct cx8802_dev *dev;
827 struct cx8802_driver *h;
828 struct list_head *list;
829
830 dev = pci_get_drvdata(pci_dev);
831
832 dprintk( 1, "%s\n", __FUNCTION__);
833
834 list_for_each(list,&dev->drvlist.devlist) {
835 h = list_entry(list, struct cx8802_driver, devlist);
836 dprintk( 1, " ->driver\n");
837 if (h->remove == NULL) {
838 printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
839 continue;
840 }
841 printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
842 cx8802_unregister_driver(h);
843 list_del(&dev->drvlist.devlist);
844 }
845
846 /* Destroy any 8802 reference. */
847 dev->core->dvbdev = NULL;
848
849 /* common */
850 cx8802_fini_common(dev);
851 cx88_core_put(dev->core,dev->pci);
852 kfree(dev);
853 }
854
855 static struct pci_device_id cx8802_pci_tbl[] = {
856 {
857 .vendor = 0x14f1,
858 .device = 0x8802,
859 .subvendor = PCI_ANY_ID,
860 .subdevice = PCI_ANY_ID,
861 },{
862 /* --- end of list --- */
863 }
864 };
865 MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);
866
867 static struct pci_driver cx8802_pci_driver = {
868 .name = "cx88-mpeg driver manager",
869 .id_table = cx8802_pci_tbl,
870 .probe = cx8802_probe,
871 .remove = __devexit_p(cx8802_remove),
872 };
873
874 static int cx8802_init(void)
875 {
876 printk(KERN_INFO "cx88/2: cx2388x MPEG-TS Driver Manager version %d.%d.%d loaded\n",
877 (CX88_VERSION_CODE >> 16) & 0xff,
878 (CX88_VERSION_CODE >> 8) & 0xff,
879 CX88_VERSION_CODE & 0xff);
880 #ifdef SNAPSHOT
881 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
882 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
883 #endif
884 return pci_register_driver(&cx8802_pci_driver);
885 }
886
887 static void cx8802_fini(void)
888 {
889 pci_unregister_driver(&cx8802_pci_driver);
890 }
891
892 module_init(cx8802_init);
893 module_exit(cx8802_fini);
894 EXPORT_SYMBOL(cx8802_buf_prepare);
895 EXPORT_SYMBOL(cx8802_buf_queue);
896 EXPORT_SYMBOL(cx8802_cancel_buffers);
897
898 EXPORT_SYMBOL(cx8802_init_common);
899 EXPORT_SYMBOL(cx8802_fini_common);
900
901 EXPORT_SYMBOL(cx8802_register_driver);
902 EXPORT_SYMBOL(cx8802_unregister_driver);
903 EXPORT_SYMBOL(cx8802_get_device);
904 EXPORT_SYMBOL(cx8802_get_driver);
905 /* ----------------------------------------------------------- */
906 /*
907 * Local variables:
908 * c-basic-offset: 8
909 * End:
910 * 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
911 */
x86 "subsystem" repository